BARGO ENERGY CO
10QSB, 1999-11-19
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>   1
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 10-QSB

(Mark One)
[x]     QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
          SECURITIES EXCHANGE ACT OF 1934
        For the quarterly period ended September 30, 1999

     OR

[ ]     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
          SECURITIES EXCHANGE ACT OF 1934
        For the transition period from _______________ to ______________

          Commission file number     0-8609

                         Bargo Energy Company
     (Exact name of small business issuer as specified in charter)

         Texas                                 87-0239185
(State or other jurisdiction of            (I.R.S. Employer
 incorporation or organization)             Identification No.)

      700 Louisiana, Suite 3700
            Houston, Texas                                  77002
(Address of principal executive offices)                 (Zip Code)

                      (713)236-9792
          (Issuer's telephone number, including area code)

Check whether the issuer (1) filed all reports required to be filed by section
13 or 15(d) of the Securities Exchange Act of 1934 during the past 12 months (or
for such shorter period that the registrant was required to file such reports),
and (2) has been subject to such filing requirements for the past 90 days.
Yes [x] No [ ]

                  APPLICABLE ONLY TO CORPORATE ISSUERS:

The Company had approximately 92,173,000 shares of common stock, par value $0.01
per share, issued and outstanding as of November 15, 1999.

Transitional Small Business Disclosure Format (Check One): Yes  No X




<PAGE>   2


                                     PART I
                              FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS


The condensed consolidated financial statements included herein have been
prepared by the Company, without audit, pursuant to the rules and regulations of
the Securities and Exchange Commission. Certain information and footnote
disclosures normally included in financial statements prepared in accordance
with generally accepted accounting principles have been condensed or omitted.
However, in the opinion of management, all adjustments (which consist only of
normal recurring adjustments) necessary for a fair statement of the financial
position and results of operations for the periods presented have been made.
These condensed consolidated financial statements should be read in conjunction
with financial statements and the notes thereto included in the Company's Form
10-KSB filing for the year ended December 31, 1998.




<PAGE>   3


                      BARGO ENERGY COMPANY AND SUBSIDIARIES

                     (FORMERLY FUTURE PETROLEUM CORPORATION
                                AND SUBSIDIARIES)

                           CONSOLIDATED BALANCE SHEET

<TABLE>
<CAPTION>
                                                          September 30, 1999    December 31, 1998
                                                              (unaudited)
<S>                                                       <C>                   <C>
ASSETS

CURRENT ASSETS

     Cash and cash equivalents                                $  1,146,000         $  1,241,000
     Trade accounts receivable, no allowance for
          doubtful accounts considered necessary:
          Joint interest billings                                   12,000                 --
          Accrued oil and gas sales                              4,373,000            2,636,000
          Advance to related party                                  20,000                8,000
                                                              ------------         ------------
               TOTAL CURRENT ASSETS                              5,551,000            3,885,000
                                                              ------------
PROPERTY AND EQUIPMENT

     Oil and gas properties, full cost method                   73,476,000           45,992,000
     Other                                                         713,000              648,000
                                                              ------------         ------------
               TOTAL PROPERTY AND EQUIPMENT                     74,189,000           46,640,000
                                                              ------------         ------------
     Less accumulated depletion, depreciation
          and amortization                                      (3,975,000)          (1,566,000)
                                                              ------------         ------------
               NET PROPERTY AND EQUIPMENT                       70,214,000           45,074,000

OTHER ASSETS

     Goodwill, net                                               1,842,000            1,984,000
     Loan costs, net                                               914,000              965,000
     Mining properties held for sale                                40,000               40,000
     Other                                                           1,000                 --
                                                              ------------         ------------
               TOTAL OTHER ASSETS                                2,797,000            2,989,000
                                                              ------------         ------------
     TOTAL ASSETS                                             $ 78,562,000         $ 51,948,000
                                                              ============         ============
</TABLE>



<PAGE>   4



                      LIABILITIES AND STOCKHOLDERS' EQUITY



<TABLE>
<CAPTION>
                                                                    September 30, 1999    December 31, 1998
                                                                        (unaudited)

<S>                                                                 <C>                   <C>
CURRENT LIABILITIES
     Current portion of long-term debt                                  $      9,000         $  8,952,000
     Trade accounts payable                                                2,748,000            1,457,000
     Accrued oil and gas proceeds payable                                    393,000              514,000
     Accrued interest payable                                                190,000              430,000
     Advance from related party                                                1,000              566,000
                                                                        ------------         ------------
               TOTAL CURRENT LIABILITIES                                   3,341,000           11,919,000
                                                                        ------------         ------------

LONG TERM DEBT, less current portion                                      19,605,000           30,907,000

DEFERRED TAX LIABILITY                                                       594,000            1,011,000
                                                                        ------------         ------------
REDEEMABLE PREFERRED STOCK, 10% cumulative dividend;
$.01 par value; 5,000,000 and 0 shares authorized,
issued and outstanding at September 30, 1999 and December 31,
1998, respectively                                                        51,935,000                    0
                                                                        ------------         ------------

STOCKHOLDERS' EQUITY

Series A Preferred stock, $.01 par value, 0 and 200,000 shares
authorized; 0 and 100,000 shares issued and outstanding
at September 30, 1999 and December 31, 1998, respectively                          0                1,000

Common stock, $.01 par value; 120,000,000 and 30,000,000
shares authorized; 91,830,544 and 22,320,066 shares issued;
91,830,544 and 22,320,066 shares outstanding at September 30,
1999 and December 31, 1998, respectively                                     918,000              223,000

Additional paid-in capital                                                 3,657,000            6,543,000
Treasury stock                                                               (87,000)                --
Retained earnings (deficit)                                               (1,400,000)           1,344,000
                                                                        ------------         ------------
               TOTAL STOCKHOLDERS' EQUITY                                  3,088,000            8,111,000
                                                                        ------------         ------------

     TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY                         $ 78,562,000         $ 51,948,000
                                                                        ============         ============
</TABLE>


<PAGE>   5


                      BARGO ENERGY COMPANY AND SUBSIDIARIES

                     (FORMERLY FUTURE PETROLEUM CORPORATION
                                AND SUBSIDIARIES)

                      CONSOLIDATED STATEMENTS OF OPERATIONS

                                   (UNAUDITED)

<TABLE>
<CAPTION>
                                                                     Three Months Ended
                                                                        September 30,
                                                              ---------------------------------
                                                                  1999                 1998
                                                              ------------         ------------

<S>                                                           <C>                  <C>
REVENUES

     Oil and gas sales                                        $  4,514,951         $    812,326
         Hedge gain (loss)                                        (211,400)                   0
                                                              ------------         ------------
          TOTAL REVENUES                                         4,303,551              812,326
                                                              ------------         ------------
COSTS AND EXPENSES

     Lease operations and production taxes                       1,869,260              488,305
     General and administrative                                    709,186               70,300
     Depletion, depreciation and amortization                      386,090              166,443
                                                              ------------         ------------
          TOTAL EXPENSES                                         2,964,536              725,048
                                                              ------------         ------------
OTHER INCOME

     Interest expense                                             (221,402)            (124,385)
     Interest income                                                 1,642                  921
     Miscellaneous income                                              -0-                1,422
                                                              ------------         ------------
          TOTAL OTHER INCOME AND (EXPENSE)                        (219,760)            (122,042)
                                                              ------------         ------------
INCOME (LOSS) BEFORE INCOME TAXES                                1,119,255              (34,764)

DEFERRED INCOME TAX BENEFIT (EXPENSE)                             (380,000)              12,000
                                                              ------------         ------------
NET INCOME (LOSS)                                                  739,255              (22,764)
                                                              ------------         ------------
REDEEMABLE PREFERRED STOCK DIVIDENDS                             1,277,009                  -0-
                                                              ------------         ------------
NET INCOME (LOSS) ALLOCABLE TO COMMON
         SHAREHOLDERS                                         $   (537,754)        $    (22,764)
                                                              ============         ============
NET INCOME (LOSS) ALLOCABLE PER COMMON SHARE -
     BASIC AND DILUTED                                               (.006)               (.002)
                                                              ------------         ------------
WEIGHTED AVERAGE COMMON SHARES
     OUTSTANDING                                                91,830,544            9,708,000
                                                              ------------         ------------
</TABLE>


<PAGE>   6


                      BARGO ENERGY COMPANY AND SUBSIDIARIES

                     (FORMERLY FUTURE PETROLEUM CORPORATION
                                AND SUBSIDIARIES)

                      CONSOLIDATED STATEMENTS OF OPERATIONS

                                   (UNAUDITED)

<TABLE>
<CAPTION>
                                                                        Nine Months Ended
                                                                          September 30,
                                                                ---------------------------------
                                                                    1999                 1998
                                                                ------------         ------------

<S>                                                             <C>                  <C>
REVENUES

     Oil and gas sales                                          $  9,651,232         $  1,902,855
     Hedge gain (loss)                                              (131,500)                   0
                                                                ------------         ------------
          TOTAL REVENUES                                           9,519,732            1,902,855
                                                                ------------         ------------
COSTS AND EXPENSES

     Lease operations and production taxes                         4,187,264            1,131,754
     General and administrative                                    2,376,692              290,953
     Depletion, depreciation and amortization                      2,558,658              368,756
                                                                ------------         ------------
          TOTAL EXPENSES                                           9,122,614            1,791,463
                                                                ------------         ------------
OTHER INCOME

     Interest expense                                             (1,630,536)            (406,511)
     Interest income                                                   6,656                3,639
     Miscellaneous income                                                -0-               12,382
                                                                ------------         ------------
          TOTAL OTHER INCOME AND (EXPENSE)                        (1,623,880)            (390,490)
                                                                ------------         ------------
INCOME (LOSS) BEFORE INCOME TAXES                                 (1,226,762)            (279,098)

DEFERRED INCOME TAX BENEFIT (EXPENSE)                                417,000               98,000
                                                                ------------         ------------
NET INCOME (LOSS)                                                   (809,762)            (181,098)
                                                                ------------         ------------
REDEEMABLE PREFERRED STOCK DIVIDENDS                               1,934,543                  -0-
                                                                ------------         ------------
NET INCOME (LOSS) ALLOCABLE TO COMMON
     SHAREHOLDERS                                               $ (2,744,305)        $   (181,098)
                                                                ============         ============

NET INCOME (LOSS) ALLOCABLE PER COMMON SHARE
     - BASIC AND DILUTED                                               (.039)               (.026)
                                                                ------------         ------------
WEIGHTED AVERAGE COMMON SHARES
     OUTSTANDING                                                  70,622,270            7,053,000
                                                                ------------         ------------
</TABLE>



<PAGE>   7


                      BARGO ENERGY COMPANY AND SUBSIDIARIES

                     (FORMERLY FUTURE PETROLEUM CORPORATION
                                AND SUBSIDIARIES)

                      CONSOLIDATED STATEMENTS OF CASH FLOWS

                                   (UNAUDITED)

<TABLE>
<CAPTION>
                                                                      Nine Months Ended
                                                                        September 30,
                                                              ---------------------------------
                                                                  1999                 1998
                                                              ------------         ------------

<S>                                                           <C>                  <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net income (loss)                                          $   (809,762)        $   (181,098)
   Adjustments to reconcile net income
    (loss) to cash provided by operating
      activities:
      Depletion, depreciation, and
            amortization                                         2,558,658              368,756
      Amortization of debt issue costs                             153,909                  -0-
      Deferred income taxes                                       (417,000)             (98,000)
                                                              ------------         ------------
  Net cash provided by (used in) operating
  Activities before changes in working capital                   1,485,805               89,658
     Change in working capital items:
          Decrease (increase) in
          accounts receivable                                   (1,748,915)            (518,418)
          Increase in advances to
          related parties                                          (11,874)                 -0-
          Increase (decrease) in accounts payable
                    and accrued liabilities                        929,712              556,638
               Decrease in advances from
                    related parties                               (564,900)                 -0-
               Other                                                (7,877)             (11,471)
                                                              ------------         ------------
          NET CASH PROVIDED BY (USED IN)
          OPERATING ACTIVITIES                                      81,951              116,407
                                                              ------------         ------------
CASH FLOWS FROM INVESTING ACTIVITIES:
     Acquisition of oil and gas properties                     (27,484,342)          (7,187,420)
     Additions to property and equipment                           (64,968)                 -0-
                                                              ------------         ------------
          NET CASH PROVIDED BY (USED IN)
          INVESTING ACTIVITIES                                 (27,549,310)          (7,187,420)
                                                              ------------         ------------
CASH FLOWS FROM FINANCING ACTIVITIES:
     Proceeds from issuance of debt                             17,760,262            8,773,594
     Purchase of treasury stock                                    (90,314)                 -0-
     Repayment of long-term debt                               (38,005,522)          (1,820,787)
     Proceeds from issuance of stock                            50,000,000              251,086
     Stock issuance costs                                       (2,198,534)                 -0-
     Loan costs                                                   (102,977)                 -0-
     Proceeds from exercise of stock options                        10,071                  -0-
                                                              ------------         ------------
          NET CASH PROVIDED BY (USED IN)
          FINANCING ACTIVITIES                                  27,372,986            7,203,893
                                                              ------------         ------------
NET INCREASE (DECREASE) IN CASH                                    (94,373)             132,880

CASH AND CASH EQUIVALENTS,
          BEGINNING OF PERIOD                                    1,241,000              292,931
                                                              ------------         ------------
CASH AND CASH EQUIVALENTS, END OF PERIOD                      $  1,146,627         $    425,811
                                                              ============         ============
SUPPLEMENTAL INFORMATION:
     Cash paid during the period
                 for interest                                 $  1,707,501         $    406,511
                                                              ============         ============
</TABLE>




<PAGE>   8


                      BARGO ENERGY COMPANY AND SUBSIDIARIES

            (FORMERLY FUTURE PETROLEUM CORPORATION AND SUBSIDIARIES)

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


Note 1: THE COMPANY

Bargo Energy Company (the "Company" or "Bargo") is engaged through its
subsidiaries and subsidiary partnerships in the development of oil and natural
gas properties located onshore, primarily in the Gulf Coast Region (Texas and
Louisiana) and California. The Company's principal business strategies include
(i) maximizing the value of its existing high-quality, long-life reserves
through efficient operating and marketing practices, (ii) conducting detailed
field studies using the newest technology to identify additional reserves and
exploration potential, and (iii) seeking acquisitions of producing properties,
with exploration and development potential in areas where the Company has
operating experience and expertise.

On April 26, 1999 (the "Effective Date"), Future Petroleum Corporation, a Utah
corporation ("Future"), merged with Bargo Energy Company, a Texas corporation
("Bargo"). Bargo was incorporated under the name FPT Corporation on January 26,
1999 as a wholly owned subsidiary of Future, solely for the purpose of
reincorporating Future in Texas.

The reincorporation occurred pursuant to a merger agreement dated April 6, 1999
entered into between Future and Bargo ("Merger Agreement"). In accordance with
the terms of the Merger Agreement, Future merged into Bargo, with Bargo as the
surviving corporation. On the Effective Date, each of the 22,320,066 shares of
common stock of Future outstanding were converted into one share of Bargo's
common stock and each of the 100,000 shares of preferred stock of Future
outstanding were converted into one share of Bargo preferred stock.

The reincorporation merger increased the Company's authorized capital stock from
30.2 million shares to 125 million shares. The articles of incorporation of
Bargo authorize 125 million shares of capital stock, of which 120 million shares
are common stock and 5 million shares are preferred stock. Future's articles of
incorporation authorized 30 million shares of common stock and 200,000 shares of
preferred stock.

In addition to the conversion of the Future common shares into Bargo common
shares and the issuance of common stock as described in Note 2 below, Bargo
converted each of the 100,000 shares of Bargo Series A preferred stock to 260
shares of Bargo common stock (26,000,000 common shares were issued) during the
nine months ended September 30, 1999.


Note 2:  PREFERRED STOCK ISSUANCE

On May 14, 1999, the Company closed a transaction pursuant to which it issued
and sold to Kayne Anderson Energy Fund, L.P. ("Kayne"), BancAmerica Capital
Investors SBIC I, L.P. ("BancAmerica"), Eos Partners, L.P., Eos Partners SBIC,
L.P., Eos Partners SBIC II, L.P. (collectively, "Eos"), Energy Capital
Investment Company PLC, EnCap Energy Capital Fund III-B, L.P., BOCP Energy
Partners, L.P., EnCap Energy Capital Fund III, L.P. (collectively, "EnCap") and
SGC Partners II LLC ("SGC" and together with Kayne, BancAmerica, Eos, EnCap and


<PAGE>   9

SGC, the "Investors") shares of a newly created class of preferred stock. Five
million shares of the Company's Cumulative Redeemable Preferred Stock, Series B
("Preferred Stock") were issued in exchange for an aggregate purchase price of
$50 million. As additional consideration, the Company issued an aggregate of
43,815,810 shares of its common stock to the Investors equal to 40% of the
outstanding common stock (on a fully diluted basis). If the Company redeems all
of the outstanding shares of Preferred Stock prior to May 14, 2001, the
Investors must sell back to the Company 12.5% of the shares of Common Stock
originally issued to the Investors.

Dividends on the Preferred Stock equal to 10% per annum are payable quarterly.
The dividend rate is subject to increase (but in no event to more than 16%) or
decrease (but in no event to less than 10%) based upon the Company's ratio of
assets to liabilities which is calculated on January 1 and July 1 of each year
or at such other time as requested by the Investors. As of July 1, 1999 the
dividend rate on the preferred stock is 10%. The Preferred Stock may be redeemed
at any time by the Company and must be redeemed upon the occurrence of certain
events, including upon the fifth anniversary of the issue date or upon a change
of control. The  Preferred Stock is redeemable for $50 million and unpaid
cumulative dividends. A change of control is deemed to occur upon any merger,
reorganization, purchase or sale of more than 50% of the Company's voting
securities, the sale of substantially all of the assets of the Company or at any
time Tim Goff ceases to serve as the Company's Chief Executive Officer. The
Company is prohibited from taking certain actions, including authorizing,
creating or issuing any shares of capital stock, amending the articles of
incorporation of the Company and authorizing a merger or change of control,
without the consent of the holders of a majority of the outstanding shares of
Preferred Stock.

As of September 30, 1999, holders of shares of the Series B Preferred were
entitled to receive, when, and if declared by the Board of Directors, as legally
available, cumulative dividends totaling $1,934,543.


Note 3: CREDIT FACILITY

Bargo had an original credit facility which at December 31, 1998 had a
commitment amount of $50 million subject to a borrowing base as determined by
Bank of America on an acquisition by acquisition basis. The Credit Agreement was
comprised of two Tranches, Tranche A and Tranche B.

The Company had a choice of two different interest rates under the Tranche A
loan, the Base Rate or the LIBO Rate. Interest under Base Rate loans were at the
higher of the lender's "Reference Rate" or the Federal Funds Rate plus .5%.
Interest under LIBO Rate loans were at the LIBO rate (reserve adjusted) plus 2%.
The Company could convert any portion of the outstanding debt from one interest
rate type to another in increments of $50,000 with a minimum transfer amount of
$250,000. At December 31, 1998, the Tranche A loan commitment amount was $38
million of which $30.9 million had been borrowed and the Tranche B loan
commitment amount was $12 million, of which $8.945 million had been borrowed. In
connection with the May 14, 1999 equity transaction, on May 17, 1999, the
Company repaid $9.6 million, the full amount then outstanding under Tranche B
and paid down Tranche A to $2.5 million.


<PAGE>   10

On September 30, 1999 the Company amended and restated the Credit Agreement to
increase the commitment from Bank of America and two additional banks to $100
million. The three-year revolver has an initial borrowing base of $40 million
increasing to $55 million upon the resolution of certain preferential purchase
rights associated with the September 1999 Arco East Texas acquisition.

The Company has a choice of two different interest rates; the Base Rate or the
LIBO Rate. The debt bears interest under the Base Rate (which is the higher of
the lender's "Prime Rate" or the Federal Funds Rate plus .5%) plus an applicable
margin of .75%. The debt bears interest under the LIBO Rate at the LIBO rate
(reserve adjusted) plus 1.75%. The Company may convert any portion of the
outstanding debt from one interest rate type to another in increments of
$500,000 with a minimum transfer amount of $1,000,000. Borrowings under the
Credit Agreement are approximately $19.6 million as of September 30, 1999.

Note 4: PROPERTY ACQUISITIONS

On September 13, 1999, the Company acquired interests in 40 leases, a waterflood
unit, over 60 royalty properties and an oil transportation contract in the East
Texas Field from Atlantic Richfield Company. The purchase price was $16 million.
The Company utilized the Credit Facility to acquire the properties.

The following Bargo Energy Company pro forma information gives effect to the
acquisition of the properties as if they had been acquired January 1, 1998:


<TABLE>
<CAPTION>
                                              Nine months ended
                                                 September 30
                                             1999            1998
                                          -------------------------

                                 (amounts in thousands except per share amount)


<S>                                       <C>              <C>
Revenues                                  $ 20,630         $ 15,815
Net Income (Loss)                         $ (1,633)        $  1,840
Net Income (Loss) per
   Common share -
   Basic and Diluted                      $   (.02)        $    .26
</TABLE>




Note 5: STOCK INCENTIVE PLAN

In May 1999 the Board of Directors adopted the 1999 Stock Incentive Plan which
provides for stock options to be granted to employees with exercise prices not
less than the fair market value of the underlying common stock. These options
will have a term of 10 years from the date of grant and will vest over a three
year period from the date of grant. During the nine months ended September 30,
1999 approximately 22 million options were granted under this plan to employees
of the company at exercise prices ranging from $.10 to $.25 per share.


Note 6: EARNINGS (LOSS) PER COMMON SHARE

Net income or loss per common share is based on the weighted average number of
common shares outstanding. The Company's common stock equivalents, which
consisted of stock options and warrants, were antidilutive in the three and nine
months ended September 30, 1999 and 1998.




<PAGE>   11

 ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
                                 OF OPERATIONS


This report includes "forward looking statements" within the meaning of Section
27A of the Securities Act of 1933, as amended, and Section 21E of the Securities
Exchange Act of 1934, as amended ("Exchange Act"). All statements other than
statements of historical fact included in the Report (and the exhibits hereto),
including without limitation, statements regarding the Company's financial
position and estimated quantities and net present values of reserves, are
forward looking statements. The Company can give no assurances that the
assumptions upon which such statements are based will prove to have been
correct. Important factors that could cause actual results to differ materially
from the Company's expectations ("Cautionary Statements") are disclosed in the
section "Risk Factors" included in the Company's Forms 10-KSB and other periodic
reports filed under the Exchange Act, which are herein incorporated by
reference. All subsequent written and oral forward looking statements
attributable to the Company or persons acting on its behalf are expressly
qualified by the Cautionary Statements.

THE COMPANY

Bargo Energy Company (the "Company" or "Bargo") is engaged through its
subsidiaries and subsidiary partnerships in the development of oil and natural
gas properties located onshore primarily in the Gulf Coast Region (Texas and
Louisiana) and California. The Company's principal business strategies include
(i) maximizing the value of its existing high-quality, long-life reserves
through efficient operating and marketing practices, (ii) conducting detailed
field studies using the newest technology to identify additional reserves and
exploration potential, and (iii) seeking acquisitions of producing properties,
with exploration and development potential in areas where the Company has
operating experience and expertise. In September 1999 the Company closed a $100
million bank revolving line of credit to supplement its $50 million private
equity financing in May 1999. Bargo and its management team intend to continue
its efforts to aggressively grow the Company's resource base both through oil
and gas property acquisitions and corporate consolidations.

As of December 31, 1998, the Company owned estimated net proved reserves of
approximately 15,145,000 barrels of oil equivalent. Per the Company's July 1,
1999 mid year reserve report the Company owned estimated net proved reserves of
approximately 21,288,000 barrels of oil equivalent. This represents a 40%
increase in total net proved reserves over December 31, 1998. This increase is
attributable to the Company's active acquisition program. Approximately 57% of
the Company's reserves are proved developed producing reserves. Quantities
stated as equivalent barrels of oil reserves are based on a factor of six mcf of
natural gas per barrel of oil.
<PAGE>   12

In August 1999, the Board of Directors increased the size of the Board from
seven to eight members and appointed Jonathan M. Clarkson as a director. Mr.
Clarkson was also appointed President and Chief Operating Officer of the Company
at that time. In November 1999, the Board of Directors appointed Mr. Frank
Pottow as a director, increasing the size of the Board to nine members. Mr.
Pottow is the Managing Director of SGC Partners II, L.L.C., a stockholder of the
Company. In connection with the appointment of Mr. Clarkson and Mr. Pottow to
the Board of Directors, the Shareholders Agreement among the Company and certain
stockholders of the Company was amended to provide that Mr. Clarkson would be
appointed to the Board of Directors and that Mr. Pottow would be appointed as a
representative of SGC Partners.


GENERAL

The Company's revenues, profitability and future growth and the carrying value
of its oil and gas properties are substantially dependent on prevailing prices
of oil and gas and its ability to find, develop and acquire additional oil and
gas reserves that are economically recoverable. The Company's ability to


<PAGE>   13

maintain or increase its borrowing capacity and to obtain additional capital on
attractive terms is also influenced by oil and gas prices.

Prices for oil and gas are subject to large fluctuations in response to
relatively minor changes in the supply of and demand for oil and gas, market
uncertainty and a variety of additional factors beyond the control of the
Company. These factors include weather conditions in the United States, the
condition of the United States economy, the actions of the Organization of
Petroleum Exporting Countries, governmental regulation, political stability in
the Middle East and elsewhere, the foreign supply of crude oil and natural gas,
the price of foreign imports and the availability of alternate fuel sources. Any
substantial and extended decline in the price of crude oil or natural gas would
have an adverse effect on the Company's carrying value of its proved reserves,
borrowing capacity, revenues, profitability and cash flows from operations.

The Company uses the full cost method of accounting for the Company's investment
in oil and gas properties. Under the full cost method of accounting, all costs
of acquisition, exploration and development of oil and gas reserves are
capitalized into a "full cost pool." Oil and gas properties in the pool, plus
estimated future expenditures to develop proved reserves and future abandonment,
site remediation and dismantlement costs, are depleted and charged to operations
using the unit of production method based on the portion of current production
to total estimated proved recoverable oil and gas reserves. To the extent that
such capitalized costs (net of depreciation, depletion and amortization) exceed
the discounted future net cash flows on an after-tax basis of estimated proved
oil and gas reserves, such excess costs are charged to operations. Once
incurred, the write down of oil and gas properties is not reversible at a later
date even if oil or natural gas prices increase.

The Company does not have a specific acquisition budget because of the
unpredictability of the timing and size of forthcoming acquisition activities.
There is no assurance that the Company will be able to identify suitable
acquisition candidates in the future, or that the Company will be successful in
the acquisition of producing properties. In order to finance any possible future
acquisitions, the Company will either use borrowings available under the its
credit facility or the Company may seek to obtain additional debt or equity
financing in the public or private capital markets. Further, there can be no
assurances that any future acquisitions made by the Company will be integrated
successfully into the Company's operations or will achieve desired profitability
objectives.

On September 13, 1999, the Company acquired interests in 40 leases, a waterflood
unit, over 60 royalty properties and an oil transportation contract in the East
Texas Field from Atlantic Richfield Company for $16 million. Current daily
production is approximately 2,500 net barrels of oil equivalent per day from 500
producing wells. The Company utilized the Credit Facility to acquire the
properties.

In June 1998 the Financial Accounting Standards Board issued SFAS 133"
Accounting for Derivative Instruments and Hedging Activities." This standard is
effective for fiscal years beginning after June 15, 1999 (January 1, 2000 for
the Company). SFAS 133 requires that all derivative instruments be recorded on
the balance sheet at their fair value. Changes in the fair value of derivatives
are recorded each period in current earnings or other comprehensive income,
depending on whether a derivative is designated as part of a hedge transaction
and, if it is, the type of hedge transaction. The Company has not yet completed
its evaluation of the impact of the adoption of this new standard.


<PAGE>   14

Company management chooses to implement pricing hedges as necessary to ensure
minimum levels of cash flow or as market conditions create opportunity.
Approximately 50% (or 150,000 MMBTU per month) of current natural gas production
is hedged through calendar year 1999. For the Company's South Coles Levee
production a hedge is in place for 65,000 MMBTU at prices ensuring a floor of
$2.00 per MMBTU and a ceiling of $2.45 per MMBTU based on Southern California
border prices. For the Company's Gulf Coast properties a hedge is in place for
85,000 MMBTU at prices ensuring a floor of $2.00 per MMBTU and a ceiling of
$2.04 per MMBTU based on Houston Ship Channel pricing.

At September 30, 1999 collars were in place for portions of the Company's oil
production for October 1 through September 2000 at floors of $18.00 and ceilings
of $20.75 and $23.08. Contracted volumes total 50,200 barrels per month
declining each month to 42,000 barrels. Beginning October 2000 through September
2001 the Company has two swaps in place at $17.55 and $18.05. Contracted volumes
total 41,350 barrels per month declining to 34,300 barrels per month
representing approximately 50% of the Company's projected oil production.


LIQUIDITY AND CAPITAL RESOURCES

The Company's primary sources of capital are its cash flows from operations,
borrowings, property sales and the issuance of debt and equity securities.

The Company reported consolidated net income of $739,255 for the quarter ended
September 30, 1999 compared to a consolidated net loss of $22,764 for the
quarter ended September 30, 1998. At September 30, 1999, the Company had working
capital of $2,210,865, which was a $1,776,589 increase from the $434,276 of
working capital that the Company had as of September 30, 1998. This increase in
working capital was due primarily to the increased oil and gas sales resulting
from the acquisition of proved reserves referred to above.

Effective August 14, 1998, the Company entered into a credit agreement with Bank
of America ("Credit Agreement"). Borrowings under the Credit Agreement are
secured by mortgages covering substantially all of the Company's producing oil
and gas properties as well as by certain pledges of the Company's subsidiaries
Common Stock. See "The Company." The Credit Agreement initially provided for a
commitment amount of $20 million and a $10.5 million borrowing base ("Borrowing
Base"). This Credit Agreement was amended and increased to $27.5 million on
November 15, 1998. In December 1998, the Company amended and restated the Credit
Agreement to increase the commitment amount to $50 million subject to a
borrowing base as determined by Bank of America on an acquisition by acquisition
basis. On September 30, 1999 the Company amended and restated the Credit
Agreement to increase the commitment from Bank of America and two additional
banks to $100 million. The three-year revolver has an initial borrowing base of
$40 million, increasing to $55 million upon the resolution of certain
preferential purchase rights on the recent Arco East Texas acquisition.

As of September 30, 1999 the Company has available over $20 million under its
existing Credit Agreement which increases to $35 million after resolution
of the preferential rights discussed above.


<PAGE>   15

Operating activities of the Company during the nine months ended September
30,1999 provided net cash of $81,951. In the same period during 1998, operating
activities provided net cash of $116,407. Investing activities in the nine
months ended September 30, 1999, used net cash of $27,549,310, primarily due to
the acquisition of oil and gas properties. For the same period in 1998,
investing activities used net cash of $7,187,420 to acquire oil and gas
properties. Financing activities in the nine months ended September 30, 1999
provided net cash of $27,372,986 primarily due to proceeds from the equity
transaction described above net of debt repayments. In the first nine months of
1998, financing activities provided $7,203,893 (net of debt repayments) which
was used primarily to acquire oil and gas properties.


RESULTS OF OPERATIONS


Comparison of Quarters Ended September 30, 1999 and 1998

Total revenues for the three months ended September 30, 1999 increased to
$4,303,551 from $812,326 for the same period in 1998, primarily due to
increased oil and gas sales from the acquisition of producing properties in the
fourth quarter of 1998 and May of 1999. Production costs increased from $488,305
in the three months ended September 30, 1998 to $1,869,260 in the three months
ended September 30, 1999 due to the purchase of proved reserves. General and
administrative expenses increased to $709,186 from $70,300 in 1998 due to
overhead associated with the Company's increased acquisition activity. The
Company generated net income of $739,255 for the three months ended September
30,1999 compared to a net loss of $22,764 for the same period in 1998, primarily
due to the acquisition of proved reserves and production attributable to such
reserves. The majority of the cash flow generated from these additional reserves
was primarily used to pay interest costs incurred in acquiring the reserves.
Interest expense for the three months ended September 30, 1999 was $221,402
compared to $124,385 for the same period in 1998. Depreciation, depletion and
amortization for the three months ended September 30, 1999 was $386,090. For the
same period in 1998, the total was $166,443. This increase is primarily a result
of increased production volumes.



Comparison of Nine months ended September 30, 1999 and 1998


Total revenues for the nine months ended September 30, 1999 increased to
$9,519,732 from $1,902,855 for the same period in 1998, primarily due to
increased oil and gas sales from the acquisition of producing properties.
Production costs increased from $1,131,754 in the nine months ended September
30, 1998 to $4,187,264 in the nine months ended September 30,1999 due to the
purchase of proved reserves. General and administrative expenses increased to
$2,376,692 from $290,953 in 1998 due to increased overhead associated with the
Company's increased acquisition activity. The Company had a net loss of $809,762
for the nine months ended September 30,1999 compared to a net loss of $181,098


<PAGE>   16

for the same period in 1998, primarily due to increased interest expense
associated with the acquisition of proved reserves. The majority of the cash
flow generated from these additional reserves was primarily used to pay interest
costs. Interest expense for the nine months ended September 30, 1999 was
$1,630,536 compared to $406,511 for the same period in 1998 primarily due to
interest on outstanding long term debt related to property acquisitions.
Depreciation, depletion and amortization for the first nine months of 1999 was
$2,558,658. For the same period in 1998, the total was $368,756. This increase
is primarily a result of increased production volumes.


INFLATION

The Company's activities have not been, and in the near term are not expected to
be, materially affected by inflation or changing prices in general. The
Company's oil exploration and production activities are generally affected by
prevailing prices for oil, however.


YEAR 2000 ISSUE

Year 2000 issues result from the inability of computer programs or computerized
equipment to accurately calculate, store or use a date subsequent to December
31, 1999. The erroneous date can be interpreted in a number of different ways;
typically the Year 2000 is interpreted as the year 1900. This could result in a
system failure or miscalculations causing disruptions of operations, including,
among other things, a temporary inability to process transactions, send invoices
or engage in similar normal business. Because the Company's software systems are
relatively new, the Company was aware of and considered Year 2000 issues at the
time of purchase or development of such systems. In addition, the Company has
recently completed an assessment of its core financial and operational software
systems to ensure compliance. The licensor of the Company's core financial
software system has certified that such software is Year 2000 compliant.
Additionally, other less critical software systems and various types of
equipment have been assessed and are believed to be compliant.

The Company believes that the potential impact, if any, of these less critical
systems not being Year 2000 compliant will at most require employees to manually
complete otherwise automated tasks or calculations and it should not impact the
Company's ability to continue exploration, drilling, production or sales
activities. The Company has initiated and will continue to have formal
communications with its significant suppliers, business partners and customers
to determine the extent to which the Company is vulnerable to those third
parties' failure to correct their own Year 2000 issues. There can be no
guarantee, however, that the systems of other companies on which the Company's
systems rely will be timely converted, or that a failure to convert by another
company, or a conversion that is incompatible with the Company's systems would
not have a material adverse effect on the Company.

The Company has determined it has no exposure to contingencies related to the
Year 2000 issue with respect to products sold to third parties. The Company has
and will utilize both internal and external resources to complete tasks and
perform testing necessary to address the Year 2000 issue. The Company has
substantially completed the Year 2000 project. The Company has not incurred, and
does not anticipate that it will incur, any significant costs relating to the
assessment and remediation of Year 2000 issues.





<PAGE>   17

                                               PART II
                                          OTHER INFORMATION


ITEM 6.           EXHIBITS AND REPORTS ON FORM 8-K

         (a)      Exhibits.

        EXHIBIT NUMBER                            TITLE OF DOCUMENT

      2.                        Plan of acquisition, reorganization,
                                arrangement, liquidation or succession

           2.1                  Purchase and Sale Agreement between Exxon
                                Corporation and Future Acquisition 1995, Ltd.,
                                et al. (Incorporated by reference from Exhibit
                                2.1 to the Company's Quarterly Report on Form
                                10-Q for the period ended June, 30, 1999, filed
                                with the Securities and Exchange Commission on
                                August 16, 1999)

           2.2                  Purchase and Sale Agreement by and Between
                                Atlantic Richfield Company and Future
                                Acquisition 1995, Ltd.

      3.                        Articles of Incorporation and By-laws

           3.1                  Articles of Incorporation of Bargo Energy
                                Company (Incorporated by reference from Exhibit
                                3.1 to the Company's Current Report on Form 8-K
                                dated April 26, 1999, filed with the Securities
                                and Exchange Commission on April 29, 1999)

           3.2                  Agreement and Plan of Merger, dated as of April
                                6, 1999 between Future Petroleum Corporation and
                                FPT Corporation (Incorporated by reference from
                                Exhibit 2.1 to the Company's Current Report on
                                Form 8-K dated April 26, 1999, filed with the
                                Securities and Exchange Commission on April 29,
                                1999)

           3.3                  By-laws of Bargo Energy Company (Incorporated by
                                reference from Exhibit 3.2 to the Company's
                                Current Report on Form 8-K dated April 26, 1999,
                                filed with the Securities and Exchange
                                Commission on April 29, 1999)

           3.4                  Amendment to Bargo Energy Company By-laws
                                (Incorporated by reference from Exhibit 3.4 to
                                the Company's Quarterly Report on Form 10-QSB
                                for the period ended March 31, 1999, filed with
                                the Securities and Exchange Commission on May
                                21, 1999)

      4.                        Instruments defining the rights of security
                                holders


<PAGE>   18


        EXHIBIT NUMBER                            TITLE OF DOCUMENT

           4.1                  Certificate of Designations of Cumulative
                                Redeemable Preferred Stock, Series B
                                (Incorporated by reference (Incorporated by
                                reference from Exhibit 4.1 to the Company's
                                Quarterly Report on Form 10-QSB for the period
                                ended March 31, 1999, filed with the Securities
                                and Exchange Commission on May 21, 1999)

      10.                       Material Contracts

           10.1                 Second Amended and Restated Shareholders'
                                Agreement, dated May 14, 1999, by and among
                                Bargo Energy Company, B. Carl Price, Don Wm.
                                Reynolds, Energy Capital Investment Company PLC,
                                EnCap Equity 1994 Limited Partnership, Bargo
                                Energy Resources, Ltd., TJG Investments, Inc.,
                                Bargo Energy Company, Tim J. Goff, Thomas
                                Barrow, James E. Sowell, Bargo Operating
                                Company, Inc., EnCap Energy Capital Fund III-B,
                                L.P., BOCP Energy Partners, L.P., EnCap Energy
                                Capital Fund III, L.P., Kayne Anderson Energy
                                Fund, L.P., BancAmerica Capital Investors SBIC
                                I, L.P., Eos Partners, L.P., Eos Partners SBIC,
                                L.P., Eos Partners SBIC II, L.P., and SGC
                                Partners II LLC. (Incorporated by reference from
                                Exhibit 10.1 to the Company's Quarterly Report
                                on Form 10-QSB for the period ended March 31,
                                1999, filed with the Securities and Exchange
                                Commission on May 21, 1999)

           10.2                 Second Amendment to Registration Rights
                                Agreement dated May 14, 1999 between Energy
                                Capital Investment Company PLC, EnCap Equity
                                1994 Limited Partnership, EnCap Energy Capital
                                Fund III-B, L.P., BOCP Energy Partners, L.P.,
                                EnCap Energy Capital Fund III, L.P., Kayne
                                Anderson Energy Fund, L.P., BancAmerica Capital
                                Investors SBIC I, L.P., Eos Partners, L.P., Eos
                                Partners SBIC, L.P., Eos Partners SBIC II, L.P.,
                                and SGC Partners II LLC. (Incorporated by
                                reference from Exhibit 10.2 to the Company's
                                Quarterly Report on Form 10-QSB for the period
                                ended March 31, 1999, filed with the Securities
                                and Exchange Commission on May 21, 1999)

           10.3                 Consent to Amendment to Registration Rights
                                Agreement by TJG Investments, Inc., Bargo Energy
                                Company, Bargo Energy Resources, Ltd., Bargo
                                Operating Company, Inc., Tim J. Goff, Thomas
                                Barrow, James E. Sowell, B. Carl Price, Don Wm.
                                Reynolds, Christie Price, Robert Price and
                                Charles D. Laudeman (Incorporated by reference
                                from Exhibit 10.3 to the Company's Quarterly
                                Report on Form 10-QSB for the period ended March
                                31, 1999, filed with the Securities and Exchange
                                Commission on May 21, 1999)

           10.4                 Consent and Agreement dated May 14, 1999 be
                                between Bargo Energy Company and Bank of America
                                National Trust and Savings Association
                                (Incorporated by reference from Exhibit 10.6 to
                                the Company's Quarterly Report on Form 10-QSB
                                for the


<PAGE>   19


        EXHIBIT NUMBER                            TITLE OF DOCUMENT

                                period ended March 31, 1999, filed with the
                                Securities and Exchange Commission on May 21,
                                1999)

           10.5                 SBA Side Letter dated May 14, 1999 between Bargo
                                Energy Company and BancAmerica Capital Investors
                                SBIC I, L.P., Eos Partners SBIC, L.P., Eos
                                Partners SBIC II, L.P., and SGC Partners II LLC.
                                (Incorporated by reference from Exhibit 10.7 to
                                the Company's Quarterly Report on Form 10-QSB
                                for the period ended March 31, 1999, filed with
                                the Securities and Exchange Commission on May
                                21, 1999)

           10.6                 SBA Side Letter dated May 14, 1999 between Bargo
                                Energy Company, EnCap Equity 1994 Limited
                                Partnership, TJG Investments, Inc. Bargo Energy
                                Company, Bargo Energy Resources, Ltd., Bargo
                                Operating Company, Inc., Tim J. Goff and
                                BancAmerica Capital Investors SBIC I, L.P., Eos
                                Partners SBIC, L.P., Eos Partners SBIC II, L.P.,
                                and SGC Partners II LLC. (Incorporated by
                                reference from Exhibit 10.8 to the Company's
                                Quarterly Report on Form 10-QSB for the period
                                ended March 31, 1999, filed with the Securities
                                and Exchange Commission on May 21, 1999)

           10.7                 Stock Purchase Agreement dated May 14, 1999
                                between Bargo Energy Company and Energy Capital
                                Investment Company PLC, EnCap Energy Capital
                                Fund III-B, L.P., BOCP Energy Partners, L.P.,
                                EnCap Energy Capital Fund III, L.P., Kayne
                                Anderson Energy Fund, L.P., BancAmerica Capital
                                Investors SBIC I, L.P., Eos Partners, L.P., Eos
                                Partners SBIC, L.P., Eos Partners SBIC II, L.P.,
                                and SGC Partners II LLC. (Incorporated by
                                reference from Exhibit 10.9 to the Company's
                                Quarterly Report on Form 10-QSB for the period
                                ended March 31, 1999, filed with the Securities
                                and Exchange Commission on May 21, 1999)

           10.8                 Bargo Energy Company 1999 Stock Incentive Plan
                                (Incorporated by reference from Exhibit 10.10 to
                                the Company's Quarterly Report on Form 10-QSB
                                for the period ended March 31, 1999, filed with
                                the Securities and Exchange Commission on May
                                21, 1999)

           10.9                 Confidentiality and Non-compete Agreement dated
                                May 14, 1999 between Bargo Energy Company and
                                Tim J. Goff (Incorporated by reference from
                                Exhibit 10.11 to the Company's Quarterly Report
                                on Form 10-QSB for the period ended March 31,
                                1999, filed with the Securities and Exchange
                                Commission on May 21, 1999)

           10.10                Second Amended and Restated Credit Agreement,
                                Dated as of September 30, 1999, among Bargo
                                Energy Company, Bank of America, N.A. and
                                Certain Financial Institutions


<PAGE>   20


        EXHIBIT NUMBER                            TITLE OF DOCUMENT

           10.11                Registration Rights Agreement among the Company
                                and Bargo Energy Resources, Ltd. dated August
                                14, 1998 (Incorporated by reference from Exhibit
                                10.1 to the Company's Quarterly Report on Form
                                10-Q for the period ended June 30, 1998, filed
                                with the Securities and Exchange Commission on
                                August 25, 1998)

           10.12                First Amendment to Registration Rights Agreement
                                among the Company, Bargo Energy Resources, Ltd.,
                                Bargo Energy Company, TJG Investments, Inc. and
                                certain other shareholders dated December 15,
                                1998 (Incorporated by reference from Exhibit
                                99.2 to the Company's Current Report on Form 8-K
                                dated December 15, 1998, filed with the
                                Securities and Exchange Commission on December
                                30, 1998)

           10.13                Registration Rights Agreement dated November 25,
                                1997, among the Company, Energy Capital
                                Investment Company PLC, and EnCap Equity 1994
                                Limited Partnership (Incorporated by reference
                                from Exhibit 10.05 to the Company's Current
                                Report on Form 8-K dated November 25, 1997,
                                filed with the Securities and Exchange
                                Commission on December 10, 1997)

           10.14                Registration Rights Agreement among the Company,
                                Energy Capital Investment Company PLC and EnCap
                                Equity 1994 Limited Partnership dated August 14,
                                1998 (Incorporated by reference from Exhibit
                                10.2 to the Company's Quarterly Report on Form
                                10-Q for the period ended June 30, 1998, filed
                                with the Securities and Exchange Commission on
                                August 25, 1998)

           10.15                First Amendment to Registration Rights Agreement
                                among the Company, Energy Capital Investment
                                Company PLC and EnCap Equity 1994 Limited
                                Partnership dated December 15, 1998
                                (Incorporated by reference from Exhibit 99.4 to
                                the Company's Current Report on Form 8-K dated
                                December 15, 1998, filed with the Securities and
                                Exchange Commission on December 30, 1998)

           10.16                Registration Rights Agreement among the Company,
                                B. Carl Price and certain other shareholders
                                dated August 14, 1998 (Incorporated by reference
                                from Exhibit 10.3 to the Company's Quarterly
                                Report on Form 10-Q for the period ended June
                                30, 1998, filed with the Securities and Exchange
                                Commission on August 25, 1998)

           10.17                First Amendment to Registration Rights Agreement
                                among the Company, B. Carl Price and certain
                                other shareholders dated December 15, 1998
                                (Incorporated by reference from Exhibit 99.6 to
                                the Company's Current Report on Form 8-K dated
                                December 15, 1998, filed with the Securities and
                                Exchange Commission on December 30, 1998)


<PAGE>   21


        EXHIBIT NUMBER                            TITLE OF DOCUMENT

           10.18                Stock Purchase Warrant by the Company to Bargo
                                Energy Resources, Ltd. dated August 14, 1998
                                (Incorporated by reference from Exhibit 10.4 to
                                the Company's Quarterly Report on Form 10-Q for
                                the period ended June 30, 1998, filed with the
                                Securities and Exchange Commission on August 25,
                                1998)

           10.19                1993 Employee Incentive Plan (Incorporated by
                                reference from the Company's Annual Report on
                                Form 10-K for the fiscal year ended December 30,
                                1993, filed with the Securities and Exchange
                                Commission on May 20, 1994)

           10.20                First Amendment to Second Amended and Restated
                                Shareholders' Agreement, dated August 11, 1999

      11.                       Statement regarding computation of per share
                                earnings(1)

      15.                       Letter on unaudited interim financial
                                information(1)

      18.                       Letter on change in accounting principles(1)

      19.                       Report furnished to security holders(1)

      22.                       Published report regarding matters submitted to
                                vote(1)

      24.                       Power of attorney (1)

      27.                       Financial data schedule

      99.                       Additional exhibits

- -----------------------------------

(1)      Inapplicable to this filing.

(b)      Reports on Form 8-K.

         The following reports on Form 8-K were filed during the quarterly
period ended September 30, 1999:

1)       Current Report on Form 8-K dated August 17, 1999, filed August 24, 1999
         reporting Item 5. Other Events and Item 7. Financial Statements and
         Exhibits.

2)       Current Report on Form 8-K dated September 8, 1999, filed October 12,
         1999 reporting Item 2. Acquisition or Disposition of Assets and Item 7.
         Financial Statements and Exhibits.


<PAGE>   22




                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934, as
amended, the registrant has duly caused this report to be signed on its behalf
by the undersigned thereunto duly authorized.

                                             BARGO ENERGY COMPANY
                                             (Registrant)



                                             By: /s/ Kimberly G. Seekely
                                                 Kimberly G. Seekely,
                                                 On behalf of the Registrant and
                                                 as Vice President - Treasurer



<PAGE>   23




         The following exhibits are included as part of this report:

                                  EXHIBIT INDEX

<TABLE>
<CAPTION>
        EXHIBIT NUMBER                         TITLE OF DOCUMENT
        --------------                         -----------------

<S>                             <C>
      2.                        Plan of acquisition, reorganization,
                                arrangement, liquidation or succession

           2.1                  Purchase and Sale Agreement between Exxon
                                Corporation and Future Acquisition 1995, Ltd.,
                                et al. (Incorporated by reference from Exhibit
                                2.1 to the Company's Quarterly Report on Form
                                10-Q for the period ended June, 30, 1999, filed
                                with the Securities and Exchange Commission on
                                August 16, 1999)

           2.2                  Purchase and Sale Agreement by and Between
                                Atlantic Richfield Company and Future
                                Acquisition 1995, Ltd.

      3.                        Articles of Incorporation and By-laws

           3.1                  Articles of Incorporation of Bargo Energy
                                Company (Incorporated by reference from Exhibit
                                3.1 to the Company's Current Report on Form 8-K
                                dated April 26, 1999, filed with the Securities
                                and Exchange Commission on April 29, 1999)

           3.2                  Agreement and Plan of Merger, dated as of April
                                6, 1999 between Future Petroleum Corporation and
                                FPT Corporation (Incorporated by reference from
                                Exhibit 2.1 to the Company's Current Report on
                                Form 8-K dated April 26, 1999, filed with the
                                Securities and Exchange Commission on April 29,
                                1999)

           3.3                  By-laws of Bargo Energy Company (Incorporated by
                                reference from Exhibit 3.2 to the Company's
                                Current Report on Form 8-K dated April 26, 1999,
                                filed with the Securities and Exchange
                                Commission on April 29, 1999)

           3.4                  Amendment to Bargo Energy Company By-laws
                                (Incorporated by reference from Exhibit 3.4 to
                                the Company's Quarterly Report on Form 10-QSB
                                for the period ended March 31, 1999, filed with
                                the Securities and Exchange Commission on May
                                21, 1999)

      4.                        Instruments defining the rights of security
                                holders

           4.1                  Certificate of Designations of Cumulative
                                Redeemable Preferred Stock, Series B
                                (Incorporated by reference (Incorporated by
                                reference from Exhibit 4.1 to the Company's
                                Quarterly Report on Form 10-QSB for the period
                                ended March 31, 1999, filed with the Securities
                                and Exchange Commission on May 21, 1999)

      10.                       Material Contracts
</TABLE>


<PAGE>   24


<TABLE>
<CAPTION>
        EXHIBIT NUMBER                          TITLE OF DOCUMENT
        --------------                          -----------------

<S>                             <C>
           10.1                 Second Amended and Restated Shareholders'
                                Agreement, dated May 14, 1999, by and among
                                Bargo Energy Company, B. Carl Price, Don Wm.
                                Reynolds, Energy Capital Investment Company PLC,
                                EnCap Equity 1994 Limited Partnership, Bargo
                                Energy Resources, Ltd., TJG Investments, Inc.,
                                Bargo Energy Company, Tim J. Goff, Thomas
                                Barrow, James E. Sowell, Bargo Operating
                                Company, Inc., EnCap Energy Capital Fund III-B,
                                L.P., BOCP Energy Partners, L.P., EnCap Energy
                                Capital Fund III, L.P., Kayne Anderson Energy
                                Fund, L.P., BancAmerica Capital Investors SBIC
                                I, L.P., Eos Partners, L.P., Eos Partners SBIC,
                                L.P., Eos Partners SBIC II, L.P., and SGC
                                Partners II LLC. (Incorporated by reference from
                                Exhibit 10.1 to the Company's Quarterly Report
                                on Form 10-QSB for the period ended March 31,
                                1999, filed with the Securities and Exchange
                                Commission on May 21, 1999)

           10.2                 Second Amendment to Registration Rights
                                Agreement dated May 14, 1999 between Energy
                                Capital Investment Company PLC, EnCap Equity
                                1994 Limited Partnership, EnCap Energy Capital
                                Fund III-B, L.P., BOCP Energy Partners, L.P.,
                                EnCap Energy Capital Fund III, L.P., Kayne
                                Anderson Energy Fund, L.P., BancAmerica Capital
                                Investors SBIC I, L.P., Eos Partners, L.P., Eos
                                Partners SBIC, L.P., Eos Partners SBIC II, L.P.,
                                and SGC Partners II LLC. (Incorporated by
                                reference from Exhibit 10.2 to the Company's
                                Quarterly Report on Form 10-QSB for the period
                                ended March 31, 1999, filed with the Securities
                                and Exchange Commission on May 21, 1999)

           10.3                 Consent to Amendment to Registration Rights
                                Agreement by TJG Investments, Inc., Bargo Energy
                                Company, Bargo Energy Resources, Ltd., Bargo
                                Operating Company, Inc., Tim J. Goff, Thomas
                                Barrow, James E. Sowell, B. Carl Price, Don Wm.
                                Reynolds, Christie Price, Robert Price and
                                Charles D. Laudeman (Incorporated by reference
                                from Exhibit 10.3 to the Company's Quarterly
                                Report on Form 10-QSB for the period ended March
                                31, 1999, filed with the Securities and Exchange
                                Commission on May 21, 1999)

           10.4                 Consent and Agreement dated May 14, 1999 be
                                between Bargo Energy Company and Bank of America
                                National Trust and Savings Association
                                (Incorporated by reference from Exhibit 10.6 to
                                the Company's Quarterly Report on Form 10-QSB
                                for the period ended March 31, 1999, filed with
                                the Securities and Exchange Commission on May
                                21, 1999)

           10.5                 SBA Side Letter dated May 14, 1999 between Bargo
                                Energy Company and BancAmerica Capital Investors
                                SBIC I, L.P., Eos Partners SBIC, L.P., Eos
                                Partners SBIC II, L.P., and SGC Partners
</TABLE>


<PAGE>   25


<TABLE>
<CAPTION>
        EXHIBIT NUMBER                          TITLE OF DOCUMENT
        --------------                          -----------------

<S>                             <C>
                                II LLC. (Incorporated by reference from Exhibit
                                10.7 to the Company's Quarterly Report on Form
                                10-QSB for the period ended March 31, 1999,
                                filed with the Securities and Exchange
                                Commission on May 21, 1999)

           10.6                 SBA Side Letter dated May 14, 1999 between Bargo
                                Energy Company, EnCap Equity 1994 Limited
                                Partnership, TJG Investments, Inc. Bargo Energy
                                Company, Bargo Energy Resources, Ltd., Bargo
                                Operating Company, Inc., Tim J. Goff and
                                BancAmerica Capital Investors SBIC I, L.P., Eos
                                Partners SBIC, L.P., Eos Partners SBIC II, L.P.,
                                and SGC Partners II LLC. (Incorporated by
                                reference from Exhibit 10.8 to the Company's
                                Quarterly Report on Form 10-QSB for the period
                                ended March 31, 1999, filed with the Securities
                                and Exchange Commission on May 21, 1999)

           10.7                 Stock Purchase Agreement dated May 14, 1999
                                between Bargo Energy Company and Energy Capital
                                Investment Company PLC, EnCap Energy Capital
                                Fund III-B, L.P., BOCP Energy Partners, L.P.,
                                EnCap Energy Capital Fund III, L.P., Kayne
                                Anderson Energy Fund, L.P., BancAmerica Capital
                                Investors SBIC I, L.P., Eos Partners, L.P., Eos
                                Partners SBIC, L.P., Eos Partners SBIC II, L.P.,
                                and SGC Partners II LLC. (Incorporated by
                                reference from Exhibit 10.9 to the Company's
                                Quarterly Report on Form 10-QSB for the period
                                ended March 31, 1999, filed with the Securities
                                and Exchange Commission on May 21, 1999)

           10.8                 Bargo Energy Company 1999 Stock Incentive Plan
                                (Incorporated by reference from Exhibit 10.10 to
                                the Company's Quarterly Report on Form 10-QSB
                                for the period ended March 31, 1999, filed with
                                the Securities and Exchange Commission on May
                                21, 1999)

           10.9                 Confidentiality and Non-compete Agreement dated
                                May 14, 1999 between Bargo Energy Company and
                                Tim J. Goff (Incorporated by reference from
                                Exhibit 10.11 to the Company's Quarterly Report
                                on Form 10-QSB for the period ended March 31,
                                1999, filed with the Securities and Exchange
                                Commission on May 21, 1999)

           10.10                Second Amended and Restated Credit Agreement,
                                Dated as of September 30, 1999, among Bargo
                                Energy Company, Bank of America, N.A. and
                                Certain Financial Institutions

           10.11                Registration Rights Agreement among the Company
                                and Bargo Energy Resources, Ltd. dated August
                                14, 1998 (Incorporated by reference from Exhibit
                                10.1 to the Company's Quarterly Report on Form
                                10-Q for the period ended June 30, 1998, filed
                                with the Securities and Exchange Commission on
                                August 25, 1998)
</TABLE>


<PAGE>   26


<TABLE>
<CAPTION>
        EXHIBIT NUMBER                          TITLE OF DOCUMENT
        --------------                          -----------------

<S>                             <C>
           10.12                First Amendment to Registration Rights Agreement
                                among the Company, Bargo Energy Resources, Ltd.,
                                Bargo Energy Company, TJG Investments, Inc. and
                                certain other shareholders dated December 15,
                                1998 (Incorporated by reference from Exhibit
                                99.2 to the Company's Current Report on Form 8-K
                                dated December 15, 1998, filed with the
                                Securities and Exchange Commission on December
                                30, 1998)

           10.13                Registration Rights Agreement dated November 25,
                                1997, among the Company, Energy Capital
                                Investment Company PLC, and EnCap Equity 1994
                                Limited Partnership (Incorporated by reference
                                from Exhibit 10.05 to the Company's Current
                                Report on Form 8-K dated November 25, 1997,
                                filed with the Securities and Exchange
                                Commission on December 10, 1997)

           10.14                Registration Rights Agreement among the Company,
                                Energy Capital Investment Company PLC and EnCap
                                Equity 1994 Limited Partnership dated August 14,
                                1998 (Incorporated by reference from Exhibit
                                10.2 to the Company's Quarterly Report on Form
                                10-Q for the period ended June 30, 1998, filed
                                with the Securities and Exchange Commission on
                                August 25, 1998)

           10.15                First Amendment to Registration Rights Agreement
                                among the Company, Energy Capital Investment
                                Company PLC and EnCap Equity 1994 Limited
                                Partnership dated December 15, 1998
                                (Incorporated by reference from Exhibit 99.4 to
                                the Company's Current Report on Form 8-K dated
                                December 15, 1998, filed with the Securities and
                                Exchange Commission on December 30, 1998)

           10.16                Registration Rights Agreement among the Company,
                                B. Carl Price and certain other shareholders
                                dated August 14, 1998 (Incorporated by reference
                                from Exhibit 10.3 to the Company's Quarterly
                                Report on Form 10-Q for the period ended June
                                30, 1998, filed with the Securities and Exchange
                                Commission on August 25, 1998)

           10.17                First Amendment to Registration Rights Agreement
                                among the Company, B. Carl Price and certain
                                other shareholders dated December 15,
                                1998(Incorporated by reference from Exhibit 99.6
                                to the Company's Current Report on Form 8-K
                                dated December 15, 1998, filed with the
                                Securities and Exchange Commission on December
                                30, 1998)

           10.18                Stock Purchase Warrant by the Company to Bargo
                                Energy Resources, Ltd. dated August 14, 1998
                                (Incorporated by reference from Exhibit 10.4 to
                                the Company's Quarterly Report on Form 10-Q for
                                the period ended June 30, 1998, filed with the
                                Securities and Exchange Commission on August 25,
                                1998)
</TABLE>


<PAGE>   27


<TABLE>
<CAPTION>
        EXHIBIT NUMBER                           TITLE OF DOCUMENT
        --------------                           -----------------

<S>                             <C>
           10.19                1993 Employee Incentive Plan (Incorporated by
                                reference from the Company's Annual Report on
                                Form 10-K for the fiscal year ended December 30,
                                1993, filed with the Securities and Exchange
                                Commission on May 20, 1994)

           10.20                First Amendment to Second Amended and Restated
                                Shareholders' Agreement, dated August 11, 1999

      11.                       Statement regarding computation of per share earnings(1)

      15.                       Letter on unaudited interim financial information(1)

      18.                       Letter on change in accounting principles(1)

      19.                       Report furnished to security holders(1)

      22.                       Published report regarding matters submitted to vote(1)

      24.                       Power of attorney(1)

      27.                       Financial data schedule

      99.                       Additional exhibits
</TABLE>


- -----------------------------------

(1)      Inapplicable to this filing.



<PAGE>   1
                           PURCHASE AND SALE AGREEMENT



                                 BY AND BETWEEN



                           ATLANTIC RICHFIELD COMPANY
                             A DELAWARE CORPORATION,



                                       AND



                          FUTURE ACQUISITION 1995, LTD.
                           A TEXAS LIMITED PARTNERSHIP



                                      DATED
                                 AUGUST 3, 1999


                                    EFFECTIVE
                                 OCTOBER 1, 1999



<PAGE>   2






                                    EXHIBITS

A             -   Leasehold Interests and Allocated Values
B             -   Excluded Assets
2.2           -   Gas Production Imbalances
3.4           -   Form of Title Defect Notice
3.6           -   Allocation of Value
4.7           -   Material Changes in Last Year
4.9           -   Material Defects
4.16          -   Pending and Proposed Operations and Capital Projects
9.6           -   Litigation
10.2(a)       -   Form of Conveyance, Assignment and Bill of Sale
10.2(d)       -   Form of Property Transfer Accounting Agreement
10.2(l)       -   Form of Surface Lease Agreement


                                     Page 2


<PAGE>   3



                            SCHEDULE OF DEFINED TERMS
<TABLE>
<CAPTION>
Term                                                        Where Defined
- ----                                                        -------------
<S>                                                        <C>
Adjusted Purchase Price.....................................Section 2.2
Adjustment Amount...........................................Section 2.2(b)(v)
Agreement...................................................Heading
Allocated Value.............................................Section 3.6
ARCO........................................................Heading
ARCO Indemnified Parties....................................Section 7.4
Assets......................................................Section 1.1
Assumed Obligations.........................................Section 11.4(a)
Business Days...............................................Section 2.3(a)
CERCLA......................................................Section 16.3
Claimant....................................................Section 13.5(b)
Claims......................................................Section 16.2
Closing.....................................................Section 10.1
Closing Date................................................Section 10.1
Code........................................................Section 4.5
Data........................................................Section 1.1(c)
Defect Value................................................Section 3.4
Deposit.....................................................Section 2.1(c)
Documents...................................................Section 14.1
Effective Date..............................................Section 1.1
Environmental Laws..........................................Section 16.3
Environmental Reports.......................................Section 16.1
Estimated Adjusted Purchase Price...........................Section 2.3(b)
Excluded Assets.............................................Section 1.1(b)
Indemnitor..................................................Section 13.5(b)
Interim Period..............................................Section 6.2
Leasehold Interests.........................................Section 1.1(a)
Losses......................................................Section 11.4(b)
Marketable Title............................................Section 3.2
Material Agreements.........................................Section 4.8
Notification Deadline.......................................Section 3.4
OSHA........................................................Section 16.3
Permitted Encumbrances......................................Section 3.3
Prior Confidentiality Agreements............................Section 7.2
Property....................................................Section 3.2(b)
Property Taxes..............................................Section 13.1
Purchase Price..............................................Section 2.1(a)
Purchaser...................................................Heading
Purchaser Indemnified Parties...............................Section 11.4(c)
RCRA........................................................Section 16.3
Records.....................................................Section 1.1(d)
SARA........................................................Section 16.3
Title Defect................................................Section 3.4
Title Increase..............................................Section 3.5(c)
Valued Assets...............................................Section 3.2
</TABLE>


                                     Page 3

<PAGE>   4


                           PURCHASE AND SALE AGREEMENT

         This Purchase and Sale Agreement ("Agreement") is made and entered into
this 3rd day of August, 1999, by and between ATLANTIC RICHFIELD COMPANY, a
Delaware corporation ("ARCO"), and FUTURE ACQUISITION 1995, LTD., a Texas
limited partnership ("PURCHASER").

                                    RECITALS

         ARCO desires to sell to Purchaser, and Purchaser desires to purchase
from ARCO, certain oil and gas properties and related assets on the terms and
conditions set forth in this Agreement,

         NOW, THEREFORE, for and in consideration of the premises and of the
mutual covenants and agreements contained herein, ARCO and Purchaser hereby
agree as follows:

                          ARTICLE 1 - PURCHASE AND SALE

         1.1 PURCHASE AND SALE OF ASSETS. On the Closing Date, but effective as
of 7:00 a.m. Central Time, October 1, 1999 (the "Effective Date"), subject to
the terms and conditions of this Agreement, ARCO agrees to sell and convey to
Purchaser, and Purchaser agrees to purchase and pay for, all of ARCO's right,
title and interest in and to the following assets (the "Assets"):

         (a) The oil, gas and mineral leasehold estates and other real property
         and mineral interests described in Exhibit A, together with all of
         ARCO's rights in respect of any pooled, communitized or unitized
         acreage of which any such interest is a part (collectively, the
         "Leasehold Interests");

         (b) To the extent same are specifically attributable or allocable to
         the Leasehold Interests, (i) all wells, equipment and facilities that,
         as of the Closing Date, are located on and used solely and directly in
         connection with the production or treatment of oil and gas from the
         Leasehold Interests, (ii) all oil and gas and other hydrocarbon
         volumes produced on or after the Effective Date, (iii) to the extent
         same are assignable or transferable by ARCO without restriction under
         applicable law or third-party agreements (without the payment of any
         funds or other consideration), all orders, contracts, agreements and
         other instruments (excluding any instruments subject or relating to
         attorney/ client privilege), (iv) to the extent same are assignable
         or transferable by ARCO under applicable law or third-party agreements
         (without the payment of any funds or other consideration), all
         easements, authorizations, permits and similar rights and interests,
         and (v) all other rights, privileges, benefits, powers and obligations
         conferred or imposed upon the owner and holder of the Leasehold
         Interests;

         (c) Any and all mineral fee interests, mineral servitudes, royalty
         interests, overriding royalty interests, net profits interests,
         production payments and all other interests of every kind and
         character in and to the properties and lands described on Exhibit A
         and/or which relate to the Leasehold Interests, the lands covered
         thereby or the production of hydrocarbons therefrom;

         (d) All office buildings, warehouses, other buildings and permanent
         improvements, surface leases, vehicles, trucks, warehouse inventory,
         parts, supplies, office furniture, fixtures and equipment, computers,
         printers, telephone systems and all other tangible assets used or held
         for use in connection with ARCO's ownership or operation of the
         Leasehold Interests and other Assets;

         (e) That certain Crude Oil Buy/Sell Contract made and entered into
         effective December 1, 1995, by and between ARCO Permian, a unit of
         Atlantic Richfield Company, and Sun Company, Inc. (R&M), as amended
         from time to time, insofar as applicable to the Leasehold Interests;

         (f) All casing leak allowable transfers, earned salt water allowables,
         key well allowable transfers and similar rights and interests related
         to or arising out of the Leasehold Interests and the production of and
         rights to produce hydrocarbons therefrom; and

         (g) To the extent same are specifically attributable or allocable to
         the Leasehold Interests, originals, to the extent available, or copies
         of the following records: (i) lease and land records, (ii) development
         geological records, (iii) operations, production and engineering
         records, and (iv) facility and well records, in each case excluding
         any exploration geological records, any interpretive or forecast data,
         any records subject or relating to attorney/client privilege and any
         such records or data that are not assignable pursuant to the terms of
         applicable law or third-party agreements (without the payment of any
         funds or other consideration) (collectively, the "Records").

         SAVE AND EXCEPT the assets and properties described in Exhibit B and
any other assets and properties excluded pursuant to the terms hereof, and all
other property, real, personal or intellectual, not expressly covered herein in
Section 1.1 (the "Excluded Assets").

Purchase and Sale Agreement          Page 4

<PAGE>   5

                           ARTICLE 2 - PURCHASE PRICE

         2.1 PURCHASE PRICE; METHOD OF PAYMENT; DEPOSIT

         (a) The purchase price for the Assets shall be $16,000,000.00 (the
         "Purchase Price"), which amount shall be adjusted as provided in
         Section 2.2.

         (b) All amounts required under this Article 2 to be paid by any party
         hereto to another party hereto shall be made by wire transfer of
         immediately available funds to an account designated by the payee
         thereof, which designation shall be made not later than two Business
         Days prior to the date such payment is due.

         (c) On July 21, 1999, Purchaser paid to ARCO, and ARCO acknowledges
         receipt of, a performance deposit in the amount of $2,000,000.00 (the
         "Deposit"), which amount shall be held by ARCO and distributed as
         follows:

                  (i) if this Agreement is terminated as provided in Section
                  12.1(a) or Section 12.1(b), the Deposit shall be returned by
                  ARCO to Purchaser;

                  (ii) if this Agreement is terminated by either party pursuant
                  to the termination right provided in Section 12.1(c) and at
                  such time all of Purchaser's conditions to Closing as set
                  forth in Article 9 have not been satisfied or waived (and such
                  failure is not due to a breach by Purchaser of its obligations
                  hereunder), the Deposit shall be returned by ARCO to
                  Purchaser;

                  (iii) if this Agreement is terminated by either party pursuant
                  to the termination right provided in Section 12.1(c) and at
                  such time all of Purchaser's conditions to Closing as set
                  forth in Article 9 have been satisfied or waived, the Deposit
                  shall be retained by ARCO; and

                  (iv) if Closing occurs, ARCO shall apply the Deposit towards
                  the Purchase Price.

         ARCO and Purchaser acknowledge and agree that until ARCO is obligated
         to distribute the Deposit as provided above, ARCO may invest the
         Deposit in such investments as it deems appropriate and any income
         resulting therefrom shall be the property of ARCO and not Purchaser.

         (d) Purchaser further acknowledges and agrees that if ARCO becomes
         entitled to the Deposit pursuant to the provisions of Section
         2.1(c)(iii), ARCO's damages under such circumstances would be difficult
         to ascertain and ARCO shall be entitled to liquidated damages in an
         amount equal to the Deposit. Accordingly, the retention by ARCO of the
         Deposit as provided in Section 2.1(c)(iii) above shall be deemed to
         constitute the payment by Purchaser to ARCO of such liquidated damages,
         but in no event shall such retention of the Deposit or deemed payment
         of liquidated damages constitute or be construed as a penalty. If ARCO
         becomes entitled to retain the Deposit pursuant to Section 2.1(c)(iii)
         above, such retention shall constitute the sole remedy of ARCO under
         this Agreement for Purchaser's failure to consummate the transactions
         contemplated hereunder (such limitation shall not limit the rights of
         ARCO under any of the provisions of this Agreement that survive a
         termination and continue in full force and effect pursuant to Section
         12.2).

         2.2 ADJUSTMENTS TO PURCHASE PRICE. The Purchase Price for the Assets
shall be adjusted as follows (the resulting amount being herein referred to as
the "Adjusted Purchase Price"):

         (a) The Purchase Price shall be increased by an amount equal to the sum
         of the following amounts (determined without duplication and on an
         accrual basis in accordance with generally accepted accounting
         principles consistently applied):

                  (i) the amount of all expenses (net to ARCO's interest)
                  incurred and paid or to be paid by or on behalf of ARCO that
                  are attributable to the ownership or operation of the Assets
                  and to the period of time from and after the Effective Date,
                  including without limitation, capital expenditures, royalties,
                  ad valorem, property and similar taxes and assessments,
                  severance, sales and production taxes (but excluding income
                  taxes and franchise taxes), rentals and similar charges,
                  amounts billed under applicable operating agreements and
                  prepaid expenses; and

                  (ii) an amount equal to the value allocated to all Title
                  Increases in accordance with Section 3.5(c).

         (b) The Purchase Price shall be decreased by an amount equal to the sum
         of the following amounts (determined without duplication and on an
         accrual basis in accordance with generally accepted accounting
         principles consistently applied):

                  (i) the amount of all proceeds (net to ARCO's interest) earned
                  and received or to be received by or on behalf of ARCO (other
                  than proceeds from the exercise by third parties of
                  preferential rights to purchase all or any portion of the
                  Leasehold Interests) that are attributable to the ownership or
                  operation of the Assets after the Effective Date and to the

Purchase and Sale Agreement          Page 5

<PAGE>   6

                  period of time from and after the Effective Date, it being
                  agreed that such amount shall not include proceeds from the
                  sale subsequent to the Effective Date of merchantable
                  hydrocarbons in storage above the pipeline connection at the
                  Effective Date;

                  (ii) an amount equal to the value of all Title Defects and
                  excluded Leasehold Interests as determined in accordance with
                  Sections 3.4-3.7; and

                  (iii) an amount equal to the value of the Leasehold Interests
                  with respect to which preferential purchase rights have been
                  exercised prior to Closing in accordance with Section 3.9.

         2.3 PAYMENT AND CALCULATION OF ESTIMATED ADJUSTED PURCHASE PRICE;
PAYMENT AT CLOSING.

         (a) ARCO shall prepare and deliver to Purchaser, at least three
         "Business Days" (which term shall mean any day except a Saturday,
         Sunday or other day on which commercial banks in New York, New York, or
         Dallas, Texas are required or authorized by law to be closed) prior to
         the Closing Date, ARCO's estimate of the Adjusted Purchase Price to be
         paid at Closing, together with a statement setting forth ARCO's
         estimate of the amount of each adjustment to the Purchase Price to be
         made pursuant to Section 2.2. The parties shall negotiate in good faith
         and attempt to agree on such estimated adjustments prior to Closing. In
         the event any estimated adjustment amounts are not agreed upon prior to
         Closing, the estimate of the Adjusted Purchase Price for purposes of
         Closing shall be calculated based on ARCO's and Purchaser's agreed upon
         estimated adjustments.

         (b) At Closing, Purchaser shall pay to ARCO the estimated Adjusted
         Purchase Price determined as set forth in Section 2.3(a) (such
         estimated Adjusted Purchase Price being herein referred to as the
         "Estimated Adjusted Purchase Price"), less an amount equal to the
         Deposit.

         2.4 POST-CLOSING ADJUSTMENT. Within five Business Days after the final
determination of the Adjusted Purchase Price in accordance with Section 11.1 or
otherwise, Purchaser shall pay to ARCO or ARCO shall pay to Purchaser, as the
case may be, the amount by which such final Adjusted Purchase Price is greater
than or less than, respectively, the Estimated Adjusted Purchase Price.

         2.5 ALLOCATION OF PURCHASE PRICE. ARCO and Purchaser agree to the
following allocation of the Purchase Price among the Assets sold hereunder based
upon the estimated value for federal income tax purposes of the Assets as of the
Closing Date:

<TABLE>
<S>                                                                  <C>
             Interests relating to leasehold other than
             tangible equipment and facilities (Leasehold)               70%

             Interests relating to tangible equipment
             and facilities (Tangibles)                                  30%
                                                                        ---
                       Total Allocation                                 100%
</TABLE>

Any adjustments to the Purchase Price under Section 2.2 shall ratably adjust the
allocation to Leasehold and Tangibles.

                            ARTICLE 3 - TITLE MATTERS

         3.1 ACCESS TO ASSETS AND ARCO EMPLOYEES. Prior to the Closing Date,
ARCO shall grant Purchaser access during ARCO's normal business hours (by
appointment only) to the Assets (including all Records) and the employees of
ARCO. The Records shall be made available at their present location.

         3.2 DEFINITION OF MARKETABLE TITLE. As used herein, the term
"Marketable Title" shall mean, in the case of the Leasehold Interests listed on
Exhibit A and other Assets to which an Allocated Value is assigned on Exhibit
3.6 (each such identified other Asset being herein referred to as a "Valued
Asset"), such right, title and interest (owned beneficially or of record) that,
except for Permitted Encumbrances:

         (a) is free from reasonable doubt to the end that a prudent person
         engaged in the business of purchasing and owning, developing and
         operating producing oil and gas properties with knowledge of all of the
         facts and their legal bearing would be willing to accept the same;

         (b) entitles ARCO to receive not less than the interest set forth in
         Exhibit A as the "Net Revenue Interest" or "NRI" with respect to all of
         the oil, gas, and hydrocarbon minerals produced, saved and marketed
         from each unit or well, as the case may be, that relates to ARCO's
         producing interval in the lands and depths included within each
         property identified on Exhibit A under the column entitled "Property
         Name" (each such identified property being herein referred to as a
         "Property");

         (c) obligates ARCO to pay costs and expenses relating to the operations
         on and the maintenance and development of each unit or well, as the
         case may be, that relates to ARCO's

Purchase and Sale Agreement          Page 6

<PAGE>   7

         producing interval in the lands and depths included within each
         Property, in an amount not greater than the "Working Interest" or "WI"
         set forth in Exhibit A with respect to such Property; and

         (d) is free and clear of any mortgages, liens, encumbrances or consent
         requirements;

provided, however, that with respect to clauses (b) and (c) above ARCO's title
shall nevertheless be deemed to constitute "Marketable Title" if (i) the
difference between ARCO's actual interest and the interest set forth in Exhibit
A for each unit or well included within an individual Property is 1% or less
than the interest set forth in Exhibit A (by way of example, and without
limiting the generality of the foregoing, if the Net Revenue Interest shown in
Exhibit A for each unit or well included within a Property is 88%, ARCO will
have Marketable Title to such Leasehold Interest if it is entitled to receive
not less than 87.12% of all oil and gas produced from such Property) or (ii) the
value of any difference between ARCO's actual interest in the interest set forth
in Exhibit A (as such value is determined in accordance with Section 3.6) is
less than $10,000.00.

         3.3 DEFINITION OF PERMITTED ENCUMBRANCES.  As used herein, the term
"Permitted Encumbrances" shall mean:

         (a) Lessors' royalties, overriding royalties, reversionary interests
         and similar burdens affecting a Leasehold Interest if the net
         cumulative effect of such burdens does not operate to reduce the
         interest of ARCO with respect to all oil and gas produced from any
         units or wells below the "Net Revenue Interest" or "NRI" set forth in
         Exhibit A for the Property to which such units or wells relate;

         (b) Division orders and sales contracts terminable without penalty upon
         no more than 90 days notice to the purchaser;

         (c) Preferential rights to purchase and required third-party consents
         to assignments and similar agreements with respect to which waivers or
         consents are obtained from the appropriate parties or the appropriate
         time period for asserting the rights has expired without an exercise of
         such rights;

         (d) Materialman's, mechanic's, repairman's, employee's, contractor's,
         operator's, tax, and other similar liens or charges arising in the
         ordinary course of business for obligations that are not delinquent or
         that will be paid and discharged in the ordinary course of business or
         if delinquent, that are being contested in good faith by appropriate
         action;

         (e) All rights to consent by, required notices to, filings with, or
         other actions by governmental or tribal entities in connection with the
         sale or conveyance of oil and gas leases or interests therein;

         (f) Conventional rights of reassignment requiring notice to the
         holders of such rights;

         (g) Easements, rights-of-way, servitudes, permits, surface leases and
         other rights of third parties in respect of surface operations which
         individually or in the aggregate do not materially interfere with the
         operation, value or use of the Leasehold Interests (or portions
         thereof) affected thereby;

         (h) All other liens, charges, encumbrances, contracts, agreements,
         instruments, obligations, defects and irregularities affecting the
         Leasehold Interests or the units or wells to which they relate that
         individually or in the aggregate:

                  (i)  are not such as to interfere materially with the
                  operation, value or use of the Leasehold Interests (or
                  portion thereof) affected thereby,

                  (ii) do not unreasonably delay the receipt or materially
                  prevent Purchaser from receiving the proceeds of production
                  from any of the units or wells to which the Leasehold
                  Interests relate,

                  (iii) do not materially reduce the interest of ARCO with
                  respect to all oil and gas produced from any unit or well to
                  which the Leasehold Interests relate below the "Net Revenue
                  Interest" or "NRI" set forth in Exhibit A for the Property to
                  which such unit or well relates, and

                  (iv) do not materially increase ARCO's portion of the costs
                  and expenses relating to the operations on and the maintenance
                  and development of the lands and depths included in any unit
                  or well to which the Leasehold Interests relate above the
                  "Working Interest" or "WI" set forth in Exhibit A for the
                  Property to which such unit or well relates;

         (i) All rights reserved to or vested in any municipality or
         governmental, statutory or public authority to control or regulate any
         of the Leasehold Interests in any manner, and all applicable laws,
         rules and orders of any such authority;

Purchase and Sale Agreement          Page 7

<PAGE>   8

         (j) Any Title Defects Purchaser may have expressly waived in writing or
         which are deemed to have been waived under Section 3.4 or any other
         matters that are included in the adjustments to the Purchase Price
         pursuant to Section 2.2;

         (k) The terms and provisions of all operating agreements, unit
         agreements, unit operating agreements, pooling agreements and pooling
         designations affecting the Leasehold Interests which are specifically
         listed on Exhibit A; and

         (l) The terms and conditions of all leases, agreements, orders,
         instruments and documents expressly described in or referred to in
         Exhibit A.;

         (m) The terms and conditions of all agreements with King Cad Plus for
         month-to-month rental of office space and/or drafting services in-lieu
         of rental of office space within the ARCO Longview Production Office
         and which shall be terminated by ARCO on or before April 1, 1999;

         (n) Corporate mergers between Atlantic Richfield Company, a Delaware
         corporation, and predecessor corporations, including, but not limited
         to, Atlantic Richfield Company, a Pennsylvania corporation, Hondo Oil &
         Gas Company, a New Mexico corporation, Sinclair Oil & Gas Corporation,
         a Maine corporation, Sinclair Corporation, Richfield Oil Corporation,
         and Houston Oil and Gas Company, even though Certificates of Corporate
         Merger or other evidence of such corporate merger or mergers are not
         recorded in the applicable county records wherein the Assets involved
         may be located; provided, however, that upon request, ARCO is able to
         provide Purchaser with photocopies of the Certificates of Corporate
         Merger filed with the Secretary of State of the state or states of
         incorporation of the merging corporation.; and

         (o) Production payments wherein ARCO or a predecessor corporation of
         ARCO is named as obligor/payor and where the principal amount of
         initial indebtedness is less than $5,000,000.00 and where the effective
         date of the production payment obligation is on or before January 1,
         1972 (any such production payment referred to hereafter as an
         "Unreleased Production Payment"), even though a release of all
         obligations of ARCO or ARCO's predecessor in interest has not been
         filed in the county records wherein the Assets involved are located,
         unless Purchaser can demonstrate to ARCO by the presentation of
         business records, financial records or check stubs created and issued
         within one year of Closing that any such production payment is still
         being carried in an active status and all obligations of ARCO or ARCO's
         predecessor thereunder have not been completely satisfied.
         Notwithstanding anything to the contrary contained herein, ARCO does
         hereby agree to indemnify and hold harmless Purchaser and its
         affiliated parties from and against any and all claims, liabilities,
         losses, costs and expenses (including court costs and reasonable
         attorneys' fees) in related to or arising from an Unreleased Production
         Payment, for as long as Purchaser or its affiliated parties own the
         Assets affected by the Unreleased Production Payment. ARCO's obligation
         to indemnify Purchaser under this Section 3.3(o) is unique and
         personal, and as such is non-assignable and non-transferable. Further,
         ARCO's indemnity to Purchaser under this Section 3.3(o) shall be
         limited to the lesser of the Allocated Value for the affected Asset as
         shown on Exhibit 3.6 attached hereto, or the mutually agreed upon fair
         market value of the Asset at the time the Unreleased Production Payment
         is brought to ARCO's attention by Purchaser or its affiliated party,
         but in either case ARCO's indemnity shall apply only to values in
         excess of $5,000.00.

         3.4 NOTICE OF TITLE DEFECT. Purchaser shall notify ARCO in writing, as
soon as reasonably practicable after Purchaser has knowledge thereof, and in any
event on or before five (5) days prior to the Closing Date (the "Notification
Deadline"), of any matter ("Title Defect") that would cause ARCO's title to any
of the Properties or Valued Assets not to be Marketable Title, in each case
together with a detailed explanation of (a) the nature of such Title Defect, (b)
the Leasehold Interests or Valued Assets (or portions thereof) affected thereby
and (c) Purchaser's proposed Defect Value (as hereinafter defined) for such
Title Defect in a form similar to Exhibit 3.4. Any matters that would otherwise
constitute Title Defects but which are not specifically raised in writing (with
the detailed explanation as contemplated in the immediately preceding sentence)
by Purchaser prior to the Notification Deadline shall conclusively be deemed
waived by Purchaser. As used herein, the term "Defect Value" shall mean with
respect to each Title Defect, the reduction in the "Allocated Value" of the
affected Leasehold Interest or other Valued Asset as a result of such Title
Defect, as determined pursuant to Sections 3.6 and 3.7.

         3.5 REMEDIES FOR TITLE DEFECTS.

         (a) ARCO shall have the right, but not the obligation, to attempt to
         cure any Title Defect with respect to which it has received notice from
         Purchaser prior to the Notification Deadline.

         (b) With respect to any Title Defect for which ARCO receives the
         required notice from Purchaser on or before the Notification Deadline,
         ARCO and Purchaser shall attempt to agree, subject to the terms of the
         last sentence of this Section 3.5(b), upon a mutually acceptable remedy
         from among the following options:

                  (i) For ARCO to indemnify Purchaser against all liability,
                  loss, cost and expense resulting from such Title Defect, in
                  which event the Purchase Price shall not be reduced and the
                  Leasehold Interest or other Valued Asset subject to such Title
                  Defect shall be sold to Purchaser hereunder (it being
                  understood and agreed, however, that in no event shall ARCO's
                  liability under any such indemnity exceed the Defect Value of
                  the Title

Purchase and Sale Agreement          Page 8

<PAGE>   9

                  Defect to which such indemnity relates or survive beyond the
                  period provided in Section 17.13);

                  (ii) To exclude the Leasehold Interest or other Valued Asset
                  subject to the Title Defect from the sale hereunder, in which
                  event the Purchase Price shall be reduced by the Allocated
                  Value (as defined in Section 3.6) of such Leasehold Interest
                  or other Valued Asset; or

                  (iii) The Leasehold Interest or other Valued Asset subject to
                  such Title Defect shall be sold to Purchaser hereunder and the
                  Purchase Price shall be reduced by the Defect Value for such
                  Title Defect.

         In the event ARCO and Purchaser are unable to agree upon one of the
         foregoing options on or before the Closing Date then, unless the Title
         Defect is waived in writing by Purchaser, either party shall have the
         right to submit the disputed item(s) for binding arbitration in
         accordance with Article 3.11. The Asset(s) subject to title defect
         resolution dispute shall be sold to Purchaser at Closing and no
         Purchase Price adjustment, indemnification by ARCO or reassignment to
         ARCO shall be made until warranted by agreement of the Parties or
         arbitration. THERE SHALL BE NO REDUCTION IN THE PURCHASE PRICE FOR
         TITLE DEFECTS PURSUANT TO THE TERMS OF THIS SECTION 3.5(b), AND ARCO
         SHALL NOT BE LIABLE FOR ANY INDEMNITY GRANTED PURSUANT TO THIS SECTION
         3.5(b), UNLESS AND UNTIL, AND ONLY TO THE EXTENT THAT, THE AGGREGATE OF
         ALL SUCH AMOUNTS EXCEEDS $50,000.00

         (c) To the extent that same are discovered by either party prior to the
         Notification Deadline, ARCO and Purchaser acknowledge and agree that
         the Purchase Price shall be increased (a "Title Increase") by an amount
         equal to the value allocated to the following:

                  (i) any increase in ARCO's Net Revenue Interest shown on
                  Exhibit A for a Property without a corresponding increase (in
                  each case to the extent greater than 1% of the interest shown
                  on Exhibit A) in ARCO's Working Interest above that shown on
                  Exhibit A for such Property; or

                  (ii) any decrease in ARCO's Working Interest below that shown
                  on Exhibit A for any Property without a corresponding decrease
                  (in each case to the extent greater than 1% of the interest
                  shown on Exhibit A) in the Net Revenue Interest shown on
                  Exhibit A for such Property,

                  in each case with such values to be agreed upon by ARCO and
                  Purchaser (taking into account the Allocated Value for such
                  Property) or otherwise determined pursuant to the procedures
                  set forth in Section 3.7. THERE SHALL BE NO INCREASE IN THE
                  PURCHASE PRICE FOR TITLE INCREASES PURSUANT TO THE TERMS OF
                  THIS SECTION 3.5 UNLESS AND UNTIL, AND ONLY TO THE EXTENT
                  THAT, THE AGGREGATE OF ALL SUCH AMOUNTS EXCEEDS $50,000.00.

         (d) Notwithstanding anything to the contrary contained in this
         Agreement,

                  (i) the existence of a Title Defect shall not result in
                  Purchaser having any right to exclude any Leasehold Interest
                  from the sale hereunder or to fail to perform its obligations
                  at Closing, and

                  (ii) there shall be no adjustment to the Purchase Price as a
                  result of ARCO's title to any of the Assets other than the
                  Leasehold Interests and other Valued Assets.

         3.6 VALUE OF LEASEHOLD INTEREST OR TITLE DEFECT. As used herein, the
term "Allocated Value" shall mean, with respect to any Valued Asset, Property,
or any unit or well relating thereto, the amount set forth under the column
entitled "Allocated Value" for such Property, unit or well on Exhibit 3.6 (which
Exhibit 3.6 includes an Allocated Value for and list of all Leasehold Interests
that have been identified prior to the date hereof as being subject to a
preferential purchase right) or if no separate amount is set forth in Exhibit
3.6, the amount agreed upon by ARCO and Purchaser as the value of such Leasehold
Interest, unit or well. If ARCO does not agree with Purchaser's proposed Defect
Value or the parties are unable to agree upon whether a Title Defect exists, the
Allocated Value of a Leasehold Interest or the value allocated to a Title
Increase, in each case for purposes of Section 3.5, then the parties shall enter
into good faith negotiations and shall attempt to agree on such matter, and any
values to be agreed upon shall be based on the Allocated Value for the group of
properties with which such Leasehold Interest, unit or well appears on Exhibit
3.6.

         3.7 DETERMINATION OF VALUES BY CONSULTANT. Subject to ARCO's right to
elect to indemnify Purchaser pursuant to Section 3.5(b)(i), if ARCO and
Purchaser cannot reach agreement on the existence of a Title Defect, the
Allocated Value of a Leasehold Interest, the Defect Value for a Title Defect or
the value allocated to any Title Increases, in any such case within 10 days
after the commencement of good faith negotiations pursuant to Section 3.6, at
either party's option, upon notice to the other party, such Allocated Value,
Defect Value or amount allocated to a Title Increase, as applicable, shall be
determined by an independent petroleum reservoir consultant chosen by lot from
among the following firms: DeGolyer & MacNaughton, Keplinger and Associates,
Inc. and Gruy and Associates, Inc. Such consulting firm shall have the right to
hire such additional neutral consultants and experts as it deems reasonably
appropriate. The consultant chosen for the first applicable valuation hereunder
shall serve for all

Purchase and Sale Agreement          Page 9

<PAGE>   10

valuations hereunder; provided, however, that if at any time any consultant so
chosen fails or refuses to perform hereunder, a new consultant shall be chosen
in a similar manner from among the remaining firms. The cost of any consultant
shall be borne one-half by ARCO and one-half by Purchaser. Each party shall
present its position on the value in question to the consultant within five days
after the consultant is requested to determine the value, and the consultant
shall make a determination of the value involved as soon as practicable
thereafter. The determination by the consultant shall be conclusive and binding
on the parties, and shall be enforceable against any party in any court of
competent jurisdiction.

         3.8 NOTICES TO HOLDERS OF PREFERENTIAL PURCHASE RIGHTS. With respect to
each party shown in ARCO's records as holding a preferential purchase right
covering the Leasehold Interests (a preliminary list of such affected Leasehold
Interests is set forth in Exhibit 3.6), ARCO shall send to the holder of such
right a notice offering to sell to such holder, in accordance with the
contractual provisions applicable to such right, those Leasehold Interests
covered by such right on the terms hereof and for the same Allocated Value of
such Leasehold Interests (as set forth on Exhibit 3.6), subject to adjustments
in price in the same manner that the Purchase Price is adjusted pursuant to
Article 2 of this Agreement.

         3.9 EXERCISE OF PREFERENTIAL PURCHASE RIGHTS. If, prior to Closing, any
holder of a preferential purchase right notifies ARCO that it intends to
consummate the purchase of the Leasehold Interests to which its preferential
purchase right applies, then those Leasehold Interests shall be excluded from
the Assets to be conveyed to Purchaser under this Agreement, and the Purchase
Price shall be reduced by the Allocated Value of such Leasehold Interests;
provided, however, that if the holder of such preferential right fails to
consummate the purchase of the Leasehold Interests covered by such right, then
within 90 days following the Closing Date, ARCO may so notify Purchaser, and
within 15 days after Purchaser's receipt of such notice from ARCO, ARCO shall
sell to Purchaser, and Purchaser shall purchase from ARCO, for a price equal to
the Allocated Value of such Leasehold Interests (as adjusted pursuant to the
provisions of Section 2.2 above) and upon the other terms of this Agreement (to
the extent applicable), the Leasehold Interests to which the preferential
purchase right applied. All Leasehold Interests, other than those for which ARCO
has received notice of the exercise of a preferential purchase right, subject to
the other provisions of the Agreement, shall be sold to Purchaser at the Closing
pursuant to the provisions of this Agreement.

         3.10 RISK OF LOSS. Subject to the provisions of Section 9.7, no
adjustment to the Purchase Price shall be made if, after the date hereof and
prior to the Closing any part of the Assets shall be destroyed or harmed by fire
or any other cause or shall be taken by condemnation or the exercise of eminent
domain, but Purchaser shall be entitled to any applicable insurance proceeds (to
the extent actually received by ARCO and not payable from a captive insurance
carrier or subject to reimbursement or repayment by ARCO or its affiliates) or
condemnation awards.

         3.11 ARBITRATION PROCEDURE. If any matter is required by this Article 3
to be arbitrated, such arbitration shall be conducted as set forth in this
Section 3.11.

         (a) The parties shall jointly select a mutually acceptable person as
         the sole arbitrator under this Agreement. If the parties are unable to
         agree upon the designation of a person as arbitrator, then either ARCO
         or Purchaser, or all of such parties, may in writing request the
         American Arbitration Association ("AAA") to appoint a qualified
         arbitrator.

         (b) Any arbitration hearing shall be held at a place in Houston, Texas
         acceptable to the arbitrator.

         (c) The arbitrator shall settle disputes regarding existence and value
         of Title Defects and ARCO's attempts to correct any Title Defects in
         accordance with the Texas General Arbitration Act (Chapter 171, Texas
         Civil Practice and Remedies Code) and the Commercial Arbitration Rules
         of the AAA, to the extent such rules do not conflict with the terms of
         such act and the terms hereof. Such arbitrator shall hear all
         arbitration matters arising under this Article 3. The decision of the
         arbitrator shall be binding upon the parties, and may be enforced in
         any court of competent jurisdiction. ARCO and Purchaser, respectively,
         shall bear their own legal fees and other costs incurred in presenting
         their respective cases. The charges and expenses of the arbitrator
         shall be shared equally by ARCO and Purchaser.

         (d) The arbitration shall commence within thirty (30) days after the
         arbitrator is selected as set forth in Section 3.11(a) above. In
         fulfilling his or her duties hereunder, the arbitrator shall be bound
         by the terms of this Agreement, may consider such other matters as in
         the opinion of the arbitrator are necessary or helpful to make a proper
         evaluation and may consult with and engage disinterested third parties,
         including, without limitation, petroleum engineers, attorneys and
         consultants, to advise the arbitrator.

         (e) If any arbitrator selected hereunder (whether selected by ARCO and
         Purchaser, or by the AAA) should die, resign or be unable to perform
         his duties hereunder, the parties or the AAA who selected such
         arbitrator, as the case may be, shall select a replacement arbitrator.
         The aforesaid procedure shall be followed from time to time as
         necessary.

               ARTICLE 4 - REPRESENTATIONS AND WARRANTIES OF ARCO

         ARCO represents and warrants to Purchaser that:

         4.1 EXISTENCE. ARCO is a corporation duly organized, validly existing
and in good standing under the laws of the State of Delaware and is duly
qualified to carry on its business in the states where the Assets are located.

Purchase and Sale Agreement          Page 10

<PAGE>   11

         4.2 POWER. ARCO has the corporate power and authority to enter into and
perform this Agreement and the transactions contemplated hereby. Subject to
preferential purchase rights and restrictions on assignment of the type
generally found in the oil and gas industry (which shall include any matter that
would constitute a Title Defect under Article 3 hereof), and to rights to
consent by, required notices to, and filings with or other actions by
governmental or tribal entities, the execution, delivery and performance of this
Agreement by ARCO, and the transactions contemplated hereby, will not violate
(a) any provision of the certificate of incorporation or bylaws of ARCO, (b) any
material agreement or instrument to which ARCO is a party or by which ARCO or
any of the Leasehold Interests are bound, (c) any judgment, order, ruling, or
decree applicable to ARCO as a party in interest, or (d) any law, rule or
regulation applicable to ARCO.

         4.3 AUTHORIZATION. The execution, delivery and performance of this
Agreement and the transactions contemplated hereby have been duly and validly
authorized by all requisite corporate action on the part of ARCO. This Agreement
has been duly executed and delivered on behalf of ARCO, and at Closing all
documents and instruments required hereunder to be executed and delivered by
ARCO shall have been duly executed and delivered. This Agreement does, and such
documents and instruments shall, constitute legal, valid and binding obligations
of ARCO enforceable in accordance with their terms, subject, however, to the
effect of bankruptcy, insolvency, reorganization, moratorium and similar laws
from time to time in effect relating to the rights and remedies of creditors, as
well as to general principles of equity (regardless of whether such
enforceability is considered in a proceeding in equity or at law).

         4.4 BROKERS. ARCO has incurred no obligation or liability, contingent
or otherwise, for brokers' or finders' fees in respect of the matters provided
for in this Agreement that will be the responsibility of Purchaser; and any such
obligation or liability that might exist shall be the sole obligation of ARCO.

         4.5 FOREIGN PERSON. ARCO is not a "foreign person" within the meaning
of the Internal Revenue Code of 1986, as amended, (hereinafter called the
"Code"), Section 1445 and 7701 (i.e. ARCO is not a nonresident alien, foreign
corporation, foreign partnership, foreign trust or foreign estate as those terms
are defined in the Code and any regulations promulgated thereunder).

         4.6 DEFAULTS. To the best of ARCO's knowledge, ARCO is not in default
under and no condition exists that with notice or lapse of time or both would
constitute a default under (i) any mortgage, indenture, loan, credit agreement
or other agreement or instrument evidencing indebtedness for borrowed money to
which any of the Assets are subject, or any other agreement, contract lease,
license or other instrument, (ii) any order, judgment or decree of any court,
commission, board, agency or other governmental body, or (iii) any law, statute,
ordinance, decree, order, rule or regulation of any governmental authority.

         4.7 CHANGES IN LAST YEAR. To the best of ARCO's knowledge and except as
provided for or disclosed in Exhibit "4.7" hereto, during the one (1) year
period immediately prior to the date of this Agreement, there has not been:

         (a) Any material damage, destruction or loss to or of the Assets to be
         sold to Purchaser, whether or not covered by insurance;

         (b) Any sale, lease or other disposition of the Assets by ARCO, except
         as permitted by the terms of this Agreement;

         (c) Any mortgage, pledge or grant of a lien or security interest in
         any of the Assets by ARCO, except any such encumbrance that will be
         released at or before the Closing; or

         (d) Any contract or commitment by ARCO to do any of the foregoing.

         4.8 MATERIAL AGREEMENTS. To the best of ARCO's knowledge, (I) Exhibit
"A" hereto sets forth a listing of all material contracts, agreements, plans,
commitments and other burdens and documents affecting the Assets (the "Material
Agreements"), (ii) all of such Material Agreements are in full force and effect
and are the valid and legally binding obligations of the parties thereto, (iii)
ARCO is not in breach or default with respect to any material obligations
pursuant to any Material Agreement; (iv) no other party to any Material
Agreement (or any successor in interest thereto) is in breach or default with
respect to any of its material obligations thereunder; (v) ARCO has not given
nor received notice of any action to terminate, cancel, rescind or procure a
judicial reformation of any Material Agreement; and (vi) the listing of the
Material Agreements on Exhibit "A" includes, without limitation, the following:

         (a) Any contract, commitment or agreement that involves aggregate
         expenditures by ARCO with respect to the Assets of more than
         $10,000.00 per year;

         (b) Any indenture, trust agreement, loan agreement or note under which
         ARCO has outstanding indebtedness, obligations or liabilities for
         borrowed money and which is secured by a lien, security interest or
         other encumbrance on the Assets;

         (c) Any lease, sublease, installment purchase or similar arrangement
         for the use or occupancy of real property that involves aggregate
         expenditures by ARCO of more than $10,000.00 per year, together with a
         list of the location of such leased property, the date

Purchase and Sale Agreement          Page 11

<PAGE>   12

         of termination of such arrangements, the name of the other party and
         the annual rental payments required to be made for such arrangements;

         (d) Any guaranty, direct or indirect, by any affiliate of ARCO of any
         contract, lease or agreement entered into by ARCO with respect to the
         ownership or operation of the Assets;

         (e) Any agreement of surety, guarantee or indemnification by ARCO with
         respect to the ownership or operation of the Assets;

         (f) All contacts for the sale and purchase of hydrocarbons produced
         from the Assets and agreements for the transportation of hydrocarbons
         affecting the Assets; and

         (g) All farmout, farmin, dry hole, bottom hole, acreage contribution,
         purchase and acquisition agreements, area of mutual interest
         agreements, salt water disposal agreements, processing agreements,
         plant/facilities agreements, servicing contracts, easement and/or
         right-of-way agreements, operating agreements, unitization or pooling
         agreements and all other executory contracts and agreements relating
         to the Assets.

         4.9 DEFECTS. To the best of ARCO's knowledge and except as provided for
or disclosed in Exhibit 4.9, there are no material defects in the Assets to be
conveyed to Purchaser pursuant to the terms hereof which would prevent the
continued operation of the Assets in accordance with prior practice.

         4.10 TAXES. To the best of ARCO's knowledge, all ad valorem, property,
production, severance and similar taxes and assessments based on or measured by
the ownership of property or the production of hydrocarbons or the receipt of
proceeds therefrom with respect to the Assets which are currently due have been
properly and timely paid.

         4.11 COMPLIANCE WITH LAWS. To the best of ARCO's knowledge, all
material valid laws, regulations and orders of all governmental agencies having
jurisdiction over the Assets have been and shall continue to be complied with
until the Closing, all material necessary permits from and reports to
governmental agencies having jurisdiction in connection with the Assets have
been obtained and have been timely, properly and accurately made and will
continue to be timely, properly and accurately made through Closing, and all
plugged wells located on the Assets have been properly plugged.

         4.12 OPTIONS AND CALLS. To the best of ARCO's knowledge, except as
specifically disclosed on Exhibit "A" hereto, none of the Assets is subject to
any options, calls or preferential rights to purchase production or similar
rights that would adversely and materially affect the value of the Assets or the
price Purchaser is able to obtain form the sale of production from the Assets
after the Effective Date.

         4.13 LITIGATION. To the best of ARCO's knowledge and except as may be
set forth in Exhibit 9.6 hereto, on the date hereof no suit, action or other
proceeding is pending before any court or governmental agency to which ARCO is a
party and which might result in impairment or loss of ARCO's title to any part
of the Assets or that might hinder or impede operation of the Assets and, to the
knowledge of ARCO, no such suit, action or other proceeding is threatened. ARCO
shall promptly notify Purchaser of any such proceeding which comes to ARCO's
attention after the date of this Agreement.

         4.14 LEASE MAINTENANCE. To the best of ARCO's knowledge (1) all
material royalties (other than royalties in suspense), rentals and other
payments due under the Leasehold Interests have been properly and timely paid,
(ii) all conditions necessary to keep such Leasehold Interests in force have
been fully performed, (iii) no notices have been received by ARCO of any claim
to the contrary, and (iv) all of such Leasehold Interests are in full force and
effect.

         4.15 GAS PRODUCTION AND IMBALANCES. To the best of ARCO's knowledge and
except as disclosed in Exhibit 2.2, ARCO has not produced a share of gas with
respect to the Assets greater than its ownership percentage and ARCO is under no
obligation to reduce its share of production under any gas balancing agreement
or similar arrangement to allow under-produced parties to come back into
balance. Except as disclosed in Exhibit 2.2, ARCO is receiving on a current
basis the payments required under the terms of any gas contracts applicable to
the Assets, and no purchaser of natural gas under any gas contracts has (i)
materially curtailed (other than seasonal curtailment) its takes of natural gas,
or (ii) given notice (either written or verbal) that it desires to amend any gas
contracts with respect to price of quantity of deliveries to such an extent that
any such action would materially affect the economic value of the reserves
attributable to the Assets affected by such action.

         4.16 PENDING AND PROPOSED OPERATIONS AND CAPITAL PROJECTS. Exhibit 4.16
is a list and description of all wells currently being drilled, reworked,
recompleted or on which other operations are being conducted or have been
formally proposed and the associated costs or estimates thereof, and of all
other capital projects, proposed or pending with respect to the Assets and the
associated costs or estimates thereof, and all other authorities for expenditure
received or given by ARCO with respect to the Assets for which the work therein
described was not fully completed prior to the Effective Date, regardless of
whether ARCO has approved, disapproved or not yet responded to any such
authority for expenditure, to the extent, in each case, that such costs,
estimates or authorities for expenditure exceed $50,000.00 per well or project,
net to ARCO's interest.

Purchase and Sale Agreement          Page 12


<PAGE>   13

             ARTICLE 5 - REPRESENTATIONS AND WARRANTIES OF PURCHASER

         Purchaser represents and warrants to ARCO that:

         5.1 EXISTENCE. Purchaser is a limited partnership duly organized,
validly existing, and in good standing under the laws of the State of Texas, and
is duly qualified to carry on its business in the states where the Assets are
located.

         5.2 POWER. Purchaser has the partnership power and authority to enter
into and perform this Agreement and the transactions contemplated hereby.
Subject to rights to consent by, required notices to, and filings with or other
actions by governmental entities, the execution, delivery and performance of
this Agreement by Purchaser, and the transactions contemplated hereby, will not
violate (a) any provision of the partnership agreement or bylaws of Purchaser,
(b) any material agreement or instrument to which Purchaser is a party or by
which Purchaser is bound, (c) any judgment, order, ruling, or decree applicable
to Purchaser as a party in interest, or (d) any law, rule or regulation
applicable to Purchaser.

         5.3 AUTHORIZATION. The execution, delivery and performance of this
Agreement and the transactions contemplated hereby have been duly and validly
authorized by all requisite partnership action on the part of Purchaser. This
Agreement has been duly executed and delivered on behalf of Purchaser, and at
Closing all documents and instruments required hereunder to be executed and
delivered by Purchaser shall have been duly executed and delivered. This
Agreement does, and such documents and instruments shall, constitute legal,
valid and binding obligations of Purchaser enforceable in accordance with their
terms, subject, however, to the effect of bankruptcy, insolvency,
reorganization, moratorium and similar laws from time to time in effect relating
to the rights and remedies of creditors, as well as to general principles of
equity (regardless of whether such enforceability is considered in a proceeding
in equity or at law).

         5.4 BROKERS. Purchaser has incurred no obligation or liability,
contingent or otherwise, for brokers' or finders' fees in respect of the matters
provided for in this Agreement which will be the responsibility of ARCO; and any
such obligation or liability that might exist shall be the sole obligation of
Purchaser.

         5.5 FURTHER DISTRIBUTION. Purchaser is not acquiring the Leasehold
Interests with a view to, or for offer of resale in connection with, a
non-exempt distribution thereof within the meaning of the Securities Act of
1933, as amended, and the rules and regulations pertaining to it or a
distribution thereof in violation of any applicable Securities laws. Purchaser
covenants that if in the future it should decide to dispose of any of its
interest in the Assets, subject to any restriction on assignment set forth
herein or in the Assignment and Bill of Sale delivered by ARCO to Purchaser at
Closing, Purchaser will do so only in compliance with any applicable Federal and
State Securities laws.

                   ARTICLE 6 - PRE-CLOSING OBLIGATIONS OF ARCO

         6.1 OPERATIONS. From the date of this Agreement until Closing (the
"Interim Period"), except as otherwise approved by Purchaser (which approval
shall not be unreasonably withheld), ARCO (a) shall permit Purchaser to have
access to those Assets operated by ARCO and shall use reasonable efforts to
provide Purchaser access to those Assets not operated by ARCO, (b) shall operate
the Assets for which it is the operator in a good and workmanlike manner and in
accordance with past practices, (c) shall not transfer, sell, hypothecate,
encumber or otherwise dispose of any of the Assets (other than in the ordinary
course of business or as required in connection with the exercise by third
parties of preferential rights to purchase any of the Assets, or as required in
the administration of existing agreements pertaining to any of the Assets), (d)
shall maintain all insurance coverages now in force with respect to the Assets,
(e) shall pay or cause to be paid prior to delinquency all costs and expenses in
connection with the ownership and operation of the Assets, (f) shall keep the
Material Agreements in full force and effect and will perform and comply with
all the convenants and conditions contained therein, (g) shall not enter into
any material new agreements or commitments with respect to the Assets, and (h)
shall not modify, terminate or settle any dispute arising out of any of the
Material Agreements relating to the Assets. In the absence of Purchaser's prior
written consent (which consent shall not be unreasonably withheld), ARCO shall
not conduct or authorize any work, repair, capital investment or operation with
respect to the Assets requiring an expenditure of $50,000 or more for any single
project (except emergency operations).

         6.2 PERMISSIONS. During the Interim Period ARCO will use reasonable
efforts to obtain all permissions, approvals, and consents of federal, state and
local governmental authorities and others as may be required to consummate the
sale contemplated hereunder (excluding governmental permissions, approvals and
consents which are customarily obtained after the consummation of transactions
of the type contemplated hereunder).

                ARTICLE 7 - PRE-CLOSING OBLIGATIONS OF PURCHASER

         7.1 CONFIDENTIALITY. Purchaser shall cause (a) any information relating
to the terms of the transactions contemplated hereunder, (b) the information and
data furnished or made available by ARCO to Purchaser and its officers,
employees, and representatives in connection with this Agreement or Purchaser's
investigation of the Assets and (c) any information relating to Title Defects
for which ARCO has agreed to indemnify Purchaser pursuant to Section 3.5, in
each case to be maintained in confidence

Purchase and Sale Agreement          Page 13

<PAGE>   14

and not to be used for any purpose other than in connection with this Agreement
or Purchaser's investigation of the Assets; provided, however, that solely with
respect to information of the type described in clauses (a) and (b) preceding,
the foregoing obligation shall terminate on the earlier to occur of (i) the
Closing, (ii) such time as the information or data in question is disclosed to
Purchaser by a third party that is not obligated to ARCO to maintain same in
confidence, or (iii) such time as the information or data in question becomes
generally available to the oil and gas industry other than through the breach of
the foregoing obligation. The obligations of Purchaser under this Section 7.2
shall be in addition to, and not in lieu of, Purchaser's obligations under any
confidentiality agreements previously executed by ARCO and Purchaser that relate
to the Assets (the "Prior Confidentiality Agreements"). Notwithstanding anything
to the contrary contained in the Prior Confidentiality Agreements, Purchaser
acknowledges and agrees that the terms and provisions of the Prior
Confidentiality Agreements shall not be superseded by the provisions of this
Agreement, but shall continue in full force and effect from and after the
Closing Date.

         7.2 RETURN OF DATA. Purchaser agrees that if this Agreement is
terminated for any reason whatsoever, Purchaser shall, at ARCO's request,
promptly return to ARCO all information and data furnished by or on behalf of
ARCO to Purchaser, its officers, employees, and representatives in connection
with this Agreement or Purchaser's investigation of the Assets, and Purchaser
shall deliver to ARCO or destroy all copies, extracts or excerpts of such
information and data and all documents generated by Purchaser that contain any
portion of such information or data.

         7.3 INDEMNITY REGARDING ACCESS. Purchaser agrees to protect, indemnify,
defend and hold harmless ARCO, its directors, officers, employees, agents and
representatives (collectively, the "ARCO Indemnified Parties") from and against
any and all claims, liabilities, losses, costs and expenses (including, without
limitation, court costs and reasonable attorneys' fees) in connection with
personal injuries, including death, or property damage arising out of or
relating to the access of Purchaser, its officers, employees, and
representatives to the Assets and any information relating thereto as permitted
under this Agreement, REGARDLESS OF WHETHER SUCH INJURIES, DEATH OR DAMAGES ARE
CAUSED IN WHOLE OR PART BY THE SOLE, PARTIAL, CONCURRENT OR OTHER NEGLIGENCE,
GROSS NEGLIGENCE, STRICT LIABILITY, WILLFUL MISCONDUCT OR OTHER FAULT OF THE
ARCO INDEMNIFIED PARTIES. IT IS THE EXPRESSED INTENTION OF THE PARTIES HERETO
THAT THE INDEMNITY PROVIDED FOR BY THIS SECTION 7.3 CONSTITUTES AN AGREEMENT BY
PURCHASER TO INDEMNIFY AND PROTECT THE ARCO INDEMNIFIED PARTIES FROM THE
CONSEQUENCES OF THEIR OWN NEGLIGENCE, GROSS NEGLIGENCE, STRICT LIABILITY,
WILLFUL MISCONDUCT OR OTHER FAULT, REGARDLESS OF WHETHER SAME IS THE SOLE OR A
CONCURRING CAUSE OF THE INJURY, DEATH OR DAMAGE. PURCHASER FURTHER AGREES THAT
ACCESS TO CERTAIN OF THE ASSETS SHALL BE CONDITIONED UPON PURCHASER, ITS AGENTS,
EMPLOYEES, REPRESENTATIVES OR CONTRACTORS EXECUTING APPROPRIATE REQUEST FOR
ACCESS FORMS AS MAY BE REQUIRED BY ARCO.

                    ARTICLE 8 - ARCO'S CONDITIONS OF CLOSING

         ARCO's obligation to consummate the transactions provided for herein is
subject to the satisfaction or waiver on or before the Closing Date of the
following conditions:

         8.1 REPRESENTATIONS AND WARRANTIES. The representations and warranties
of Purchaser contained in Article 5 shall be true and correct in all material
respects on the date of Closing as though made on and as of that date.

         8.2 PERFORMANCE. Purchaser shall have performed in all material
respects the obligations, covenants and agreements required hereunder to be
performed by it at or prior to the Closing.

         8.3 OFFICERS CERTIFICATE. Purchaser shall have delivered to ARCO a
certificate of a corporate officer, dated the date of Closing, certifying on
behalf of Purchaser that the conditions set forth in Sections 8.1 and 8.2 have
been fulfilled.

         8.4 PENDING MATTERS. No suit, action or other proceeding by a third
party or a governmental authority shall be pending or threatened which seeks
substantial damages from ARCO in connection with, or seeks to restrain, enjoin
or otherwise prohibit, the consummation of the transactions contemplated by this
Agreement.

         8.5 OPINION OF PURCHASERS COUNSEL. Purchaser shall have delivered to
ARCO an opinion of Purchasers counsel reasonably acceptable to ARCO, dated as of
the Closing, in form and substance reasonably satisfactory to ARCO, to the
effect that:

         (a) Purchaser is a limited partnership duly organized, validly existing
         and in good standing under the laws of the State of Texas and is duly
         qualified to carry on its business in the state(s) where the Assets are
         located;

         (b) The execution, delivery and performance of this Agreement and the
         transactions contemplated hereby have been duly and validly authorized
         by all requisite corporate action on the part of Purchaser; and

Purchase and Sale Agreement          Page 14

<PAGE>   15

         (c) This Agreement and all documents and instruments executed by
         Purchaser at Closing have been duly executed and delivered on behalf of
         Purchaser and constitute legal, valid and binding obligations of
         Purchaser enforceable in accordance with their terms.

In giving such opinion, Purchaser's counsel may rely upon certificates of
governmental officials and of Purchaser's officers as to matters of fact, and
may qualify such opinion with such other assumptions and exceptions as are
reasonable under the circumstances.

         8.6 OPERATORSHIP FORMS. Purchaser shall have executed and delivered to
ARCO such forms as may be required by any governmental authority having
jurisdiction to evidence the change of operatorship from ARCO to Purchaser on
all wells constituting a part of the Assets that are operated by ARCO.

         8.7 BONDS. Purchaser shall have delivered to ARCO either: (a) copies of
any bonds, in form and substance and issued by a corporate surety satisfactory
to ARCO, covering any ARCO operated Leasehold Interests required under any laws,
rules or regulations of any federal, Indian, state or local governmental
agencies having jurisdiction over the Assets; or (b) a commitment by a surety
company, satisfactory to ARCO, to issue such bonds upon Closing.

                  ARTICLE 9 - PURCHASER'S CONDITIONS OF CLOSING

         Purchaser's obligation to consummate the transactions provided for
herein is subject to the satisfaction or waiver on or before the Closing Date of
the conditions set forth in this Article 9. Purchaser acknowledges and agrees
that notwithstanding anything contained in this Agreement to the contrary, in no
event shall Purchaser's obligation to consummate the transactions provided for
herein be subject to the condition that Purchaser receive financing with respect
to all or any part of the Purchase Price.

         9.1 REPRESENTATIONS AND WARRANTIES. The representations and warranties
of ARCO contained in Article 4 shall be true and correct in all material
respects on the date of Closing as though made on and as of that date.

         9.2 PERFORMANCE. ARCO shall have performed in all material respects the
obligations, covenants and agreements required hereunder to be performed by it
at or prior to the Closing.

         9.3 ATTORNEY-IN-FACT CERTIFICATE. ARCO shall have delivered to
Purchaser a certificate of a corporate attorney-in-fact, dated the date of
Closing, certifying on behalf of ARCO that the conditions set forth in Sections
9.1 and 9.2 have been fulfilled.

         9.4 PENDING MATTERS. No suit, action or other proceeding by a third
party or a governmental authority shall be pending or threatened which seeks
substantial damages from Purchaser in connection with, or seeks to restrain,
enjoin or otherwise prohibit, the consummation of the transactions contemplated
by this Agreement.

         9.5 OPINION OF ARCO'S COUNSEL.; ARCO shall have delivered to Purchaser
an opinion of ARCO's counsel reasonably satisfactory to Purchaser, dated as of
the Closing, in form and substance satisfactory to Purchaser, to the effect
that:

         (a) ARCO is a corporation duly organized, validly existing and in good
         standing under the laws of the State of Delaware and is duly qualified
         to carry on its business in the state(s) where the Assets are located;

         (b) The execution, delivery and performance of this Agreement and the
         transactions contemplated hereby have been duly and validly authorized
         by all requisite corporate action on the part of ARCO; and

         (c) This Agreement and all documents and instruments executed by ARCO
         at Closing have been duly executed and delivered on behalf of ARCO and
         constitute legal, valid and binding obligations of ARCO enforceable in
         accordance with their terms.

In giving such opinion, ARCO's counsel may rely upon certificates of
governmental officials and of ARCO's officers as to matters of fact, and may
qualify such opinion with such other assumptions and exceptions as are
reasonable under the circumstances.

         9.6 LITIGATION. Except as described in Exhibit 9.6, there shall be no
legal or arbitration proceeding against ARCO or directly involving the Assets,
in either case with respect to which ARCO has received service of process or
other written notice, that reasonably is expected to materially and adversely
affect the value of the Assets taken as a whole after the Effective Date.

         9.7 MATERIAL ADVERSE CHANGE. There has been no material adverse change
in the condition of the Assets, except depreciation of personal property and
equipment through ordinary wear and tear. For purposes of this Section 9.7, a
"material adverse change" is any one or more acts, omissions, occurrences or
conditions which, in the aggregate, could reasonably be expected to impair or
diminish the value of the Assets or require Purchaser to make expenditures of
funds in repair and replacement of any portion of the Assets in the amount of
$500,000 or more.

Purchase and Sale Agreement          Page 15

<PAGE>   16

         9.8 ACCURACY OF INFORMATION. The factual and historical data and
information with respect to the Assets made available to Purchaser by ARCO and
its representatives upon which Purchaser based its offer to purchase the Assets
was substantially accurate and complete, and Purchaser has not discovered any
fact or circumstance in its due diligence review of the Assets (excluding Title
Defects and environmental Conditions which are governed by Article 3 and Article
16, respectively, hereof) which, in the aggregate, could reasonably be expected
to impair or diminish the value of the Assets or require Purchaser to make
expenditures of funds in repair and replacement of any portion of the Assets in
the amount of $500,000 or more.

                              ARTICLE 10 - CLOSING

         10.1 TIME AND PLACE OF CLOSING. Subject to the conditions stated in
this Agreement, the consummation of the transactions contemplated hereby (the
"Closing") shall occur on or before August 31, 1999; provided, however, that if
all of the conditions to Closing set forth in Articles 8 and 9 have not been
satisfied or waived by such date or any extended date for Closing, the party
whose obligations are subject to the conditions that have not been satisfied or
waived shall have the right to extend the date of Closing for successive periods
of up to seven days each until such conditions shall have been satisfied or
waived. The date Closing actually occurs is herein called the "Closing Date."
The Closing shall be held at ARCO's offices located at 600 North Marienfeld,
Midland, Texas, or at such other location as may be mutually agreed upon by ARCO
and Purchaser.

         10.2 CLOSING OBLIGATIONS. At the Closing, the following events shall
occur:

         (a) ARCO shall execute, acknowledge and deliver to Purchaser the
         Conveyance, Assignment and Bill of Sale in the form of Exhibit 10.2(a)
         conveying the Assets to Purchaser;

         (b) ARCO shall provide executed change of operatorship forms to
         Purchaser and Purchaser shall execute same;

         (c) ARCO and Purchaser shall execute, acknowledge and deliver transfer
         orders or letters in lieu thereof directing all parties paying for
         production to make payment to Purchaser of proceeds attributable to
         production after the Closing Date from the Leasehold Interests;

         (d) ARCO and Purchaser shall each execute and deliver to the other a
         Property Transfer Accounting Agreement in the form of Exhibit 10.2(d);

         (e) If applicable and as provided in Section 13.2, Purchaser shall
         provide ARCO with properly executed exemption certificates or other
         documentation evidencing that the transfer of the Assets to Purchaser
         is exempt from applicable sales or similar taxes;

         (f) ARCO shall, as soon as is reasonably possible after the Closing,
         deliver to Purchaser, at ARCO's offices, the Records (it being
         understood and agreed that ARCO may retain a set of the Records and
         shall grant access to the Records to Purchaser on the same basis as
         provided in Section 3.1 until same are delivered to Purchaser);

         (g) Purchaser shall provide satisfactory evidence to ARCO of compliance
         with Sections 8.8;

         (h) Purchaser shall make the payment described in Section 2.3;

         (i) ARCO and Purchaser shall exchange the certificates described in
         Sections 8.3 and 9.3;

         (j) ARCO shall execute such other instruments and take such other
         action as may be necessary to carry out its obligations under this
         Agreement; and

         (k) Purchaser shall execute such other instruments and take such other
         action as may be necessary to carry out its obligations under this
         Agreement.

         (l) ARCO and Purchaser shall execute, acknowledge and deliver Surface
         Lease Agreement in the form attached as Exhibit 10.2(l) leasing to
         Purchaser the 24.4 acre tract of land at 1907 East Old Highway 80,
         White Oak, Texas.

                       ARTICLE 11 - ADDITIONAL AGREEMENTS

         11.1 CALCULATION OF ADJUSTED PURCHASE PRICE. Within 120 days after the
Closing, ARCO shall prepare, in accordance with this Agreement and with
generally accepted accounting principles consistently applied, and deliver to
Purchaser a statement setting forth each adjustment to the Purchase Price
required pursuant to Section 2.2 and showing the calculation of each such
adjustment. Within 30 days after receipt of such statement from ARCO, Purchaser
shall deliver to ARCO a written report containing all changes with explanations
therefor that Purchaser proposes be made to such statement, it being agreed that
Purchaser's failure to deliver such report to ARCO within such time period shall
constitute acceptance by Purchaser of ARCO's statement. From and after the
expiration of such 30-day period, no additional changes to the statement
provided by ARCO shall be considered by the parties. If Purchaser has timely
delivered such written report, the parties shall then undertake to agree on the
items

Purchase and Sale Agreement          Page 16

<PAGE>   17

in dispute and the final Adjusted Purchase Price no later than 30 days
after the receipt by ARCO of Purchaser's statement of proposed changes (it being
agreed that any disputes as to adjustments relating to Title Defects shall be
resolved prior to such time pursuant to the provisions of Article 3). Following
the final determination of the Adjusted Purchase Price pursuant to this Section
11.1, ARCO or Purchaser, as the case may be, shall make the payment required
pursuant to Section 2.4.

         11.2 SUSPENDED FUNDS. As soon as practicable after the Closing, ARCO
shall provide to Purchaser a listing showing all proceeds from production
attributable to the Leasehold Interests that are currently held in suspense and
shall transfer to Purchaser all such suspended proceeds. Upon receipt of such
funds and an appropriate accounting thereof, Purchaser shall be responsible for
proper distribution of all the suspended proceeds to the parties lawfully
entitled to them, and hereby agrees to indemnify, defend and hold harmless ARCO
from and against any and all claims, liabilities, losses, costs and expenses
(including, without limitation, court costs and reasonable attorneys' fees)
arising out of or relating to such suspended proceeds but only to the extent of
the funds actually transferred by ARCO to Purchaser representing such suspended
proceeds.

         11.3 RECEIPTS AND CREDITS. Subject to the terms hereof and in
accordance with the provisions of Section 11.1 herein, and except to the extent
same have already been taken into account as an adjustment to the Purchase
Price, all monies, proceeds, receipts, credits and income attributable to the
Assets (a) for all periods of time subsequent to the Effective Date, shall be
the sole property and entitlement of Purchaser, and, to the extent received by
ARCO, ARCO shall fully disclose, account for and transmit same to Purchaser and
(b) for all periods of time prior to the Effective Date, shall be the sole
property and entitlement of ARCO and, to the extent received by Purchaser,
Purchaser shall fully disclose, account for and transmit same to ARCO promptly.
Subject to the terms hereof and in accordance with the provisions of Section
11.1 herein, and except to the extent same have already been taken into account
as an adjustment to the Purchase Price, all costs, expenses, disbursements,
obligations and liabilities attributable to the Assets (i) for periods of time
prior to the Effective Date, regardless of when due or payable, shall be the
sole obligation of ARCO and ARCO shall pay, or if paid by Purchaser, promptly
reimburse Purchaser for and hold Purchaser harmless from and against same and
(ii) for periods of time subsequent to the Effective Date, regardless of when
due or payable, shall be the sole obligation of Purchaser and Purchaser shall
promptly pay, or if paid by ARCO, promptly reimburse ARCO for and hold ARCO
harmless from and against same. Except to the extent same have already been
taken into account as an adjustment to the Purchase Price, all uncollected
accounts receivable as of the Closing Date attributable to the Assets after the
Effective Date shall be assigned to Purchaser, and all uncollected accounts
receivable as of the Closing Date attributable to the Assets prior to the
Effective Date shall be retained by ARCO.

         11.4 ASSUMPTION OF LIABILITIES; CROSS INDEMNITY. If the Closing occurs,
ARCO and Purchaser agree as follows:

         (a) Purchaser hereby assumes and agrees to pay, perform and discharge
         the following liabilities and obligations (collectively, the "Assumed
         Obligations"):

                  (i) subject to the terms of Article 16, all liabilities and
                  obligations that are attributable to the ownership or
                  operation of the Assets on or after the Effective Date
                  (specifically excluding damage to property or injury to or
                  death of persons, in each case occurring after the Effective
                  Date but prior to the Closing Date);;

                  (ii) subject to the terms of Article 16, all liabilities and
                  obligations to properly plug and abandon all wells and remove
                  all related facilities and equipment now or hereafter located
                  on the Leasehold Interests and clean up and restore the
                  Leasehold Interests (including all obligations to clean, close
                  and abandon all pits and impoundments) in accordance with
                  applicable laws (regardless of whether any such obligation to
                  plug, abandon, remove, clean up and restore is attributable to
                  periods of time prior to or after the Effective Date); and

                  (iii) to the extent and only to the extent such matters are
                  disclosed on Exhibit 2.2, any and all obligations to make up,
                  deliver or pay for oil, gas or other hydrocarbons under (A)
                  any gas balancing or similar arrangements affecting the Assets
                  in respect of amounts owed thereunder by ARCO as of the
                  Effective Date, and (B) any take-or-pay, prepayment or similar
                  provisions of any production sales contracts included in the
                  Assets, to the extent any purchaser of production thereunder
                  has the right to apply any amounts received by ARCO pursuant
                  to such provisions as an offset against amounts otherwise due
                  for production or delivery of oil, gas or hydrocarbons not
                  delivered prior to the Effective Date;

         (b) Subject to the terms of Article 13, which shall control with
         respect to the tax matters covered thereby, and Article 16, which shall
         control with respect to the matters covered thereby, Purchaser agrees
         to indemnify, defend and hold harmless the ARCO Indemnified Parties
         from and against any and all claims, liabilities, losses, costs and
         expenses (including, without limitation, court costs and reasonable
         attorneys' fees, but excluding any amounts reimbursed from third party
         insurance) (collectively, "Losses") that are attributable to (i) the
         Assumed Obligations or (ii) a breach by Purchaser of its
         representations, warranties, covenants and agreements hereunder, IN
         EACH CASE WITHOUT REGARD TO THE SOLE, PARTIAL OR CONCURRENT NEGLIGENCE,
         GROSS NEGLIGENCE, STRICT LIABILITY, WILLFUL MISCONDUCT OR OTHER FAULT
         OF THE ARCO INDEMNIFIED PARTIES;

Purchase and Sale Agreement          Page 17

<PAGE>   18

         (c) Subject to the terms of Article 13, which shall control with
         respect to the tax matters covered thereby, and the terms of Article
         16, which shall control with respect to the matters covered thereby,
         ARCO agrees to indemnify, defend and hold harmless Purchaser and its
         agents and representatives (the "Purchaser Indemnified Parties") from
         and against any and all Losses that are attributable to (i) a breach by
         ARCO of its representations, warranties, covenants and agreements
         hereunder, or (ii) the lawsuits listed on Exhibit 9.6 and any other
         pending lawsuits not listed on Exhibit 9.6 for which ARCO has received
         actual notice on or before the Closing Date or (iii) the ownership or
         operation of the Assets before the Effective Date (excluding any
         matters and related Losses with respect to which Purchaser has agreed
         to indemnify, defend and hold harmless the ARCO Indemnified Parties
         pursuant to clause (b) above, Article 16 or elsewhere herein, or any
         matter with respect to which Purchaser has waived claims against ARCO,
         or released ARCO from liability, pursuant to Section 3.8 or elsewhere
         hereunder), IN EACH CASE WITHOUT REGARD TO THE SOLE, PARTIAL OR
         CONCURRENT NEGLIGENCE, GROSS NEGLIGENCE, STRICT LIABILITY, WILLFUL
         MISCONDUCT OR OTHER FAULT OF THE PURCHASER INDEMNIFIED PARTIES;

         (d) The indemnity, defense and hold harmless obligations set forth in
         Sections 11.4(b) and (c) above shall not apply to (i) a claim for
         indemnification by a party that relates to any amount or item for which
         such party received credit as an adjustment to the Purchase Price
         pursuant to the provisions hereof, (ii) either party's costs and
         expenses with respect to the negotiation and consummation of this
         Agreement and the transactions contemplated hereby or (iii) any Title
         Defect claims of Purchaser; and

         (e) EACH PARTY ACKNOWLEDGES AND AGREES THAT THE INDEMNITY, DEFENSE AND
         HOLD HARMLESS OBLIGATION SET FORTH IN SECTIONS 11.4(b) AND (c) ABOVE
         ARE INTENDED TO AND CONSTITUTE AN AGREEMENT OF PURCHASER, IN THE CASE
         OF SECTION 11.4(b), AND ARCO, IN THE CASE OF SECTION 11.4(c), TO
         INDEMNIFY AND PROTECT THE OTHER PARTY FROM THE CONSEQUENCES OF SUCH
         OTHER PARTY'S OWN NEGLIGENCE, STRICT LIABILITY, OR OTHER FAULT,
         REGARDLESS OF WHETHER SAME IS THE SOLE, PARTIAL OR CONCURRING CAUSE OF
         ANY APPLICABLE LOSSES AND, IN THE CASE OF NEGLIGENCE, REGARDLESS OF
         WHETHER SAME IS ACTIVE OR PASSIVE, OR THE RESULT OF AN AFFIRMATIVE ACT
         OR OMISSION.

         11.5 FURTHER ASSURANCES. After Closing, ARCO and Purchaser agree to
take such further actions and to execute, acknowledge and deliver such
additional documents and instruments as may be necessary or useful in carrying
out the purposes of this Agreement or of any document delivered pursuant hereto.

                            ARTICLE 12 - TERMINATION

         12.1 RIGHT OF TERMINATION. This Agreement and the transactions
contemplated hereby may be terminated:

         (a) Pursuant to any provisions of this Agreement expressly permitting
         termination by a party;

         (b) At any time at or prior to Closing by mutual consent of ARCO and
         Purchaser; or

         (c) At any time at or after October 1, 1999, by ARCO or Purchaser, by
         the delivery of written notice to the other party, if the Closing shall
         not have occurred by such date;

provided, however no such party may exercise any right of termination pursuant
to this Section 12.1 if the event giving rise to such termination right shall be
due to the willful failure of such party to perform or observe in any material
respect any of the covenants or agreements set forth herein to be performed or
observed by such party.

         12.2 EFFECT OF TERMINATION. If this Agreement is terminated pursuant to
Section 12.1, this Agreement shall become void and of no further force or effect
(except for the provisions of Sections 4.4, 5.4, 7.1, 7.2, 7.3, 17.1 through
17.8, 17.11, and 17.12, which shall survive such termination and continue in
full force and effect); provided, however, that, if either party is in default
of its obligations under this Agreement at the time this Agreement is so
terminated, such defaulting party shall continue to be liable to the other party
for damages (but in no event for specific performance) in respect of such
default and such liability shall not be affected by such termination (unless
ARCO becomes entitled to retain the Deposit as provided in Section 2.1(d), in
which case such retention of the Deposit shall constitute ARCO's sole remedy for
Purchaser's failure to consummate the transactions contemplated hereunder).
Notwithstanding anything to the contrary contained in this Agreement, upon any
termination of this Agreement pursuant to Section 12.1, ARCO shall be free
immediately to enjoy all rights of ownership of the Assets and to sell,
transfer, encumber or otherwise dispose of the Assets to any party without any
restriction under this Agreement; and Purchaser shall be liable for all actual,
incidental and consequential damages (including, without limitation, lost
profits) if it attempts to interfere in any way with any such enjoyment or
action by ARCO.

Purchase and Sale Agreement          Page 18

<PAGE>   19

                               ARTICLE 13 - TAXES

         13.1 APPORTIONMENT OF AD VALOREM AND PROPERTY TAXES. All ad valorem
taxes, real property taxes, personal property taxes and similar obligations
("Property Taxes") attributable to the Assets with respect to the tax period in
which the Effective Date occurs shall be apportioned as of the Effective Date
between ARCO and Purchaser. The owner of record on the assessment date shall
file or cause to be filed all required reports and returns incident to the
Property Taxes and shall pay or cause to be paid to the taxing authorities all
Property Taxes relating to the tax period on which the Effective Date occurs. If
ARCO is the owner of record on the assessment date, then Purchaser shall pay to
ARCO Purchaser's pro rata portion of Property Taxes within 30 days after receipt
of ARCO's invoice therefor, except to the extent taken into account as an
adjustment to the Purchase Price pursuant to Section 2.2. If Purchaser is the
owner of record as of the assessment date then ARCO shall pay to Purchaser
ARCO's pro rata portion of Property Taxes within 30 days after receipt of
Purchaser's invoice therefor.

         13.2 SALES TAXES. The Purchase Price provided for hereunder excludes
any sales taxes or other taxes required to be paid in connection with the sale
of the Assets pursuant to this Agreement. Purchaser, however, shall be liable
for any sales and use taxes, conveyance, transfer and recording fees and real
estate transfer stamps or taxes that may be imposed on any transfer of the
Assets pursuant to this Agreement. ARCO shall, in accordance with applicable
law, collect and remit any sales or similar taxes that are required to be paid
as a result of the transfer of the Assets by ARCO to Purchaser. If the transfer
of the Assets pursuant to this Agreement is exempt from applicable sales or
similar taxes, Purchaser shall, at Closing, provide ARCO with properly executed
exemption certificates or other documentation acceptable under applicable law.

         13.3 OTHER TAXES. All taxes (other than income taxes) attributable to
the Assets that are imposed on or with respect to the production of oil, natural
gas or other hydrocarbons or minerals or the receipt of proceeds therefrom
(including but not limited to severance, production, and excise taxes) shall be
apportioned between the parties based upon the respective shares of production
taken by the parties. All such taxes that have accrued with respect to the
period prior to the Closing Date have been or will be properly paid or withheld
by ARCO (although such taxes for the period between the Effective Date and the
Closing Date will be taken into account as an adjustment to the Purchase Price
pursuant to Section 2.2(a)(i)) and all statements, returns, and documents
pertinent thereto have been or will be properly filed. Purchaser shall be
responsible for paying or withholding or causing to be paid or withheld all such
taxes which have accrued after the Closing Date and for filing all statements,
returns, and documents incident thereto.

         13.4 COOPERATION. Each party to this Agreement shall provide the other
party with reasonable access to all relevant documents, data and other
information (other than that which is subject to an attorney-client privilege)
which may be required by the other party for the purpose of preparing tax
returns, filing refund claims and responding to any audit by any taxing
jurisdiction. Each party to this Agreement shall cooperate with all reasonable
requests of the other party made in connection with contesting the imposition of
taxes. Notwithstanding anything to the contrary in this Agreement, neither party
to this Agreement shall be required at any time to disclose to the other party
any tax return or other confidential tax information. Except where disclosure is
required by applicable law or judicial order, any information obtained by a
party pursuant to this Section 13.4 shall be kept confidential by such party,
except to the extent disclosure is required in connection with the filing of any
tax returns or claims for refund or in connection with the conduct of an audit,
or other proceedings in response to an audit, by a taxing jurisdiction.

         13.5 INDEMNIFICATION FOR TAX.

         (a) Subject to the provisions of Section 13.5(b), ARCO shall indemnify
         Purchaser for all liabilities that are assessed against Purchaser for
         foreign, federal, state, local or Indian Tribal taxes (other than
         income taxes) in respect of the ownership or operation of the Assets
         prior to the Effective Date, together with penalties and interest
         thereon (provided such penalties and interest do not result from the
         negligence, late filing, fraud or acts of misfeasance or malfeasance of
         Purchaser), to the extent such liabilities exceed the amounts of such
         taxes paid by ARCO; provided that ARCO shall be entitled to all refunds
         or rebates of taxes paid in respect of the ownership or operation of
         the Assets prior to the Effective Date that may be received by ARCO or
         Purchaser. Subject to the provisions of Section 13.5(b), Purchaser
         shall indemnify ARCO for all liabilities which are assessed against
         ARCO for foreign, federal, state, local or Indian Tribal taxes (other
         than income taxes), together with penalties and interest thereon
         (provided such penalties and interest do not result from the
         negligence, late filing, fraud or acts of misfeasance or malfeasance of
         ARCO), to the extent such liabilities relate to the ownership or
         operation of the Assets from and after the Effective Date; provided,
         however, that such indemnity shall not apply to windfall profit,
         severance or production taxes on oil and gas production from the Assets
         on or after the Effective Date to the extent (but only to the extent)
         such taxes are included in the determination of the Adjusted Purchase
         Price, and provided further, however, that Purchaser shall be entitled
         to all refunds or rebates of windfall profit, severance or production
         taxes on oil and gas production from the Assets on or after the
         Effective Date that may be received by ARCO or Purchaser, except to the
         extent (but only to the extent) such refunds or rebates are included in
         the determination of the Adjusted Purchase Price.

         (b) In order for ARCO or Purchaser ("Claimant") to make a claim against
         the other ("Indemnitor") under this Article 13, Claimant shall give
         prompt notice to Indemnitor of any liability

Purchase and Sale Agreement          Page 19

<PAGE>   20

         for which Claimant would claim indemnification under this Article 13,
         which notice shall include the circumstances surrounding such
         liability. Indemnitor shall then have the right but not the
         obligation, to contest such liability at its sole cost and expense by
         giving written notice to Claimant of such election within 30 days
         after Indemnitor receives Claimant's notice. Should Indemnitor fail to
         notify Claimant within such 30-day period, Indemnitor shall be deemed
         to have elected not to contest such liability. Should Indemnitor elect
         (or be deemed to have elected) not to contest such liability,
         Indemnitor shall pay the full amount due under Section 13.5(a) in
         respect of such liability to Claimant in cash within 30 days after
         Indemnitor elects (or is deemed to have elected) not to contest such
         liability. Except as specifically provided in this Section 13.5 with
         respect to certain tax issues which must be combined or joined with
         other tax issues, if Indemnitor elects to contest any such liability,
         Claimant shall give Indemnitor full authority to defend, adjust,
         compromise or settle such liability and any action, suit, or
         proceeding in which Indemnitor contests such liability, in the name of
         Claimant or otherwise as Indemnitor shall elect. In any administrative
         or legal proceeding, Indemnitor shall employ counsel selected by it
         and reasonably acceptable to Claimant. With respect to tax issues
         incident to any such liability that must be combined or joined with
         one or more other tax issues which Claimant desires to contest,
         Claimant and Indemnitor shall cooperate fully, and control of any
         administrative legal proceeding shall rest with the party having the
         greater ultimate liability (including liability under Section 13.5(a)
         for the taxes in dispute). The party in control may not adjust,
         compromise or settle taxes which are contested by or on behalf of the
         other party without the consent of the other party. With respect to
         any liability contested by Indemnitor under the terms of this Section
         13.5(b), Indemnitor shall pay the full amount due under Section
         13.5(a) in respect of such liability to Claimant in cash within 30
         days after the liability is finally determined either by settlement or
         pursuant to the final unappealable judgment of a court of competent
         jurisdiction.

                         ARTICLE 14 - DOCUMENT RETENTION

         14.1 INSPECTION. As used in this Article 14, "Documents" shall mean all
files, documents, books and records delivered to Purchaser by ARCO that relate
to the Assets, including, but not limited to: financial and tax accounting
records; land, title and division of interest files; contracts; engineering and
well files; and books and records related to the operation of the Assets during
the Interim Period. Subject to the provisions of Section 14.2, Purchaser agrees
that the Documents shall be open for inspection by representatives of ARCO at
reasonable times and upon reasonable notice during regular business hours for a
period of 10 years following the date of Closing (or for such longer period as
may be required by law or governmental regulation), and that ARCO may during
such period at its expense make such copies thereof as it may reasonably
request.

         14.2 DESTRUCTION. For a period of 10 years after the date of Closing
(or for such longer period as may be required by law or governmental
regulation), Purchaser shall not destroy or give up possession of any original
or final copy of the Documents without first offering ARCO the opportunity (by
delivery of written notice to ARCO as provided in Section 17.1, with an
additional copy of such notice delivered to the attention of ARCO's Tax
Department), at ARCO's expense (without any payment to Purchaser), to obtain
such original or final copy or a copy thereof. After the conclusion of such
period, Purchaser shall offer to deliver to ARCO, at ARCO's expense (without any
payment to Purchaser), the Documents prior to destroying the same.

         14.3 ACCESS. ARCO and Purchaser each shall use its best efforts to
afford the other access to (a), in the case of ARCO, employees of ARCO who
remain employees of ARCO following the date of Closing and are familiar with the
operations of the Assets and (b) in the case of Purchaser, employees of
Purchaser which ARCO shall reasonably request for its proper corporate purposes,
including without limitation, the defense of legal proceedings. Such access may
include interviews or attendance at depositions or legal proceedings; provided,
however, that in any event all out-of-pocket expenses (including wages and
salaries) reasonably incurred by any party in connection with this Section 14.3
shall be paid or promptly reimbursed by the party requesting such services.

              ARTICLE 15 - INDEPENDENT INVESTIGATION AND DISCLAIMER

         15.1 INDEPENDENT INVESTIGATION AND DISCLAIMER. Purchaser acknowledges
that (a) it has had and pursuant to this Agreement will have prior to the
Closing access to the Assets and the employees of ARCO and (b) in making the
decision to enter into this Agreement and consummate the transactions
contemplated hereby, Purchaser has relied solely on the basis of its own
independent investigation of the Assets and upon the representations,
warranties, covenants and agreements set forth in this Agreement. Accordingly,
Purchaser acknowledges that, except as expressly set forth herein, ARCO has not
made, AND ARCO HEREBY EXPRESSLY DISCLAIMS AND NEGATES, ANY REPRESENTATION OR
WARRANTY, EXPRESSED, IMPLIED, AT COMMON LAW, BY STATUTE, OR OTHERWISE RELATING
TO (i) THE CONDITION OF THE ASSETS (INCLUDING WITHOUT LIMITATION, ANY IMPLIED OR
EXPRESSED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR OF
CONFORMITY TO MODELS OR SAMPLES OF MATERIALS, OR ENVIRONMENTAL CONDITION), (ii)
ANY INFRINGEMENT BY ARCO OF ANY PATENT OR PROPRIETARY RIGHT OF ANY THIRD PARTY,
AND (iii) ANY INFORMATION, DATA OR OTHER MATERIALS (WRITTEN OR ORAL) FURNISHED
TO PURCHASER BY OR ON BEHALF OF ARCO (INCLUDING, WITHOUT LIMITATION, IN RESPECT
OF GEOLOGICAL, GEOPHYSICAL AND SEISMIC DATA, THE EXISTENCE OR EXTENT OF OIL, GAS
OR OTHER MINERAL RESERVES, THE

Purchase and Sale Agreement          Page 20

<PAGE>   21

RECOVERABILITY OF OR THE COST OF RECOVERING ANY SUCH RESERVES, THE VALUE OF SUCH
RESERVES, ANY PRODUCT PRICING ASSUMPTIONS, AND THE ABILITY TO SELL OIL OR GAS
PRODUCTION AFTER CLOSING AND THE ABILITY OF PURCHASER TO BECOME OPERATOR OF THE
ASSETS UNDER THE APPLICABLE OPERATING AGREEMENT); AND PURCHASER WILL HAVE SOLE
RESPONSIBILITY FOR ANY ACTION TAKEN BY PURCHASER, OR BY OTHERS RELYING ON
PURCHASER'S ADVICE, BASED ON THE GEOLOGICAL MAPS, RECORDS, LOGS AND OTHER DATA,
IF ANY, TRANSFERRED UNDER THIS AGREEMENT; provided, however, that the foregoing
disclaimer and negation of representations and warranties shall not affect or
impair the representations and warranties of ARCO set forth in Article 4 hereof.
As used in the disclaimer provisions of this Section 15.1, "ARCO" shall include
ARCO's agents, representatives and consultants.

                       ARTICLE 16 - ENVIRONMENTAL MATTERS

         16.1 PHYSICAL AND ENVIRONMENTAL CONDITIONS. Purchaser agrees and
acknowledges that (a) it has had, or prior to the Closing will have, access to
and the opportunity to inspect the Assets for all purposes, including without
limitation, for the purposes of detecting the presence of hazardous or toxic
substances, pollutants or other contaminants, environmental hazards, naturally
occurring radioactive materials (NORM) and produced water contamination of the
surface and/or subsurface, (b) it has, or prior to the Closing will have,
satisfied itself as to the physical and environmental condition of the Assets,
both surface and subsurface, and their method of operation and except as set
forth herein, agrees to accept an assignment of the Assets at Closing on an "AS
IS, WHERE IS" basis, "WITH ALL FAULTS" and (c) in making the decision to enter
in this Agreement and consummate the transactions contemplated hereby, Purchaser
has relied solely on the basis of its own independent investigation of the
Assets and the records related thereto (including the Environmental Reports (as
defined below)). Accordingly, Purchaser further acknowledges that with respect
to any tests, evaluations or reports that have been conducted or prepared by or
on behalf of ARCO pertaining to the environmental condition or operation of the
Assets and that are delivered to Purchaser prior to the date hereof (the
"Environmental Reports"), ARCO EXPRESSLY DISCLAIMS AND NEGATES ANY
REPRESENTATION OR WARRANTY RESPECTING THE ACCURACY OR THOROUGHNESS THEREOF AND
DISCLAIMS ANY LIABILITY IN CONNECTION THEREWITH, IN EACH CASE WITHOUT REGARD TO
THE SOLE, PARTIAL OR CONCURRENT NEGLIGENCE, STRICT LIABILITY OR OTHER FAULT OF
ARCO. Purchaser further acknowledges that it has reviewed, examined and
thoroughly familiarized itself with the contents of the Environmental Reports.

         16.2 GENERAL ENVIRONMENTAL INDEMNITY. If the Closing occurs, except as
provided in the proviso clause of the first sentence of this Section 16.2 and
without limiting Purchaser's obligations under Section 11.4, Purchaser hereby
assumes and shall be responsible for and agrees to indemnify, defend and hold
harmless the ARCO Indemnified Parties from and against any and all Losses
attributable to damage to property, injury to or death of persons or other
living things, natural resource damages, CERCLA response costs, environmental
remediation and restoration costs, or fines or penalties (collectively,
"Claims") arising out of or attributable to, in whole or in part, either
directly or indirectly, the ownership, condition or operation of the Assets at
any time before, at or after the Effective Date (including, without limitation,
any Claims relating to any condition existing on, in or under, or resulting from
operation of, the Assets as of the Effective Date) WITHOUT REGARD TO THE SOLE,
PARTIAL OR CONCURRENT NEGLIGENCE, STRICT LIABILITY OR OTHER FAULT OF THE ARCO
INDEMNIFIED PARTIES; provided, however, that ARCO shall indemnify, defend and
hold harmless the Purchaser Indemnified Parties from and against any Claim
arising out of or attributable to, in whole or in part, either directly or
indirectly, the condition or operation of the Assets at any time before the
Effective Date that is determined to be the result of or caused in whole or in
part by ARCO's violation of, failure to fulfill duties imposed by or incurrence
of liability under, any Environmental Laws (as in effect on the Effective Date)
(other than any such Claims resulting from or attributable in whole or in part
to conditions or operations disclosed in the Environmental Reports or known to
Purchaser as of the date hereof), to the extent that such Claim has been finally
determined in a third-party lawsuit or administrative proceeding or order that
is filed, issued or commenced against Purchaser on or before the first
anniversary of the Closing Date. In no event shall ARCO's aggregate liability
pursuant to the proviso clause of the immediately preceding sentence exceed an
amount equal to $500,000.00. Notwithstanding anything to the contrary
hereinabove, ARCO agrees to fully indemnify, defend and hold Purchaser harmless
from and against the Claims arising or that may arise in that certain lawsuit
known as Harris, et al., v. East Texas Salt Water Disposal Company, et al., as
described on Exhibit 9.6, to the extent of and attributable to Purchaser's
ownership of the Assets transferred herein, regardless of when such Claims are
made.

         16.3 ENVIRONMENTAL LAWS. As used herein, the term "Environmental Laws"
shall mean any and all federal, state and local statutes, regulations, rules,
orders, ordinances, or permits of any governmental authority pertaining to
health, the environment, wildlife or natural resources in effect in any and all
jurisdictions in which the Assets are located, including, without limitation,
the Clean Air Act, as amended, and the Federal Water Pollution Control Act, as
amended, the Rivers and Harbors Act of 1899, as amended, the Safe Drinking Water
Act, as amended, the Comprehensive Environmental Response, Compensation and
Liability Act ("CERCLA"), as amended, the Superfund Amendments and
Reauthorization Act of 1986 ("SARA"), as amended, the Resource Conservation and
Recovery Act ("RCRA"), as amended, The Hazardous and Solid Waste Amendments Act
of 1984, as amended, the Toxic Substances Control Act, as amended, the
Occupational Safety and Health Act ("OSHA"), as amended, and the Hazardous
Materials Transportation Act, as amended.

Purchase and Sale Agreement          Page 21

<PAGE>   22

         16.4 ENVIRONMENTAL ASSESSMENT. Purchaser shall have the right for a
period commencing upon execution of this Agreement by both parties and ending on
August 13, 1999, to conduct an environmental assessment of the Assets, at
Purchaser's sole risk, liability and expense. ARCO shall make available to
Purchaser, during the environmental assessment period described above, ARCO's
historical files regarding prior operations on the Assets, and provide Purchaser
and its representatives with reasonable access to the Assets to conduct the
environmental assessment. ARCO shall have the right to be present during any
assessment and, if any testing is conducted, ARCO may require splitting of all
samples.

         16.5 INDEMNIFICATION OF MATERIAL ADVERSE ENVIRONMENTAL CONDITIONS.
Purchaser shall advise ARCO of any material adverse environmental condition
("Condition") of the Assets which it finds unacceptable and shall provide
evidence thereof on or before the end of the environmental assessment period
provided for in Section 16.4. For the purposes of this Section 16.5 a Condition
shall be "material" only if the cost to remediate said Condition to levels
reasonably acceptable to Purchaser to assure compliance with all applicable
environmental laws or other directives exceeds $10,000.00. Purchaser shall treat
all information regarding any Condition as confidential, whether material or
note, and shall not make any contact with any governmental authority or third
party regarding same without ARCO's written consent, unless required by
applicable law or other directive.

         16.6 REMEDIES FOR IDENTIFIED CONDITIONS. Upon receipt of such notice
with respect to each Condition identified by Purchaser, ARCO shall propose to
Purchase to either (i) agree with Purchaser on an adjustment to the Purchaser
Price, which adjustment shall reflect the cost to remediate such Condition; (ii)
if reasonably feasible, remove the affected Assets from the Assets being
conveyed and adjust the Purchase Price accordingly; or (iii) agree to indemnify
Purchaser from any and all damages, claims, losses and expenses pertaining to
the existence and remediation of such Condition. If ARCO's proposal is
unacceptable to Purchaser, then, unless Purchaser is willing to waive the
Condition(s), Purchase shall have the right to terminate this Agreement by
written notice to ARCO and be releases from all further obligations under this
Agreement.

                           ARTICLE 17 - MISCELLANEOUS

         17.1 GOVERNING LAW. This Agreement and all instruments executed in
accordance with it shall be governed by and interpreted in accordance with the
laws of the State of Texas, without regard to conflict of law rules that would
direct application of the laws of another jurisdiction, except to the extent
that it is mandatory that the law of some other jurisdiction, wherein the Assets
are located, shall apply. The laws of the state wherein the Leasehold Interests
are located shall control as to all matters pertaining to title and Title
Defects pursuant to Article 3 herein, and to the evaluation of encumbrances
placed upon such Leasehold Interests pursuant to Section 3.3 herein.

         17.2 ENTIRE AGREEMENT. This Agreement, including all Exhibits attached
hereto and made a part hereof, together with the Prior Confidentiality
Agreements, constitute the entire agreement between the parties with respect to
the subject matter hereof and thereof and supersede all prior agreements,
understandings, negotiations and discussions, whether oral or written, of the
parties with respect to same. No supplement, amendment, alteration,
modification, waiver or termination of this Agreement shall be binding unless
executed in writing by the parties hereto.

         17.3 WAIVER. No waiver of any of the provisions of this Agreement shall
be deemed or shall constitute a waiver of any other provisions hereof (whether
or not similar), nor shall such waiver constitute a continuing waiver unless
otherwise expressly provided.

         17.4 CAPTIONS. The captions in this Agreement are for convenience only
and shall not be considered a part of or affect the construction or
interpretation of any provision of this Agreement.

         17.5 ASSIGNMENT. Except as expressly provided herein to the contrary,
neither party hereto shall assign this Agreement or any of its rights or
obligations hereunder without the prior written consent of the other party and
any assignment made without such consent shall be void. Except as otherwise
provided herein, this Agreement shall be binding upon and inure to the benefit
of the parties hereto and their respective successors and permitted assigns.
After Closing, ARCO acknowledges and agrees that the restrictions set forth in
this Section 17.5 shall not obligate Purchaser to obtain the written consent of
ARCO prior to any assignment by Purchaser of its ownership interest in the
Assets, and Purchaser acknowledges and agrees that any such assignment shall not
release Purchaser from any of its liabilities or obligations hereunder. nor
extend or increase any of the liabilities or obligations of ARCO hereunder.

         17.6 NOTICES. Any notice provided or permitted to be given under this
Agreement shall be in writing, and may be served by personal delivery or by
depositing same in the mail, addressed to the party to be notified, postage
prepaid, and registered or certified with a return receipt requested. Notice
deposited in the mail in the manner hereinabove described shall be deemed to
have been given and received on the date of the delivery as shown on the return
receipt. Notice served in any other manner shall be deemed to have been given
and received only if and when actually received by the addressee (except that
notice given by telecopier shall be deemed given and received upon receipt only
if received during normal business hours and if received other than during
normal business hours shall be deemed received as of the opening of business on
the next Business Day). For purposes of notice, the addresses of the parties
shall be as follows:

Purchase and Sale Agreement          Page 22

<PAGE>   23

         For ARCO:

         Street Address:                          Mailing Address:

         Atlantic Richfield Company               Atlantic Richfield Company
         600 North Marienfeld                     P. O. Box 1610
         Midland, Texas 79701                     Midland, Texas 79702
         Attn: Business Development
         Telecopy No.: 915/688-5956

         For Purchaser:

         Street Address:                          Mailing Address:

         Future Acquisition 1995, Ltd.            Future Acquisition 1995, Ltd.
         700 Louisiana, Suite 3700                700 Louisiana, Suite 3700
         Houston, TX  77002                       Houston, TX  77002
         Attn: Tim J. Goff
         Telecopy No.: 713/236-9799

Each party shall have the right, upon giving 10 days' prior notice to the other
in the manner hereinabove provided, to change its address for purposes of
notice.

         17.7 EXPENSES. Except as otherwise provided herein, each party shall be
solely responsible for all expenses incurred by it in connection with this
transaction (including, without limitation, fees and expenses of its own counsel
and consultants). Purchaser shall pay for all documentary, filing and recording
fees required in connection with the filing and recording of the Conveyance,
Assignment and Bill of Sale delivered by ARCO to Purchaser at Closing. Within 45
days following Closing, Purchaser shall furnish ARCO with a statement setting
forth the recording information for each county wherein such Conveyance,
Assignment and Bill of Sale was recorded.

         17.8 SEVERABILITY. If any term or other provision of this Agreement is
invalid, illegal or incapable of being enforced under any rule of law, all other
conditions and provisions of this Agreement shall nevertheless remain in full
force and effect so long as the economic or legal substance of the transactions
contemplated hereby is not affected in a materially adverse manner with respect
to either party.

         17.9 PUBLICITY. ARCO and Purchaser shall consult with each other with
regard to all publicity and other releases issued at or prior to the Closing
concerning this Agreement and the transactions contemplated hereby and, except
as required by applicable law or the applicable rules or regulations of any
governmental body or stock exchange, neither party shall issue any publicity or
other release without the prior written consent of the other party.

         17.10 USE OF ARCO'S NAME. As soon as practicable after the Closing,
Purchaser shall remove or cause to be removed the names and marks used by ARCO
and all variations and derivatives thereof and logos relating thereto from the
Assets and shall not thereafter make any use whatsoever of those names, marks
and logos. In the event Purchaser has not completed such removal within 120 days
after Closing, ARCO shall have the right but not the obligation to complete such
removal or cause such removal to be completed. and Purchaser shall reimburse
ARCO for any costs or expenses incurred by ARCO in connection therewith. ARCO
agrees to give Purchaser 48 hour notice (exclusive of Saturday, Sunday and legal
holidays) prior to the removal of any signs by ARCO at Purchaser's expense.

         17.11 CONSEQUENTIAL DAMAGES. Except as expressly provided in Section
12.2, the parties waive any rights to incidental or consequential damages
resulting from a breach of this Agreement, including, without limitation, loss
of profits.

         17.12 NO THIRD-PARTY BENEFICIARY. Except as expressly provided herein,
this Agreement is not intended to create, nor shall it be construed to create,
any rights in any third party under doctrines concerning third-party
beneficiaries.

         17.13 SURVIVAL. Except with respect to the covenants set forth in
Sections 6.1 and 6.2, the representations, warranties, covenants and obligations
of the parties under this Agreement shall survive the Closing; provided,
however, that any claim with respect to the breach thereof may be made only if
the party claiming a breach thereof shall have notified the breaching party (i)
on or before the first anniversary of the Effective Date in the case of ARCO's
indemnification of Purchaser as set forth in Section 16.2, and (ii) on or before
the first anniversary of the Effective Date in the case of any indemnification
by ARCO for Title Defects pursuant to Section 3.5 and (iii) at any time in the
case of all other provisions.

         17.14 COUNTERPART; EXHIBITS. This Agreement may be executed in one or
more counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument. All Exhibits attached
hereto are hereby made a part of this Agreement and incorporated herein by this
reference.

Purchase and Sale Agreement          Page 23

<PAGE>   24

         17.15 ACCESS ACROSS LEASEHOLD INTERESTS. Purchaser agrees to allow ARCO
access, at no cost or expense to ARCO, to or across the Leasehold Interests, if
ARCO conducts future operations in the vicinity of the Leasehold Interests or if
ARCO exercises its rights under Section 17.10.

         17.16 OPERATORSHIP MATTERS.

         (a) Notwithstanding anything herein to the contrary, ARCO does not
         represent to Purchaser that Purchaser will succeed to ARCO's
         operatorship of any unit or well constituting a part of the Assets.
         Purchaser acknowledges and agrees that Purchaser will be required to
         comply with the terms of any applicable operating agreement, unit
         operating agreement or other contract relating to any elections or
         other selection procedures in order to succeed ARCO as operator
         thereunder.

         (b) ARCO shall prepare change of operatorship forms for signature by
         Purchaser at Closing, and promptly following Closing shall cause such
         forms to be filed with the appropriate authorities. Purchaser shall
         reimburse ARCO for all filing and related fees, if any, incurred by
         ARCO in connection with the filing of any change of operatorship forms
         and shall provide ARCO with evidence of the acceptance by the
         applicable government authority of any such change of operatorship.

         17.17 CONFLICT WITH ASSIGNMENT. ARCO and Purchaser acknowledge and
agree that in the event of any conflict or inconsistency between the terms and
provisions of this Agreement and the terms and provisions of either the
Conveyance, Assignment and Bill of Sale or the Term Mineral Deed executed and
delivered at Closing by ARCO and Purchaser, the terms and provisions of this
Agreement shall control.

         17.18 YEAR 2000 COMPLIANCE. In addition to, and not in alteration,
amendment or limitation of, any other provisions of this Agreement, Purchaser
expressly acknowledges and agrees that: (a) ARCO either has not assessed, or, if
it has assessed, has not (or may not have or not fully have) modified, replaced
or otherwise remediated, the Assets, including any components thereof or systems
related thereto or embedded therein, to determine whether they are Year 2000
Compliant, as defined herein. (b) If the Assets are not operated by ARCO, ARCO
is either unaware of, or has not verified any statements or representations made
by the Operator pertaining to, whether or not the Operator has made any such
assessment or taken any actions relating thereto, including modification,
replacement or other remediation. (c) IF ANY OF THE ASSETS, INCLUDING ANY
COMPONENTS THEREOF OR SYSTEMS RELATED THERETO OR EMBEDDED THEREIN, ARE NOT YEAR
2000 COMPLIANT, THEIR ABILITY TO MAINTAIN PRODUCTION OR OTHERWISE FUNCTION OR
OPERATE MAY BE AFFECTED. (d) AS BETWEEN PURCHASER AND ARCO, PURCHASER ASSUMES,
RELEASES ARCO FROM, AND AGREES TO DEFEND, INDEMNIFY AND HOLD ARCO HARMLESS FROM
AND AGAINST, ANY AND ALL RESPONSIBILITY AND LIABILITY FOR ANY CLAIMS OR PROBLEMS
RELATING TO OR ARISING FROM THE YEAR 2000 COMPLIANCE STATUS OF THE ASSETS,
INCLUDING ANY COMPONENTS THEREOF OR SYSTEMS RELATED THERETO OR EMBEDDED THEREIN,
and ARCO shall have no liability whatsoever for any Claims or problems Purchaser
may incur or encounter arising from or associated in any way with the Year 2000
Compliance status of the Assets, including any components thereof or systems
related thereto or embedded therein. (e) Any disclosures made by ARCO as to Year
2000 Compliance (including but not limited to disclosures as to ARCO's or the
Operator's or a manufacturer's/supplier's assessments, inventories, testing,
modification, replacement, etc.), whether made orally or in writing, and whether
made before or after Closing, are for informational purposes only and Purchaser
relies and depends on and uses any and all such disclosures exclusively and
entirely at its own risk and without any recourse to ARCO whatsoever. SUCH
DISCLOSURES DO NOT AND SHALL NOT CREATE OR BE CONSTRUED TO CREATE ANY EXPRESS OR
IMPLIED WARRANTIES ON THE PART OF ARCO, AND ANY SUCH EXPRESS OR IMPLIED
WARRANTIES ARE EXPRESSLY DISCLAIMED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. (f) "Year
2000 Compliant" means the Assets, including any components thereof or systems
related thereto or embedded therein, would: (i) Correctly process date
information before and after midnight, December 31, 1999. This would include
accepting date input, providing date output, and performing calculations and
comparisons on dates or portions of dates. Date interpretation would be correct
for all valid date values within the applicable domain; (ii) Function accurately
and without interruption before and after January 1, 2000 without any change in
operations associated with any date change and/or the advent of the new century;
(iii) Respond to two-digit input in a way that would resolve the ambiguity as to
the century in a disclosed, defined, and predetermined manner. Interfacing
software would make the same century assumptions when processing the two-digit
years; (iv) Process the Year 2000 as a leap year; (v) Correctly handle date
fields containing non-date information and correctly handle a date held in a
non-date field; and (vi) Correctly process any date with a year specified as
"99" and "00", regardless of other subjective meanings attached to these values.

         17.19 DTPA WAIVER. TO THE EXTENT APPLICABLE TO THE ASSETS OR ANY
PORTION THEREOF, PURCHASER HEREBY WAIVES THE PROVISIONS OF THE TEXAS DECEPTIVE
TRADE PRACTICES ACT, CHAPTER 17, SUBCHAPTER E, SECTIONS 17.41 THROUGH 17.63,
INCLUSIVE (OTHER THAN SECTION 17.555, WHICH IS NOT WAIVED), TEX. BUS. & COM.
CODE. In order to evidence its ability to grant such waiver, Purchaser hereby
represents and warrants to ARCO that Purchaser (a) is in the business of seeking
or acquiring, by purchase or lease, goods or services for commercial or business
use, (b) has assets of $5 million or more according to its most recent financial
statement prepared in accordance with generally accepted accounting principles,
(c) has knowledge and experience in financial and business matters that enable
it to evaluate the merits and risks of the transaction contemplated hereby, and
(d) is not in a significantly disparate bargaining position.

Purchase and Sale Agreement          Page 24

<PAGE>   25

         17.20 ACKNOWLEDGMENT REGARDING CERTAIN PROVISIONS. EACH OF THE PARTIES
HERETO SPECIFICALLY ACKNOWLEDGES AND AGREES (A) THAT IT HAS A DUTY TO READ THIS
AGREEMENT AND THAT IT IS CHARGED WITH NOTICE AND KNOWLEDGE OF THE TERMS HEREOF,
(B) THAT IT HAS IN FACT READ THIS AGREEMENT AND IS FULLY INFORMED AND HAS FULL
NOTICE AND KNOWLEDGE OF THE TERMS, CONDITIONS AND EFFECTS OF THIS AGREEMENT, (C)
THAT IT HAS BEEN REPRESENTED BY LEGAL COUNSEL OF ITS CHOICE THROUGHOUT THE
NEGOTIATIONS PRECEDING ITS EXECUTION OF THIS AGREEMENT AND HAS RECEIVED THE
ADVICE OF SUCH COUNSEL IN CONNECTION WITH ENTERING INTO THIS AGREEMENT, AND (D)
THAT IT RECOGNIZES THAT CERTAIN OF THE TERMS OF THIS AGREEMENT PROVIDE FOR THE
ASSUMPTION BY ONE PARTY OF, AND/OR RELEASE OF THE OTHER PARTY FROM, CERTAIN
LIABILITIES ATTRIBUTABLE TO THIS TRANSACTION OR THE PREMISES COVERED HEREBY THAT
SUCH PARTY WOULD OTHERWISE BE RESPONSIBLE FOR UNDER THE LAW. EACH PARTY HERETO
FURTHER AGREES THAT IT WILL NOT CONTEST THE VALIDITY OR ENFORCEABILITY OF ANY
SUCH PROVISIONS OF THIS AGREEMENT ON THE BASIS THAT THE PARTY HAD NO NOTICE OR
KNOWLEDGE OF SUCH PROVISIONS OR THAT SUCH PROVISIONS ARE NOT "CONSPICUOUS".

         IN WITNESS WHEREOF, the parties have executed this Agreement as of the
day and year first set forth above:


                                    ATLANTIC RICHFIELD COMPANY ("ARCO")


                                    By:
                                        ---------------------------------------
                                        Name:    T. L. Holland
                                        Title:   Attorney in Fact


                                    FUTURE ACQUISITION 1995, LTD. ("PURCHASER")

                                    BY:  FUTURE PETROLEUM CORPORATION,
                                         ITS GENERAL PARTNER


                                         By:
                                             ----------------------------------
                                             Name:    Tim J. Goff
                                             Title:   President





Purchase and Sale Agreement          Page 25
<PAGE>   26
                                    EXHIBIT A

   Attached to and made a part of that certain Surface Lease dated October 1,
    1999, by and between, Atlantic Richfield Company, as Lessor, and Future
      Acquisition 1995, Ltd., as Lessee, covering the following described
                                 tract of land:

     BEING 24.405 acres of land located in the William Castleberry Survey, Gregg
     County, Texas, said 24.405 acre tract of land being a part of the T. B.
     Harris-Atlantic Refining Company's oil lease more particularly described in
     that certain Assignment of Oil and Gas Lease dated July 27, 1931, by and
     between, W. L. Pickens, Assignor, and Cranfill-Reynolds Company, Assignee,
     as recorded in Volume 93, page 527, Deed Records, Gregg County, said 24.405
     acres being more particularly described as follows:

     BEGINNING at a point 368.5 feet South and 210.08 feet West of the most
     Southerly Southeast corner of the T. B. Harris-Atlantic Refining Company
     oil lease, said point being 26 feet North of the center line of Old Highway
     80;

     THENCE: N. 89 deg. 16' W., 50.0 feet along and with the Atlantic Refining
     Company's Amended Surface Lease dated August 4, 1975, recorded in Volume
     989, page 97, Deed Records, Gregg County, Texas, amending the original
     Surface Lease dated July 24, 1940, recorded in Volume 252, pages 243-249,
     Deed Records, Gregg County, Texas, being "Said Surface Lease" reference is
     hereby made for the purpose of all legal descriptions, to a 3/8" iron rod
     for corner;

     THENCE: Along and with the West ROW line of an existing oil road the
     following bearings and distances; N. 8 deg. 59' W., 217.4 feet, N. 18 deg.
     49' W, 87.4 feet; N. 38 deg. 10' W., 117.30 feet; N. 41 deg. 13' W., 102.7
     feet, N. 32 deg. 02' W., 58.4 feet, and N. 22 deg. 17' W., 56.00 feet to a
     3/8" iron rod in same for corner;

     THENCE: N. 85 deg. 45' W., 414.6 feet to a 3/8" iron rod for corner;

     THENCE: S. 2 deg. 13' E., 591.0 feet to a 3/8" iron rod 26 feet North of
     the center line of Old Highway 80 for corner;

     THENCE: N. 89 deg. 16' W., 608.9 feet along and with said Atlantic Refining
     Company's Said Surface Lease, as amended, 26 feet North of the center line
     of Old Highway 80 to a 3/8" iron rod for corner; said point being the SW
     corner of Said Surface Lease, as amended;

     THENCE: Along and with the WBL of Said Surface Lease, as amended, the
     following bearings and distances; N. 2 deg. 09' W., 468.0 feet, N. 34 deg.
     28' W., 418.0 feet and N. 3 deg. 51' W., 225.8 feet to a point in the same
     for corner;

     THENCE: S. 86 deg. 42' E., 234.90 feet to a 3/8" iron rod for corner, said
     iron rod being 15.0 feet West of a fence corner post;

     THENCE: N. 3 deg. 28' E., 242.0 feet, 15.0 feet West and parallel to a
     chain link fence line to a 3/8" iron rod for corner, said iron rod being
     15.0 feet West and 15.0 feet North of a fence corner post;

     THENCE: S. 86 deg. 38' E., 586.0 feet, 15.0 feet from and parallel to an
     existing chain link fence line to a 3/8" iron rod for corner;

     THENCE: S. 43 deg. 06' E., 594.2 feet and S. 18 deg. 20' E., 240.2 feet to
     a 3/8" iron rod in the East ROW line of an existing oil road for corner;

     THENCE: Along and with the East ROW line of said road the following
     bearings and distances S. 22 deg. 13' E., 50.0 feet, S. 32 deg. 04' E.,
     50.0 feet, S. 41 deg. 18' E., 100.0 feet, S. 38 deg. 07' E., 127.2 feet, S.
     18 deg. 46' E., 100.2 feet and S. 8 deg. 48' E., 230.0 feet to PLACE OF
     BEGINNING, containing 24.405 acres of land, more or less.
<PAGE>   27
                                   EXHIBIT "A"

 ATTACHED TO AND MADE A PART OF THAT CERTAIN PURCHASE AND SALE AGREEMENT DATED
   EFFECTIVE AS OF OCTOBER 1, 1999, BY AND BETWEEN ATLANTIC RICHFIELD COMPANY
              (ARCO) AND FUTURE ACQUISITION 1995, LTD. (PURCHASER)

 IN ADDITION TO ANY OTHER DEPTH LIMITATIONS EXPRESSED HEREIN, IT IS THE EXPRESS
   INTENTION TO LIMIT THE DESCRIPTIONS OF ARCO'S INTEREST (IF ANY), FROM THE
          SURFACE DOWN TO THE BASE OF THE DEEPEST PRODUCING FORMATION


GREGG COUNTY
<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-000049-001      A. A. King and wife,    J. R. Stebbins         10-15-30    62        65
A. A. King "A"  (s)                                Lottie King
414536400
100% WI
87.500% NRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-000049-001     290 acres more or less out of the   AR-105265-000
A. A. King "A"  (s)                               N. E. corner of the P. W.           Purchase and Sale Agreement dated October 6,
414536400                                         Warraner Survey on the S. bank of   1995 by and between East Texas Gathering
100% WI                                           the Sabine River, Gregg County,     Company, Atlantic Richfield Company, Sun Pipe
87.500% NRI                                       Texas, and more particularly        Line Company and Sun Company, Inc. (s)
                                                  described in that certain Oil and
                                                  Gas Lease dated October 15, 1930,   AR-105265-001
                                                  recorded in Volume 62, Page 65,     Crude Oil Buy/Sell Contract dated effective
                                                  Deed Records, Gregg County, Texas.  December 1, 1995 by and between ARCO Permian
                                                                                      and Sun Company, Inc. (s)

                                                                                      AR-23556
                                                                                      Oil Well Gas Contract dated July 3, 1962, by
                                                                                      and between The Atlantic Refining Company,
                                                                                      Seller and Sinclair Oil & Gas Company, Buyer

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 1 of 165
<PAGE>   28

<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-000041-001      A. A. King and wife,    J. R. Stebbins         10-15-30    61        220
A. A. King "B"  (s)                                Lottie King, and S.
414537200                                          G. Andrews and wife,
100% WI                                            Myrtle Andrews
87.50% NRI

A. A. King "D" (s)
414538100
100% WI                     42-183-090518-000      Viola King Kinsey, et   Atlantic Richfield     2-1-89         ----      ----
87.5% NRI                   (Surface Lease for     al                      Company
                            A. A. King "B")


- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-000042-001      A. A. King and wife,    J. R. Stebbins         10-15-30    62        63
A. A. King "C"  (s)                                Lottie King
414539900
100% WI
87.5% NRI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-000041-001     Five tracts of land situated in     Texas Natural Resources Conservation
A. A. King "B"  (s)                               Gregg County, Texas, consisting     Commission Agreed Order (Docket 97-0448-SIP)
414537200                                         of 815 acres more or less, and      dated July 9, 1997. (s/d)
100% WI                                           more particularly described in
87.50% NRI                                        that certain Oil and Gas Lease      AR-105265-000
                                                  dated October 15, 1930, recorded    Purchase and Sale Agreement dated October 6,
A. A. King "D" (s)                                in Volume 61, Page 220, Deed        1995 by and between East Texas Gathering
414538100                                         Records, Gregg County, Texas.       Company, Atlantic Richfield Company, Sun Pipe
100% WI                     42-183-090518-000                                         Line Company and Sun Company, Inc. (s)
87.5% NRI                   (Surface Lease for    .5 acres of land out of the Alex
                            A. A. King "B")       Carmack Survey, Gregg County,       AR-105265-001
                                                  Texas, as more particularly         Crude Oil Buy/Sell Contract dated effective
                                                  described in that certain           December 1, 1995 by and between ARCO Permian
                                                  unrecorded Surface Lease dated      and Sun Company, Inc. (s)
                                                  February 1, 1989.
                                                                                      AR-23556
                                                                                      Oil Well Gas Contract dated July 3, 1962, by
                                                                                      and between The Atlantic Refining Company,
                                                                                      Seller and Sinclair Oil & Gas Company, Buyer
                                                                                      (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ

- -------------------------- --------------------- ----------------------------------- -----------------------------------------------
East Texas Field            42-183-000042-001     A tract of land containing 127      AR-105265-000
A. A. King "C"  (s)                               acres more or less out of Survey    Purchase and Sale Agreement dated October 6,
414539900                                         known as No. 2 E. H. Angell S.      1995 by and between East Texas Gathering
100% WI                                           F., Gregg County, Texas, and more   Company, Atlantic Richfield Company, Sun Pipe
87.5% NRI                                         particularly described by  metes    Line Company and Sun Company, Inc. (s)
                                                  and bounds in Oil and Gas Lease
                                                  dated October 15, 1930, A. A.       AR-105265-001
                                                  King, et ux, Lessor, and J. R.      Crude Oil Buy/Sell Contract dated effective
                                                  Stebbins, Lessee, recorded in       December 1, 1995 by and between ARCO Permian
                                                  Volume 62, Page 63, Lease           and Sun Company, Inc. (s)
                                                  Records, Gregg County, Texas.
                                                                                      AR-23556
                                                                                      Oil Well Gas Contract dated July 3, 1962, by
                                                                                      and between The Atlantic Refining Company,
                                                                                      Seller and Sinclair Oil & Gas Company, Buyer
                                                                                      (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>

                                 Page 2 of 165

<PAGE>   29


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-004416-000      G. E. Adams, et ux      Carl B. Everett        1-1-31      64        247
Adams (s)                                          Mary Barton Adams
412025600
100% WI
87.5% NRI

White Oak Field
(Cotton Valley)             (Surface Lease)        G. E. Adams, et ux      Atlantic Oil           7-13-36        ----     -----
P. C. Castleberry Gas                              Mary Barton Adams       Producing Co.
Unit (d)
414681600
1.61169% ORRI

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-000813-000      S. A. Cochran           Argo Royalty Company   5-2-31      83        357
Alf Jones (187446,846)      (Mineral Deed)
410702100
1.3761% RI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-004416-000     A tract of land out of the Henry    AR-95702
Adams (s)                                         Hathaway Survey, Gregg County,      Farmout Agreement dated February 13, 1990 by
412025600                                         Texas, and more particularly        and between Atlantic Richfield Company, and C
100% WI                                           described in that certain Oil and   W Resources, Inc. (d)
87.5% NRI                                         Gas Lease dated January 1, 1931,
                                                  recorded in Volume 64, Page 247,    AR-95702-008
White Oak Field                                   Gregg County, Texas.                Declaration of Unitization and Designation of
(Cotton Valley)             (Surface Lease)                                           Gas Unit dated effective February 5, 1996 by
P. C. Castleberry Gas                             A tract of land containing 11.0     and between Atlantic Richfield Company and C
Unit (d)                                          acres out of the Henry Hathaway     W Resources, Inc. (d)
414681600                                         Survey, Gregg County, Texas, as
1.61169% ORRI                                     more particularly described in      Private Radio License from Federal
                                                  that certain unrecorded Surface     Communications Commission to ARCO
                                                  Lease dated July 13, 1936.          Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ

- --------------------------- --------------------- ----------------------------------- ---------------------------------------------
East Texas Field            42-183-000813-000     A tract of land out of the G. W.    Oil and Gas Lease dated December 25, 1930,
Alf Jones (187446,846)      (Mineral Deed)        Hooper Survey A-92, Gregg County,   recorded in Volume 64, Page 47, Deed Records,
410702100                                         Texas, containing 63.84 acres       Gregg County, Texas.
1.3761% RI                                        more or less, called 54.52 acres,
                                                  and more particularly described     AR-105435-001
                                                  by metes and bounds in that         Declaration of Unitization and Designation of
                                                  certain Mineral Deed dated May 2,   Gas Unit dated effective November 1, 1995,
                                                  1931, recorded in Volume 83, Page   between Wagner & Brown, et al and Madera
                                                  357, Deed Records, Gregg County,    Production Company. (d)
                                                  Texas.

</TABLE>


                                 Page 3 of 165

<PAGE>   30


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-004034-000      Wm. Anderson et ux      B. P. Seay             9-10-30     59        570
Anderson (Oryx)  (s)                               Ella V. Anderson
412095701
50.0% WI
43.75% NRI

White Oak Field
(Cotton Valley)
W. M. Anderson (d)
410005100
6.25% ORRI

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
Willow Springs Field        42-183-007594-000      G. E. Fenton and        B. A. Skipper          4-25-30     4         384
(Cotton Valley)                                    wife, Pollick Fenton
Annie Fenton No. 1  (d)
435322600
2.12186% ORRI

Willow Springs Field
(Travis Peak West)          42-183-004947-000      J. R. Fenton, et ux     B. A. Skipper          4-25-30     4         351
Annie Fenton Unit #1 Well
(d)
437025200
3.04889% ORRI BPO-Oil
2.84793% ORRI BPO-Gas
4.26844% ORRI APO-Oil
               or
5.33555% WI APO-Oil and
4.66860% NRI APO-Oil

4.17467% ORRI APO-Gas
              or
5.68720% WI APO-Gas and
4.9763% NRI APO-Gas


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-004034-000     A tract of land out of the P.       AR-105265-001
Anderson (Oryx)  (s)                              McAnelly Survey A-267 and John      Crude Oil Buy/Sell Contract dated effective
412095701                                         Ruddle Survey A-176, Gregg          December 1, 1995 by and between ARCO Permian
50.0% WI                                          County, Texas, being 83.27 acres    and Sun Company, Inc. (s)
43.75% NRI                                        more or less, but called 81 acres
                                                  more or less, and more              AR-105265-000
White Oak Field                                   particularly described in that      Purchase and Sale Agreement dated October 6,
(Cotton Valley)                                   certain Oil and Gas Lease dated     1995 by and between East Texas Gathering
W. M. Anderson (d)                                September 10, 1930,  recorded in    Company, Atlantic Richfield Company, Sun Pipe
410005100                                         Volume 59, Page 570, Deed           Line Company and Sun Company, Inc.  (s)
6.25% ORRI                                        Records, Gregg County, Texas.
                                                                                      AR-105473
                                                                                      Farmout Agreement dated effective February 1,
                                                                                      1996 by and between Atlantic Richfield
                                                                                      Company, Wagner & Brown, Ltd., and C W
                                                                                      Resources, Inc.  (d)

                                                                                      PD-2110
                                                                                      Joint Operating Agreement dated November 10,
                                                                                      1931 by and between Sun Oil Company and
                                                                                      Cranfill-Reynolds Company.  (s/d)

                                                                                      AR-98412
                                                                                      Longview Gas Plant Gas Purchase Contract
                                                                                      dated January 1, 1997, by and between ARCO
                                                                                      Permian, seller and ARCO Permian, buyer, as
                                                                                      amended effective August 1, 1998 (s)

- --------------------------- --------------------- ----------------------------------- ----------------------------------------------
Willow Springs Field        42-183-007594-000     A tract of land out of the          AR-101544
(Cotton Valley)                                   Dolores Sanches Survey A-186,       Farmout Agreement dated November 25, 1992
Annie Fenton No. 1  (d)                           Gregg County, Texas, and being      between Atlantic Richfield Company and Cotton
435322600                                         more particularly described in      Valley Productions, Inc. (d)
2.12186% ORRI                                     that certain Oil and Gas Lease
                                                  dated April 25, 1930, recorded in   AR-080830
Willow Springs Field                              Volume 4, Page 384, Deed Records,   Farmout Agreement dated December 5, 1985,
(Travis Peak West)          42-183-004947-000     Gregg County, Texas.                between Atlantic Richfield Company and Cotton
Annie Fenton Unit #1 Well                                                             Valley Productions, Inc.  (d)
(d)                                               A tract of land out of the
437025200                                         Delores Sanches Survey, Gregg       AR-81381
3.04889% ORRI BPO-Oil                             County, Texas, containing 64        Longview Gas Plant Oil Well Gas Purchase
2.84793% ORRI BPO-Gas                             acres, being more particularly      Contract dated July 24, 1996, by and between
4.26844% ORRI APO-Oil                             described in that certain Oil and   ARCO Permian, seller and ARCO Permian, buyer,
               or                                 Gas Lease dated April 25, 1930,     as amended effective August 13, 1998. (s)
5.33555% WI APO-Oil and                           recorded in Volume 4, Page 351,
4.66860% NRI APO-Oil                              Deed Records, Gregg County, Texas.

4.17467% ORRI APO-Gas
              or
5.68720% WI APO-Gas and
4.9763% NRI APO-Gas
</TABLE>


                                 Page 4 of 165

<PAGE>   31



<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Glenwood Field              42-183-004023-000      Allen Tooke, et ux,     Ardis O. Phillips      10-7-30     4         501
(Cotton Valley)                                    et al
ARCO Tooke  (d)
410552400
12.5% RI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
Glenwood Field              42-183-004023-000     40 acres more or less out of the    AR-105473
(Cotton Valley)                                   Wakeland Survey, A-218, Gregg       Farmout Agreement dated effective February 1,
ARCO Tooke  (d)                                   County, Texas, and being more       1996 by and between Atlantic Richfield
410552400                                         fully described in that certain     Company, Wagner & Brown, Ltd., and C W
12.5% RI                                          Oil and Gas Lease dated October     Resources, Inc.  (d)
                                                  7, 1930, recorded in Volume 4,
                                                  Page 501, Deed Records, Gregg       AR-101621
                                                  County, Texas, insofar as lease     Purchase and Sale Agreement dated effective
                                                  covers rights below the base of     January 1, 1993, from Atlantic Richfield
                                                  the Woodbine Formation              Company to Madera Production Company. (s)

                                                                                      AR-105265-000
                                                                                      Purchase and Sale Agreement dated October 6,
                                                                                      1995 by and between East Texas Gathering
                                                                                      Company, Atlantic Richfield Company, Sun Pipe
                                                                                      Line Company and Sun Company, Inc.  (s)

                                                                                      AR-105265-001
                                                                                      Crude Oil Buy/Sell Contract dated effective
                                                                                      December 1, 1995 by and between ARCO Permian
                                                                                      and Sun Company, Inc. (s)

</TABLE>



                                 Page 5 of 165

<PAGE>   32


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
White Oak Field             42-183-004950-000      Arthur Christian et     B. A. Skipper          4-28-30     4         322
(Cotton Valley Sand)                               ux, Elizabeth, et al
J. D. Davis "E" Gas Unit
#5 (d)
410325401
0.247940% ORRI BPO
0.595055% WI  APO
0.520673% NRI APO

J. D. Davis "E" Gas Unit
#4  (d)
410325400
0.247940% ORRI BPO
0.595055% WI  APO
0.520673% NRI APO

Willow Springs Field
(Cotton Valley )
Davis Gas Unit "E" #2 and
#3 (d)
413452400
0.247940% ORRI BPO
0.595055% WI  APO
0.520673% NRI APO

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
White Oak Field             42-183-004950-000     31 acres out of the Henry           AR-105832
(Cotton Valley Sand)                              Hathaway Survey, Gregg County,      Partial Assignment of Operating Rights and
J. D. Davis "E" Gas Unit                          Texas, being the North 31 acres     Bill of Sale dated effective February 1, 1998
#5 (d)                                            of the South 62 acres of land       between Atlantic Richfield Company, and Live
410325401                                         more particularly described  in     Oak Petroleum, Inc.  (s)
0.247940% ORRI BPO                                that certain Oil and Gas Lease
0.595055% WI  APO                                 recorded in Volume 4, Page 322,     AR-105265-001
0.520673% NRI APO                                 Oil and Gas Lease Records, Gregg    Crude Oil Buy/Sell Contract dated effective
                                                  County, Texas, only insofar as      December 1, 1995 by and between ARCO Permian
J. D. Davis "E" Gas Unit                          lease covers rights below the       and Sun Company, Inc. (s)
#4  (d)                                           Base of the Woodbine formation
410325400                                                                             AR-104971
0.247940% ORRI BPO                                                                    Unit Operating Agreement dated effective
0.595055% WI  APO                                                                     October 24, 1956, Oxy USA, Inc., Operator.
0.520673% NRI APO                                                                     (d)

Willow Springs Field                                                                  AR-104971-001
(Cotton Valley )                                                                      Declaration of Unitization of Gas Unit dated
Davis Gas Unit "E" #2 and                                                             June 18, 1958.  (d)
#3 (d)
413452400                                                                             PD-3520
0.247940% ORRI BPO                                                                    Contract of Purchase and Operating Agreement
0.595055% WI  APO                                                                     dated January 24, 1931, as amended August 11,
0.520673% NRI APO                                                                     1949 between the Atlantic Refining Company as
                                                                                      Operator and Magnolia Petroleum Company, et
                                                                                      al, as Non-Operators.  (s)

                                                                                      AR-95702
                                                                                      Farmout Agreement dated February 13, 1990 by
                                                                                      and between Atlantic Richfield Company, and C
                                                                                      W Resources, Inc.  (d)

</TABLE>


                                 Page 6 of 165
<PAGE>   33


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003989-000      Joe Bander et ux, Exa   J. K. Wadley           1-14-31     152       66
Bander  (s)                                        Bander
412205499
93.7656% WI
82.0491% NRI

Glenwood Field
(Cotton Valley)
T. W. Lee Gas Unit #1 (d)
415131300
9.10804% ORRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003989-000     A part of the David Ferguson H.     AR-95702
Bander  (s)                                       R. Survey, Gregg County, Texas,     Farmout Agreement dated February 13, 1990 by
412205499                                         containing 85 acres more or less,   and between Atlantic Richfield Company, and C
93.7656% WI                                       and more particularly described     W Resources, Inc. (d)
82.0491% NRI                                      in that certain Oil & Gas Lease
                                                  dated January 14, 1931, recorded    PD-2062
Glenwood Field                                    Volume 152, Page 66, Deed           Operating Agreement dated December 21, 1931
(Cotton Valley)                                   Records, Gregg County, Texas.       by and between Atlantic Oil Producing
T. W. Lee Gas Unit #1 (d)                                                             Company, Operator, and J. K. Wadley,
415131300                                                                             Non-Operator. (s/d)
9.10804% ORRI
                                                                                      AR-105265-001
                                                                                      Crude Oil Buy/Sell Contract dated effective
                                                                                      December 1, 1995 by and between ARCO Permian
                                                                                      and Sun Company, Inc. (s)

                                                                                      AR-105265-000
                                                                                      Purchase and Sale Agreement dated October 6,
                                                                                      1995 by and between East Texas Gathering
                                                                                      Company, Atlantic Richfield Company, Sun Pipe
                                                                                      Line Company and Sun Company, Inc. (s)

                                                                                      AR-105473
                                                                                      Farmout Agreement dated effective February 1,
                                                                                      1996 by and between Atlantic Richfield
                                                                                      Company, Wagner & Brown, Ltd., and C W
                                                                                      Resources, Inc. (d)

                                                                                      AR-94444
                                                                                      Purchase and Sale Agreement dated effective
                                                                                      October 1, 1991 by and between The Sinclair
                                                                                      Revocable Trust, The Fernald Point Production
                                                                                      Trust, and Atlantic Richfield Company. (s/d)

                                                                                      AR-81381
                                                                                      Longview Gas Plant Oil Well Gas Purchase
                                                                                      Contract dated July 24, 1996, by and between
                                                                                      ARCO Permian, seller and ARCO Permian, buyer,
                                                                                      as amended effective August 13, 1998. (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 7 of 165

<PAGE>   34


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-004035-000      R. C. Barnswell         B. P. Seay             9-13-30     4         410
Barnswell B&C  (s)
(Oryx)
412220801
50% WI
43.75% NRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-004035-000     A tract of land out of the          PD-2110
Barnswell B&C  (s)                                McAnelly Survey, Gregg County,      Joint Operating Agreement dated November 10,
(Oryx)                                            Texas, and more particularly        1931 by and between Sun Oil Company and
412220801                                         described in that certain Oil and   Cranfill-Reynolds Company.  (s/d)
50% WI                                            Gas Lease dated September 13,
43.75% NRI                                        1930 recorded in Volume 4, Page     AR-98412
                                                  410, Deed Records, Gregg County,    Longview Gas Plant Gas Purchase Contract
                                                  Texas.                              dated January 1, 1997, by and between ARCO
                                                                                      Permian, seller and ARCO Permian, buyer, as
                                                                                      amended effective August 1, 1998 (s)

                                                                                      AR-64468
                                                                                      Saltwater Disposal Agreement dated October 1,
                                                                                      1975 between ARCO Oil and Gas Company and
                                                                                      East Texas Salt Water Disposal Company.  (s)

</TABLE>


                                 Page 8 of 165

<PAGE>   35

<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003979-000      W. T. Burnside, et al   A. O. Phillips         9-19-30     4         493
Burnside "A"  (s)
412640800
100% WI
87.5003% NRI

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-000817-000      H. W. McKinley          Argo Royalty Company   6-6-31      94        17
Clem Jones (465905)         (Mineral Deed)
410703900
4.6875% RI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003979-000     166 acres more or less out of the   AR-105265-001
Burnside "A"  (s)                                 H. R. Survey of Francis W.          Crude Oil Buy/Sell Contract dated effective
412640800                                         Johnson, Gregg County, Texas, and   December 1, 1995 by and between ARCO Permian
100% WI                                           more particularly described by      and Sun Company, Inc. (s)
87.5003% NRI                                      metes and bounds in that certain
                                                  Assignment dated January 27,        AR-105265-000
                                                  1933, from Rio Oil Corporation to   Purchase and Sale Agreement dated October 6,
                                                  Atlantic Oil Producing Company,     1995 by and between East Texas Gathering
                                                  recorded in Book 141, Page 482,     Company, Atlantic Richfield Company, Sun Pipe
                                                  Deed Records of Gregg County,       Line Company and Sun Company, Inc. (s)
                                                  Texas
                                                                                      AR-98412
                                                                                      Longview Gas Plant Gas Purchase Contract
                                                                                      dated January 1, 1997, by and between ARCO
                                                                                      Permian, seller and ARCO Permian, buyer, as
                                                                                      amended effective August 1, 1998 (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ

- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-000817-000     A tract of land out of the G. W.    Oil and Gas Lease dated December 25, 1930,
Clem Jones (465905)         (Mineral Deed)        Hooper Survey, Gregg County,        recorded in Volume 64, Page 45, Deed Records,
410703900                                         Texas, containing 65 acres, more    Gregg County, Texas.
4.6875% RI                                        or less, more particularly
                                                  described in that certain Mineral   AR-105435-001
                                                  Deed dated June 6, 1931, recorded   Declaration of Unitization and Designation of
                                                  in Volume 94, Page 17, Deed         Gas Unit dated effective November 1, 1995,
                                                  Records, Gregg County, Texas.       between Wagner & Brown, et al and Madera
                                                                                      Production Company
</TABLE>


                                 Page 9 of 165

<PAGE>   36


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Willow Springs Field        42-183-003909-000      J. J. Fuller            Mamie S. Hammonds      9-22-30     4         211
(Cotton Valley West)
Clemens Gas  Unit #1
435321800
3.278776% ORRI

Willow Springs Field
(Cotton Valley West)
Clemens #3
414145800                   42-183-004943-00A      Dovie I. Collins,       J. K. Wadley           1-19-31     78        26
3.278776% ORRI                                     et vir








                            42-183-004943-00B      Dovie I. Collins,       J. K. Wadley           6-12-31     88        542
                                                   Guardian








                            42-183-004943-00C      Dovie I. Collins,       J. K. Wadley           1-24-31     Entry #   7678
                                                   Guardian







                            42-183-004941-000      J. E. Sheffield         L. L. Edens            12-30-30    64        83

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>

Willow Springs Field        42-183-003909-000     A tract of land out of the M. A.    AR-101543
(Cotton Valley West)                              Alexander H.R. and M. Irwin         Farmout Agreement dated November 24, 1992 by
Clemens Gas  Unit #1                              Surveys, Gregg County, Texas,       and between Atlantic Richfield Company and R.
435321800                                         containing 106.4 acres more or      Byron Roach.   (d)
3.278776% ORRI                                    less, and more particularly
                                                  described in that certain Oil and   AR-101664-001
Willow Springs Field                              Gas Lease dated September 22,       Declaration of Gas Pooled Unit, R. Byron
(Cotton Valley West)                              1930, recorded in Volume 4, Page    Roach, Trustee, Clemens Cotton Valley Gas
Clemens #3                                        211, Deed Records, Gregg County,    Unit No. 1 dated May 24, 1993, recorded in
414145800                                         Texas.                              Volume 2512, Page 381, Deed Records, Gregg
3.278776% ORRI                                                                        County, Texas.
                            42-183-004943-00A     Two tracts of land out of the
                                                  Dolores Sanchez Survey, Gregg       PD-3519
                                                  County, Texas, containing 120       Contract of Purchase and Operating Agreement,
                                                  acres more or less, and more        dated April 25, 1931 by and between J. K.
                                                  particularly described in that      Wadley, et al, and Roeser & Pendleton, Inc.
                                                  certain Oil and Gas Lease dated
                                                  January 19, 1931, recorded in       AR-81381
                                                  Volume 78, Page 26, Gregg County,   Longview Gas Plant Oil Well Gas Purchase
                                                  Texas.                              Contract dated July 24, 1996, by and between
                                                                                      ARCO Permian, seller and ARCO Permian, buyer,
                            42-183-004943-00B     Two tracts of land out of the       as amended effective August 13, 1998. (s)
                                                  Dolores Sanchez Survey, Gregg
                                                  County, Texas, containing 120
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  June 12, 1931, recorded in Volume
                                                  88, Page 542, Gregg County, Texas.

                            42-183-004943-00C     Two tracts of land out of the
                                                  Dolores Sanchez Survey, Gregg
                                                  County, Texas, containing 120
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  January 24, 1931, recorded in
                                                  Entry No. 7678, Deed Records,
                                                  Gregg County, Texas.

                            42-183-004941-000     A tract of land out of the
                                                  Dolores Sanchez Survey, Gregg
                                                  County, Texas, containing 50
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  December 30, 1930, recorded in
                                                  Volume 64, Page 83, Deed Records,
                                                  Gregg County, Texas.
</TABLE>

                                 Page 10 of 165
<PAGE>   37


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Willow Springs Field        42-183-005874-000      R. R. Collins, et ux    J. M. Wood             12-13-31    68        102
(Cotton Valley West)
Clemens Gas  Unit #1
435321800

Willow Springs Field
(Cotton Valley West)
Clemens #3
414145800
(continued)                 42-183-004415-000      J. J. Reppond, et ux    D. H. Byrd             1-24-31     65        285







                            42-183-003987-00A      C. C. Clemens, et al    Max Kirk               5-15-31     Entry #   17309







                            42-183-003987-00B      C. C. Clemens,          Max Kirk               5-27-31     Entry #   17308
                                                   Guardian

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-000820-000      H. H. Brooks            Argo Royalty Company   1-23-45     286       427
Cole (650002, etc.)         (Mineral Deed)
410506100
 .1953% RI

East Texas Field
M. T. Cole
417163200
 .1953% RI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
Willow Springs Field        42-183-005874-000     A tract of land out of the
(Cotton Valley West)                              Dolores Sanchez Survey, Gregg
Clemens Gas  Unit #1                              County, Texas, containing 55
435321800                                         acres more or less, and more
                                                  particularly described in that
Willow Springs Field                              certain Oil and Gas Lease dated
(Cotton Valley West)                              December 13, 1931, recorded in
Clemens #3                                        Volume 68, Page 102, Deed
414145800                                         Records, Gregg County, Texas.
(continued)

                            42-183-004415-000     A tract of land out of the
                                                  Dolores Sanchez Survey, Gregg
                                                  County, Texas, containing 50
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  January 24, 1931, recorded in
                                                  Volume 65, Page 285, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003987-00A     A tract of land out of the
                                                  Dolores Sanchez Survey, Gregg
                                                  County, Texas, containing 63.96
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  May 15, 1931, recorded in Entry
                                                  No. 17309, Deed Records, Gregg
                                                  County, Texas.

                            42-183-003987-00B     A tract of land out of the
                                                  Dolores Sanchez Survey, Gregg
                                                  County, Texas, containing 63.96
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  May 27, 1931, recorded in Entry
                                                  No. 17308, Deed Records, Gregg
                                                  County, Texas.

- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-000820-000     A tract of land out of the E. L.
Cole (650002, etc.)         (Mineral Deed)        Walker Survey containing 192
410506100                                         acres more or less in Gregg
 .1953% RI                                         County, Texas, and more
                                                  particularly described in that
East Texas Field                                  certain Deed dated January 23,
M. T. Cole                                        1945, recorded in Volume 286,
417163200                                         Page 427, Deed Records, Gregg
 .1953% RI                                         County, Texas.
</TABLE>


                                 Page 11 of 165
<PAGE>   38

<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
White Oak Field             42-183-004033-000      D. A. Porter, et ux     W. F. Glenn            1-15-31     6         48
(Cotton Valley)
D. A. Porter Gas Unit  (d)
410345900
8.197619% ORRI BPO
19.674285% WI APO
17.214999% NRI APO

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-000034-000      C. H. Brown and         Atlantic Oil           8-10-36     203       490
Dora Johnson (s/d)          (Mineral Deed)         Margaret Brown, his     Producing Company
414415500                                          wife, et al
1.5 Net Acres
1.5 Gross Acres


Willow Springs Field
(Cotton Valley
T. B. Harris Gas Unit)
437459200
 .000597% RI
3.180539% ORRI
7.63317% WI  APO
6.67903% NRI  APO


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
White Oak Field             42-183-004033-000     A tract of land out of the G. W.    AR-95702-006
(Cotton Valley)                                   Hooper Survey, A-657, Upshur        Declaration of Unitization and Designation of
D. A. Porter Gas Unit  (d)                        County, Texas and G. W. Hooper      Gas Unit effective June 16, 1994. (d)
410345900                                         Survey, A-92, Gregg County,
8.197619% ORRI BPO                                Texas, containing 109.33 acres      AR-95702
19.674285% WI APO                                 more or less, and more              Farmout Agreement dated February 13, 1990 by
17.214999% NRI APO                                particularly described  by metes    and between Atlantic Richfield Company and C
                                                  and bounds in that certain Oil,     W Resources, Inc. (d)
                                                  Gas and Mineral Lease dated
                                                  January 15, 1931, recorded in       AR-101621
                                                  Volume 6, Page 48, Lease Records,   Purchase and Sale Agreement dated effective
                                                  Upshur County, Texas.               January 1, 1993, from Atlantic Richfield
                                                                                      Company to Madera Production Company. (s)
                                                  Only insofar as leases cover
                                                  rights below the Base of the
                                                  Woodbine formation.

- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-000034-000     1.5 acres more or less out of the   Oil and Gas Lease dated effective November 1,
Dora Johnson (s/d)          (Mineral Deed)        G. W. Hooper Survey, A-92, Gregg    1995 between Atlantic Richfield Company and
414415500                                         County, Texas, and more             Wagner & Brown, Ltd., as recorded in Volume
1.5 Net Acres                                     particularly described by metes     3041, Page 31, Deed Records of Gregg County,
1.5 Gross Acres                                   and bounds in Deed dated August     Texas.
                                                  10, 1936 recorded in Volume 203,
                                                  Page 490, Deed Records, Gregg       AR-105435-001
                                                  County, Texas.                      Declaration of Unitization dated effective
                                                                                      November 1, 1995, C W Resources, Inc.,
Willow Springs Field                                                                  Operator. (d)
(Cotton Valley
T. B. Harris Gas Unit)                                                                T. B. Harris Gas Unit
437459200
 .000597% RI
3.180539% ORRI
7.63317% WI  APO
6.67903% NRI  APO
</TABLE>


                                 Page 12 of 165
<PAGE>   39


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003977-000      W. P. Duncan et ux      Rio Oil Corporation    4-14-31     62        395
Duncan  (s)                                        Mary
413275100
100% WI
87.5% NRI


- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-043544-000      E. G. Greene and        Arctic Oil Company     2-9-31      125       629
                                                   wife, Mattie Greene
Elder Oil Unit #3 (s)
416021500
 .6175% ORRI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003977-000     Being a part of the David           AR-105265-000
Duncan  (s)                                       Ferguson Survey, Gregg County,      Purchase and Sale Agreement dated October 6,
413275100                                         Texas, and more particularly        1995 by and between East Texas Gathering
100% WI                                           described in Oil, Gas & Mineral     Company, Atlantic Richfield Company, Sun Pipe
87.5% NRI                                         Lease dated April 14, 1931,         Line Company and Sun Company, Inc. (s)
                                                  recorded in Volume 62, Page 395
                                                  Deed Records, Gregg County, Texas.  AR-105265-001
                                                                                      Crude Oil Buy/Sell Contract dated effective
                                                                                      December 1, 1995 by and between ARCO Permian
                                                                                      and Sun Company, Inc. (s)

                                                                                      AR-81381
                                                                                      Longview Gas Plant Oil Well Gas Purchase
                                                                                      Contract dated July 24, 1996, by and between
                                                                                      ARCO Permian, seller and ARCO Permian, buyer,
                                                                                      as amended effective August 13, 1998. (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ

- --------------------------  --------------------  ----------------------------------  ----------------------------------------------

East Texas Field            42-183-043544-000     Part of the Mary Van Winkle         AR-101580
                                                  Survey A-208, Gregg County,         Like-Kind Exchange Agreement dated June 1,
Elder Oil Unit #3 (s)                             Texas, and more particularly        1992 by and between Atlantic Richfield
416021500                                         described in that certain Oil and   Company and Conoco, Inc. (s/d)
 .6175% ORRI                                       Gas Lease dated February 9,
                                                  1931,  recorded in Volume 125,      AR-101558
                                                  Page 629, Deed Records, Gregg       Farmout Agreement dated April 23, 1992
                                                  County, Texas.                      between Conoco Inc. and R&C Petroleum, Inc.
                                                                                      (s/d)

                                                                                      Operating Agreement dated April 23, 1992 by
                                                                                      and between Conoco, Inc. and R&C Petroleum,
                                                                                      Inc. (s/d)
</TABLE>


                                 Page 13 of 165

<PAGE>   40


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-004017-00A      S. C. Fishburn and      Tom E. Cranfill and    4-9-31      79        299
Fishburn  (s)                                      wife, Fannette          E. B. Germany
413495800                                          Fishburn
50% WI
43.75% NRI

White Oak Field
(Cotton Valley)
Fishburn #1 Gas Unit  (d)
415689700
2.5832% ORRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-004017-00A     A tract of land out of Block 5 of   AR-98412
Fishburn  (s)                                     the Francis W. Johnson Survey,      Longview Gas Plant Gas Purchase Contract
413495800                                         A-112, Gregg County Texas, and      dated January 1, 1997, by and between ARCO
50% WI                                            more particularly described in      Permian, seller and ARCO Permian, buyer, as
43.75% NRI                                        that certain Oil and Gas Lease      amended effective August 1, 1998 (s)
                                                  dated April 9, 1931 from S. C.
White Oak Field                                   Fishburn and wife, Fannette         AR-104486-000
(Cotton Valley)                                   Fishburn, recorded in Volume 79,    Farmout Agreement dated October 19, 1993,
Fishburn #1 Gas Unit  (d)                         Page 299, Deed Records, Gregg       Gregg County, Texas, between Atlantic
415689700                                         County, Texas.                      Richfield Company and Reserve Management,
2.5832% ORRI                                                                          Inc. (d)

                                                                                      AR-104486-001
                                                                                      Declaration of Unitization & Designation of
                                                                                      Gas Unit dated July 21, 1994 between Atlantic
                                                                                      Richfield Company and Reserve Management,
                                                                                      Inc. (d)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>

                                 Page 14 of 165


<PAGE>   41



<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003988-00A      McBee Fisher            Gaines B. Turner       10-28-19    39        600
Fisher  (s)
413500800
100% WI
87.5% NRI

White Oak Field
(Cotton Valley)  (d)
T. B. Harris Gas Unit #2    42-183-003988-00B      Mrs. Juan Fisher, et    J. F. Lucey            3-9-31      76        114
437459200                                          al
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #3 (d)
437459201
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #5 (d)
437459202
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #4 (d)
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003988-00A     130 acres out of the W. H.          Texas Natural Resources Conservation
Fisher  (s)                                       Castleberry Survey, Gregg County,   Commission Agreed Order (Docket 97-0448-SIP)
413500800                                         Texas, and more particularly        dated July 9, 1997. (d)
100% WI                                           described by metes and bounds in
87.5% NRI                                         that certain Oil and Gas Lease      AR-105265-000
                                                  dated October 28, 1919 recorded     Purchase and Sale Agreement dated October 6,
White Oak Field                                   in Volume 39, Page 600, Deed        1995 by and between East Texas Gathering
(Cotton Valley)  (d)                              Records, Gregg County, Texas.       Company, Atlantic Richfield Company, Sun
T. B. Harris Gas Unit #2                                                              Pipe Line Company and Sun Company, Inc. (s)
437459200                   42-183-003988-00B     130 acres out of the W. H.
 .000597% RI                                       Castleberry Survey, Gregg County,   AR-105265-001
3.180539% ORRI BPO                                Texas, and more particularly        Crude Oil Buy/Sell Contract dated effective
7.63317% WI APO                                   described by metes and bounds in    December 1, 1995 by and between ARCO Permian
6.67902% NRI APO                                  that certain Oil & Gas Lease        and Sun Company, Inc. (s)
                                                  dated March 9, 1931 recorded in
T. B. Harris Gas Unit #3 (d)                      Volume 76, Page 114, Deed           AR-95702
437459201                                         Records, Gregg County, Texas.       Farmout Agreement dated February 13, 1990 by
 .000597% RI                                                                           and between Atlantic Richfield Company, and C
3.180539% ORRI BPO                                                                    W Resources, Inc. (d)
7.63317% WI APO
6.67902% NRI APO                                                                      AR-98412
                                                                                      Longview Gas Plant Gas Purchase Contract
T. B. Harris Gas Unit #5 (d)                                                          dated January 1, 1997, by and between ARCO
437459202                                                                             Permian, seller and ARCO Permian, buyer, as
 .000597% RI                                                                           amended effective August 1, 1998 (s)
3.180539% ORRI BPO
7.63317% WI APO                                                                       AR-18030-001
6.67902% NRI APO                                                                      Declaration of Unit dated December 27, 1957,
                                                                                      C W Resources, Inc., Operator. (d)
T. B. Harris Gas Unit #4 (d)
 .000597% RI                                                                           Private Radio License from Federal
3.180539% ORRI BPO                                                                    Communications Commission to ARCO
7.63317% WI APO                                                                       Communications, Inc., dated December 16,
6.67902% NRI APO                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ

</TABLE>


                                 Page 15 of 165

<PAGE>   42


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-004008-000      H. L. Foster and        G. S. Howard and M.    10-11-30    61        65
Foster "A"  (s)                                    wife, Florence Foster   T. Flanagan
413555500
100%  WI
87.5000% NRI

White Oak
(Cotton Valley Sand)
Allen Tooke Gas Unit #1
(d)
411005600
4.540623% ORRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-004008-000     A tract of land out of the W. G.    AR-95702
Foster "A"  (s)                                   Painter Survey, Gregg County,       Farmout Agreement dated February 13, 1990 by
413555500                                         Texas, and more particularly        and between Atlantic Richfield Company, and C
100%  WI                                          described in that certain Oil and   W Resources, Inc. (d)
87.5000% NRI                                      Gas Lease dated October 11,
                                                  1930,  recorded Volume 61, Page.    AR-34291
White Oak                                         65, Deed Records, Gregg County,     Crude Oil Marketing Internal Contract dated
(Cotton Valley Sand)                              Texas.                              December 1, 1995 by and between East Texas
Allen Tooke Gas Unit #1                                                               Gathering Company, Atlantic Richfield Company
(d)                                                                                   and Sun Company, Inc. (s)
411005600
4.540623% ORRI                                                                        AR-105265-000
                                                                                      Purchase and Sale Agreement dated October 6,
                                                                                      1995 by and between East Texas Gathering
                                                                                      Company, Atlantic Richfield Company, Sun
                                                                                      Pipe Line Company and Sun Company, Inc. (s)

                                                                                      AR-105265-001
                                                                                      Crude Oil Buy/Sell Contract dated effective
                                                                                      December 1, 1995 by and between ARCO Permian
                                                                                      and Sun Company, Inc. (s)

                                                                                      AR-57040
                                                                                      Salt Water Disposal Contract dated March 1,
                                                                                      1978, by and between Atlantic Richfield
                                                                                      Company and East Texas Salt Water Disposal
                                                                                      Company. (s)

                                                                                      AR-95702-007
                                                                                      Declaration of Unitization and Designation of
                                                                                      Gas Unit dated April 4, 1995, C W Resources,
                                                                                      Inc., Operator. (d)

                                                                                      AR-81381
                                                                                      Longview Gas Plant Oil Well Gas Purchase
                                                                                      Contract dated July 24, 1996, by and between
                                                                                      ARCO Permian, seller and ARCO Permian, buyer,
                                                                                      as amended effective August 13, 1998. (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 16 of 165
<PAGE>   43


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-004820-000      Henry L. Foster et ux   J. M. Noble and E.     4-11-31     81        161
Foster "B"  (s)                                    Florence Foster         E. Westervelt
413560100
100% WI
87.5% NRI

White Oak Field
(Cotton Valley Sand)
Allen Tooke Gas Unit #1 (d)
411005600
4.540623% ORRI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-004820-000     A tract of land out  of the W. G.   AR-95702
Foster "B"  (s)                                   Painter Headright Survey, Gregg     Farmout Agreement dated February 13, 1990 by
413560100                                         County, Texas, containing 7.8       and between Atlantic Richfield Company, and C
100% WI                                           acres, and  more particularly       W Resources, Inc. (d)
87.5% NRI                                         described in that certain Oil &
                                                  Gas Lease dated April 11, 1931,     AR-105265-000
White Oak Field                                   recorded in Volume 81, Page 161,    Purchase and Sale Agreement dated October 6,
(Cotton Valley Sand)                              Deed Records, Gregg County, Texas.  1995 by and between East Texas Gathering
Allen Tooke Gas Unit #1 (d)                                                           Company, Atlantic Richfield Company, Sun Pipe
411005600                                                                             Line Company and Sun Company, Inc. (s)
4.540623% ORRI
                                                                                      AR-105265-001
                                                                                      Crude Oil Buy/Sell Contract dated effective
                                                                                      December 1, 1995 by and between ARCO Permian
                                                                                      and Sun Company, Inc. (s)

                                                                                      AR-34291
                                                                                      Crude Oil Marketing Internal Contract dated
                                                                                      December 1, 1995, between East Texas
                                                                                      Gathering Company, Atlantic Richfield Company
                                                                                      and Sun Company, Inc. (s)

                                                                                      Texas Natural Resources Conservation
                                                                                      Commission Agreed Order (Docket No.
                                                                                      97-0448-SIP) dated July 9, 1997. (s/d)

                                                                                      AR-95702-007
                                                                                      Declaration of Unitization and Designation of
                                                                                      Gas Unit dated April 4, 1995, C W Resources,
                                                                                      Inc., Operator. (d)

                                                                                      AR-81381
                                                                                      Longview Gas Plant Oil Well Gas Purchase
                                                                                      Contract dated July 24, 1996, by and between
                                                                                      ARCO Permian, seller and ARCO Permian, buyer,
                                                                                      as amended effective August 13, 1998. (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 17 of 165
<PAGE>   44



<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-043538-000      Mrs. Trip Elder, a      Joe Blalack            5-18-55     458       457
Frank and J S Elder Oil                            widow, et al
Unit
416024000
0.02707% ORRI
0.03093% RI


                                                   Mrs. Camie Elder, a     Joe Blalack            5-18-55     458       462
                                                   widow, et al


- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-043547-000      G. B. Tennery and       B.A. Skipper           5-22-30     4         336
G. B. Tennery  (s)                                 wife Anna Tennery
419501900
83.10% WI
72.7125% NRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>

East Texas Field            42-183-043538-000     A tract of land out of the Wm. J.   AR-101580
Frank and J S Elder Oil                           McCurry Survey and a tract of       Like-Kind Exchange Agreement dated June 1,
Unit                                              land out of the G. H. Tutt          1992 by and between Atlantic Richfield
416024000                                         Survey, all in Gregg County,        Company and Conoco, Inc.  (s/d)
0.02707% ORRI                                     Texas, and more particularly
0.03093% RI                                       described in that certain Oil and
                                                  Gas Lease dated May 18, 1955,
                                                  recorded in Volume 458, Page 457,
                                                  Deed Records, Gregg County, Texas.

                                                  A tract of land out of the Wm. J.
                                                  McCurry Survey and a tract of
                                                  land out of the G. H. Tutt
                                                  Survey, all in Gregg County,
                                                  Texas, and more particularly
                                                  described in that certain Oil and
                                                  Gas Lease dated May 18, 1955,
                                                  recorded in Volume 458, Page 462,
                                                  Deed Records Gregg County, Texas.

- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-043547-000     A tract of land being a part of     AR-101547
G. B. Tennery  (s)                                the William Robinson Survey         Purchase and Sale Agreement dated November
419501900                                         A-177, Gregg County, Texas, and     15, 1982 by and between Conoco, Inc. and
83.10% WI                                         more particularly described in      Petro-Lewis Corporation. (s/d)
72.7125% NRI                                      that certain Oil & Gas Lease
                                                  dated May 22, 1930, recorded        AR-101548
                                                  Volume 4, Page 336, Deed Records,   Joint Operating Agreement dated January 1,
                                                  Gregg County, Texas.                1983 by and between Conoco, Inc. and
                                                                                      Petro-Lewis Corporation. (s/d)

                                                                                      AR-101580
                                                                                      Like-Kind Exchange Agreement dated June 1,
                                                                                      1992 by and between Atlantic Richfield
                                                                                      Company and Conoco, Inc. (s/d)

                                                                                      AR-104933
                                                                                      Declaration of Pooling and Designation of
                                                                                      Unit P. D. Harrison "E-1" Gas Unit, Gregg
                                                                                      County, Texas, dated May 2, 1984 between
                                                                                      Cities Service Oil and Gas Corporation and
                                                                                      Amoco Production Company. (d)

                                                                                      Subject to unnumbered Contract dated April
                                                                                      16, 1959 between Continental Oil Company
                                                                                      (Seller) and the Arkansas Fuel Oil
                                                                                      Corporation (Buyer).

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 18 of 165
<PAGE>   45

<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-000814-000      G. W. Richey et ux      Argo Royalty Company   7-1-38      233       130
G. W. Richey                (Mineral Deed)         Ida Richey
(4007262, 263 & 264)  (s)
410863900
 .7813%  RI

Richey, G. W. (468402)
(R)  (s)
410862100
 .7813% RI

East Texas Field
G. W. Richey SND
412689100
 .78125% RI

GladeWater Field
(Haynesville)
G. W. Richey 1-H  (d)
412525800
 .1738227% RI

Glenwood Field
(Cotton Valley)
G. W. Richey Gas Unit #2 (d)
410689000
 .1738227% RI

Glenwood  Field
(Cotton  Valley)
J. W. Orr Gas Unit
414143100
 .26869% RI

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-043541-000      H. P. Hale, et ux       D. H. Byrd             11-19-30    61        645
H. P. Hale
416025800
 .7031%  ORRI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-000814-000     Two tracts of land out of the       Oil and Gas Lease dated December 31, 1930,
G. W. Richey                (Mineral Deed)        Lewis Rigsby H. R. Survey and one   recorded in Volume 67, Page 1167, Deed
(4007262, 263 & 264)  (s)                         tract of land out of the Wm.        Records, Gregg County, Texas.
410863900                                         Carleton H. R. Survey, Gregg
 .7813%  RI                                        County, Texas, and more
                                                  particularly described in that
Richey, G. W. (468402)                            certain instrument dated July 1,
(R)  (s)                                          1938,  recorded in Volume 233,
410862100                                         Page 130, Deed Records, Gregg
 .7813% RI                                         County, Texas.

East Texas Field
G. W. Richey SND
412689100
 .78125% RI

GladeWater Field
(Haynesville)
G. W. Richey 1-H  (d)
412525800
 .1738227% RI

Glenwood Field
(Cotton Valley)
G. W. Richey Gas Unit #2 (d)
410689000
 .1738227% RI

Glenwood  Field
(Cotton  Valley)
J. W. Orr Gas Unit
414143100
 .26869% RI

- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-043541-000     A tract of land out of the John     AR-101580
H. P. Hale                                        Wilkinson Survey A-224, Gregg       Like-Kind Exchange Agreement dated June 1,
416025800                                         County, Texas, containing 95.50     1992 by and between Atlantic Richfield
 .7031%  ORRI                                      acres more or less, and more        Company and Conoco, Inc.  (s/d)
                                                  particularly described in that
                                                  certain Oil, Gas and Mineral        AR-101550
                                                  Lease dated November 19, 1930,      Operating Agreement dated September 1, 1964,
                                                  recorded Volume 61, Page 645,       Conoco, Inc., Operator
                                                  Deed Records, Gregg County,
                                                  Texas.
</TABLE>


                                 Page 19 of 165

<PAGE>   46

<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-043539-000-001  Buck Harris             Gaines B. Turner,      10-28-19    39        607
Harris (Conoco) 62.5% (s)                                                  Trustee
419499300
51.9375% WI
45.4453% NRI

East Texas Field
Harris (Conoco) 37.5% (s)
419499301
51.9375% WI
45.4453% NRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-043539-000-001 A tract of land out of the Wm.      AR-105265-001
Harris (Conoco) 62.5% (s)                         Castleberry Survey, A-38, Gregg     Crude Oil Buy/Sell Contract dated effective
419499300                                         County, Texas, containing 80.0      December 1, 1995 by and between ARCO Permian
51.9375% WI                                       acres more or less, and more        and Sun Company, Inc. (s)
45.4453% NRI                                      particularly described in that
                                                  certain Oil and Gas Lease dated     AR-105265-000
East Texas Field                                  October 28, 1919, recorded in       Purchase and Sale Agreement dated October 6,
Harris (Conoco) 37.5% (s)                         Volume 39, Page 607, Deed           1995 by and between East Texas Gathering
419499301                                         Records, Gregg County, Texas.       Company, Atlantic Richfield Company, Sun Pipe
51.9375% WI                                                                           Line Company and Sun Company, Inc. (s)
45.4453% NRI
                                                                                      AR-101580
                                                                                      Like-Kind Exchange Agreement dated June 1,
                                                                                      1992 between Conoco Inc. and Atlantic
                                                                                      Richfield Company. (s/d)

                                                                                      AR-101555
                                                                                      Operating Agreement dated January 1, 1959,
                                                                                      wherein Pan American Petroleum Corporation is
                                                                                      Operator.

                                                                                      AR-101554
                                                                                      Operating Agreement dated May 4, 1931,
                                                                                      wherein Conoco Inc. is Operator.

                                                                                      AR-101550
                                                                                      Operating Agreement dated September 1, 1964
                                                                                      wherein Conoco Inc. is Operator. (s)

                                                                                      Subject to unnumbered Contract dated April
                                                                                      16, 1959 between Continental Oil Company
                                                                                      (Seller) and the Arkansas Fuel Oil
                                                                                      Corporation (Buyer).

                                                                                      Declaration of Unit dated February 20, 1959,
                                                                                      Gregg County, Texas (Bob Wood Gas Unit) (d)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 20 of 165
<PAGE>   47


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003982-000      Martin Hays, et ux      B. F. Seay             9-11-30     4         412
Hays A & B  (s)
414060500
78.3510% WI
68.5571% NRI



                            42-183-09003-000       Robert Cargill, Sr.,    Atlantic Refining      11-11-64    663       469
                                                   et al                   Company and Sun Oil
                                                                           Company

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003982-000     All of the W. C. Alvice H. R.       Texas Natural Resource Conservation
Hays A & B  (s)                                   Survey, No. 11, Gregg County,       Commission Agreed Order dated July 9, 1997
414060500                                         Texas, containing 548 acres of      (Docket No. 97-0448SIP) (s/d)
78.3510% WI                                       land more or less, and being more
68.5571% NRI                                      particularly described in Oil &     AR-052768
                                                  Gas Lease dated September 11,       Saltwater Disposal Agreement between East
                                                  1930, and recorded in Volume 4,     Texas Salt Water Disposal Company and
                                                  Page 412, Deed Records Gregg        Atlantic Richfield Company dated October 1,
                                                  County, Texas                       1975. (s/d)

                            42-183-09003-000      451.58 acres, more or less, being   PD-2004
                                                  all of the land described therein   Joint Operating Agreement dated September 28,
                                                  Save and Except the W/2 of S/200    1931, by and between Sun  Oil Company and
                                                  acres of Alvice Survey from the     Atlantic Oil Producing Company (s)
                                                  surface to 3,655 feet, as more
                                                  particularly described in that      PD-2417
                                                  certain Surface Lease dated         Operating Agreement dated May 1, 1940,
                                                  November 11, 1964, recorded in      between Stanolind Oil & Gas Co. and Atlantic
                                                  Volume 663, Page 469, Deed          Refining Co. and Sun Oil Co. (s)
                                                  Records, Gregg County, Texas.
                                                                                      AR-000675
                                                                                      Boundary Agreement between The Atlantic
                                                                                      Refining Company, Stanolind Oil & Gas
                                                                                      Company, and Sun Oil Company, dated June 24,
                                                                                      1937. (s)

                                                                                      AR-98412
                                                                                      Longview Gas Plant Gas Purchase Contract
                                                                                      dated January 1, 1997, by and between ARCO
                                                                                      Permian, Seller and ARCO Permian, Buyer, as
                                                                                      amended effective August 1, 1998

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 21 of 165
<PAGE>   48


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-004949-000      Mrs. Pet Hopkins et     B. A. Skipper          5-20-30     4         328
Hopkins  (s)                                       vir John T. Hopkins
414245400
50% WI
43.7513% NRI

White Oak Field
(Cotton Valley)
Pet Hopkins Gas Unit (d)
437459203
 .000016% RI
1.652946% ORRI BPO
3.967071% WI APO
3.471188% NRI APO

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-004949-000     173 acres out of the W. H.          AR-105265-000
Hopkins  (s)                                      Castleberry HR Survey, and more     Purchase and Sale Agreement dated October 6,
414245400                                         particularly described by metes     1995 by and between East Texas Gathering
50% WI                                            and bounds in that certain Oil      Company, Atlantic Richfield Company, Sun Pipe
43.7513% NRI                                      and Gas Lease dated May 20,1930,    Line Company and Sun Company, Inc. (s)
                                                  recorded in Volume 4, Page 328,
White Oak Field                                   Deed Records, Gregg County, Texas.  AR-105265-001
(Cotton Valley)                                                                       Crude Oil Buy/Sell Contract dated effective
Pet Hopkins Gas Unit (d)                                                              December 1, 1995 by and between ARCO Permian
437459203                                                                             and Sun Company, Inc. (s)
 .000016% RI
1.652946% ORRI BPO                                                                    AR-95702-005
3.967071% WI APO                                                                      Declaration of Unitization and Designation of
3.471188% NRI APO                                                                     Gas Unit dated July 16, 1993, C W Resources,
                                                                                      Inc., Operator. (d)

                                                                                      AR-95702
                                                                                      Farmout Agreement dated February 13, 1990 by
                                                                                      and between Atlantic Richfield Company, and C
                                                                                      W Resources, Inc. (d)

                                                                                      AR-7967
                                                                                      Casinghead Gas Contract dated June 6, 1950,
                                                                                      by and between the Atlantic Refining Company,
                                                                                      et al and Arkansas Fuel Oil Company, as
                                                                                      amended on November 11, 1963 and March 16,
                                                                                      1979. (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 22 of 165
<PAGE>   49


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003975-00B      M. B. Hughes, et ux     Bert Kouns             10-15-30    62        51
Hughey "A" Well #5  (s)                            Annie Hughes
414275600
100% WI
87.5049% NRI
                            42-183-003975-00A
Hughey "A"  (Except #5) (s)
414270500
77.50% WI
67.8174% NRI

Hughey B&C  (s)             42-183-004417-000
414280200
100% WI
87.5014% NRI

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-043543-000      J. R. Watson, et ux     D. H. Byrd             12-29-30    70        32
J. R. Watson (s)                                   Sue Juanita Watson
416023100
1.5625% ORRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003975-00B     Two tracts of land, being one 204   AR-101580
Hughey "A" Well #5  (s)                           acre tract out of the L. B.         Like-Kind Exchange Agreement dated June 1,
414275600                                         Outlaw Headright Survey and one     1992 by and between Atlantic Richfield
100% WI                                           80 acre tract out of the William    Company and Conoco, Inc. (s/d)
87.5049% NRI                                      McCurry Headright Survey for a
                            42-183-003975-00A     total of 284 acres, and more        AR-98412
Hughey "A"  (Except #5) (s)                       fully described by metes and        Longview Gas Plant Gas Purchase Contract
414270500                                         bounds in that certain Oil, Gas &   dated January 1, 1997, by and between ARCO
77.50% WI                                         Mineral Lease dated October 15,     Permian, seller and ARCO Permian, buyer, as
67.8174% NRI                                      1930, recorded in Volume 62, Page   amended effective August 1, 1998 (s)
                                                  51, Deed Records, Gregg County,
Hughey B&C  (s)             42-183-004417-000     Texas.                              AR-52769
414280200                                                                             Service Contract for Disposal of Salt Water
100% WI                                                                               dated October 1, 1975, by and between
87.5014% NRI                                                                          Atlantic Richfield Company and East Texas
                                                                                      Salt Water Disposal Company. (s)

                                                                                      PD-1957
                                                                                      Joint Operating Agreement dated June 3, 1931
                                                                                      by and between Byrd-Frost, Inc. and Atlantic
                                                                                      Richfield Oil Producing Company. (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ

- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-043543-000     15 acres out of the John S.         AR-101580
J. R. Watson (s)                                  Caruthers Survey, A-40, Gregg       Like-Kind Exchange Agreement dated June 1,
416023100                                         County, Texas, described in Oil     1992 by and between Atlantic Richfield
1.5625% ORRI                                      and Gas Lease dated December 29,    Company and Conoco, Inc. (s/d)
                                                  1930, recorded in Volume 70, Page
                                                  32, Deed Records, Gregg County,     AR-101547
                                                  Texas.                              Purchase and Sale Agreement dated November
                                                                                      15, 1982 by and between Conoco, Inc. and
                                                                                      Petro-Lewis Corporation. (s/d)

                                                                                      Joint Operating Agreement dated January 1,
                                                                                      1983 by and between Conoco, Inc. and
                                                                                      Petro-Lewis Corporation. (s/d)

                                                                                      AR-101555
                                                                                      Operating Agreement dated January 1, 1959 by
                                                                                      and between Pan-American Petroleum
                                                                                      Corporation and Arkansas Fuel Oil
                                                                                      Corporation. (s/d)
</TABLE>


                                 Page 23 of 165
<PAGE>   50


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Gladewater Field            42-183-000815-000      J. D. Pollard           Argo Royalty Company   5-19-31     88        261
(Haynesville)               (Mineral Deed)
J. T. Jeter Estate Gas Unit
Well #1 (d)
413101100
 .395682% RI
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-000035-001      J. W. Akin, et ux       H. J. Wilder           10-10-30    4         562
J. W. Akin "A"  (s)                                Nellie Akin
412050700
100% WI
87.5% NRI

J. W. Akin "A" (RI)
412053100
 .00004% RI
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-000012-001      J. W. Akin et ux,       O. M. Boren and L.     10-5-30     61        432
J. W. Akin "B"  (s)                                Nellie Akin             A. Grelling, Jr.
412051500
100% WI
87.5001% NRI

White Oak Field
(Cotton Valley)  (d)
J. W. Akin Gas Unit #1
414142300
5.2948% ORRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
Gladewater Field            42-183-000815-000     A tract of land out of the H. R.    Oil and Gas Lease dated January 1, 1988,
(Haynesville)               (Mineral Deed)        Hockit Survey, A-95, Gregg          recorded by Memorandum of Oil and Gas Lease
J. T. Jeter Estate Gas Unit                       County, Texas, containing 37        in Volume 1941, Page 140, Official Public
Well #1 (d)                                       acres more or less, and more        Records, Gregg County, Texas.
413101100                                         particularly described in that
 .395682% RI                                       certain Mineral Deed dated May
                                                  19, 1931, recorded in Volume 88,
                                                  Page 261, Deed Records, Gregg
                                                  County, Texas.

- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-000035-001     A tract of land out of the Wm. H.   Texas Natural Resources Conservation
J. W. Akin "A"  (s)                               Castleberry Survey, Gregg County,   Commission Agreed Order (Docket 97-0448-SIP)
412050700                                         Texas, containing 96.0 acres more   dated July 9, 1997. (s/d)
100% WI                                           or less, and  more particularly
87.5% NRI                                         described by metes and bounds in    AR-23556
                                                  that certain Oil and Gas Lease      Oil Well Gas Contract dated July 3, 1962, by
J. W. Akin "A" (RI)                               dated October 10, 1930, recorded    and between The Atlantic Refining Company,
412053100                                         in Volume 4, Page 562, Deed         Seller and Sinclair Oil & Gas Company, Buyer
 .00004% RI                                        Records, Gregg County, Texas        (s), amended February 20, 1991

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ

- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-000012-001     A tract of land out of the W. H.    Texas Natural Resources Conservation
J. W. Akin "B"  (s)                               Castleberry Survey, Gregg County,   Commission Agreed Order (Docket No.
412051500                                         Texas, containing the South 200     97-0448-SIP) dated July 9, 1997. (s/d)
100% WI                                           acres more or less, and more
87.5001% NRI                                      particularly described by metes     AR-95702
                                                  and bounds in Oil and Gas Lease     Farmout Agreement dated February 13, 1990 by
White Oak Field                                   dated October 5, 1930, recorded     and between Atlantic Richfield Company, and C
(Cotton Valley)  (d)                              in Volume 61, Page 432, Deed        W Resources, Inc. (d)
J. W. Akin Gas Unit #1                            Records, Gregg County, Texas
414142300                                                                             AR-95702-009
5.2948% ORRI                                                                          Declaration of Unitization and Designation of
                                                                                      Gas Unit dated effective July 10, 1996 by and
                                                                                      between Atlantic Richfield Company and C W
                                                                                      Resources, Inc. (d)

                                                                                      AR-23556
                                                                                      Oil Well Gas Contract dated July 3, 1962, by
                                                                                      and between The Atlantic Refining Company,
                                                                                      Seller and Sinclair Oil & Gas Company, Buyer
                                                                                      (s), amended February 20, 1991

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 24 of 165
<PAGE>   51


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-000818-000      John T. O'Neil          Argo Royalty Company   3-19-32     123       20
Jettie Barnes (616,650318)  (Mineral Deed)
(s)
410427700
1.56250% RI

White Oak Field
(Cotton Valley Sand)
J. M. Christian Gas Unit #1
(d)
400060900
1.56250% RI
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-000048-001      John R. Williams, et    W. H. Winn             9-19-30     61        326
John R. Williams  (s)                              ux
416830500
100% WI
 .025% RI
87.500% NRI


White Oak Field
(Cotton Valley)
J. R. Williams Gas Unit
#1(d)
415698600
4.17407% ORRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-000818-000     A tract of land out of the G. W.    Oil and Gas Lease dated January 2, 1931,
Jettie Barnes (616,650318)  (Mineral Deed)        Hooper Survey, Gregg County,        recorded in Volume 95, Page 290, Deed
(s)                                               Texas, containing 30.0 acres more   Records, Gregg County, Texas.
410427700                                         or less, and more particularly
1.56250% RI                                       described in that certain Oil and
                                                  Gas Lease dated March 19, 1932,
White Oak Field                                   recorded in Volume 123, Page 20,
(Cotton Valley Sand)                              Deed Records, Gregg County, Texas.
J. M. Christian Gas Unit #1
(d)
400060900
1.56250% RI
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-000048-001     A tract of land out of the John     AR-105473-001
John R. Williams  (s)                             Ruddle and W. L. Wilborne           Designation of Unit for the J. R. Williams
416830500                                         Surveys, Gregg County, Texas,       Gas Unit No. 1, dated effective May 5, 1997
100% WI                                           containing 81.2 acres more or       by C W Resources, et al. (d)
 .025% RI                                          less, and more particularly
87.500% NRI                                       described in that certain Oil,      AR-105473
                                                  Gas and Mineral Lease dated         Farmout Agreement dated effective February 1,
                                                  September 19, 1930, recorded in     1996 by and between Atlantic Richfield
White Oak Field                                   Volume 61, Page 326, Deed           Company, Wagner & Brown, Ltd., and C W
(Cotton Valley)                                   Records, Gregg County, Texas.       Resources, Inc. (d)
J. R. Williams Gas Unit
#1(d)                                                                                 AR-105265-001
415698600                                                                             Crude Oil Buy/Sell Contract dated effective
4.17407% ORRI                                                                         December 1, 1995 by and between ARCO Permian
                                                                                      and Sun Company, Inc. (s)

                                                                                      AR-105265-000
                                                                                      Purchase and Sale Agreement dated October 6,
                                                                                      1995 by and between East Texas Gathering
                                                                                      Company, Atlantic Richfield Company, Sun Pipe
                                                                                      Line Company and Sun Company, Inc. (s)

                                                                                      AR-23556
                                                                                      Oil Well Gas Contract dated July 3, 1962, by
                                                                                      and between The Atlantic Refining Company,
                                                                                      Seller and Sinclair Oil & Gas Company, Buyer
                                                                                      (s), amended February 20, 1991

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 25 of 165
<PAGE>   52


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-000031-001      Mary Lawson, et al      W. H. Winn             9-22-30     62        398
Mary Lawson  (s)
414700600
100% WI
87.5% NRI



                            42-183-000031-002      Mamie Henderson, et     J. C. Davis            3-14-31     78        104
                                                   vir






                            42-183-000031-003      Mary Lawson, as         Sinclair Oil & Gas     6-22-31     96        85
                                                   Guardian of Juanita     Company
                                                   Lawson, et al

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-000031-001     A tract of land out of the          AR-105265-000
Mary Lawson  (s)                                  Pleasant McAnelly Survey, Gregg     Purchase and Sale Agreement dated October 6,
414700600                                         County, Texas, containing 86.75     1995 by and between East Texas Gathering
100% WI                                           acres more or less, and more        Company, Atlantic Richfield Company, Sun Pipe
87.5% NRI                                         particularly described in that      Line Company and Sun Company, Inc.  (s)
                                                  certain Oil and Gas Lease dated
                                                  September 22, 1930, recorded in     AR-105265-001
                                                  Volume 62, Page 398, Deed           Crude Oil Buy/Sell Contract dated effective
                                                  Records, Gregg County, Texas.       December 1, 1995 by and between ARCO Permian
                                                                                      and Sun Company, Inc. (s)
                            42-183-000031-002     A tract of land out of the
                                                  Pleasant McAnelly Survey, Gregg     AR-23556
                                                  County, Texas, containing 86.75     Oil Well Gas Contract dated July 3, 1962, by
                                                  acres more or less, and more        and between The Atlantic Refining Company,
                                                  particularly described in that      Seller and Sinclair Oil & Gas Company, Buyer
                                                  certain Oil and Gas Lease dated     (s), amended February 20, 1991
                                                  March 14, 1931, recorded in
                                                  Volume 78, Page 104, Deed           Private Radio License from Federal
                                                  Records, Gregg County, Texas.       Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                            42-183-000031-003     A tract of land out of the          1992, File No. 0000000319451, Call Sign
                                                  Pleasant McAnelly Survey, Gregg     KNEP883, Frequency 154.47875 MHZ
                                                  County, Texas, containing 86.75
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  June 22, 1931, recorded in Volume
                                                  96, Page 85 of Deed Records of
                                                  Gregg County, Texas.

</TABLE>


                                 Page 26 of 165
<PAGE>   53


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-000044-001      Mattie Moncrief, et al  M. C. Sells            10-13-30    61        223
Mattie Moncrief (s)
415270100
100% WI
87.5% NRI

White Oak Field
(Cotton Valley)
Mattie Moncrief #1  (d)
411129000                   42-183-000044-002      Mattie Moncrief,        Sinclair Oil           4-23-31     83        259
12.5% ORRI                                         Guardian                Corporation

White Oak Field
(Cotton Valley)
J. C. Persons #1A  (d)
437451701
1.085823% ORRI BPO
2.605976% WI APO
2.280229% NRI APO

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-000044-001     A tract of land out of the          AR-95702
Mattie Moncrief (s)                               William H. Castleberry Survey,      Farmout Agreement dated February 13, 1990 by
415270100                                         Gregg County, Texas, containing     and between Atlantic Richfield Company, and C
100% WI                                           307.5 acres more or less, and       W Resources, Inc. (d)
87.5% NRI                                         more particularly described in
                                                  that certain Oil and Gas Lease      AR-105265-000
White Oak Field                                   dated October 13, 1930, recorded    Purchase and Sale Agreement dated October 6,
(Cotton Valley)                                   in Volume 61, Page 223, Deed        1995 by and between East Texas Gathering
Mattie Moncrief #1  (d)                           Records, Gregg County, Texas.       Company, Atlantic Richfield Company, Sun Pipe
411129000                                                                             Line Company and Sun Company, Inc. (s)
12.5% ORRI                  42-183-000044-002     A tract of land out of the
                                                  William H. Castleberry Survey,      AR-105265-001
White Oak Field                                   Gregg County, Texas, containing     Crude Oil Buy/Sell Contract dated effective
(Cotton Valley)                                   307.5 acres more or less, and       December 1, 1995 by and between ARCO Permian
J. C. Persons #1A  (d)                            more particularly described in      and Sun Company, Inc. (s)
437451701                                         that certain Oil and Gas Lease
1.085823% ORRI BPO                                dated April 23, 1931, recorded in   AR-64597
2.605976% WI APO                                  Volume 83, Page 259, Deed           Salt Water Disposal Agreement dated June 28,
2.280229% NRI APO                                 Records, Gregg County, Texas.       1982, by and between ARCO Oil and Gas Company
                                                                                      and East Texas Salt Water Disposal Company.
                                                                                      (s)

                                                                                      AR-95702-002
                                                                                      Declaration of Unitization and Designation of
                                                                                      Gas Unit forming the J. C. Persons Gas Unit,
                                                                                      dated June 19, 1992. (d)

                                                                                      AR-23556
                                                                                      Oil Well Gas Contract dated July 3, 1962, by
                                                                                      and between The Atlantic Refining Company,
                                                                                      Seller and Sinclair Oil & Gas Company, Buyer
                                                                                      (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 27 of 165
<PAGE>   54


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-004044-000      Percy McGeorge          Cranfill and Germany   1-5-31      68        174
McGeorge  (s)
415095300
100% WI
87.5% NRI




- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-000278-000      J. S. Smith             Higgins Oil & Fuel     2-18-31     90        73
Nat Bean "A" & "B"          (Mineral Deed)                                 Company
417060100
 .7813% RI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-004044-000     A tract of land out of the          AR-64597
McGeorge  (s)                                     Pleasant McAnelly Survey, Gregg     Salt Water Disposal Agreement dated June 28,
415095300                                         County, Texas, containing 40.0      1982, by and between ARCO Oil and Gas Company
100% WI                                           acres more or less, and more        and East Texas Salt Water Disposal Company.
87.5% NRI                                         particularly described in that      (s)
                                                  certain Oil and Gas Lease dated
                                                  January 5, 1931, recorded in        AR-98412
                                                  Volume 68, Page 174, Deed           Longview Gas Plant Gas Purchase Contract
                                                  Records, Gregg County, Texas.       dated January 1, 1997, by and between ARCO
                                                                                      Permian, seller and ARCO Permian, buyer, as
                                                                                      amended effective August 1, 1998 (s)

                                                                                      AR-105265-000
                                                                                      Purchase and Sale Agreement dated October 6,
                                                                                      1995 by and between East Texas Gathering
                                                                                      Company, Atlantic Richfield Company, Sun Pipe
                                                                                      Line Company and Sun Company, Inc. (s)

                                                                                      AR-105265-001
                                                                                      Crude Oil Buy/Sell Contract dated effective
                                                                                      December 1, 1995 by and between ARCO Permian
                                                                                      and Sun Company, Inc. (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ

- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-000278-000     A tract of land out of Tipton R.
Nat Bean "A" & "B"          (Mineral Deed)        Bean & Mary Ann Bean tracts on
417060100                                         the Mary Van Winkle, W. P.
 .7813% RI                                         Chisum, Isaac Ruddle and Jacob
                                                  Lewis Surveys, Gregg and Rusk
                                                  Counties, Texas, and more
                                                  particularly described in that
                                                  certain Mineral Deed dated
                                                  February 18, 1931, recorded in
                                                  Volume 90, Page 73, Deed Records,
                                                  Gregg County, Texas
</TABLE>


                                 Page 28 of 165
<PAGE>   55


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
White Oak Field             42-183-004018-000      P. C. Castleberry, et   B. A. Skipper          9-12-30     4         362
(Cotton Valley)                                    ux
P. C. Castleberry Gas Unit
(d)
414681600
1.61169% ORRI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
White Oak Field             42-183-004018-000     A tract of land out of the G. W.    AR-95702-008
(Cotton Valley)                                   Hooper Survey, Gregg County,        Declaration of Unitization and Designation of
P. C. Castleberry Gas Unit                        Texas, containing 37.8 acres more   the Gas Unit, dated effective February 5,
(d)                                               or less, and more particularly      1996, by and between Atlantic Richfield
414681600                                         described by metes and bounds in    Company and C W Resources, Inc.  (d)
1.61169% ORRI                                     that certain Oil, Gas and Mineral
                                                  Lease dated September 12, 1930,     AR-95702
                                                  recorded in Volume 4, Page 362,     Farmout Agreement dated February 13, 1990 by
                                                  Deed Records, Gregg County, Texas.  and between Atlantic Richfield Company and C
                                                                                      W Resources, Inc.  (d)
                                                  Only insofar as rights are
                                                  limited to below the Woodbind       AR-101621
                                                  formation.                          Purchase and Sale Agreement effective January
                                                                                      1, 1993 by and between Atlantic Richfield
                                                                                      Company and Madera Production Company.
</TABLE>

                                 Page 29 of 165
<PAGE>   56


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-005882-000      R. A. Penn, et ux       A. T. Smith            12-14-37    225       353
Penn  (s)
415610200
50.00% WI
43.75% NRI


White Oak Field
(Cotton Valley)
T. B. Harris Gas Unit #2
(d)
437459200
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #3 (d)
437459201
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #5 (d)
437459202
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #4 (d)
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-005882-000     A tract of land out of the          AR-000753
Penn  (s)                                         William Robinson Survey, Gregg      Joint Operating Agreement dated March 21,
415610200                                         County, Texas, more particularly    1938 by and between the Atlantic Refining
50.00% WI                                         described in that certain Oil and   Company and J. K. Wadley, et al.
43.75% NRI                                        Gas Lease dated December 14,
                                                  1937, recorded in Volume 225,       AR-95702
                                                  Page 353, Deed Records, Gregg       Farmout Agreement dated February 13, 1990 by
White Oak Field                                   County, Texas.                      and between Atlantic Richfield Company, and C
(Cotton Valley)                                                                       W Resources, Inc. (d)
T. B. Harris Gas Unit #2
(d)                                                                                   AR-018030-001
437459200                                                                             Declaration Unit dated December 27, 1957, C W
 .000597% RI                                                                          Resources, Inc., Operator. (d)
3.180539% ORRI BPO
7.63317% WI APO                                                                       AR-18030-000
6.67902% NRI APO                                                                      Joint Operating Agreement dated May 14, 1957
                                                                                      by and between Atlantic Refining Company,
T. B. Harris Gas Unit #3 (d)                                                          Operator, and Humble Oil and Refining
437459201                                                                             Company, et al, Non-Operator. (d)
 .000597% RI
3.180539% ORRI BPO                                                                    AR-7566
7.63317% WI APO                                                                       Casinghead Gas Contract dated June 9, 1950,
6.67902% NRI APO                                                                      by and between The Atlantic Refining Company
                                                                                      (ARCO Oil & Gas), Susie L. Wadley and J. K.
T. B. Harris Gas Unit #5 (d)                                                          Wadley, Seller, and Arkansas Fuel Oil Company
437459202                                                                             (Trident NGL, Inc.), Buyer.
 .000597% RI
3.180539% ORRI BPO                                                                    Private Radio License from Federal
7.63317% WI APO                                                                       Communications Commission to ARCO
6.67902% NRI APO                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
T. B. Harris Gas Unit #4 (d)                                                          KNEP883, Frequency 154.47875 MHZ
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO
</TABLE>


                                 Page 30 of 165
<PAGE>   57


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-004948-000      Bun E. Rodden, et al    W. A. Moncrief         9-16-30     60        207
Rodden  (s)
415890300
50% WI
43.7504% NRI

Willow Springs Field
Cotton Valley
Lathrop Gas Unit
417898000
2.26152% WI
1.97883%  NRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-004948-000     A tract of land out of the          AR-94444
Rodden  (s)                                       William Robinson Survey, A-177,     Purchase and Sale Agreement dated effective
415890300                                         Gregg County, Texas, and more       October 1, 1991 by and between The Sinclair
50% WI                                            particularly described in that      Revocable Trust, The Fernald Point Production
43.7504% NRI                                      certain Oil and Gas Lease dated     Trust and Atlantic Richfield Company. (s)
                                                  September 16, 1930, recorded in
Willow Springs Field                              Volume 60, Page 207, Deed           Texas Natural Resources Conservation
Cotton Valley                                     Records, Gregg County, Texas.       Commission Agreed Order dated September 9,
Lathrop Gas Unit                                                                      1997.  (Docket 97-0448-SIP) (s/d)
417898000
2.26152% WI                                                                           AR-7967
1.97883%  NRI                                                                         Casinghead Gas Contract dated June 6, 1950,
                                                                                      by and between the Atlantic Refining Company,
                                                                                      et al and Arkansas Fuel Oil Company, as
                                                                                      amended on November 11, 1963 and March 16,
                                                                                      1979. (s)

                                                                                      PD-3520
                                                                                      Operating Contract dated January 24, 1931
                                                                                      between Frank R. Foster, Roeser & Pendleton,
                                                                                      Inc. and Freeman Burford. (s/d)

                                                                                      AR-13913
                                                                                      Operating Agreement dated September 20, 1955,
                                                                                      between Stanolind Oil & Gas Company and
                                                                                      Arkansas Fuel Oil Corporation, et al. (d)

                                                                                      Declaration of Unitization dated September
                                                                                      20, 1955 between Stanolind Oil and Gas
                                                                                      Company and Atlantic Refining Company, et al,
                                                                                      covering the F. K. Lathrop Gas Unit,
                                                                                      consisting of 699.53 acres. (d)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 31 of 165
<PAGE>   58


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-000040-001      S. G. Andrews et ux     J. R. Stebbins         10-15-30    62        62
S. G. Andrews (s)                                  Myrtle Andrews
412110400
100% WI
87.5% NRI

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-004951-000      S. G. Smith, et ux      B. A. Skipper          5-6-30      4         330
S. G. Smith  (s)
416245500
50.00% WI
43.75% NRI

White Oak Field
(Cotton Valley)
T. B. Harris Gas Unit #2 (d)
437459200
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #3 (d)
437459201
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #5 (d)
437459202
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #4 (d)
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-000040-001     A tract of land out of the J. G.    AR-64596
S. G. Andrews (s)                                 Walker Survey, A-215, Gregg         Saltwater Disposal Contract dated June 22,
412110400                                         County, Texas, containing 200.0     1982, between ARCO Oil and Gas Company and
100% WI                                           acres more or less, and more        East Texas Salt Water Disposal Company. (s)
87.5% NRI                                         particularly described in that
                                                  certain Oil and Gas Lease dated     AR-23556
                                                  October 15, 1930, recorded in       Oil Well Gas Contract dated July 3, 1962, by
                                                  Volume 62, Page 62, Deed Records,   and between The Atlantic Richfield Company
                                                  Gregg County, Texas                 (ARCO Permian), Seller, and Sinclair Oil &
                                                                                      Gas Company, Buyer

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ

- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-004951-000     That certain 48 l/2 acre tract      AR-18030-000
S. G. Smith  (s)                                  out of the W. H. Castleberry        Joint Operating Agreement dated May 14, 1957
416245500                                         Survey, Gregg County, Texas, and    by and between Atlantic Refining Company,
50.00% WI                                         more fully described in that        Operator, and Humble Oil and Refining
43.75% NRI                                        certain Oil, Gas & Mineral Lease    Company, et al, Non-Operator. (d)
                                                  dated May 6, 1930, recorded in
White Oak Field                                   Volume 4, Page 330, Deed Records,   AR-95702
(Cotton Valley)                                   Gregg County, Texas.                Farmout Agreement dated February 13, 1990 by
T. B. Harris Gas Unit #2 (d)                                                          and between Atlantic Richfield Company, and C
437459200                                                                             W Resources, Inc. (d)
 .000597% RI
3.180539% ORRI BPO                                                                    AR-18030-001
7.63317% WI APO                                                                       Declaration of Unit dated December 27, 1957,
6.67902% NRI APO                                                                      C W Resources, Inc., Operator. (d)

T. B. Harris Gas Unit #3 (d)                                                          PD-3520
437459201                                                                             Operating Contract dated January 24, 1931,
 .000597% RI                                                                           recorded in Volume 68, Page 196, by and
3.180539% ORRI BPO                                                                    between Frank R. Foster and Roeser &
7.63317% WI APO                                                                       Pendleton, Inc.
6.67902% NRI APO
                                                                                      Private Radio License from Federal
T. B. Harris Gas Unit #5 (d)                                                          Communications Commission to ARCO
437459202                                                                             Communications, Inc., dated December 16,
 .000597% RI                                                                           1992, File No. 0000000319451, Call Sign
3.180539% ORRI BPO                                                                    KNEP883, Frequency 154.47875 MHZ
7.63317% WI APO
6.67902% NRI APO                                                                      AR-7967
                                                                                      Casinghead Gas Contract dated June 6, 1950,
T. B. Harris Gas Unit #4 (d)                                                          by and between the Atlantic Refining Company,
 .000597% RI                                                                           et al and Arkansas Fuel Oil Company, as
3.180539% ORRI BPO                                                                    amended on November 11, 1963 and March 16,
7.63317% WI APO                                                                       1979. (s)
6.67902% NRI APO
</TABLE>



                                 Page 32 of 165
<PAGE>   59


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
White Oak Field             42-183-043549-00A      Alfred Jones and        W. F. Turner           12-25-30    64        47
(Cotton Valley)                                    wife, Fannie Jones
Shiloh School Gas Unit #1
(d)
411006400
0.072778% RI
1.17666% ORRI  BPO
2.94166% WI APO
2.57395% NRI APO
                            42-183-043549-00B      A. H. Teat, Trustee     M. L. Giles            3-11-31     73        316






                            42-183-043549-00C      A. H. Teat, husband     Ralph Cole             4-24-31     79        497
                                                   of Lillian E. Teat

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
White Oak Field             42-183-043549-00A     A tract of land out of the G. W.    AR-101547
(Cotton Valley)                                   Hooper Survey A-92, Gregg County,   Purchase and Sale Agreement dated November
Shiloh School Gas Unit #1                         Texas, and more particularly        15, 1982 by and between Conoco, Inc. and
(d)                                               described in that certain Oil and   Petro-Lewis Corporation.  (s/d)
411006400                                         Gas Lease dated December 25,
0.072778% RI                                      1930, recorded in Volume 64, Page   AR-101580
1.17666% ORRI  BPO                                47, Deed Records, Gregg County,     Like-Kind Exchange Agreement dated June 1,
2.94166% WI APO                                   Texas.                              1992 by and between Atlantic Richfield
2.57395% NRI APO                                                                      Company and Conoco, Inc.  (s/d)

                                                                                      AR-101621
                            42-183-043549-00B     A tract of land out of the G. W.    Purchase and Sale Agreement dated effective
                                                  Hooper Survey A-92, Gregg County,   January 1, 1993, from Atlantic Richfield
                                                  Texas, and more particularly        Company to Madera Production Company.  (s)
                                                  described in that certain Oil and
                                                  Gas Lease dated March 11, 1931,     AR-105435-000
                                                  recorded in Volume 73, Page 316,    Farm Out Agreement dated January 4, 1996 by
                                                  Deed Records, Gregg County, Texas.  and between Atlantic Richfield Company and
                                                                                      Madera Production Company.  (d)
                            42-183-043549-00C     A tract of land out of the G. W.
                                                  Hooper Survey A-92, Gregg County,   AR-105435-001
                                                  Texas, and more particularly        Declaration of Unitization effective November
                                                  described in that certain Oil and   1, 1995, C W Resources, Inc., Operator.  (d)
                                                  Gas Lease dated April 24, 1931,
                                                  recorded in Volume 79, Page 497,    AR-101548
                                                  Deed Records, Gregg County, Texas.  Joint Operating Agreement dated January 1,
                                                                                      1983 by and between Conoco, Inc. and
                                                  Only insofar as leases cover        Petro-Lewis Corporation.  (s/d)
                                                  rights below the Base of the
                                                  Woodbine formation.                 AR-95702
                                                                                      Farmout Agreement dated February 13, 1990 by
                                                                                      and between Atlantic Richfield Company, and C
                                                                                      W Resources, Inc.  (d)
</TABLE>


                                 Page 33 of 165
<PAGE>   60


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
White Oak Field             42-183-005961-00A      Callie  Jones, et al    Dr. E. E. Terry, et    11-30-30    63        101
(Cotton Valley)                                                            al
Stucky-Thrasher Gas Unit (d)
412345000
1.443620 ORRI BPO
3.464689% WI APO
3.031602% NRI APO


                            42-183-005961-00B      Ollie Jones             C. A. Green            1-24-31     68        179








                            42-183-005961-00C      Jane Jones Howard, et   C. A. Green            1-24-31     68        182
                                                   al







                            42-183-005961-00D      Callie Jones, et al     M. H. Shivers, et al   3-6-31      79        141








                            42-183-005961-00E      Arthur Christian,       Arthur Mackey, et al   2-3-31      72        64
                                                   Guardian

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
White Oak Field             42-183-005961-00A     A tract of land out of the G. W.    AR-95702-003
(Cotton Valley)                                   Hooper Survey A-92, Gregg County,   Declaration of Unitization and Designation of
Stucky-Thrasher Gas Unit (d)                      Texas, containing 100 acres more    Gas Unit of the Stucky Thrasher Gas Unit.
412345000                                         or less, and more particularly      (d)
1.443620 ORRI BPO                                 described by metes and bounds in
3.464689% WI APO                                  that certain Oil, Gas and Mineral   AR-95702
3.031602% NRI APO                                 Lease dated November 30, 1930,      Farmout Agreement dated February 13, 1990 by
                                                  recorded in Volume 63, Page 101,    and between Atlantic Richfield Company and C
                                                  Deed Records, Gregg County, Texas.  W Resources, Inc.  (d)AR-95702

                            42-183-005961-00B     A tract of land out of the G. W.    AR-101621
                                                  Hooper Survey A-92, Gregg County,   Purchase and Sale Agreement effective January
                                                  Texas, containing 100 acres more    1, 1993 by and between Atlantic Richfield
                                                  or less, and more particularly      Company and Madera Production Company.
                                                  described by metes and bounds in
                                                  that certain Oil, Gas and Mineral
                                                  Lease dated January 24, 1931,
                                                  recorded in Volume 68, Page 179,
                                                  Deed Records, Gregg County, Texas.

                            42-183-005961-00C     A tract of land out of the G. W.
                                                  Hooper Survey A-92, Gregg County,
                                                  Texas, containing 100 acres more
                                                  or less, and more particularly
                                                  described by metes and bounds in
                                                  that certain Oil, Gas and Mineral
                                                  Lease dated January 24, 1931,
                                                  recorded in Volume 68, Page 182,
                                                  Deed Records, Gregg County, Texas.

                            42-183-005961-00D     A tract of land out of the G. W.
                                                  Hooper Survey A-92, Gregg County,
                                                  Texas, containing 100 acres more
                                                  or less, and more particularly
                                                  described by metes and bounds in
                                                  that certain Oil, Gas and Mineral
                                                  Lease dated March 6, 1931,
                                                  recorded in Volume 79, Page 141,
                                                  Deed Records, Gregg County, Texas.

                            42-183-005961-00E     A tract of land out of the G. W.
                                                  Hooper Survey A-92, Gregg County,
                                                  Texas, containing 100 acres more
                                                  or less, and more particularly
                                                  described by metes and bounds in
                                                  that certain Oil, Gas and Mineral
                                                  Lease dated February 3, 1931,
                                                  recorded in Volume 72, Page 64,
                                                  Deed Records, Gregg County, Texas.

                                                  Only insofar as leases cover
                                                  rights below the Base of the
                                                  Woodbine formation
</TABLE>


                                 Page 34 of 165
<PAGE>   61


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
White Oak Field             42-183-005961-00F      Alex Jones, et ux       A. H. Teat             1-27-31     66        350
(Cotton Valley)
Stucky-Thrasher Gas Unit (d)
412345000
(continued)




                            42-183-005961-00G      Robert Smith            R. W. Curtis           2-19-31     97        521








                            42-183-005961-00H      G. C. Lunsford          E. X. Birdsong         7-14-31     94        473

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
White Oak Field             42-183-005961-00F     A tract of land out of the G. W.
(Cotton Valley)                                   Hooper Survey A-92, Gregg County,
Stucky-Thrasher Gas Unit (d)                      Texas, containing 100 acres more
412345000                                         or less, and more particularly
(continued)                                       described by metes and bounds in
                                                  that certain Oil, Gas and Mineral
                                                  Lease dated January 27, 1931,
                                                  recorded in Volume 66, Page 350,
                                                  Deed Records, Gregg County, Texas.

                            42-183-005961-00G     A tract of land out of the G. W.
                                                  Hooper Survey A-92, Gregg County,
                                                  Texas, containing 110.1 acres
                                                  more or less, and more
                                                  particularly described by metes
                                                  and bounds in that certain Oil,
                                                  Gas and Mineral Lease dated
                                                  February 19, 1931, recorded in
                                                  Volume 97, Page 521, Deed
                                                  Records, Gregg County, Texas.

                            42-183-005961-00H     A tract of land out of the G. W.
                                                  Hooper Survey A-92, Gregg County,
                                                  Texas, containing 40.34 acres
                                                  more or less, and more
                                                  particularly described by metes
                                                  and bounds in that certain Oil,
                                                  Gas and Mineral Lease dated July
                                                  14, 1931, recorded in Volume 94,
                                                  Page 473, Deed Records, Gregg
                                                  County, Texas.

                                                  Only insofar as leases cover
                                                  rights below
                                                  the Base of the Woodbine
                                                  formation.
</TABLE>


                                 Page 35 of 165
<PAGE>   62


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-004045-00A      Buck Harris             Gaines B. Turner,      10-8-19     39        607
T. B. Harris  (s)                                                          Trustee
414101900
100% WI
87.5045% NRI

White Oak Field
(Cotton Valley Sand)
T. B. Harris Gas Unit #5
437459202                   41-183-004045-00B      Clara L. Hayes, et al   W. L. Pickens          1-15-31     65        213
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

White Oak Field
(Cotton Valley Sand)
T. B. Harris Gas Unit #3
437459201                   42-183-004045-00C      T. B. Harris, et al     Otto L. Morris         2-12-31     70        429
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

White Oak Field
(Cotton Valley)
T. B. Harris Gas Unit #2 (d)
437459200                   42-183-090121-000-001  Clara Jean Hodges, et   Atlantic Richfield     7-24-40     252       243
 .000597% RI                 (Surface Lease)        vir                     Company
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #4 (d)
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-004045-00A     A tract of land out of the Wm.      AR-95702
T. B. Harris  (s)                                 Castleberry Survey, A-38, Gregg     Farmout Agreement dated February 13, 1990 by
414101900                                         County, Texas, containing 91.94     and between Atlantic Richfield Company, and C
100% WI                                           acres more or less, and more        W Resources, Inc. (d)
87.5045% NRI                                      particularly described by metes
                                                  and bounds in that certain Oil      Texas Natural Resources Conservation
                                                  and Gas Lease dated October 18,     Commission Agreed Order (Docket No.
White Oak Field                                   1919,  recorded in Volume 39,       97-0448-SIP) dated July 9, 1997. (s/d)
(Cotton Valley Sand)                              Page 607, Deed Records, Gregg
T. B. Harris Gas Unit #5                          County, Texas.                      AR-105265-000
437459202                                                                             Purchase and Sale Agreement dated October 6,
 .000597% RI                 41-183-004045-00B     A tract of land out of the Wm.      1995 by and between East Texas Gathering
3.180539% ORRI BPO                                Castleberry Survey, A-38, Gregg     Company, Atlantic Richfield Company, Sun Pipe
7.63317% WI APO                                   County, Texas, containing 91.94     Line Company and Sun Company, Inc. (s)
6.67902% NRI APO                                  acres more or less, and more
                                                  particularly described by metes     AR-105265-001
                                                  and bounds in that certain Oil      Crude Oil Buy/Sell Contract dated effective
                                                  and Gas Lease dated January 15,     December 1, 1995 by and between ARCO Permian
                                                  1931,  recorded in Volume 65,       and Sun Company, Inc. (s)
White Oak Field                                   Page 213, Deed Records, Gregg
(Cotton Valley Sand)                              County, Texas.                      AR-18030-001
T. B. Harris Gas Unit #3                                                              Declaration of Unit dated December 27, 1957,
437459201                  42-183-004045-00C      A tract of land out of the Wm.      Atlantic Refining Company. (d)
 .000597% RI                                       Castleberry Survey, A-38, Gregg
3.180539% ORRI BPO                                County, Texas, containing 91.94     AR-98412
7.63317% WI APO                                   acres more or less, and more        Longview Gas Plant Gas Purchase Contract
6.67902% NRI APO                                  particularly described by metes     dated January 1, 1997, by and between ARCO
                                                  and bounds in that certain Oil      Permian, Seller and ARCO Permian, Buyer, as
                                                  and Gas Lease dated February 12,    amended effective August 1, 1998
                                                  1931,  recorded in Volume 70,
White Oak Field                                   Page 429, Deed Records, Gregg       Private Radio License from Federal
(Cotton Valley)                                   County, Texas.                      Communications Commission to ARCO
T. B. Harris Gas Unit #2 (d)                                                          Communications, Inc., dated December 16,
437459200                   42-183-090121-000-001 24.405 acres of land in the         1992, File No. 0000000319451, Call Sign
 .000597% RI                 (Surface Lease)       William Castleberry Survey, Gregg   KNEP883, Frequency 154.47875 MHZ
3.180539% ORRI BPO                                County, Texas, as more
7.63317% WI APO                                   particularly described in that
6.67902% NRI APO                                  certain Surface Lease dated July
                                                  24, 1940, recorded in Volume 252,
                                                  page 243, Deed Records, Gregg
                                                  County, Texas.
T. B. Harris Gas Unit #4 (d)
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO
</TABLE>


                                 Page 36 of 165
<PAGE>   63

<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                      DEED
PROPERTY CODE                                                                                      LEASE
ARCO'S INTEREST              ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- ---------------------------  ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                          <C>                    <C>                     <C>                    <C>         <C>       <C>
White Oak Field              42-183-009834-00A      E. M. Whatley, et ux    B. A. Skipper          5-6-30      4         387
(Cotton Valley)
T. B. Harris Gas Unit #2 (d)
437459200
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #3 (d) 42-183-009834-00B      Gordon Whatley          Lonnie Glasscock       1-19-31     66        156
437459201
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #5 (d)
437459202
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

T. B. Harris Gas Unit #4 (d)
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------   ----------------------------------  ---------------------------------------------
<S>                         <C>                    <C>                                 <C>
White Oak Field              42-183-009834-00A     That certain tract of land out of   AR-18030-000
(Cotton Valley)                                    the William Robinson Survey,        Joint Operating Agreement dated May 14, 1957
T. B. Harris Gas Unit #2 (d)                       Abstract 177, and W. H.             by and between Atlantic Refining Company,
437459200                                          Castleberry Survey, Gregg County,   Operator, and Humble Oil and Refining
 .000597% RI                                        Texas, and more fully described     Company, et al, Non-Operator.  (d)
3.180539% ORRI BPO                                 by metes and bounds in that
7.63317% WI APO                                    certain Oil and Gas Lease dated     AR-101621
6.67902% NRI APO                                   May 6, 1930, recorded in Volume     Purchase and Sale Agreement dated effective
                                                   4, Page 387, Deed Records, Gregg    January 1, 1993, from Atlantic Richfield
T. B. Harris Gas Unit #3 (d) 42-183-009834-00B     County, Texas.                      Company to Madera Production Company.  (s)
437459201
 .000597% RI                                        That certain  tract of land out     AR-95702
3.180539% ORRI BPO                                 of the William Robinson Survey,     Farmout Agreement dated February 13, 1990 by
7.63317% WI APO                                    Abstract 177, and W. H.             and between Atlantic Richfield Company, and C
6.67902% NRI APO                                   Castleberry Survey, Gregg County,   W Resources, Inc.  (d)
                                                   Texas, and more fully described
T. B. Harris Gas Unit #5 (d)                       by metes and bounds in that         AR-18030-001
437459202                                          certain Oil and Gas Lease dated     Declaration Unit dated December 27, 1957,
 .000597% RI                                        January 19, 1931,  recorded in      Atlantic Refining Company, Operator.  (d)
3.180539% ORRI BPO                                 Volume 66, Page 156, Deed
7.63317% WI APO                                    Records, Gregg County, Texas.
6.67902% NRI APO

T. B. Harris Gas Unit #4 (d)
 .000597% RI
3.180539% ORRI BPO
7.63317% WI APO
6.67902% NRI APO
</TABLE>


                                 Page 37 of 165
<PAGE>   64


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                      DEED
PROPERTY CODE                                                                                      LEASE
ARCO'S INTEREST              ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- ---------------------------  ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                          <C>                    <C>                     <C>                    <C>         <C>       <C>
White Oak Field              42-183-009834-00C      Leonard Weldon Whatley  Lonnie Glasscock       1-15-31     66        89
(Cotton Valley)
T. B. Harris Gas Unit #2 (d)
437459200

T. B. Harris Gas Unit #3 (d)
437459201

T. B. Harris Gas Unit #5 (d)
437459202                    42-183-009834-00D      Novie Wood, et ux,      E. B. Germany          1-15-31     63        434
                                                    et al
T. B. Harris Gas Unit #4 (d)
 (continued)





                             42-183-009834-00E      Preston Lee, et ux      W. P. Luse             3-14-31     75        98


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------   ----------------------------------  ---------------------------------------------
<S>                         <C>                    <C>                                 <C>
White Oak Field              42-183-009834-00C     That certain tract of land out of
(Cotton Valley)                                    the William Robinson Survey,
T. B. Harris Gas Unit #2 (d)                       Abstract 177, and W. H.
437459200                                          Castleberry Survey, Gregg County,
                                                   Texas, and more fully described
T. B. Harris Gas Unit #3 (d)                       by metes and bounds in that
437459201                                          certain Oil and Gas Lease dated
                                                   January 15, 1931, recorded in
                                                   Volume 66, Page 89, Deed Records,
T. B. Harris Gas Unit #5 (d)                       Gregg County, Texas.
437459202
                             42-183-009834-00D     That certain tract of land out of
                                                   the William Robinson Survey,
                                                   Abstract 177, and W. H.
T. B. Harris Gas Unit #4 (d)                       Castleberry Survey, Gregg County,
(continued)                                        Texas, and more fully described
                                                   by metes and bounds in that
                                                   certain Oil and Gas Lease dated
                                                   January 15, 1931, recorded in
                                                   Volume 63, Page 434, Deed
                                                   Records, Gregg County, Texas.

                             42-183-009834-00E     That certain tract of land out of
                                                   the William Robinson Survey,
                                                   Abstract 177, and W. H.
                                                   Castleberry Survey, Gregg County,
                                                   Texas, and more fully described
                                                   by metes and bounds in that
                                                   certain Oil and Gas Lease dated
                                                   March 14, 1931, recorded in
                                                   Volume 75, Page 98, Deed Records,
                                                   Gregg County, Texas.
</TABLE>


                                 Page 38 of 165
<PAGE>   65


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003990-000      T. W. Lee               J. K. Wadley           3-23-31     78        246
T. W. Lee  (s)
414745600
92.50% WI
80.9375% NRI

Glenwood Field
(Cotton Valley)
T. W. Lee Gas Unit
415131300
9.10804% ORRI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003990-000     A tract of land out of the David    AR-105473
T. W. Lee  (s)                                    Ferguson Survey, Gregg County,      Farmout Agreement dated effective February 1,
414745600                                         Texas, containing 111.67 acres      1996 by and between Atlantic Richfield
92.50% WI                                         more or less, and more              Company, Wagner & Brown, Ltd., and C W
80.9375% NRI                                      particularly described in that      Resources, Inc. (d)
                                                  certain Oil and Gas Lease dated
Glenwood Field                                    March 23, 1931, recorded in         AR-105265-000
(Cotton Valley)                                   Volume 78, Page 246, Deed           Purchase and Sale Agreement dated October 6,
T. W. Lee Gas Unit                                Records, Gregg County, Texas.       1995 by and between East Texas Gathering
415131300                                                                             Company, Atlantic Richfield Company, Sun Pipe
9.10804% ORRI                                                                         Line Company and Sun Company, Inc. (s)

                                                                                      AR-105265-001
                                                                                      Crude Oil Buy/Sell Contract dated effective
                                                                                      December 1, 1995 by and between ARCO Permian
                                                                                      and Sun Company, Inc. (s)

                                                                                      AR-81381
                                                                                      Longview Gas Plant Oil Well Gas Purchase
                                                                                      Contract dated July 24, 1996, by and between
                                                                                      ARCO Permian, seller and ARCO Permian, buyer,
                                                                                      as amended effective August 13, 1998. (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 39 of 165
<PAGE>   66


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-004024-000      Allen Tooke, et al      Ardis O. Phillips      10-7-30     4         501
Tooke "B"  (s)
416530600
100% WI
87.50% NRI

White Oak Field
(Cotton Valley)
Allen Tooke Gas Unit #1 (d)
411005600
4.540623% ORRI

Tooke "B"  (s)
413014600
0.001395% RI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-004024-000     A tract of land out of the W. G.    AR-105265-000
Tooke "B"  (s)                                    Painter Survey, Gregg County,       Purchase and Sale Agreement dated October 6,
416530600                                         Texas, containing 44.0 acres more   1995 by and between East Texas Gathering
100% WI                                           or less, and more particularly      Company, Atlantic Richfield Company, Sun Pipe
87.50% NRI                                        described in that certain Oil and   Line Company and Sun Company, Inc. (s)
                                                  Gas Lease dated October 7, 1930,
White Oak Field                                   recorded in Volume 4, Page 501,     AR-105265-001
(Cotton Valley)                                   Deed Records, Gregg County, Texas.  Crude Oil Buy/Sell Contract dated effective
Allen Tooke Gas Unit #1 (d)                                                           December 1, 1995 by and between ARCO Permian
411005600                                                                             and Sun Company, Inc. (s)
4.540623% ORRI
                                                                                      AR-95702
Tooke "B"  (s)                                                                        Farmout Agreement dated February 13, 1990 by
413014600                                                                             and between Atlantic Richfield Company, and C
0.001395% RI                                                                          W Resources, Inc. (d)

                                                                                      AR-95702-007
                                                                                      Declaration of Unitization and Designation of
                                                                                      Gas Unit dated April 4, 1995, C W Resources,
                                                                                      Inc., Operator. (d)

                                                                                      AR-81381
                                                                                      Longview Gas Plant Oil Well Gas Purchase
                                                                                      Contract dated July 24, 1996, by and between
                                                                                      ARCO Permian, seller and ARCO Permian, buyer,
                                                                                      as amended effective August 13, 1998. (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 40 of 165
<PAGE>   67


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003971-00A      Tommy Lee Turner, et    P. A. Curtis and H.    9-27-30     63        161
Turner  (s)                                        ux                      H. Ivins
416570500
79.21870% WI
69.31960% NRI

White Oak Field
(Cotton Valley)
Allen Tooke Gas Unit #1 (d) 42-183-003971-00B      Lizann Williams,        R. W. Burnett          1-30-31     68        287
411005600                                          et vir
4.540623% ORRI






                            42-183-003971-00C      Charlie Turner, et ux   Ray Bumpus             1-31-31     68        291








                            42-183-003971-00D      Houston Stephens,       W. E. Hicks            2-3-31      70        215
                                                   et ux, et al





                            42-183-003971-00E      Houston Stephens,       T. M. Garland          3-13-31     77        258
                                                   et ux, et al

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003971-00A     A tract of land out of the W. C.    PD-2062
Turner  (s)                                       Wakeland H. R. Survey, Gregg        Operating Agreement dated December 21, 1931
416570500                                         County, Texas, containing 157.0     by and between Atlantic Oil Producing
79.21870% WI                                      acres more or less, and more        Company, Operator, and J. K. Wadley,
69.31960% NRI                                     particularly described in that      Non-Operator. (s/d)
                                                  certain Oil and Gas Lease dated
                                                  September 27, 1930, recorded in     AR-52724
                                                  Volume 63, Page 161, Deed           Salt Water Disposal Agreement dated September
White Oak Field                                   Records, Gregg County, Texas.       29, 1975, between Atlantic Richfield Company
(Cotton Valley)                                                                       and East Texas Salt Water Disposal Company.
Allen Tooke Gas Unit #1 (d) 42-183-003971-00B     A tract of land out of the W. C.    (s)
411005600                                         Wakeland H. R. Survey, Gregg
4.540623% ORRI                                    County, Texas, containing 87.0      AR-105265-000
                                                  acres more or less, and more        Purchase and Sale Agreement dated October 6,
                                                  particularly described by  metes    1995 by and between East Texas Gathering
                                                  and bounds in that certain Oil      Company, Atlantic Richfield Company, Sun Pipe
                                                  and Gas Lease dated January 30,     Line Company and Sun Company, Inc. (s)
                                                  1931, recorded in Volume 68, Page
                                                  287, Deed Records, Gregg County,    AR-105265-001
                                                  Texas.                              Crude Oil Buy/Sell Contract dated effective
                                                                                      December 1, 1995 by and between ARCO Permian
                            42-183-003971-00C     A tract of land out of the W. C.    and Sun Company, Inc. (s)
                                                  Wakeland H. R. Survey, Gregg
                                                  County, Texas, containing 157.0     AR-95702
                                                  acres more or less, and more        Farmout Agreement dated February 13, 1990 by
                                                  particularly described by  metes    and between Atlantic Richfield Company, and C
                                                  and bounds in that certain Oil      W Resources, Inc. (d)
                                                  and Gas Lease dated January 31,
                                                  1931, recorded in Volume 68, Page   AR-95702-007
                                                  291, Deed Records, Gregg County,    Declaration of Unitization and Designation of
                                                  Texas.                              Gas Unit dated April 4, 1995, C W Resources,
                                                                                      Inc. , Operator. (d)
                            42-183-003971-00D     A tract of land out of the W. C.
                                                  Wakeland Survey, Gregg County,      AR-81381
                                                  Texas, containing 29.0 acres more   Longview Gas Plant Oil Well Gas Purchase
                                                  or less, and more particularly      Contract dated July 24, 1996, by and between
                                                  described by metes and bounds in    ARCO Permian, seller and ARCO Permian, buyer,
                                                  that certain Oil and Gas Lease      as amended effective August 13, 1998. (s)
                                                  dated February 3, 1931, recorded
                                                  in Volume 70, Page 215, Deed        Private Radio License from Federal
                                                  Records, Gregg County, Texas.       Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                            42-183-003971-00E     A tract of land out of the W. C.    1992, File No. 0000000319451, Call Sign
                                                  Wakeland H. R. Survey, Gregg        KNEP883, Frequency 154.47875 MHZ
                                                  County, Texas, containing 14.0
                                                  acres more or less, and more
                                                  particularly described by  metes
                                                  and bounds in that certain Oil
                                                  and Gas Lease dated March 13,
                                                  1931, recorded in Volume 77, Page
                                                  258, Deed Records, Gregg County,
                                                  Texas.
</TABLE>


                                 Page 41 of 165
<PAGE>   68

<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003971-00F      Harvey Turner, et ux    R. W. Burnett          3-28-31     72        561
Turner  (s)
416570500

White Oak Field
(Cotton Valley)
Allen Tooke Gas Unit #1 (d)
411005600
(continued)
                            42-183-003971-00G      Bethie Green, et vir,   C. M. Beckett          4-1-31      75        458
                                                   et al






                            42-183-003971-00H      Tommie Lee Turner,      C. M. Beckett          4-1-31      84        29
                                                   et ux, et al





                            42-183-003971-00I      Elnora Turner, et al    William L. Goodwin     4-2-31      77        506







                            42-183-003971-00J      A. Turner, et al        E. H. Brannon          4-7-31      78        519

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003971-00F     A tract of land out of the W. C.
Turner  (s)                                       Wakeland Survey, Gregg County,
416570500                                         Texas, containing 157.0 acres
                                                  more or less, and more
White Oak Field                                   particularly described by metes
(Cotton Valley)                                   and bounds in that certain Oil
Allen Tooke Gas Unit #1 (d)                       and Gas Lease dated March 28,
411005600                                         1931, recorded in Volume 72, Page
(continued)                                       561, Deed Records, Gregg County,
                                                  Texas.

                            42-183-003971-00G     A tract of land out of the W. C.
                                                  Wakeland Survey, Gregg County,
                                                  Texas, containing 157.0 acres
                                                  more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  April 1, 1931, recorded in Volume
                                                  75, Page 458, Deed Records, Gregg
                                                  County, Texas.

                            42-183-003971-00H     A tract of land out of the W. C.
                                                  Wakeland Survey, Gregg County,
                                                  Texas, containing 87.0 acres more
                                                  or less, and more particularly
                                                  described in that certain Oil and
                                                  Gas Lease dated April 1, 1931,
                                                  recorded in Volume 84, Page 29,
                                                  Deed Records, Gregg County, Texas.

                            42-183-003971-00I     A tract of land out of the W. C.
                                                  Wakeland Survey, Gregg County,
                                                  Texas, containing 157.0 acres
                                                  more or less, and more
                                                  particularly described by metes
                                                  and bounds in that certain Oil
                                                  and Gas Lease dated April 2,
                                                  1931, recorded in Volume 77, Page
                                                  506, Deed Records, Gregg County,
                                                  Texas.

                            42-183-003971-00J     A tract of land out of the W. C.
                                                  Wakeland H. R. Survey, Gregg
                                                  County, Texas, containing 80.0
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  April 7, 1931, recorded in Volume
                                                  78, Page 519, Deed Records, Gregg
                                                  County, Texas.
</TABLE>


                                 Page 42 of 165
<PAGE>   69


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003971-00K      Houston Stephens, et    J. K. Wadley           4-18-31     80        511
Turner  (s)                                        ux, et al
416570500

White Oak Field
(Cotton Valley)
Allen Tooke Gas Unit #1 (d)
411005600
(continued)
                            42-183-003971-00L      J. N. Whittle           J. K. Wadley           4-29-31     74        629








                            42-183-003971-00M      Elnora Turner,          J. K. Wadley           4-30-31     74        635
                                                   Guardian







                            42-183-003971-00N      J. T. Dickerson, as     E. H. Brannon          5-11-31     90        9
                                                   Attorney-in-Fact






                            42-183-003971-00O      Houston Stephens,       J. K. Wadley and C     5-25-31     91        180
                                                   et ux, et al            M. Beckett

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003971-00K     A tract of land out of the W. C.
Turner  (s)                                       Wakeland H. R. Survey, Gregg
416570500                                         County, Texas, containing 87.0
                                                  acres more or less, and more
White Oak Field                                   particularly described by  metes
(Cotton Valley)                                   and bounds in that certain Oil
Allen Tooke Gas Unit #1 (d)                       and Gas Lease dated April 18,
411005600                                         1931, recorded in Volume 80, Page
(continued)                                       511, Deed Records, Gregg County,
                                                  Texas.

                            42-183-003971-00L     A tract of land out of the W. C.
                                                  Wakeland Survey, Gregg County,
                                                  Texas, containing 29.0 acres more
                                                  or less, and more particularly
                                                  described by metes and bounds in
                                                  that certain Oil and Gas Lease
                                                  dated April 29, 1931, recorded in
                                                  Volume 74, Page 629, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003971-00M     A tract of land out of the W. C.
                                                  Wakeland Survey, Gregg County,
                                                  Texas, containing 157.0 acres
                                                  more or less, and more
                                                  particularly described by metes
                                                  and bounds in that certain Oil
                                                  and Gas Lease dated April 30,
                                                  1931, recorded in Volume 74, Page
                                                  635, Deed Records, Gregg County,
                                                  Texas.

                            42-183-003971-00N     A tract of land out of the W. C.
                                                  Wakeland H. R. Survey, Gregg
                                                  County, Texas, containing 157.0
                                                  acres more or less, and more
                                                  particularly described by  metes
                                                  and bounds in that certain Oil
                                                  and Gas Lease dated May 11, 1931,
                                                  recorded in Volume 90, Page 9,
                                                  Deed Records, Gregg County, Texas.

                            42-183-003971-00O     A tract of land out of the W. C.
                                                  Wakeland Survey, Gregg County,
                                                  Texas, containing 87.0 acres more
                                                  or less, and more particularly
                                                  described by metes and bounds in
                                                  that certain Oil and Gas Lease
                                                  dated May 25, 1931, recorded in
                                                  Volume 91, Page 180, Deed
                                                  Records, Gregg County, Texas.
</TABLE>


                                 Page 43 of 165
<PAGE>   70

<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003971-00P      W. V. Derrick,          Leland Fikes           6-15-31     94        132
Turner  (s)                                        Guardian
416570500

White Oak Field
(Cotton Valley)
Allen Tooke Gas Unit #1 (d)
411005600
(continued)
                            42-183-003971-00Q      J. K. Wadley            Atlantic Oil           7-7-31      95        278
                                                                           Producing Company







                            42-183-003971-00R      Leland Fikes             J. K. Wadley           7-27-31     100       114

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003971-00P     A tract of land out of the W. C.
Turner  (s)                                       Wakeland H. R. Survey, Gregg
416570500                                         County, Texas, containing 157.0
                                                  acres more or less, and more
White Oak Field                                   particularly described by  metes
(Cotton Valley)                                   and bounds in that certain Oil
Allen Tooke Gas Unit #1 (d)                       and Gas Lease dated June 15,
411005600                                         1931, recorded in Volume 94, Page
(continued)                                       132, Deed Records, Gregg County,
                                                  Texas.

                            42-183-003971-00Q     A tract of land out of the W. C.
                                                  Wakeland Survey, Gregg County,
                                                  Texas, containing 157.0 acres
                                                  more or less, and more
                                                  particularly described by metes
                                                  and bounds in that certain Oil
                                                  and Gas Lease dated July 7, 1931,
                                                  recorded in Volume 95, Page 278,
                                                  Deed Records, Gregg County, Texas.

                             42-183-003971-00R    A tract of land out of the W. C.
                                                  Wakeland H. R. Survey, Gregg
                                                  County, Texas, containing 157.0
                                                  acres more or less, and more
                                                  particularly described by  metes
                                                  and bounds in that certain Oil
                                                  and Gas Lease dated July 27,
                                                  1931, recorded in Volume 100,
                                                  Page 114, Deed Records, Gregg
                                                  County, Texas.
</TABLE>


                                 Page 44 of 165
<PAGE>   71

<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-005960-000      J. M. Tuttle et ux      B. A. Skipper          5-15-30     60        197
Tuttle "B"  (s)                                    Georgia A. Tuttle
416580200
86.58% WI
75.7575% NRI

White Oak Field
(Cotton Valley)
Pet Hopkins Gas Unit (d)
437459203
0.000016% RI
1.652946% ORRI BPO
10.897494% WI APO
9.535307% NRI APO

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-005960-000     A tract of land out of the Wm. H.   AR-00058500
Tuttle "B"  (s)                                   Castleberry Survey A-38, Gregg      Joint Operating Agreement dated November 1,
416580200                                         County, Texas, and more             1937 between The Atlantic Refining Company
86.58% WI                                         particularly described in that      and Petroleum Corporation of Venezuela. (s/d)
75.7575% NRI                                      certain Oil and Gas Lease dated
                                                  May 15, 1930, recorded in Volume    AR-7689
White Oak Field                                   60, Page 197, Deed Records, Gregg   Casinghead Gas Contract dated June 9, 1950,
(Cotton Valley)                                   County, Texas.                      by and between The Atlantic Refining Company
Pet Hopkins Gas Unit (d)                                                              (ARCO Oil & Gas), et al, Seller, and Arkansas
437459203                                                                             Fuel Oil Company (Trident NGL, Inc.), Buyer.
0.000016% RI
1.652946% ORRI BPO                                                                    AR-95702
10.897494% WI APO                                                                     Farmout Agreement dated February 13, 1990 by
9.535307% NRI APO                                                                     and between Atlantic Richfield Company, and C
                                                                                      W Resources, Inc. (d)

                                                                                      AR-95702-005
                                                                                      Declaration of Unitization and Designation of
                                                                                      Gas Unit dated July 16, 1993 between Atlantic
                                                                                      Richfield Company and C W Resources, Inc. (d)

                                                                                      AR-105265-000
                                                                                      Purchase and Sale Agreement dated October 6,
                                                                                      1995 by and between East Texas Gathering
                                                                                      Company, Atlantic Richfield Company, Sun Pipe
                                                                                      Line Company and Sun Company, Inc. (s)

                                                                                      AR-105265-001
                                                                                      Crude Oil Buy/Sell Contract dated effective
                                                                                      December 1, 1995 by and between ARCO Permian
                                                                                      and Sun Company, Inc. (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 45 of 165
<PAGE>   72


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-005877-000      L. Y. Tuttle and T.     Tom Richardson and     1-16-31     68        157
Tuttle "C"  (s)                                    J. Tuttle               Grace Bennett
416585300
100% WI
87.50% NRI

White Oak Field
(Cotton Valley)
Houston Stephens Gas Unit
#1-X (d)
437450900
 .2369801% ORRI BPO
 .56875% WI APO
 .49765625% NRI APO

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-000816-000      Lowell Brawley          Argo Royalty Company   5-20-31     92        21
W. L. Brawley (776)         (Mineral Deed)
410462500
6.2500% RI

White Oak Field
(Cotton Valley)
M. C. Salter Gas Unit
417654500
2.7734375% RI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-005877-000     A tract of land out of the W. H.    AR-95702
Tuttle "C"  (s)                                   Castleberry Survey, Gregg County,   Farmout Agreement dated February 13, 1990 by
416585300                                         Texas, containing 12.36 acres       and between Atlantic Richfield Company, and C
100% WI                                           more or less, and more              W Resources, Inc. (d)
87.50% NRI                                        particularly described in that
                                                  certain Oil and Gas Lease dated     AR-95702-001
White Oak Field                                   January 16, 1931, recorded in       Declaration of Unitization & Designation of
(Cotton Valley)                                   Volume 68, Page 157, Deed           Gas Unit dated January 16, 1992.
Houston Stephens Gas Unit                         Records, Gregg County, Texas.
#1-X (d)                                                                              Private Radio License from Federal
437450900                                                                             Communications Commission to ARCO
 .2369801% ORRI BPO                                                                    Communications, Inc., dated December 16,
 .56875% WI APO                                                                        1992, File No. 0000000319451, Call Sign
 .49765625% NRI APO                                                                    KNEP883, Frequency 154.47875 MHZ


- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-000816-000     A tract of land out of the M.       AR-104964-000
W. L. Brawley (776)         (Mineral Deed)        Mann Survey, A-302, Upshur          Farmout (Oil & Gas Lease) dated May 20, 1993
410462500                                         County, Texas, and the Dolores      by and between Atlantic Richfield Company,
6.2500% RI                                        Sanches Survey, A-186, Gregg        Lessor, and R. Byron Roach, Lessee, as
                                                  County, Texas, and A-669, Upshur    referred to in Memorandum of Oil and Gas
White Oak Field                                   County,  Texas, containing 28.4     Lease dated May 20, 1993, recorded in Volume
(Cotton Valley)                                   acres more or less, and more        138, Page 242, Records of Upshur County,
M. C. Salter Gas Unit                             particularly described in Mineral   Texas and Volume 2521, Page 23, Records of
417654500                                         Deed dated May 20, 1931, recorded   Gregg County, Texas. (d)
2.7734375% RI                                     in Volume 92, Page 21, Deed
                                                  Records, Gregg County, Texas.       AR-104964-000-001
                                                                                      Pooling Declaration and Designation of Gas
                                                                                      Unit effective March 1, 1994.  (Chinn
                                                                                      Exploration Company-M. C. Salter Gas Unit)
                                                                                      (d)
</TABLE>


                                 Page 46 of 165
<PAGE>   73


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-000819-000      W. Q. Seale             Argo Royalty Co.       3-8-34      161       339
Wm. Cobb. (9232,875)        (Mineral Deed)
410500100
3.0270% RI

Wm. Cobb (A-356,950)
410503600
3.0273% RI
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-183-000811-000      T. C. Denton            Argo Royalty Company   4-28-31     84        352
Wheeler "A" (10880, 19100)  (Mineral Deed)
(s)
410977500
3.125%  RI

East Texas Field
Wheeler (419112, 403)  (s)                         T. C. Denton            Argo Royalty Company   4-29-31     85        241
410976700
3.125%  RI

East Texas Field
Wheeler (s)
415346400
3.125% RI

Glenwood Field
(Cotton Valley)
W. W. Wheeler  (d)
410559100
3.125%  RI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-000819-000     All that certain tract or parcel    Oil and Gas Lease dated August 6, 1931
Wm. Cobb. (9232,875)        (Mineral Deed)        of land in Gregg County, Texas,     recorded in Volume 100, Page 390, Deed
410500100                                         being a part of the Carl Rhodes     Records, Gregg County, Texas.
3.0270% RI                                        Survey and a part of the William
                                                  Cobb Homestead, as more
Wm. Cobb (A-356,950)                              particularly described in that
410503600                                         certain Mineral Deed dated March
3.0273% RI                                        8, 1934, recorded in Volume 161,
                                                  Page 339, Deed Records, Gregg
                                                  County, Texas.
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            42-183-000811-000     46.84 acres, more or less, out of   Oil and Gas Lease dated January 2, 1931,
Wheeler "A" (10880, 19100)  (Mineral Deed)        the David Ferguson Survey, and      recorded in Volume 67, Page 109, Deed
(s)                                               more particularly described in      Records, Gregg County, Texas.
410977500                                         that certain Mineral Deed dated
3.125%  RI                                        April 28, 1931, recorded in
                                                  Volume 84, Page 352, Deed
East Texas Field                                  Records, Gregg County, Texas.
Wheeler (419112, 403)  (s)
410976700                                         46.84 acres, more or less, out of
3.125%  RI                                        the David Ferguson Survey, and
                                                  more particularly described in
East Texas Field                                  that certain Mineral Deed dated
Wheeler (s)                                       April 29, 1931, recorded in
415346400                                         Volume 85, Page 241, Deed
3.125% RI                                         Records, Gregg County, Texas.

Glenwood Field
(Cotton Valley)
W. W. Wheeler  (d)
410559100
3.125%  RI
</TABLE>


                                 Page 47 of 165

<PAGE>   74



<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-000186-000      W. L. Cunningham,       Atlantic Oil           11-10-33    155       161
Wilson  (s)                 (Mineral Deed)         et al                   Producing Company
416855100
100% WI
 .3789% RI
87.5% NRI

Glenwood Field
(Cotton Valley)
J. W. Wilson #1 (d)         42-183-000186-00A      Ed Barnett              Atlantic Oil           8-4-33      152       289
410006900                   (Mineral Deed)                                 Producing Company
 .3789% RI
12.5% ORRI




                            42-183-000186-00B      O. M. Grisham           Atlantic Oil           10-10-33    152       516
                            (Mineral Deed)                                 Producing Company







                            42-183-003998-00A      Mattie Lockett,         Leland Fikes           3-30-31     75        449
                                                   et vir






                            42-183-003998-00B      Clyde Williams,         C. H. Ainsworth        4-24-31     85        177
                                                   et al


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-000186-000     A tract of land out of the          AR-105265-000
Wilson  (s)                 (Mineral Deed)        William C. Wakeland Survey,         Purchase and Sale Agreement dated October 6,
416855100                                         A-218, Gregg County, Texas,         1995 by and between East Texas Gathering
100% WI                                           containing 100 acres more or        Company, Atlantic Richfield Company, Sun Pipe
 .3789% RI                                         less, and being more particularly   Line Company and Sun Company, Inc. (s)
87.5% NRI                                         described in that certain Mineral
                                                  Deed dated November 10, 1933,       AR-105265-001
Glenwood Field                                    recorded in Volume 155, Page 161,   Crude Oil Buy/Sell Contract dated effective
(Cotton Valley)                                   Deed Records, Gregg County, Texas.  December 1, 1995 by and between ARCO Permian
J. W. Wilson #1 (d)                                                                   and Sun Company, Inc. (s)
410006900                   42-183-000186-00A     A tract of land out of the
 .3789% RI                   (Mineral Deed)        William C. Wakeland Survey,         AR-81381
12.5% ORRI                                        A-218, Gregg County, Texas,         Longview Gas Plant Oil Well Gas Purchase
                                                  containing 100 acres more or        Contract dated July 24, 1996, by and between
                                                  less, and being more particularly   ARCO Permian, seller and ARCO Permian, buyer,
                                                  described in that certain Mineral   as amended effective August 13, 1998. (s)
                                                  Deed dated August 4, 1933,
                                                  recorded in Volume 152, Page 289,   AR-105473
                                                  Deed Records, Gregg County, Texas.  Farmout Agreement dated effective February 1,
                                                                                      1996 by and between Atlantic Richfield
                            42-183-000186-00B     A tract of land out of the          Company, Wagner & Brown, Ltd., and C W
                            (Mineral Deed)        William C. Wakeland Survey,         Resources, Inc. (d)
                                                  A-218, Gregg County, Texas,
                                                  containing 100 acres more or        AR-95702
                                                  less, and being more particularly   Farmout Agreement dated February 13, 1990 by
                                                  described in that certain Mineral   and between Atlantic Richfield Company, and C
                                                  Deed dated October 10, 1933,        W Resources, Inc. (d)
                                                  recorded in Volume 152, Page 516,
                                                  Deed Records, Gregg County, Texas.  Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                            42-183-003998-00A     A tract of land out of the          Communications, Inc., dated December 16,
                                                  William C. Wakeland Survey, Gregg   1992, File No. 0000000319451, Call Sign
                                                  County, Texas, containing 100       KNEP883, Frequency 154.47875 MHZ
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  March 30, 1931, recorded in
                                                  Volume 75, Page 449, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-00B     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  April 24, 1931, recorded in
                                                  Volume 85, Page 177, Deed
                                                  Records, Gregg County, Texas.
</TABLE>


                                 Page 48 of 165
<PAGE>   75


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003998-00C      C. H. Ainsworth, et al  B. R. McLemore         5-12-31     File #    17351
Wilson  (s)
416855100

Glenwood Field
(Cotton Valley)
J. W. Wilson #1 (d)
410006900
(continued)                 42-183-003998-00D      Robert Robertson,       J. K. Lewis, et al     1-2-31      64        147
                                                   et ux






                            42-183-003998-00E      Sidney Wheeler, et ux   Paul D. Smith          2-19-31     70        415







                            42-183-003998-00F      Sidney Wheeler, et al   Paul D. Smith, et al   4-1-31      81        148







                            42-183-003998-00G      George Boyd, et ux      C. M. Beckett          4-3-31      79        222


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003998-00C     A tract of land out of the
Wilson  (s)                                       William C. Wakeland Survey, Gregg
416855100                                         County, Texas, containing 100
                                                  acres more or less, and more
Glenwood Field                                    particularly described in that
(Cotton Valley)                                   certain Oil and Gas Lease dated
J. W. Wilson #1 (d)                               May 12, 1931, recorded in File
410006900                                         #17351, Deed Records, Gregg
(continued)                                       County, Texas.

                            42-183-003998-00D     A part of the Wakeland H. R.
                                                  Survey, Gregg County, Texas,
                                                  containing 9 acres more or less,
                                                  and more particularly described
                                                  in that certain Oil and Gas Lease
                                                  dated January 2, 1931, recorded
                                                  in Volume 64, Page 147, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-00E     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  February 19, 1931, recorded in
                                                  Volume 70, Page 415, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-00F     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  April 1, 1931,  recorded in
                                                  Volume 81, Page 148, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-00G     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  April 3, 1931, recorded in Volume
                                                  79, Page 222, Deed Records, Gregg
                                                  County, Texas.
</TABLE>


                                 Page 49 of 165
<PAGE>   76

<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003998-00H      Frank Wilson, et al     C. M. Beckett          4-8-31      83        88
Wilson  (s)
416855100

Glenwood Field
(Cotton Valley)
J. W. Wilson #1 (d)
410006900
(continued)                 42-183-003998-00I      F. R. Wilson, et al     C. M. Beckett          6-17-31     95        335







                            42-183-003998-00J      Bethie Green, et al     A. G. Griffin          1-29-31     78        429







                            42-183-003998-00K      Harvey Turner, et ux    J. Brown Cutbirth      1-29-31     78        499








                            42-183-003998-00L      Margaret Ansley,        J. Brown Cutbirth      1-29-31     78        497
                                                   et vir

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003998-00H     A tract of land out of the
Wilson  (s)                                       William C. Wakeland Survey, Gregg
416855100                                         County, Texas, containing 100
                                                  acres more or less, and more
Glenwood Field                                    particularly described in that
(Cotton Valley)                                   certain Oil, Gas and Mining Lease
J. W. Wilson #1 (d)                               dated April 8, 1931, recorded in
410006900                                         Volume 83, Page 88, Deed Records,
(continued)                                       Gregg County, Texas.

                            42-183-003998-00I     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  June 17, 1931, recorded in Volume
                                                  95, Page 335, Deed Records, Gregg
                                                  County, Texas.

                            42-183-003998-00J     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  January 29, 1931, recorded in
                                                  Volume 78, Page 429, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-00K     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil, Gas and Mining Lease
                                                  dated January 29, 1931, recorded
                                                  in Volume 78, Page 499, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-00L     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil, Gas and Mining Lease
                                                  dated January 29, 1931, recorded
                                                  in Volume 78, Page 497, Deed
                                                  Records, Gregg County, Texas.
</TABLE>


                                 Page 50 of 165
<PAGE>   77


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003998-00M      Norman Wilson, et ux    J. Brown Cutbirth      5-14-31     90        208
Wilson  (s)
416855100

Glenwood Field
(Cotton Valley)
J. W. Wilson #1 (d)
410006900
(continued)
                            42-183-003998-00N      Norman Wilson, asm      Mrs. Johnny Bradley    1-13-31     63        375







                            42-183-003998-00O      Susie Williams, Grdn.   B. R. McLemore, et al  5-20-31     File #
                                                                                                              15897






                            42-183-003998-00P      Mahalie Williams,       B. R. McLemore         5-25-31     File #
                                                   et al                                                      17353






                            42-183-003998-00Q      Ledonia Johnson,        H. J. Horstman         5-6-31      84        502
                                                   et vir

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003998-00M     A tract of land out of the
Wilson  (s)                                       William C. Wakeland Survey, Gregg
416855100                                         County, Texas, containing 100
                                                  acres more or less, and more
Glenwood Field                                    particularly described in that
(Cotton Valley)                                   certain Oil and Gas Lease dated
J. W. Wilson #1 (d)                               May 14, 1931,  recorded in Volume
410006900                                         90, Page 208, Deed Records, Gregg
(continued)                                       County, Texas.


                            42-183-003998-00N     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  January 13, 1931, recorded in
                                                  Volume 63, Page 375, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-00O     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil, Gas and Mining Lease
                                                  dated May 20, 1931, recorded File
                                                  #15897, Deed Records, Gregg
                                                  County, Texas.

                            42-183-003998-00P     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil, Gas and Mining Lease
                                                  dated May 25, 1931, recorded File
                                                  #17353, Deed Records, Gregg
                                                  County, Texas.

                            42-183-003998-00Q     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  May 6, 1931, recorded in Volume
                                                  84, Page 502, Deed Records, Gregg
                                                  County, Texas.
</TABLE>


                                 Page 51 of 165

<PAGE>   78


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003998-00R      Julia W. White, et vir  H. J. Horstman         5-8-31      81        482
Wilson  (s)
416855100

Glenwood Field
(Cotton Valley)
J. W. Wilson #1 (d)
410006900
(continued)                 42-183-003998-00S      Callie W. Bowen, et al  H. J. Horstman         4-29-31     85        255







                            42-183-003998-00T      Lambert Chaffin, Gdn.   H. J. Horstman         5-6-31      84        501







                            42-183-003998-00U      Lambert Chaffin, et al  H. J. Horstman         4-30-31     83        295







                            42-183-003998-00V      James Sheppard          B. R. McLemore, et al  5-25-31     92        7

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003998-00R     A tract of land out of the
Wilson  (s)                                       William C. Wakeland Survey, Gregg
416855100                                         County, Texas, containing 100
                                                  acres more or less, and more
Glenwood Field                                    particularly described in that
(Cotton Valley)                                   certain Oil and Gas Lease dated
J. W. Wilson #1 (d)                               May 8, 1931, recorded Volume 81,
410006900                                         Page 482, Deed Records, Gregg
(continued)                                       County, Texas.

                            42-183-003998-00S     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  April 29, 1931, recorded in
                                                  Volume 85, Page 255, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-00T     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  May 6, 1931, recorded in Volume
                                                  84, Page 501, Deed Records, Gregg
                                                  County, Texas.

                            42-183-003998-00U     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  April 30, 1931, recorded in
                                                  Volume 83, Page 295, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-00V     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  May 25, 1931, recorded in Volume
                                                  92, Page 7, Deed Records, Gregg
                                                  County, Texas.
</TABLE>

                                 Page 52 of 165

<PAGE>   79


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003998-00W      Mogieree Jones Cannon   J. O. Ellinger         5-23-31     86        429
Wilson  (s)
416855100

Glenwood Field
(Cotton Valley)
J. W. Wilson #1 (d)
410006900
(continued)                 42-183-003998-00X      Andrew Jones, et al     J. O. Ehlinger         5-2-31      79        615







                            42-183-003998-00Y      Andrew Jones, et al     J. O. Ehlinger         5-15-31     89        167







                            42-183-003998-00Z      Elisha Williams, et al  Atlantic Oil           6-29-31     90        565
                                                                           Producing Company






                            42-183-003998-0AA      Joe Wheeler             Atlantic Oil           6-29-31     90        567
                                                                           Producing Company
<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003998-00W     A tract of land out of the
Wilson  (s)                                       William C. Wakeland Survey, Gregg
416855100                                         County, Texas, containing 100
                                                  acres more or less, and more
Glenwood Field                                    particularly described in that
(Cotton Valley)                                   certain Oil and Gas Lease dated
J. W. Wilson #1 (d)                               May 23, 1931, recorded in Volume
410006900                                         86, Page 429, Deed Records, Gregg
(continued)                                       County, Texas.

                            42-183-003998-00X     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  May 2, 1931, recorded in Volume
                                                  79, Page 615, Deed Records, Gregg
                                                  County, Texas.

                            42-183-003998-00Y     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  May 15, 1931,  recorded in Volume
                                                  89, Page 167, Deed Records, Gregg
                                                  County, Texas.

                            42-183-003998-00Z     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  June 29, 1931,  recorded in
                                                  Volume 90, Page 565, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-0AA     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  June 29, 1931,  recorded in
                                                  Volume 90, Page 567, Deed
                                                  Records, Gregg County, Texas.
</TABLE>


                                 Page 53 of 165

<PAGE>   80
<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-003998-0AB      Susie Williams, A-I-F   Atlantic Oil           7-30-31     99        217
Wilson  (s)                                                                Producing Company
416855100

Glenwood Field
(Cotton Valley)
J. W. Wilson #1 (d)
410006900
(continued)                 42-183-003998-0AC      John L. Keevil          Paul S. Adams          8-20-31     103       136







                            42-183-003998-0AD      Curley Jones            Atlantic Oil           10-20-31    110       56
                                                                           Producing Company






                            42-183-003998-0AE      Nathaniel Williams      Atlantic Oil           6-22-32     129       528
                                                                           Producing Company






                            42-183-003998-0AF      John C. Robbins, Jr.    Atlantic Oil           11-8-32     139       214
                                                                           Producing Company

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-003998-0AB     A tract of land out of the
Wilson  (s)                                       William C. Wakeland Survey, Gregg
416855100                                         County, Texas, containing 100
                                                  acres more or less, and more
Glenwood Field                                    particularly described in that
(Cotton Valley)                                   certain Oil and Gas Lease dated
J. W. Wilson #1 (d)                               July 30, 1931,  recorded in
410006900                                         Volume 99, Page 217, Deed
(continued)                                       Records, Gregg County, Texas.

                            42-183-003998-0AC     Two tracts of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 129.49
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  August 20, 1931, recorded in
                                                  Volume 103, Page 136, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-0AD     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil and Gas Lease dated
                                                  October 20, 1931, recorded in
                                                  Volume 110, Page 56, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-0AE     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil, Gas and Mining Lease
                                                  dated June 22, 1932, recorded in
                                                  Volume 129, Page 528, Deed
                                                  Records, Gregg County, Texas.

                            42-183-003998-0AF     A tract of land out of the
                                                  William C. Wakeland Survey, Gregg
                                                  County, Texas, containing 100
                                                  acres more or less, and more
                                                  particularly described in that
                                                  certain Oil, Gas and Mining Lease
                                                  dated November 8, 1932, recorded
                                                  in Volume 139, Page 214, Deed
                                                  Records, Gregg County, Texas.
</TABLE>


                                 Page 54 of 165

<PAGE>   81
<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-183-043531-000      C.L. Still, et ux       D. H. Byrd             11-28-30    62        209
C. L. Still (s)
416017700
 .0731% ORRI
(d)
2.658 Acres
28.430 Gross Acres








East Texas Field            None
Tooke "A"                   Small Royalty
413013800                   Interest
 .0014% RI
D. O. 42-183-031066


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            42-183-043531-000     A tract of land containing 28.43    AR-101556
C. L. Still (s)                                   acres, more or less, out of the     Operating Agreement dated December 4, 1931,
416017700                                         John Wilkinson Survey, A-224,       by and between Gulf Production Company,
 .0731% ORRI                                       Gregg County, Texas, and more       Operator, and Byrd-Frost, Inc.,
(d)                                               particularly described in that      Non-Operator. (s/d)
2.658 Acres                                       certain Assignment of Oil and Gas
28.430 Gross Acres                                Lease dated July 1, 1952,           AR-101564
                                                  recorded in Volume 382, Page 424,   Operating Agreement dated September 1, 1964,
                                                  Deed Records, Gregg County, Texas   by and between Tenneco Exploration Company,
                                                                                      Operator, and Continental Oil Company,
                                                                                      Non-Operator. (s/d)

                                                                                      AR-101547
                                                                                      Purchase and Sale Agreement dated November
                                                                                      15, 1982, between Conoco Inc. and Petro-Lewis
East Texas Field                                                                      Corporation. (s/d)
Tooke "A"                   None                  23.1 acres, more or less, out of
413013800                   Small Royalty         the W. G. Painter Survey, Gregg     AR-101548
 .0014% RI                   Interest              County, Texas, being same lands     Joint Operating Agreement dated January 1,
D. O. 42-183-031066                               described as Second Tract in        1983, by and between Conoco Inc. and
                                                  Assignment dated July 6, 1931,      Petro-Lewis Corporation. (s/d)
                                                  Recorded in Volume 119, Page 217
                                                  of Deed Records of Gregg County,    AR-101580
                                                  Texas                               Like-Kind Exchange Agreement dated June 1,
                                                                                      1992, by and between Atlantic Richfield
                                                                                      Company and Conoco Inc. (s/d)

                                                                                      Assignment and Bill of Sale dated February
                                                                                      17, 1989, by and between Conoco and Gene
                                                                                      Powell Investments Inc. (s)

                                                                                      Private Radio License from Federal
                                                                                      Communications Commission to ARCO
                                                                                      Communications, Inc., dated December 16,
                                                                                      1992, File No. 0000000319451, Call Sign
                                                                                      KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 55 of 165

<PAGE>   82


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Willow Springs Field        42-183-004015-00A      Ross Young, Guardian    Gulf Production        1-31-31     67        531
(Cotton Valley)                                    of the Estate of        Company
A. L. Bacle Gas Unit  (d)                          Lillian Green, et al
416326501
1.839164% ORRI



                            42-183-004015-00B      Arrenva Bacle           B. A. Skipper          4-25-30     4         392







                            42-183-004015-00C      C. G. Glasscock         Gulf Production        11-21-31    115       231
                                                                           Company






                            42-183-004015-00D      Rosa V. Glasscock,      Gulf  Production       11-21-31    115       226
                                                   et vir                  Company
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            None                   Unknown                 Unknown                ---         ---       ---
A. V. Bacle
416856100
D.O. 42-183-030910-000
Operator
Robinett Resources, Inc.
0.530749% RI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
Willow Springs Field        42-183-004015-00A     A tract of land out of the G. W.    AR-95702-004
(Cotton Valley)                                   Hooper Survey, Gregg County,        Declaration of Unitization and Designation of
A. L. Bacle Gas Unit  (d)                         Texas, containing 30.0 acres more   the A. L. Bacle Gas Unit, recorded in Volume
416326501                                         or less, and more particularly      2599, Page 256, Deed Records, Gregg Co.,
1.839164% ORRI                                    described in that certain Oil and   Texas.  (d)
                                                  Gas Lease dated January 31, 1931,
                                                  recorded in Volume 67, Page 531,    AR-95702
                                                  Deed Records, Gregg County, Texas.  Farmout Agreement dated February 13, 1990 by
                                                                                      and between Atlantic Richfield Company and C
                            42-183-004015-00B     A tract of land out of the G. W.    W Resources, Inc.  (d)
                                                  Hooper Survey, Gregg County,
                                                  Texas, containing 30.0 acres more
                                                  or less, and more particularly
                                                  described in that certain Oil and
                                                  Gas Lease dated April 25, 1930,
                                                  recorded in Volume 4, Page 392,
                                                  Deed Records, Gregg County, Texas.

                            42-183-004015-00C     A tract of land out of the G. W.
                                                  Hooper Survey, Gregg County,
                                                  Texas, containing 30.0 acres more
                                                  or less, and more particularly
                                                  described in that certain Oil and
                                                  Gas Lease dated November 21,
                                                  1931, recorded in Volume 115,
                                                  Page 231, Deed Records, Gregg
                                                  County, Texas.

                            42-183-004015-00D     A tract of land out of the G. W.
                                                  Hooper Survey, Gregg County,
                                                  Texas, containing 30.0 acres more
                                                  or less, and more particularly
                                                  described in that certain Oil and
                                                  Gas Lease dated November 21,
                                                  1931, recorded in Volume 115,
                                                  Page 226, Deed Records, Gregg
                                                  County, Texas.







- --------------------------- --------------------- ----------------------------------- ----------------------------------------------
East Texas Field            None                  7.32 acres, more or less, in the
A. V. Bacle                                       D. Sanches Survey, A-186, Gregg
416856100                                         County, Texas
D.O. 42-183-030910-000
Operator
Robinett Resources, Inc.
0.530749% RI
</TABLE>


                                 Page 56 of 165


<PAGE>   83
<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            None                   Unknown                 Unknown                ---         ---       ---
R. Christian
412225900
D.O. 42-183-031172-000
Operator
0.56020% RI

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            No Info.               No Info.                No Info.               ---         ---       ---
Flemister
413521100
D.O. 42-183-030960-000
Operator
M-C Production & Drilling
Company, Inc.
0.005900% RI


- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            No Info.               No Info.                No Info.               ---         ---       ---
F. C. Christian
415345600
D.O. 42-183-030973-000
Operator
Mustang Operating Company
0.196700% RI


- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            No Info.               No. Info.               No. Info.              ---         ---       ---
Dallas Caldwell
416348100
D.O. 42-183-018493-000
Operator
N. P. Powell Estate
0.013146% RI

East Texas Field            No Info.               No Info.                No Info.               ---         ---       ---
Caddie Fisher
415322700
D.O. 42-183-018494-000
Operator
N. P. Powell Estate
0.026292% RI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            None                  27 acres, more or less, out of
R. Christian                                      the G. W. Hooper Survey, Gregg
412225900                                         County, Texas
D.O. 42-183-031172-000
Operator
0.56020% RI

- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            No Info.              45 acres, more or less, located in
Flemister                                         the G. W. Hooper Survey, Gregg
413521100                                         County, Texas
D.O. 42-183-030960-000
Operator
M-C Production & Drilling
Company, Inc.
0.005900% RI


- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            No Info.              23.2 acres, more or less, out of
F. C. Christian                                   the G. W. Hooper Survey, Gregg
415345600                                         County, Texas
D.O. 42-183-030973-000
Operator
Mustang Operating Company
0.196700% RI


- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            No Info.              51.34 acres, more or less, out of
Dallas Caldwell                                   a 79.09 acre tract in the John
416348100                                         Ruddle Survey, Gregg County, Texas
D.O. 42-183-018493-000
Operator
N. P. Powell Estate
0.013146% RI


- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            No Info.              65.65 acres, more or less, being
Caddie Fisher                                     the East 65.65 acres out of a
415322700                                         148.71 acre tract in the John
D.O. 42-183-018494-000                            Ruddle Survey, Gregg County, Texas
Operator
N. P. Powell Estate
0.026292% RI
</TABLE>


                                 Page 57 of 165

<PAGE>   84
<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            Unkn                   Unkn                    Unkn                   ---         ---       ---
S. Carr "A"
413269600
D.O. 42-183-018432-000
Operator
CNS Enrgy
 .13021% RI

East Texas Field            Unkn.                  Unkn.                   Unkn.                  ---         --        ---
S. Carr "B"
418573100
D.O. 42-183-018433-000
Operator
Mustang Operating
 .13021% RI

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            Unkn.                  Unkn.                   Unkn.                  ---         ---       ---
J. A. Whitaker
415368500
D.O. 42-183-018472-000
Operator
4-Sight Operating Company
 .015479% RI

J. A. Whitaker -A-          Unkn.                  Unkn.                   Unkn.                  ---         ---       ---
414564000
D. O. 42-183-018478-000
Operator Unknown
 .015479% RI
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field
M. Lemaire (Small RI)
418989200
 .0391%

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.        DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
<S>                         <C>                   <C>                                 <C>
East Texas Field            Unkn                  West 2/3 of South acres of the
S. Carr "A"                                       Sam Carr 112 acre tract, situated
413269600                                         in M. McCurry Survey, based on
D.O. 42-183-018432-000                            Csghd Gas Contract between A. R.
Operator                                          Dillard, as Seller, and Sinclair,
CNS Enrgy                                         as Buyer, dated 7/27/1938, Gregg
 .13021% RI                                        County, Texas

East Texas Field            Unkn.
S. Carr "B"                                       North 16.5 acres of South 33
418573100                                         acres of North 100 acres of Sam
D.O. 42-183-018433-000                            Carr 112 acre tract situated in
Operator                                          M. McCurry Survey, based on Csghd
Mustang Operating                                 Gas Contract between A. R.
 .13021% RI                                        Dillars as Seller and Sinclair as
                                                  Buyer dated 7/27/1938, Gregg
                                                  County, Texas
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field            Unkn.                 N 1/4 of the East 4/14 of a 100
J. A. Whitaker                                    acre tract out of the Charles
415368500                                         Alexander Survey A-10, Gregg
D.O. 42-183-018472-000                            County, Texas
Operator
4-Sight Operating Company
 .015479% RI

J. A. Whitaker -A-          Unkn.
414564000                                         N/2 of the South 3/4 of the East
D. O. 42-183-018478-000                           4/14 of a 100 acre tract out of
Operator Unknown                                  the Charles Alexander Survey
 .015479% RI                                       A-10, Gregg County, Texas
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
East Texas Field                                  25.84 acres out of the H.
M. Lemaire (Small RI)                             Hathaway Survey, Gregg County,
418989200                                         Texas
 .0391%
- --------------------------  --------------------  ----------------------------------  ----------------------------------------------
</TABLE>

                                 Page 58 of 165

<PAGE>   85


                                   EXHIBIT "A"

 ATTACHED TO AND MADE A PART OF THAT CERTAIN PURCHASE AND SALE AGREEMENT DATED
   EFFECTIVE AS OF OCTOBER 1, 1999, BY AND BETWEEN ATLANTIC RICHFIELD COMPANY
              (ARCO) AND FUTURE ACQUISITION 1995, LTD. (PURCHASER)

 IN ADDITION TO ANY OTHER DEPTH LIMITATIONS EXPRESSED HEREIN, IT IS THE EXPRESS
   INTENTION TO LIMIT THE DESCRIPTIONS OF ARCO'S INTEREST (IF ANY), FROM THE
          SURFACE DOWN TO THE BASE OF THE DEEPEST PRODUCING FORMATION


RUSK COUNTY
<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056611-000      Abe Holt and Mary       W. P. Chandler         9-10-30     150       153
Abe Holt (s)                                       Holt, et al
416666300
100% WI
71.0227% NRI

Abe Holt "B" (s)
414231400
100% WI
87.5% NRI

South Kilgore Unit (s)
417539500
97.659398% WI
83.460188% NRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------   ----------------------------------  ---------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056611-000      A tract of land out of the Daniel   AR-105213
Abe Holt (s)                                       Clark Survey, Rusk County, Texas,   Acreage Exchange Agreement dated effective
416666300                                          containing 68.84 acres more or      April 1, 1995 by and between Paloma Partners,
100% WI                                            less, and more particularly         Ltd. and Atlantic Richfield Company. (s)
71.0227% NRI                                       described in that certain Oil and
                                                   Gas Lease dated September 10,       AR-105265-000
Abe Holt "B" (s)                                   1930, recorded in Volume 150,       Purchase and Sale Agreement dated October 6,
414231400                                          Page 153, Deed Records, Rusk        1995 by and between East Texas Gathering
100% WI                                            County, Texas.                      Company, Atlantic Richfield Company, Sun Pipe
87.5% NRI                                                                              Line Company and Sun Company, Inc. (s)
                                                   ONLY INSOFAR AS THE LEASE COVERS
South Kilgore Unit (s)                             THE RIGHTS FROM THE SURFACE TO      AR-105265-001
417539500                                          THE WOODBINE FORMATION AND          Crude Oil Buy/Sell Contract dated effective
97.659398% WI                                      PREFERENTIAL RIGHTS BELOW THE       December 1, 1995 by and between ARCO Permian
83.460188% NRI                                     BASE OF THE WOODBINE UNDER THE      and Sun Company, Inc. (s)
                                                   ABE HOLT "B" ONLY.
                                                                                       AR-105875
                                                                                       South Kilgore Unit and Unit Operating
                                                                                       Agreement dated effective May 1, 1997,
                                                                                       Atlantic Richfield Company, Operator. (s)

                                                                                       AR-105229
                                                                                       Salt Water Agreement
                                                                                       Permanent Water Contract dated September 25,
                                                                                       1935 from Mattie Bean to J. Beren.
                                                                                       Permanent Water Contract dated November 12,
                                                                                       1935 from Mattie Bean to J. Beren.
                                                                                       Permanent Water Contract dated June 3, 1936
                                                                                       from Mary Holt to J. Beren (AR-105230-001,
                                                                                       002 and 003) (s)

                                                                                       AR-105228
                                                                                       Farmout Agreement dated May 11, 1932 by and
                                                                                       between Max Rubin, J. Beren and Shell
                                                                                       Petroleum Corporation. (s)
</TABLE>


                                 Page 59 of 165
<PAGE>   86


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Continued from above        Continued from above   Continued from above    Continued from above   Continued   from      above
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------   ----------------------------------  ---------------------------------------------
<S>                         <C>                    <C>                                 <C>
Continued from above        Continued from above   Continued from above                AR-105414-001
                                                                                       Operating Agreement dated effective June 1,
                                                                                       1980 by and between Gibson Drilling Company,
                                                                                       Operator, and James H. Merritt, et al,
                                                                                       Non-Operator. (s)

                                                                                       AR-105583
                                                                                       Longview Gas Plant Gas Purchase Contract
                                                                                       dated November 1, 1997 by and between ARCO
                                                                                       Permian, Seller, and ARCO Permian, Buyer,
                                                                                       amended August 25, 1998. (s/d)

                                                                                       Private Radio License from Federal
                                                                                       Communications Commission to ARCO
                                                                                       Communications, Inc., dated December 16,
                                                                                       1992, File No. 000000319451, Call Sign
                                                                                       KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 60 of 165

<PAGE>   87


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056616-00A      C. O. Christian, Jr.    Bargo Energy Company   5-19-94     1875      686
C. O. Christian "B" (s)
412795100
100% WI
80.0% NRI


South Kilgore Unit (s)      42-401-056616-00B      Doris Christian Rea     Bargo Energy Company   5-19-94     1875      684
417539500
97.659398% WI
83.460188% NRI












                            42-401-056616-00C      Randall G. Rea, IE of   Bargo Energy Company   5-19-94     1872      629
                                                   the Estate of Patsy
                                                   C. McCrory
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-401-000861-000      Wildman Petroleum       Argo Royalty Company   1-30-32     212       173
Christian "C"               (Mineral Deed)         Corporation
#24202 (28667-000)
410495100
 .3906% RI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------   ----------------------------------  ---------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056616-00A      A tract of land out of the Daniel   AR-105213
C. O. Christian "B" (s)                            Clark Survey, Rusk County, Texas,   Acreage Exchange Agreement dated effective
412795100                                          containing 64.5 acres more or       April 1, 1995 by and between Paloma Partners,
100% WI                                            less, and more particularly         Ltd. and Atlantic Richfield Company. (s)
80.0% NRI                                          described in that certain
                                                   Memorandum of Oil and Gas Lease     AR-105875
                                                   dated May 19, 1994, recorded in     South Kilgore Unit and Unit Operating
                                                   Volume 1875, Page 686, Deed         Agreement dated effective May 1, 1997,
                                                   Records, Rusk County, Texas.        Atlantic Richfield Company, Operator. (s)

                                                   ONLY INSOFAR AS LEASES COVER        AR-105583
                                                   RIGHTS FROM THE SURFACE TO THE      Longview Gas Plant Gas Purchase Contract
                                                   BASE OF THE WOODBINE FORMATION.     dated November 1, 1997 by and between ARCO
                                                                                       Permian, Seller, and ARCO Permian, Buyer,
South Kilgore Unit (s)      42-401-056616-00B      A tract of land out of the Daniel   amended August 25, 1998. (s/d)
417539500                                          Clark Survey, Rusk County, Texas,
97.659398% WI                                      containing 64.5 acres more or       Private Radio License from Federal
83.460188% NRI                                     less, and more particularly         Communications Commission to ARCO
                                                   described in that certain           Communications, Inc., dated December 16,
                                                   Memorandum of Oil and Gas Lease     1992, File No. 0000000319451, Call Sign
                                                   dated May 19, 1994, recorded in     KNEP883, Frequency 154.47875 MHZ
                                                   Volume 1875, Page 684, Deed
                                                   Records, Rusk County, Texas.

                                                   ONLY INSOFR AS LEASES COVER
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION.

                            42-401-056616-00C      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 64.5 acres more or
                                                   less, and more particularly
                                                   described in that certain
                                                   Memorandum of Oil and Gas Lease
                                                   dated May 19, 1994, recorded in
                                                   Volume 1872, Page 629, Deed
                                                   Records, Rusk County, Texas.

                                                   ONLY INSOFAR AS LEASES COVER
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION.

- --------------------------  --------------------   ----------------------------------  ---------------------------------------------
East Texas Field            42-401-000861-000      A tract of land being a part of     Oil, Gas and Mineral Lease dated December 18,
Christian "C"               (Mineral Deed)         the W. W. Simms Survey, Rusk        1930 recorded in Volume 157, Page 583, Deed
#24202 (28667-000)                                 County, Texas, and more             Records, Rusk County, Texas.
410495100                                          particularly described by metes
 .3906% RI                                          and bounds in that certain
                                                   Mineral Deed dated January 30,
                                                   1932, recorded in Volume 212,
                                                   Page 173, Deed Records, Rusk
                                                   County, Texas.
</TABLE>


                                 Page 61 of 165


<PAGE>   88


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056697-00A      Drayton Jones and       R. H. Sowell           12-19-30    164       49
Jones, D. /Merrit-Jones (s) 42-401-056698-00A      wife, Dora Jones;
418840300                                          Lillie Roberson, and
83.125% WI                                         husband, Hosea
72.7343% NRI                                       Roberson; Opal Gene
                                                   Givens; Venia Sherow
D. Jones/Tallal-Jones (s)                          and husband, Thordia
4188501000                                         Sherow; Jessie
100.0% WI                                          Blackman, wife of
75.0% NRI                                          Tootsom Blackman,
                                                   Deceased
South Kilgore Unit (s)
417539500                   42-401-056697-00B      Opal Gene Givens, a     B. G.Beckam            2-6-31      181       1
97.659398% WI               42-401-056698-00B      feme sole, and T. J.
83.460188% NRI                                     Givens




                            42-401-056697-00C      Opal Gene Givens, a     J. H. Merritt          8-14-35     271       436
                            42-401-056698-00C      feme sole, and T. J.
                                                   Givens




                            42-401-056697-00D                              E. W. Merritt          10-20-34    257       144
                            42-401-056698-00D       Oscar Askew



<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------   ----------------------------------  ---------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056697-00A      A tract of land out of the Daniel   AR-105414-001
Jones, D. /Merrit-Jones (s) 42-401-056698-00A      Clark Survey, A-162, Rusk County,   Operating Agreement dated effective June 1,
418840300                                          Texas, containing 13.72 acres       1980 by and between Gibson Drilling Company,
83.125% WI                                         more or less, and more              Operator,  and James H. Merritt, et al,
72.7343% NRI                                       particularly described in           Non-Operator.  (s)
                                                   Leasehold Partition dated 2-6-35
D. Jones/Tallal-Jones (s)                          as tracts 2, 3 & 4 recorded Vol.    AR-105875
4188501000                                         262, Page 52, Deed Records, Rusk    South Kilgore Unit and Unit Operating
100.0% WI                                          County, Texas.                      Agreement dated effective May 1, 1997,
75.0% NRI                                                                              Atlantic Richfield Company, Operator. (s)

                                                                                       AR-105583
South Kilgore Unit (s)      42-401-056697-00B      A tract of land out of the Daniel   Longview Gas Plant Gas Purchase Contract
417539500                   42-401-056698-00B      Clark Survey, A-162, Rusk County,   dated November 1, 1997 by and between ARCO
97.659398% WI                                      Texas, containing 13.72 acres       Permian, Seller, and ARCO Permian, Buyer,
83.460188% NRI                                     more or less, and more              amended August 25, 1998. (s/d)
                                                   particularly described in
                                                   Leasehold Partition dated 2-6-35    Private Radio License from Federal
                                                   as tracts 2, 3 & 4 recorded Vol.    Communications Commission to ARCO
                                                   262, Page 52, Deed Records, Rusk    Communications, Inc., dated December 16,
                                                   County, Texas.                      1992, File No. 0000000319451, Call Sign
                                                                                       KNEP883, Frequency 154.47875 MHZ

                            42-401-056697-00C      A tract of land out of the Daniel
                            42-401-056698-00C      Clark Survey, A-162, Rusk County,
                                                   Texas, containing 13.72 acres
                                                   more or less, and more
                                                   particularly described in
                                                   Leasehold Partition dated 2-6-35
                                                   as tracts 2, 3 & 4 recorded Vol.
                                                   262, Page 52, Deed Records, Rusk
                                                   County, Texas.

                            42-401-056697-00D      A tract of land out of the Daniel
                            42-401-056698-00D      Clark Survey, A-162, Rusk County,
                                                   Texas, containing 13.72 acres
                                                   more or less, and more
                                                   particularly described in
                                                   Leasehold Partition dated 2-6-35
                                                   as tracts 2, 3 & 4 recorded Vol.
                                                   262, Page 52, Deed Records, Rusk
                                                   County, Texas.

                                                   ONLY INSOFAR AS LEASES COVER
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION
</TABLE>


                                 Page 62 of 165
<PAGE>   89


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056697-00E      Opal Gene Givens, a     J. H. Merrit           9-24-34     254       607
Jones, D. /Merrit-Jones (s) 42-401-056698-00E      feme sole, and T. J.
418840300                                          Givens

D. Jones/Tallal-Jones (s)
4188501000

South Kilgore Unit (s)
417539500                   42-401-056697-00F      Oscar Smith and wife,   J. H. Merritt          11-30-35    276       495
(continued)                 42-401-056698-00F      Opal Gene Smith,
                                                   formerly Opal Gene
                                                   Givens




                            42-401-056697-00G      G. W. Morgan, et al     R. H. Sowell           7-9-36      293       351
                            42-401-056698-00G

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-401-006262-000      D.F. Giles, et al       Van McPhail            9-9-30      151       542
Giles "C" Well No. 1-C  (s)
41081161C
12.5%  ORRI
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-401-000858-000      Ralph A. Johnston       Argo Royalty Company   10-6-31     189       355
J. F. Mason (21)            (Mineral Deed)
410762400
1.3540% RI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------  --------------------   ----------------------------------  ---------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056697-00E      A tract of land out of the Daniel
Jones, D. /Merrit-Jones (s) 42-401-056698-00E      Clark Survey, A-162, Rusk County,
418840300                                          Texas, containing 13.72 acres
                                                   more or less, and more
D. Jones/Tallal-Jones (s)                          particularly described in
4188501000                                         Leasehold Partition dated 2-6-35
                                                   as tracts 2, 3 & 4 recorded Vol.
South Kilgore Unit (s)                             262, Page 52, Deed Records, Rusk
417539500                                          County, Texas.
(continued)
                            42-401-056697-00F      A tract of land out of the Daniel
                            42-401-056698-00F      Clark Survey, A-162, Rusk County,
                                                   Texas, containing 13.72 acres
                                                   more or less, and more
                                                   particularly described in
                                                   Leasehold Partition dated 2-6-35
                                                   as tracts 2, 3 & 4 recorded Vol.
                                                   262, Page 52, Deed Records, Rusk
                                                   County, Texas.

                            42-401-056697-00G      A tract of land out of the Daniel
                            42-401-056698-00G      Clark Survey, A-162, Rusk County,
                                                   Texas, containing 13.72 acres
                                                   more or less, and more
                                                   particularly described in
                                                   Leasehold Partition dated 2-6-35
                                                   as tracts 2, 3 & 4 recorded Vol.
                                                   262, Page 52, Deed Records, Rusk
                                                   County, Texas.


                                                   ONLY INSOFAR AS LEASES COVER
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION.
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
East Texas Field            42-401-006262-000      Two tracts of land out of the M.
Giles "C" Well No. 1-C  (s)                        J. Pru Survey, Rusk County,
41081161C                                          Texas, containing 121 acres more
12.5%  ORRI                                        or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated September 9,
                                                   1930, recorded in Volume 151,
                                                   Page 542, Deed Records, Rusk
                                                   County, Texas.
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
East Texas Field            42-401-000858-000      A tract of land out of the J. B.    Oil, Gas and Mineral Lease dated October 31,
J. F. Mason (21)            (Mineral Deed)         Cadena League, Rusk County,         1929, recorded in Volume 140, Page 600, Deed
410762400                                          Texas, and more particularly        Records, Rusk County, Texas.
1.3540% RI                                         described in that certain Mineral
                                                   Deed dated October 6, 1931,
                                                   recorded in Volume 189, Page 355,
                                                   Deed Records, Rusk County, Texas.
</TABLE>


                                 Page 63 of 165


<PAGE>   90


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Jared Field                 42-401-000051-001      W. H. McCord, et ux,    R. M. Weaver, Jr.      11-2-29     145       301
(Rodessa)                                          Mary E. (Lizzie)
J. M. Price #1 (d)                                 McCord
415719200
0.2538% ORRI

Let Field
(Travis Peak)
Mason Heirs #1 (d)
415031700
1.565% RI
17.5% ORRI BPO
20.0% ORRI APO

Jared Field
(Rodessa)
Mason #1 Gas Unit (d)
415029500
1.565% RI
17.5% ORRI BPO
20.0% ORRI APO


- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-401-000851-000      James C. Nelson         Argo Royalty Company   2-6-31      167       381
J. R. Beall                 (Mineral Deed)
410433100
 .3906% RI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
Jared Field                 42-401-000051-001      A tract of land out of the Juana    AR-95707
(Rodessa)                                          Berger DeCadena League, Rusk        Farmout Agreement dated April 3, 1990 by and
J. M. Price #1 (d)                                 County, Texas, and more             between Atlantic Richfield Company and Gene
415719200                                          particularly described in that      Powell Investments, Inc.
0.2538% ORRI                                       certain Oil and Gas Lease dated
                                                   November 2, 1929, recorded in       AR-100503
Let Field                                          Volume 145, Page 301, Deed          Limited Sublease of Oil, Gas and Mineral
(Travis Peak)                                      Records, Rusk County, Texas.        Lease dated March 13, 1992 by and between
Mason Heirs #1 (d)                                                                     Atlantic Richfield Company and Triple J
415031700                                                                              Investments, Inc.  recorded in Volume 1769,
1.565% RI                                                                              Page 759, Land Records, Rusk County, Texas.
17.5% ORRI BPO                                                                         (d)
20.0% ORRI APO
                                                                                       AR-101621
Jared Field                                                                            Purchase and Sale Agreement effective January
(Rodessa)                                                                              1, 1993 by and between Atlantic Richfield
Mason #1 Gas Unit (d)                                                                  Company and Madera Production Company.  (s)
415029500
1.565% RI                                                                              AR-95707
17.5% ORRI BPO                                                                         Farmout Agreement dated April 3, 1990 by and
20.0% ORRI APO                                                                         between Atlantic Richfield Company and Gene
                                                                                       Powell Investments, Inc.  (d)

                                                                                       Unit Declaration filed April 12, 1990 in
                                                                                       Volume 1684, Page 307, Deed Records, Rusk
                                                                                       County, Texas
                                                                                       (J.M. Price #1) (d)





- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
East Texas Field            42-401-000851-000      A tract of land out of the Wm. P.
J. R. Beall                 (Mineral Deed)         Chisum Survey, Gregg and Rusk
410433100                                          Counties, Texas, containing 180
 .3906% RI                                          acres more or less, and more
                                                   particularly described by metes
                                                   and bounds in that certain
                                                   Mineral Deed dated February 6,
                                                   1931, recorded in Volume 167,
                                                   Page 381, Deed Records, Rusk
                                                   County, Texas.
</TABLE>


                                 Page 64 of 165

<PAGE>   91


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056617-00A      Bessie M. & Booker T.   Natural Petroleum      11-17-34    257       344
John Henderson  (s)                                Mayfield, husband and   Company
417778900                                          wife
100% WI
87.500% NRI

South Kilgore Unit (s)
417539500
97.659398% WI               42-401-056617-00B      Minnie Holt, joined     Natural Petroleum      11-17-34    257       327
83.460188% NRI                                     by her husband, Lovie   Company
                                                   Holt; John Henderson;
                                                   Bennie M. Henderson;
                                                   Albert Henderson;
                                                   Arlena Henderson, a
                                                   feme sole
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-401-000853-000      M. C. DeGuerin and      Argo Royalty Company   5-1-31      171       630
M. C. DeGuerin (22)         (Mineral Deed)         wife, Mrs. Maude
410533800                                          DeGuerin
1.5625% RI

M. C. DeGuerin
417260400
1.5625% RI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056617-00A      A tract of land, containing 50      AR-105213
John Henderson  (s)                                acres more or less, out of the      Acreage Exchange Agreement dated effective
417778900                                          Daniel Clark Survey, A-162, Rusk    April 1, 1995 by and between Paloma Partners,
100% WI                                            County, Texas, and more             Ltd. and Atlantic Richfield Company. (s)
87.500% NRI                                        particularly described by metes
                                                   and bounds in Oil and Gas Lease     AR-105583
South Kilgore Unit (s)                             dated November 17, 1934, recorded   Longview Gas Plant Gas Purchase Contract
417539500                                          in Volume 257, Page 344, Deed       dated November 1, 1997 by and between ARCO
97.659398% WI                                      Records, Rusk County, Texas.        Permian, Seller, and ARCO Permian, Buyer.
83.460188% NRI                                                                         (s/d)
                            42-401-056617-00B      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,   AR-105265-001
                                                   Texas, and more particularly        Crude Oil Buy/Sell Contract dated effective
                                                   described by metes and bounds in    December 1, 1995 by and between ARCO Permian
                                                   Oil and Gas Lease dated November    and Sun Company, Inc. (s)
                                                   17, 1934, recorded in Volume 257,
                                                   Page 327, Deed Records, Rusk        AR-105265-000
                                                   County, Texas.                      Purchase and Sale Agreement dated October 6,
                                                                                       1995 by and between East Texas Gathering
                                                   ONLY INSOFAR AS LEASES COVER THE    Company, Atlantic Richfield Company, Sun Pipe
                                                   RIGHTS FROM THE SURFACE TO THE      Line Company and Sun Company, Inc. (s)
                                                   BASE OF THE WOODBINE FORMATION.
                                                                                       AR-105875
                                                                                       South Kilgore Unit and Unit Operating
                                                                                       Agreement dated effective May 1, 1997,
                                                                                       Atlantic Richfield Company, Operator. (s)

                                                                                       Private Radio License from Federal
                                                                                       Communications Commission to ARCO
                                                                                       Communications, Inc., dated December 16,
                                                                                       1992, File No. 0000000319451, Call Sign
                                                                                       KNEP883, Frequency 154.47875 MHZ

- --------------------------- ---------------------- ----------------------------------- ---------------------------------------------
East Texas Field            42-401-000853-000      A tract of land being a part of
M. C. DeGuerin (22)         (Mineral Deed)         the J. B. Cadena League, Rusk
410533800                                          County, Texas, containing 158.0
1.5625% RI                                         acres more or less, and being
                                                   more particularly described in
M. C. DeGuerin                                     that certain Deed dated May 1,
417260400                                          1931, recorded in Volume 171,
1.5625% RI                                         Page 630, Deed Records, Rusk
                                                   County, Texas.
</TABLE>


                                 Page 65 of 165
<PAGE>   92


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056618-000      Major Kennedy, et ux    G. W. Hindman          9-13-30     152       259
M. Kennedy  (s)
417535200
100% WI
87.50% NRI

South Kilgore Unit (s)
417539500
97.659398% WI
83.460188% NRI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056618-000      A tract of land out of the Daniel   AR-105213
M. Kennedy  (s)                                    Clark Survey, Rusk County, Texas,   Exchange Agreement dated April 20, 1995 by
417535200                                          containing 20.0 acres more or       and between Atlantic Richfield Company and
100% WI                                            less, and more particularly         Paloma Partners, Ltd. (s)
87.50% NRI                                         described in that certain Oil and
                                                   Gas Lease dated September 13,       AR-33093
South Kilgore Unit (s)                             1930, recorded in Volume 152,       Electric Service Contract dated June 24, 1969
417539500                                          Page 259, Deed Records, Rusk        by and between Southwestern Electric Power
97.659398% WI                                      County, Texas.                      Company and Atlantic Richfield Company. (s)
83.460188% NRI
                                                   ONLY INSOFAR AS THE LEASE COVERS    AR-64597
                                                   THE RIGHTS FROM THE SURFACE DOWN    Salt Water Disposal Agreement dated June 28,
                                                   TO THE BASE OF THE WOODBINE         1982, by and between ARCO Oil and Gas Company
                                                   FORMATION.                          and East Texas Salt Water Disposal Company.

                                                                                       Agreement dated December 14, 1992 and
                                                                                       recorded in Volume 1838, Page 787, Deed
                                                                                       Records, Rusk County, Texas., by and between
                                                                                       M.A.S. Operators Company and I. B. Beren.

                                                                                       AR-105583
                                                                                       Longview Gas Plant Gas Purchase Contract
                                                                                       dated November 1, 1997 by and between ARCO
                                                                                       Permian, Seller, and ARCO Permian, Buyer,
                                                                                       amended August 25, 1998. (s/d)

                                                                                       AR-105875
                                                                                       South Kilgore Unit and Unit Operating
                                                                                       Agreement dated effective May 1, 1997,
                                                                                       Atlantic Richfield Company, Operator. (s)

                                                                                       Private Radio License from Federal
                                                                                       Communications Commission to ARCO
                                                                                       Communications, Inc., dated December 16,
                                                                                       1992, File No. 0000000319451, Call Sign
                                                                                       KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 66 of 165
<PAGE>   93


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-000045-001      Major Kennedy, et ux    R. W. Weaver, Jr.      10-7-30     152       399
Major Kennedy "B"  (s)
414492900
100% WI
87.5% NRI













Major Kennedy "C"  (s)      42-401-000045-001      Major Kennedy, et ux    R. W. Weaver, Jr       10-7-30     152       399
414494500
100% WI
87.5% NRI

Major Kennedy "D"  (s)
414496100
100% WI
87.5% NRI

South Kilgore Unit (s)
417539500
97.659398% WI
83.460188% NRI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-000045-001      A tract of land out of the Daniel   AR-105265-001
Major Kennedy "B"  (s)                             Clark Survey, Rusk County, Texas,   Crude Oil Buy/Sell Contract dated effective
414492900                                          containing 100 acres, more or       December 1, 1995 by and between ARCO Permian
100% WI                                            less, described as beginning at a   and Sun Company, Inc. (s)
87.5% NRI                                          point on the North line of said
                                                   Daniel Clark Susrvey, 3292' West    AR-105265-000
                                                   of the NE/corner of said Survey;    Purchase and Sale Agreement dated October 6,
                                                   Thence West with said survey line   1995 by and between East Texas Gathering
                                                   1306.5 vrs. to the NW/corner of     Company, Atlantic Richfield Company, Sun Pipe
                                                   the Daniel Clark Survey; Thence     Line Company and Sun Company, Inc.  (s)
                                                   South with the West boundary line
                                                   of the survey 643'; Thence Eat      Private Radio License from Federal
                                                   3,646'; Thence N 1 degrees E 643'   Communications Commission to ARCO
                                                   to the place of beginning; being    Communicatioins, Inc., dated December 16,
                                                   part of the same land conveyed by   1992, File No. 0000000319451, Call Sign
                                                   J. S. Bean, et ux to Major          KNEP883, Frequency 154.47875 MHZ
                                                   Kennedy by deed dated 11/1/27,
                                                   recorded in Vol. 137, Page 265 of   AR-105213
                                                   the Deed Records of Rusk County.    Acreage Exchange Agreement dated effective
                                                                                       April 1, 1995 by and between Paloma Partners,
                                                                                       Ltd. and Atlantic Richfield Company.  (s)

Major Kennedy "C"  (s)      42-401-000045-001      A tract of land out of the Daniel
414494500                                          Clark Survey, Rusk County, Texas,   AR-82521
100% WI                                            containing 106.6 acres more or      Casing Leak Allowable Transfer dated
87.5% NRI                                          less, and more particularly         effective October 1, 1986 by and between
                                                   described in that certain Oil and   Atlantic Richfield Company and 4-Sight
Major Kennedy "D"  (s)                             Gas Lease dated October 7, 1930,    Operating Company, Inc.  (s)
414496100                                          recorded in Volume 152, Page 399,
100% WI                                            Deed Records, Rusk County, Texas.   AR-82513
87.5% NRI                                                                              Purchase and Sale Agreement dated effective
                                                   ONLY INSOFAR AS LEASE COVERS THE    October 1, 1986 by and between Atlantic
South Kilgore Unit (s)                             RIGHTS FROM THE SURFACE TO THE      Richfield Company and 4-Sight Operating
417539500                                          BASE OF THE WOODBINE FORMATION      Company, Inc.  (s)
97.659398% WI
83.460188% NRI                                                                         AR-105875
                                                                                       South Kilgore Unit and Unit Operating
                                                                                       Agreement dated effective May 1, 1997,
                                                                                       Atlantic Richfield Company, Operator. (Except
                                                                                       Major Kennedy "B") (s)

                                                                                       AR-98412
                                                                                       Longview Gas Plant Gas Purchase Contract
                                                                                       dated January 1, 1997, by and between ARCO
                                                                                       Permian, Seller and ARCO Permian, Buyer, as
                                                                                       amended effective August 1, 1998 (applies to
                                                                                       Major Kennedy "B" only)

                                                                                       AR-105583
                                                                                       Longview Gas Plant Gas Purchase Contract
                                                                                       dated November 1, 1997 by and between ARCO
                                                                                       Permian, Seller, and ARCO Permian, Buyer,
                                                                                       amended August 25, 1998.  (s/d)
</TABLE>


                                 Page 67 of 165

<PAGE>   94
<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-000045-00B      G. W. Morgan            Sinclair Oil Corp.     5-29-39     330       633
Major Kennedy "C"  (s)
414494500
100% WI
87.5% NRI

South Kilgore Unit (s)
417539500
97.659398% WI               42-401-000045-00C      Savannah Butts,         Webb Kennedy           5-29-39     329       367
83.460188% NRI                                     et vir Levy Butts






                            42-401-000045-00D      Emma Montgomery,        Webb Kennedy           5-29-39     329       370
                                                   et vir






                            42-401-000045-00E      Arthur Kennedy          Webb Kennedy           5-29-39     329       365


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-000045-00B      A tract of land out of the Daniel   AR-105265-001
Major Kennedy "C"  (s)                             Clark Survey, Gregg County,         Crude Oil Buy/Sell Contract dated effective
414494500                                          Texas, containing 20.0 acres more   December 1, 1995 by and between ARCO Permian
100% WI                                            or less, and more particularly      and Sun Company, Inc. (s)
87.5% NRI                                          described in that certain Oil and
                                                   Gas Lease dated May 29, 1939,       AR-105265-000
South Kilgore Unit (s)                             recorded in Volume 330, Page 633,   Purchase and Sale Agreement dated October 6,
417539500                                          Deed Records, Rusk County, Texas.   1995 by and between East Texas Gathering
97.659398% WI                                                                          Company, Atlantic Richfield Company, Sun Pipe
83.460188% NRI              42-401-000045-00C      A tract of land out of the Daniel   Line Company and Sun Company, Inc. (s)
                                                   Clark Survey, Gregg County,
                                                   Texas, containing 20.0 acres more   AR-105213
                                                   or less, and more particularly      Acreage Exchange Agreement dated effective
                                                   described in that certain Oil and   April 1, 1995 by and between Paloma Partners,
                                                   Gas Lease dated May 29, 1939,       Ltd. and Atlantic Richfield Company. (s)
                                                   recorded in Volume 329, Page 367,
                                                   Deed Records, Rusk County, Texas.   AR-82513
                                                                                       Purchase and Sale Agreement dated effective
                            42-401-000045-00D      A tract of land out of the Daniel   October 1, 1986 by and between Atlantic
                                                   Clark Survey, Gregg County,         Richfield Company and 4-Sight Operating
                                                   Texas, containing 20.0 acres more   Company, Inc. (s)
                                                   or less, and more particularly
                                                   described in that certain Oil and   AR-82521
                                                   Gas Lease dated May 29, 1939,       Casing Leak Allowable Transfer effective
                                                   recorded in Volume 329, Page 370,   October 1, 1986 by and between Atlantic
                                                   Deed Records, Rusk County, Texas.   Richfield Company and 4-Sight Operating
                                                                                       Company, Inc. (s)
                            42-401-000045-00E      A tract of land out of the Daniel
                                                   Clark Survey, Gregg County, Texas   AR-105875
                                                   containing 20.0 acres more or       Unit Agreement (South Kilgore Unit) dated
                                                   less, and more particularly         effective May 1, 1997, Atlantic Richfield
                                                   described in that certain Oil and   Company, Operator. (s)
                                                   Gas Lease dated May 29, 1939,
                                                   recorded in Volume 329, Page 365,
                                                   Deed Records, Rusk County, Texas.   AR-105583
                                                                                       Longview Gas Plant Gas Purchase Contract
                                                   ONLY INSOFAR AS LEASES COVER THE    dated November 1, 1997 by and between ARCO
                                                   RIGHTS FROM THE SURFACE TO THE      Permian, Seller, and ARCO Permian, Buyer,
                                                   BASE OF THE WOODBINE FORMATION.     amended August 25, 1998. (s/d)

                                                                                       Private Radio License from Federal
                                                                                       Communications Commission to ARCO
                                                                                       Communications, Inc., dated December 16,
                                                                                       1992, File No. 0000000319451, Call Sign
                                                                                       KNEP883, Frequency 154.47875 MHZ
</TABLE>

                                 Page 68 of 165

<PAGE>   95


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-025033-000      Nat B. Bean, et al      J. E. Mowinckle        2-17-31     177       385
Mary B. Bean  (s)
412270400
100% WI
87.5% NRI


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-025033-000      40.95 acres out of the Carlos       AR-105265-001
Mary B. Bean  (s)                                  Bean 43.2 acre tract in the Jacob   Crude Oil Buy/Sell Contract dated effective
412270400                                          Lewis Survey, Rusk County, Texas,   December 1, 1995 by and between ARCO Permian
100% WI                                            and more particularly described     and Sun Company, Inc. (s)
87.5% NRI                                          by metes and bounds in that
                                                   certain Oil, Gas and Mineral        AR-105265-000
                                                   Lease dated February 17, 1931,      Purchase and Sale Agreement dated October 6,
                                                   recorded in Volume 177, Page 385    1995 by and between East Texas Gathering
                                                   Deed Records, Rusk County, TX       Company, Atlantic Richfield Company, Sun Pipe
                                                                                       Line Company and Sun Company, Inc.  (s)

                                                                                       AR-101649
                                                                                       Pipe Line Operating Agreement dated April 7,
                                                                                       1993 between Atlantic Richfield Company,
                                                                                       Producer, and ARCO Pipe Line Company.  (s)

                                                                                       AR-98412
                                                                                       Longview Gas Plant Gas Purchase Contract
                                                                                       dated January 1, 1997, by and between ARCO
                                                                                       Permian, seller and ARCO Permian, buyer, as
                                                                                       amended effective August 1, 1998 (s)

                                                                                       Private Radio License from Federal
                                                                                       Communications Commission to ARCO
                                                                                       Communications, Inc., dated December 16,
                                                                                       1992, File No. 0000000319451, Call Sign
                                                                                       KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 69 of 165
<PAGE>   96


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-00A      George Eason            Bargo Energy Company   4-29-95     1915      100
Mayfield A (s)
415035000
62.50% WI
54.6876% NRI

South Kilgore Unit (s)
417539500
97.659398% WI               42-401-056612-00B      Barbara J. Oxford       Bargo Energy Company   4-29-95     1915      92
83.460188% NRI

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-00A      A tract of land out of the Daniel   AR-105875
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,   South Kilgore Unit and Unit Operating
415035000                                          containing 10 acres more or less,   Agreement dated effective May 1, 1997,
62.50% WI                                          and more particularly described     Atlantic Richfield Company, Operator. (s)
54.6876% NRI                                       in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in   AR-105265-000
South Kilgore Unit (s)                             Volume 1915, Page 100, Official     Purchase and Sale Agreement dated October 6,
417539500                                          Public Records, Rusk County,        1995 by and between East Texas Gathering
97.659398% WI                                      Texas.                              Company, Atlantic Richfield Company, Sun Pipe
83.460188% NRI                                                                         Line Company and Sun Company, Inc. (s)
                            42-401-056612-00B      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,   AR-105265-001
                                                   containing 10 acres more or less,   Crude Oil Buy/Sell Contract dated effective
                                                   and more particularly described     December 1, 1995 by and between ARCO Permian
                                                   in that certain Oil and Gas Lease   and Sun Company, Inc. (s)
                                                   dated April 29, 1995, recorded in
                                                   Volume 1915, Page 92, Official      AR-105213
                                                   Public Records, Rusk County,        Exchange Agreement dated April 20, 1995 by
                                                   Texas.                              and between Atlantic Richfield Company and
                                                                                       Paloma Partners, Ltd. (s)
                                                   ONLY INSOFAR AS SAID LEASES COVER
                                                   THE RIGHTS FROM THE SURFACE TO      Private Radio License from Federal
                                                   THE BASE OF THE WOODBINE            Communications Commission to ARCO
                                                   FORMATION.                          Communications, Inc., dated December 16,
                                                                                       1992, File No. 0000000319451, Call Sign
                                                                                       KNEP883, Frequency 154.47875 MHZ
</TABLE>


                                 Page 70 of 165
<PAGE>   97


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-00C      Lois Freeman            Bargo Energy Company   4-29-95     1913      819
Mayfield A (s)
415035000

South Kilgore Unit  (s)
417539500
(continued)

                            42-401-056612-00D      Marcia Lou Braly        Bargo Energy Company   4-29-95     1914      427







                            42-401-056612-00E      Frank J. Budde, Ind.    Bargo Energy Company   4-29-95     1913      816
                                                   And as Trustee of the
                                                   Frank and Marilyn
                                                   Budde Family Trust




                            42-401-056612-00F      Thomas Mayfield         Bargo Energy Company   4-29-95     1914      414







                            42-401-056612-00G      Ruby Duvall Atchley     Bargo Energy Company   4-29-95     1914      410

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-00C      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 10 acres more or less,
                                                   and more particularly described
South Kilgore Unit  (s)                            in that certain Oil and Gas Lease
417539500                                          dated April 29, 1995, recorded in
(continued)                                        Volume 1913, Page 819, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00D      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1914, Page 427, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00E      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1913, Page 816, Deed
                                                   Records, Rusk County, Texas.

                            42-401-056612-00F      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1914, Page 414, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                             42-401-056612-00G     A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1914, Page 410, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                                                   ONLY INSOFAR AS SAID LEASES COVER
                                                   THE RIGHTS FROM THE SURFACE TO
                                                   THE BASE OF THE WOODBINE
                                                   FORMATION.
</TABLE>


                                 Page 71 of 165

<PAGE>   98


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-00H      Freya Jean Atchley      Bargo Energy Company   4-29-95     1914      412
Mayfield A (s)                                     Bolton
415035000

South Kilgore Unit  (s)
417539500
(continued)

                            42-401-056612-00I      J. Mike Rowan           Bargo Energy Company   5-17-95     1914      418







                            42-401-056612-00J      Baton Corporation       Bargo Energy Company   4-29-95     1914      423







                            42-401-056612-00K      John J. Dozier          Bargo Energy Company   4-29-95     1914      421







                            42-401-056612-00L      Goodrich-Malloy Trust   Atlantic Richfield     3-29-96     1964      542
                                                                           Company

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-00H      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 10 acres more or less,
                                                   and more particularly described
South Kilgore Unit  (s)                            in that certain Oil and Gas Lease
417539500                                          dated April 29, 1995, recorded in
(continued)                                        Volume 1914, Page 412, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00I      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated May 17, 1995, recorded in
                                                   Volume 1914, Page 418, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00J      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1914, Page 423, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00K      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1914, Page 421, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00L      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 142.0 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated March 29, 1996,
                                                   recorded in Volume 1964, Page
                                                   542, Official Public Records,
                                                   Rusk County, Texas.

                                                   ONLY INSOFAR AS SAID LEASES COVER
                                                   THE RIGHTS FROM THE SURFACE TO
                                                   THE BASE OF THE WOODBINE
                                                   FORMATION.
</TABLE>

                                 Page 72 of 165
<PAGE>   99


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-00M      Robert R. Goodrich      Atlantic Richfield     5-16-96     1964      550
Mayfield A (s)                                                             Company
415035000

South Kilgore Unit  (s)
417539500
(continued)






                            42-401-056612-00N      John F. Malloy, Ind.    Atlantic Richfield     5-16-96     1964      557
                                                   And as Agent for John   Company
                                                   Goodrich Malloy,
                                                   Margaret C. Malloy
                                                   and Paul Malloy




                            42-401-056612-00O      Irvin J. Jaffe          Bargo Energy Company   4-29-95     1915      94







                            42-401-056612-00P      Sonya Faye Atchley      Bargo Energy Company   4-29-95     1915      96
                                                   Morgan, et al





                            42-401-056612-00Q      Sonya Faye Atchley      Bargo Energy Company   4-29-95     1915      98
                                                   Morgan, et al


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-00M      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 107.0 acres more or
                                                   less, and more particularly
South Kilgore Unit  (s)                            described in that certain Oil and
417539500                                          Gas Lease dated May 16, 1995,
(continued)                                        recorded in Volume 1964, Page
                                                   550, Official Public Records,
                                                   Rusk County, Texas.

                                                   Only insofar as said lease covers
                                                   the rights from the surface to
                                                   the Base of the Woodbine
                                                   formation.

                            42-401-056612-00N      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 107.0 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 16, 1996,
                                                   recorded in Volume 1964, Page
                                                   557, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-00O      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1915, Page 94, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00P      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1915, Page 96, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00Q      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1915, Page 98, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                                                   ONLY INSOFAR AS SAID LEASES COVER
                                                   THE RIGHTS FROM THE SURFACE TO
                                                   THE BASE OF THE WOODBINE
                                                   FORMATION.
</TABLE>


                                 Page 73 of 165
<PAGE>   100


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-00R      Billie Jean Ashworth    Bargo Energy Company   4-29-95     1917      110
Mayfield A (s)
415035000

South Kilgore Unit  (s)
417539500
(continued)

                            42-401-056612-00S      Betty Jean Smith        Bargo Energy Company   4-29-95     1917      125







                            42-401-056612-00T      Myrtle V. Freeman,      Bargo Energy Company   4-29-95     1917      114
                                                   Individually and as
                                                   Trustee





                            42-401-056612-00U      Margaret M. Rivers      Bargo Energy Company   4-29-95     1917      739







                            42-401-056612-00V      Mrs. Marie W. Jaffe     Bargo Energy  Company  4-29-95     1917      119


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-00R      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 10 acres more or less,
                                                   and more particularly described
South Kilgore Unit  (s)                            in that certain Oil and Gas Lease
417539500                                          dated April 29, 1995, recorded in
(continued)                                        Volume 1917, Page 110, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00S      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1917, Page 125, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00T      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1917, Page 114, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00U      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1917, Page 739, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00V      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1917, Page 119, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                                                   ONLY INSOFAR AS SAID LEASES COVER
                                                   THE RIGHTS FROM THE SURFACE TO
                                                   THE BASE OF THE WOODBINE
                                                   FORMATION.
</TABLE>


                                 Page 74 of 165

<PAGE>   101
<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-00W      Lenox C. Ligon, Ind.    Bargo Energy Company   5-16-95     1919      803
Mayfield A (s)                                     And as IE of the
415035000                                          Estate of Faith
                                                   Carlton Brock,
South Kilgore Unit  (s)                            Deceased
417539500
(continued)

                            42-401-056612-00X      Beverly Heller          Bargo Energy Company   4-29-95     1917      116







                            42-401-056612-00Y      Herschel H. Jaffee      Bargo Energy Company   4-29-95     1917      121







                            42-401-056612-00Z      Kathleen Rasansky       Bargo Energy Company   4-29-95     1917      123







                            42-401-056612-0AA      Mrs. Louise Adelman     Bargo Energy Company   4-29-95     1917      112


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-00W      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 10 acres more or less,
                                                   and more particularly described
South Kilgore Unit  (s)                            in that certain Oil and Gas Lease
417539500                                          dated May 16, 1995, recorded in
(continued)                                        Volume 1919, Page 803, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00X      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1917, Page 116, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00Y      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1917, Page 121, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-00Z      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1917, Page 123, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-0AA      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1917, Page 112, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                                                   ONLY INSOFAR AS SAID LEASES COVER
                                                   THE RIGHTS FROM THE SURFACE TO
                                                   THE BASE OF THE WOODBINE
                                                   FORMATION.
</TABLE>


                                 Page 75 of 165
<PAGE>   102


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-0AB      Leo Scull, Jr.          Bargo Energy Company   6-12-95     1917      741
Mayfield A (s)
415035000

South Kilgore Unit  (s)
417539500
(continued)


                            42-401-056612-0AC      Pacific Enterprises     Bargo Energy Company   6-1-95      1917      746
                                                   ABC Corporation







                            42-401-056612-OAD      John Reese Mayfield     Bargo Energy Company   4-29-95     1917      744








                            42-401-056612-OAE      Linda Wheat             Atlantic Richfield     9-23-97     2038      602
                                                                           Company







                            42-401-056612-0AF      Marie Donworth          Bargo Energy Company   4-29-95     1920      330

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-0AB      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 107 acres more or
                                                   less, and more particularly
South Kilgore Unit  (s)                            described in that certain Oil and
417539500                                          Gas Lease dated June 12, 1995,
(continued)                                        recorded in Volume 1917, Page
                                                   741, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0AC      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated June 1, 1995, recorded in
                                                   Volume 1917, Page 746, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-OAD      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated April 29, 1995, recorded in
                                                   Volume 1917, Page 744, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-OAE      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 107 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated September 23,
                                                   1997, recorded in Volume 2038,
                                                   Page 602, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056612-0AF      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10.0 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated April 29, 1995,
                                                   recorded in Volume 1920, Page
                                                   330, Official Public Records,
                                                   Rusk County, Texas.

                                                   ONLY INSOFAR AS SAID LEASES COVER
                                                   THE RIGHTS FROM THE SURFACE TO
                                                   THE BASE OF THE WOODBINE
                                                   FORMATION.
</TABLE>


                                 Page 76 of 165
<PAGE>   103


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-OAG      Robert Glassenberg      Bargo Energy Company   4-29-95     1921      443
Mayfield A (s)
415035000

South Kilgore Unit  (s)
417539500
(continued)






                            42-401-056612-0AH      Lois Freeman            Atlantic Richfield     10-27-96    1997      10
                                                                           Company







                            42-401-056612-0AI      Pacific Enterprises     Atlantic Richfield     6-28-97     2027      316
                                                   ABC Corporation         Company







                            42-401-056612-0AJ      Myrtle V. Freeman,      Atlantic Richfield     10-27-96    1999      655
                                                   Ind. And as Trustee     Company
                                                   under the Will of
                                                   James Holman Freeman





                            42-401-056612-0AK      Petco Limited           Atlantic Richfield     12-6-96     1999      657
                                                                           Company
<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-OAG      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 10 acres more or less,
                                                   and more particularly described
South Kilgore Unit  (s)                            in that certain Oil and Gas Lease
417539500                                          dated April 29, 1995, recorded in
(continued)                                        Volume 1921, Page 443, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                                                   ONLY INSOFAR AS SAID LEASES COVER
                                                   THE RIGHTS FROM THE SURFACE TO
                                                   THE BASE OF THE WOODBINE
                                                   FORMATION.

                            42-401-056612-0AH      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 27, 1996, recorded
                                                   in Volume 1997, Page 10, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                             42-401-056612-0AI     A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 107.0 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated June 28, 1997,
                                                   recorded in Volume 2027, Page 316
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0AJ      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 27, 1996, recorded
                                                   in Volume 1999, Page 655,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0AK      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated December 6, 1996, recorded
                                                   in Volume 1999, Page 657,
                                                   Official Public Records, Rusk
                                                   County, Texas.
</TABLE>


                                 Page 77 of 165
<PAGE>   104


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-0AL      John Reese Mayfield     Atlantic Richfield     10-27-96    1992      562
Mayfield A (s)                                                             Company
415035000

South Kilgore Unit  (s)
417539500
(continued)


                            42-401-056612-0AM      Marie Donworth          Atlantic Richfield     10-27-96    1992      714
                                                                           Company






                            42-401-056612-0AN      Margaret M. Rivers      Atlantic Richfield     12-3-96     1992      721
                                                                           Company







                            42-401-056612-0AO      George Eason            Atlantic Richfield     10-27-96    1992      716
                                                                           Company






                            42-401-056612-0AP      Barbara J. Oxford       Atlantic Richfield     10-30-96    1992      718
                                                                           Company

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-0AL      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 132 acres more or
                                                   less, and more particularly
South Kilgore Unit  (s)                            described in that certain Oil and
417539500                                          Gas Lease dated October 27, 1996,
(continued)                                        recorded in Volume 1992, Page
                                                   562, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0AM      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 27, 1996, recorded
                                                   in Volume 1992, Page 714,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0AN      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 132 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated December 3, 1996,
                                                   recorded in Volume 1992, Page
                                                   721, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0AO      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 27, 1996, recorded
                                                   in Volume 1992, Page 716,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0AP      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 30, 1996, recorded
                                                   in Volume 1992, Page 718,
                                                   Official Public Records, Rusk
                                                   County, Texas.
</TABLE>


                                 Page 78 of 165
<PAGE>   105


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-0AQ      Marcia L. Braly         Atlantic Richfield     10-27-96    1992      711
Mayfield A (s)                                                             Company
415035000

South Kilgore Unit  (s)
417539500
(continued)

                            42-401-056612-0AR      Irvin J. Jaffe          Atlantic Richfield     10-30-96    1987      143
                                                                           Company






                            42-401-056612-0AS      Thomas Mayfield         Atlantic Richfield     10-27-96    1987      145
                                                                           Company






                            42-401-056612-0AT      Sonya Faye Atchley      Atlantic Richfield     10-28-96    1987      147
                                                   Morgan, Ind., et al     Company






                            42-401-056612-0AU      Steven Lyle Morgan      Atlantic Richfield     10-28-96    1987      149
                                                                           Company

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-0AQ      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 97 acres more or less,
                                                   and more particularly described
South Kilgore Unit  (s)                            in that certain Oil and Gas Lease
417539500                                          dated October 27, 1996, recorded
(continued)                                        in Volume 1992, Page 711,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0AR      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 30, 1996, recorded
                                                   in Volume 1987, Page 143,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0AS      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 27, 1996, recorded
                                                   in Volume 1987, Page 145,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0AT      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 28, 1996, recorded
                                                   in Volume 1987, Page 147,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0AU      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 28, 1996, recorded
                                                   in Volume 1987, Page 149,
                                                   Official Public Records, Rusk
                                                   County, Texas.
</TABLE>


                                 Page 79 of 165
<PAGE>   106


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-0AV      Freya Jean Atchley      Atlantic Richfield     10-28-96    1987      141
Mayfield A (s)                                     Bolton and Cathy Ann    Company
415035000                                          Bolton Gill

South Kilgore Unit  (s)
417539500
(continued)

                            42-401-056612-0AW      Bllie Jean Ashworth     Atlantic Richfield     10-30-96    1987      139
                                                                           Company






                            42-401-056612-0AX      Louise Adelman          Atlantic Richfield     10-27-96    1987      137
                                                                           Company






                            42-401-056612-0AY      Kathleen Rasansky       Atlantic Richfield     10-30-96    1987      151
                                                                           Company






                            42-401-056612-0AZ      Maude Wagnon Rushing    Atlantic Richfield     11-4-96     1987      153
                                                                           Company

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-0AV      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 97 acres more or less,
                                                   and more particularly described
South Kilgore Unit  (s)                            in that certain Oil and Gas Lease
417539500                                          dated October 28, 1996, recorded
(continued)                                        in Volume 1987, Page 141,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0AW      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 30, 1996, recorded
                                                   in Volume 1987, Page 139,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0AX      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 27, 1996, recorded
                                                   in Volume 1987, Page 137,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0AY      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 30, 1996, recorded
                                                   in Volume 1987, Page 151,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0AZ      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 107 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 4, 1996,
                                                   recorded in Volume 1987, Page
                                                   153, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>


                                 Page 80 of 165
<PAGE>   107


<TABLE>
<CAPTION>



FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-0BA      Robert Glassenberg      Atlantic Richfield     10-27-96    1994      43
Mayfield A (s)                                                             Company
415035000

South Kilgore Unit  (s)
417539500
(continued)

                            42-401-056612-0BB      Beverly Heller          Atlantic Richfield     10-27-96    1994      45
                                                                           Company






                            42-401-056612-0BC      Marie W. Jaffe          Atlantic Richfield     1-8-97      1997      698
                                                                           Company






                            42-401-056612-0BD      Herschel H. Jaffe       Atlantic Richfield     1-8-97      1997      700
                                                                           Company






                            42-401-056612-0BE      Carolyn Mayfield        Atlantic Richfield     11-5-96     1997      702
                                                   Warfield                Company

<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-0BA      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 97 acres more or less,
                                                   and more particularly described
South Kilgore Unit  (s)                            in that certain Oil and Gas Lease
417539500                                          dated October 27, 1996, recorded
(continued)                                        in Volume 1994, Page 43, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-0BB      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated October 27, 1996, recorded
                                                   in Volume 1994, Page 45, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-0BC      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated January 8, 1997, recorded
                                                   in Volume 1997, Page 698,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0BD      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 97 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated January 8, 1997, recorded
                                                   in Volume 1997, Page 700,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0BE      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 107 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 5, 1996,
                                                   recorded in Volume 1997, Page
                                                   702, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>


                                 Page 81 of 165
<PAGE>   108


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-0BF      Bertina Mayfield Hill   Atlantic Richfield     11-5-96     1997      696
Mayfield A (s)                                                             Company
415035000

South Kilgore Unit  (s)
417539500
(continued)


                            42-401-056612-0BG      Sandra Mayfield Allen   Atlantic Richfield     11-5-96     1997      694
                                                                           Company







                            42-401-056612-0BH      Richard Clouse          Atlantic Richfield     1-30-97     2009      573
                                                                           Company







                            42-401-056612-0BK      Cole C.  McCrory        Atlantic Richfield     9-16-97     2050      137
                                                                           Company






                            42-401-056612-0BL      Patrick S. McCrory      Atlantic Richfield     9-16-97     2050      139
                                                                           Company


<CAPTION>
FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.         DESCRIPTION OF LANDS               SUBJECT TO:
- --------------------------  --------------------   ---------------------------------- ----------------------------------------------
<S>                         <C>                    <C>                                <C>
East Texas Field            42-401-056612-0BF      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 107 acres more or
                                                   less, and more particularly
South Kilgore Unit  (s)                            described in that certain Oil and
417539500                                          Gas Lease dated November 5, 1996,
(continued)                                        recorded in Volume 1997, Page
                                                   696, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0BG      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 107 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 5, 1996,
                                                   recorded in Volume 1997, Page
                                                   694, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0BH      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 31.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 30, 1997,
                                                   recorded in Volume 1997, Page
                                                   573, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0BK      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated September 16, 1997,
                                                   recorded in Volume 2050, Page
                                                   137, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0BL      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated September 16, 1997,
                                                   recorded in Volume 2050, Page
                                                   139, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>


                                 Page 82 of 165

<PAGE>   109
<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-0BM      C. O. Christian, Jr.    Atlantic Richfield     9-16-97     2050      129
Mayfield A (s)                                                             Company
415035000

South Kilgore Unit  (s)
417539500
(continued)

                            42-401-056612-0BN      Doris C. Rea            Atlantic Richfield     9-16-97     2050      140
                                                                           Company






                            42-401-056612-0BO      Don R. Lewis            Atlantic Richfield     10-29-97    2046      8
                                                                           Company






                            42-401-056612-0BP      Darcus Palmer           Atlantic Richfield     11-7-97     2044      787
                                                                           Company







                            42-401-056612-0BQ      Leo Scull, Jr.          Atlantic Richfield     9-23-97     2043      595
                                                                           Company
<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056612-0BM      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 10 acres more or less,
                                                   and more particularly described
South Kilgore Unit  (s)                            in that certain Oil and Gas Lease
417539500                                          dated September 16, 1997,
(continued)                                        recorded in Volume 2050, Page
                                                   129, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0BN      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 10 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated September 16, 1997,
                                                   recorded in Volume 2050, Page
                                                   140, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0BO      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 142.0 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated October 29, 1997,
                                                   recorded in Volume 2046, Page 8,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056612-0BP      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 11.07 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 7, 1997,
                                                   recorded in Volume 2044, Page
                                                   787, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0BQ      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 108.66 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated September 23,
                                                   1997, recorded in Volume 2043,
                                                   Page 595, Official Public
                                                   Records, Rusk County, Texas.
</TABLE>


                                 Page 83 of 165


<PAGE>   110

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-0BR      Lois Lorine Gault       Atlantic Richfield     9-15-97     2040      596
Mayfield A (s)                                     Deborde                 Company
415035000

South Kilgore Unit  (s)
417539500
(continued)


                            42-401-056612-0BS      Davis Duke Gault        Atlantic Richfield     10-23-97    2044      789
                                                                           Company






                            42-401-056612-0BT      Kathryn Bishop          Atlantic Richfield     10-22-97    2042      822
                                                                           Company






                            42-401-056612-0BU      Eugene M. Massad and    Atlantic Richfield     10-22-97    2044      784
                                                   Edmond M. Massad,       Company
                                                   Trustee





                            42-401-056612-0BV      Genevieve Day Fletcher  Atlantic Richfield     11-19-97    2056      463
                                                                           Company

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056612-0BR      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 107 acres more or
                                                   less, and more particularly
South Kilgore Unit  (s)                            described in that certain Oil and
417539500                                          Gas Lease dated September 15,
(continued)                                        1997, recorded in Volume 2040,
                                                   Page 596, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056612-0BS      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 107 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated October 23, 1997,
                                                   recorded in Volume 2044, Page
                                                   789, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0BT      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 100.56 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated October 22, 1997,
                                                   recorded in Volume 2042, Page
                                                   822, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0BU      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 100.56 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated October 22, 1997,
                                                   recorded in Volume 2044, Page
                                                   784, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0BV      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 28.0 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 19,
                                                   1997, recorded in Volume 2056,
                                                   Page 463, Official Public
                                                   Records, Rusk County, Texas.
</TABLE>

                                 Page 84 of 165


<PAGE>   111

<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-0BW      James Depreist          Atlantic Richfield     11-19-97    2056      461
Mayfield A (s)                                                             Company
415035000

South Kilgore Unit  (s)
417539500
(continued)


                            42-401-056612-0BX      Retha Fisher,           Atlantic Richfield     11-19-97    2047      439
                                                   Individually and as     Company
                                                   Independent Executrix






                            42-401-056612-0BY      Lenora Sneed Oil Co.    Atlantic Richfield     11-22-97    2047      442
                                                                           Company







                            42-401-056612-0BZ      Choctaw Energy Ltd.     Atlantic Richfield     5-15-98     2078      784
                                                   Partners                Company

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056612-0BW      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, Rusk County, Texas,
415035000                                          containing 28.0 acres more or
                                                   less, and more particularly
South Kilgore Unit  (s)                            described in that certain Oil and
417539500                                          Gas Lease dated November 19,
(continued)                                        1997, recorded in Volume 2056,
                                                   Page 461, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056612-0BX      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 28.0 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 19,
                                                   1997, recorded in Volume 2047,
                                                   Page 439, Official Public
                                                   Records, Rusk County, Texas.


                            42-401-056612-0BY      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 100.56 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 22,
                                                   1997, recorded in Volume 2047,
                                                   Page 442, Official Public
                                                   Records, Rusk County, Texas.


                            42-401-056612-0BZ      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 105.57 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 15, 1998,
                                                   recorded in Volume 2078, Page
                                                   784, Official Public Records,
                                                   Rusk County, Texas.

                                                   Only insofar as said lease covers
                                                   the rights from the surface to
                                                   the Base of the Woodbine
                                                   formation.
</TABLE>


                                 Page 85 of 165

<PAGE>   112

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-0CA      George W. Dozier        Atlantic Richfield     10-31-97    2081      590
Mayfield A (s)                                                             Company
415035000

South Kilgore Unit  (s)
417539500
(continued)


                            42-401-056612-0CB      Betty Jean Smith        Atlantic Richfield     5-26-98     2081      624
                                                                           Company







                            42-401-056612-0CC      Louise Adelman          Atlantic Richfield     5-21-98     2081      575
                                                                           Company







                            42-401-056612-0CD      Beverly Heller          Atlantic Richfield     5-21-98     2081      595
                                                                           Company







                            42-401-056612-0CE      Kathleen Rasanky        Atlantic Richfield     5-21-98     2081      614
                                                                           Company

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056612-0CA      A tract of land out of the Daniel
Mayfield A (s)                                     Clark Survey, A-162, Rusk County,
415035000                                          Texas, containing 142.0 acres
                                                   more or less, and more
South Kilgore Unit  (s)                            particularly described in that
417539500                                          certain Oil and Gas Lease dated
(continued)                                        October 31, 1997, recorded in
                                                   Volume 2081, Page 590, Official
                                                   Public Records, Rusk County,
                                                   Texas.


                            42-401-056612-0CB      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 97  acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 26, 1998,
                                                   recorded in Volume 2081, Page
                                                   624, Official Public Records,
                                                   Rusk County, Texas.


                            42-401-056612-0CC      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 35 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 21, 1998,
                                                   recorded in Volume 2081, Page
                                                   575, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0CD      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 35 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 21, 1998,
                                                   recorded in Volume 2081, Page
                                                   595, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056612-0CE      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 35 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 21, 1998,
                                                   recorded in Volume 2081, Page
                                                   614, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>


                                 Page 86 of 165

<PAGE>   113


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056612-0CF      Lamar Mayfield          Atlantic Richfield     11-3-97     2081      569
Mayfield A (s)                                                             Company
415035000

South Kilgore Unit  (s)
417539500
(continued)


                            42-401-056612-0CG      Jo Evelyn Simon, et al  Atlantic Richfield     11-3-97     2081      566
                                                                           Company







                            42-401-056612-0CH      Ruth D. Sandifer        Atlantic Richfield     5-20-98     2081      620
                                                                           Company







                            42-401-056612-0CI      Frank Hudson, Receiver  Atlantic Richfield     8-7-98      2087      728
                                                                           Company


<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056612-0CF      Two tracts of land out of the
Mayfield A (s)                                     Daniel Clark Survey, A-162, Rusk
415035000                                          County, Texas, containing 45
                                                   acres more or less, and more
South Kilgore Unit  (s)                            particularly described in that
417539500                                          certain Oil and Gas Lease dated
(continued)                                        November 3, 1997, recorded in
                                                   Volume 2081, Page 569, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-0CG      Two tracts of land out of the
                                                   Daniel Clark Survey, A-162, Rusk
                                                   County, Texas, containing 45
                                                   acres more or less, and more
                                                   particularly described in that
                                                   certain Oil and Gas Lease dated
                                                   November 3, 1997, recorded in
                                                   Volume 2081, Page 566, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056612-0CH      Two tracts of land out of the
                                                   Daniel Clark Survey, A-162, Rusk
                                                   County, Texas, containing 45
                                                   acres more or less, and more
                                                   particularly described in that
                                                   certain Oil and Gas Lease dated
                                                   May 20, 1998, recorded in Volume
                                                   2081, Page 620, Official Public
                                                   Records, Rusk County, Texas.


                            42-401-056612-0CI      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 139.89 acres
                                                   more or less, and more
                                                   particularly described in that
                                                   certain Oil and Gas Lease dated
                                                   August 7, 1998, recorded in
                                                   Volume 2087, Page 728, Official
                                                   Public Records, Rusk County,
                                                   Texas.
</TABLE>

                                 Page 87 of 165


<PAGE>   114


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056615-00A      Betty Jo Peterson       Bargo Energy Company   10-24-94    1889      277
Mayfield, S. E.
415040600
100.0% WI
81.25% NRI

South Kilgore Unit
417539500




                            42-401-056615-00B      H. B. Pyle              Atlantic Richfield     9-1-97      2042      493
                                                                           Company


<CAPTION>



FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056615-00A      A tract of land out of the Daniel   AR-105875
Mayfield, S. E.                                    Clark Survey, Rusk County, Texas,   South Kilgore Unit and Unit Operating
415040600                                          containing 33.4 acres more or       Agreement dated effective May 1, 1997,
100.0% WI                                          less, and more particularly         Atlantic Richfield Company, Operator.  (s)
81.25% NRI                                         described in that certain Oil and
                                                   Gas Lease dated October 24, 1994,   AR-105583
South Kilgore Unit                                 recorded in Volume 1889, Page       Longview Gas Plant Gas Purchase Contract
417539500                                          277, Deed Records, Rusk County,     dated November 1, 1997 by and between ARCO
                                                   Texas.                              Permian, Seller, and ARCO Permian, Buyer,
                                                                                       amended August 25, 1998.  (s/d)
                                                   ONLY INSOFAR AS LEASE COVERS
                                                   RIGHTS FROM THE SURFACE TO THE      Private Radio License from Federal
                                                   BASE OF THE WOODBINE FORMATION.     Communications Commission to ARCO
                                                                                       Communications, Inc., dated December 16,
                            42-401-056615-00B      A tract of land out of the Daniel   1992, File No. 0000000319451, Call Sign
                                                   Clark Survey, Rusk County, Texas,   KNEP883, Frequency 154.47875 MHZ
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated September 1,
                                                   1997, recorded in Volume 2042,
                                                   Page 493, Official Public
                                                   Records, Rusk County, Texas.
</TABLE>


                                 Page 88 of 165

<PAGE>   115

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056615-00C      Betty Springer Reeds    Atlantic Richfield     8-15-96     1968      663
Mayfield, S. E.                                                            Company
415040600

South Kilgore Unit
417539500
(continued)


                            42-401-056615-00F      Bettye V. Gray          Bargo Energy Company   9-21-94     1910      608








                            42-401-056615-00G      Rita Fay Garrett        Bargo Energy Company   4-26-95     1913      821








                            42-401-056615-00H      James W. Palmer         Bargo Energy Company   8-29-94     1889      273








                            42-401-056615-00I      Anita S. Anderson       Atlantic Richfield     7-15-98     2084      634
                                                                           Company
<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056615-00C      A tract of land out of the Daniel
Mayfield, S. E.                                    Clark Survey, Rusk County, Texas,
415040600                                          containing 33.4 acres more or
                                                   less, and more particularly
South Kilgore Unit                                 described in that certain Oil and
417539500                                          Gas Lease dated August 15, 1996,
(continued)                                        recorded in Volume 1968, Page
                                                   663, Official Public Records,
                                                   Rusk County, Texas.   (ALL DEPTHS)

                            42-401-056615-00F      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated September 21,
                                                   1994, recorded in Volume 1910,
                                                   Page 608, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056615-00G      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated April 26, 1995,
                                                   recorded in Volume 1913, Page
                                                   821, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056615-00H      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated August 29, 1994,
                                                   recorded in Volume 1889, Page
                                                   273, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056615-00I      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.21 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated July 15, 1998,
                                                   recorded in Volume 2084, Page
                                                   634, Official Public Records,
                                                   Rusk County, Texas.

                                                   ONLY INSOFAR AS LEASES COVER
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION.

</TABLE>

                                 Page 89 of 165

<PAGE>   116


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056615-00J      Roy T. Anderson         Atlantic Richfield     7-15-98     2084      637
Mayfield, S. E.                                                            Company
415040600

South Kilgore Unit
417539500
(continued)


                            42-401-056615-00K      Mary Bell Cherry        Steve  J. Hughes       6-1-93      1871      642








                            42-401-056615-00L      A. Roland Fisher        Steve  J. Hughes       6-10-94     1871      644








                            42-401-056615-00M      Octavious Fisher        Steve  J. Hughes       6-1-94      1871      648





                            42-401-056615-00N      James Depreist, sole    Steve  J. Hughes       12-22-93    1918      491
                                                   heir of Orphus Fisher
<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056615-00J      A tract of land out of the Daniel
Mayfield, S. E.                                    Clark Survey, Rusk County, Texas,
415040600                                          containing 33.21 acres more or
                                                   less, and more particularly
South Kilgore Unit                                 described in that certain Oil and
417539500                                          Gas Lease dated July 15, 1998,
(continued)                                        recorded in Volume 2084, Page
                                                   637, Official Public Records,
                                                   Rusk County, Texas.  (ALL DEPTHS)

                            42-401-056615-00K      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated June 1, 1993,
                                                   recorded in Volume 1871, Page
                                                   642, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056615-00L      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated June 10, 1994,
                                                   recorded in Volume 1871, Page
                                                   644, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056615-00M      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated June 1, 1994,
                                                   recorded in Volume 1871, Page
                                                   648, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056615-00N      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated December 22,
                                                   1993, recorded in Volume 1918,
                                                   Page 491, Official Public
                                                   Records, Rusk County, Texas.

                                                   ONLY INSOFAR AS LEASES COVER
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION.
</TABLE>


                                 Page 90 of 165

<PAGE>   117

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056615-00O      David S. Meredith, III  Steve  J. Hughes       6-1-93      1871      660
Mayfield, S. E.
415040600

South Kilgore Unit
417539500
(continued)


                            42-401-056615-00P      Henry McGaughty         Steve  J. Hughes       6-1-93      1871      662
                                                   Meredith







                            42-401-056615-00Q      Will Gordon Meredith    Steve  J. Hughes       6-1-93      1871      664








                            42-401-056615-00R      Charles B. Ogden, III,  Steve  J. Hughes       6-1-93      1871      678
                                                   Individually and as
                                                   Agent for Donald W.
                                                   Driboll, et al





                            42-401-056615-00S      Beverly S. Yocum        Steve  J. Hughes       7-12-93     1871      686
<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056615-00O      A tract of land out of the Daniel
Mayfield, S. E.                                    Clark Survey, Rusk County, Texas,
415040600                                          containing 33.4 acres more or
                                                   less, and more particularly
South Kilgore Unit                                 described in that certain Oil and
417539500                                          Gas Lease dated June 1, 1993,
(continued)                                        recorded in Volume 1871, Page
                                                   660, Official Public Records,
                                                   Rusk County, Texas.


                            42-401-056615-00P      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated June 1, 1993,
                                                   recorded in Volume 1871, Page
                                                   662, Official Public Records,
                                                   Rusk County, Texas.


                            42-401-056615-00Q      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated June 1, 1993,
                                                   recorded in Volume 1871, Page
                                                   664, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056615-00R      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated June 1, 1993,
                                                   recorded in Volume 1871, Page
                                                   678, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056615-00S      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated July 12, 1993,
                                                   recorded in Volume 1871, Page
                                                   686, Official Public Records,
                                                   Rusk County, Texas.

                                                   ONLY INSOFAR AS LEASES COVER
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION.
</TABLE>


                                 Page 91 of 165

<PAGE>   118

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056615-00T      Jerry Powell and        Bargo Energy Company   6-29-93     1871      682
Mayfield, S. E.                                    Fannie Fletcher
415040600

South Kilgore Unit
417539500
(continued)


                            42-401-056615-00U      Symonia Mayfield        Steve  J. Hughes       6-1-93      1871      680
                                                   Palmer







                            42-401-056615-00V      Mrs. Jarrell Garzonzik  Atlantic Richfield     3-1-97      2019      710
                                                                           Company






                            42-401-056615-00W      Liberty Bank and        Atlantic Richfield     9-27-96     1997      12
                                                   Trust Company of        Company
                                                   Tulsa, National
                                                   Association Trustee
                                                   of the M. P. Springer
                                                   B#3338 Trust


                            42-401-056615-00X      Boatmen's Trust         Atlantic Richfield     9-30-96     1997      7
                                                   Company of Arkansas,    Company
                                                   Agent for Mann Heirs

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056615-00T      A tract of land out of the Daniel
Mayfield, S. E.                                    Clark Survey, Rusk County, Texas,
415040600                                          containing 33.4 acres more or
                                                   less, and more particularly
South Kilgore Unit                                 described in that certain Oil and
417539500                                          Gas Lease dated July 29, 1993,
(continued)                                        recorded in Volume 1871, Page
                                                   682, Official Public  Records,
                                                   Rusk County, Texas

                            42-401-056615-00U      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated June 1, 1993,
                                                   recorded in Volume 1871, Page
                                                   680, Official Public Records,
                                                   Rusk County, Texas.

                                                   ONLY INSOFAR AS LEASES COVER
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION.

                            42-401-056615-00V      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated March 1, 1997,
                                                   recorded in Volume 2019, Page
                                                   710, Official Public Records,
                                                   Rusk County, Texas.  (ALL DEPTHS)

                            42-401-056615-00W      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated September 27,
                                                   1996, recorded in Volume 1997,
                                                   Page 12, Official Public Records,
                                                   Rusk County, Texas.  (ALL DEPTHS)

                            42-401-056615-00X      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated September 30,
                                                   1996, recorded in Volume 1997,
                                                   Page 7, Official Public Records,
                                                   Rusk County, Texas.  (ALL DEPTHS)
</TABLE>


                                 Page 92 of 165

<PAGE>   119

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056615-00Y      Barbara Palmer,         Atlantic Richfield     10-29-96    2009      575
Mayfield, S. E.                                    Widow, et al            Company
415040600

South Kilgore Unit
417539500
(continued)


                            42-401-056615-00Z      Carlton Palmer          Atlantic Richfield     11-7-97     2046      10
                                                                           Company







                            42-401-056615-0AA      Carl Bean, Jr.          Atlantic Richfield     10-30-97    2045      181
                                                                           Company







                            42-401-056615-0AB      Betty Springer Reeds    Atlantic Richfield     11-4-97     2046      6
                                                   Revocable Trust         Company







                            42-401-056615-0AC      Melvin Palmer           Atlantic Richfield     11-20-97    2056      466
                                                                           Company

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056615-00Y      A tract of land out of the Daniel
Mayfield, S. E.                                    Clark Survey, Rusk County, Texas,
415040600                                          containing 33.4 acres more or
                                                   less, and more particularly
South Kilgore Unit                                 described in that certain Oil and
417539500                                          Gas Lease dated October 29, 1996,
(90continued)                                      recorded in Volume 2009, Page
                                                   575, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056615-00Z      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 7, 1997,
                                                   recorded in Volume 2046, Page 10,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056615-0AA      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated October 30, 1997,
                                                   recorded in Volume 2045, Page
                                                   181, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056615-0AB      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 4, 1997,
                                                   recorded in Volume 2046, Page 6,
                                                   Official Public Records, Rusk
                                                   County, Texas.

                            42-401-056615-0AC      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 20,
                                                   1997, recorded in Volume 2056,
                                                   Page 466, Official Public
                                                   Records, Rusk County, Texas.

</TABLE>


                                 Page 93 of 165

<PAGE>   120


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056615-0AD      Eva Mayfield Baham      Atlantic Richfield     11-17-97    2056      458
Mayfield, S. E.                                                            Company
415040600

South Kilgore Unit
417539500
(continued)


                            42-401-056615-0AE      Ricky R. Dixon          Atlantic Richfield     11-11-97    2052      849
                                                                           Company







                            42-401-056615-0AF      Darcus Palmer           Atlantic Richfield     11-7-97     2044      787
                                                                           Company
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-401-000863-000      James Owen              Argo Royalty Company   8-16-32     225       85
R. G. Mason (16)            (Mineral Deed)
410763200
1.5625% RI



<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056615-0AD      A tract of land out of the Daniel
Mayfield, S. E.                                    Clark Survey, Rusk County, Texas,
415040600                                          containing 33.4 acres more or
                                                   less, and more particularly
South Kilgore Unit                                 described in that certain Oil and
417539500                                          Gas Lease dated November 17,
(continued)                                        1997, recorded in Volume 2056,
                                                   Page 458, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056615-0AE      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.4 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 11,
                                                   1997, recorded in Volume 2052,
                                                   Page 849, Official Public
                                                   Records, Rusk County, Texas.


                            42-401-056615-0AF      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 11.07 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 7, 1997,
                                                   recorded in Volume 2044, Page
                                                   787, Official Public Records,
                                                   Rusk County, Texas.
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-000863-000      A tract containing 104.4 acres of   Oil, Gas and Mineral Lease dated October 29,
R. G. Mason (16)            (Mineral Deed)         land out of the Juan B. Cadena      1929, recorded in Volume 145, Page 313, Deed
410763200                                          League, Rusk County, Texas, and     Records, Rusk County, Texas.
1.5625% RI                                         more particularly described in
                                                   that certain Mineral Deed dated
                                                   August 16, 1932, recorded in
                                                   Volume 225, Page 85, Deed
                                                   Records, Rusk County, Texas.

</TABLE>


                                 Page 94 of 165

<PAGE>   121



<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056619-00A      C. F. Jones, et al      P. A. Wiley            11-5-34     257       266
Rosa Jones  (s)
415687100
100% WI
87.50% NRI

Rosa Jones (W&B)  (s)
419999500
100% WI                     42-401-056619-00B      Victor A. Smith, et al  R. W. Ingram           11-28-34    257       403
87.5% NRI

South Kilgore Unit  (s)
417539500



                            42-401-056619-00C      Bert L. Laubenheim      P. A. Wiley            9-26-34     255       544







                            42-401-056619-00D      G. E. Fagg              P. A. Wiley            9-26-34     255       542







                            42-401-056619-00E      E. L. Clay              P. A. Wiley            9-26-34     255       539

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056619-00A      A tract of land out of the Daniel   AR-105213
Rosa Jones  (s)                                    Clark Survey, Rusk County, Texas,   Acreage Exchange Agreement dated effective
415687100                                          containing 33.2 acres more or       April 1, 1995 by and between Paloma Partners,
100% WI                                            less, and more particularly         Ltd. and Atlantic Richfield Company.  (s)
87.50% NRI                                         described in that certain Oil and
                                                   Gas Lease dated November 5, 1934,   AR-105265-001
Rosa Jones (W&B)  (s)                              recorded in Volume 257, Page 266,   Crude Oil Buy/Sell Contract dated effective
419999500                                          Deed Records, Rusk County, Texas.   December 1, 1995 by and between ARCO Permian
100% WI                                                                                and Sun Company, Inc. (s)
87.5% NRI                   42-401-056619-00B      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,   AR-105265-000
South Kilgore Unit  (s)                            containing 33.2 acres more or       Purchase and Sale Agreement dated October 6,
417539500                                          less, and more particularly         1995 by and between East Texas Gathering
                                                   described in that certain Oil and   Company, Atlantic Richfield Company, Sun Pipe
                                                   Gas Lease dated November 28,        Line Company and Sun Company, Inc.  (s)
                                                   1934, recorded in Volume 257,
                                                   Page 403, Deed Records, Rusk        AR-105875
                                                   County, Texas.                      South Kilgore Unit and Unit Operating
                                                                                       Agreement dated effective May 1, 1997,
                            42-401-056619-00C      A tract of land out of the Daniel   Atlantic Richfield Company, Operator.  (s)
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.2 acres more or       AR-105583
                                                   less, and more particularly         Longview Gas Plant Gas Purchase Contract
                                                   described in that certain Oil and   dated November 1, 1997 by and between ARCO
                                                   Gas Lease dated September 26,       Permian, Seller, and ARCO Permian, Buyer,
                                                   1934, recorded in Volume 255,       amended August 25, 1998.  (s/d)
                                                   Page 544, Deed Records, Rusk
                                                   County, Texas.                      Private Radio License from Federal
                                                                                       Communications Commission to ARCO
                            42-401-056619-00D      A tract of land out of the Daniel   Communications, Inc., dated December 16,
                                                   Clark Survey, Rusk County, Texas,   1992, File No. 0000000319451, Call Sign
                                                   containing 33.2 acres more or       KNEP883, Frequency 154.47875 MHZ
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated September 26,
                                                   1934, recorded in Volume 255,
                                                   Page 542, Deed Records, Rusk
                                                   County, Texas.

                            42-401-056619-00E      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.2 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated September 26,
                                                   1934, recorded in Volume 255,
                                                   Page 539, Deed Records, Rusk
                                                   County, Texas.

                                                   ONLY INSOFAR AS LEASES COVER
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION.

</TABLE>

                                 Page 95 of 165


<PAGE>   122

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056619-00F      Falcon Company          P. A. Wiley            9-26-34     255       540
Rosa Jones  (s)
415687100

Rosa Jones (W&B)  (s)
419999500

South Kilgore Unit  (s)
417539500                   42-401-056619-00G      C. F. Jones, Guardian   P. A. Wiley            11-26-34    258       511
(continued)                                        of the Estate of Rosa
                                                   Jones, NCM


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056619-00F      A tract of land out of the Daniel
Rosa Jones  (s)                                    Clark Survey, Rusk County, Texas,
415687100                                          containing 33.2 acres more or
                                                   less, and more particularly
Rosa Jones (W&B)  (s)                              described in that certain Oil and
419999500                                          Gas Lease dated September 26,
                                                   1934, recorded in Volume 255,
South Kilgore Unit  (s)                            Page 540, Deed Records, Rusk
417539500                                          County, Texas.
(continued)
                            42-401-056619-00G      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 33.2 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated November 26,
                                                   1934, recorded in Volume 258,
                                                   Page 511, Deed Records, Rusk
                                                   County, Texas.

                                                   ONLY INSOFAR AS LEASES COVER
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION.
</TABLE>

                                Page 96 of 165

<PAGE>   123

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056621-00A      Rufus Jones, Jr., et    Roy H. Laird, et al    9-11-30     151       213
Rufus  Jones "A"  (s)                              ux
415959400
100% WI
68.5625% NRI

Rufus Jones "B"  (s)
416959000
100% WI                     42-401-056621-00B      Opal Gene Givens,       J. H. Merritt          9-11-33     237       556
68.5625% NRI                                       feme sole and T. J.
                                                   Givens
R. Jones/Bond-Jones  (s)
418860800
100% WI
87.5% NRI

R. Jones (Phillips) (s)     42-401-056621-00C      Sun Oil Company         Warner-Quinlan         9-10-34     256       407
411253900                                                                  Company of Texas
100% WI
63.5981% NRI

South Kilgore Unit (s)
417539500
97.659398% WI
83.460188% NRI              42-401-056621-00D      Howard Crenshaw, et ux  R. E. Moore            6-18-34     256       411





                            42-401-056621-00E      W. H. Grier & A. A.     R. E. Moore            6-18-34     256       413
                                                   Biggs, et al


<CAPTION>



FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056621-00A      A tract of land out of the Daniel   AR-105414-001
Rufus  Jones "A"  (s)                              Clark Survey, Rusk County, Texas,   Operating Agreement dated effective June 1,
415959400                                          containing 10.0 acres more or       1980 by and between Gibson Drilling Company,
100% WI                                            less, and more particularly         Operator, and James H. Merritt,
68.5625% NRI                                       described in that certain Oil and   Non-Operator.  (s)
                                                   Gas Lease dated September 11,
Rufus Jones "B"  (s)                               1930, recorded in Volume 151,       Private Radio License from Federal
416959000                                          Page 213, Deed Records, Rusk        Communications Commission to ARCO
100% WI                                            County, Texas.                      Communications, Inc., dated December 16,
68.5625% NRI                                                                           1992, File No. 0000000319451, Call Sign
                            42-401-056621-00B      A tract of land out of the Daniel   KNEP883, Frequency 154.47875 MHZ
R. Jones/Bond-Jones  (s)                           Clark Survey, Rusk County, Texas,
418860800                                          containing 25 acres more or less,   AR-105213
100% WI                                            and more particularly described     Acreage Exchange Agreement dated effective
87.5% NRI                                          in that certain Oil and Gas Lease   April 1, 1995 by and between Paloma Partners,
                                                   dated September 11, 1933,           Ltd. and Atlantic Richfield Company.  (s)
R. Jones (Phillips) (s)                            recorded in Volume 237, Page 556
411253900                                          of Deed Records, Rusk County,       AR-105265-000
100% WI                                            Texas.                              Purchase and Sale Agreement dated October 6,
63.5981% NRI                                                                           1995 by and between East Texas Gathering
                            42-401-056621-00C      A tract of land out of the Daniel   Company, Atlantic Richfield Company, Sun Pipe
South Kilgore Unit (s)                             Clark Survey, Rusk County, Texas,   Line Company and Sun Company, Inc.  (s)
417539500                                          containing 25 acres more or less,
97.659398% WI                                      and more particularly described     AR-105265-001
83.460188% NRI                                     in that certain Oil and Gas Lease   Crude Oil Buy/Sell Contract dated effective
                                                   dated September 10, 1934,           December 1, 1995 by and between ARCO Permian
                                                   recorded in Volume 256, Page 407,   and Sun Company, Inc. (s)
                                                   Deed Records, Rusk County, Texas.
                                                                                       AR-105875
                            42-401-056621-00D      A tract of land out of the Daniel   South Kilgore Unit and Unit Operating
                                                   Clark Survey, Rusk County, Texas,   Agreement dated effective May 1, 1997,
                                                   containing 25 acres more or less,   Atlantic Richfield Company, Operator.  (s)
                                                   and more particularly described     (Except the Rufus Jones "A")
                                                   in that certain Oil and Gas Lease
                                                   dated June 18, 1934, recorded in    AR-105583
                                                   Volume 256, Page 411, Deed          Longview Gas Plant Gas Purchase Contract
                                                   Records, Rusk County, Texas.        dated November 1, 1997 by and between ARCO
                                                                                       Permian, Seller, and ARCO Permian, Buyer.
                            42-401-056621-00E      A tract of land out of the Daniel   (s/d)
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 25 acres more or less,   AR-105584
                                                   and more particularly described     Longview Gas Plant Gas Purchase Contract
                                                   in that certain Oil and Gas Lease   dated November 1, 1997 by and between ARCO
                                                   dated June 18, 1934, recorded in    Permian, Seller, and ARCO Permian, Buyer. (s)
                                                   Volume 256, Page 413, Deed          (Rufus Jones "A")
                                                   Records, Rusk County, Texas.

                                                   ONLY INSOFAR AS LEASES COVER
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION.


</TABLE>


                                 Page 97 of 165

<PAGE>   124


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056621-00F      M. S. Thetford          R. E. Moore            9-1-34      253       481
Rufus  Jones "A"  (s)
415959400

Rufus Jones "B"  (s)
416959000

R. Jones/Bond-Jones  (s)
418860800                   42-401-056621-00G      J. H. Merritt           R. E.  Moore           9-8-34      253       483

R. Jones (Phillips) (s)
411253900

South Kilgore Unit   (s)
417539500
(continued)
                            42-401-056621-00H      May Greve, et vir       R. E. Moore            9-1-34      253       484







                            42-401-056621-00I      T. J. Strahan           R. E. Moore            9-1-34      253       486






                            42-401-056621-00J      Mary Jane Fischer       Atlantic Richfield     5-1-96      2011      853
                                                   Rosenbaum               Company


<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056621-00F      A tract of land out of the Daniel
Rufus  Jones "A"  (s)                              Clark Survey, Rusk County, Texas,
415959400                                          containing 25 acres more or less,
                                                   and more particularly described
Rufus Jones "B"  (s)                               in that certain Oil and Gas Lease
416959000                                          dated September 1, 1934, recorded
                                                   in Volume 253, Page 481, Deed
                                                   Records, Rusk County, Texas.
R. Jones/Bond-Jones  (s)
418860800                    42-401-056621-00G     A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 25 acres more or less,
                                                   and more particularly described
R. Jones (Phillips) (s)                            in that certain Oil and Gas Lease
411253900                                          dated September 8, 1934, recorded
                                                   in Volume 253, Page 483, Deed
South Kilgore Unit   (s)                           Records, Rusk County, Texas.
417539500
(continued)                 42-401-056621-00H      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 25 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated September 1, 1934, recorded
                                                   in Volume 253, Page 484, Deed
                                                   Records, Rusk County, Texas.

                            42-401-056621-00I      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 25 acres more or less,
                                                   and more particularly described
                                                   in that certain Oil and Gas Lease
                                                   dated September 1, 1934, recorded
                                                   in Volume 253, Page 486, Deed
                                                   Records, Rusk County, Texas.

                            42-401-056621-00J      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil,
                                                   Gas and Mineral Lease dated May
                                                   1, 1996, recorded in Volume 2011,
                                                   Page 853, Official Public
                                                   Records, Rusk County, Texas.

                                                   ONLY INSOFAR AS LEASES COVER
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION.


</TABLE>

                                 Page 98 of 165

<PAGE>   125


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056621-00K      Joseph M. Wolfe         Atlantic Richfield     5-1-96      2011      868
Rufus  Jones "A"  (s)                                                      Company
415959400

Rufus Jones "B"  (s)
416959000

R. Jones/Bond-Jones  (s)
418860800
                            42-401-056621-00L      Don Warren              Atlantic Richfield     3-15-97     2003      754
R. Jones (Phillips) (s)                                                    Company
411253900

South Kilgore Unit   (s)
417539500
(continued)


                            42-401-056621-00M      Mary L. Williams        Atlantic Richfield     2-15-97     2009      757
                                                                           Company







                            42-401-056621-00N      Joyce Kennedy, Trustee  Atlantic Richfield     3-15-97     2009      751
                                                                           Company







                            42-401-056621-00O      Bernice Koret           Atlantic Richfield     2-17-97     2011      839
                                                                           Company



<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056621-00K      A tract of land out of the Daniel
Rufus  Jones "A"  (s)                              Clark Survey, A-162, Rusk County,
415959400                                          Texas, containing 1.7 acres more
                                                   or less, and more particularly
Rufus Jones "B"  (s)                               described in that certain Oil,
416959000                                          Gas and Mineral Lease dated May
                                                   1, 1996, recorded in Volume 2011,
R. Jones/Bond-Jones  (s)                           Page 868, Official Public
418860800                                          Records, Rusk County, Texas.


R. Jones (Phillips) (s)     42-401-056621-00L      A tract of land out of the Daniel
411253900                                          Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
South Kilgore Unit   (s)                           or less, and more particularly
417539500                                          described in that certain Oil,
(continued)                                        Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
                                                   2003, Page 754, Official Public
                                                   Records, Rusk County, Texas.


                            42-401-056621-00M      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil,
                                                   Gas and Mineral Lease dated
                                                   February 15, 1997, recorded in
                                                   Volume 2009, Page 757, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056621-00N      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil,
                                                   Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
                                                   2009, Page 751, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056621-00O      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil,
                                                   Gas and Mineral Lease dated
                                                   February 17, 1997, recorded in
                                                   Volume 2011, Page 839, Official
                                                   Public Records, Rusk County,
                                                   Texas.
</TABLE>

                                 Page 99 of 165

<PAGE>   126




<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056621-00P      Foster T. Bean          Atlantic Richfield     3-15-97     2011      828
Rufus  Jones "A"  (s)                                                      Company
415959400

Rufus Jones "B"  (s)
416959000

R. Jones/Bond-Jones  (s)
418860800
                            42-401-056621-00Q      Alfred S. Wolfe         Atlantic Richfield     3-15-97     2011      865
R. Jones (Phillips) (s)                                                    Company
411253900

South Kilgore Unit   (s)
417539500
(continued)


                            42-401-056621-00R      Edwin N. Wolfe          Atlantic Richfield     3-15-97     2011      862
                                                                           Company







                            42-401-056621-00S      Vera Marwil Remer       Atlantic Richfield     3-15-97     2011      850
                                                                           Company







                            42-401-056621-00T      Doris Marwil Frost      Atlantic Richfield     3-15-97     2011      836
                                                                           Company


<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056621-00P      A tract of land out of the Daniel
Rufus  Jones "A"  (s)                              Clark Survey, A-162, Rusk County,
415959400                                          Texas, containing 1.7 acres more
                                                   or less, and more particularly
Rufus Jones "B"  (s)                               described in that certain Oil,
416959000                                          Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
R. Jones/Bond-Jones  (s)                           2011, Page 828, Official Public
418860800                                          Records, Rusk County, Texas.

R. Jones (Phillips) (s)     42-401-056621-00Q      A tract of land out of the Daniel
411253900                                          Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
South Kilgore Unit   (s)                           or less, and more particularly
417539500                                          described in that certain Oil,
(continued)                                        Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
                                                   2011, Page 865, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056621-00R      A tract of land out of the Daniel
                                                   Clark Survey, A-162 Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil,
                                                   Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
                                                   2011, Page 862, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056621-00S      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil,
                                                   Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
                                                   2011, Page 850, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056621-00T      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil,
                                                   Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
                                                   2011, Page 836, Official Public
                                                   Records, Rusk County, Texas.
</TABLE>


                                 Page 100 of 165

<PAGE>   127


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056621-00U      Sean Wrather            Atlantic Richfield     3-15-97     2011      859
Rufus  Jones "A"  (s)                                                      Company
415959400

Rufus Jones "B"  (s)
416959000

R. Jones/Bond-Jones  (s)
418860800
                            42-401-056621-00V      Lamar Elder, Guardian   Atlantic Richfield     3-15-97     2011      833
R. Jones (Phillips) (s)                                                    Company
411253900

South Kilgore Unit   (s)
417539500
(continued)


                            42-401-056621-00W      Iva Lee Sloan           Atlantic Richfield     3-15-97     2011      856
                                                                           Company







                            42-401-056621-00X      Shirley Marwil Sanger   Atlantic Richfield     3-15-97     2020      699
                                                                           Company







                            42-401-056621-00Y      Althea J. Pickett       Atlantic Richfield     10-1-97     2042      486
                                                                           Company

<CAPTION>



FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056621-00U      A tract of land out of the Daniel
Rufus  Jones "A"  (s)                              Clark Survey, A-162, Rusk County,
415959400                                          Texas, containing 1.7 acres more
                                                   or less, and more particularly
Rufus Jones "B"  (s)                               described in that certain Oil,
416959000                                          Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
R. Jones/Bond-Jones  (s)                           2011, Page 859, Official Public
418860800                                          Records, Rusk County, Texas.

R. Jones (Phillips) (s)     42-401-056621-00V      A tract of land out of the Daniel
411253900                                          Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
South Kilgore Unit   (s)                           or less, and more particularly
417539500                                          described in that certain Oil,
(continued)                                        Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
                                                   2011, Page 833, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056621-00W      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil,
                                                   Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
                                                   2011, Page 856, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056621-00X      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil,
                                                   Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
                                                   2020, Page 699, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056621-00Y      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil,
                                                   Gas and Mineral Lease dated
                                                   October 1, 1997, recorded in
                                                   Volume 2042, Page 486, Official
                                                   Public Records, Rusk County,
                                                   Texas.
</TABLE>


                                 Page 101 of 165

<PAGE>   128


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056621-00Z      Bettye Joyce Butts      Atlantic Richfield     3-15-97     2052      786
Rufus  Jones "A"  (s)                              Turner                  Company
415959400

Rufus Jones "B"  (s)
416959000

R. Jones/Bond-Jones  (s)
418860800
                            42-401-056621-0AA      Cozetta Butts Lamore,   Atlantic Richfield     3-15-97     2052      784
R. Jones (Phillips) (s)                            Executrix               Company
411253900

South Kilgore Unit   (s)
417539500
(continued)


                            42-401-056621-0AB      Jenny Marwil Hardy      Atlantic Richfield     9-30-97     2057      847
                                                                           Company






                            42-401-056621-0AC      Earl Stanley Marwil,    Atlantic Richfield     1-30-98     2057      853
                                                   Custodian               Company






                            42-401-056621-0AD      Ann Gibson              Atlantic Richfield     1-30-98     2057      844
                                                                           Company


<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056621-00Z      A tract of land out of the Daniel
Rufus  Jones "A"  (s)                              Clark Survey, A-162, Rusk County,
415959400                                          Texas, containing 1.7 acres more
                                                   or less, and more particularly
Rufus Jones "B"  (s)                               described in that certain Oil,
416959000                                          Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
R. Jones/Bond-Jones  (s)                           2052, Page 786, Official Public
418860800                                          Records, Rusk County, Texas.

R. Jones (Phillips) (s)     42-401-056621-0AA      A tract of land out of the Daniel
411253900                                          Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
South Kilgore Unit   (s)                           or less, and more particularly
417539500                                          described in that certain Oil,
(continued)                                        Gas and Mineral Lease dated March
                                                   15, 1997, recorded in Volume
                                                   2052, Page 784, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056621-0AB      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil,
                                                   Gas and Mineral Lease dated
                                                   September 30, 1997, recorded in
                                                   Volume 2057, Page 847, Official
                                                   Public Records, Rusk County,
                                                   Texas.

                            42-401-056621-0AC      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 30, 1998,
                                                   recorded in Volume 2057, Page
                                                   853, Official Public Records,
                                                   Rusk County, Texas.


                            42-401-056621-0AD      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 30, 1998,
                                                   recorded in Volume 2057, Page
                                                   844, Official Public Records,
                                                   Rusk County, Texas.

</TABLE>


                                 Page 102 of 165

<PAGE>   129


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056621-0AE      L. W. Sugar Limited     Atlantic Richfield     1-30-98     2057      850
Rufus  Jones "A"  (s)                              Partnership             Company
415959400

Rufus Jones "B"  (s)
416959000

R. Jones/Bond-Jones  (s)
418860800
                            42-401-056621-0AF      Douglas Deutser         Atlantic Richfield     1-30-98     2060      102
R. Jones (Phillips) (s)                                                    Company
411253900

South Kilgore Unit   (s)
417539500
(continued)


                            42-401-056621-0AG      Nelson Marwil,          Atlantic Richfield     1-30-98     2060      401
                                                   Custodian               Company







                            42-401-056621-0AH      Angela Jones Burns      Atlantic Richfield     10-1-97     2061      537
                                                                           Company






                            42-401-056621-0AI      Evelyn Yvonne Byrd      Atlantic Richfield     3-21-98     2073      293
                                                                           Company



<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056621-0AE      A tract of land out of the Daniel
Rufus  Jones "A"  (s)                              Clark Survey, A-162, Rusk County,
415959400                                          Texas, containing 1.7 acres more
                                                   or less, and more particularly
Rufus Jones "B"  (s)                               described in that certain Oil and
416959000                                          Gas Lease dated January 30, 1998,
                                                   recorded in Volume 2057, Page
R. Jones/Bond-Jones  (s)                           850, Official Public Records,
418860800                                          Rusk County, Texas.

R. Jones (Phillips) (s)     42-401-056621-0AF      A tract of land out of the Daniel
411253900                                          Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
South Kilgore Unit   (s)                           or less, and more particularly
417539500                                          described in that certain Oil
(continued)                                        and Gas Lease dated January 30,
                                                   1998, recorded in Volume 2060,
                                                   Page 102, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056621-0AG      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 30, 1998,
                                                   recorded in Volume 2060, Page
                                                   401, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056621-0AH      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated October 1, 1997,
                                                   recorded in Volume 2061, Page
                                                   537, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056621-0AI      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated March 21, 1998,
                                                   recorded in Volume 2073, Page
                                                   293, Official Public Records,
                                                   Rusk County, Texas.

</TABLE>

                                 Page 103 of 165

<PAGE>   130


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056621-0AJ      Rosalind J. Robinson,   Atlantic Richfield     3-21-98     2073      296
Rufus  Jones "A"  (s)                              Individually and as     Company
415959400                                          Independent Executrix

Rufus Jones "B"  (s)
416959000

R. Jones/Bond-Jones  (s)
418860800
                            42-401-056621-0AK      Janis P. LaGrone, et    Atlantic Richfield     1-30-98     2077      524
R. Jones (Phillips) (s)                            al                      Company
411253900

South Kilgore Unit   (s)
417539500
(continued)


                            42-401-056621-0AL      Debra Barley            Atlantic Richfield     1-30-98     2084      640
                                                                           Company






                            42-401-056621-0AM      Cozetta B. Lamore       Atlantic Richfield     5-19-98     2084      643
                                                                           Company






                            42-401-056621-0AN      Sean Wrather            Atlantic Richfield     4-6-98      2081      632
                                                                           Company


<CAPTION>



FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056621-0AJ      A tract of land out of the Daniel
Rufus  Jones "A"  (s)                              Clark Survey, A-162, Rusk County,
415959400                                          Texas, containing 1.7 acres more
                                                   or less, and more particularly
Rufus Jones "B"  (s)                               described in that certain Oil and
416959000                                          Gas Lease dated March 21, 1998,
                                                   recorded in Volume 2073, Page
R. Jones/Bond-Jones  (s)                           296, Official Public Records,
418860800                                          Rusk County, Texas.

R. Jones (Phillips) (s)     42-401-056621-0AK      A tract of land out of the Daniel
411253900                                          Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
South Kilgore Unit   (s)                           or less, and more particularly
417539500                                          described in that certain Oil and
(continued)                                        Gas Lease dated January 30, 1998,
                                                   recorded in Volume 2077, Page
                                                   524, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056621-0AL      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 30, 1998,
                                                   recorded in Volume 2084, Page
                                                   640, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056621-0AM      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 1.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil
                                                   and  Gas Lease dated May 19,
                                                   1998, recorded in Volume 2084,
                                                   Page 643, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056621-0AN      A tract of land out of the Daniel
                                                   Clark Survey, Rusk County, Texas,
                                                   containing 1.7 acres more or
                                                   less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated April 6, 1998,
                                                   recorded in Volume 2081, Page
                                                   632, Official Public Records,
                                                   Rusk County, Texas.


</TABLE>

                                 Page 104 of 165

<PAGE>   131

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056621-0AO      Molly Wrather Dolle     Atlantic Richfield     4-6-98      2081      571
Rufus  Jones "A"  (s)                                                      Company
415959400

Rufus Jones "B"  (s)
416959000

R. Jones/Bond-Jones  (s)
418860800
                            42-401-056621-0AP      Beverly Allen           Atlantic Richfield     5-26-98     2081      573
R. Jones (Phillips) (s)                                                    Company
411253900

South Kilgore Unit   (s)
417539500
(continued)


                            42-401-056621-0AQ      Mary Ann Butts Haywood  Atlantic Richfield     5-19-98     2081      591
                                                                           Company







                            42-401-056621-0AR      Oran Bell               Atlantic Richfield     5-19-98     2081      579
                                                                           Company







                            42-401-056621-0AS      Elois V. Montgomery     Atlantic Richfield     5-7-98      2081      604
                                                                           Company


<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056621-0AO      A tract of land out of the Daniel
Rufus  Jones "A"  (s)                              Clark Survey, Rusk County, Texas,
415959400                                          containing 1.7 acres more or
                                                   less, and more particularly
Rufus Jones "B"  (s)                               described in that certain Oil and
416959000                                          Gas Lease dated April 6, 1998,
                                                   recorded in Volume 2081, Page
R. Jones/Bond-Jones  (s)                           571, Official Public Records,
418860800                                          Rusk County, Texas.


R. Jones (Phillips) (s)     42-401-056621-0AP      A tract of land out of the Daniel
411253900                                          Clark Survey, Rusk County, Texas,
                                                   containing 1.7 acres more or
South Kilgore Unit   (s)                           less, and more particularly
417539500                                          described in that certain Oil and
(continued)                                        Gas Lease dated May 26, 1998,
                                                   recorded in Volume 2081, Page
                                                   573, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056621-0AQ      Two tracts of land out of the
                                                   Daniel Clark Survey, Rusk County,
                                                   Texas, containing 3.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 19, 1998,
                                                   recorded in Volume 2081, Page
                                                   591, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056621-0AR      Two tracts of land out of the
                                                   Daniel Clark Survey, Rusk County,
                                                   Texas, containing 3.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 19, 1998,
                                                   recorded in Volume 2081, Page
                                                   579, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-056621-0AS      Two tracts of land out of the
                                                   Daniel Clark Survey, Rusk County,
                                                   Texas, containing 3.7 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 7, 1998,
                                                   recorded in Volume 2081, Page
                                                   604, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>


                                 Page 105 of 165

<PAGE>   132




<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056621-0AT      Deanna J. Sigman        Atlantic Richfield     8-15-98     ----      -----
Rufus  Jones "A"  (s)                                                      Company
415959400

Rufus Jones "B"  (s)
416959000

R. Jones/Bond-Jones  (s)
418860800
                            42-401-056621-0AU      Alpha B. Snell          Atlantic Richfield     6-4-98      2087      240
R. Jones (Phillips) (s)                                                    Company
411253900

South Kilgore Unit   (s)
417539500
(continued)


                            42-401-056621-0AV      Frank Hudson, Receiver  Atlantic Richfield     8-7-98      2087      731
                                                                           Company
- ---------------------------------------------------------------------------------------------------------------------------------
East Texas Field            42-401-000855-000      F. W. Merrick           Argo Royalty Company   10-3-31     205       355
Schuyler                    (Mineral Deed)
(188215 & 615)
410890600
3.1250% RI

East Texas Field            42-401-000856-000
Schuyler"A"                 (Mineral Deed)
(26-768,5101)
41089140
3.1250% RI

East Texas Field            42-401-000857-000
Schuyler "B"                (Mineral Deed)
(26-769, 4970)
410892200
4.6875% RI

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056621-0AT      A tract of land out of the Daniel
Rufus  Jones "A"  (s)                              Clark Survey, A-162, Rusk County,
415959400                                          Texas, containing 1.7 acres more
                                                   or less, and more particularly
Rufus Jones "B"  (s)                               described in that certain
416959000                                          unrecorded Oil and Gas Lease
                                                   dated August 15, 1998
R. Jones/Bond-Jones  (s)
418860800

R. Jones (Phillips) (s)     42-401-056621-0AU      Two tracts of land out of the
411253900                                          Daniel Clark Survey, A-162, Rusk
                                                   County, Texas, containing 3.7
South Kilgore Unit   (s)                           acres more or less, and more
417539500                                          particularly described in that
(continued)                                        certain Oil and Gas Lease dated
                                                   June 4, 1998, recorded in Volume
                                                   2087, Page 240, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-056621-0AV      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated August 7, 1998,
                                                   recorded in Volume 2087, Page
                                                   731, Official Public Records,
                                                   Rusk County, Texas.
- -----------------------------------------------------------------------------------------------------------------------------------
East Texas Field            42-401-000855-000      Two tracts of land out of the J.    Oil, Gas and Mineral Lease dated July 21,
Schuyler                    (Mineral Deed)         B. Cadena Survey, Rusk County,      1930, recorded in Volume 148, Page 411, Deed
(188215 & 615)                                     Texas, consisting of a 92 acre      Records, Rusk County, Texas.
410890600                                          tract of land and a 72 acre tract
3.1250% RI                                         of land in Rusk County, Texas,
                                                   and more particularly described
East Texas Field            42-401-000856-000      in that certain Deed dated
Schuyler"A"                 (Mineral Deed)         October 3, 1931, recorded in
(26-768,5101)                                      Volume 205, Page 355, Deed
41089140                                           Records, Rusk County, Texas.
3.1250% RI

East Texas Field            42-401-000857-000
Schuyler "B"                (Mineral Deed)
(26-769, 4970)
410892200
4.6875% RI

</TABLE>


                                 Page 106 of 165

<PAGE>   133


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056622-000      School District No.     Roy F. Calvert         11-17-31    209       546
Starr-Bailey  (s)                                  29, Trustees of
417897100                                          Leverett Chapel ISD
100% WI
87.50% NRI

South Kilgore Unit (s)
417539500
97.659398% WI
83.460188% NRI

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056622-000      3 acres, more or less, out of the   AR-105213
Starr-Bailey  (s)                                  Daniel Clark Survey A-162, Rusk     Acreage Exchange Agreement dated effective
417897100                                          County, Texas, as more              April 1, 1995 by and between Paloma Partners,
100% WI                                            particularly described in that      Ltd. and Atlantic Richfield Company.  (s)
87.50% NRI                                         certain Oil and Gas Lease dated
                                                   November 17, 1931,  recorded        AR-105265-000
South Kilgore Unit (s)                             Volume 209, Page 546, Deed          Purchase and Sale Agreement dated October 6,
417539500                                          Records, Rusk County, Texas         1995 by and between East Texas Gathering
97.659398% WI                                                                          Company, Atlantic Richfield Company, Sun Pipe
83.460188% NRI                                     ONLY INSOFAR AS LEASE COVERS THE    Line Company and Sun Company, Inc.  (s)
                                                   RIGHTS FROM THE SURFACE TO THE
                                                   BASE OF THE WOODBINE FORMATION.     AR-105265-001
                                                                                       Crude Oil Buy/Sell Contract dated effective
                                                                                       December 1, 1995 by and between ARCO Permian
                                                                                       and Sun Company, Inc. (s)

                                                                                       AR-105583
                                                                                       Longview Gas Plant Gas Purchase Contract
                                                                                       dated November 1, 1997 by and between ARCO
                                                                                       Permian, Seller, and ARCO Permian, Buyer,
                                                                                       amended August 25, 1998.  (s/d)

                                                                                       AR-105875
                                                                                       South Kilgore Unit and Unit Operating
                                                                                       Agreement dated effective May 1, 1997,
                                                                                       Atlantic Richfield Company, Operator.  (s)

                                                                                       Private Radio License from Federal
                                                                                       Communications Commission to ARCO
                                                                                       Communications, Inc., dated December 16,
                                                                                       1992, File No. 0000000319451, Call Sign
                                                                                       KNEP883, Frequency 154.47875 MHZ
</TABLE>

                                 Page 107 of 165

<PAGE>   134

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-00A      Elizabeth Bowman        Atlantic Richfield     12-30-97    2059      341
South Kilgore Unit  (s)                                                    Company
417539500
97.659398% WI
83.460188% NRI

Unit Tract 14


                            42-401-057091-00B      F. T. Bean              Atlantic Richfield     1-5-98      2059      343
                                                                           Company







                            42-401-057091-00C      Barbara Nell Breen      Atlantic Richfield     12-30-97    2059      345
                                                                           Company


<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-00A      A tract of land out of the Daniel   AR-105875
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,   South Kilgore Unit and Unit Operating
417539500                                          Texas, containing 2.00 acres more   Agreement dated effective May 1, 1997,
97.659398% WI                                      or less, and more particularly      Atlantic Richfield Company, Operator.  (s)
83.460188% NRI                                     described in that certain Oil and
                                                   Gas Lease dated December 30,        AR-105583
Unit Tract 14                                      1997, recorded in Volume 2059,      Longview Gas Plant Gas Purchase Contract
                                                   Page 341, Official Public           dated November 1, 1997 by and between ARCO
                                                   Records, Rusk County, Texas.        Permian, Seller, and ARCO Permian, Buyer,
                                                                                       amended August 25, 1998.  (s/d)
                            42-401-057091-00B      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,   Private Radio License from Federal
                                                   Texas, containing 2.00 acres more   Communications Commission to ARCO
                                                   or less, and more particularly      Communications, Inc., dated December 16,
                                                   described in that certain Oil and   1992, File No. 0000000319451, Call Sign
                                                   Gas Lease dated January 5, 1998,    KNEP883, Frequency 154.47875 MHZ
                                                   recorded in Volume 2059, Page
                                                   343, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-00C      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated December 30,
                                                   1997, recorded in Volume 2059,
                                                   Page 345, Official Public
                                                   Records, Rusk County, Texas.
</TABLE>


                                 Page 108 of 165

<PAGE>   135


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-00D      Mary Margaret Carloss   Atlantic Richfield     1-5-98      2059      347
South Kilgore Unit  (s)                                                    Company
417539500
Unit Tract 14
(continued)




                            42-401-057091-00E      Nick Cooney             Atlantic Richfield     1-5-98      2059      349
                                                                           Company







                            42-401-057091-00F      Patricia Ann Harrison   Atlantic Richfield     1-19-98     2059      352
                                                                           Company







                            42-401-057091-00G      Elmer Hays              Atlantic Richfield     12-29-97    2059      354
                                                                           Company







                            42-401-057091-00H      Harvey Hays, Jr.        Atlantic Richfield     1-19-98     2059      356
                                                                           Company

<CAPTION>



FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-00D      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Oil and
                                                   Gas Lease dated January 5, 1998,
                                                   recorded in Volume 2059, Page
                                                   347, Official Public Records,
                                                   Rusk County, Texas.


                            42-401-057091-00E      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 5, 1998,
                                                   recorded in Volume 2059, Page
                                                   349, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-00F      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 19, 1998,
                                                   recorded in Volume 2059, Page
                                                   352, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-00G      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated December 29,
                                                   1997, recorded in Volume 2059,
                                                   Page 354, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-057091-00H      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 19, 1998,
                                                   recorded in Volume 2059, Page
                                                   356, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>

                                 Page 109 of 165

<PAGE>   136


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-00I      Major Kennedy, Jr.      Atlantic Richfield     1-5-98      2059      358
South Kilgore Unit  (s)                                                    Company
417539500
Unit Tract 14
(continued)




                            42-401-057091-00J      Joyce Kennedy, Trustee  Atlantic Richfield     1-5-98      2059      360
                                                                           Company







                            42-401-057091-00K      Velma Lemons            Atlantic Richfield     1-5-98      2059      362
                                                                           Company







                            42-401-057091-00L      Mayde Lowry             Atlantic Richfield     1-14-98     2059      364
                                                                           Company







                            42-401-057091-00M      Teressa Montgomery      Atlantic Richfield     2-11-98     2059      366
                                                                           Company


<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-00I      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Oil and
                                                   Gas Lease dated January 5, 1998,
                                                   recorded in Volume 2059, Page
                                                   358, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-00J      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 5, 1998,
                                                   recorded in Volume 2059, Page
                                                   360, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-00K      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 5, 1998,
                                                   recorded in Volume 2059, Page
                                                   362, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-00L      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 14, 1998,
                                                   recorded in Volume 2059, Page
                                                   364, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-00M      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated February 11,
                                                   1998, recorded in Volume 2059,
                                                   Page 366, Official Public
                                                   Records, Rusk County, Texas.
</TABLE>


                                Page 110 of 165

<PAGE>   137



<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-00N      Morris Farms-A          Atlantic Richfield     12-29-97    2059      369
South Kilgore Unit  (s)                            Co-Partnership          Company
417539500
Unit Tract 14
(continued)




                            42-401-057091-00O      Dorothy Montgomery      Atlantic Richfield     2-11-98     2059      371
                                                                           Company







                            42-401-057091-00P      Norene M. Murray        Atlantic Richfield     12-29-97    2059      373
                                                                           Company







                            42-401-057091-00Q      James Norton            Atlantic Richfield     2-3-98      2059      375
                                                   Scrimshire, Co-Trustee  Company







                            42-401-057091-00R      Donnie M. Wilson        Atlantic Richfield     1-5-98      2059      378
                                                                           Company


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-00N      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Oil and
                                                   Gas Lease dated December 29,
                                                   1997, recorded in Volume 2059,
                                                   Page 369, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-057091-00O      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated February 11,
                                                   1998, recorded in Volume 2059,
                                                   Page 371, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-057091-00P      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated December 29,
                                                   1997, recorded in Volume 2059,
                                                   Page 373, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-057091-00Q      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated February 3, 1998,
                                                   recorded in Volume 2059, Page
                                                   375, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-00R      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 5, 1998,
                                                   recorded in Volume 2059, Page
                                                   378, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>


                                 Page 111 of 165

<PAGE>   138

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-00S      Evelyn Yvonne Byrd      Atlantic Richfield     3-21-98     2073      299
South Kilgore Unit  (s)                                                    Company
417539500
Unit Tract 14
(continued)




                            42-401-057091-00T      Rosalind J. Robinson    Atlantic Richfield     3-21-98     2073      302
                                                                           Company







                            42-401-057091-00U      Ann H. Keetch           Atlantic Richfield     3-12-98     2065      352
                                                                           Company







                            42-401-057091-00V      Iva Lee Sloan           Atlantic Richfield     3-11-98     2065      360
                                                                           Company







                            42-401-057091-00W      John J. Hays            Atlantic Richfield     12-29-97    2065      350
                                                                           Company


<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-00S      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Oil and
                                                   Gas Lease dated March 21, 1998,
                                                   recorded in Volume 2073, Page
                                                   299, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-00T      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated March 21, 1998,
                                                   recorded in Volume 2073, Page
                                                   302, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-00U      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated March 12, 1998,
                                                   recorded in Volume 2065, Page
                                                   352, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-00V      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated March 11, 1998,
                                                   recorded in Volume 2065, Page
                                                   360, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-00W      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated December 29,
                                                   1997, recorded in Volume 2065,
                                                   Page 350, Official Public
                                                   Records, Rusk County, Texas.
</TABLE>


                                 Page 112 of 165

<PAGE>   139

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-00X      D. J. Montgomery        Atlantic Richfield     2-11-98     2065      354
South Kilgore Unit  (s)                                                    Company
417539500
Unit Tract 14
(continued)




                            42-401-057091-00Y      Marilyn M. Nicholson    Atlantic Richfield     12-29-97    2065      358
                                                                           Company







                            42-401-057091-00Z      Emma Sue Vernor         Atlantic Richfield     3-11-98     2065      362
                                                                           Company







                            42-401-057091-0AA      Jo Anne Montgomery      Atlantic Richfield     12-29-97    2065      356
                                                                           Company







                            42-401-057091-0AB      Carolyn Kennedy         Atlantic Richfield     4-9-98      2069      264
                                                   Traylor                 Company

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-00X      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Oil and
                                                   Gas Lease dated February 11,
                                                   1998, recorded in Volume 2065,
                                                   Page 354, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-057091-00Y      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated December 29,
                                                   1997, recorded in Volume 2065,
                                                   Page 358, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-057091-00Z      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated March 11, 1998,
                                                   recorded in Volume 2065, Page
                                                   362, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AA      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated December 29,
                                                   1997, recorded in Volume 2065,
                                                   Page 356, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-057091-0AB      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated April 9, 1998,
                                                   recorded in Volume 2069, Page
                                                   264, Official Public Records,
                                                   Rusk County, Texas.

</TABLE>


                                 Page 113 of 165

<PAGE>   140

<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-0AC      Lois H. Bannister       Atlantic Richfield     3-11-98     2069      254
South Kilgore Unit  (s)                                                    Company
417539500
Unit Tract 14
(continued)




                            42-401-057091-0AD      Bertha M. Bellamy       Atlantic Richfield     3-12-98     2069      252
                                                                           Company







                            42-401-057091-0AE      Carter H. Rhoads        Atlantic Richfield     3-26-98     2069      248
                                                                           Company







                            42-401-057091-0AF      Robert W. Hamilton      Atlantic Richfield     3-12-98     2069      256
                                                                           Company







                            42-401-057091-0AG      Emily H. Langford       Atlantic Richfield     3-11-98     2069      258
                                                                           Company

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-0AC      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Oil and
                                                   Gas Lease dated March 11, 1998,
                                                   recorded in Volume 2069, Page
                                                   254, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AD      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated March 12, 1998,
                                                   recorded in Volume 2069, Page
                                                   252, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AE      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated March 26, 1998,
                                                   recorded in Volume 2069, Page
                                                   248, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AF      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated March 12, 1998,
                                                   recorded in Volume 2069, Page
                                                   256, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AG      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated March 11, 1998,
                                                   recorded in Volume 2069, Page
                                                   258, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>


                                 Page 114 of 165

<PAGE>   141



<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-0AH      Helen Newell            Atlantic Richfield     12-29-97    2069      250
South Kilgore Unit  (s)                                                    Company
417539500
Unit Tract 14
(continued)




                            42-401-057091-0AI      Aurelia Benton          Atlantic Richfield     1-20-98     2069      260
                                                                           Company







                            42-401-057091-0AJ      Thomas B. Bender, Jr.   Atlantic Richfield     1-20-98     2069      262
                                                                           Company







                            42-401-057091-0AK      Ruth Porter             Atlantic Richfield     12-30-97    2082      549
                                                                           Company







                            42-401-057091-0AL      Charles R. Stone as     Atlantic Richfield     4-6-98      2081      562
                                                   Agent and               Company
                                                   Attorney-in-Fact


<CAPTION>



FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-0AH      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Oil and
                                                   Gas Lease dated December 29,
                                                   1997, recorded in Volume 2069,
                                                   Page 250, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-057091-0AI      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 20, 1998,
                                                   recorded in Volume 2069, Page
                                                   260, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AJ      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 20, 1998,
                                                   recorded in Volume 2069, Page
                                                   262, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AK      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated December 30,
                                                   1997, recorded in Volume 2082,
                                                   Page 549, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-057091-0AL      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated April 6, 1998,
                                                   recorded in Volume 2081, Page
                                                   562, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>

                                 Page 115 of 165

<PAGE>   142


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-0AM      Charles R. Stone        Atlantic Richfield     4-6-98      2081      628
South Kilgore Unit  (s)                                                    Company
417539500
Unit Tract 14
(continued)




                            42-401-057091-0AN      Rosie Terrell           Atlantic Richfield     1-20-98     2081      630
                                                                           Company






                            42-401-057091-0AO      Mark Snead              Atlantic Richfield     5-14-98     2081      618
                                                                           Company







                            42-401-057091-0AP      Steven Snead            Atlantic Richfield     5-14-98     2081      626
                                                                           Company






                            42-401-057091-0AQ      Theodore J. Bender      Atlantic Richfield     1-20-98     2081      564
                                                                           Company

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-0AM      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Oil and
                                                   Gas Lease dated April 6, 1998,
                                                   recorded in Volume 2081, Page
                                                   628, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AN      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 20, 1998,
                                                   recorded in Volume 2081, Page
                                                   630, Deed Records, Rusk County,
                                                   Texas.

                            42-401-057091-0AO      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 14, 1998,
                                                   recorded in Volume 2081, Page
                                                   618, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AP      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 14, 1998,
                                                   recorded in Volume 2081, Page
                                                   626, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AQ      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated January 20, 1998,
                                                   recorded in Volume 2081, Page
                                                   564, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>


                                 Page 116 of 165

<PAGE>   143



<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-0AR      Barbara Cooper          Atlantic Richfield     5-7-98      2081      587
South Kilgore Unit  (s)                                                    Company
417539500
Unit Tract 14
(continued)




                            42-401-057091-0AS      James L. Chapman        Atlantic Richfield     6-4-98      2081      581
                                                                           Company







                            42-401-057091-0AT      Dottie Beth Cliburn     Atlantic Richfield     5-20-98     2081      585
                                                                           Company







                            42-401-057091-0AU      Joe Scott Morris        Atlantic Richfield     5-19-98     2081      606
                                                                           Company







                            42-401-057091-0AV      Charles L. Morris,III   Atlantic Richfield     5-19-98     2081      602
                                                   Independent Executor    Company

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-0AR      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Oil and
                                                   Gas Lease dated May 7, 1998,
                                                   recorded in Volume 2081, Page
                                                   587, Official Public Records,
                                                   Rusk County, Texas.


                            42-401-057091-0AS      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated June 4, 1998,
                                                   recorded in Volume 2081, Page
                                                   581, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AT      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 20, 1998,
                                                   recorded in Volume 2081, Page
                                                   585, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AU      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 19, 1998,
                                                   recorded in Volume 2081, Page
                                                   606, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AV      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 19, 1998,
                                                   recorded in Volume 2081, Page
                                                   602, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>


                                 Page 117 of 165

<PAGE>   144




<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-0AW      Betty Sue Jones         Atlantic Richfield     3-11-98     2081      600
South Kilgore Unit  (s)                                                    Company
417539500
Unit Tract 14
(continued)




                            42-401-057091-0AX      Pansy Hays,             Atlantic Richfield     5-14-98     2081      597
                                                   Individually and as     Company
                                                   Independent Executrix






                            42-401-057091-0AY      Ada Richardson          Atlantic Richfield     12-29-97    2081      616
                                                                           Company







                            42-401-057091-0AZ      Pauline Barrett         Atlantic Richfield     12-29-97    2081      577
                                                                           Company







                            42-401-057091-0BA      Althea J. Pickett       Atlantic Richfield     5-19-98     2081      612
                                                                           Company

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-0AW      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Oil and
                                                   Gas Lease dated March 11, 1998,
                                                   recorded in Volume 2081, Page
                                                   600, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AX      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 14, 1998,
                                                   recorded in Volume 2081, Page
                                                   597, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0AY      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated December 29,
                                                   1997, recorded in Volume 2081,
                                                   Page 616, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-057091-0AZ      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated December 29,
                                                   1997, recorded in Volume 2081,
                                                   Page 577, Official Public
                                                   Records, Rusk County, Texas.

                            42-401-057091-0BA      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 19, 1998,
                                                   recorded in Volume 2081, Page
                                                   612, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>

                                 Page 118 of 165

<PAGE>   145



<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-0BB      Nancy Gale              Atlantic Richfield     5-27-98     2081      622
South Kilgore Unit  (s)                            Scrimshire, Agent and   Company
417539500                                          Attorney-in-Fact
Unit Tract 14
(continued)




                            42-401-057091-0BC      Carolyn Newell          Atlantic Richfield     5-25-98     2081      608
                                                                           Company







                            42-401-057091-0BD      Harvey D. Hays          Atlantic Richfield     5-14-98     2081      593
                                                                           Company







                            42-401-057091-0BE      Edgar Capen             Atlantic Richfield     3-11-98     2081      583
                                                                           Company







                            42-401-057091-0BF      Barbara Nelson,         Atlantic Richfield     5-20-98     2081      610
                                                   Independent Executrix   Company

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-0BB      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Oil and
                                                   Gas Lease dated May 27, 1998,
                                                   recorded in Volume 2081, Page
                                                   622, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0BC      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 25, 1998,
                                                   recorded in Volume 2081, Page
                                                   608, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0BD      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 14, 1998,
                                                   recorded in Volume 2081, Page
                                                   593, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0BE      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated March 11, 1998,
                                                   recorded in Volume 2081, Page
                                                   583, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0BF      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Oil and
                                                   Gas Lease dated May 20, 1998,
                                                   recorded in Volume 2081, Page
                                                   610, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>

                                 Page 119 of 165

<PAGE>   146





<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-0BG      Barbara Knight          Atlantic Richfield     1-20-98     2087      238
South Kilgore Unit  (s)                                                    Company
417539500
Unit Tract 14
(continued)




                            42-401-057091-0BH      McCulliss Resources     Atlantic Richfield     8-1-98      2093      361
                                                   Co., Inc.               Company







                            42-401-057091-0BI      Margaret L. Hays, a     Atlantic Richfield     12-30-97    2093      364
                                                   widow and sole          Company
                                                   surviving heir of
                                                   Edison Ford Hayes





                            42-401-057091-0BJ                              Atlantic Richfield     1-5-98      2089      469
                                                   Malcom Kennedy          Company







                            42-401-057091-0BK                              Atlantic Richfield     8-31-98     2089      467
                                                   Beatarice Harrison      Company

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-0BG      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Oil and
                                                   Gas Lease dated January 20, 1998,
                                                   recorded in Volume 2087, Page
                                                   238, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0BH      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Mineral
                                                   Deed dated September 1, 1998,
                                                   recorded in Volume 2092, Page
                                                   423, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0BI      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Mineral
                                                   Deed dated September 1, 1998,
                                                   recorded in Volume 2092, Page
                                                   423, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0BJ      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Mineral
                                                   Deed dated September 1, 1998,
                                                   recorded in Volume 2092, Page
                                                   423, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0BK      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Mineral
                                                   Deed dated September 1, 1998,
                                                   recorded in Volume 2092, Page
                                                   423, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>


                                 Page 120 of 165

<PAGE>   147



<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-0BL      Jack M. Hays            Atlantic Richfield     12-27-97    2097      817
South Kilgore Unit  (s)                                                    Company
417539500
Unit Tract 14
(continued)




                            42-401-057091-0BM      David Bender            Atlantic Richfield     1-20-98     2115      333
                                                                           Company







                            42-401-057091-0BN      Nations Bank, N.A.,     Atlantic Richfield     6-8-98      2100      207
                                                   Trustee of Carolyn      Company
                                                   Lane Trust #1






                            42-401-057091-0BO      Carolyn Spruiell Land   Atlantic Richfield     6-8-98      2109      205
                                                                           Company







                            42-401-057901-0BP      Mary Helen Spruiell     Atlantic Richfield     6-8-98      2109      203
                                                   Boice                   Company

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-0BL      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Mineral
                                                   Deed dated September 1, 1998,
                                                   recorded in Volume 2092, Page
                                                   423, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0BM      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Mineral
                                                   Deed dated September 1, 1998,
                                                   recorded in Volume 2092, Page
                                                   423, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0BN      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Mineral
                                                   Deed dated September 1, 1998,
                                                   recorded in Volume 2092, Page
                                                   423, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057091-0BO      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Mineral
                                                   Deed dated September 1, 1998,
                                                   recorded in Volume 2092, Page
                                                   423, Official Public Records,
                                                   Rusk County, Texas.

                            42-401-057901-0BP      A tract of land out of the Daniel
                                                   Clark Survey, A-162, Rusk County,
                                                   Texas, containing 2.00 acres more
                                                   or less, and more particularly
                                                   described in that certain Mineral
                                                   Deed dated September 1, 1998,
                                                   recorded in Volume 2092, Page
                                                   423, Official Public Records,
                                                   Rusk County, Texas.
</TABLE>


                                 Page 121 of 165

<PAGE>   148




<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-057091-901      Robert B. Burdick       Atlantic Richfield     9-1-98      2092      423
South Kilgore Unit  (s)                                                    Company
417539500
Unit Tract 14
(continued)

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-401-004509-000      J. E. Strickland et     V. C. Perryman         11-20-29    145       607
Strickland "B" (s)                                 ux Emily Strickland,
417880700                                          et al
5.4688%  ORRI

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-401-000852-000      S. R. Cohagan           Argo Royalty Company   9-17-31     202       303
T. O. Mason (466902)        (Mineral Deed)
410761600
1.5625% RI


<CAPTION>



FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-057091-901      A tract of land out of the Daniel
South Kilgore Unit  (s)                            Clark Survey, A-162, Rusk County,
417539500                                          Texas, containing 2.00 acres more
Unit Tract 14                                      or less, and more particularly
(continued)                                        described in that certain Mineral
                                                   Deed dated September 1, 1998,
                                                   recorded in Volume 2092, Page
                                                   423, Official Public Records,
                                                   Rusk County, Texas.
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
East Texas Field            42-401-004509-000      A tract of land out of the M. V.
Strickland "B" (s)                                 Pena League, Rusk County, Texas,
417880700                                          more particularly described in
5.4688%  ORRI                                      Oil & Gas Lease dated November
                                                   20, 1929, recorded in Volume 145,
                                                   Page 607, Deed Records, Rusk
                                                   County, Texas.
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
East Texas Field            42-401-000852-000      147.500 acres of land out of the    Oil, Gas and Mineral Lease dated November 19,
T. O. Mason (466902)        (Mineral Deed)         J. B. Cadena Survey, A-3, Rusk      1929, recorded in Volume 145, Page 339, Deed
410761600                                          County, Texas, and more             Records, Rusk County, Texas
1.5625% RI                                         particularly described in that
                                                   certain Deed dated September 17,
                                                   1931, recorded in Volume 202,
                                                   Page 303, Deed Records, Rusk
                                                   County, Texas.
</TABLE>


                                 Page 122 of 165

<PAGE>   149



<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
East Texas Field            42-401-056613-00A      William Brittain et     L. B. Martin           8-15-34     255       341
Wm. Brittain  (s)                                  ux, et al
412323900
100% WI
76.5626% NRI


                                                                                                              258       358



                            42-401-056613-00B      E. C. Laster, Inc.,     A. B. Edwards          8-15-34
                                                   et al

                                                                                                              257       264







                            42-401-056613-00C      E. C. Laster, Inc.      P. A. Wiley            10-29-34



- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-401-000862-000      Danciger Oil &          Argo Royalty Company   2-16-32     212       322
W. M. Jernigan              (Mineral Deed)         Refining Company of
(26-432;5704)                                      Texas
410684900
3.1250% RI



- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-401-000864-000
A. A. Perkins (RI)
410834500
1.7424% NRI

- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
East Texas Field            42-401-056613-00A      A tract of land out of the J. C.    AR-105213
Wm. Brittain  (s)                                  Barnett Survey, Rusk County,        Acreage Exchange Agreement dated effective
412323900                                          Texas, and more particularly        April 1, 1995 by and between Paloma Partners,
100% WI                                            described in Oil and Gas Lease      Ltd. and Atlantic Richfield Company.  (s)
76.5626% NRI                                       dated August 15, 1934, recorded
                                                   in Volume 255, Page 341, Lease      AR-105265-000
                                                   Records, Rusk County, Texas.        Purchase and Sale Agreement dated October 6,
                                                                                       1995 by and between East Texas Gathering
                            42-401-056613-00B      A tract of land out of the J. C.    Company, Atlantic Richfield Company, Sun Pipe
                                                   Barnett Survey, Rusk County,        Line Company and Sun Company, Inc.  (s)
                                                   Texas, and more particularly
                                                   described in Oil and Gas Lease      AR-105265-001
                                                   dated August 15, 1934, recorded     Crude Oil Buy/Sell Contract dated effective
                                                   in Volume 258, Page 358, Lease      December 1, 1995 by and between ARCO Permian
                                                   Records, Rusk County, Texas.        and Sun Company, Inc. (s)

                            42-401-056613-00C      A tract of land out of the J. C.    AR-105584
                                                   Barnett Survey, Rusk County,        Longview Gas Plant Gas Purchase Contract
                                                   Texas, and more particularly        dated November 1, 1997 by and between ARCO
                                                   described in Oil and Gas Lease      Permian, Seller, and ARCO Permian, Buyer. (s)
                                                   dated October 29, 1934, recorded
                                                   in Volume 257, Page 264, Lease      Private Radio License from Federal
                                                   Records, Rusk County, Texas.        Communications Commission to ARCO
                                                                                       Communications, Inc., dated December 16,
                                                   ONLY INSOFAR AS LEASES COVER        1992, File No. 0000000319451, Call Sign
                                                   RIGHTS FROM THE SURFACE TO THE      KNEP883, Frequency 154.47875 MHZ
                                                   BASE OF THE WOODBINE FORMATION.

- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
East Texas Field            42-401-000862-000      A tract of land out of the John
W. M. Jernigan              (Mineral Deed)         C. Snow Survey, Rusk County,
(26-432;5704)                                      Texas, containing  31 acres more
410684900                                          or less, and more particularly
3.1250% RI                                         described by metes and bounds in
                                                   that certain Mineral Deed dated
                                                   February 16, 1932, recorded in
                                                   Volume 212, Page 322, Deed
                                                   Records, Rusk County, Texas.


- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
East Texas Field            42-401-000864-000      77.06 acres, more or less out of
A. A. Perkins (RI)                                 the J. B. Cadena Survey, Rusk
410834500                                          County, Texas
1.7424% NRI

- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
</TABLE>


                                 Page 123 of 165

<PAGE>   150

<TABLE>
<CAPTION>


                                   EXHIBIT "A"
 ATTACHED TO AND MADE A PART OF THAT CERTAIN PURCHASE AND SALE AGREEMENT DATED EFFECTIVE AS OF
        OCTOBER 1, 1999, BY AND BETWEEN ATLANTIC RICHFIELD COMPANY (ARCO)
                  AND FUTURE ACQUISITION 1995, LTD. (PURCHASER)

 IN ADDITION TO ANY OTHER DEPTH LIMITATIONS EXPRESSED HEREIN, IT IS THE EXPRESS INTENTION TO LIMIT THE DESCRIPTIONS
 OF ARCO'S INTEREST (IF ANY), FROM THE SURFACE DOWN TO THE BASE OF THE DEEPEST PRODUCING FORMATION


SMITH COUNTY

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Shea Prospect               42-423-058204-00A      NationsBank of Texas,   Petro Land Group       9-19-94     3642      693
Arterberry Heirs Oil Unit                          N.A. and M. E.
413000600                                          Florence, Jr.,
31.246875% WI                                      Co-Trustees of the M.
25.61432% NRI                                      E. Florence,Jr. Trust
                                                   and of the Annette F.
                                                   McLemore Trust
                                                   8737-01/02


                            42-423-058205-00A      Dallas Home for the     Caplex Energy, Inc.    3-27-05     3649      758
                                                   Jewish Aged, Inc.







                            42-423-058206-00A      David M. Fender, dihsp  Caplex Energy, Inc.    2-9-95      3642      778
                                                                                                              amended
                                                                                                              3907      120
                                                                                                              and
                                                                                                              ratified
                                                                                                              3907      122




<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Shea Prospect               42-423-058204-00A      37.20 acres, being tracts of 25.0   AR-105657-001
Arterberry Heirs Oil Unit                          acres (Deed 455/210 DR) and 12.20   Letter Agreement dated August 2, 1996,
413000600                                          acres (Deed 315/638 DR), from       between Amoco Production Company and Caplex
31.246875% WI                                      Surface to the stratigraphic        Energy Inc.
25.61432% NRI                                      equivalent of the Base of the
                                                   Rodessa Formation, found at         AR-105657-002
                                                   approximately 7,340 feet in the C   Letter Agreement between Exxon and Caplex
                                                   W Resources, Inc. Arterberry        Energy Inc.
                                                   Heirs No. 1 well, E. Daniels
                                                   A-330 Survey, Smith County, Texas   AR-105657-003
                                                                                       Letter Agreement between Five Star
                            42-423-058205-00A      92.0 acres in Elisha Daniels        Exploration and Caplex Energy, Inc. dated
                                                   Survey A-330, being tracts of       Marcy 9, 1990, amended July 30, 1996.
                                                   67.0 acres (Deed 94/513 DR) and
                                                   25.0 acres (East 25.0 acres of      AR-105657-004
                                                   76.0 acres Deed 291/197 DR), from   Arterberry Heirs Oil Unit Designation
                                                   the Surface to the stratigraphic
                                                   equivalent of the Base of the       AR-105657-000
                                                   Rodessa Formation, found at         Mid-Tex Joint Operating Agreement
                                                   approximately 7,340' in the C W     Shea Prospect Joint Operating Agreement
                                                   Resources Inc. Arterberry Heirs
                                                   No. 1 well, E. Daniels A-330
                                                   Survey, Smith County, Texas

                            42-423-058206-00A      128.841 acres in J. E. Daniels
                                                   Survey A-330, sometimes called
                                                   135.0 acres, being tracts of 76.0
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas

</TABLE>

                                 Page 124 of 165

<PAGE>   151


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Shea Prospect               42-423-058206-00B      Ruby Jean Arterberry    Caplex Energy, Inc.    7-11-96     3823 as   372
Arterberry Heirs Oil Unit                                                                                     ratified
413000600                                                                                                     3837      147
31.246875% WI                                                                                                 3933      308
25.61432% NRI (cont'd)                                                                                        3933      312
                                                                                                              3933      310
                                                                                                              3837      145

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Shea Prospect               42-423-058206-00B      128.841 acres in J. E. Daniels      AR-105657-001
Arterberry Heirs Oil Unit                          Survey A-330, sometimes called      Letter Agreement dated August 2, 1996,
413000600                                          135.0 acres, being tracts of 76.0   between Amoco Production Company and Caplex
31.246875% WI                                      acres (WD 240/349 DR) and 52.841    Energy Inc.
25.61432% NRI (cont'd)                             acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil      AR-105657-002
                                                   Minutes Book $/226, Dist. Court     Letter Agreement between Exxon and Caplex
                                                   Records), from Surface to the       Energy Inc.
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,      AR-105657-003
                                                   found at approximately 7,340' in    Letter Agreement between Five Star
                                                   the C W Resources, Inc. Arterberry  Exploration and Caplex Energy, Inc. dated
                                                   Heirs No. 1 well, E. Daniels        March 9, 1990, amended July 30, 1996.
                                                   A-330 Survey, Smith County, Texas
                                                   (cont'd from above)                 AR-105657-004
                                                                                       Arterberry Heirs Oil Unit Designation

                                                                                       AR-105657-000
                                                                                       Mid-Tex Joint Operating Agreement
                                                                                       Shea Prospect Joint Operating Agreement
</TABLE>

                                 Page 125 of 165

<PAGE>   152



<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Shea Prospect               42-423-058206-00C      Charles Arterberry,     Caplex Energy, Inc.    10-21-96    3889      695
Arterberry Heirs Oil Unit                          et ux Deloris
413000600
31.246875% WI
25.61432% NRI









                            42-423-058206-00D      Bonnie Arterberry,      Caplex Energy, Inc.    1-10-96     3628      787
                                                   dihsp












                            42-423-058206-00E                              Caplex Energy, Inc.    1-20-95     3628      796
                                                   Leon Arterberry,
                                                   Individually and as
                                                   agent and A-I-F for
                                                   Lorenza Arterberry

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Shea Prospect               42-423-058206-00C      128.841 acres in J. E. Daniels      AR-105657-001
Arterberry Heirs Oil Unit                          Survey A-330, sometimes called      Letter Agreement dated August 2, 1996,
413000600                                          135.0 acres, being tracts of 76.0   between Amoco Production Company and Caplex
31.246875% WI                                      acres (WD 240/349 DR) and 52.841    Energy Inc.
25.61432% NRI                                      acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil      AR-105657-002
                                                   Minutes Book $/226, Dist. Court     Letter Agreement between Exxon and Caplex
                                                   Records), from Surface to the       Energy Inc.
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,      AR-105657-003
                                                   found at approximately 7,340' in    Letter Agreement between Five Star
                                                   the C W Resources, Inc.             Exploration and Caplex Energy, Inc. dated
                                                   Arterberry Heirs No. 1 well, E.     Marcy 9, 1990, amended July 30, 1996.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas                       AR-105657-004
                                                                                       Arterberry Heirs Oil Unit Designation
                            42-423-058206-00D      128.841 acres in J. E. Daniels
                                                   Survey A-330, sometimes called      AR-105657-000
                                                   135.0 acres, being tracts of 76.0   Mid-Tex Joint Operating Agreement
                                                   acres (WD 240/349 DR) and 52.841    Shea Prospect Joint Operating Agreement
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas


                            42-423-058206-00E      128.841 acres in J. E. Daniels
                                                   Survey A-330, sometimes called
                                                   135.0 acres, being tracts of 76.0
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas
</TABLE>

                                 Page 126 of 165

<PAGE>   153




<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Shea Prospect               42-423-058206-00F      Gregory Arterberry,     Caplex Energy, Inc.    12-8-04     3692      4
Arterberry Heirs Oil Unit                          dihsp
413000600
31.246875% WI
25.61432% NRI









                            42-423-058206-00G      Kelvin Arterberry,      Caplex Energy, Inc.    1-10-95     3628 as   793
                                                   dihsp                                                      ratified
                                                                                                              3837      130










                            42-423-058206-00H      James G. Hubley, dihsp  Caplex Energy, Inc.    10-4-96     3889      701



<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Shea Prospect               42-423-058206-00F      128.841 acres in J. E. Daniels      AR-105657-001
Arterberry Heirs Oil Unit                          Survey A-330, sometimes called      Letter Agreement dated August 2, 1996,
413000600                                          135.0 acres, being tracts of 76.0   between Amoco Production Company and Caplex
31.246875% WI                                      acres (WD 240/349 DR) and 52.841    Energy Inc.
25.61432% NRI                                      acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil      AR-105657-002
                                                   Minutes Book $/226, Dist. Court     Letter Agreement between Exxon and Caplex
                                                   Records), from Surface to the       Energy Inc.
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,      AR-105657-003
                                                   found at approximately 7,340' in    Letter Agreement between Five Star
                                                   the C W Resources, Inc.             Exploration and Caplex Energy, Inc. dated
                                                   Arterberry Heirs No. 1 well, E.     March 9, 1990, amended July 30, 1996.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas                       AR-105657-004
                                                                                       Arterberry Heirs Oil Unit Designation
                            42-423-058206-00G      128.841 acres in J. E. Daniels
                                                   Survey A-330, sometimes called      AR-105657-000
                                                   135.0 acres, being tracts of 76.0   Mid-Tex Joint Operating Agreement
                                                   acres (WD 240/349 DR) and 52.841    Shea Prospect Joint Operating Agreement
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas

                            42-423-058206-00H      128.841 acres in J. E. Daniels
                                                   Survey A-330, sometimes called
                                                   135.0 acres, being tracts of 76.0
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas

</TABLE>


                                 Page 127 of 165

<PAGE>   154



<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Shea Prospect               42-423-058206-00I      Judi Dunagan, dihsp     Caplex Energy, Inc.    2-10-95     3628      802
Arterberry Heirs Oil Unit
413000600
31.246875% WI
25.61432% NRI









                            42-423-058206-00J      Betty Jane Zak,         Caplex Energy, Inc.    10-4-96     3889      692
                                                   Individually and as
                                                   Independent Executor
                                                   of Est. of Stanley
                                                   Zak, Dec'd.









                            42-423-058206-00K      The Frank and Marilyn   Caplex Energy, Inc.    10-17-96    3889      704
                                                   Budde Family Trust


<CAPTION>



FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Shea Prospect               42-423-058206-00I      128.841 acres in J. E. Daniels      AR-105657-001
Arterberry Heirs Oil Unit                          Survey A-330, sometimes called      Letter Agreement dated August 2, 1996,
413000600                                          135.0 acres, being tracts of 76.0   between Amoco Production Company and Caplex
31.246875% WI                                      acres (WD 240/349 DR) and 52.841    Energy Inc.
25.61432% NRI                                      acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil      AR-105657-002
                                                   Minutes Book $/226, Dist. Court     Letter Agreement between Exxon and Caplex
                                                   Records), from Surface to the       Energy Inc.
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,      AR-105657-003
                                                   found at approximately 7,340' in    Letter Agreement between Five Star
                                                   the C W Resources, Inc.             Exploration and Caplex Energy, Inc. dated
                                                   Arterberry Heirs No. 1 well, E.     March 9, 1990, amended July 30, 1996.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas                       AR-105657-004
                                                                                       Arterberry Heirs Oil Unit Designation
                            42-423-058206-00J      128.841 acres in J. E. Daniels
                                                   Survey A-330, sometimes called      AR-105657-000
                                                   135.0 acres, being tracts of 76.0   Mid-Tex Joint Operating Agreement
                                                   acres (WD 240/349 DR) and 52.841    Shea Prospect Joint Operating Agreement
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas

                            42-423-058206-00K      128.841 acres in J. E. Daniels
                                                   Survey A-330, sometimes called
                                                   135.0 acres, being tracts of 76.0
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas

</TABLE>

                                 Page 128 of 165

<PAGE>   155


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Shea Prospect               42-423-058206-00L      Robert Don              Lee Caple &            9-6-94      3616      588
Arterberry Heirs Oil Unit                          Arterberry, dihsp       Associates
413000600
31.246875% WI
25.61432% NRI










                            42-423-058206-00M      Virginia Arterberry     Caplex Energy, Inc.    9-13-96     3889      707













                            42-423-058206-00N      James D. Culver, et     Caplex Energy, Inc.    7-29-96     3837      124
                                                   ux Donna L.

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Shea Prospect               42-423-058206-00L      128.841 acres in J. E. Daniels      AR-105657-001
Arterberry Heirs Oil Unit                          Survey A-330, sometimes called      Letter Agreement dated August 2, 1996,
413000600                                          135.0 acres, being tracts of 76.0   between Amoco Production Company and Caplex
31.246875% WI                                      acres (WD 240/349 DR) and 52.841    Energy Inc.
25.61432% NRI                                      acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil      AR-105657-002
                                                   Minutes Book $/226, Dist. Court     Letter Agreement between Exxon and Caplex
                                                   Records), from Surface to the       Energy Inc.
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,      AR-105657-003
                                                   found at approximately 7,340' in    Letter Agreement between Five Star
                                                   the C W Resources, Inc.             Exploration and Caplex Energy, Inc. dated
                                                   Arterberry Heirs No. 1 well, E.     March 9, 1990, amended July 30, 1996.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas                       AR-105657-004
                                                                                       Arterberry Heirs Oil Unit Designation

                            42-423-058206-00M      128.841 acres in J. E. Daniels      AR-105657-000
                                                   Survey A-330, sometimes called      Mid-Tex Joint Operating Agreement
                                                   135.0 acres, being tracts of 76.0   Shea Prospect Joint Operating Agreement
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas

                            42-423-058206-00N      128.841 acres in J. E. Daniels
                                                   Survey A-330, sometimes called
                                                   135.0 acres, being tracts of 76.0
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas
</TABLE>

                                 Page 129 of 165

<PAGE>   156


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Shea Prospect               42-423-058206-00O      Marian Hicks            Caplex Energy, Inc.    7-18-96     3889      720
Arterberry Heirs Oil Unit
413000600
31.246875% WI
25.61432% NRI










                            42-423-058206-00P      Sandra Richardson       Wagner & Brown, Ltd.   3-21-97     3963      76














                            42-423-058206-00Q      Carrie Lou Lawson       Wagner & Brown, Ltd.   3-21-97     3947      76


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Shea Prospect               42-423-058206-00O      128.841 acres in J. E. Daniels      AR-105657-001
Arterberry Heirs Oil Unit                          Survey A-330, sometimes called      Letter Agreement dated August 2, 1996,
413000600                                          135.0 acres, being tracts of 76.0   between Amoco Production Company and Caplex
31.246875% WI                                      acres (WD 240/349 DR) and 52.841    Energy Inc.
25.61432% NRI                                      acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil      AR-105657-002
                                                   Minutes Book $/226, Dist. Court     Letter Agreement between Exxon and Caplex
                                                   Records), from Surface to the       Energy Inc.
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,      AR-105657-003
                                                   found at approximately 7,340' in    Letter Agreement between Five Star
                                                   the C W Resources, Inc.             Exploration and Caplex Energy, Inc. dated
                                                   Arterberry Heirs No. 1 well, E.     March 9, 1990, amended July 30, 1996.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas                       AR-105657-004
                                                                                       Arterberry Heirs Oil Unit Designation

                            42-423-058206-00P      128.841 acres in J. E. Daniels      AR-105657-000
                                                   Survey A-330, sometimes called      Mid-Tex Joint Operating Agreement
                                                   135.0 acres, being tracts of 76.0   Shea Prospect Joint Operating Agreement
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas

                            42-423-058206-00Q      128.841 acres in J. E. Daniels
                                                   Survey A-330, sometimes called
                                                   135.0 acres, being tracts of 76.0
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas

</TABLE>


                                 Page 130 of 165

<PAGE>   157


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Shea Prospect               42-423-058206-00R      Robert Arterberry       Wagner & Brown, Ltd.   3-21-97     3947      27
Arterberry Heirs Oil Unit
413000600
31.246875% WI
25.61432% NRI










                            42-423-058206-00S      H. L. Arterberry        Wagner & Brown, Ltd.   3-21-97     3947      19














                            42-423-058206-00T      Emma Jean Arterberry    Wagner & Brown, Ltd.   3-21-97     3947      31


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Shea Prospect               42-423-058206-00R      128.841 acres in J. E. Daniels      AR-105657-001
Arterberry Heirs Oil Unit                          Survey A-330, sometimes called      Letter Agreement dated August 2, 1996,
413000600                                          135.0 acres, being tracts of 76.0   between Amoco Production Company and Caplex
31.246875% WI                                      acres (WD 240/349 DR) and 52.841    Energy Inc.
25.61432% NRI                                      acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil      AR-105657-002
                                                   Minutes Book $/226, Dist. Court     Letter Agreement between Exxon and Caplex
                                                   Records), from Surface to the       Energy Inc.
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,      AR-105657-003
                                                   found at approximately 7,340' in    Letter Agreement between Five Star
                                                   the C W Resources, Inc.             Exploration and Caplex Energy, Inc. dated
                                                   Arterberry Heirs No. 1 well, E.     Marcy 9, 1990, amended July 30, 1996.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas                       AR-105657-004
                                                                                       Arterberry Heirs Oil Unit Designation

                            42-423-058206-00S      128.841 acres in J. E. Daniels      AR-105657-000
                                                   Survey A-330, sometimes called      Mid-Tex Joint Operating Agreement
                                                   135.0 acres, being tracts of 76.0   Shea Prospect Joint Operating Agreement
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas

                            42-423-058206-00T      128.841 acres in J. E. Daniels
                                                   Survey A-330, sometimes called
                                                   135.0 acres, being tracts of 76.0
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas
</TABLE>

                                 Page 131 of 165

<PAGE>   158


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Arterberry Heirs Oil Unit   42-423-058206-00U      Johnnie Mae Tucker      Wagner & Brown, Ltd.   3-21-97     3947      23
413000600
31.246875% WI
25.61432% NRI











                            42-423-058206-00V      Renee Elliott           Wagner & Brown, Ltd.   3-21-97     3963      74
                                                   Frenchell Paul
                                                   Jeffrey Pierce












                            42-423-058206-00W      Vonzella Aarterberry    Wagner & Brown, Ltd.   3-21-97     3947      21


<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Arterberry Heirs Oil Unit   42-423-058206-00U      128.841 acres in J. E. Daniels      AR-105657-001
413000600                                          Survey A-330, sometimes called      Letter Agreement dated August 2, 1996,
31.246875% WI                                      135.0 acres, being tracts of 76.0   between Amoco Production Company and Caplex
25.61432% NRI                                      acres (WD 240/349 DR) and 52.841    Energy Inc.
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil      AR-105657-002
                                                   Minutes Book $/226, Dist. Court     Letter Agreement between Exxon and Caplex
                                                   Records), from Surface to the       Energy Inc.
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,      AR-105657-003
                                                   found at approximately 7,340' in    Letter Agreement between Five Star
                                                   the C W Resources, Inc.             Exploration and Caplex Energy, Inc. dated
                                                   Arterberry Heirs No. 1 well, E.     Marcy 9, 1990, amended July 30, 1996.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas                       AR-105657-004
                                                                                       Arterberry Heirs Oil Unit Designation

                            42-423-058206-00V      128.841 acres in J. E. Daniels      AR-105657-000
                                                   Survey A-330, sometimes called      Mid-Tex Joint Operating Agreement
                                                   135.0 acres, being tracts of 76.0   Shea Prospect Joint Operating Agreement
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas

                            42-423-058206-00W      128.841 acres in J. E. Daniels
                                                   Survey A-330, sometimes called
                                                   135.0 acres, being tracts of 76.0
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas
</TABLE>

                                 Page 132 of 165

<PAGE>   159


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Arterberry Heirs Oil Unit   42-423-058206-00X      Jewel Timmons           Wagner & Brown, Ltd.   3-21-97     3947      39
413000600
31.246875% WI
25.61432% NRI











                            42-423-058206-00Y      Geneva Mays             Wagner & Brown, Ltd.   3-21-97     3963      66














                            42-423-058207-00A      Thomas Harold           Caplex Energy, Inc.    8-8-96      3846 as   547
                                                   Grantham,                                                  ratified
                                                   Individually and as                                        3889      725
                                                   Independent Executor                                       3889      727
                                                   of the Estate of                                           3889      729
                                                   Sarah Helen Smith,                                         3931      512
                                                   Dec'd.

<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Arterberry Heirs Oil Unit   42-423-058206-00X      128.841 acres in J. E. Daniels      AR-105657-001
413000600                                          Survey A-330, sometimes called      Letter Agreement dated August 2, 1996,
31.246875% WI                                      135.0 acres, being tracts of 76.0   between Amoco Production Company and Caplex
25.61432% NRI                                      acres (WD 240/349 DR) and 52.841    Energy Inc.
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil      AR-105657-002
                                                   Minutes Book $/226, Dist. Court     Letter Agreement between Exxon and Caplex
                                                   Records), from Surface to the       Energy Inc.
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,      AR-105657-003
                                                   found at approximately 7,340' in    Letter Agreement between Five Star
                                                   the C W Resources, Inc.             Exploration and Caplex Energy, Inc. dated
                                                   Arterberry Heirs No. 1 well, E.     Marcy 9, 1990, amended July 30, 1996.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas                       AR-105657-004
                                                                                       Arterberry Heirs Oil Unit Designation

                            42-423-058206-00Y      128.841 acres in J. E. Daniels      AR-105657-000
                                                   Survey A-330, sometimes called      Mid-Tex Joint Operating Agreement
                                                   135.0 acres, being tracts of 76.0   Shea Prospect Joint Operating Agreement
                                                   acres (WD 240/349 DR) and 52.841
                                                   acres (sometimes called 49.80
                                                   acres Block 2, 3, 4 suit Civil
                                                   Minutes Book $/226, Dist. Court
                                                   Records), from Surface to the
                                                   stratigraphic equivalent of the
                                                   base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas

                            42-423-058207-00A      271.441 acres, being tracts of
                                                   76.0 acres (WD 240/349 DR) and
                                                   52.841 acres (Sometimes called
                                                   49.80 acres Block 2, 3, 4 suit
                                                   Civil Minutes Book R/226, Dist.
                                                   Court Records), 69.90 acres (Deed
                                                   47/531 DR), and 60.9 acres (Deed
                                                   Y/426 DR) in J. E. Daniels A-330
                                                   Survey, and 12.7 acres out of the
                                                   D. Shaw Survey A-917 (WD 57/93
                                                   DR) from Surface to the
                                                   stratigraphic equivalent of the
                                                   Base of the Rodessa Formation,
                                                   found at approximately 7,340' in
                                                   the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.
                                                   Daniels A-330 Survey, Smith
                                                   County, Texas

</TABLE>


                                 Page 133 of 165
<PAGE>   160



<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Arterberry Heirs Oil Unit   42-423-058208-00A      J. S. Hudnall           Frank J. Budde         6-17-66     1202      349
413000600                                          G.W. Pirtle             (Exxon)
31.246875% WI                                      (Exxon Corporation
25.61432% NRI                                      F/O & AOGL)





                            42-423-058209-00A      Sam Arterberry, a       M. E. Zoller (Exxon)   11-6-73     1471      567
                                                   single man dihsp
                                                   (Exxon Corporation FO
                                                   & AOGL)






                            42-423-058210-00A      Annette F. Broyles      M. E. Zoller (Exxon)   2-/12-74    1493      887
                                                   D. I. Felsenthal
                                                   Sharon F. Goren

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Arterberry Heirs Oil Unit   42-423-058208-00A      4.15 acre Tract 2 of 40.0 acre      AR-105657-001
413000600                                          Arterberry Oil Unit (4.15 acres     Letter Agreement dated August 2, 1996,
31.246875% WI                                      out of 25.50 acre tract described   between Amoco Production Company and Caplex
25.61432% NRI                                      in MD 322/435 DR), from Surface     Energy Inc.
                                                   to 7,340' in the C W Resources,
                                                   Inc. Arterberry Heir No. 1 well,    AR-105657-002
                                                   E. Daniels A-330 Survey, Smith      Letter Agreement between Exxon and Caplex
                                                   County, Texas                       Energy Inc.

                                                                                       AR-105657-003
                            42-423-058209-00A      40.0 acre Arterberry Oil Unit       Letter Agreement between Five Star
                                                   Tracts 1 (25.0), 2 (4.15), 3        Exploration and Caplex Energy, Inc. dated
                                                   (4.50) and 4 (6.35), from Surface   Marcy 9, 1990, amended July 30, 1996.
                                                   to the stratigraphic equivalent
                                                   of the Base of the Rodessa          AR-105657-004
                                                   Formation, found at approximately   Arterberry Heirs Oil Unit Designation
                                                   7,340' in the C W Resources, Inc.
                                                   Arterberry Heirs No. 1 well, E.     AR-105657-000
                                                   Daniels A-330 Survey, Smith         Mid-Tex Joint Operating Agreement
                                                   County, Texas                       Shea Prospect Joint Operating Agreement


                            42-423-058210-00A      4.15 acre Tract 2 of 40.0 acre
                                                   Arterberry Oil Unit (4.15 acres
                                                   out of 25.50 acre tract described
                                                   in MD 322/435 DR), from Surface
                                                   to 7,340' in the C W Resources,
                                                   Inc. Arterberry Heir No. 1 well,
                                                   E. Daniels A-330 Survey, Smith
                                                   County, Texas

</TABLE>


                                 Page 134 of 165

<PAGE>   161


<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Shea Prospect               42-423-057809-00A      Ronnie Webb             Thompson Interests,    7-11-97
33.33% WI                                                                  Inc.




                            42-423-057809-00B      Elaine Keeny                                   7-11-97
                                                                           Thompson Interests,
                                                                           Inc.



                            42-423-057809-00C      Kenneth Webb                                   7-11-97

                                                                           Thompson Interests,
                                                                           Inc.


                            42-423-057809-00D      Edith C. Webb                                  7-11-97


                                                                           Thompson Interests,
                                                                           Inc.
                            42-423-057810-00A      J. L. Tweedy                                   7-20-97



                                                                           Thompson Interests,
                                                                           Inc.


- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
Shea Prospect               42-423-057810-00B      Martha Helen Sinclair   Thompson Interests,    7-20-97
33.33% WI                                                                  Inc.

                            42-423-057810-00C      Jewel M. Simpson                               7-20-97
                                                                           Wagner & Brown, Ltd.

                            42-423-057810-00D      John V. Sinclair                               7-20-97     3995      289
                                                                           Wagner & Brown, Ltd.

                            42-423-057810-00E      James T. Sinclair                              7-20-97     3995      289
                                                                           Wagner & Brown, Ltd.

                            42-423-057810-00F      Margaret C. Hamlin                             7-25-97     3995      282
                                                                           Wagner & Brown, Ltd.

                            42-423-057810-00G      Roy Carpenter                                  7-25-97     3995      291
                                                                           Wagner & Brown, Ltd.
<CAPTION>


FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Shea Prospect               42-423-057809-00A      71.52 acres, being tracts of        AR-105657-000
33.33% WI                                          25.0, 16.52, 25.50 and 4.50 acres   Mid-Tex Joint Operating Agreement
                                                   out of E. Caniels A-330 (Deed       Shea Prospect Joint Operating Agreement
                                                   363/66 DR) Smith County, Texas

                            42-423-057809-00B      71.52 acres, being tracts of
                                                   25.0, 16.52, 25.50 and 4.50 acres
                                                   out of E. Caniels A-330 (Deed
                                                   363/66 DR) Smith County, Texas

                            42-423-057809-00C      71.52 acres, being tracts of
                                                   25.0, 16.52, 25.50 and 4.50 acres
                                                   out of E. Caniels A-330 (Deed
                                                   363/66 DR) Smith County, Texas

                            42-423-057809-00D      71.52 acres, being tracts of
                                                   25.0, 16.52, 25.50 and 4.50 acres
                                                   out of E. Caniels A-330 (Deed
                                                   363/66 DR) Smith County, Texas

                            42-423-057810-00A      27.441 acres out of E. Daniels
                                                   A-330 (MD 273/120 DR), Smith
                                                   County, Texas
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
Shea Prospect               42-423-057810-00B      27.441 acres out of E. Daniels      AR-105657-00A
33.33% WI                                          A-330 (MD 273/120 DR), Smith        Shea Prospect Joint Operating Agreement
                                                   County, Texas

                            42-423-057810-00C      27.441 acres out of E. Daniels
                                                   A-330 (MD 273/120 DR), Smith
                                                   County, Texas

                            42-423-057810-00D      27.441 acres out of E. Daniels
                                                   A-330 (MD 273/120 DR), Smith
                                                   County, Texas

                            42-423-057810-00E      27.441 acres out of E. Daniels
                                                   A-330 (MD 273/120 DR), Smith
                                                   County, Texas

                            42-423-057810-00F      27.441 acres out of E. Daniels
                                                   A-330 (MD 273/120 DR), Smith
                                                   County, Texas

                            42-423-057810-00G      27.441 acres out of E. Daniels
                                                   A-330 (MD 273/120 DR), Smith
                                                   County, Texas
</TABLE>


                                 Page 135 of 165

<PAGE>   162



<TABLE>
<CAPTION>

FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST                ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                    <C>                     <C>                    <C>         <C>       <C>
Shea Prospect               42-423-057810-00H      Ann Sinclair Walker     Wagner & Brown, Ltd.   7-20-97     3987      359
33.33% WI

                            42-423-057810-00I      E. Faye Sinclair        Wagner & Brown, Ltd.   7-20-97     4027      104


                            42-423-057810-00J      Dr. Rayford Scott       Wagner & Brown, Ltd.   7-20-97     4225      253
                                                   Jones

                            42-423-057811-00A                              Wagner & Brown, Ltd.   4-4-97      3987      376
                                                   Victorine W. Watson

                            42-423-057812-00A                              Wagner & Brown, Ltd.   6-4-97      4052      87
                                                   NationsBank of Texas,
                                                   N.A., Trustee u/w
                            42-423-057813-00A      Milton E. Daniel Trust  Wagner & Brown, Ltd.   4-4-97      3947      15
                                                   John H. Brogan, Jr.

<CAPTION>



FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST              ARCO LEASE NO.         DESCRIPTION OF LANDS                 SUBJECT TO:
- --------------------------- ---------------------- ----------------------------------- --------------------------------------------
<S>                         <C>                    <C>                                 <C>
Shea Prospect               42-423-057810-00H      27.441 acres out of E. Daniels      AR-105657-00A
33.33% WI                                          A-330 (MD 273/120 DR), Smith        Shea Prospect Joint Operating Agreement
                                                   County, Texas

                            42-423-057810-00I      27.441 acres out of E. Daniels
                                                   A-330 (MD 273/120 DR), Smith
                                                   County, Texas

                            42-423-057810-00J      27.441 acres out of E. Daniels
                                                   A-330 (MD 273/120 DR), Smith
                                                   County, Texas

                            42-423-057811-00A      30.38 acres in D. Shaw A-917
                                                   Survey, (Deed 1129/188 DR) Smith
                                                   County, Texas

                            42-423-057812-00A      49.79 acres in D. Shaw A-917
                                                   Survey (OGL 2288/479 DR) Smith
                                                   County, Texas

                            42-423-057813-00A      102.60 acres, being tracts of
                                                   69.90 (Deed 47/531 DR) and 20.0
                                                   acres (60.0 acre tract Deed &/426
                                                   LESS North 40.0 acres as
                                                   designated for unit for Roberson
                                                   No. 1 well) E. Daniel A-330
                                                   Survey and 12.70 acres (WD 57/93
                                                   DR) D. Shaw A-917 Survey, Smith
                                                   County, Texas



</TABLE>

                                 Page 136 of 165


<PAGE>   163
                                   EXHIBIT "A"
            ATTACHED TO AND MADE A PART OF THAT CERTAIN PURCHASE AND
                      SALE AGREEMENT DATED EFFECTIVE AS OF
        OCTOBER 1, 1998, BY AND BETWEEN ATLANTIC RICHFIELD COMPANY (ARCO)
                  AND FUTURE ACQUISITION 1995, LTD. (PURCHASER)

          IN ADDITION TO ANY OTHER DEPTH LIMITATIONS EXPRESSED HEREIN,
              IT IS THE EXPRESS INTENTION TO LIMIT THE DESCRIPTIONS
               OF ARCO'S INTEREST (IF ANY), FROM THE SURFACE DOWN
                 TO THE BASE OF THE DEEPEST PRODUCING FORMATION

UPSHUR COUNTY
<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                     DEED
PROPERTY CODE                                                                                     LEASE
ARCO'S INTEREST             ARCO LEASE NO.         LESSOR/GRANTOR          LESSEE/GRANTEE         DATE        BOOK      PAGE
- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
<S>                         <C>                   <C>                      <C>                    <C>         <C>       <C>
East Texas Field            42-459-000880-000      V. R. Wyatt             Argo Royalty Company   4-29-31     83        610
E. A. Watts (8985)          (Mineral Deed)
410968600
1.5625% RI





- --------------------------- ---------------------- ----------------------- ---------------------- ----------- --------- ---------
East Texas Field            42-459-000881-000      B. J. Claypool          Argo Royalty Company   5-1-31      83        604
Webb #1                     (Mineral Deed)
413546600
25% RI BPO
6.25% NRI BPO
40% RI APO
10% NRI APO


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
East Texas Field            42-459-000880-000   180 acres out of the C. H. Cooper
E. A. Watts (8985)          (Mineral Deed)      Survey, A-81, Upshur County,
410968600                                       Texas, being more particularly
1.5625% RI                                      described in that certain Mineral
                                                Deed dated April 29, 1931 and
                                                recorded in Volume 83, Page 610,
                                                Deed Records, Upshur County,
                                                Texas.

- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
East Texas Field            42-459-000881-000   70 acres of land on G. W. Hooper    AR-104929
Webb #1                     (Mineral Deed)      H. R. Survey, being a part of       Oil and Gas Lease dated July 19, 1994 between
413546600                                       Block 2, and more particularly      Atlantic Richfield Company, Lessor, and Chinn
25% RI BPO                                      described by metes and bounds in    Exploration Company, Lessee, recorded in
6.25% NRI BPO                                   Mineral Deed dated May 1, 1931,     Volume 173, Page 158, Deed Records, Upshur
40% RI APO                                      recorded in Volume 83, Page 604,    County, Texas.
10% NRI APO                                     Deed Records, Upshur County,
                                                Texas.

</TABLE>


                                 Page 137 of 165

<PAGE>   164


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                             DEED
PROPERTY CODE                                                                                             LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR                    LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------------  ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                               <C>                     <C>         <C>     <C>
Glenwood Field              42-183-057630-00A   Lottie F. Calhoun Family          Amoco Production Co.    11/2/95     2895    234
(Cotton Valley Sand)                            Trust
E. F. Johnson Gas Unit (d)
411001300                   42-183-057630-00B   Virginia Rives Johnson            Amoco Production Co.    10/12/95    2886    441
33.33% WI
                            42-183-057630-00C   Jacquelyn H. Denney               Amoco Production Co.    11/2/95     2895    232

                            42-183-057632-00A   B. J. Barclay et ux et al         Amoco Production Co.    11/2/95     2895    225

                            42-183-057632-00B   James Ray Northcutt               Amoco Production Co.    11/2/95     2895    228

                            42-183-057632-00C   Myra Lynn Ray Roberts             Amoco Production Co.    11/2/95     2982    263

                            42-183-057632-00D   Leonard Frank Ray et al           Amoco Production Co.    11/2/95     2982    266

                            42-183-057698-00A   Mary S. Florence et al            Amoco Production Co.    9/27/95     2936    278

                            42-183-057698-00B   Tommie Faye Starr                 Amoco Production Co.    9/19/95     2886    415

                            42-183-057698-00C   Eleanor Bankhead Florence, et al  Amoco Production Co.    9/27/95     2886    435

                            42-183-057698-00D   Virginia Gibson Starr             Amoco Production Co.    9/19/95     2886    433

                            42-183-057698-00E   Edith B. Lester                   Amoco Production Co.    9/19/95     2886    411

                            42-183-057699-00A   Ron Dunbar et al                  Crown Resources Co.     3/18/96     2964    81

                            42-183-057699-00B   G. R. Dunbar                      Crown Resources Co.     3/18/96     2957    555

                            42-183-057700-00A   Leneve D. Bell                    Amoco Production Co.    9/19/95     2886    457

                            42-183-057700-00B   Bessie Dunbar Dickson             Amoco Production Co.    9/19/95     2886    459

                            42-183-057700-00C   Kathleen D. Mincey                Amoco Production Co.    9/19/95     2886    429

                            42-183-057700-00D   Deanne Buchanan                   Amoco Production Co.    9/19/95     2895    254

                            42-183-057700-00E   Judy Banks                        Amoco Production Co.    9/19/95     2895    245

                            42-183-057748-00A   Mary Lou Weiss                    Amoco Production Co.    10/12/95    2895    219

                            42-183-057748-00B   Robert G. Barry et al             Amoco Production Co.    10/12/95    2886    453

                            42-183-057748-00C   Jacqueline T. Garrett             Amoco Production Co.    10/12/95    2886    447


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-183-057630-00A   A tract or tracts of land located   AR-105496
(Cotton Valley Sand)                            in Upshur County and Gregg          Farmin Agreement dated December 12, 1996
E. F. Johnson Gas Unit (d)                      County, Texas, as more fully        Between Amoco Production Company, Farmor,
411001300                   42-183-057630-00B   described in that certain           And C W Resources, Inc., et al, Farmee
33.33% WI                                       Assignment dated effective May
                            42-183-057630-00C   29, 1997, from Amoco Production     AR-105498
                                                Company to Atlantic Richfield       Joint Operating Agreement dated December 12,
                            42-183-057632-00A   Company, et al, recorded at         1996 between C W Resources, Inc., Operator,
                                                Volume 296, Page 216, Official      And Atlantic Richfield Company, et al,
                            42-183-057632-00B   Records of Upshur County, Texas.    non-operators

                            42-183-057632-00C   LIMITED IN DEPTH FROM THE SURFACE   AR-105498-005
                                                DOWN TO 100' BELOW  THE TOTAL       Designation of Gas Unit dated effective June
                            42-183-057632-00D   DEPTH OF THE C W RESOURCES E. F.    11, 1997, by and between C W Resources, Inc.
                                                JOHNSON WELL.                       and Atlantic Richfield Company, et al
                            42-183-057698-00A

                            42-183-057698-00B

                            42-183-057698-00C

                            42-183-057698-00D

                            42-183-057698-00E

                            42-183-057699-00A

                            42-183-057699-00B

                            42-183-057700-00A

                            42-183-057700-00B

                            42-183-057700-00C

                            42-183-057700-00D

                            42-183-057700-00E

                            42-183-057748-00A

                            42-183-057748-00B

                            42-183-057748-00C
</TABLE>



                                 Page 138 of 165
<PAGE>   165


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                       DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR              LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------  ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                         <C>                     <C>         <C>     <C>
Glenwood Field              42-183-057748-00D   Mary Elizabeth Edwards      Amoco Production Co.    10/12/95    2886      439
(Cotton Valley Sand)
E. F. Johnson Gas Unit (d)  42-183-057748-00E   Mary Katherine Block        Amoco Production Co.    10/12/95    2886      421
411001300
(continued)                 42-183-057748-00F   Ben Johnson III, Ttee       Amoco Production Co.    10/12/95    2886      444

                            42-183-057748-00G   Hughleen Dunbar Fenton      Crown Resources Co.     3/15/96     2957      562

                            42-183-057748-00H   G. R. Dunbar                Crown Resources Co.     3/15/96     2957      551

                            42-183-057748-00I   J. R. Dunbar et ux          Crown Resources Co.     3/15/96     2964      89

                            42-183-057748-00J   David Terry III             Crown Resources Co.     5/1/97      File #    9710955


                            42-183-057748-00K   Sara J. Struges Brian       Crown Resources Co.     5/1/97      File #    9710956

                            42-183-057748-00L   Paul L. Whaley, Jr.         Crown Resources Co.     5/6/97      File #    9710959

                            42-183-057748-00M   Thomas L. Whaley            Crown Resources Co.     5/10/97     File #    9710965

                            42-183-057748-00N   Cummings Royalty            Crown Resources Co.     5/8/97      File #    9710966
                                                Acquisition Co., Inc.

                            42-183-057748-00O   Royalty Exchange, Inc.      Crown Resources Co.     5/8/97      File #    9710653

                            42-183-057748-00P   Mack Camp                   Crown Resources Co.     5/1/97      File #    9710952

                            42-183-057748-00Q   Jo Margaret Pitman          Crown Resources Co.     4/30/97     File #    9710958

                            42-183-057748-00R   Sarah L. Boone              Crown Resources Co.     5/1/97      File #    9712770

                            42-183-057748-00S   Katherine E. Thompson       Crown Resources Co.     5/1/97      File #    9710951

                            42-183-057748-00T   Legacy Royalty, Ltd.        Crown Resources Co.     4/25/97     File #    9712773

                            42-183-057748-00U   William G. McCullough       Crown Resources Co.     5-6-97      File #    9712766

                            42-183-057748-00V   Gus and Katherine L.        Crown Resources Co.     5-2-97      File #    9710651
                                                Carter Trust

                            42-183-057748-00W   Eva Jean Blount             Crown Resources Co.     4-24-97     File #    9710652

                            42-183-057748-00X   Elaine Markham Clanton      Crown Resources Co.     4-24-97     File #    9710963

                            42-183-057748-00Y   Linda S. Gray McMahon       Crown Resources Co.     5-6-97      File #    9710762


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-183-057748-00D   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County and Gregg
E. F. Johnson Gas Unit (d)  42-183-057748-00E   County, Texas, as more fully
411001300                                       described in that certain
(continued)                 42-183-057748-00F   Assignment dated effective May
                                                29, 1997, from Amoco Production
                            42-183-057748-00G   Company to Atlantic Richfield
                                                Company, et al, recorded at
                            42-183-057748-00H   Volume 296, Page 216, Official
                                                Records of Upshur County, Texas.
                            42-183-057748-00I
                                                LIMITED IN DEPTH FROM THE SURFACE
                            42-183-057748-00J   DOWN TO 100' BELOW  THE TOTAL
                                                DEPTH OF THE C W RESOURCES E. F.
                                                JOHNSON WELL.
                            42-183-057748-00K

                            42-183-057748-00L

                            42-183-057748-00M

                            42-183-057748-00N


                            42-183-057748-00O

                            42-183-057748-00P

                            42-183-057748-00Q

                            42-183-057748-00R

                            42-183-057748-00S

                            42-183-057748-00T

                            42-183-057748-00U

                            42-183-057748-00V


                            42-183-057748-00W

                            42-183-057748-00X

                            42-183-057748-00Y


</TABLE>


                                 Page 139 of 165
<PAGE>   166


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                       DEED
PROPERTY CODE                                                                                       LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR              LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------  ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                         <C>                     <C>         <C>     <C>
Glenwood Field              42-183-057748-00Z   R. H. (Bobby) Smith         Crown Resources Co.     4-15-97     File #   9708003
(Cotton Valley Sand)
E. F. Johnson Gas Unit (d)  42-183-057748-0AA   Verner Kelly                Crown Resources Co.     4-15-97     File #   9710954
411001300
(continued)                 42-183-057748-0AB   Janet E. Sprout             Crown Resources Co.     4-24-97     File #   9710950

                            42-183-057748-0AC   Elizabeth Ellen Wyche       Crown Resources Co.     4-16-97     File #   9708002
                                                Robison

                            42-183-057748-0AD   James Regan Wyche           Crown Resources Co.     4-22-97     File #   9710957

                            42-183-057748-0AE   Jean Terrell                Crown Resources Co.     4-24-97     File #   9710964

                            42-183-057748-0AF   Jane F. Terrell             Crown Resources Co.     4-24-97     File #   9710949

                            42-183-057752-00A   Robert H. Smith             Amoco Production Co.    9-25-95     2886     431

                            42-183-057752-00B   Marjorie Jekot              Amoco Production Co.    9-25-95     2886     413

                            42-183-057752-00C   Margaret C. Smead           Amoco Production Co.    9-25-95     2886     461

                            42-183-057752-00D   Jerry Tillery               Crown Resources Co.     4-1-97      File #   9708001

                            42-183-057752-00E   Joe Neil Tillery            Crown Resources Co.     4-1-97      File #   9708000

                            42-183-057752-00F   Imogene Brogdon             Crown Resources Co.     4-1-97      File #   9710960

                            42-183-057752-00G   Sandra Tillery Bass         Crown Resources Co.     4-1-97      File #   9707081

                            42-183-057752-00H   Louise Tillery Cornell      Crown Resources Co.     4-1-97      File #   9707082

                            42-183-057752-00I   Bryan T. Tillery            Crown Resources Co.     4-1-97      File #   9712769

                            42-183-057752-00J   Melonie Stanley             Crown Resources Co.     4-1-97      File #   9707080

                            42-183-057754-00A   Elnora H. Price             Amoco Production Co.    9-19-95     2886     397

                            42-183-057754-00B   Minnie Flanders Douglas     Amoco Production Co.    9-19-95     2886     393

                            42-183-057754-00C   Sue Boyd Duszik             Amoco Production Co.    9-19-95     2886     401

                            42-183-057754-00D   George Watson Fair          Amoco Production Co.    9-19-95     2886     395

                            42-183-057754-00E   Frances Flanders            Amoco Production Co.    9-19-95     2886     389

                            42-183-057754-00F   Frances Ray Hill Elliott    Amoco Production Co.    9-19-95     2886     449

                            42-183-057754-00G   Mary R. Corley              Amoco Production Co.    9-19-95     2910     441

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-183-057748-00Z   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County and Gregg
E. F. Johnson Gas Unit (d)  42-183-057748-0AA   County, Texas, as more fully
411001300                                       described in that certain
(continued)                 42-183-057748-0AB   Assignment dated effective May
                                                29, 1997, from Amoco Production
                            42-183-057748-0AC   Company to Atlantic Richfield
                                                Company, et al, recorded at
                                                Volume 296, Page 216, Official
                            42-183-057748-0AD   Records of Upshur County, Texas.

                            42-183-057748-0AE   LIMITED IN DEPTH FROM THE SURFACE
                                                DOWN TO 100' BELOW  THE TOTAL
                            42-183-057748-0AF   DEPTH OF THE C W RESOURCES E. F.
                                                JOHNSON WELL.
                            42-183-057752-00A

                            42-183-057752-00B

                            42-183-057752-00C

                            42-183-057752-00D

                            42-183-057752-00E

                            42-183-057752-00F

                            42-183-057752-00G

                            42-183-057752-00H

                            42-183-057752-00I

                            42-183-057752-00J

                            42-183-057754-00A

                            42-183-057754-00B

                            42-183-057754-00C

                            42-183-057754-00D

                            42-183-057754-00E

                            42-183-057754-00F

                            42-183-057754-00G

</TABLE>



                                 Page 140 of 165
<PAGE>   167


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Glenwood Field              42-183-057754-00H   Cecil Flanders                Amoco Production Co.   9-19-95     2886      399
(Cotton Valley Sand)
E. F. Johnson Gas Unit (d)  42-183-057754-00I   Jan Hooker                    Amoco Production Co.   9-19-95     2886      417
411001300
(continued)                 42-183-057754-00J   Michael E. Curtis et al       Amoco Production Co.   9-19-95     2886      391

                            42-183-057754-00K   Bettie W. Ray Walden          Amoco Production Co.   9-19-95     2910      439

                            42-183-057758-00A   James Samuel Davis            Crown Resources Co.    3-28-97     3071      298

                            42-459-057641-00A   Judith M. Wrucke              R. Lacy, Inc.          3-17-95     2845      492

                            42-459-057641-00B   Claude Graves, III            R. Lacy, Inc.          3-29-95     2845      487

                            42-459-057641-00C   Michael Andrew Stieren        R. Lacy, Inc.          8-6-94      171       395

                            42-459-057641-00D   Jennifer L. Stieren           R. Lacy, Inc.          8-6-94      171       398

                            42-459-057641-00E   Georgia Ann Stieren           R. Lacy, Inc.          8-6-94      171       401

                            42-459-057641-00F   Doris K. Ehrenberg            R. Lacy, Inc.          3-17-95     196       212

                            42-459-057641-00G   Gayla S. Graves               R. Lacy, Inc.          3-17-95     196       220

                            42-459-057641-00H   Claude Graves, III            R. Lacy, Inc.          3-17-95     196       216

                            42-459-057705-00A   Annette Felsenthal, et al     R. Lacy, Inc.          8-30-94     171       379

                            42-459-057705-00B   Mary Lou Weiss                R. Lacy, Inc.          8-3-94      167       585

                            42-459-057705-00C   William T. Lee                R. Lacy, Inc.          7-27-95     200       788

                            42-459-057705-00D   Bessie D. Dickson             Crown Resources Co.    4-26-96     225       909

                            42-459-057705-00E   Jeanne F. Jones               Crown Resources Co.    5-8-96      224       952

                            42-459-057705-00F   Helen G. Taft                 Crown Resources Co.    5-3-96      224       989

                            42-459-057705-00G   Grace B. Ward                 Crown Resources Co.    4-24-96     224       993

                            42-459-057705-00H   Alfred M. Yeatts              Crown Resources Co.    4-25-96     224       997

                            42-459-057705-00I   Maydelle Drake                Crown Resources Co.    4-25-96     224       980

                            42-459-057705-00J   Bobbie Preddy Schleimer, Gdn  Amoco Production Co.   6-4-96      229       225

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-183-057754-00H   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County and Gregg
E. F. Johnson Gas Unit (d)  42-183-057754-00I   County, Texas, as more fully
411001300                                       described in that certain
(continued)                 42-183-057754-00J   Assignment dated effective May
                                                29, 1997, from Amoco Production
                            42-183-057754-00K   Company to Atlantic Richfield
                                                Company, et al, recorded at
                            42-183-057758-00A   Volume 296, Page 216, Official
                                                Records of Upshur County, Texas.
                            42-459-057641-00A
                                                LIMITED IN DEPTH FROM THE SURFACE
                            42-459-057641-00B   DOWN TO 100' BELOW  THE TOTAL
                                                DEPTH OF THE C W RESOURCES E. F.
                            42-459-057641-00C   JOHNSON WELL.

                            42-459-057641-00D

                            42-459-057641-00E

                            42-459-057641-00F

                            42-459-057641-00G

                            42-459-057641-00H

                            42-459-057705-00A

                            42-459-057705-00B

                            42-459-057705-00C

                            42-459-057705-00D

                            42-459-057705-00E

                            42-459-057705-00F

                            42-459-057705-00G

                            42-459-057705-00H

                            42-459-057705-00I

                            42-459-057705-00J
</TABLE>



                                 Page 141 of 165

<PAGE>   168


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Glenwood Field              42-459-057706-00A   Charles Smith                R. Lacy, Inc.           8-9-94      168       252
(Cotton Valley Sand)
E. F. Johnson Gas Unit (d)  42-459-057706-00B   Peter C. Johnson             R. Lacy, Inc.           6-3-94      164       929
411001300
(continued)                 42-459-057706-00C   Mary G. Collier              R. Lacy, Inc.           6-3-94      164       919

                            42-459-057706-00D   Mary E. Johnson              R. Lacy, Inc.           6-3-94      164       932

                            42-459-057706-00E   Edward M. Johnson            R. Lacy, Inc.           6-3-94      164       943

                            42-459-057706-00F   Clifford Lee Smith           R. Lacy, Inc.           8-9-94      169       505

                            42-459-057706-00G   Frank H. Smith, Jr.          R. Lacy, Inc.           8-9-94      171       404

                            42-459-057706-00H   Bernie Johnson Williams      R. Lacy, Inc.           6-3-94      163       421

                            42-459-057706-00I   Barbara S. Carpenter         R. Lacy, Inc.           8-9-94      174       163

                            42-459-057706-00J   J. T. Johnson                R. Lacy, Inc.           6-3-94      164       937

                            42-459-057711-00A   Frances Bryant, et al        R. Byron Roach, Ttee    7-27-94     169       212

                            42-459-057711-00B   Alpha Earl Swink Burke       R. Byron Roach, Ttee    7-27-94     169       214

                            42-459-057711-00C   Kyal Williams, Agent         R. Byron Roach, Ttee    7-27-94     169       291

                            42-459-057711-00D   Catherine L. Gilbert et al   R. Byron Roach, Ttee    7-27-94     169       223

                            42-459-057711-00E   George Grogan                R. Byron Roach, Ttee    7-27-94     169       225

                            42-459-057711-00F   Charles H. Mills             R. Byron Roach, Ttee    7-27-94     169       252

                            42-459-057711-00G   Rochelle Sohl Sanders        R. Byron Roach, Ttee    7-28-94     172       776

                            42-459-057711-00H   James Richardson Sohl        R. Byron Roach, Ttee    7-28-94     172       774

                            42-459-057711-00I   Sydonia Sonnenburg           R. Byron Roach, Ttee    7-27-94     169       280

                            42-459-057711-00J   Robin Sohl Ritchie           R. Byron Roach, Ttee    7-28-94     169       278

                            42-459-057713-00A   Chieftain Exploration Co.,   Amoco Production Co     11-25-96    245       371
                                                Inc.

                            42-459-057719-00A   Matt S. McKenzie             R. Byron Roach, Ttee    10-2-94     185       946

                            42-459-057742-000   James Earl Andrews et al     Amoco Production Co.    12-28-95    214       1


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057706-00A   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County and Gregg
E. F. Johnson Gas Unit (d)  42-459-057706-00B   County, Texas, as more fully
411001300                                       described in that certain
(continued)                 42-459-057706-00C   Assignment dated effective May
                                                29, 1997, from Amoco Production
                            42-459-057706-00D   Company to Atlantic Richfield
                                                Company, et al, recorded at
                            42-459-057706-00E   Volume 296, Page 216, Official
                                                Records of Upshur County, Texas.
                            42-459-057706-00F
                                                LIMITED IN DEPTH FROM THE SURFACE
                            42-459-057706-00G   DOWN TO 100' BELOW  THE TOTAL
                                                DEPTH OF THE C W RESOURCES E. F.
                            42-459-057706-00H   JOHNSON WELL.

                            42-459-057706-00I

                            42-459-057706-00J

                            42-459-057711-00A

                            42-459-057711-00B

                            42-459-057711-00C

                            42-459-057711-00D

                            42-459-057711-00E

                            42-459-057711-00F

                            42-459-057711-00G

                            42-459-057711-00H

                            42-459-057711-00I

                            42-459-057711-00J

                            42-459-057713-00A


                            42-459-057719-00A

                            42-459-057742-000
</TABLE>


                                 Page 142 of 165

<PAGE>   169


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Glenwood Field              Unknown             Derek Sean Kowalke            Crown Resources Co.     4-2-97     File #  9710953
(Cotton Valley Sand)
E. F. Johnson Gas Unit (d)  Unknown             J. Patterson Lawson           Crown Resources Co.     4-25-97    File #  9712765
411001300
(continued)                 Unknown             Bank One Texas, Trustee       Crown Resources Co.     5-8-97     File #  9710969

                            Unknown             Judy Gray Bagheri             Crown Resources Co.     6-2-97     File #  9712768

                            Unknown             Terry W. Lindsey              Crown Resources Co.     6-2-97     File #  9715541

                            Unknown             Arthur L. Anderson            Crown Resources Co.     6-2-97     File #  9713777

                            Unknown             Chevron U.S.A., Inc.          Amoco Production Co.    2-1-97     249     92

                            Unknown             Coastal Oil & Gas Corp.       Crown Resources Co.     6-10-97    263     835

                            Unknown             Catherine M. Richard          Crown Resources Co.     5-2-97     File #  9712767

                            Unknown             Doris P. Crowley              R. Lacy, Inc.           7-25-94    168     233

                            Unknown             Nations Bank of Texas, N.A.   Amoco Production Co.    10-5-94    2756    15

- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
Glenwood Field              42-459-057734-000   Marie Lock                    Amoco Production Co.    2-13-96    216     127
(Cotton Valley Sand)
Petty Gas Unit (d)          42-459-057696-00A   Robert H. Petty               Amoco Production Co.    7-13-95    199     229
415000700
33.33% WI                   42-459-057696-00B   John C. Sans                  Crown Resources Co.     7-18-95    197     729

                            42-459-057696-00C   James Elder Willeford         Amoco Production Co.    7-13-95    197     749

                            42-459-057696-00D   Mildred Porter Penick         Amoco Production Co.    7-21-95    197     717

                            42-459-057696-00E   Calvin B. Willeford           Amoco Production Co.    7-13-95    199     249

                            42-459-057696-00F   Sandra Walker Martin          Amoco Production Co.    7-20-95    199     218

                            42-459-057696-00G   Jimmy L. Walker               Amoco Production Co.    7-20-95    199     247

                            42-459-057696-00H   B.J. Porter, Jr.              Amoco Production Co.    7-21-95    199     231

                            42-459-057696-00I   Teresa Mahaffey               Amoco Production Co.    7-13-95    199     216

                            42-459-057696-00J   Clairene R. Dunn              Amoco Production Co.    7-13-95    201     524

                            42-459-057696-00K   Mary Jene Richardson          Amoco Production Co.    7-13-95    197     720

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              Unknown             A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County and Gregg
E. F. Johnson Gas Unit (d)  Unknown             County, Texas, as more fully
411001300                                       described in that certain
(continued)                 Unknown             Assignment dated effective May
                                                29, 1997, from Amoco Production
                            Unknown             Company to Atlantic Richfield
                                                Company, et al, recorded at
                            Unknown             Volume 296, Page 216, Official
                                                Records of Upshur County, Texas.
                            Unknown
                                                LIMITED IN DEPTH FROM THE SURFACE
                            Unknown             DOWN TO 100' BELOW  THE TOTAL
                                                DEPTH OF THE C W RESOURCES E. F.
                            Unknown             JOHNSON WELL.

                            Unknown

                            Unknown

                            Unknown

- --------------------------- ------------------  ----------------------------------- ------------------------------------
Glenwood Field              42-459-057734-000   A tract or tracts of land located   AR-105496
(Cotton Valley Sand)                            in Upshur County, Texas, as more    Farmin Agreement dated December 12, 1996
Petty Gas Unit (d)          42-459-057696-00A   fully described in that certain     Between Amoco Production Company, Farmor,
415000700                                       Assignment dated effective          And C W Resources, Inc., et al, Farmee
33.33% WI                   42-459-057696-00B   January 22, 1997, from Amoco
                                                Production Company to Atlantic      AR-105498
                            42-459-057696-00C   Richfield Company, et al,           Joint Operating Agreement dated December 12,
                                                recorded at Volume 296, Page 233,   1996 between C W Resources, Inc., Operator,
                            42-459-057696-00D   Official Records of Upshur          And Atlantic Richfield Company, et al,
                                                County, Texas.                      non-operators
                            42-459-057696-00E
                                                LIMITED FROM THE SURFACE DOWN TO    AR-105498-006
                            42-459-057696-00F   100' BELOW THE TOTAL DEPTH          Designation of Gas Unit dated effective April
                                                DRILLED IN THE C W RESOURCES        3, 1997, by and between C W Resources, Inc.
                            42-459-057696-00G   PETTY GAS UNIT NO. 1 WELL.          and Atlantic Richfield Company, et al

                            42-459-057696-00H

                            42-459-057696-00I

                            42-459-057696-00J

                            42-459-057696-00K

</TABLE>


                                 Page 143 of 165

<PAGE>   170


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Glenwood Field              42-459-057696-00L   Jimmie D. Hall               Amoco Production Co.     7-13-95     197     695
(Cotton Valley Sand)
Petty Gas Unit (d)          42-459-057696-00M   Norma J. Marshall et al      Amoco Production Co.     7-20-95     203     447
415000700
(continued)                 42-459-057696-00N   C. Dean Walker               Amoco Production Co.     2-23-96     218     553

                            42-459-057696-00O   Kenneth H. Perry et ux       Amoco Production Co.     12-6-96     244     317

                            42-459-057783-00A   Margaret C. Leifeste         Amoco Production Co.     4-22-96     222     898

                            42-459-057783-00B   Shannon Dykes, et al         Amoco Production Co.     4-30-96     224     839

                            42-459-057783-00C   James Rust Crosby            Amoco Production Co.     4-26-96     224     847

                            42-459-057783-00D   H. D. Fullbright             Amoco Production Co.     1-7-97      250     611

                            42-459-057783-00E   Nancy T. Stembridge          Amoco Production Co.     1-7-97      256     808

                            42-459-057783-00F   Florence Lindvall            Amoco Production Co.     1-7-97      247     365

                            42-459-057784-00A   D. T. Gordon                 Amoco Production Co.     12-20-96    245     335

                            42-459-057784-00B   Mary Beth Heiserman          Amoco Production Co.     12-20-96    246     83

                            42-459-057784-00C   Clyde H. Gordon              Amoco Production Co.     12-20-96    250     680

                            42-459-057628-00A   Kenneth H. Perry et ux       Amoco Production Co.     1-19-96     214     480

                            42-459-057649-00A   Margaret Goldreyer           Amoco Production Co.     3-13-95     188     978

                            42-459-057649-00B   Adam Rubey                   Amoco Production Co.     3-13-95     189     402

                            42-459-057649-00C   Stuart Bourne                Amoco Production Co.     3-13-95     187     965

                            42-459-057649-00D   Lowe Figour                  Amoco Production Co.     3-13-95     189     359

                            42-459-057649-00E   Arthur C. Rubey, III         Amoco Production Co.     3-13-95     189     399

                            42-459-057652-00A   Charles Snider et ux         Amoco Production Co.     3-30-95     188     1000

                            42-459-057652-00B   Dorothy Snider Bond          Amoco Production Co.     3-30-95     189     345

                            42-459-057652-00C   Debbie Snider Petta          Amoco Production Co.     3-30-95     188     984

                            42-459-057652-00D   Karen Snider Williams        Amoco Production Co.     3-30-95     189     402

                            42-459-057652-00E   Susan Snider Turner          Amoco Production Co.     3-30-95     195     965

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057696-00L   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County, Texas, as more
Petty Gas Unit (d)          42-459-057696-00M   fully described in that certain
415000700                                       Assignment dated effective
(continued)                 42-459-057696-00N   January 22, 1997, from Amoco
                                                Production Company to Atlantic
                            42-459-057696-00O   Richfield Company, et al,
                                                recorded at Volume 296, Page 233,
                            42-459-057783-00A   Official Records of Upshur
                                                County, Texas.
                            42-459-057783-00B
                                                LIMITED FROM THE SURFACE DOWN TO
                            42-459-057783-00C   100' BELOW THE TOTAL DEPTH
                                                DRILLED IN THE C W RESOURCES
                            42-459-057783-00D   PETTY GAS UNIT NO. 1 WELL.

                            42-459-057783-00E

                            42-459-057783-00F

                            42-459-057784-00A

                            42-459-057784-00B

                            42-459-057784-00C

                            42-459-057628-00A

                            42-459-057649-00A

                            42-459-057649-00B

                            42-459-057649-00C

                            42-459-057649-00D

                            42-459-057649-00E

                            42-459-057652-00A

                            42-459-057652-00B

                            42-459-057652-00C

                            42-459-057652-00D

                            42-459-057652-00E
</TABLE>



                                 Page 144 of 165

<PAGE>   171


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>

Glenwood Field              42-459-057652-00G   William B. Rubey Estate      Amoco Production Co.     3-13-95     188    995
(Cotton Valley Sand)
Petty Gas Unit (d)          42-459-057652-00H   Christina Rubey Baar         Amoco Production Co.     3-13-95     188    971
415000700
(continued)                 42-459-057652-00I   Marion Seward Rubey          Amoco Production Co.     3-13-95     187    1008

                            42-459-057652-00J   Robert Neal Rubey            Amoco Production Co.     3-13-95     191    300

                            42-459-057652-00K   William B. Rubey Jr. Est     Amoco Production Co.     3-13-95     188    988

                            42-459-057670-00A   George S. Heyer, Jr.         Amoco Production Co.     4-10-96     226    737

                            42-459-057670-00B   Henri L. Tallichet           Amoco Production Co.     4-10-96     222    912

                            42-459-057670-00C   George S. Tallichet          Amoco Production Co.     4-10-96     224    842

                            42-459-057670-00D   Robert L. Bradley et al      Amoco Production Co.     3-25-96     222    892

                            42-459-057757-00A   Marian Lyeth Davis           Amoco Production Co.     3-13-95     189    352

                            42-459-057785-00A   Goodrich-Malloy Trust        Crown Resources Co.      2-10-97     253    237

                            42-459-057785-00B   John F. Malloy et al         Crown Resources Co.      6-3-97      264    508

                            42-459-057785-00C   Robert R. Goodrich           Amoco Production Co.     10-9-97     275    57

                            Unknown             Donald R. Burgett et ux      C W Resources Co.        1-3-97      247    948

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057652-00G   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County, Texas, as more
Petty Gas Unit (d)          42-459-057652-00H   fully described in that certain
415000700                                       Assignment dated effective
(continued)                 42-459-057652-00I   January 22, 1997, from Amoco
                                                Production Company to Atlantic
                            42-459-057652-00J   Richfield Company, et al,
                                                recorded at Volume 296, Page 233,
                            42-459-057652-00K   Official Records of Upshur
                                                County, Texas.
                            42-459-057670-00A
                                                LIMITED FROM THE SURFACE DOWN TO
                            42-459-057670-00B   100' BELOW THE TOTAL DEPTH
                                                DRILLED IN THE C W RESOURCES
                            42-459-057670-00C   PETTY GAS UNIT NO. 1 WELL.

                            42-459-057670-00D

                            42-459-057757-00A

                            42-459-057785-00A

                            42-459-057785-00B

                            42-459-057785-00C

                            Unknown


</TABLE>







                                 Page 145 of 165

<PAGE>   172


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Glenwood Field              42-459-057704-00A   Sylvia M. Fowler             R. Byron Roach, Trustee  8-9-94      169     221
(Cotton Valley Sand)
Rose Kirkpatrick Gas Unit
(d)
410900700
33.33% WI BPO
25.00% NRI BPO
23.331% WI APO
17.50% NRI APO
                            42-459-057704-00B   Cathy Moore Hunter           R. Byron Roach, Trustee  8-9-94      169     232

                            42-459-057704-00C   Nicky L. Roberts, et al      R. Byron Roach, Trustee  8-9-94      169     276

                            42-459-057706-00A   Charles Smith                R. Lacy, Inc.            8-9-94      168     252

                            42-459-057706-00B   Peter C. Johnson             R. Lacy, Inc.            6-3-94      164     929

                            42-459-057706-00C   Mary G. Collier              R. Lacy, Inc.            6-3-94      164     919

                            42-459-057706-00D   Mary E. Johnson              R. Lacy, Inc.            6-3-94      164     932

                            42-459-057706-00E   Edward M. Johnson            R. Lacy, Inc.            6-3-94      164     943

                            42-459-057706-00F   Clifford Lee Smith           R. Lacy, Inc.            8-9-94      169     505

                            42-459-057706-00G   Frank H. Smith, Jr.          R. Lacy, Inc.            8-9-94      171     404

                            42-459-057706-00H   Bernie Lee Johnson Williams  R. Lacy, Inc.            6-3-94      163     421

                            42-459-057706-00I   Barbara S. Carpenter         R. Lacy, Inc.            8-9-94      171     404


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057704-00A   A tract or tracts of land located   AR-105496
(Cotton Valley Sand)                            in Upshur County and Gregg          Farmin Agreement dated December 12, 1996.
Rose Kirkpatrick Gas Unit                       County, Texas, as more fully
(d)                                             described in that certain           AR-105498
410900700                                       unrecorded Assignment dated         Joint Operating Agreement dated December 12,
33.33% WI BPO                                   effective May 1, 1997, from Amoco   1996.
25.00% NRI BPO                                  Production Company to Atlantic
23.331% WI APO                                  Richfield Company
17.50% NRI APO
                            42-459-057704-00B   LIMITED TO THAT INTERVAL FROM THE
                                                SURFACE DOWN TO 100' BELOW THE
                            42-459-057704-00C   TOTAL DEPTH OF THE C W RESOURCES
                                                ROSE KIRKPATRICK GAS UNIT WELL
                            42-459-057706-00A   NO. 1.

                            42-459-057706-00B

                            42-459-057706-00C

                            42-459-057706-00D

                            42-459-057706-00E

                            42-459-057706-00F

                            42-459-057706-00G

                            42-459-057706-00H

                            42-459-057706-00I

</TABLE>




                                 Page 146 of 165

<PAGE>   173


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                         DEED
PROPERTY CODE                                                                                         LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE           DATE        BOOK     PAGE
- --------------------------- -----------------   --------------------------   ---------------------    ---------   ----     ----
<S>                         <C>                 <C>                          <C>                      <C>         <C>     <C>
Glenwood Field              42-459-057706-00J   J. T. Johnson                 R. Lacy, Inc.           6-3-94      164       937
(Cotton Valley Sand)
Rose Kirkpatrick Gas Unit   42-459-057740-00A   Kathleen D. Mincey            R. Lacy, Inc.           6-6-94      164       436
(d)
410900700                   42-459-057740-00B   Nancy Sain Henderson          R. Lacy, Inc.           6-6-94      164       434
(continued)
                            42-459-057740-00C   Judy D. Banks                 R. Lacy, Inc.           6-6-94      164       423

                            42-459-057740-00D   Deanne D. Buchanan            R. Lacy, Inc.           6-6-94      164       426

                            42-459-057740-00E   A. R. Sweeney                 R. Lacy, Inc.           6-6-94      162       419

                            42-459-057740-00F   LeNeve Dunbar Bell            R. Lacy, Inc.           6-6-94      163       399

                            42-459-057740-00G   Rowena Chodrow                R. Lacy, Inc.           6-22-94     164       960

                            42-459-057740-00H   Allan Earl Wisenbaker,        Amoco Production Co.    7-17-96     235       51
                                                et al

                            42-459-057740-00I   The Newby Foresee Trust,      J. Don Westbrook        5-25-94     168       285
                                                et al

                            42-459-057741-00A   Preston D. Kiel               R. Lacy, Inc.           9-19-97     168       129

                            42-459-057741-00B   Kaplan Partners, Ltd.         R. Lacy, Inc.           6-9-94      164       974

                            42-459-057741-00C   Preston D. Kiel               R. Byron Roach, Trustee 8-9-94      169       243

                            42-459-057741-00D   Nancy  Sain Henderson         Crown Resources Co.     2-18-97     253       253

                            42-459-057741-00E   Doris C. Rea                  Crown Resources Co.     2-17-97     253       278

                            42-459-057741-00F   Cole McCrory                  Crown Resources Co.     2-17-97     257       341

                            42-459-057741-00G   Mary Bell Cherry              Crown Resources Co.     2-12-97     257       347

                            42-459-057741-00H   Cerre B. Diboll               Crown Resources Co.     2-17-97     257       339

                            42-459-057741-00I   Lewis B. Pitts                Crown Resources Co.     2-18-97     253       276

                            42-459-057741-00J   Pat McCrory                   Crown Resources Co.     2-17-97     261       334

                            42-459-057741-00K   Rebecca Jenkins               Crown Resources Co.     2-27-97     257       377

                            42-459-057741-00L   Melonie Stanley               Crown Resources Co.     2-27-97     254       883


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057706-00J   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County and Gregg
Rose Kirkpatrick Gas Unit   42-459-057740-00A   County, Texas, as more fully
(d)                                             described in that certain
410900700                   42-459-057740-00B   unrecorded Assignment dated
(continued)                                     effective May 1, 1997, from Amoco
                            42-459-057740-00C   Production Company to Atlantic
                                                Richfield Company
                            42-459-057740-00D
                                                LIMITED TO THAT INTERVAL FROM THE
                            42-459-057740-00E   SURFACE DOWN TO 100' BELOW THE
                                                TOTAL DEPTH OF THE C W RESOURCES
                            42-459-057740-00F   ROSE KIRKPATRICK GAS UNIT WELL
                                                NO. 1.
                            42-459-057740-00G

                            42-459-057740-00H


                            42-459-057740-00I


                            42-459-057741-00A

                            42-459-057741-00B

                            42-459-057741-00C

                            42-459-057741-00D

                            42-459-057741-00E

                            42-459-057741-00F

                            42-459-057741-00G

                            42-459-057741-00H

                            42-459-057741-00I

                            42-459-057741-00J

                            42-459-057741-00K

                            42-459-057741-00L

</TABLE>



                                 Page 147 of 165

<PAGE>   174


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Glenwood Field              42-459-057741-00M   George G. Vaught, Jr.        Crown Resources Co.     2-28-97     253       282
(Cotton Valley Sand)
Rose Kirkpatrick Gas        42-459-057741-00N   McCulliss Resources Company, Crown Resources Co.     2-28-97     253       274
Unit (d)                                        Inc.
410900700
(continued)                 42-459-057741-00O   Bryan T. Tillery             Crown Resources Co.     2-27-97     257       343

                            42-459-057741-00P   C. O. Christian              Crown Resources Co.     5-7-97      269       563

                            42-459-057741-00Q   Imogene Brogdon              Crown Resources Co.     2-16-97     269       561

                            42-459-057741-00R   Jerry Tillery                Crown Resources Co.     2-27-97     257       333

                            42-459-057741-00S   Louise Tillery Cornell       Crown Resources Co.     2-27-97     257       335

                            42-459-057741-00T   Joe Neil Tillery             Crown Resources Co.     2-26-97     253       280

                            42-459-057741-00U   Sandra Tillery Bass          Crown Resources Co.     2-25-97     253       233

                            42-459-057741-00V   Harriett I. Bryant           Crown Resources Co.     3-7-97      257       331

                            42-183-057746-00A   Burford I. King, et al       Amoco Production Co.    11-1-95     2895      257

                            42-183-057747-00A   Martha Rose Biggs, Trustee   Amoco Production Co.    11-1-95     2895      252

                            42-183-057747-00B   Leneve D. Bell               Amoco Production Co.    10-26-95    2886      423

                            42-183-057747-00C   Deanne Buchanan              Amoco Production Co.    10-26-95    2886      386

                            42-183-057747-00D   Stanley C. Draper            Amoco Production Co.    11-1-95     2895      250

                            42-183-057747-00E   John David Draper            Amoco Production Co.    11-1-95     2895      248

                            42-183-057747-00F   Judy Banks                   Amoco Production Co.    10-26-95    2895      242

                            42-183-057747-00G   Bessie D. Dickson            Amoco Production Co.    10-26-95    2886      425

                            42-183-057747-00H   Kathleen D. Mincey           Amoco Production Co.    10-26-95    2952      284

                            42-183-057749-00A   Ron Dunbar, et al            Crown Resources Co.     3-15-96     2964      85

                            42-183-057751-00A   Anne M. Ferguson             Amoco Production Co.    10-11-95    2895      221

                            42-183-057751-00B   Nannie Jane Sims             Amoco Production Co.    10-11-95    2886      455

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ------------------------------------
<S>                         <C>                 <C>                                 <C>

Glenwood Field              42-459-057741-00M   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County and Gregg
Rose Kirkpatrick Gas        42-459-057741-00N   County, Texas, as more fully
Unit (d)                                        described in that certain
410900700                                       unrecorded Assignment dated
(continued)                 42-459-057741-00O   effective May 1, 1997, from Amoco
                                                Production Company to Atlantic
                            42-459-057741-00P   Richfield Company

                            42-459-057741-00Q   LIMITED TO THAT INTERVAL FROM THE
                                                SURFACE DOWN TO 100' BELOW THE
                            42-459-057741-00R   TOTAL DEPTH OF THE C W RESOURCES
                                                ROSE KIRKPATRICK GAS UNIT WELL
                            42-459-057741-00S   NO. 1.

                            42-459-057741-00T

                            42-459-057741-00U

                            42-459-057741-00V

                            42-183-057746-00A

                            42-183-057747-00A

                            42-183-057747-00B

                            42-183-057747-00C

                            42-183-057747-00D

                            42-183-057747-00E

                            42-183-057747-00F

                            42-183-057747-00G

                            42-183-057747-00H

                            42-183-057749-00A

                            42-183-057751-00A

                            42-183-057751-00B
</TABLE>




                                 Page 148 of 165

<PAGE>   175


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Glenwood Field              42-183-057751-00C   Lex B. Smith                 Amoco Production Co.     10-11-95    2895    223
(Cotton Valley Sand)
Rose Kirkpatrick Gas Unit   42-183-057751-00D   Allan Earl Wisenbaker,       Amoco Production Co.     7-17-96     2989    627
(d)                                             et al
410900700
(continued)                 42-183-057753-00A   Marvin H. Cowan, Jr.         Amoco Production Co.     9-20-95     2886    427

                            42-183-057753-00B   Roy O. Cowan                 Amoco Production Co.     9-20-95     2895    238

                            42-183-057753-00C   Carol Hooper                 Amoco Production Co.     9-20-95     2886    403

                            42-183-057753-00D   Ann Hooper Stacy             Amoco Production Co.     9-20-95     2886    406

                            42-183-057753-00E   Susan Schmidt                Amoco Production Co.     9-20-95     2886    409

                            42-183-057753-00F   W. R. Hughes Trust           Amoco Production Co.     9-20-95     2886    451

                            42-183-057753-00G   James Warren Cowan           Amoco Production Co.     10-17-95    2886    419

                            42-183-057753-00H   Carol C. Prinz, et al        Amoco Production Co.     9-20-95     2895    236

                            42-183-057753-00I   James Earl Andrews, et al    Amoco Production Co.     12-28-95    2924    368

                            42-183-057753-00J   Robert L. Cowan              Amoco Production Co.     10-17-95    2895    240

                            42-183-057753-00K   East Texas Royalty and       R. Lacy, Inc.            1-20-95     2790    63
                                                Investment Co.

                            42-183-057755-00A   Blaine Aric                  Amoco Production Co.     9-19-95     2952    290

                            42-183-057755-00B   Vivian Elise Dulling         Amoco Production Co.     9-19-95     2910    435

                            42-183-058125-00A   Boatmen's Trust Co. of       Crown Resources Co.      5-6-97      272     240
                                                Arkansas, et al

                            42-459-057785-00A   Goodrich-Malloy Trust        Crown Resources Co.      2-10-97     253     237

                            42-459-057785-00B   John F. Malloy, et al        Crown Resources Co.      6-3-97      264     508

                            42-459-057785-00C   Robert R. Goodrich           Amoco Production Co.     10-9-97     296     233


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-183-057751-00C   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County and Gregg
Rose Kirkpatrick Gas Unit   42-183-057751-00D   County, Texas, as more fully
(d)                                             described in that certain
410900700                                       unrecorded Assignment dated
(continued)                 42-183-057753-00A   effective May 1, 1997, from Amoco
                                                Production Company to Atlantic
                            42-183-057753-00B   Richfield Company

                            42-183-057753-00C   LIMITED TO THAT INTERVAL FROM THE
                                                SURFACE DOWN TO 100' BELOW THE
                            42-183-057753-00D   TOTAL DEPTH OF THE C W RESOURCES
                                                ROSE KIRKPATRICK GAS UNIT WELL
                            42-183-057753-00E   NO. 1.

                            42-183-057753-00F

                            42-183-057753-00G

                            42-183-057753-00H

                            42-183-057753-00I

                            42-183-057753-00J

                            42-183-057753-00K


                            42-183-057755-00A

                            42-183-057755-00B

                            42-183-058125-00A


                            42-459-057785-00A

                            42-459-057785-00B

                            42-459-057785-00C

</TABLE>




                                 Page 149 of 165

<PAGE>   176


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Glenwood Field              42-459-057625-00A   Phillip D. Sensing, et al     Amoco Production Co.    2/13/96     218     545
(Cotton Valley Sand)
Rubey Estate Gas Unit (d)   42-459-057625-00B   Edgar B. Sensing              Amoco Production Co.    2/13/96     218     547
416000200
27.204487% WI               42-459-057628-00A   Kenneth H. Perry et ux        Amoco Production Co.    1/19/96     214     480

                            42-459-057649-00A   Margaret Goldreyer            Amoco Production Co.    3/13/95     188     978

                            42-459-057649-00B   Adam Rubey                    Amoco Production Co.    3/13/95     189     402

                            42-459-057649-00C   Stuart Bourne                 Amoco Production Co.    3/13/95     187     965

                            42-459-057649-00D   Lowe Figour                   Amoco Production Co.    3/13/95     189     359

                            42-459-057649-00E   Arthur C. Rubey, III          Amoco Production Co.    3/13/95     189     399

                            42-459-057652-00A   Charles Snider et ux          Amoco Production Co.    3/30/95     188     1000

                            42-459-057652-00B   Dorothy Snider Bond           Amoco Production Co.    3/30/95     189     345

                            42-459-057652-00C   Debbie Snider Petta           Amoco Production Co.    3/30/95     188     984

                            42-459-057652-00D   Karen Snider Williams         Amoco Production Co.    3/30/95     189     409

                            42-459-057652-00E   Susan Snider Turner           Amoco Production Co.    3/30/95     195     46

                            42-459-057652-00F   Joe Snider et ux Lajuan       Amoco Production Co.    3/30/95     188     1004

                            42-459-057652-00G   William B. Rubey Estate       Amoco Production Co.    3/13/95     188     995

                            42-459-057652-00H   Christina Rubey Baar          Amoco Production Co.    3/13/95     188     971

                            42-459-057652-00I   Marion Seward Rubey           Amoco Production Co.    3/13/95     187     1008

                            42-459-057652-00J   Robert Neal Rubey             Amoco Production Co.    3/13/95     191     300

                            42-459-057652-00K   William B. Rubey Jr. Est      Amoco Production Co.    3/13/95     188     988

                            42-459-057653-000   Larry Dean Bishop et ux       Amoco Production Co.    12/11/96    247     356

                            42-459-057654-00A   Lee Hall Tillman              Amoco Production Co.    12/6/96     247     358

                            42-459-057655-00A   ETEX Telephone Co-op          Amoco Production Co.    4/10/95     222     896


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057625-00A   A tract or tracts of land located   AR-105496
(Cotton Valley Sand)                            in Upshur County, Texas, as more    Farmin Agreement dated December 12, 1996
Rubey Estate Gas Unit (d)   42-459-057625-00B   fully described in that certain     Between Amoco Production Company, Farmor,
416000200                                       Assignment dated effective March    And C W Resources, Inc., et al, Farmee
27.204487% WI               42-459-057628-00A   1, 1997, from Amoco Production
                                                Company to Atlantic Richfield       AR-105498
                            42-459-057649-00A   Company, et al, recorded at         Joint Operating Agreement dated December 12,
                                                Volume 296, Page 245, Official      1996 between C W Resources, Inc., Operator,
                            42-459-057649-00B   Records of Upshur County, Texas.    And Atlantic Richfield Company, et al,
                                                                                    non-operators
                            42-459-057649-00C   LIMITED IN DEPTH FROM THE SURFACE
                                                DOWN TO 100' BELOW THE DEPTH        AR-105498-003
                            42-459-057649-00D   DRILLED IN THE C W RESOURCES        Designation of Gas Unit dated effective
                                                RUBEY ESTATE GAS UNIT NO. 1 WELL.   December 12, 1996 between C W Resources, Inc.
                            42-459-057649-00E                                       and Atlantic Richfield Company, et al

                            42-459-057652-00A

                            42-459-057652-00B

                            42-459-057652-00C

                            42-459-057652-00D

                            42-459-057652-00E

                            42-459-057652-00F

                            42-459-057652-00G

                            42-459-057652-00H

                            42-459-057652-00I

                            42-459-057652-00J

                            42-459-057652-00K

                            42-459-057653-000

                            42-459-057654-00A

                            42-459-057655-00A

</TABLE>




                                 Page 150 of 165

<PAGE>   177


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Glenwood Field              42-459-057662-00A   Ruth McAdams Ralston         Amoco Production Co.     5/14/96     224     831
(Cotton Valley Sand)
Rubey Estate Gas Unit (d)   42-459-057663-00A   Richard L. Parker et ux      Amoco Production Co.     5/14/96     227     242
416000200
(continued)                 42-459-057666-00A   William Fred Denton          Amoco Production Co.     7/16/96     231     881

                            42-459-057668-00A   Curtis Webb et ux            Amoco Production Co.     2/21/96     229     525

                            42-459-057669-00A   Henry P. Bishop et ux        Amoco Production Co.     11/10/94    177     54

                            42-459-057670-00A   George S. Heyer, Jr.         Amoco Production Co.     4/10/96     226     737

                            42-459-057670-00B   Henri L. Tallichet           Amoco Production Co.     4/10/96     222     912

                            42-459-057670-00C   George S. Tallichet          Amoco Production Co.     4/10/96     224     842

                            42-459-057670-00D   Robert L. Bradley et al      Amoco Production Co.     3/25/96     222     892

                            42-459-057671-00A   Marjorie Musselman           Amoco Production Co.     12/8/94     186     827

                            42-459-057671-00B   Diane Meadow                 Amoco Production Co.     12/15/94    186     830

                            42-459-057671-00C   Margaret Musslewhite         Amoco Production Co.     12/8/94     183     231

                            42-459-057671-00D   Elnora Williams              Amoco Production Co.     12/13/94    189     413

                            42-459-057671-00E   John Fanning                 Amoco Production Co.     12/15/94    186     800

                            42-459-057671-00F   Norris Lynn Fanning          Amoco Production Co.     12/15/94    186     802

                            42-459-057671-00G   Thelma Buie                  Amoco Production Co.     2/14/95     186     775

                            42-459-057671-00H   Austin Avenue United         Amoco Production Co.     3/16/95     188     968
                                                Methodist Church

                            42-459-057671-00I   Nelda Massey                 Amoco Production Co.     3/16/95     188     981

                            42-459-057671-00J   Myrtle Threlkeld             Amoco Production Co.     3/16/95     108     1008

                            42-459-057671-00K   Eleanor Walker               Amoco Production Co.     3/16/95     188     31

                            42-459-057671-00L   Laura Lennard                Amoco Production Co.     3/16/95     187     984

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057662-00A   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County, Texas, as more
Rubey Estate Gas Unit (d)   42-459-057663-00A   fully described in that certain
416000200                                       Assignment dated effective March
(continued)                 42-459-057666-00A   1, 1997, from Amoco Production
                                                Company to Atlantic Richfield
                            42-459-057668-00A   Company, et al, recorded at
                                                Volume 296, Page 245, Official
                            42-459-057669-00A   Records of Upshur County, Texas.

                            42-459-057670-00A   LIMITED IN DEPTH FROM THE SURFACE
                                                DOWN TO 100' BELOW THE DEPTH
                            42-459-057670-00B   DRILLED IN THE C W RESOURCES
                                                RUBEY ESTATE GAS UNIT NO. 1 WELL.
                            42-459-057670-00C

                            42-459-057670-00D

                            42-459-057671-00A

                            42-459-057671-00B

                            42-459-057671-00C

                            42-459-057671-00D

                            42-459-057671-00E

                            42-459-057671-00F

                            42-459-057671-00G

                            42-459-057671-00H


                            42-459-057671-00I

                            42-459-057671-00J

                            42-459-057671-00K

                            42-459-057671-00L

</TABLE>




                                 Page 151 of 165

<PAGE>   178


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK     PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----     ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>      <C>
Glenwood Field              42-459-057671-00M   Alice Biett                  Amoco Production Co.    3/16/95     191       310
(Cotton Valley Sand)
Rubey Estate Gas Unit (d)   42-459-057671-00N   Maxine Dwyer                 Amoco Production Co.    3/16/95     188       975
416000200
(continued)                 42-459-057671-00O   Gladys Messer                Amoco Production Co.    12/6/94     178       968

                            42-459-057671-00P   James Fanning                Amoco Production Co.    12/15/94    180       136

                            42-459-057671-00Q   Fay Fanning, a widow         Amoco Production Co.    12/9/94     180       139

                            42-459-057671-00R   Rosemary Trevino             Amoco Production Co.    12/?/94     183       343

                            42-459-057672-00A   M. Isabel Burke              Amoco Production Co.    5/11/95     194       873

                            42-459-057672-00B   Earl B. Johnson et ux        Amoco Production Co.    5/11/95     195       20

                            42-459-057672-00C   Leo M. Davis, et al          Amoco Production Co.    5/17/95     220       150

                            42-459-057672-00D   Floy Butler et al            Amoco Production Co.    5/19/95     197       650

                            42-459-057672-00E   Mary Ryon Talley             Amoco Production Co.    5/24/96     226       762

                            42-459-057672-00F   Mimi O. Davis                Amoco Production Co.    5/28/96     226       733

                            42-459-057672-00G   Angus G. Wynne, III          Amoco Production Co.    5/22/96     226       764

                            42-459-057672-00H   Dorothy O. Range             Amoco Production Co.    5/24/96     227       252

                            42-459-057672-00I   Martha T. Gracey             Amoco Production Co.    6/3/96      228       457

                            42-459-057672-00J   Patricia J. Singer           Amoco Production Co.    5/30/96     229       515

                            42-459-057672-00K   A. R. Davis, Jr.             Amoco Production Co.    5/28/96     226       735

                            42-459-057672-00L   Martha Jane Holford          Amoco Production Co.    6/10/96     228       459

                            42-459-057672-00M   Herschel G. Brown            Amoco Production Co.    5/28/96     226       729

                            42-459-057672-00N   Clifton H. Tucker            Amoco Production Co.    6/3/96      229       523

                            42-459-057672-00O   Madeline T. Nolan            Amoco Production Co.    6/3/96      230       609

                            42-459-057672-00P   Bedford S. Wynne, Jr.        Amoco Production Co.    6/4/96      227       250

                            42-459-057672-00Q   Jerry Lynn Butler            Amoco Production Co.    5/28/96     230       607

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057671-00M   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County, Texas, as more
Rubey Estate Gas Unit (d)   42-459-057671-00N   fully described in that certain
416000200                                       Assignment dated effective March
(continued)                 42-459-057671-00O   1, 1997, from Amoco Production
                                                Company to Atlantic Richfield
                            42-459-057671-00P   Company, et al, recorded at
                                                Volume 296, Page 245, Official
                            42-459-057671-00Q   Records of Upshur County, Texas.

                            42-459-057671-00R   LIMITED IN DEPTH FROM THE SURFACE
                                                DOWN TO 100' BELOW THE DEPTH
                            42-459-057672-00A   DRILLED IN THE C W RESOURCES
                                                RUBEY ESTATE GAS UNIT NO. 1 WELL.
                            42-459-057672-00B

                            42-459-057672-00C

                            42-459-057672-00D

                            42-459-057672-00E

                            42-459-057672-00F

                            42-459-057672-00G

                            42-459-057672-00H

                            42-459-057672-00I

                            42-459-057672-00J

                            42-459-057672-00K

                            42-459-057672-00L

                            42-459-057672-00M

                            42-459-057672-00N

                            42-459-057672-00O

                            42-459-057672-00P

                            42-459-057672-00Q

</TABLE>




                                 Page 152 of 165

<PAGE>   179


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>

Glenwood Field              42-459-057672-00R   Greta Jackson Newman         Amoco Production Co.     5/28/96     227     244
(Cotton Valley Sand)
Rubey Estate Gas Unit (d)   42-459-057672-00S   William F. Holmes            Amoco Production Co.     6/10/96     230     605
416000200
(continued)                 42-459-057672-00T   J. Elmer Newman              Amoco Production Co.     5/28/96     231     879

                            42-459-057672-00U   David E. Wynne               Amoco Production Co.     5/22/96     235     446

                            42-459-057672-00V   M. Temple Wynne              Amoco Production Co.     5/22/96     240     642

                            42-459-057672-00W   Anne S. Wynne                Amoco Production Co.     6/5/96      240     640

                            42-459-057672-00X   Roger A. Poore               Amoco Production Co.     7/5/96      240     620

                            42-459-057672-00Y   Gena Piccolo                 Amoco Production Co.     7/5/96      240     636

                            42-459-057673-00A   Glenwood Water Supply        Amoco Production Co.     3/5/96      218     533

                            42-459-057674-00A   David A. Whitfield           Amoco Production Co.     2/16/96     217     199

                            42-459-057675-00A   Brenda Allen                 Amoco Production Co.     2/16/96     217     166

                            42-459-057676-00A   Bonnie Jean Blalack          Amoco Production Co.     2/21/96     217     170

                            42-459-057677-00A   Donald Ross Chambers         Amoco Production Co.     5/10/96     224     845

                            42-459-057678-00A   Garry Lenn Thomas            Amoco Production Co.     2/2/96      216     141

                            42-459-057679-00A   Ruth Ell Blalack             Amoco Production Co.     2/15/96     216     113

                            42-459-057680-00A   Payne Bogardus               Amoco Production Co.     2/15/96     216     115

                            42-459-057681-00A   Betty Jean Allen             Amoco Production Co.     2/12/96     216     106

                            42-459-057682-00A   William L. Smith et al       Amoco Production Co.     2/19/96     217     192

                            42-459-057683-00A   F. D. Sams et ux             Amoco Production Co.     2/2/96      216     135

                            42-459-057684-00A   F. D. Sams et ux             Amoco Production Co.     2/12/96     216     137

                            42-459-057685-00A   Jacky Lee Drake              Amoco Production Co.     11/9/94     177     62

                            42-459-057685-00B   Z. A. Webb                   Amoco Production Co.     11/9/94     177     92

                            42-459-057685-00C   Erma Jean Rambo              Amoco Production Co.     11/9/94     177     87

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057672-00R   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County, Texas, as more
Rubey Estate Gas Unit (d)   42-459-057672-00S   fully described in that certain
416000200                                       Assignment dated effective March
(continued)                 42-459-057672-00T   1, 1997, from Amoco Production
                                                Company to Atlantic Richfield
                            42-459-057672-00U   Company, et al, recorded at
                                                Volume 296, Page 245, Official
                            42-459-057672-00V   Records of Upshur County, Texas.

                            42-459-057672-00W   LIMITED IN DEPTH FROM THE SURFACE
                                                DOWN TO 100' BELOW THE DEPTH
                            42-459-057672-00X   DRILLED IN THE C W RESOURCES
                                                RUBEY ESTATE GAS UNIT NO. 1 WELL.
                            42-459-057672-00Y

                            42-459-057673-00A

                            42-459-057674-00A

                            42-459-057675-00A

                            42-459-057676-00A

                            42-459-057677-00A

                            42-459-057678-00A

                            42-459-057679-00A

                            42-459-057680-00A

                            42-459-057681-00A

                            42-459-057682-00A

                            42-459-057683-00A

                            42-459-057684-00A

                            42-459-057685-00A

                            42-459-057685-00B

                            42-459-057685-00C
</TABLE>




                                 Page 153 of 165

<PAGE>   180


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>

Glenwood Field              42-459-057686-00A   Odie Banks et al             Amoco Production Co.     10/4/94     180     128
(Cotton Valley Sand)
Rubey Estate Gas Unit (d)   42-459-057720-000   Max Salter et al             Amoco Production Co.     5/13/95     195     40
416000200
(continued)                 42-459-057721-000   Max Salter                   Amoco Production Co.     5/13/95     195     38

                            42-459-057732-000   Henry P. Bishop et ux        Amoco Production Co.     12/6/96     245     333

                            42-459-057735-000   Jeffrey D. Davis             Amoco Production Co.     2/13/96     216     117

                            42-459-057736-000   Greg Nuckolls et ux          Amoco Production Co.     2/7/96      216     132

                            42-459-057737-000   Palmer J. Sellers            Amoco Production Co.     2/2/96      216     139

                            42-459-057738-000   Zikie Lee Graham et ux       Amoco Production Co.     2/6/96      215     48

                            42-459-057744-000   Maxine Childress             Amoco Production Co.     11/30/94    178     951

                            42-459-057757-00A   Marian Lyeth Davis           Amoco Production Co.     3/13/95     189     352

                            42-459-057803-000   J. R. McCormick et ux        Amoco Production Co.     2/7/97      250     687

                            42-459-057804-000   Sylvio R. Cote et ux         Amoco Production Co.     2/10/97     250     675

                            42-459-057805-000   Arnold Grimes et ux          Amoco Production Co.     2/10/97     250     683

                            42-459-057806-00A   Mary Kathryn McKinley        Amoco Production Co.     6/17/97     265     966
                                                Drake

                            42-459-057806-00B   Leo McKinley et al           Amoco Production Co.     5/28/97     265     968


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057686-00A   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County, Texas, as more
Rubey Estate Gas Unit (d)   42-459-057720-000   fully described in that certain
416000200                                       Assignment dated effective March
(continued)                 42-459-057721-000   1, 1997, from Amoco Production
                                                Company to Atlantic Richfield
                            42-459-057732-000   Company, et al, recorded at
                                                Volume 296, Page 245, Official
                            42-459-057735-000   Records of Upshur County, Texas.

                            42-459-057736-000   LIMITED IN DEPTH FROM THE SURFACE
                                                DOWN TO 100' BELOW THE DEPTH
                            42-459-057737-000   DRILLED IN THE C W RESOURCES
                                                RUBEY ESTATE GAS UNIT NO. 1 WELL.
                            42-459-057738-000

                            42-459-057744-000

                            42-459-057757-00A

                            42-459-057803-000

                            42-459-057804-000

                            42-459-057805-000

                            42-459-057806-00A


                            42-459-057806-00B

</TABLE>


                                 Page 154 of 165

<PAGE>   181


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Glenwood Field              42-459-057626-00A   Norma Maclin Ray             R. Lacy, Inc.            3-6-95      196     239
(Cotton Valley Sand)
Watts Heirs Gas Unit (d)    42-459-057626-00B   B.J. Barclay et al           R. Lacy, Inc.            3-6-95      186     989
411578300
33.33% WI                   42-459-057626-00C   Myra Lynn Ray Roberts        R. Lacy, Inc.            3-6-95      186     994

                            42-459-057627-00A   Shirley L. Day et vir        R. Lacy, Inc.            9-15-94     172     558

                            42-459-057631-00A   T. L. Johnson, Jr.           Crown Resources Co.      5-6-96      229     161

                            42-459-057631-00B   Pacific Enterprises ABC      Amoco Production Co.     4-11-96     222     732
                                                Corporation

                            42-459-057631-00C   Tillman T. Johnson           R. Lacy, Inc.            8-26-94     169     500

                            42-459-057633-00A   Mary Nell Floyd              Amoco Production Co.     5-29-96     225     911

                            42-459-057634-00A   Wesley E. Frisbie            R. Lacy, Inc.            7-13-94     174     157

                            42-459-057634-00B   Marguerite Molder            R. Lacy, Inc.            7-13-94     168     244

                            42-459-057634-00C   David S. Humphrey            R. Lacy, Inc.            7-1-94      171     381



<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057626-00A   A tract or tracts of land located   AR-105496
(Cotton Valley Sand)                            in Upshur County and Gregg          Farmin Agreement dated December 12, 1996
Watts Heirs Gas Unit (d)    42-459-057626-00B   County, Texas, as more fully        Between Amoco Production Company, Farmor,
411578300                                       described in that certain           And C W Resources, Inc., et al, Farmee
33.33% WI                   42-459-057626-00C   Assignment dated effective June
                                                22, 1997, from Amoco Production     AR-105498
                            42-459-057627-00A   Company to Atlantic Richfield       Joint Operating Agreement dated December 12,
                                                Company, et al, recorded at         1996 between C W Resources, Inc., Operator,
                            42-459-057631-00A   Volume 281, Page 996, Official      And Atlantic Richfield Company, et al,
                                                Records of Upshur County, Texas.    non-operators
                            42-459-057631-00B
                                                LIMITED IN DEPTH FROM THE SURFACE   AR-105498-001
                            42-459-057631-00C   DOWN TO 100' BELOW THE TOTAL        Designation of Gas Unit dated March 13, 1997,
                                                DEPTH DRILLED IN THE C W            by and between C W Resources, Inc. and
                            42-459-057633-00A   RESOURCES WATTS HEIRS GAS UNIT      Atlantic Richfield Company, et al
                                                NO. 1 WELL.
                            42-459-057634-00A                                       AR-105526
                                                                                    Interruptible Gas Transportation Agreement
                            42-459-057634-00B                                       dated March 1, 1997, between C W Resources,
                                                                                    Atlantic Richfield Company, et al, "Sellers"
                            42-459-057634-00C                                       and Delhi Gas Pipeline Corporation,
                                                                                    "Transporter".
</TABLE>



                                 Page 155 of 165

<PAGE>   182


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Glenwood Field              42-459-057634-00D   Barbara Cain                 R. Lacy, Inc.           7-13-94     165      584
(Cotton Valley Sand)
Watts Heirs Gas Unit (d)    42-459-057634-00E   Terry R. Brown               R. Lacy, Inc.           6-17-94     168      121
411578300
(continued)                 42-459-057634-00F   James G. Humphrey            R. Lacy, Inc.           7-1-94      169      503

                            42-459-057634-00G   Kay Barney                   R. Lacy, Inc.           7-1-94      168      119

                            42-459-057634-00H   Dorothy Nell Love Goins      R. Lacy, Inc.           6-30-94     164      927

                            42-459-057635-00A   Doris B. Price               R. Lacy, Inc.           1-20-95     183      12

                            42-459-057635-00B   Penny Price Seiders          R. Lacy, Inc.           1-20-95     186      49

                            42-459-057635-00C   Rena Marie Roberts           R. Lacy, Inc.           7-1-94      164      980

                            42-459-057635-00D   Claude H. Roberts, Jr.       R. Lacy, Inc.           7-1-94      164      948

                            42-459-057635-00E   Walter Roach                 Crown Resources Co.     4-3-97      264      510

                            42-459-057637-00A   Fannie Reeves Kahn Tr.       Amoco Production Co.    6-11-96     229      229

                            42-459-057637-00B   Gloria Taylor Wismar         Amoco Production Co.    3-27-96     222      781

                            42-459-057637-00C   Nancy Taylor Kennedy         Amoco Production Co.    3-27-96     222      713

                            42-459-057637-00D   Charles S. Taylor            Amoco Production Co.    3-27-96     222      757

                            42-459-057637-00E   Mary Lou Ray McCain          R. Lacy, Inc.           8-4-94      168      246

                            42-459-057637-00F   J. D. Tillery, et al         R. Lacy, Inc.           8-4-94      168      258

                            42-459-057637-00G   Mary Rylie Gibson            R. Lacy, Inc.           8-8-94      168      237

                            42-459-057637-00H   B.J. Barclay et al           R. Lacy, Inc.           8-3-94      168      116

                            42-459-057637-00I   Julian William Thrasher,     R. Lacy, Inc.           8-1-94      168      255
                                                Jr., Trustee

                            42-459-057637-00J   James Ray Northcutt          R. Lacy, Inc.           8-4-94      168      249

                            42-459-057637-00K   Leonard Frank Ray Family     R. Lacy, Inc.           8-4-94      174      159
                                                Trust

                            42-459-057637-00L   G. Arthur Donnelly, III      R. Lacy, Inc.           10-20-94    196      208

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057634-00D   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County and Gregg
Watts Heirs Gas Unit (d)    42-459-057634-00E   County, Texas, as more fully
411578300                                       described in that certain
(continued)                 42-459-057634-00F   Assignment dated effective June
                                                22, 1997, from Amoco Production
                            42-459-057634-00G   Company to Atlantic Richfield
                                                Company, et al, recorded at
                            42-459-057634-00H   Volume 281, Page 996, Official
                                                Records of Upshur County, Texas.
                            42-459-057635-00A
                                                LIMITED IN DEPTH FROM THE SURFACE
                            42-459-057635-00B   DOWN TO 100' BELOW THE TOTAL
                                                DEPTH DRILLED IN THE C W
                            42-459-057635-00C   RESOURCES WATTS HEIRS GAS UNIT
                                                NO. 1 WELL.
                            42-459-057635-00D

                            42-459-057635-00E

                            42-459-057637-00A

                            42-459-057637-00B

                            42-459-057637-00C

                            42-459-057637-00D

                            42-459-057637-00E

                            42-459-057637-00F

                            42-459-057637-00G

                            42-459-057637-00H

                            42-459-057637-00I

                            42-459-057637-00J

                            42-459-057637-00K

                            42-459-057637-00L
</TABLE>



                                 Page 156 of 165

<PAGE>   183


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>

Glenwood Field              42-459-057637-00M   Nancy Bruce Curlee            R. Lacy, Inc.           7-26-94     167     573
(Cotton Valley Sand)
Watts Heirs Gas Unit (d)    42-459-057637-00N   Myra Lynn Ray Roberts         R. Lacy, Inc.           8-1-94      172     573
411578300
(continued)                 42-459-057637-00O   Annie Lou Ray Grigsby         R. Lacy, Inc.           8-4-94      168     123

                            42-459-057638-00A   Howard W. Parker et ux        R. Lacy, Inc.           7-18-94     166     387

                            42-459-057638-00B   Jack M. Newman et al          R. Lacy, Inc.           7-13-94     179     409

                            42-459-057639-00A   Lester Shoshone Trust B       R. Lacy, Inc.           7-9-94      164     986

                            42-459-057639-00B   Magalene Fleet Mullican       Crown Resources Co.     1-4-97      247     173

                            42-459-057640-00A   Iva Marie Cameron Fleck       R. Lacy, Inc.           7-13-94     166     372

                            42-459-057640-00B   Joan Anderson                 R. Lacy, Inc.           7-13-94     165     581

                            42-459-057640-00C   Mabel Gilpin                  R. Lacy, Inc.           7-13-94     164     972

                            42-459-057640-00D   Sue Vickery                   R. Lacy, Inc.           7-13-94     165     594

                            42-459-057640-00E   E. L. Riddle, Jr.             R. Lacy, Inc.           7-16-94     165     542

                            42-459-057640-00F   Robert Hearn Williams         R. Lacy, Inc.           7-13-94     165     596

                            42-459-057640-00G   Charles H. Meyer              R. Lacy, Inc.           7-13-94     165     590

                            42-459-057641-00A   Judith M. Wrucke              R. Lacy, Inc.           3-17-95     2845    492

                            42-459-057641-00B   Claude Graves, III            R. Lacy, Inc.           3-29-95     2845    487

                            42-459-057641-00C   Michael Andrew Stieren        R. Lacy, Inc.           8-6-94      171     395

                            42-459-057641-00D   Jennifer L. Stieren           R. Lacy, Inc.           8-6-94      171     398

                            42-459-057641-00E   Georgia Ann Stieren           R. Lacy, Inc.           8-6-94      171     401

                            42-459-057641-00F   Doris K. Ehrenberg            R. Lacy, Inc.           3-17-95     196     212

                            42-459-057641-00G   Gayla S. Graves               R. Lacy, Inc.           3-17-95     196     220

                            42-459-057641-00H   Claude Graves, III            R. Lacy, Inc.           3-17-95     196     216

                            42-459-057642-00A   Josh R. Morriss, III          R. Lacy, Inc.           3-17-95     196     376

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057637-00M   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County and Gregg
Watts Heirs Gas Unit (d)    42-459-057637-00N   County, Texas, as more fully
411578300                                       described in that certain
(continued)                 42-459-057637-00O   Assignment dated effective June
                                                22, 1997, from Amoco Production
                            42-459-057638-00A   Company to Atlantic Richfield
                                                Company, et al, recorded at
                            42-459-057638-00B   Volume 281, Page 996, Official
                                                Records of Upshur County, Texas.
                            42-459-057639-00A
                                                LIMITED IN DEPTH FROM THE SURFACE
                            42-459-057639-00B   DOWN TO 100' BELOW THE TOTAL
                                                DEPTH DRILLED IN THE C W
                            42-459-057640-00A   RESOURCES WATTS HEIRS GAS UNIT
                                                NO. 1 WELL.
                            42-459-057640-00B

                            42-459-057640-00C

                            42-459-057640-00D

                            42-459-057640-00E

                            42-459-057640-00F

                            42-459-057640-00G

                            42-459-057641-00A

                            42-459-057641-00B

                            42-459-057641-00C

                            42-459-057641-00D

                            42-459-057641-00E

                            42-459-057641-00F

                            42-459-057641-00G

                            42-459-057641-00H

                            42-459-057642-00A
</TABLE>


                                 Page 157 of 165

<PAGE>   184


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Glenwood Field              42-459-057642-00B   Lee M. Daniels               R. Lacy, Inc.            7-16-94     167     579
(Cotton Valley Sand)
Watts Heirs Gas Unit (d)    42-459-057642-00C   Don N. Morriss               R. Lacy, Inc.            7-13-94     166     382
411578300
(continued)                 42-459-057642-00D   Martha Leah Morriss          R. Lacy, Inc.            7-13-94     166     380

                            42-459-057642-00E   Carol Elizabeth Dodds        R. Lacy, Inc.            7-19-94     172     560

                            42-459-057642-00F   William A. Ferguson          R. Lacy, Inc.            7-19-94     164     970

                            42-459-057642-00G   Melisa Daniels Butler        R. Lacy, Inc.            7-16-94     167     577

                            42-459-057642-00H   William O. Morriss           R. Lacy, Inc.            7-13-94     166     378

                            42-459-057642-00I   Joan Baldridge Bratton       R. Lacy, Inc.            7-13-94     166     370

                            42-459-057642-00J   Deborah Elyse Redfern        R. Lacy, Inc.            7-19-94     167     581

                            42-459-057642-00K   Jeana T. McClintock          R. Lacy, Inc.            7-19-94     180     442

                            42-459-057643-00A   Susan Graves                 R. Lacy, Inc.            8-4-94      168     126

                            42-459-057643-00B   Linda R. Rodgers             R. Lacy, Inc.            8-4-94      168     146

                            42-459-057643-00C   M. G. Ray                    R. Lacy, Inc.            8-4-94      168     145

                            42-459-057645-00A   Willie Lee Starr et ux       R. Lacy, Inc.            6-15-94     163     417

                            42-459-057645-00B   Johnnie Faye Bowden          R. Lacy, Inc.            6-15-94     163     401

                            42-459-057645-00C   Stephanie More               R. Lacy, Inc.            6-17-94     163     413

                            42-459-057647-00A   The Nabors Trust             R. Lacy, Inc.            7-1-94      164     934

                            42-459-057648-00A   Andrews Royalty, Inc.        Crown Resources Co.      3-5-97      255     821

                            42-459-057708-000   Mrs. E. A. Watts             Elbert Williams          10-8-50     5       260

                            42-459-057709-00A   Lee Tanner Fleet             Crown Resources Co.      6-25-97     267     982

                            42-459-057709-00B   Gerald Hunter Fleet          Crown Resources Co.      6-25-97     267     984

                            42-459-057709-00C   Betty Jean Sheffield         Crown Resources Co.      6-25-97     267     988

                            42-459-057709-00D   Charles Buck Fleet           Crown Resources Co.      6-25-97     267     980

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057642-00B   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County and Gregg
Watts Heirs Gas Unit (d)    42-459-057642-00C   County, Texas, as more fully
411578300                                       described in that certain
(continued)                 42-459-057642-00D   Assignment dated effective June
                                                22, 1997, from Amoco Production
                            42-459-057642-00E   Company to Atlantic Richfield
                                                Company, et al, recorded at
                            42-459-057642-00F   Volume 281, Page 996, Official
                                                Records of Upshur County, Texas.
                            42-459-057642-00G
                                                LIMITED IN DEPTH FROM THE SURFACE
                            42-459-057642-00H   DOWN TO 100' BELOW THE TOTAL
                                                DEPTH DRILLED IN THE C W
                            42-459-057642-00I   RESOURCES WATTS HEIRS GAS UNIT
                                                NO. 1 WELL.
                            42-459-057642-00J

                            42-459-057642-00K

                            42-459-057643-00A

                            42-459-057643-00B

                            42-459-057643-00C

                            42-459-057645-00A

                            42-459-057645-00B

                            42-459-057645-00C

                            42-459-057647-00A

                            42-459-057648-00A

                            42-459-057708-000

                            42-459-057709-00A

                            42-459-057709-00B

                            42-459-057709-00C

                            42-459-057709-00D
</TABLE>


                                 Page 158 of 165

<PAGE>   185


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                          DEED
PROPERTY CODE                                                                                          LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR                LESSEE/GRANTEE           DATE        BOOK      PAGE
- --------------------------- -----------------   --------------------------    ---------------------    -------     ----      ----
<S>                         <C>                 <C>                           <C>                     <C>         <C>       <C>
Glenwood Field              42-459-057710-00A   Joe Miller et ux Wanda        Crown Resources Co.      4-3-97      255       830
(Cotton Valley Sand)
Watts Heirs Gas Unit(d)     42-459-057717-00A   Phillip A. Works et ux        R. Byron Roach, Ttee     6-29-94     169       293
411578300
(continued)                 42-459-057718-00A   Mary Virginia Smith           J. Don Westbrook         7-15-94     175       101

                            42-459-057718-00B   Mary Nell Smith Floyd         J. Don Westbrook         7-14-94     175       56

                            42-459-057718-00C   June Robison                  J. Don Westbrook         7-15-94     175       97

                            42-459-057718-00D   Fayrene Lee                   J. Don Westbrook         7-15-94     175       91

                            42-459-057718-00E   Clarine Smith Tucker          J. Don Westbrook         7-14-94     175       105

                            42-459-057718-00F   Fayrine Smith Green           J. Don Westbrook         7-14-94     175       75

                            42-459-057719-00A   Matt S. McKenzie              R. Byron Roach, Ttee     10-2-94     185       946

                            Unknown             Betty R. LeBaron              Crown Resources Co.      2-18-97     253       942

                            Unknown             Anne Price MacKenzie          R. Byron Roach, Ttee     1-20-95     169       293

                            Unknown             Pursuit Energy Corp.          Crown Resources Co.      5-2-97      261
- --------------------------- -----------------   --------------------------    ---------------------    -------     ----      ----
East Texas Field            Unknown             Unknown                       Unknown
A. L. Jenkins
415553000
D.O. 42-459-031186-000
Operator
Roberts & Murphy, Inc.
Revenue Interest  0.997812

- --------------------------- -----------------   --------------------------    ---------------------    -------     ----      ----
East Texas Field            42-183-057222-00A   Anna Kathryn Rulfs Holbrook   Team Invest, Inc.        1/24/96     224       182
J. H. Sabey Gas Unit
417896300
- -0- WI (Before 400%
Payout)
- -0- NRI
- --------------------------- -----------------   --------------------------    ---------------------    -------     ----      ----
                            42-183-057222-00B   Sharon Rulfs Kerr             Team Invest, Inc.        1/24/96     224       230



- --------------------------- -----------------   --------------------------    ---------------------    -------     ----      ----
                            42-183-057222-00C   L. D. Rulfs, Jr.              Team Invest, Inc.        1/24/96     224       303



- --------------------------- -----------------   --------------------------    ---------------------    -------     ----      ----
                            42-183-057222-00d   Henry E. Pybus                Wagner & Brown, Ltd.     10/18/96    259       195



- --------------------------- -----------------   --------------------------    ---------------------    -------     ----      ----
                            42-183-057223-00A   Thomas C. Merritt, Trustee    Team Invest, Inc.        5/16/96     224       243


<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Glenwood Field              42-459-057710-00A   A tract or tracts of land located
(Cotton Valley Sand)                            in Upshur County and Gregg
Watts Heirs Gas Unit(d)     42-459-057717-00A   County, Texas, as more fully
411578300                                       described in that certain
(continued)                 42-459-057718-00A   Assignment dated effective June
                                                22, 1997, from Amoco Production
                            42-459-057718-00B   Company to Atlantic Richfield
                                                Company, et al, recorded at
                            42-459-057718-00C   Volume 281, Page 996, Official
                                                Records of Upshur County, Texas.
                            42-459-057718-00D
                                                LIMITED IN DEPTH FROM THE SURFACE
                            42-459-057718-00E   DOWN TO 100' BELOW THE TOTAL
                                                DEPTH DRILLED IN THE C W
                            42-459-057718-00F   RESOURCES WATTS HEIRS GAS UNIT
                                                NO. 1 WELL.
                            42-459-057719-00A

                            Unknown

                            Unknown

                            Unknown
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
East Texas Field            Unknown             37.5 acres, more or less, out of
A. L. Jenkins                                   the H. H. Edwards Survey, A-668,
415553000                                       Upshur County, Texas
D.O. 42-459-031186-000
Operator
Roberts & Murphy, Inc.
Revenue Interest  0.997812

- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
East Texas Field            42-183-057222-00A   234.50 acres out of Leino           Subject to 400% Non-Consent JOA Ar-105492 J.
J. H. Sabey Gas Unit                            Gonzales A-169 (Tract 1 Deed        H. Sabey GU.  Subject to 4/24/96 Letter
417896300                                       263/229 DR), Upshur County, Texas   Agreement between Team Invest, Inc. and
- -0- WI (Before 400%                                                                 Wagner & Brown, Ltd.
Payout)
- -0- NRI
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
                            42-183-057222-00B   234.50 acres out of Leino           Subject to 400% Non-Consent JOA Ar-105492 J.
                                                Gonzales A-169 (Tract 1 Deed        H. Sabey GU.  Subject to 4/24/96 Letter
                                                263/229 DR), Upshur County, Texas   Agreement between Team Invest, Inc. and
                                                                                    Wagner & Brown, Ltd.
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
                            42-183-057222-00C   234.50 acres out of Leino           Subject to 400% Non-Consent JOA Ar-105492 J.
                                                Gonzales A-169 (Tract 1 Deed        H. Sabey GU.  Subject to 4/24/96 Letter
                                                263/229 DR), Upshur County, Texas   Agreement between Team Invest, Inc. and
                                                                                    Wagner & Brown, Ltd.
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
                            42-183-057222-00d   234.50 acres out of Leino           Subject to 400% Non-Consent JOA Ar-105492 J.
                                                Gonzales A-169 (Tract 1 Deed        H. Sabey GU.  Subject to 4/24/96 Letter
                                                263/229 DR), Upshur County, Texas   Agreement between Team Invest, Inc. and
                                                                                    Wagner & Brown, Ltd.
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
                            42-183-057223-00A   234.50 acres out of Leino           Subject to 400% Non-Consent JOA Ar-105492 J.
                                                Gonzales A-169 (Tract 1 Deed        H. Sabey GU.  Subject to 4/24/96 Letter
                                                263/229 DR), Upshur County, Texas   Agreement between Team Invest, Inc. and
                                                                                    Wagner & Brown, Ltd.
</TABLE>


                                 Page 159 of 165

<PAGE>   186


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Gladewater Field            42-459-057205-00A   Lawauna Hill, Guardian of     Team Invest, Inc.      7/17/96     233       31
(Cotton Valley)                                 Estate of Marcelle Daffan
Faye Pittman Willeford                          McLeroy
400050100
33.33% WI BPO
25.975504% NRI BPO


                            42-459-057206-00A   James Reagan Somerset Wyche   Team Invest, Inc.      9/3/96      237       209







                            42-459-057206-00B   Elizabeth Ellen Wyche         Team Invest, Inc.      9/3/96      237       207
                                                Robison






                            42-459-057206-00C   Annie Marie Boyd Johnson      Team Invest, Inc.      9/20/96     240       815







                            42-459-057206-00D   Estelline Boyd                Team Invest, Inc.      9/20/96     240       809







                            42-459-057206-00E   James V. Burnett              Team Invest, Inc.      9/20/96     240       811



















<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Gladewater Field            42-459-057205-00A   221.90 acres out of Leino           AR-105492
(Cotton Valley)                                 Gonzales A-169, being 100.0 and     Joint Operating Agreement between C W
Faye Pittman Willeford                          15.3 acres (First and Second        Resources, et al Subject to 4/24/96 Letter
400050100                                       Tracts OGML 128/324 OGR), 84.9      Agreement between Team Invest, Inc. and
33.33% WI BPO                                   acres (OGML 175/608 OGR), and       Wagner & Brown, Ltd.
25.975504% NRI BPO                              21.7 acres (OGML 128/321 OGR)
                                                Upshur County, Texas, being Tract
                                                7&8 of the Faye Willeford Gas Unit

                            42-459-057206-00A   264.90 acres, being 91.0 acres
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 73.6 (Deed
                                                172/240 DR) and 110.3 acres (MC
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2, 3 & 4 of the Faye
                                                Willeford Gas Unit.

                            42-459-057206-00B   264.90 acres, being 91.0 acres
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 73.6 (Deed
                                                172/240 DR) and 110.3 acres (MC
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2, 3 & 4 of the Faye
                                                Willeford Gas Unit.

                            42-459-057206-00C   264.90 acres, being 91.0 acres
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 73.6 (Deed
                                                172/240 DR) and 110.3 acres (MC
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2, 3 & 4 of the Faye
                                                Willeford Gas Unit.

                            42-459-057206-00D   264.90 acres, being 91.0 acres
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 73.6 (Deed
                                                172/240 DR) and 110.3 acres (MC
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2, 3 & 4 of the Faye
                                                Willeford Gas Unit.

                            42-459-057206-00E   264.90 acres, being 91.0 acres
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 73.6 (Deed
                                                172/240 DR) and 110.3 acres (MC
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2, 3 & 4 of the Faye
                                                Willeford Gas Unit.

</TABLE>


                                 Page 160 of 165

<PAGE>   187


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Gladewater Field            42-459-057207-00A   Rose Marie Hurmence          Team Invest, Inc.       9/20/96     240       963
(Cotton Valley)
Faye Pittman Willeford
400050100
33.33% WI BPO
25.975504% NRI BPO

                            42-459-057207-00B   Ann Boyd Monk                Team Invest, Inc.       9/20/96     240       965






                            42-459-057207-00C   Shirley Muenzler             Team Invest, Inc.       9/20/96     240       817






                            42-457-057207-00D   Peggy Pieper, et vir Ben     Team Invest, Inc.       9/20/96     240       819






                            42-457-057207-00E   Linda Cantrell               Team Invest, Inc.       9/20/96     240       813

















<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Gladewater Field            42-459-057207-00A   201.3 acres, being 91.0 acres       AR-105492
(Cotton Valley)                                 (Deed 173/280 DR) out of Wm.        Joint Operating Agreement between C W
Faye Pittman Willeford                          Carlton A-72 and 110.3 acres (MD    Resources, et al Subject to 4/24/96 Letter
400050100                                       233/189 DR) out of Wm. Carlton      Agreement between Team Invest, Inc. and
33.33% WI BPO                                   A-72 and Leino Gonzales A-169,      Wagner & Brown, Ltd
25.975504% NRI BPO                              Upshur County, Texas, being
                                                Tracts 2 & 4 of the Faye
                                                Willeford Gas Unit

                            42-459-057207-00B   201.3 acres, being 91.0 acres
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 110.3 acres (MD
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2 & 4 of the Faye
                                                Willeford Gas Unit

                            42-459-057207-00C   201.3 acres, being 91.0 acres
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 110.3 acres (MD
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2 & 4 of the Faye
                                                Willeford Gas Unit

                            42-457-057207-00D   201.3 acres, being 91.0 acres
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 110.3 acres (MD
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2 & 4 of the Faye
                                                Willeford Gas Unit

                            42-457-057207-00E   201.3 acres, being 91.0 acres
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 110.3 acres (MD
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2 & 4 of the Faye
                                                Willeford Gas Unit
</TABLE>


                                 Page 161 of 165

<PAGE>   188


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Gladewater Field            42-457-057207-00F   Irene Arnold, et vir A. A.   Team Invest, Inc.       9/20/96     240       959
(Cotton Valley)
Faye Pittman Willeford
400050100
33.33% WI BPO
25.975504% NRI BPO

                            42-457-057207-00G   Reba Boyd, AIF for Milton    Team Invest, Inc.       9/20/96     239       657
                                                Boyd





                            42-457-057207-00H   Barbara Barger               Team Invest, Inc.       9/2096      247       120






                            42-457-057207-00I   Mattie F. Boyd               Team Invest, Inc.       9/20/96     247       122






                            42-457-057208-00A   Faye Pittman Wileford        Team Invest, Inc.       5/1/96      225       200













<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Gladewater Field            42-457-057207-00F   201.3 acres, being 91.0 acres       AR-105492
(Cotton Valley)                                 (Deed 173/280 DR) out of Wm.        Joint Operating Agreement between C W
Faye Pittman Willeford                          Carlton A-72 and 110.3 acres (MD    Resources, et al Subject to 4/24/96 Letter
400050100                                       233/189 DR) out of Wm. Carlton      Agreement between Team Invest, Inc. and
33.33% WI BPO                                   A-72 and Leino Gonzales A-169,      Wagner & Brown, Ltd
25.975504% NRI BPO                              Upshur County, Texas, being
                                                Tracts 2 & 4 of the Faye
                                                Willeford Gas Unit

                            42-457-057207-00G   201.3 acres, being 91.0 acres
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 110.3 acres (MD
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2 & 4 of the Faye
                                                Willeford Gas Unit

                            42-457-057207-00H   201.3 acres, being 91.0 acres
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 110.3 acres (MD
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2 & 4 of the Faye
                                                Willeford Gas Unit

                            42-457-057207-00I   201.3 acres, being 91.0 acres
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 110.3 acres (MD
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2 & 4 of the Faye
                                                Willeford Gas Unit

                            42-457-057208-00A   85.3 acres, being 42.3 acres
                                                (Deed 244/207 DR) out of Leino
                                                Gonzales A-169 and W. L. Palmer
                                                A-392, and 40.0 acres (60.0 acres
                                                Deed 265/514 DR LESS 20.0 acres
                                                Unit 168/530 OGR) and 3.0 acres
                                                (Deed 265/514 DR) out of Leino
                                                Gonzales A-169, Upshur County,
                                                Texas, being Tract 9 of the Faye
                                                Willeford Gas Unit
</TABLE>


                                 Page 162 of 165

<PAGE>   189


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>
Gladewater Field            42-459-057370-00A   Texas Baptist Children's     Oxy USA, Inc.           4/17/96     226       444
(Cotton Valley)                                 Home, Round Rock,
Faye Pittman Willeford                          a Texas Corporation
400050100
33.33% WI BPO
25.975504% NRI BPO






                            42-459-057370-00B   The First Baptist Church     Oxy USA, Inc.           3/29/96     226       433
                                                of Gladewater, a
                                                Texas Corporation









                            42-459-057370-00C   East Texas Baptist           Oxy USA, Inc.           5/20/96     234       745
                                                University, a Texas
                                                Corporation









<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>

Gladewater Field            42-459-057370-00A   206.60 acres out of Wm. Carlton     AR-105492
(Cotton Valley)                                 A-72, being lease tracts 2          Joint Operating Agreement between C W
Faye Pittman Willeford                          (52.0), 3 (91.0) and 4 (63.60)      Resources et al
400050100                                       (Deeds 149.468, 173/280 and
33.33% WI BPO                                   172/240 respectively), from         AR-105495
25.975504% NRI BPO                              Surface to 100' below               Farmout from Oxy USA
                                                Stratigraphic Equivalent of
                                                T.D.D. 11,200' as logged in
                                                Willeford No. 1, Upshur County,
                                                Texas, being Tracts 1, 2 & 3 of
                                                the Faye Willeford Gas Unit

                            42-459-057370-00B   206.60 acres out of Wm. Carlton
                                                A-72, being lease tracts 2
                                                (52.0), 3 (91.0) and 4 (63.60)
                                                (Deeds 149.468, 173/280 and
                                                172/240 respectively), from
                                                Surface to 100' below
                                                Stratigraphic Equivalent of
                                                T.D.D. 11,200' as logged in
                                                Willeford No. 1, Upshur County,
                                                Texas, being Tracts 1, 2 & 3 of
                                                the Faye Willeford Gas Unit

                            42-459-057370-00C   206.60 acres out of Wm. Carlton
                                                A-72, being lease tracts 2
                                                (52.0), 3 (91.0) and 4 (63.60)
                                                (Deeds 149.468, 173/280 and
                                                172/240 respectively), from
                                                Surface to 100' below
                                                Stratigraphic Equivalent of
                                                T.D.D. 11,200' as logged in
                                                Willeford No. 1, Upshur County,
                                                Texas, being Tracts 1, 2 & 3 of
                                                the Faye Willeford Gas Unit


</TABLE>


                                 Page 163 of 165

<PAGE>   190


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK      PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----      ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>       <C>
Gladewater Field            42-459-057371-00A   Gloria Nan Serpas, dihsp     Oxy USA, Inc.           4/25/96     231       102
(Cotton Valley)
Faye Pittman Willeford
400050100
33.33% WI BPO
25.975504% NRI BPO



                            42-459-057371-00B   Patsy Jean Taylor, dihsp     Oxy USA, Inc.           4/25/96     2312      99









                            42-459-057372-00A   Ken McGinnis, individually   Oxy USA, Inc.           4/23/96     226       439
                                                and as sole owner of
                                                McGinnis Carpet Center





- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----      ----
                            42-459-057370-00D   Clara Faye Smith, a widow    Crown Resources         5/10/95     195       34
                                                                             Company









                            42-459-057373-00A   William B. Cook, dihsp       Crown Resources         7/1/95      197       657
                                                Thomas N. Cook, dihsp        Company
                                                Robert B. Cook, Jr., dihsp








                            42-459-057374-00A   Kathryn Cook Porter, mwdihsp Crown Resources         7/1/95      197       711
                                                                             Company






<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
Gladewater Field            42-459-057371-00A   110.30 acres out of Wm. Carlton     AR-105492
(Cotton Valley)                                 A-72 and L. Gonzales A-169 (MD      Joint Operating Agreement between C W
Faye Pittman Willeford                          233/189 DR), from Surface to 100'   Resources et al
400050100                                       below Stratigraphic Equivalent of
33.33% WI BPO                                   T.D.D. 11,200' as logged in         AR-105495
25.975504% NRI BPO                              Willeford No. 1, Upshur County,     Farmout from Oxy USA
                                                Texas, being Tract 4 of the Faye
                                                Willeford Gas Unit

                            42-459-057371-00B   110.30 acres out of Wm. Carlton
                                                A-72 and L. Gonzales A-169 (MD
                                                233/189 DR), from Surface to 100'
                                                below Stratigraphic Equivalent of
                                                T.D.D. 11,200' as logged in
                                                Willeford No. 1, Upshur County,
                                                Texas, being Tract 4 of the Faye
                                                Willeford Gas Unit

                                                69.17 acres our of L. Gonzales
                            42-459-057372-00A   A-169 (Deed 361/890 DR), from
                                                Surface to 100' below
                                                Stratigraphic Equivalent of
                                                T.D.D. 11,200' as logged in
                                                Willeford No. 1, Upshur County,
                                                Texas, being Tracts 7&8 of the
                                                Faye Willeford Gas Unit

- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
                            42-459-057370-00D   206.60 acres out of Wm. Carlton     AR-105492
                                                A-72, being lease tracts 1          Joint Operating Agreement between C W
                                                (52.0), 2 (63.60) and 3 (91.0)      Resources et al
                                                (Deeds 149/468, 172/240 and
                                                173/280 respectively, from          AR-105493
                                                Surface to 11,300' (100' below      Farmout from Amoco Production Company
                                                T.D. in Willeford No. 1), Upshur
                                                County, Texas, being Traacts 1, 2
                                                & 3 of the Faye Willeford Gas Unit


                            42-459-057373-00A   222.0 acres, being tracts of 80.0
                                                and 48.0 acres out of Wm. Carlton
                                                A-72 (Tr. 1, 2 Deed 362/548), and
                                                94.0 acres out of Robert Burton
                                                A-41 (Deed 392/889 DR) from
                                                Surface to 11,300' (100' below
                                                T.D. in Willeford No. 1), Upshur
                                                County, Texas, being Tracts 5, 6
                                                & 10 of the Faye Willeford Gas
                                                Unit

                            42-459-057374-00A   94.0 acres, being 94.0 acres out
                                                of Robert Burton A-41 (Deed
                                                392/889 DR) from Surface to
                                                11,300' (100' below T.D. in
                                                Willeford No. 1), Upshur County,
                                                Texas, being Tract 5 of the Faye
                                                Willeford Gas Unit

</TABLE>


                                 Page 164 of 165

<PAGE>   191


<TABLE>
<CAPTION>
FIELD NAME
PROPERTY NAME                                                                                        DEED
PROPERTY CODE                                                                                        LEASE
ARCO'S INTEREST             ARCO LEASE NO.      LESSOR/GRANTOR               LESSEE/GRANTEE          DATE        BOOK    PAGE
- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
<S>                         <C>                 <C>                          <C>                     <C>         <C>     <C>

                            42-459-057375-000   Geneva Stevens, a widow       A. E. Waghalter        4/5/72      129       509






- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
                            42-459-057786-00A   Barbara Simpson Cooper        Wagner & Brown, Ltd.   9/4/96      262       605





                            42-459-057787-00A   W. P. Hamilton                Wagner & Brown, Ltd.   3/10/97     262       601







                            42-459-057787-00B   The Elbert Dennis Bowles,     Wagner & Brown, Ltd.   3/12/97     262       603
                                                Jr. Family Trust




                            42-459-057787-00C   Harold W. Smith
                                                                              Wagner & Brown, Ltd.   8/25/97






- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
                            42-459-057786-00B   Mary Margaret Carloss         Team Invest, Inc.      8/18/97     275       71




                            42-459-057206-00F   Rose Mings Knight             Team Invest, Inc.      8/25/97     275       83








- --------------------------- -----------------   --------------------------   ---------------------   ---------   ----    ----
East Texas Field
A. L. Jenkins (Small RI)
41555300
 .7812% NRI

<CAPTION>

FIELD NAME
PROPERTY NAME
PROPERTY CODE
ARCO'S INTEREST             ARCO LEASE NO.      DESCRIPTION OF LANDS                SUBJECT TO:
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
<S>                         <C>                 <C>                                 <C>
                            42-459-057375-000   24.10 acres out of 119.90 acre      AR-105492
                                                lease Tr. 4, L. Gonzales A-169      Joint Operating Agreement between C W
                                                (Deed 233/404 DR) from Surface to   Resources et al
                                                11,300' (100' below T.D. in
                                                Willeford No. 1), Upshur County,    AR-105494
                                                Texas, being Tract 11 of the Faye   Farmout from Exxon
                                                Willeford Gas Unit
- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
                            42-459-057786-00A   52.0 acres out of Wm. Carlton       AR-105492
                                                A-72 (Deed 149/468 DR), Upshur      Joint Operating Agreement between C W
                                                County, Texas, being Tract 1 of     Resources et al
                                                the Faye Willeford Gas Unit


                            42-459-057787-00A   1514.60 acres, being tracts of
                                                91.0 and 63.60 acres out of Wm.
                                                Carlton A-72 (Dees 173/280 and
                                                172/240 DR respectively), Upshur
                                                County, Texas, being Tracts 2 & 3
                                                of the Faye Willeford Gas Unit


                            42-459-057787-00B   1514.60 acres, being tracts of
                                                91.0 and 63.60 acres out of Wm.
                                                Carlton A-72 (Dees 173/280 and
                                                172/240 DR respectively), Upshur
                                                County, Texas, being Tracts 2 & 3
                                                of the Faye Willeford Gas Unit

                            42-459-057787-00C   1514.60 acres, being tracts of
                                                91.0 and 63.60 acres out of Wm.
                                                Carlton A-72 (Dees 173/280 and
                                                172/240 DR respectively), Upshur
                                                County, Texas, being Tracts 2 & 3
                                                of the Faye Willeford Gas Unit

- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
                            42-459-057786-00B   52.0 acres out of Wm. Carlton       AR-105492
                                                A-72 Deed 149/468 DR), Upshur       Joint Operating Agreement between C W
                                                County, Texas, being Tract 1 of     Resources et al
                                                the Faye Willeford Gas Unit
                                                                                    4/24/96 Letter Agreement between Team Invest,
                            42-459-057206-00F   264.90 acres, being 91.0 acres      Inc. and Wagner & Brown, Ltd.
                                                (Deed 173/280 DR) out of Wm.
                                                Carlton A-72 and 73.6 (Deed
                                                173/280 DR) and 110.3 aces (MD
                                                233/189 DR) out of Wm. Carlton
                                                A-72 and Leino Gonzales A-169,
                                                Upshur County, Texas, being
                                                Tracts 2, 3 & 4 of the Faye
                                                Willeford Gas Unit

- --------------------------- ------------------  ----------------------------------- ----------------------------------------------
East Texas Field                                37.5 acres out of H. H. Edwards
A. L. Jenkins (Small RI)                        Survey, Upshur County, Texas
41555300
 .7812% NRI


</TABLE>


                                Page 165 of 165
<PAGE>   192
                                    EXHIBIT B

                   Attached to and made a part of that certain
           Purchase & Sale Agreement effective as of October 1, 1999,
              By and between Atlantic Richfield Company (ARCO) and
                    Future Acquisition 1995, Ltd. (Purchaser)

                                 EXCLUDED ASSETS

1.   Lien Under South Kilgore Unit Operating Agreement as more particularly
     described in Affidavit of Lien Under Operating Agreement dated July 16,
     1998, recorded in V 2084, P 0188-0206, Rusk County, Texas, INSOFAR AND ONLY
     INSOFAR as said lien secures unpaid amounts attributable to the period
     prior to the Effective Date.

2.   All records, files and maps subject to rights of the East Texas Engineering
     Association (ETEA) unless, or until, proof of Purchaser's membership in the
     ETEA is provided to ARCO

3.   24.4 acres tract of land in Gregg County, Texas, more commonly referred to
     as production office tract located at 1907 East Old Highway 80, White Oak,
     TX 75693, subject to the Surface Lease Agreement attached to the Purchase
     and Sale Agreement as Exhibit 10.2(l).

4.   Stock certificates for and ownership in the East Texas Salt Water Disposal
     Company

5.   Certain geological and all geophysical data, licenses, rights and
     intellectual property held or managed by ARCO in, but not limited to,
     Gregg, Upshur, Smith, Rusk and Cherokee Counties, Texas.







<PAGE>   193



                                   EXHIBIT 2.2

                   Attached to and made a part of that certain
           Purchase & Sale Agreement effective as of October 1, 1999,
              By and between Atlantic Richfield Company (ARCO) and
                    Future Acquisition 1995, Ltd. (Purchaser)

                            GAS PRODUCTION IMBALANCES

<TABLE>
<CAPTION>
  PROPERTY NAME              10/1/99 IMBALANCE IN MCF              VALUE/MCF
  -------------              ------------------------              ---------
<S>                        <C>                                   <C>
  Lathrop GU #6                      (151)                           $1.75
</TABLE>





<PAGE>   194



                                   EXHIBIT 3.4

                   Attached to and made a part of that certain
           Purchase & Sale Agreement effective as of October 1, 1999,
              By and between Atlantic Richfield Company (ARCO) and
                    Future Acquisition 1995, Ltd. (Purchaser)


                               TITLE DEFECT NOTICE

                                   AR-_______
                                  submitted by
                          FUTURE ACQUISITION 1995, LTD.

Claim No.                                 Date Issued to ARCO:
         ------------------------                             -----------------
                                       ***

State:                                       County:
      ----------------------------                   ---------------

Property Name:                             ARCO Property Code:
               -------------------------                      -----------------

ARCO Lease/Contract/DOI Numbers:


A.       BRIEF DESCRIPTION OF MATTER CONSTITUTING THE CLAIMED TITLE DEFECT:
                                     BPO                       APO
                             WI              NRI         WI           NRI
              P&SA
              Exhibit A:
                            --------       --------    --------     ---------

              Research
              Results:
                            --------       --------    --------     ---------


- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

B.       CLAIMED PURCHASE PRICE REDUCTION ATTRIBUTABLE TO THE CLAIMED TITLE
         DEFECT:

              Allocated Purchase Price:                   $
                                                           ------------------
              Claimed Adjustment:                         $
                                                           ------------------
              Adjusted Allocated Purchase Price:          $
                                                           ------------------

C.       ARCO RESPONSE/APPROVAL:

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

                                       ***

Verified by:                                            Date:
                  --------------------------                 -----------------
                  (ARCO Landman)
Reviewed by:                                            Date:
                  --------------------------                 -----------------
                  (ARCO Attorney)
Approved by:                                            Date:
                  --------------------------                 -----------------
                  (C&EA Manager)


xc:      Darren Groce, ARCO Legal Department, Midland



<PAGE>   195




                                   EXHIBIT 3.6

 Attached to and made a part of that certain Purchase & Sale Agreement effective
    as of October 1, 1999, by and between Atlantic Richfield Company (ARCO)
                 and Future Acquisition 1995, Ltd. (Purchaser)

                               ALLOCATION OF VALUE
<TABLE>
<CAPTION>
============================================================================================================
          ASSET NAME/DESCRIPTION                                                      TOTAL VALUE
          ----------------------                                                      -----------
<S>                                                                                  <C>
Sun Buy/Sell Crude Oil Contract                                                          $305,000.00
- ------------------------------------------------------------------------------------------------------------
Office / Warehouse / Furnishings / Computers                                               $5,000.00
- ------------------------------------------------------------------------------------------------------------
Warehouse Inventory                                                                       $30,000.00
- ------------------------------------------------------------------------------------------------------------
Cars / Trucks                                                                             $15,000.00
- ------------------------------------------------------------------------------------------------------------
</TABLE>


<TABLE>
<CAPTION>
               PROPERTY NAME                 ARCO PROPERTY CODE        COUNTY             TOTAL VALUE    PRP
               -------------                 ------------------        ------             -----------    ---
<S>                                          <C>                      <C>                <C>            <C>
A. TOOKE GAS UNIT  WELL #1 (ORRI)                 411005600            GREGG             $ 45,000.00
- ------------------------------------------------------------------------------------------------------------
A. L. BACLE GAS UNIT  WELL #1   (ORRI)            416326501            GREGG             $  4,500.00
- ------------------------------------------------------------------------------------------------------------
A. V. BACLE (RI)                                  415656100            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
ADAMS                                             412025600            GREGG             $  2,300.00
- ------------------------------------------------------------------------------------------------------------
AKIN, J. W. "B"                                   412051500            GREGG             $165,000.00
- ------------------------------------------------------------------------------------------------------------
AKIN, J. W. "A"                                   412050700            GREGG             $ 46,000.00
- ------------------------------------------------------------------------------------------------------------
AKIN, J. W. "A"  (RI)                             412053100            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
AKIN, J. W. GAS UNIT #1  (0RRI)                   414142300            GREGG             $ 27,000.00
- ------------------------------------------------------------------------------------------------------------
ANDERSON, W. M. (ORRI)                            410005100            GREGG             $ 13,000.00
- ------------------------------------------------------------------------------------------------------------
ANDERSON (ORYX)                                   412095701            GREGG             $  5,000.00     Y
- ------------------------------------------------------------------------------------------------------------
ANDREWS, S. G.                                    412110400            GREGG             $  2,300.00
- ------------------------------------------------------------------------------------------------------------
ANNIE FENTON UNIT #1  WELL (ORRI)                 437025200            GREGG             $  6,500.00
- ------------------------------------------------------------------------------------------------------------
ARCO TOOKE (ORRI)                                 410552400            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
BANDER                                            412205400            GREGG             $200,000.00     Y
- ------------------------------------------------------------------------------------------------------------
BARNES, JETTIE  A45(616,650318)  (RI)             410427700            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
BARNSWELL B & C (ORYX)                            412220801            GREGG             $  5,000.00     Y
- ------------------------------------------------------------------------------------------------------------
BRAWLEY, W. L. (776)  (RI)                        410462500            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
BURNSIDE "A"                                      412640800            GREGG             $  2,300.00
- ------------------------------------------------------------------------------------------------------------
CALDWELL, DALLAS (R)                              415348100            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
CARR S "A" (RI)                                   413269600            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
CARR, S "B" (RI)                                  418573100            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
F. C. CHRISTIAN (RI)                              415345600            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
CHRISTIAN, JM GAS UNIT   (RI)                     400060900            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
CLEMENS #3 (RI)                                   414145800            GREGG             $ 11,700.00
- ------------------------------------------------------------------------------------------------------------
CLEMENS GAS UNIT #1 (RI)                          435321800            GREGG             $  8,600.00
- ------------------------------------------------------------------------------------------------------------
CLEMENS, E.W. (RI)                                412816800            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
COBB, WM.   (A-356,950) (RI)                      410503600            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
COBB, WM.  (9232,875) (RI)                        410500100            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
COLE (659992, ETC) (RI)                           410506100            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
COLE, M. T. (RI)                                  417163200            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
DAVIS GAS UNIT "E"   #2 & #3  (ORRI)              413452400            GREGG             $ 25,000.00     Y
- ------------------------------------------------------------------------------------------------------------
DUNCAN                                            413275100            GREGG             $  2,300.00
- ------------------------------------------------------------------------------------------------------------
ELDER OIL UNIT "3" (RI)                           416021500            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------

                                       1

</TABLE>

<PAGE>   196
<TABLE>
<CAPTION>
               PROPERTY NAME                 ARCO PROPERTY CODE        COUNTY             TOTAL VALUE    PRP
               -------------                 ------------------        ------             -----------    ---
<S>                                          <C>                      <C>              <C>              <C>
ELDER OIL UNIT, FRANK &  JS (ORRI & RI)           416024000            GREGG           $    1,200.00
- ------------------------------------------------------------------------------------------------------------
FENTON NO. 1 (ORRI)                               435322600            GREGG           $    1,200.00
- ------------------------------------------------------------------------------------------------------------
FISHBURN                                          413495800            GREGG           $    1,200.00
- ------------------------------------------------------------------------------------------------------------
FISHBURN #1 GAS UNIT (ORRI)                       415689700            GREGG           $    1,200.00
- ------------------------------------------------------------------------------------------------------------
FISHER                                            413500800            GREGG           $1,000,000.00
- ------------------------------------------------------------------------------------------------------------
FISHER, CADDIE (RI)                               415322700            GREGG           $   12,000.00
- ------------------------------------------------------------------------------------------------------------
FLEMISTER (RI)                                    413521100            GREGG           $    1,200.00
- ------------------------------------------------------------------------------------------------------------
FOSTER "A"                                        413555500            GREGG           $    1,200.00
- ------------------------------------------------------------------------------------------------------------
FOSTER "B"                                        413560100            GREGG           $   15,000.00
- ------------------------------------------------------------------------------------------------------------
G. B. TENNERY                                     419501900            GREGG           $    2,300.00
- ------------------------------------------------------------------------------------------------------------
G. W. RICHEY GAS UNIT   #2 (RI)                   410689000            GREGG           $    1,200.00
- ------------------------------------------------------------------------------------------------------------
G. W. RICHEY 1-H (RI)                             412525800            GREGG           $    1,200.00
- ------------------------------------------------------------------------------------------------------------
HALE, H. P. (ORRI)                                416025800            GREGG           $    1,200.00
- ------------------------------------------------------------------------------------------------------------
HARRIS (CONOCO)   37.5%                           419499301            GREGG           $  745,000.00
- ------------------------------------------------------------------------------------------------------------
HARRIS (CONOCO) 62.5%                             419499300            GREGG          Included in above
- ------------------------------------------------------------------------------------------------------------
HARRIS, T. B.                                     414010900            GREGG           $1,250,000.00
- ------------------------------------------------------------------------------------------------------------
HAYS A & B                                        414060500            GREGG           $   50,000.00     Y
- ------------------------------------------------------------------------------------------------------------
HOPKINS                                           414245400            GREGG           $    2,300.00
- ------------------------------------------------------------------------------------------------------------
HOUSTON STEPHENS UNIT #1-X (ORRI)                 437450900            GREGG           $    1,200.00
- ------------------------------------------------------------------------------------------------------------
HUGHEY "A" (WELL #5)                              414275600            GREGG           $    5,000.00     Y
- ------------------------------------------------------------------------------------------------------------
HUGHEY "A" (Except #5)                            414270500            GREGG           $    4,600.00
- ------------------------------------------------------------------------------------------------------------
HUGHEY "B" & "C"                                  414280200            GREGG           $    2,300.00
- ------------------------------------------------------------------------------------------------------------
J D DAVIS - E- GAS UNIT #5 (ORRI)                 410325401            GREGG           $    2,300.00
- ------------------------------------------------------------------------------------------------------------
J D DAVIS-E-GAS UNIT #4 (ORRI)                    410325400            GREGG           $    2,300.00
- ------------------------------------------------------------------------------------------------------------
J. R. WILLIAMS GAS   UNIT #1                      415698600            GREGG           $   11,700.00
- ------------------------------------------------------------------------------------------------------------
JOHNSON, DORA                                     414415500            GREGG           $    2,300.00
- ------------------------------------------------------------------------------------------------------------
JONES, ALF (187446, 846)   (RI)                   410702100            GREGG           $    2,300.00
- ------------------------------------------------------------------------------------------------------------
JONES, CLEM (465905)   (RI)                       410703900            GREGG           $    2,300.00
- ------------------------------------------------------------------------------------------------------------
KING, A. A. "A"                                   414536400            GREGG           $   14,500.00
- ------------------------------------------------------------------------------------------------------------
KING, A. A. "B"                                   414537200            GREGG           $   11,600.00
- ------------------------------------------------------------------------------------------------------------
KING, A. A. "C"                                   414539900            GREGG           $    4,600.00
- ------------------------------------------------------------------------------------------------------------
KING, A. A. "D"                                   414538100            GREGG           $    4,600.00
- ------------------------------------------------------------------------------------------------------------
LATHROP GAS UNIT                                  417898000            GREGG           $   19,000.00
- ------------------------------------------------------------------------------------------------------------
LAWSON, MARY                                      414700600            GREGG           $    2,300.00
- ------------------------------------------------------------------------------------------------------------
LEE, T. W.                                        414745600            GREGG           $   39,900.00
- ------------------------------------------------------------------------------------------------------------
M. LEMAIRE (RI)                                   418989200            GREGG           $    2,300.00
- ------------------------------------------------------------------------------------------------------------
MATTIE MONCRIEF+A100  (ORRI)                      411129000            GREGG           $   65,000.00
- ------------------------------------------------------------------------------------------------------------
MC GEORGE                                         415095300            GREGG           $    2,300.00
- ------------------------------------------------------------------------------------------------------------
M. C. SALTER GAS    UNIT   (RI)                   417654500            GREGG           $   12,700.00
- ------------------------------------------------------------------------------------------------------------
MONCRIEF, MATTIE                                  415270100            GREGG           $   73,000.00
- ------------------------------------------------------------------------------------------------------------
ORR, J W GAS UNIT #1  (RI)                        414143100            GREGG           $    2,300.00
- ------------------------------------------------------------------------------------------------------------
</TABLE>

                                       2

<PAGE>   197

<TABLE>
<CAPTION>
               PROPERTY NAME                 ARCO PROPERTY CODE        COUNTY             TOTAL VALUE    PRP
               -------------                 ------------------        ------             -----------    ---
<S>                                          <C>                      <C>                <C>            <C>
P C CASTLEBERRY GAS UNIT   (ORRI)                 414681600            GREGG             $  9,100.00
- ------------------------------------------------------------------------------------------------------------
PENN                                              415610200            GREGG             $ 54,000.00
- ------------------------------------------------------------------------------------------------------------
PERSONS, J. C. #1A  (ORRI)                        437451701            GREGG             $  2,300.00
- ------------------------------------------------------------------------------------------------------------
PET HOPKINS GAS UNIT  (RI) & (ORRI)               437459203            GREGG             $  4,600.00
- ------------------------------------------------------------------------------------------------------------
R. CHRISTIAN  (RI)                                412225900            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
RICHEY, G. W. (4007262, 263 & 264)  (RI)          410863900            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
RICHEY, G. W. (468402)  (RI)                      410862100            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
RODDEN                                            415890300            GREGG             $ 14,600.00
- ------------------------------------------------------------------------------------------------------------
SHILOH SCHOOL GAS UNIT  #1  (ORRI)                411006400            GREGG             $  4,800.00
- ------------------------------------------------------------------------------------------------------------
SMITH, S. G.                                      416245500            GREGG             $183,200.00
- ------------------------------------------------------------------------------------------------------------
STILL, C. L.  (ORRI)                              416017700            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
STUCKY THRASHER GAS UNIT  (ORRI)                  412345000            GREGG             $ 22,000.00
- ------------------------------------------------------------------------------------------------------------
T. B. HARRIS GAS UNIT #2   (RI & ORRI)            437459200            GREGG             $ 18,000.00
- ------------------------------------------------------------------------------------------------------------
T. B. HARRIS GAS UNIT #3  (RI & ORRI)             437459201            GREGG             $ 12,200.00
- ------------------------------------------------------------------------------------------------------------
T. B. HARRIS GAS UNIT #5  (RI & ORRI)             437459202            GREGG             $ 12,700.00
- ------------------------------------------------------------------------------------------------------------
T. W. LEE GAS UNIT                                415131300            GREGG             $ 26,000.00
- ------------------------------------------------------------------------------------------------------------
TOOKE A     (RI)                                  413013800            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
TOOKE B   (RI)                                    413014600            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
TOOKE "B"                                         416530600            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
TURNER                                            416570500            GREGG             $150,000.00     Y
- ------------------------------------------------------------------------------------------------------------
TUTTLE "B"                                        416580200            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
TUTTLE "C"                                        416585300            GREGG             $ 26,000.00
- ------------------------------------------------------------------------------------------------------------
WHATLEY                                           416815100            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
WHEELER   (RI)                                    415346400            GREGG             $  8,600.00
- ------------------------------------------------------------------------------------------------------------
WHEELER (419112,403) (RI)                         410976700            GREGG             $  8,600.00
- ------------------------------------------------------------------------------------------------------------
WHEELER "A"+A129  (10880, 419100)  (RI)           410977500            GREGG             $  8,600.00
- ------------------------------------------------------------------------------------------------------------
WILLIAMS, JOHN R.                                 416830500            GREGG             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
WILSON                                            416855100            GREGG             $ 37,200.00
- ------------------------------------------------------------------------------------------------------------
WILSON, J. W.   (ORRI)                            410006900            GREGG             $ 22,900.00
- ------------------------------------------------------------------------------------------------------------
J. T. JETER ESTATE GAS UNIT WELL #1 (RI)          413101100        GREGG/ UPSHUR         $ 16,000.00
- ------------------------------------------------------------------------------------------------------------
BEALL, J. R. (RI)                                 410433100             RUSK             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
BEAN, MARY B.                                     412270400             RUSK             $150,000.00
- ------------------------------------------------------------------------------------------------------------
BEAN, NAT "A" & "B" (RI)                          417060100             RUSK             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
CHRISTIAN "C"                                     410495100             RUSK             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
DE GUERIN, M. C. (RI)                             417260400             RUSK             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
DE GUERIN, M. C. (22) (RI)                        410533800             RUSK             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
GILES "C" WELL #1-C (ORRI)                        41081161C             RUSK             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
JERNIGAN, W. M. (26-432);  5704) (RI)             410684900             RUSK             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
KENNEDY, MAJOR "B"                                414492900             RUSK             $ 51,000.00
- ------------------------------------------------------------------------------------------------------------
MASON #1 GAS UNIT (RI)                            415029500             RUSK             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
MASON HEIRS #1  A145 (RI)                         415031700             RUSK             $  1,200.00
- ------------------------------------------------------------------------------------------------------------
</TABLE>

                                       3

<PAGE>   198
<TABLE>
<CAPTION>
               PROPERTY NAME                 ARCO PROPERTY CODE        COUNTY             TOTAL VALUE    PRP
               -------------                 ------------------        ------             -----------    ---
<S>                                          <C>                      <C>             <C>               <C>
MASON, J. F. (21)  (RI)                           410762400             RUSK          $     1,200.00
- ------------------------------------------------------------------------------------------------------------
MASON, R. G. (16)+A150  (RI)                      410763200             RUSK          $     1,200.00
- ------------------------------------------------------------------------------------------------------------
MASON, T. O. (466902)  (RI)                       410761600             RUSK          $     1,200.00
- ------------------------------------------------------------------------------------------------------------
PERKINS, A. K. (467904)  (RI)                     410834500             RUSK          $     1,200.00
- ------------------------------------------------------------------------------------------------------------
PRICE, J. M. (ORRI)                               415719200             RUSK          $     1,200.00
- ------------------------------------------------------------------------------------------------------------
RUFUS JONES "A"                                   415959400             RUSK          $     2,300.00
- ------------------------------------------------------------------------------------------------------------
SCHUYLER (188215 & 615)  (RI)                     410890600             RUSK          $     1,200.00
- ------------------------------------------------------------------------------------------------------------
SCHUYLER "A"    (26-768,5101)  (RI)               410891400             RUSK          $     1,200.00
- ------------------------------------------------------------------------------------------------------------
SCHUYLER "B"  (26-769-4970)  (RI)                 410892200             RUSK          $     1,200.00
- ------------------------------------------------------------------------------------------------------------
SOUTH KILGORE UNIT                                417539500             RUSK          $10,500,500.00     Y
- ------------------------------------------------------------------------------------------------------------
STRICKLAND - B                                    417880700             RUSK          $     1,200.00
- ------------------------------------------------------------------------------------------------------------
WATSON, J. R.  (ORRI)                             416023100             RUSK          $     7,500.00     Y
- ------------------------------------------------------------------------------------------------------------
WM. BRITTAIN                                      412323900             RUSK          $   188,900.00
- ------------------------------------------------------------------------------------------------------------
A. L. JENKINS (RI)                                415553000            UPSHUR         $     1,200.00
- ------------------------------------------------------------------------------------------------------------
J H SABEY GAS UNIT                                417896300            UPSHUR         $     1,100.00
- ------------------------------------------------------------------------------------------------------------
PETTY GAS UNIT                                    415000700            UPSHUR         $     8,100.00
- ------------------------------------------------------------------------------------------------------------
RUBEY ESTATE GAS UNIT                             416000200            UPSHUR         $    33,300.00
- ------------------------------------------------------------------------------------------------------------
WATTS HEIRS GAS UNIT                              411578300            UPSHUR         $     2,300.00
- ------------------------------------------------------------------------------------------------------------
E. A. WATTS  (8985)  (RI)                         410968600            UPSHUR         $     2,300.00
- ------------------------------------------------------------------------------------------------------------
WEBB #1  (RI)                                     413546600            UPSHUR         $    16,000.00
- ------------------------------------------------------------------------------------------------------------
E. F. JOHNSON GAS UNIT                            411001300        UPSHUR/ GREGG      $     2,300.00
- ------------------------------------------------------------------------------------------------------------
ROSE KIRKPATRICK  GAS UNIT                        410900700        UPSHUR/ GREGG      $     2,300.00
- ------------------------------------------------------------------------------------------------------------
D A PORTER GAS UNIT (ORRI)                        410345900         UPSHUR/GREGG      $    25,500.00
- ------------------------------------------------------------------------------------------------------------
G. W. RICHEY AND  ENERGY CO.  (RI)                412689100            GREGG          $     2,300.00
- ------------------------------------------------------------------------------------------------------------
ARTERBERRY HEIRS UT.                              413000600            SMITH          $     2,300.00
- ------------------------------------------------------------------------------------------------------------
FAYE PITTMAN WILLEFORD                            400050100            UPSHUR         $     2,300.00
- ------------------------------------------------------------------------------------------------------------
                   TOTAL                                                              $16,000,000.00
============================================================================================================
</TABLE>







                                       4

<PAGE>   199



                                   EXHIBIT 4.7

                   Attached to and made a part of that certain
           Purchase & Sale Agreement effective as of October 1, 1999,
              By and between Atlantic Richfield Company (ARCO) and
                    Future Acquisition 1995, Ltd. (Purchaser)

                          MATERIAL CHANGES IN LAST YEAR



                                      None



<PAGE>   200



                                   EXHIBIT 4.9

                   Attached to and made a part of that certain
           Purchase & Sale Agreement effective as of October 1, 1999,
              By and between Atlantic Richfield Company (ARCO) and
                    Future Acquisition 1995, Ltd. (Purchaser)

                                MATERIAL DEFECTS



                                      None



<PAGE>   201




                                  EXHIBIT 4.16

                   Attached to and made a part of that certain
           Purchase & Sale Agreement effective as of October 1, 1999,
              By and between Atlantic Richfield Company (ARCO) and
                    Future Acquisition 1995, Ltd. (Purchaser)


              PENDING AND PROPOSED OPERATIONS AND CAPITAL PROJECTS



                                      None






<PAGE>   202



                                   EXHIBIT 9.6

                   Attached to and made a part of that certain
           Purchase & Sale Agreement effective as of October 1, 1999,
              By and between Atlantic Richfield Company (ARCO) and
                    Future Acquisition 1995, Ltd. (Purchaser)


                                   LITIGATION


1.  Madera v. Atlantic Richfield Company
    Civil Action No. 396CV2951-R
    United States District Court for the Northern Jurisdiction of Texas
    Dallas Division

2.  Stanley G. Marshall, Jr., et al v. ARCO Oil & Gas Company, a division of
                                       Atlantic Richfield Company
    Civil Action No. 3217
    District Court of 49th Judicial District, Zapata County, Texas
    Modified Judgement
    Abstract of Judgment filed in various courthouses around the State,
    including Rusk County, Texas.
    Supersedeas Bond obtained by ARCO Oil & Gas Company, approved and filed by
    the Zapata County District Clerk on July 2nd, 1998

3.  Harris, et al v.  East Texas Salt Water Disposal Company, et al
    Cause No. 96-04
    District Court of 4th Judicial District, Rusk County, Texas





<PAGE>   203



                                 EXHIBIT 10.2(a)

                   Attached to and made a part of that certain
           Purchase & Sale Agreement effective as of October 1, 1999,
              By and between Atlantic Richfield Company (ARCO) and
                    Future Acquisition 1995, Ltd. (Purchaser)

                 FORM OF CONVEYANCE, ASSIGNMENT AND BILL OF SALE

           Recording Requested by and                    STATE:
                 When Recorded Return to:                      ----------------
                                                        COUNTY:
- -----------------------------------                            ----------------

- -----------------------------------

- -----------------------------------

                     CONVEYANCE, ASSIGNMENT AND BILL OF SALE

         This Conveyance, Assignment and Bill of Sale ("Assignment"), dated
effective as of 7:00 a.m. Central Standard Time, on October 1, 1999 (the
"Effective Time"), is from Atlantic Richfield Company, a Delaware corporation
("Assignor"), whose address is 600 North Marienfeld, Midland, Texas 79701, to
Future Acquisition 1995, Ltd., a Texas Limited Partnership, ("Assignee"), whose
address is 700 Louisiana, Suite 3700, Houston, TX 77002.

                                     PART I
                          GRANTING AND HABENDUM CLAUSES

         For ten dollars ($10.00) and other good and valuable consideration, the
receipt and sufficiency of which Assignor hereby acknowledges, Assignor has
transferred, bargained, conveyed, and assigned, and does hereby transfer,
bargain, convey, and assign to Assignee, effective for all purposes as of the
Effective Time, all of the right, title and interest of Assignor in and to the
following properties and assets (such properties and assets being hereinafter
called the "Assets"):

     (a) The oil, gas and mineral leasehold estates and other real property and
     mineral interests described in Exhibit A, together with all of ARCO's
     rights in respect of any pooled, communitized or unitized acreage of which
     any such interest is a part (collectively, the "Leasehold Interests");

     (b) To the extent same are specifically attributable or allocable to the
     Leasehold Interests, (i) all wells, equipment and facilities that, as of
     the Closing Date, are located on and used solely and directly in connection
     with the production or treatment of oil and gas from the Leasehold
     Interests, (ii) all oil and gas and other hydrocarbon volumes produced on
     or after the Effective Date, (iii) to the extent same are assignable or
     transferable by ARCO without restriction under applicable law or
     third-party agreements (without the payment of any funds or other
     consideration), all orders, contracts, agreements and other instruments
     (excluding any instruments subject or relating to attorney/client
     privilege), (iv) to the extent same are assignable or transferable by ARCO
     under applicable law or third-party agreements (without the payment of any
     funds or other consideration), all easements, authorizations, permits and
     similar rights and interests, and (v) all other rights, privileges,
     benefits, powers and obligations conferred or imposed upon the owner and
     holder of the Leasehold Interests;

     (c) Any and all mineral fee interests, mineral servitudes, royalty
     interests, overriding royalty interests, net profits interests, production
     payments and all other interests of every kind and character in and to the
     properties and lands described on Exhibit A and/or which relate to the
     Leasehold Interests, the lands covered thereby or the production of
     hydrocarbons therefrom;

     (d) All office buildings, warehouses, other buildings and permanent
     improvements, surface leases, vehicles, trucks, warehouse inventory, parts,
     supplies, office furniture, fixtures and equipment, computers, printers,
     telephone systems and all other tangible assets used or held for use in
     connection with ARCO's ownership or operation of the Leasehold Interests
     and other Assets;

     (e) That certain Crude Oil Buy/Sell Contract made and entered into
     effective December 1, 1995, by and between ARCO Permian, a unit of Atlantic
     Richfield Company, and Sun Company, Inc. (R&M), as amended from time to
     time, insofar as applicable to the Leasehold Interests;

     (f) All casing leak allowable transfers, earned salt water allowables, key
     well allowable transfers and similar rights and interests related to or
     arising out of the Leasehold Interests and the production of and rights to
     produce hydrocarbons therefrom; and

     (g) To the extent same are specifically attributable or allocable to the
     Leasehold Interests, originals, to the extent available, or copies of the
     following records: (i) lease and land records, (ii) development geological
     records, (ii) operations, production and engineering records, and (iii)
     facility and well records, in each case excluding any exploration
     geological records, any interpretive or forecast data, any records subject
     or relating to attorney/client privilege and any such records or data that
     are not assignable pursuant to the terms of applicable law or third-party
     agreements (without the payment of any funds or other consideration)
     (collectively, the "Records").
<PAGE>   204

         SAVE AND EXCEPT the assets and properties described in Exhibit B and
any other assets and properties excluded pursuant to the terms hereof, and all
other property, real, personal or intellectual, not expressly covered herein in
Section 1.1 (the "Excluded Assets").

         TO HAVE AND TO HOLD, subject to the terms, exceptions and other
provisions herein stated, the Assets unto Assignee, its successors and assigns,
forever.

                                     PART II
                                  MISCELLANEOUS

         2.1 DISCLAIMER OF WARRANTY; SUBROGATION. The assignments and
conveyances made by this Assignment are made without warranty of title, express,
implied, or statutory, and without recourse, even as to the return of the
purchase price or other consideration, but with full substitution and
subrogation of Assignee, and all persons claiming by, through and under
Assignee, to the extent assignable, in and to all covenants and warranties of
Assignor's predecessors in title and with full subrogation of all rights
accruing under the applicable statutes of limitation or prescription under the
laws of the state where the Assets are located and all rights of actions of
warranty against all former owners of the Assets. Any covenants or warranties
implied by statute or law by the use of the words "transfer," "convey,"
"bargain" or "assign" or other similar words used in this Assignment are hereby
expressly disclaimed, waived and negated.

         2.2 FURTHER DISCLAIMERS. Assignor and Assignee agree that, to the
extent required by applicable law to be operative, the disclaimers of certain
warranties contained in this paragraph are "conspicuous" disclaimers for the
purposes of any applicable law, rule or order. The Assets are assigned to
Assignee without recourse (even as to the return of the purchase price or other
consideration), covenant or warranty of any kind, express, implied or statutory.
WITHOUT LIMITING THE EXPRESS PROVISIONS HEREOF, ASSIGNEE SPECIFICALLY AGREES
THAT ASSIGNOR IS CONVEYING THE ASSETS ON AN "AS-IS, WHERE-IS, WITH ALL FAULTS"
BASIS AND WITHOUT REPRESENTATION OR WARRANTY, EITHER EXPRESS, IMPLIED AT COMMON
LAW, BY STATUTE OR OTHERWISE, OR STATUTORY (ALL OF WHICH ASSIGNOR HEREBY
DISCLAIMS), RELATING TO (i) TITLE, (ii) TRANSFERABILITY, (iii) FITNESS FOR ANY
PARTICULAR PURPOSE, MERCHANTABILITY, DESIGN OR QUALITY, (iv) COMPLIANCE WITH
SPECIFICATIONS OR CONDITIONS REGARDING OPERATION, (v) FREEDOM FROM PATENT OR
TRADEMARK INFRINGEMENT, (vi) ABSENCE OF LATENT DEFECTS, OR (vii) ANY OTHER
MATTER WHATSOEVER. THE PROVISIONS OF THIS SECTION HAVE BEEN NEGOTIATED BY
ASSIGNEE AND ASSIGNOR AFTER DUE CONSIDERATION AND ARE INTENDED TO BE A COMPLETE
EXCLUSION AND NEGATION OF ANY REPRESENTATIONS OR WARRANTIES OF ASSIGNOR, EITHER
EXPRESS, IMPLIED OR STATUTORY WITH RESPECT TO THE SUBJECT PROPERTY THAT MAY
ARISE PURSUANT TO ANY LAW NOW OR HEREAFTER IN EFFECT OR OTHERWISE EXCEPT AS
EXPRESSLY SET FORTH HEREIN OR IN THAT CERTAIN PURCHASE AND SALE AGREEMENT DATED
EFFECTIVE OCTOBER 1, 1999, BETWEEN ASSIGNOR AND ASSIGNEE.

         2.3 FURTHER ASSURANCES. The parties agree to take all such further
actions and execute, acknowledge and deliver all such further documents that are
necessary or useful in carrying out the purposes of this Assignment. So long as
authorized by applicable law so to do, (i) Assignor agrees to execute,
acknowledge and deliver to Assignee all such other additional instruments,
notices, division orders, transfer orders and other documents and to do all such
other and further acts and things as may be necessary to more fully and
effectively convey and assign to Assignee the Assets conveyed hereby or intended
so to be conveyed; and (ii) Assignee agrees to execute, acknowledge and deliver
to Assignor all such other additional instruments, notices, division orders,
transfer orders and other documents and to do all such other and further acts
and things as may be necessary to more fully and effectively evidence Assignor's
rights in and to the Excluded Assets.

         2.4 SUCCESSORS AND ASSIGNS. This Assignment shall bind and inure to the
benefit of Assignor and Assignee and their respective successors and assigns.

         2.5 GOVERNING LAW. This Assignment shall be governed by and interpreted
in accordance with the laws of the State of Texas, without regard to any
conflicts of law rule that would direct application of the laws of another
jurisdiction, except to the extent that it is mandatory that the law of some
other jurisdiction, wherein the Assets are located, shall apply.

         2.6 EXHIBITS. All Exhibits attached hereto are hereby made a part
hereof and incorporated herein by this reference. References in such Exhibits to
instruments on file in the public records are made for all purposes. Unless
provided otherwise, all recording references in such Exhibits are to the
appropriate records of the counties in which the Assets are located.

         2.7 CAPTIONS. The captions in this Assignment are for convenience only
and shall not be considered a part of or affect the construction or
interpretation of any provision of this Assignment.

         2.8 COUNTERPARTS. This Assignment may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

         2.9 GOVERNMENTAL ASSIGNMENTS. Separate assignments of certain parts of
the Leasehold Interests may be executed on officially approved forms by Assignor
to Assignee in sufficient counterparts to satisfy applicable statutory and
regulatory requirements. Those assignments shall be deemed to contain all of the
exceptions, reservations, rights, titles, power and privileges set forth herein
as fully as though they were set forth in each such assignment. The interests
conveyed by such separate assignments are the same, and not in addition to, the
Leasehold Interests conveyed herein.
<PAGE>   205

         2.10 RECORDATION. To facilitate recording or filing of this Assignment,
(i) the counterpart to be recorded in a given county may contain only those
portions of the Exhibits that describe property located in that county, and (ii)
each counterpart filed with a federal or state agency or office may contain only
those portions of the Exhibits that describe property under the jurisdiction of
that agency or office. Assignor and Assignee have each retained a counterpart of
this Assignment with complete Exhibits. Another counterpart of this Assignment
with complete Exhibits is to be filed in the official real property records of
__________ County, __________.

         2.11 ACCESS ACROSS LEASEHOLD INTERESTS. Assignee agrees to allow
Assignor access, at no cost or expense to Assignor, to or across the Leasehold
Interests, if Assignor conducts future operations in the vicinity of the
Leasehold Interests or with respect to the Excluded Assets.

                  EXECUTED on _______________, 199__, to be effective for all
purposes as of the Effective Time.

                                            ASSIGNOR:

                                            ATLANTIC RICHFIELD COMPANY


                                            By:
                                                -------------------------------
                                                T. L. Holland, Attorney in Fact







                                            ASSIGNEE:

                                            FUTURE ACQUISITION 1995, LTD.
                                            ("PURCHASER")
                                            BY:  FUTURE PETROLEUM CORPORATION,
                                                 ITS GENERAL PARTNER


                                            By:
                                                -------------------------------
                                                Tim J. Goff, President






<PAGE>   206



                                 ACKNOWLEDGMENTS

STATE OF TEXAS    )
                  )
COUNTY OF MIDLAND )

         This instrument was acknowledged before me on this _____ day of
_________________, 1999, by T. L. Holland, as Attorney-in-Fact of ATLANTIC
RICHFIELD COMPANY.

                                            -----------------------------------
                                            Notary Public in and for
                                            the State of
                                                         ----------

                                            My commission expires:
                                                                   ------------

STATE OF            )
         ---------- )
COUNTY OF           )
         ----------

         This instrument was acknowledged before me on this _____ day of
__________, 199__, by _________________________, as ________________ of
______________________.

                                            -----------------------------------
                                            Notary Public in and for
                                            the State of
                                                         ----------

                                            My commission expires:
                                                                   ------------

LIST OF EXHIBITS:

Exhibit A _       Leasehold Interests
Exhibit B _       Excluded Assets




<PAGE>   207



                                 EXHIBIT 10.2(d)

                   Attached to and made a part of that certain
           Purchase & Sale Agreement effective as of October 1, 1999,
              By and between Atlantic Richfield Company (ARCO) and
                     First Reserve Oil & Gas Co. (Purchaser)


                     PROPERTY TRANSFER ACCOUNTING AGREEMENT


ASSIGNOR:                                      ASSIGNEE:
         --------------------------------                ----------------------
PROPERTY:                                      PROPERTY CODE:
         --------------------------------                    ------------------
STATE:   Texas                                 COUNTY:

OPERATOR:
         --------------------------------
EFFECTIVE DATE OF TRANSFER:

OIL PURCHASER:                                  GAS PURCHASER:
              ---------------------------                      ----------------

NOTE: SOME ITEMS MAY OR MAY NOT APPLY IN THE FINAL AGREEMENT TO BE SIGNED AT
      CLOSING. ALL DATES ARE TENTATIVE AND WILL BE ALTERED PENDING ON THE ACTUAL
      CLOSING DATE AND CHANGE OF OPERATORSHIP.

ASSIGNOR and ASSIGNEE hereby agree that:

1.   ASSIGNOR will continue to pay all applicable royalties and severance taxes
     through the production month of ___________ as it pertains to ASSIGNOR's
     interest. ASSIGNEE will be responsible for marketing, collection of revenue
     and payment of royalties and taxes on any production subsequent to this
     date, if applicable.

2.   ASSIGNOR will continue to pay all invoices with an occurrence date through
     the date of operator change. All other expenditures (ie: utility bill,
     etc.) will either be paid by ASSIGNOR and charged to the ASSIGNEE in the
     final accounting settlement, or the applicable invoices will be returned to
     the vendor for rebilling to ASSIGNEE.

3.   ASSIGNOR will continue to prepare and file all required regulatory and
     other monthly production reports through the production month of
     ___________. Copies of reports for periods after the Effective Date shown
     above will be provided to the ASSIGNEE with the final accounting
     settlement. ASSIGNEE will provide at closing any required notification to
     regulatory agencies regarding change of ownership as of _________.
     ASSIGNEE agrees to assume operations on ___________.

4.   ASSIGNOR will notify all utility companies of the change in ownership
     immediately after closing.

5.   ASSIGNOR will provide Letters-in-Lieu of Transfer Orders, to be executed at
     closing, and ASSIGNEE will provide them to the product purchasers
     immediately after closing.

6.   (ASSIGNOR/ASSIGNEE) will pay any applicable current year ad valorem taxes.
     Any tax statements received by the non-paying party will be promptly
     forwarded to the paying party for payment. Proration of taxes through the
     Effective Date shown above will be made by the paying party as part of the
     final accounting settlement.


ACCEPTED AND AGREED TO THIS        DAY OF                 , 1999.
                            ------       -----------------

         ------------------------------       ----------------------------
         "ASSIGNOR"                           "ASSIGNEE"


         By:                                   By:
            ---------------------------           ------------------------
            Name:                                 Name:
                 ----------------------                -------------------
            Title:                                Title:
                  ---------------------                 ------------------




<PAGE>   208



                                 EXHIBIT 10.2(l)

                   Attached to and made a part of that certain
           Purchase & Sale Agreement effective as of October 1, 1999,
              By and between Atlantic Richfield Company (ARCO) and
                    Future Acquisition 1995, Ltd. (Purchaser)


                         FORM OF SURFACE LEASE AGREEMENT

THIS LEASE AGREEMENT is made effective and entered into this 1st day of October,
1999, by and between ATLANTIC RICHFIELD COMPANY, a Delaware corporation, whose
address is P.O. Box 1610, Midland, Texas 79702-1610, hereinafter called
"Lessor", and FUTURE ACQUISITION 1995, LTD., a Texas limited partnership, whose
address is 700 Louisiana, Suite 3700, Houston, Texas 77002, hereinafter referred
to as "Lessee".

LESSOR FOR AND IN CONSIDERATION of the rents, covenants and promises herein
contained to be kept, performed and observed by Lessee, does hereby lease and
demise to Lessee, and Lessee does hereby rent and accept from Lessor, that real
property, referred to as the leased premises and more particularly described in
EXHIBIT "A", attached hereto and made a part hereof, for the purposes of
construction, installation, maintenance, inspection, operation, repair, change
or removal of equipment and facilities useful or incidental to the operation of
the office building and pipe yard located and established at 1907 East Old
Highway 80, Longview, Texas 75605, together with the right of ingress and egress
to and from the leased premises.

TO HAVE AND TO HOLD the said leased premises, together with all rights,
privileges, easements, appurtenances and immunities belonging to or in any way
appertaining to said leased premises, including, but not limited to, concurrent
use of, any and all easements, rights, title and privileges of Lessor now or
hereafter existing in, to or under the leased premises.

1.   This lease shall be for a term of ten (10) years, referred to as the lease
     term, commencing on October 1, 1999, and ending on September 30, 2009;
     subject, however, to earlier termination as hereinafter provided.

2.   Lessee may extend this lease for additional periods of five (5) years by
     giving Lessor written notice of Lessee's intention to do so at least three
     (3) months prior to the expiration of the expiring term. Such notice will
     be sent to Lessor at the heretofore-stated address. This lease shall
     terminate and become null and void without further notice on the expiration
     of the term specified, and any holding over by Lessee after the expiration
     of said term shall not constitute a renewal hereof or give Lessee any
     rights hereunder in or to the leased premises.

3.   The consideration for this lease is FIVE THOUSAND DOLLARS AND NO/100
     ($5,000) cash in hand paid by Lessee to Lessor, receipt of which is hereby
     acknowledged, which said amount shall cover the rental hereunder for the
     period of October 1, 1999 to September 30, 2000. A like rental payment
     shall be due on October 1, 2000 and each subsequent anniversary date hereof
     during the term hereof. All rental payments accruing hereunder shall be
     payable to Lessor in Midland, Texas, by mailing same to Lessor at P.O. Box
     1610, Midland, Texas 79702-1610. In the event any rental payment which may
     become due and payable hereunder is not duly paid when due, then in that
     event said Lessor may, at its option pursue such remedy or remedies as may
     be available to it for the collection of such amount or amounts due and
     owing to it, declare a forfeiture of the rights of the Lessee, in which
     event all rights of the Lessee hereunder shall cease and terminate, or
     both, and said Lessor shall have the right to immediate possession of said
     premises. In the event said Lessor shall elect to declare forfeiture hereof
     as aforesaid, said Lessee shall nevertheless be liable to said Lessor for
     the payment of rentals for the period of time this lease has remained in
     force pursuant hereto; and the rental for any fractional part of said
     yearly period during which said lease shall have been in force shall be
     deemed to be a full year's rental. If Lessee chooses to exercise its option
     to renew for additional consecutive five (5) year term or terms, the rental
     during each successive five-year term shall be twenty-five percent (25%)
     more than the rental paid during the immediately preceding five-year term.
     If Lessee elects to renew for an additional term, it shall do so by giving
     Lessor written notice as described above. Each subsequent payment for each
     five (5) year renewal shall be paid on or before the expiration date of the
     previous term.

4.   In addition to the rental, Lessee shall pay and discharge all taxes,
     general and special assessments, fines or penalties incurred on or after
     October 1, 1999 and other charges of every description which during the
     term of this lease may be levied on or assessed against Lessor's and
     Lessee's interests in the leased premises and all improvements and other
     property thereon.

5.   Any and all material, buildings, structures, equipment and all property of
     whatsoever kind or character placed or used on the subject property by the
     Lessee shall remain the property of Lessee and Lessee shall have the full
     and complete right at any time during the term of this lease, or within a
     reasonable time after the abandonment or termination hereof, not to exceed
     one year, 6 months, to go upon the subject property and remove said
     property therefrom.

6.   Lessee may, at any time and from time to time, encumber the leasehold
     interest, by deed of trust, mortgage or other security instrument, without
     obtaining the consent of Lessor, but no such encumbrance shall constitute a
     lien on the fee title of Lessor, and the indebtedness secured thereby,
     shall at all times be and remain inferior and subordinate to all the
     conditions, covenants and obligations of this lease and to all of the
     rights of the Lessor hereunder.

7.   In the event the leased premises or any part thereof shall be taken for
     public or quasi-public purposes by condemnation as a result of any action
     or proceeding in eminent domain, or shall be transferred in lieu of
     condemnation to any authority entitled to exercise the power of eminent
     domain, the interests of Lessor

<PAGE>   209

     and Lessee in the award or consideration for such transfer and the effect
     of the taking or transfer on this lease shall be as provided by this
     article.

          a) In the event the entire leased premises is taken or so transferred,
          this lease and all of the right, title and interest thereunder shall
          cease on the date title to such land so taken or transferred vests in
          the condemning authority, and the proceeds of such condemnation shall
          be divided so that Lessor shall receive all of such proceeds insofar
          and only insofar as they pertain to the title to the surface of the
          land, and any improvements placed thereon by Lessor, and Lessee shall
          receive all such proceeds insofar and only insofar as they pertain to
          the title to the improvements of Lessee existing on the leased
          premises.

          b) In the event of the taking or transfer of only a part of the leased
          premises leaving the remainder of the premises in such location, or in
          such form, shape or reduced size as to be not effectively and
          practicably usable in the opinion of Lessee for the purpose of
          operation thereon of Lessee's business, this lease and all right,
          title and interest thereunder shall cease on the date title to the
          land or the portion thereof so taken or transferred vests in the
          condemning authority.

          c) In the event of such taking of only a part of the leased premises
          leaving the remainder of the premises in such location and in such
          form, shape or size as to be used effectively and practicably in the
          opinion of Lessee for the purpose of operation thereon of Lessee's
          business, this lease shall terminate and end as to the portion of the
          premises so taken or transferred as of the date title to such portion
          vests in the condemning authority, but shall continue in full force
          and effect as to the portion of the leased premises not so taken or
          transferred. From and after such date, the rental required to be paid
          by Lessee to Lessor shall be reduced during the unexpired portion of
          this lease to that proportion of the annual fixed rental herein
          reserved which the value of the part of the leased premises not so
          taken bears to the value of the total of the leased premises, such
          values to be determined as of the date of the actual commencement of
          the physical taking of said premises when Lessee is disturbed in his
          possession as a result thereof but immediately before any actual
          taking. Lessee shall, however, continue to pay the full amount of
          percentage rent due hereunder.

          d) A voluntary conveyance by Lessor to a public utility, agency or
          authority under threat of a taking under the power of eminent domain
          in lieu of formal proceedings shall be deemed a taking within the
          meaning of this article.

9.   Lessee shall use its best efforts to materially comply with all applicable
     laws, rules and regulations of any governmental authorities in connection
     with its use of the subject property.

10.  Upon the termination of this lease, Lessee shall relinquish the leased
     premises from further use and occupancy and shall leave the surface of the
     leased premises in as near its original condition as is reasonably possible
     and shall remove any and all material, buildings structures, equipment and
     all property of whatsoever kind or character placed or used on the subject
     property by Lessee.

11.  No assignment of this lease, either in whole or in part, shall be effective
     without first obtaining the prior written consent of Lessor.

12.  Lessee shall indemnify and save Lessor harmless from all liability, damage,
     environmental claims, loss, cost and expense on account of any claim or
     claims asserted by any person or persons against Lessor because of bodily
     injury or death or damage to property resulting to such person or persons
     and arising out of Lessee's use and occupancy of the leased premises or the
     conduct and operation of any business of the Lessee thereon, and Lessee
     agrees, upon Lessor's request, to take over and defend, at Lessee's expense
     and without cost to Lessor, any and all suits or other proceedings
     instituted against Lessor by such person or persons to enforce any such
     claim or claims, and to pay and satisfy in full all sums that might be
     required to be paid to such person or persons, including all costs,
     expenses and reasonable attorney's fees, and expert and witness fees
     incurred in connection therewith.

13.  Lessee shall permit Lessor or Lessor's agents, representatives or employees
     to enter on the leased premises for the purpose of inspection, to determine
     whether Lessee is in compliance with the terms of this lease, for purposes
     of maintaining, repairing or altering the premises, or for the purposes of
     showing the leased premises to prospective lessees, purchasers, mortgagees,
     or for the purpose of conducting tests, monitoring operations or remedial
     activities on or to the soil, surface water or groundwater or for any other
     lawful reason.

14.  No waiver by Lessor of any default or breach of any covenant, condition or
     stipulation herein contained shall be treated as a waiver of any subsequent
     default or breach of the same or any other covenant, condition or
     stipulation hereof.

15.  In the event Lessor shall sell or transfer the leased premises or any part
     thereof and as a part of such transaction shall assign its interest as
     Lessor in and to this lease, then from and after the effective date of such
     sale, assignment or transfer, Lessor shall have no further liability under
     this lease to Lessee except as to matters of liability which shall have
     accrued and are unsatisfied as of such date, it being intended that the
     covenants and obligations contained in this lease on the part of Lessor
     shall be binding on Lessor and its successors and assigns only during and
     in respect of their respective successive periods of ownership of the fee.

16.  This agreement shall be binding upon and inure to the benefit of the
     parties hereto and their respective heirs, executors, administrators, legal
     representatives, successors and assigns where permitted by this agreement.

17.  This agreement shall be construed under and in accordance with the laws of
     the State of Texas.
<PAGE>   210

18.  In case any one or more of the provisions contained in this agreement shall
     for any reason be held to be invalid, illegal or unenforceable in any
     respect, such invalidity, illegality or unenforceability shall not affect
     any other provision thereof and this agreement shall be construed as if
     such invalid, illegal or unenforceable provision had never been contained
     herein.

19.  This agreement constitutes the sole and only agreement of the parties
     hereto and supersedes any prior understandings or written or oral
     agreements between the parties respecting the within subject matter.

20.  No amendment, modification or alteration of the terms hereof shall be
     binding unless the same be in writing, dated subsequent to the date hereof
     and duly executed by the parties hereto.

21.  The rights and remedies provided by this lease agreement are cumulative and
     the use of any one right or remedy by either party shall not preclude or
     waive its right to use any or all other remedies. Said rights and remedies
     are given in addition to any other rights the parties may have by law,
     statute, ordinance or otherwise.

22.  In the event Lessor or Lessee breaches any of the terms of this agreement
     whereby the party not in default employs attorneys to protect or enforce
     its rights hereunder and prevails, then the defaulting party agrees to pay
     the other party reasonable attorney's fees so incurred by such other party.

THIS LEASE HAS BEEN EXECUTED by the parties on the date and year first above
written.


LESSOR:                                         LESSEE:
ATLANTIC RICHFIELD COMPANY                      FUTURE ACQUISITION 1995, LTD.
                                                BY:  FUTURE PETROLEUM
                                                     CORPORATION, ITS
                                                     GENERAL PARTNER


By:                                             By:
    --------------------------------                ---------------------------
     T.L. Holland, Attorney-in-Fact                 Title:
                                                          ---------------------

THE STATE OF TEXAS       )
COUNTY OF MIDLAND        )

This instrument was acknowledged before me on this _______ day of _________ ,
1999, by T.L. Holland, as Attorney-in-Fact of ATLANTIC RICHFIELD COMPANY, a
Delaware corporation, on behalf of said corporation.


                                    -------------------------------------------
                                    Notary Public in and for the State of Texas
                                    Commission Expires:
                                                       ------------------------

THE STATE OF TEXAS           )
COUNTY OF                    )
          -----------------

This instrument was acknowledged before me on this _____ day of ____________ ,
1999, by ________________________________ , as ______________________________ of
FUTURE PETROLEUM CORPORATION, a Texas corporation, as the general partner of
FUTURE ACQUISITION 1995, LTD., a Texas limited partnership, on behalf of said
partnership.


                                    -------------------------------------------
                                    Notary Public in and for the State of Texas
                                    Commission Expires:
                                                       ------------------------



<PAGE>   1
                                                                     AS EXECUTED


                                U.S. $100,000,000

                  SECOND AMENDED AND RESTATED CREDIT AGREEMENT,

                         dated as of September 30, 1999,

                                      among

                              BARGO ENERGY COMPANY,

                                as the Borrower,

                         CERTAIN FINANCIAL INSTITUTIONS,

                                 as the Lenders

                                       and

                             BANK OF AMERICA, N.A.,

                     as Administrative Agent for the Lenders



                         BANC OF AMERICA SECURITIES LLC
                     as Sole Lead Arranger and Book Manager


<PAGE>   2


                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                               PAGE
<S>                 <C>                                                                                       <C>

ARTICLE I                  DEFINITIONS AND ACCOUNTING TERMS.......................................................2
         1.1.       Defined Terms.................................................................................2
         1.2.       Use of Defined Terms.........................................................................29
         1.3.       Cross-References.............................................................................30
         1.4.       Accounting and Financial Determinations......................................................31

ARTICLE II                 COMMITMENTS, BORROWING PROCEDURES AND NOTE............................................31
         2.1.       Commitments..................................................................................31
                    2.1.1.    Revolving Credit Loans.............................................................31
                    2.1.2.    Letters of Credit..................................................................32
                    2.1.3.    Lenders Not Required To Make Loans Under Certain Circumstances.....................32
         2.2.       Reduction of Commitment Amount...............................................................32
                    2.2.1.    Optional...........................................................................32
                    2.2.2.    Mandatory..........................................................................33
         2.3.       Borrowing Procedure..........................................................................33
         2.4.       Continuation and Conversion Elections........................................................33
         2.5.       Funding......................................................................................33
         2.6.       Loan Accounts and Notes......................................................................34
         2.7.       Borrowing Base Redetermination...............................................................35
         2.8.       Purposes.....................................................................................36

ARTICLE III                REPAYMENTS, PREPAYMENTS, INTEREST AND FEES............................................37
         3.1.       Repayments and Prepayments and Certain Borrowing
                    Base Matters.................................................................................37
                    3.1.1.    Repayments and Prepayments.........................................................37
                    3.1.2.    Borrowing Base Deficiencies and Asset Sales........................................38
         3.2.       Interest Provisions..........................................................................39
                    3.2.1.    Rates .............................................................................39
                    3.2.2.    Post-Maturity Rates................................................................40
                    3.2.3.    Payment Dates......................................................................40
         3.3.       Fees.........................................................................................41
                    3.3.1.    Closing Fee........................................................................41
                    3.3.2.    Administrative Agent's Fees........................................................41
                    3.3.3.    Commitment Fees....................................................................41
                    3.3.4.    Letter of Credit Face Amount Fee...................................................42
                    3.3.5.    Letter of Credit Issuance Fee......................................................42
                    3.3.6.    Letter of Credit Administrative Fee................................................42
                    3.3.7.    Engineering Fees...................................................................42
</TABLE>

<PAGE>   3

                                TABLE OF CONTENTS
                                    CONTINUED
<TABLE>
<CAPTION>
                                                                                                               PAGE
<S>                 <C>                                                                                       <C>
         3.4.       Proceeds Account.............................................................................42

ARTICLE IV                 LETTERS OF CREDIT.....................................................................43
         4.1.       Issuance Requests............................................................................43
         4.2.       Issuances and Extensions.....................................................................44
         4.3.       Lenders' Participation.......................................................................45
         4.4.       Disbursements................................................................................46
         4.5.       Reimbursement................................................................................46
         4.6.       Deemed Disbursements.........................................................................47
         4.7.       Nature of Reimbursement Obligations..........................................................47
         4.8.       Increased Costs; Indemnity...................................................................49

ARTICLE V                  CERTAIN INTEREST RATE AND OTHER PROVISIONS............................................50
         5.1.       LIBO Rate Lending Unlawful...................................................................50
         5.2.       Deposits Unavailable.........................................................................51
         5.3.       Increased LIBO Rate Loan Costs, etc..........................................................51
         5.4.       Funding Losses...............................................................................52
         5.5.       Increased Capital Costs......................................................................53
         5.6.       Taxes........................................................................................53
         5.7.       Payments, Computations, etc..................................................................55
         5.8.       Sharing of Payments..........................................................................55
         5.9.       Setoff.......................................................................................56
         5.10.      Use of Proceeds..............................................................................57
         5.11.      Change of Lender.............................................................................57

ARTICLE VI                 CONDITIONS PRECEDENT..................................................................58
         6.1.       Initial Credit Extension.....................................................................58
                    6.1.1.    Resolutions, etc...................................................................58
                    6.1.2.    Delivery of Notes..................................................................59
                    6.1.3.    Guaranties.........................................................................59
                    6.1.4.    Pledge Agreements..................................................................59
                    6.1.5.    Security Agreement.................................................................59
                    6.1.6.    Amendment to Existing Mortgages....................................................60
                    6.1.7.    Opinions of Counsel................................................................60
                    6.1.8.    UCC Searches.......................................................................60
                    6.1.9.    Evidence of Insurance..............................................................61
                    6.1.10.   Engineering Report.................................................................61
                    6.1.11.   Environmental Report and Questionnaire.............................................61
</TABLE>

<PAGE>   4

                                TABLE OF CONTENTS
                                    CONTINUED
<TABLE>
<CAPTION>
                                                                                                               PAGE
<S>                 <C>                                                                                       <C>

                    6.1.12.   Budget.............................................................................61
                    6.1.13.   Financial Statements...............................................................61
                    6.1.14.   Consents, etc......................................................................61
                    6.1.15.   Shareholder Acknowledgment.........................................................62
                    6.1.16.   Compliance with Representations and Warranties.....................................62
                    6.1.17.   Amended Security Documents, etc....................................................62
                    6.1.18.   Closing Fees, Expenses, etc........................................................62
                    6.1.19.   Other Documents....................................................................62
         6.2.       Inclusion of Hydrocarbon Interests in the Borrowing Base.....................................62
                    6.2.1.    Environmental Report and Questionnaire.............................................63
                    6.2.2.    Mortgage...........................................................................63
                    6.2.3.    UCC Searches.......................................................................63
                    6.2.4.    Evidence of Insurance..............................................................64
                    6.2.5.    Engineering Reports................................................................64
                    6.2.6.    Material Contracts; Security Agreement.............................................64
                    6.2.7.    Guaranties.........................................................................64
                    6.2.8.    Pledge Agreement...................................................................64
                    6.2.9.    Other Documents....................................................................65
         6.3.       All Credit Extensions........................................................................65
                    6.3.1.    Compliance with Warranties, No Default, etc........................................65
                    6.3.2.    Credit Request.....................................................................65
                    6.3.3.    Satisfactory Legal Form............................................................66

ARTICLE VII                REPRESENTATIONS AND WARRANTIES........................................................66
         7.1.       Organization, etc............................................................................66
         7.2.       Due Authorization, Non-Contravention, etc....................................................67
         7.3.       Government Approval, Regulation, etc.........................................................67
         7.4.       Investment Company Act.......................................................................67
         7.5.       Public Utility Holding Company Act...........................................................67
         7.6.       Validity, etc................................................................................67
         7.7.       Financial Information........................................................................68
         7.8.       No Material Adverse Change...................................................................68
         7.9.       Litigation, Labor Controversies, etc.........................................................68
         7.10.      Ownership of Properties......................................................................68
         7.11.      Taxes........................................................................................69
         7.12.      Pension and Welfare Plans....................................................................69
         7.13.      Compliance with Law..........................................................................69
         7.14.      Claims and Liabilities.......................................................................69
</TABLE>

<PAGE>   5

                                TABLE OF CONTENTS
                                    CONTINUED
<TABLE>
<CAPTION>
                                                                                                               PAGE
<S>                 <C>                                                                                       <C>
         7.15.      No Prohibition on Perfection of Security Documents...........................................69
         7.16.      Solvency.....................................................................................70
         7.17.      Environmental Warranties.....................................................................70
         7.18.      Regulations T, U and X.......................................................................72
         7.19.      Insurance....................................................................................72
         7.20.      Year 2000 Compliance.........................................................................72
         7.21.      Accuracy of Information......................................................................72

ARTICLE VIII               COVENANTS.............................................................................73
         8.1.       Affirmative Covenants........................................................................73
                    8.1.1.    Financial Information, Reports, Notices, etc.......................................73
                    8.1.2.    Compliance with Laws, etc..........................................................76
                    8.1.3.    Maintenance and Development of Properties..........................................77
                    8.1.4.    Insurance..........................................................................77
                    8.1.5.    Books and Records..................................................................78
                    8.1.6.    Environmental Covenant.............................................................78
                    8.1.7.    Further Assurances.................................................................79
                    8.1.8.    Year 2000 Compliance...............................................................80
         8.2.       Negative Covenants...........................................................................80
                    8.2.1.    Business Activities................................................................80
                    8.2.2.    Indebtedness.......................................................................80
                    8.2.3.    Liens .............................................................................82
                    8.2.4.    Financial Condition................................................................85
                    8.2.5.    Investments........................................................................85
                    8.2.6.    Restricted Payments, etc...........................................................87
                    8.2.7.    Rental Obligations.................................................................87
                    8.2.8.    Consolidation, Merger, etc.........................................................88
                    8.2.9.    Asset Dispositions, etc............................................................88
                    8.2.10.   Modification of Certain Documents..................................................89
                    8.2.11.   Transactions with Affiliates.......................................................89
                    8.2.12.   Negative Pledges, Restrictive Agreements, etc......................................89
                    8.2.13.   Take or Pay Contracts..............................................................90
                    8.2.14.   Sale/Leasebacks....................................................................90
                    8.2.15.   Hydrocarbon Hedging................................................................90

ARTICLE IX                 EVENTS OF DEFAULT.....................................................................91
         9.1.       Listing of Events of Default.................................................................91
                    9.1.1.    Non-Payment of Obligations.........................................................91
</TABLE>

<PAGE>   6

                                TABLE OF CONTENTS
                                    CONTINUED
<TABLE>
<CAPTION>
                                                                                                               PAGE
<S>                 <C>                                                                                       <C>

                    9.1.2.    Breach of Warranty.................................................................91
                    9.1.3.    Non-Performance of Certain Covenants and Obligations...............................91
                    9.1.4.    Non-Performance of Other Covenants and Obligations.................................92
                    9.1.5.    Default on Other Indebtedness......................................................92
                    9.1.6.    Judgments..........................................................................92
                    9.1.7.    Pension Plans......................................................................92
                    9.1.8.    Control of the Borrower............................................................93
                    9.1.9.    Bankruptcy, Insolvency, etc........................................................93
                    9.1.10.   Impairment of Security, etc........................................................94
                    9.1.11.   Material Adverse Effect............................................................94
                    9.1.12.   Borrowing Base Deficiency..........................................................94
         9.2.       Action if Bankruptcy.........................................................................94
         9.3.       Action if Other Event of Default.............................................................94
         9.4.       Rights Not Exclusive.........................................................................94

ARTICLE X                  THE ADMINISTRATIVE AGENT..............................................................95
         10.1.      Actions......................................................................................95
         10.2.      Funding Reliance, etc........................................................................95
         10.3.      Exculpation..................................................................................96
         10.4.      Successor....................................................................................96
         10.5.      Loans or Letters of Credit Issued by Bank of America.........................................97
         10.6.      Credit Decisions.............................................................................97
         10.7.      Copies, etc..................................................................................97

ARTICLE XI                 MISCELLANEOUS PROVISIONS..............................................................98
         11.1.      Waivers, Amendments, etc.....................................................................98
         11.2.      Notices......................................................................................99
         11.3.      Payment of Costs and Expenses...............................................................100
         11.4.      Indemnification.............................................................................100
         11.5.      Survival....................................................................................101
         11.6.      Severability................................................................................102
         11.7.      Headings....................................................................................102
         11.8.      Execution in Counterparts, Effectiveness, etc...............................................102
         11.9.      Governing Law; Entire Agreement.............................................................102
         11.10.     Successors and Assigns......................................................................102
         11.11.     Sale and Transfer of Loans and Notes; Participations in
                    Loans and Notes.............................................................................103
                    11.11.1.  Assignments.......................................................................103
</TABLE>
<PAGE>   7
<TABLE>
<S>                <C>                                                                                         <C>
                    11.11.2.  Participations....................................................................104
         11.12.     Forum Selection and Consent to Jurisdiction.................................................105
         11.13.     Waiver of Jury Trial........................................................................106
         11.14.     Other Transactions..........................................................................106
         11.15.     Maximum Interest............................................................................106
         11.16.     Controlling Document........................................................................108
         11.17.     Notice......................................................................................109
</TABLE>


<TABLE>
<S>                      <C>
SCHEDULE I               Disclosure Schedule
SCHEDULE II              Subsidiaries
SCHEDULE III             Administrative Details
SCHEDULE IV              Existing Mortgages
SCHEDULE V               Existing Hedging Agreements
SCHEDULE VI              Updated Title Searches

EXHIBIT A                Form of Amended and Restated Secured Promissory Note
EXHIBIT B                Form of Security Agreement
EXHIBIT C-1              Form of Borrowing Request
EXHIBIT C-2              Form of Continuation/Conversion Notice
EXHIBIT D                Form of Guaranty
EXHIBIT E-1              Form of Mortgage
EXHIBIT E-2              Form of California Mortgage
EXHIBIT F-1              Form of Pledge Agreement (Stock)
EXHIBIT F-2              Form of Pledge Agreement (Partnership Interests)
EXHIBIT G                Form of Lender Assignment Notice
EXHIBIT H                Form of Opinions of Counsel to the Borrower, et al.
EXHIBIT I-1              Form of Pre-Closing Title Opinions of Special Counsel
                         to the Borrower
EXHIBIT I-2              Form of Post-Closing Title Opinions of Special Counsel
                         to the Borrower
EXHIBIT J                Form of Issuance Request
</TABLE>


<PAGE>   8

                  SECOND AMENDED AND RESTATED CREDIT AGREEMENT


         THIS SECOND AMENDED AND RESTATED CREDIT AGREEMENT, dated as of
September 30, 1999, among BARGO ENERGY COMPANY, a Texas corporation (the
"Borrower"), the various financial institutions as are now or may hereafter
become parties hereto (collectively, the "Lenders") and BANK OF AMERICA, N.A., a
national banking association, formerly Bank of America National Trust and
Savings Association ("Bank of America"), as administrative agent for the Lenders
(in such capacity, the "Administrative Agent"),


                              W I T N E S S E T H:

         WHEREAS, the Borrower is engaged in the business of oil and gas
exploration and production, and activities related or ancillary thereto; and

         WHEREAS, Future Petroleum Corporation, a Utah corporation ("Old FPC"),
and Bank of America are parties to that certain Amended and Restated Credit
Agreement dated as of December 4, 1998 (as amended, the "Existing Credit
Agreement") pursuant to which Bank of America made commitments to make loans to
Old FPC from time to time prior to the applicable commitment termination date in
the maximum aggregate principal amount of loans at any one time not to exceed in
the aggregate the lesser of (x) the collateral value, or (y) $50,000,000; and

         WHEREAS, Old FPC has, prior to the Effective Date, merged with and into
the Borrower, such that the Borrower has assumed all of the liabilities and
obligations, and is the owner of all of the assets, of Old FPC pursuant to the
Merger Agreement (hereinafter defined); and

         WHEREAS, the Borrower desires to obtain Commitments from the Lenders
and the Issuer pursuant to which

         (a)      Loans will be made to the Borrower from time to time prior to
                  the Commitment Termination Date; and

         (b)      Letters of Credit will be issued by the Issuer for the account
                  of the Borrower from time to time prior to the Commitment
                  Termination Date;

in maximum aggregate principal amount of Loans and Letter of Credit Outstandings
at any one time not to exceed in the aggregate the lesser of (x) the Borrowing
Base, or (y) $100,000,000; and



<PAGE>   9



         WHEREAS, the Lenders and the Issuer are willing, on the terms and
subject to the conditions hereinafter set forth (including Article VI), to
extend such Commitments, make such Loans to the Borrower and issue and
participate in such Letters of Credit; and

         WHEREAS, the parties have agreed that it is in their respective best
interests to enter into this Agreement amending, restating and superseding the
Existing Credit Agreement; and

         WHEREAS, the proceeds of such Loans will be used

                  (a)      to refinance all Indebtedness under the Existing
                           Credit Agreement; and

                  (b)      for Capital Expenditures, working capital and general
                           corporate purposes of the Borrower and its Material
                           Subsidiaries.

         NOW, THEREFORE, the parties hereto agree to amend and restate the
Existing Credit Agreement in its entirety as follows:


                                    ARTICLE I

                        DEFINITIONS AND ACCOUNTING TERMS

         SECTION 1.1. DEFINED TERMS. The following terms (whether or not
underscored) when used in this Agreement, including its preamble and recitals,
shall, except where the context otherwise requires, have the following meanings
(such meanings to be equally applicable to the singular and plural forms
thereof):

         "Administrative Agent" is defined in the preamble and includes each
other Person as shall have subsequently been appointed as the successor
Administrative Agent pursuant to Section 10.4.

         "Affiliate" of any Person means any other Person which, directly or
indirectly, controls, is controlled by or is under common control with such
Person (excluding any trustee under, or any committee with responsibility for
administering, any Plan). A Person shall be deemed to be "controlled by" any
other Person if such other Person possesses, directly or indirectly, power

                  (a) to vote 10% or more of the securities (on a fully diluted
         basis) having ordinary voting power for the election of directors or
         managing general partners; or

                                      -2-

<PAGE>   10


                  (b) to direct or cause the direction of the management and
         policies of such Person whether by contract or otherwise.

         "Agreement" means, on any date, this Second Amended and Restated Credit
Agreement as originally in effect on the Effective Date and as thereafter from
time to time amended, supplemented, amended and restated, or otherwise modified
and in effect on such date.

         "Alternate Base Rate" means, on any date and with respect to all Base
Rate Loans, a fluctuating rate of interest per annum equal to the higher of

                  (a) the rate of interest as announced from time to time by the
         Administrative Agent as its "prime rate" at its Domestic Office; or

                  (b) the Federal Funds Effective Rate most recently determined
         by the Administrative Agent plus 1/2%.

The Alternate Base Rate is not necessarily intended to be the lowest rate of
interest in connection with extensions of credit. Changes in the rate of
interest on that portion of any Loans maintained as Base Rate Loans will take
effect simultaneously with each change in the Alternate Base Rate. The
Administrative Agent will give notice to the Borrower and the Lenders of changes
in the Alternate Base Rate.

         "Applicable Law" means with respect to any Person or matter, any
federal, state, regional, tribal or local statute, law, code, rule, treaty,
convention, application, order, decree, consent decree, injunction, directive,
determination or other requirement (whether or not having the force of law)
relating to such Person or matter and, where applicable, any interpretation
thereof by a Government Agency having jurisdiction with respect thereto or
charged with the administration or interpretation thereof.

         "Applicable Margin" means, with respect to any Credit Extension of any
type and at any time of determination, a margin above the interest rate or fee
applicable to such type of Credit Extension determined by reference to the
utilization of the Borrowing Base, as follows:


                                      -3-

<PAGE>   11


     <TABLE>
     <CAPTION>
          Percentage of                                                                    Alternate
     Borrowing Base Utilized              Commitment Fee       LIBO Rate Margin        Base Rate Margin
     -----------------------              --------------       ----------------        ----------------
<S>                                       <C>                  <C>                    <C>
     Less than 40%                             0.30%                  1.50%                 0.50%

     40% or more, but
     less than 80%                             0.40%                  1.75%                 0.75%

     Equal to or greater than 80%              0.50%                  2.00%                 1.00%
     </TABLE>


Changes in the Applicable Margin with respect to any Credit Extension and
Commitment Fee shall take effect, as applicable, upon the effective date of each
Borrowing Base Redetermination and immediately upon any Credit Extension.
"Utilization" and "utilized" means, at any time, the percentage obtained by
dividing (i) the sum of all outstanding Loans plus Letter of Credit Outstandings
by (ii) the Borrowing Base.

Notwithstanding the foregoing, as required by Section 3.2.2(z) and without
duplication, after any Borrowing Base Deficiency has existed for more than
ninety (90) consecutive days, each LIBO Rate Margin and Alternate Base Rate
Margin shall be the rate set forth above plus 3.00% per annum until such
Borrowing Base Deficiency has been eliminated.

         "Approval" means each and every approval, authorization, license,
permit, consent, variance, land use entitlement, franchise, agreement, filing or
registration by or with any Government Agency or other Person necessary for all
stages of developing, operating, maintaining and abandoning Oil and Gas
Properties.

         "Arco East Texas Property" means those Oil and Gas Properties acquired
by a Subsidiary of the Company from Atlantic Richfield Company pursuant to that
certain Purchase and Sale Agreement dated August 3, 1999, effective October 1,
1999.

         "Arco Title Indemnity" means that certain Title Indemnity Agreement
dated as of September 8, 1999, between Atlantic Richfield Company and Future
Acquisition 1995, Ltd., pursuant to which Atlantic Richfield Company indemnifies
and holds harmless Future Acquisition 1995, Ltd. and other parties described
therein from and against losses and claims arising from the "Marshall Title
Defect" and the "Marshall Judgment" (as such terms are defined therein) which
may burden the Arco East Texas Property.

                                      -4-

<PAGE>   12


         "Assignee Lender" is defined in Section 11.11.1.

         "Authorized Officer" means, relative to any Obligor, those of its
officers whose signatures and incumbency shall have been certified to the
Administrative Agent and the Lenders pursuant to Section 6.1.1.

         "Base Rate Loan" means a Loan bearing interest at a fluctuating rate
determined by reference to the Alternate Base Rate.

         "Bank of America" means Bank of America, N.A., formerly Bank of America
National Trust and Savings Association.

         "Borrower" is defined in the preamble.

         "Borrowing" means the Loans of the same type and, in the case of LIBO
Rate Loans, having the same Interest Period, made by all Lenders on the same
Business Day and pursuant to the same Borrowing Request in accordance with
Section 2.3.

         "Borrowing Base" shall mean, as at any date, (a) prior to the initial
Borrowing Base Redetermination, $40,000,000, (b) prior to the initial Borrowing
Base Redetermination, but after the satisfaction of the conditions precedent set
forth in Section 6.2 pertaining to the Arco East Texas Property and upon its
inclusion in the Borrowing Base, $55,000,000, and (c) thereafter, the amount
determined from time to time pursuant to Section 2.7.

         "Borrowing Base Deficiency" means at any time the amount by which (a)
the sum of the aggregate outstanding principal amount of all Loans plus Letter
of Credit Outstandings exceeds (b) the then current Borrowing Base.

         "Borrowing Base Deficiency Notification Date" shall mean the date on
which any notice of a Borrowing Base Deficiency is received by the Borrower.

         "Borrowing Base Determination Date" is defined in Section 2.7(c).

         "Borrowing Base Redetermination" shall mean a Scheduled Redetermination
or a Requested Redetermination, as the case may be.

         "Borrowing Request" means a loan request and certificate duly executed
by an Authorized Officer of the Borrower, substantially in the form of Exhibit
C-1 hereto.

         "Business Day" means (a) any day which is neither a Saturday or Sunday
nor a legal holiday on which banks are authorized or required to be closed in
Dallas, Texas; and (b) relative to the making, continuing, prepaying or repaying
of any LIBO Rate Loans, any day on which dealings in Dollars are carried on in
the London interbank market.

                                      -5-

<PAGE>   13



         "Capital Expenditures" means, for any period, the sum of (without
duplication) (a) all expenditures of the Borrower and its consolidated
Subsidiaries for fixed or capital assets made during such period which, in
accordance with GAAP, would be classified as capital expenditures; and (b) the
aggregate amount of all Capitalized Lease Liabilities incurred during such
period.

         "Capital Stock" means any and all shares, interests, participations or
other equivalents in the equity interest (however designated) in such Person and
any rights (other than debt securities convertible into an equity interest),
warrants or options to subscribe for or to acquire interest in such Person.

         "Capitalized Lease Liabilities" means all monetary obligations of the
Borrower or any of its consolidated Subsidiaries under any leasing or similar
arrangement which, in accordance with GAAP, would be classified as capitalized
leases, and, for purposes of this Agreement and each other Loan Document, the
amount of such obligations shall be the capitalized amount thereof, determined
in accordance with GAAP.

         "Cash Equivalent Investment" means, at any time:

                  (a) any evidence of Indebtedness, maturing not more than one
         (1) year after such time, issued or guaranteed by the United States
         Government;

                  (b) commercial paper, maturing not more than nine (9) months
         from the date of issue, which is issued by

                           (i) a corporation (other than an Affiliate of the
                  Borrower) organized under the laws of any state of the United
                  States or of the District of Columbia and rated at least A-1
                  by Standard & Poor's Corporation or P-1 by Moody's Investors
                  Service, Inc., or

                           (ii) a Lender which is rated at least A-1 by Standard
                  & Poor's Corporation or P-1 by Moody's Investors Service,
                  Inc.;

                  (c) any certificate of deposit or bankers acceptance, maturing
         not more than one (1) year after such time, which is issued by

                           (i) a commercial banking institution that is
                  organized under the laws of the United States, or any state
                  thereof, or that is organized under the laws of any other
                  country which is a member of the Organization for Economic
                  Development, or a political subdivision of any such country,
                  and has a combined capital and surplus and undivided profits
                  of not less than $500,000,000, or


                                      -6-

<PAGE>   14


                           (ii) a Lender which is rated at least A-1 by Standard
                  & Poor's Corporation or P-1 by Moody's Investors Service,
                  Inc.; or

                  (d) any repurchase agreement entered into with any Lender (or
         other commercial banking institution of the stature referred to in
         clause (c)) which

                           (i) is secured by a fully perfected security interest
                  in any obligation of the type described in any of clauses (a)
                  through (c); and

                           (ii) has a market value at the time such repurchase
                  agreement is entered into of not less than 100% of the
                  repurchase obligation of such Lender (or other commercial
                  banking institution) thereunder.

         "CERCLA" means the Comprehensive Environmental Response, Compensation
and Liability Act of 1980, as amended.

         "CERCLIS" means the Comprehensive Environmental Response Compensation
Liability Information System List.

         "Change of Control" means, with respect to the Borrower, the occurrence
of:

                  (a) At such time as any Person or "group" (within the meaning
         of Section 13(d)(3) of the Exchange Act), (other than the Principal
         Shareholders), is or becomes the beneficial owner, directly or
         indirectly, of outstanding shares of the Capital Stock of the Borrower
         entitling such Person or Persons to exercise 50% or more of the total
         votes entitled to be cast at a regular or special meeting, or by action
         by written consent, of the stockholders of the Borrower in the election
         of directors (the term "beneficial owner" shall be determined in
         accordance with Rule 13d-3 of the Exchange Act);

                  (b) At such time as the Borrower shall have consummated a
         reorganization, merger or consolidation or similar transaction, in each
         case, with respect to which all or substantially all the Principal
         Shareholders who were beneficial owners of the outstanding shares of
         Capital Stock of the Borrower immediately prior to such reorganization,
         merger or consolidation, beneficially own, directly or indirectly, less
         than 50% of the combined voting power of the then outstanding shares of
         Capital Stock of the Borrower resulting from such reorganization,
         merger or consolidation; or

                  (c) Unless otherwise permitted under Section 8.2.8, if the
         Borrower ceases to own beneficially and of record 100% of the Capital
         Stock of each of Future Texas, Future Nevada and Future California, or
         if Future Texas or Future Nevada ceases to own beneficially and of
         record 100% of the general


                                      -7-

<PAGE>   15

         partner and limited partner interests, respectively, in the Partnership
         Subsidiaries;

         provided that, the following shall not be deemed a Change of Control:
(a) the acquisition or beneficial ownership of voting securities by the Initial
Holders, any Principal Shareholder Affiliate, or any group of which an Initial
Holder or its respective Principal Shareholder Affiliates is a member; (b) any
repurchase of voting securities by the Borrower or any Subsidiary of the
Borrower; (c) any transaction that causes a Person to become the beneficial
owner of voting securities of the Borrower as a result of acquiring an interest
in an Initial Holder, a Principal Shareholder Affiliate of an Initial Holder or
a transferee of an Initial Holder, or (d) any distribution or dividend to
equity-holders otherwise permitted by this Agreement made by any of the
following entities to their current equity-holders -- BER Partnership L.P.,
formerly known as Bargo Energy Resources, Ltd., a Texas limited partnership; TJG
Investments, Inc., a Texas corporation; BEC Partnership, formerly known as Bargo
Energy Company, a Texas general partnership; and BOC Operating Corporation,
formerly known as Bargo Operating Company, Inc., a Texas corporation.

         "Code" means the Internal Revenue Code of 1986, as amended, reformed or
otherwise modified from time to time.

         "Commission" means the Securities and Exchange Commission or any
similar agency then having jurisdiction to enforce the Securities Act of 1933,
and the rules and regulations of the Commission thereunder and under the
Exchange Act.

         "Commitment" means, relative to any Lender, such Lender's obligation
pursuant to Sections 2.1.1 and 2.1.2 to make Loans to the Borrower and to issue
(in the case of an Issuer) or participate in (in the case of all Lenders)
Letters of Credit pursuant to Section 2.1.3.

         "Commitment Amount" means the lesser of (i) the Total Commitment, as
reduced from time to time pursuant to the provisions of Section 2.2, or (ii) the
Borrowing Base.

         "Commitment Fee" is defined in Section 3.3.3.

         "Commitment Availability" means, on any date, the excess of

                  (a) the then Commitment Amount, over

                  (b) the sum of

                           (i) the aggregate outstanding principal amount of all
                  Loans on such date, plus


                                      -8-

<PAGE>   16


                           (ii) the Letter of Credit Outstandings on such date.

         "Commitment Termination Date" means the earliest of

                  (a) the Stated Maturity Date;

                  (b) the date on which the Commitment Amount is terminated in
         full or reduced to zero pursuant to Section 2.2; and

                  (c) the date on which any Commitment Termination Event occurs.

         "Commitment Termination Event" means

                  (a) the occurrence of any Default described in clauses (a)
         through (d) of Section 9.1.9 with respect to the Borrower or any
         Subsidiary; or

                  (b) the occurrence and continuance of any other Event of
         Default and either

                           (i) the declaration of the Loans and other
                  Obligations to be due and payable pursuant to Section 9.3, or

                           (ii) in the absence of such declaration, the giving
                  of notice by the Administrative Agent, acting at the direction
                  of the Required Lenders, to the Borrower that the Commitments
                  have been terminated.

         "Consents" means a Consent to Assignment executed and delivered
pursuant to Section 6.1.15 or Section 6.2.6, in form and substance satisfactory
to the Administrative Agent, pursuant to which the counterparty to each Material
Contract (i) consents to the assignment of each such Material Contract to the
Administrative Agent as security for the Obligations, and (ii) provides the
Administrative Agent an independent right to cure defaults under such Material
Contract.

         "Consolidated Net Income" means, with respect to the Borrower and its
consolidated Subsidiaries for any period, the consolidated net income (or loss)
of the Borrower and its consolidated Subsidiaries for such period.

         "Contingent Liability" means any agreement, undertaking or arrangement
by which any Person guarantees, endorses or otherwise becomes or is contingently
liable upon (by direct or indirect agreement, contingent or otherwise, to
provide funds for payment, to supply funds to, or otherwise to invest in, a
debtor, or otherwise to assure a creditor against loss) the indebtedness,
obligation or any other liability of any other Person (other than by
endorsements of instruments in the course of collection), or guarantees the
payment of dividends or other distributions upon the shares of any


                                      -9-

<PAGE>   17

other Person. The amount of any Person's obligation under any Contingent
Liability shall (subject to any limitation set forth therein) be deemed to be
the outstanding principal amount (or maximum principal amount, if larger) of the
debt, obligation or other liability guaranteed thereby.

         "Continuation/Conversion Notice" means a notice of continuation or
conversion and certificate duly executed by an Authorized Officer of the
Borrower, substantially in the form of Exhibit C-2 hereto.

         "Controlled Group" means all members of a controlled group of
corporations and all members of a controlled group of trades or businesses
(whether or not incorporated) under common control which, together with the
Borrower, are treated as a single employer under Section 414(b) or 414(c) of the
Code or Section 4001 of ERISA.

         "Credit Extension" means and includes

                  (a) the advancing of any Loans by the Lenders in connection
         with a Borrowing, and

                  (b) any issuance by an Issuer, or extension of the Stated
         Expiry Date by an Issuer, of a Letter of Credit.

         "Current Ratio" means, at the end of each Fiscal Quarter, the ratio of

                  (a) the current assets (including the unused portion of the
         Commitment Amount) of the Borrower and its consolidated Subsidiaries

to

                  (b) the current liabilities (minus the current portion of long
         term Debt (including Debt under this Agreement)) of the Borrower and
         its consolidated Subsidiaries.

         "Debt" means the outstanding principal amount of all Indebtedness of
the Borrower and its consolidated Subsidiaries of the nature referred to in
clauses (a) and (b) of the definition of "Indebtedness".

         "Default" means any Event of Default or any condition, occurrence or
event which, after notice or lapse of time or both, would constitute an Event of
Default.

         "Disbursement Date" is defined in Section 4.4.


                                      -10-

<PAGE>   18


         "Disbursement" means the amount disbursed by the Issuer on a
Disbursement Date.

         "Disclosure Schedule" means the Disclosure Schedule attached hereto as
Schedule I, as it may be amended, supplemented or otherwise modified from time
to time by the Borrower with the written consent of the Administrative Agent and
the Required Lenders.

         "Distribution Payments" is defined in Section 8.2.6.

         "Dollar" and the sign "$" mean lawful money of the United States.

         "Domestic Office" means, relative to any Lender, the office of such
Lender designated as such on Schedule III hereto or designated in a Lender
Assignment Notice or such other office of a Lender (or any successor or assign
of such Lender) within the United States as may be designated from time to time
by notice from such Lender, as the case may be, to each other Person party
hereto.

         "EBITDA" means for any period, the sum, without duplication,

                  (a) Consolidated Net Income for such period, plus

                  (b) Interest Expense for such period, plus

                  (c) all depreciation and amortization of assets (including
         goodwill and other intangible assets) of the Borrower and its
         consolidated Subsidiaries deducted in determining Consolidated Net
         Income for such period, plus (minus)

                  (d) all federal, state, local and foreign income taxes of the
         Borrower and its consolidated Subsidiaries deducted (or credits added)
         in determining Consolidated Net Income for such period, plus (minus)

                  (e) other non-cash items deducted or added in determining
         Consolidated Net Income for such period, including non-cash write-downs
         in connection with ceiling tests as calculated in accordance with GAAP.

         "Effective Date" means the date this Agreement becomes effective
pursuant to Section 11.8.

         "Eligible Assignee" means a Person which either: (a) is primarily
engaged in the business of commercial banking and is (i) a Lender, (ii) a
Subsidiary of a Lender, (iii) a Subsidiary of a Person of which a Lender is a
Subsidiary, or (iv) a Person of which a Lender is a Subsidiary, or (b) is
consented to as an assignee by the Borrower, the Issuer, and the Administrative
Agent, which consents will not be unreasonably


                                      -11-
<PAGE>   19

withheld, and represents that it is either (i) a commercial bank organized under
the laws of the United States, or any state thereof, having a combined capital
and surplus of at least $500,000,000, or (ii) a commercial bank organized under
the laws of any other country which is a member of the Organization for Economic
Development, or a political subdivision of any such country, having a combined
capital and surplus of at least $100,000,000, provided that such bank is acting
through a branch or agency located in the United States and further provided
that Borrower is not required to pay withholding taxes on interest or principal
owed to such bank based on Applicable Law at the time of the assignment.
Notwithstanding the foregoing, after the occurrence of a Default, any assignment
under clause (b) above shall not require the consent of the Borrower, and after
the occurrence of an Event of Default under Section 9.1.1 or 9.1.9, any
assignment under clause (b) above shall not require the consent of the Borrower
and may be made to a commercial bank or any other Person.

         "Engineering Report" means one or more reports, in form and substance
satisfactory to the Administrative Agent and the Required Lenders, prepared at
the sole cost and expense of the Borrower by a petroleum engineer acceptable to
the Administrative Agent in its reasonable business judgment, which shall
evaluate the Proven Reserves and probable reserves attributable to the
Hydrocarbon Interests owned directly by the Borrower and any of its Material
Subsidiaries, as of the immediately preceding January 1 or July 1. Each
Engineering Report shall set forth volumes, a projection of the future rate of
production, present value of the net proceeds of production, estimated costs of
actions described in subsection (a) of the definition of Remedial Action,
operating expenses and Capital Expenditures, in each case based upon updated
economic assumptions (including Hydrocarbon prices, escalation rates, discount
rate assumptions and other general economic assumptions) acceptable to the
Administrative Agent.

         "Environmental Laws" means all Applicable Laws, (including consent
decrees and administrative orders) relating to public health and safety through
protection of the environment.

         "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended, and any successor statute of similar import, together with the
regulations thereunder, in each case as in effect from time to time. References
to sections of ERISA also refer to any successor sections.

         "Event of Default" is defined in Section 9.1.

         "Exchange Act" means the Securities Exchange Act of 1934, and the rules
and regulations of the Commission thereunder.

         "Existing Credit Agreement" is defined in the second recital.




                                      -12-
<PAGE>   20



         "Existing Mortgages" means the mortgages and other security instruments
described on Schedule IV hereto.

         "Federal Funds Effective Rate" means, for any period, a fluctuating
interest rate per annum equal for each day during such period to

                           (a) the weighted average of the rates on overnight
                  federal funds transactions with members of the Federal Reserve
                  System arranged by federal funds brokers, as published for
                  such day (or, if such day is not a Business Day, for the next
                  preceding Business Day) by the Federal Reserve Bank of New
                  York; or

                           (b) if such rate is not so published for any day
                  which is a Business Day, the average of the quotations for
                  such day on such transactions received by the Administrative
                  Agent from three federal funds brokers of recognized standing
                  selected by it.

         Upon written request from the Borrower, the Lender shall advise the
Borrower as to the details of the method of calculation of Federal Funds
Effective Rate then utilized by the Lender.

         "Fee Letter" means that certain letter agreement dated June 4, 1999,
between the Administrative Agent and the Borrower.

         "Fiscal Quarter" means any quarter ending on the last day of March,
June, September or December of a Fiscal Year.

         "Fiscal Year" means any period of twelve consecutive calendar months
ending on December 31; references to a Fiscal Year with a number corresponding
to any calendar year (e.g., "Fiscal Year 1999") refer to the Fiscal Year ending
on the December 31 occurring during such calendar year.

         "F.R.S. Board" means the Board of Governors of the Federal Reserve
System or any successor thereto.

         "Future California" means Future Cal-Tex Corporation, a Texas
corporation, the Subsidiary of the Borrower that owns interests in the South
Coles Levee Unit Property in Kern County, California.

         "Future Nevada" means Future Energy Corporation, a Nevada corporation,
the Subsidiary of the Borrower that is the sole limited partner of each of the
Partnership Subsidiaries, and any successor limited partner or limited partners
of any of the Partnership Subsidiaries.




                                      -13-
<PAGE>   21



         "Future Texas" means Future Petroleum Corporation, a Texas corporation,
the Subsidiary of the Borrower that is the sole general partner of each of the
Partnership Subsidiaries, and any successor general partner or general partners
of any of the Partnership Subsidiaries.

         "GAAP" is defined in Section 1.4.

         "Government Agency" means any federal, state, regional, tribal or local
government or governmental department or other entity charged with the
administration, interpretation or enforcement of any Applicable Law.

         "Guaranties" means the guaranties of the Obligations, executed and
delivered pursuant to Section 6.1.3, Section 6.2.3 or Section 8.1.7,
substantially in the form of Exhibit D, given by each of the Material
Subsidiaries.

         "Hazardous Material" means

                  (a) any "hazardous substance", as defined by CERCLA;

                  (b) any "hazardous waste", as defined by the Resource
         Conservation and Recovery Act, as amended;

                  (c) any petroleum, crude oil or fraction thereof;

                  (d) any hazardous, dangerous or toxic chemical, material,
         waste or substance within the meaning of any Environmental Law;

                  (e) any radioactive material, including any naturally
         occurring radioactive material, and any source, special or by-product
         material as defined in 42 U.S.C. Section 2011 et seq., and any
         amendments or reauthorizations thereof;

                  (f) asbestos-containing materials in any form or condition; or

                  (g) polychlorinated biphenyls in any form or condition.

         "Hedging Agreements" means

                  (a) interest rate swap agreements, basis swap agreements,
         interest rate cap agreements, forward rate agreements, interest rate
         floor agreements, and interest rate collar agreements, and all other
         agreements or arrangements designed to protect such Person against
         fluctuations in interest rates or currency exchange rates, and




                                      -14-
<PAGE>   22



                  (b) forward contracts, options, futures contracts, futures
         options, commodity swaps, commodity options, commodity collars,
         commodity caps, commodity floors, and all other agreements or
         arrangements designed to protect such Person against fluctuations in
         the price of commodities.

         "Hedging Obligations" means, with respect to any Person, all
liabilities (including but not limited to obligations and liabilities arising in
connection with or as a result of early or premature termination of a Hedging
Agreement, whether or not occurring as a result of a default thereunder) of such
Person under Hedging Agreements.

         "Highest Lawful Rate" is defined in Section 11.15.

         "Hydrocarbon Interests" means all rights, titles and interests in and
to oil and gas leases; oil, gas and mineral leases; other Hydrocarbon leases;
mineral interests; mineral servitudes; overriding royalty interests; royalty
interests; net profits interests; production payment interests; and other
similar interests.

         "Hydrocarbons" means, collectively, oil, gas, casinghead gas, drip
gasoline, natural gasoline, condensate, distillate and all other liquid or
gaseous hydrocarbons and related minerals and all products therefrom, in each
case whether in a natural or a processed state.

         "Impermissible Qualification" means, relative to the opinion or
certification of any independent public accountant as to any financial statement
of the Borrower, any qualification or exception to such opinion or certification

                  (a) which is of a "going concern" or similar nature;

                  (b) which relates to the limited scope of examination of
         matters relevant to such financial statement;

                  (c) which relates to the treatment or classification of any
         item in such financial statement and which, as a condition to its
         removal, would require an adjustment to such item the effect of which
         would be to cause the Borrower to be in default of any of its
         obligations under Section 8.2.4; or

                  (d) which relates to possible errors generated by financial
         reporting and related systems due to the Year 2000 Problem.

         "including" means including without limiting the generality of any
description preceding such term, and, for purposes of this Agreement and each
other Loan Document, the parties hereto agree that the rule of ejusdem generis
shall not be applicable to limit a general statement, which is followed by or
referable to an


                                      -15-
<PAGE>   23

enumeration of specific matters, to matters similar to the matters specifically
mentioned.

         "Indebtedness" of any Person means, without duplication:

                  (a) all obligations of such Person for borrowed money and all
         obligations of such Person evidenced by bonds, debentures, notes or
         other similar instruments;

                  (b) all obligations, contingent or otherwise, relative to the
         face amount of all letters of credit, whether or not drawn, and
         banker's acceptances issued for the account of such Person;

                  (c) all other items which, in accordance with GAAP, would be
         included as liabilities on the liability side of the balance sheet of
         such Person as of the date at which Indebtedness is to be determined;

                  (d) net liabilities of such Person under all Hedging
         Obligations;

                  (e) whether or not so included as liabilities in accordance
         with GAAP, all obligations of such Person to pay the deferred purchase
         price of property or services, and indebtedness (excluding prepaid
         interest thereon) secured by a Lien on property owned or being
         purchased by such Person (including indebtedness arising under
         conditional sales or other title retention agreements), whether or not
         such indebtedness shall have been assumed by such Person or is limited
         in recourse;

                  (f) all monetary obligations of such Person with respect to
         Production Payments;

                  (g) all obligations of such Person as lessee under leases
         which have been or should be, in accordance with GAAP, recorded as
         Capitalized Lease Liabilities; and

                  (h) all Contingent Liabilities of such Person.

For all purposes of this Agreement, the Indebtedness of any Person shall include
the Indebtedness of any partnership or joint venture in which such Person is a
general partner or a joint venturer, unless such Indebtedness contains
non-recourse provisions acceptable to the Administrative Agent.

         "Indemnified Liabilities" is defined in Section 11.4.

         "Indemnified Parties" is defined in Section 11.4.



                                      -16-
<PAGE>   24



         "Initial Holders" means Energy Capital Investment Company PLC, an
English investment company, EnCap Energy Capital Fund III-B, L.P., a Texas
limited partnership, BOCP Energy Partners, L.P., a Texas limited partnership,
EnCap Energy Capital Fund III, L.P., a Texas limited partnership, Kayne Anderson
Energy Fund, L.P., a Delaware limited partnership, BancAmerica Capital Investors
SBICI, L.P., a Delaware limited partnership, Eos Partners, L.P., a Delaware
limited partnership, Eos Partners SBIC, L.P., a Delaware limited partnership,
Eos Partners SBIC II, L.P., a Delaware limited partnership, and SGC Partners II
LLC, a Delaware limited liability company.

         "Interest Coverage Ratio" means, (i) at September 30, 1999, for the
Fiscal Quarter ending on such date, (ii) at December 31, 1999, for the two
consecutive Fiscal Quarters ending on such date, (iii) at March 31, 2000, for
the three consecutive Fiscal Quarters ending on such date, and (iv) at the end
of any Fiscal Quarter commencing with the Fiscal Quarter ending June 30, 2000,
for the four consecutive Fiscal Quarters ending on such date, the ratio of (a)
EBITDA of the Borrower and its consolidated Subsidiaries for such Fiscal
Quarter(s) to (b) Interest Expense for such Fiscal Quarter(s).

         "Interest Expense" means, for any period, the consolidated interest
expense of the Borrower and its consolidated Subsidiaries for such period
(including all imputed interest under interest rate swaps constituting Hedging
Agreements and including all capitalized interest, but excluding all fees paid
under Section 3.3), as determined in accordance with GAAP, including that
portion of any Capitalized Lease Liabilities of the Borrower and its
Subsidiaries allocable to interest expense.

         "Interest Period" means, relative to any LIBO Rate Loans, the period
beginning on (and including) the date on which such LIBO Rate Loan is made or
continued as, or converted into, a LIBO Rate Loan pursuant to Section 2.3 or 2.4
and ending on (but excluding) the day which numerically corresponds to such date
one, two, three or six months thereafter (or, if such month has no numerically
corresponding day, on the last Business Day of such month), in each case as the
Borrower may select in its relevant notice pursuant to Section 2.3 or 2.4;
provided, however, that

                  (a) no more than six (6) different Interest Periods may be in
         effect at any time;

                  (b) Interest Periods commencing on the same date for Loans
         comprising part of the same Borrowing shall be of the same duration;

                  (c) if such Interest Period would otherwise end on a day which
         is not a Business Day, such Interest Period shall end on the next
         following Business Day (unless, if such Interest Period applies to LIBO
         Rate Loans, such next following Business Day is the first Business Day
         of another calendar month, in


                                      -17-
<PAGE>   25

which case such Interest Period shall end on the Business Day next preceding
such numerically corresponding day);

                  (d) no Interest Period may end later than the Stated Maturity
         Date; and

                  (e) the Borrower shall select each Interest Period for a
         particular LIBO Rate Loan so as not to require (as reasonably
         foreseeable as possible) a prepayment of such LIBO Rate Loan during
         such Interest Period.

         "Investment" means, relative to any Person,

                  (a) any loan or advance made by such Person to any other
         Person (excluding commission, travel and similar advances to officers
         and employees made in the ordinary course of business and excluding
         prepaid expenses incurred in the ordinary course of business);

                  (b) any Contingent Liability of such Person; and

                  (c) any ownership or similar interest held by such Person in
         any other Person;

provided, however, that (i) Hedging Obligations and (ii) Production Payments
where the Borrower or its Subsidiary is the grantor or transferor thereof shall
not be considered Investments. The amount of any Investment shall be the
original principal or capital amount thereof less all returns of principal or
equity thereon (and without adjustment by reason of the financial condition of
such other Person) and shall, if made by the transfer or exchange of property
other than cash, be deemed to have been made in an original principal or capital
amount equal to the fair market value of such property.

         "Issuance Request" means a request for the issuance of a Letter of
Credit and certificate duly executed by the chief executive, accounting or
financial Authorized Officer of the Borrower, in substantially the form of
Exhibit J attached hereto (with such changes thereto as may be agreed upon from
time to time by the Administrative Agent and the Borrower).

         "Issuer" means Bank of America or any affiliate, unit or agency of Bank
of America which has agreed to issue one or more Letters of Credit at the
request of the Administrative Agent (which shall, at the Borrower's request,
notify the Borrower from time to time of the identity of any such Issuer).

         "Lender Assignment Notice" means a Lender Assignment Notice
substantially in the form of Exhibit G hereto.



                                      -18-
<PAGE>   26



         "Lenders" is defined in the preamble.

         "Letter of Credit" is defined in Section 4.1.

         "Letter of Credit Availability" means, at any time, the lesser of

                  (a) the excess of

                           (i) $5,000,000

         minus
                           (ii) the then Letter of Credit Outstandings,

         or

                  (b) the Commitment Availability at such time.

         "Letter of Credit Outstandings" means, at any time, an amount equal to
the sum of

                  (a) the aggregate Stated Amount at such time of all Letters of
         Credit then outstanding and undrawn (as such aggregate Stated Amount
         shall be adjusted, from time to time, as a result of drawings, the
         issuance of Letters of Credit, or otherwise),

plus

                  (b) the then aggregate amount of all unpaid and outstanding
Reimbursement Obligations.

         "LIBO Office" means, relative to any Lender, the office of such Lender
designated as such on Schedule III hereto or designated in a Lender Assignment
Notice or such other office of a Lender (or any successor or assign of such
Lender) as designated from time to time by notice from such Lender to the
Borrower and the Administrative Agent, whether or not outside the United States,
which shall be making or maintaining LIBO Rate Loans of such Lender hereunder.

         "LIBO Rate" means, with respect to each Interest Period for a LIBO Rate
Loan:

                  (a) the rate of interest per annum (carried out to the fifth
         decimal place) equal to the rate determined by the Administrative Agent
         to be the offered rate that appears on the page of the Telerate Screen
         that displays an average British Bankers Association Interest
         Settlement Rate (such page currently being page number 3750) for
         deposits in Dollars (for delivery on the first day of such Interest
         Period) with a term equivalent to such Interest Period,



                                      -19-
<PAGE>   27


         determined as of approximately 11:00 a.m. (London time) two (2)
         Business Days prior to the first day of such Interest Period;

                  (b) in the event that the rate referenced in the preceding
         clause (a) does not appear on such page or service or such page or
         service shall cease to be available, the rate of interest per annum
         (carried out to the fifth decimal place) equal to the rate determined
         by the Administrative Agent to be the offered rate on such other page
         or other service that displays an average British Bankers Association
         Interest Settlement Rate for deposits in Dollars (for delivery on the
         first day of such Interest Period) with a term equivalent to such
         Interest Period, determined as of approximately 11:00 a.m. (London
         time) two (2) Business Days prior to the first day of such Interest
         Period; or

                  (c) in the event that the rates referenced in the preceding
         clauses (a) and (b) are not available, the rate of interest per annum
         determined by the Administrative Agent as the rate of interest at which
         Dollar deposits (for delivery on the first day of such Interest Period)
         in same day funds in the approximate amount of the applicable LIBO Rate
         Loan and with a term equivalent to such Interest Period would be
         offered by its London Branch to major banks in the offshore Dollar
         market at their request at approximately 11:00 a.m. (London time) two
         (2) Business Days prior to the first day of such Interest Period.

         "LIBO Rate (Reserve Adjusted)" means, relative to any Loan to be made,
continued or maintained as, or converted into, a LIBO Rate Loan for any Interest
Period, a rate per annum (rounded upwards, if necessary, to the nearest 0.01 of
1%) determined pursuant to the following formula:


                                                          LIBO Rate
              LIBO Rate             =          -------------------------------
         (Reserve Adjusted)                    1.00 - LIBOR Reserve Percentage

         The LIBO Rate (Reserve Adjusted) for any Interest Period for LIBO Rate
Loans will be determined by the Administrative Agent on the basis of the LIBOR
Reserve Percentage in effect on, and the applicable rates furnished to and
received by the Administrative Agent, two (2) Business Days before the first day
of such Interest Period.

         "LIBO Rate Loan" means a Loan bearing interest, at all times during an
Interest Period applicable to such Loan, at a fixed rate of interest determined
by reference to the LIBO Rate.

         "LIBOR Reserve Percentage" means, relative to any Interest Period for
LIBO Rate Loans, the reserve percentage (expressed as a decimal and rounded
upward, if necessary, to the nearest 0.01 of 1%) equal to the maximum aggregate
reserve


                                      -20-
<PAGE>   28

requirements (including all basic, emergency, supplemental, marginal and other
reserves and taking into account any transitional adjustments or other scheduled
changes in reserve requirements) specified under regulations issued from time to
time by the F.R.S. Board and then applicable to assets or liabilities consisting
of and including "Eurocurrency Liabilities," as currently defined in Regulation
D of the F.R.S. Board, having a term approximately equal or comparable to such
Interest Period.

         "Lien" means any security interest, mortgage, deed of trust, pledge,
hypothecation, assignment, deposit arrangement, encumbrance, lien (statutory or
otherwise), charge against or interest in Property to secure (i) the payment of
a debt or (ii) the performance of an obligation or other priority or
preferential arrangement of any kind or nature whatsoever in respect of any
Property (including those created by, arising under or evidenced by any
conditional sale or other title retention agreement, the interest of a lessor
under a capital lease, any financing lease having substantially the same
economic effect as any of the foregoing, or the filing of any financing
statement naming the owner of the asset to which such lien relates as debtor,
under the Uniform Commercial Code or any comparable law) and any contingent or
other agreement to provide any of the foregoing.

         "Loans" means the loans provided for by Section 2.1 and shall include
Revolving Credit Loans.

         "Loan Document" means this Agreement, the Notes, the Security
Documents, the Letters of Credit, the Fee Letter and all other agreements
(including Hedging Agreements) relating to this Agreement entered into from time
to time between or among the Borrower (or any or all of its Subsidiaries) and
the Administrative Agent or any Lender (or, with respect to the Hedging
Agreements, any Affiliates of any Lender), and any document delivered by the
Borrower or any of its Subsidiaries in connection with the foregoing.

         "Material Adverse Effect" means with respect to any matter that such
matter

                  (a) could reasonably be expected materially and adversely to
         affect the assets, business, properties, condition (financial or
         otherwise), prospects, or results of operations of the Borrower and its
         Subsidiaries taken as a whole, or the value or condition of the
         Properties of the Borrower and its Subsidiaries taken as a whole, or
         the ability of the Borrower or any other Obligor to perform its
         obligations under any of the Loan Documents, or

                  (b) has been brought by or before any court or arbitrator or
         any governmental body, agency or official, and draws into question or
         otherwise has or reasonably could be expected to have a material
         adverse effect on the validity or enforceability of any material
         provision of any Loan Document


                                      -21-
<PAGE>   29

         against any Obligor party thereto or the rights, remedies and benefits
         available to the Administrative Agent and the Lenders under the Loan
         Documents.

         "Material Contract" means each acquisition agreement, Hydrocarbon
purchase and sale agreement, or similar contract relating to any Hydrocarbon
Interests included in the Mortgaged Properties or other agreement, in each case
as designated by the Administrative Agent.

         "Material Subsidiary" means, at any particular time, any Subsidiary (i)
that has assets included in the Borrowing Base; (ii) that, together with its
Subsidiaries, (a) accounted for more than 5% of the consolidated EBITDA of the
Borrower and its Subsidiaries for the most recently completed Fiscal Quarter
(computed on a retroactive proforma basis with respect to acquired
Subsidiaries), or (b) was the owner of more than 5% of the consolidated assets
of the Borrower and its Subsidiaries at the end of such Fiscal Quarter or, with
respect to acquired or newly formed Subsidiaries, on the date of acquisition or
formation of such acquired Subsidiary, all as shown in the case of (a) and (b)
on the consolidated financial statements of the Borrower and its Subsidiaries
for such Fiscal Quarter or on such acquisition or formation date; or (iii) that
is designated by the Borrower in writing to the Administrative Agent as a
Material Subsidiary.

         "Merger Agreement" means the Agreement and Plan of Merger dated as of
April 26, 1999, by and between Future Petroleum Corporation, a Utah corporation,
and FPT Corporation, a Texas corporation.

          "Mortgage Consents" means all consents required under existing oil and
gas leases or other agreements and Approvals by Government Agencies to the
granting of a Mortgage to the Administrative Agent, and as reasonably determined
by the Administrative Agent with respect to Properties that become Mortgaged
Properties after the Effective Date.

         "Mortgaged Properties" means the Hydrocarbon Interests, Properties and
interests described in and secured by the Mortgages, as such Properties and
interests are from time to time constituted.

         "Mortgages" means the Mortgage, Deed of Trust, Assignment, Security
Agreement, Financing Statement and Fixture Filings executed and delivered
pursuant to Section 6.2.2 or Section 8.1.7, substantially in the form of Exhibit
E hereto, as amended, supplemented, restated or otherwise modified from time to
time, and includes the Existing Mortgages and the New Mortgages.

         "New Mortgages" means Mortgages granted by the Borrower and its
Subsidiaries encumbering the Hydrocarbon Interests and Properties of the
Borrower


                                      -22-
<PAGE>   30

and its Subsidiaries which did not secure the obligations under the Existing
Credit Agreement.

         "Non-Redeemable Stock" means stock issued by the Borrower, provided
that such stock is not considered debt for GAAP, tax law or any other purpose
and provided further that neither the Borrower nor any of its Subsidiaries has
any obligation to redeem or purchase or pay dividends on such stock or to
exchange such stock for, or convert such stock to, any other security (other
than "Non-Redeemable Common Stock"), whether such obligation arises pursuant to
the terms of such stock or any other agreement relating thereto or otherwise and
whether or not such obligation exists in all circumstances or only upon the
occurrence of a particular event or condition or upon the passage of time or
otherwise. "Non-Redeemable Common Stock" means Non-Redeemable Stock that is
common stock issued by the Borrower.

         "Note" means the promissory note of the Borrower payable to the order
of a Lender, in the form of Exhibit A hereto (as such promissory note may be
amended, endorsed or otherwise modified from time to time), evidencing the
aggregate Indebtedness of the Borrower to such Lender resulting from outstanding
Loans, and also means all other promissory notes accepted from time to time in
substitution therefor or renewal thereof.

         "Obligations" means all obligations (monetary or otherwise) of the
Borrower and/or each other Obligor arising under or in connection with this
Agreement, the Notes and each other Loan Document, including without limitation,
all Hedging Obligations arising under Hedging Agreements between the Borrower or
any of its Subsidiaries and a Lender or any Affiliate of a Lender.

         "Obligor" means the Borrower, any of its Subsidiaries, or any other
Person (other than the Administrative Agent or a Lender) obligated under or
otherwise a party to any Loan Document.

         "Oil and Gas Properties" means Hydrocarbon Interests; the Properties
now or hereafter pooled or unitized with Hydrocarbon Interests; all presently
existing or future unitization, pooling agreements and declarations of pooled
units and the units created thereby (including without limitation all units
created under orders, regulations and rules of any Government Agency having
jurisdiction) which may affect all or any portion of the Hydrocarbon Interests;
all operating agreements, joint venture agreements, contracts and other
agreements which relate to any of the Hydrocarbon Interests or the production,
sale, purchase, exchange or processing of Hydrocarbons from or attributable to
such Hydrocarbon Interests; all Hydrocarbons in and under and which may be
produced and saved or attributable to the Hydrocarbon Interests, the lands
covered thereby and all oil in tanks and all rents, issues, profits, proceeds,
products, revenues and other incomes from or attributable to the Hydrocarbon
Interests; all tenements, profits a prendre, hereditaments, appurtenances and



                                      -23-
<PAGE>   31

Properties in anywise appertaining, belonging, affixed or incidental to the
Hydrocarbon Interests, Properties, rights, titles, interests and estates
described or referred to above, including any and all Property, real or
personal, now owned or hereinafter acquired and situated upon, used, held for
use or useful in connection with the operating, working or development of any of
such Hydrocarbon Interests or Property (excluding drilling rigs, automotive
equipment or other personal property which may be on such premises for the
purpose of drilling a well or for other similar temporary uses) and including
any and all oil wells, gas wells, water wells, injection wells or other wells,
buildings, structures, fuel separators, liquid extraction plants, plant
compressors, pumps, pumping units, field gathering systems, tanks and tank
batteries, fixtures, valves, fittings, machinery and parts, engines, boilers,
meters, apparatus, equipment, appliances, tools, implements, cables, wires,
towers, casing, tubing and rods, surface leases, rights-of-way, easements and
servitudes together with all additions, substitutions, replacements, accessions
and attachments to any and all of the foregoing.

         "Old FPC" is defined in the second recital.

         "Organic Document" means, relative to any corporate Obligor, its
certificate of incorporation, its by-laws and all shareholder agreements, voting
trusts and similar arrangements applicable to any of its authorized shares of
Capital Stock, and, relative to any partnership Obligor, its partnership
agreement.

         "Participant" is defined in Section 11.11.2.

         "Partners" means the general and limited partners of the Partnership
Subsidiaries, being Future Texas as the general partner, and Future Nevada as
the limited partner, and any successor general partner or limited partner of any
Partnership Subsidiary.

         "Partnership Subsidiary" means any direct or indirect Subsidiary of the
Borrower that is a limited partnership, including Future Acquisition 1995, Ltd.,
a Texas limited partnership, BMC Development No. 1 Limited Partnership, a Texas
limited partnership and NCI Shawnee Limited Partnership, a Texas limited
partnership.

         "PBGC" means the Pension Benefit Guaranty Corporation and any entity
succeeding to any or all of its functions under ERISA.

         "Pension Plan" means a "pension plan", as such term is defined in
section 3(2) of ERISA, which is subject to Title IV of ERISA (other than a
multiemployer plan as defined in section 4001(a)(3) of ERISA), and to which the
Borrower or any corporation, trade or business that is, along with the Borrower,
a member of a Controlled Group, may have liability, including any liability by
reason of having been a substantial employer within the meaning of section 4063
of ERISA at any time


                                      -24-
<PAGE>   32

during the preceding five years, or by reason of being deemed to be a
contributing sponsor under section 4069 of ERISA.

         "Percentage" means, relative to any Lender, the percentage set forth on
Schedule III hereto, as such percentage may be adjusted from time to time
pursuant to Lender Assignment Notice(s) executed by such Lender and its Assignee
Lender(s) and delivered pursuant to Section 11.11.

         "Person" means any natural person, corporation, partnership, limited
liability company, firm, association, trust, Government Agency or any other
entity, whether acting in an individual, fiduciary or other capacity.

         "Plan" means any Pension Plan or Welfare Plan.

         "Pledge Agreements" means the Pledge Agreements executed and delivered
pursuant to Section 6.1.4, Section 6.2.8 or Section 8.1.7, substantially in the
form of Exhibit F-1 (from the Borrower) or F-2 (from each of the Partners)
hereto, as applicable, as amended, supplemented, restated or otherwise modified
from time to time.

         "Principal Shareholders" means each of the Initial Holders, Thomas D.
Barrow and Tim J. Goff.

         "Principal Shareholder Affiliate" means any Person which, directly or
indirectly, controls, is controlled by or is under common control with a
Principal Shareholder (excluding any trustee under, or any committee with
responsibility for administering, any Plan). A Person shall be deemed to be
"controlled by" any other Person if such other Person possesses, directly or
indirectly, power

                  (a) to vote 50% or more of the securities (on a fully diluted
         basis) having ordinary voting power for the election of directors or
         managing general partners; or

                  (b) to direct or cause the direction of the management and
         policies of such Person whether by contract or otherwise.

         "Proceeds Account" is defined in Section 3.4.

         "Production Payments" means the grant or transfer to any Person of a
production payment (whether volumetric or dollar denominated) or similar
royalty, overriding royalty, net profits interest or other similar interest in
Oil and Gas Properties, or the right to receive all or a portion of the
production or the proceeds from the sale of production attributable to such Oil
and Gas Properties where the holder of such interest has recourse solely to such
interest and the grantor or transferor thereof has



                                      -25-
<PAGE>   33

an express contractual obligation to produce and sell Hydrocarbons from such Oil
and Gas Properties, or to cause such Oil and Gas Properties to be so operated
and maintained, in each case in a reasonably prudent manner.

         "Property" means any interest in any kind of property or asset, whether
real, personal or mixed, or tangible or intangible.

         "Proven Reserves" means collectively, "proved oil and gas reserves,"
"proved developed producing oil and gas reserves," "proved developed
non-producing oil and gas reserves" (consisting of proved developed shut-in oil
and gas reserves and proved developed behind pipe oil and gas reserves), and
"proved undeveloped oil and gas reserves," as such terms are defined by the U.S.
Securities and Exchange Commission in its standards and guidelines.

         "Quarterly Payment Date" means, commencing December 31, 1999, the last
Business Day of each March, June, September and December.

         "Reimbursement Obligation" is defined in Section 4.5.

         "Release" means a "release," as such term is defined in CERCLA.

         "Remedial Action" means any action under Environmental Laws required to
(a) clean up, remove, treat, dispose of, abate, or in any other way address
pollutants (including Hazardous Materials) in the environment, (b) prevent the
Release or threat of a Release or minimize the further Release of pollutants, or
(c) investigate and determine if a remedial response is needed and to design
such a response and any post-remedial investigation, monitoring, operation, and
maintenance and care.

         "Requested Redetermination" is defined in Section 2.7.

         "Required Lenders" means, at any time, Lenders holding, in the
aggregate, at least 66-2/3% of the then outstanding principal amount of all
Loans or, if no such principal amount is outstanding, Lenders having Percentages
aggregating at least 66-2/3% of the Total Commitment.

         "Resource Conservation and Recovery Act" means the Resource
Conservation and Recovery Act, 42 U.S.C. Section 6901, et seq., as in effect
from time to time.

         "Restricted Payment Tests" means compliance with each of the following
restrictions (both before and immediately after giving effect to the applicable
Distribution Payment):

                  (a) Tangible Net Worth shall not be less than the sum of (i)
         $44,574,521 plus (ii) fifty percent (50%) of consolidated net income of
         the


                                      -26-
<PAGE>   34

         Borrower and its Subsidiaries (excluding the effects of consolidated
         net losses), for each Fiscal Quarter beginning on or after July 1,
         1999, plus (iii) one-hundred percent (100%) of the net proceeds of any
         Non-Redeemable Stock offering by the Borrower or any of its
         Subsidiaries at any time after the Effective Date;

                  (b)      the Current Ratio shall be not less than 1.0:1.0;

                  (c)      the Interest Coverage Ratio shall be not less than
                           3.0:1.0;

                  (d)      there shall exist no Borrowing Base Deficiency;

                  (e)      no Default shall have occurred and be continuing; and

                  (f)      the Lenders shall have consented in writing to such
                           Distribution Payment with respect to the Series B
                           Preferred.

         "Revolving Credit Loans" means the loans provided for by Section 2.1.

         "Scheduled Redetermination" is defined in Section 2.7.

         "Security Agreement" means the Amended and Restated Security Agreement
executed and delivered pursuant to Section 6.1.5, Section 6.2.6 or Section 8.1.7
substantially in the form of Exhibit B, as amended, supplemented, restated or
otherwise modified from time to time pursuant to which the Borrower or its
Subsidiaries, as the case may be, pledges to the Administrative Agent as
security for the Obligations the Material Contracts and the Borrower's or its
Subsidiaries', as the case may be, bank accounts and intercompany accounts and
loans receivable.

         "Security Documents" means, collectively, (a) the Guaranties, (b) the
Pledge Agreements, (c) the Mortgages, (d) the Security Agreements, (e) the
Consents and (f) the Mortgage Consents, together with any exhibits, schedules
and other attachments to such documents and any financing statements related
thereto, as such documents, exhibits, schedules, attachments or financing
statements may be, from time to time, amended, supplemented, restated or
otherwise modified.

         "Series B Preferred" means that portion of the Capital Stock of the
Borrower known as the "Cumulative Redeemable Preferred Stock, Series B" issued
by the Borrower to the Initial Holders pursuant to the Stock Purchase Agreement.

         "Shareholders' Agreement" means the Second Amended and Restated
Shareholders' Agreement dated as of May 14, 1999, among the Borrower, B. Carl
Price, a Texas resident, Don Wm. Reynolds, a Texas resident, Energy Capital
Investment Company PLC, an English investment company, EnCap Equity 1994 Limited
Partnership, a Texas limited partnership, Bargo Energy Resources, Ltd., a


                                      -27-
<PAGE>   35

Texas limited partnership, TJG Investments, Inc., a Texas corporation, Bargo
Energy Company, a Texas general partnership, Tim J. Goff, Thomas Barrow, James
E. Sowell, Bargo Operating Company, Inc., a Texas corporation, EnCap Energy
Capital Fund III-B, L.P., a Texas limited partnership, BOCP Energy Partners,
L.P., a Texas limited partnership, EnCap Energy Capital Fund III, L.P., a Texas
limited partnership, Kayne Anderson Energy Fund, L.P., a Delaware limited
partnership, Banc America Capital Investors SBIC I, L.P., a Delaware limited
partnership, Eos Partners, L.P., a Delaware limited partnership, Eos Partners
SBIC, L.P., a Delaware limited partnership, Eos Partners SBIC II, L.P., a
Delaware limited partnership, and SGC Capital Partners II LLC, a Delaware
limited liability company, as the same may be, from time to time, amended,
supplemented, restated or otherwise modified.

         "Stated Amount" of each Letter of Credit means the face amount or the
"Stated Amount" of such Letter of Credit (as defined therein).

         "Stated Expiry Date" is defined in Section 4.1.

         "Stated Maturity Date" means September 30, 2002.

         "Stock Purchase Agreement" means the Stock Purchase Agreement dated as
of May 14, 1999, among the Borrower and Energy Capital Investment Company PLC,
an English investment company, EnCap Energy Capital Fund III-B, L.P., a Texas
limited partnership, BOCP Energy Partners, L.P., a Texas limited partnership,
EnCap Energy Capital Fund III, L.P., a Texas limited partnership, Kayne Anderson
Energy Fund, L.P., a Delaware limited partnership, BancAmerica Capital Investors
SBIC I, L.P., a Delaware limited partnership, Eos Partners, L.P., a Delaware
limited partnership, Eos Partners SBIC, L.P., a Delaware limited partnership,
Eos Partners SBIC II, L.P., a Delaware limited partnership, and SGC Partners II
LLC, a Delaware limited liability company as the same may be, from time to time,
amended, supplemented, restated or otherwise modified.

         "Subsidiary" means, with respect to any Person, (a) any corporation of
which more than 50% of the outstanding Capital Stock having ordinary voting
power to elect a majority of the board of directors of such corporation
(irrespective of whether at the time Capital Stock of any other class or classes
of such corporation shall or might have voting power upon the occurrence of any
contingency) is at the time directly or indirectly owned by such Person, (b) any
partnership, limited liability company, association or firm of which more than
50% of the equity interest or voting power is at the time directly or indirectly
owned by such Person, by such Person and one or more other Subsidiaries of such
Person, or by one or more other Subsidiaries of such Person or (c) any
partnership in which such Person is a general partner; provided that
associations, joint ventures or other relationships (i) which are established
pursuant to a standard form AAPL Form 610 operating agreement or similar
agreement and which are partnerships for purposes of income taxation only, (ii)
which are not


                                      -28-
<PAGE>   36

corporations, trusts, limited liability companies or partnerships (or subject to
the Uniform Partnership Act) under applicable state law, and (iii) whose
businesses are limited to the exploration, development and operation of oil, gas
or mineral properties and interests owned directly by the parties in such
associations, joint ventures or relationships, shall not be deemed to be
"Subsidiaries" of such Person.

         "Surety Instruments" means all letters of credit (including standby and
commercial), banker's acceptances, bank guaranties, shipside bonds, surety bonds
and similar instruments.

         "Tangible Net Worth" means the consolidated net worth of the Borrower
and its Subsidiaries (including therein the net amount received by the Borrower
in respect of the issuance of the Series B Preferred) after subtracting
therefrom the aggregate amount of any intangible assets of the Borrower and its
Subsidiaries, including goodwill, franchises, licenses, patents, trademarks,
trade names, copyrights, service marks and brand names.

         "Taxes" is defined in Section 5.6.

         "Total Commitment" means $100,000,000.

         "type" means, relative to any Loan, the portion thereof, if any, being
maintained as a Base Rate Loan or a LIBO Rate Loan.

         "United States" or "U.S." means the United States of America, its fifty
States and the District of Columbia.

         "Unsecured Indemnity" means that certain Amended and Restated Hazardous
Materials Undertaking and Unsecured Indemnity dated as of September 30, 1999,
from Future California, in favor of the Administrative Agent, as amended.

         "Welfare Plan" means a "welfare plan", as such term is defined in
section 3(1) of ERISA.

         "Year 2000 Compliant" is defined in Section 7.20.

         "Year 2000 Problem" is defined in Section 7.20.

         SECTION 1.2. USE OF DEFINED TERMS. Unless otherwise defined or the
context otherwise requires, terms for which meanings are provided in this
Agreement shall have such meanings when used in the Disclosure Schedule and in
each Note, Borrowing Request, Continuation/Conversion Notice, notice and other
communication or other Loan Document delivered from time to time in connection
with this Agreement or any other Loan Document.



                                      -29-
<PAGE>   37



         SECTION 1.3. CROSS-REFERENCES. Unless otherwise specified, references
in this Agreement and in each other Loan Document to any Article or Section are
references to such Article or Section of this Agreement or such other Loan
Document, as the case may be, and, unless otherwise specified, references in any
Article, Section or definition to any clause are references to such clause of
such Article, Section or definition.

                  (a) The meanings of defined terms are equally applicable to
         the singular and plural forms of the defined terms.

                  (b) The words "hereof," "herein," "hereunder" and similar
         words refer to this Agreement as a whole and not to any particular
         provision of this Agreement; and subsection, Section, Schedule and
         Exhibit references are to this Agreement or such other Loan Document,
         as the case may be, and, unless otherwise specified, references in any
         Article, Section or definition to any clause are references to such
         clause of such Article, Section or definition.

                  (c) (i) The term "documents" includes any and all instruments,
         documents, agreements, certificates, indentures, notices and other
         writings, however evidenced.

                      (ii) In the computation of periods of time from a
         specified date to a later specified date, the word "from" means "from
         and including"; the words "to" and "until" each mean "to but
         excluding," and the word "through" means "to and including."

                      (iii) The term "property" includes any kind of
         property or asset, real, personal or mixed, tangible or intangible.

                  (d) Unless otherwise expressly provided herein, (i) references
         to agreements (including this Agreement) and other contractual
         instruments shall be deemed to include all subsequent amendments and
         other modifications thereto, but only to the extent such amendments and
         other modifications are not prohibited by the terms of any Loan
         Document, and (ii) references to any statute or regulation are to be
         construed as including all statutory and regulatory provisions
         consolidating, amending, replacing, supplementing or interpreting the
         statute or regulation.

                  (e) This Agreement and other Loan Documents may use several
         different limitations, tests or measurements to regulate the same or
         similar matters. All such limitations, tests and measurements are
         cumulative and shall each be performed in accordance with their terms.
         Unless otherwise expressly provided, any reference to any action of the
         Administrative Agent or the


                                      -30-
<PAGE>   38

         Lenders by way of consent, approval or waiver shall be deemed modified
         by the phrase "in its sole discretion" or "in their sole discretion,"
         as applicable.

                  (f) This Agreement and the other Loan Documents are the result
         of negotiations among and have been reviewed by counsel to the Lenders,
         the Borrower and the other parties, and are the products of all
         parties. Accordingly, they shall not be construed against the Lenders
         merely because of the Lenders' involvement in their preparation.

         SECTION 1.4. ACCOUNTING AND FINANCIAL DETERMINATIONS. Unless otherwise
specified, all accounting terms used herein or in any other Loan Document shall
be interpreted, all accounting determinations and computations hereunder or
thereunder (including under Section 8.2.4) shall be made, and all financial
statements required to be delivered hereunder or thereunder shall be prepared in
accordance with, those generally accepted accounting principles ("GAAP") applied
in the preparation of the financial statements referred to in Section 7.7.


                                   ARTICLE II

                   COMMITMENTS, BORROWING PROCEDURES AND NOTE

         SECTION 2.1. COMMITMENTS.

         SECTION 2.1.1. REVOLVING CREDIT LOANS. On the terms and subject to the
conditions of this Agreement (including Article VI), each Lender severally
agrees to make loans (relative to such Lender, its "Revolving Credit Loans") to
the Borrower equal to such Lender's Percentage of the aggregate amount of the
Borrowing of Revolving Credit Loans requested by the Borrower to be made on such
day described in this Section 2.1.1. On the terms and subject to the conditions
hereof, the Borrower may from time to time borrow, prepay and reborrow Revolving
Credit Loans. From time to time on any Business Day during the period from and
after the Effective Date to but not including the Commitment Termination Date,
each Lender will make Revolving Credit Loans to the Borrower equal to such
Lender's Percentage of the amount of the Revolving Credit Loans requested by the
Borrower to be made on such day in the applicable Borrowing Request therefor.
The Borrower acknowledges that, as of the Effective Date, the aggregate
outstanding amount of all loans under the Existing Credit Agreement is
$19,605,000.00. On the Effective Date, each of the Lenders other than Bank of
America shall be deemed to have purchased from Bank of America such Lender's
Percentage share of the outstanding principal amount of such loans and shall pay
to Bank of America an amount equal to the product of its Percentage multiplied
by $19,605,000.00.



                                      -31-
<PAGE>   39

         SECTION 2.1.2. LETTERS OF CREDIT. From time to time on any Business
Day prior to the Commitment Termination Date, each Issuer will issue, and each
Lender severally will participate in, the Letters of Credit, in accordance with
Article IV.

         SECTION 2.1.3. LENDERS NOT REQUIRED TO MAKE LOANS UNDER CERTAIN
CIRCUMSTANCES. No Lender shall be permitted or required to

                  (a) make any Loan if, after giving effect thereto

                           (i) the aggregate outstanding principal amount of all
                  Loans of all Lenders, together with all the Letter of Credit
                  Outstandings, would exceed the Commitment Amount; or

                           (ii) the aggregate outstanding principal amount of
                  all Loans of such Lender, together with its Percentage of all
                  Letter of Credit Outstandings, would exceed such Lender's
                  Percentage of the Commitment Amount; or

                           (iii) a Borrowing Base Deficiency would exist; or

                  (b) issue (in the case of any Issuer) or participate in (in
         the case of any Lender) any Letter of Credit if, after giving effect
         thereto

                           (i) all Letter of Credit Outstandings together with
                  the aggregate outstanding principal amount of all Loans of all
                  Lenders would exceed the Commitment Amount; or

                           (ii) such Lender's Percentage of all Letter of Credit
                  Outstandings together with the aggregate outstanding principal
                  amount of all Loans of such Lender would exceed such Lender's
                  Percentage of the Commitment Amount; or

                           (iii) a Borrowing Base Deficiency would exist; or

                           (iv) all Letter of Credit Outstandings would exceed
                  $5,000,000.

         SECTION 2.2. REDUCTION OF COMMITMENT AMOUNT. The Commitment Amount is
subject to reduction from time to time pursuant to this Section 2.2.

         SECTION 2.2.1. OPTIONAL. The Borrower may, from time to time on any
Business Day, voluntarily reduce the Total Commitment; provided, however, that
all such reductions shall require at least three (3) Business Days' prior notice
to the Administrative Agent and be permanent, and any partial reduction of the
Commitment


                                      -32-
<PAGE>   40

Amount shall be in a minimum amount of $5,000,000 and in an integral multiple of
$1,000,000.

         SECTION 2.2.2. MANDATORY. On any Commitment Termination Date, the
Commitment Amount shall, without any further action, automatically and
permanently be reduced to zero.

         SECTION 2.3. BORROWING PROCEDURE. By delivering a Borrowing Request to
the Administrative Agent on or before 10:00 a.m. (Dallas time) on a Business
Day, the Borrower may from time to time irrevocably request, on (i) such
Business Day, in the case of Base Rate Loans and (ii) not less than three (3)
nor more than five (5) Business Days' notice in the case of LIBO Rate Loans,
that a Borrowing be made in a minimum amount of $1,000,000 and an integral
multiple of $500,000, or in the unused amount of the Commitment Amount. On the
terms and subject to the conditions of this Agreement, each Borrowing shall be
comprised of the type of Loans and shall be made on the Business Day specified
in such Borrowing Request. On or before 1:00 p.m. (Dallas time) on such Business
Day each Lender shall deposit with the Administrative Agent same day funds in an
amount equal to such Lender's Percentage of the requested Borrowing. Such
deposit will be made to an account which the Administrative Agent shall specify
from time to time by notice to the Lenders. To the extent funds are received
from the Lenders, the Administrative Agent shall make such funds available to
the Borrower by wire transfer to the accounts the Borrower shall have specified
in its Borrowing Request. No Lender's obligation to make any Loan shall be
affected by any other Lender's failure to make any Loan.

         SECTION 2.4. CONTINUATION AND CONVERSION ELECTIONS. By delivering a
Continuation/Conversion Notice to the Administrative Agent on or before 10:00
a.m. (Dallas time) on a Business Day, the Borrower may from time to time
irrevocably elect, on not less than three (3) nor more than five (5) Business
Days' notice that all, or any portion in an aggregate minimum amount of
$1,000,000 and an integral multiple of $500,000, of any Loans be, in the case of
Base Rate Loans, converted into LIBO Rate Loans or, in the case of LIBO Rate
Loans, be converted into a Base Rate Loan or continued as a LIBO Rate Loan (in
the absence of delivery of a Continuation/Conversion Notice with respect to any
LIBO Rate Loan at least three (3) Business Days before the last day of the then
current Interest Period with respect thereto, such LIBO Rate Loan shall, on such
last day, automatically convert to a Base Rate Loan); provided, however, that
(a) each such conversion or continuation shall be pro rated among the applicable
outstanding Loans of all Lenders, and (b) no portion of the outstanding
principal amount of any Loan may be continued as, or be converted into, LIBO
Rate Loans when any Default has occurred and is continuing.

         SECTION 2.5. FUNDING. Each Lender may, if it so elects, fulfill its
obligation to make, continue or convert LIBO Rate Loans hereunder by causing one
of its foreign branches or Affiliates (or an international banking facility
created by such Lender) to


                                      -33-
<PAGE>   41

make or maintain such LIBO Rate Loan; provided, however, that such LIBO Rate
Loan shall nonetheless be deemed to have been made and to be held by such
Lender, and the obligation of the Borrower to repay such LIBO Rate Loan shall
nevertheless be to such Lender for the account of such foreign branch, Affiliate
or international banking facility. In addition, the Borrower hereby consents and
agrees that, for purposes of any determination to be made for purposes of
Section 5.1, 5.2, 5.3 or 5.4, it shall be conclusively assumed that each Lender
elected to fund all LIBO Rate Loans by purchasing Dollar deposits in its LIBO
Office's interbank Eurodollar market.

         SECTION 2.6. LOAN ACCOUNTS AND NOTES.

                  (a) The Loans made by the Lenders shall be evidenced by one or
         more loan accounts or records maintained by each Lender in the ordinary
         course of business. The loan accounts or records maintained by such
         Lender shall be rebuttable presumptive evidence of the amount of the
         Loans made by such Lender to the Borrower and the interest and payments
         thereon. Any failure so to record or any error in doing so shall not,
         however, limit or otherwise affect the obligation of the Borrower
         hereunder to pay any amount owing with respect to the Loans.

                  (b) Each Lender's Loans shall also be evidenced by a Note
         payable to the order of such Lender in a maximum principal amount equal
         to such Lender's Percentage of the Total Commitment. The Borrower
         hereby irrevocably authorizes each Lender to make (or cause to be made)
         appropriate notations on the grid attached to such Lender's Note (or on
         any continuation of such grid) or in other books and records maintained
         by such Lender, which notations, if made, shall evidence, inter alia,
         the date of, the outstanding principal of, and the interest rate and
         Interest Period applicable to the Loans evidenced thereby (the Borrower
         may from time to time reasonably request a copy of such grid). Such
         notations shall be conclusive and binding on the Borrower absent
         manifest error; provided, however, that the failure of any Lender to
         make any such notations shall not limit or otherwise affect any
         Obligations of the Borrower or any other Obligor.

                  (c) The Borrower acknowledges that the Notes delivered to the
         Lenders as of the Effective Date amend, restate and renew the
         promissory notes given by the Borrower under the Existing Credit
         Agreement, and nothing in this Agreement or the other Loan Documents is
         intended to novate or discharge the indebtedness of the Borrower or the
         other Obligors under the Existing Credit Agreement.




                                      -34-
<PAGE>   42



         SECTION 2.7. BORROWING BASE REDETERMINATION.

                  (a) Within fifteen (15) Business Days after receipt of the
         Engineering Report required to be delivered semi-annually, commencing
         with the Engineering Report required to be delivered not later than
         September 1, 1999, the Administrative Agent shall, based upon a review
         of such Engineering Report, propose to all of the Lenders a
         redetermined Borrowing Base. All of the Lenders shall, within ten (10)
         Business Days after receipt from the Administrative Agent of a proposal
         for a redetermined Borrowing Base, approve a redetermined Borrowing
         Base either (i) at the amount proposed by the Administrative Agent, or
         (ii) such other amount as all of the Lenders may approve, as provided
         in Section 2.7(d). Upon approval of a redetermined Borrowing Base, the
         Administrative Agent shall notify the Borrower in writing of the
         Borrowing Base determined by all of the Lenders on the basis of such
         Engineering Report. Each such determination is herein called a
         "Scheduled Redetermination". Each Scheduled Redetermination shall be
         effective as of (i) April 1st (with respect to Engineering Reports
         effective January 1st), and (ii) October 1st (with respect to
         Engineering Reports effective July 1st) upon notification of the
         Borrower by the Administrative Agent.

                  (b) The Administrative Agent (on behalf of the Lenders) or the
         Borrower may, from time to time (but not more frequently than (i) one
         time during any calendar year by the Lenders, (ii) one time during any
         calendar year by the Borrower and (iii) in connection with any
         acquisition by the Borrower or its Subsidiaries of Oil and Gas
         Properties having a purchase price of $25 million or more), request a
         redetermination (at the sole cost and expense of the Borrower) of the
         Borrowing Base based upon the most recently received Engineering
         Report. Each such requested redetermination is herein called a
         "Requested Redetermination." The Lenders shall establish the
         redetermined Borrowing Base, and the Administrative Agent shall notify
         the Borrower in writing of the Borrowing Base determined by the
         Lenders, not later than thirty (30) days after such Requested
         Redetermination by the Borrower. Each Requested Redetermination shall
         be effective when the Borrower is notified of the amount of the
         redetermined Borrowing Base by the Administrative Agent.

                  (c) Within five (5) Business Days after receipt of a notice
         from the Administrative Agent of the amount of a redetermined Borrowing
         Base, the Borrower shall by notice to the Administrative Agent either
         accept such amount as the new Borrowing Base or reduce the Borrowing
         Base from the amount proposed by the Administrative Agent to any lesser
         amount. Failure by the Borrower to take either such action within such
         five (5) Business Day period shall be deemed acceptance of such amount
         as the Borrowing Base. Upon any such acceptance or deemed acceptance by
         the Borrower, a new Borrowing Base in the amount accepted shall take
         effect on such date (herein called a


                                      -35-
<PAGE>   43

         "Borrowing Base Determination Date") and shall remain in effect until
         but not including the next Borrowing Base Determination Date. Upon any
         such reduction by the Borrower, a new Borrowing Base in the reduced
         amount specified by the Borrower shall take effect on such date (herein
         also called a "Borrowing Base Determination Date") and shall remain in
         effect until but not including the next Borrowing Base Determination
         Date.

                  (d) Each determination or redetermination of the Borrowing
         Base pursuant to this Section 2.7 and Section 3.1.2 shall be made by
         all of the Lenders and the Administrative Agent, in the exercise of
         their reasonable discretion and in accordance with their customary and
         prudent standards for oil and gas lending and credit transactions as
         they exist at such time (which standards may change from time to time).
         In each case where the Administrative Agent shall propose a
         redetermined Borrowing Base, any Lender who objects to the proposed
         Borrowing Base shall, within the prescribed time period, simultaneously
         notify the Administrative Agent of the amount of the redetermined
         Borrowing Base that it believes appropriate, and such objecting Lender
         shall be deemed to have approved any Borrowing Base which is less than
         the Borrowing Base it believes is appropriate. Any Lender that does not
         object to the redetermined Borrowing Base proposed by the
         Administrative Agent within the prescribed time period shall be deemed
         to have approved the redetermined Borrowing Base proposed by the
         Administrative Agent. In the event that the Lenders do not so approve
         the redetermined Borrowing Base as proposed by the Administrative
         Agent, the Administrative Agent shall consult with each Lender that has
         so objected and thereafter establish a redetermined Borrowing Base that
         is so approved by the Lenders.

                  (e) The Borrowing Base is also subject to adjustment as
         provided for in Section 3.1.2.

         SECTION 2.8. PURPOSES. The Borrower shall apply the proceeds of each
Loan only

                  (a) to refinance all Indebtedness under the Existing Credit
                      Agreement; and

                  (b) for Capital Expenditures, working capital and general
                      corporate purposes of the Borrower and its Material
                      Subsidiaries.



                                          -36-
<PAGE>   44

                                   ARTICLE III

                   REPAYMENTS, PREPAYMENTS, INTEREST AND FEES


         SECTION 3.1. REPAYMENTS AND PREPAYMENTS AND CERTAIN BORROWING BASE
MATTERS. The Borrower shall repay the unpaid principal amount of the Loans as
set forth in this Section 3.1.

         SECTION 3.1.1. REPAYMENTS AND PREPAYMENTS. The Borrower shall repay in
full the unpaid principal amount of each Revolving Credit Loan, and each
Revolving Credit Loan shall mature, on the Stated Maturity Date. Prior thereto,
the Borrower

                  (a) may, from time to time on any Business Day, make a
         voluntary prepayment, in whole or in part, of the outstanding principal
         amount of any Loans; provided, however, that

                           (i) in the case of a prepayment of a LIBO Rate Loan,
                  all such voluntary prepayments shall require at least three
                  (3) but no more than five (5) Business Days' prior written
                  notice to the Administrative Agent (which notice is
                  irrevocable);

                           (ii) any such prepayment shall be made pro rata among
                  Loans of the same type and, if applicable, having the same
                  Interest Period; and

                           (iii) all such voluntary partial prepayments shall be
                  in an aggregate minimum amount of $250,000 and an integral
                  multiple of $50,000;

                  (b) shall, on each date when any reduction in the Commitment
         Amount shall become effective, including pursuant to Section 2.2, make
         a mandatory prepayment (which shall be applied (or held for
         application, as the case may be) by each Lender first to the payment of
         the aggregate unpaid principal amount of those Loans then outstanding
         and then to the payment of the then Letter of Credit Outstandings)
         equal to the excess, if any, of the aggregate outstanding principal
         amount of all Loans and Letter of Credit Outstandings over the
         Commitment Amount as so reduced;

                  (c) shall make prepayments as specified in Section 3.1.2; and

                  (d) shall, immediately upon any acceleration of the Loans
         pursuant to Section 9.2 or Section 9.3, repay all Loans, unless,
         pursuant to Section 9.3, only a portion of all Loans is so accelerated.

Each payment or prepayment of any Loans made pursuant to this Section shall be
without premium or penalty except as may be required by Section 5.4, and shall
be applied, to the extent of such prepayment. No voluntary prepayment of
principal of any Loans or any prepayment pursuant to the preceding clause (c)
shall cause a reduction in any Commitment Amount.



                                      -37-
<PAGE>   45



         SECTION 3.1.2.  BORROWING BASE DEFICIENCIES AND ASSET SALES.

                  (a) Upon the occurrence of a Borrowing Base Deficiency, the
         Administrative Agent may (and, at the direction of the Required
         Lenders, shall) notify the Borrower of such Borrowing Base Deficiency.
         Within ten (10) days from and after the Borrowing Base Deficiency
         Notification Date, the Borrower shall notify the Administrative Agent
         that it shall, at its election, take one of the following actions
         within ninety (90) days after the occurrence of such Borrowing Base
         Deficiency:

                           (i) it will execute and deliver to the Administrative
                  Agent supplemental or additional Security Documents, in form
                  and substance satisfactory to the Administrative Agent and its
                  counsel, securing payment of the Notes and the other
                  Obligations and covering additional Oil and Gas Properties
                  directly owned by the Borrower or one or more of its Material
                  Subsidiaries which are not then covered by any Security
                  Document and which are of a type and nature, and having a
                  value (as determined by the Administrative Agent and the
                  Required Lenders, and in addition to other Oil and Gas
                  Properties already subject to a Mortgage) and/or other
                  collateral of a type, in an amount, and in all other respects
                  satisfactory to the Administrative Agent and the Required
                  Lenders, sufficient to eliminate the Borrowing Base
                  Deficiency, all as more particularly described in Section
                  8.1.7(a) and (b), or

                           (ii) it will pay an amount in respect of the
                  Obligations (which shall be applied (or held for application,
                  as the case may be) by the Administrative Agent to the payment
                  of the aggregate unpaid principal amount of those Loans then
                  outstanding and then Letter of Credit Outstandings) in an
                  aggregate principal amount sufficient to eliminate such
                  Borrowing Base Deficiency.

         If the Borrower shall elect to execute and deliver supplemental or
         additional Security Documents to the Administrative Agent pursuant to
         clause (i), it shall provide the Administrative Agent and each Lender
         with descriptions of the additional assets to be collaterally assigned
         (together with current valuations, Engineering Reports, Security
         Documents described in clause (i) and title evidence applicable
         thereto, each of which shall be in form and substance satisfactory to
         the Administrative Agent) within thirty (30) days after the Borrowing
         Base Deficiency Notification Date. Such supplemental or additional
         Security Documents shall be subject to the terms of Section 8.1.7. If
         the Borrower fails to take either of the actions described above within
         such ten (10)-day period, then without any necessity for notice to the
         Borrower or any other person, the Borrower shall become obligated
         immediately to pay


                                      -38-
<PAGE>   46

         Obligations in an aggregate principal amount equal to the applicable
         Borrowing Base Deficiency.

                  (b) If the Borrower or any Subsidiary sells, transfers or
         otherwise disposes of Properties included in the most recent
         determination of the Borrowing Base and that have an aggregate sales
         price in excess of three percent (3%) of the then current Borrowing
         Base during the period from the effective date of the most recent
         Borrowing Base Determination until the effective date of the next
         Borrowing Base Determination, the Borrowing Base shall be immediately
         reduced, until the effective date of the next Borrowing Base
         Determination, by an amount as reasonably determined by the
         Administrative Agent and approved by the Required Lenders.

         If such reduction shall result in a Borrowing Base Deficiency, then in
         lieu of the provisions of clause (a) of Section 3.1.2, the Borrower
         shall immediately make a payment with respect to the Obligations in an
         amount equal to such Borrowing Base Deficiency. In addition to and
         cumulative of the foregoing, if a Borrowing Base Deficiency exists
         prior to such sale, transfer or other disposition of assets, then in
         lieu of the provisions of clause(a) of Section 3.1.2, the Borrower
         shall immediately make a payment with respect to the Obligations (which
         shall be applied (or held for application, as the case may be) by the
         Lenders first to the payment of the aggregate unpaid principal amount
         of those Loans then outstanding, and then to the payment of the then
         Letter of Credit Outstandings) in an aggregate principal amount equal
         to the lesser of the amount of the Borrowing Base Deficiency (after
         giving effect to the applicable sale, transfer or other disposition) or
         100% of the sales proceeds from the applicable sale, transfer or other
         disposition, net of usual and customary fees, expenses and taxes.

         In addition, if the Borrower or any of its Subsidiaries raises capital
         through the issuance of any type of equity or issues any subordinated
         debt or senior unsecured debt otherwise permitted by this Agreement,
         the proceeds of such issuance, net of usual and customary fees,
         expenses and taxes, will first be applied to cure any Borrowing Base
         Deficiency.

         SECTION 3.2. INTEREST PROVISIONS. Interest on the outstanding principal
amount of Loans shall accrue and be payable in accordance with this Section 3.2.

         SECTION 3.2.1. RATES. Pursuant to an appropriately delivered Borrowing
Request or Continuation/Conversion Notice, the Borrower may elect that Loans
comprising a Borrowing accrue interest at a rate per annum:




                                      -39-
<PAGE>   47



                  (a) on that portion maintained from time to time as a Base
         Rate Loan, equal to the lesser of (I) the sum of the Alternate Base
         Rate from time to time in effect plus the Applicable Margin, and (ii)
         the Highest Lawful Rate; and

                  (b) on that portion maintained as LIBO Rate Loans, during each
         Interest Period applicable thereto, equal to the lesser of (I) the sum
         of the LIBO Rate (Reserve Adjusted) for such Interest Period plus the
         Applicable Margin, and (ii) the Highest Lawful Rate.

Notwithstanding the foregoing limitations pertaining to the Highest Lawful Rate,
in the event that the amount payable under this Section 3.2.1 is limited to the
Highest Lawful Rate, the Lenders and Issuers shall have the benefit of the
provisions of Section 11.15 including Section 11.15(a)(iv).

         SECTION 3.2.2. POST-MATURITY RATES. After (w) the date any principal
amount of any Loan shall have become due and payable (whether on the Stated
Maturity Date, upon acceleration or otherwise, but only so long as such
principal amount has not been paid), (x) any other monetary Obligation of the
Borrower shall have become due and payable beyond any applicable grace period
(including the failure of the Borrower to pay in full the amount of any
Reimbursement Obligation on the applicable Disbursement Date, but only so long
as such monetary Obligation has not been paid), (y) the date any other Event of
Default shall have occurred (and so long as such Event of Default shall be
continuing), and (z) the date that is ninety (90) days after a Borrowing Base
Deficiency Notification Date, if the applicable Borrowing Base Deficiency has
not been cured, the Borrower shall pay, but only to the extent permitted by
Applicable Law, interest (after as well as before judgment) on all Obligations
at a rate per annum equal to

                  (a) with respect to LIBO Rate Loans for the period from the
         date such Loan becomes due and payable to the end of the then current
         Interest Period, the higher of (i) the sum of the LIBO Rate (Reserve
         Adjusted) for such Interest Period plus the Applicable Margin plus a
         margin of 3%, or (ii) the sum of the Alternate Base Rate plus the
         Applicable Margin plus a margin of 3%; or

                  (b) in all other cases, the sum of the Alternate Base Rate
         plus the Applicable Margin plus a margin of 3%.

         SECTION 3.2.3. PAYMENT DATES. Interest accrued on each Loan shall be
payable, without duplication:

                  (a) on the Stated Maturity Date;



                                      -40-
<PAGE>   48


                  (b) on the date of any optional or required payment or
         prepayment, in whole or in part, of principal outstanding on such Loan
         and on that portion of such Loan so paid or prepaid;

                  (c) with respect to Base Rate Loans, on each Quarterly Payment
         Date occurring after the Effective Date;

                  (d) with respect to LIBO Rate Loans, on the last day of each
         applicable Interest Period (and, if such Interest Period shall exceed
         three months, on the 90th day of such Interest Period);

                  (e) with respect to any Base Rate Loans converted into LIBO
         Rate Loans on a day when interest would not otherwise have been payable
         pursuant to clause (c), on the date of such conversion; and

                  (f) on that portion of any Loans which is accelerated pursuant
         to Section 9.2 or Section 9.3, immediately upon such acceleration.

Interest accrued on Loans or other monetary Obligations arising under this
Agreement or any other Loan Document after the date such amount shall have
become due and payable (whether on the Stated Maturity Date, upon acceleration
or otherwise) shall be payable upon demand.

         SECTION 3.3. FEES. The Borrower agrees to pay the fees set forth in
this Section 3.3. All such fees shall be non-refundable.

         SECTION 3.3.1. CLOSING FEE. On the Effective Date, the Borrower
agrees to pay to the Administrative Agent, at the closing for the pro rata
account of each of the Lenders, an upfront fee in an amount based on each
Lender's Percentage of the Total Commitment as the Borrower and the Lenders have
previously agreed.

         SECTION 3.3.2. ADMINISTRATIVE AGENT'S FEES. The Borrower shall pay to
the Administrative Agent for its own account the fees set forth in the Fee
Letter on the respective dates for such payment prescribed in the Fee Letter.

         SECTION 3.3.3. COMMITMENT FEES. The Borrower shall pay to the
Administrative Agent, for the pro rata account of each Lender, a Commitment Fee
(the "Commitment Fee"), for the period from and including the Effective Date to
but not including any Commitment Termination Date, equal to an amount determined
in accordance with the utilization of the Borrowing Base as set forth in the
definition of "Applicable Margin," of such Lender's Percentage of the daily
average Total Commitment less the sum of (i) the aggregate outstanding principal
amount of all Loans on such date, plus (ii) the Letter of Credit Outstandings on
such date. Accrued


                                      -41-
<PAGE>   49

Commitment Fees shall be payable by the Borrower in arrears on each Quarterly
Payment Date and on the earlier of any Commitment Termination Date.

         SECTION 3.3.4. LETTER OF CREDIT FACE AMOUNT FEE. The Borrower agrees
to pay to the Administrative Agent, for the pro rata account of each Lender, a
fee for each Letter of Credit for the period from and including the date of the
issuance of such Letter of Credit to (but not including) the date upon which
such Letter of Credit expires or is fully drawn, at a rate per annum equal to
the Applicable Margin (LIBO Rate column) per annum on the Stated Amount of such
Letter of Credit. Such fee shall be payable by the Borrower in arrears on each
Quarterly Payment Date, and on any Commitment Termination Date for any period
then ending for which such fee shall not theretofore have been paid, commencing
on the first such date after the issuance of such Letter of Credit.

         SECTION 3.3.5. LETTER OF CREDIT ISSUANCE FEE. The Borrower shall pay
to the Administrative Agent, for the account of the applicable Issuer, a letter
of credit issuance fee for each Letter of Credit issued by such Issuer equal to
the greater of (x) 1/8 of 1% of the Stated Amount of such Letter of Credit or
(y) $300. Such Letter of Credit fronting fee shall be due and payable on the
date of such issuance.

         SECTION 3.3.6. LETTER OF CREDIT ADMINISTRATIVE FEE. The Borrower
shall pay to the Administrative Agent, for the account of each Issuer, from time
to time on demand the normal issuance, presentation, amendment and other
processing fees, and other standard costs and charges, of the Issuer relating to
letters of credit as from time to time in effect.

         SECTION 3.3.7. ENGINEERING FEES. For each Requested Redetermination
in connection with an acquisition of Oil and Gas Properties pursuant to Section
2.7(b)(iii), the Borrower shall pay fees in the amount of $10,000 to the
Administrative Agent (for its own account) and $5,000 to each other Lender.

         SECTION 3.4. PROCEEDS ACCOUNT. The Security Documents contain an
assignment to the Administrative Agent by the Borrower and its Subsidiaries of
all production of Hydrocarbons and all proceeds attributable thereto properly
allocable to the Mortgaged Properties. Notwithstanding such assignment of
production, the Borrower or such Subsidiaries, as applicable, may, until the
Administrative Agent shall give notice to the contrary, receive such proceeds.
Thereafter, all such proceeds from the sale of such production shall be paid
directly into an account of the Borrower maintained with the Administrative
Agent (the "Proceeds Account"). The Borrower hereby grants to the Administrative
Agent a security interest in the Proceeds Account and all proceeds thereof.




                                      -42-
<PAGE>   50

                                   ARTICLE IV

                                LETTERS OF CREDIT

         SECTION 4.1. ISSUANCE REQUESTS. By delivering to the Administrative
Agent an Issuance Request on or before 12:00 noon (Dallas time), the Borrower
may request, from time to time prior to any Commitment Termination Date, and on
not less than three (3) nor more than ten (10) Business Days' notice, that such
Issuer issue an irrevocable standby letter of credit in such form as may be
mutually agreed by the Borrower and such Issuer (each a "Letter of Credit"), in
support of financial or performance obligations of the Borrower incurred in the
Borrower's ordinary course of business and which are described in such Issuance
Request. Upon receipt of an Issuance Request, the Administrative Agent shall
promptly notify the Lenders and the Issuer thereof. Each Letter of Credit shall
by its terms:

                  (a) be issued in a Stated Amount which

                           (i) is at least $50,000;

                           (ii) does not exceed (or would not exceed) the then
                  Letter of Credit Availability;

                  (b) be stated to expire on a date (its "Stated Expiry Date")
         no later than the earlier of (i) one (1) year after its date of
         issuance, or (ii) the Stated Maturity Date; and

                  (c) on or prior to its Stated Expiry Date

                           (i) terminate immediately upon notice to the Issuer
                  from the beneficiary thereunder that all obligations covered
                  thereby have been terminated, paid, or otherwise satisfied in
                  full, or

                           (ii) reduce in part immediately and to the extent the
                  beneficiary thereunder has notified the Issuer that the
                  obligations covered thereby have been paid or otherwise
                  satisfied in part.

So long as no Default has occurred and is continuing, by delivery to the
Administrative Agent and to the applicable Issuer of an Issuance Request at
least five (5) but not more than ten (10) Business Days prior to the Stated
Expiry Date of any Letter of Credit, the Borrower may request such Issuer to
extend the Stated Expiry Date of such Letter of Credit for an additional period
not to exceed the earlier of one (1) year from its date of extension, the Stated
Maturity Date or the Commitment Termination Date.




                                      -43-
<PAGE>   51



         SECTION 4.2. ISSUANCES AND EXTENSIONS. On the terms and subject to the
conditions of this Agreement (including Article VI), the applicable Issuer shall
issue Letters of Credit, and extend the Stated Expiry Dates of outstanding
Letters of Credit, in accordance with the Issuance Requests made therefor. Each
Issuer will make available the original of each Letter of Credit which it issues
in accordance with the Issuance Request therefor to the beneficiary thereof (and
will promptly provide the Administrative Agent and each of the Lenders with a
copy of such Letter of Credit) and will notify the beneficiary under any Letter
of Credit of any extension of the Stated Expiry Date thereof.

         The Issuer is under no obligation to issue any Letter of Credit if:

                  (a) any order, judgment or decree of any Government Agency or
         arbitrator shall by its terms purport to enjoin or restrain the Issuer
         from issuing such Letter of Credit, or any requirement of Applicable
         Law or any request or directive (whether or not having the force of
         law) from any Government Agency with jurisdiction over the Issuer shall
         prohibit, or request that the Issuer refrain from, the issuance of
         letters of credit generally or such Letter of Credit in particular or
         shall impose upon the Issuer with respect to such Letter of Credit any
         restriction, reserve or capital requirement (for which the Issuer is
         not otherwise compensated hereunder) not in effect on the Effective
         Date, or shall impose upon the Issuer any unreimbursed loss, cost or
         expense which was not applicable on the Effective Date and which the
         Issuer in good faith deems material to it;

                  (b) one or more of the applicable conditions contained in
         Article VI is not then satisfied;

                  (c) the expiry date of any requested Letter of Credit is prior
         to the maturity date of any financial obligation to be supported by the
         requested Letter of Credit;

                  (d) any requested Letter of Credit does not provide for
         drafts, or is not otherwise in form and substance acceptable to the
         Issuer, or the issuance of a Letter of Credit shall violate any
         applicable policies of the Issuer;

                  (e) any standby Letter of Credit is for the purpose of
         supporting the issuance of any letter of credit by any other Person; or

                  (f) such Letter of Credit is in a face amount denominated in a
         currency other than Dollars.




                                      -44-
<PAGE>   52



         The International Standby Practices as published by the International
Chamber of Commerce most recently at the time of issuance of any Letter of
Credit shall (unless otherwise expressly provided in the Letters of Credit)
apply to the Letters of Credit.

         SECTION 4.3. LENDERS' PARTICIPATION. Each Letter of Credit issued
pursuant to Section 4.2 shall, effective upon its issuance and without further
action, be issued on behalf of all Lenders (including the Issuer thereof, if it
is a Lender) pro rata according to their respective Percentages. Each Lender
shall, to the extent of its Percentage, be deemed irrevocably to have
participated in the issuance of such Letter of Credit and shall be responsible
to reimburse promptly the Issuer thereof for Reimbursement Obligations which
have not been reimbursed by the Borrower in accordance with Section 4.5, or
which have been reimbursed by the Borrower but must be returned, restored or
disgorged by such Issuer for any reason, and each Lender shall, to the extent of
its Percentage, be entitled to receive from the Administrative Agent a ratable
portion of the Letter of Credit fees received by the Administrative Agent
pursuant to Section 3.3.4, with respect to each Letter of Credit. In the event
that the Borrower shall fail to reimburse any Issuer, or if for any reason Loans
shall not be made to fund any Reimbursement Obligation, all as provided in
Section 4.5 and in an amount equal to the amount of any drawing honored by such
Issuer under a Letter of Credit issued by it, or in the event such Issuer must
for any reason return or disgorge such reimbursement, such Issuer shall promptly
notify each Lender of the unreimbursed amount of such drawing and of such
Lender's respective participation therein. Each Lender shall make available to
such Issuer, whether or not any Default shall have occurred and be continuing,
an amount equal to its respective participation in same day or immediately
available funds at the office of such Issuer specified in such notice not later
than 11:00 a.m. (Dallas time) on the Business Day (under the laws of the
jurisdiction of such Issuer) after the date notified by such Issuer. In the
event that any Lender fails to make available to such Issuer the amount of such
Lender's participation in such Letter of Credit as provided herein, such Issuer
shall be entitled to recover such amount on demand from such Lender together
with interest at the daily average Federal Funds Rate for three (3) Business
Days (together with such other compensatory amounts as may be required to be
paid by such Lender to the Administrative Agent pursuant to the Rules for
Interbank Compensation of the Council on International Banking or the
Clearinghouse Compensation Committee, as the case may be, as in effect from time
to time) and thereafter at the Alternate Base Rate plus 3%. Nothing in this
Section shall be deemed to prejudice the right of any Lender to recover from any
Issuer any amounts made available by such Lender to such Issuer pursuant to this
Section in the event that it is determined by a court of competent jurisdiction
that the payment with respect to a Letter of Credit by such Issuer in respect of
which payment was made by such Lender constituted gross negligence or wilful
misconduct on the part of such Issuer. Each Issuer shall distribute to each
other Lender which has paid all amounts payable by it under this Section with
respect to any Letter of Credit issued by such Issuer such other Lender's
Percentage of all payments


                                      -45-
<PAGE>   53

received by such Issuer from the Borrower in reimbursement of drawings honored
by such Issuer under such Letter of Credit when such payments are received.

         SECTION 4.4. DISBURSEMENTS. Each Issuer will notify the Borrower and
the Administrative Agent promptly of the presentment for payment of any Letter
of Credit, together with notice of the date (the "Disbursement Date") such
payment shall be made. Subject to the terms and provisions of such Letter of
Credit, the applicable Issuer shall make such payment to the beneficiary (or its
designee) of such Letter of Credit. In paying any drawing under a Letter of
Credit, the applicable Issuer shall not have any responsibility to obtain any
document (other than any sight draft and certificates expressly required by the
Letter of Credit) or to ascertain or inquire as to the validity or accuracy of
any such document or the authority of the Person executing or delivering any
such document. Prior to 12:00 noon (Dallas time) on the Disbursement Date, the
Borrower will reimburse the applicable Issuer for all amounts which have been
disbursed under the Letter of Credit. To the extent the applicable Issuer is not
reimbursed in full in accordance with the preceding sentence, the Borrower's
Reimbursement Obligation shall accrue interest at a fluctuating rate determined
by reference to the Alternate Base Rate, plus the Applicable Margin, plus a
margin of 3% per annum, payable on demand. In the event the applicable Issuer is
not reimbursed by the Borrower on the Disbursement Date, or if such Issuer must
for any reason return or disgorge such reimbursement, the Lenders (including
such Issuer) shall, on the terms and subject to the conditions of this
Agreement, fund the Reimbursement Obligation therefor by making, on the next
Business Day, Loans, which are Base Rate Loans, as provided in Section 2.1.1,
bearing interest at the rate provided in Section 3.2.2 (the Borrower being
deemed to have given a timely Borrowing Request therefor for such amount);
provided, however, for the purpose of determining the availability of the
Commitments to make Loans immediately prior to giving effect to the application
of the proceeds of such Loans, such Reimbursement Obligation shall be deemed not
to be outstanding at such time.

         SECTION 4.5. REIMBURSEMENT. The Borrower's obligation (a "Reimbursement
Obligation") under Section 4.4 to reimburse the applicable Issuer with respect
to each Disbursement (including interest thereon), and each Lender's obligation
to make participation payments in each drawing which has not been reimbursed by
the Borrower, shall be absolute and unconditional under any and all
circumstances and irrespective of any setoff, counterclaim, or defense to
payment which the Borrower may have or have had against such Issuer or any
Lender or any beneficiary of a Letter of Credit, including any defense based
upon the occurrence of any Default, any draft, demand or certificate or other
document presented under a Letter of Credit proving to be forged, fraudulent,
invalid or insufficient, the failure of any Disbursement to conform to the terms
of the applicable Letter of Credit (if, in the applicable Issuer's good faith
opinion, such Disbursement is determined to be appropriate) or any
non-application or misapplication by the beneficiary of the proceeds of such


                                      -46-
<PAGE>   54

Disbursement, or the legality, validity, form, regularity, or enforceability of
such Letter of Credit;

         SECTION 4.6. DEEMED DISBURSEMENTS. Upon the occurrence of any
Commitment Termination Date, an amount equal to that portion of Letter of Credit
Outstandings attributable to outstanding and undrawn Letters of Credit shall, at
the election of the applicable Issuer, acting on instructions from the Required
Lenders, and without demand upon or notice to the Borrower, be deemed to have
been paid or disbursed by such Issuer under such Letters of Credit
(notwithstanding that such amount may not in fact have been so paid or
disbursed), and, upon notification by such Issuer to the Administrative Agent
and the Borrower of its obligations under this Section, the Borrower shall be
immediately obligated to reimburse such Issuer the amount deemed to have been so
paid or disbursed by such Issuer. Any amounts so received by such Issuer from
the Borrower pursuant to this Section shall be held as collateral security for
the repayment of the Borrower's obligations in connection with the Letters of
Credit issued by such Issuer. At any time when such Letters of Credit shall
terminate and all Obligations to such Issuer are either terminated or paid or
reimbursed to such Issuer in full, the Obligations of the Borrower under this
Section shall be reduced accordingly (subject, however, to reinstatement in the
event any payment in respect of such Letters of Credit is recovered in any
manner from such Issuer), and such Issuer will return to the Borrower the
excess, if any, of

                  (a) the aggregate amount deposited by the Borrower with such
         Issuer and not theretofore applied by such Issuer to any Reimbursement
         Obligation

over

                  (b) the aggregate amount of all Reimbursement Obligations to
         such Issuer pursuant to this Section, as so adjusted.

At such time when all Events of Default shall have been cured or waived, such
Issuer shall return to the Borrower all amounts then on deposit with such Issuer
pursuant to this Section. All amounts on deposit pursuant to this Section shall,
until their application to any Reimbursement Obligation or their return to the
Borrower, as the case may be, bear interest at the daily average Federal Funds
Rate from time to time in effect (net of the costs of any reserve requirements,
in respect of amounts on deposit pursuant to this Section, pursuant to F.R.S.
Board Regulation D), which interest shall be held by such Issuer as additional
collateral security for the repayment of the Borrower's Obligations in
connection with the Letters of Credit issued by such Issuer.

         SECTION 4.7. NATURE OF REIMBURSEMENT OBLIGATIONS. The Borrower shall
assume all risks of the acts, omissions, or misuse of any Letter of Credit by
the


                                      -47-
<PAGE>   55

beneficiary thereof. Neither the Issuer nor any Lender (except to the extent of
its own gross negligence or wilful misconduct) shall be responsible for:

                  (a) the form, validity, sufficiency, accuracy, genuineness, or
         legal effect of any Letter of Credit or any document submitted by any
         party in connection with the application for and issuance of a Letter
         of Credit, even if it should in fact prove to be in any or all respects
         invalid, insufficient, inaccurate, fraudulent, or forged;

                  (b) the form, validity, sufficiency, accuracy, genuineness, or
         legal effect of any instrument transferring or assigning or purporting
         to transfer or assign a Letter of Credit or the rights or benefits
         thereunder or proceeds thereof in whole or in part, which may prove to
         be invalid or ineffective for any reason;

                  (c) failure of the beneficiary to comply fully with conditions
         required in order to demand payment under a Letter of Credit;

                  (d) errors, omissions, interruptions, or delays in
         transmission or delivery of any messages, by mail, cable, telegraph,
         telex, facsimile or otherwise;

                  (e) any loss or delay in the transmission or otherwise of any
         document or draft required in order to make a Disbursement under a
         Letter of Credit or of the proceeds thereof;

                  (f) any change in the time, manner or place of payment of, or
         in any other term of, all or any of the obligations of the Borrower in
         respect of any Letter of Credit;

                  (g) the existence of any claim, set-off, defense or other
         right that the Borrower may have at any time against any beneficiary or
         any transferee of any Letter of Credit (or any Person for whom any such
         beneficiary or any such transferee may be acting), the applicable
         Issuer or any other Person, whether in connection with this Agreement,
         the transactions contemplated hereby or by the Letters of Credit or any
         unrelated transaction;

                  (h) any payment by the applicable Issuer under any Letter of
         Credit against presentation of a draft or certificate that does not
         strictly comply with the terms of any Letter of Credit; or any payment
         made by the applicable Issuer under any Letter of Credit to any Person
         purporting to be a trustee in bankruptcy, debtor-in-possession,
         assignee for the benefit of creditors, liquidator, receiver or other
         representative of or successor to any beneficiary or any transferee of
         any Letter of Credit, including any arising in connection with any
         insolvency proceeding; or



                                      -48-
<PAGE>   56



                  (i) any other circumstance or happening whatsoever, whether or
         not similar to any of the foregoing, including any other circumstance
         that might otherwise constitute a defense available to, or a discharge
         of, the Borrower or a guarantor.

None of the foregoing shall affect, impair, or prevent the vesting of any of the
rights or powers granted any Issuer or any Lender hereunder. In furtherance and
extension, and not in limitation or derogation, of any of the foregoing, any
action taken or omitted to be taken by any Issuer or any Lender in good faith
with respect to any Letter of Credit shall be binding upon the Borrower and
shall not put such Issuer or such Lender under any resulting liability to the
Borrower.

         SECTION 4.8. INCREASED COSTS; INDEMNITY. If by reason of

                  (a) any change after the Effective Date in applicable law,
         regulation, rule, decree or regulatory requirement or any change in the
         interpretation or application by any judicial or regulatory authority
         of any law, regulation, rule, decree or regulatory requirement, or

                  (b) compliance by any Issuer or any Lender with any direction,
         request or requirement (whether or not having the force of law) of any
         governmental or monetary authority, including Regulation D of the
         F.R.S. Board:

                           (i) any Issuer or any Lender shall be subject to any
                  tax (other than taxes on net income and franchises), levy,
                  charge or withholding of any nature or to any variation
                  thereof or to any penalty with respect to the maintenance or
                  fulfillment of its obligations under this Article IV, whether
                  directly or by such being imposed on or suffered by any Issuer
                  or any Lender;

                           (ii) any reserve, deposit or similar requirement is
                  or shall be applicable, increased, imposed or modified in
                  respect of any Letters of Credit issued by any Issuer or
                  participations therein purchased by any Lender; or

                           (iii) there shall be imposed on any Issuer or any
                  Lender any other condition regarding this Article IV or any
                  Letter of Credit or any participation therein,

and the result of the foregoing is directly or indirectly to increase the cost
to any Issuer or such Lender of issuing or maintaining any Letter of Credit or
of purchasing or maintaining any participation therein, or to reduce any amount
receivable in respect thereof by any Issuer, then and in any such case any such
Issuer or any such Lender may, at any time after the additional cost is incurred
or the amount received is


                                      -49-
<PAGE>   57


reduced, notify the Administrative Agent and the Borrower thereof, and the
Borrower shall, on demand, pay such amounts as any Issuer or such Lender may
specify to be necessary to compensate any Issuer or such Lender for such
additional cost or reduced receipt, together with interest at a rate equal to
the Alternate Base Rate plus the Applicable Margin on such amount from the date
demanded until the fifth Business Day after such demand and thereafter at a rate
equal at all times to the Alternate Base Rate plus the Applicable Margin, plus
3% per annum until payment in full thereof. The determination by any such Issuer
or any such Lender, as the case may be, of any amount due pursuant to this
Section, as set forth in a statement setting forth the calculation thereof in
reasonable detail, shall, in the absence of manifest error, be final and
conclusive and binding on all of the parties hereto.

         In addition to amounts payable as elsewhere provided in this Article
IV, the Borrower hereby indemnifies, exonerates and holds each Issuer, the
Administrative Agent and each Lender harmless from and against any and all
actions, causes of action, suits, losses, costs, liabilities and damages, and
expenses incurred in connection therewith (irrespective of whether such Issuer,
the Administrative Agent or such Lender is a party to the action for which
indemnification is sought), including reasonable attorneys' fees and
disbursements, which such Issuer, the Administrative Agent or such Lender may
incur or be subject to as a consequence, direct or indirect, of

                  (a) the issuance of the Letters of Credit, other than as a
         result of the gross negligence or wilful misconduct of such Issuer as
         determined by a court of competent jurisdiction, or

                  (b) the failure of such Issuer to honor a drawing under any
         Letter of Credit as a result of any act or omission, whether rightful
         or wrongful, of any present or future de jure or de facto Government
         Agency.


                                    ARTICLE V

                   CERTAIN INTEREST RATE AND OTHER PROVISIONS


         SECTION 5.1. LIBO RATE LENDING UNLAWFUL. If any Lender shall determine
(which determination shall, upon notice thereof to the Borrower, the
Administrative Agent and the other Lenders, be conclusive and binding on the
Borrower) that the introduction of or any change in or in the interpretation by
any governmental or other regulatory authority charged with the administration
thereof of any law makes it unlawful, or any central bank or other governmental
authority asserts that it is unlawful, for such Lender to make, continue or
maintain any Loan as, or to convert any Loan into, a LIBO Rate Loan, the
obligations of all Lenders to make, continue, maintain or convert into any such
LIBO Rate Loans shall, upon such determination,


                                      -50-
<PAGE>   58

forthwith be suspended until such Lender shall notify the Administrative Agent
and the Borrower that the circumstances causing such suspension no longer exist,
and all LIBO Rate Loans shall automatically convert into Base Rate Loans at the
end of the then current Interest Periods with respect thereto or sooner, if
required by such law or assertion; provided that if circumstances subsequently
change so that such Lender shall not continue to be so affected, such Lender
shall by notice to the Borrower reinstate such obligations to make, convert,
maintain or continue loans as, or into, LIBO Rate Loans.

         SECTION 5.2. DEPOSITS UNAVAILABLE. If the Administrative Agent shall
have determined that

                  (a) Dollar deposits in the relevant amount and for the
         relevant Interest Period are not available to the Administrative Agent
         in its relevant market; or

                  (b) by reason of circumstances affecting the Administrative
         Agent's relevant market, adequate means do not exist for ascertaining
         the interest rate applicable hereunder to LIBO Rate Loans,

then, upon notice from the Administrative Agent to the Borrower and the Lenders,
the obligations of all Lenders under Section 2.3 and Section 2.4 to make or
continue any Loans as, or to convert any Loans into, LIBO Rate Loans shall
forthwith be suspended until the Administrative Agent shall notify the Borrower
and the Lenders that the circumstances causing such suspension no longer exist.

         SECTION 5.3. INCREASED LIBO RATE LOAN COSTS, ETC. If by reason of

                  (a) after the Effective Date, any change in Applicable Law or
         any change in the interpretation or application by any judicial or
         regulatory authority of any Applicable Law, or

                  (b) compliance by any Lender or any Issuer with any direction,
         request or requirement (whether or not having the force of law) of any
         Government Agency, including Regulation D of the F.R.S. Board:

                           (i) any Lender or any Issuer shall be subject to any
                  tax (other than taxes on net income and franchises), levy,
                  charge or withholding of any nature or to any variation
                  thereof or to any penalty with respect to any payment due
                  under any LIBO Rate Loan or other amounts due under this
                  Agreement, whether directly or by such being imposed on or
                  suffered by such Lender or any Issuer;

                           (ii) any reserve, deposit or similar requirement is
                  or shall be applicable, increased, imposed or modified in
                  respect of any extensions


                                      -51-
<PAGE>   59

                  of credit or other assets of, or any deposits with or other
                  liabilities of, any Lender or Loans made by such Lender or any
                  Issuer or Letters of Credit issued by such Issuer, or against
                  any other funds, obligations or other property owned or held
                  by such Lender or such Issuer and such Lender or such Issuer
                  actually incurs such additional costs; or

                           (iii) there shall be imposed on any Lender or any
                  Issuer any other condition affecting this Agreement (or any of
                  such extensions of credit or liabilities),

and the result of the foregoing is directly or indirectly to increase the cost
to such Lender of making, continuing or such Issuer of issuing or maintaining
(or of its obligation to make, continue or maintain) any Loans as, or of
converting or such Issuer (or of its obligation to convert) any Loans into, LIBO
Rate Loans, or of the Issuer issuing or maintaining any Letter of Credit or to
reduce any amount receivable in respect thereof by such Lender or such Issuer,
then and in any such case such Lender or such Issuer may, at any time after the
additional cost is incurred or the amount received is reduced, notify the
Administrative Agent and the Borrower thereof, and the Borrower shall pay on
demand such amounts as such Lender or such Issuer may specify to be necessary to
compensate such Lender or such Issuer for such additional cost or reduced
receipt, together with interest at a rate equal to the Alternate Base Rate plus
the Applicable Margin on such amount from the date demanded until the fifth
Business Day after such demand and thereafter at a rate equal at all times to
the Alternate Base Rate plus the Applicable Margin plus 3% per annum until
payment in full thereof. The determination by such Lender or such Issuer of any
amount due pursuant to this Section, as set forth in a statement setting forth
the calculation thereof in reasonable detail, shall, in the absence of manifest
error, be final and conclusive and binding on all of the parties hereto.

         SECTION 5.4. FUNDING LOSSES. In the event any Lender or any Issuer
shall incur any loss or expense (including any loss or expense incurred by
reason of the liquidation or reemployment of deposits or other funds acquired by
such Lender or such Issuer to make, continue or maintain any portion of the
principal amount of any Loan as, or to convert any portion of the principal
amount of any Loan into, a LIBO Rate Loan) as a result of

                  (a) any conversion or repayment or prepayment of the principal
         amount of any LIBO Rate Loans on a date other than the scheduled last
         day of the Interest Period applicable thereto, whether pursuant to
         Section 3.1 or otherwise;

                  (b) any Loans not being made as LIBO Rate Loans in accordance
         with the Borrowing Request therefor by reason of any act or omission by
         the Borrower or failure of a condition precedent to be satisfied; or



                                      -52-
<PAGE>   60



                  (c) any Loans not being continued as, or converted into, LIBO
         Rate Loans in accordance with the Continuation/Conversion Notice
         therefor by reason of any act or omission by the Borrower,

then, upon the written notice of such Lender or such Issuer to the Borrower
(with a copy to the Administrative Agent), the Borrower shall pay directly to
such Lender or such Issuer such amount as will (in the reasonable determination
of such Lender or such Issuer) reimburse such Lender or such Issuer for such
loss or expense, together with interest at a rate equal to the Alternate Base
Rate plus the Applicable Margin on such amount from the date demanded until the
fifth Business Day after such demand and thereafter at a rate equal at all times
to the Alternate Base Rate plus the Applicable Margin plus 3% per annum until
payment in full thereof. Such written notice (which shall include calculations
in reasonable detail) shall, in the absence of manifest error, be conclusive and
binding on the Borrower.

         SECTION 5.5. INCREASED CAPITAL COSTS. If, after the Effective Date, any
change in, or the introduction, adoption, effectiveness, interpretation,
reinterpretation or phase-in of, any Applicable Law of any Government Agency
affects or would affect the amount of capital required or expected to be
maintained by any Issuer or any Lender or any Person controlling such Issuer or
such Lender, and such Issuer or such Lender determines (in its sole and absolute
discretion) that the rate of return on its or such controlling Person's capital
as a consequence of its Commitments, issuance of or participation in Letters of
Credit issued by or the Loans made by such Issuer or such Lender is reduced to a
level below that which such Issuer or such Lender or such controlling Person
could have achieved but for the occurrence of any such circumstance, then, in
any such case upon notice from time to time by such Issuer or such Lender to the
Borrower and the Administrative Agent, the Borrower shall immediately pay
directly to such Issuer or such Lender additional amounts sufficient to
compensate such Issuer or such Lender or such controlling Person for such
reduction in rate of return. A statement of such Issuer or such Lender as to any
such additional amount or amounts (including calculations thereof in reasonable
detail) shall, in the absence of manifest error, be conclusive and binding on
the Borrower. In determining such amount, such Issuer or such Lender may use any
method of averaging and attribution that it (in its reasonable discretion) shall
deem applicable.

         SECTION 5.6. TAXES.

         (a) All payments by the Borrower of principal of, and interest on, the
Loans or Letters of Credit and all other amounts payable hereunder shall be made
free and clear of and without deduction for any present or future income,
excise, stamp or franchise taxes and other taxes, fees, duties, withholdings or
other charges of any nature whatsoever imposed by any taxing authority, but
excluding franchise taxes and taxes imposed on or measured by any Lender's or
any Issuer's net income, receipts, total assets, net worth or shareholders'
capital (such non-excluded items being called


                                      -53-
<PAGE>   61

"Taxes"). In the event that any withholding or deduction from any payment to be
made by the Borrower hereunder is required in respect of any Taxes pursuant to
any Applicable Law, then the Borrower will

                  (i) pay directly to the relevant authority the full amount
         required to be so withheld or deducted;

                  (ii) promptly forward to the Administrative Agent an official
         receipt or other documentation satisfactory to the Administrative Agent
         evidencing such payment to such authority; and

                  (iii) pay to the Administrative Agent for the account of the
         Lenders or Issuers such additional amount or amounts as is necessary to
         ensure that the net amount actually received by each Lender or each
         Issuer will equal the full amount such Lender or such Issuer would have
         received had no such withholding or deduction been required.

Moreover, if any Taxes are directly asserted against the Administrative Agent or
any Lender or any Issuer with respect to any payment received by the
Administrative Agent or such Lender or such Issuer hereunder, the Administrative
Agent or such Lender or such Issuer may pay such Taxes and the Borrower will
promptly pay such additional amounts (including any penalties, interest or
expenses) as is necessary in order that the net amount received by such person
after the payment of such Taxes (including any Taxes on such additional amount)
shall equal the amount such person would have received had not such Taxes been
asserted.

         (b) If the Borrower fails to pay any Taxes when due to the appropriate
taxing authority or fails to remit to the Administrative Agent for the account
of the Lenders the required receipts or other required documentary evidence, the
Borrower shall indemnify the Lenders and Issuers for any incremental Taxes,
interest, expenses or penalties that may become payable by any Lender or any
Issuer as a result of any such failure, whether or not such Taxes or liabilities
were correctly or legally asserted. Payment under this indemnity shall be made
within thirty (30) days after the date the Administrative Agent makes written
demand therefore. For purposes of this Section 5.6, a distribution hereunder by
the Administrative Agent or any Lender or any Issuer to or for the account of
any Lender or any Issuer shall be deemed a payment by the Borrower.

         (c) Notwithstanding the foregoing provisions of this section, the
Borrower shall be entitled, to the extent it is required to do so by law, to
deduct or withhold (and not to make any indemnification or reimbursement for)
income or other similar taxes imposed by the United States of America (other
than any portion thereof attributable to a change in federal income tax laws
effected after the Effective Date) from interest, fees or other amounts payable
hereunder for the account of any Lender,


                                      -54-
<PAGE>   62

other than a Lender (i) who is a U.S. person for Federal income tax purposes or
(ii) who has the Prescribed Forms (defined below) on file with Administrative
Agent (with copies provided to the Borrower) for the applicable year to the
extent deduction or withholding of such taxes is not required as a result of
such Prescribed Forms, provided that if the Borrower shall so deduct or withhold
any such taxes, it shall provide a statement to the Administrative Agent and
such Lender, setting forth the amount of such taxes so deducted or withheld, the
applicable rate and any other information or documentation which such Lender may
reasonably request for assisting such Lender to obtain any allowable credits or
deductions for the taxes so deducted or withheld in the jurisdiction or
jurisdictions in which such Lender is subject to tax. As used in this section,
"Prescribed Forms" means such duly executed forms or statements, and in such
number of copies, which may, from time to time, be prescribed by law and which,
pursuant to applicable provisions of (x) an income tax treaty between the United
States and the country of residence of the Lender providing the forms or
statements, (y) the Code, or (z) any applicable rules or regulations thereunder,
permit the Borrower to make payments hereunder for the account of such Lender
free of such deduction or withholding of income or similar taxes.

         SECTION 5.7. PAYMENTS, COMPUTATIONS, ETC. Unless otherwise expressly
provided, all payments by the Borrower pursuant to this Agreement, the Note or
any other Loan Document shall be made by the Borrower to the Administrative
Agent for the pro rata account of the Lenders or Issuers entitled to receive
such payment. All such payments shall be made without setoff, deduction or
counterclaim, not later than 11:00 a.m. (Dallas time) on the date due, in same
day or immediately available funds, to such account with the Administrative
Agent in Dallas, Texas as the Administrative Agent shall specify from time to
time by notice to the Borrower. Funds received after that time shall be deemed
to have been received by the Administrative Agent on the next succeeding
Business Day and any applicable interest or fee shall continue to accrue. The
Administrative Agent shall promptly remit in same day funds to each Lender or
each Issuer its share, if any, of such payments received by the Administrative
Agent for the account of such Lender or such Issuer. All interest and fees shall
be computed on the basis of the actual number of days (including the first day
but excluding the last day) occurring during the period for which such interest
or fees is payable over a year comprised of 360 days (or, in the case of
interest on a Base Rate Loan (other than when calculated with respect to the
Federal Funds Rate), 365 days or, if appropriate, 366 days). Whenever any
payment to be made shall otherwise be due on a day which is not a Business Day,
such payment shall (except as otherwise required by clause (c) of the definition
of the term "Interest Period" with respect to LIBO Rate Loans) be made on the
next succeeding Business Day and such extension of time shall be included in
computing interest and fees, if any, in connection with such payment.

         SECTION 5.8. SHARING OF PAYMENTS. If any Lender or Issuer shall obtain
any payment or other recovery (whether voluntary, involuntary, by application of
setoff or


                                      -55-
<PAGE>   63

otherwise) on account of any Loan (other than pursuant to the terms of Sections
5.3, 5.4 and 5.5) or Letter of Credit (other than pursuant to Section 4.8) in
excess of its pro rata share of payments then or therewith obtained by all
Lenders, such Lender shall purchase from the other Lenders or Issuers such
participations in Loans made by them and/or Letters of Credit as shall be
necessary to cause such purchasing Lender to share the excess payment or other
recovery ratably with each of them; provided, however, that if all or any
portion of the excess payment or other recovery is thereafter recovered from
such purchasing Lender or Issuer, the purchase shall be rescinded and each
Lender or each Issuer which has sold a participation to the purchasing Lender or
Issuer shall repay to the purchasing Lender or Issuer, the purchase price to the
ratable extent of such recovery together with an amount equal to such selling
Lender's or such Issuer's ratable share (according to the proportion of

                  (a) the amount of such selling Lender's or such Issuer's
         required repayment to the purchasing Lender or Issuer

to

                  (b) the total amount so recovered from the purchasing Lender
         or Issuer)

of any interest or other amount paid by the purchasing Lender or Issuer in
respect of the total amount so recovered. The Borrower agrees that any Lender or
any Issuer so purchasing a participation from another Lender or any Issuer
pursuant to this Section may, to the fullest extent permitted by law, exercise
all its rights of payment (including pursuant to Section 5.9) with respect to
such participation as fully as if such Lender or such Issuer were the direct
creditor of the Borrower in the amount of such participation. If under any
applicable bankruptcy, insolvency or other similar law, any Lender or any Issuer
receives a secured claim in lieu of a setoff to which this Section applies, such
Lender or such Issuer shall, to the extent practicable, exercise its rights in
respect of such secured claim in a manner consistent with the rights of the
Lenders or Issuers entitled under this Section to share in the benefits of any
recovery on such secured claim.

         SECTION 5.9. SETOFF. Each Lender and each Issuer shall, upon the
occurrence of any Default described in clauses (a) through (d) of Section 9.1.9
or, with the consent of the Required Lenders, upon the occurrence of any other
Event of Default, have the right to appropriate and apply to the payment of the
Obligations owing to it (whether or not then due), and (as security for such
Obligations) the Borrower hereby grants to the Administrative Agent, each Lender
and each Issuer a continuing security interest in, any and all balances,
credits, deposits, accounts or moneys of the Borrower then or thereafter
maintained with or otherwise held by the Administrative Agent, each Lender and
each Issuer, including without limitation, the Proceeds Account. The
Administrative Agent, each Lender and each Issuer agree promptly to


                                      -56-
<PAGE>   64

notify the Borrower after any such setoff and application made by the
Administrative Agent or such Lender or such Issuer; provided, however, that the
failure to give such notice shall not affect the validity of such setoff and
application. The rights of the Administrative Agent, each Lender and each Issuer
under this Section 5.9 are in addition to other rights and remedies (including
other rights of setoff under Applicable Law or otherwise) which the
Administrative Agent or such Lender or such Issuer may have.

         SECTION 5.10. USE OF PROCEEDS. The Borrower shall apply the proceeds of
each Borrowing only in accordance with Section 2.8; without limiting the
foregoing, no proceeds of any Loan will be used to acquire any equity security
of a class which is registered pursuant to Section 12 of the Securities Exchange
Act of 1934 or any "margin stock", as defined in F.R.S. Board Regulation U, X or
T; provided, however, the Borrower may own, and may use proceeds of the Loans to
acquire, "margin stock" (as such term is defined in F.R.S. Board Regulation U, X
or T) so long as the amount paid for such margin stock does not exceed the
lesser of (i) five percent (5%) of the Borrowing Base at the time of such
acquisition, and (ii) twenty-five percent (25%) (or such lesser percentage as
may be required by then Applicable Law) of the value of the Borrower's assets.

         SECTION 5.11. CHANGE OF LENDER.

                  (a) Each Lender agrees that, upon the occurrence of any event
         giving rise to the operation of Sections 4.8, 5.1, 5.3, 5.5 or 5.6 with
         respect to such Lender, it will, if requested by the Borrower, use
         reasonable efforts (subject to overall policy considerations of such
         Lender) to designate another lending office for its Loan (provided that
         such designation is made on such terms that such Lender and its lending
         office suffer no economic, legal or regulatory disadvantage) with the
         object of avoiding the consequence of the event giving rise to the
         operation of any such section. Nothing in this subsection shall affect
         or postpone any of the obligations of the Borrower or the right of any
         Lender provided in Sections 4.8, 5.1, 5.3, 5.5 and 5.6.

                  (b) If any Lender elects to pass through to the Borrower any
         charge or cost under Sections 4.8, 5.3, 5.5 or 5.6, and no Default
         exists, the Borrower may elect to terminate such Lender as a party to
         this Agreement; provided that, prior to or concurrently with such
         termination, the Borrower must either (i) if the Administrative Agent
         and each non-terminated Lender consent, pay to the terminated Lender
         all principal, interest, fees, costs and other Obligations owed to such
         Lender and accrued through the date of termination (including
         reimbursement of any funding losses of the type described in Section
         5.4 that are incurred because of such termination) and terminate such
         Lender's Commitment, or (ii) arrange for one or more Eligible Assignees
         to purchase the rights and duties of the terminated Lender pursuant to
         Section 11.11.1, in


                                      -57-
<PAGE>   65

         which event the terminated Lender will assign all of such rights and
         duties to such Eligible Assignees. Prior to arranging for any Person
         other than an existing Lender to be such an Eligible Assignee, the
         Borrower shall notify the other Lenders of its intention to replace the
         terminated Lender and, during the sixty day period after such notice,
         the other Lenders shall have a right of first refusal to purchase the
         rights and duties of the terminated Lender, pro rata in accordance with
         their respective Percentages.



                                   ARTICLE VI

                              CONDITIONS PRECEDENT

         SECTION 6.1. INITIAL CREDIT EXTENSION. The obligation of each Lender
and each Issuer to make the initial Credit Extension shall be subject to the
prior or concurrent satisfaction of each of the conditions precedent set forth
in this Section 6.1.

         SECTION 6.1.1. RESOLUTIONS, ETC. The Administrative Agent shall have
received from the Borrower a certificate, dated the date of the initial Credit
Extension, of the respective Secretary or Assistant Secretary of each of the
Borrower, Future California and the Partners, for themselves and on behalf of
the Partnership Subsidiaries, as to

                  (a) resolutions of the respective Boards of Directors of the
         Borrower, Future California and the Partners then in full force and
         effect authorizing the execution, delivery and performance of this
         Agreement, the Notes and each other Loan Document to be executed by
         each of them;

                  (b) the incumbency and signatures of those of its officers
         authorized to act with respect to this Agreement, the Notes and each
         other Loan Document executed by each of them;

                  (c) the Organic Documents of the Borrower, Future California,
         the Partners and the Partnership Subsidiaries; and

                  (d) evidence that each of the Borrower, Future California, the
         Partners and the Partnership Subsidiaries is in good standing under the
         laws of the jurisdiction of its respective organization and, as to the
         Future California and the Partnership Subsidiaries, each of the
         jurisdictions where the Mortgaged Properties are located,




                                      -58-
<PAGE>   66



upon which certificate the Administrative Agent, the Lenders and the Issuers may
conclusively rely until the Administrative Agent shall have received a further
certificate of the Secretary of the Borrower canceling or amending such prior
certificate.

         SECTION 6.1.2. DELIVERY OF NOTES. The Administrative Agent shall have
received, for the account of each Lender, its Note duly executed and delivered
by the Borrower.

         SECTION 6.1.3. GUARANTIES. The Administrative Agent shall have
received executed counterparts of the Guaranties, or ratifications or amendments
and restatements of Guaranties previously delivered under the Existing Credit
Agreement, dated as of the date hereof, duly executed by each of the Material
Subsidiaries.

         SECTION 6.1.4. PLEDGE AGREEMENTS. The Administrative Agent shall have
received executed counterparts of the Pledge Agreements, or ratifications or
amendments and restatements of Pledge Agreements previously delivered under the
Existing Credit Agreement, dated as of the date hereof, duly executed by (a) the
Borrower pledging 100% of the Capital Stock of each of the Partners and Future
California, (b) each of the Partners, pledging all of its respective partnership
interests in each of the Partnership Subsidiaries, and (c) the Borrower and any
of its Subsidiaries, as applicable, pledging 65% of the Capital Stock or
partnership interests of each of the foreign Material Subsidiaries of the
Borrower or its Subsidiaries, together with the certificates, evidencing all of
the issued and outstanding shares of Capital Stock or partnership interests
pledged pursuant to the Pledge Agreements, which certificates shall in each case
be accompanied by undated stock powers duly executed in blank, or, if any
securities pledged pursuant to the Pledge Agreements are uncertificated
securities, confirmation and evidence satisfactory to the Administrative Agent
that the security interest in such uncertificated securities has been
transferred to and perfected by the Administrative Agent for the benefit of the
Lenders in accordance with Article 8 and/or Article 9 of the Uniform Commercial
Code, as in effect in the State of Texas, and, as applicable, with evidence of
completion (or satisfactory arrangement for the completion) of all filings and
recordings of the Pledge Agreements as may be necessary, or in the reasonable
opinion of the Administrative Agent, desirable, effectively to create a valid,
perfected first priority lien against and security interest in the collateral
covered thereby.

         SECTION 6.1.5. SECURITY AGREEMENT. The Administrative Agent shall have
received executed counterparts of the Security Agreement, or ratifications or
amendments and restatements of Security Agreements previously delivered under
the Existing Credit Agreement, dated as of the date hereof, duly executed by the
Borrower and its Material Subsidiaries, together with

                  (a) executed copies of Uniform Commercial Code financing
         statements or amendments to existing financing statements (Forms UCC-1
         or UCC-2), in


                                      -59-
<PAGE>   67

         proper form for filing, naming the Borrower as the debtor and the
         Administrative Agent as the secured party, or other similar instruments
         or documents, filed under the Uniform Commercial Code of all
         jurisdictions as may be necessary or, in the opinion of the
         Administrative Agent, desirable to perfect the security interest of the
         Administrative Agent pursuant to the Security Agreement;

                  (b) executed copies of proper Uniform Commercial Code Form
         UCC-3 termination statements, if any, necessary to release all Liens
         and other rights of any Person in any collateral described in the
         Security Agreement previously granted by any Person together with such
         other Uniform Commercial Code Form UCC-3 termination statements as the
         Administrative Agent may reasonably request from the Borrower; and

                  (c) a Uniform Commercial Code Request for Information or
         Copies (UCC Form 11) or similar search report certified by a party
         acceptable to the Administrative Agent, dated a date reasonably near to
         the date of the initial borrowing, listing all effective financing
         statements which name the Borrower, its Subsidiaries and each other
         Obligor (under their present names and any previous names) as the
         debtor and which are filed in the jurisdictions in which filings were
         made pursuant to clause (a) above, together with copies of such
         financing statements (none of which shall cover any collateral
         described in the Security Agreement), other than financing statements
         in favor of Bank of America and financing statements previously
         delivered to Bank of America.

         SECTION 6.1.6. AMENDMENT TO EXISTING MORTGAGES. The Administrative
Agent shall have received counterparts of amendments or amendments and
restatements of the Existing Mortgages, adding the Obligations to the
obligations secured by the Existing Mortgages, dated as of a recent date, duly
executed by the Borrower and its Material Subsidiaries, as applicable.

         SECTION 6.1.7. OPINIONS OF COUNSEL. The Administrative Agent shall have
received opinions, dated the date of the initial Credit Extension and addressed
to the Administrative Agent, the Issuer and all the Lenders, from

                  (a) Haynes and Boone, LLP, counsel to the Borrower and its
         Subsidiaries, substantially in the form of Exhibit H hereto; and

                  (b) Title counsel listed on Schedule VI hereto, as to the
         Mortgaged Properties listed on Schedule VI hereto, substantially in the
         form of Exhibit I-1 hereto.

         SECTION 6.1.8. UCC SEARCHES. The Administrative Agent shall have
received certified copies of Uniform Commercial Code Request for Information or
Copies (UCC Form 11) or similar search reports certified by a party acceptable
to the Administrative


                                      -60-
<PAGE>   68

Agent, dated a date reasonably near to the date of the initial Credit Extension,
listing all effective financing statements which name the Borrower, its
Subsidiaries and each other Obligor (under their present names and any previous
names) as the debtor and which are filed in the jurisdictions in the States of
California, Texas, Oklahoma, New Mexico and Louisiana in which the Existing
Mortgages were filed and the New Mortgages will be filed, together with copies
of such financing statements (none of which shall cover any collateral described
in the Existing Mortgages or the New Mortgages) other than financing statements
in favor of Bank of America and financing statements previously delivered to
Bank of America and approved.

         SECTION 6.1.9. EVIDENCE OF INSURANCE. The Administrative Agent shall
have received certificates of insurance satisfactory to it evidencing the
existence of all insurance required to be maintained by the Borrower by this
Agreement and the other Loan Documents.

         SECTION 6.1.10. ENGINEERING REPORT. The Administrative Agent shall
have received an Engineering Report, dated as of January 1, 1999, from T.J.
Smith & Company, as to the Mortgaged Properties included in the initial
determination of the Borrowing Base.

         SECTION 6.1.11. ENVIRONMENTAL REPORT AND QUESTIONNAIRE. The
Administrative Agent shall have received copies of existing Phase I
environmental assessments in the Borrower's possession with respect to the
Mortgaged Properties and completed and current environmental disclosure
questionnaires and such other information with respect to the ownership and past
use of the Mortgaged Properties included in the initial determination of the
Borrowing Base as the Administrative Agent and the Lenders may reasonably
request, and such reports and questionnaire shall be satisfactory in form,
substance and scope to the Administrative Agent and the Lenders.

         SECTION 6.1.12. BUDGET. The Administrative Agent shall have received a
budget for the Borrower for the following twelve (12) month period, in form,
scope and detail reasonably satisfactory to the Administrative Agent and the
Required Lenders.

         SECTION 6.1.13. FINANCIAL STATEMENTS. The Administrative Agent shall
have received a consolidated balance sheet, income and cash flow statements and
statement of stockholders' equity of the Borrower and its consolidated
Subsidiaries for the years 1997 and 1998, audited by PriceWaterhouseCoopers LLP
and prepared in accordance with GAAP.

         SECTION 6.1.14. CONSENTS, ETC. The Administrative Agent shall have
received certified copies of all documents evidencing any necessary Consents and
Mortgage


                                      -61-
<PAGE>   69

Consents in connection with this Agreement, all in form and substance reasonably
satisfactory to the Administrative Agent.

         SECTION 6.1.15. SHAREHOLDER ACKNOWLEDGMENT. The Administrative Agent
shall have received duly executed counterparts of an acknowledgment and consent,
in form and substance satisfactory to the Administrative Agent, from the
Borrower and each Initial Holder to the effect that each of them acknowledges
and agrees that (a) the Restricted Payment Test under this Agreement requires
that, prior to making any Distribution Payment with respect to the Series B
Preferred, the Borrower must obtain the consent of all of the Lenders, and (b)
notwithstanding the terms of any agreement between such Initial Holder and the
Borrower, without the prior written consent of all of the Lenders, no redemption
of any of the Series B Preferred shall be requested, required or exercised so
long as any of the Obligations remain unpaid or unperformed.

         SECTION 6.1.16. COMPLIANCE WITH REPRESENTATIONS AND WARRANTIES. The
Administrative Agent shall have received a certificate from an Authorized
Officer of the Borrower stating that all representations and warranties
contained in Article VII are true and correct in all material respects as of the
Effective Date.

         SECTION 6.1.17. AMENDED SECURITY DOCUMENTS, ETC. The Administrative
Agent shall have received all documents, instruments and agreements amending,
supplementing or modifying the mortgages, security agreements, pledge
agreements, guaranties and other loan documents previously given under the
Existing Credit Agreement to provide that such documents, instruments and
agreements secure the Obligations, in each case pursuant to instruments in form
and substance satisfactory to the Administrative Agent and its counsel.

         SECTION 6.1.18. CLOSING FEES, EXPENSES, ETC. The Administrative Agent
shall have received, for its own account, or for the account of each Lender, as
the case may be, all reasonable fees, costs and expenses due and payable
pursuant to Sections 3.3 and 11.3, if then invoiced.

         SECTION 6.1.19. OTHER DOCUMENTS. The Administrative Agent and each
Lender shall have received such other instruments and documents as it may
reasonably request.

         SECTION 6.2. INCLUSION OF HYDROCARBON INTERESTS IN THE BORROWING BASE.
The inclusion of any additional Hydrocarbon Interests in the Borrowing Base is
subject to the following conditions having been satisfied and receipt by the
Administrative Agent and the Required Lenders of the following documents, in
each case with respect to each Hydrocarbon Interests and related Oil and Gas
Properties which the Borrower requests be included in the Borrowing Base, each
of which conditions and documents shall be satisfactory to the Administrative
Agent and the Required Lenders in form and substance.



                                      -62-
<PAGE>   70



         SECTION 6.2.1. ENVIRONMENTAL REPORT AND QUESTIONNAIRE. The
Administrative Agent shall have received Phase I environmental assessments as of
a recent date prepared by an environmental consulting firm as shall be
acceptable to the Administrative Agent, a completed environmental disclosure
questionnaire and such other information with respect to the ownership and past
use of the Mortgaged Properties relating to such Hydrocarbon Interests as the
Administrative Agent and the Lenders may reasonably request, and such reports
and questionnaire shall be satisfactory in form, substance and scope to the
Administrative Agent and the Required Lenders.

         SECTION 6.2.2. MORTGAGE. The Administrative Agent shall have received
counterparts of a Mortgage relating to such Hydrocarbon Interests and related
Oil and Gas Properties, dated as of a recent date, duly executed by the Borrower
and/or its Subsidiaries, as applicable, together with

                  (a) evidence of the completion (or satisfactory arrangements
         for the completion) of all recordings and filings of the Mortgage as
         may be necessary or, in the reasonable opinion of the Administrative
         Agent, desirable effectively to create a valid, perfected first
         priority Lien against the Properties purported to be covered thereby;

                  (b) favorable mortgagee's title opinions in favor of the
         Administrative Agent (in form and substance and issued by title counsel
         satisfactory to the Administrative Agent, substantially in the form of
         Exhibit I-2 hereto), with respect to the Property purporting to be
         covered by the Mortgage setting forth the working interest and net
         revenue interest of the Borrower or its Subsidiary in such Properties
         and opining that the Borrower's or such Subsidiary's title to such
         property is good and marketable and valid and that the interests
         created by the Mortgage constitute valid first Liens thereon free and
         clear of all defects and encumbrances other than encumbrances permitted
         by Section 8.2.3 or otherwise as approved by the Administrative Agent;
         and

                  (c) such other approvals, opinions, or documents as the
         Administrative Agent may reasonably request.

         SECTION 6.2.3. UCC SEARCHES. The Administrative Agent shall have
received Uniform Commercial Code Requests for Information or Copies (UCC Form
11) or similar search reports certified by a party acceptable to the
Administrative Agent, dated as of a recent date, listing all effective financing
statements which name each Obligor (under its present name and any previous
names) pledging such additional Hydrocarbon Interests as the debtor and which
are filed in the jurisdictions in which a Mortgage is to be filed, together with
copies of such financing


                                      -63-
<PAGE>   71

statements (none of which shall cover any collateral described in any such
Mortgage) other than financing statements in favor of Administrative Agent and
financing statements previously delivered to Administrative Agent and approved.

         SECTION 6.2.4. EVIDENCE OF INSURANCE. The Administrative Agent shall
have received certificates of insurance satisfactory to it evidencing the
existence of all insurance required to be maintained by the Borrower by this
Agreement and the other Loan Documents with respect to the Hydrocarbon Interests
and related Oil and Gas Properties being added to the Borrowing Base.

         SECTION 6.2.5. ENGINEERING REPORTS. The Administrative Agent and the
Lenders shall have received an Engineering Report, dated as of a recent date
from a petroleum engineer acceptable to the Administrative Agent, as to the
Hydrocarbon Interests being added to the Borrowing Base.

         SECTION 6.2.6. MATERIAL CONTRACTS; SECURITY AGREEMENT. The
Administrative Agent shall have received true and correct copies, certified by
the Borrower, and approved the form and substance of, each Material Contract
related to the Hydrocarbon Interests being added to the Borrowing Base. Further,
if requested, the Administrative Agent shall have received duly executed
counterparts of a Security Agreement, or, if applicable, amendments to an
existing Security Agreement, providing that such Material Contracts shall be
collateral for the Obligations (and if requested, such Material Contracts shall
by their terms be assignable to the Administrative Agent as collateral for the
Obligations) and all required Consents and Mortgage Consents.

         SECTION 6.2.7. GUARANTIES. The Administrative Agent shall have
received duly executed counterparts of a Guaranty from any Material Subsidiary
of the Borrower which is adding Hydrocarbon Interests to the Borrowing Base,
unless such a Guaranty has already been obtained in connection with a previous
addition to the Borrowing Base.

         SECTION 6.2.8. PLEDGE AGREEMENT. The Administrative Agent shall have
received duly executed counterparts of a Pledge Agreement from the Borrower or
any of its Subsidiaries pledging the Capital Stock or partnership interests of
each Material Subsidiary that is acquiring or owns Hydrocarbon Interests being
added to the Borrowing Base, unless such a Pledge Agreement has already been
obtained, accompanied by the original share certificate evidencing such Capital
Stock or partnership interests and executed stock powers (in blank) and the
evidence of satisfactory arrangement for the completion of all filings and
recordings of the Pledge Agreement as may be necessary or, in the reasonable
opinion of the Lender, desirable, effectively to create a valid, perfected first
priority lien against and security interest in the collateral covered thereby.




                                      -64-
<PAGE>   72



         SECTION 6.2.9. OTHER DOCUMENTS. The Administrative Agent shall have
received such other instruments and documents as it may reasonably request,
including pursuant to Section 8.1.7.

         SECTION 6.3. ALL CREDIT EXTENSIONS. The obligation of each Lender to
make any Credit Extension (including the initial Credit Extension) shall be
subject to the satisfaction of each of the conditions precedent set forth in
this Section 6.3.

         SECTION 6.3.1. COMPLIANCE WITH WARRANTIES, NO DEFAULT, ETC. Both
before and after giving effect to any Credit Extension (but, if any Default of
the nature referred to in Section 9.1.5 shall have occurred with respect to any
other Indebtedness, without giving effect to the application, directly or
indirectly, of the proceeds of any Borrowing) the following statements shall be
true and correct

                  (a) the representations and warranties set forth in Article
         VII (excluding, however, those contained in Section 7.9) shall be true
         and correct in all material respects with the same effect as if then
         made (unless stated to relate solely to an earlier date, in which case
         such representations and warranties shall be true and correct as of
         such earlier date);

                  (b) except as disclosed by the Borrower to the Administrative
         Agent and the Lenders pursuant to Section 7.9

                           (i) no labor controversy, litigation, arbitration or
                  governmental investigation or proceeding shall be pending or,
                  to the knowledge of the Borrower, threatened against the
                  Borrower or any of its Subsidiaries which has or might
                  reasonably be expected to have a Material Adverse Effect; and

                           (ii) no development shall have occurred in any labor
                  controversy, litigation, arbitration or governmental
                  investigation or proceeding disclosed pursuant to Section 7.9
                  which has or might reasonably be expected to have a Material
                  Adverse Effect; and

                  (c) no Default shall have then occurred and be continuing, and
         neither the Borrower nor any other Obligor shall be in material
         violation of any Applicable Law or court order or decree if such
         violation has or might reasonably be expected to have a Material
         Adverse Effect.

         SECTION 6.3.2. CREDIT REQUEST. The Administrative Agent shall have
received a Borrowing Request or Issuance Request, as the case may be, for such
Credit Extension. Each of the delivery of a Borrowing Request or an Issuance
Request and the acceptance by the Borrower of the proceeds of the Borrowing or
the issuance of the Letter of Credit as applicable, shall constitute a
representation and warranty by


                                      -65-
<PAGE>   73

the Borrower that on the date of such Borrowing (both immediately before and
after giving effect to such Borrowing and the application of the proceeds
thereof) or the issuance of the Letter of Credit, as applicable, the statements
made in Section 6.3.1 are true and correct.

         SECTION 6.3.3. SATISFACTORY LEGAL FORM. All documents executed or
submitted pursuant hereto by or on behalf of the Borrower or any of its
Subsidiaries shall be reasonably satisfactory in form and substance to the
Administrative Agent and its counsel; the Administrative Agent and its counsel
shall have received all information, approvals, opinions, documents or
instruments as the Administrative Agent or its counsel may reasonably request.


                                   ARTICLE VII

                         REPRESENTATIONS AND WARRANTIES

         In order to induce the Administrative Agent, each Issuer and each
Lender to enter into this Agreement and to make Loans and to issue Letters of
Credit hereunder, the Borrower represents and warrants unto the Administrative
Agent, each Issuer and each Lender as set forth in this Article VII.

         SECTION 7.1. ORGANIZATION, ETC. The Borrower is a Texas corporation and
each of its Subsidiaries is a corporation or limited partnership, validly
organized and existing and in good standing under the laws of the jurisdiction
of its organization, is duly qualified to do business and is in good standing as
a foreign corporation or limited partnership, as the case may be, in each
jurisdiction where the nature of its business requires such qualification, and
has full power and authority and holds all requisite Approvals to enter into and
perform its Obligations under this Agreement, the Notes and each other Loan
Document to which it is a party and to own and hold under lease its Property and
to conduct its business substantially as currently conducted by it (other than
where failure to be so qualified or in good standing or failure to hold such
licenses, permits and other approvals would not reasonably be expected to have a
Material Adverse Effect). On the Effective Date, the Principal Shareholders own,
on a fully diluted basis, not less than 63% of the issued and outstanding shares
of the Capital Stock of the Borrower. The Initial Holders own all of the Series
B Preferred. Other than the Series B Preferred, no holder of any of the Capital
Stock of the Borrower is entitled to receive any Distribution Payment as a
matter of right, and all Distribution Payments to all shareholders of the
Borrower (other than the holders of Series B Preferred) may be made or not at
the discretion of the Borrower. The Borrower is the sole shareholder of Future
California and each of the Partners. The Partners are the sole partners of the
Partnership Subsidiaries. On the Effective Date, the Borrower has no
Subsidiaries other than those listed in Schedule II.



                                      -66-
<PAGE>   74


         SECTION 7.2. DUE AUTHORIZATION, NON-CONTRAVENTION, ETC. The execution,
delivery and performance by the Borrower and each other Obligor of this
Agreement, the Notes and each other Loan Document executed or to be executed by
it are within the Borrower's and each such Obligor's corporate (or partnership
or other, as the case may be) powers, have been duly authorized by all necessary
corporate (or partnership or other, as the case may be) action, and do not

                  (a) contravene the Borrower's or such Obligor's Organic
         Documents;

                  (b) contravene or result in any violation of or default under
         any Applicable Law or any contractual restriction, court decree or
         order, in each case binding on or affecting the Borrower or any other
         Obligor or any of their respective Properties, businesses, assets or
         revenues, including the Certificate of Designations of Cumulative
         Redeemable Preferred Stock, Series B issued by the Borrower, the
         Shareholders' Agreement or the Stock Purchase Agreement; or

                  (c) result in, or require the creation or imposition of, any
         Lien on (except for the Liens of the Loan Documents) any of the
         Borrower's or any other Obligor's respective Properties, businesses,
         assets or revenues.

         SECTION 7.3. GOVERNMENT APPROVAL, REGULATION, ETC. No authorization
or approval or other action by, and no notice to or filing with, any Government
Agency or other Person is required for the due execution, delivery or
performance by the Borrower or any other Obligor of this Agreement, the Notes or
any other Loan Document to which it is a party.

         SECTION 7.4. INVESTMENT COMPANY ACT. Neither the Borrower nor any of
its Subsidiaries is an "investment company" within the meaning of the Investment
Company Act of 1940, as amended.

         SECTION 7.5. PUBLIC UTILITY HOLDING COMPANY ACT. Neither the Borrower
nor any of its Subsidiaries is a "holding company" or a "subsidiary company" of
a "holding company", or an "affiliate" of a "holding company" or of a
"subsidiary company" of a "holding company", within the meaning of the Public
Utility Holding Company Act of 1935, as amended.

         SECTION 7.6. VALIDITY, ETC. This Agreement constitutes, and the Notes
and each other Loan Document executed by the Borrower or any of its Subsidiaries
will, on the due execution and delivery thereof, constitute, the legal, valid
and binding obligations of the Borrower or such Subsidiaries, as applicable,
enforceable in accordance with their respective terms, and each Loan Document
executed pursuant hereto by each other Obligor will, on the due execution and
delivery thereof by such Obligor, be the legal, valid and binding obligation of
such Obligor enforceable in


                                      -67-
<PAGE>   75

accordance with its terms, in each case subject to the effect of any applicable
bankruptcy, insolvency, reorganization, moratorium or similar laws affecting
creditors' rights generally.

         SECTION 7.7. FINANCIAL INFORMATION. Each of (i) the audited
consolidated balance sheet of the Borrower and each of its consolidated
Subsidiaries as at December 31, 1998, and the related consolidated audited
statements of operations and cash flow of the Borrower and such Subsidiaries,
and (ii) the unaudited consolidated balance sheet of the Borrower and each of
its consolidated Subsidiaries as at June 30, 1999, and the related consolidated
unaudited statements of operations and cash flow of the Borrower and such
Subsidiaries, copies of which have been furnished to the Administrative Agent
and each Lender, have been prepared in accordance with GAAP consistently
applied, and present fairly the consolidated financial condition of the
partnerships and corporations covered thereby as at the date thereof and the
results of their audited operations for the period then ended.

         SECTION 7.8. NO MATERIAL ADVERSE CHANGE. Since the date of the
audited financial statements described in Section 7.7, there has been no change
in the financial condition, operations, assets, business, Properties or
prospects of the Borrower or its Subsidiaries that has or might reasonably be
expected to have a Material Adverse Effect. As at June 30, 1999, the Tangible
Net Worth of the Borrower and its consolidated Subsidiaries was not less than
$52,440,614.

         SECTION 7.9. LITIGATION, LABOR CONTROVERSIES, ETC. There is no
pending or, to the knowledge of the Borrower, threatened litigation, action,
proceeding, or labor controversy affecting the Borrower or any of its
Subsidiaries, or any of their respective Properties, businesses, assets or
revenues, which has or might reasonably be expected to have a Material Adverse
Effect, except as disclosed in Item 7.9 ("Litigation") of the Disclosure
Schedule.

         SECTION 7.10. OWNERSHIP OF PROPERTIES. The Borrower and each of its
Subsidiaries has good and marketable title to its Properties (including, without
limitation, all Hydrocarbon Interests), free and clear of all Liens except (a)
those referred to in the financial statements referred to in Section 7.7, (b) as
disclosed to the Lenders in the Disclosure Schedule or (c) as permitted by
Section 8.2.3. After giving full effect to all Liens permitted under Section
8.2.3, the Borrower and its Subsidiaries own the net interests in Hydrocarbons
produced from the Oil and Gas Properties as reflected in the most recent
Engineering Report, and neither the Borrower nor any of its Subsidiaries is
obligated to bear costs or expenses in respect of the Oil and Gas Properties in
excess of its working interest percentage as reflected in the most recent
Engineering Report. The Administrative Agent has received currently effective,
duly executed Mortgages and other Loan Documents encumbering Oil and Gas
Properties constituting at least 90% of the amount of Proven Reserves to which
value is given in the determination of the current Borrowing Base.



                                      -68-
<PAGE>   76



         SECTION 7.11. TAXES. The Borrower and each of its Subsidiaries has
filed all tax returns and reports required by Applicable Law to have been filed
by it and has paid all taxes and governmental charges thereby shown to be owing,
except any such taxes or charges which are being diligently contested in good
faith by appropriate proceedings and for which adequate reserves in accordance
with GAAP shall have been set aside on its books.

         SECTION 7.12. PENSION AND WELFARE PLANS. During the
twelve-consecutive-month period prior to the Effective Date and prior to the
date of any Borrowing hereunder, no steps have been taken to terminate any
Pension Plan, and no contribution failure has occurred with respect to any
Pension Plan sufficient to give rise to a Lien under section 302(f) of ERISA. No
condition exists or event or transaction has occurred with respect to any
Pension Plan which might result in the incurrence by the Borrower or any member
of the Controlled Group of any material liability, fine or penalty. Except as
disclosed in Item 7.12 ("Employee Benefit Plans") of the Disclosure Schedule,
neither the Borrower nor any member of the Controlled Group has any contingent
liability with respect to any post-retirement benefit under a Welfare Plan,
other than liability for continuation coverage described in Part 6 of Title I of
ERISA.

         SECTION 7.13. COMPLIANCE WITH LAW. Neither the Borrower nor any of
its Subsidiaries (a) is in violation of any Applicable Law of, or the terms of
any Approval issued by, any Government Agency; or (b) has failed to obtain any
Approval necessary to ownership of any of their respective Properties or the
conduct of their respective business (including without limitation any such
authorization from the Federal Energy Regulatory Commission, the Minerals
Management Service or any state conservation commission or similar body); which
violation or failure could reasonably be expected to have a Material Adverse
Effect.

         SECTION 7.14. CLAIMS AND LIABILITIES. Except as disclosed to the
Lenders in Item 7.14 ("Claims and Liabilities") of the Disclosure Schedule,
neither the Borrower nor any of its Subsidiaries has accrued any liabilities
under gas purchase contracts for gas not taken, but for which it is liable to
pay if not made up and which, if not paid, would have a Material Adverse Effect.
Except as disclosed to the Lenders in Item 7.14 of the Disclosure Schedule, no
claims exist against the Borrower or any of its Subsidiaries for gas imbalances
which claims if adversely determined would have a Material Adverse Effect. No
purchaser of product supplied by the Borrower or any of its Subsidiaries has any
claim against the Borrower or any of its Subsidiaries for product paid for, but
for which delivery was not taken as and when paid for, which claim if adversely
determined would have a Material Adverse Effect.

         SECTION 7.15. NO PROHIBITION ON PERFECTION OF SECURITY DOCUMENTS. None
of the terms or provisions of any indenture, mortgage, deed of trust, agreement
or other instrument to which the Borrower or any of its Subsidiaries is a party
or by which the


                                      -69-
<PAGE>   77

Borrower or any of its Subsidiaries or the property of the Borrower or any of
its Subsidiaries is bound prohibit the filing or recordation of any of the Loan
Documents or any other action which is necessary or appropriate in connection
with the perfection of the Liens evidenced and created by any of the Loan
Documents.

         SECTION 7.16. SOLVENCY. Neither the Borrower nor any of its
Subsidiaries is "insolvent", as such term is used and defined in the United
States Bankruptcy Code, 11 U.S.C. Section 101, et seq.

         SECTION 7.17. ENVIRONMENTAL WARRANTIES. As a reasonable and prudent
operator of oil and gas producing properties, in the ordinary course of its
business, the Borrower has conducted, with respect to its existing Oil and Gas
Properties, and, on an ongoing basis, conducts a review of the effect of
Environmental Laws on business, operations and properties of the Borrower and
its Subsidiaries, in the course of which it identifies and evaluates associated
liabilities and costs (including any capital or operating expenditures required
for Remedial Action or other clean-up or closure of Properties presently owned
or operated, any capital or operating expenditures required for Remedial Action
or otherwise to achieve or maintain compliance with environmental protection
standards imposed by Environmental Law or as a condition of any Approval or
contract, any related constraints on operating activities, including any
periodic or permanent shutdown of any facility or reduction in the level of or
change in the nature of operations conducted thereat and any actual or potential
liabilities to third parties, including employees, and any related costs and
expenses). On the basis of this review, the Borrower has reasonably concluded
that, except as disclosed in Item 7.17 ("Environmental Matters") of the
Disclosure Schedule, to the best of its knowledge after due inquiry:

                  (a) all facilities and Property (including underlying
         groundwater) owned, leased or operated by the Borrower or any of its
         Subsidiaries have been, and continue to be, owned, leased or operated
         by the Borrower and its Subsidiaries in material compliance with all
         Environmental Laws;

                  (b) there have been no past, and there are no pending or
         threatened

                           (i) claims, complaints, notices or inquiries to, or
                  requests for information received by, the Borrower or any of
                  its Subsidiaries with respect to any alleged violation of any
                  Environmental Law, that, singly or in the aggregate, have or
                  may reasonably be expected to have a Material Adverse Effect,
                  or

                           (ii) claims, complaints, notices or inquiries to, or
                  requests for information received by, the Borrower or any of
                  its Subsidiaries regarding potential liability under any
                  Environmental Law or under any common law theories relating to
                  operations or the condition of any facilities or


                                      -70-
<PAGE>   78

                  Property (including underlying groundwater) owned, leased or
                  operated by the Borrower or any of its Subsidiaries that,
                  singly or in the aggregate, have, or may reasonably be
                  expected to have a Material Adverse Effect;

                  (c) there have been no Releases of Hazardous Materials at, on
         or under any Property now or previously owned or leased by the Borrower
         or any of its Subsidiaries that, singly or in the aggregate, have, or
         may reasonably be expected to have, a Material Adverse Effect;

                  (d) each of the Borrower or any of its Subsidiaries has been
         issued and is in compliance with all Approvals relating to
         environmental matters and necessary or desirable for its business
         (other than where failure to so obtain or be in compliance with such
         Approvals and other Approvals would not reasonably be expected to
         result in a Material Adverse Effect);

                  (e) no Property now or previously owned, leased or operated by
         the Borrower or any of its Subsidiaries is listed or proposed for
         listing on the National Priorities List pursuant to CERCLA, or, to the
         extent that such listing may, singly or in the aggregate, have, or may
         reasonably be expected to have a Material Adverse Effect, on the
         CERCLIS or on any other federal or state list of sites requiring
         investigation or clean-up;

                  (f) there are no underground storage tanks, active or
         abandoned, including petroleum storage tanks, on or under any Property
         now or previously owned, leased or operated by the Borrower or any of
         its Subsidiaries that, singly or in the aggregate, have, or may
         reasonably be expected to have, a Material Adverse Effect;

                  (g) neither the Borrower nor any Subsidiary of the Borrower
         has directly transported or directly arranged for the transportation of
         any Hazardous Material to any location which is listed or proposed for
         listing on the National Priorities List pursuant to CERCLA, or, to the
         extent that such listing may, singly or in the aggregate, have, or may
         reasonably be expected to have a Material Adverse Effect, on the
         CERCLIS or on any federal or state list or which is the subject of
         federal, state or local enforcement actions or other investigations
         which may lead to material claims against the Borrower or such
         Subsidiary for any remedial work, damage to natural resources or
         personal injury, including claims under CERCLA;

                  (h) there are no polychlorinated biphenyls, radioactive
         materials or friable asbestos present at any Property now or previously
         owned or leased by the Borrower or any of its Subsidiaries that, singly
         or in the aggregate, have, or may reasonably be expected to have, a
         Material Adverse Effect; and




                                      -71-
<PAGE>   79



                  (i) no condition exists at, on or under any property now or
         previously owned or leased by the Borrower or any of its Subsidiaries
         which, with the passage of time, or the giving of notice or both, would
         give rise to material liability under any Environmental Law that,
         singly or in the aggregate have, or may reasonably be expected to have
         a Material Adverse Effect.

         SECTION 7.18. REGULATIONS T, U AND X. Neither the Borrower nor any of
its Subsidiaries is engaged in the business of extending credit for the purpose
of purchasing or carrying margin stock, and no proceeds of any Loans will be
used for a purpose which violates, or would be inconsistent with, F.R.S. Board
Regulation T, U or X, so long as the amount paid for such margin stock does not
exceed the lesser of (i) five-percent (5%) of the Borrowing Base at the time of
such acquisition, and (ii) twenty-five percent (25%) (or such lesser percentage
as may be required by then Applicable Law) of the value of the Borrower's
assets. Terms for which meanings are provided in F.R.S. Board Regulation T, U or
X or any regulations substituted therefor, as from time to time in effect, are
used in this Section with such meanings.

         SECTION 7.19. INSURANCE. The Borrower and its Subsidiaries have the
benefit of the insurance coverage described in the certificates of insurance
delivered pursuant to Section 6.1.9 and required to be maintained pursuant to
Section 8.1.4.

         SECTION 7.20. YEAR 2000 COMPLIANCE.

                  (a) The Borrower has (i) initiated a review and assessment of
         all areas within its and each of its Subsidiaries' business and
         operations (including those affected by suppliers and vendors) that
         could be adversely affected by the "Year 2000 Problem" (that is, the
         risk that computer applications (as well as imbedded microchips) used
         by the Borrower or any of its Subsidiaries (or its suppliers and
         vendors) may be unable to recognize and perform properly date-sensitive
         functions involving certain dates prior to and any date after December
         31, 1999), (ii) developed a plan and time line for addressing the Year
         2000 Problem on a timely basis, and (iii) to date, implemented that
         plan in accordance with that timetable.

                  (b) The Borrower reasonably believes that all computer
         applications (including those of its and its Subsidiaries' suppliers
         and vendors) that are material to its or any of its Subsidiaries'
         business and operations will on a timely basis be able to perform
         properly date-sensitive functions for all dates before and after
         January 1, 2000 (that is, be "Year 2000 Compliant"), except to the
         extent that a failure to do so could not reasonably be expected to have
         Material Adverse Effect.

         SECTION 7.21. ACCURACY OF INFORMATION. All factual information
heretofore or contemporaneously furnished by or on behalf of the Borrower or any
of its Subsidiaries in writing to the Administrative Agent, the Issuers or the
Lenders for purposes of or


                                      -72-
<PAGE>   80

in connection with this Agreement or any transaction contemplated hereby
(including without limitation each Engineering Report) is, and all other such
factual information hereafter furnished by or on behalf of the Borrower to the
Administrative Agent, the Issuers or the Lenders will be, true and accurate in
every material respect on the date as of which such information is dated or
certified and as of the date of execution and delivery of this Agreement by the
Lenders, and such information is not, or shall not be, as the case may be,
incomplete by omitting to state any material fact necessary to make such
information not misleading. It is understood and agreed, however, that (i) each
Engineering Report is necessarily based upon economic assumptions and
professional opinions, estimates, and projections, (ii) any financial projection
which the Borrower or any of the Borrower's representatives has provided or may
provide in connection with the transactions contemplated hereby (the
"Projections") are similarly based on economic assumptions, opinions and
estimates, (iii) the Borrower makes no representation or warranty that such
assumptions, opinions, estimates and projections will ultimately prove to have
been accurate, (iv) the Borrower makes no representation or warranty with
respect to any price or cost projections furnished by the Administrative Agent
or any Lender for use in preparing any Engineering Report, and (v) no
representation or warranty is made with respect to the extent or value of any
Hydrocarbon Interests to which no Proven Reserves are attributed, so long as
such Hydrocarbon Interests are not shown in or covered by any Engineering Report
as constituting Proven Reserves; provided that, notwithstanding the foregoing
limitations concerning Projections, the Borrower represents and warrants, with
respect to all Projections that have been or will be provided by the Borrower or
any of its representatives or Subsidiaries, that such Projections have been or
will be, as the case may be, prepared in good faith based upon assumptions that
Borrower's management believed or believes, as the case may be, to be reasonable
at the time such Projections were or are prepared and that the factual
information furnished by the Borrower or any of its Subsidiaries to the
engineers and others who prepared such Projections was true and correct in all
material respects.


                                  ARTICLE VIII

                                    COVENANTS

         SECTION 8.1. AFFIRMATIVE COVENANTS. The Borrower agrees with the
Administrative Agent, each Lender and each Issuer that, until all Commitments
have terminated and all Obligations have been paid and performed in full, the
Borrower will perform the obligations set forth in this Section 8.1.

         SECTION 8.1.1. FINANCIAL INFORMATION, REPORTS, NOTICES, ETC. The
Borrower will furnish, or will cause to be furnished, to the Administrative
Agent and each Lender copies of the following financial statements, reports,
notices and information:



                                      -73-
<PAGE>   81


                  (a) as soon as available and in any event within forty-five
         (45) days after the end of each of the first three Fiscal Quarters of
         each Fiscal Year of the Borrower, consolidated and consolidating
         balance sheets of the Borrower and its consolidated Subsidiaries as of
         the end of such Fiscal Quarter and consolidated and consolidating
         statements of operations and cash flow of the Borrower and its
         consolidated Subsidiaries for such Fiscal Quarter and for the period
         commencing at the end of the previous Fiscal Year and ending with the
         end of such Fiscal Quarter, certified by the chief financial Authorized
         Officer of the Borrower;

                  (b) as soon as available and in any event within ninety (90)
         days after the end of each Fiscal Year of the Borrower, a copy of the
         annual audit report for such Fiscal Year for the Borrower and its
         consolidated Subsidiaries, including therein the consolidated balance
         sheets of the Borrower as of the end of such Fiscal Year and statements
         of operations and cash flow of the Borrower and its consolidated
         Subsidiaries for such Fiscal Year, in each case certified (without any
         Impermissible Qualification) in a manner reasonably acceptable to the
         Administrative Agent by PriceWaterhouseCoopers L.L.P. or an independent
         public accountant acceptable to the Administrative Agent and the
         Required Lenders, together with a report from such accountants
         containing a computation of, and showing compliance with, each of the
         financial ratios and restrictions contained in Section 8.2.4 and to the
         effect that, in making the examination necessary for the signing of
         such annual report by such accountants, they have not become aware of
         any Default that has occurred and is continuing or, if they have become
         aware of such Default, describing such Default and the steps, if any,
         being taken to cure it;

                  (c) concurrently with the delivery of the financial statements
         referred to in clauses (a) and (b), a certificate, executed by the
         chief financial Authorized Officer of the Borrower, showing (in
         reasonable detail and with appropriate calculations and computations in
         all respects reasonably satisfactory to the Administrative Agent)
         compliance with the financial covenants set forth in Section 8.2.4 and
         also certifying, to such Authorized Officer's best knowledge, that no
         Default has occurred and is then outstanding;

                  (d) on or prior to December 31st of each calendar year, annual
         financial budget for the Borrower and its Subsidiaries for the
         following calendar year, in form, scope and detail reasonably
         satisfactory to the Administrative Agent and the Required Lenders;

                  (e) upon request of the Administrative Agent, on or prior to
         December 31st of each calendar year, a capital budget for the Borrower
         and its Subsidiaries for the following calendar year, in form, scope
         and detail reasonably satisfactory to the Administrative Agent and the
         Required Lenders;



                                      -74-
<PAGE>   82



                  (f) as soon as possible and in any event within three (3)
         Business Days after the Borrower knows (or, in the exercise of
         reasonable diligence, should have known) of the occurrence of each
         Default and any event which has or is reasonably likely to have a
         Material Adverse Effect, a statement of the chief financial Authorized
         Officer of the Borrower setting forth details of such Default or event
         and the action which the Borrower has taken and proposes to take with
         respect thereto;

                  (g) as soon as possible and in any event within three (3)
         Business Days after (x) the occurrence of any adverse development with
         respect to any litigation, action, proceeding or labor controversy
         described in Section 7.9 or (y) the commencement of any litigation,
         action, proceeding or labor controversy of the type described in
         Section 7.9, notice thereof and copies of all documentation relating
         thereto;

                  (h) as soon as possible and in any event within ten (10) days
         after any responsible officer of the Borrower has actual knowledge
         thereof, notice of

                           (i) any claim by any Person against the Borrower or
                  any of its Subsidiaries of nonpayment of, or

                           (ii) any attempt by any Person to collect upon or
                  enforce any accounts payable of the Borrower or any of its
                  Subsidiaries, in the case of any single account payable in
                  excess of $250,000, or in the case of all accounts payable in
                  the aggregate in excess of $500,000;

                  (i) upon, but in no event later than ten (10) days after, any
         responsible officer of the Borrower or any of its Subsidiaries becomes
         aware of (i) any and all enforcement, cleanup, removal or other
         governmental or regulatory actions instituted, completed or threatened
         or other environmental claims against the Borrower or any Subsidiary or
         any of its Properties pursuant to any applicable Environmental Laws
         which could have a Material Adverse Effect, and (ii) any environmental
         or similar condition on any real property adjoining or in the vicinity
         of the property of the Borrower or any Subsidiary that could reasonably
         be anticipated to cause such property or any part thereof to be subject
         to any restrictions on the ownership, occupancy, transferability or use
         of such property under any Environmental Laws;

                  (j) as soon as available and in any event within sixty (60)
         days after January 1st of each calendar year, an Engineering Report
         from an independent petroleum engineering firm acceptable to the
         Administrative Agent, and as soon as available and in any event within
         sixty (60) days after July 1st of each calendar year, an Engineering
         Report prepared by a reserve engineer employed by the Borrower, unless
         the Administrative Agent, at least sixty (60) days


                                      -75-
<PAGE>   83

         before the required delivery date of such Engineering Report, has
         requested that it be prepared by an independent petroleum engineering
         firm reasonably acceptable to the Administrative Agent;

                  (k) promptly after (i) the sending or filing thereof, copies
         of all periodic and other reports distributed by the Borrower to its
         shareholders generally, (ii) the sending or filing thereof, all reports
         and registration statements which the Borrower or any of its
         Subsidiaries files with the Securities and Exchange Commission or any
         national securities exchange, (iii) the filing thereof, copies of all
         tariff and rate cases and other material reports filed with any
         regulatory authority, and (iv) receipt thereof, copies of all notices
         received from any regulatory authority concerning noncompliance by the
         Borrower or any of its Subsidiaries with any applicable regulations;

                  (l) immediately upon becoming aware of the institution of any
         steps by the Borrower or any other Person to terminate any Pension
         Plan, or the failure to make a required contribution to any Pension
         Plan if such failure is sufficient to give rise to a Lien under section
         302(f) of ERISA, or the taking of any action with respect to a Pension
         Plan which could result in the requirement that the Borrower furnish a
         bond (other than customary fidelity bonds under section 412 of ERISA)
         or other security to the PBGC or such Pension Plan, or the occurrence
         of any event with respect to any Pension Plan which could result in the
         incurrence by the Borrower of any material liability, fine or penalty,
         or any material increase in the contingent liability of the Borrower
         with respect to any post-retirement Welfare Plan benefit, notice
         thereof and copies of all documentation relating thereto;

                  (m) promptly after the Borrower discovers or determines that
         any computer application (including those of its suppliers or vendors)
         that is material to the businesses or operations of the Borrower and
         its Subsidiaries taken as a whole will not be Year 2000 Compliant on a
         timely basis, notice thereof and a copy of the Borrower's plan for
         dealing with such problem, except to the extent such failure could not
         reasonably be expected to have a Material Adverse Effect; and

                  (n) such other information respecting the condition or
         operations, financial or otherwise, of the Borrower or any of its
         Subsidiaries as any Lender through the Administrative Agent may from
         time to time reasonably request.

         SECTION 8.1.2. COMPLIANCE WITH LAWS, ETC. The Borrower will, and
will cause each of its Subsidiaries to, comply in all respects with all
Applicable Laws, (except where the failure to so comply would not reasonably be
expected to result in a Material Adverse Effect), such compliance to include
(without limitation):




                                      -76-
<PAGE>   84



                  (a) the maintenance and preservation of its existence, and
         qualification as a foreign entity, other than the failure to maintain,
         preserve or qualify a non-Material Subsidiary which would not
         reasonably be expected to have a Material Adverse Effect; provided that
         nothing in this Section shall prohibit mergers permitted under Section
         8.2.8, or the termination of the existence of a Subsidiary (other than
         a Material Subsidiary) if the Borrower in good faith determines that
         such termination is in the best interest of the Borrower; and

                  (b) the payment, before the same become delinquent, of all
         taxes, assessments and governmental charges imposed upon it or upon its
         property except to the extent being diligently contested in good faith
         by appropriate proceedings and for which adequate reserves in
         accordance with GAAP shall have been set aside on its books.

         SECTION 8.1.3. MAINTENANCE AND DEVELOPMENT OF PROPERTIES. The
Borrower will, and will cause each of its Subsidiaries to, maintain, preserve,
protect and keep its Properties in good repair, working order and condition
(ordinary wear and tear excepted), and make necessary and proper repairs,
renewals and replacements so that its business carried on in connection
therewith may be properly conducted at all times in accordance with standard
industry practices. In particular, the Borrower will, and will cause each of its
Subsidiaries to, operate or cause to be operated its Oil and Gas Properties as a
reasonable and prudent operator. The Borrower shall use its reasonable best
efforts to develop and bring into production in a prudent and businesslike
manner all proved developed non-producing reserves that the Required Lenders
have considered in their determination of the Borrowing Base.

         SECTION 8.1.4. INSURANCE. The Borrower will, and will cause each of
its Subsidiaries to, maintain or cause to be maintained with responsible
insurance companies insurance with respect to its properties and business
against such casualties and contingencies and of such types and in such amounts
as is customary in the case of similar businesses (including, where appropriate,
well control, operator's extra expense and remediation insurance) and will
furnish to the Administrative Agent, on or before December 31st each year, and,
at the Administrative Agent's request, at other reasonable intervals, a
certificate of an Authorized Officer of the Borrower setting forth the nature
and extent of all insurance maintained by the Borrower and its Subsidiaries in
accordance with this Section. The following shall apply to the insurance
required by this Section 8.1.4:

                  (a) Each policy for property insurance covering the Mortgaged
         Property shall show the Administrative Agent as loss payee;

                  (b) Each policy for liability insurance covering the Mortgaged
         Property shall show the Administrative Agent, the Lenders and the
         Issuers as additional insured;



                                      -77-
<PAGE>   85


                  (c) Each insurance policy covering the Mortgaged Property
         shall provide that at least thirty (30) days prior written notice of
         cancellation, reduction in amount or other change in coverage, or of
         lapse shall be given to the Administrative Agent by the insurer; and

                  (d) The Borrower shall, if so requested by the Administrative
         Agent, deliver to the Administrative Agent the original or a certified
         copy of each insurance policy covering the Mortgaged Property.

         SECTION 8.1.5. BOOKS AND RECORDS. The Borrower will, and will cause
each of its Subsidiaries to, keep books and records which accurately reflect all
of its material business affairs and transactions and permit the Administrative
Agent, each Issuer and each Lender or any of their respective representatives,
at reasonable times and intervals, to visit all of its offices, to discuss its
financial matters with its officers and, upon forty-eight (48) hours prior
notice to the Borrower, with the Borrower's independent public accountant (and
the Borrower hereby authorizes such independent public accountant to discuss the
Borrower's and its Subsidiaries' financial matters with the Administrative
Agent, the Issuers and the Lenders or their representatives whether or not any
representative of the Borrower is present) and to examine (and, at the expense
of the Borrower, photocopy extracts from) any of its books or other corporate
records. The Borrower shall pay any reasonable fees of such independent public
accountant incurred in connection with the Administrative Agent's or any
Issuer's or any Lender's exercise of their rights pursuant to this Section.
Furthermore, the Borrower will permit the Administrative Agent, or its agents,
at the cost and expense of the Borrower, to enter upon the Oil and Gas
Properties and all parts thereof, for the purpose of investigating and
inspecting the condition and operation thereof, and shall permit reasonable
access to the field offices and other offices, including the principal place of
business, of the Borrower to inspect and examine the Oil and Gas Properties.

         SECTION 8.1.6. ENVIRONMENTAL COVENANT. The Borrower will, and will
cause each of its Subsidiaries to,

                  (a) use, operate and maintain all of its facilities and
         Properties in material compliance with all Environmental Laws, keep all
         necessary Approvals relating to environmental matters in effect and
         remain in material compliance therewith, and handle all Hazardous
         Materials in material compliance with all applicable Environmental
         Laws;

                  (b) (i) immediately notify the Administrative Agent and
         provide copies upon receipt of all written claims, complaints, notices
         or inquiries relating to the condition of its facilities and Properties
         or compliance with Environmental Laws, (ii) use all reasonable efforts
         to have dismissed with prejudice any actions or proceedings relating to
         compliance with Environmental Laws which would reasonably be expected
         to have a Material Adverse Effect, and (iii) diligently


                                      -78-
<PAGE>   86

         pursue cure of any material underlying environmental problem which
         forms the basis of any such claim, complaint, notice or inquiry; and

                  (c) provide such information and certifications which the
         Administrative Agent may reasonably request from time to time to
         evidence compliance with this Section 8.1.6.

         SECTION 8.1.7. FURTHER ASSURANCES.

                  (a) The Borrower shall, and shall cause each of its
         Subsidiaries, upon the request of the Administrative Agent, to take
         such actions and to execute and deliver such documents and instruments
         as the Administrative Agent shall require to ensure that the
         Administrative Agent shall, at all times, have received currently
         effective, duly executed Loan Documents encumbering Oil and Gas
         Properties of the Borrower or any of its Subsidiaries not then subject
         to a Mortgage constituting 90% of the Proven Reserves to which value
         has been given in the then current Borrowing Base and satisfactory
         title evidence in form and substance reasonably acceptable to the
         Administrative Agent, in its reasonable business judgment, as to
         ownership of such Oil and Gas Properties; provided that, upon thirty
         (30) days notice to the Borrower, the Administrative Agent may require,
         and the Borrower and/or its Subsidiaries, as applicable, shall execute,
         acknowledge and deliver to the Administrative Agent, Mortgages
         effectively encumbering 100% of the Oil and Gas Properties of the
         Borrower and its Subsidiaries to which value is given in the
         determination of the then current Borrowing Base.

                  (b) If the Administrative Agent shall determine that, as of
         the date of any Borrowing Base Redetermination, the Borrower shall have
         failed to comply with the preceding Subsection (a), the Administrative
         Agent may (and, at the direction of the Required Lenders, shall) notify
         the Borrower in writing of such failure and, within thirty (30) days
         from and after receipt of such written notice by the Borrower, the
         Borrower and its Subsidiaries, as applicable, shall execute and deliver
         to the Administrative Agent supplemental or additional Loan Documents,
         in form and substance satisfactory to the Administrative Agent and its
         counsel, securing payment of the Notes and the other Obligations and
         covering additional assets not then encumbered by any Loan Documents
         (together with current valuations, Engineering Reports, and title
         evidence applicable to the additional assets collaterally assigned,
         each of which shall be in form and substance satisfactory to the
         Administrative Agent) such that the Administrative Agent shall have
         received currently effective duly executed Loan Documents encumbering
         Oil and Gas Properties constituting at least 90% (or, as provided in
         Section 8.1.7(a), 100%) of the amount of Proven Reserves to which value
         is given in the determination of the then current Borrowing Base and
         satisfactory title evidence in form and substance acceptable to the


                                      -79-
<PAGE>   87

         Administrative Agent in its reasonable business judgment as to
         ownership of such Oil and Gas Properties and the valid first Liens in
         favor of the Administrative Agent.

                  (c) Promptly upon the determination that any Subsidiary has
         become a Material Subsidiary, the Borrower will cause such Material
         Subsidiary to execute and deliver to the Administrative Agent a
         Guaranty and a Security Agreement and (if such Subsidiary has Oil and
         Gas Properties included in the Borrowing Base) a Mortgage, and the
         Borrower will enter into such amendments to the Pledge Agreement as are
         necessary to cause the stock or partnership interests, as the case may
         be, of such Material Subsidiary to become subject to the Pledge
         Agreement.

                  (d) The Borrower shall ensure that all written information,
         exhibits, certificates and reports furnished by or on behalf of the
         Borrower to the Administrative Agent do not and will not contain any
         untrue statement of material fact and do not and will not omit to state
         any material fact or any fact necessary to make the statements
         contained therein not misleading in light of the circumstances in which
         made, and will promptly disclose to the Administrative Agent and
         correct any defect or error that may be discovered therein or in any
         Loan Document or in the execution, acknowledgment or recordation
         thereof.

         SECTION 8.1.8. YEAR 2000 COMPLIANCE. The Borrower will promptly
notify the Administrative Agent in the event the Borrower discovers or
determines that any computer application (including those of its suppliers and
vendors) that is material to its or any of its Subsidiaries' business and
operations will not be Year 2000 Compliant on a timely basis, except to the
extent that such failure could not reasonably be expected to have a Material
Adverse Effect.

         SECTION 8.2. NEGATIVE COVENANTS. The Borrower agrees with the
Administrative Agent, each Lender and the Issuer that, until all Commitments
have terminated and all Obligations have been paid and performed in full, the
Borrower will perform the obligations set forth in this Section 8.2.

         SECTION 8.2.1. BUSINESS ACTIVITIES. The Borrower will not, and will
not permit any of its Subsidiaries to, engage in any business activity, except
those described in the first recital and such activities as may be incidental or
related thereto.

         SECTION 8.2.2. INDEBTEDNESS. The Borrower will not, and will not
permit any of its Subsidiaries to, create, incur, assume or suffer to exist or
otherwise become or be liable in respect of any Indebtedness, other than,
without duplication, the following:

                  (a) Indebtedness in respect of the Loans and other
         Obligations;



                                      -80-
<PAGE>   88


                  (b) Indebtedness in an aggregate principal amount not to
         exceed (i) $500,000 at any time outstanding which is incurred by the
         Borrower or any of its Subsidiaries to a vendor of any assets not
         prohibited from being acquired by Section 8.2.8 to finance its
         acquisition of such assets and (ii) $250,000 at any one time
         outstanding by the Borrower or any of its Subsidiaries which is secured
         by Liens described in Section 8.2.3(j);

                  (c) unsecured Indebtedness incurred in the ordinary course of
         business (including (i) open accounts extended by suppliers on normal
         trade terms in connection with purchases of goods and services and (ii)
         gas balancing, but excluding Indebtedness incurred through the
         borrowing of money or Contingent Liabilities);

                  (d) Hedging Obligations incurred pursuant to Hedging
         Agreements approved by the Administrative Agent pursuant to Section
         8.2.15;

                  (e) Contingent Obligations incurred to satisfy bonding
         requirements imposed by any Government Agency not to exceed, in the
         aggregate, $500,000, excluding any Letters of Credit;

                  (f) Indebtedness existing as of the Effective Date which is
         identified in Item 8.2.2(f) of the Disclosure Schedule and refinancings
         thereof; provided that the principal amount thereof is not increased
         beyond the amount outstanding thereunder on the Effective Date;

                  (g) Indebtedness in respect of Capitalized Lease Obligations
         in an amount not to exceed $500,000 at any time outstanding;

                  (h) Indebtedness owed by the Borrower to any of the
         Subsidiaries or by any Material Subsidiary of the Borrower to the
         Borrower or any Material Subsidiary;

                  (i) endorsements of negotiable instruments for collection in
         the ordinary course of business;

                  (j) Indebtedness of the Borrower and its Subsidiaries which
         are Investments to the extent permitted by Section 8.2.5(b);

                  (k) Additional Indebtedness not permitted by clauses (a)
         through (j) above, provided, however, that the aggregate amount of all
         Indebtedness incurred by the Borrower and its Subsidiaries pursuant to
         this clause (k) shall not exceed $500,000 at any one time outstanding;
         and




                                      -81-
<PAGE>   89



                  (l) Renewals, extensions, amendments, refinancing,
         rearrangements, modifications, restatements, defeasances, purchases or
         supplements of any Indebtedness referred to in Subsection 8.2.2(a)
         through (k), provided that any such Indebtedness is not increased
         beyond the amount thereof outstanding on the Effective Date or on the
         date of incurrence of such Indebtedness in accordance with this
         Section;

provided, however, that no Indebtedness otherwise permitted by clause (b) shall
be permitted if, after giving effect to the incurrence thereof, any Default
shall have occurred and be continuing.

         SECTION 8.2.3. LIENS. The Borrower will not, and will not permit any
of its Subsidiaries to, create, incur, assume or suffer to exist any Lien upon
any of its property, revenues or assets, whether now owned or hereafter
acquired, except:

                  (a) Liens securing payment of the Obligations, granted
         pursuant to any Loan Document;

                  (b) Liens granted to secure payment of Indebtedness of the
         type permitted and described in clause (b) of Section 8.2.2 and
         covering only those assets acquired with the proceeds of such
         Indebtedness;

                  (c) Hydrocarbon production sales contracts entered into by the
         Borrower or its Subsidiaries in the ordinary course of business;

                  (d) Liens for taxes, assessments or other governmental charges
         or levies not at the time delinquent or thereafter payable without
         penalty or being diligently contested in good faith by appropriate
         proceedings and for which adequate reserves in accordance with GAAP
         shall have been set aside on its books;

                  (e) statutory Liens of landlords and Liens of carriers,
         warehousemen, mechanics, suppliers, materialmen, repairmen and other
         Liens imposed by law incurred in the ordinary course of business for
         claims which are either not delinquent or are being contested in good
         faith by appropriate proceedings and as to which the Borrower or its
         applicable Subsidiary shall have set aside on its books such reserves
         as may be required pursuant to GAAP; provided, that at no time shall
         such sums which are being contested exceed in the aggregate $100,000;

                  (f) Liens incurred in the ordinary course of business in
         connection with workmen's compensation, unemployment insurance or other
         forms of governmental insurance or benefits, or to secure performance
         of tenders, statutory obligations, leases and contracts (other than for
         borrowed money)


                                      -82-
<PAGE>   90

         entered into in the ordinary course of business or to secure
         obligations on surety or appeal bonds, including lessee or operator
         obligations under statutes, governmental regulations or instruments
         related to the ownership, exploration and production of oil, gas and
         minerals on private, state, federal or foreign lands or waters;

                  (g) covenants, restrictions, easements, servitudes, permits,
         conditions, exceptions, reservations, minor rights, minor encumbrances,
         minor irregularities in title or conventional rights of reassignment
         prior to abandonment which do not materially interfere with the
         occupation, use and enjoyment by the Borrower or any of its
         Subsidiaries of their respective assets in the ordinary course of
         business as presently conducted, or materially impair the value thereof
         for the purpose of such business;

                  (h) judgment Liens in existence less than thirty (30) days
         after the entry thereof or with respect to which execution has been
         stayed or the payment of which is covered in full (subject to a
         customary deductible) by insurance maintained with responsible
         insurance companies;

                  (i) Liens granted prior to the Effective Date to secure
         payment of Indebtedness described in clause (f) of Section 8.2.2;
         provided that such Lien does not extend to any other Property;

                  (j) any Lien, excluding any Lien to secure Indebtedness for
         Debt, existing on any asset of any Person that is not included in the
         Borrowing Base at the time such Person becomes a Subsidiary of the
         Borrower or is merged or consolidated with or into the Borrower or a
         Subsidiary of the Borrower, or as of the acquisition of such asset,
         provided that such Lien does not extend to any other Property and was
         not created in contemplation of such event;

                  (k) Liens on cash and Cash Equivalent Investments securing
         Hedging Obligations, provided that the aggregate amount of cash and
         Cash Equivalent Investments subject to such Liens may at no time exceed
         $250,000;

                  (l) Liens which (1) do not secure Debt, (2) arise by statute
         or in the ordinary course of business under operating agreements, joint
         venture agreements, oil and gas partnership agreements, oil and gas
         leases, farm-out agreements, division orders, contracts for the sale,
         transportation or exchange of oil and natural gas, unitization and
         pooling declarations and agreements, area of mutual interest
         agreements, overriding royalty agreements, marketing agreements,
         processing agreements, net profits agreements, Production Payments,
         development agreements, production sales contracts, gas balancing or
         deferred production agreements, injection, repressuring and recycling
         agreements, salt water or other disposal agreements, seismic or other


                                      -83-
<PAGE>   91

         geophysical permits or agreements, and other agreements which are, in
         the Administrative Agent's reasonable judgment, customary in the oil
         and gas business, and (3) are for claims which are either not
         delinquent or are being contested in good faith by appropriate
         proceedings and as to which the Borrower or its applicable Subsidiaries
         shall have set aside on its books such reserves as may be required
         pursuant to GAAP;

                  (m) Liens arising solely by virtue of any statutory or common
         law provision relating to banker's liens, rights of set-off or similar
         rights and remedies and burdening only deposit accounts or other funds
         maintained with a creditor depository institution; provided that (i) no
         such deposit account is a dedicated cash collateral account or is
         subject to restrictions against access by the depositor in excess of
         those set forth by regulations promulgated by the Board of Governors of
         the Federal Reserve System, and (ii) no such deposit account is
         intended by Borrower or any of its Subsidiaries to provide collateral
         to the depository institution;

                  (n) any Lien arising out of the refinancing, extension,
         renewal or refunding of any Indebtedness secured by any Lien permitted
         by any of the foregoing clauses of this Section, provided that any such
         Indebtedness is not increased beyond the amount thereof outstanding on
         the Effective Date or on the date of incurrence of such Lien in
         accordance with this Section and is not secured by any additional
         assets;

                  (o) the statutory Lien to secure payment of the proceeds of
         Hydrocarbon production established by Texas Bus. & Com. Code Section
         9.319 and similar laws of other jurisdictions;

                  (p) rights reserved to or vested in any Government Agency by
         the terms of any right, power, franchise, grant, license, or permit, or
         by any provision of law, to terminate such right, power, franchise,
         grant, license, or permit or to purchase, condemn, expropriate, or
         recapture or to designate a purchaser of any of the Properties of the
         Borrower or its Subsidiaries;

                  (q) rights of a common owner of any interest in real estate,
         rights of way, or easements held by the Borrower or its Subsidiary and
         such common owner as tenant in common or through other common
         ownership;

                  (r) Liens not otherwise permitted by the foregoing clauses of
         this Section 8.2.3 securing Indebtedness in an aggregate principal or
         face amount not at any time exceeding $500,000; and




                                      -84-
<PAGE>   92


                  (s) Liens on the Arco East Texas Property, to the extent the
         Company's Subsidiary owning such Property is indemnified against any
         loss arising therefrom pursuant to the Arco Title Indemnity.

         SECTION 8.2.4. FINANCIAL CONDITION. The Borrower will not permit:

                  (a) Tangible Net Worth at any time to be less than the sum of
         (i) $44,574,521 plus (ii) fifty percent (50%) of consolidated net
         income of the Borrower and its Subsidiaries (excluding the effects of
         consolidated net losses) for each Fiscal Quarter beginning on or after
         July 1, 1999, plus (iii) one-hundred percent (100%) of the net proceeds
         of any Non-Redeemable Stock offering by the Borrower or any of its
         Subsidiaries at any time after the Effective Date;

                  (b) the Current Ratio at any time to be less than 1.0:1.0; or

                  (c) the Interest Coverage Ratio at the end of any Fiscal
         Quarter to be less than 3.0:1.0.

         The Borrower shall not, and shall not suffer or permit any Subsidiary
         to, make any significant change in accounting treatment or reporting
         practices, except as required by GAAP, or, without the consent of the
         Administrative Agent, such consent not to be unreasonably withheld,
         change the fiscal year of the Borrower or of any Subsidiary.

         SECTION 8.2.5. INVESTMENTS. The Borrower will not, and will not permit
any of its consolidated or Material Subsidiaries to, make, incur, assume or
suffer to exist any Investment in any other Person, except:

                  (a) Cash Equivalent Investments;

                  (b) in the ordinary course of business, Investments by the
         Borrower in any of its Material Subsidiaries, or by any such Subsidiary
         in the Borrower or any of its Material Subsidiaries, by way of
         contributions to capital or loans or advances;

                  (c) without duplication, Investments in the nature of Capital
         Expenditures;

                  (d) Investments existing on the Effective Date and identified
         in Item 8.2.5(d) of the Disclosure Schedule;

                  (e) Investments permitted by Section 8.2.8;




                                      -85-
<PAGE>   93



                  (f) Investments in limited partnerships entered into by the
         Borrower or a Subsidiary of the Borrower, or general partnerships
         entered into by a non-Material Subsidiary of the Borrower, in each case
         with industry partners in the ordinary course of its business, or
         capital contributions to such partnerships, provided, that (i) such
         partnership is engaged exclusively in oil and gas exploration,
         development or production activities, (ii) the Borrower's or such
         Subsidiary's equity interests in such partnerships were acquired in the
         ordinary course of Borrower's or such Subsidiary's business and upon
         fair and reasonable terms and (iii) which Investments, in the
         aggregate, do not exceed five percent (5%) of the Borrowing Base at the
         time of such Investment; and further provided, that the limitations of
         this subsection (f) shall not apply to any Investment made in a
         Material Subsidiary;

                  (g) accounts receivable from customers in the ordinary course
         of business;

                  (h) loans and advances to employees not to exceed $100,000 in
         the aggregate as to all such loans and advances outstanding at any
         time;

                  (i) Investments in connection with or related to farm-out
         agreements, farm-in agreements, joint operating agreements or other
         similar arrangements, and the performance of Borrower's or such
         Subsidiary's obligations thereunder in accordance with prudent
         operating standards and in the ordinary course of business;

                  (j) Investments made with Non-Redeemable Stock, but only to
         the extent allocable to such Non-Redeemable Stock, and subject to the
         consequences of a Change of Control;

                  (k) Investments in "margin stock" (as such term is defined in
         F.R.S. Board Regulation U, X or T), to the extent acquisitions of
         margin stock are permitted by Section 5.10; and

                  (l) any Investment not otherwise permitted by the foregoing
         clauses of this Section if, immediately after such Investment is made
         or acquired, the aggregate net book value of all Investments permitted
         by this clause (m) does not exceed $100,000.

provided, however, that

                           (i) any Investment which when made complies with the
                  requirements of the definition of the term "Cash Equivalent
                  Investment" may continue to be held notwithstanding that such
                  Investment if made thereafter would not comply with such
                  requirements; and



                                      -86-
<PAGE>   94



                           (ii) no Investment otherwise permitted by clause (b)
                  and (c) shall be permitted to be made if, immediately before
                  or after giving effect thereto, any Default shall have
                  occurred and be continuing.

         SECTION 8.2.6. RESTRICTED PAYMENTS, ETC. On and at all times after the
Effective Date:

                  (a) the Borrower will not, and will not permit any of its
         Subsidiaries (other than a wholly-owned Subsidiary) to, declare, pay or
         make any dividend or distribution (in cash, property or obligations) on
         any class or shares of any class of partnership interest or Capital
         Stock (now or hereafter outstanding) of the Borrower or such Subsidiary
         or on any options, warrants or other rights with respect to any
         interest or shares of any class of partnership interest or Capital
         Stock (now or hereafter outstanding) of the Borrower or such Subsidiary
         or apply, or permit any of its Subsidiaries to apply, any of its funds,
         property or assets to the purchase, redemption, sinking fund or other
         retirement of, any interest or shares of any class of partnership
         interest or Capital Stock (now or hereafter outstanding) of the
         Borrower or such Subsidiary or options, warrants or other rights with
         respect to any interest or shares of any class of partnership interest
         or Capital Stock (now or hereafter outstanding) of the Borrower or such
         Subsidiary (such declarations, dividends, distributions or applications
         being called "Distribution Payments") other than Distribution Payments
         which do not cause the Borrower to be in violation of the Restricted
         Payment Tests; provided, however, that the Borrower may make or accrue
         Distribution Payments in the form of additional shares of Capital Stock
         of the Borrower or accruals thereof, so long as such additional shares
         of Capital Stock of the Borrower do not entitle the holder thereof to
         receive Distribution Payments payable in cash as a matter of right;

                  (b) the Borrower will not permit any of its Subsidiaries to
         make any Distribution Payments other than to the Borrower; and

                  (c) the Borrower will not, and will not permit any of its
         Subsidiaries to, make any deposit for any of the foregoing purposes.

         SECTION 8.2.7. RENTAL OBLIGATIONS. The Borrower will not, and will not
permit any of its Subsidiaries to, enter into at any time any arrangement
(excluding oil and gas leases entered into in the ordinary course of business)
which involves the leasing by the Borrower or any consolidated or Material
Subsidiary from any lessor of any real or personal property (or any interest
therein), except arrangements which, together with all other such arrangements
which shall then be in effect, will not require the payment of an aggregate
amount of rentals by the Borrower or any of its Subsidiaries in excess of
(excluding escalations resulting from a rise in the consumer price or similar
index) $500,000 for any Fiscal Year or $2,000,000 during the full remaining


                                      -87-
<PAGE>   95

term of such arrangements, including any so-called synthetic lease; provided,
however, that any calculation made for purposes of this Section 8.2.7 shall
exclude any amounts (i) required to be expended for maintenance and repairs,
insurance, taxes, assessments, and other similar charges and (ii) any amounts
relating to Capitalized Lease Obligations.

         SECTION 8.2.8. CONSOLIDATION, MERGER, ETC. The Borrower will not,
and will not permit any of its Subsidiaries to, liquidate or dissolve,
consolidate with, or merge into or with, any other corporation, partnership or
other Person, or purchase or otherwise acquire all or substantially all of the
assets of any Person (or of any division thereof) except

                  (a) so long as no Default has occurred and is continuing or
         would so occur after giving effect thereto, (i) any such Subsidiary
         (other than a Material Subsidiary) may liquidate or dissolve
         voluntarily into, and may merge with and into, the Borrower or any
         other Subsidiary, (ii) any Material Subsidiary may liquidate or
         dissolve voluntarily into, and may merge with and into, the Borrower or
         any other Material Subsidiary, (iii) the assets or stock of any
         Subsidiary (other than a Material Subsidiary) may be purchased or
         otherwise acquired by the Borrower or any other Subsidiary, (iv) the
         assets or stock of any Material Subsidiary may be purchased or
         otherwise acquired by the Borrower or any other Material Subsidiary,
         and (v) the Borrower may merge with or into another Person if the
         Borrower is the Person surviving such merger and Principal Shareholders
         retain control over the Borrower; and

                  (b) so long as no Default has occurred and is continuing or
         would so occur after giving effect thereto, the Borrower or any of its
         Subsidiaries may purchase all or substantially all of the assets of any
         Person, or acquire such Person by merger.

The Borrower will not create any Subsidiary unless it shall promptly give notice
thereof to the Administrative Agent.

         SECTION 8.2.9. ASSET DISPOSITIONS, ETC.

                  (a) The Borrower will not, and will not permit any of its
         consolidated or Material Subsidiaries to, sell, transfer, lease,
         contribute or otherwise convey, or grant options, warrants or other
         rights with respect to, all or substantially all of the assets of the
         Borrower or any of its consolidated or Material Subsidiaries in any one
         transaction or in any series of transactions, whether or not related.

                  (b) The Borrower will not, and will not permit any of its
         consolidated or Material Subsidiaries to, sell, transfer, lease,
         contribute or otherwise convey,


                                      -88-
<PAGE>   96

         or grant options, warrants or other rights with respect to any
         substantial part of its assets (including accounts receivable), to any
         Person other than

                           (i) if such asset(s) are not in the Borrowing Base,
                  such sale, transfer, lease, contribution or conveyance is for
                  cash or other consideration having a value at least equal to
                  the fair market value of such assets;

                           (ii) if such assets are in the Borrowing Base, the
                  Borrower complies with the terms of Section 3.1.2 and such
                  sale, transfer, lease, contribution or conveyance is for cash
                  in an amount at least equal to the fair market value of such
                  assets; or

                  (c) farmouts under standard industry terms of Properties not
         holding Proven Reserves.

         SECTION 8.2.10. MODIFICATION OF CERTAIN DOCUMENTS.

                  (a) The Borrower will not, and will not permit any of its
         consolidated or Material Subsidiaries to, amend its Organic Documents
         or consent to any amendment, supplement or other modification of any of
         the terms or provisions contained in, or applicable to, the Material
         Contracts or any other agreement affecting the Mortgaged Properties
         which could reasonably be expected to have a Material Adverse Effect,
         in each case without the prior written consent of the Administrative
         Agent.

                  (b) The Borrower will not, and will not permit any of its
         Subsidiaries to, amend the Arco Title Indemnity in a manner which
         adversely affects the Borrower, its Subsidiaries or the Lenders, waive
         any right or claim thereunder or consent to the substitution or
         addition of any alternate or substitute indemnitor thereunder, in each
         case without the prior written consent of the Required Lenders.

         SECTION 8.2.11. TRANSACTIONS WITH AFFILIATES. The Borrower will not,
and will not permit any of its consolidated or Material Subsidiaries to, enter
into, or cause, suffer or permit to exist any arrangement or contract with any
of its other Affiliates unless such arrangement or contract is fair and
equitable to the Borrower or such Subsidiary and is an arrangement or contract
of the kind which would be entered into by a prudent Person in the position of
the Borrower or such Subsidiary with a Person which is not one of its
Affiliates.

         SECTION 8.2.12. NEGATIVE PLEDGES, RESTRICTIVE AGREEMENTS, ETC. The
Borrower will not, and will not permit any of its Subsidiaries to, enter into
any agreement (excluding this Agreement, any other Loan Document and any
agreement


                                      -89-
<PAGE>   97

governing any Indebtedness permitted by clauses (b) or (f) of Section 8.2.2 as
in effect on the Effective Date as to the assets financed with the proceeds of
such Indebtedness) prohibiting

                  (a) the creation or assumption of any Lien upon its
         properties, revenues or assets, whether now owned or hereafter
         acquired, or the ability of the Borrower or any other Obligor to amend
         or otherwise modify this Agreement or any other Loan Document; or

                  (b) the ability of any Material Subsidiary to make any
         payments, directly or indirectly, to the Borrower by way of dividends,
         advances, repayments of loans or advances, reimbursements of management
         and other intercompany charges, expenses and accruals or other returns
         on investments, or any other agreement or arrangement which restricts
         the ability of any such Material Subsidiary to make any payment,
         directly or indirectly, to the Borrower.

         SECTION 8.2.13. TAKE OR PAY CONTRACTS. Except as disclosed to the
Lender in Item 8.2.13 of the Disclosure Schedule, and except for reservation
charges payable for reservations of capacity in gathering systems and pipelines
incurred in the ordinary course of business on an arm's length basis for volumes
reasonably expected to be produced from the Borrowers' or its Subsidiaries' Oil
and Gas Properties to be transported through such systems and pipelines, the
Borrower will not, and will not permit any of its Subsidiaries to, enter into or
be a party to any arrangement for the forward sale of Hydrocarbons or the
purchase of materials, supplies, other property (including without limitation
Hydrocarbons), or services if such arrangement requires that payment be made by
the Borrower or such Subsidiary regardless of whether such materials, supplies,
other property, or services are delivered or furnished to it.

         SECTION 8.2.14. SALE/LEASEBACKS. Obligors will not enter into any
arrangement, directly or indirectly, with any Person whereby any Obligor shall
sell or transfer any material asset, and whereby any Obligor shall then or
immediately thereafter rent or lease as lessee such asset or any part thereof.

         SECTION 8.2.15. HYDROCARBON HEDGING. Commencing October 1, 1999, the
Borrower will not, and will not permit any of its Subsidiaries to, enter into
Hedging Agreements except those that (a) are with a Lender whose senior
unsecured long term debt or certificates of deposit is rated at least A by
Standard & Poor's Corporation or A2 by Moody's Investors Service, Inc., such
Lender's Affiliates or other counterparties reasonably acceptable to the
Administrative Agent, (b) do not result in Hedging Obligations that are (i) at
any time during the twenty-four (24) months immediately following the incurrence
of such Hedging Obligation, in excess of seventy-five percent (75%) of the
reasonably anticipated production of Hydrocarbons during such period from the
proved developed producing Hydrocarbon reserves owned by the Borrower and its
Subsidiaries according to the most recent Engineering Report delivered to the


                                      -90-
<PAGE>   98

Administrative Agent or (ii) at any time following the end of such twenty four
(24) month period, in excess of fifty percent (50%) of the reasonably
anticipated production of Hydrocarbons during such period from the proved
developed producing Hydrocarbon reserves owned by the Borrower and its
Subsidiaries according to the most recent Engineering Report delivered to the
Administrative Agent and (c) the amount of the Hedging Obligation for the
particular Hydrocarbon (i.e. - gas or oil) must not be materially in excess of
the proportion that such Hydrocarbon bears to the total amount of proved
developed Hydrocarbon reserves owned by the Borrower and its Subsidiaries. (For
example, if the Borrower and its Subsidiaries owned proved developed producing
Hydrocarbon reserves that were 45% oil-producing Properties and 55%
gas-producing Properties, then any Hedging Obligation of the Borrower or its
Subsidiaries for oil could not be, during the initial 24 month period,
materially more than 45% of 75% of the reasonably anticipated production of
Hydrocarbons from the proved developed producing Hydrocarbon reserves owned by
the Borrower and its Subsidiaries according to the most recent Engineering
Report delivered to the Administrative Agent.) The Borrower has entered into no
other Hedging Agreements other than those listed in Schedule V.


                                   ARTICLE IX

                                EVENTS OF DEFAULT

         SECTION 9.1. LISTING OF EVENTS OF DEFAULT. Each of the following events
or occurrences described in this Section 9.1 shall constitute an "Event of
Default".

         SECTION 9.1.1. NON-PAYMENT OF OBLIGATIONS. The Borrower shall default
in the payment or prepayment when due of any principal of any Loan; the Borrower
shall default in the payment when due of any Reimbursement Obligation or Hedging
Agreement in effect between the Borrower and a Lender or Affiliate thereof; or
the Borrower shall default (and such default shall continue unremedied for a
period of five (5) days) in the payment when due of any interest on any Loan or
any fees payable under Section 3.3 or any other Obligation.

         SECTION 9.1.2. BREACH OF WARRANTY. Any representation or warranty of
the Borrower or any other Obligor made or deemed to be made hereunder or in any
other Loan Document executed by it or any other writing or certificate furnished
by or on behalf of the Borrower or any other Obligor to the Administrative
Agent, any Issuer or any Lender for the purposes of or in connection with this
Agreement or any such other Loan Document (including any certificates delivered
pursuant to Article VI) is or shall be incorrect when made in any material
respect.

         SECTION 9.1.3. NON-PERFORMANCE OF CERTAIN COVENANTS AND OBLIGATIONS.
The Borrower shall default in the due performance and observance of any of its
obligations


                                      -91-
<PAGE>   99

under Section 3.1.2, Section 8.1 (other than Sections 8.1.1(j), 8.1.1(n), 8.1.2,
8.1.3, 8.1.6 or 8.1.7) or Section 8.2.

         SECTION 9.1.4. NON-PERFORMANCE OF OTHER COVENANTS AND OBLIGATIONS. The
Borrower or any other Obligor shall default in the due performance and
observance of any other agreement contained herein or in any other Loan Document
executed by it, and such default shall continue unremedied for a period of
fifteen (15) days after notice thereof shall have been given to the Borrower by
the Administrative Agent or any Lender.

         SECTION 9.1.5. DEFAULT ON OTHER INDEBTEDNESS.

                  (a) A default shall occur in the payment when due (subject to
         any applicable grace period), whether by acceleration or otherwise, of
         any Indebtedness (excluding Indebtedness described in Section 9.1.1) of
         the Borrower or any other Obligor having a principal amount,
         individually or in the aggregate, in excess of $250,000, or a default
         shall occur in the performance or observance of any obligation or
         condition with respect to such Indebtedness if the effect of such
         default is to accelerate the maturity of any such Indebtedness or such
         default shall continue unremedied for any applicable period of time
         sufficient to permit any holder of such Indebtedness, or any trustee or
         Administrative Agent for such holders, to cause such Indebtedness to
         become due and payable prior to its expressed maturity.

                  (b) A failure to pay when due any royalty, overriding royalty
         or similar interest burdening the Oil and Gas Properties of the
         Borrower or any of its Subsidiaries, in the aggregate, in excess of
         $250,000.

         SECTION 9.1.6. JUDGMENTS. Any judgment or order for the payment of
money in excess of $250,000 (in excess of valid and collectible insurance in
respect thereof the payment of which is not being disputed or contested by the
insurer or insurers) shall be rendered against the Borrower or any other Obligor
and either

                  (a) enforcement proceedings shall have been commenced by any
         creditor upon such judgment or order; or

                  (b) there shall be any period of ten (10) consecutive days
         during which a stay of enforcement of such judgment or order, by reason
         of a pending appeal or otherwise, shall not be in effect.

         SECTION 9.1.7. PENSION PLANS. Any of the following events shall occur
with respect to any Pension Plan




                                      -92-
<PAGE>   100



                  (a) the institution of any steps by the Borrower, any member
         of its Controlled Group or any other Person to terminate a Pension Plan
         if, as a result of such termination, the Borrower or any such member
         could be required to make a contribution to such Pension Plan in excess
         of $100,000, or could reasonably expect to incur a liability or
         obligation to such Pension Plan in excess of $100,000; or

                  (b) a contribution failure occurs with respect to any Pension
         Plan sufficient to give rise to a Lien under Section 302(f) of ERISA.

         SECTION 9.1.8. CONTROL OF THE BORROWER. Any Change in Control shall
occur.

         SECTION 9.1.9. BANKRUPTCY, INSOLVENCY, ETC. The Borrower or any other
Obligor shall

                  (a) become insolvent or generally fail to pay, or admit in
         writing its inability or unwillingness to pay, debts as they become
         due;

                  (b) apply for, consent to, or acquiesce in, the appointment of
         a trustee, receiver, sequestrator or other custodian for the Borrower
         or any other Obligor or any property of any thereof, or make a general
         assignment for the benefit of creditors;

                  (c) in the absence of such application, consent or
         acquiescence, permit or suffer to exist the appointment of a trustee,
         receiver, sequestrator or other custodian for the Borrower or any other
         Obligor or for a substantial part of the property of any thereof, and
         such trustee, receiver, sequestrator or other custodian shall not be
         discharged within sixty (60) days, provided that the Borrower and each
         other Obligor hereby expressly authorizes the Administrative Agent and
         each Lender to appear in any court conducting any relevant proceeding
         during such sixty (60)-day period to preserve, protect and defend its
         or their rights under the Loan Documents;

                  (d) permit or suffer to exist the commencement of any
         bankruptcy, reorganization, debt arrangement or other case or
         proceeding under any bankruptcy or insolvency law, or any dissolution,
         winding up or liquidation proceeding, in respect of the Borrower or any
         other Obligor, and, if any such case or proceeding is not commenced by
         the Borrower or such other Obligor, such case or proceeding shall be
         consented to or acquiesced in by the Borrower or such other Obligor or
         shall result in the entry of an order for relief or shall remain for
         sixty (60) days undismissed, provided that the Borrower and each other
         Obligor hereby expressly authorizes the Administrative Agent and each
         Lender to appear in any court conducting any such case or proceeding
         during


                                      -93-
<PAGE>   101

         such sixty (60)-day period to preserve, protect and defend its or their
         rights under the Loan Documents; or

                  (e) take any action authorizing, or in furtherance of, any of
         the foregoing.

         SECTION 9.1.10. IMPAIRMENT OF SECURITY, ETC. Any Loan Document, or any
Lien granted thereunder, shall (except in accordance with its terms), in whole
or in part, terminate, cease to be effective or cease to be the legally valid,
binding and enforceable obligation of any Obligor party thereto; the Borrower,
any other Obligor or any other party shall, directly or indirectly, contest in
any manner such effectiveness, validity, binding nature or enforceability; or
any Lien securing any Obligation shall, in whole or in part, cease to be a
perfected first priority Lien, subject only to those exceptions expressly
permitted by the Loan Documents.

         SECTION 9.1.11. MATERIAL ADVERSE EFFECT. Any Material Adverse Effect
shall occur.

         SECTION 9.1.12. BORROWING BASE DEFICIENCY. Any Borrowing Base
Deficiency shall occur and continue for more than ninety (90) days.

         SECTION 9.2. ACTION IF BANKRUPTCY. If any Event of Default described in
clauses (a) through (d) of Section 9.1.9 shall occur with respect to the
Borrower or any other Obligor, the Commitments (if not theretofore terminated)
shall automatically terminate and the outstanding principal amount of all
outstanding Loans and all other Obligations shall automatically be and become
immediately due and payable, without notice or demand.

         SECTION 9.3. ACTION IF OTHER EVENT OF DEFAULT. If any Event of Default
(other than any Event of Default described in clauses (a) through (d) of Section
9.1.9 with respect to the Borrower or any other Obligor) shall occur for any
reason, whether voluntary or involuntary, and be continuing, the Administrative
Agent, may (and, upon direction by the Required Lenders, shall) by notice to the
Borrower declare all or any portion of the outstanding principal amount of the
Loans and other Obligations to be due and payable and/or the Commitments (if not
theretofore terminated) to be terminated, whereupon the full unpaid amount of
such Loans and other Obligations which shall be so declared due and payable
shall be and become immediately due and payable, without further notice, demand
or presentment, and/or, as the case may be, the Commitments shall terminate.

         SECTION 9.4. RIGHTS NOT EXCLUSIVE. The rights provided for in this
Agreement and the other Loan Documents are cumulative and are not exclusive of
any other rights, powers, privileges or remedies provided by Applicable Law or
in equity, or under any other instrument, document or agreement now existing or
hereafter arising.



                                      -94-
<PAGE>   102




                                    ARTICLE X

                            THE ADMINISTRATIVE AGENT

         SECTION 10.1. ACTIONS. Each Lender hereby appoints Bank of America as
its Administrative Agent under and for purposes of this Agreement, the Notes and
each other Loan Document, and Bank of America hereby accepts such appointment.
Each Lender authorizes the Administrative Agent to act on behalf of such Lender
under this Agreement, the Notes and each other Loan Document and, in the absence
of other written instructions from the Required Lenders received from time to
time by the Administrative Agent (with respect to which the Administrative Agent
agrees that it will comply, except as otherwise provided in this Section and to
the extent such instructions may reasonably be expected to comply with
applicable law), to exercise such powers and to perform such duties hereunder
and thereunder as are specifically delegated to or required of the
Administrative Agent by the terms hereof and thereof, together with such powers
as may be reasonably incidental thereto; provided, however, that the
Administrative Agent shall not take any action that requires the consent of any
Lender unless it receives such consent. Each Lender hereby indemnifies (which
indemnity shall survive any termination of this Agreement) the Administrative
Agent, pro rata according to such Lender's Percentage, from and against any and
all liabilities, obligations, losses, damages, claims, costs or expenses of any
kind or nature whatsoever which may at any time be imposed on, incurred by, or
asserted against, the Administrative Agent in any way relating to or arising out
of this Agreement, the Notes and any other Loan Document, including reasonable
attorneys' fees, and as to which the Administrative Agent is not reimbursed by
the Borrower; provided, however, that no Lender shall be liable for the payment
of any portion of such liabilities, obligations, losses, damages, claims, costs
or expenses which are determined by a court of competent jurisdiction in a final
proceeding to have resulted solely from the Administrative Agent's gross
negligence or wilful misconduct. The Administrative Agent shall not be required
to take any action hereunder, under the Notes or under any other Loan Document,
or to prosecute or defend any suit in respect of this Agreement, the Notes or
any other Loan Document, unless it is indemnified hereunder to its satisfaction.
If any indemnity in favor of the Administrative Agent shall be or become, in the
Administrative Agent's determination, inadequate, the Administrative Agent may
call for additional indemnification from the Lenders and cease to do the acts
indemnified against hereunder until such additional indemnity is given.

         SECTION 10.2. FUNDING RELIANCE, ETC. Unless the Administrative Agent
shall have been notified by telephone, confirmed in writing, by any Lender by
5:00 p.m. (Dallas time) on the day prior to a Borrowing that such Lender will
not make available the amount which would constitute its Percentage of such
Borrowing on the date specified therefor, the Administrative Agent may assume
that such Lender has made


                                      -95-
<PAGE>   103

such amount available to the Administrative Agent and, in reliance upon such
assumption, make available to the Borrower a corresponding amount. If and to the
extent that such Lender shall not have made such amount available to the
Administrative Agent, such Lender and the Borrower severally agree to repay the
Administrative Agent forthwith on demand such corresponding amount together with
interest thereon, for each day from the date the Administrative Agent made such
amount available to the Borrower to the date such amount is repaid to the
Administrative Agent, at the interest rate applicable at the time to Loans
comprising such Borrowing.

         SECTION 10.3. EXCULPATION. Neither the Administrative Agent nor any of
its directors, officers, employees or Administrative Agents shall be liable to
any Lender for any action taken or omitted to be taken by it under this
Agreement or any other Loan Document, or in connection herewith or therewith,
except for its own wilful misconduct or gross negligence, nor responsible for
any recitals or warranties herein or therein, nor for the effectiveness,
enforceability, validity or due execution of this Agreement or any other Loan
Document, nor for the creation, perfection or priority of any Liens purported to
be created by any of the Loan Documents, or the validity, genuineness,
enforceability, existence, value or sufficiency of any collateral security, nor
to make any inquiry respecting the performance by the Borrower of its
obligations hereunder or under any other Loan Document. Any such inquiry which
may be made by the Administrative Agent shall not obligate it to make any
further inquiry or to take any action. The Administrative Agent shall be
entitled to rely upon advice of counsel concerning legal matters and upon any
notice, consent, certificate, statement or writing which the Administrative
Agent believes to be genuine and to have been presented by a proper Person.

         SECTION 10.4. SUCCESSOR. The Administrative Agent may resign as such at
any time upon at least thirty (30) days' prior notice to the Borrower and all
Lenders, and the Administrative Agent may be removed with or without cause as
such by the Required Lenders upon at least thirty (30) days' prior notice to the
Administrative Agent and the Borrower. If the Administrative Agent at any time
shall resign or be removed, the Required Lenders may appoint another Lender as a
successor Administrative Agent which Lender shall thereupon become the
Administrative Agent hereunder. If no successor Administrative Agent shall have
been so appointed by the Required Lenders, and shall have accepted such
appointment, within thirty (30) days after the giving of notice of resignation
or removal, then the retiring or removed Administrative Agent may, on behalf of
the Lenders, appoint a successor Administrative Agent, which shall be one of the
Lenders and, if no Lender accepts such appointment, a commercial banking
institution organized under the laws of the United States (or any State thereof)
or a United States branch or agency of a commercial banking institution, and
having a combined capital and surplus of at least $500,000,000. Upon the
acceptance of any appointment as Administrative Agent hereunder by a successor
Administrative Agent, such successor Administrative Agent


                                      -96-
<PAGE>   104

shall be entitled to receive from the retiring or removed Administrative Agent
such documents of transfer and assignment as such successor Administrative Agent
may reasonably request, and shall thereupon succeed to and become vested with
all rights, powers, privileges and duties of the retiring or removed
Administrative Agent, and the retiring or removed Administrative Agent shall be
discharged from its duties and obligations under this Agreement. After any
retiring or removed Administrative Agent's resignation or removal hereunder as
the Administrative Agent, the provisions of

                  (a) this Article X shall inure to its benefit as to any
         actions taken or omitted to be taken by it while it was the
         Administrative Agent under this Agreement; and

                  Section 11.3 and Section 11.4 shall continue to inure to its
         benefit.

         SECTION 10.5. LOANS OR LETTERS OF CREDIT ISSUED BY BANK OF AMERICA.
Bank of America shall have the same rights and powers with respect to (x) the
Loans made by it or any of its Affiliates, (y) the Notes held by it or any of
its Affiliates, and (z) its participating interests in the Letters of Credit as
any other Lender and may exercise the same as if it were not the Administrative
Agent. Bank of America and its Affiliates and each of the Lenders and each of
the Issuers and their respective Affiliates may accept deposits from, lend money
to, and generally engage in any kind of business with the Borrower or any
Subsidiary or Affiliate of the Borrower as if Bank of America were not the
Administrative Agent hereunder and in the case of each Lender or Issuer, as if
such Lender or such Issuer were not a Lender or Issuer hereunder.

         SECTION 10.6. CREDIT DECISIONS. Each Lender and each Issuer
acknowledges that it has, independently of the Administrative Agent, each other
Issuer and each other Lender, and based on such Lender's or such Issuer's review
of the financial information of the Borrower, this Agreement, the other Loan
Documents (the terms and provisions of which being satisfactory to such Lender
or such Issuer) and such other documents, information and investigations as such
Lender or such Issuer has deemed appropriate, made its own credit decision to
extend its Commitments. Each Lender and each Issuer also acknowledges that it
will, independently of the Administrative Agent and each other Lender and each
other Issuer, and based on such other documents, information and investigations
as it shall deem appropriate at any time, continue to make its own credit
decisions as to exercising or not exercising from time to time any rights and
privileges available to it under this Agreement or any other Loan Document.

         SECTION 10.7. COPIES, ETC. The Administrative Agent shall give prompt
notice to each Lender and each Issuer of each notice or request required or
permitted to be given to the Administrative Agent by the Borrower pursuant to
the terms of this


                                      -97-
<PAGE>   105

Agreement (unless concurrently delivered to the Lenders and each Issuer by the
Borrower). The Administrative Agent will distribute promptly to each Lender and
each Issuer each document or instrument received for its account and copies of
all other communications received by the Administrative Agent from the Borrower
for distribution to the Lenders and Issuers by the Administrative Agent in
accordance with the terms of this Agreement.


                                   ARTICLE XI

                            MISCELLANEOUS PROVISIONS

         SECTION 11.1. WAIVERS, AMENDMENTS, ETC.

                  (a) This Agreement is an amendment and restatement of, and
         replaces and supersedes, the Existing Credit Agreement in its entirety;
         provided, however, that no right, interest, claim or cause of action of
         any kind of the lender under the Existing Credit Agreement shall in any
         way be released, modified, compromised or waived by virtue of this
         Agreement superseding and replacing the Existing Credit Agreement, and
         nothing in this Agreement or the other Loan Documents is intended to
         novate or discharge the indebtedness of the Borrower or the other
         Obligors under the Existing Credit Agreement; provided however, upon
         the satisfaction of all conditions set forth in Section 6.1, Bank of
         America shall terminate its Lien on all shares of the Capital Stock of
         the Borrower under Pledge Agreements under the Existing Credit
         Agreement that were previously delivered by shareholders of the
         Borrower;

                  (b) The provisions of this Agreement and of each other Loan
         Document may from time to time be amended, modified or waived, if such
         amendment, modification or waiver is in writing and consented to by the
         Borrower and the Required Lenders; provided, however, that no such
         amendment, modification or waiver which would:

                           (i) modify any requirement hereunder that any
                  particular action be taken by all the Lenders or by the
                  Required Lenders shall be effective unless consented to by
                  each Lender;

                           (ii) modify this Section 11.1, change the definitions
                  of "Required Lenders", "Restricted Payment Tests," "Total
                  Commitment", "Letter of Credit Availability", or "Commitment
                  Amount", increase the Percentage of any Lender, reduce any
                  fees described in Article III, amend Section 6.1.15 or 8.2.6,
                  release any collateral security including any Guaranty, except
                  as otherwise specifically provided in any Loan Document, or
                  extend the Stated Maturity Date or any Commitment


                                      -98-
<PAGE>   106

                  Termination Date, shall be made without the consent of each
                  Lender affected thereby;

                           (iii) extend the due date for, or reduce the amount
                  of, any scheduled or mandatory repayment or prepayment of
                  principal of or interest on any Loan (or reduce the principal
                  amount of or rate of interest on any Loan) shall be made
                  without the consent of each Lender affected thereby;

                           (iv) affect adversely the interests, rights or
                  obligations of an Issuer in its capacity as Issuer shall be
                  made without the consent of such Issuer; or

                           (v) affect adversely the interests, rights or
                  obligations of the Administrative Agent in its capacity as the
                  Administrative Agent shall be made without consent of the
                  Administrative Agent.

No failure or delay on the part of the Administrative Agent, any Issuer or any
Lender in exercising any power or right under this Agreement or any other Loan
Document shall operate as a waiver thereof, nor shall any single or partial
exercise of any such power or right preclude any other or further exercise
thereof or the exercise of any other power or right. No notice to or demand on
the Borrower in any case shall entitle it to any notice or demand in similar or
other circumstances. No waiver or approval by the Administrative Agent, any
Issuer or any Lender under this Agreement or any other Loan Document shall,
except as may be otherwise stated in such waiver or approval, be applicable to
subsequent transactions. No waiver or approval hereunder shall require any
similar or dissimilar waiver or approval thereafter to be granted hereunder.

         SECTION 11.2. NOTICES. All notices and other communications provided to
any party hereto under this Agreement or any other Loan Document shall be in
writing and shall be hand delivered or sent by overnight courier, certified mail
(return receipt requested), or telecopy to such party at its address or telecopy
number set forth on Schedule III hereto or set forth in the Lender Assignment
Notice or at such other address or telecopy number as may be designated by such
party in a notice to the other parties. Without limiting any other means by
which a party may be able to provide that a notice has been received by the
other party, a notice shall be deemed to be duly received (a) if sent by hand,
on the date when left with a responsible person at the address of the recipient;
(b) if sent by certified mail or overnight courier, on the date of receipt (or
refusal to accept delivery) by a responsible person at the address of the
recipient; and (c) if sent by telecopy, on the date of receipt by the sender of
an acknowledgment or transmission reports generated by the machine from which
the telecopy was sent indicating that the telecopy was sent in its entirety to
the recipient's telecopy number.



                                      -99-
<PAGE>   107



         SECTION 11.3. PAYMENT OF COSTS AND EXPENSES. The Borrower agrees to pay
on demand all reasonable expenses of the Administrative Agent (including the
fees and out-of-pocket expenses of internal and external counsel to the
Administrative Agent and of local counsel, if any, who may be retained by
counsel to the Administrative Agent) in connection with

                  (a) the negotiation, preparation, due diligence, execution,
         delivery, syndication, administration and enforcement of this Agreement
         and of each other Loan Document, including schedules and exhibits, and
         any amendments, waivers, consents, supplements or other modifications
         to this Agreement or any other Loan Document as may from time to time
         hereafter be required, whether or not the transactions contemplated
         hereby are consummated,

                  (b) the filing, recording, refiling or rerecording of the
         Mortgages, the Security Agreements and the Pledge Agreements and/or any
         Uniform Commercial Code financing statements relating thereto and all
         amendments, supplements and modifications to, and releases and
         terminations of, any thereof and any and all other documents or
         instruments of further assurance required to be filed or recorded or
         refiled or rerecorded by the terms hereof or of the Mortgages, the
         Security Agreements and the Pledge Agreements, and

                  (c) the preparation and review of the form of any document or
         instrument relevant to this Agreement or any other Loan Document.

The Borrower further agrees to pay, and to save each of the Administrative
Agent, each Issuer and the Lenders harmless from all liability for, any stamp or
other taxes which may be payable in connection with the execution or delivery of
this Agreement, the borrowings hereunder, the issuance of the Notes, the
issuance of the Letters of Credit, or any other Loan Documents. During (i) the
existence of a Default and (ii) whether or not a Default still exists, after any
acceleration of the Obligations, the Borrower also agrees to reimburse the
Administrative Agent, each Lender and each Issuer upon demand for all reasonable
out-of-pocket expenses (including attorneys' fees and legal expenses of internal
and external attorneys, and accountants', engineers' and other consultants' fees
and expenses) incurred by the Administrative Agent, each Lender and each Issuer
in connection with (x) the negotiation of any restructuring or "work-out",
whether or not consummated, of any Obligations and (y) the enforcement of any
Obligations.

         SECTION 11.4. INDEMNIFICATION. In consideration of the execution and
delivery of this Agreement by the Administrative Agent, each Issuer and each
Lender and the extension of the Commitments, the Borrower hereby indemnifies,
exonerates and holds the Administrative Agent, each Issuer and each Lender and
each of their respective officers, directors, employees and agents
(collectively, the "Indemnified Parties") free and harmless from and against any
and all actions, causes of action,


                                     -100-
<PAGE>   108

suits, losses, costs, liabilities and damages, and expenses incurred in
connection therewith (irrespective of whether any such Indemnified Party is a
party to the action for which indemnification hereunder is sought), including
reasonable attorneys' fees and disbursements (collectively, the "Indemnified
Liabilities"), incurred by the Indemnified Parties or any of them as a result
of, or arising out of, or relating to

                  (a) any transaction financed or to be financed in whole or in
         part, directly or indirectly, with the proceeds of any Loan or the use
         of any Letter of Credit;

                  (b) any investigation, litigation or proceeding related to any
         acquisition or proposed acquisition by the Borrower or any of its
         Subsidiaries of all or any portion of the stock or assets of any
         Person, whether or not the Administrative Agent or such Issuer or such
         Lender is party thereto;

                  (c) any investigation, litigation or proceeding related to any
         environmental cleanup, audit, compliance or other matter relating to
         any Environmental Law or the condition of any facility or Property
         owned, leased or operated by the Borrower or any of its Subsidiaries;
         provided, however, that Indemnified Liabilities under this Section
         11.4(c) pertaining to Oil and Gas Properties located in the State of
         California shall be governed by the Unsecured Indemnity;

                  (d) the presence on or under, or the escape, seepage, leakage,
         spillage, discharge, emission, discharging or releases from, any
         facility or Property owned, leased or operated by the Borrower or any
         of its Subsidiaries thereof of any Hazardous Material (including any
         losses, liabilities, damages, injuries, costs, expenses or claims
         asserted or arising under any Environmental Law), regardless of whether
         caused by, or within the control of, the Borrower or any of its
         Subsidiaries; provided, however, that Indemnified Liabilities under
         this Section 11.4(d) pertaining to Oil and Gas Properties located in
         the State of California shall be governed by the Unsecured Indemnity;
         or

                  (e) any misrepresentation, inaccuracy or breach in or of
         Section 7.17 or Section 8.1.6, except for any such Indemnified
         Liabilities arising for the account of a particular Indemnified Party
         by reason of the relevant Indemnified Party's gross negligence or
         wilful misconduct. If and to the extent that the foregoing undertaking
         may be unenforceable for any reason, the Borrower hereby agrees to make
         the maximum contribution to the payment and satisfaction of each of the
         Indemnified Liabilities which is permissible under Applicable Law.

         SECTION 11.5. SURVIVAL. The obligations of the Borrower under Sections
5.3, 5.4, 5.5, 5.6, 11.3 and 11.4 shall in each case survive any termination of
this


                                     -101-
<PAGE>   109

Agreement, the payment in full of all Obligations and the termination of all
Commitments. The representations and warranties made by each Obligor in this
Agreement and in each other Loan Document shall survive the execution and
delivery of this Agreement and each such other Loan Document.

         SECTION 11.6. SEVERABILITY. Any provision of this Agreement or any
other Loan Document which is prohibited or unenforceable in any jurisdiction
shall, as to such provision and such jurisdiction, be ineffective to the extent
of such prohibition or unenforceability without invalidating the remaining
provisions of this Agreement or such Loan Document or affecting the validity or
enforceability of such provision in any other jurisdiction.

         SECTION 11.7. HEADINGS. The various headings of this Agreement and of
each other Loan Document are inserted for convenience only and shall not affect
the meaning or interpretation of this Agreement or such other Loan Document or
any provisions hereof or thereof.

         SECTION 11.8. EXECUTION IN COUNTERPARTS, EFFECTIVENESS, ETC. This
Agreement may be executed by the parties hereto in several counterparts, each of
which shall be executed by the Borrower, the Administrative Agent, each Issuer
and each Lender and be deemed to be an original and all of which shall
constitute together but one and the same agreement. This Agreement shall become
effective when counterparts hereof are executed on behalf of the Borrower, the
Administrative Agent, and each Lender, and the Administrative Agent has
determined that the conditions set forth in Section 6.1 have been satisfied..
This Agreement is made and entered into for the sole protection and legal
benefit of the Borrower, the Administrative Agent and the Lenders and Persons
indemnified hereunder, and their permitted successors and assigns, and no other
Person shall be a direct or indirect legal beneficiary of, or have any direct or
indirect cause of action or claim in connection with, this Agreement or any of
the other Loan Documents.

         SECTION 11.9. GOVERNING LAW; ENTIRE AGREEMENT. THIS AGREEMENT, THE
NOTES AND EACH OTHER LOAN DOCUMENT (OTHER THAN THE MORTGAGES OR AS EXPRESSLY
PROVIDED IN ANY SUCH DOCUMENT) SHALL EACH BE DEEMED TO BE A CONTRACT MADE UNDER
AND GOVERNED BY THE INTERNAL LAWS OF THE STATE OF TEXAS. This Agreement, the
Notes and the other Loan Documents constitute the entire understanding among the
parties hereto with respect to the subject matter hereof and supersede any prior
agreements, written or oral, with respect thereto.

         SECTION 11.10. SUCCESSORS AND ASSIGNS. This Agreement shall be binding
upon and shall inure to the benefit of the parties hereto and their respective
successors and assigns; provided, however, that:




                                     -102-
<PAGE>   110



                  (a) the Borrower may not assign or transfer its rights or
         obligations hereunder without the prior written consent of the
         Administrative Agent, all Issuers and all Lenders; and

                  (b) the rights of sale, assignment and transfer of Lenders are
         subject to Section 11.11.

         SECTION 11.11. SALE AND TRANSFER OF LOANS AND NOTES; PARTICIPATIONS IN
LOANS AND NOTES. Each Lender may assign, or sell participations in, its Loans
and Commitments and participations in Letters of Credit to one or more other
Persons in accordance with this Section 11.11.

         SECTION 11.11.1. ASSIGNMENTS. A Lender may at any time assign and
delegate to one or more Eligible Assignees (each Person to whom such assignment
and delegation is to be made, being hereinafter referred to as an "Assignee
Lender"), all or any fraction of such Lender's total Loans and Commitments
(which assignment and delegation shall be of a constant, and not a varying,
percentage of all such Lender's Loans and Commitments) in a minimum aggregate
amount of $5,000,000 (or the entire remaining amount of such Lender's Loans and
Commitments); provided, however, that such Lender is required at all times to
maintain Loans, Letters of Credit Outstandings and Commitments hereunder in an
aggregate amount of $5,000,000 (unless such Lender shall have reduced its Loans,
Letters of Credit Outstandings and Commitments to zero); provided, further,
however, that the Borrower and each other Obligor shall be entitled to continue
to deal solely and directly with such Lender in connection with the interests so
assigned and delegated to an Assignee Lender until

                  (a) written notice of such assignment and delegation, together
         with payment instructions, addresses and related information with
         respect to such Assignee Lender, shall have been given to the Borrower
         and the Administrative Agent by such Lender and such Assignee Lender,

                  (b) such Assignee Lender shall have executed and delivered to
         the Borrower, the Administrative Agent and such Lender a Lender
         Assignment Notice, accepted by such Lender, the Borrower (if required)
         and the Administrative Agent, and

                  (c) the processing fees described below shall have been paid.

From and after the date that the Administrative Agent and the Borrower (if
required) accepts such Lender Assignment Notice, (x) the Assignee Lender
thereunder shall be deemed automatically to have become a party hereto and to
the extent that rights and obligations hereunder have been assigned and
delegated to such Assignee Lender in connection with such Lender Assignment
Notice, shall have the rights and obligations of a Lender hereunder and under
the other Loan Documents, and (y) the assignor


                                     -103-
<PAGE>   111

Lender, to the extent that rights and obligations hereunder have been assigned
and delegated by it in connection with such Lender Assignment Notice, shall be
released from its obligations hereunder and under the other Loan Documents.
Within five (5) Business Days after the later to occur of (i) its receipt of
notice that the Administrative Agent has received and accepted an executed
Lender Assignment Notice and (ii) the Borrower's receipt and acceptance (if
required) of the Lender Assignment Notice executed by the Administrative Agent
and all other parties thereto, the Borrower shall execute and deliver to the
Administrative Agent (for delivery to the relevant Assignee Lender) a new Note
evidencing such Assignee Lender's assigned Loans and Commitments and, if the
assignor Lender has retained Loans and Commitments hereunder, a replacement Note
in the principal amount of the Loans and Commitments retained by the assignor
Lender hereunder (each such Note to be in exchange for, but not in payment of,
the corresponding Note then held by such assignor Lender). The assignor Lender
shall mark the predecessor Note "exchanged" and deliver it to the Borrower.
Accrued interest on that part of the predecessor Note evidenced by the new Note,
and accrued fees, shall be paid as provided in the Lender Assignment Notice.
Accrued interest on that part of the predecessor Note evidenced by the
replacement Note shall be paid to the assignor Lender. Accrued interest and
accrued fees shall be paid at the same time or times provided in the predecessor
Notes and in this Agreement. Such assignor Lender or such Assignee Lender must
also pay a processing fee to the Administrative Agent upon delivery of any
Lender Assignment Notice in the amount of $3,500. Any attempted assignment and
delegation not made in accordance with this Section 11.11.1 shall be null and
void. Nothing contained in this Agreement shall prohibit any Lender from
pledging or assigning any Note to any Federal Reserve Bank in accordance with
Applicable Law.

         SECTION 11.11.2. PARTICIPATIONS. A Lender may at any time sell to one
or more commercial banks or other Persons (each of such commercial banks and
other Persons being herein called a "Participant") participating interests in
any of the Loans, Commitments, or other interests of such Lender hereunder;
provided, however, that

                  (a) no participation contemplated in this Section 11.11.2
         shall relieve a Lender from its Commitments or its other obligations
         hereunder or under any other Loan Document,

                  (b) such Lender shall remain solely responsible for the
         performance of its Commitments and such other obligations,

                  (c) the Borrower and each other Obligor shall continue to deal
         solely and directly with such Lender in connection with such Lender's
         rights and obligations under this Agreement and each of the other Loan
         Documents,




                                     -104-
<PAGE>   112



                  (d) the Borrower shall not be required to pay any amount under
         Section 5.6 that is greater than the amount which it would have been
         required to pay had no participating interest been sold, and

                  (e) any agreement pursuant to which any Lender may grant such
         a participating interest shall provide that such Lender shall retain
         the sole right and responsibility to enforce the obligations of the
         Borrower and the Issuer hereunder including, without limitation, the
         right to approve any amendment, modification or waiver of any provision
         of this Agreement; provided that such participation agreement may
         provide that such Lender will not agree to any modification, amendment
         or waiver of this Agreement described in clause (ii) or (iii) of
         Section 11.1(b) without the consent of the Participant.

The Borrower acknowledges and agrees that each Participant shall, to the extent
provided in its participation agreement, be entitled to the benefits of Sections
5.3, 5.4, 5.5, and 5.6 (except as provided in Section 11.11.2(d)), 11.3 and 11.4
with respect to its participation interest.

         SECTION 11.12. FORUM SELECTION AND CONSENT TO JURISDICTION. ANY
LITIGATION BASED HEREON, OR ARISING OUT OF, UNDER, OR IN CONNECTION WITH, THIS
AGREEMENT OR ANY OTHER LOAN DOCUMENT, OR ANY COURSE OF CONDUCT, COURSE OF
DEALING, STATEMENTS (WHETHER ORAL OR WRITTEN) OR ACTIONS OF THE ADMINISTRATIVE
AGENT, ANY ISSUER OR ANY LENDER OR THE BORROWER SHALL BE BROUGHT AND MAINTAINED
IN THE COURTS OF THE STATE OF TEXAS OR IN THE UNITED STATES DISTRICT COURT FOR
THE NORTHERN DISTRICT OF TEXAS; PROVIDED, HOWEVER, THAT ANY SUIT SEEKING
ENFORCEMENT AGAINST ANY COLLATERAL OR OTHER PROPERTY MAY BE BROUGHT, AT THE
ADMINISTRATIVE AGENT'S OPTION, IN THE COURTS OF ANY JURISDICTION WHERE SUCH
COLLATERAL OR OTHER PROPERTY MAY BE FOUND. THE BORROWER HEREBY EXPRESSLY AND
IRREVOCABLY SUBMITS TO THE JURISDICTION OF THE COURTS OF THE STATE OF TEXAS AND
OF THE UNITED STATES DISTRICT COURT FOR THE NORTHERN DISTRICT OF TEXAS FOR THE
PURPOSE OF ANY SUCH LITIGATION AS SET FORTH ABOVE AND IRREVOCABLY AGREES TO BE
BOUND BY ANY FINAL, NON-APPEALABLE JUDGMENT RENDERED THEREBY IN CONNECTION WITH
SUCH LITIGATION. THE BORROWER FURTHER IRREVOCABLY CONSENTS TO THE SERVICE OF
PROCESS BY REGISTERED MAIL, POSTAGE PREPAID, OR BY PERSONAL SERVICE WITHIN OR
WITHOUT THE STATE OF TEXAS. THE BORROWER HEREBY EXPRESSLY AND IRREVOCABLY
WAIVES, TO THE FULLEST EXTENT PERMITTED BY LAW, ANY OBJECTION WHICH IT MAY HAVE
OR HEREAFTER MAY HAVE TO THE LAYING OF VENUE OF ANY SUCH LITIGATION BROUGHT IN
ANY SUCH COURT REFERRED TO ABOVE AND ANY CLAIM THAT ANY SUCH LITIGATION HAS BEEN
BROUGHT IN AN INCONVENIENT FORUM. TO THE EXTENT THAT THE BORROWER HAS OR
HEREAFTER MAY ACQUIRE ANY IMMUNITY FROM JURISDICTION OF ANY COURT OR FROM ANY
LEGAL PROCESS


                                     -105-
<PAGE>   113

(WHETHER THROUGH SERVICE OR NOTICE, ATTACHMENT PRIOR TO JUDGMENT, ATTACHMENT IN
AID OF EXECUTION OR OTHERWISE) WITH RESPECT TO ITSELF OR ITS PROPERTY, THE
BORROWER HEREBY IRREVOCABLY WAIVES SUCH IMMUNITY IN RESPECT OF ITS OBLIGATIONS
UNDER THIS AGREEMENT AND THE OTHER LOAN DOCUMENTS.

         SECTION 11.13. WAIVER OF JURY TRIAL. THE ADMINISTRATIVE AGENT, EACH
ISSUER, EACH LENDER AND THE BORROWER HEREBY KNOWINGLY, VOLUNTARILY AND
INTENTIONALLY WAIVE ANY RIGHTS THEY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF
ANY LITIGATION BASED HEREON, OR ARISING OUT OF, UNDER, OR IN CONNECTION WITH,
THIS AGREEMENT OR ANY OTHER LOAN DOCUMENT, OR ANY COURSE OF CONDUCT, COURSE OF
DEALING, STATEMENTS (WHETHER ORAL OR WRITTEN) OR ACTIONS OF THE ADMINISTRATIVE
AGENT, EACH ISSUER, ANY LENDER OR THE BORROWER. THE BORROWER ACKNOWLEDGES AND
AGREES THAT IT HAS RECEIVED FULL AND SUFFICIENT CONSIDERATION FOR THIS PROVISION
(AND EACH OTHER PROVISION OF EACH OTHER LOAN DOCUMENT TO WHICH IT IS A PARTY)
AND THAT THIS PROVISION IS A MATERIAL INDUCEMENT FOR THE ADMINISTRATIVE AGENT,
EACH ISSUER AND EACH LENDER ENTERING INTO THIS AGREEMENT AND EACH SUCH OTHER
LOAN DOCUMENT.

         SECTION 11.14. OTHER TRANSACTIONS. Nothing contained herein shall
preclude the Administrative Agent or any other Lender or any of their respective
Affiliates from engaging in any transaction, in addition to those contemplated
by this Agreement or any other Loan Document, with the Borrower or any of its
Affiliates in which the Borrower or such Affiliate is not restricted hereby from
engaging with any other Person.

         SECTION 11.15. MAXIMUM INTEREST.

         (a) It is the intention of the parties hereto to comply strictly with
Applicable Laws pertaining to usury, if any; accordingly, notwithstanding any
provision to the contrary in this Agreement or in any of the other Loan
Documents, in no event shall the Loan Documents require or permit the payment,
taking, reserving, receiving, collection or charging of any sums constituting
interest under applicable laws which exceed the maximum amount of interest
permitted by such laws (such maximum lawful interest rate, if any, herein called
the "Highest Lawful Rate"). If any such excess interest is called for,
contracted for, charged, taken, reserved, or received in connection with any
Obligation under this Agreement or in any of the documents securing the payment
hereof or otherwise relating hereto, or in any communication by the
Administrative Agent, any Lender or any other person to the Borrower or any
other person, or in the event all or part of the principal or interest of any
Loan shall be prepaid or accelerated, so that under any of such circumstances
or under any other circumstance whatsoever the amount of interest contracted
for, charged, taken, reserved, or received on the amount of principal actually
outstanding from time to time



                                     -106-
<PAGE>   114
under this Agreement or any other Loan Document shall exceed the maximum
amount of interest permitted by Applicable Laws pertaining to usury, then in any
such event it is agreed as follows: (i) the provisions of this Section shall
govern and control, (ii) the aggregate of all consideration which constitutes
interest under Applicable Law that is called for, contracted for, charged,
taken, reserved or received under this Agreement and the other Loan Documents,
or under any of the other aforesaid agreements or otherwise in connection with
this Agreement shall under no circumstances exceed the Highest Lawful Rate, any
such excess shall be credited against the then unpaid principal balance of
Obligations of the Borrower by the Administrative Agent (or, if such Obligations
shall have been paid in full, such excess refunded to Borrower by the Lenders);
(iii) all sums paid, or agreed to be paid, to the Administrative Agent for the
benefit of the Lenders for the use, forbearance and detention of the amounts
owed under this Agreement by the Borrower hereunder shall, to the extent
permitted by Applicable Law, be amortized, prorated, allocated and spread
throughout the full term of the Obligations, including all prior and subsequent
renewals and extensions, owed under this Agreement and the other Loan Documents
until payment in full so that the actual rate of interest is uniform throughout
the full term thereof; and (iv) if at any time the interest provided pursuant to
this Agreement together with any other fees payable pursuant to this Agreement
and the other Loan Documents and deemed interest under Applicable Law, exceeds
that amount which would have accrued at the Highest Lawful Rate, the amount of
interest, swap breakage, and any such fees to accrue pursuant to this Agreement
and the other Loan Documents shall be limited, notwithstanding anything to the
contrary in this Agreement or in any other Loan Document to that amount which
would have accrued at the Highest Lawful Rate, but any reductions in the
interest otherwise provided pursuant to this Agreement, as applicable, shall be
carried forward and collected in periods in which the amount of interest
accruing otherwise pursuant to this Agreement shall be less than the Highest
Lawful Rate until the total amount of interest (including such fees deemed to be
interest) accrued pursuant to this Agreement and the other Loan Documents equals
the amount of interest which would have accrued if a varying rate per annum
equal to the Alternate Base Rate had at all times been in effect plus the amount
of fees which would have been received but for the effect of this Section and
the Highest Lawful Rate limitation imposed in Section 3.2.1. Without limiting
the foregoing, all calculations of the rate of interest contracted for, charged,
taken, reserved, or received in connection herewith which are made for the
purpose of determining whether such rate exceeds the maximum lawful rate shall
be made to the extent permitted by Applicable Laws by amortizing, prorating,
allocating and spreading during the period of the full term of the Obligations,
including all prior and subsequent renewals and extensions, all interest at any
time contracted for, charged, taken, reserved, or received. The terms of this
section shall be deemed to be incorporated in every Loan Document, security
instrument and other document executed in connection therewith, and every
communication relating thereto.




                                     -107-
<PAGE>   115



         (b) The Borrower, the Administrative Agent, each Issuer and each Lender
agree that Chapter 346 of the Texas Finance Code ("Chapter 346") (which
regulates certain revolving loan accounts and revolving tri-party accounts)
shall not apply to any revolving loan accounts created under this Agreement, the
Notes or the other Loan Documents or maintained in connection therewith.

         (c) To the extent that the interest rate laws of the State of Texas are
applicable to this Agreement, any Note or any other Loan Document, the
applicable interest rate ceiling is the indicated "weekly ceiling" determined in
accordance with Chapter 1D of the Texas Credit Code, as amended, and, to the
extent that any Obligation under this Agreement, any Note or any other Loan
Document is deemed an open end account as such term is defined in the Texas
Credit Code, the Administrative Agent retains the right to modify the interest
rate in accordance with Applicable Law.

         SECTION 11.16. CONTROLLING DOCUMENT. In the event of actual conflict in
the terms and provisions of this Agreement, the Notes and the other Loan
Documents, the terms and provisions of this Agreement will control.


                            [Signature pages follow]



                                     -108-
<PAGE>   116


         SECTION 11.17. NOTICE. THIS WRITTEN AGREEMENT TOGETHER WITH THE OTHER
LOAN DOCUMENTS REPRESENTS THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS
OF THE PARTIES.

THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their respective officers thereunto duly authorized as of the day
and year first above written.

                         BORROWER:

                         BARGO ENERGY COMPANY, a  Texas corporation


                         By
                           --------------------------------------------
                         Name: Jonathan M. Clarkson
                         Title: President

                         Address: 700 Louisiana Street
                                  Suite 3700
                                  Houston, Texas 77002
                                  Attn:  Jonathan M. Clarkson
                                  Fax:  713-236-9799


                         ADMINISTRATIVE AGENT:

                         BANK OF AMERICA, N.A., formerly Bank of America
                         National Trust and Savings Association



                         By
                           --------------------------------------------
                         Title: Managing Director
                         Printed Name: Ronald E. McKaig

                         Address for Notices:

                                  Agency Administrative Services
                                  901 Main Street
                                  Dallas, Texas  75202



                                     -109-
<PAGE>   117



                                  Attention: Vicky Wages
                                  Telecopier No: 214-290-8373
                                  Telephone No: 214-209-9254

                                  with copies to:

                                  333 Clay Street
                                  Suite 4550
                                  Houston, Texas  77002
                                  Attn: Ronald E. McKaig
                                  Fax:  (713) 651-4888



                                     -110-
<PAGE>   118




                         LENDERS:

                         BANK OF AMERICA, N.A.


                         By
                           --------------------------------------------
                         Title: Managing Director
                         Printed Name: Ronald E. McKaig




                                     -111-
<PAGE>   119




                         BANK ONE, TEXAS, NA


                         By
                           --------------------------------------------
                         Title:




                                     -112-
<PAGE>   120




                         WELLS FARGO BANK (TEXAS) NA


                         By
                           --------------------------------------------
                         Title:




                                     -113-



<PAGE>   121

                                                                      SCHEDULE I

                               DISCLOSURE SCHEDULE

ITEM 7.9        Litigation

                Falcon Resources, Inc. vs. Atlantic Richfield Company and Future
                Acquisition 1995, Ltd. in the District Court of Rusk County,
                Texas - This action concerns the purported exercise of a
                Preferential Right to Purchase S. Kilgore Waterflood Unit, which
                is a portion of the Arco East Texas Property.

ITEM 7.10       Ownership of Properties

                ARCO East Texas Acquisition - In Exhibit A to the Purchase and
                Sale Agreement dated August 3, 1999, between Atlantic Richfield
                Company and Future Acquisition 1995, Ltd., the parties
                identified a Title Defects sometimes called the "Marshall Title
                Defect".

                In an action entitled Stanley G. Marshall, Jr., Catherine Irene
                Marshall, Margaret Anne Warne and Robert R. Marshall v. ARCO Oil
                and Gas Company, a division of Atlantic Richfield Company, Civil
                Action No. 3217, District Court of 49th Judicial District,
                Zapata County, Texas, the court rendered a second modified
                judgment on March 19, 1998 against ARCO Oil and Gas Company, a
                division of Atlantic Richfield Company, in the amount of
                $68,986,926.75, which amount accrues interest at the rate of 10%
                compounded annually, as provided in the judgment (such judgment,
                as the same may be from time to time revised, re-entered,
                amended, partially satisfied, renewed or otherwise modified in
                any way, herein called the "Marshall Judgment").

                The Marshall Title Defect and the Marshall Judgment are the
                subject to the Arco Title Indemnity.

                An Amended Abstract of Judgment giving notice of the Marshall
                Judgment was recorded in the public records of the following
                counties, among others:

                Gregg County, Texas    File No. 9807331 on April 14, 1998
                Rusk County, Texas     Volume 2069, Page 193 on April 21, 1998
                Smith County, Texas
                Upshur County, Texas

<PAGE>   122

ITEM 7.12       Employee Benefit Plans

                None

ITEM 7.14       Claims and Liabilities

                None

ITEM 7.17       Environmental Matters

                None

ITEM 8.2.2(f)   Existing Indebtedness

                Indebtedness owed to Bank One Texas in the principal amount
                of approximately $9,300.00.

ITEM 8.2.5(c)   Existing Investments

                None

ITEM 8.2.13     Take or Pay Contracts

                None
<PAGE>   123

                                                                     SCHEDULE II

                                  SUBSIDIARIES


<TABLE>
<CAPTION>
                                                             TYPE OF       AUTHORIZED         OUTSTANDING          PERCENT
         SUBSIDIARY                       JURISDICTION       ENTITY          SHARES             SHARES            OWNERSHIP
         ----------------------------     ------------     ------------    ----------         ------------        ---------

<S>                                       <C>              <C>             <C>                <C>                 <C>
         Future Petroleum Corporation     Texas            Corporation       10,000              1,000              100%

         Alaska Eldorado Gold, Co.        Nevada           Corporation       1,000               1,000             99.8%

         Future Energy Corporation        Nevada           Corporation       50,000              1,000              100%

         Future CAL-TEX Corporation       Texas            Corporation       1,000,000           1,000              100%

         BMC Development No. 1            Texas            Limited                                                  *
         Limited Partnership                               Partnership

         NC1-Shawnee                      Texas            Limited                                                  *
         Limited Partnership                               Partnership

         Future Acquisition 1995, Ltd.    Texas            Limited                                                  *
                                                           Partnership
</TABLE>

- ------------

*  Owned 1% by Future Petroleum Corporation (Texas) and 99% by Future Energy
   Corporation


a.  Future Acquisition 1995 and Future Petroleum Corporation are qualified to do
business in the State of Louisiana, Mississippi, New Mexico.
b.  Future Cal-Tex Corporation is qualified to do business in the state of
California.
c.  NCI-Shawnee Limited Partnership, Future Petroleum Corporation and BMC
Development No. 1 Limited Partnership are qualified to do business in the State
of Oklahoma.
d.  NCI-Shawnee Limited Partnership, BMC Development No. 1 Limited Partnership
and Future Acquisition 1995, Ltd. are qualified to do business in the State of
Nevada.

<PAGE>   124

                                                                    SCHEDULE III


                             ADMINISTRATIVE DETAILS


BANK OF AMERICA, N.A.

Percentage:   50%

Lending office for Base Rate Loans:

901 Main Street
Dallas, Texas  75202
Attention:  Vicky Wages
Telephone:  214-290-8373
Facsimile:  214-209-9254

Lending Office for LIBO Rate Loans:

901 Main Street
Dallas, TX  75202
Attention:  Vicky Wages
Telephone:  214-290-8373
Facsimile:  214-209-9254


BANK ONE, TEXAS, NA

Percentage:   30%

Lending office for Base Rate Loans:

Bank One, Texas, NA
910 Travis
TX2-4330
Houston, TX  77002

Credit Contact:            Christine M. Macan, Vice President
                           Telephone:  713-751-3484
                           Facsimile:  713-751-3544

Operations Contact:        Eleanor Martinez, Participation/Syndication Analyst

<PAGE>   125


                           500 Throckmorton
                           West Complex PG6
                           Fort Worth, TX  76102
                           Telephone:  817-884-4535
                           Facsimile:  817-884-4651

Lending Office for LIBO Rate Loans:

Bank One, Texas, NA
910 Travis
TX2-4330
Houston, TX  77002

Credit Contact:            Christine M. Macan, Vice President
                           Telephone:  713-751-3484
                           Facsimile:  713-751-3544

Operations Contact:        Eleanor Martinez, Participation/Syndication Analyst
                           Bank One, Texas, NA
                           500 Throckmorton
                           West Complex PG6
                           Fort Worth, TX  76102
                           Telephone:  817-884-4535
                           Facsimile:  817-884-4651



WELLS FARGO BANK (TEXAS), NA

Percentage:      20%

Lending office for Base Rate Loans:

Wells Fargo Bank (Texas), NA
1000 Louisiana
Third Floor
Houston, TX  77002

Credit Contact:            Brian K. Otis, Assistant Vice President
                           Telephone:  713-819-1316
                           Facsimile:  713-739-1087

Operations Contact:        Stephen Elring, Assistant Vice President
                           201 Third


<PAGE>   126

                           San Francisco, CA  94103
                           Telephone:  415-477-5425
                           Facsimile:  415-979-0675

Lending Office for LIBO Rate Loans:

Wells Fargo Bank (Texas), NA
1000 Louisiana
Third Floor
Houston, TX  77002

Credit Contact:            Brian K. Otis, Assistant Vice President
                           Telephone:  713-819-1316
                           Facsimile:  713-739-1087

Operations Contact:        Stephen Elring, Assistant Vice President
                           201 Third
                           San Francisco, CA  94103
                           Telephone:  415-477-5425
                           Facsimile:  415-979-0675

<PAGE>   127


                                                                     SCHEDULE IV


                               EXISTING MORTGAGES


A.                   Mortgage, Deed of Trust, Assignment, Security Agreement and
                     Financing Statement from Mortgagor to Bank of America was
                     recorded and filed as follows:

<TABLE>
<CAPTION>

                                  ORIGINAL                                             AMENDMENT
    JURISDICTION                  FILE NO.                            DATE              FILE NO.                            DATE
    ------------                  --------                            ----              --------                            ----
<S>                          <C>                                     <C>             <C>                                  <C>

1.  LOUISIANA

Ouachita Parish,             Volume 1630, Page 541                   12/2/98         Vol. 1633, Page 784                  12/17/98
Louisiana                    File No. 1243297                                        File No. 1244887
                             (Mortgage)

                             Volume 391, Page 341                    1/21/99
                             File No. 1247111
                             (Conveyance)

Vermillion Parish,           File No. 9813248                        12/2/98         File No. 9813911                     12/17/98
Louisiana                    (Mortgage)

                             File No. 9900755                        1/21/99
                             (Conveyance)

2.  MISSISSIPPI

Clarke County,               DT Deed Book 216, Page 7               10/22/98
Mississippi

Wayne County,                DT Deed Book 959, Page 358             10/22/98
Mississippi

3.  NEW MEXICO

Lea County,                  Book 901, Page 276                      8/24/98         Book 924, Page 492                   12/17/98
New Mexico                                                                           File No. 36851

Roosevelt County,            Book 53, Page 824                      10/23/98         Book 55, Page 193                    12/17/98
New Mexico

4.  OKLAHOMA

Grant County,                Book 515, Page 699                      8/24/98         Book 518, Page 039                   12/17/98
Oklahoma                                                                             File No. 2088
</TABLE>

<PAGE>   128

<TABLE>
<CAPTION>

                                  ORIGINAL                                             AMENDMENT
    JURISDICTION                  FILE NO.                            DATE              FILE NO.                            DATE
    ------------                  --------                            ----              --------                            ----
<S>                          <C>                                     <C>             <C>                                  <C>
Marshall County,             Book 673, Page 659                      8/24/98         Book 679, Page 117                   12/17/98
Oklahoma                                                                             File No. SF-4998

Pottawatomie County,         Book 2835, Page 232                     8/24/98         Book 2883, Page 278                  12/17/98
Oklahoma                                                                             File No. 17177

Pottawatomie County,         Book 2859, Page 101                    10/20/98
Oklahoma                     Rec. # 1998-14245

5.  TEXAS

Austin County,               File No. 994053                         7/13/98
Texas

Bastrop County,              Volume 955, Page 831                   12/31/98
Texas                        File No. 199814768

Brazos County,               Volume 3323, Page 195                   12/1/98
Texas                        File No. 0672275

                             Volume 3359, Page 119                    1/7/99
                             File No. 0675214

Burleson County,             Volume 163, Page 550                    12/1/98
Texas                        File No. 0003900

                             Volume 164, Page 175                   12/31/98
                             File No. 0004256

Carson County,               Volume 289, Page 756                    8/24/98         Vol. 292, Page 780                   12/17/98
Texas                                                                                File No. 0001984

Crane County,                Volume 400, Page 89                    10/26/98         Vol. 401, Page 732                   12/17/98
Texas                        File. No. 76025,                                        File No. 76282

Dawson County,               Volume 240, Page 239;                  10/22/98         Vol. 240, Page 727                   12/17/98
Texas                        File No. 98-3130                                        File No. 3634

Ector County,                Volume 1433, Page 787                   12/1/98         Vol. 1436, Page 0502                 12/17/98
Texas                        File No. 16298                                          File No. 17011

Fayette County,              Volume 1046, Page 414                   12/1/98
Texas
                             Volume 1049, Page 369                  12/31/98
                             File No. 98-7363

Gray County,                 Volume 734, Page 398                    8/24/98         Vol. 739, Page 189                   12/17/98
Texas                                                                                File No. 141597
</TABLE>

<PAGE>   129
<TABLE>
<CAPTION>

                                  ORIGINAL                                             AMENDMENT
    JURISDICTION                  FILE NO.                            DATE              FILE NO.                            DATE
    ------------                  --------                            ----              --------                            ----
<S>                          <C>                                     <C>             <C>                                  <C>
Harris County,               Doc. No. ###-##-####                   10/16/98         Doc. No. ###-##-####                 12/17/98
Texas                        300235009 T328911                                       T443676

Hutchinson County,           Volume 902, Page 263                    8/24/98         Vol. 921, Page 213                   12/17/98
Texas                                                                                File No. 0290432

Jackson County,              Volume 129, Page 212                    12/1/98
Texas                        File No. 26666

                             Volume 131,Page 228                      1/5/99

Jasper County,               Volume 222, Page 1                     10/22/98         File No. 125171                      12/17/98
Texas                        Document No. 123827

Live Oak County,             Volume 360, Page 1                     10/22/98         Vol. 362, Page 453                   12/17/98
Texas                        Reg. No. 0141952                                        File No. 142714

Lubbock County,              Volume 5965, Page 10                    8/24/98         Vol. 6099, Page 187                  12/17/98
Texas                                                                                File No. 43783

Matagorda County,            Volume 521,Page 570                     12/1/98         Vol. 523, Page 559                   12/17/98
Texas                        File No. 988068                                         File No. 988487

McMullen County,             Volume 138, Page 146                    12/1/98         Vol. 138, Page 385                   12/17/98
Texas                        File No. 54861                                          File No. 54917

Midland County,              Volume 1593, Page 430                   8/24/98         Vol. 1628, Page 32                   12/17/98
Texas                                                                                File No. 24121

Montgomery County,           Doc. No. 99047460;                      6/14/99         545-00-0999                           6/14/99
Texas                        545-00-0960

Montgomery County,           File No. 9947462                        6/14/99
Texas

Moore County,                Volume 499, Page 636                    8/24/98         Vol. 504, Page 469                   12/17/98
Texas                                                                                File No. 131996

San Patricio County,         File No. 467305                        10/22/98         File No. 469028                      12/17/98
Texas

Waller County,               File No. 994753                          8/5/99
Texas

Wharton County,              Volume 299, Page 423                    0/26/98         Vol. 305, Page 545                   12/17/98
Texas                        Document No. 190511                                     File No. 191762

Wichita County,              Volume 2030, Page 280                   8/24/98         Vol. 2058, Page 321                  12/17/98
Texas                                                                                File No. 24402
</TABLE>

<PAGE>   130
<TABLE>
<CAPTION>

                                  ORIGINAL                                             AMENDMENT
    JURISDICTION                  FILE NO.                            DATE              FILE NO.                            DATE
    ------------                  --------                            ----              --------                            ----
<S>                          <C>                                     <C>             <C>                                  <C>

6.  CALIFORNIA

Kern County,                 Doc. 0198114687                         8/24/98         Doc. 0198184114                      12/30/98
California                   Doc. 0198118749                         8/31/98
</TABLE>

- ----------------------------


<PAGE>   131


                                                                      SCHEDULE V

                               HEDGING AGREEMENTS


o       Approximately 50% (or 150,000 MMBtu per month) of current gas production
        is hedged through calendar year 1999 as follows:

        -       Collar hedge for 65,000 MMBtu based on the Southern California
                Border Index with a floor of $2.00 and a cap of $2.45.

        -       Collar hedge for 85,000 MMBtu based on the Houston Ship Channel
                Index with a floor of $2.00 and a cap of $2.04.

o       Approximately 50% of current oil production is hedged as follows:

        -       22,800 barrels beginning October 1999 declining each month to
                18,750 barrels in September 2000 at a floor of $18.00 and a cap
                of $20.75.

        -       27,400 barrels beginning October 1999 declining each month to
                23,250 barrels in September 2000 at a floor of $18.00 and a cap
                of $23.08.

o       For the 12 month period October 2000 - September 2001 a straight swap is
        in place for approximately 25% of current monthly oil production at
        $17.55 per barrel. (18,525 barrels beginning 10/00 declining to 16,200
        barrels in 9/01)

o       For the 12 month period October 2000 - September 2001 a straight swap is
        in place for approximately 25% of current monthly oil production at
        $18.05 per barrel. (22,825 barrels beginning 10/00 declining to 18,100
        barrels in 9/01)


<PAGE>   132


                                                                     SCHEDULE VI

                             UPDATED TITLE SEARCHES


TEXAS

Phil Wahl -

1.     Crane County - Atlantic State Nos. 1-8, Johnson State, Tubb State Wells
2.     Wharton County - Rasmussen No. 2 Well
3.     Jasper County - Mixson Unit No. 1 and Mixson No. 1
4.     [N/A]
5.     San Patricio County - Waldo Haisley No. 1 GU
6.     Jackson County - Bright Falcon Prospect, Hillman No. 1 Well
7.     Brazos County - Kuder Prospect, Kuder #2 Well
8.     McMullen County - San Miguel Prospect, Clifton Wheeler 3, 8, 9 and 15,
       San Miguel Creek Gu, Louis Gubbels No. 24
9.     Matagorda County - Turtle Creek Prospect, Don L. Batchelder Gu No. 1
10.    Brazos County - Riverside Campus Prospect, Riverside Campus 3 and 6 Oil
       Units
11.    Ector County - Cowden South Prospect, Lyda Mae Johnson Nos. 1A and 2, JE
       Bagley Nos. 1, 2, 11, 12, 14 and 15A
12.    Harris and Montgomery Counties - Cross Creek Field
13.    Austin County - Post-closing opinion for Raccoon Bend

Gerald E. Thornton, Jr. (Matthews and Branson) -

1.     Moore County - Panhandle

LOUISIANA

Jim Mansfield (Liskow and Lewis) -

1.     Vermilion Parish - North Leroy Field

Jeff Townsend -

1.     Ouachita Parish - Cheniere Cadeville


<PAGE>   133



OKLAHOMA

Michael Burris -

1.    Pottawatomie County - Shawnee Townsite (Skinner) Unit

CALIFORNIA

Tim Lewy -

1.    Kern County - South Coles Levee


<PAGE>   134



                                                                       EXHIBIT A

                                     FORM OF
                           SECOND AMENDED AND RESTATED
                             SECURED PROMISSORY NOTE


$_____________                                               September 30, 1999


        FOR VALUE RECEIVED, the undersigned, BARGO ENERGY COMPANY, a Texas
corporation (the "Borrower"), promises to pay to the order of
___________________ (the "Lender") on the Stated Maturity Date the principal sum
of ___________________________ DOLLARS ($_________) or, if less, the aggregate
unpaid principal amount of all Loans (whether or not shown on the schedule
attached hereto and any continuation thereof) made by the Lender pursuant to
that certain Second Amended and Restated Credit Agreement, dated as of September
30, 1999 (together with all amendments and other modifications, if any, from
time to time thereafter made thereto, the "Credit Agreement"), among the
Borrower, certain financial institutions and the Lender and Bank of America,
N.A., as administrative agent (the "Administrative Agent").

        The Borrower also promises to pay interest on the unpaid principal
amount hereof from time to time outstanding from the date hereof until maturity
(whether by acceleration or otherwise) and, after maturity, until paid, at the
rates per annum and on the dates specified in the Credit Agreement.

        Payments of both principal and interest are to be made in lawful money
of the United States of America in same day or immediately available funds to
the account designated by the Administrative Agent pursuant to the Credit
Agreement.

        This Note, together with the other Notes made and given in favor of the
other Lenders, amends, restates and consolidates those note(s) previously made
and given by Future Petroleum Corporation, a Utah corporation, to which the
Borrower is the successor-by-merger.

        This Note is one of the Notes referred to in, and evidences Indebtedness
incurred under, the Credit Agreement, to which reference is made for a
description of the security for this Note and for a statement of the terms and
conditions on which the Borrower is permitted and required to make prepayments
and repayments of principal of the Indebtedness evidenced by this Note and on
which such Indebtedness may be declared to be immediately due and payable.
Unless otherwise defined, terms used herein have the meanings provided in the
Credit Agreement.


<PAGE>   135


        All parties hereto, whether as makers, endorsers, or otherwise,
severally waive presentment for payment, demand, protest and notice of dishonor.

        THIS NOTE HAS BEEN DELIVERED IN DALLAS, TEXAS AND SHALL BE DEEMED TO BE
A CONTRACT MADE UNDER AND GOVERNED BY THE INTERNAL LAWS OF THE STATE OF TEXAS.



                                            BARGO ENERGY COMPANY, a Texas
                                            corporation



                                      By:
                                         ---------------------------------------
                                             Name: Jonathan M. Clarkson
                                             Title:   President


<PAGE>   136


                          LOANS AND PRINCIPAL PAYMENTS


<TABLE>
<CAPTION>


            Amount         LIBO          Amount of Principal      Unpaid Principal
         of Loan Made      Rate               Repaid                  Balance
         ------------    --------        -------------------      ----------------




                         Interest         Base         LIBO       Base         LIBO                       Notation
Date                     Period           Rate         Rate       Rate         Rate        Total          Made By
===================================================================================================================
<S>                       <C>             <C>          <C>        <C>          <C>         <C>            <C>


- -------------------------------------------------------------------------------------------------------------------


- -------------------------------------------------------------------------------------------------------------------


- -------------------------------------------------------------------------------------------------------------------


- -------------------------------------------------------------------------------------------------------------------


- -------------------------------------------------------------------------------------------------------------------


- -------------------------------------------------------------------------------------------------------------------


- -------------------------------------------------------------------------------------------------------------------


- -------------------------------------------------------------------------------------------------------------------


- -------------------------------------------------------------------------------------------------------------------


- -------------------------------------------------------------------------------------------------------------------


===================================================================================================================

</TABLE>


<PAGE>   137


                                                                       EXHIBIT B

                           FORM OF SECURITY AGREEMENT



<PAGE>   138


                                                                     EXHIBIT C-1

                                     FORM OF
                                BORROWING REQUEST



BANK OF AMERICA, N.A., as Administrative Agent
901 Main Street, 14th Floor
Dallas, Texas  75202
Telecopy:
          -------------

Attention:        [Name]
                  [Title]


         Re:      Bargo Energy Company


Ladies and Gentlemen:

        This Borrowing Request is delivered to you pursuant to Section 2.3 of
the Second Amended and Restated Credit Agreement, dated as of September 30, 1999
(together with all amendments, if any, from time to time made thereto, the
"Credit Agreement"), among Bargo Energy Company, a Texas corporation (the
"Borrower"), certain financial institutions (the "Lenders") and BANK OF AMERICA,
N.A., as administrative agent for the Lenders (the "Administrative Agent").
Unless otherwise defined herein or the context otherwise requires, terms used
herein have the meanings provided in the Credit Agreement.

        The Borrower hereby requests that a Loan be made in the aggregate
principal amount of $__________ on __________, 19__ as a [LIBO Rate Loan having
an Interest Period of ____ months] [Base Rate Loan].

        The Borrower hereby acknowledges that, pursuant to Section 6.3.2 of the
Credit Agreement, each of the delivery of this Borrowing Request and the
acceptance by the Borrower of the proceeds of the Loans requested hereby
constitute a representation and warranty by the Borrower that, on the date of
such Loans, and before and after giving effect thereto and to the application of
the proceeds therefrom, all statements set forth in Section 6.3.1 are true and
correct in all material respects (unless stated to relate solely to an earlier
date, in which case such statements shall be true and correct as of such earlier
date).

        The Borrower agrees that if prior to the time of the borrowing requested
hereby any matter certified to herein by it will not be true and correct at such
time as if then made, it

<PAGE>   139

will immediately so notify the Administrative Agent. Except to the extent, if
any, that prior to the time of the borrowing requested hereby the Administrative
Agent shall receive written notice to the contrary from the Borrower, each
matter certified to herein shall be deemed once again to be certified as true
and correct at the date of such borrowing as if then made.

        Please wire transfer the proceeds of the borrowing to the following
account[s] ______________________________.

        IN WITNESS WHEREOF, the Borrower has caused this request to be executed
and delivered by its duly Authorized Officer as of __________ __, 19__.


                                      BARGO ENERGY COMPANY, a Texas corporation



                                      By:
                                         --------------------------------------
                                              Name: Jonathan M. Clarkson
                                              Title: President



<PAGE>   140


                                                                     EXHIBIT C-2

                                     FORM OF
                         CONTINUATION/CONVERSION NOTICE


Bank of America, N.A., as Administrative Agent
901 Main Street, 14th Floor
Dallas, Texas  75202
Telecopy:
         --------------

Attention:        [Name]
                  [Title]

         Re:      Bargo Energy Company


Ladies and Gentlemen:

        This Continuation/Conversion Notice is delivered to you pursuant to
Section 2.4 of the Second Amended and Restated Credit Agreement, dated as of
September 30, 1999 (together with all amendments, if any, from time to time made
thereto, the "Credit Agreement"), Bargo Energy Company, a Texas corporation (the
"Borrower"), certain financial institutions (the "Lenders") and Bank of America,
N.A., as agent for the Lenders (the "Administrative Agent"). Unless otherwise
defined herein or the context otherwise requires, terms used herein have the
meanings provided in the Credit Agreement.

        The Borrower hereby requests that on _______, 19__,

                  (1) $_________ of the presently outstanding principal amount
        of the Loans originally made on _________, 19__ [and $_______ of the
        presently outstanding principal amount of the Loans originally made on
         _______, 19__],

                  (2) and all presently being maintained as [LIBO Rate
        Loans] [Base Rate Loans],

                  (3) be [converted into] [continued as],

                  (4) [LIBO Rate Loans having an Interest Period of ____
        months] [Base Rate Loans].



<PAGE>   141


        The Borrower hereby:

                  (a)      certifies and warrants that no Default has occurred
        and is continuing; and

                  (b)      agrees that if prior to the time of such continuation
        or conversion any matter certified to herein by it will not be true and
        correct at such time as if then made, it will immediately notify the
        Lender.

Except to the extent, if any, that prior to the time of the continuation or
conversion requested hereby the Administrative Agent shall receive written
notice to the contrary from the Borrower, each matter certified to herein shall
be deemed to be certified at the date of such continuation or conversion as if
then made.

        IN WITNESS WHEREOF, the Borrower has caused this request to be executed
and delivered by its duly Authorized Officer as of __________ __, 19__.


                                              BARGO ENERGY COMPANY, a Texas
                                              corporation



                                      By:
                                          --------------------------------------
                                              Name: Jonathan M. Clarkson
                                              Title: President



<PAGE>   142


                                                                       EXHIBIT D


                                FORM OF GUARANTY



<PAGE>   143


                                                                     EXHIBIT E-1


                                FORM OF MORTGAGE




<PAGE>   144


                                                                     EXHIBIT E-2


                           FORM OF CALIFORNIA MORTGAGE




<PAGE>   145


                                                                     EXHIBIT F-1


                        FORM OF PLEDGE AGREEMENT (STOCK)


<PAGE>   146


                                                                     EXHIBIT F-2


                FORM OF PLEDGE AGREEMENT (PARTNERSHIP INTERESTS)




<PAGE>   147


                                                                       EXHIBIT G


                            LENDER ASSIGNMENT NOTICE


BANK OF AMERICA, N.A., as Administrative Agent
901 Main Street, 14th Floor
Dallas, Texas  75202
Telecopy:
          ---------------

Attention:        [Name]
                  [Title]



         Re:      Bargo Energy Company

Ladies and Gentlemen:

        We refer to clause (b) of Section 11.11.1 of the Second Amended and
Restated Credit Agreement, dated as of September 30, 1999 (together with all
amendments and other modifications, if any, from time to time thereafter made
thereto, the "Credit Agreement"), among Bargo Energy Company, a Texas
corporation (the "Borrower"), certain financial institutions (the "Lenders") and
BANK OF AMERICA, N.A., as agent for the Lenders (the "Administrative Agent").
Unless otherwise defined herein or the context otherwise requires, terms used
herein have the meanings provided in the Credit Agreement.

        This notice is delivered to you pursuant to clause (b) of Section
11.11.1 of the Credit Agreement and also constitutes notice to each of you,
pursuant to clause (a) of Section 11.11.1 of the Credit Agreement, of the
assignment and delegation to _______________ (the "Assignee") of ___% (and the
Assignor hereby assigns and delegates to the Assignee __%_) of the Loans and
Commitments of _____________ (the "Assignor") outstanding under the Credit
Agreement on the date hereof. After giving effect to the foregoing assignment
and delegation, the Assignor's and the Assignee's Percentages for the purposes
of the Credit Agreement are set forth on Schedule I hereto. The Assignor makes
such assignment and delegation without any representations, warranties or
recourse whatsoever except that the Assignor is the legal and beneficial owner
of the interest being assigned by it hereunder and that such interest is free
and clear of any adverse claim. [Add paragraph dealing with accrued interest
with respect to Loans assigned.]

        The Assignee hereby acknowledges and confirms that it is an Eligible
Assignee and it has received a copy of the Credit Agreement and the other Loan
Documents and the

<PAGE>   148

exhibits related thereto, together with copies of the documents which were
required to be delivered under the Credit Agreement as a condition to the making
of the Credit Extensions thereunder.

        Except as otherwise provided in the Credit Agreement, effective as of
the date of delivery hereof

                (a) the Assignee

                        (i) shall be deemed automatically to have become a party
                to the Credit Agreement, have all the rights and obligations of
                a "Lender" under the Credit Agreement and the other Loan
                Documents as if it were an original signatory thereto to the
                extent specified in the second paragraph hereof; and

                        (ii) agrees to be bound by the terms and conditions set
                forth in the Credit Agreement and the other Loan Documents as if
                it were an original signatory thereto; and

                (b) the Assignor shall be released from its obligations under
        the Credit Agreement and the other Loan Documents to the extent
        specified in the second paragraph hereof.

        The Assignor and the Assignee hereby agree that the [Assignor]
[Assignee] will pay to the Administrative Agent the processing fee referred to
in Section 11.11.1 of the Credit Agreement upon the delivery hereof.

        Administrative information for the Assignee is set forth in Schedule II
hereto.




<PAGE>   149


        This notice may be executed by the Assignor and Assignee in separate
counterparts, each of which when so executed and delivered shall be deemed to be
an original and all of which taken together shall constitute one and the same
instrument.

                                     [ASSIGNOR]


                                     By:
                                        ----------------------------------------
                                          Title:


                                     [ASSIGNEE]


                                     By:
                                        ----------------------------------------
                                           Title:



CONSENTED TO AND ACKNOWLEDGED:

BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT


By:
   ---------------------------------
         Title:


BARGO ENERGY COMPANY


By:
   ---------------------------------
         Title:


<PAGE>   150



                                                                      SCHEDULE I
                                                                       TO LENDER
                                                               ASSIGNMENT NOTICE

<TABLE>

ASSIGNOR'S ADJUSTED PERCENTAGES:

<S>                                                            <C>
Commitment and Loans:                                            __%

Letters of Credit:                                               __%



ASSIGNEE'S PERCENTAGES:

Commitment and Loans:                                            __%

Letters of Credit:                                               __%

</TABLE>

<PAGE>   151


                                                                     SCHEDULE II
                                                                       TO LENDER
                                                               ASSIGNMENT NOTICE

ADDRESS FOR NOTICES:

Name of Assignee:
                 ---------------------
<PAGE>   152



                                                                       EXHIBIT H


                   FORM OF OPINIONS OF COUNSEL TO THE BORROWER



<PAGE>   153


                                                                     EXHIBIT I-1


                  FORM OF PRE-CLOSING TITLE OPINIONS OF SPECIAL
                          TITLE COUNSEL TO THE BORROWER


                        Form of Pre-Closing Title Opinion

                          [Letterhead of Title Counsel]


                                     [Date]




Bank of America, N.A., as Administrative Agent
c/o Mayer, Brown & Platt
700 Louisiana Street
Suite 3600
Houston, TX 77002

Attention:  Kevin L. Shaw

                                               PRE-CLOSING TITLE OPINION
                                               Interests of [Bargo Energy
                                               Company] [Future Acquisition
                                               1995, Ltd.]1,     County,
                                                            -----       --------


Gentlemen:

        This opinion is given in connection with the Second Amended and Restated
Credit Agreement ("Credit Agreement") dated as of September 30, 1999, among
Bargo Energy Company, a Texas corporation, as the borrower [("Borrower")]
[("Mortgagor")]2/, the various financial institutions as are now or may
hereafter become parties thereto (collectively, the "Lenders") and Bank of
America, N.A., formerly Bank of America National Trust and Savings Association,
as Administrative Agent for the Lenders (in such capacity, "Mortgagee").
Capitalized terms used in this opinion but not expressly defined herein shall
have the respective meanings given to them in the Credit Agreement.

- ----------------------

1/    Select entity as appropriate.

2/    Select entity as appropriate.
<PAGE>   154

        Please refer to our [Preliminary Title Opinion] ("Title Opinion") dated
__________, 199__, covering lands more particularly described therein
(collectively, the "Lands"). In addition to the title materials examined as
listed in the Title Opinion, we have examined copies of the following documents:

                         [HERE LIST DOCUMENTS EXAMINED]


        We are of the opinion that:

        A. Fully executed originals of items _____________________ should be
filed for record in the office of the [Clerk] of _____________ County of the
State of ______________. Upon the accomplishment of such recordation and
filings, the [Borrower] [Mortgagor] will constitute, as security for (i) Credit
Extensions, including the Loans made and to be made pursuant to the Credit
Agreement and to be evidenced by the Notes, and (ii) the obligations of
[Borrower] [Mortgagor] and its Affiliates to the Lenders and their Affiliates
under Hedging Agreements to which they are or may become parties, a legally
valid and enforceable first mortgage lien on the interests of [Borrower]
[Mortgagor] in the Lands and a first perfected security interest in the interest
of [Borrower] [Mortgagor] in all accounts and proceeds resulting from the sale
at the wellhead of minerals to be severed from the aforesaid interests of
[Borrower] [Mortgagor]. No other or further filings or recordings will be
required to establish, perfect and maintain such lien and security interest,
except as expressly set forth herein, subject to our comments and requirements
set forth hereinbelow.

        B. Following execution of the documents listed as items ____
_____________________ and recordation of the documents listed as
______________________________________ (in the order listed, and assuming that
no intervening adverse instruments are recorded), the interests of [Borrower]
[Mortgagor] and covered by your Mortgage, will be as follows:

<TABLE>
<CAPTION>

1.       [Tract 1:]                         Operating        Net Revenue
                                            Interest         Interest
                                            ---------        -----------
<S>                                         <C>             <C>



         [Borrower][Mortgagor]              ---------        -----------
</TABLE>



                       [HERE LIST INTERESTS IN EACH TRACT]

        C. Under the applicable laws of the State of _____________, including
applicable recording, filing and registration laws and regulations, no mortgage,
documentary, stamp or similar taxes are payable in connection with the
execution, delivery

<PAGE>   155

or recording of the Mortgage or the transactions contemplated thereby,
insofar as the Mortgage and the transactions relate to property located in or
subject to the laws of the State of _______________, other than statutory
recording and filing fees to be paid upon the recording and filing of the
Mortgage and related UCC-1.

        D. Under the laws of the State of _______________, the priority of the
Mortgage, to the extent the Mortgage secures obligatory future advances and is a
conveyance of or creates a lien against a real property interest, is determined
by the date on which the Mortgage is recorded.

        E. Under the laws of the State of _______________ and local
jurisdictions therein, there is no statutory or regulatory lien in favor of any
governmental entity for (a) liability under _________ environmental laws or
regulations, or (b) damages (including natural resources damages) arising from
or costs incurred by such governmental entity in response to the release of a
hazardous or toxic waste, substance, pollutant, constituent, or other substance
into the environment which, if not of record in the mortgage records in the
County where such lands are located, would have priority over the Mortgage [HERE
STATE EXCEPTIONS, AS APPLICABLE].

        F. Under the laws of the State of _____________ and local jurisdictions
therein, there are no statutory and regulatory requirements relating to the
transfer of ownership or operation or sale of premises upon which there are
hazardous or toxic wastes, or upon which there are certain facilities which
indicate a likelihood of such wastes (except for various requirements that
regulatory bodies receive notification when an environmental permittee,
licensee, or notifier changes) which require (i) notification of the State or of
the local jurisdiction of such transfer, or sale, (ii) certification that there
has been no discharge of toxic or hazardous waste or other substances, or (iii)
in the event of a discharge, the assumption prior to such transfer of ownership,
or operation, or sale, of responsibility by the lender for the undertaking of
remedial measures to alleviate environmental contamination resulting from such
discharge.

        G. It is necessary that a continuation statement be filed regarding the
Financing Statement within six (6) months prior to the end of each five (5) year
period.

        This finding of title, and mortgaged interests of [Borrower] [Mortgagor]
in your favor, is subject to all unsatisfied (in whole or in part) Requirement
of the Title Opinion, as well as all limitations, comments and remarks set forth
therein and herein.

        After the proper execution and recordation of the documents listed as
______________________________________, as required above, it will be necessary
to examine the Public Records of ______________________ County, _______________,
to insure that there have been no adverse alienations, liens or encumbrances
recorded or filed, or suffered to be recorded or filed, since the certification
dates of the Abstracts examined in connection with the rendition of the Title
Opinion. We will furnish you a

<PAGE>   156


Post-Closing Title Opinion after execution of the documents listed above as
_________________________________________ and recordation of the documents
listed above as _________________________________, completion of the records
search set forth above, and our examination of the documentation in connection
with same, such opinion to be substantially in the form of that attached hereto.


                                                     Very truly yours,



                                                     --------------------------




<PAGE>   157


                                                                     EXHIBIT I-2


                              FORM OF POST-CLOSING
                            TITLE OPINIONS OF SPECIAL
                          TITLE COUNSEL TO THE BORROWER


                       Form of Post-Closing Title Opinion

                          [Letterhead of Title Counsel]


                             _______________, 199__


Bank of America, N.A., as Administrative Agent
c/o Mayer, Brown & Platt
700 Louisiana Street
Suite 3600
Houston, TX 77002

Attention:  Kevin L. Shaw

                                             POST-CLOSING TITLE OPINION
                                             Interests of [Bargo Energy Company]
                                             [Future Acquisition 1995, Ltd.]1/
                                             __________ County, ___________

Gentlemen:


        This opinion is rendered in connection with the closing under that
certain Second Amended and Restated Credit Agreement dated as of September 30,
1999 (the "Credit Agreement"), among Bargo Energy Company, a Texas corporation,
as the borrower [(the "Borrower")] [(the "Mortgagor")]2/, the various financial
institutions as are now or may hereafter become parties thereto (collectively,
the "Lenders") and Bank of America, N.A., formerly Bank of America National
Trust and Savings Association, as Administrative Agent for the Lenders (in such
capacity, "Mortgagee"). Capitalized terms used in this opinion but not expressly
defined herein shall have the respective meanings given to them in the Credit
Agreement.

- ---------------------

1/   Select entity as appropriate.

2/   Select entity as appropriate.

<PAGE>   158

        Please refer to our [here list prior Title Opinion] ("Title Opinion")
dated __________, 199__, covering lands more particularly described therein
(collectively the "Lands"). In addition to the title materials examined as
listed in the Title Opinion, we have examined executed originals of the
following documents:

                         [HERE LIST DOCUMENTS EXAMINED]


        We are of the opinion that:

        A. The Mortgage constitutes, as security for (i) Credit Extensions,
including the Loans made and to be made pursuant to the Credit Agreement and
evidenced by the Notes, and (ii) the obligations of the [Borrower][Mortgagor]
and its Affiliates to the Lenders and their Affiliates under Hedging Agreements
to which they are or may become parties, a legally valid and enforceable first
mortgage lien on the interests of the ("[Borrower] [Mortgagor]") in the Lands,
and a first perfected security interest in the interests of [Borrower]
[Mortgagor] in all accounts and proceeds resulting from the sale at the wellhead
of minerals to be severed from the aforesaid interests of [Borrower]
[Mortgagor]. No other or further filings or recordings are required to
establish, perfect and maintain such lien and security interest, except as
expressly set forth herein, subject to our comments and requirements set forth
hereinbelow.

        B. It is our opinion that the interests of [Borrower] [Mortgagor], and
covered by your Mortgage are as follows:

<TABLE>
<CAPTION>

1.       [Tract 1:]                         Operating       Net Revenue
                                            Interest        Interest
                                            ---------       -----------
<S>                                         <C>             <C>



         [Borrower][Mortgagor]              ---------       -----------
</TABLE>


                       [HERE LIST INTERESTS IN EACH TRACT]

        C. Under the applicable laws of the State of _____________, including
applicable recording, filing and registration laws and regulations, no mortgage,
documentary, stamp or similar taxes are payable in connection with the
execution, delivery or recording of the Mortgage or the transactions
contemplated thereby, insofar as the Mortgage and the transactions relate to
property located in or subject to the laws of the State of ________________,
other than statutory recording and filing fees which were paid upon the
recording and filing of the Mortgage and UCC-1.

        D. Under the laws of the State of ________________, the priority of the
Mortgage, to the extent the Mortgage secures obligatory future advances and is a


<PAGE>   159


conveyance of or creates a lien against a real property interest, was
established as of ___________, 199__.

        E. Under the laws of the State of ________________ and local
jurisdictions therein, there is no statutory regulatory lien in favor of any
governmental entity for (a) liability under ______ environmental laws or
regulations, or (b) damages (including natural resources damages) arising from
or costs incurred by such governmental entity in response to the release of a
hazardous or toxic waste, substance, pollutant, constituent, or other substance
into the environment which, if not of record in the mortgage records in the
County where such lands are located, would have priority over the Mortgage [HERE
LIST EXCEPTIONS, AS APPLICABLE].

        F. Under the laws of the State of ________________ and local
jurisdictions therein, there are no statutory and regulatory requirements
relating to the transfer of ownership or operation or sale of premises upon
which there are hazardous or toxic wastes, or upon which there are certain
facilities which indicate a likelihood of such wastes (except for various
requirements that regulatory bodies receive notification when an environmental
permittee, licensee, or notifier changes) which require (i) notification of the
State or of the local jurisdiction of such transfer, or sale, (ii) certification
that there has been no discharge of toxic or hazardous waste or other
substances, or (iii) in the event of a discharge, the assumption prior to such
transfer of ownership, or operation, or sale, of responsibility by the lender
for the undertaking of remedial measures to alleviate environmental
contamination resulting from such discharge.

        G. The Mortgage contains the terms and provisions necessary to enable
the Lender, following a default under the Mortgage, to exercise remedies which
are customarily available to mortgagees under mortgages encumbering real
property under the laws of the State of ________________.

        H. The form of financing statement described in item ___ of this opinion
("Financing Statement") is sufficient in form to perfect the security interest
in [Borrower's] [Mortgagor's] interest in the Mortgaged Property not considered
real property or fixtures, to the extent that such Mortgaged Property is deemed
to be located in the State of ________________, and a security interest in such
Mortgaged Property can be perfected by the filing of a financing statement. To
the extent that the Mortgaged Property owned by [Borrower] [Mortgagor] not
considered real property or fixtures is deemed to be located in the State of
________________ and security interests in the various types of such Mortgaged
Property described in the Financing Statement can be perfected by filing in the
State of ________________ under the provisions of Article 9 of the Uniform
Commercial Code, such security interests have been perfected by filing of the
Financing Statement in the Office of the ________________ Secretary of State.

        I. The Lender is not required, solely as a result of the transactions
contemplated by the Loan Documents, to qualify to do business in the State of


<PAGE>   160

________________ in order to exercise its rights under the Mortgage. Solely as a
result of the transactions contemplated by the Loan Documents, the Lender will
not become subject to any taxes or fees of any kind under the laws of the State
of ________________.

        J. The payment by the Borrower and receipt by the Lender of the
aggregate principal, interest and fees to be paid, and the method of calculation
and payment thereof, pursuant to the Loan Documents is not usurious under, or
otherwise in violation of, the laws of the State of ________________.

        K. Certain rights, remedies and waivers contained in the Loan Documents
which relate to the Mortgaged Property may be rendered ineffective, or limited
by applicable State of ________________ laws or judicial decisions (other than
those reflected in the qualifications and assumptions set forth herein)
governing such provisions, but in our opinion such laws and judicial decisions
do not make the Loan Documents invalid as a whole, and there exist, in the Loan
Documents or pursuant to applicable law, legally adequate remedies for a
realization of the principal benefits and/or security reasonably intended to be
provided by the Loan Documents.

        L. It is necessary that a continuation statement be filed regarding the
Financing Statement within six (6) months prior to the end of each five (5) year
period.

        M. This finding of title in the interests of [Borrower] [Mortgagor]
mortgaged in your favor is subject to all unsatisfied (in whole or in part)
Requirements of the Title Opinion, as well as all limitations, comments and
remarks set forth therein and herein.

                                                     Very truly yours,


                                                     --------------------------



<PAGE>   161


                                                                       EXHIBIT J



                                ISSUANCE REQUEST



BANK OF AMERICA, N.A.
901 Main Street, 14th Floor
Dallas, Texas  75202
Telecopy:  ____________

Attention:        [Name]
                  [Title]


                              BARGO ENERGY COMPANY


Ladies and Gentlemen:

        This Issuance Request is delivered to you pursuant to Section 4.1 of the
Second Amended and Restated Credit Agreement, dated as of September 30, 1999
(together with all amendments, if any, from time to time made thereto, the
"Credit Agreement"), between Bargo Energy Company, a Texas corporation (the
"Borrower"), certain financial institutions (the "Lenders") and BANK OF AMERICA,
N.A., a national banking association, as agent for the Lenders (the
"Administrative Agent"). Unless otherwise defined herein or the context
otherwise requires, terms used herein have the meanings provided in the Credit
Agreement.

        The Borrower hereby requests that on _________, 19__ (the "Date of
Issuance") you 3/[issue a Letter of Credit on ______________, 19__ in the
initial Stated Amount of $_______________ with a Stated Expiry Date (as defined
therein) of ______________, 19__] [extend the Stated Expiry Date (as defined
under Irrevocable Standby Letter of Credit No.__, issued on
__________________________, 19 __, in the initial Stated Amount of
$______________) to a revised Stated Expiry Date (as defined therein) of
_________________, 19__].


- ----------------------------
     3    Insert as appropriate.

<PAGE>   162


        The beneficiary of the requested Letter of Credit will be
4/_______________________________, and such Letter of Credit will be in support
of 5/________________________________.

        The Borrower hereby acknowledges that, pursuant to Section 6.3.2 of the
Credit Agreement, each of the delivery of this Issuance Request and the
[issuance][extension] of the Letter of Credit requested hereby constitutes a
representation and warranty by the Borrower that, on such date of [issuance]
[extension] all statements set forth in Section 6.3.2 are true and correct in
all material respects (unless such statements relate solely to an earlier date,
in which case such statements shall be true and correct as of such earlier
date).

        The Borrower agrees that if, prior to the time of the 6/[issuance]
[extension] of the Letter of Credit requested hereby, any matter certified to
herein by it will not be true and correct at such time as if then made, it will
immediately so notify the Administrative Agent. Except to the extent, if any,
that prior to the time of the issuance or extension requested hereby
Administrative Agent shall receive written notice to the contrary from the
Borrower, each matter certified to herein shall be deemed to be certified at the
date of such issuance or extension.

        IN WITNESS WHEREOF, the Borrower has caused this request to be executed
and delivered by its duly Authorized Officer as of __________ __, 19__.


                                        BARGO ENERGY COMPANY


                                        By
                                          -------------------------------------
                                            Name:
                                            Title:



- ---------------------

4/       Insert name and address of beneficiary.

5/       Insert description of supported Indebtedness or other obligations and
         name of agreement to which it relates.

6/       Complete as appropriate.

<PAGE>   1
                              BARGO ENERGY COMPANY

                               FIRST AMENDMENT TO
              SECOND AMENDED AND RESTATED SHAREHOLDERS' AGREEMENT

        This First Amendment ("Amendment") to the Second Amended and Restated
Shareholders' Agreement is effective for all purposes as of August 11, 1999, and
evidences the following:

        WHEREAS, B. Carl Price, Don Wm. Reynolds, Energy Capital Investment
Company PLC, an English investment company, EnCap Equity 1994 Limited
Partnership, a Texas limited partnership, BER Energy Resources, Ltd., a Texas
limited partnership (formerly Bargo Energy Resources, Ltd.), TJG Investments,
Inc., a Texas corporation, BEC Energy Company, a Texas general partnership
(formerly Bargo Energy Company), Tim J. Goff, Thomas Barrow, James E. Sowell,
BOC Operating Corporation, a Texas corporation (formerly Bargo Operating
Company, Inc.), EnCap Energy Capital Fund III-B, L.P., a Texas limited
partnership, BOCA Energy Partners, L.P., a Texas limited partnership, EnCap
Energy Fund III, L.P., a Texas limited partnership, Kayne Anderson Energy Fund,
L.P., a Delaware limited partnership, BancAmerica Capital Investors SBIC I,
L.P., a Delaware limited partnership, Eos Partners, L.P., a Delaware limited
partnership, Eos Partners SBIC, L.P., a Delaware limited partnership, Eos
Partners SBIC II, L.P., a Delaware limited partnership, and SGC Partners II LLC,
a Delaware limited partnership, entered into the Second Amended and Restated
Shareholders' Agreement, dated May 14, 1999 (the "Agreement");

        WHEREAS, the parties to the agreement desire to amend the agreement as
herein provided;

        NOW THEREFORE, the parties hereto, for good and valuable consideration,
intending to be legally bound, hereby agree as follows:

        Section 1. DEFINED TERMS. The terms capitalized herein have the meanings
given to them in the Agreement, unless otherwise defined herein.

        Section 2. BOARD OF DIRECTORS.

        (a) The first sentence of Section 2(a) is hereby replaced with the
following two sentences: "For so long as any of the Preferred Shares remain
outstanding: each of (i) EOS, (ii) Kayne and (iii) BACI (or the successor or
transferee of any such party), shall be entitled to name one (1) Designated
Nominee for Class III of the Company's Board of Directors; the Bargo Group
(including successors and transferees of its members) shall be entitled to name
two (2) Designated Nominees, and SGCP shall be entitled to name one (1)
Designated Nominee, for Class II of the Company's Board of Directors; and EnCap
(including successors and transferees of its members) shall be entitled to name
two (2) Designated Nominees for Class I of the Company's Board of Directors. In
addition, for so long as he is an employee of the Company, Jonathan M. Clarkson
shall be a Designated Nominee in Class I of the Company's Board of Directors."
<PAGE>   2

        (b) Section 2(b)(i) of the Agreement is amended to read in its entirety
as follows: "(i) to use its reasonable best efforts for so long as Jonathan M.
Clarkson is a Designated Nominee to cause Company's Board of Directors to be
composed of eight members and for so long as Mr. Clarkson is not a Designated
Nominee to cause the Company's Board of Directors to be composed of seven
members".

        Section 3. NO OTHER CHANGES. This amendment shall be incorporated into
and deemed part of the Agreement as if fully set forth therein. Except as
expressly set forth in this Amendment, all other terms and provisions of the
Agreement shall remain in full force and effect.

        IN WITNESS WHEREOF, this Amendment was executed as of the date above
first written.



                                BARGO ENERGY COMPANY


                                By:__________________________________
                                     Name:  Tim J. Goff
                                     Title: Chief Executive Officer


                                ENCAP EQUITY 1994 LIMITED PARTNERSHIP
                                By: EnCap Investments L.C., General Partner



                                By:__________________________________
                                     D. Martin Phillips
                                     Managing Director

                                       2

<PAGE>   3

                                ENERGY CAPITAL INVESTMENT COMPANY PLC



                                By:__________________________________
                                     Gary R. Petersen
                                     Director


                                TJG INVESTMENTS, INC.



                                By:__________________________________
                                     Tim J. Goff
                                     President


                                BEC ENERGY COMPANY


                                By:__________________________________
                                     Tim J. Goff
                                     Manager


                                BER ENERGY RESOURCES, LTD.
                                By: BOC Operating Corporation
                                     General Partner


                                By:__________________________________
                                     Tim J. Goff
                                     President

                                       3
<PAGE>   4

                                BOC OPERATING CORPORATION


                                By:__________________________________
                                     Tim J. Goff
                                     President


                                _____________________________________
                                Tim J. Goff

                                _____________________________________
                                Thomas Barrow

                                _____________________________________
                                James E. Sowell

                                _____________________________________
                                B. Carl Price

                                _____________________________________
                                Don Wm. Reynolds


                                ENCAP ENERGY CAPITAL FUND III, L.P.

                                By: EnCap Investments L.C., General Partner


                                By:__________________________________
                                     D. Martin Phillips
                                     Managing Director

                                       4
<PAGE>   5

                                ENCAP ENERGY CAPITAL FUND III-B, L.P.
                                By: EnCap Investments L.C., General Partner


                                By:__________________________________
                                     D. Martin Phillips
                                     Managing Director


                                BOCP ENERGY PARTNERS, L.P.
                                By: EnCap Investments L.C., Manager


                                By:__________________________________
                                     D. Martin Phillips
                                     Managing Director


                                EOS PARTNERS, L.P.


                                By:__________________________________
                                     Name:___________________________
                                     Title:__________________________


                                EOS PARTNERS SBIC, L.P.
                                By: Eos SBIC General, L.P., its general
                                       partner
                                By: Eos SBIC, Inc., its general partner


                                By:__________________________________
                                     Name:___________________________
                                     Title:__________________________


                                EOS PARTNERS SBIC II, L.P.

                                By: Eos SBIC General II, L.P., its general
                                    partner

                                By: Eos SBIC II, Inc., its general partner


                                By:__________________________________
                                     Name:___________________________
                                     Title:__________________________

                                       5
<PAGE>   6

                                SGC PARTNERS II LLC


                                By:___________________________________
                                     Name:____________________________
                                     Title:___________________________


                                BANCAMERICA CAPITAL INVESTORS SBIC I, L.P.

                                By: BancAmerica Capital Management
                                       SBIC I, LLC, its general partner

                                By: BancAmerica Capital Management I,
                                       L.P., its sole member

                                By: BACM I GP, LLC, its general partner


                                By:__________________________________
                                     J. Travis Hain
                                     Managing Director


                                KAYNE ANDERSON ENERGY FUND, L.P.


                                By:__________________________________
                                     Name:___________________________
                                     Title:__________________________

                                       6

<TABLE> <S> <C>

<ARTICLE> 5

<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                       1,146,000
<SECURITIES>                                         0
<RECEIVABLES>                                4,405,000
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                             5,551,000
<PP&E>                                      74,189,000
<DEPRECIATION>                               3,975,000
<TOTAL-ASSETS>                              78,562,000
<CURRENT-LIABILITIES>                        3,341,000
<BONDS>                                              0
                       51,935,000
                                          0
<COMMON>                                       918,000
<OTHER-SE>                                   2,170,000
<TOTAL-LIABILITY-AND-EQUITY>                78,562,000
<SALES>                                              0
<TOTAL-REVENUES>                             9,519,732
<CGS>                                                0
<TOTAL-COSTS>                                9,122,614
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                           1,630,536
<INCOME-PRETAX>                            (1,226,762)
<INCOME-TAX>                                 (417,000)
<INCOME-CONTINUING>                          (809,762)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 (809,762)
<EPS-BASIC>                                     (.039)
<EPS-DILUTED>                                   (.039)


</TABLE>


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