DENBURY RESOURCES INC
S-3/A, 1998-01-22
CRUDE PETROLEUM & NATURAL GAS
Previous: RESIDENTIAL FUNDING MORTGAGE SECURITIES II INC, 8-K, 1998-01-22
Next: EVEREN CAPITAL CORP, 8-K, 1998-01-22



<PAGE>   1
 
   
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JANUARY 22, 1998
    
 
   
                                                      REGISTRATION NO. 333-43207
    
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                               ------------------
   
                                AMENDMENT NO. 1
    
   
                                       TO
    
                                    FORM S-3
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                               ------------------
                             DENBURY RESOURCES INC.
                            DENBURY MANAGEMENT, INC.
   
            (Exact name of Registrants as specified in its charter)
    
 
<TABLE>
<C>                                <C>                                <C>
              CANADA                                                            NOT APPLICABLE
              TEXAS                               1311                            75-2294373
 (State or other jurisdiction of      (Primary standard industrial             (I.R.S. employer
  incorporation or organization)      classification code number)            identification no.)
                                                                   PHIL RYKHOEK, C.F.O.
                                                                  DENBURY RESOURCES INC.
           17304 PRESTON ROAD, SUITE 200                       17304 PRESTON ROAD, SUITE 200
                DALLAS, TEXAS 75252                                 DALLAS, TEXAS 75252
                  (972) 713-3000                         (972) 713-3000; FACSIMILE: (972) 713-3051
   (Address and telephone number of Registrants'               (Name, address and telephone
           principal executive offices)                        number of Agent for Service)
</TABLE>
 
                                   Copies to:
 
<TABLE>
<C>                                                 <C>
                 DONALD W. BRODSKY                                   STEPHEN L. BURNS
               JENKENS & GILCHRIST,                               CRAVATH, SWAINE & MOORE
            A PROFESSIONAL CORPORATION                                WORLDWIDE PLAZA
            1100 LOUISIANA, SUITE 1800                               825 EIGHTH AVENUE
                 HOUSTON, TX 77002                                  NEW YORK, NY 10019
     (713) 951-3300; FACSIMILE: (713) 951-3314           (212) 474-1000; FACSIMILE: (212) 474-3700
</TABLE>
 
    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after this Registration Statement becomes effective.
 
    If the only securities being registered on this form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box: [ ]
 
    If any of the securities being registered on this form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933 other than securities offered only in connection with dividend or
reinvestment plans, check the following box: [ ]
 
    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement of the same offering. [ ]
 
    If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]
 
    If delivery of the Prospectus is expected to be made pursuant to Rule 434,
please check the following box: [ ]
 
                        CALCULATION OF REGISTRATION FEE
 
   
<TABLE>
<CAPTION>
=================================================================================================================================
                                                                   PROPOSED MAXIMUM     PROPOSED MAXIMUM
         TITLE OF EACH CLASS OF                  AMOUNT                OFFERING             AGGREGATE            AMOUNT OF
      SECURITIES TO BE REGISTERED           TO BE REGISTERED      PRICE PER SECURITY    OFFERING PRICE(A)     REGISTRATION FEE
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                      <C>                    <C>                    <C>                 <C>
Common Shares...........................      5,565,140(b)            $17.969(c)          $100,000,000            $29,500
  % Senior Subordinated Notes Due
  2008..................................      $125,000,000               100%             $125,000,000            $36,875
Guarantee(d)............................          (e)                    (e)                   (e)                 (d)(e)
- ------------------------------------------------------------------------------------------------------------------------------
          Total.........................           --                     --              $225,000,000           $66,375(f)
==============================================================================================================================
</TABLE>
    
 
(a) Estimated solely for purposes of calculating the registration fee.
(b) Includes an aggregate of 725,888 Common Shares subject to an Underwriters'
    over-allotment option, and Common Shares to be sold directly by Denbury
    Resources Inc. to its majority shareholder.
(c) Calculated by averaging the high ($18.0625) and low ($17.875) price of the
    Common Shares of Denbury Resources Inc. on December 23, 1997 on the New York
    Stock Exchange pursuant to Rule 457(c) under the Securities Act of 1933, as
    amended.
(d) The Guarantee of the Senior Subordinated Notes by Denbury Resources Inc. is
    also being registered hereby. Pursuant to Rule 457(n) under the Securities
    Act of 1933, as amended, no registration fee is required with respect to the
    Guarantee.
(e) No separate consideration will be received for the Guarantee from the
    purchasers of the Notes.
   
(f) The Registrants have previously paid a filing fee of $59,000.
    
 
   
     THE REGISTRANTS HEREBY AMEND THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANTS
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.
    
================================================================================
<PAGE>   2
 
                                EXPLANATORY NOTE
 
   
     This Registration Statement contains alternate sections, paragraphs,
sentences or phrases which will be contained in two forms of Prospectus covered
by this Registration Statement, one to be used in connection with the offering
(the "Equity Offering") of Common Shares by Denbury Resources Inc. (the "Equity
Prospectus") and the other to be used in connection with the concurrent offering
(the "Debt Offering") of      % Senior Subordinated Notes Due 2008 by Denbury
Management, Inc., the wholly owned subsidiary of Denbury Resources Inc. (the
"Debt Prospectus"). Those sections, paragraphs, sentences or phrases that will
appear only in the Equity Prospectus are marked at the beginning of such
section, paragraph, sentence or phrase by the symbol [E] and those appearing
only in the Debt Prospectus are designated by the symbol [D]. Unless so
indicated with a [D] or [E], the language therein will appear in both forms of
Prospectus. The closing of the Debt Offering is conditioned upon the closing of
the Equity Offering and the TPG Purchase; however, the closing of the Equity
Offering is not conditioned upon the closing of the Debt Offering. Denbury
Management, Inc. is a Registrant with respect to the debt securities only.
Denbury Resources Inc. is a Registrant with respect to both the equity and debt
securities.
    
<PAGE>   3
 
INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A
REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
 
[D] PROSPECTUS (Subject to Completion)
   
Issued January 21, 1998
    
 
   
                                  $125,000,000
    
 
                                    DRI LOGO
 
                            Denbury Management, Inc.
                       % SENIOR SUBORDINATED NOTES DUE 2008
 
     Fully and Unconditionally Guaranteed on a Senior Subordinated Basis by
 
                             Denbury Resources Inc.
                            ------------------------
 
                   Interest payable           and
                            ------------------------
   
Interest on the   % Senior Subordinated Notes Due 2008 (the "Notes") of Denbury
Management, Inc. ("DMI") will be payable semi-annually on         and         of
 each year, commencing           , 1998. The Notes are redeemable at the option
  of DMI, in whole or in part, on or after           , 2003, at the redemption
 prices set forth herein, together with accrued and unpaid interest, if any, to
the date of redemption. In addition, at any time prior to           , 2001, DMI
 may redeem in the aggregate up to 35% of the original principal amount of the
 Notes with the proceeds of one or more Stock Offerings (as defined herein), at
   % of their principal amount, plus accrued interest. Upon a Change of Control
(as defined herein), each holder of the Notes may require DMI to purchase all or
   a portion of such holder's Notes at 101% of the aggregate principal amount
   thereof, together with accrued and unpaid interest, if any, to the date of
                   purchase. See "Description of the Notes."
    
   
   Concurrently with the offering made hereby (the "Debt Offering"), Denbury
   Resources Inc., DMI's parent company ("DRI"), is offering 4,557,200 of its
 Common Shares (the "Equity Offering" and, together with the Debt Offering, the
    "Offerings") pursuant to a simultaneous underwritten public offering. In
 addition, in connection with the Equity Offering, entities affiliated with the
 Texas Pacific Group, DRI's largest shareholder, will purchase from DRI 290,000
    Common Shares (the "TPG Purchase"). The closing of the Debt Offering is
 conditioned upon the consummation of the Equity Offering and the TPG Purchase.
    
   
The Notes will be general unsecured obligations of DMI, subordinated in right of
 payment to all existing and future Senior Indebtedness (as defined herein) of
  DMI, but senior in right of payment to all existing and future subordinated
indebtedness of DMI. As of September 30, 1997, after giving pro forma effect to
 the Transactions (as defined herein), DMI and its subsidiaries would have had
 $17.0 million of Senior Indebtedness outstanding under the Credit Facility (as
 defined herein) and $148.0 million available under the Credit Facility which,
when borrowed, will constitute Senior Indebtedness. The Notes will be fully and
       unconditionally guaranteed on a senior subordinated basis by DRI.
    
                            ------------------------
 
  SEE "RISK FACTORS" BEGINNING ON PAGE    FOR A DISCUSSION OF INFORMATION THAT
                 SHOULD BE CONSIDERED BY PROSPECTIVE INVESTORS.
                            ------------------------
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
    EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
       SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
         COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
            PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
               CRIMINAL OFFENSE.
                            ------------------------
 
                       PRICE       % AND ACCRUED INTEREST
                            ------------------------
 
<TABLE>
<CAPTION>
                                                                                  UNDERWRITING
                                                          PRICE TO               DISCOUNTS AND              PROCEEDS TO
                                                         PUBLIC(1)               COMMISSIONS(2)            COMPANY(1)(3)
                                                         ---------               --------------            -------------
<S>                                                <C>                       <C>                       <C>
Per Note.......................................              %                         %                         %
Total..........................................              $                         $                         $
</TABLE>
 
- ------------
 
    (1) Plus accrued interest from           , 1998, if any.
    (2) DMI has agreed to indemnify the Underwriters against certain
        liabilities, including liabilities under the Securities Act of 1933, as
        amended. See "Underwriters."
   
    (3) Before deducting expenses, estimated at $600,000.
    
                            ------------------------
 
    The Notes are offered, subject to prior sale, when, as and if accepted by
the Underwriters named herein and subject to approval of certain legal matters
by Cravath, Swaine & Moore, counsel for the Underwriters. It is expected that
delivery of the Notes will be made on or about           , 1998 at the office of
Morgan Stanley & Co. Incorporated, New York, N.Y., against payment therefor in
immediately available funds.
                            ------------------------
 
                              MORGAN STANLEY DEAN WITTER  NATIONSBANC MONTGOMERY
   
                                                        SECURITIES LLC
    
 
   
February   , 1998
    
<PAGE>   4
 
INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A
REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
 
[E] PROSPECTUS (Subject to Completion)
   
Issued January 21, 1998
    
 
   
                                4,557,200 Shares
    
 
                                    DRI LOGO
 
                             Denbury Resources Inc.
                                 COMMON SHARES
                            ------------------------
   
All of the Common Shares offered hereby are being sold by Denbury Resources Inc.
 The Common Shares are listed on the New York Stock Exchange and on The Toronto
 Stock Exchange under the symbol "DNR." On January 20, 1997, the reported last
 sale price of the Common Shares on the New York Stock Exchange and The Toronto
  Stock Exchange was US$18.125 per share and C$25.40 per share, respectively.
    
   
  Concurrently with the closing of this offering of Common Shares (the "Equity
   Offering"), entities affiliated with the Texas Pacific Group ("TPG"), the
  Company's largest shareholder, will purchase from the Company 290,000 Common
 Shares (the "TPG Purchase") at $       per share (equal to the price to public
  per share set forth below less underwriting discounts and commissions). The
 closing of the Equity Offering and the TPG Purchase are each conditioned upon
                           the closing of the other.
    
   
Concurrently with the Equity Offering, Denbury Management, Inc.("DMI"), a wholly
owned subsidiary of the Company, is offering $125 million in aggregate principal
 amount of      % Senior Subordinated Notes Due 2008 (the "Debt Offering" and,
 together with the Equity Offering, the "Offerings"). The closing of the Equity
 Offering is not conditioned upon the closing of the Debt Offering. The Common
        Shares offered hereby are also being offered for sale in Canada.
    
                            ------------------------
 
   SEE "RISK FACTORS" BEGINNING ON PAGE     FOR  INFORMATION  THAT SHOULD  BE
                     CONSIDERED  BY  PROSPECTIVE  INVESTORS.
                            ------------------------
  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
   AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.
                            ------------------------
 
                           PRICE $            A SHARE
                            ------------------------
 
<TABLE>
<CAPTION>
                                                                UNDERWRITING
                                        PRICE TO               DISCOUNTS AND              PROCEEDS TO
                                         PUBLIC                COMMISSIONS(1)              COMPANY(2)
                                        --------               --------------             -----------
<S>                              <C>                       <C>                       <C>
Per Share....................              $                         $                         $
Total(3).....................              $                         $                         $
</TABLE>
 
- ------------
 
    (1) The Company has agreed to indemnify the Underwriters against certain
        liabilities, including liabilities under the Securities Act of 1933, as
        amended. See "Underwriters."
   
    (2) Before deducting expenses, estimated at $600,000.
    
   
    (3) The Company has granted to the Underwriters an option, exercisable
        within 30 days of the date hereof, to purchase up to an aggregate of
        683,580 additional Common Shares at the price to public less
        underwriting discounts and commissions, for the purpose of covering
        over-allotments, if any. If the Underwriters exercise such option in
        full, the total price to public, underwriting discounts and commissions
        and proceeds to the Company will be $        , $        and $        ,
        respectively. See "Underwriters."
    
                            ------------------------
 
     The Common Shares are offered, subject to prior sale, when, as and if
accepted by the Underwriters named herein and subject to approval of certain
legal matters by Cravath, Swaine & Moore, counsel for the Underwriters. It is
expected that delivery of the Common Shares will be made on or about
  , 1998 at the office of Morgan Stanley & Co. Incorporated, New York, N.Y.,
against payment therefor in immediately available funds.
                            ------------------------
 
MORGAN STANLEY DEAN WITTER
       GORDON CAPITAL, INC.
              JOHNSON RICE & COMPANY L.L.C.
                     LOEWEN, ONDAATJE, MCCUTCHEON USA LIMITED
   
February   , 1998
    
<PAGE>   5
 
                              CORE OPERATING AREAS
 
      This page will contain a map of the Gulf Coast Region depicting the
   
          geographical location of the Company's eight largest fields.
    
 
                             ---------------------
 
     CERTAIN PERSONS PARTICIPATING IN THIS OFFERING MAY ENGAGE IN TRANSACTIONS
THAT STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE PRICE [[D] OF THE NOTES] [[E]
OF THE COMMON SHARES]. SPECIFICALLY, THE UNDERWRITERS MAY OVER-ALLOT IN
CONNECTION WITH THIS OFFERING AND MAY BID FOR AND PURCHASE [[D] THE NOTES] [[E]
THE COMMON SHARES] IN THE OPEN MARKET. FOR A DESCRIPTION OF THESE ACTIVITIES,
SEE "UNDERWRITERS."
 
[E] IN CONNECTION WITH THIS OFFERING, CERTAIN UNDERWRITERS AND SELLING GROUP
MEMBERS MAY ENGAGE IN PASSIVE MARKET MAKING TRANSACTIONS IN THE COMMON SHARES ON
THE NEW YORK STOCK EXCHANGE AND THE TORONTO STOCK EXCHANGE IN ACCORDANCE WITH
REGULATION M OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. SEE
"UNDERWRITERS."
 
                                        2
<PAGE>   6
 
   
     NO DEALER, SALESMAN, OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS
PROSPECTUS AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT
BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY OR ANY OF THE
UNDERWRITERS. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR A
SOLICITATION OF AN OFFER TO BUY ANY OF THE SECURITIES OFFERED BY THIS PROSPECTUS
BY ANYONE IN ANY JURISDICTION IN WHICH SUCH OFFER OR SOLICITATION IS NOT
AUTHORIZED, OR IN WHICH THE PERSON MAKING THE OFFER OR SOLICITATION IS NOT
QUALIFIED TO DO SO OR TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER OR
SOLICITATION. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY DISTRIBUTION OF
SECURITIES MADE HEREUNDER OR THEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE
AN IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF THE COMPANY SINCE
THE DATE HEREOF OR THEREOF OR THAT THE INFORMATION CONTAINED IN THIS PROSPECTUS
IS CORRECT AS OF ANY TIME SUBSEQUENT TO THE DATE HEREOF.
    
                             ---------------------
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                        PAGE
                                        ----
<S>                                     <C>
Information Incorporated by
  Reference...........................    3
Prospectus Summary....................    5
Risk Factors..........................   14
Forward-Looking Statements............   21
[D] Equity Offering...................   21
[E] Debt Offering.....................   21
Use of Proceeds.......................   22
[E] Price Range of Common Shares......   23
[E] Dividend Policy...................   23
Capitalization........................   24
Unaudited Pro Forma Consolidated
  Financial Information...............   25
Selected Consolidated Financial
  Data................................   30
Management's Discussion and Analysis
  of Financial Condition and Results
  of Operations.......................   31
Business and Properties...............   39
Management............................   55
Principal Shareholders................   58
Interests of Management in Certain
  Transactions........................   60
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                        PAGE
                                        ----
<S>                                     <C>
[E] Description of Capital Stock......   61
Description of Certain Indebtedness...   62
[D] Description of the Notes..........   64
[D] Certain U.S. Federal Income Tax
  Considerations......................   96
[E] Canadian Taxation and the
  Investment Canada Act...............   98
Service and Enforcement of Legal
  Process.............................  100
[E] Shares Eligible for Future Sale...  100
[E] Underwriters......................  101
[D] Underwriters......................  102
[E] Legal Matters.....................  103
[D] Legal Matters.....................  103
Experts...............................  103
Available Information.................  104
Glossary..............................  105
Index to Consolidated Financial
  Statements..........................  F-1
Summary Reserve Report................  A-1
</TABLE>
    
 
                     INFORMATION INCORPORATED BY REFERENCE
 
   
     The following documents of the Company which have been previously filed
with the Securities and Exchange Commission (the "Commission") are incorporated
in this Prospectus: (i) Annual Report on Form 10-K for the year ended December
31, 1996; (ii) Quarterly Reports on Form 10-Q for the quarters ended March 31,
1997, June 30, 1997 and September 30, 1997; (iii) proxy statement dated May 21,
1997; (iv) reports on Form 8-K dated September 12, 1997, December 8, 1997,
December 16, 1997, and January 20, 1998.
    
 
     All documents filed by the Company pursuant to Section 13(a), 13(c), 14 and
15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"),
subsequent to the date of this Prospectus and prior to the termination of the
offering of securities to be made hereunder shall be deemed to be incorporated
herein by reference and made a part hereof from the date of filing of such
documents.
 
     Any statement contained herein or in a document incorporated or deemed to
be incorporated by reference herein shall be deemed to be modified or superseded
for purposes of this Prospectus to the extent that a statement contained herein,
therein or in any other subsequently filed document that also is or is deemed to
be incorporated by reference herein modifies or supersedes such statement. Any
statement so modified or superseded shall not be deemed, except as so modified
or superseded, to constitute a part of this Prospectus.
 
                                        3
<PAGE>   7
 
     Any person receiving a copy of this Prospectus may obtain from the Company
without charge a copy of any and all documents or part thereof incorporated
herein by reference (other than exhibits and schedules to such documents unless
such exhibits or schedules are specifically incorporated by reference into the
information the Prospectus incorporates), upon written or oral request. Requests
should be directed to Phil Rykhoek, Chief Financial Officer and Corporate
Secretary, Denbury Resources Inc., 17304 Preston Road, Suite 200, Dallas, Texas,
75252, telephone: (972) 713-3000.
 
                                        4
<PAGE>   8
 
                               PROSPECTUS SUMMARY
 
   
     The following summary is qualified in its entirety by reference to, and
should be read in conjunction with, the more detailed information and
Consolidated Financial Statements included elsewhere in this Prospectus. All
dollar amounts in this Prospectus, unless otherwise indicated, are expressed in
United States dollars and all financial data is presented in accordance with
Canadian generally accepted accounting principles. The December 31, 1997
estimated proved reserve data included throughout this Prospectus have been
prepared by Netherland, Sewell & Associates, Inc. ("Netherland & Sewell"),
independent petroleum engineers. Unless the context otherwise requires, the
terms "Denbury" and the "Company" refer to Denbury Resources Inc., a Canadian
corporation, and its wholly owned subsidiaries, the term "DRI" refers to Denbury
Resources Inc. only, the term "DMI" refers to the wholly owned subsidiary of
DRI, Denbury Management, Inc., a Texas corporation. The term "Transactions"
refers collectively to (i) the Chevron Acquisition (as defined herein) and (ii)
the Offerings and the TPG Purchase and the application of the estimated net
proceeds therefrom. Certain information contained in this summary and elsewhere
in this Prospectus, including information with respect to the Company's plans
and strategy for its business, are forward-looking statements. Prospective
investors should carefully consider the information set forth under "Risk
Factors" for a discussion of important factors that could cause actual results
to differ materially from the forward-looking statements contained in this
Prospectus. Certain oil and gas industry terms used herein are defined in the
Glossary included elsewhere in this Prospectus. [E] Unless otherwise indicated
herein, the information contained in this Prospectus assumes that the
Underwriters' over-allotment option will not be exercised.
    
 
                                  THE COMPANY
 
OVERVIEW
 
   
     Denbury is an independent energy company engaged in acquisition,
development and exploration activities in the U.S. Gulf Coast region, primarily
onshore in Louisiana and Mississippi. The Company believes the Gulf Coast
represents one of the most attractive regions in North America given the
region's prolific production history, complex geology (with multiple producing
horizons) and the opportunities that have been created by advanced technologies
such as 3-D seismic and various drilling, completion and recovery techniques. As
of December 31, 1997, the Company had proved reserves of 52.0 MMBbls and 77.2
Bcf or 64.9 MMBOE, including 27.6 MMBOE attributable to the Chevron Acquisition.
At such date, the PV10 Value of these reserves was $361.3 million, of which
$276.5 million was attributable to proved developed reserves. Denbury operates
wells comprising approximately 83% of its PV10 Value. The eight largest fields
in which the Company has an interest constitute approximately 82% of its
estimated proved reserves and, within these eight fields, Denbury owns an
average working interest of 91%.
    
 
   
     Over the last four years, the Company has achieved rapid growth in proved
reserves, production and cash flow by concentrating on the acquisition of
properties which it believes have significant upside potential and through the
efficient development, enhancement and operation of its properties. For the
four-year period ended December 31, 1997, the Company increased its proved
reserves at a compound annual growth rate of 83%, from 5.8 MMBOE to 64.9 MMBOE.
Over the four-year period ended December 31, 1996, the Company also increased
its average net daily production at a compound annual growth rate of 90%, from
1,193 BOE/d to 8,167 BOE/d, with a further increase to 14,195 BOE/d for the
third quarter of 1997. For the same four-year period, EBITDA increased at a
compound annual growth rate of 126%, from $3.0 million to $34.9 million. EBITDA
for the twelve months ended September 30, 1997 was $51.9 million.
    
 
   
     Since 1993, when the Company began to focus its operations exclusively in
the United States, through December 31, 1995, the Company spent a total of $43.4
million on acquisitions. In May 1996, the Company acquired properties in its
core areas of Mississippi and Louisiana from Amerada Hess Corporation ("Amerada
Hess") for approximately $37.2 million (the "Hess Acquisition"). As of June 30,
1996, these acquired properties were producing approximately 2,945 BOE/d and had
proved reserves of approximately 5.9 MMBOE. Since that date, the Company's
extensive development and exploitation on these properties has resulted in an
82% increase in their production to 5,373 BOE/d for the third quarter of 1997
and a 141% increase in their proved reserves to 14.2 MMBOE as of December 31,
1997.
    
 
                                        5
<PAGE>   9
 
   
     On December 30, 1997, the Company acquired oil properties in the Heidelberg
Field, which is adjacent to the Company's other primary oil properties in
Mississippi, from Chevron U.S.A. Inc. ("Chevron") for approximately $202.0
million (the "Chevron Acquisition"). These properties are located approximately
nine miles from the Eucutta Field, the property with the highest PV10 Value of
those acquired by the Company in the Hess Acquisition. The estimated proved
reserves as of December 31, 1997 for the Chevron Acquisition properties are
approximately 27.6 MMBOE (43% of the Company's total proved reserves at December
31,1997), with average net daily production of approximately 2,940 BOE/d for the
third quarter of 1997. As a result of the significant amount of future
development and exploitation to be performed on these properties and the
increase in future reserves and production that the Company expects to result
from such development and exploitation, the Company has attributed approximately
$75.0 million of the purchase price to unevaluated properties. The Company
believes that the properties acquired in the Chevron Acquisition provide
exploitation opportunities similar to those of the Mississippi properties
acquired in the Hess Acquisition. The Company's estimated 1998 development
budget for the Heidelberg Field is approximately $30.0 million. See
"-- Acquisition of Chevron Properties."
    
 
BUSINESS STRATEGY
 
   
     The Company seeks to: (i) achieve attractive returns on capital through
prudent acquisitions, development and exploratory drilling and efficient
operations; (ii) maintain a conservative balance sheet to preserve maximum
financial and operational flexibility; and (iii) create strong employee
incentives through equity ownership. The Company believes that its growth to
date in proved reserves, production and cash flow is a direct result of its
adherence to the following fundamental principles which are at the core of the
Company's long-term growth strategy:
    
 
     REGIONAL FOCUS. The Company intends to continue the regional focus of its
operations. By focusing its efforts in the Gulf Coast region, primarily
Louisiana and Mississippi, the Company has been able to accumulate substantial
geological and reservoir data and operating experience which it believes
provides it with significant competitive advantages. For example, the Company
believes it is better able to identify, evaluate and negotiate potential
acquisitions, and develop and operate its properties in an efficient and low-
cost manner. The Company believes the Gulf Coast represents one of the most
attractive regions in North America given the region's prolific production
history, complex geology (with multiple producing horizons) and the
opportunities that have been created by advanced technologies such as 3-D
seismic and various drilling, completion and recovery techniques. Moreover,
because of the region's proximity to major pipeline networks serving important
northeastern U.S. markets, the Company typically realizes natural gas prices in
excess of those realized in many other producing regions.
 
     DISCIPLINED ACQUISITION STRATEGY. The Company intends to continue to
acquire properties where it believes significant additional value can be
created. Such properties are typically characterized by: (i) long production
histories; (ii) complex geological formations with multiple producing horizons
and substantial exploitation potential; (iii) a history of limited operational
focus and capital investment, often due to their relatively small size and
limited strategic importance to the previous owner; and (iv) the potential for
the Company to gain control of operations. The Company believes that due to
continuing rationalization of properties, primarily by major integrated and
independent energy companies, future acquisition opportunities should continue
to be available. In addition, the Company seeks to maintain a well-balanced
portfolio of oil and natural gas development, exploitation and exploration
projects in order to minimize the overall risk profile of its investment
opportunities while still providing significant upside potential. The recent
Hess and Chevron Acquisitions are examples of the types of opportunities the
Company seeks.
 
   
     OPERATION OF HIGH WORKING INTEREST PROPERTIES. The Company intends to
continue to acquire working interest positions that give it operational control
or that the Company believes may lead to operational control. As the operator of
properties comprising approximately 83% of its total PV10 Value, the Company
believes it is better able to manage and monitor production and more effectively
control expenses, the allocation of capital and the timing of field development.
Once a property is acquired, the Company employs its technical and operational
expertise to fully evaluate a field's future potential. If favorable, it will
consolidate its working interest positions, primarily through negotiated
transactions, which tend to be attractively priced compared to
    
 
                                        6
<PAGE>   10
 
acquisitions available in competitive situations. The consolidation of ownership
allows the Company to: (i) enhance the effectiveness of its technical staff by
concentrating on relatively few wells; (ii) increase production while adding
virtually no additional personnel; and (iii) increase ownership in a property so
that the potential benefits of value enhancement activities justify the
allocation of Company resources.
 
     EXPLOITATION OF PROPERTIES. The Company intends to maximize the value of
its properties through a combination of increasing production, increasing
recoverable reserves or reducing operating costs. During 1997, the Company's
primary methodology for achieving these objectives was the use of horizontal
drilling, which it also intends to emphasize in 1998. Horizontal drilling has
historically produced oil at faster rates and with lower operating costs on a
BOE basis than traditional vertical drilling. The Company also utilizes a
variety of other techniques to maximize property values, including: (i)
undertaking surface improvements such as rationalizing, upgrading or redesigning
production facilities; (ii) making downhole improvements such as resizing
downhole pumps or reperforating existing production zones; (iii) reworking
existing wells into new production zones with additional potential; and (iv)
utilizing exploratory drilling, which is frequently based on various advanced
technologies such as 3-D seismic.
 
   
     EXPERIENCED AND INCENTIVIZED PERSONNEL. The Company intends to maintain a
highly competitive team of experienced and technically proficient employees and
motivate them through a positive work environment and stock ownership in the
Company. The Company's 29 geological and engineering professionals have an
average of over 15 years of experience in the Gulf Coast region. The Company
believes that employee ownership, which is encouraged through the Company's
stock option and stock purchase plans, is essential for attracting, retaining
and motivating quality personnel. As of January 1, 1998, approximately 86% of
the Company's employees were participating in the Company's stock purchase plan.
The Company believes that all employees are important to the success of the
Company and as such grants bonuses and stock options to both management and
employees on a basis roughly proportional to salaries.
    
 
ACQUISITION OF CHEVRON PROPERTIES
 
   
     On December 30, 1997, the Company acquired oil properties in the Heidelberg
Field, Jasper County, Mississippi, from Chevron for approximately $202.0
million. The Chevron Acquisition represents the largest acquisition by the
Company to date. The Heidelberg Field is adjacent to the Company's other primary
oil properties in Mississippi and includes 122 producing wells, 96 of which the
Company will operate. The Company purchased an average working interest of 94%
and an average net revenue interest of 81% in these 96 wells, which wells
account for approximately 99% of the field's average net daily production. The
average net daily production from these properties during the third quarter of
1997 was approximately 2,840 Bbls/d and 600 Mcf/d.
    
 
   
     The Chevron Acquisition added proved reserves as of December 31, 1997 of
approximately 27.2 MMBbls and 2.5 Bcf, or approximately 27.6 MMBOE. As a result
of the significant amount of future development and exploitation to be performed
on these properties and the increase in future reserves and production that the
Company expects to result from such development and exploitation, the Company
has attributed approximately $75 million of the purchase price to unevaluated
properties.
    
 
   
     The Company has identified several potential development projects during
its initial evaluation of the Heidelberg Field. These include initiating a
waterflood project, upgrading lift capacity in over 15 wells and recompleting 30
wells in new zones. In addition, the Company has identified over 40 potential
drilling locations in addition to other potential secondary and tertiary
recovery projects. Horizontal wells drilled by the Company in 1997 at nearby
Davis, Quitman and Eucutta Fields improved daily production rates significantly
as compared to vertical wells drilled in the same fields. Consequently, the
Company anticipates that 30 of the 40 proposed future wells in the Heidelberg
Field will be horizontal wells. The Company's total 1998 development budget for
the Heidelberg Field is approximately $30.0 million.
    
 
TPG PURCHASE
 
   
     In December 1995, the Texas Pacific Group initially invested in the Company
through a $40.0 million private placement of securities followed by a $9.6
million purchase of Common Shares in October 1996. TPG
    
 
                                        7
<PAGE>   11
 
   
currently owns approximately 40% of the outstanding Common Shares. In connection
with the Offerings, TPG is purchasing an additional 290,000 Common Shares (the
"TPG Purchase"). See "Interests of Management in Certain Transactions." After
giving effect to the Equity Offering and the TPG Purchase, TPG will own
approximately 34% of the outstanding Common Shares.
    
 
   
     TPG was founded by David Bonderman, James G. Coulter and William S. Price
III in 1993 to pursue private and public investment opportunities. The
principals of TPG operate limited partnerships with committed capital of over
$3.2 billion. TPG has several investments in its portfolio, including America
West Airlines, Beringer Wine Estates, Belden & Blake Corporation, Continental
Airlines, Del Monte Foods, Ducati Motor, Favorite Brands International, J. Crew
Group Inc., Paradyne, St. Joe Communications and Virgin Cinemas.
    
 
                             [D] THE DEBT OFFERING
 
Issuer.....................  Denbury Management, Inc.
 
   
Guarantors.................  Denbury Resources Inc. and, under certain
                             circumstances, certain subsidiaries of DMI.
    
 
   
Securities Offered.........  $125,000,000 aggregate principal amount of     %
                             Senior Subordinated Notes Due 2008.
    
 
Maturity Date..............              , 2008.
 
Interest Rate and Payment
Dates......................  The Notes will bear interest at a rate of     % per
                             annum. Interest on the Notes will accrue from the
                             date of issuance thereof and will be payable
                             semi-annually on           and           of each
                             year, commencing             , 1998.
 
   
Optional Redemption........  Except as set forth below, the Notes will not be
                             redeemable at the option of DMI prior to
                               , 2003. Thereafter, the Notes will be redeemable
                             at the option of DMI, in whole or in part, at the
                             redemption prices set forth herein, together with
                             accrued and unpaid interest, if any, to the date of
                             redemption. If at any time or from time to time
                             before             , 2001, DRI consummates a Stock
                             Offering following which there is a Public Market
                             (as defined herein), DMI may, at its option, use
                             all or a portion of the proceeds therefrom to
                             redeem up to 35% of the original principal amount
                             of the Notes at a redemption price equal to     %
                             of the aggregate principal amount thereof, together
                             with accrued and unpaid interest, if any, to the
                             date of redemption; provided, however, that (i) at
                             least $81.0 million in aggregate principal amount
                             of Notes remains outstanding immediately after each
                             such redemption or such redemption retires the
                             Notes in their entirety and (ii) such redemption
                             occurs within 60 days following the closing of such
                             Stock Offering. See "Description of the
                             Notes -- Optional Redemption."
    
 
Repurchase Obligation upon
  Change of Control........  Upon the occurrence of a Change of Control, each
                             holder of Notes will have the right to require DMI
                             to purchase all or a portion of such holder's Notes
                             at a price equal to 101% of the aggregate principal
                             amount thereof, together with accrued and unpaid
                             interest to the date of purchase. See "Risk
                             Factors -- Risks Relating to a Change of Control"
                             and "Description of the Notes -- Certain
                             Covenants -- Change of Control."
 
                                        8
<PAGE>   12
 
   
Ranking....................  The Notes will be unsecured, general obligations of
                             DMI subordinated in right of payment to all
                             existing and future Senior Indebtedness of DMI. The
                             Notes will rank pari passu in right of payment with
                             any future senior subordinated indebtedness of DMI
                             and will be senior in right of payment to all
                             existing and future subordinated indebtedness of
                             DMI. As of September 30, 1997, after giving pro
                             forma effect to the Transactions, DMI would have
                             had approximately $17.0 million of outstanding
                             Senior Indebtedness and no outstanding subordinated
                             indebtedness. The Company may incur additional
                             indebtedness under the Credit Facility after the
                             Offerings, and such indebtedness will constitute
                             Senior Indebtedness. See "Risk
                             Factors -- Subordination of the Notes and
                             Guaranties" and "Description of the
                             Notes -- Ranking."
    
 
   
Guaranties.................  The Notes will be fully and unconditionally
                             guaranteed on a senior subordinated basis by DRI,
                             of which DMI is a direct wholly owned subsidiary.
                             The DRI Guaranty (as defined herein) will be a
                             general, unsecured obligation of DRI, subordinated
                             in right of payment to all existing and future
                             Senior Indebtedness of DRI. As of September 30,
                             1997, after giving pro forma effect to the
                             Transactions, DRI would have had $17.0 million of
                             Senior Indebtedness outstanding, all of which would
                             have represented its guarantee of Senior
                             Indebtedness of DMI under the Credit Facility. In
                             addition, in certain circumstances, the Notes will
                             in the future be fully and unconditionally
                             guaranteed on a senior subordinated basis by
                             certain subsidiaries of DMI. See "Risk Factors --
                             Subordination of the Notes and Guaranties,"
                             "Description of the Notes -- Ranking" and
                             "-- Future Subsidiary Guarantors."
    
 
Certain Covenants..........  The indenture pursuant to which the Notes will be
                             issued (the "Indenture") will contain certain
                             covenants for the benefit of the holders,
                             including, among others, covenants limiting the
                             incurrence of additional indebtedness, the payment
                             of dividends, the redemption of capital stock, the
                             making of certain investments, the incurrence of
                             dividend and other payment restrictions affecting
                             subsidiaries, the issuance of capital stock of
                             subsidiaries, asset sales, the creation of liens,
                             certain sale and leaseback transactions,
                             transactions with affiliates and certain mergers
                             and consolidations. However, these limitations will
                             be subject to a number of important qualifications
                             and exceptions. See "Description of the
                             Notes -- Certain Covenants."
 
Use of Proceeds............  The net proceeds from the Debt Offering, together
                             with the net proceeds from the Equity Offering and
                             the TPG Purchase, will be used to reduce the
                             Company's outstanding indebtedness under the Credit
                             Facility, incurred primarily in connection with the
                             Chevron Acquisition. Following such repayment, the
                             Company will continue to have borrowing
                             availability under the Credit Facility to fund
                             future acquisitions, development activities and
                             working capital. See "Use of Proceeds."
 
   
Concurrent Equity
Offering...................  Concurrently with the Debt Offering, DRI is
                             offering 4,557,200 (5,240,780 if the underwriters'
                             over-allotment option is exercised in full) of its
                             Common Shares, no par value (the "Common Shares"),
                             by a separate prospectus. The closing of the Debt
                             Offering is conditioned on the concurrent closing
                             of the Equity Offering and the TPG Purchase;
                             however, the closing of the Equity Offering is not
                             conditioned on the closing of the Debt Offering.
    
 
                                        9
<PAGE>   13
 
                            [E] THE EQUITY OFFERING
 
   
Common Shares offered
  by DRI...................  4,557,200 shares(a)
    
 
   
Common Shares to be
  outstanding after the
  Equity Offering..........  25,861,883 shares(b)
    
 
   
Concurrent Debt Offering...  Concurrently with the Equity Offering, DMI is
                             offering $125.0 million aggregate principal amount
                             of its     % Senior Subordinated Notes Due 2008 by
                             a separate prospectus. The closing of the Equity
                             Offering is not conditioned on the closing of the
                             Debt Offering.
    
 
Use of Proceeds............  The net proceeds from the Equity Offering, together
                             with the net proceeds from the Debt Offering and
                             the TPG Purchase, will be used to reduce the
                             Company's outstanding indebtedness under the Credit
                             Facility incurred primarily in connection with the
                             Chevron Acquisition. Following such repayment, the
                             Company will continue to have borrowing
                             availability under the Credit Facility to fund
                             future acquisitions, development activities and
                             working capital. See "Use of Proceeds."
 
New York Stock Exchange and
  The Toronto Stock
  Exchange symbol..........  DNR
- ---------------
 
   
(a) Excludes 290,000 Common Shares to be purchased by TPG in the TPG Purchase.
    
 
   
(b) Includes (i) 20,389,683 Common Shares outstanding as of January 15, 1998,
    (ii) 290,000 Common Shares to be purchased by TPG in the TPG Purchase and
    (iii) 625,000 Common Shares issued upon the exercise of warrants held by TPG
    at $7.40 per share on January 20, 1998. This total does not include
    2,028,876 shares issuable pursuant to outstanding warrants and stock
    options, of which 466,872 were exercisable as of January 15, 1998.
    
 
                                  RISK FACTORS
 
     Prior to making an investment decision, prospective investors should
consider carefully, together with other information contained in this
Prospectus, the risk factors discussed under the caption "Risk Factors" herein.
 
                                       10
<PAGE>   14
 
          SUMMARY HISTORICAL AND PRO FORMA CONSOLIDATED FINANCIAL DATA
 
   
     The summary historical consolidated financial data of the Company set forth
below as of and for the years ended December 31, 1994, 1995 and 1996 have been
derived from the audited consolidated financial statements of the Company. The
summary historical consolidated financial data for the nine-month periods ended
September 30, 1996 and 1997, and as of September 30, 1997, have been derived
from unaudited consolidated financial statements of the Company which, in
management's opinion include all adjustments (consisting of only normal
recurring adjustments) necessary to present fairly the results for such periods.
The operating results for such periods are not necessarily indicative of the
operating results to be expected for a full fiscal year. The summary unaudited
pro forma consolidated financial data for the Company set forth below have been
derived from the Pro Forma Financial Statements (as defined herein) included
elsewhere in this Prospectus. The summary historical and pro forma consolidated
financial data are qualified in their entirety by, and should be read in
conjunction with, "Unaudited Pro Forma Consolidated Financial Information,"
"Management's Discussion and Analysis of Financial Condition and Results of
Operations" and the Company's consolidated financial statements included
elsewhere in this Prospectus (the "Consolidated Financial Statements").
    
 
   
<TABLE>
<CAPTION>
                                                                                  NINE MONTHS ENDED
                                           YEAR ENDED DECEMBER 31,                  SEPTEMBER 30,
                                    --------------------------------------   ----------------------------
                                                                    PRO                            PRO
                                                                   FORMA                          FORMA
                                     1994      1995      1996     1996(A)     1996      1997     1997(A)
                                    -------   -------   -------   --------   -------   -------   --------
                                             (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS AND RATIOS)
<S>                                 <C>       <C>       <C>       <C>        <C>       <C>       <C>
INCOME STATEMENT DATA:
  Revenue:
    Oil, natural gas and related
      product sales...............  $12,692   $20,032   $52,880   $ 76,542   $34,709   $60,083   $ 74,117
    Interest income...............       23        77       769        769       425       986        986
                                    -------   -------   -------   --------   -------   -------   --------
         Total revenues...........   12,715    20,109    53,649     77,311    35,134    61,069     75,103
                                    -------   -------   -------   --------   -------   -------   --------
  Expenses:
    Production....................    4,309     6,789    13,495     20,145     9,197    15,737     20,974
    General and administrative....    1,105     1,832     4,267      4,954     2,825     4,535      5,049
    Interest......................    1,146     2,085     1,993     12,642     1,530       387      8,363
    Imputed preferred dividends...       --        --     1,281      1,281     1,153        --         --
    Loss on early extinguishment
      of debt.....................       --       200       440        440       440        --         --
    Depletion and depreciation....    4,209     8,022    17,904     24,601    12,557    23,224     27,166
    Franchise taxes...............       65       100       213        213       160       308        308
                                    -------   -------   -------   --------   -------   -------   --------
         Total expenses...........   10,834    19,028    39,593     64,276    27,862    44,191     61,860
                                    -------   -------   -------   --------   -------   -------   --------
  Income before income taxes......    1,881     1,081    14,056     13,035     7,272    16,878     13,243
  Provision for federal income
    taxes.........................     (718)     (367)   (5,312)    (4,934)   (2,932)   (6,245)    (4,900)
                                    -------   -------   -------   --------   -------   -------   --------
  Net income......................  $ 1,163   $   714   $ 8,744   $  8,101   $ 4,340   $10,633   $  8,343
                                    =======   =======   =======   ========   =======   =======   ========
  Net income per common share
    Primary.......................  $  0.19   $  0.10   $  0.67   $   0.45   $  0.37   $  0.53   $   0.33
    Fully diluted.................     0.19      0.10      0.62       0.44      0.36      0.50       0.33
  Weighted average common shares
    outstanding...................    6,240     6,870    13,104     17,951    11,616    20,175     25,022
OTHER FINANCIAL DATA:
  Operating cash flow(b)..........  $ 6,185   $ 9,394   $34,140   $ 39,816   $21,767   $40,166   $ 40,473
  Capital expenditures............   16,903    28,524    86,857    288,857    73,320    70,773    272,773
  EBITDA(c).......................    7,213    11,311    34,905     51,230    22,527    39,503     47,786
SELECTED RATIOS:
  Ratio of earnings to fixed
    charges(d)....................      2.6x      1.5x      4.4x       1.9x      3.1x     34.9x       2.6x
  Ratio of EBITDA to interest
    expense.......................      6.3       5.4      17.5        4.1      14.7     102.1        5.7
  Ratio of long-term debt to
    EBITDA........................      2.3       0.3       0.1        2.4       1.6(e)     0.4(e)      2.2(e)
</TABLE>
    
 
                                       11
<PAGE>   15
 
   
<TABLE>
<CAPTION>
                                                                                     AS OF SEPTEMBER 30,
                                                                                            1997
                                                           AS OF DECEMBER 31,        -------------------
                                                      ----------------------------                PRO
                                                       1994      1995       1996      ACTUAL    FORMA(A)
                                                      -------   -------   --------   --------   --------
                                                                        (IN THOUSANDS)
<S>                                                   <C>       <C>       <C>        <C>        <C>
BALANCE SHEET DATA:
  Working capital (deficit).........................  $(1,620)  $ 6,862   $ 12,482   $  2,899   $  2,899
  Total assets......................................   48,964    77,641    166,505    210,424    415,549
  Long-term debt, net of current maturities.........   16,536     3,474        125     20,005    142,049
  Convertible preferred stock.......................       --    15,000         --         --         --
  Shareholders' equity..............................   25,962    53,501    142,504    155,558    238,639
</TABLE>
    
 
- ---------------
 
   
(a) Gives effect to the Transactions as if the Transactions had been consummated
    as of the beginning of the period presented. See "Unaudited Pro Forma
    Consolidated Financial Information."
    
 
(b) Represents cash flow provided by operations, exclusive of the net change in
    non-cash working capital balances.
 
(c) EBITDA represents earnings before interest income, interest expense, income
    taxes, depletion and depreciation, imputed preferred dividends and losses on
    early extinguishment of debt. The Company has included information
    concerning EBITDA because it believes that EBITDA is used by certain
    investors as one measure of an issuer's historical ability to service its
    debt. EBITDA is not a measurement determined in accordance with generally
    accepted accounting principles and should not be considered in isolation or
    as a substitute for measures of performance prepared in accordance with
    generally accepted accounting principles.
 
(d) For purposes of determining the ratio of earnings to fixed charges, earnings
    are defined as earnings from continuing operations before income taxes, plus
    fixed charges. Fixed charges consist of interest expense, amortization of
    debt expense, and imputed preferred stock dividends.
 
(e) EBITDA used to calculate the ratio of long-term debt to EBITDA for these
    periods has been annualized.
 
                                       12
<PAGE>   16
 
                    SUMMARY OIL AND NATURAL GAS RESERVE DATA
 
     The following table summarizes the estimates of the Company's net proved
oil and natural gas reserves as of the dates indicated and the present value
attributable to the reserves at such dates. The proved reserve and present value
data as of December 31, 1995, 1996 and 1997 have been prepared by Netherland &
Sewell, independent petroleum engineers. A summary of the Netherland & Sewell
report as of December 31, 1997 is included as Annex A to this Prospectus. See
"Risk Factors -- Uncertainty of Estimates of Oil and Natural Gas Reserves,"
"Business and Properties -- Oil and Natural Gas Operations," and Note 11 to the
Consolidated Financial Statements.
 
   
<TABLE>
<CAPTION>
                                                                    AS OF DECEMBER 31,
                                                              -------------------------------
                                                               1995        1996        1997
                                                              -------    --------    --------
<S>                                                           <C>        <C>         <C>
PROVED RESERVES:
  Oil (MBbls)...............................................    6,292      15,052      52,018
  Natural Gas (MMcf)........................................   48,116      74,102      77,191
  Oil Equivalent (MBOE).....................................   14,311      27,403      64,883
  Proved developed as a percent of total proved reserves....       78%         84%         66%
PRESENT VALUES:
  PV10 Value (before income taxes, in thousands)............  $96,965    $316,098(d) $361,329(e)
  Standardized measure of discounted estimated future net
    cash flow after net
    income taxes (in thousands).............................   81,164     241,872     336,755
REPRESENTATIVE OIL AND GAS PRICES:(a)
  West Texas Intermediate (per Bbl).........................  $ 18.00    $  23.39    $  16.18
  NYMEX Henry Hub (per MMBtu)...............................     2.24        3.90        2.58
OTHER RESERVE DATA:
  Reserve replacement percent(b)............................      300%        500%        844%
  Reserve to production ratio (years)(c)....................      9.3         9.2        10.9(f)
</TABLE>
    
 
- ---------------
 
(a) The oil prices as of each respective year-end were based on West Texas
    Intermediate ("WTI") posted prices per barrel and NYMEX Henry Hub ("NYMEX")
    prices per MMBtu, with these representative prices adjusted by field to
    arrive at the appropriate corporate net price.
 
(b) Equals current period reserve additions through acquisition of reserves,
    extensions and discoveries, and revisions of prior estimates divided by the
    production for such period.
 
(c) Calculated by dividing year-end proved reserves by such year's annual
    production.
 
(d) For comparative purposes, the Company also prepared a reserve report as of
    December 31, 1996 using a 1996 WTI price of $21.00 per Bbl and a NYMEX price
    of $2.40 per MMBtu, with these prices also adjusted by field. The PV10 Value
    in this report was $213.7 million with 27.0 MMBOE of proved reserves. For
    the nine months ended September 30, 1997, the average WTI price was
    approximately $18.90 per Bbl and the average NYMEX price was approximately
    $2.39 per MMBtu.
 
   
(e) For comparative purposes, the Company also prepared a reserve report as of
    December 31, 1997 using the prices used in the December 31, 1996 reserve
    report. The PV10 Value in this report was $633.4 million with 67.8 MMBOE of
    proved reserves. Of this PV10 Value, $206.7 million was attributable to the
    Chevron Acquisition, as opposed to a PV10 Value of $109.4 million using
    December 31, 1997 prices.
    
 
   
(f) Calculated by dividing year-end proved reserves by the pro forma annualized
    production for the nine months ended September 30, 1997.
    
 
                             SUMMARY OPERATING DATA
 
     The following table sets forth summary data with respect to the production
and sales of oil and natural gas by the Company for the periods indicated.
 
   
<TABLE>
<CAPTION>
                                                                                             NINE MONTHS ENDED
                                                     YEAR ENDED DECEMBER 31,                   SEPTEMBER 30,
                                              --------------------------------------   -----------------------------
                                                                           PRO FORMA                       PRO FORMA
                                               1994     1995      1996      1996(A)     1996      1997      1997(A)
                                              ------   -------   -------   ---------   -------   -------   ---------
<S>                                           <C>      <C>       <C>       <C>         <C>       <C>       <C>
AVERAGE NET DAILY PRODUCTION VOLUMES:
  Oil (Bbls)................................   1,340     1,995     4,099      7,520      3,529     7,615     10,522
  Natural gas (Mcf).........................   9,113    13,271    24,406     25,076     23,867    34,061     34,648
  Oil equivalent (BOE) .....................   2,859     4,207     8,167     11,699      7,507    13,292     16,297
WEIGHTED AVERAGE SALES PRICES:
  Oil (per Bbl).............................  $13.84   $ 14.90   $ 18.98    $ 18.75    $ 18.05   $ 17.53    $ 17.45
  Natural gas (per Mcf).....................    1.78      1.90      2.73       2.72       2.64      2.54       2.54
PER BOE DATA:
  Revenue...................................  $12.17   $ 13.05   $ 17.69    $ 17.88    $ 16.87   $ 16.56    $ 16.65
  Production expenses.......................   (4.13)    (4.42)    (4.51)     (4.70)     (4.47)    (4.34)     (4.71)
                                              ------   -------   -------    -------    -------   -------    -------
  Production netback........................    8.04      8.63     13.18      13.18      12.40     12.22      11.94
  General and administrative................   (1.12)    (1.25)    (1.50)     (1.21)     (1.45)    (1.33)     (1.20)
  Interest, net.............................   (0.99)    (1.26)    (0.26)     (2.67)     (0.37)     0.18      (1.64)
                                              ------   -------   -------    -------    -------   -------    -------
  Operating cash flow(b)....................  $ 5.93   $  6.12   $ 11.42    $  9.30    $ 10.58   $ 11.07    $  9.10
                                              ======   =======   =======    =======    =======   =======    =======
</TABLE>
    
 
- ---------------
 
(a) Adjusted to give effect to the Transactions as if the Transactions had been
    completed as of the beginning of the periods presented.
 
(b) Represents cash flow provided by operations, exclusive of the net change in
    non-cash working capital balances.
 
                                       13
<PAGE>   17
 
                                  RISK FACTORS
 
     Prospective purchasers of the securities offered hereby should carefully
consider the following factors in addition to the other information in this
Prospectus. See "Forward-Looking Statements."
 
SUBSTANTIAL CAPITAL REQUIREMENTS
 
   
     In the future, the Company will require additional funds to develop,
maintain and acquire additional interests in existing or newly acquired
properties. During the last three years, the Company's total capital
expenditures, including acquisitions, have averaged significantly more than its
cash flow from operations. The Company made capital expenditures of $28.5
million, $86.9 million and $272.8 million in the years ended December 31, 1995
and 1996, and the nine-month period ended September 30, 1997 (including the pro
forma effect of the Chevron Acquisition), respectively. Historically, the
Company has funded these expenditures principally through internally-generated
cash flows, bank debt and the issuance of equity. The Company intends to use the
net proceeds from the Offerings and the TPG Purchase to substantially reduce its
outstanding bank debt. As of September 30, 1997, after giving pro forma effect
to the Transactions, the Company would have had $148.0 million ($130.0 million
as of December 31, 1997) available under its Credit Facility. See "Use of
Proceeds." The borrowing base on the Credit Facility will be redetermined semi-
annually by the lenders thereunder in their sole discretion and there can be no
assurance that the borrowing base will be maintained at its present level. If
the Company's borrowing base under the Credit Facility is decreased, the
Company's ability to obtain the funds necessary to carry out its business
strategy may be limited. See "Management's Discussion and Analysis of Financial
Condition and Results of Operations -- Restated Credit Facility" and
"Description of Certain Indebtedness."
    
 
     Although the Company carefully monitors its capital requirements and plans
its expenditures accordingly, and believes that it will be able to meet all of
its obligations in the future, there can be no assurance that additional capital
will always be available to the Company in the future or that it will be
available on terms that are acceptable to the Company. Numerous factors affect
the cost and availability of capital, including market conditions, the Company's
results of operations and the rate of the Company's drilling successes. Should
outside capital resources be limited, the rate of the Company's growth would
substantially decline, and there can also be no assurance that the Company would
be able to continue to increase its oil and natural gas production or reserves.
 
PRICE FLUCTUATIONS AND MARKETS
 
   
     The Company's revenue, profitability and future rate of growth are
dependent upon the price of, and demand for, oil, natural gas and natural gas
liquids. Historically, the markets for oil and natural gas have been volatile
and are likely to continue to be volatile in the future. The prices for oil and
natural gas are subject to wide fluctuations in response to relatively minor
changes in the supply of and demand for oil and natural gas, market uncertainty
and a variety of additional factors that are beyond the control of the Company.
These factors include the level of consumer product demand, weather conditions,
domestic and foreign governmental relations, governmental regulations and taxes,
the price and availability of alternative fuels, political conditions in the
Middle East and other petroleum producing areas, the foreign supply of oil and
natural gas, the price of foreign imports and overall economic conditions. These
factors and the volatility of the energy markets make it extremely difficult to
predict future oil and natural gas price movements with any certainty. Declines
in oil and natural gas prices would not only reduce revenue, but could reduce
the amount of oil and natural gas that can be produced economically by the
Company and, as a result, could have a material adverse effect on the Company's
financial condition, results of operations and reserves. In an effort to
minimize the effect of price volatility, the Company has from time to time
entered into hedging arrangements. The Company currently does not have any
financial hedging contracts in place, although it may enter into such contracts
in the future.
    
 
     The availability of a ready market for the Company's oil and natural gas
production also depends on a number of factors, including the demand for and
supply of oil and natural gas and the proximity of reserves to, and the capacity
of, oil and natural gas gathering systems, pipelines or trucking and terminal
facilities. Wells may be temporarily shut-in for lack of a market, or due to the
inadequacy or unavailability of pipeline or
 
                                       14
<PAGE>   18
 
gathering system capacity. If any of these market factors were to dramatically
change, the impact on the Company's financial condition would be substantial.
 
ACQUISITION RISKS
 
     The Company's rapid growth in recent years has been attributable in
significant part to acquisitions of producing properties. After the consummation
of the Offerings, the Company expects to continue to evaluate and, where
appropriate, pursue acquisition opportunities. There can be no assurance that
suitable acquisition opportunities will be identified in the future, or that
they will be integrated successfully into the Company's operations or be
successful in achieving desired profitability objectives. In addition, the
Company competes against other companies for acquisitions, and there can be no
assurance that the Company will be successful in the acquisition of any material
property interests.
 
     The successful acquisition of producing properties requires an assessment
of recoverable reserves, exploration potential, future oil and natural gas
prices, operating costs, potential environmental and other liabilities and other
factors beyond the Company's control. In connection with such an assessment, the
Company performs a review of the subject properties that it believes to be
generally consistent with industry practices. Nonetheless, the resulting
assessments are necessarily inexact and their accuracy inherently uncertain, and
such a review may not accurately assess a property's value or reveal all
existing or potential problems, nor will it necessarily permit a buyer to become
sufficiently familiar with the property to fully assess its merits and
deficiencies. Inspections may not always be performed on every platform or well,
and structural and environmental problems are not necessarily observable even
when an inspection is undertaken.
 
     Additionally, significant acquisitions can change the nature of the
operations and business of the Company depending upon the character of the
acquired properties, which may have substantially different operating and
geological characteristics or geographic location than existing properties.
While it is the Company's current intention to continue to concentrate on
acquiring producing properties with development and exploration potential
located in the Gulf Coast region, there can be no assurance that the Company
will not pursue acquisitions or properties located in other geographic regions.
To the extent that such acquired properties are substantially different than the
Company's Gulf Coast properties, the Company's ability to efficiently realize
the economic benefits of such transactions may be limited.
 
DRILLING AND OPERATING RISKS
 
     Drilling activities are subject to many risks, including the risk that no
commercially productive reservoirs will be discovered. There can be no assurance
that new wells drilled by the Company will be productive or that the Company
will recover all or any portion of its investment in such wells. Drilling for
oil and natural gas may involve unprofitable efforts, not only from dry wells
but also from wells that are productive but do not produce sufficient net
revenues to return a profit after deducting drilling, operating and other costs.
The cost of drilling, completing and operating wells is often uncertain. The
Company's drilling operations may be curtailed, delayed or canceled as a result
of numerous factors, many of which are beyond the Company's control, including
title problems, weather conditions, compliance with governmental requirements
and shortages or delays in the delivery of equipment and services.
 
     The Company's operations are subject to all of the risks normally incident
to the operation and development of oil and natural gas properties and the
drilling of oil and natural gas wells, including encountering unexpected
formations or pressures, blow-outs, the release of contaminants into the
environment, cratering and fires, all of which could result in personal
injuries, loss of life, pollution damage, damage to property of the Company and
others, including the inability to control such risk when wells are being
drilled by third party contractors and the imposition of fines and penalties
pursuant to environmental legislation. See "-- Governmental and Environmental
Regulation" and "Business and Properties -- Legal Proceedings." The Company is
not fully insured against all of these risks, nor are all such risks insurable.
Although the Company maintains liability insurance in an amount which it
considers adequate, the nature of these risks is such that liabilities could
exceed policy limits, or, as in the case of environmental fines and penalties,
be uninsurable, in which event the Company could incur significant costs that
could have a material adverse effect upon its
 
                                       15
<PAGE>   19
 
financial condition. The Company believes that it has proper procedures in place
and that its operating staff carries out their work in a manner designed to
mitigate these risks. There can be no assurance, however, that such procedures
will be effective in deterring these costs.
 
   
     The Company has focused its oil and natural gas operations in certain key
areas and currently receives approximately 80% of its production from 11 fields.
Any interruption of operations in these key areas could materially adversely
affect the profitability of the Company. In the majority of the Company's
Mississippi fields, significant amounts of saltwater are produced which require
disposal. Currently, the Company is able to dispose of such saltwater
economically, but should it be unable to do so in the future, production from
these fields would become uneconomical.
    
 
NEED TO REPLACE RESERVES
 
   
     The Company's future success depends on its ability to find, develop or
acquire additional oil and natural gas reserves that are recoverable on an
attractive economic basis. Unless the Company successfully replaces the reserves
that it produces (through development, exploration or acquisitions), the
Company's proved reserves will decline. Furthermore, approximately 21% of the
Company's proved developed reserves at December 31, 1997 are located in the
lower Gulf Coast geosyncline in southern Louisiana, which is characterized by
relatively rapid decline rates. Approximately 60% of the Company's total proved
reserves at December 31, 1997 were either proved undeveloped or proved developed
non-producing. Recovery of such reserves will require significant capital
expenditures and successful drilling operations. There can be no assurance that
the Company will continue to be successful in its effort to develop or replace
its proved reserves on terms economically beneficial to the Company, if at all.
    
 
UNCERTAINTY OF ESTIMATES OF OIL AND NATURAL GAS RESERVES
 
     Estimates of the Company's proved developed oil and natural gas reserves
and future net revenues therefrom appearing elsewhere herein are based on
reserve reports prepared by independent petroleum engineers. There are numerous
uncertainties inherent in estimating the quantity of proved reserves, including
many factors which are beyond the Company's control. The estimates contained in
this Prospectus are based on several assumptions, all of which are speculative
to a certain degree. Actual future production, revenues, taxes, operating
expenses, development expenditures and quantities of recoverable oil and natural
gas reserves could vary substantially from those assumed in the estimates and
any significant variance in these assumptions could materially affect the
estimated quantity of reserves. The estimation of reserves requires substantial
judgment on the part of the petroleum engineers, resulting in imprecise
determinations, particularly with respect to new discoveries. Different reserve
engineers may make different estimates of reserve quantities and revenues
attributable thereto based on the same data. The accuracy of any reserve
estimate depends on the quality of available data, as well as engineering and
geological interpretation and judgment. The Company's reserves are primarily
water-drive reservoirs which can increase the uncertainty of the estimates that
have been prepared. Results of drilling, testing and production or price changes
subsequent to the date of the estimate may result in revisions to such
estimates. The estimates of future net revenues reflect oil and natural gas
prices as of the date of estimation, without escalation. There can be no
assurance, however, that such prices will be realized or that the estimated
production volumes will be produced during the periods indicated. Future
performance that deviates significantly from that found in the reserve reports
could have a material adverse effect on the Company.
 
EFFECTS OF LEVERAGE AND RESTRICTIVE DEBT COVENANTS
 
   
     As of September 30, 1997, after giving pro forma effect to the
Transactions, the Company would have had total consolidated indebtedness of
approximately $142.0 million and a debt-to-capitalization ratio of 37.3%. In
addition, the Company may incur additional indebtedness in the future under the
Credit Facility in connection with its acquisition, development, exploitation
and exploration of oil and natural gas producing properties. As of September 30,
1997, after giving pro forma effect to the Transactions, the Company would have
had $148.0 million ($130.0 million as of December 31, 1997) of availability
under the Credit Facility.
    
 
                                       16
<PAGE>   20
 
   
     The degree to which the Company will be leveraged following the
Transactions could have important consequences to holders of the [D] Notes [E]
Common Shares, including but not limited to, the following: (i) a substantial
portion of the Company's cash flow from operations will be dedicated to debt
service and will not be available for other purposes; (ii) the Company's ability
to obtain additional financing in the future could be limited; (iii) certain of
the Company's borrowings are at variable rates of interest, which could result
in higher interest expense in the event of increases in interest rates; (iv) the
Company may be more vulnerable to downturns in its business or in the general
economy and may be restricted from making acquisitions, introducing new
technologies or exploiting business opportunities; and (v) the Indenture and the
Credit Agreement (as defined herein) contain financial and restrictive covenants
that limit the ability of the Company to, among other things, borrow additional
funds, dispose of assets or pay cash dividends. Failure by the Company to comply
with such covenants could result in an event of default under such debt
instruments which, if not cured or waived, could have a material adverse effect
on the Company. [D] In addition, the degree to which the Company is leveraged
could prevent it from purchasing all Notes tendered to it upon the occurrence of
a Change of Control, which would constitute an event of default under the
Indenture. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations -- Restated Credit Facility"[[D],] [[E] and] "Description
of Certain Indebtedness" [[D]] and "Description of the Notes."]
    
 
   
     If the Company is unable to generate sufficient cash flow or otherwise
obtain funds necessary to make required payments on its indebtedness or, if the
Company otherwise fails to comply with the various covenants in such
indebtedness (including covenants in the Credit Facility), it would be in
default under the terms thereof, which would permit the holders of such
indebtedness to accelerate the maturity of such indebtedness and could cause
defaults under other indebtedness of the Company, including the Notes, or result
in its bankruptcy. [D] Such defaults or any bankruptcy of the Company resulting
therefrom could result in a default on the Notes and could delay or preclude
payment of principal of, or interest on, the Notes. [[D] See "-- Subordination
of the Notes and Guaranties]." The ability of the Company to meet its
obligations will be dependent upon the future performance of the Company, which
will be subject to prevailing economic conditions and to financial, business and
other factors, including factors beyond the control of the Company.
    
 
   
[D] SUBORDINATION OF THE NOTES AND GUARANTIES
    
 
   
     The indebtedness evidenced by the Notes and the DRI Guaranty will be senior
subordinated obligations of DMI and DRI, respectively. The payment of the
principal of, premium (if any), and interest on the Notes and the payment of the
DRI Guaranty are each subordinate in right of payment, as set forth in the
Indenture, to the prior payment in full of all Senior Indebtedness of DMI or
DRI, as the case may be, including the obligations of DMI under, and DRI's
guarantee of DMI's obligations with respect to, the Credit Facility. Any future
Subsidiary Guaranty (as defined herein) will be similarly subordinated to Senior
Indebtedness of such Subsidiary Guarantor (as defined herein).
    
 
   
     As of September 30, 1997, after giving pro forma effect to the
Transactions, (i) the Senior Indebtedness of DMI would have been approximately
$17.0 million, all of which would have been secured and (ii) the Senior
Indebtedness of DRI would have been approximately $17.0 million, all of which
would have represented guarantees of Senior Indebtedness of DMI under the Credit
Facility. Although the Indenture contains limitations on the amount of
additional indebtedness that DMI may incur, under certain circumstances the
amount of such indebtedness could be substantial and, in any case, such
indebtedness may be Senior Indebtedness. See "Description of the
Notes -- Certain Covenants -- Limitation on Indebtedness." As of September 30,
1997, after giving pro forma effect to the Transactions, including the
anticipated repayment of borrowings under the Credit Facility, approximately
$148.0 million ($130.0 million as of December 31, 1997) of additional borrowings
would have been available under the Credit Facility for general corporate
purposes, which amounts will constitute Senior Indebtedness of DMI and DRI if
and when incurred.
    
 
   
     In the event of the bankruptcy, liquidation or reorganization of DMI, DRI
or any Subsidiary Guarantor, the assets of DMI, DRI or such Subsidiary
Guarantor, as the case may be, will be available to pay the Notes or such
Guaranty (as defined herein) only after all Senior Indebtedness of DMI, DRI or
such Subsidiary Guarantor, as the case may be, has been paid in full. Sufficient
funds may not exist to pay amounts due on the Notes in such event. In addition,
the subordination provisions of the Indenture provide that no payment (other
    
                                       17
<PAGE>   21
 
   
than certain non-cash payments) may be made with respect to the Notes during the
continuance of a payment default under certain Senior Indebtedness. Furthermore,
if certain non-payment defaults exist with respect to certain Senior
Indebtedness of DMI, the holders of such Senior Indebtedness will be able to
prevent payments on the Notes for certain periods of time. See "Description of
the Notes -- Ranking."
    
 
CONTROLLING SHAREHOLDER
 
   
     In December 1995, the Company completed a $40.0 million private placement
of securities to TPG consisting of Convertible Preferred (as defined herein),
Common Shares and warrants to purchase Common Shares. After giving pro forma
effect to the Equity Offering and the TPG Purchase, TPG will own approximately
34% of the Common Shares outstanding. TPG is entitled to nominate a minimum of
three of the seven members of the Company's Board of Directors so long as TPG
maintains certain ownership levels. In addition, certain transactions, including
changes to the number of board members, amendments to the Company's Articles of
Continuance, certain issuances of debt, certain acquisitions and dispositions,
and most issuances of equity, require the two-thirds majority of the Board of
Directors, which cannot be obtained without the approval of at least one TPG
nominee. Additionally, so long as TPG's equity interest is 20% or greater, it
has the right (which has been partially waived for the Equity Offering), but not
the obligation, to maintain its pro rata ownership interest in the equity
securities of the Company in the event the Company issues any additional equity
securities or securities convertible into Common Shares by purchasing additional
securities on the same terms and conditions. At the request of the New York
Stock Exchange, the Company has agreed to make the extension of this right
subject to shareholder ratification every five years with the first vote on the
matter expected to be at the Company's annual meeting in the year 2000. See
"Interests of Management in Certain Transactions."
    
 
DEPENDENCE ON KEY PERSONNEL
 
     The Company believes that its continued success will depend to a
significant extent upon the abilities and continued efforts of its Board of
Directors and its senior management, particularly Gareth Roberts, its Chief
Executive Officer and President. The Company does not have any employment
agreements and does not maintain any key man life insurance policies. The loss
of the services of any of its key personnel could have a material adverse effect
on the Company's results of operations. The success of the Company will also
depend, in part, upon the Company's ability to find, hire and retain additional
key management personnel who are also being sought by other businesses. The
inability to find, hire and retain such personnel could have a material adverse
effect upon the Company's results of operations. See "Management."
 
[D] RISKS RELATING TO A CHANGE OF CONTROL
 
     Upon a Change of Control, holders of the Notes will have the right to
require the Company to purchase all or any part of such holders' Notes at a
price equal to 101% of the principal amount thereof, plus accrued and unpaid
interest, if any, to the date of purchase. The events that constitute a Change
of Control under the Indenture would constitute a default under the Credit
Agreement, which prohibits the purchase of the Notes by the Company in the event
of certain Change of Control events unless and until such time as the Company's
indebtedness under the Credit Facility is repaid in full. There can be no
assurance that the Company and the Guarantor would have sufficient financial
resources available to satisfy all of its or their obligations under the Credit
Facility and the Notes in the event of a Change of Control. The Company's
failure to purchase the Notes would result in a default under the Indenture and
under the Credit Agreement, each of which could have material adverse
consequences for the Company and the holders of the Notes. See "Description of
Certain Indebtedness" and "Description of the Notes -- Change of Control."
 
[E] SHARES ELIGIBLE FOR FUTURE SALE
 
   
     As of December 31, 1997, after giving pro forma effect to the Equity
Offering and the TPG Purchase, the Company would have had 25,233,883 Common
Shares outstanding (25,917,463 Common Shares assuming exercise of the
Underwriters' over-allotment option in full). The Common Shares sold in the
Equity Offering will be freely tradeable without restrictions or further
registration under the Securities Act of 1933, as
    
                                       18
<PAGE>   22
 
   
amended (the "Securities Act"). All of the Common Shares beneficially owned by
TPG as of the close of the Equity Offering and the TPG Purchase will be
"restricted" securities within the meaning of the Securities Act as a result of
TPG being deemed an "affiliate" of the Company under such act. The Company
believes that such "restricted" Common Shares are eligible for sale on the open
market pursuant to Rule 144 under the Securities Act from time to time. In
connection with the Equity Offering and the TPG Purchase, the Company, all of
its directors and executive officers and TPG have agreed not to sell or
otherwise dispose of any Common Shares, including any securities exercisable for
or convertible into Common Shares, for a period of 120 days from the date of
this Prospectus, without the prior written consent of Morgan Stanley & Co.
Incorporated. See "Underwriters."
    
 
     In addition, the Company has granted certain registration rights to TPG.
Until December 21, 2000, TPG has the right, subject to certain conditions, to
demand that its Common Shares be registered under the Securities Act on one
occasion. See "Interests of Management in Certain Transactions" and "Shares
Eligible for Future Sale."
 
     The sale of a substantial number of Common Shares or the availability of a
substantial number of shares for sale may adversely affect the market price of
the Common Shares and could impair the Company's ability to raise additional
capital through the sale of its equity securities.
 
COMPETITION
 
     The Company operates in a highly competitive industry. The Company competes
with a large number of integrated and independent energy companies for the
acquisition of desirable oil and natural gas properties, as well as for the
equipment and labor required to develop and operate such properties. Many of
these competitors have financial and other resources substantially greater than
those of the Company. See "Business and Properties -- Competition."
 
     The principal resources necessary for the exploration for, and the
acquisition, exploitation, production and sale of, oil and natural gas are
leaseholds under which oil and natural gas reserves may be discovered, drilling
rigs and related equipment to explore for and develop such reserves, capital
assets required for the exploitation and production of the reserves and
knowledgeable personnel to conduct all phases of oil and natural gas operations.
The Company must compete for such resources with major oil companies and
independent operators and also with other industries for certain personnel and
materials. Although the Company believes its current resources are adequate to
preclude any significant disruption of operations in the immediate future, the
continued availability of such materials and resources to the Company cannot be
assured.
 
GOVERNMENTAL AND ENVIRONMENTAL REGULATION
 
     The production of oil and natural gas is subject to regulation under a wide
range of United States federal and state statutes, rules, orders and
regulations. Federal and state statutes and regulations require permits for
drilling, reworking and recompletion operations, drilling bonds and reports
concerning operations, and these permits are subject to modification, renewal
and revocation by the issuing governmental authority. Most states in which the
Company owns and operates properties have regulations governing conservation
matters, including provisions for the unitization or pooling of oil and natural
gas properties, the establishment of maximum rates of production from oil and
natural gas wells and the regulation of the spacing, plugging and abandonment of
wells. Many states also restrict production to the market demand for oil and
natural gas, and several states have indicated interest in revising applicable
regulations in light of the persistent oversupply and low prices for oil and
natural gas production. These regulations may limit the rate at which oil and
natural gas could otherwise be produced from the Company's properties. Some
states have also enacted statutes prescribing ceiling prices for natural gas
sold within the state. See "Business and Properties -- Regulations."
 
     Various federal, state and local laws and regulations relating to the
protection of the environment may affect the Company's operations and costs. In
particular, the Company's production operations, its salt water disposal
operations and its use of facilities for treating, processing or otherwise
handling hydrocarbons and wastes therefrom are subject to stringent
environmental regulation. The majority of the Company's Louisiana activity is
conducted in a marsh environment where environmental regulations are somewhat
greater.
                                       19
<PAGE>   23
 
Although compliance with these regulations increases the cost of Company
operations, such compliance has not had a material effect on the Company's
capital expenditures, earnings or competitive position. There can be no
assurance, however, that future compliance with these regulations will not have
such a material adverse effect. Environmental regulations have historically been
subject to frequent change by regulatory authorities, and the Company is unable
to predict the ongoing cost of complying with these laws and regulations or the
future impact of such regulations on its operations. There can be no assurance
that present or future regulation will not adversely affect the Company's
exploration, development and production of its oil and natural gas producing
properties. A significant discharge of hydrocarbons into the environment could,
to the extent such event is not insured, subject the Company to substantial
expense. See "Business and Properties -- Regulations."
 
[E] AUTHORIZATION AND DISCRETIONARY ISSUANCE OF PREFERRED SHARES; ANTI-TAKEOVER
PROVISIONS
 
     DRI's Articles of Continuance authorize the future issuance of an unlimited
number of First Preferred Shares and Second Preferred Shares (collectively, the
"Preferred Shares"), with such designations, rights, privileges, restrictions
and conditions as may be determined from time to time by the Board of Directors.
Accordingly, the Board of Directors is empowered, without shareholder approval,
to issue Preferred Shares with dividend, liquidation, conversion, voting or
other rights that could adversely affect the voting power or other rights of
holders of the Common Shares. The issuance of the Preferred Shares could be
utilized, under certain circumstances, as a method of discouraging, delaying or
preventing a change in control of the Company. Such actions could have the
effect of discouraging bids for the Company, thereby preventing shareholders
from receiving the maximum value for their shares. Although the Company has no
present intention to issue any additional Preferred Shares, there can be no
assurance that the Company will not do so in the future. After giving effect to
the Offerings, no Preferred Shares will be outstanding. See "Interests of
Management in Certain Transactions."
 
   
     The Investment Canada Act includes provisions that are intended to
encourage persons considering unsolicited tender offers or other unilateral
takeover proposals to negotiate with DRI's Board of Directors rather than pursue
non-negotiated takeover attempts. These provisions apply to DRI and may have a
significant effect on the ability of a shareholder to benefit from certain kinds
of transactions that may be opposed by the incumbent Board of Directors. See
"Description of Capital Stock" and "Canadian Taxation and the Investment Canada
Act."
    
 
[E] ABSENCE OF DIVIDENDS
 
     During the last five fiscal years, the Company has not paid any dividends
on its outstanding Common Shares, and the Company does not intend to pay any
dividends in the foreseeable future. DRI is a holding company with no
independent operations. Accordingly, any amounts available for dividends will be
dependent on the prior declaration of dividends by DMI to DRI. In addition, the
terms of the Credit Facility restrict, and the terms of the Notes will restrict,
the payment of dividends by DMI. The Company currently intends to retain its
cash for the continued expansion of its business, including exploration,
development and acquisition activities.
 
[D] ABSENCE OF A PUBLIC MARKET FOR THE NOTES
 
   
     The Notes are a new issue of securities for which there is currently no
trading market. The Underwriters have advised the Company that they currently
intend to make a market in the Notes, although the Underwriters are not
obligated to do so and may discontinue such market making at any time. The
Company does not intend to apply for listing of the Notes on any domestic
securities exchange or to seek approval for quotation through an automated
quotation system. Accordingly, there can be no assurance that an active market
will develop upon completion of the Debt Offering or, if developed, that such
market will be sustained or as to the liquidity of any market. Factors such as
quarterly or cyclical variations in the Company's financial results, variations
in interest rates, future announcements concerning the Company or its
competitors, government regulation, general economic and other conditions and
developments affecting the oil and gas industry could cause the market price of
the Notes to fluctuate substantially.
    
 
                                       20
<PAGE>   24
 
CONCENTRATION OF CUSTOMERS
 
     During 1996, the Company sold 10% or more of its net production of oil and
natural gas to the following purchasers: Natural Gas Clearinghouse (20%); Penn
Union Energy Services (19%); Enron Trading & Transportation (13%); and Hunt
Refining (15%). In addition, the Company is currently selling a majority of its
oil to Hunt Refining under a two-year contract which expires in April 1998 and
is currently receiving a premium to the posted price in this contract. The
Company may not be able to renew this contract in the future or may not be able
to obtain terms as favorable as those in the existing contract. While the
Company believes that its relationships with these purchasers are good, any loss
of revenue from these purchasers could have a material adverse effect on the
Company's results of operations.
 
                           FORWARD-LOOKING STATEMENTS
 
     The statements contained in this Prospectus that are not historical facts,
including, but not limited to, statements found in the "Prospectus Summary,"
"Management's Discussion and Analysis of Financial Condition and Results of
Operations" and "Business and Properties," are "forward-looking statements," as
that term is defined in Section 21E of the Exchange Act, that involve a number
of risks and uncertainties. Such forward-looking statements may be or may
concern, among other things, capital expenditures, drilling activity,
acquisition plans and proposals, dispositions, development activities, cost
savings, production efforts and volumes, hydrocarbon reserves, hydrocarbon
prices, liquidity, regulatory matters and competition. Such forward-looking
statements generally are accompanied by words such as "plan," "estimate,"
"expect," "predict," "anticipate," "projected," "should," "assume," "believe" or
other words that convey the uncertainty of future events or outcomes. Such
forward-looking statements are based upon management's current plans,
expectations, estimates and assumptions and are subject to a number of risks and
uncertainties that could significantly affect current plans, anticipated
actions, the timing of such actions and the Company's financial condition and
results of operations. As a consequence, actual results may differ materially
from expectations, estimates or assumptions expressed in or implied by any
forward-looking statements made by or on behalf of the Company. Among the
factors that could cause actual results to differ materially are: fluctuations
of the prices received or demand for the Company's oil and natural gas, the
uncertainty of drilling results and reserve estimates, operating hazards,
acquisition risks, requirements for capital, general economic conditions,
competition and government regulations, as well as the risks and uncertainties
discussed in this Prospectus, including, without limitation, the portions
referenced above, and the uncertainties set forth from time to time in the
Company's other public reports, filings and public statements.
 
                              [D] EQUITY OFFERING
 
   
     Concurrently with the Debt Offering, the Company is offering 4,557,200
Common Shares to the public in the Equity Offering and TPG is purchasing 290,000
Common Shares in the TPG Purchase. In addition, as part of the Equity Offering
the Company has granted the underwriters an option to purchase up to 683,580
additional Common Shares to cover over-allotments, if any. The closing of the
Debt Offering is conditioned upon the closing of the Equity Offering and the TPG
Purchase; however, the closing of the Equity Offering is not conditioned upon
the closing of the Debt Offering.
    
 
                               [E] DEBT OFFERING
 
   
     Concurrently with the Equity Offering, the Company is offering $125.0
million of      % Senior Subordinated Notes Due 2008 to the public. The
Indenture to be executed in conjunction with the Debt Offering will contain
certain covenants, including covenants that limit (i) indebtedness, (ii)
restricted payments, (iii) issuances and sale of capital stock of restricted
subsidiaries, (iv) sale/leaseback transactions, (v) transactions with
affiliates, (vi) liens, (vii) asset sales, (viii) dividend and other payment
restrictions affecting restricted subsidiaries and (ix) mergers and
consolidations. The closing of the Equity Offering is not conditioned upon the
closing of the Debt Offering; however, the closing of the Debt Offering is
conditioned
    
 
                                       21
<PAGE>   25
 
upon the closing of the Equity Offering. See "Description of Certain
Indebtedness -- Senior Subordinated Notes."
 
                                USE OF PROCEEDS
 
   
     [D] The net proceeds to the Company from the Debt Offering are estimated to
be approximately $121.9 million. Concurrently with the Debt Offering, the
Company is offering 4,557,200 Common Shares in the Equity Offering and TPG is
purchasing 290,000 Common Shares in the TPG Purchase. The closing of the Debt
Offering is conditioned upon the closing of the Equity Offering and the TPG
Purchase; however, the closing of the Equity Offering is not conditioned upon
the closing of the Debt Offering.
    
 
   
     [E] The net proceeds to the Company from the Equity Offering are estimated
to be approximately $78.1 million ($89.9 million if the Underwriters'
over-allotment option is exercised in full), based on an assumed public offering
price of $18.125 per share. Concurrently with the Equity Offering, the Company
is offering $125.0 million aggregate principal amount of      % Senior
Subordinated Notes Due 2008 in the Debt Offering. The closing of the Equity
Offering is not conditioned upon the closing of the Debt Offering; however, the
closing of the Debt Offering is conditioned upon the closing of the Equity
Offering.
    
 
   
     The Company intends to use the total net proceeds of the Offerings and the
TPG Purchase (estimated to be $205.0 million in the aggregate) to reduce
outstanding borrowings under the Credit Facility. The undrawn balance under the
Credit Facility will then be available for capital expenditures and general
corporate purposes, including the acquisition of additional producing oil and
natural gas properties. As of December 31, 1997, the Credit Facility had an
outstanding balance of $240.0 million and an average interest rate of 7.5% per
annum. After the application of the net proceeds from the Offerings and the TPG
Purchase to reduce amounts outstanding under the Credit Facility, the Credit
Facility will consist of a five-year revolving credit facility with a borrowing
base of $165.0 million. The Company borrowed $220.0 million under the Credit
Facility during the fourth quarter of 1997, primarily to fund the Chevron
Acquisition. See "Management's Discussion and Analysis of Financial Condition
and Results of Operations -- Restated Credit Facility," "Business and
Properties -- Acquisitions of Oil and Natural Gas Properties" and "Description
of Certain Indebtedness -- Credit Facility."
    
 
                                       22
<PAGE>   26
 
                        [E] PRICE RANGE OF COMMON SHARES
 
     The Common Shares have been listed on the New York Stock Exchange ("NYSE")
since May 8, 1997 and were listed on the Nasdaq National Market ("NASDAQ") from
August 25, 1995 through May 8, 1997. The Common Shares have also been listed on
The Toronto Stock Exchange ("TSE") in Toronto, Canada, since February 14, 1984.
The Common Shares currently trade under the symbol "DNR" on both the NYSE and
TSE. The following table summarizes the high and low last reported sale prices
(adjusted for the one-for-two reverse stock split in October 1996) as reported
by each exchange for each quarterly period during the last two fiscal years and
to date during 1998.
 
   
<TABLE>
<CAPTION>
                                                      NYSE/NASDAQ            TSE
                                                    ---------------    ---------------
                                                     HIGH     LOW       HIGH     LOW
                                                    ------   ------    ------   ------
                                                         (US$)              (C$)
<S>                                                 <C>      <C>       <C>      <C>
1996
  First Quarter...................................  $ 7.88   $ 6.26    $10.80   $ 8.30
  Second Quarter..................................   10.62     8.50     14.50    12.00
  Third Quarter...................................   13.50    10.00     18.60    12.70
  Fourth Quarter..................................   15.25    12.50     20.95    17.00
1997
  First Quarter...................................   16.00    12.00     21.75    16.40
  Second Quarter..................................   17.63    13.13     24.50    18.00
  Third Quarter...................................   23.75    16.13     33.00    22.20
  Fourth Quarter..................................   24.63    17.88     33.50    25.50
1998
  First Quarter (through January 20, 1998)........   18.81    16.38     26.75    23.50
</TABLE>
    
 
     A recent reported last sale price per share for the Common Shares on the
NYSE and the TSE is set forth on the cover page of this Prospectus. As of
December 31, 1997, to the best of the Company's knowledge, there were
approximately 1,200 holders of record of Common Shares.
 
                              [E] DIVIDEND POLICY
 
     The Company has not paid any dividends in the last five fiscal years on its
Common Shares and does not intend to pay any dividends on its Common Shares in
the foreseeable future. In the past, the Company has used its available cash
flow to conduct exploration and development activities or to make acquisitions,
and expects to continue to do so in the future. DRI is a holding company with no
independent operations. Accordingly, any amounts available for dividends will be
dependent on the prior declaration of dividends by DMI to DRI. In addition, the
terms of the Credit Facility restrict, and the terms of the Notes will restrict,
the payment of dividends by DMI.
 
                                       23
<PAGE>   27
 
                                 CAPITALIZATION
 
   
     The following table sets forth as of September 30, 1997 (i) the actual
capitalization of the Company, (ii) the capitalization of the Company as
adjusted for the Chevron Acquisition, (iii) the capitalization of the Company as
further adjusted to give effect to the Equity Offering, the TPG Purchase and the
application of the net proceeds therefrom and (iv) the capitalization of the
Company as further adjusted to give effect to the Debt Offering and the
application of the net proceeds therefrom. See "Use of Proceeds." This table
should be read in conjunction with "Unaudited Pro Forma Consolidated Financial
Information," "Management's Discussion and Analysis of Financial Condition and
Results of Operations" and the Consolidated Financial Statements.
    
 
   
<TABLE>
<CAPTION>
                                                                 AS OF SEPTEMBER 30, 1997
                                                  ------------------------------------------------------
                                                                              AS FURTHER
                                                                             ADJUSTED FOR
                                                               AS ADJUSTED    THE EQUITY
                                                                 FOR THE       OFFERING     AS ADJUSTED
                                                   COMPANY       CHEVRON       AND TPG        FOR THE
                                                  HISTORICAL   ACQUISITION     PURCHASE     TRANSACTIONS
                                                  ----------   -----------   ------------   ------------
                                                                      (IN THOUSANDS)
<S>                                               <C>          <C>           <C>            <C>
Cash and cash equivalents.......................   $  2,236     $  2,236       $  2,236       $  2,236
                                                   ========     ========       ========       ========
Short-term debt:
  Credit Facility (a)...........................   $     --     $ 47,000       $     --       $     --
                                                   --------     --------       --------       --------
Long-term debt:
  Credit Facility (a)...........................     20,000      175,000        138,919         17,044
     % Senior Subordinated Notes Due 2008.......         --           --             --        125,000
  Other notes payable...........................          5            5              5              5
                                                   --------     --------       --------       --------
          Total long-term debt..................     20,005      175,005        138,924        142,049
                                                   --------     --------       --------       --------
Shareholders' equity (b):
  Common Shares, no par value; unlimited shares
     authorized; 20,364,799 outstanding;
     25,211,999 outstanding as adjusted for the
     Transactions...............................    132,744      132,744        215,825        215,825
  Retained earnings.............................     22,814       22,814         22,814         22,814
                                                   --------     --------       --------       --------
     Total shareholders' equity.................    155,558      155,558        238,639        238,639
                                                   --------     --------       --------       --------
          Total capitalization..................   $175,563     $377,563       $377,563       $380,688
                                                   ========     ========       ========       ========
</TABLE>
    
 
- ---------------
 
   
(a) The Credit Facility was revised and restated in December 1997 in order to
    fund the Chevron Acquisition. After repayment of the acquisition tranche and
    other borrowings thereunder with the net proceeds from the Offerings and the
    TPG Purchase, the Credit Facility will consist of a five year revolving
    credit facility with a borrowing base of $165.0 million.
    
 
   
(b) Excludes 1,512,206 outstanding stock options as of September 30, 1997
    exercisable at various prices ranging from $5.55 to $17.29 per share with a
    weighted average price of $10.69 (of which 395,222 were currently
    exercisable), and 700,000 Common Shares reserved for issuance upon exercise
    of the two series of Common Share purchase warrants. Also excludes 406,620
    stock options that were granted on January 2, 1998, none of which are
    currently exercisable.
    
 
                                       24
<PAGE>   28
 
             UNAUDITED PRO FORMA CONSOLIDATED FINANCIAL INFORMATION
 
   
     The following unaudited pro forma consolidated statements of income for the
year ended December 31, 1996 and the nine months ended September 30, 1997 and
the unaudited pro forma consolidated balance sheet as of September 30, 1997
(collectively, the "Pro Forma Financial Statements") are based on the historical
consolidated financial statements of the Company and the historical financial
statements of the properties acquired by the Company (the "Chevron Properties")
in the Chevron Acquisition, adjusted to give effect to the Transactions.
Additional property acquisitions were made in 1997 that have not been included
in the pro forma adjustments since they are immaterial individually and in the
aggregate. These acquisitions are included in the Company's historical
statements from the date of their respective acquisition.
    
 
     The Unaudited Pro Forma Consolidated Statement of Income for the year ended
December 31, 1996 gives effect to the Transactions as if they had occurred as of
January 1, 1996, and the Unaudited Pro Forma Consolidated Statement of Income
for the nine months ended September 30, 1997 gives effect to the Transactions as
if they had occurred as of January 1, 1997. The Unaudited Pro Forma Consolidated
Balance Sheet gives effect to the Transactions as if they had occurred as of
September 30, 1997. The pro forma adjustments are described in the accompanying
notes and are based upon available information and certain assumptions that
management believes are reasonable.
 
     The Pro Forma Financial Statements do not purport to represent what the
Company's results of operations or financial condition would actually have been
had the Transactions in fact occurred on such dates or to project the Company's
results of operations or financial condition for any future date or period. The
Pro Forma Financial Statements should be read in conjunction with "Management's
Discussion and Analysis of Financial Condition and Results of Operations" and
the Consolidated Financial Statements.
 
                                       25
<PAGE>   29
 
              UNAUDITED PRO FORMA CONSOLIDATED STATEMENT OF INCOME
 
   
<TABLE>
<CAPTION>
                                                          YEAR ENDED DECEMBER 31, 1996
                                        -----------------------------------------------------------------
                                               HISTORICAL                 ADJUSTMENTS
                                        ------------------------    ------------------------
                                                                                   OFFERINGS
                                         COMPANY       CHEVRON        CHEVRON       AND TPG
                                        HISTORICAL    PROPERTIES    ACQUISITION    PURCHASE     PRO FORMA
                                        ----------    ----------    -----------    ---------    ---------
                                                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                     <C>           <C>           <C>            <C>          <C>
Revenues:
  Oil, natural gas and related
     product........................     $52,880       $23,662       $     --       $    --      $76,542
  Interest and other................         769            --             --            --          769
                                         -------       -------       --------       -------      -------
          Total revenues............      53,649        23,662             --            --       77,311
                                         -------       -------       --------       -------      -------
Expenses:
  Production........................      13,495         6,650             --            --       20,145
  General and administrative........       4,267            --            687(b)         --        4,954
  Interest..........................       1,993            --         15,716(c)     (5,067)(e)   12,642
  Imputed preferred dividend........       1,281            --             --            --        1,281
  Loss on early extinguishment of
     debt...........................         440            --             --            --          440
  Depletion and depreciation........      17,904            --          6,697(d)         --       24,601
  Franchise taxes...................         213            --             --            --          213
                                         -------       -------       --------       -------      -------
          Total expenses............      39,593         6,650         23,100        (5,067)      64,276
                                         -------       -------       --------       -------      -------
Income before income taxes..........      14,056        17,012        (23,100)        5,067       13,035
Provision for income taxes..........      (5,312)       (6,294)(a)      8,547(a)     (1,875)(a)   (4,934)
                                         -------       -------       --------       -------      -------
Net income..........................     $ 8,744       $10,718       $(14,553)      $ 3,192      $ 8,101
                                         =======       =======       ========       =======      =======
Net income per common share
  Primary...........................     $  0.67                                                 $  0.45
  Fully diluted.....................        0.62                                                    0.44
Average common shares outstanding...      13,104                                                  17,951
</TABLE>
    
 
      See Notes to Unaudited Pro Forma Consolidated Financial Information
 
                                       26
<PAGE>   30
 
              UNAUDITED PRO FORMA CONSOLIDATED STATEMENT OF INCOME
 
   
<TABLE>
<CAPTION>
                                                       NINE MONTHS ENDED SEPTEMBER 30, 1997
                                         ----------------------------------------------------------------
                                               HISTORICAL                 ADJUSTMENTS
                                         -----------------------    ------------------------
                                                                                   OFFERINGS
                                          COMPANY      CHEVRON        CHEVRON       AND TPG
                                         HISTORICAL   PROPERTIES    ACQUISITION    PURCHASE     PRO FORMA
                                         ----------   ----------    -----------    ---------    ---------
                                                     (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                      <C>          <C>           <C>            <C>          <C>
Revenues:
  Oil, natural gas and related
     product...........................   $60,083      $14,034        $    --       $    --      $74,117
  Interest and other...................       986           --             --            --          986
                                          -------      -------        -------       -------      -------
          Total revenues...............    61,069       14,034             --            --       75,103
                                          -------      -------        -------       -------      -------
Expenses:
  Production...........................    15,737        5,237             --            --       20,974
  General and administrative...........     4,535           --            514(b)         --        5,049
  Interest.............................       387           --         10,289(c)     (2,313)(e)    8,363
  Depletion and depreciation...........    23,224           --          3,942(d)         --       27,166
  Franchise taxes......................       308           --             --            --          308
                                          -------      -------        -------       -------      -------
          Total expenses...............    44,191        5,237         14,745        (2,313)      61,860
                                          -------      -------        -------       -------      -------
Income before income taxes.............    16,878        8,797        (14,745)        2,313       13,243
Provision for income taxes.............    (6,245)      (3,255)(a)      5,456(a)       (856)(a)   (4,900)
                                          -------      -------        -------       -------      -------
Net income.............................   $10,633      $ 5,542        $(9,289)      $ 1,457      $ 8,343
                                          =======      =======        =======       =======      =======
Net income per common share
  Primary..............................   $  0.53                                                $  0.33
  Fully diluted........................      0.50                                                   0.33
Average common shares outstanding......    20,175                                                 25,022
</TABLE>
    
 
      See Notes to Unaudited Pro Forma Consolidated Financial Information
 
                                       27
<PAGE>   31
 
                 UNAUDITED PRO FORMA CONSOLIDATED BALANCE SHEET
 
   
<TABLE>
<CAPTION>
                                                         AS OF SEPTEMBER 30, 1997
                                     ----------------------------------------------------------------
                                                              ADJUSTMENTS
                                                  ------------------------------------
                                                                  EQUITY
                                                                 OFFERING
                                      COMPANY       CHEVRON      AND TPG       DEBT
                                     HISTORICAL   ACQUISITION    PURCHASE    OFFERING       PRO FORMA
                                     ----------   -----------    --------    ---------      ---------
                                                 (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                  <C>          <C>            <C>         <C>            <C>
ASSETS:
Current assets
  Cash and cash equivalents........   $  2,236     $     --      $     --    $     --       $  2,236
  Accrued production receivable....      7,097           --            --          --          7,097
  Trade and other receivables......     14,507           --            --          --         14,507
                                      --------     --------      --------    --------       --------
          Total current assets.....     23,840           --            --          --         23,840
                                      --------     --------      --------    --------       --------
Property and equipment (using full
  cost accounting)
  Oil and gas properties...........    230,521      127,000(f)         --          --        357,521
  Unevaluated oil and gas
     properties....................      6,389       75,000(f)         --          --         81,389
  Less accumulated depreciation and
     depletion.....................    (53,527)          --            --          --        (53,527)
                                      --------     --------      --------    --------       --------
     Net property and equipment....    183,383      202,000            --          --        385,383
                                      --------     --------      --------    --------       --------
Other assets.......................      3,201           --            --       3,125(k)       6,326
                                      --------     --------      --------    --------       --------
          Total assets.............   $210,424     $202,000      $     --    $  3,125       $415,549
                                      ========     ========      ========    ========       ========
LIABILITIES AND SHAREHOLDERS'
  EQUITY:
Current liabilities
  Accounts payable and accrued
     liabilities...................   $ 16,858     $     --      $     --    $     --       $ 16,858
  Oil and gas production payable...      4,060           --            --          --          4,060
  Current portion of long-term
     debt..........................         23       47,000(g)    (47,000)(i)       --            23
                                      --------     --------      --------    --------       --------
          Total current
            liabilities............     20,941       47,000       (47,000)         --         20,941
                                      --------     --------      --------    --------       --------
Long-term liabilities
  Long-term debt...................     20,005      155,000(h)    (36,081)(i) (121,875)(l)    17,049
  Senior subordinated debt.........         --           --            --     125,000(m)     125,000
  Provision for site reclamation
     costs.........................        938           --            --          --            938
  Deferred income taxes and
     other.........................     12,982           --            --          --         12,982
                                      --------     --------      --------    --------       --------
          Total long-term
            liabilities............     33,925      155,000       (36,081)      3,125        155,969
                                      --------     --------      --------    --------       --------
Shareholders' equity
  Common shares, no par value;
     unlimited shares authorized;
     20,364,799 outstanding;
     outstanding pro forma.........    132,744           --        83,081(j)       --        215,825
  Retained earnings................     22,814           --            --          --         22,814
                                      --------     --------      --------    --------       --------
          Total shareholders'
            equity.................    155,558           --        83,081          --        238,639
                                      --------     --------      --------    --------       --------
          Total liabilities and
            shareholders' equity...   $210,424     $202,000      $     --    $  3,125       $415,549
                                      ========     ========      ========    ========       ========
</TABLE>
    
 
      See Notes to Unaudited Pro Forma Consolidated Financial Information
 
                                       28
<PAGE>   32
 
        NOTES TO UNAUDITED PRO FORMA CONSOLIDATED FINANCIAL INFORMATION
 
(a) Income taxes were computed using the federal statutory rate of 35% plus a 2%
    provision for state income taxes.
 
(b) Reflects an increase of $687,000 and $514,000 for the year ended December
    31, 1996 and the nine months ended September 30, 1997, respectively, in
    general and administrative expense for additional personnel and associated
    costs relating to the properties acquired in the Chevron Acquisition, net of
    anticipated allocations to operations and capitalization of exploration
    costs.
 
   
(c) Reflects an increase in interest expense for the period presented to reflect
    the $202.0 million of borrowing under the Credit Facility (at an assumed
    annual interest rate of 7.8% and 6.8% for the year ended December 31, 1996
    and the nine months ended September 30, 1997, respectively) that would have
    been required to fund the Chevron Acquisition had it occurred as of the
    beginning of each respective period.
    
 
   
(d) Depreciation, depletion and amortization ("DD&A") and site reclamation
    expenses have been computed using the unit of production method and reflects
    the Company's increased investment in oil and natural gas properties, which
    investment excludes $75.0 million of the Chevron Acquisition purchase price
    as the Company intends to classify this amount as unevaluated properties at
    December 31, 1997. The December 31, 1997 estimated proved reserves prepared
    by Netherland & Sewell were used in the DD&A computation for the Chevron
    Acquisition.
    
 
   
(e) Reflects a decrease in interest expense for the period presented resulting
    from (i) the receipt of $83.1 million in estimated net proceeds from the
    Equity Offering and the TPG Purchase and the application of such net
    proceeds to reduce borrowings under the Credit Facility and (ii) the receipt
    of $121.9 million in estimated net proceeds from the Debt Offering and the
    application of such net proceeds to reduce borrowings under the Credit
    Facility (assuming the Notes are issued at an annual interest rate of 8.5%).
    Interest expense also includes the amortization of deferred debt issuance
    costs. A change in the interest rate on the Notes of 0.25% would result in a
    $312,500 and $234,375 change in interest expense for the year ended December
    31, 1996 and the nine months ended September 30, 1997, respectively. In the
    event the Debt Offering is not consummated, pro forma interest expense would
    be $11,247,000 and $6,441,000 for the year ended December 31, 1996 and the
    nine months ended September 30, 1997, respectively.
    
 
   
(f) Reflects the purchase price paid in the Chevron Acquisition, of which the
    Company intends to classify $75.0 million as unevaluated properties.
    
 
   
(g) Reflects the incurrence of indebtedness under the Acquisition Tranche (as
    defined herein) of the Credit Facility to finance a portion of the Chevron
    Acquisition.
    
 
(h) Reflects the incurrence of indebtedness under the revolving portion of the
    Credit Facility to finance a portion of the Chevron Acquisition.
 
(i) Reflects the repayment of indebtedness outstanding under the Credit Facility
    with the net proceeds of the Equity Offering and the TPG Purchase.
 
(j) Reflects the issuance and sale of Common Shares in the Equity Offering and
    the TPG Purchase, net of underwriting discounts and commissions and
    estimated expenses.
 
(k) Reflects deferred financing costs incurred in connection with the Debt
    Offering.
 
(l) Reflects the repayment of indebtedness outstanding under the Credit Facility
    with the net proceeds of the Debt Offering.
 
(m) Reflects the issuance of the Notes in the Debt Offering.
 
                                       29
<PAGE>   33
 
                      SELECTED CONSOLIDATED FINANCIAL DATA
 
     The selected historical consolidated financial data for the Company set
forth below as of and for the years ended December 31, 1992, 1993, 1994, 1995
and 1996, have been derived from the audited consolidated financial statements
of the Company. The selected historical consolidated financial data for the
nine-month periods ended September 30, 1996 and 1997, and as of September 30,
1997, have been derived from unaudited consolidated financial statements of the
Company which, in management's opinion, include all adjustments (consisting of
only normal recurring adjustments) necessary to present fairly the results for
such periods. The operating results for such periods are not necessarily
indicative of the operating results to be expected for a full fiscal year. The
information set forth below should be read in conjunction with "Management's
Discussion and Analysis of Financial Condition and Results of Operations" and
the Consolidated Financial Statements included elsewhere in this Prospectus.
 
   
<TABLE>
<CAPTION>
                                                                                                                  NINE MONTHS
                                                                                                                     ENDED
                                                                         YEAR ENDED DECEMBER 31,                 SEPTEMBER 30,
                                                              ----------------------------------------------   -----------------
                                                               1992     1993      1994      1995      1996      1996      1997
                                                              ------   -------   -------   -------   -------   -------   -------
                                                                           (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                                           <C>      <C>       <C>       <C>       <C>       <C>       <C>
INCOME STATEMENT DATA:
  Revenue:
    Oil, natural gas and related product....................  $1,912   $ 5,868   $12,692   $20,032   $52,880   $34,709   $60,083
    Interest income.........................................      40        76        23        77       769       425       986
                                                              ------   -------   -------   -------   -------   -------   -------
        Total revenues......................................   1,952     5,944    12,715    20,109    53,649    35,134    61,069
                                                              ------   -------   -------   -------   -------   -------   -------
  Expenses:
    Production..............................................     634     2,067     4,309     6,789    13,495     9,197    15,737
    General and administrative..............................     955       782     1,105     1,832     4,267     2,825     4,535
    Interest................................................       8        83     1,146     2,085     1,993     1,530       387
    Imputed preferred dividends.............................      --        --        --        --     1,281     1,153        --
    Loss on early extinguishment of debt....................      --        --        --       200       440       440        --
    Depletion and depreciation..............................     690     1,898     4,209     8,022    17,904    12,557    23,224
    Franchise taxes.........................................      --        --        65       100       213       160       308
                                                              ------   -------   -------   -------   -------   -------   -------
        Total expenses......................................   2,287     4,830    10,834    19,028    39,593    27,862    44,191
                                                              ------   -------   -------   -------   -------   -------   -------
  Income (loss) before the following:.......................    (335)    1,114     1,881     1,081    14,056     7,272    16,878
    Gain on sale of Canadian properties.....................      --       966        --        --        --        --        --
                                                              ------   -------   -------   -------   -------   -------   -------
  Income (loss) before income taxes.........................    (335)    2,080     1,881     1,081    14,056     7,272    16,878
  Provision for federal income taxes........................      --      (345)     (718)     (367)   (5,312)   (2,932)   (6,245)
                                                              ------   -------   -------   -------   -------   -------   -------
  Net income (loss).........................................  $ (335)  $ 1,735   $ 1,163   $   714   $ 8,744   $ 4,340   $10,633
                                                              ======   =======   =======   =======   =======   =======   =======
  Net income (loss) per common share:
    Primary.................................................  $(0.11)  $  0.35   $  0.19   $  0.10   $  0.67   $  0.37   $  0.53
    Fully diluted...........................................   (0.11)     0.35      0.19      0.10      0.62      0.36      0.50
  Weighted average common shares outstanding................   2,949     4,990     6,240     6,870    13,104    11,616    20,175
OTHER FINANCIAL DATA:
  Operating cash flow(a)....................................  $  354   $ 3,030   $ 6,185   $ 9,394   $34,140   $21,767   $40,166
  Capital expenditures......................................   6,189    29,855    16,903    28,524    86,857    73,320    70,773
  EBITDA(b).................................................     323     3,019     7,213    11,311    34,905    22,527    39,503
SELECTED RATIOS:
  Ratio of earnings to fixed charges(c).....................      (d)     12.3x      2.6x      1.5x      4.4x      3.1x     34.9x
  Ratio of EBITDA to interest expense.......................    40.4      36.4       6.3       5.4      17.5      14.7     102.1
  Ratio of long-term debt to EBITDA.........................      --       2.0       2.3       0.3       0.1       1.6(e)     0.4(e)
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                                            AS OF DECEMBER 31,                      AS OF
                                                              -----------------------------------------------   SEPTEMBER 30,
                                                               1992     1993      1994      1995       1996         1997
                                                              ------   -------   -------   -------   --------   -------------
                                                                                      (IN THOUSANDS)
<S>                                                           <C>      <C>       <C>       <C>       <C>        <C>
BALANCE SHEET DATA:
  Working capital (deficit).................................  $1,369   $(1,410)  $(1,620)  $ 6,862   $ 12,482     $  2,899
  Total assets..............................................   8,225    35,978    48,964    77,641    166,505      210,424
  Long-term debt, net of current maturities.................      --     6,177    16,536     3,474        125       20,005
  Convertible preferred stock...............................      --        --        --    15,000         --           --
  Shareholders' equity......................................   7,548    24,431    25,962    53,501    142,504      155,558
</TABLE>
    
 
- ---------------
 
(a) Represents cash flow provided by operations, exclusive of the net change in
    non-cash working capital balances.
 
(b) EBITDA represents earnings before interest income, interest expense, income
    taxes, depletion and depreciation, gain on sale of oil and gas properties,
    imputed preferred dividends and losses on early extinguishment of debt. The
    Company has included information concerning EBITDA because it believes that
    EBITDA is used by certain investors as one measure of an issuer's historical
    ability to service its debt. EBITDA is not a measurement determined in
    accordance with generally accepted accounting principles and should not be
    considered in isolation or as a substitute for measures of performance
    prepared in accordance with generally accepted accounting principles.
 
(c) For purposes of determining the ratio of earnings to fixed charges, earnings
    are defined as earnings from continuing operations before income taxes, plus
    fixed charges. Fixed charges consist of interest expense, amortization of
    debt expense, and imputed preferred stock dividends.
 
(d) Earnings were inadequate to cover fixed charges as there was a $317,000
    deficiency.
 
(e) EBITDA for these periods has been annualized.
 
                                       30
<PAGE>   34
 
               MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                      CONDITION AND RESULTS OF OPERATIONS
 
     Denbury is an independent energy company engaged in acquisition,
development and exploration activities in the U.S. Gulf Coast region, primarily
onshore in Louisiana and Mississippi. Over the last four years, the Company has
achieved rapid growth in proved reserves, production and cash flow by
concentrating on the acquisition of properties which it believes have
significant upside potential and through the efficient development, enhancement
and operation of its properties.
 
ACQUISITION OF CHEVRON PROPERTIES
 
   
     On December 30, 1997, the Company acquired oil properties in the Heidelberg
Field, Jasper County, Mississippi, from Chevron for approximately $202.0
million. The Chevron Acquisition represents the largest acquisition by the
Company to date. The Heidelberg Field is adjacent to the Company's other primary
oil properties in Mississippi and includes 122 producing wells, 96 of which the
Company will operate. The Company purchased an average working interest of 94%
and an average net revenue interest of 81% in these 96 wells, which wells
currently account for approximately 99% of the field's average net daily
production. The average net daily production from these properties during the
third quarter of 1997 was approximately 2,840 Bbls/d and 600 Mcf/d.
    
 
   
     The Chevron Acquisition added proved reserves as of December 31, 1997 of
approximately 27.2 MMBbls and 2.5 Bcf, or approximately 27.6 MMBOE. As a result
of the significant amount of future development and exploitation to be performed
on these properties and the increase in future reserves and production that the
Company expects to result from such development and exploitation, the Company
has attributed approximately $75.0 million of the purchase price to unevaluated
properties.
    
 
   
     The Company has identified several potential development projects during
its initial evaluation of the Heidelberg Field. These include initiating a
waterflood project, upgrading lift capacity in over 15 wells and recompleting 30
wells in new zones. In addition, the Company has identified over 40 potential
drilling locations in addition to other potential secondary and tertiary
recovery projects. Horizontal wells drilled by the Company in 1997 at nearby
Davis, Quitman and Eucutta Fields improved daily production rates significantly
as compared to vertical wells drilled in the same fields. Consequently, the
Company anticipates that 30 of the 40 proposed future wells in the Heidelberg
Field will be horizontal wells. The Company's total 1998 development budget for
the Heidelberg Field is approximately $30.0 million.
    
 
ACQUISITION OF HESS PROPERTIES
 
   
     The Company completed several property acquisitions during 1996, the
largest of which was the acquisition of producing oil and natural gas properties
in Mississippi, Louisiana and Alabama, plus certain overriding royalty interests
in Ohio, for approximately $37.2 million from Amerada Hess, effective May 1,
1996. The average daily production from the properties included in the Hess
Acquisition during May and June 1996, the first two months of ownership, was
approximately 2,945 BOE/d. The average daily production on these properties had
increased to 5,373 BOE/d by the third quarter of 1997. As of December 31, 1997,
in the Company's independent reserve report (the "December Report"), the
properties acquired in the Hess Acquisition had estimated net proved reserves of
approximately 14.2 MMBOE with a PV10 Value of $95.0 million. This compares to
approximately 5.9 MMBOE of net proved reserves and a $43.1 million PV10 Value on
these same properties as reported in the Company's independent reserve report
dated July 1, 1996 (the "July Report"). The December Report was calculated using
year-end prices which were based on a WTI price of $16.18 per Bbl and a NYMEX
price of $2.58 per MMBtu, with these representative prices adjusted by field to
arrive at the appropriate corporate net price, as compared to oil and gas prices
of $20.00 and $2.65, respectively, in the July Report. In addition to the
increase in proved reserves, the Company produced approximately 1.9 MMBOE from
July 1, 1996 through September 30, 1997 with total net operating income of $23.8
million.
    
 
                                       31
<PAGE>   35
 
RESTATED CREDIT FACILITY
 
   
     The Company has a credit facility (the "Credit Facility") with NationsBank
of Texas, N.A., as agent for a group of banks. The Credit Facility was increased
in size from $150.0 million to $300.0 million in December 1997 and the borrowing
base was increased to $260.0 million in order to fund the Chevron Acquisition.
After application of the net proceeds from the Offerings and the TPG Purchase to
reduce amounts outstanding under the Credit Facility, the Credit Facility will
consist of a five-year revolving credit facility with a borrowing base of $165.0
million with $130.0 million available on a pro forma basis as of December 31,
1997. The borrowing base is subject to review every six months. The Credit
Facility is secured by substantially all of the Company's oil and natural gas
properties, except for those acquired in the Chevron Acquisition. Interest is
payable on the revolving credit facility at either the prime rate or, depending
on the percentage of the borrowing base that is outstanding, at rates ranging
from LIBOR plus  7/8% to LIBOR plus 1 3/8%; provided that interest is payable at
LIBOR plus 1 5/8% as long as the Acquisition Tranche is outstanding with the
rate escalating 0.25% each quarter, beginning on March 1, 1998 through March 31,
1999, unless the Acquisition Tranche is repaid. The Credit Facility has several
restrictions, including, among others: (i) a prohibition on the payment of
dividends; (ii) a requirement for a minimum equity balance; (iii) a requirement
to maintain positive working capital (as defined in the Credit Agreement); (iv)
a minimum interest coverage test; and (v) a prohibition on most debt, lien and
corporate guarantees.
    
 
THE NOTES
 
   
     The Notes to be issued by DMI are to be fully and unconditionally
guaranteed by DMI's parent company, DRI, pursuant to the terms and conditions of
the Indenture. In addition, under certain circumstances, certain subsidiaries
may in the future guarantee the Notes. The Indenture will contain certain
covenants for the benefit of the holders of the Notes, including, among others,
covenants limiting the payment of dividends, including dividends payable from
DMI to DRI.
    
 
CAPITAL RESOURCES AND LIQUIDITY
 
     As discussed below, in each of the last three years, the Company's capital
expenditures required additional debt and equity capital to supplement cash flow
from operations.
 
   
<TABLE>
<CAPTION>
                                                                            NINE MONTHS
                                             YEAR ENDED DECEMBER 31,           ENDED
                                          -----------------------------    SEPTEMBER 30,
                                           1994       1995       1996          1997
                                          -------    -------    -------    -------------
                                                          (IN THOUSANDS)
<S>                                       <C>        <C>        <C>        <C>
Acquisitions of oil and natural gas
  properties............................  $ 6,606    $16,763    $48,407       $16,073
Oil and natural gas expenditures........   10,297     11,761     38,450        54,700
                                          -------    -------    -------       -------
          Total.........................  $16,903    $28,524    $86,857       $70,773
                                          =======    =======    =======       =======
</TABLE>
    
 
   
     From January 1, 1994 through September 30, 1997, including the pro forma
adjustments for the Chevron Acquisition, the Company has made total capital
expenditures of $405.1 million. These capital expenditures were funded by the
issuance of equity ($105.3 million), bank debt ($209.9 million) and cash
generated by operations ($89.9 million). During 1996, the Company's funds were
provided by operating cash flow and equity, although the Company did use bank
debt during the year. The Company began 1996 with $100,000 of outstanding bank
debt, borrowed $47.9 million during the year, paid off the debt with the
proceeds from a public offering of Common Shares in October 1996 and ended the
year with $100,000 of bank debt outstanding. For the nine months ended September
30, 1997, the Company's average debt outstanding was $3.6 million.
    
 
   
     As of December 31, 1997, the Company had minimal working capital and
approximately $240.0 million of debt outstanding. A portion of this debt also
relates to an acquisition tranche on which the interest rate increases 0.25%
each quarter beginning on March 1, 1998. Although the Company is still reviewing
its budget, particularly in light of the recent Chevron Acquisition, the Company
is currently budgeting capital expenditures for 1998 of approximately $95.0
million, of which approximately $30.0 million is allocated for the
    
 
                                       32
<PAGE>   36
 
   
properties included in the Chevron Acquisition. Although the Company's projected
cash flow is highly variable and difficult to predict as it is dependent on
product prices, drilling success and other factors, these projected expenditures
are expected to exceed the Company's cash flow during 1998. As of December 31,
1997, after giving pro forma effect to the Transactions, the Company would have
had an unused borrowing base of $130.0 million under the Credit Facility to fund
any potential cash flow deficits. If external capital resources are limited or
reduced in the future, the Company can also adjust its capital expenditure
program accordingly. However, such adjustments could limit, or even eliminate,
the Company's future growth. See "Risk Factors -- Substantial Capital
Requirements."
    
 
     In addition to its internal capital expenditure program, the Company has
historically required capital for the acquisition of producing properties, which
have been a major factor in the Company's rapid growth during recent years.
There can be no assurance that suitable acquisitions will be identified in the
future or that any such acquisitions will be successful in achieving desired
profitability objectives. Without suitable acquisitions or the capital to fund
such acquisitions, the Company's future growth could be limited or even
eliminated. As such, the Company is seeking additional financing from the
Offerings and the TPG Purchase in order to reduce amounts outstanding under the
Credit Facility and to better position the Company for future opportunities.
 
     SOURCES AND USES OF FUNDS. During the first nine months of 1997, the
Company spent approximately $54.7 million on exploration and development
expenditures and approximately $16.1 million on acquisitions. The exploration
and development expenditures included approximately $38.2 million spent on
drilling, $6.7 million on geological, geophysical and acreage expenditures and
$9.8 million on workover costs. These expenditures were funded by available
cash, bank debt and cash flow from operations. The Company anticipates that a
total of approximately $10 million will be spent during 1997 on exploration
expenditures $65 million on development expenditures, and $225 million on
acquisitions.
 
     During 1996, the Company spent approximately $33.4 million on oil and
natural gas development expenditures, $37.2 million on the Hess Acquisition,
$7.5 million on properties acquired in April 1996 (the "Ottawa Acquisition"),
$3.7 million on other minor oil and natural gas acquisitions, and approximately
$5.1 million on geological, geophysical and acreage expenditures. The
development expenditures included $15.5 million spent on drilling and $17.9
million spent on workover costs. These expenditures were funded during the year
by bank debt, available cash and cash flow from operations, although the bank
debt was retired with the proceeds from a public offering of Common Shares in
October 1996.
 
     During 1995, the Company made $28.5 million in capital expenditures, with
the single largest component being a $10.0 million acquisition of seven
producing wells in the Gibson and Humphreys Fields located near the Company's
other properties in southern Louisiana (the "Gibson Acquisition"). The balance
of 1995 acquisition expenditures were for additional interests in the Company's
Lirette Field in Louisiana ($2.9 million), interests in the Bully Camp Field,
also in Louisiana ($2.1 million), and a few smaller acquisitions in both
Mississippi and Louisiana. During 1995, the Company also spent $1.9 million
drilling four wells in Mississippi, $1.1 million for acreage, geological and
geophysical and delay rentals, and $8.1 million for workovers of existing
properties. The 1995 expenditures were funded on an interim basis with cash flow
from operations ($9.4 million) and bank debt ($19.4 million), which was repaid
in December 1995 with a portion of the $39.5 million of net proceeds from a
private placement of equity with TPG.
 
     Capital expenditures for 1994 were $16.9 million and included $10.3 million
of development costs, primarily expended on natural gas properties in Louisiana,
with the balance of $6.6 million expended on acquisitions of properties
primarily in Louisiana, of which $5.5 million was spent on acquiring additional
working interests in existing Company-operated properties. Expenditures in 1994
were principally funded by $6.2 million of cash provided by operations and net
incremental debt of $8.8 million, of which $1.5 million came from the issuance
of unsecured convertible debentures and the balance from bank debt.
 
                                       33
<PAGE>   37
 
RESULTS OF OPERATIONS
 
     OPERATING INCOME
 
     During the last three years, operating income has increased significantly
as outlined in the following chart. Oil and gas revenue increased as a result of
the increased oil and gas production and increases in oil and gas product
prices.
 
<TABLE>
<CAPTION>
                                                                        NINE MONTHS ENDED
                                           YEAR ENDED DECEMBER 31,        SEPTEMBER 30,
                                         ----------------------------   ------------------
                                          1994      1995       1996      1996       1997
                                         -------   -------   --------   -------   --------
<S>                                      <C>       <C>       <C>        <C>       <C>
Operating income (in thousands)
  Oil sales............................  $ 6,767   $10,852   $ 28,475   $17,455   $ 36,436
  Natural gas sales....................    5,925     9,180     24,405    17,254     23,647
  Less production expenses.............   (4,309)   (6,789)   (13,495)   (9,197)   (15,737)
                                         -------   -------   --------   -------   --------
     Operating income..................  $ 8,383   $13,243   $ 39,385   $25,512   $ 44,346
                                         =======   =======   ========   =======   ========
Unit prices
  Oil price per Bbl....................  $ 13.84   $ 14.90   $  18.98   $ 18.05   $  17.53
  Gas price per Mcf....................     1.78      1.90       2.73      2.64       2.54
Netback per BOE
  Sales price..........................  $ 12.17   $ 13.05   $  17.69   $ 16.87   $  16.56
  Production expenses..................    (4.13)    (4.42)     (4.51)    (4.47)     (4.34)
                                         -------   -------   --------   -------   --------
                                         $  8.04   $  8.63   $  13.18   $ 12.40   $  12.22
                                         =======   =======   ========   =======   ========
Average net daily production volume
  Bbls.................................    1,340     1,995      4,099     3,529      7,615
  Mcf..................................    9,113    13,271     24,406    23,867     34,061
  BOE..................................    2,858     4,207      8,167     7,507     13,292
</TABLE>
 
   
     COMPARISON OF YEARS ENDED DECEMBER 31, 1994, 1995 AND 1996. Production
increases have been fueled by both internal growth from the Company's
development and exploration programs and from the acquisition of producing
properties. Production on a BOE/d basis increased 47% between 1994 and 1995 with
approximately 240 BOE/d attributable to the Gibson Acquisition and the balance
of approximately 1,109 BOE/d primarily attributable to internal growth. Between
1995 and 1996, production increased 94% with approximately 2,550 BOE/d
attributable to the properties acquired in the Hess and Ottawa Acquisitions and
750 BOE/d attributable to properties acquired in the Gibson Acquisition. The
balance of approximately 660 BOE/d was attributable to internal growth on other
properties.
    
 
     Oil and gas revenue has increased not only because of the large increase in
production, but also due to improved product prices for these periods. Between
1994 and 1995, product price increases were relatively modest with an 8%
increase in oil prices and a 7% increase in natural gas prices. The Company also
realized an $800,000 gas hedging gain during 1995 which added $.17 per Mcf to
its average natural gas price. The Company did not have any oil or natural gas
hedges in place during 1996, nor does it have any currently in place due to the
relatively strong commodity prices and the reduced debt levels of the Company.
During 1996, product prices increased substantially with a 27% increase in the
average oil price and a 44% increase in the average natural gas price. Coupled
with the production increases, the Company's oil and natural gas revenue
increased 164%, or $32.8 million, from 1995 to 1996. Approximately $16.5 million
of the increase was related to properties acquired in the Hess and Ottawa
Acquisitions, approximately $5.4 million to properties acquired in the Gibson
Acquisition, approximately $7.7 million due to the increase in product prices
and the balance of approximately $3.2 million due to increased production from
internal growth on other properties.
 
     Production expenses increased each year along with the increases in
production. On a BOE basis, production expenses increased 7% from 1994 to 1995
and increased 2% from 1995 to 1996. The increases were largely attributable to
the changes in the mix of properties as the Mississippi oil properties tend to
have a higher operating cost per BOE than the Louisiana gas properties. During
the first two months of ownership
 
                                       34
<PAGE>   38
 
   
(May and June 1996), the production expenses averaged $6.27 per BOE on the Hess
Acquisition properties which were more heavily weighted toward Mississippi oil
than Louisiana gas. After assuming operations, these averages were brought more
in line with the Company averages through cost savings and increased production
levels. For the remainder of the year (July through December 1996) production
expenses on these properties averaged $5.05 per BOE.
    
 
     COMPARISON OF NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1996. Production
increases have been fueled by both internal growth from the Company's
development and exploration programs and from the acquisition of producing
properties during 1996, particularly the Hess Acquisition. During May and June
of 1996, the first two months of ownership, the properties acquired in the Hess
Acquisition averaged approximately 2,945 BOE/d. During the first, second and
third quarters of 1997, the production from these same properties averaged
approximately 4,385 BOE/d, 4,613 BOE/d and 5,373 BOE/d, respectively, a 49%, 57%
and 82% increase, respectively, from initial production levels. Total corporate
production on a BOE/d basis increased 21% from the fourth quarter of 1996
average of 10,132 BOE/d to the first quarter of 1997 average of 12,256 BOE/d,
increased an additional 9% to 13,405 BOE/d for the second quarter of 1997 and an
additional increase of 6% to 14,195 BOE/d for the third quarter of 1997. Since
the Company has had only limited acquisitions since the Hess Acquisition, the
production increases since June 30, 1996 were almost solely as a result of
internal development. On a quarter to quarter comparison, production on a BOE
basis increased 54% between the respective third quarters. When comparing the
nine month periods, production on a BOE basis has increased 77%, reflecting the
effect of the Hess Acquisition effective in May 1996.
 
     Oil and gas revenue has increased primarily because of the large increase
in production. Oil product prices decreased by 3% and natural gas product prices
declined 4% or an overall decline of 2% when measured on a BOE basis when
comparing the nine months ended September 30, 1997 to the comparable period in
1996. During the first nine months of 1996, approximately 47% of the Company's
production on a BOE basis was oil while during the first nine months of 1997,
approximately 57% of the Company's production on a BOE basis was oil.
 
     Production expenses on an absolute basis increased between the relative
periods of 1996 and 1997 along with the increases in production. On a BOE basis,
production expenses decreased 3% when comparing the first nine months of 1996 to
the first nine months of 1997. This improvement was a result of efficiencies
achieved from higher production volumes (on both an absolute basis and per well
basis) despite the Company having a higher percentage of oil production in 1997
as compared to 1996, which typically has a higher operating cost per BOE.
 
     GENERAL AND ADMINISTRATIVE EXPENSES
 
     As outlined below, general and administrative ("G&A") expenses have
increased along with the Company's growth.
 
<TABLE>
<CAPTION>
                                                                         NINE MONTHS ENDED
                                             YEAR ENDED DECEMBER 31,       SEPTEMBER 30,
                                            --------------------------   -----------------
                                             1994     1995      1996      1996      1997
                                            ------   -------   -------   -------   -------
<S>                                         <C>      <C>       <C>       <C>       <C>
Net G&A expenses (in thousands)
  Gross expenses..........................  $2,475   $ 3,900   $ 8,407   $ 5,583   $ 9,999
  State franchise taxes...................      65       100       213       159       308
  Operator overhead charges...............    (890)   (1,438)   (2,916)   (1,906)   (3,789)
  Capitalized exploration expenses........    (480)     (630)   (1,224)     (851)   (1,675)
                                            ------   -------   -------   -------   -------
  Net expenses............................  $1,170   $ 1,932   $ 4,480   $ 2,985   $ 4,843
                                            ======   =======   =======   =======   =======
Average G&A cost per BOE..................  $ 1.12   $  1.25   $  1.50   $  1.45   $  1.33
Employees as of end of period.............      27        51       122       109       141
</TABLE>
 
     COMPARISON OF YEARS ENDED DECEMBER 31, 1994, 1995 AND 1996. On a BOE basis,
these costs increased 12% from 1994 to 1995 and increased 20% from 1995 to 1996.
Part of the increase in 1995 was attributable to $190,000 of costs ($0.12 per
BOE) related to non-recurring personnel changes. As a result of improved
 
                                       35
<PAGE>   39
 
financial results during the first quarter of 1996 and other factors, the
Company conducted a review of salaries and awarded increases and bonuses in
February 1996 to its employees. Bonuses, including related payroll taxes,
amounted to approximately $225,000 ($0.08 per BOE). During 1996, the Company
also accrued $545,000 ($0.18 per BOE) for bonuses which were awarded in February
1997. In addition, the Company began to increase its staff levels during the
second quarter of 1996 to handle the Hess Acquisition, but was not entitled to
any operator's overhead recovery on these properties until July 15, 1996,
resulting in a further increase in general and administrative cost per BOE, as
Amerada Hess remained the operator of record until that date.
 
     COMPARISON OF NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1996. On a BOE
basis, G&A expenses declined 8% when comparing the first nine months of 1996 to
the comparable period in 1997. The decrease is partially attributable to the
increased production on both an absolute and per well basis. Furthermore, the
respective well operating agreements allow the Company, when it is the operator,
to charge a well with a specified overhead rate during the drilling phase. As a
result of the increased drilling activity in 1997, the percentage of gross G&A
recovered through these types of allocations (listed in the above table as
"Operator overhead charges") increased when compared to the corresponding
periods of 1996. During the first nine months of 1996, approximately 34% was
recovered by operator overhead charges, while during the comparable period of
1997 this increased to 38%. This trend is even more pronounced in the third
quarter of 1997 with 42% of the gross G&A recovered as compared to 35% for the
third quarter of 1996.
 
     INTEREST AND FINANCING EXPENSES
 
   
<TABLE>
<CAPTION>
                                                                       NINE MONTHS ENDED
                                           YEAR ENDED DECEMBER 31,       SEPTEMBER 30,
                                         ---------------------------   ------------------
                                          1994      1995      1996       1996      1997
                                         -------   -------   -------   --------   -------
                                             (IN THOUSANDS, EXCEPT PER UNIT AMOUNTS)
<S>                                      <C>       <C>       <C>       <C>        <C>
Interest expense.......................  $ 1,146   $ 2,085   $ 1,993    $ 1,530    $  387
Non-cash interest expense..............      (86)      (90)     (459)      (345)      (64)
                                         -------   -------   -------    -------    ------
Cash interest expense..................    1,060     1,995     1,534      1,185       323
Interest and other income..............      (23)      (77)     (769)      (425)     (986)
                                         -------   -------   -------    -------    ------
  Net interest expense.................  $ 1,037   $ 1,918   $   765    $   760    $ (663)
                                         =======   =======   =======    =======    ======
Average interest cost per BOE..........  $  0.99   $  1.26   $  0.26    $  0.37    $(0.18)
Average debt outstanding...............   12,200    21,400    19,500     20,673     3,610
Ratio of earnings to fixed charges.....      2.6x      1.5x      4.4x       3.1x     34.9x
Imputed preferred dividend.............  $    --   $    --   $ 1,281    $ 1,153    $   --
Loss on early extinguishment of debt...       --       200       440        440        --
</TABLE>
    
 
     During the first half of 1996 and 1997, the Company had minimal debt
outstanding as virtually all of the bank debt had been retired during the
previous fourth quarter. In 1995, the bank debt was repaid with proceeds from
the December 1995 private placement of equity with TPG and in 1996, the debt was
repaid with proceeds from a public offering of Common Shares completed in
October 1996. However, in 1996, the Company did incur debt late in the second
quarter in order to fund property acquisitions and, during the third quarter of
1997, the Company borrowed approximately $20 million to fund $12.5 million of
property acquisitions and $7.5 million of development expenditures.
 
     The private placement of equity in December 1995 with TPG included 1.5
million shares of Convertible Preferred. During 1996, the Company recognized
$1.3 million of charges representing the imputed preferred dividend until
October 30, 1996 when the Convertible Preferred were converted into 2.8 million
Common Shares. Under Canadian generally accepted accounting principles, this
dividend was reported as an operating expense, while under U.S. generally
accepted accounting principles this would not be an expense but it would be
deducted from net income to arrive at net income attributable to the common
shareholders. In addition to paying off its bank debt and converting the
Convertible Preferred into common equity during 1996, the Company also converted
its remaining subordinated debt into common equity, leaving the Company
essentially debt-free as of December 31, 1996.
 
                                       36
<PAGE>   40
 
     During 1996, the Company had a $440,000 charge relating to a loss on early
extinguishment of debt. These costs related to the remaining unamortized debt
issue costs of the Company's prior credit facility which was replaced in May
1996, as previously discussed. The Company also had a charge of $200,000 during
the first half of 1995 for the same type of expense relating to a previous bank
debt refinancing. Under U.S. generally accepted accounting principles, a loss on
early extinguishment of debt would be an extraordinary item rather than a normal
operating expense as required by Canadian generally accepted accounting
principles.
 
     DEPLETION, DEPRECIATION AND SITE RESTORATION
 
     COMPARISON OF YEARS ENDED DECEMBER 31, 1994, 1995 AND 1996. DD&A has
increased along with the additional capitalized cost and increased production.
DD&A per BOE has increased 30% from 1994 to 1995 and 15% from 1995 to 1996
primarily due to 59% of the 1995 capital expenditures and 56% of the 1996
expenditures relating to property acquisitions, which had a higher per unit cost
for the Company than those reserves added by development expenditures.
 
     COMPARISON OF NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1996. The Company's
DD&A rate per BOE for the first half of 1997 increased to $6.50 per BOE to
provide for the estimated effect of reduced oil prices on reserve quantities,
the estimated effect of rising drilling costs on certain proved undeveloped
locations, and higher than anticipated costs on wells drilled in Louisiana that
were proved undeveloped locations at December 31, 1996. In comparison, the
Company's DD&A rate was $5.99 per BOE for the year ended December 31, 1996. The
oil prices used in the December 31, 1996 reserve report were based on a WTI
posting price of $23.39 per Bbl in accordance with the rules of the Commission
while the comparable WTI price at June 30, 1997 was $17.15 per Bbl. This
reduction in oil prices reduced the June 30, 1997 estimated reserves by
approximately 1.3 MMBbls.
 
     As a result of two oil and natural gas discoveries announced in September,
1997, the Company's third quarter DD&A rate decreased to $6.22 per BOE ($6.40
per BOE for the nine months ended September 30, 1997). During the third quarter
of 1997, the Company also transferred approximately $4.6 million from the
unevaluated properties to the full cost pool reflecting activity on these
properties, leaving a balance of approximately $6.4 million in unevaluated
properties as of September 30, 1997. The DD&A effect of this transfer was
approximately $440,000 for the quarter.
 
     The Company also provides for the estimated future costs of well
abandonment and site reclamation, net of any anticipated salvage, on a
unit-of-production basis. This provision is included in the DD&A expense and has
increased each year along with an increase in the number of properties owned by
the Company.
 
   
<TABLE>
<CAPTION>
                                                                       NINE MONTHS ENDED
                                            YEAR ENDED DECEMBER 31,      SEPTEMBER 30,
                                           -------------------------   -----------------
                                            1994     1995     1996      1996      1997
                                           ------   ------   -------   -------   -------
                                              (IN THOUSANDS, EXCEPT PER UNIT AMOUNTS)
<S>                                        <C>      <C>      <C>       <C>       <C>
Depletion and depreciation...............  $4,177   $7,918   $17,533   $12,430   $22,899
Site restoration provision...............      32      104       371       127       325
                                           ------   ------   -------   -------   -------
Total amortization.......................  $4,209   $8,022   $17,904   $12,557   $23,224
                                           ======   ======   =======   =======   =======
Average DD&A cost per BOE................  $ 4.03   $ 5.22   $  5.99   $  6.10   $  6.40
</TABLE>
    
 
                                       37
<PAGE>   41
 
     INCOME TAXES
 
     Due to net operating losses by its U.S. subsidiary each year for tax
purposes, the Company does not have any current tax provision. The deferred tax
provision as a percentage of net income has varied depending on the mix of
Canadian and U.S. expenses. The rate declined from 1994 to 1995 as there were
less Canadian expenses, but increased again slightly in 1996 due to the
non-deductible imputed preferred dividend and interest on the subordinated debt.
 
<TABLE>
<CAPTION>
                                                                       NINE MONTHS ENDED
                                            YEAR ENDED DECEMBER 31,      SEPTEMBER 30,
                                           -------------------------   -----------------
                                            1994     1995     1996      1996      1997
                                           ------   ------   -------   -------   -------
<S>                                        <C>      <C>      <C>       <C>       <C>
Deferred income taxes (thousands)........  $  718   $  367   $ 5,312   $ 2,932   $ 6,245
Average income tax costs per BOE.........    0.69     0.24      1.78      1.43      1.72
Effective tax rate.......................      38%      34%       38%       40%       37%
</TABLE>
 
                                                                      NET INCOME
 
     Primarily as a result of increased production and improved product prices,
net income and cash flow from operations increased substantially between 1995
and 1996 as outlined below. Between 1994 and 1995, net income decreased 39% as a
result of certain nonrecurring charges and a disproportionate increase in DD&A
as compared to the increase in revenue. Net income and cash flow from operations
increased substantially on both a gross and per share basis between the first
nine months of 1996 and the first nine months of 1997 as outlined below.
 
   
<TABLE>
<CAPTION>
                                                                       NINE MONTHS ENDED
                                            YEAR ENDED DECEMBER 31,      SEPTEMBER 30,
                                           -------------------------   -----------------
                                            1994     1995     1996      1996      1997
                                           ------   ------   -------   -------   -------
                                             (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                        <C>      <C>      <C>       <C>       <C>
Net income...............................  $1,163   $  714   $ 8,744   $ 4,340   $10,633
Net income per common share:
  Primary................................    0.19     0.10      0.67      0.37      0.53
  Fully diluted..........................    0.19     0.10      0.62      0.36      0.50
Cash flow from operations(a).............   6,185    9,394    34,140    21,767    40,166
</TABLE>
    
 
- ---------------
 
(a) Represents cash flow provided by operations, exclusive of the net change in
    non-cash working capital balances.
 
                                       38
<PAGE>   42
 
     The following table summarizes the cash flow, DD&A and net income on a BOE
basis for the comparative periods. Each of the individual components are
discussed above.
 
   
<TABLE>
<CAPTION>
                                                                           NINE MONTHS
                                                                              ENDED
                                              YEAR ENDED DECEMBER 31,     SEPTEMBER 30,
                                              ------------------------   ---------------
                                               1994     1995     1996     1996     1997
                                              ------   ------   ------   ------   ------
<S>                                           <C>      <C>      <C>      <C>      <C>
Per BOE data
  Revenue...................................  $12.17   $13.05   $17.69   $16.87   $16.56
  Production expenses.......................   (4.13)   (4.42)   (4.51)   (4.47)   (4.34)
                                              ------   ------   ------   ------   ------
  Production netback........................    8.04     8.63    13.18    12.40    12.22
  General and administrative................   (1.12)   (1.25)   (1.50)   (1.45)   (1.33)
  Interest..................................   (0.99)   (1.26)   (0.26)   (0.37)    0.18
                                              ------   ------   ------   ------   ------
     Cash flow from operations(a)...........    5.93     6.12    11.42    10.58    11.07
  DD&A......................................   (4.03)   (5.22)   (5.99)   (6.10)   (6.40)
  Deferred income taxes.....................   (0.69)   (0.24)   (1.78)   (1.43)   (1.72)
  Other non-cash items......................   (0.10)   (0.19)   (0.72)   (0.94)   (0.02)
                                              ------   ------   ------   ------   ------
     Net income.............................  $ 1.11   $ 0.47   $ 2.93   $ 2.11   $ 2.93
                                              ======   ======   ======   ======   ======
</TABLE>
    
 
- ---------------
 
(a) Represents cash flow provided by operations, exclusive of the net change in
    non-cash working capital balances.
 
YEAR 2000 MODIFICATIONS
 
     The Company is currently reviewing its computer systems in order to
evaluate necessary modifications for the year 2000. The Company does not
currently anticipate that it will incur material expenditures to complete any
such modifications.
 
RECENTLY ISSUED ACCOUNTING STANDARDS
 
     See discussion of Recently Issued Accounting Standards in Note 7 of the
Consolidated Financial Statements.
 
                            BUSINESS AND PROPERTIES
 
THE COMPANY
 
   
     Denbury is an independent energy company engaged in acquisition,
development and exploration activities in the U.S. Gulf Coast region, primarily
onshore in Louisiana and Mississippi. The Company believes the Gulf Coast
represents one of the most attractive regions in North America given the
region's prolific production history, complex geology (with multiple producing
horizons) and the opportunities that have been created by advanced technologies
such as 3-D seismic and various drilling, completion and recovery techniques. As
of December 31, 1997, the Company had proved reserves of 52.0 MMBbls and 77.2
Bcf or 64.9 MMBOE, including 27.6 MMBOE attributable to the Chevron Acquisition.
At such date, the PV10 Value of these reserves was $361.3 million, of which
$276.5 million was attributable to proved developed reserves. Denbury operates
wells comprising approximately 83% of its PV10 Value. The eight largest fields
in which the Company has an interest constitute approximately 82% of its
estimated proved reserves and, within these eight fields, Denbury owns an
average working interest of 91%.
    
 
   
     Over the last four years, the Company has achieved rapid growth in proved
reserves, production and cash flow by concentrating on the acquisition of
properties which it believes have significant upside potential and through the
efficient development, enhancement and operation of its properties. For the
four-year period ended December 31, 1997, the Company increased its proved
reserves at a compound annual growth rate of 83%, from 5.8 MMBOE to 64.9 MMBOE.
Over the four-year period ended December 31, 1996, the Company
    
 
                                       39
<PAGE>   43
 
also increased its average net daily production at a compound annual growth rate
of 90%, from 1,193 BOE/d to 8,167 BOE/d, with a further increase to 14,195 BOE/d
for the third quarter of 1997. For the same four-year period, EBITDA increased
at a compound annual growth rate of 126%, from $3.0 million to $34.9 million.
EBITDA for the twelve months ended September 30, 1997 was $51.9 million.
 
   
     Since 1993, when the Company began to focus its operations exclusively in
the United States, through December 31, 1995, the Company spent a total of $43.4
million on acquisitions. In May 1996, the Company acquired properties in its
core areas of Mississippi and Louisiana from Amerada Hess for approximately
$37.2 million. As of June 30, 1996, these acquired properties were producing
approximately 2,945 BOE/d and had proved reserves of approximately 5.9 MMBOE.
Since that date, the Company's extensive development and exploitation on these
properties has resulted in an 82% increase in their production to 5,373 BOE/d
for the third quarter of 1997 and a 141% increase in their proved reserves to
14.2 MMBOE as of December 31, 1997.
    
 
   
     On December 30, 1997, the Company acquired oil properties in the Heidelberg
Field, which is adjacent to the Company's other primary oil properties in
Mississippi, from Chevron for approximately $202.0 million. These properties are
located approximately nine miles from the Eucutta Field, the property with the
highest PV10 Value of those acquired by the Company in the Hess Acquisition. The
estimated proved reserves as of January 1, 1998 for the Chevron Acquisition
properties are approximately 27.6 MMBOE, with average net daily production of
approximately 2,940 BOE/d for the third quarter of 1997. As a result of the
significant amount of future development and exploitation to be performed on
these properties and the increase in future reserves and production that the
Company expects to result from such development and exploitation, the Company
has attributed approximately $75.0 million of the purchase price to unevaluated
properties. The Company believes that the properties acquired in the Chevron
Acquisition provide exploitation opportunities similar to those of the
Mississippi properties acquired in the Hess Acquisition and the Company intends
to apply the same technologies to the Heidelberg Field. The Company's estimated
1998 development budget for the Heidelberg Field is approximately $30.0 million.
See "-- Acquisition of Chevron Properties."
    
 
BUSINESS STRATEGY
 
     The Company seeks to: (i) achieve attractive returns on capital through
prudent acquisitions, development and exploratory drilling and efficient
operations; (ii) maintain a conservative balance sheet to preserve maximum
financial and operational flexibility; and (iii) create strong employee
incentives through equity ownership. The Company believes that its growth to
date in proved reserves, production and cash flow is a direct result of its
adherence to several fundamental principles which are at the core of the
Company's long-term growth strategy. The Company's long-term growth strategy
includes the following fundamental principles:
 
     REGIONAL FOCUS. The Company intends to continue the regional focus of its
operations. By focusing its efforts in the Gulf Coast region, primarily
Louisiana and Mississippi, the Company has been able to accumulate substantial
geological and reservoir data and operating experience which it believes
provides it with significant competitive advantages. For example, the Company
believes it is better able to identify, evaluate and negotiate potential
acquisitions, and develop and operate its properties in an efficient and low-
cost manner. The Company believes the Gulf Coast represents one of the most
attractive regions in North America given the region's prolific production
history, complex geology (with multiple producing horizons) and the
opportunities that have been created by advanced technologies such as 3-D
seismic and various drilling, completion and recovery techniques. Moreover,
because of the region's proximity to major pipeline networks serving important
northeastern U.S. markets, the Company typically realizes natural gas prices in
excess of those realized in many other producing regions.
 
     DISCIPLINED ACQUISITION STRATEGY. The Company intends to continue to
acquire properties where it believes significant additional value can be
created. Such properties are typically characterized by: (i) long production
histories; (ii) complex geological formations with multiple producing horizons
and substantial exploitation potential; (iii) a history of limited operational
focus and capital investment, often due to their relatively small size and
limited strategic importance to the previous owner; and (iv) the potential for
the Company to gain control of operations. The Company believes that due to
continuing rationalization of
 
                                       40
<PAGE>   44
 
properties, primarily by major integrated and independent energy companies,
future acquisition opportunities should continue to be available. In addition,
the Company seeks to maintain a well-balanced portfolio of oil and natural gas
development, exploitation and exploration projects in order to minimize the
overall risk profile of its investment opportunities while still providing
significant upside potential. The recent Hess and Chevron Acquisitions are
examples of the types of opportunities the Company seeks.
 
   
     OPERATION OF HIGH WORKING INTEREST PROPERTIES. The Company intends to
continue to acquire working interest positions that give it operational control
or that the Company believes may lead to operational control. As the operator of
properties comprising approximately 83% of its total PV10 Value, the Company
believes it is better able to manage and monitor production and more effectively
control expenses, the allocation of capital and the timing of field development.
Once a property is acquired, the Company employs its technical and operational
expertise to fully evaluate a field's future potential. If favorable, it will
consolidate its working interest positions, primarily through negotiated
transactions, which tend to be attractively priced compared to acquisitions
available in competitive situations. The consolidation of ownership allows the
Company to: (i) enhance the effectiveness of its technical staff by
concentrating on relatively few wells; (ii) increase production while adding
virtually no additional personnel; and (iii) increase ownership in a property so
that the potential benefits of value enhancement activities justify the
allocation of Company resources.
    
 
     EXPLOITATION OF PROPERTIES. The Company intends to maximize the value of
its properties through a combination of increasing production, increasing
recoverable reserves or reducing operating costs. During 1997, the Company's
primary methodology for achieving these objectives was the use of horizontal
drilling, which it also intends to emphasize in 1998. Horizontal drilling has
historically produced oil at faster rates and with lower operating costs on a
BOE basis than traditional vertical drilling. The Company also utilizes a
variety of other techniques to maximize property values, including: (i)
undertaking surface improvements such as rationalizing, upgrading or redesigning
production facilities; (ii) making downhole improvements such as resizing
downhole pumps or reperforating existing production zones; (iii) reworking
existing wells into new production zones with additional potential; and (iv)
utilizing exploratory drilling, which is frequently based on various advanced
technologies such as 3-D seismic.
 
   
     EXPERIENCED AND INCENTIVIZED PERSONNEL. The Company intends to maintain a
highly competitive team of experienced and technically proficient employees and
motivate them through a positive work environment and stock ownership in the
Company. The Company's 29 geological and engineering professionals have an
average of over 15 years of experience in the Gulf Coast region. The Company
believes that employee ownership, which is encouraged through the Company's
stock option and stock purchase plans, is essential for attracting, retaining
and motivating quality personnel. As of January 1, 1998, approximately 86% of
the Company's employees were participating in the Company's stock purchase plan.
The Company believes that all employees are important to the success of the
Company and as such grants bonuses and stock options to both management and
employees on a basis roughly proportional to salaries.
    
 
OIL AND NATURAL GAS OPERATIONS
 
   
     Denbury operates in two core areas, Louisiana and Mississippi. The Company
operates 67 wells in Louisiana from an office in Houma and 161 wells in
Mississippi from an office in Laurel. The eight largest oil and natural gas
fields owned by the Company constitute approximately 85% and 82%, respectively,
of its total proved reserves on a BOE and PV10 Value basis. Within these eight
fields, Denbury owns an average 91% working interest and operates 85% of the
wells, which comprise 71% of the Company's PV10 Value. The Company's eight
largest fields are located in three adjacent counties in Mississippi and one
parish in Louisiana. This concentration of value in a relatively small number of
fields allows the Company to benefit substantially from any operating cost
reductions or production enhancements and allows the Company to effectively
manage the properties from its two field offices.
    
 
     These two core areas are similar in that the major trapping mechanisms for
oil and natural gas accumulations are structural features usually related to
deep-seated salt or shale movement. Both areas typically feature fields with
mostly multiple sandstone reservoirs supported by strong waterdrives. However,
the two areas differ significantly in drilling costs, risks and the size of
potential reserves. In Mississippi, the
 
                                       41
<PAGE>   45
 
producing zones are generally shallower than in Louisiana and therefore drilling
and workover costs are lower. However, the geological complexity of southern
Louisiana, which is more expensive to exploit, creates the potential for larger
discoveries, particularly of natural gas. The Company's production in Louisiana
is predominately natural gas, while Mississippi is predominately oil.
 
     The following table sets forth information with respect to Denbury's
properties, reserves and drilling and production activities. The information
included in this table about the Company's proved oil and natural gas reserve
estimates as of December 31, 1997 were prepared by Netherland & Sewell. See
"Risks Factors -- Uncertainty of Estimates of Oil and Natural Gas Reserves."
 
   
<TABLE>
<CAPTION>
                                                                          AVERAGE NET PRODUCTION            AS OF
                                            PROVED RESERVES                  THIRD QUARTER OF           SEPTEMBER 30,
                                        AS OF DECEMBER 31, 1997                   1997(A)                   1997
                                ---------------------------------------   -----------------------   ---------------------
                                                                  PV10                                           AVERAGE
                                           NATURAL      PV10      VALUE                  NATURAL      GROSS        NET
                                  OIL        GAS       VALUE      % OF       OIL           GAS      PRODUCTIVE   REVENUE
                                (MBBLS)    (MMCF)    (000'S)(B)   TOTAL    (BBLS/D)      (MCF/D)     WELLS(C)    INTEREST
                                --------   -------   ----------   -----   ----------    ---------   ----------   --------
<S>                             <C>        <C>       <C>          <C>     <C>           <C>         <C>          <C>
LOUISIANA
  Lirette.....................      289    27,746      44,668      12.4%       161        11,983        18         63.0%
  Gibson......................      302     6,631      12,658       3.5%       196         4,602         3         57.8%
  South Chauvin...............      135     7,333       9,734       2.7%        48         3,029         4         73.4%
  Bayou Rambio................       69    11,353      18,205       5.0%        45         3,254         3         59.1%
  Other Louisiana.............    1,423    15,048      33,192       9.2%     1,186        10,232        82         48.7%
                                 ------    ------     -------     -----      -----        ------       ---
    Total Louisiana...........    2,218    68,111     118,457      32.8%     1,636        33,100       110         51.5%
                                 ------    ------     -------     -----      -----        ------       ---
MISSISSIPPI
  Heidelberg(d)...............   30,171     2,517     118,973      32.9%        --            --        --           --
  Eucutta.....................    8,967        --      58,657      16.2%     1,895            --        45         75.3%
  Davis.......................    2,660        --      13,348       3.7%     1,033            --        25         90.5%
  Quitman.....................    3,032        --      19,064       5.3%     1,914            --        18         60.7%
  Other Mississippi...........    4,834     5,597      29,667       8.2%     1,594         2,716        87         53.1%
                                 ------    ------     -------     -----      -----        ------       ---
  Total Mississippi...........   49,664     8,114     239,709      66.3%     6,436         2,716       175         66.5%
                                 ------    ------     -------     -----      -----        ------       ---
Other.........................      136       966       3,163       0.9%        76           466        --           --
                                 ------    ------     -------     -----      -----        ------       ---
Company Total.................   52,018    77,191     361,329     100.0%     8,148        36,282       285         60.7%
                                 ======    ======     =======     =====      =====        ======       ===
</TABLE>
    
 
- ---------------
 
(a) This table does not include production on the properties acquired in the
    Chevron Acquisition. See "-- Production Volumes, Sales Prices and Production
    Costs" for pro forma production data.
 
   
(b) The reserves were prepared using constant prices and costs in accordance
    with the guidelines of the Commission, based on the prices received on a
    field by field basis as of December 31, 1997. The oil price at that date was
    WTI $16.18 per Bbl adjusted by field and a NYMEX natural gas price average
    of $2.58 per MMBtu, also adjusted by field.
    
 
(c) Includes only productive wells in which the Company has a working interest
    as of September 30, 1997.
 
   
(d) Includes properties acquired in the Chevron Acquisition, as well as
    properties acquired in three other minor acquisitions in the same field. The
    average net production on the properties acquired in the Chevron Acquisition
    from July 1, 1997 through September 30, 1997 was 2,840 Bbls/d and 600 Mcf/d
    from 122 gross productive wells with an average net revenue interest of 81%.
    
 
     MISSISSIPPI OPERATING AREA
 
     In Mississippi, most of the Company's production is oil, produced largely
from depths of less than 10,000 feet. Fields in this region are characterized by
relatively small geographic areas which generate prolific production from
multiple pay sands. The Company's Mississippi production is usually associated
with large amounts of saltwater, which must be disposed of in saltwater disposal
wells, and almost all wells require pumping. These factors increase the
operating costs on a per barrel basis as compared to Louisiana. The Company
places considerable emphasis on reducing these costs in order to maximize the
cash flow from this area. The Company has increased its emphasis in horizontal
drilling based on its apparent success during the
 
                                       42
<PAGE>   46
 
past year. These horizontal wells have contributed to the reduction of operating
costs on a BOE basis during the last twelve months, as these wells typically
produce oil more efficiently, resulting in higher production rates and better
recovery efficiency.
 
   
     The Company drilled its first horizontal well in 1995 at the South Thompson
Creek Field in Mississippi and drilled a subsequent horizontal well in this
field during 1996. Both of these wells were completed as producers. During the
last quarter of 1996 and through the end of 1997, the Company completed twelve
horizontal wells at an average cost of $1,050,000. These wells produced at an
average production rate of 420 Bbls/d in their initial month of production.
Although horizontal wells typically decline rapidly from their initial
production rates, these twelve wells had an average production rate of 280
Bbls/d for the month of December 1997 and have been producing for an average of
seven months. These horizontal wells typically have a higher internal rate of
return than a comparable vertical well, reduce operating costs per BOE and
reduce the number of wells required to drain the reservoir. The Company plans to
drill over 50 horizontal wells in 1998 in Mississippi.
    
 
     HEIDELBERG FIELD. Heidelberg field was discovered in 1944 and has produced
an estimated 191 MMBbls and 36 Bcf since its discovery. This Field is a large
salt-cored anticline which is divided by faulting into a western and eastern
half. Production is from a series of normally pressured Cretaceous and Jurassic
sandstone horizons situated between 4,500 feet and 11,500 feet. There are 11
producing formations in the Heidelberg Field containing 44 individual reservoir
intervals, with the majority of the current production coming from the Eutaw and
Christmas sands at depths of approximately 5,000 feet.
 
     The West Heidelberg Eutaw sands have been unitized and water injection
began late in 1996 in order to increase the bottom hole pressure and improve
recoveries from the formation. A production response to the injection is
expected during 1998. The Eutaw East One Fault Block Oil Pool Unit (Eutaw
formation in East Heidelberg) was unitized in October 1997 and injection is
projected to commence in March 1998. These waterflood projects, particularly the
East Unit, comprise a significant portion of the potential reserves at
Heidelberg. The Company has a 78% working interest in the East Unit, 59% of
which was acquired in the Chevron Acquisition and the remaining 19% of which was
acquired over a three-month period from three other entities. The Company
operates a similar Eutaw unit at its East Eucutta Field, located approximately
nine miles to the southeast, with production from sands with similar porosity,
permeability, thickness and drive mechanisms.
 
   
     The Company has identified several potential development projects during
its initial evaluation of the Heidelberg Field. These include initiating a
waterflood project, upgrading lift capacity in over 15 wells and recompleting 30
wells in new zones. In addition, the Company has identified over 40 potential
drilling locations in addition to other potential secondary and tertiary
recovery projects. Horizontal wells drilled by the Company in 1997 at nearby
Davis, Quitman and Eucutta Fields improved daily production rates significantly
as compared to vertical wells drilled in the same fields. Consequently, the
Company anticipates that 30 of the 40 proposed future wells will be horizontal
wells. The Company's total 1998 development budget for the Heidelberg Field is
approximately $30 million.
    
 
     Based on its experience in other fields in the same area, the Company
believes that significant additional reserve potential may exist beyond the
identified proven reserves. The development budget in 1998 and ensuing years is
expected, in part, to be used to evaluate this potential which is summarized
below:
 
   
     Higher Oil Recovery in the Eutaw Sand Waterfloods. Since discovery of the
Heidelberg Field, total cumulative production in the Eutaw formation through
December 1997 has been 80 MMBbls, which, based upon geological and engineering
analysis, the Company estimates has recovered 22% of the original oil in place.
Based upon a similar analysis, the Company estimates that historical cumulative
production from the Eutaw formation under waterflood at nearby East Eucutta
Field has recovered an estimated 34% of the oil in place. The Company believes
that similar recovery factors may be achievable at Heidelberg Field based on the
geological conditions that appear to be analogous. The Company will also attempt
to improve the recovery factors through the use of horizontal drilling and may
also employ tertiary recovery methods such as carbon dioxide injection. The
Company currently is evaluating the feasibility of such methods.
    
 
                                       43
<PAGE>   47
 
   
     Higher Oil Recovery in the Christmas Sands. Because of the success of the
Company's horizontal drilling program in other fields in the area, the Company
intends to develop the Christmas sands primarily through horizontal drilling.
Since its discovery, the Christmas sands have produced approximately 67 MMBbls
through December 1997. The Company believes these sands are ideal for horizontal
development due to the strong natural water drive of these reservoirs. Recent
horizontal drilling by the Company has produced oil at faster rates and reduced
operating costs on a BOE basis as compared to vertical drilling. Although
Denbury believes that horizontal drilling should ultimately increase the amount
of oil recovered from the Christmas sands, to date the Company does not have
enough production history to determine if, and to the extent, oil recoveries
will increase.
    
 
   
     Further Drilling in Deeper Zones. The zones below the Christmas formation
including the Tuscaloosa, Paluxy, Rodessa, Hosston, Cotton Valley and Smackover
formations, have produced on a cumulative basis a combined 44 MMBbls and 14 Bcf
through December 1997. The Company believes that additional reserve potential
may exist for extensions of existing reservoirs and potential new reservoirs in
these zones within the Heidelberg Field area. A 36-square mile 3-D seismic
program over the field was shot by Chevron in 1993 and will be acquired under
license by Denbury. The Company intends to reprocess the 3-D seismic data to
evaluate this potential.
    
 
     EUCUTTA FIELD. The Eucutta Field is located about 18 miles east of Laurel,
Mississippi. Since its discovery in 1943, this field has produced 63 MMBbls and
4.7 Bcf. Denbury acquired the majority of its interests in this field as part of
the Hess Acquisition and currently operates 45 producing oil wells and 3
saltwater injection wells. Most of the wells produce oil with large amounts of
saltwater, which requires pumping and disposal.
 
     The Eucutta Field is divided into a shallow Eutaw sand unit in which the
Company has a 78% working interest and the deeper Tuscaloosa, Wash-Fred, Paluxy,
Rodessa, Sligo and Hosston sand zones in which the Company has a 100% working
interest. The Eucutta Field traps oil in multiple sandstone reservoirs from the
Eutaw to the Hosston Formations in this highly faulted anticline from depths of
5,000 to 11,000 feet. Denbury recently established new production in the Paluxy
interval in a series of six stacked sands. Two additional delineation wells have
been drilled and completed for this interval and the Company currently plans to
drill six horizontal wells to fully develop this new area. The deeper intervals
of the Cotton Valley and Smackover formations have yet to be tested in crestal
positions on this structure although these two horizons have proved to be highly
productive throughout the Mississippi Salt Basin.
 
   
     Since its acquisition in May 1996, the Company has implemented a capital
expenditure program at Eucutta Field which included upgrading production
facilities, recompletions and drilling wells. At the time of acquisition,
production from this field was approximately 1,100 Bbls/d. All six wells drilled
in 1997 were successful, one of which was a horizontal well. As a result of
these wells and other development work, during December 1997 the net production
increased to an average of 2,976 Bbls/d. The Company plans to shoot a 3-D
seismic survey over the field and have it processed by late 1998. During 1998,
the Company also plans to drill 16 wells, of which nine will be horizontal
wells.
    
 
   
     DAVIS FIELD. The Davis Field is located 42 miles northeast of Laurel in the
northern part of the Mississippi salt basin. Denbury operates 36 producing wells
within the area. Davis is a compact anticline that has produced over 21 MMBbls
since its discovery by Conoco in 1969. Over 30 sands have produced oil between
the intervals of 5,000 feet and 8,000 feet. At the time of acquisition in 1993,
the gross production from this field was approximately 700 Bbls/d. During the
month of December 1997, the gross production was approximately 960 Bbls/d with
net production of 870 Bbls/d.
    
 
   
     The Davis Field is a relatively mature field and produces large amounts of
saltwater. During December 1997, the field produced an average of approximately
53,000 barrels of saltwater per day, all of which were re-injected into the
ground. The Company places considerable emphasis on controlling operating costs
in this field by minimizing the cost of saltwater disposal and pumping
equipment.
    
 
     Since acquiring the majority of the Davis Field in 1993, Denbury has
undertaken an active redevelopment program including numerous workovers and five
development wells. As a result of this work and continued
 
                                       44
<PAGE>   48
 
   
reductions in operating costs, the Company has been able to steadily increase
the proven reserves every year. During 1996, the Company drilled two successful
horizontal wells to improve withdrawal efficiency and drilled an additional
three horizontal wells in 1997, with one additional well in progress as of
December 31, 1997. The Company plans to drill five wells in this field in 1998
of which four will be horizontal wells.
    
 
     QUITMAN FIELD. The Quitman Field is located in Clarke County, Mississippi,
31 miles northeast of Laurel and near the Davis Field. The Company acquired the
field as part of the Hess Acquisition and now operates 18 producing wells. The
Company owns an average working interest of 93%. The Quitman Field was
discovered in 1966 and has since produced approximately 21 MMBbls from 18
separate reservoirs between 7,500 feet and 12,000 feet. The principal producing
zones at Quitman Field are the Smackover formation and several sands in the
Cotton Valley formation.
 
   
     Since its acquisition in May, 1996, the Company has implemented a capital
expenditure program at Quitman Field which has included upgrading production
facilities and drilling wells. At the time of acquisition, the net production
from this field was approximately 200 Bbls/d. During December 1997, the net
production averaged 1,676 Bbls/d. All five wells drilled in 1997 were
successful, of which two were horizontal wells. During 1998, the Company plans
to drill four wells, of which three will be horizontal wells.
    
 
   
     OTHER MISSISSIPPI FIELDS. In addition to the above fields, Denbury owns an
interest in wells in 35 other fields in Mississippi, which in the aggregate
averaged approximately 1,728 Bbls/d and 2.5 MMcf/d of net production during
December 1997.
    
 
     LOUISIANA OPERATING AREA
 
     The Company's southern Louisiana producing fields are typically large
structural features containing multiple sandstone reservoirs. Current production
depths range from 7,000 feet to 16,000 feet with potential throughout the area
for even deeper production. The region produces predominantly natural gas, with
most reservoirs producing with a water-drive mechanism.
 
     The majority of the Company's southern Louisiana fields lie in the Houma
embayment area of Terrebonne and LaFourche Parishes. The area is characterized
by complex geological structures which have produced prolific reserves, typical
of the lower Gulf Coast geosyncline. Given the swampy conditions of southern
Louisiana, 3-D seismic has only recently become feasible for this area as
improvements in field recording techniques have made the process more
economical. 3-D seismic has become a valuable tool in exploration and
development throughout the onshore Gulf Coast and has been pivotal in
discovering significant reserves. The Company currently owns or has license to
work on over 300 square miles of 3-D seismic data and plans to continue to
expand its data ownership. The Company believes that this 3-D seismic data, some
of which is the first 3-D shot in these swampy areas, has the potential to
identify significant exploration prospects, particularly in the deeper
geopressured sections below 12,000 feet.
 
     During 1995, the Company acquired approximately 46 square miles of 3-D
seismic data over five of its existing fields in Southern Louisiana, namely
Bayou Rambio, De Large, North Deep Lake, Gibson and Humphreys. During 1996, the
Company entered into a joint venture agreement with two industry partners and
shot approximately 158 square miles of 3-D seismic data in the Terrebonne Parish
area, which includes three of the Company's existing fields, Lirette, Lapeyrouse
and North Lapeyrouse. The Company's existing productive zones are excluded from
the joint venture. Denbury owns a one-third interest in any new prospects
discovered through this joint venture that currently owns rights to over 35,000
acres within the survey area. The 3-D seismic survey is complete and two wells
have been drilled to date based on the results of the survey. One was a dry hole
and the other a successful well in the Lirette Field area. There are currently
10 identified prospect areas which have been generated as a result of the
survey, of which three should be drilled during the first half of 1998. The 3-D
seismic survey is still being reviewed for additional drilling opportunities.
 
     LIRETTE FIELD. The Lirette structure is a large salt-cored anticline
located about 10 miles south of Houma, Louisiana, which has produced over one
Tcf of natural gas from multiple reservoirs. The field is located in six to ten
feet of inland water and produces from depths of 8,000 feet to 16,000 feet. The
field was discovered in 1937, but in 1993, when the Company first acquired a 23%
working interest in the field, gross production had
 
                                       45
<PAGE>   49
 
   
declined to less than 3 MMcf/d. By January 1995, following a series of workovers
of existing wells, gross production had grown to approximately 13.2 MMcf/d and
360 Bbls/d (6.5 MMcf/d and 150 Bbls/d net). Additional interests were acquired
in 1995 and 1997 to increase the Company's ownership to its current average 82%
working interest. During December 1997 the net production from this field
averaged approximately 10.6 MMcf/d and 179 Bbls/d from 18 wells.
    
 
     During the latter half of 1996, the Lirette Field was covered by a 3-D
seismic survey which is currently being evaluated. One well was drilled in the
Lirette area in 1997, the Scana No. 1 Laterre, as a result of this 3-D seismic
survey. This well established two pay sands in the prolific Tex W interval a
southern untested fault block. Two additional untested fault blocks have been
identified on the Lirette structure and are scheduled for drilling during 1998.
 
   
     GIBSON FIELD. In late 1994, Denbury acquired minor working interests in
five wells in the Gibson and adjacent Humphreys Fields located in Terrebonne
Parish, 20 miles northwest of the Lirette Field, in the northern part of the
Houma embayment. The Gibson Field, since its discovery in 1937, has produced
over 813 Bcf and 14 MMBbls. During 1995, the Company acquired and processed 38
square miles of 3-D seismic data covering these fields and in November 1995
acquired a additional working interest in these fields. By December 1995,
Denbury's acreage position had grown to 3,165 net acres with interests in three
active wells and five inactive wells. During December 1997, the net production
in this field averaged approximately 5.4 MMcf/d and 105 Bbls/d. Denbury drilled
two wells in this area in 1997, one of which was successful. This well, the
Pelican A-12, found two productive intervals and was completed in the lower most
formation. This well produced at an average rate of 442 Mcf/d, net to the
Company, during the month of December 1997. No wells are currently planned in
this field for 1998.
    
 
   
     SOUTH CHAUVIN FIELD. In February 1996, the Company purchased interests in
two producing wells and four non-producing wells in South Chauvin Field located
in the Houma embayment area, about four miles south of Houma and six miles
northwest of Lirette Field. Of the four currently producing wells at Chauvin,
the Company owns an average 94% working interest. During December 1997, the net
production from this field averaged 4.2 MMcf/d and 85 Bbls/d. In late 1996, the
Company acquired 13.7 square miles of 3-D seismic data covering the field and is
currently evaluating the data. The Company drilled one well in this area in 1997
which produced at an average rate of 2.9 MMcf/d and 72 Bbls/d, net to the
Company, during the month of December 1997. One well, a sidetrack of an existing
well, is currently planned in this field for 1998.
    
 
   
     BAYOU RAMBIO FIELD. Production at the Bayou Rambio Field was established in
1955 and has exceeded 150 Bcf and 920 MBbls to date. The Company operates three
producing wells in the field, which is located in Terrebonne Parish about 15
miles west of Lirette Field. During December 1997, the net production from this
field averaged 7.0 MMcf/d and 53 Bbls/d. Two of these producing wells were
drilled in 1997 based on a review of 3-D seismic data. The Company has one
additional well planned for the first half of 1998 which will attempt to
accelerate the production of the established reserves increasing the field's
PV10 Value, while drilling a deeper sand interval which may establish additional
pay sands.
    
 
   
     OTHER LOUISIANA FIELDS. In addition to the above fields, the Company owns
an interest in wells at 39 other fields in Louisiana, which in the aggregate
averaged approximately 14.2 MMcf/d and 959 Bbls/d of net production during
December 1997.
    
 
ACQUISITIONS OF OIL AND NATURAL GAS PROPERTIES
 
   
     The Company regularly seeks to acquire properties that complement its
operations, provide exploitation, exploration and development opportunities and
have cost reduction potential. The Company has purchased the majority of its
current producing wells and has increased production by a variety of techniques,
including development drilling, increasing fluid withdrawal and reworking
existing wells. These acquisitions have also balanced the Company's reserve mix
between oil and natural gas, increased the scale of its operations in the
onshore Gulf Coast area and provided the Company with a significant base of
operations within its area of geographic focus. Since 1993, aggregate
expenditures to acquire producing properties are approximately $310 million
through September 30, 1997 adjusted for the Chevron Acquisition. The properties
included in the Company's five largest acquisitions make up approximately 84% of
its total proved reserves on a BOE basis
    
 
                                       46
<PAGE>   50
 
as of December 31, 1997. These five acquisitions are discussed below in the
order of their acquisition by the Company.
 
   
     MISSISSIPPI ACQUISITION (1993). Effective May 1, 1993, the Company acquired
interests in the Davis, Frances Creek and Lake Utopia Fields in the Mississippi
salt basin for approximately $9.0 million. At the date of acquisition, the
estimated net proved reserves included 2,170 MBbls and 217 MMcf, aggregating to
2.2 MMBOE. From the date of acquisition through September 30, 1997, the Company
produced 1,377 MBOE from the acquired properties and has successfully increased
its ownership in the Davis Field through approximately $4.3 million of
incremental acquisitions. As of December 31, 1997, the estimated net proved
reserves of the properties totaled 3.1 MMBOE, with a PV10 Value of $15.8
million.
    
 
   
     LOUISIANA ACQUISITION (1993). Effective October 1, 1993, Denbury acquired
interests in the Lirette, Bayou Rambio, Delarge, Lapeyrouse, Lake Boeuf, North
Deep Lake and Bay Baptiste Fields in southern Louisiana for approximately $9.8
million. Six of the seven fields are situated in the prolific Houma Embayment,
which is located south of Houma and approximately 40 miles south of New Orleans,
Louisiana. This basin contains fields which have produced more than 2 Tcf of gas
since 1930. These fields have established productive sand intervals as shallow
as 1,000 feet to depths in excess of 17,000 feet, with individual well
production rates exceeding 10 MMcf/d.
    
 
   
     At the date of acquisition, the net proved reserves included 155 MBbls and
9,137 MMcf, aggregating to 1.7 MMBOE. From the date of acquisition through
September 30, 1997, the Company produced 2,898 MBOE from the acquired
properties. Subsequent to the acquisition, Denbury has successfully completed
approximately $12.7 million in acquisitions of incremental interests in the
Lirette and Bayou Rambio Fields. As of December 31, 1997, the estimated net
proved reserves of the properties were 7.4 MMBOE, with a PV10 Value of $68.7
million.
    
 
   
     GIBSON ACQUISITION (1995). In October 1995, Denbury acquired additional
interests in the Gibson and Humphreys Fields in Southern Louisiana for
approximately $10.2 million. At the date of acquisition, the net proved reserves
included approximately 412 MBbls and 9,435 MMcf, aggregating to 2.0 MMBOE. From
the date of acquisition through September 30, 1997, the Company produced 1,285
MBOE from the acquired properties. As of December 31, 1997, the estimated net
proved reserves of the properties were 1.5 MMBOE, with a PV10 Value of $13.9
million.
    
 
   
     HESS ACQUISITION (1996). The Company completed several property
acquisitions during 1996, the largest of which was the acquisition of producing
oil and natural gas properties in Mississippi, Louisiana and Alabama, plus
certain overriding royalty interests in Ohio, for approximately $37.2 million
from Amerada Hess, effective May 1, 1996. The average daily production from the
properties included in the Hess Acquisition during May and June 1996, the first
two months of ownership, was approximately 2,945 BOE/d. The average daily
production on these properties had increased to 5,373 BOE/d by the third quarter
of 1997. As of December 31, 1997, in the Company's December Report, the
properties acquired in the Hess Acquisition had estimated net proved reserves of
approximately 14.2 MMBOE with a PV10 Value of $95.0 million. This compares to
approximately 5.9 MMBOE of net proved reserves and a $43.1 million PV10 Value on
these same properties as reported in the July Report. The December Report was
calculated using year-end prices which were based on a WTI price of $16.18 per
Bbl and a NYMEX price of $2.58 per Mcf, with these representative prices
adjusted by field to arrive at the appropriate corporate net price, as compared
to oil and gas prices of $20.00 and $2.65, respectively, in the July Report. In
addition to the increase in proved reserves, the Company produced approximately
1.9 MMBOE from July 1, 1996 through September 30, 1997 with total net operating
income of $23.8 million.
    
 
   
     The two largest fields acquired in the Hess Acquisition are the Eucutta and
Quitman Fields which make up approximately 82% of the total Hess Acquisition
PV10 Value. Both fields are in the same vicinity as the Company's previously
existing Mississippi core properties.
    
 
   
     CHEVRON ACQUISITION (1997). On December 30, 1997, the Company acquired oil
properties in the Heidelberg Field, Jasper County, Mississippi, from Chevron for
approximately $202.0 million. The Chevron Acquisition represents the largest
acquisition by the Company to date. The Heidelberg Field is adjacent to the
    
 
                                       47
<PAGE>   51
 
   
Company's other primary oil properties in Mississippi and includes 122 producing
wells, 96 of which the Company will operate. The Company purchased an average
working interest of 94% and an average net revenue interest of 81% in these 96
wells, which wells account for approximately 99% of the field's current average
net daily production. The average net daily production from these properties
during the third quarter of 1997 was approximately 2,840 Bbls/d and 600 Mcf/d.
    
 
   
     The Chevron Acquisition added proved reserves as of December 31, 1997 of
approximately 27.2 MMBbls and 2.5 Bcf, or approximately 27.6 MMBOE. As a result
of the significant amount of future development and exploitation to be performed
on these properties and the increase in future reserves and production that the
Company expects to result from such development and exploitation, the Company
has attributed approximately $75.0 million of the purchase price to unevaluated
properties.
    
 
   
     The Company has identified several potential development projects during
its initial evaluation of the Heidelberg Field. These include initiating a
waterflood project, upgrading lift capacity in over 15 wells and recompleting 30
wells in new zones. In addition, the Company has identified over 40 potential
drilling locations in addition to other potential secondary and tertiary
recovery projects. Horizontal wells drilled by the Company in 1997 at nearby
Davis, Quitman and Eucutta Fields improved daily production rates significantly
as compared to vertical wells drilled in the same fields. Consequently, the
Company anticipates that 30 of the 40 proposed future wells in the Heidelberg
Field will be horizontal wells. The Company's total 1998 development budget for
the Heidelberg Field is approximately $30.0 million.
    
 
PRODUCTION VOLUMES, SALES PRICES AND PRODUCTION COSTS
 
     The following table summarizes the Company's net oil and natural gas
production volumes, average sales prices and production costs for each of the
years in the three-year period ended December 31, 1996 and for the nine month
periods ended September 30, 1996 and 1997.
 
<TABLE>
<CAPTION>
                                 YEAR ENDED DECEMBER 31,            NINE MONTHS ENDED SEPTEMBER 30,
                           ------------------------------------    ---------------------------------
                                                      PRO FORMA                           PRO FORMA
                            1994     1995     1996     1996(A)       1996       1997       1997(A)
                           ------   ------   ------   ---------    --------   --------   -----------
<S>                        <C>      <C>      <C>      <C>          <C>        <C>        <C>
NET PRODUCTION VOLUME:
  Oil (MBbls)............     489      728    1,500     2,752           967      2,079       2,873
  Natural gas (MMcf).....   3,326    4,844    8,933     9,178         6,540      9,299       9,459
  Oil equivalent (MBOE)..   1,043    1,535    2,989     4,282         2,057      3,629       4,449
AVERAGE SALE PRICES:
  Oil ($/Bbl)............  $13.84   $14.90   $18.98    $18.75        $18.05     $17.53      $17.45
  Natural gas ($/Mcf)....    1.78     1.90     2.73      2.72          2.64       2.54        2.54
  Oil equivalent
     ($/BOE).............   12.17    13.05    17.69     17.88         16.87      16.56       16.65
AVERAGE PRODUCTION COSTS:
  Per BOE................  $ 4.13   $ 4.42   $ 4.51    $ 4.70        $ 4.47     $ 4.34      $ 4.71
</TABLE>
 
- ---------------
 
(a) Pro forma for the Chevron Acquisition. See "-- Acquisitions of Oil and
    Natural Gas Properties" and "Unaudited Pro Forma Consolidated Financial
    Information."
 
OIL AND NATURAL GAS ACREAGE
 
     The following table sets forth the Company's acreage position as of
December 31, 1996:
 
<TABLE>
<CAPTION>
                                                         DEVELOPED        UNDEVELOPED
                                                      ---------------   ---------------
                                                      GROSS     NET     GROSS     NET
                                                      ------   ------   ------   ------
<S>                                                   <C>      <C>      <C>      <C>
Louisiana...........................................  29,328   20,374   10,137    7,812
Mississippi.........................................  17,511   11,138   19,180    8,002
Other...............................................   1,710    1,260    1,709      722
                                                      ------   ------   ------   ------
          Total.....................................  48,549   32,772   31,026   16,536
                                                      ======   ======   ======   ======
</TABLE>
 
                                       48
<PAGE>   52
 
     The following table sets forth the Company's acreage position as of
September 30, 1997:
 
<TABLE>
<CAPTION>
                                                         DEVELOPED        UNDEVELOPED
                                                      ---------------   ---------------
                                                      GROSS     NET     GROSS     NET
                                                      ------   ------   ------   ------
<S>                                                   <C>      <C>      <C>      <C>
Louisiana...........................................  28,519   19,870   20,542   10,668
Mississippi.........................................  17,102   12,655   27,185   10,970
                                                      ------   ------   ------   ------
          Total.....................................  45,621   32,525   47,727   21,638
                                                      ======   ======   ======   ======
</TABLE>
 
PRODUCTIVE WELLS
 
     The following table sets forth the Company's gross and net productive wells
as of December 31, 1996:
 
<TABLE>
<CAPTION>
                                                              NATURAL GAS
                                                OIL WELLS        WELLS           TOTAL
                                              -------------   ------------   -------------
                                              GROSS    NET    GROSS   NET    GROSS    NET
                                              -----   -----   -----   ----   -----   -----
<S>                                           <C>     <C>     <C>     <C>    <C>     <C>
Louisiana...................................    44     24.8     66    38.1    110     62.9
Mississippi.................................   142    106.0     28    14.8    170    120.8
Other.......................................     4      2.0     12     5.3     16      7.3
                                               ---    -----    ---    ----    ---    -----
          Total.............................   190    132.8    106    58.2    296    191.0
                                               ===    =====    ===    ====    ===    =====
</TABLE>
 
     The following table sets forth the Company's gross and net productive wells
as of September 30, 1997:
 
<TABLE>
<CAPTION>
                                                              NATURAL GAS
                                                OIL WELLS        WELLS           TOTAL
                                              -------------   ------------   -------------
                                              GROSS    NET    GROSS   NET    GROSS    NET
                                              -----   -----   -----   ----   -----   -----
<S>                                           <C>     <C>     <C>     <C>    <C>     <C>
Louisiana...................................    40     25.7     70    43.2    110     68.9
Mississippi.................................   154    132.5     21     7.2    175    139.7
                                               ---    -----    ---    ----    ---    -----
          Total.............................   194    158.2     91    50.4    285    208.6
                                               ===    =====    ===    ====    ===    =====
</TABLE>
 
DRILLING ACTIVITY
 
     The following table sets forth the results of drilling activities during
each of the three years in the period ended December 31, 1996 and the nine
months ended September 30, 1997. No wells were in the process of drilling at
September 30, 1997.
 
<TABLE>
<CAPTION>
                                                                                       NINE MONTHS
                                               YEAR ENDED DECEMBER 31,                    ENDED
                                   -----------------------------------------------    SEPTEMBER 30,
                                       1994             1995             1996             1997
                                   -------------    -------------    -------------    -------------
                                   GROSS    NET     GROSS    NET     GROSS    NET     GROSS    NET
                                   -----    ----    -----    ----    -----    ----    -----    ----
<S>                                <C>      <C>     <C>      <C>     <C>      <C>     <C>      <C>
EXPLORATORY WELLS:
  Productive.....................    --       --      --       --      --       --       2      0.8
  Nonproductive..................     3      0.8       2      1.0       1      1.0       5      2.4
DEVELOPMENT WELLS:
  Productive.....................     4      2.9       2      1.5       9      7.9      26     22.7
  Nonproductive..................     1      1.0      --       --      --       --       2      1.1
                                   ----     ----    ----     ----    ----     ----    ----     ----
          Total..................     8      4.7       4      2.5      10      8.9      35     27.0
                                   ====     ====    ====     ====    ====     ====    ====     ====
</TABLE>
 
PRODUCT MARKETING
 
     Denbury's production is primarily from developed fields close to major
pipelines or refineries and established infrastructure. As a result, Denbury has
not experienced any difficulty in finding a market for its product as it becomes
available or in transporting its product to these markets.
 
                                       49
<PAGE>   53
 
     OIL MARKETING. Denbury markets its oil to a variety of purchasers, most of
which are large, established companies. The oil is generally sold under a
short-term contract with the sales price based on an applicable posted price,
plus a negotiated premium. This price is determined on a well-by-well basis and
the purchaser generally takes delivery at the wellhead. Mississippi oil, which
accounted for approximately 73% of the Company's oil production in 1996, is
primarily light sour crude and sells at a discount to the published WTI posting.
The balance of the oil production, Louisiana oil, is primarily light sweet
crude, which typically sells at a slight premium to the WTI posting.
 
     The Company is currently selling a majority of its oil under a two-year
contract to Hunt Refining which expires on April 1998 and is currently receiving
a premium to the posted price in this contract. The Company may not be able to
renew this contract in the future or may not be able to obtain terms as
favorable as those in the existing contract.
 
     NATURAL GAS MARKETING. Virtually all of Denbury's natural gas production is
close to existing pipelines and consequently, the Company generally has a
variety of options to market its natural gas. The Company sells the majority of
its natural gas on one year contracts with prices fluctuating month-to-month
based on published pipeline indices with slight premiums or discounts to the
index.
 
     PRODUCTION PRICE HEDGING. For 1995, the Company entered into financial
contracts to hedge 75% of the Company's net natural gas production and 43% of
the Company's net oil production. The net effect of these hedges was to increase
oil and natural gas revenues by approximately $750,000 during 1995. The Company
does not currently have any hedging contracts in place, although it may enter
into such contracts in the future.
 
SIGNIFICANT OIL AND NATURAL GAS PURCHASERS
 
     Oil and natural gas sales are made on a day-to-day basis under short-term
contracts at the current area market price. The loss of any purchaser would not
be expected to have a material adverse effect upon the Company's operations. For
the period ended December 31, 1996, the Company sold 10% or more of its net
production of oil and natural gas to the following purchasers: Natural Gas
Clearinghouse (20%), Penn Union Energy Services (19%), Enron Trading &
Transportation (13%) and Hunt Refining (15%).
 
TITLE TO PROPERTIES
 
     Customarily in the oil and natural gas industry, only a perfunctory title
examination is conducted at the time properties believed to be suitable for
drilling operations are first acquired. Prior to commencement of drilling
operations, a thorough drill site title examination is normally conducted and
curative work is performed with respect to significant defects. During
acquisitions, title reviews are performed on all properties; however, formal
title opinions are obtained on only the higher value properties. The Company
believes that it has good title to its oil and natural gas properties, some of
which are subject to minor encumbrances, easements and restrictions.
 
COMPETITION
 
     The oil and natural gas industry is highly competitive in all its phases.
The Company encounters strong competition from many other energy companies in
acquiring economically desirable producing properties and drilling prospects and
in obtaining equipment and labor to operate and maintain its properties. In
addition, many energy companies possess greater resources than the Company. See
"Risk Factors -- Competition."
 
GEOGRAPHIC SEGMENTS
 
     All of the Company's operations are in the United States.
 
OFFICE AND FIELD FACILITIES
 
     The Company leases its executive and administrative offices in Dallas,
Texas, consisting of approximately 25,000 square feet, under a lease that
continues through May 1999. On August 6, 1997, the Company entered
 
                                       50
<PAGE>   54
 
into a ten year office lease for approximately 50,000 square feet to replace its
current corporate headquarters. This new lease is expected to commence late in
1998.
 
EMPLOYEES
 
   
     At January 15, 1998, the Company had 183 employees associated with its
operations, including 69 field personnel in Mississippi and 35 field personnel
in Louisiana. None of the Company's employees is represented by a union. The
Company considers its employee relations to be satisfactory.
    
 
LEGAL PROCEEDINGS
 
     From time to time, the Company is a party to legal proceedings in the
ordinary course of its business, including actions for personal injury and
property damage occurring as a result of the operation of wells, and claims for
environmental damage. In June of 1997, a well blow-out occurred at the Lake
Chicot Field, for which the Company is operator, in St. Martin Parish, Louisiana
in which four individuals that were employees of other third party entities were
killed, none of whom were employees or contractors of the Company. In connection
with this blow-out, a lawsuit was filed on July 2, 1997, Barbara Trahan, et al
 .v. Mallard Bay Drilling L.L.C., Parker Drilling Company and Denbury Management,
Inc., Case No. 58226-G in the 16th Judicial District Court in St. Martin Parish,
Louisiana alleging various defective and dangerous conditions violation of
certain rules and regulations and acts of negligence. The Company believes that
all litigation to which it is a party is covered by insurance and none of such
legal proceedings can be reasonably expected to have a material adverse effect
on the Company's financial condition or results of operations. See "Risk
Factors -- Drilling and Operating Risks."
 
REGULATIONS
 
     The availability of a ready market for oil and gas production depends upon
numerous factors beyond the Company's control. These factors include regulation
of natural gas and oil production, federal and state regulations governing
environmental quality and pollution control, state limits on allowable rates of
production by well or proration unit, the amount of natural gas and oil
available for sale, the availability of adequate pipeline and other
transportation and processing facilities and the marketing of competitive fuels.
State and federal regulations generally are intended to prevent waste of natural
gas and oil, protect rights to produce natural gas and oil between owners in a
common reservoir, control the amount of natural gas and oil produced by
assigning allowable rates of production and control contamination of the
environment. Pipelines are subject to the jurisdiction of various federal, state
and local agencies. The following discussion summarizes the regulation of the
United States oil and gas industry and is not intended to constitute a complete
discussion of the various statutes, rules, regulations and governmental orders
to which the Company's operations may be subject.
 
     REGULATION OF NATURAL GAS AND OIL EXPLORATION AND PRODUCTION. The Company's
operations are subject to various types of regulation at the federal, state and
local levels. Such regulation includes requiring permits for drilling wells,
maintaining bonding requirements in order to drill or operate wells and
regulating the location of wells, the method of drilling and casing wells, the
surface use and restoration of properties upon which wells are drilled, the
plugging and abandoning of wells and the disposal of fluids used in connection
with operations. The Company's operations are also subject to various
conservation laws and regulations. These include the regulation of the size of
drilling and spacing units or proration units and the density of wells which may
be drilled in and the unitization or pooling of oil and gas properties. In
addition, state conservation laws establish maximum rates of production from oil
and gas wells, generally prohibit the venting or flaring of gas and impose
certain requirements regarding the ratability of production. The effect of these
regulations may limit the amount of oil and gas the Company can produce from its
wells and may limit the number of wells or the locations at which the Company
can drill. Each state generally imposes a production or severance tax with
respect to production and sale of crude oil, natural gas and natural gas liquids
within their respective jurisdictions. The regulatory burden on the oil and gas
industry increases the Company's costs of doing business and, consequently,
affects its profitability. Inasmuch as such laws and regulations are frequently
 
                                       51
<PAGE>   55
 
expanded, amended and reinterpreted, the Company is unable to predict the future
cost or impact of complying with such regulations.
 
     FEDERAL REGULATION OF SALES AND TRANSPORTATION OF NATURAL GAS. Federal
legislation and regulatory controls in the U.S. have historically affected the
price of the natural gas produced by the Company and the manner in which such
production is marketed. The Federal Energy Regulatory Commission (the "FERC")
regulates the interstate transportation and sale for resale of natural gas by
interstate and intrastate pipelines. The FERC previously regulated the maximum
selling prices of certain categories of gas sold in "first sales" in interstate
and intrastate commerce under the Natural Gas Policy Act. Effective January 1,
1993, however, the Natural Gas Wellhead Decontrol Act (the "Decontrol Act")
deregulated natural gas prices for all "first sales" of natural gas, which
includes all sales by the Company of its own production. As a result, all sales
of the Company's domestically produced natural gas may be sold at market prices,
unless otherwise committed by contract. The FERC's jurisdiction over natural gas
transportation and gas sales other than first sales was unaffected by the
Decontrol Act.
 
     The Company's natural gas sales are affected by the regulation of
intrastate and interstate gas transportation. In an attempt to restructure the
interstate pipeline industry with the goal of providing enhanced access to, and
competition among, alternative natural gas supplies, the FERC, commencing in
April 1992, issued Order Nos. 636, 636-A and 636-B ("Order No. 636") which have
altered significantly the interstate transportation and sale of natural gas.
Among other things, Order No. 636 required interstate pipelines to unbundle the
various services that they had provided in the past, such as sales, transmission
and storage, and to offer these services individually to their customers. By
requiring interstate pipelines to "unbundle" their services and to provide their
customers with direct access to pipeline capacity held by them, Order No. 636
has enabled pipeline customers to choose the levels of transportation and
storage service they require, as well as to purchase natural gas directly from
third-party merchants other than the pipelines and obtain transportation of such
gas on a non-discriminatory basis. The effect of Order No. 636 has been to
enable the Company to market its natural gas production to a wider variety of
potential purchasers. The Company believes that these changes generally have
improved the Company's access to transportation and have enhanced the
marketability of its natural gas production. To date, Order No. 636 has not had
any material adverse effect on the Company's ability to market and transport its
natural gas production. However, the Company cannot predict what new regulations
may be adopted by the FERC and other regulatory authorities, or what effect
subsequent regulations may have on the Company's activities. In addition, Order
No. 636 and a number of related orders were appealed. Recently, the United
States Court of Appeals for the District of Columbia Circuit issued an opinion
largely upholding the basic features and provision of Order No. 636. However,
even though Order No. 636 itself has been judicially approved, several related
FERC orders remain subject to pending appellate review and further changes could
occur as a result of court order or at the FERC's own initiative.
 
     In recent years the FERC also has pursued a number of other important
policy initiatives which could significantly affect the marketing of natural
gas. Some of the more notable of these regulatory initiatives include (i) a
series of orders in individual pipeline proceedings articulating a policy of
generally approving the voluntary divestiture of interstate natural gas
pipeline-owned gathering facilities to pipeline affiliates, (ii) the completion
of a rulemaking involving the regulation of interstate natural gas pipelines
with marketing affiliates under Order No. 497, (iii) FERC's on-going efforts to
promulgate standards for pipeline electronic bulletin boards and electronic data
exchange, (iv) a generic inquiry into the pricing of interstate pipeline
capacity, (v) efforts to refine FERC's regulations controlling the operation of
the secondary market for released interstate natural gas pipeline capacity, and
(vi) a policy statement regarding market-based rates and other non-cost-based
rates for interstate pipeline transmission and storage capacity. Several of
these initiatives are intended to enhance competition in natural gas markets.
While any resulting FERC action would affect the Company only indirectly, the
ongoing, or, in some instances, preliminary evolving nature of these regulatory
initiatives makes it impossible at this time to predict their ultimate impact
upon the Company's activities.
 
     OIL PRICE CONTROLS AND TRANSPORTATION RATES. Sales of crude oil, condensate
and gas liquids by the Company are not currently regulated and are made at
market prices. Commencing in October 1993, the FERC has modified its regulation
of oil pipeline rates and services in order to comply with the Energy Policy
 
                                       52
<PAGE>   56
 
Act of 1992. That Act mandated that FERC streamline oil pipeline ratemaking by
abandoning its old, cumbersome procedures and issue new procedures to be
effective January 1, 1995. In response, the FERC issued a series of rules (Order
Nos. 561 and 561-A) establishing an indexing system under which oil pipelines
will be able to change their transportation rates, subject to prescribed ceiling
levels. The FERC's new oil pipeline ratemaking methodology was recently affirmed
by the Court. The Company is not able at this time to predict the effects of
Order Nos. 561 and 561-A, if any, on the transportation costs associated with
oil production from the Company's oil producing operations.
 
     GATHERING REGULATIONS. Under the Natural Gas Act (the "NGA"), facilities
used for and operations involving the production and gathering of natural gas
are exempt from FERC jurisdiction, while facilities used for and operations
involving interstate transmission are not. Under current law even facilities
which otherwise would have been classified as gathering may be subject to the
FERC's rate and service jurisdiction when owned by an interstate pipeline
company and when such regulation is necessary in order to effectuate FERC's
Order No. 636 open-access initiatives. FERC has reaffirmed that it does not have
jurisdiction over natural gas gathering facilities and services and that such
facilities and services are properly regulated by state authorities. As a
result, natural gas gathering may receive greater regulatory scrutiny by state
agencies. In addition, the FERC has approved several transfers by interstate
pipelines of gathering facilities to unregulated gathering companies, including
affiliates. This could allow such companies to compete more effectively with
independent gatherers.
 
     State regulation of gathering facilities generally includes various safety,
environmental and, in some circumstances, nondiscriminatory take requirements.
While some states provide for the rate regulation of pipelines engaged in the
intrastate transportation of natural gas, such regulation has not generally been
applied against gatherers of natural gas. Natural gas gathering may receive
greater regulatory scrutiny following the pipeline industry restructuring under
Order No. 636. Thus the Company's gathering operations could be adversely
affected should they be subject in the future to the application of state or
federal regulation of rates and services. See "Risk Factors -- Governmental and
Environmental Regulation."
 
     ENVIRONMENTAL REGULATIONS. The Company's operations are subject to numerous
laws and regulations governing the discharge of materials into the environment
or otherwise relating to environmental protection. Public interest in the
protection of the environment has increased dramatically in recent years. The
trend of more expansive and stricter environmental legislation and regulations
could continue. To the extent laws are enacted or other governmental action is
taken that restricts drilling or imposes environmental protection requirements
that result in increased costs to the oil and gas industry in general, the
business and prospects of the Company could be adversely affected.
 
     The EPA and various state agencies have limited the approved methods of
disposal for certain hazardous and nonhazardous wastes. Certain wastes generated
by the Company's oil and natural gas operations that are currently exempt from
treatment as "hazardous wastes" may in the future be designated as "hazardous
wastes," and therefore be subject to more rigorous and costly operating and
disposal requirements.
 
     The Company currently owns or leases numerous properties that for many
years have been used for the exploration and production of oil and gas. Most of
these properties have been operated by prior owners, operators and third parties
whose treatment and disposal or release of hydrocarbons or other wastes was not
under the Company's control. These properties and the wastes disposed thereon
may be subject to Comprehensive Environmental Response, Compensation, and
Liability Act ("CERCLA"), Federal Resource Conservation and Recovery Act and
analogous state laws. Under such laws, the Company could be required to remove
or remediate previously disposed wastes (including wastes disposed of or
released by prior owners or operators) or property contamination (including
groundwater contamination) or to perform remedial plugging operations to prevent
future contamination.
 
     The Company's operations may be subject to the Clean Air Act ("CAA") and
comparable state and local requirements. Certain provisions of CAA may result in
the gradual imposition of certain pollution control requirements with respect to
air emissions from the operations of the Company. The EPA and states have been
developing regulations to implement these requirements. The Company may be
required to incur certain capital expenditures in the next several years for air
pollution control equipment in connection with
 
                                       53
<PAGE>   57
 
maintaining or obtaining operating permits and approvals addressing other air
emission-related issues. However, the Company does not believe its operations
will be materially adversely affected by any such requirements.
 
     Federal regulations require certain owners or operators of facilities that
store or otherwise handle oil, such as the Company, to prepare and implement
spill prevention, control, countermeasure and response plans relating to the
possible discharge of oil into surface waters. The Oil Pollution Act of 1990
("OPA") contains numerous requirements relating to the prevention of and
response to oil spills into waters of the United States. The OPA subjects owners
of facilities to strict joint and several liability for all containment and
cleanup costs and certain other damages arising from a spill, including but not
limited to, the costs of responding to a release of oil to surface waters.
Regulations are currently being developed under the OPA and state laws
concerning oil pollution prevention and other matters that may impose additional
regulatory burdens on the Company.
 
     The Resource Conservation and Recovery Act ("RCRA") is the principal
federal statute governing the treatment, storage and disposal of hazardous
wastes. RCRA imposes stringent operating requirements (and liability for failure
to meet such requirements) on a person who is either a "generator" or
"transporter" of hazardous waste or an "owner" or "operator" of a hazardous
waste treatment, storage or disposal facility. At present, RCRA includes a
statutory exemption that allows most crude oil and natural gas exploration and
production wastes to be classified as nonhazardous waste. A similar exemption is
contained in many of the state counterparts to RCRA. At various times in the
past, proposals have been made to amend RCRA and various state statutes to
rescind the exemption that excludes crude oil and natural gas exploration and
production wastes from regulation as hazardous waste under such statutes. Repeal
or modification of this exemption by administrative, legislative or judicial
process, or through changes in applicable state statutes, would increase the
volume of hazardous waste to be managed and disposed of by the Company.
Hazardous wastes are subject to more rigorous and costly disposal requirements
than are non-hazardous wastes. Any such change in the applicable statues may
require the Company to make additional capital expenditures or incur increased
operating expenses.
 
     Some states have enacted statutes governing the handling, treatment,
storage and disposal of naturally occurring radioactive material ("NORM"). NORM
is present in varying concentrations in subsurface and hydrocarbon reservoirs
around the world and may be concentrated in scale, film and sludge in equipment
that comes in contact with crude oil and natural gas production and processing
streams. Mississippi legislation prohibits the transfer of property for
residential or other unrestricted use if the property contains NORM above
prescribed levels.
 
     The Company also is subject to a variety of federal, state and local
permitting and registration requirements relating to the protection of the
environment. Management believes that the Company is in substantial compliance
with current applicable environmental laws and regulations and that continued
compliance with existing requirements will not have a material adverse impact on
the Company. See "Risk Factors -- Governmental and Environmental Regulation."
 
TAXATION
 
     Since all of the Company's oil and natural gas operations are located in
the United States, the Company's primary tax concerns relate to U.S. tax laws,
rather than Canadian tax laws. Certain provisions of the United States Internal
Revenue Code of 1986, as amended, are applicable to the petroleum industry.
Current law permits the Company to deduct currently, rather than capitalize,
intangible drilling and development costs ("IDC") incurred or borne by it. The
Company, as an independent producer, is also entitled to a deduction for
percentage depletion with respect to the first 1,000 barrels per day of domestic
crude oil (and/or equivalent units of domestic natural gas) produced by the
Company (if such percentage of depletion exceeds cost depletion). Generally,
this deduction is 15% of gross income from an oil and natural gas property,
without reference to the taxpayer's basis in the property. Percentage depletion
can not exceed the taxable income from any property (computed without allowance
for depletion), and is limited in the aggregate to 65% of the Company's taxable
income. Any depletion disallowed under the 65% limitation, however, may be
carried over indefinitely. For additional tax disclosures, see Note 4 of the
Consolidated Financial Statements.
 
                                       54
<PAGE>   58
 
                                   MANAGEMENT
 
     The names of the directors and officers of the Company, their ages, the
offices held by them with the Company and the periods during which such offices
have been held are set forth below. Each officer and director holds office for
one year or until his death, resignation or removal or until his successor is
duly elected and qualified. The officers set forth below hold the same position
in both DRI and DMI unless otherwise noted.
 
   
<TABLE>
<CAPTION>
                    NAME                      AGE                  POSITION(S)
                    ----                      ---                  -----------
<S>                                           <C>   <C>
Ronald G. Greene(a)(b)(c)(d)................  48    Chairman of the Board of DRI
Wilmot L. Matthews(a).......................  61    Director of DRI
William S. Price, III(b)(c)(d)..............  40    Director of DRI
David M. Stanton............................  34    Director of DRI
Wieland F. Wettstein(a).....................  47    Director of DRI
David Bonderman.............................  54    Director of DRI
Gareth Roberts..............................  45    President, Chief Executive Officer and
                                                    Director of DRI and DMI
Matthew Deso................................  44    Vice President, Exploration and Director
                                                    of DMI
Phil Rykhoek................................  41    Chief Financial Officer and Secretary and
                                                    Director of DMI
Mark A. Worthey.............................  40    Vice President, Operations and Director of
                                                    DMI
Bobby J. Bishop.............................  37    Controller and Chief Accounting Officer
Ron Gramling................................  52    President of DMI marketing subsidiary
Lynda Perrard...............................  54    Vice President, Land of DMI
</TABLE>
    
 
- ---------------
 
(a) Member of the Audit Committee.
 
(b) Member of the Compensation Committee.
 
(c) Member of the Stock Option Plan Committee.
 
(d) Member of the Stock Purchase Plan Committee.
 
     Ronald G. Greene is the Chairman of the Board, and has been a director of
the Company since 1995. Mr. Greene is the founder and Chairman of the Board of
Renaissance Energy Ltd. and was Chief Executive Officer of Renaissance from its
inception in 1974 until May 1990. He is also the sole shareholder, officer and
director of Tortuga Investment Corp., a private investment company. Mr. Greene
also serves on the Board of Directors of a private Western Canadian airline.
 
     Wilmot L. Matthews was first elected as director of the Company on December
9, 1997. Mr. Matthews, a Chartered Accountant, has been involved in all aspects
of investment banking by serving in various positions with Nesbitt Burns Inc.
and its predecessor companies from 1964 until his retirement in September 1996,
most recently as Vice Chairman and Director. Mr. Matthews is currently President
of Marjad Inc., a personal investment company, and also serves on the Board of
Directors of Renaissance Energy Ltd. and several private companies.
 
   
     William S. Price, III has been a director of the Company since 1995. Mr.
Price is a co-founder and principal of TPG. Prior to forming TPG in 1992, Mr.
Price was vice-president of strategic planning and business development for G.E.
Capital, and from 1985 to 1991 was employed by the management consulting firm of
Bain & Company, attaining officer status and acting as co-head of the Financial
Services practice. Mr. Price is Chairman of the Board of Favorite Brands
International, Inc. and Co-Chairman of the Board of Beringer Wine Estates. Mr.
Price also serves on the Board of Directors of Continental Airlines, Inc.,
Continental Micronesia, Inc., VSP Holdings, Inc., Belden & Blake Corporation and
Del Monte Foods.
    
 
                                       55
<PAGE>   59
 
     David M. Stanton has been a director of the Company since 1995. Mr. Stanton
is a managing director of TPG. From 1991 until he joined TPG in 1994, Mr.
Stanton was a venture capitalist with Trinity Ventures where he specialized in
information technology, software and telecommunications investments. Mr. Stanton
also serves on the Board of Directors of TPG Communications, Inc., Paradyne
Partners, L.P. and Belden & Blake Corporation.
 
     Wieland F. Wettstein has been a director of the Company since 1990. Mr.
Wettstein is the Executive Vice President of, and indirectly controls 50% of,
Finex Financial Corporation Ltd., a merchant banking company in Calgary,
Alberta, a position he has held for more than five years. Mr. Wettstein serves
on the Board of Directors of a public oil and natural gas company, BXL Energy,
and on the Board of Directors of a private technology firm.
 
   
     David Bonderman has been a director of the Company since 1996. Mr.
Bonderman is a co-founder and principal of TPG. Prior to forming TPG in 1992,
Mr. Bonderman was the Chief Operating Officer of the Robert M. Bass Group, Inc.
(now doing business as Keystone, Inc.), joining them in 1983. Keystone, Inc. is
the personal investment vehicle of Fort Worth, Texas-based investor Robert M.
Bass. Mr. Bonderman serves on the boards of Continental Airlines; Inc.; Beringer
Wine Estates; Credicom Asia; Bell & Howell Company; Ryanair, Limited; Virgin
Cinemas, Limited; Ducati Motors S.P.A.; and Washington Mutual, Inc.
    
 
     Gareth Roberts -- President, Chief Executive Officer and a Director, is the
founder of DMI, which was founded in April 1990. Mr. Roberts has more than 20
years of experience in the exploration and development of oil and natural gas
properties with Texaco, Inc., Murphy Oil Corporation and Coho Resources, Inc.
His expertise is particularly focused in the Gulf Coast region where he
specializes in the acquisition and development of old fields with low
productivity. Mr. Roberts holds honors and masters degrees in Geology and
Geophysics from St. Edmund Hall, Oxford University. Mr. Roberts also serves on
the Board of Directors of Belden & Blake Corporation.
 
     Matthew Deso -- Vice President, Exploration, has been with the Company
since October 1990, first as a consultant then, when he moved to Dallas in
January 1994, as Vice President of Exploration, his current position. Mr. Deso
has twenty years of petroleum geology experience, and received a Bachelor of
Science in Geosciences from the University of Texas in 1976. Mr. Deso also
worked for Enserch Exploration (three years), Terra Resources (three years) and
TXO Production Corp. (eight years) in positions of varying responsibility.
 
     Phil Rykhoek -- Chief Financial Officer, a Certified Public Accountant,
joined the Company and was appointed to the position of Chief Financial Officer
and Secretary in June 1995. Prior to joining the Company, Mr. Rykhoek was
Executive Vice President and co-founder of Petroleum Financial, Inc., a private
company formed in May 1991 to provide oil and natural gas accounting services on
a contract basis to other entities. From 1982 to 1991 (except for 1986), Mr.
Rykhoek was employed by Amerac Energy Corporation (formerly Wolverine
Exploration Company), most recently as Vice President and Chief Accounting
Officer. He retained his officer status during his tenure at Petroleum
Financial, Inc.
 
     Mark A. Worthey -- Vice President, Operations, is a geologist and is
responsible for all aspects of operations in the field. He joined the Company in
September 1992. Previously, he was with Coho Resources, Inc. as an exploitation
manager, beginning his employment there in 1985. Mr. Worthey graduated from
Mississippi State University with a Bachelor of Science degree in petroleum
geology in 1984.
 
     Bobby J. Bishop -- Controller and Chief Accounting Officer, a Certified
Public Accountant, joined the Company as Controller in August 1993 and was
appointed to the position of Chief Accounting Officer in December, 1997. Prior
to joining the Company, Mr. Bishop was the Chief Financial Officer for Arcadia
Exploration and Production Company, a private company. He also worked for Lake
Ronel Oil Company and TXO Production Corp. Mr. Bishop graduated from the
University of Oklahoma with a Bachelor of Business Administration in Accounting
in 1983.
 
     Ron Gramling -- President of DRI's marketing subsidiary, joined the Company
in May 1996 when the Company purchased the subsidiary's assets. Prior to
becoming affiliated with the Company, he was employed by Hadson Gas Systems as
Vice President of term supply. Mr. Gramling has 27 years of marketing,
 
                                       56
<PAGE>   60
 
transportation and supply experience in the natural gas and crude oil industry.
He received his Bachelor of Business Administration degree from Central State
University, Edmond, Oklahoma in 1970.
 
     Lynda Perrard -- Vice President, Land of DMI, joined the Company in April
1994. Ms. Perrard has over 30 years of experience in the oil and gas industry as
a petroleum landman. Prior to joining the Company, Ms. Perrard was the President
and Chief Executive Officer of Perrard Snyder, Inc., a corporation performing
contract land services. Ms. Perrard also served as Vice President, Land for
Snyder Exploration Company from 1986 to 1991.
 
     As part of the Securities Purchase Agreement that governed the TPG's
initial investment in the Company, TPG has the right to designate three of seven
nominees to serve on the Board of Directors of the Company. It was also intended
by the parties to the agreement that Mr. Ronald G. Greene would be nominated to
serve as one of the seven directors and that the remaining three directors would
be nominated by the Company. TPG will forfeit its right to designate one of the
directors that it would otherwise be entitled to designate if at any time TPG
owns securities of the Company representing less than 30% of the outstanding
Common Shares, calculated on a fully-diluted basis. TPG shall forfeit its right
to designate any director if at any time TPG's share holdings represent less
than 20% of the outstanding Common Shares, calculated on a fully-diluted basis.
Currently, Messrs. Stanton, Bonderman and Price are the directors of the Company
nominated by TPG.
 
                                       57
<PAGE>   61
 
                             PRINCIPAL SHAREHOLDERS
 
   
     The following table sets forth information, as of December 31, 1997,
concerning beneficial ownership of the Common Shares before and after giving
effect to the Transactions for: (i) any shareholders known to the Company to
beneficially own more than 5% of the issued and outstanding Common Shares; and
(ii) all executive officers and directors individually and as a group. Except as
otherwise indicated and except for those Common Shares that are listed as being
beneficially owned by more than one shareholder, each shareholder identified in
the table has sole voting and investment power with respect to their Common
Shares.
    
 
   
<TABLE>
<CAPTION>
                                                                                   BENEFICIAL
                                                                                   OWNERSHIP
                                                   BENEFICIAL OWNERSHIP AS OF      AFTER THE
                                                       DECEMBER 31, 1997          TRANSACTIONS
                                                   --------------------------     ------------
      NAME AND ADDRESS OF BENEFICIAL OWNER            SHARES         PERCENT        PERCENT
      ------------------------------------         ------------     ---------     ------------
<S>                                                <C>              <C>           <C>
Ronald G. Greene.................................       900,900(a)      4.4%(a)       3.6%(a)
  Suite 700, 407 -- 2nd Street
  Calgary, Alberta T2P 2Y3
David Bonderman..................................     8,658,038(b)     41.2%(b)      34.6%(b)
  201 Main Street, Suite 2420
  Ft. Worth, TX 76102
Wilmot L. Matthews...............................       156,250(c)         *             *
  1 First Canadian Place, Suite 5101
  Toronto, ON M5X 1E3
William S. Price, III............................     8,411,038(d)     40.0%(d)      33.7%(d)
  600 California Street, Suite 1850
  San Francisco, CA 94108
David M. Stanton.................................         2,000(e)         *             *
Wieland F. Wettstein.............................        83,389(f)         *             *
Gareth Roberts...................................       498,302(g)      2.4%(g)       2.0%(g)
Phil Rykhoek.....................................         4,422(h)         *             *
Mark A. Worthey..................................        79,001(h)         *             *
Matthew Deso.....................................        25,801(h)         *             *
Bobby J. Bishop..................................         2,439            *             *
All of the executive officers and directors as a
  group (11 persons).............................    10,413,542(i)     49.3%(i)      41.2%(i)
TPG Advisors, Inc................................     8,408,038(j)     40.0%(j)      33.6%(j)
  201 Main Street, Suite 2420
  Ft. Worth, TX 76102
</TABLE>
    
 
- ---------------
 
 *     Less than 1%.
 
(a)  Includes 30,150 Common Shares held by Mr. Greene's spouse in her retirement
     plan, 900 shares held in trust for Mr. Greene's minor children and 520,833
     Common Shares held by Tortuga Investment Corp., which is solely owned by
     Mr. Greene.
 
   
(b)  Includes 250,000 Common Shares in a family partnership 100% controlled by
     Mr. Bonderman and 625,000 Common Share purchase warrants held by TPG which,
     for purposes of this disclosure, are assumed to be exercised. These
     warrants were exercised on January 20, 1998. Mr. Bonderman is a director,
     executive officer and shareholder of TPG Advisors, Inc., which is the
     general partner of TPG GenPar, L.P., which in turn is the general partner
     of both TPG Partners, L.P., and TPG Parallel I, L.P., which are the direct
     beneficial owners of the remaining securities attributed to Mr. Bonderman.
     Mr. Bonderman's beneficial ownership after the Transactions includes the
     Common Shares purchased by TPG in the TPG Purchase.
    
 
   
(c)  Includes 52,300 Common Shares held by a subsidiary of Marjad Inc., which is
     wholly owned by Mr. Matthews, 2,450 Common Shares held in various trusts of
     which Mr. Matthews is a trustee and an
    
 
                                       58
<PAGE>   62
 
     income beneficiary and 1,500 Common Shares as to which Mr. Matthews holds a
     power of attorney but no beneficial interest.
 
   
(d)  Includes 1,000 Common Shares held by Mr. Price and 2,000 Common Shares held
     by Mr. Price's spouse and 625,000 Common Share purchase warrants held by
     TPG which, for purposes of this disclosure, are assumed to be exercised.
     These warrants were exercised on January 20, 1998. Mr. Price is a director,
     executive officer and shareholder of TPG Advisors, Inc., which is the
     general partner of TPG GenPar, L.P., which in turn is the general partner
     of both TPG Partners, L.P., and TPG Parallel I, L.P., which are the direct
     beneficial owners of the remaining securities attributed to Mr. Price. Mr.
     Price's beneficial ownership after the Transactions includes the Common
     Shares purchased by TPG in the TPG Purchase.
    
 
(e)  Although Mr. Stanton is not considered to be a "beneficial owner" as that
     term is defined by the Commission, Mr. Stanton is a managing director of
     TPG.
 
(f)  Includes 76,439 Common Shares held by S.P. Hunt Holdings Ltd., which is
     solely owned by a trust of which Mr. Wettstein is a trustee.
 
   
(g)  Includes 138,330 Common Shares held by a corporation, which is solely owned
     by Mr. Roberts, 38,000 Common Shares held in a private charitable
     foundation which he and his wife control, and 2,228 Common Shares held by
     his wife.
    
 
   
(h)  Includes 1,875, 73,250 and 17,500 Common Shares which Mr. Rykhoek, Mr.
     Worthey and Mr. Deso, respectively, have the right to acquire pursuant to
     stock options which are currently vested or which vest within 60 days of
     December 31, 1997.
    
 
   
(i)   Includes 92,625 Common Shares which the officers and directors as a group
      have the right to acquire pursuant to stock options which are currently
      vested or which vest within 60 days of December 31, 1997 and 625,000
      Common Share purchase warrants held by TPG which, for purposes of this
      disclosure, are assumed to be exercised. These warrants were exercised on
      January 20, 1998. Beneficial ownership does include the Common Shares held
      by affiliates of TPG, although Mr. Price and Mr. Bonderman, who are
      directors of the Company, are not the owners of record of these
      securities. Mr. Price and Mr. Bonderman are directors, executive officers
      and shareholders of TPG Advisors, Inc., which is the general partner of
      TPG GenPar, L.P., which in turn is the general partner of both TPG
      Partners, L.P. and TPG Parallel I, L.P., which are the direct beneficial
      owners of these securities. The beneficial ownership after the
      Transactions of the directors and executive officers as a group includes
      the Common Shares purchased by TPG in the TPG Purchase.
    
 
   
(j)   Includes 625,000 Common Share purchase warrants held by TPG which, for
      purposes of this disclosure, are assumed to be exercised. These warrants
      were exercised on January 20, 1998.
    
 
                                       59
<PAGE>   63
 
                INTERESTS OF MANAGEMENT IN CERTAIN TRANSACTIONS
 
     Other than as described in the paragraphs that follow, there are no
material interests, direct or indirect, of any director, officer or any
shareholder of the Company who beneficially owns, directly or indirectly, or
exercises control or direction over more than 5% of the outstanding Common
Shares, or any known family member, associate or affiliate of such persons,
participating in any transaction within the last three years or in any proposed
transaction that has materially affected or would materially affect the Company,
or any of its subsidiaries. The Company believes that the terms of the
transactions described below were as favorable to the Company as terms that
reasonably could have been obtained from non-affiliated third parties.
 
TPG INVESTMENTS
 
   
     In December 1995, the Company closed a $40.0 million private placement of
securities with partnerships that are affiliated with TPG (the "TPG Placement").
The TPG Placement was comprised of: (i) 4.2 million Common Shares issued at
$5.85 per share; (ii) 625,000 warrants at a price of $1.00 per warrant,
entitling the holders thereof to purchase 625,000 Common Shares at $7.40 per
share; and (iii) 1.5 million shares of $10 stated value Convertible First
Preferred Shares, Series A (the "Convertible Preferred"). The shareholders of
the Company at a Special Meeting on October 9, 1996 approved a resolution to
amend the terms of the Convertible Preferred to allow the Company to require a
conversion of the Convertible Preferred at any time. All of the Convertible
Preferred shares were converted into 2,816,372 Common Shares on October 30,
1996. As per the terms of the warrants, the Company is allowed to force
conversion of the warrants after December 21, 1997 if the price of the Common
Shares exceeds $10.00 per share for a period of 40 consecutive trading days. As
of December 31, 1997, TPG is the beneficial owner of 7,783,038 Common Shares,
which represents 38% of the outstanding Common Shares (40% after the exercise of
the warrants on January 20, 1998).
    
 
   
     In connection with the TPG Placement, TPG received the right to nominate
three of the directors of the Company out of a maximum of seven. Of the current
directors, Messrs. Bonderman, Price and Stanton were nominated by TPG. See
"Management." In addition, until December 21, 1997, TPG had certain "piggyback"
registration rights which allowed TPG to include all or part of the Common
Shares acquired by TPG in any registration statement of the Company during that
period. Commencing December 21, 1997 and until December 21, 2000, TPG may
request and receive one demand registration whereby TPG may make a written
request to the Company for registration under the Securities Act of the Common
Shares acquired by TPG. Finally, the agreement provides that TPG shall have the
right, but not the obligation, to maintain its pro rata ownership interest in
the equity securities of the Company, in the event that the Company issues any
additional equity securities or securities convertible into Common Shares of the
Company, by purchasing additional securities of the Company on the same terms
and conditions. This right, however, expires should TPG's share holdings
represent less than 20% of the outstanding Common Shares calculated on a
fully-diluted basis. At the request of the NYSE, the Company has agreed to make
the extension of this right subject to shareholder ratification every five years
with the first vote on the matter expected to be at the annual meeting in the
year 2000. TPG waived its right to maintain its pro rata ownership with regard
to the public offering by the Company in October 1996, but did purchase 800,000
Common Shares included in the offering directly from the Company. These Common
Shares were sold for 93.5% of the public offering price, or the same net price
that the remainder of the shares included in the offering were being sold to the
underwriters. TPG has waived its right to maintain its pro rata ownership with
regard to the Equity Offering but is planning to purchase 290,000 shares in the
TPG Purchase at        % of the public offering price, or the same net price
that the remainder of the shares included in the Equity Offering are being sold
to the Underwriters. As of December 31, 1997, after giving pro forma effect to
the Transactions, TPG will be the beneficial owner of 8,698,038 Common Shares,
which represents 34% of the outstanding Common Shares.
    
 
   
     In 1995, the Company issued 333,333 Common Shares to Tortuga Investment
Corp. as a financial advisory fee for its services in connection with the TPG
Placement. Tortuga Investment Corp. is a corporation wholly owned by Mr. Ronald
Greene, currently Chairman of the Board of Directors of the Company. Mr. Greene
was not a director of the Company, nor had he held any director or officer
position with the Company, prior to the time of the issuance of such Common
Shares.
    
 
                                       60
<PAGE>   64
 
MODIFICATION OF DEBENTURES
 
   
     In addition to modifying the terms of the Convertible Preferred at the
special meeting of the shareholders on October 9, 1996, the shareholders
approved the issuance of 7,948 Common Shares in lieu of interest, plus an
additional 308,642 Common Shares to redeem the principal amount of the
outstanding 9.5% Convertible Debentures (the "Debentures") in accordance with
their existing terms. Mr. Ronald G. Greene, Chairman of the Board of Directors,
owned 80% of the Debentures, which were purchased by him at market value prior
to his election to the Board of Directors. These Debentures were redeemed on
October 15, 1996. Mr. Greene also purchased C $1,500,000 of 6 3/4% Convertible
Debentures at market value prior to his election to the Board of Directors that
were converted into 187,500 Common Shares on July 31, 1996 in accordance with
the terms of the 6 3/4% Convertible Debentures.
    
 
PURCHASE OF WORKING INTERESTS
 
     In May 1996, the Company purchased oil and natural gas working interests
from four employees for an aggregate consideration of $387,000, which included
$158,000 paid to Mr. Matthew Deso, Vice President of Exploration of the Company,
$133,000 paid to Mr. Mark Worthey, Vice President of Operations of the Company
and $26,000 paid to the spouse of Mr. Gareth Roberts, President and Chief
Executive Officer of the Company. The purchase prices were determined by the
Company based on the present value of the estimated future net revenue to be
generated from the estimated proved reserves of the properties (based on the
prior year's report thereon from Netherland & Sewell) using a 15% discount rate.
The acquisitions were for additional working interests in properties in which
the Company also holds an interest. To the best of the Company's knowledge, none
of the Company's officers or directors have any remaining interests in
properties owned by the Company.
 
                        [E] DESCRIPTION OF CAPITAL STOCK
 
GENERAL
 
   
     The authorized share capital of DRI consists of an unlimited number of
Common Shares, of which 20,386,683 were issued and outstanding as of December
31, 1997, and two classes of preferred shares, unlimited in number and issuable
in series, none of which is outstanding. In addition to the issued and
outstanding Common Shares, options to purchase 1,550,256 Common Shares and
700,000 warrants were outstanding as of December 31, 1997. An additional 406,620
stock options were granted on January 2, 1998.
    
 
     There are no limitations imposed by Canadian legislation or regulations or
by the Articles of Continuance or Bylaws of DRI on the right of holders of
either the Common Shares or the Common Share Purchase Warrants who are not
residents of Canada to hold or vote the Common Shares or to hold the Common
Share Purchase Warrants.
 
COMMON SHARES
 
     The holders of the Common Shares are entitled: (i) to one vote for each
Common Share held at all meetings of shareholders of DRI, other than meetings of
the holders of any other class of shares meeting as a class or the holders of
one or more series of any class of shares meeting as a series; (ii) to any
dividends that may be declared by the Board of Directors thereon; and (iii) in
the event of liquidation, dissolution or winding-up of DRI, are entitled,
subject to the rights of the holders of shares ranking prior to the Common
Shares, to share rateably in such assets of DRI as are available for
distribution. The holders of Common Shares have no pre-emptive rights under
Canadian law or the Articles of Continuance.
 
   
     At December 31, 1997, 75,000 warrants were outstanding at an exercise price
of C$8.40 expiring on May 5, 2000 and 625,000 warrants were outstanding at an
exercise price of $7.40 expiring on December 21, 1999. The 625,000 warrants held
by TPG were exercised on January 20, 1998. Each warrant entitles the holder
thereof to purchase one Common Share at any time prior to the expiration date.
    
 
                                       61
<PAGE>   65
 
   
     DRI is also required to maintain a continuously effective registration
statement for a two-year period relating to the resale of 705,643 Common Shares,
including 75,000 Common Shares issuable upon the exercise of warrants, which
were issued in two private placements in April and May 1995. An effective
registration statement relating to this requirement is currently on file with
the Commission.
    
 
   
     DRI has granted TPG certain demand registration rights and preemptive
rights in connection with the TPG Placement. For a description of these rights,
see "Interests of Management in Certain Transactions." TPG has waived its rights
to maintain its pro rata ownership in connection with the Equity Offering
although they intend to buy 290,000 Common Shares concurrently with the Equity
Offering directly from the Company. These Common Shares will be sold to TPG for
          % of the public offering price, the same net price at which the
remainder of the Common Shares included in the Equity Offering are being sold to
the Underwriters.
    
 
PREFERRED SHARES
 
   
     DRI's Articles of Continuance authorize the future issuance of First
Preferred Shares and Second Preferred Shares (collectively, the "Preferred
Shares"), with such designations, rights, privileges, restrictions and
conditions as may be determined from time to time by the Board of Directors.
Accordingly, the Board of Directors is empowered, without shareholder approval,
to issue Preferred Shares with dividend, liquidation, conversion, voting or
other rights that could adversely affect the voting power or other rights of
holders of DRI's Common Shares. In the event of issuance, the Preferred Shares
could be utilized, under certain circumstances, as a method of discouraging,
delaying or preventing a change in control of the Company. Such actions could
have the effect of discouraging bids for DRI and, thereby, preventing
shareholders from receiving the maximum value for their shares. Although the
Company has no present intention to issue any additional Preferred Shares, there
can be no assurance that the Company will not do so in the future. There are no
Preferred Shares currently outstanding.
    
 
                      DESCRIPTION OF CERTAIN INDEBTEDNESS
 
CREDIT FACILITY
 
   
     Effective December 29, 1997, the Company restated its Credit Facility with
NationsBank of Texas, N.A., as Administrative Agent, and a syndicate of lenders
pursuant to an agreement (the "Credit Agreement") under which DMI is the
borrower from such lenders. The following is a summary of certain terms of the
Credit Facility and is qualified in its entirety by reference to the Credit
Agreement and the various related documents entered into in connection with the
Credit Facility.
    
 
   
     The total commitment under the Credit Facility is $300.0 million, subject
to borrowing base availability. The initial borrowing base under the Credit
Facility is $260.0 million, $95.0 million of which consists of an interim
acquisition financing commitment (the "Acquisition Tranche"). The initial
borrowing base of $260 million will be reduced simultaneously with the issuance
by the Company of any debt or equity securities by an amount equal to the net
proceeds from the issuance of such securities, until such time as the borrowing
base is reduced to the conforming borrowing base of $165.0 million. The interest
rate on the Credit Facility includes a premium so long as the Acquisition
Tranche is outstanding. Such premium is currently 0.25% and will increase 0.25%
each quarter, commencing March 31, 1998, through March 31, 1999 until the
Acquisition Tranche is repaid. The borrowing base in effect under the Credit
Agreement is subject to redetermination semi-annually, at the sole discretion of
the lenders. The borrowing base may be affected from time to time by the
performance of the Company's oil and natural gas properties and changes in oil
and natural gas prices, among other factors. The Company incurs a commitment fee
of up to 0.45% per year on the unused portion of the borrowing base.
    
 
   
     Borrowings under the Credit Facility are payable in full on December 29,
2002 and bear interest at the option of the Company at the bank's prime rate or,
depending on the percentage of the borrowing base that is outstanding, at rates
ranging from LIBOR plus  7/8% to LIBOR plus 1 3/8% (plus the applicable premium
in effect when the Acquisition Tranche is outstanding). As of December 31, 1997,
after giving effect to the
    
 
                                       62
<PAGE>   66
 
   
Transactions, the Company would have had a borrowing base of $165.0 million, of
which $130.0 million was available.
    
 
   
     The obligations of DMI as borrower under the Credit Facility will be fully
and unconditionally guaranteed by DRI, DMI's direct corporate parent. In
addition, the Credit Facility will be secured by first priority security
interests in certain oil and natural gas properties which secured the Company's
prior credit facility entered into on May 31, 1996 (excluding the properties
acquired in the Chevron Acquisition) and a pledge of all of the stock of DMI;
provided, however, that if the borrowings outstanding under the Credit Facility
exceed the borrowing base after redetermination on July 1, 1998, the Credit
Facility will be secured by substantially all of the Company's oil and natural
gas properties (including those acquired in the Chevron Acquisition).
    
 
     The Credit Facility contains certain covenants which, among other things,
restrict the Company's ability to pay dividends and other restricted payments,
incur additional indebtedness, create liens, enter into leases and investments
(including hedging investments), engage in mergers and consolidations or engage
in certain transactions with affiliates. In addition, the Company will be
required to comply with certain financial ratios and tests, including a minimum
tangible net worth test, a current ratio coverage test and an EBITDA to interest
ratio test.
 
[E] SENIOR SUBORDINATED NOTES
 
   
     Concurrently with the Equity Offering DMI is offering up to $125.0 million
aggregate principal amount of its   % Senior Subordinated Notes Due 2008
pursuant to the Debt Offering. The following is a summary of certain terms of
the Notes and is qualified in its entirely by reference to the Indenture (the
"Indenture") relating to the Notes. A copy of the proposed form of Indenture has
been filed with the Registration Statement of which this Prospectus forms a
part.
    
 
   
     The Notes will be unsecured senior subordinated obligations of DMI, and
will rank pari passu in right of payment with all existing and future senior
subordinated indebtedness of DMI and will be subordinated to future senior
indebtedness of the Company. The Notes mature on             , 2008. The Notes
will bear interest at the rate of      % per annum and will be payable
semi-annually, commencing on           . The Notes will be fully and
unconditionally guaranteed (the "DRI Guaranty") on a senior subordinated basis
by DRI. The indebtedness represented by the DRI Guaranty will be unsecured
senior subordinated obligations of DRI, and will rank pari passu in right of
payment with all existing and future senior subordinated indebtedness of DRI. In
addition, under certain circumstances, the Notes will in the future be fully and
unconditionally guaranteed on a senior subordinated basis by certain
subsidiaries of DMI.
    
 
   
     Except as stated below, the Notes will not be redeemable prior to
            , 2003. Thereafter, the Notes will be redeemable at the option of
DMI, in whole or in part, at any time or from time to time, at a premium which
will be at a fixed percentage that declines to par on or after             ,
2005, in each case together with accrued and unpaid interest, if any, to the
date of redemption. In the event the Company consummates a Stock Offering prior
to             , 2001, DMI may, at its option, use all or a portion of the
proceeds from such offering to redeem up to 35% of the original aggregate
principal amount of the Notes at a redemption price equal to      % of the
aggregate principal amount of the Notes to be redeemed, plus accrued and unpaid
interest, if any, thereon to the redemption date, provided at least $81.0
million aggregate principal amount of the Notes remains outstanding after each
such redemption.
    
 
     Upon the occurrence of a Change of Control (as defined in the Indenture),
each holder of Notes will have the right to require the Company to purchase all
or a portion of such holder's Notes at a price equal to 101% of the aggregate
principal amount thereof, together with accrued and unpaid interest to the date
of purchase.
 
   
     The Indenture will contain certain covenants, including covenants that
limit (i) indebtedness, (ii) restricted payments, (iii) distributions from
restricted subsidiaries, (iv) transactions with affiliates, (v) sales of assets
and subsidiary stock (including sale and leaseback transactions), (vi) dividend
and other payment restrictions affecting restricted subsidiaries, and (vii)
mergers or consolidations.
    
 
                                       63
<PAGE>   67
 
                          [D] DESCRIPTION OF THE NOTES
 
     As used in this section, the term "Company" shall mean DMI, the issuer of
the Notes.
 
GENERAL
 
   
     The Notes are to be issued under an Indenture, to be dated as of
  , 1998 (the "Indenture"), between the Company and Chase Bank of Texas,
National Association, as Trustee (the "Trustee"). A copy of the form of
Indenture will be filed as an exhibit to the Registration Statement of which
this Prospectus is a part. The following summary of certain provisions of the
Indenture does not purport to be complete and is subject to, and is qualified in
its entirety by reference to, the Indenture and the Notes, including the
definitions of certain terms therein and those terms made a part of the
Indenture by the Trust Indenture Act of 1939, as amended.
    
 
TERMS OF THE NOTES
 
   
     The Notes will be unsecured senior subordinated obligations of the Company,
initially limited to $125 million aggregate principal amount, and will mature on
            , 2008. The Notes will bear interest at the rate per annum shown on
the cover page hereof from             , 1998, or from the most recent date to
which interest has been paid or provided for, payable semiannually to Holders of
record at the close of business on the    or    immediately preceding the
interest payment date on    and   of each year, commencing             , 1998.
Interest on overdue principal and (to the extent permitted by law) on overdue
installments of interest will accrue at 1% per annum in excess of such rate.
Interest on the Notes will be computed on the basis of a 360-day year of twelve
30-day months.
    
 
     Principal of and interest on the Notes will be payable, and the Notes may
be exchanged or transferred, at the office or agency of the Company in the
Borough of Manhattan, The City of New York (which initially shall be the
corporate trust office of the Trustee, at        New York, New York      ,
except that, at the option of the Company, payment of interest may be made by
check mailed to the address of the Holders as such address appears in the Note
Register.
 
     The Notes will be issued only in fully registered form, without coupons, in
denominations of $1,000 and any integral multiple of $1,000. No service charge
shall be made for any registration of transfer or exchange of Notes, but the
Company may require payment of a sum sufficient to cover any transfer tax or
other similar governmental charge payable in connection therewith.
 
     Subject to the covenants described below under "-- Certain Covenants" and
applicable law, the Company may issue additional Notes under the Indenture in an
unlimited principal amount. The Notes offered hereby and any additional Notes
subsequently issued would be treated as a single class for all purposes under
the Indenture.
 
OPTIONAL REDEMPTION
 
     Except as set forth in the following paragraph, the Notes will not be
redeemable at the option of the Company prior to             , 2003. Thereafter,
the Notes will be redeemable, at the Company's option, in whole or in part, at
any time or from time to time, upon not less than 30 nor more than 60 days'
prior notice mailed by first-class mail to each Holder's registered address, at
the following redemption prices (expressed in percentages of principal amount),
plus accrued interest to the redemption date (subject to the right of Holders of
record on the relevant record date to receive interest due on the relevant
interest payment date), if redeemed during the 12-month period commencing on
of the years set forth below:
 
   
<TABLE>
<CAPTION>
                                                                     REDEMPTION
PERIOD                                                                 PRICE
- ------                                                               ----------
<S>    <C>                                                           <C>
 2003..............................................................            %
 2004..............................................................
 2005..............................................................
 2006 and thereafter...............................................     100.000
</TABLE>
    
 
                                       64
<PAGE>   68
 
   
     In addition, at any time and from time to time prior to             , 2001,
the Company may redeem in the aggregate up to 35% of the original principal
amount of the Notes with the proceeds of one or more Stock Offerings to the
extent the net cash proceeds thereof, in the case of a Stock Offering by DRI,
are contributed to the equity capital of the Company and so long as there is a
Public Market at the time of such redemption, at a redemption price (expressed
as a percentage of principal amount) of      % plus accrued interest to the
redemption date (subject to the right of Holders of record on the relevant
record date to receive interest due on the relevant interest payment date);
provided, however, that (i) either (A) at least $81.0 aggregate principal amount
of the Notes must remain outstanding after each such redemption or (B) such
redemption retires the Notes in their entirety and (ii) such redemption occurs
within 60 days following the closing of such Stock Offering.
    
 
     In the case of any partial redemption, selection of the Notes for
redemption will be made by the Trustee on a pro rata basis, by lot or by such
other method as the Trustee in its sole discretion shall deem to be fair and
appropriate, although no Note of $1,000 in original principal amount or less
shall be redeemed in part. If any Note is to be redeemed in part only, the
notice of redemption relating to such Note shall state the portion of the
principal amount thereof to be redeemed. A new Note in principal amount equal to
the unredeemed portion thereof will be issued in the name of the Holder thereof
upon cancellation of the original Note.
 
SINKING FUND
 
     There will be no sinking fund payments for the Notes.
 
   
GUARANTIES
    
 
   
     DRI, as primary obligor and not merely as surety, will irrevocably, fully
and unconditionally guarantee (the "DRI Guaranty") on a senior subordinated
basis the performance and the punctual payment when due, whether at Stated
Maturity, by acceleration or otherwise, of all the obligations of the Company
under the Indenture and the Notes. In addition, under the circumstances
described below under "-- Certain Covenants -- Future Subsidiary Guarantors,"
certain Restricted Subsidiaries, as primary obligor and not merely as surety,
will irrevocably, fully and unconditionally guarantee (each, a "Subsidiary
Guaranty") on a senior subordinated basis the performance and the punctual
payment when due, whether at Stated Maturity, by acceleration or otherwise, of
all the obligations of the Company under the Indenture and the Notes (all such
obligations guaranteed by DRI and any Subsidiary Guarantors being herein called
the "Guaranteed Obligations"). DRI is a holding company that will derive all of
its operating income and cash flow from its subsidiaries, including primarily
the Company, the common stock of which will be pledged to secure DRI's guarantee
of indebtedness of the Company outstanding under the Credit Facility. DRI has no
material assets other than the common stock of the Company. DRI and each
Subsidiary Guarantor (collectively, the "Guarantors") will agree to pay, in
addition to the amount stated above, any and all expenses (including reasonable
counsel fees and expenses) incurred by the Trustee and the Holders in enforcing
any rights under the Guaranty with respect to the Guarantor. Each Subsidiary
Guaranty will be limited in amount to an amount not to exceed the maximum amount
that can be guaranteed by the applicable Subsidiary Guarantor without rendering
the Subsidiary Guaranty, as it relates to such Subsidiary Guarantor, voidable
under applicable law relating to fraudulent conveyance or fraudulent transfer or
similar laws affecting the rights of creditors generally. If a Subsidiary
Guaranty were to be rendered voidable, it could be subordinated by a court to
all other indebtedness (including guarantees and other contingent liabilities)
of the applicable Subsidiary Guarantor, and depending on the amount of such
indebtedness, a Subsidiary Guarantor's liability on its Subsidiary Guaranty
could be reduced to zero. As of the Issue Date, none of the Company's
subsidiaries will be Subsidiary Guarantors.
    
 
   
     The DRI Guaranty is, and each Subsidiary Guaranty will be, a continuing
guarantee and shall (a) subject to certain limited exceptions, remain in full
force and effect until payment in full of all the Guaranteed Obligations, (b) be
binding upon the Guarantor and (c) enure to the benefit of and be enforceable by
the Trustee, the Holders and their successors, transferees and assigns.
    
 
                                       65
<PAGE>   69
 
   
     Pursuant to the Indenture, a Guarantor may consolidate with, merge with or
into, or transfer all or substantially all its assets to any other Person to the
extent described below under "-- Certain Covenants -- Merger and Consolidation";
provided, however, that if such Person is not the Company, the Guarantor's
obligations under the Indenture and its Guaranty must be expressly assumed by
such other Person. However, upon the sale or other disposition (including by way
of consolidation or merger) of a Subsidiary Guarantor or the sale or disposition
of all or substantially all the assets of a Subsidiary Guarantor (in each case
other than to the Company or an Affiliate of the Company), such Subsidiary
Guarantor will be released and relieved from all its obligations under its
Subsidiary Guaranty. See "-- Certain Covenants -- Merger and Consolidation."
    
 
RANKING
 
   
     The indebtedness evidenced by the Notes, the DRI Guaranty and any
Subsidiary Guaranty will be senior unsecured, general obligations of the
Company, DRI and the relevant Subsidiary Guarantor, as the case may be,
subordinated in right of payment, as set forth in the Indenture, to the prior
payment of all Senior Indebtedness of the Company or the relevant Guarantor, as
the case may be, whether outstanding on the Issue Date or thereafter incurred,
including the obligations of the Company under, and such Guarantor's guarantee,
if any, of the Company's obligations with respect to, the Credit Facility.
    
 
   
     As of September 30, 1997, after giving pro forma effect to the
Transactions, (i) the Senior Indebtedness of the Company would have been
approximately $17.0 million, all of which would have been secured indebtedness
and (ii) the Senior Indebtedness of DRI would have been approximately $17.0
million, all of which would have represented DRI's guarantee of Senior
Indebtedness of the Company under the Credit Facility. Although the Indenture
contains limitations on the amount of additional Indebtedness that the Company
and any Subsidiary Guarantor may incur, under certain circumstances the amount
of such Indebtedness could be substantial and, in any case, such Indebtedness
may be Senior Indebtedness. See "-- Certain Covenants -- Limitation on
Indebtedness."
    
 
   
     Only Indebtedness of the Company or a Guarantor that is Senior Indebtedness
will rank senior to the Notes and the relevant Guaranty in accordance with the
provisions of the Indenture. The Notes and each Guaranty will in all respects
rank pari passu with all other Senior Subordinated Indebtedness of the Company
and the relevant Guarantor, respectively. The Company and DRI each has agreed,
and each Subsidiary Guarantor will agree, in the Indenture that it will not
Incur, directly or indirectly, any Indebtedness that is subordinate or junior in
ranking in right of payment to its Senior Indebtedness unless such Indebtedness
is Senior Subordinated Indebtedness or is expressly subordinated in right of
payment to Senior Subordinated Indebtedness. Unsecured Indebtedness is not
deemed to be subordinated or junior to Secured Indebtedness merely because it is
unsecured.
    
 
   
     A portion of the operations of the Company are currently conducted through
its subsidiaries. Claims of creditors of any such subsidiaries, including trade
creditors, secured creditors and creditors holding guarantees issued by such
subsidiaries, and claims of preferred stockholders (if any) of such subsidiaries
generally will have priority with respect to the assets and earnings of such
subsidiaries over the claims of creditors of the Company, including holders of
the Notes, even though such obligations would not constitute Senior Indebtedness
of the Company. The Notes, therefore, will be effectively subordinated to
creditors (including trade creditors) and preferred stockholders (if any) of
subsidiaries of the Company (other than subsidiaries of the Company that are
Subsidiary Guarantors). Although the Indenture limits the incurrence of
Indebtedness and the issuance of preferred stock of certain of the Company's
subsidiaries, such limitation is subject to a number of significant
qualifications. Moreover, the Indenture does not impose any limitation on the
incurrence by such subsidiaries of liabilities that are not considered
Indebtedness under the Indenture. See "-- Certain Covenants -- Limitation on
Indebtedness."
    
 
   
     The Company may not pay principal of, premium (if any) or interest on, the
Notes or make any deposit pursuant to the provisions described under
"Defeasance" below or may not repurchase, redeem or otherwise retire any Notes
(collectively, "pay the Notes") if (i) any Designated Senior Indebtedness of the
Company is not paid when due or (ii) any other default on Designated Senior
Indebtedness of the Company occurs and the maturity of such Designated Senior
Indebtedness is accelerated in accordance with its terms unless, in
    
 
                                       66
<PAGE>   70
 
   
either case, the default has been cured or waived and any such acceleration has
been rescinded or such Designated Senior Indebtedness has been paid in full.
However, the Company may pay the Notes without regard to the foregoing if the
Company and the Trustee receive written notice approving such payment from the
Representative of the applicable Designated Senior Indebtedness with respect to
which either of the events set forth in clause (i) or (ii) of the immediately
preceding sentence has occurred and is continuing. During the continuance of any
default (other than a default described in clause (i) or (ii) of the second
preceding sentence) with respect to any Designated Senior Indebtedness of the
Company pursuant to which the maturity thereof may be accelerated immediately
without further notice (except such notice as may be required to effect such
acceleration) or the expiration of any applicable grace periods, the Company may
not pay the Notes for a period (a "Payment Blockage Period") commencing upon the
receipt by the Trustee (with a copy to the Company) of written notice (a
"Blockage Notice") of such default from the Representative of the holders of
such Designated Senior Indebtedness specifying an election to effect a Payment
Blockage Period and ending 179 days thereafter (or earlier if such Payment
Blockage Period is terminated (i) by written notice to the Trustee and the
Company from the Person or Persons who gave such Blockage Notice, (ii) because
the default giving rise to such Blockage Notice is no longer continuing or (iii)
because such Designated Senior Indebtedness has been repaid in full in cash).
Notwithstanding the provisions described in the immediately preceding sentence,
unless the holders of such Designated Senior Indebtedness or the Representative
of such holders have accelerated the maturity of such Designated Senior
Indebtedness, the Company must resume payments on the Notes after the end of
such Payment Blockage Period. The Notes shall not be subject to more than one
Payment Blockage Period in any consecutive 360-day period, irrespective of the
number of defaults with respect to Designated Senior Indebtedness of the Company
during such period.
    
 
   
     Upon any payment or distribution of the assets of the Company upon a total
or partial liquidation or dissolution or reorganization of or similar proceeding
relating to the Company or its property, the holders of Senior Indebtedness of
the Company will be entitled to receive payment in full in cash of such Senior
Indebtedness before the Noteholders are entitled to receive any payment in
respect of the Notes, and until such Senior Indebtedness is paid in full in
cash, any payment or distribution to which Noteholders would be entitled from
the Company but for the subordination provisions of the Indenture will be made
to holders of such Senior Indebtedness of the Company as their interests may
appear. If a distribution is made to Noteholders that, due to the subordination
provisions, should not have been made to them, such Noteholders are required to
hold it in trust for the holders of Senior Indebtedness of the Company and pay
it over to them as their interests may appear.
    
 
     If payment of the Notes is accelerated because of an Event of Default, the
Company or the Trustee shall promptly notify the holders of Designated Senior
Indebtedness of the Company or the Representative of such holders of the
acceleration.
 
   
     The obligations of DRI under the DRI Guaranty are, and the obligations of
any Subsidiary Guarantor under its Subsidiary Guaranty will be, unsecured senior
subordinated obligations. As such, the rights of Noteholders to receive payment
by a Guarantor pursuant to its Guaranty will be subordinated in right of payment
to the rights of holders of Senior Indebtedness of such Guarantor. The terms of
the subordination provisions described above with respect to the Company's
obligations under the Notes apply equally to DRI and any Subsidiary Guarantors
and the obligations of DRI and any such Subsidiary Guarantor under its
respective Guaranty.
    
 
   
     By reason of the subordination provisions contained in the Indenture, in
the event of insolvency, creditors of the Company or a Guarantor who are holders
of Senior Indebtedness of the Company or such Guarantor, as the case may be, may
recover more, ratably, than the Noteholders, and creditors of the Company or a
Guarantor who are not holders of Senior Indebtedness of the Company or such
Guarantor may recover less, ratably, than holders of Senior Indebtedness of the
Company or such Guarantor, as the case may be, and may recover more, ratably,
than the Noteholders.
    
 
     Notwithstanding the foregoing, payment from the money or the proceeds of
U.S. Government Obligations held in any defeasance trust described under
"-- Defeasance" below will not be contractually
 
                                       67
<PAGE>   71
 
subordinated in right of payment to any Senior Indebtedness of the Company or
subject to the restrictions described herein.
 
CERTAIN DEFINITIONS
 
     "Additional Assets" means (i) any property or assets (other than
Indebtedness and Capital Stock) in the Oil and Gas Business; (ii) the Capital
Stock of a Person that becomes a Restricted Subsidiary as a result of the
acquisition of such Capital Stock by the Company or another Restricted
Subsidiary; or (iii) Capital Stock constituting a minority interest in any
Person that at such time is a Restricted Subsidiary; provided, however, that any
such Restricted Subsidiary described in clauses (ii) or (iii) above is primarily
engaged in the Oil and Gas Business.
 
     "Adjusted Consolidated Assets" means at any time the total amount of assets
of the Company and its Restricted Subsidiaries (less applicable depreciation,
amortization and other valuation reserves), after deducting therefrom all
current liabilities of the Company and its Restricted Subsidiaries (excluding
intercompany items), all as set forth on the consolidated balance sheet of the
Company and its Restricted Subsidiaries as of the end of the most recent fiscal
quarter ended at least 45 days prior to the date of determination.
 
   
     "Adjusted Consolidated Net Tangible Assets" or "ACNTA" means (without
duplication), as of the date of determination, (a) the sum of (i) discounted
future net revenue from proved crude oil and natural gas reserves of the Company
and its Restricted Subsidiaries calculated in accordance with SEC guidelines
before any state or federal income taxes, as estimated in a reserve report
prepared as of the end of the Company's most recently completed fiscal year,
which reserve report is prepared or reviewed by independent petroleum engineers,
as increased by, as of the date of determination, the discounted future net
revenue of (A) estimated proved crude oil and natural gas reserves of the
Company and its Restricted Subsidiaries attributable to acquisitions consummated
since the date of such year-end reserve report, and (B) estimated crude oil and
natural gas reserves of the Company and its Restricted Subsidiaries attributable
to extensions, discoveries and other additions and upward determinations of
estimates of proved crude oil and natural gas reserves (including previously
estimated development costs incurred during the period and the accretion of
discount since the prior year end) due to exploration, development or
exploitation, production or other activities which reserves were not reflected
in such year-end reserve report which would, in the case of determinations made
pursuant to clauses (A) and (B), in accordance with standard industry practice,
result in such determinations, in each case calculated in accordance with SEC
guidelines (utilizing the prices utilized in such year-end reserve report), and
decreased by, as of the date of determination, the discounted future net revenue
attributable to (C) estimated proved crude oil and natural gas reserves of the
Company and its Restricted Subsidiaries reflected in such year-end reserve
report produced or disposed of since the date of such year-end reserve report
and (D) reductions in the estimated oil and gas reserves of the Company and its
Restricted Subsidiaries reflected in such year-end reserve report since the date
of such year-end reserve report attributable to downward determinations of
estimates of proved crude oil and natural gas reserves due to exploration,
development or exploitation, production or other activities conducted or
otherwise occurring since the date of such yearend reserve report which would,
in the case of determinations made pursuant to clauses (C) and (D), in
accordance with standard industry practice, result in such determinations, in
each case calculated in accordance with SEC guidelines (utilizing the prices
utilized in such year-end reserve report); provided, however, that, in the case
of each of the determinations made pursuant to clauses (A) through (D), such
increases and decreases shall be as estimated by the Company's engineers, except
that if as a result of such acquisitions, dispositions, discoveries, extensions
or revisions, there is a Material Change which is an increase, then such
increases and decreases in the discounted future net revenue shall be confirmed
in writing by an independent petroleum engineer, (ii) the capitalized costs that
are attributable to crude oil and natural gas properties of the Company and its
Restricted Subsidiaries to which no proved crude oil and natural gas reserves
are attributed, based on the Company's books and records as of a date no earlier
than the date of the Company's latest annual or quarterly financial statements,
(iii) the Net Working Capital on a date no earlier than the date of the
Company's latest annual or quarterly financial statements and (iv) the greater
of (I) the net book value on a date no earlier than the date of the Company's
latest annual or quarterly financial
    
 
                                       68
<PAGE>   72
 
   
statements and (II) the appraised value, as estimated by independent appraisers,
of other tangible assets of the Company and its Restricted Subsidiaries as of a
date no earlier than the date of the Company's latest audited financial
statements (provided that the Company shall not be required to obtain such an
appraisal of such assets if no such appraisal has been performed), minus (b) to
the extent not otherwise taken into account in the immediately preceding clause
(a), the sum of (i) minority interests, (ii) any natural gas balancing
liabilities of the Company and its Restricted Subsidiaries reflected in the
Company's latest audited financial statements, (iii) the discounted future net
revenue, calculated in accordance with SEC guidelines (utilizing the same prices
utilized in the Company's year-end reserve report), attributable to reserves
subject to participation interests, overriding royalty interests or other
interests of third parties, pursuant to participation, partnership, vendor
financing or other agreements then in effect, or which otherwise are required to
be delivered to third parties, (iv) the discounted future net revenue,
calculated in accordance with SEC guidelines (utilizing the same prices utilized
in the Company's year-end reserve report), attributable to reserves that are
required to be delivered to third parties to fully satisfy the obligations of
the Company and its Restricted Subsidiaries with respect to Volumetric
Production Payments on the schedules specified with respect thereto and (v) the
discounted future net revenue, calculated in accordance with SEC guidelines,
attributable to reserves subject to Dollar-Denominated Production Payments that,
based on the estimates of production included in determining the discounted
future net revenue specified in the immediately preceding clause (a) (i)
(utilizing the same prices utilized in the Company's year-end reserve report),
would be necessary to satisfy fully the obligations of the Company and its
Restricted Subsidiaries with respect to Dollar-Denominated Production Payments
on the schedules specified with respect thereto.
    
 
   
     "Affiliate" of any specified Person means any other Person, directly or
indirectly, controlling or controlled by or under direct or indirect common
control with such specified Person. For the purposes of this definition,
"control" when used with respect to any Person means the power to direct the
management and policies of such Person, directly or indirectly, whether through
the ownership of voting securities, by contract or otherwise; and the terms
"controlling" and controlled" have meanings correlative to the foregoing. For
purposes of the provisions described under "-- Certain Covenants -- Limitation
on Restricted Payments," "-- Certain Covenants -- Limitation on Affiliate
Transactions" and "-- Certain Covenants -- Limitations on Sales of Assets and
Subsidiary Stock" only, "Affiliate" shall also mean any beneficial owner of
Capital Stock representing 10% or more of the total voting power of the Voting
Stock (on a fully diluted basis) of the Company or of rights or warrants to
purchase such Capital Stock (whether or not currently exercisable) and any
Person who would be an Affiliate of any such beneficial owner pursuant to the
first sentence hereof.
    
 
   
     "Asset Disposition" means any sale, lease, transfer or other disposition
(or series of related sales, leases, transfers or dispositions) by the Company
or any Restricted Subsidiary, including any disposition by means of a merger,
consolidation or similar transaction (each referred to for the purposes of this
definition as a "disposition"), of (i) any shares of Capital Stock of a
Restricted Subsidiary (other than directors' qualifying shares or shares
required by applicable law to be held by a Person other than the Company or a
Restricted Subsidiary), (ii) all or substantially all the assets of any division
or line of business of the Company or any Restricted Subsidiary or (iii) any
other assets of the Company or any Restricted Subsidiary outside of the ordinary
course of business of the Company or such Restricted Subsidiary. Notwithstanding
the foregoing, none of the following shall be deemed to be an Asset Disposition:
(1) a disposition by a Restricted Subsidiary to the Company or by the Company or
a Restricted Subsidiary to a Wholly Owned Subsidiary, (2) for purposes of the
covenant described under "-- Certain Covenants -- Limitation on Sales of Assets
and Subsidiary Stock" only, a disposition that constitutes a Restricted Payment
permitted by the covenant described under "-- Certain Covenants -- Limitation on
Restricted Payments," a disposition of all or substantially all the assets of
the Company in compliance with "-- Certain Covenants -- Merger and
Consolidation" or a disposition that constitutes a Change of Control pursuant to
clause (iii) of the definition thereof, (3) the sale or transfer (whether or not
in the ordinary course of business) of crude oil and natural gas properties or
direct or indirect interests in real property; provided, however, that at the
time of such sale or transfer such properties do not have associated with them
any proved reserves, (4) the abandonment, farm-out, lease or sublease of
developed or undeveloped crude oil and natural gas properties in the ordinary
course of business, (5) the trade or exchange by the Company or any Restricted
Subsidiary of any crude oil and natural gas property owned or held by the
Company or such Restricted Subsidiary for any crude oil and
    
 
                                       69
<PAGE>   73
 
natural gas property owned or held by another Person or (6) the sale or transfer
of hydrocarbons or other mineral products or surplus or obsolete equipment, in
each case in the ordinary course of business.
 
     "Attributable Debt" in respect of a Sale/Leaseback Transaction means, as at
the time of determination, the present value (discounted at the interest rate
implicit in the Sale/Leaseback Transaction, compounded annually) of the total
obligations of the lessee for rental payments during the remaining term of the
lease included in such Sale/Leaseback Transaction (including any period for
which such lease has been extended).
 
     "Average Life" means, as of the date of determination, with respect to any
Indebtedness or Preferred Stock, the quotient obtained by dividing (i) the sum
of the products of numbers of years from the date of determination to the dates
of each successive scheduled principal payment of such Indebtedness or
redemption or similar payment with respect to such Preferred Stock multiplied by
the amount of such payment by (ii) the sum of all such payments.
 
     "Banks" has the meaning specified in the Credit Agreement.
 
     "Board of Directors" means the Board of Directors of the Company or any
committee thereof duly authorized to act on behalf of such Board.
 
     "Business Day" means each day which is not a Legal Holiday (as defined in
the Indenture).
 
     "Capital Lease Obligations" means an obligation that is required to be
classified and accounted for as a capital lease for financial reporting purposes
in accordance with GAAP, and the amount of Indebtedness represented by such
obligation shall be the capitalized amount of such obligation determined in
accordance with GAAP; and the Stated Maturity thereof shall be the date of the
last payment of rent or any other amount due under such lease prior to the first
date upon which such lease may be terminated by the lessee without payment of a
penalty.
 
   
     "Capital Stock" of any Person means any and all shares, interests, rights
to purchase, warrants, options, participations or other equivalents of or
interests in (however designated) equity of such Person, including any Preferred
Stock, but excluding any debt securities convertible into such equity.
    
 
     "Change of Control" means the occurrence of any of the following events:
 
   
          (i) any "person" (as such term is used in Sections 13(d) and 14(d) of
     the Exchange Act), other than a Permitted Holder, is or becomes the
     beneficial owner (as defined in Rules 13d-3 and 13d-5 under the Exchange
     Act, except that for purposes of this clause (i) such person shall be
     deemed to have "beneficial ownership" of all shares that such person has
     the right to acquire, whether such right is exercisable immediately or only
     after the passage of time), directly or indirectly, of more than 40% of the
     total voting power of the Voting Stock of the Company (for the purposes of
     this clause (i), such person shall be deemed to beneficially own any Voting
     Stock of a specified corporation held by a parent corporation, if such
     person is the beneficial owner (as defined in this clause (i)), directly or
     indirectly, of more than 40% of the voting power of the Voting Stock of
     such parent corporation);
    
 
   
          (ii) during any period of two consecutive years from and after the
     Issue Date, individuals who at the beginning of such period constituted the
     Board of Directors of DRI (together with any new directors whose election
     by such Board of Directors or whose nomination for election by the
     shareholders of DRI was approved by a vote of a majority of the directors
     of DRI then still in office who were either directors at the beginning of
     such period or whose election or nomination for election was previously so
     approved) cease for any reason to constitute a majority of the Board of
     Directors then in office;
    
 
   
          (iii) the shareholders of DRI or the Company shall have approved any
     plan of liquidation or dissolution of DRI or the Company; or
    
 
   
          (iv) the merger or consolidation of the Company with or into another
     Person or the merger of another Person with or into the Company, or the
     sale, lease, conveyance or transfer of all or substantially all the assets
     of the Company and its Restricted Subsidiaries, taken as a whole, to
     another Person (other than a Person that is controlled (as defined in the
     definition of "Affiliate") by the Permitted Holders), and, in the case of
     any such merger or consolidation, the securities of the Company that are
     outstanding
    
 
                                       70
<PAGE>   74
 
     immediately prior to such transaction and which represent 100% of the
     aggregate voting power of the Voting Stock of the Company are changed into
     or exchanged for cash, securities or property, unless pursuant to such
     transaction such securities are changed into or exchanged for, in addition
     to any other consideration, securities of the surviving corporation that
     represent immediately after such transaction, at least a majority of the
     aggregate voting power of the Voting Stock of the surviving corporation.
 
     "Code" means the Internal Revenue Code of 1986, as amended.
 
   
     "Consolidated Coverage Ratio" as of any date of determination means the
ratio of (i) the aggregate amount of EBITDA for the period of the most recent
four consecutive fiscal quarters ending at least 45 days prior to the date of
such determination to (ii) Consolidated Interest Expense for such four fiscal
quarters; provided, however, that (1) if the Company or any Restricted
Subsidiary has Incurred any Indebtedness since the beginning of such period that
remains outstanding or if the transaction giving rise to the need to calculate
the Consolidated Coverage Ratio is an Incurrence of Indebtedness, or both,
EBITDA and Consolidated Interest Expense for such period shall be calculated
after giving effect on a pro forma basis to such Indebtedness as if such
Indebtedness had been Incurred on the first day of such period and the discharge
of any other Indebtedness repaid, repurchased, defeased or otherwise discharged
with the proceeds of such new Indebtedness as if such discharge had occurred on
the first day of such period, (2) if the Company or any Restricted Subsidiary
has repaid, repurchased, defeased or otherwise discharged any Indebtedness since
the beginning of such period or if any indebtedness is to be repaid,
repurchased, defeased or otherwise discharged on the date of the transaction
giving rise to the need to calculate the Consolidated Coverage Ratio, EBITDA and
Consolidated Interest Expense for such period shall be calculated on a pro forma
basis as if such discharge had occurred on the first day of such period and as
if the Company or such Restricted Subsidiary has not earned the interest income
actually earned during such period in respect of cash or Temporary Cash
Investments used to repay, repurchase, defease or otherwise discharge such
Indebtedness, (3) if since the beginning of such period the Company or any
Restricted Subsidiary shall have made any Asset Disposition (other than an Asset
Disposition involving assets having a fair market value of less than the greater
of two and one-half percent (2.5%) of Adjusted Consolidated Net Tangible Assets
as of the end of the Company's then most recently completed fiscal year and $3.0
million), then EBITDA for such period shall be reduced by an amount equal to
EBITDA (if positive) directly attributable to the assets which are the subject
of such Asset Disposition for such period, or increased by an amount equal to
EBITDA (if negative), directly attributable thereto for such period and
Consolidated Interest Expense for such period shall be reduced by an amount
equal to the Consolidated Interest Expense directly attributable to any
Indebtedness of the Company or any Restricted Subsidiary repaid, repurchased,
defeased or otherwise discharged with respect to the Company and its continuing
Restricted Subsidiaries in connection with such Asset Disposition for such
period (or, if the Capital Stock of any Restricted Subsidiary is sold, the
Consolidated Interest Expense for such period directly attributable to the
Indebtedness of such Restricted Subsidiary to the extent the Company and its
continuing Restricted Subsidiaries are no longer liable for such Indebtedness
after such sale), (4) if since the beginning of such period the Company or any
Restricted Subsidiary (by merger or otherwise) shall have made an Investment in
any Restricted Subsidiary (or any person which becomes a Restricted Subsidiary)
or an acquisition (including by way of lease) of assets, including any
acquisition of assets occurring in connection with a transaction requiring a
calculation to be made hereunder, EBITDA and Consolidated Interest Expense for
such period shall be calculated after giving pro forma effect thereto (including
the Incurrence of any Indebtedness) as if such Investment or acquisition
occurred on the first day of such period and (5) if since the beginning of such
period any Person (that subsequently became a Restricted Subsidiary or was
merged with or into the Company or any Restricted Subsidiary since the beginning
of such period) shall have made any Asset Disposition, any Investment or
acquisition of assets that would have required an adjustment pursuant to clause
(3) or (4) above if made by the Company or a Restricted Subsidiary during such
period, EBITDA and Consolidated Interest Expense for such period shall be
calculated after giving pro forma effect thereto as if such Asset Disposition,
Investment or acquisition occurred on the first day of such period. For purposes
of this definition, whenever pro forma effect is to be given to an acquisition
of assets, the amount of income or earnings relating thereto and the amount of
Consolidated Interest Expense associated with any Indebtedness Incurred in
connection therewith, the pro forma calculations shall be determined in good
faith by a responsible
    
 
                                       71
<PAGE>   75
 
financial or accounting Officer of the Company. If any Indebtedness bears a
floating rate of interest and is being given pro forma effect, the interest of
such Indebtedness shall be calculated as if the rate in effect on the date of
determination had been the applicable rate for the entire period (taking into
account any Interest Rate Agreement applicable to such Indebtedness if such
Interest Rate Agreement has a remaining term in excess of 12 months).
 
     "Consolidated Current Liabilities" as of the date of determination means
the aggregate amount of liabilities of the Company and its consolidated
Restricted Subsidiaries which would properly be classified as current
liabilities (including taxes accrued as estimated), on a consolidated balance
sheet of the Company and its Restricted subsidiaries at such date, after
eliminating (i) all intercompany items between the Company and any Restricted
Subsidiary and (ii) all current maturities of long-term Indebtedness, all as
determined in accordance with GAAP consistently applied.
 
     "Consolidated Indebtedness" at any date of determination means the amount
of Indebtedness of the Company and its Restricted Subsidiaries outstanding on
such date determined on a consolidated basis in accordance with GAAP.
 
     "Consolidated Interest Expense" means, for any period, the total interest
expense of the Company and its Restricted Subsidiaries for such period,
determined on a consolidated basis in accordance with GAAP, plus, to the extent
not included in such total interest expense, and to the extent incurred by the
Company or its Restricted Subsidiaries, without duplication, (i) interest
expense attributable to Capital Lease Obligations and imputed interest with
respect to Attributable Debt, (ii) capitalized interest, (iii) non-cash interest
expense, (iv) commissions, discounts and other fees and charges owed with
respect to letters of credit and bankers' acceptance financing, (v) net costs
(including amortization of fees and up-front payments) associated with interest
rate caps and other interest rate and currency options that, at the time entered
into, resulted in the Company and its Restricted Subsidiaries being net payees
as to future payouts under such caps or options, and interest rate and currency
swaps and forwards for which the Company or any of its Restricted Subsidiaries
has paid a premium, (vi) dividends (excluding dividends paid in shares of
Capital Stock which is not Disqualified Stock) in respect of all Disqualified
Stock held by Persons other than the Company or a Wholly Owned Subsidiary, (vii)
interest accruing on any Indebtedness of any other Person to the extent such
Indebtedness is Guaranteed by the Company or any Restricted Subsidiary or
secured by a Lien on assets of the Company or any Restricted Subsidiary to the
extent such Indebtedness constitutes Indebtedness of the Company or any
Restricted Subsidiary (whether or not such Guarantee or Lien is called upon);
provided, however, "Consolidated Interest Expense" shall not include any (x)
amortization of costs relating to original debt issuances other than the
amortization of debt discount related to the issuance of zero coupon securities
or other securities with an original issue price of not more than 90% of the
principal thereof, (y) Consolidated Interest Expense with respect to any
Indebtedness Incurred pursuant to clause (b)(8) of the covenant described under
"-- Certain Covenants -- Limitation on Indebtedness" and (z) noncash interest
expense Incurred in connection with interest rate caps and other interest rate
and currency options that, at the time entered into, resulted in the Company and
its Restricted Subsidiaries being either neutral or net payors as to future
payouts under such caps or options.
 
     "Consolidated Net Income" means, for any period, the net income of the
Company and its Subsidiaries determined on a consolidated basis in accordance
with GAAP; provided, however, that there shall not be included in such
Consolidated Net Income: (i) any net income of any Person (other than the
Company) if such Person is not a Restricted Subsidiary, except that (A) subject
to the exclusion contained in clause (iv) below, the Company's equity in the net
income of any such Person for such period shall be included in such Consolidated
Net Income up to the aggregate amount of cash actually distributed by such
Person during such period to the Company or a Restricted Subsidiary as a
dividend or other distribution (subject, in the case of a dividend or other
distribution paid to a Restricted Subsidiary, to the limitations contained in
clause (iii) below) and (B) the Company's equity in a net loss of any such
Person for such period shall be included in determining such Consolidated Net
Income; (ii) any net income (or loss) of any Person acquired by the Company or a
Subsidiary in a pooling of interests transaction for any period prior to the
date of such acquisition; (iii) any net income of any Restricted Subsidiary if
such Restricted Subsidiary is subject to restrictions, directly or indirectly,
on the payment of dividends or the making of distributions by such
 
                                       72
<PAGE>   76
 
   
Restricted Subsidiary, directly or indirectly, to the Company, except that (A)
subject to the exclusion contained in clause (iv) below, the Company's equity in
the net income of any such Restricted Subsidiary for such period shall be
included in such Consolidated Net Income up to the aggregate amount of cash
actually distributed by such Restricted Subsidiary during such period to the
Company or another Restricted Subsidiary as a dividend or other distribution
(subject, in the case of a dividend or other distribution paid to another
Restricted Subsidiary, to the limitation contained in this clause) and (B) the
Company's equity in a net loss of any such Restricted Subsidiary for such period
shall be included in determining such Consolidated Net Income; (iv) any gain or
loss realized upon the sale or other disposition of any assets of the Company or
its consolidated Subsidiaries (including pursuant to any sale-and-leaseback
arrangement) which is not sold or otherwise disposed of in the ordinary course
of business and any gain or loss realized upon the sale or other disposition of
any Capital Stock of any Person; (v) extraordinary gains or losses; (vi) any
non-cash compensation expense realized for grants of performance shares, stock
options or stock awards to officers, directors and employees of the Company or
any of its Restricted Subsidiaries; (vii) any write-downs of non-current assets;
provided, however, that any ceiling limitation write-downs under SEC guidelines
shall be treated as capitalized costs, as if such write-downs had not occurred;
and (viii) the cumulative effect of a change in accounting principles.
Notwithstanding the foregoing, for the purposes of the covenant described under
"Certain Covenants -- Limitation on Restricted Payments" only, there shall be
excluded from Consolidated Net Income any dividends, repayments of loans or
advances or other transfers of assets from Unrestricted Subsidiaries to the
Company or a Restricted Subsidiary to the extent such dividends, repayments or
transfers increase the amount of Restricted Payments permitted under such
covenant pursuant to clause (a)(3)(E) thereof.
    
 
     "Consolidated Net Tangible Assets", as of any date of determination, means
the total amount of assets (less accumulated depreciation and amortization,
allowances for doubtful receivables, other applicable reserves and other
properly deductible items) which would appear on a balance sheet of the Company
and its Restricted Subsidiaries, determined on a consolidated basis in
accordance with GAAP, and after giving effect to purchase accounting and after
deducting therefrom Consolidated Current Liabilities and, to the extent
otherwise included, the amounts of: (i) minority interests in Restricted
Subsidiaries held by Persons other than the Company or a Restricted Subsidiary;
(ii) excess of cost over fair value of assets of businesses acquired, as
determined in good faith by the Board of Directors; (iii) any revaluation or
other write-up in book value of assets subsequent to the Issue Date as a result
of a change in the method of valuation in accordance with GAAP consistently
applied; (iv) unamortized debt discount and expenses and other unamortized
deferred charges, goodwill, patents, trademarks, service marks, trade names,
copyrights, licenses, organization or developmental expenses and other
intangible items; (v) treasury stock; (vi) cash set apart and held in a sinking
or other analogous fund established for the purpose of redemption or other
retirement of Capital Stock to the extent such obligation is not reflected in
Consolidated Current Liabilities; and (vii) Investments in and assets of
Unrestricted Subsidiaries.
 
     "Consolidated Net Worth" means the total of the amounts shown on the
balance sheet of the Company and its Subsidiaries, determined on a consolidated
basis in accordance with GAAP, as of the end of the most recent fiscal quarter
of the Company ending at least 45 days prior to the taking of any action for the
purpose of which the determination is being made, as (i) the par or stated value
of all outstanding Capital Stock of the Company plus (ii) paid-in capital or
capital surplus relating to such Capital Stock plus (iii) any retained earnings
or earned surplus less (A) any accumulated deficit and (B) any amounts
attributable to Disqualified Stock.
 
   
     "Credit Agreement" means that certain Credit Agreement, dated as of
December 29, 1997, as amended, by and among the Company and NationsBank of
Texas, N.A. (or any successor thereto or replacement thereof), as administrative
agent and as a lender, and certain other institutions, as lenders, including any
related notes, guarantees, collateral documents, instruments and agreements
executed in connection therewith, and in each case as amended, restated,
modified, renewed, refunded, replaced, refinanced or increased in whole or in
part, from time to time.
    
 
     "Credit Facilities" means, with respect to the Company or any Restricted
Subsidiary, one or more debt facilities (including the Credit Agreement) or
commercial paper facilities with banks or other institutional
 
                                       73
<PAGE>   77
 
lenders providing for revolving credit loans, term loans, production payments,
receivables financing (including through the sale of receivables to such lenders
or to special purpose entities formed to borrow from such lenders against such
receivables) or letters of credit, in each case, as amended, restated, modified,
renewed, refunded, replaced or refinanced in whole or in part from time to time.
 
     "Currency Agreement" means in respect of a Person any foreign exchange
contract, currency swap agreement or other similar agreement to which such
Person is a party or a beneficiary.
 
     "Default" means any event which is, or after notice or passage of time or
both would be, an Event of Default.
 
   
     "Designated Senior Indebtedness" in respect of a Person means (i) all the
obligations of such Person under any Credit Facility (including the Credit
Agreement) and (ii) any other Senior Indebtedness of such Person which, at the
date of determination, has an aggregate principal amount outstanding of, or
under which, at the date of determination, the holders thereof are committed to
lend up to, at least $20 million and is specifically designated by such Person
in the instrument evidencing or governing such Senior Indebtedness as
"Designated Senior Indebtedness" for purposes of the Indenture.
    
 
     "Disqualified Stock" means, with respect to any Person, any Capital Stock
to the extent that by its terms (or by the terms of any security into which it
is convertible or for which it is exchangeable) or upon the happening of any
event, it (i) matures or is mandatorily redeemable pursuant to a sinking fund
obligation or otherwise, (ii) is convertible or exchangeable for Indebtedness or
Disqualified Stock or (iii) is redeemable, whole or in part, at the option of
the holder thereof, in each case described in the immediately preceding clauses
(i) , (ii) or (iii), on or prior to the Stated Maturity of the Notes; provided,
however, that any Capital Stock that would not constitute Disqualified Stock but
for provisions thereof giving holders thereof the right to require such Person
to repurchase or redeem such Capital Stock upon the occurrence of an "asset
sale" or "change of control" occurring prior to the Stated Maturity of the Notes
shall not constitute Disqualified Stock if (x) the "asset sale" or "change of
control" provisions applicable to such Capital Stock are not more favorable to
the holders of such Capital Stock than the provisions described under
"-- Certain Covenants -- Limitation on Sales of Assets and Subsidiary Stock" and
"-- Certain Covenants -- Change of Control" and (y) any such requirement only
becomes operative after compliance with such corresponding terms applicable to
the Notes, including the purchase of any Notes tendered pursuant thereto.
 
   
     "Dollar-Denominated Production Payments" means production payment
obligations recorded as liabilities in accordance with GAAP, together with all
undertakings and obligations in connection therewith.
    
 
     "DRI" means Denbury Resources Inc., a Canadian corporation, and any
successor corporation.
 
   
     "DRI Guaranty" means the Guarantee of the Notes (on an unconditional,
unsecured senior subordinated basis) by DRI pursuant to the terms of the
Indenture.
    
 
   
     "EBITDA" for any period means the sum of Consolidated Net Income, plus
Consolidated Interest Expense plus the following to the extent deducted in
calculating such Consolidated Net Income: (a) provision for taxes based on
income or profits, (b) depletion and depreciation expense, (c) amortization
expense (d) exploration expense (if applicable to the Company after the Issue
Date), (e) unrealized foreign exchange losses and (f) all other non-cash charges
(excluding any such non-cash charge to the extent that it represents an accrual
of or reserve for cash charges in any future period or amortization of a prepaid
cash expense that was paid in a prior period except such amounts as the Company
determines in good faith are nonrecurring), and less, to the extent included in
calculating such Consolidated Net Income and in excess of any costs or expenses
attributable thereto and deducted in calculating such Consolidated Net Income,
the sum of (x) the amount of deferred revenues that are amortized during such
period and are attributable to reserves that are subject to Volumetric
Production Payments, (y) amounts recorded in accordance with GAAP as repayments
of principal and interest pursuant to Dollar-Denominated Production Payments.
Notwithstanding the foregoing, the provision for taxes based on the income or
profits of, and the depletion, depreciation, amortization and exploration and
other non-cash charges of, a Restricted Subsidiary shall be added to
Consolidated Net Income to compute EBITDA only to the extent (and in the same
proportion) that the net income of such Restricted Subsidiary was included in
calculating Consolidated Net Income and only if a
    
 
                                       74
<PAGE>   78
 
   
corresponding amount would be permitted at the date of determination to be
dividended to the Company by such Restricted Subsidiary without prior approval
(that has not been obtained), pursuant to the terms of its charter and all
agreements, instruments, judgments, decrees, orders, statutes, rules and
governmental regulations applicable to such Restricted Subsidiary or its
stockholders and (z) unrealized foreign exchange gains.
    
 
     "Exchange Act" means the Securities Exchange Act of 1934, as amended.
 
   
     "Exempt Foreign Subsidiary" means (i) any Subsidiary engaged in the Oil and
Gas Business exclusively outside the United States of America, irrespective of
its jurisdiction of incorporation and (ii) any other Subsidiary whose assets
(excluding any cash and Temporary Cash Investments) consist exclusively of
Capital Stock or Indebtedness of one or more Subsidiaries described in clause
(i) of this definition, that, in any case, is so designated by the Company in an
Officers' Certificate delivered to the Trustee and (a) is not a Guarantor of,
and has not granted any Lien to secure, any Indebtedness of the Company or any
Subsidiary other than another Exempt Foreign Subsidiary and (b) does not have
total assets that, when aggregated with the total assets of any other Exempt
Foreign Subsidiary, exceed 25% of the Company's consolidated total assets, as
determined in accordance with GAAP, as reflected on the Company's most recent
quarterly or annual balance sheet. The Company may revoke the designation of any
Exempt Foreign Subsidiary by notice to the Trustee.
    
 
     "GAAP" means generally accepted accounting principles in the United States
of America as in effect on the Issue Date, including those set forth in (i) the
opinions and pronouncements of the Accounting Principles Board of the American
Institute of Certified Public Accountants, (ii) statements and pronouncements of
the Financial Accounting Standards Board, (iii) such other statements by such
other entity as approved by a significant segment of the accounting profession,
and (iv) the rules and regulations of the SEC governing the inclusion of
financial statements (including pro forma financial statements) in periodic
reports required to be filed pursuant to Section 13 of the Exchange Act,
including opinions and pronouncements in staff accounting bulletins and similar
written statements from the accounting staff of the SEC.
 
     "Guarantee" means, without duplication, any obligation, contingent or
otherwise, of any Person directly or indirectly guaranteeing any Indebtedness of
any Person and any obligation, direct or indirect, contingent or otherwise, of
such Person (i) to purchase or pay (or advance or supply funds for the purchase
or payment of) such Indebtedness of such Person (whether arising by virtue of
partnership arrangements, or by agreements to keep-well, to purchase assets,
goods, securities or services, to take-or-pay or to maintain financial statement
conditions or otherwise) or (ii) entered into for the purpose of assuring in any
other manner the obligee of such Indebtedness of the payment thereof or to
protect such obligee against loss in respect thereof (in whole or in part);
provided, however, that the term "Guarantee" shall not include endorsements for
collection or deposit in the ordinary course of business. The term "Guarantee"
used as a verb has a corresponding meaning. The term "Guarantor" shall mean any
Person Guaranteeing any obligation.
 
   
     "Guaranties" means the DRI Guaranty and each Subsidiary Guaranty. Each of
the Guaranties is referred to individually as a "Guaranty."
    
 
   
     "Guarantors" means DRI and each Subsidiary Guarantor. Each of the
Guarantors is referred to individually as a "Guarantor."
    
 
   
     "Guaranty Agreement" means a supplemental indenture, in a form satisfactory
to the Trustee, pursuant to which DRI, a Subsidiary Guarantor or any other
Person becomes subject to the applicable terms and conditions of the Indenture.
    
 
     "Hedging Obligations" of any Person means the obligations of such Person
pursuant to any Oil and Gas Hedging Contract, Interest Rate Agreement or
Currency Agreement.
 
     "Holder" or "Noteholder" means the Person in whose name a Note is
registered on the Registrar's books.
 
     "Incur" means issue, assume, Guarantee, incur or otherwise become liable
for; provided, however, that any Indebtedness or Capital Stock of a Person
existing at the time such Person becomes a Subsidiary (whether by merger,
consolidation, acquisition or otherwise) shall be deemed to be Incurred by such
Subsidiary at the time it becomes a Subsidiary. The term "Incurrence" when used
as a noun shall have a
 
                                       75
<PAGE>   79
 
correlative meaning. The accretion of principal of a non-interest bearing or
other discount security shall not be deemed the Incurrence of Indebtedness.
 
   
     "Indebtedness" means, with respect to any Person on any date of
determination (without duplication), (i) the principal of and premium (if any)
in respect of (A) indebtedness of such Person for money borrowed and (B)
indebtedness evidenced by notes, debentures, bonds or other similar instruments
for the payment of which such Person is responsible or liable; (ii) all Capital
Lease Obligations of such Person and all Attributable Debt in respect of
Sale/Leaseback Transactions entered into by such Person; (iii) all obligations
of such Person issued or assumed as the deferred purchase price of property
(which purchase price is due more than six months after the date of taking
delivery of title to such property), including all obligations of such Person
for the deferred purchase price of property under any title retention agreement
(but excluding trade accounts payable arising in the ordinary course of
business); (iv) all obligations of such Person for the reimbursement of any
obligor on any letter of credit, banker's acceptance or similar credit
transaction (other than obligations with respect to letters of credit securing
obligations (other than obligations described in (i) through (iii) above)
entered into in the ordinary course of business of such Person to the extent
such letters of credit are not drawn upon or, if and to the extent drawn upon,
such drawing is reimbursed no later than the tenth Business Day following
receipt by such Person of a demand for reimbursement following payment on the
letter of credit); (v) the amount of all obligations of such Person with respect
to the redemption, repayment or other repurchase of any Disqualified Stock (but
excluding any accrued dividends); (vi) all obligations of such Person relating
to any Production Payment; (vii) all obligations of the type referred to in
clauses (i) through (vi) of other Persons and all dividends of other Persons for
the payment of which, in either case, such Person is responsible or liable,
directly or indirectly, as obligor, guarantor or otherwise, including by means
of any Guarantee (including, with respect to any Production Payment, any
warranties or guarantees of production or payment by such Person with respect to
such Production Payment but excluding other contractual obligations of such
Person with respect to such Production Payment); (viii) all obligations of the
type referred to in clauses (i) through (vii) of other Persons secured by any
Lien on any property or asset of such first-mentioned Person (whether or not
such obligation is assumed by such first-mentioned Person), the amount of such
obligation being deemed to be the lesser of the value of such property or assets
or the amount of the obligation so secured and (ix) to the extent not otherwise
included in this definition, Hedging Obligations of such Person. The amount of
Indebtedness of any Person at any date shall be the outstanding balance at such
date of all unconditional obligations as described above and the maximum
liability, assuming the contingency giving rise to the obligation were to have
occurred on such date, of any Guarantees outstanding at such date.
    
 
   
     None of the following shall constitute Indebtedness: (i) indebtedness
arising from agreements providing for indemnification or adjustment of purchase
price or from guarantees securing any obligations of the Company or any of its
Subsidiaries pursuant to such agreements, incurred or assumed in connection with
the disposition of any business, assets or Subsidiary of the Company, other than
guarantees or similar credit support by the Company or any of its Subsidiaries
of Indebtedness incurred by any Person acquiring all or any portion of such
business, assets or Subsidiary for the purpose of financing such acquisition;
(ii) any trade payables or other similar liabilities to trade creditors and
other accrued current liabilities incurred in the ordinary course of business as
the deferred purchase price of property; (iii) any liability for Federal, state,
local or other taxes owed or owing by such Person; (iv) amounts due in the
ordinary course of business to other royalty and working interest owners; (v)
obligations arising from guarantees to suppliers, lessors, licensees,
contractors, franchisees or customers incurred in the ordinary course of
business; (vi) obligations (other than express Guarantees of indebtedness for
borrowed money) in respect of Indebtedness of other Persons arising in
connection with (A) the sale or discount of accounts receivable, (B) trade
acceptances and (C) endorsements of instruments for deposit in the ordinary
course of business; (vii) obligations in respect of performance bonds provided
by the Company or its Subsidiaries in the ordinary course of business and
refinancing thereof; (viii) obligations arising from the honoring by a bank or
other financial institution of a check, draft or similar instrument drawn
against insufficient funds in the ordinary course of business, provided, however
that such obligation is extinguished within two Business Days of its incurrence;
and (ix) obligations in respect of any obligations under workers' compensation
laws and similar legislation.
    
 
                                       76
<PAGE>   80
 
     "Interest Rate Agreement" means any interest rate swap agreement, interest
rate cap agreement or other financial agreement or arrangement designed to
protect the Company or any Restricted Subsidiary against fluctuations in
interest rates.
 
   
     "Investment" in any Person means any direct or indirect advance, loan
(other than advances to customers or joint interest partners or drilling
partnerships sponsored by the Company or any Restricted Subsidiary in the
ordinary course of business that are recorded as accounts receivable on the
balance sheet of the lender) or other extensions of credit (including by way of
Guarantee or similar arrangement) or capital contribution to (by means of any
transfer of cash or other property to others or any payment for property or
services for the account or use of others), or any purchase or acquisition of
Capital Stock, Indebtedness or other similar instruments issued by such Person.
For purposes of the definition of "Unrestricted Subsidiary", the definition of
"Restricted Payment" and the covenant described under "-- Certain
Covenants -- Limitation on Restricted Payments," (i) "Investment" shall include
the portion (proportionate to the Company's equity interest in such Subsidiary)
of the fair market value of the net assets of any Subsidiary of the Company at
the time that such Subsidiary is designated an Unrestricted Subsidiary;
provided, however, that upon a redesignation of such Subsidiary as a Restricted
Subsidiary, the Company shall be deemed to continue to have a permanent
"Investment" in an Unrestricted Subsidiary equal to an amount (if positive)
equal to (x) the Company's "Investment" in such Subsidiary at the time of such
redesignation less (y) the portion (proportionate to the Company's equity
interest in such Subsidiary) of the fair market value of the net assets of such
Subsidiary at the time of such redesignation; and (ii) any property transferred
to or from an Unrestricted Subsidiary shall be valued at its fair market value
at the time of such transfer, in each case as determined in good faith by the
Board of Directors.
    
 
     "Issue Date" means the date on which the Notes are originally issued.
 
     "Lien" means any mortgage, pledge, security interest, encumbrance, lien or
charge of any kind (including any conditional sale or other title retention
agreement or lease in the nature thereof).
 
   
     "Limited Recourse Production Payments" means, with respect to any
Production Payments, Indebtedness, the terms of which limit the liability of the
Company and its Restricted Subsidiaries solely to the hydrocarbons covered by
such Production Payments; provided, however, that no default with respect to
such Indebtedness would permit any holder of any other Indebtedness of the
Company or any Restricted Subsidiary to declare a default on such other
Indebtedness or cause the payment thereof to be accelerated or payable prior to
its stated maturity.
    
 
   
     "Material Change" means an increase or decrease (excluding changes that
result solely from changes in prices and changes resulting from the incurrence
of previously estimated future development costs) of more than 25% during a
fiscal quarter in the discounted future net revenues from proved crude oil and
natural gas reserves of the Company and its Restricted Subsidiaries, calculated
in accordance with clause (a)(i) of the definition of Adjusted Consolidated Net
Tangible Assets; provided, however, that the following will be excluded from the
calculation of Material Change: (i) any acquisitions during the fiscal quarter
of oil and gas reserves that have been estimated by independent petroleum
engineers and with respect to which a report or reports of such engineers exist
and (ii) any disposition of properties existing at the beginning of such fiscal
quarter that have been disposed of in compliance with the covenant described
under "-- Certain Covenants -- Limitation on Sales of Assets and Subsidiary
Stock."
    
 
     "Moody's" means Moody's Investor's Service, Inc. and its successors.
 
     "Net Available Cash" from an Asset Disposition means cash payments received
therefrom (including any cash payments received by way of deferred payment of
principal pursuant to a note or installment receivable or otherwise, but only as
and when received, but excluding any other consideration received in the form of
assumption by the acquiring Person of Indebtedness or other obligations relating
to such properties or assets or received in any other noncash form) in each case
net of (i) all legal, title and recording tax expenses, commissions and other
fees (including financial and other advisory fees) and expenses incurred, and
all Federal, state, provincial, foreign and local taxes required to be accrued
as a liability under GAAP, as a consequence of such Asset Disposition, (ii) all
payments made on any Indebtedness which is secured by any
 
                                       77
<PAGE>   81
 
assets subject to such Asset Disposition, in accordance with the terms of any
Lien upon or other security agreement of any kind with respect to such assets,
or which must by its terms, or in order to obtain a necessary consent to such
Asset Disposition, or by applicable law, be repaid out of the proceeds from such
Asset Disposition, (iii) all distributions and other payments required to be
made to minority interest holders in Subsidiaries or joint ventures as a result
of such Asset Disposition and (iv) the deduction of appropriate amounts provided
by the seller as a reserve, in accordance with GAAP, against any liabilities
associated with the property or other assets disposed in such Asset Disposition
and retained by the Company or any Restricted Subsidiary after such Asset
Disposition.
 
     "Net Cash Proceeds", with respect to any issuance or sale of Capital Stock,
means the cash proceeds of such issuance or sale net of attorneys' fees,
accountants' fees, underwriters' or placement agents' fees, discounts or
commissions and brokerage, consultant and other fees actually incurred in
connection with such issuance or sale and net of taxes paid or payable as a
result thereof.
 
     "Net Present Value" means, with respect to any proved hydrocarbon reserves,
the discounted future net cash flows associated with such reserves, determined
in accordance with the rules and regulations (including interpretations thereof)
of the SEC in effect on the Issue Date.
 
     "Net Working Capital" means (a) all current assets of the Company and its
Restricted Subsidiaries minus (b) all current liabilities of the Company and its
Restricted Subsidiaries, except current liabilities included in Indebtedness,
determined in accordance with GAAP.
 
   
     "Non-recourse Purchase Money Indebtedness" means Indebtedness (other than
Capital Lease Obligations) of the Company or any Subsidiary Guarantor incurred
in connection with the acquisition by the Company or such Subsidiary Guarantor
in the ordinary course of business of fixed assets used in the Oil and Gas
Business (including office buildings and other real property used by the Company
or such Subsidiary Guarantor in conducting its operations) with respect to which
(1) the holders of such Indebtedness agree that they will look solely to the
fixed assets so acquired which secure such Indebtedness, and neither the Company
nor any Restricted Subsidiary (a) is directly or indirectly liable for such
Indebtedness or (b) provides credit support, including any undertaking,
Guarantee, agreement or instrument that would constitute Indebtedness (other
than the grant of a Lien on such acquired fixed assets), and (ii) no default or
event of default with respect to such Indebtedness would cause, or permit (after
notice or passage of time or otherwise), any holder of any other Indebtedness of
the Company or a Subsidiary Guarantor to declare a default or event of default
on such other Indebtedness or cause the payment, repurchase, redemption,
defeasance or other acquisition or retirement for value thereof to be
accelerated or payable prior to any scheduled principal payment, scheduled
sinking fund payment or maturity.
    
 
     "Oil and Gas Business" means the business of the exploration for, and
exploitation, development, acquisition, production, processing (but not
refining), marketing, storage and transportation of, hydrocarbons, and other
related energy and natural resource businesses (including oil and gas services
businesses related to the foregoing).
 
     "Oil and Gas Hedging Contract" means any oil and gas purchase or hedging
agreement, and other agreement or arrangement, in each case, that is designed to
provide protection against oil and gas price fluctuations.
 
   
     "Oil and Gas Liens" means (i) Liens on any specific property or any
interest therein, construction thereon or improvement thereto to secure all or
any part of the costs incurred for surveying, exploration, drilling, extraction,
development, operation, production, construction, alteration, repair or
improvement of, in, under or on such property and the plugging and abandonment
of wells located thereon (it being understood that, in the case of oil and gas
producing properties, or any interest therein, costs incurred for "development"
shall include costs incurred for all facilities relating to such properties or
to projects, ventures or other arrangements of which such properties form a part
or which relate to such properties or interests); (ii) Liens on an oil or gas
producing property to secure obligations incurred or guarantees of obligations
incurred in connection with or necessarily incidental to commitments for the
purchase or sale of, or the transportation or distribution of, the products
derived from such property; (iii) Liens arising under partnership agreements,
oil
    
 
                                       78
<PAGE>   82
 
   
and gas leases, overriding royalty agreements, net profits agreements,
production payment agreements, royalty trust agreements, incentive compensation
programs on terms that are reasonably customary in the Oil and Gas Business for
geologists, geophysicists and other providers of technical services to the
Company or a Restricted Subsidiary, master limited partnership agreements,
farm-out agreements, farm-in agreements, division orders, contracts for the
sale, purchase, exchange, transportation, gathering or processing of oil, gas or
other hydrocarbons, unitizations and pooling designations, declarations, orders
and agreements, development agreements, operating agreements, production sales
contracts, area of mutual interest agreements, gas balancing or deferred
production agreements, injection, repressuring and recycling agreements, salt
water or other disposal agreements, seismic or geophysical permits or
agreements, and other agreements which are customary in the Oil and Gas
Business; provided, however, that in all instances such Liens are limited to the
assets that are the subject of the relevant agreement, program, order or
contract; (iv) Liens arising in connection with Production Payments; and (v)
Liens on pipelines or pipeline facilities that arise by operation of law.
    
 
   
     "Permitted Business Investment" means any investment made in the ordinary
course of, and of a nature that is or shall have become customary in, the Oil
and Gas Business including investments or expenditures for actively exploiting,
exploring for, acquiring, developing, producing, processing, gathering,
marketing or transporting oil and gas through agreements, transactions,
interests or arrangements which permit one to share risks or costs, comply with
regulatory requirements regarding local ownership or satisfy other objectives
customarily achieved through the conduct of Oil and Gas Business jointly with
third parties, including (i) ownership interests in oil and gas properties,
processing facilities, gathering systems, pipelines or ancillary real property
interests and (ii) Investments in the form of or pursuant to operating
agreements, processing agreements, farm-in agreements, farm-out agreements,
development agreements, area of mutual interest agreements, unitization
agreements, pooling agreements, joint bidding agreements, service contracts,
joint venture agreements, partnership agreements (whether general or limited),
subscription agreements, stock purchase agreements and other similar agreements
(including for limited liability companies) with third parties, excluding,
however, Investments in corporations other than Restricted Subsidiaries.
    
 
   
     "Permitted Holders" means TPG Advisors, Inc. or any Person who on the Issue
Date is an Affiliate thereof or any Person controlled by TPG Advisors, Inc.
    
 
   
     "Permitted Investment" means an Investment by the Company or any Restricted
Subsidiary in (i) a Restricted Subsidiary or a Person that will, upon the making
of such Investment, become a Restricted Subsidiary; provided, however,that the
primary business of such Restricted Subsidiary is an Oil and Gas Business; (ii)
another Person if as a result of such Investment such other Person is merged or
consolidated with or into, or transfers or conveys all or substantially all its
assets to, the Company or a Restricted Subsidiary; provided, however, that such
Person's primary business is an Oil and Gas Business; (iii) Temporary Cash
Investments; (iv) receivables owing to the Company or any Restricted Subsidiary
if created or acquired in the ordinary course of business and payable or
dischargeable in accordance with customary trade terms; provided, however, that
such trade terms may include such concessionary trade terms as the Company or
any such Restricted Subsidiary deems reasonable under the circumstances; (v)
payroll, travel and similar advances to cover matters that are expected at the
time of such advances ultimately to be treated as expenses for accounting
purposes and that are made in the ordinary course of business; (vi) loans or
advances to employees made in the ordinary course of business; (vii) stock,
obligations or securities received in settlement of debts created in the
ordinary course of business and owing to the Company or any Restricted
Subsidiary or in satisfaction of judgments; (viii) any Person to the extent such
Investment represents the non-cash portion of the consideration received for an
Asset Disposition as permitted pursuant to the covenant described under
"-- Certain Covenants -- Limitation on Sales of Assets and Subsidiary Stock;"
(ix) Permitted Business Investments; (x) Investments intended to promote the
Company's strategic objectives in the Oil and Gas Business in an aggregate
amount not to exceed 5.0% of ACNTA (determined as of the date of the making of
any such Investment) at any one time outstanding (which Investments shall be
deemed to be no longer outstanding only upon and to the extent of the return of
capital thereof); and (xi) Investments made pursuant to Hedging Obligations of
the Company and the Restricted Subsidiaries.
    
 
                                       79
<PAGE>   83
 
   
     "Permitted Liens" means, with respect to any Person, (a) Liens existing as
of the Issue Date; (b) Liens securing the Notes, the DRI Guaranty, any
Subsidiary Guaranty and other obligations arising under the Indenture; (c) any
Lien existing on any property of a Person at the time such Person is merged or
consolidated with or into the Company or a Restricted Subsidiary or becomes a
Restricted Subsidiary (and not incurred in anticipation of or in connection with
such transaction), provided that such Liens are not extended to other property
of the Company or the Restricted Subsidiaries; (d) any Lien existing on any
property at the time of the acquisition thereof (and not incurred in
anticipation of or in connection with such transaction), provided that such
Liens are not extended to other property of the Company or the Restricted
Subsidiaries; (e) any Lien incurred in the ordinary course of business
incidental to the conduct of the business of the Company or the Restricted
Subsidiaries or the ownership of their property (including (i) easements, rights
of way and similar encumbrances, (ii) rights or title of lessors under leases
(other than Capital Lease Obligations), (iii) rights of collecting banks having
rights of setoff, revocation, refund or chargeback with respect to money or
instruments of the Company or the Restricted Subsidiaries on deposit with or in
the possession of such banks, (iv) Liens imposed by law, including Liens under
workers' compensation or similar legislation and mechanics', carriers',
warehousemen's, materialmen's, suppliers' and vendors' Liens, (v) Liens incurred
to secure performance of obligations with respect to statutory or regulatory
requirements, performance or return-of-money bonds, surety bonds or other
obligations of a like nature and incurred in a manner consistent with industry
practice and (vi) Oil and Gas Liens, in each case which are not incurred in
connection with the borrowing of money, the obtaining of advances or credit or
the payment of the deferred purchase price of property (other than trade
accounts payable arising in the ordinary course of business); (f) Liens for
taxes, assessments and governmental charges not yet due or the validity of which
are being contested in good faith by appropriate proceedings, promptly
instituted and diligently conducted, and for which adequate reserves have been
established to the extent required by GAAP as in effect at such time; (g) Liens
incurred to secure appeal bonds and judgment and attachment Liens, in each case
in connection with litigation or legal proceedings that are being contested in
good faith by appropriate proceedings, so long as reserves have been established
to the extent required by GAAP as in effect at such time and so long as such
Liens do not encumber assets by an aggregate amount (together with the amount of
any unstayed judgments against the Company or any Restricted Subsidiary but
excluding any such Liens to the extent securing insured or indemnified judgments
or orders) in excess of $10.0 million; (h) Liens securing Hedging Obligations of
the Company and its Restricted Subsidiaries; (i) Liens securing purchase money
Indebtedness or Capital Lease Obligations, provided that such Liens attach only
to the property acquired with the proceeds of such purchase money Indebtedness
or the property which is the subject of such Capital Lease Obligations; (j)
Liens securing Non-recourse Purchase Money Indebtedness granted in connection
with the acquisition by the Company or any Restricted Subsidiary in the ordinary
course of business of fixed assets used in the Oil and Gas Business (including
the office buildings and other real property used by the Company or such
Restricted Subsidiary in conducting its operations), provided that (i) such
Liens attach only to the fixed assets acquired with the proceeds of such
Non-recourse Purchase Money Indebtedness and (ii) such Non-recourse Purchase
Money Indebtedness is not in excess of the purchase price of such fixed assets;
(k) Liens resulting from the deposit of funds or evidences of Indebtedness in
trust for the purpose of decreasing or legally defeasing Indebtedness of the
Company or any Restricted Subsidiary so long as such deposit of funds is
permitted by the provisions of the Indenture described under "-- Limitation on
Restricted Payments;" (l) Liens resulting from a pledge of Capital Stock of a
Person that is not a Restricted Subsidiary to secure obligations of such Person
and any refinancings thereof; (m) Liens to secure any permitted extension,
renewal, refinancing, refunding or exchange (or successive extensions, renewals,
refinancings, refundings or exchanges), in whole or in part, of or for any
Indebtedness secured by Liens referred to in clauses (a), (b), (c), (d), (i) and
(j) above; provided, however, that (i) such new Lien shall be limited to all or
part of the same property (including future improvements thereon and accessions
thereto) subject to the original Lien and (ii) the Indebtedness secured by such
Lien at such time is not increased to any amount greater than the sum of (A) the
outstanding principal amount or, if greater, the committed amount of the
Indebtedness secured by such original Lien immediately prior to such extension,
renewal, refinancing, refunding or exchange and (B) an amount necessary to pay
any fees and expenses, including premiums, related to such refinancing,
refunding, extension, renewal or replacement; and (n) Liens in favor of DRI, the
Company, or a Restricted Subsidiary. Notwithstanding anything in this paragraph
to the contrary, the term "Permitted Liens" shall not include
    
 
                                       80
<PAGE>   84
 
   
Liens resulting from the creation, incurrence, issuance, assumption or Guarantee
of any Production Payments other than (i) any such Liens existing as of the
Issue Date, (ii) Production Payments in connection with the acquisition of any
property after the Issue Date, provided that any such Lien created in connection
therewith is created, incurred, issued, assumed or Guaranteed in connection with
the financing of, and within 60 days after the acquisition of, such property and
(iii) Production Payments other than those described in clauses (i) and (ii) of
this sentence, to the extent such Production Payments constitute Asset
Dispositions made pursuant to and in compliance with the provisions of the
Indenture described under "-- Limitation on Sales of Assets and Subsidiary
Stock" and (iv) incentive compensation programs for geologists, geophysicists
and other providers of technical services to the Company and any Restricted
Subsidiary; provided, however, that, in the case of the immediately foregoing
clauses (i), (ii), (iii) and (iv), any Lien created in connection with any such
Production Payments shall be limited to the property that is the subject of such
Production Payments.
    
 
     "Permitted Marketing Obligations" means Indebtedness of the Company or any
Restricted Subsidiary under letter of credit or borrowed money obligations, or
in lieu of or in addition to such letters of credit or borrowed money,
guarantees of such Indebtedness or other obligations of the Company or any
Restricted Subsidiary by any other Restricted Subsidiary, as applicable, related
to the purchase by the Company or any Restricted Subsidiary of hydrocarbons for
which the Company or such Restricted Subsidiary has contracts to sell; provided,
however, that in the event that such Indebtedness or obligations are guaranteed
by the Company or any Restricted Subsidiary, then either (i) the Person with
which the Company or such Restricted Subsidiary has contracts to sell has an
investment grade credit rating from S&P or Moody's, or in lieu thereof, a Person
guaranteeing the payment of such obligated Person has an investment grade credit
rating from S & P or Moody's, or (ii) such Person posts, or has posted for it, a
letter of credit in favor of the Company or such Restricted Subsidiary with
respect to all such Person's obligations to the Company or such Restricted
Subsidiary under such contracts.
 
     "Person" means any individual, corporation, partnership, joint venture,
association, joint-stock company, trust, unincorporated organization, government
or any agency or political subdivision thereof or any other entity.
 
     "Preferred Stock", as applied to the Capital Stock of any corporation,
means Capital Stock of any class or classes (however designated) which is
preferred as to the payment of dividends, or as to the distribution of assets
upon any voluntary or involuntary liquidation or dissolution of such
corporation, over shares of Capital Stock of any other class of such
corporation.
 
     The term "principal" of a Note means the principal of the Note plus the
premium, if any, payable on the Note which is due or overdue or is to become due
at the relevant time.
 
     "Production Payments" means, collectively, Dollar-Denominated Production
Payments and Volumetric Production Payments.
 
     "Public Market" means any time when at least 15% of the total issued and
outstanding common stock of DRI has been distributed by means of an effective
registration statement under the Securities Act or sales pursuant to Rule 144
under the Securities Act.
 
     "Refinance" means, in respect of any Indebtedness, to refinance, extend,
renew, refund, repay, prepay, redeem, decease or retire, or to issue other
Indebtedness in exchange or replacement for, such Indebtedness. "Refinanced" and
"Refinancing" shall have correlative meanings.
 
   
     "Refinancing Indebtedness" means Indebtedness that Refinances any
Indebtedness of the Company or any Restricted Subsidiary existing on the Issue
Date or Incurred in compliance with the Indenture including Indebtedness that
Refinances Refinancing Indebtedness; provided, however, that (i) such
Refinancing Indebtedness has a Stated Maturity no earlier than the Stated
Maturity of the Indebtedness being Refinanced, (ii) such Refinancing
Indebtedness has an Average Life at the time such Refinancing Indebtedness is
Incurred that is equal to or greater than the Average Life of the Indebtedness
being Refinanced, (iii) such Refinancing Indebtedness has an aggregate principal
amount (or if Incurred with original issue discount, an aggregate issue price)
that is equal to or less than the aggregate principal amount (or if Incurred
with original issue discount, the aggregate accreted value) then outstanding or
committed (plus fees and expenses,
    
 
                                       81
<PAGE>   85
 
   
including any premium and defeasance costs) under the Indebtedness being
Refinanced and (iv) if the Indebtedness being Refinanced is Non-recourse
Purchase Money Indebtedness, such Refinancing Indebtedness satisfies clauses (i)
and (ii) of the definition of "Non-recourse Purchase Money Indebtedness;"
provided further, however, that Refinancing Indebtedness shall not include (x)
Indebtedness of a Subsidiary that Refinances Indebtedness of the Company or (y)
Indebtedness of the Company or a Restricted Subsidiary that Refinances
Indebtedness of an Unrestricted Subsidiary.
    
 
     "Representative" means any trustee, agent or representative (if any) for an
issue of Senior Indebtedness of the Company or of a Guarantor.
 
     "Restricted Payment" with respect to any Person means (i) the declaration
or payment of any dividends or any other distributions of any sort in respect of
its Capital Stock (including any payment in connection with any merger or
consolidation involving such Person) or similar payment to the direct or
indirect holders of its Capital Stock (other than (x) dividends or distributions
payable solely in its Capital Stock (other than Disqualified Stock), (y)
dividends or distributions payable solely to the Company or a Restricted
Subsidiary, and (z) pro rata dividends or other distributions made by a
Subsidiary that is not a Wholly Owned Subsidiary to minority stockholders (or
owners of an equivalent interest in the case of a Subsidiary that is an entity
other than a corporation)), (ii) the purchase, redemption or other acquisition
or retirement for value of any Capital Stock of the Company held by any Person
or of any Capital Stock of a Restricted Subsidiary held by any Affiliate of the
Company (other than a Restricted Subsidiary), including the exercise of any
option to exchange any Capital Stock (other than into Capital Stock of the
Company that is not Disqualified Stock), (iii) the purchase, repurchase,
redemption, defeasance or other acquisition or retirement for value, prior to
scheduled maturity, scheduled repayment or scheduled sinking fund payment of any
Subordinated Obligations of such Person (other than the purchase, repurchase or
other acquisition of Subordinated Obligations purchased in anticipation of
satisfying a sinking fund obligation, principal installment or final maturity,
in each case due within one year of the date of acquisition) or (iv) the making
of any Investment (other than a Permitted Investment) in any Person.
 
     "Restricted Subsidiary" means any Subsidiary of the Company that is not an
Unrestricted Subsidiary.
 
     "S&P" means Standard & Poor's Rating Services, a division of The
McGraw-Hill Company, Inc., and its successors.
 
     "Sale/Leaseback Transaction" means an arrangement relating to property now
owned or hereafter acquired whereby the Company or a Restricted Subsidiary
transfers such property to a Person and the Company or a Restricted Subsidiary
leases it from such Person, provided that the fair market value of such property
(as reasonably determined by the Board of Directors acting in good faith) is $10
million or more.
 
     "SEC" means the Securities and Exchange Commission.
 
     "Secured Indebtedness" means any Indebtedness of the Company secured by a
Lien.
 
   
     "Senior Indebtedness" means with respect to any Person (i) Indebtedness of
such Person, and all obligations of such Person under any Credit Facility,
whether outstanding on the Issue Date or thereafter Incurred and (ii) accrued
and unpaid interest (including interest accruing on or after the filing of any
petition in bankruptcy or for reorganization relating such Person to the extent
post-filing interest is allowed in such proceeding) in respect of (A)
indebtedness of such Person for money borrowed and (B) indebtedness evidenced by
notes, debentures, bonds or other similar instruments for the payment of which
such Person is responsible or liable unless, with respect to obligations
described in the immediately preceding clause (i) or (ii), in the instrument
creating or evidencing the same or pursuant to which the same is outstanding, it
is provided that such obligations are not superior in right of payment to the
Notes or the applicable Guaranty; provided, however, that Senior Indebtedness
shall not include (1) any obligation of such Person to any Subsidiary of such
Person, (2) any liability for Federal, state, local or other taxes owed or owing
by such Person, (3) any accounts payable or other liability to trade creditors
arising in the ordinary course of business (including guarantees thereof or
instruments evidencing such liabilities), (4) any Indebtedness of such Person
(and any accrued and unpaid interest in respect thereof) which is subordinate or
junior in any respect to any other Indebtedness or other obligation of such
Person or (5) that portion of any Indebtedness which at the
    
 
                                       82
<PAGE>   86
 
   
time of Incurrence is Incurred in violation of the Indenture (other than, in the
case of the Company or any Guarantor that Guarantees any Credit Facility,
Indebtedness under any Credit Facility that is Incurred on the basis of a
representation by the Company or the applicable Guarantor to the applicable
lenders that such Person is permitted to Incur such Indebtedness under the
Indenture).
    
 
   
     "Senior Subordinated Indebtedness" means (i) with respect to the Company,
the Notes and any other Indebtedness of the Company that specifically provides
that such Indebtedness is to rank pari passu with the Notes in right of payment
and is not subordinated by its terms in right of payment to any Indebtedness or
other obligation of the Company which is not Senior Indebtedness of the Company
and (ii) with respect to each Guarantor, its Guaranty of the Notes and any other
indebtedness of such Person that specifically provides that such Indebtedness
rank pari passu with its applicable Guaranty in respect of payment and is not
subordinated by its terms in respect of payment to any Indebtedness or other
obligation of such Person which is not Senior Indebtedness of such Person.
    
 
     "Significant Subsidiary" means any Restricted Subsidiary that would be a
"Significant Subsidiary" of the Company within the meaning of Rule 1-02 under
Regulation S-X promulgated by the SEC.
 
     "Stated Maturity" means, with respect to any security, the date specified
in such security as the fixed date on which the final payment of principal of
such security is due and payable, including pursuant to any mandatory redemption
provision (but excluding any provision providing for the repurchase of such
security at the option of the holder thereof upon the happening of any
contingency unless such contingency has occurred).
 
   
     "Stock Offering" means a primary offering, whether public or private, of
shares of common stock of DRI or the Company.
    
 
   
     "Subordinated Obligation" means any Indebtedness of the Company or any
Guarantor (whether outstanding on the Issue Date or thereafter Incurred) which
is subordinate or junior in right of payment to, in the case of the Company, the
Notes or, in the case of a Guarantor, its Guaranty pursuant to a written
agreement to that effect.
    
 
     "Subsidiary" means, in respect of any Person, any corporation, association,
partnership or other business entity of which more than 50% of the total voting
power of shares of Capital Stock or other interests (including partnership
interests) entitled (without regard to the occurrence of any contingency) to
vote in the election of directors, managers or trustees thereof is at the time
owned or controlled, directly or indirectly, by (i) such Person, (ii) such
Person and one or more Subsidiaries of such Person or (iii) one or more
Subsidiaries of such Person.
 
   
     "Subsidiary Guarantor" means any Subsidiary of the Company that Guarantees
the Notes pursuant to a Subsidiary Guaranty.
    
 
   
     "Subsidiary Guaranty" means a Guarantee of the Notes (on an unconditional,
unsecured senior subordinated basis) by a Restricted Subsidiary pursuant to the
terms of the Indenture.
    
 
   
     "Temporary Cash Investments" means any of the following: (i) any investment
in direct obligations of the United States of America or any agency thereof or
obligations guaranteed by the United States of America or any agency thereof,
(ii) investments in time deposit accounts, certificates of deposit and money
market deposits maturing within one year of the date of acquisition thereof
issued by a bank or trust company which is organized under the laws of the
United States of America, any state thereof or any foreign country recognized by
the United States, and which bank or trust company has capital, surplus and
undivided profits aggregating in excess of $200.0 million (or the foreign
currency equivalent thereof) and has outstanding debt which is rated "A" (or
such similar equivalent rating) or higher by at least one nationally recognized
credit rating organization (as defined in Rule 436 under the Securities Act) or
any money-market fund sponsored by a registered broker dealer or mutual fund
distributor whose assets consist of obligations of the types described in
clauses (i), (ii), (iii), (iv) and (v) hereof, (iii) repurchase obligations with
a term of not more than 30 days for underlying securities of the types described
in clause (i) above entered into with a bank meeting the qualifications
described in clause (ii) above, (iv) investments in commercial paper, maturing
not more than
    
 
                                       83
<PAGE>   87
 
   
one year after the date of acquisition, issued by a Person (other than an
Affiliate of the Company) organized and in existence under the laws of the
United States of America or any foreign country recognized by the United States
of America with a rating at the time as of which any investment therein is made
of "P-2" (or higher) according to Moody's or "A-2" (or higher) according to S&P
or "R-1" (or higher) by Dominion Bond Rating Service Limited or Canadian Bond
Rating Service, Inc. (in the case of a Canadian issuer), (v) investments in
securities with maturities of six months or less from the date of acquisition
issued or fully guaranteed by any state, commonwealth or territory of the United
States of America, or by any political subdivision or taxing authority thereof,
and rated at least "A" by S&P or "A" by Moody's and (vi) investments in
asset-backed securities maturing within one year of the date of acquisition
thereof with a long-term rating at the time as of which any investment therein
is made of "A3" (or higher) by Dominion Bond Rating Service Limited or Canadian
Bond Rating Service, Inc. (in the case of a Canadian issuer).
    
 
     "Unrestricted Subsidiary" means (i) any Subsidiary of the Company that at
the time of determination shall be designated an Unrestricted Subsidiary by the
Board of Directors in the manner provided below and (ii) any Subsidiary of an
Unrestricted Subsidiary. The Board of Directors may designate any Subsidiary of
the Company (including any newly acquired or newly formed Subsidiary) to be an
Unrestricted Subsidiary unless such Subsidiary or any of its Subsidiaries owns
any Capital Stock or Indebtedness of, or holds any Lien on any property of, the
Company or any other Subsidiary of the Company that is not a Subsidiary of the
Subsidiary to be so designated; provided, however, that either (A) the
Subsidiary to be so designated has total assets of $1,000 or less or (B) if such
Subsidiary has assets greater than $1,000, such designation would be permitted
under the covenant described under "-- Certain Covenants -- Limitation on
Restricted Payments". The Board of Directors may designate any Unrestricted
Subsidiary to be a Restricted Subsidiary; provided, however, that immediately
after giving effect to such designation (x) the Company could Incur $1.00 of
additional Indebtedness under paragraph (a) of the covenant described under
"-- Certain Covenants -- Limitation on Indebtedness" and (y) no Default shall
have occurred and be continuing. Any such designation by the Board of Directors
shall be evidenced by the Company to the Trustee by promptly filing with the
Trustee a copy of the board resolution giving effect to such designation and an
Officers' Certificate certifying that such designation complied with the
foregoing provisions.
 
     "U.S. Government Obligations" means direct obligations (or certificates
representing an ownership interest in such obligations) of the United States of
America (including any agency or instrumentality thereof) for the payment of
which the full faith and credit of the United States of America is pledged and
which are not callable at the issuer's option.
 
     "Volumetric Production Payments" means production payment obligations
recorded as deferred revenue in accordance with GAAP, together with all
undertakings and obligations in connection therewith.
 
     "Voting Stock" of a Person means all classes of Capital Stock or other
interests (including partnership interests) of such Person then outstanding and
normally entitled (without regard to the occurrence of any contingency) to vote
in the election of directors, managers or trustees thereof.
 
     "Wholly Owned Subsidiary" means a Restricted Subsidiary all the Capital
Stock of which (other than directors' qualifying shares and shares held by other
Persons to the extent such shares are required by applicable law to be held by a
Person other than the Company or a Restricted Subsidiary) is owned by the
Company or one or more Wholly Owned Subsidiaries.
 
CERTAIN COVENANTS
 
     The Indenture contains covenants including, among others, the following:
 
   
     LIMITATION ON INDEBTEDNESS. (a) The Company shall not, and shall not permit
any Restricted Subsidiary to, Incur, directly or indirectly, any Indebtedness;
provided, however, that the Company or Restrictive Subsidiary may Incur
Indebtedness if, on the date of such Incurrence and after giving effect thereto,
either (i) the Consolidated Coverage Ratio equals or exceeds 2.25 to 1.0.
    
 
                                       84
<PAGE>   88
 
     (b) Notwithstanding the foregoing paragraph (a), the Company and any
Restricted Subsidiary may Incur the following Indebtedness:
 
   
          (1) Indebtedness Incurred pursuant to any Credit Facility, so long as
     the aggregate amount of all Indebtedness outstanding under all Credit
     Facilities does not, at any one time, exceed the aggregate amount of
     borrowing availability as of such date under all Credit Facilities that
     determine availability on the basis of a borrowing base or other
     asset-based calculation; provided, however, that in no event shall such
     amount exceed the greater of (x) $300 million and (y)75% of ACNTA as of the
     date of such Incurrence;
    
 
          (2) Indebtedness owed to and held by the Company or a Wholly Owned
     Subsidiary; provided, however, that any subsequent issuance or transfer of
     any Capital Stock which results in any such Wholly Owned Subsidiary ceasing
     to be a Wholly Owned Subsidiary or any subsequent transfer of such
     Indebtedness (other than to the Company or another Wholly Owned Subsidiary)
     shall be deemed, in each case, to constitute the Incurrence of such
     Indebtedness by the issuer thereof;
 
   
          (3) The Notes (other than additional Notes);
    
 
          (4) Indebtedness outstanding on the Issue Date (other than
     Indebtedness described in clause (1), (2) or (3) of this covenant);
 
   
          (5) Indebtedness of (A) a Restricted Subsidiary Incurred and
     outstanding on or prior to the date on which such Restricted Subsidiary was
     acquired by the Company (other than Indebtedness Incurred in connection
     with, or to provide all or any portion of the funds or credit support
     utilized to consummate, the transaction or series of related transactions
     pursuant to which such Restricted Subsidiary became a Restricted Subsidiary
     or was acquired by the Company) and (B) the Company or a Restricted
     Subsidiary Incurred for the purpose of financing all or any part of the
     cost of acquiring oil and gas properties, another person (other than a
     Person that was, immediately prior to such acquisition, a Subsidiary of the
     Company) engaged in the Oil and Gas Business or all or substantially all
     the assets of such a person; provided, however, that, in the case of each
     of clause (A) and clause (B) above, on the date of such Incurrence and
     after giving effect thereto, the Consolidated Coverage Ratio equals or
     exceeds 2.0 to 1.0;
    
 
   
          (6) Refinancing Indebtedness in respect of Indebtedness Incurred
     pursuant to paragraph (a) or pursuant to clause (3), (4), (5) above, this
     clause (6) or clause (7) below; provided, however, that to the extent such
     Refinancing Indebtedness directly or indirectly Refinances Indebtedness or
     Preferred Stock of a Restricted Subsidiary described in clause (5), such
     Refinancing Indebtedness shall be Incurred only by such Restricted
     Subsidiary or the Company;
    
 
   
          (7) Non-recourse Purchase Money Indebtedness;
    
 
   
          (8) Indebtedness with respect to Production Payments; provided,
     however, that any such Indebtedness shall be Limited Recourse Production
     Payments; provided further, however, that the Net Present Value of the
     reserves related to such Production Payments shall not exceed 30% of ACNTA
     at the time of Incurrence;
    
 
   
          (9) Indebtedness consisting of the Guaranties and any Guarantees of
     Indebtedness Incurred by the Company pursuant to clauses (1) and (3);
    
 
   
          (10) Indebtedness consisting of Interest Rate Agreements directly
     related to Indebtedness permitted to be Incurred by the Company and its
     Restricted Subsidiaries pursuant to the Indenture;
    
 
   
          (11) Indebtedness under Oil and Gas Hedging Contracts and Currency
     Agreements entered into in the ordinary course of business for the purpose
     of limiting risks that arise in the ordinary course of business of the
     Company and its Restricted Subsidiaries;
    
 
   
          (12) Indebtedness in respect of bid, performance or surety obligations
     issued by or for the account of the Company or any Restricted Subsidiary in
     the ordinary course of business, including Guarantees
    
 
                                       85
<PAGE>   89
 
   
     and letters of credit functioning as or supporting such bid, performance or
     surety obligations (in each case other than for an obligation for money
     borrowed);
    
 
   
          (13) Indebtedness of the Company or a Restricted Subsidiary Incurred
     to finance capital expenditures and Refinancing Indebtedness Incurred in
     respect thereof in an aggregate amount which, when taken together with the
     amount of all other Indebtedness Incurred pursuant to this clause (13) and
     then outstanding, does not exceed $20 million;
    
 
   
          (14) Permitted Marketing Obligations;
    
 
   
          (15) In-kind obligations relating to oil and gas balancing positions
     arising in the ordinary course of business; and
    
 
   
          (16) Indebtedness in an aggregate amount which, together with the
     amount of all other Indebtedness of the Company and its Restricted
     Subsidiaries outstanding on the date of such Incurrence (other than
     Indebtedness permitted by clauses (1) through (15) above or paragraph (a))
     does not exceed $30 million.
    
 
   
     (c) Notwithstanding the foregoing, the Company shall not, and shall not
permit any Subsidiary Guarantor to, Incur any Indebtedness pursuant to the
foregoing paragraph (b) if the proceeds thereof are used, directly or
indirectly, to Refinance any Subordinated Obligations unless such Indebtedness
shall be subordinated to the Notes or the relevant Subsidiary Guarantor, as the
case may be to at least the same extent as such Subordinated Obligations.
    
 
     (d) For purposes of determining compliance with the foregoing covenant, (i)
in the event that an item of Indebtedness meets the criteria of more than one of
the types of Indebtedness described above, the Company, in its sole discretion,
will classify such item of Indebtedness and only be required to include the
amount and type of such Indebtedness in one of the above clauses and (ii) an
item of Indebtedness may be divided and classified in more than one of the types
of Indebtedness described above.
 
   
     INCURRENCE OF LAYERED INDEBTEDNESS. Notwithstanding paragraphs (a) and (b)
of the covenant described above under "-- Limitation on Indebtedness," DRI and
the Company shall not, and the Company shall not permit any Subsidiary Guarantor
to, Incur any Indebtedness if such Indebtedness is subordinate or junior in
ranking in any respect to any Senior Indebtedness of DRI, the Company or such
Subsidiary Guarantor, as applicable, unless such Indebtedness is Senior
Subordinated Indebtedness or is expressly subordinated in right of payment to
Senior Subordinated Indebtedness.
    
 
   
     LIMITATION ON RESTRICTED PAYMENTS. (a) The Company shall not, and shall not
permit any Restricted Subsidiary, directly or indirectly, to make a Restricted
Payment if at the time the Company or such Restricted Subsidiary makes such
Restricted Payment: (1) a Default shall have occurred and be continuing (or
would result therefrom); (2) the Company is not able to Incur an additional
$1.00 of Indebtedness pursuant to paragraph (a) of the covenant described under
"-- Limitation on Indebtedness"; or (3) the aggregate amount of such Restricted
Payment and all other Restricted Payments since the Issue Date would exceed the
sum of: (A) 50% of the aggregate Consolidated Net Income of the Company accrued
on a cumulative basis commencing on the last day of the fiscal quarter
immediately preceding the Issue Date, and ending on the last day of the fiscal
quarter ending on or immediately preceding the date of such proposed Restricted
Payment (or, if such aggregate Consolidated Net Income shall be a deficit, minus
100% of such deficit); (B) the aggregate Net Cash Proceeds received by the
Company from the issuance or sale of its Capital Stock (other than Disqualified
Stock) subsequent to the Issue Date (other than an issuance or sale to a
Subsidiary of the Company and other than an issuance or sale to an employee
stock ownership plan or to a trust established by the Company or any of its
Subsidiaries for the benefit of their employees); (C) the aggregate Net Cash
Proceeds received by the Company from the issue or sale subsequent to the Issue
Date of its Capital Stock (other than Disqualified Stock) to an employee stock
ownership plan; provided, however, that if such employee stock ownership plan
incurs any Indebtedness with respect thereto, such aggregate amount shall be
limited to an amount equal to any increase in the Consolidated Net Worth of the
Company resulting from principal repayments made by such employee stock
ownership plan with respect to such Indebtedness;
    
 
                                       86
<PAGE>   90
 
   
(D) the amount by which Indebtedness of the Company is reduced on the Company's
balance sheet upon the conversion or exchange (other than by a Subsidiary of the
Company) subsequent to the Issue Date, of any Indebtedness of the Company
convertible or exchangeable for Capital Stock (other than Disqualified Stock) of
the Company (less the amount of any cash, or the fair value of any other
property, distributed by the Company upon such conversion or exchange); and (E)
an amount equal to the sum of (i) the net reduction in Investments in any Person
resulting from dividends, repayments of loans or advances or other transfers of
assets, in each case to the Company or any Restricted Subsidiary from such
Person, and (ii) the portion (proportionate to the Company's equity interest in
such Subsidiary) of the fair market value of the net assets of an Unrestricted
Subsidiary at the time such Unrestricted Subsidiary is designated a Restricted
Subsidiary; provided, however, that the foregoing sum shall not exceed, in the
case of any Person, the amount of Investments previously made (and treated as a
Restricted Payment) by the Company or any Restricted Subsidiary in such Person.
    
 
   
     (b) The provisions of the foregoing paragraph (a) shall not prohibit: (i)
dividends paid within 60 days after the date of declaration thereof if at such
date of declaration such dividend would have complied with this covenant;
provided, however, that at the time of payment of such dividend, no other
Default shall have occurred and be continuing (or result therefrom); provided
further, however, that such dividend shall be included in the calculation of the
amount of Restricted Payments; (ii) any purchase or redemption of Capital Stock
or Subordinated Obligations of the Company made by exchange for, or out of the
proceeds of the substantially concurrent sale of, Capital Stock of the Company
(other than Disqualified Stock and other than Capital Stock issued or sold to a
Subsidiary of the Company or an employee stock ownership plan or to a trust
established by the Company or any of its Subsidiaries for the benefit of their
employees); provided, however, that (A) such purchase or redemption shall be
excluded in the calculation of the amount of Restricted Payments and (B) the Net
Cash Proceeds from such sale shall be excluded from the calculation of amounts
under clause (3)(B) of paragraph (a) above (but only to the extent that such Net
Cash Proceeds were used to purchase or redeem such Capital Stock as provided in
this clause (ii)); (iii) any purchase, repurchase, redemption, defeasance or
other acquisition or retirement for value of Subordinated Obligations of the
Company made by exchange for, or out of the proceeds of the substantially
concurrent sale of, Subordinated Obligations of the Company; provided, however,
that such purchase, repurchase, redemption, defeasance or other acquisition or
retirement for value shall be excluded in the calculation of the amount of
Restricted Payments; (iv) the repurchase of shares of, or options to purchase
shares of, common stock of the Company or any of its Subsidiaries from
employees, former employees, directors or former directors of the Company or any
of its Subsidiaries (or permitted transferees of such employees, former
employees, directors or former directors), pursuant to the terms of the
agreements (including employment agreements) or plans (or amendments thereto)
approved by the Board of Directors under which such individuals purchase or sell
or are granted the option to purchase or sell, shares of such common stock;
provided, however, that the aggregate amount of such repurchases shall not
exceed $2 million in any calendar year; provided further, however, that such
repurchases shall be excluded in the calculation of the amount of Restricted
Payments; (v) loans made to officers, directors or employees of DRI, the Company
or any Restricted Subsidiary approved by the Board of Directors (or a duly
authorized officer), the net cash proceeds of which are used solely (A) to
purchase common stock of DRI in connection with a restricted stock or employee
stock purchase plan, or to exercise stock options received pursuant to an
employee or director stock option plan or other incentive plan, in a principal
amount not to exceed the exercise price of such stock options or (B) to
refinance loans, together with accrued interest thereon, made pursuant to item
(A) of this clause (v); provided, however, that such loans shall be excluded in
the calculation of the amount of Restricted Payments; or (vi) other Restricted
Payments in an aggregate amount not to exceed $20 million; provided however,
that such Restricted Payments shall be excluded in the calculation of the amount
of Restricted Payments.
    
 
     LIMITATION ON RESTRICTIONS ON DISTRIBUTIONS FROM RESTRICTED SUBSIDIARIES.
The Company shall not, and shall not permit any Restricted Subsidiary to, create
or otherwise cause or permit to exist or become effective any consensual
encumbrance or restriction on the ability of any Restricted Subsidiary (a) to
pay dividends or make any other distributions on its Capital Stock or pay any
Indebtedness owed to the Company or a Restricted Subsidiary, (b) to make any
loans or advances to the Company or a Restricted Subsidiary or (c) to transfer
any of its property or assets to the Company or a Restricted Subsidiary, except:
(i) any encumbrance
 
                                       87
<PAGE>   91
 
   
or restriction in the Credit Agreement on the Issue Date or pursuant to any
other agreement in effect on the Issue Date; (ii) any encumbrance or restriction
with respect to a Restricted Subsidiary pursuant to an agreement relating to any
Indebtedness Incurred by such Restricted Subsidiary on or prior to the date on
which such Restricted Subsidiary was acquired by the Company (other than
Indebtedness Incurred as consideration in, or to provide all or any portion of
the funds or credit support utilized to consummate, the transaction or series of
related transactions pursuant to which such Restricted Subsidiary became a
Restricted Subsidiary or was acquired by the Company) and outstanding on such
date; (iii) any encumbrance or restriction pursuant to an agreement effecting a
Refinancing of Indebtedness Incurred pursuant to an agreement referred to in
clause (i) or (ii) of this covenant or this clause (iii) or contained in any
amendment to an agreement referred to in clause (i) or (ii) of this covenant or
this clause (iii); provided, however, that the encumbrances and restrictions
with respect to such Restricted Subsidiary contained in any such refinancing
agreement or amendment are no less favorable to the Noteholders than
encumbrances and restrictions with respect to such Restricted Subsidiary
contained in such agreements; (iv) any such encumbrance or restriction
consisting of customary nonassignment provisions in leases governing leasehold
interests to the extent such provisions restrict the transfer of the lease or
the property leased thereunder; (v) in the case of clause (c) above,
restrictions contained in security agreements or mortgages securing Indebtedness
of a Restricted Subsidiary to the extent such restrictions restrict the transfer
of the property subject to such security agreements or mortgages; and (vi) any
restriction with respect to a Restricted Subsidiary imposed pursuant to an
agreement entered into for the sale or disposition of all or substantially all
the Capital Stock or assets of such Restricted Subsidiary pending the closing of
such sale or disposition.
    
 
   
     LIMITATION ON SALES OF ASSETS AND SUBSIDIARY STOCK. (a) In the event and to
the extent that the Net Available Cash received by the Company or any Restricted
Subsidiary from one or more Asset Dispositions occurring on or after the Issue
Date in any period of 12 consecutive months exceeds 15% of Adjusted Consolidated
Net Tangible Assets as of the beginning of such 12-month period, then the
Company shall (i) within 180 days (in the case of (A) below) or 18 months (in
the case of (B) below) after the date such Net Available Cash so received
exceeds such 15% of Adjusted Consolidated Net Tangible Assets (A) apply an
amount equal to such excess Net Available Cash to repay Senior Indebtedness of
the Company or a Subsidiary Guarantor or Indebtedness of a Restricted Subsidiary
that is not a Subsidiary Guarantor, in each case owing to a Person other than
the Company or any Affiliate of the Company or (B) invest an equal amount, or
the amount not so applied pursuant to clause (A), in Additional Assets or
Permitted Business Investments or (ii) apply such excess Net Available Cash (to
the extent not applied pursuant to clause (i)) as provided in the following
paragraphs of this covenant. The amount of such excess Net Available Cash
required to be applied during the applicable period and not applied as so
required by the end of such period shall constitute "Excess Proceeds."
    
 
   
     (b) If, as of the first day of any calendar month, the aggregate amount of
Excess Proceeds not theretofore subject to an Excess Proceeds Offer (as defined
below) totals at least $10 million, the Company must, not later than the
fifteenth Business Day of such month, make an offer (an "Excess Proceeds Offer")
to purchase from the Holders on a pro rata basis an aggregate principal amount
of Notes equal to the Excess Proceeds (rounded down to the nearest multiple of
$1,000) on such date, at a purchase price equal to 100% of the principal amount
of such Notes, plus, in each case, accrued interest (if any) to the date of
purchase (the "Excess Proceeds Payment"), but, if the terms of any Indebtedness
ranking pari passu with the Notes require that an offer be made for such
Indebtedness contemporaneously with the Excess Proceeds Offer, then the Excess
Proceeds shall be prorated between the Excess Proceeds Offer and such pari passu
offer in accordance with the aggregate outstanding principal amounts of the
Notes and such pari passu Indebtedness, and the aggregate principal amount of
Notes for which the Excess Proceeds Offer is made shall be reduced accordingly.
    
 
     The Company will comply, to the extent applicable, with the requirements of
Section 14(e) of the Exchange Act and any other securities laws or regulations
thereunder in the event that such Excess Proceeds are received by the Company
under this covenant and the Company is required to repurchase Notes as described
above. To the extent that the provisions of any securities laws or regulations
conflict with the
 
                                       88
<PAGE>   92
 
provisions of this covenant, the Company shall comply with the applicable
securities laws and regulations and shall not be deemed to have breached its
obligations under this covenant by virtue thereof.
 
   
     (c) In the event of an Asset Disposition by the Company or any Restricted
Subsidiary that consists of a sale of hydrocarbons and results in Production
Payments, the Company or such Restricted Subsidiary shall apply an amount equal
to the Net Available Cash received by the Company or such Restricted Subsidiary
to (i) reduce Senior Indebtedness of the Company or a Subsidiary Guarantor or
Indebtedness of a Restricted Subsidiary that is not a Subsidiary Guarantor, in
each case owing to a Person other than the Company or any Affiliate of the
Company, within 180 days after the date such Net Available Cash is so received,
or (ii) invest in Additional Assets or Permitted Business Investments within 18
months after the date such Net Available Cash is so received.
    
 
   
     LIMITATION ON AFFILIATE TRANSACTIONS. (a) The Company shall not, and shall
not permit any Restricted Subsidiary to, enter into or permit to exist any
transaction (including the purchase, sale, lease or exchange of any property,
employee compensation arrangements or the rendering of any service) with any
Affiliate of the Company (an "Affiliate Transaction") unless the terms thereof
(1) are no less favorable to the Company or such Restricted Subsidiary than
those that could be obtained at the time of such transaction in arm's-length
dealings with a Person who is not such an Affiliate, (2) if such Affiliate
Transaction involves an amount in excess of $10 million, is set forth in writing
and has been approved by the Board of Directors, including a majority of the
members of the Board of Directors having no personal stake in such Affiliate
Transaction, and (3) if such Affiliate Transaction involves an amount in excess
of $20 million, has been determined by a nationally recognized investment
banking firm or other qualified independent appraiser to be fair, from a
financial standpoint, to the Company and its Restricted Subsidiaries.
    
 
   
     (b) The provisions of the foregoing paragraph (a) shall not prohibit (i)
any sale of hydrocarbons or other mineral products to an Affiliate of the
Company or the entering into or performance of Oil and Gas Hedging Contracts,
gas gathering, transportation or processing contracts or oil or natural gas
marketing or exchange contracts with an Affiliate of the Company, in each case,
in the ordinary course of business, so long as the terms of any such transaction
are approved by a majority of the members of the Board of Directors who are
disinterested with respect to such transaction, (ii) the sale to an Affiliate of
the Company of Capital Stock of the Company or DRI that does not constitute
Disqualified Stock, and the sale to an Affiliate of the Company of Indebtedness
(including Disqualified Stock) of the Company or DRI in connection with an
offering of such Indebtedness in a market transaction and on terms substantially
identical to those of other purchasers in such market transaction, (iii)
transactions contemplated by any employment agreement or other compensation plan
or arrangement existing on the Issue Date or thereafter entered into by DRI, the
Company or any of its Restricted Subsidiaries in the ordinary course of
business, (iv) the payment of reasonable fees to directors of DRI, the Company
and its Restricted Subsidiaries who are not employees of DRI, the Company or any
Restricted Subsidiary, (v) transactions between or among DRI, the Company and
its Restricted Subsidiaries, (vi) transactions between DRI, the Company or any
of its Restricted Subsidiaries and Persons that are controlled (as defined in
the definition of "Affiliate") by the Company (an "Unrestricted Affiliate);
provided that no other Person that controls (as so defined) or is under common
control with the Company holds any Investments in such Unrestricted Affiliate;
(vii) Restricted Payments that are permitted by the provisions of the Indenture
described above under the caption "-- Limitation on Restricted Payments", and
(viii) loans or advances to employees in the ordinary course of business and
approved by the Company's Board of Directors in an aggregate principal amount
not to exceed $2.5 million outstanding at any one time.
    
 
     CHANGE OF CONTROL. (a) Upon the occurrence of a Change of Control, each
Holder shall have the right to require that the Company repurchase such Holder's
Notes at a purchase price in cash equal to 101% of the principal amount thereof
plus accrued and unpaid interest, if any, to the date of purchase (subject to
the right of Holders of record on the relevant record date to receive interest
on the relevant interest payment date), in accordance with the terms
contemplated in paragraph (b) below.
 
     In the event that at the time of such Change of Control the terms of the
Indebtedness under the Credit Agreement restrict or prohibit the repurchase of
Notes pursuant to this covenant, then prior to the mailing of the notice to
Holders provided for in paragraph (b) below, but in any event within 30 days
following any
 
                                       89
<PAGE>   93
 
   
Change of Control, the Company shall (i) repay in full the Indebtedness under
the Credit Agreement or (ii) obtain the requisite consent under the agreements
governing the Indebtedness under the Credit Agreement to permit the repurchase
of the Notes as provided for in paragraph (b) below.
    
 
     (b) Within 30 days following a Change of Control, the Company shall mail a
notice to each Holder with a copy to the Trustee stating: (1) that a Change of
Control has occurred and that such Holder has the right to require the Company
to purchase such Holder's Notes at a purchase price in cash equal to 101% of the
principal amount thereof plus accrued and unpaid interest, if any, to the date
of purchase (subject to the right of Holders of record on the relevant record
date to receive interest on the relevant interest payment date); (2) the
circumstances and relevant facts regarding such Change of Control (including
information with respect to pro forma historical income, cash flow and
capitalization after giving effect to such Change of Control); (3) the
repurchase date (which shall be no earlier than 30 days nor later than 60 days
from the date such notice is mailed); and (4) the instructions determined by the
Company, consistent with this covenant, that a Holder must follow in order to
have its Notes purchased.
 
     (c) The Company shall comply, to the extent applicable, with the
requirements of Section 14(e) of the Exchange Act and any other securities laws
or regulations in connection with the repurchase of Notes pursuant to this
covenant. To the extent that the provisions of any securities laws or
regulations conflict with the provisions of this covenant, the Company shall
comply with the applicable securities laws and regulations and shall not be
deemed to have breached its obligations under this covenant by virtue thereof.
 
     The Change of Control purchase feature is a result of negotiations between
the Company and the Underwriters. Management has no present intention to engage
in a transaction involving a Change of Control, although it is possible that the
Company would decide to do so in the future. Subject to the limitations
discussed below, the Company could, in the future, enter into certain
transactions, including acquisitions, refinancing or other recapitalizations,
that would not constitute a Change of Control under the Indenture, but that
could increase the amount of indebtedness outstanding at such time or otherwise
affect the Company's capital structure or credit ratings. Restrictions on the
ability of the Company to incur additional Indebtedness are contained in the
covenants described under "-- Limitation on Indebtedness", "-- Limitation on
Liens" and "-- Limitation on Sale/Leaseback Transactions". Such restrictions can
only be waived with the consent of the holders of a majority in principal amount
of the Notes then outstanding. Except for the limitations contained in such
covenants, however, the Indenture will not contain any covenants or provisions
that may afford holders of the Notes protection in the event of a highly
leveraged transaction.
 
     The Credit Agreement prohibits the Company from purchasing any Notes and
also provides that the occurrence of certain change of control events with
respect to the Company would constitute a default thereunder. In the event a
Change of Control occurs at a time when the Company is prohibited from
purchasing Notes, the Company could seek the consent of its lenders to the
purchase of Notes or could attempt to refinance the borrowings that contain such
prohibition. If the Company does not obtain such a consent or repay such
borrowings, the Company will remain prohibited from purchasing Notes. In such
case, the Company's failure to purchase tendered Notes would constitute an Event
of Default under the Indenture which would, in turn, constitute a default under
the Credit Agreement. In such circumstances, the subordination provisions in the
Indenture would likely restrict payment to the Holders of Notes.
 
     Future indebtedness of the Company may contain prohibitions on the
occurrence of certain events that would constitute a Change of Control or
require such indebtedness to be repurchased upon a Change of Control. Moreover,
the exercise by the Holders of their right to require the Company to repurchase
the Notes could cause a default under such indebtedness, even if the Change of
Control itself does not, due to the financial effect of such repurchase on the
Company. Finally, the Company's ability to pay cash to the holders of Notes
following the occurrence of a Change of Control may be limited by the Company's
then existing financial resources. There can be no assurance that sufficient
funds will be available when necessary to make any required repurchases.
 
     The provisions under the Indenture relating to the Company's obligation to
make an offer to repurchase the Notes as a result of a Change of Control may be
waived or modified with the written consent of the holders of a majority in
principal amount of the Notes.
 
                                       90
<PAGE>   94
 
     The Company will not be required to make an offer to purchase the Notes as
a result of a Change of Control if a third party (i) makes such offer in the
manner, at the times and otherwise in compliance with the requirements set forth
in the Indenture relating to the Company's obligations to make such an offer and
(ii) purchases all Notes validly tendered and not withdrawn under such an offer.
 
   
     LIMITATION ON THE SALE OR ISSUANCE OF CAPITAL STOCK OF RESTRICTED
SUBSIDIARIES. The Company shall not sell or otherwise dispose of any shares of
Capital Stock of a Restricted Subsidiary, and shall not permit any Restricted
Subsidiary, directly or indirectly, to issue or sell or otherwise dispose of any
shares of its Capital Stock except (i) to the Company or a Wholly Owned
Subsidiary, (ii) if, immediately after giving effect to such issuance, sale or
other disposition, neither the Company nor any of its Subsidiaries own any
Capital Stock of such Restricted Subsidiary, (iii) if, immediately after giving
effect to such issuance, sale or other disposition, such Restricted Subsidiary
would no longer constitute a Restricted Subsidiary and any Investment in such
Person remaining after giving effect thereto would have been permitted to be
made under the covenant described under "-- Limitation on Restricted Payments"
if made on the date of such issuance, sale or other disposition, or (iv) to the
extent such shares represent directors' qualifying shares or shares required by
applicable law to be held by a Person other than the Company or Restricted
Subsidiary.
    
 
   
     LIMITATION ON LIENS. The Company shall not, and shall not permit any
Restricted Subsidiary to, directly or indirectly, enter into, create, incur,
assume or suffer to exist any Lien on or with respect to any property of the
Company or such Restricted Subsidiary, whether owned on the Issue Date or
acquired after the Issue Date, or any interest therein or any income or profits
therefrom, unless the Notes or any Subsidiary Guaranty of such Restricted
Subsidiary, as applicable, are secured equally and ratably with (or prior to)
any and all other obligations secured by such Lien, except that the Company and
its Restricted Subsidiaries may enter into, create, incur, assume or suffer to
exist Permitted Liens and Liens securing Senior Indebtedness.
    
 
   
     MERGER AND CONSOLIDATION. The Company shall not consolidate with or merge
with or into, or convey, transfer or lease , in one transaction or a series of
transactions, all or substantially all the assets of the Company and its
Restricted Subsidiaries, taken as a whole, to, any Person, unless: (i) (A) the
resulting, surviving or transferee Person (the "Successor Company") shall be a
Person organized and existing under the laws of the United States of America,
any State thereof or the District of Columbia and (B) the Successor Company (if
not the Company) shall expressly assume, by an indenture supplemental thereto,
executed and delivered to the Trustee, in form satisfactory to the Trustee, all
the obligations of the Company under the Notes and the Indenture; (ii)
immediately after giving effect to such transaction (and treating any
Indebtedness which becomes an obligation of the Successor Company or any
Subsidiary as a result of such transaction as having been Incurred by such
Successor Company or such Subsidiary at the time of such transaction), no
Default shall have occurred and be continuing, (iii) immediately after giving
effect to such transaction, the Successor Company would be able to Incur an
additional $1.00 of Indebtedness pursuant to paragraph (a); (iv) immediately
after giving effect to such transaction, the Successor Company shall have
Adjusted Consolidated Net Tangible Assets that are not less than the Adjusted
Consolidated Net Tangible Assets prior to such transaction; (v) in the case of a
conveyance, transfer or lease of all or substantially all the assets of the
Company and its Restricted Subsidiaries, taken as a whole, such assets shall
have been so conveyed, transferred or leased as an entirety or virtually as an
entirety to one Person; and (vi) the Company shall have complied with certain
additional conditions set forth in the Indenture; provided, however, that
clauses (iii) and (iv) shall not be applicable to any such transaction solely
between DRI, the Company and any Restricted Subsidiary; provided further,
however, that clause (i)(A) shall not be applicable to any merger of the Company
with and into DRI in connection with a transaction in which DRI, substantially
concurrently with such merger, becomes (or is merged with and into) a Person
organized and existing under the laws of the United States of America, any State
thereof or the District of Columbia.
    
 
     The Successor Company shall be the successor to the Company and shall
succeed to, and be substituted for, and may exercise every right and power of,
the Company under the Indenture, but the predecessor Company in the case of a
lease shall not be released from the obligation to pay the principal of and
interest on the Notes.
 
                                       91
<PAGE>   95
 
   
     The Company will not permit any Subsidiary Guarantor to consolidate with or
merge with or into, or convey, transfer or lease, in one transaction or a series
of transactions, all or substantially all of its assets to any Person unless:
(i) the resulting, surviving or transferee Person (if not such Subsidiary) shall
be a Person organized and existing under the laws of the jurisdiction under
which such Subsidiary was organized or under the laws of the United States of
America, or any State thereof or the District of Columbia, and such Person shall
expressly assume, by executing a Guaranty Agreement, all the obligations of such
Subsidiary, if any, under its Subsidiary Guaranty; (ii) immediately after giving
effect to such transaction or transactions on a pro forma basis (and treating
any Indebtedness which becomes an obligation of the resulting, surviving or
transferee Person as a result of such transaction as having been issued by such
Person at the time of such transaction), no Default shall have occurred and be
continuing; (iii) in the case of a conveyance, transfer or lease of all or
substantially all the assets of a Subsidiary Guarantor, such assets shall have
been so conveyed, transferred or leased as an entirety or virtually as an
entirety to one Person; and (iv) the Company shall have complied with certain
additional conditions contained in the Indenture. The provisions of clauses (i)
and (ii) above shall not apply to any one or more transactions which constitute
an Asset Disposition if the Company has complied with the applicable provisions
of the covenant described under "-- Limitation on Sales of Assets and Subsidiary
Stock" above.
    
 
   
     Pursuant to the Indenture, DRI will covenant not to merge with or into, or
convey, transfer or lease, in one transaction or a series of transactions, all
or substantially all of its assets to any Person unless; (i) the resulting,
surviving or transferee Person (if not DRI) shall be a Person organized and
existing under the laws of Canada or any province thereof or under the laws of
the United States of America, or any State thereof or the District of Columbia,
and such Person shall expressly assume, by executing a Guaranty Agreement, all
the obligations of DRI, if any, under the DRI Guaranty, (ii) immediately after
giving effect to such transaction or transactions on a pro forma basis (and
treating any Indebtedness which becomes an obligation of the resulting,
surviving or transferee Person as a result of such transaction as having been
issued by such Person at the time of such transaction), no Default shall have
occurred and be continuing; (iii) in the case of a conveyance, transfer or lease
of all or substantially all the assets of DRI, such assets shall have been so
conveyed, transferred or leased as an entirety or virtually as an entirety to
one Person; and (iv) the Company shall have complied with certain additional
conditions contained in the Indenture.
    
 
   
     SEC REPORTS. Notwithstanding that the Company may not at any time be
subject to the reporting requirements of Section 13 or 15(d) of the Exchange
Act, the Company shall file with the SEC and provide the Trustee and Noteholders
with such annual reports and such information, documents and other reports as
are specified in Sections 13 and 15(d) of the Exchange Act and applicable to a
U.S. corporation subject to such Sections, such information, documents and other
reports to be so filed and provided at the times specified for the filing of
such information, documents and reports under such Sections; provided, however,
that so long as DRI is a Guarantor of the Notes, the reports, information and
other documents required to be filed and provided as described hereunder may, at
the Company's option, be filed by and be those of DRI rather than the Company;
provided further, however, that in the event DRI conducts any business or holds
any significant assets other than the capital stock of the Company at the time
of filing and providing any such report, information or other document
containing financial statements of DRI, DRI shall include in such report,
information or other document summarized financial information (as defined in
Rule 1-02(bb) of Regulation S-X promulgated by the SEC) with respect to the
Company.
    
 
   
     FUTURE SUBSIDIARY GUARANTORS. The Company shall cause each Restricted
Subsidiary that represents at least 10% of the book assets of, or 10% of the
ACNTA of, the Company and its Restricted Subsidiaries, taken as a whole, and
that has an aggregate of $15.0 million or more of Indebtedness and Preferred
Stock outstanding at any time to promptly Guarantee the Notes pursuant to a
Subsidiary Guaranty on the terms and conditions set forth in the Indenture.
    
 
DEFAULTS
 
     An Event of Default is defined in the Indenture as (i) a default in the
payment of interest on the Notes when due, continued for 30 days, (ii) a default
in the payment of principal of any Note when due at its Stated Maturity, upon
optional redemption, upon required repurchase, upon declaration or otherwise,
(iii) the failure
 
                                       92
<PAGE>   96
 
   
by the Company to comply with its obligations under "-- Certain
Covenants -- Merger and Consolidation" above, (iv) the failure by the Company to
comply for 30 days after notice with any of its obligations in the covenants
described above under "-- Certain Covenants," "-- Limitation on Indebtedness,"
"-- Limitation on Restricted Payments," "-- Limitation on Restrictions on
Distributions from Restricted Subsidiaries," "-- Limitation on Sales of Assets
and Subsidiary Stock" (other than a failure to purchase Notes), "-- Limitation
on Affiliate Transactions," "-- Limitation on the Sale or Issuance of Capital
Stock of Restricted Subsidiaries," "-- Change of Control" (other than a failure
to purchase Notes), "-- Limitation on Liens" or "Future Subsidiary Guarantors,"
(v) the failure by the Company to comply for 60 days after notice with its other
agreements contained in the Indenture, (vi) Indebtedness of the Company or the
Guarantor (other than Limited Recourse Production Payments and Non-recourse
Purchase Money Indebtedness) is not paid within any applicable grace period
after final maturity or the maturity of such Indebtedness is accelerated by the
holders thereof because of a default (and such acceleration is not rescinded or
annulled) and the total amount of such Indebtedness unpaid or accelerated
exceeds $10 million (the "cross acceleration provision"), (vii) certain events
of bankruptcy, insolvency or reorganization of the Company or a Significant
Subsidiary (the "bankruptcy provisions"), (viii) any judgment or decree for the
payment of money in an uninsured or unindemnified amount in excess of $10
million or its foreign currency equivalent at the time is rendered against the
Company or a Significant Subsidiary, remains outstanding for a period of 60 days
following such judgment and is not discharged, waived, bonded or stayed within
10 days after notice (the "judgment default provision") or (ix) any Guaranty
ceases to be in full force and effect (other than in accordance with the terms
thereof) or a Guarantor denies or disaffirms its obligations under its Guaranty
if such default continues for a period of ten days after notice thereof to the
Company (the "guaranty default provision"). However, a default under clauses
(iv), (v), (viii) and (ix) will not constitute an Event of Default until the
Trustee or the holders of 25% in principal amount of the outstanding Notes
notify the Company of the default and the Company does not cure such default
within the time specified after receipt of such notice.
    
 
     If an Event of Default occurs and is continuing, the Trustee or the holders
of at least 25% in principal amount of the outstanding Notes may declare the
principal of and accrued but unpaid interest on all the Notes to be due and
payable. Upon such a declaration, such principal and interest shall be due and
payable immediately. If an Event of Default relating to certain events of
bankruptcy, insolvency or reorganization of the Company occurs and is
continuing, the principal of and interest on all the Notes will ipso facto
become and be immediately due and payable without any declaration or other act
on the part of the Trustee or any holders of the Notes. Under certain
circumstances, the holders of a majority in principal amount of the outstanding
Notes may rescind any such acceleration with respect to the Notes and its
consequences.
 
     Subject to the provisions of the Indenture relating to the duties of the
Trustee, in case an Event of Default occurs and is continuing, the Trustee will
be under no obligation to exercise any of the rights or powers under the
Indenture at the request or direction of any of the holders of the Notes unless
such holders have offered to the Trustee reasonable indemnity or security
against any loss, liability or expense. Except to enforce the right to receive
payment of principal, premium (if any) or interest when due, no holder of a Note
may pursue any remedy with respect to the Indenture or the Notes unless (i) such
holder has previously given the Trustee notice that an Event of Default is
continuing, (ii) holders of at least 25% in principal amount of the outstanding
Notes have requested the Trustee to pursue the remedy, (iii) such holders have
offered the Trustee reasonable security or indemnity against any loss, liability
or expense, (iv) the Trustee has not complied with such request within 60 days
after the receipt thereof and the offer of security or indemnity and (v) the
holders of a majority in principal amount of the outstanding Notes have not
given the Trustee a direction inconsistent with such request within such 60-day
period. Subject to certain restrictions, the holders of a majority in principal
amount of the outstanding Notes are given the right to direct the time, method
and place of conducting any proceeding for any remedy available to the Trustee
or of exercising any trust or power conferred on the Trustee. The Trustee,
however, may refuse to follow any direction that conflicts with law or the
Indenture or that the Trustee determines is unduly prejudicial to the rights of
any other holder of a Note or that would involve the Trustee in personal
liability.
 
     The Indenture provides that if a Default occurs and is continuing and is
known to the Trustee, the Trustee must mail to each holder of the Notes notice
of the Default within 90 days after it occurs. Except in
 
                                       93
<PAGE>   97
 
the case of a Default in the payment of principal of or interest on any Note,
the Trustee may withhold notice if and so long as a committee of its trust
officers determines that withholding notice is not opposed to the interest of
the holders of the Notes. In addition, the Company is required to deliver to the
Trustee, within 120 days after the end of each fiscal year, a certificate
indicating whether the signers thereof know of any Default that occurred during
the previous year. The Company also is required to deliver to the Trustee,
within 30 days after the occurrence thereof, written notice of any event which
would constitute certain Defaults, their status and what action the Company is
taking or proposes to take in respect thereof.
 
AMENDMENTS AND WAIVERS
 
   
     Subject to certain exceptions, the Indenture may be amended with the
consent of the holders of a majority in principal amount of the Notes then
outstanding (including consents obtained in connection with a tender offer or
exchange for the Notes) and any past default or compliance with any provisions
may also be waived with the consent of the holders of a majority in principal
amount of the Notes then outstanding. However, without the consent of each
holder of an outstanding Note affected thereby, no amendment may, among other
things, (i) reduce the amount of Notes whose holders must consent to an
amendment, (ii) reduce the rate of or extend the time for payment of interest on
any Note, (iii) reduce the principal of or extend the Stated Maturity of any
Note, (iv) reduce the premium payable upon the redemption of any Note or change
the time at which any Note may be redeemed as described under "-- Optional
Redemption", (v) make any Note payable in money other than that stated in the
Note, (vi) impair the right of any holder of the Notes to receive payment of
principal of and interest on such holder's Notes on or after the due dates
therefor or to institute suit for the enforcement of any payment on or with
respect to such holder's Notes, (vii) make any change in the amendment
provisions which require each holder's consent or in the waiver provisions,
(viii) make any change to the subordination provisions of the Indenture that
would adversely affect the Noteholders or (ix) make any change in any Guaranty
that could adversely affect such holder.
    
 
   
     Without the consent of any holder of the Notes, the Company, the Guarantors
and the Trustee may amend the Indenture to cure any ambiguity, omission, defect
or inconsistency, to provide for the assumption by a successor corporation of
the obligations of the Company or the Guarantors under the Indenture, to provide
for uncertificated Notes in addition to or in place of certificated Notes
(provided that the uncertificated Notes are issued in registered form for
purposes of Section 163(f) of the Code, or in a manner such that the
uncertificated Notes are described in Section 163(f)(2)(B) of the Code), to make
any change in the subordination provisions of the Indenture that would limit or
terminate the benefits available to any holder of Senior Indebtedness of the
Company or any Guarantor thereunder, to add guarantees with respect to the Notes
(including any Subsidiary Guaranty), to secure the Notes, to add to the
covenants of the Company for the benefit of the holders of the Notes or to
surrender any right or power conferred upon the Company or any Guarantor, to
make any change that does not adversely affect the rights of any holder of the
Notes or to comply with any requirement of the SEC in connection with the
qualification of the Indenture under the Trust Indenture Act. However, no
amendment may be made to the subordination provisions of the Indenture that
adversely affects the rights of any holder of Senior Indebtedness of the Company
or the Guarantor then outstanding unless the holders of such Senior Indebtedness
(or their Representative) consents to such change.
    
 
     The consent of the holders of the Notes is not necessary under the
Indenture to approve the particular form of any proposed amendment. It is
sufficient if such consent approves the substance of the proposed amendment.
 
     After an amendment under the Indenture becomes effective, the Company is
required to mail to holders of the Notes a notice briefly describing such
amendment. However, the failure to give such notice to all holders of the Notes,
or any defect therein, will not impair or affect the validity of the amendment.
 
TRANSFER
 
     The Notes will be issued in registered form and will be transferable only
upon the surrender of the Notes being transferred for registration of transfer.
The Company may require payment of a sum sufficient to cover any tax, assessment
or other governmental charge payable in connection with certain transfers and
exchanges.
 
                                       94
<PAGE>   98
 
DEFEASANCE
 
   
     The Company at any time may terminate all its obligations under the Notes
and the Indenture ("legal defeasance"), except for certain obligations,
including those respecting the defeasance trust and obligations to register the
transfer or exchange of the Notes, to replace mutilated, destroyed, lost or
stolen Notes and to maintain a registrar and paying agent in respect of the
Notes. The Company at any time may terminate its obligations under the covenants
described under "-- Certain Covenants" (other than the covenant described under
"-- Merger and Consolidation"), the operation of the cross acceleration
provision, the bankruptcy provisions with respect to Significant Subsidiaries,
the judgment default provision and the guaranty default provision described
under "-- Defaults" above and the limitations contained in clauses (iii) and
(iv) under the first paragraph of, and in the third and fourth paragraphs of,
"-- Certain Covenants -- Merger and Consolidation" above ("covenant
defeasance").
    
 
   
     The Company may exercise its legal defeasance option notwithstanding its
prior exercise of its covenant defeasance option. If the Company exercises its
legal defeasance option, payment of the Notes may not be accelerated because of
an Event of Default with respect thereto. If the Company exercises its covenant
defeasance option, payment of the Notes may not be accelerated because of an
Event of Default specified in clause (iv), (vi), (vii) (with respect only to
Significant Subsidiaries) or (viii) under "-- Defaults" above or because of the
failure of the Company to comply with clause (iii) or (iv) under the first of
paragraph of, or with the third and fourth paragraphs of, "-- Certain
Covenants -- Merger and Consolidation" above. If the Company exercises its legal
defeasance option or its covenant defeasance option, each Guarantor will be
released from all its obligations with respect to its Guaranty.
    
 
     In order to exercise either defeasance option, the Company must irrevocably
deposit in trust (the "defeasance trust") with the Trustee money or U.S.
Government Obligations for the payment of principal and interest on the Notes to
redemption or maturity, as the case may be, and must comply with certain other
conditions, including delivery to the Trustee of an Opinion of Counsel to the
effect that holders of the Notes will not recognize income, gain or loss for
Federal income tax purposes as a result of such deposit and defeasance and will
be subject to Federal income tax on the same amount and in the same manner and
at the same times as would have been the case if such deposit and defeasance had
not occurred (and, in the case of legal defeasance only, such Opinion of Counsel
must be based on a ruling of the Internal Revenue Service or other change in
applicable Federal income tax law).
 
CONCERNING THE TRUSTEE
 
   
     Chase Bank of Texas, National Association is to be the Trustee under the
Indenture and has been appointed by the Company as Registrar and Paying Agent
with regard to the Notes.
    
 
     The Holders of a majority in principal amount of the outstanding Notes will
have the right to direct the time, method and place of conducting any proceeding
for exercising any remedy available to the Trustee, subject to certain
exceptions. The Indenture provides that if an Event of Default occurs (and is
not cured), the Trustee will be required, in the exercise of its power, to use
the degree of care of a prudent man in the conduct of his own affairs. Subject
to such provisions, the Trustee will be under no obligation to exercise any of
its rights or powers under the Indenture at the request of any Holder of Notes,
unless such Holder shall have offered to the Trustee security and indemnity
satisfactory to it against any loss, liability or expense and then only to the
extent required by the terms of the Indenture.
 
GOVERNING LAW
 
   
     The Indenture provides that it (including the Guaranties) and the Notes
will be governed by, and construed in accordance with, the laws of the State of
New York without giving effect to applicable principles of conflicts of law to
the extent that the application of the law of another jurisdiction would be
required thereby.
    
 
                                       95
<PAGE>   99
 
               [D] CERTAIN U.S. FEDERAL INCOME TAX CONSIDERATIONS
 
   
     The following is a general discussion of the principal United States
Federal income tax consequences of the purchase, ownership and disposition of
the Notes to initial purchasers thereof who are United States Holders (as
defined below) and the principal United States Federal income and estate tax
consequences of the purchase, ownership and disposition of the Notes to initial
purchasers who are Foreign Holders (as described below). This discussion is
based on currently existing provisions of the Code, existing, temporary and
proposed Treasury regulations promulgated thereunder, and administrative and
judicial interpretations thereof, all as in effect or proposed on the date
hereof and all of which are subject to change, possible with retroactive effect,
or different interpretations. This discussion does not address the tax
consequences to subsequent purchasers of Notes and is limited to purchasers who
hold the Notes as capital assets, within the meaning of section 1221 of the
Code. This discussion also does not address the tax consequences to Foreign
Holders that are subject to United States Federal income tax on a net basis on
income realized with respect to a Note because such income is effectively
connected with the conduct of a United States trade or business. Such Foreign
holders are generally taxed in a similar manner to United States Holders, but
certain special rules do apply. Moreover, this discussion is for general
information only and does not address all of the tax consequences that may be
relevant to particular initial purchasers in light of their personal
circumstances or to certain types of initial purchasers (such as certain
financial institutions, insurance companies, tax-exempt entities, dealers in
securities or persons who have hedged the risk of owning a Note).
    
 
   
     PROSPECTIVE PURCHASERS ARE URGED TO CONSULT THEIR OWN TAX ADVISORS AS TO
THE PARTICULAR TAX CONSEQUENCES TO THEM OF THE PURCHASE, OWNERSHIP AND
DISPOSITION OF THE NOTES, INCLUDING THE APPLICABILITY OF ANY UNITED STATES
FEDERAL TAX LAWS OR ANY STATE, LOCAL OR FOREIGN TAX LAWS, AND ANY CHANGES (OR
PROPOSED CHANGES) IN APPLICABLE TAX LAWS OR INTERPRETATIONS THEREOF.
    
 
UNITED STATES FEDERAL INCOME TAXATION OF UNITED STATES HOLDERS
 
   
     As used herein, the term "United States Holder" means a holder of a Note
that is, for United States federal income tax purposes, (a) a citizen or
resident of the United States, (b) a corporation, partnership or other entity
created or organized in or under the laws of the United States or any political
subdivision thereof, (c) an estate or trust described in Section 7701(a)(30) of
the Code, or (d) a person whose worldwide income or gain is subject to U.S.
Federal income taxation on a net income basis.
    
 
   
     PAYMENT OF INTEREST ON NOTES. Interest paid or payable on a Note will be
taxable to a United States Holder as ordinary interest income, generally at the
time it is received or accrued, in accordance with such holder's regular method
of accounting for United States Federal income tax purposes.
    
 
   
     SALE, EXCHANGE OR RETIREMENT OF NOTES. Upon the sale, redemption,
retirement at maturity or other disposition of a Note, a United States Holder
generally will recognize taxable gain or loss equal to the difference between
the sum of cash plus the fair market value of all other property received on
such disposition (except to the extent such cash or property is attributable to
accrued but unpaid interest, which will be taxable as ordinary income) and such
United States Holder's adjusted tax basis in the Note. A United States Holder's
adjusted tax basis in a Note generally will equal the cost of the Note to such
United States Holder, less any principal payments received by such United States
Holder.
    
 
     Gain or loss recognized on the disposition of a Note generally will be
capital gain or loss and will be long-term capital gain or loss if, at the time
of such disposition, the United States Holder's holding period for the Note is
more than one year. Under the Taxpayer Relief Act of 1997, lower tax rates apply
to the sale or exchange of capital assets by individuals who have held such
assets for more than 18 months.
 
     BACKUP WITHHOLDING AND INFORMATION REPORTING. Backup withholding and
information reporting requirements may apply to certain payments of principal,
premium, if any, and interest on a Note, and to proceeds of the sale or
redemption of a Note before maturity. The Company, its agent, a broker, the
Trustee or any paying agent, as the case may be, will be required to withhold
from any payment that is subject to backup withholding
 
                                       96
<PAGE>   100
 
   
a tax equal to 31% of such payment if the United States Holder fails to (i)
furnish his, her or its taxpayer identification number (social security or
employer identification number), (ii) certify that such number is correct, (iii)
certify that such holder is not subject to backup withholding or (iv) otherwise
comply with the applicable requirements of the backup withholding rules. Certain
United States Holders, including all corporations, are not subject to backup
withholding and information reporting requirements. Any amounts withheld under
the backup withholding rules from a payment to a United States Holder will be
allowed as a credit against such United States Holder's United States Federal
income tax liability and may entitle the holder to a refund, provided that the
required information is furnished to the Internal Revenue Service ("IRS").
    
 
UNITED STATES FEDERAL INCOME TAXATION OF FOREIGN HOLDERS
 
   
     As used herein, the term "Foreign Holder" means a holder of a Note that is,
for United States Federal income tax purposes, (a) a nonresident alien
individual, (b) a foreign corporation, (c) a nonresident alien fiduciary of a
foreign estate or trust or (d) a foreign partnership.
    
 
   
     PAYMENT OF INTEREST ON NOTES. In general, payments of interest received by
a Foreign Holder will not be subject to a United States Federal withholding tax,
provided that (i) (a) the Foreign Holder does not actually or constructively own
10% or more of the total combined voting power of all classes of stock of DMI
entitled to vote within the meaning of section 871(h)(g) of the Code, (b) the
Foreign Holder is not a controlled foreign corporation that is related to DMI
actually or constructively through stock ownership, (c) such interest payments
are not effectively connected with the conduct by the Foreign Holder of a trade
or business within the United States, and (d) either (I) the beneficial owner of
the Note, under penalties of perjury, provides DMI or its agent with such
beneficial owner's name and address and certifies on IRS Form W-8 (or a suitable
substitute form) that it is not a United States Holder or (II) a securities
clearing organization, bank or other financial institution that holds customers'
securities in the ordinary course of its trade or business (a "financial
institution") holds the Notes and provides a statement to DMI or its agent under
penalties of perjury in which it certifies that an IRS Form W-8 (or a suitable
substitute) has been received by it from the beneficial owner of the Notes or
qualifying intermediary and furnishes DMI or its agent a copy thereof; and (ii)
the Foreign Holder is entitled to the benefits of an income tax treaty under
which interest on the Notes is exempt from United States Federal withholding tax
and the Foreign Holder or such Foreign Holder's agent provides a properly
executed IRS Form 1001 claiming the exemption. Payments of interest not exempt
from United States Federal withholding tax as described above will be subject to
such withholding tax at the rate of 30% (subject to reduction under an
applicable income tax treaty).
    
 
   
     SALE, EXCHANGE OR RETIREMENT OF THE NOTES. A Foreign Holder generally will
not be subject to United States Federal income tax (and generally no tax will be
withheld) with respect to gain realized on the sale, exchange, redemption,
retirement at maturity or other disposition of a Note unless the Foreign Holder
is an individual who is present in the United States for a period or periods
aggregating 183 or more days in the taxable year of the disposition and,
generally, either has a "tax home" or an "office or other fixed place of
business" in the United States or such gains are effectively connected with the
conduct by the Foreign Holder of a trade or business within the United States.
    
 
   
     BACKUP WITHHOLDING AND INFORMATION REPORTING. Backup withholding and
information reporting requirements do not apply to payments of interest made by
DMI or a paying agent to Foreign Holders if the certification described above
under "-- United States Federal Income Taxation of Foreign Holders -- Payment of
Interest on Notes" is received, provided that the payor does not have actual
knowledge that the holder is a United States Holder. If any payments of
principal and interest are made to the beneficial owner of a Note by or through
the foreign office of a foreign custodian, foreign nominee or the foreign agent
of such beneficial owner, or if the foreign office of a foreign "broker" (as
defined in applicable Treasury regulations) pays the proceeds of the sale of a
Note to the seller thereof, backup withholding information reporting will not
apply. Information reporting requirements (but not backup withholding) will
apply, however, to a payment by a foreign office of a broker that is a United
States person, that derives 50% or more of its gross income for certain periods
from the conduct of a trade or business in the United States, or that is a
"controlled foreign corporation" (generally, a foreign corporation controlled by
certain United States shareholders) with respect
    
 
                                       97
<PAGE>   101
 
   
to the United States unless the broker has documentary evidence in its records
that the holder is a Foreign Holder and certain other conditions are met or the
holder otherwise establishes an exemption. Payment by a United States office of
a broker is subject to both backup withholding at a rate of 31% and information
reporting unless the holder certifies under penalties of perjury that it is a
Foreign Holder or otherwise establishes an exemption.
    
 
   
     1997 FINAL REGULATIONS. The procedures described above for withholding tax
on interest payments, and some of the associated backup withholding and
information reporting rules, are the subject of regulations issued in final form
October 7, 1997. The final regulations are effective for payments made after
December 31, 1998, subject to certain transition rules (the "1997 Final
Regulations"). The 1997 Final Regulations will provide alternative methods for
satisfying the statement requirement described in clause (i)(d) of "United
States Federal Income Taxation of Foreign Holders -- Payment of Interest on
Notes" above. The 1997 Final Regulations also will require, in the case of a
Note held by a foreign partnership, that the certification described in clause
(i)(d) above be provided by the partners and the partnership provide certain
information, including its taxpayer identification number. A look-through rule
will apply in the case of tiered partnerships. Prospective investors should
consult their tax advisors regarding the certification requirements for
non-United States Holders.
    
 
FEDERAL ESTATE TAX
 
   
     Subject to applicable estate tax treaty provisions, Notes held at the time
of death (or Notes transferred before death but subject to certain retained
rights or powers) by an individual who at the time of death is a Foreign Holder
will not be included in such Foreign Holder's gross estate for United States
Federal estate tax purposes provided that the individual does not actually or
constructively own 10% or more of the total combined voting power of all classes
of stock of DMI entitled to vote or hold the Notes in connection with a United
States trade or business.
    
 
              [E] CANADIAN TAXATION AND THE INVESTMENT CANADA ACT
 
     The following is a summary of the principal Canadian income tax
considerations generally applicable to nonresidents of Canada who hold the
Common Shares as capital property, deal at arm's length with the Company and do
not use or hold and are deemed not to use or hold their Common Shares in the
course of carrying on a business in Canada and do not carry on insurance
business in Canada. This summary has been prepared by reference to the existing
provisions of the Income Tax Act (Canada) (the "Act"), the Income Tax
Regulations (the "Regulations"), all published proposals for the amendment of
the Act and the Regulations to the date hereof and the published administrative
practices of Revenue Canada, the agency that administers the Act. Although this
summary does not specifically address the provincial income tax consequences of
an investment in Common Shares, generally speaking, provincial taxation does not
apply to persons who are not resident in Canada and who do not own or hold
property in the course of carrying on a business in Canada. Apart from changes
to the Act and the Regulations which have been publicly announced to the date
hereof, this summary does not consider the potential for any future alterations
to Canadian income tax legislation.
 
DISPOSITIONS OF COMMON SHARES
 
     A nonresident of Canada will only be subject to taxation in Canada under
the Act in respect of a disposition of Common Shares if such shares constitute
"taxable Canadian property" to such nonresident. Provided that the Common Shares
are listed on a recognized stock exchange in Canada at the time of a
disposition, they will only constitute "taxable Canadian property" to a holder
if the holder, either alone or together with persons with whom the holder does
not deal at arm's length, owns or at any time in the five years prior to the
date of dispositions, has owned in excess of 25% of the issued and outstanding
shares of a class or series of the capital of the Company. Persons who are
related by blood or marriage, or are subject to common control are deemed to
deal otherwise than at arm's length; other persons may also be considered to be
dealing otherwise than at arm's length in certain circumstances. For the
purposes of determining the 25% threshold,
 
                                       98
<PAGE>   102
 
   
rights or options to acquire Common Shares will be treated as ownership thereof.
Subject to the comments set out below in respect of the application of the
U.S.-Canada Income Tax Convention to U.S. resident holders, nonresidents whose
shares constitute "taxable Canadian property" will be subject to taxation
thereon on the same basis as Canadian residents. Generally speaking,
three-quarters of the excess of the holder's proceeds of disposition, over the
adjusted cost basis of the Common Shares, must be included in income as a
taxable capital gain, to be taxed at prevailing federal Canadian rates.
    
 
     Nonresidents whose shares are repurchased by the Company, except in respect
of certain purchases made by the Company in the open market, will give rise to
the deemed payment of a dividend by the Company to the former holder of Common
Shares in an amount equal to the excess paid over the paid-up capital of the
Common Shares so repurchased. Such deemed dividend will be excluded from the
former holders' proceeds of disposition of his Common Shares for the purposes of
computing any capital gain but will be subject to Canadian nonresident
withholding tax in the manner described below under "Dividends." In certain
limited circumstances, a sale by a holder of the Common Shares to a corporation
resident in Canada with which the holder does not deal at arm's length may give
rise to the deemed payment of a dividend, to the extent the amount received in
consideration therefor exceeds the paid-up capital of the Common Shares disposed
thereof.
 
   
     Pursuant to the U.S.-Canada Income Tax Convention (the "Convention"),
shareholders of the Company who are residents of the U.S. for the purposes of
the Convention and whose shares would otherwise be "taxable Canadian property"
may be exempt from Canadian taxation in respect of any gains on the Common
Shares provided the principal value of the Company is not derived from real
property located in Canada at the time of the disposition. The Company owns no
Canadian real property and the Company has no present intention to acquire
Canadian real property.
    
 
DIVIDENDS
 
     Under the Act, a withholding tax is imposed at the rate of 25% on the
amount of any dividends paid or credited on the Common Shares to a person not
resident in Canada. Pursuant to the Canada U.S.-Canada Income Tax Convention,
the rate of tax on such dividends is reduced to 5% for dividends received by any
U.S. resident corporation who owns in excess of 10% of the voting shares of the
corporation, and to 15% in all other instances.
 
INVESTMENT CANADA ACT
 
     The Investment Canada Act (the "ICA") prohibits the acquisition of control
of a Canadian business by non-Canadians without review and approval of the
Investment Review Division of Industry Canada, the agency that administers the
ICA, unless such acquisition is exempt from review under the provisions of the
ICA. Investment Review Division of Industry Canada must be notified of such
exempt acquisitions. The ICA covers acquisitions of control of corporate
enterprises, whether by purchase of assets, shares or "voting interests" of an
entity that controls, directly or indirectly, another entity carrying on a
Canadian business. The ICA will have no effect on the acquisition of shares
covered by this Prospectus.
 
     Apart from the ICA, there are no other limitations on the right of
nonresident or foreign owners to hold or vote securities imposed by Canadian law
or the Certificate of Continuance of the Company. There are no other decrees or
regulations in Canada which restrict the export or import of capital, including
foreign exchange controls, or that affect the remittance of dividends, interest
or other payments to nonresident holders of the Company's Common Shares except
as discussed above.
 
     THE FOREGOING DISCUSSION IS A SUMMARY OF THE PRINCIPAL CANADIAN FEDERAL
INCOME AND ESTATE TAX CONSEQUENCES OF THE OWNERSHIP, SALE OR OTHER DISPOSITION
OF THE COMMON SHARES. ACCORDINGLY, INVESTORS ARE URGES TO CONSULT THEIR TAX
ADVISORS WITH RESPECT TO THE CANADIAN INCOME AND ESTATE TAX CONSEQUENCES OF THE
OWNERSHIP AND DISPOSITION OF THE COMMON SHARES, INCLUDING THE APPLICATION AND
EFFECT OF THE LAWS OF ANY STATE, LOCAL, FOREIGN OR OTHER TAXING JURISDICTION.
 
                                       99
<PAGE>   103
 
                    SERVICE AND ENFORCEMENT OF LEGAL PROCESS
 
     DRI is incorporated under the laws of Canada. Some of the directors,
controlling persons and officers of DRI, as well as the experts named herein,
are residents of Canada and all or substantially all of such persons' assets are
located outside of the United States. As a result, it may be difficult for
holders of Common Shares to effect service within the United States upon the
directors, controlling persons, officers and experts who are not residents of
the United States or to realize in the United States upon judgments of courts of
the United States against such persons and DRI predicated upon civil liability
under the United States federal securities laws. DRI has been advised by its
counsel, Burnet, Duckworth & Palmer, Calgary, Alberta, that there is doubt as to
the enforceability in Canada against DRI or against any of its directors,
controlling persons, officers or experts who are not residents of the United
States, in original actions for enforcement of judgments of United States
courts, of liabilities predicated solely upon United States federal securities
laws.
 
                      [E] SHARES ELIGIBLE FOR FUTURE SALE
 
   
     After giving effect to the Equity Offering, the Company would have had
25,233,883 Common Shares outstanding as of December 31, 1997 (25,917,463 Common
Shares assuming exercise of the Underwriters' over-allotment option in full).
The Common Shares sold in the Equity Offering will be freely tradeable without
restrictions or further registration under the Securities Act. As of the close
of the Equity Offering, all of the Common Shares beneficially held by TPG will
be "restricted" securities within the meaning of the Securities Act as a result
of TPG being deemed an "affiliate" of the Company under such act. These
"restricted" Common Shares may be publicly sold only if registered under the
Securities Act or sold in accordance with an applicable exemption from
registration, such as that provided by Rule 144.
    
 
   
     In general, under Rule 144 as currently in effect, a person (or persons
whose shares are aggregated) who has beneficially owned shares for at least one
year, including persons who may be deemed "affiliates" of the Company, would be
entitled to sell within any three-month period a number of shares that does not
exceed the greater of the average weekly trading volume during the four calendar
weeks preceding such sale or 1% of the then outstanding Common Shares. A person
who is deemed not to have been an "affiliate" of the Company at any time during
the 90 days preceding a sale, and who has beneficially owned such shares for at
least two years, would be entitled to sell such Common Shares under Rule 144
without regard to the volume limitations described above. The Company is unable
to estimate the number of Common Shares, if any, that TPG may sell from time to
time under Rule 144, since such number will depend on the future market price
and trading volume for the Common Shares, as well as other factors beyond the
Company's control.
    
 
   
     In connection with the Equity Offering, the Company, each of its directors
and executive officers and TPG have agreed not to sell or otherwise dispose of
any Common Shares, including any securities exercisable for or convertible into
Common Shares, for a period of 120 days from the date of this Prospectus,
without the prior written consent of Morgan Stanley & Co. Incorporated. See
"Underwriters."
    
 
     The Company has granted TPG certain demand and "piggyback" registration
rights with respect to its Common Shares. See "Interests of Management in
Certain Transactions." TPG has waived its right to maintain its pro rata
ownership in connection with the Equity Offering.
 
     An increase in the number of Common Shares that may become available for
sale in the public market may adversely affect the market price prevailing from
time to time of the Common Shares and could impair the Company's ability to
raise additional capital through the sale of its equity securities.
 
                                       100
<PAGE>   104
 
                                [E] UNDERWRITERS
 
   
     Under the terms and subject to the conditions contained in an underwriting
agreement (the "Underwriting Agreement"), DRI has agreed to sell 4,557,200
Common Shares to a syndicate of underwriters (the "Underwriters"), for whom
Morgan Stanley & Co. Incorporated, Gordon Capital, Inc., Johnson Rice & Company
L.L.C. and Loewen, Ondaatje, McCutcheon USA Limited are acting as
representatives (the "Representatives"), and the Underwriters have severally
agreed to purchase the number of Common Shares set forth opposite their
respective names below:
    
 
   
<TABLE>
<CAPTION>
                                                               NUMBER
                        UNDERWRITERS                          OF SHARES
                        ------------                          ---------
<S>                                                           <C>
Morgan Stanley & Co. Incorporated...........................
Gordon Capital, Inc. .......................................
Johnson Rice & Company L.L.C. ..............................
Loewen, Ondaatje, McCutcheon USA Limited....................
                                                              ---------
          Total.............................................  4,557,200
                                                              =========
</TABLE>
    
 
     The Underwriting Agreement provides that the obligations of the several
Underwriters to pay for and accept delivery of the Common Shares offered hereby
are subject to the approval of certain legal matters by their counsel and to
certain other conditions. If any of the Common Shares are purchased by the
Underwriters pursuant to the Underwriting Agreement, all such Common Shares
(other than the Common Shares covered by the over-allotment option described
below) must be so purchased.
 
     The Company has been advised by the Representatives that the Underwriters
propose to offer the Common Shares to the public initially at the price to
public set forth on the cover page of this Prospectus and to certain dealers
(who may include the Underwriters) at such price less a concession not to exceed
$          per share. The Underwriters may allow, and such dealers may reallow,
a concession not in excess of $          per share to any other Underwriter or
certain other dealers. After the initial offering of the Common Shares the
offering price and other selling terms may from time to time be varied by the
Underwriters.
 
   
     The Company has granted to the Underwriters an option to purchase up to
683,580 additional Common Shares at the price to public set forth on the cover
page hereof less underwriting discounts and commissions, solely to cover
over-allotments. Such option may be exercised at any time until 30 days after
the date of this Prospectus. To the extent that the Underwriters exercise such
option, each of the Underwriters will be committed, subject to certain
conditions, to purchase a number of Common Shares proportionate to such
Underwriter's initial commitment as indicated in the preceding table.
    
 
     Each of the Underwriters has represented and, during the period of six
months after the date hereof, agreed that (a) it has not offered or sold and
will not offer or sell any Common Shares in the United Kingdom except to persons
whose ordinary activities involve them in acquiring, holding, managing or
disposing of investments (as principal or agent) for the purpose of their
business or otherwise in circumstances which have not resulted and will not
result in an offer to the public in the United Kingdom within the meaning of the
Public Offers of Securities Regulations (1995) (the "Regulations"); (b) it has
complied and will comply with all applicable provisions of the Financial
Services Act 1986 and the Regulations with respect to anything done by it in
relation to the Common Shares offered hereby in, from or otherwise involving the
United Kingdom; and (c) it has only issued or passed on and will only issue or
pass on to any person in the United Kingdom any document received by it in
connection with the issue of the Common Shares if that person is a kind
described in Article 11(3) of the Financial Services Act 1986 (Investment
Advertisements) (Exemptions) Order 1996, or is a person to whom such document
may otherwise lawfully be issued or passed on.
 
     The Company has agreed to indemnify the Underwriters against certain
liabilities that may be incurred in connection with the offering of the Common
Shares, including liabilities under the Securities Act, or to contribute to
payments that the Underwriters may be required to make in respect thereof.
 
                                       101
<PAGE>   105
 
   
     In order to facilitate the Equity Offering, the Underwriters may engage in
transactions that stabilize, maintain or otherwise affect the price of the
Common Shares. Specifically, the Underwriters may over-allot in connection with
the Equity Offering, creating a short position in the Common Shares for their
own account. In addition, to cover over-allotments or to stabilize the price of
the Common Shares, the Underwriters may bid for, and purchase, Common Shares in
the open market. Finally, the underwriting syndicate may reclaim selling
concessions allowed to an underwriter or a dealer for distributing the Common
Shares in the Equity Offering, if the syndicate repurchases previously
distributed Common Shares in transactions to cover syndicate short positions, in
stabilization transactions or otherwise. Any of these activities may stabilize
or maintain the market price of the Common Shares above independent market
levels. The Underwriters are not required to engage in these activities, and may
end any of these activities at any time.
    
 
   
     The Common Shares being sold in the TPG Purchase are being sold directly to
TPG by the Company. The TPG Purchase is not being made on an underwritten basis,
and the Underwriters of the Equity Offering are not acting on behalf of the
Company, as agents or in any other capacity, in connection therewith. TPG has
agreed to provide, at the closing of the TPG Purchase, an undertaking to the TSE
not to sell any of the Common Shares acquired pursuant to the TPG Purchase for a
period of six months following the acquisition of such Common Shares without the
prior written consent of the TSE. The closing of the TPG Purchase and the Equity
Offering are each conditioned upon, and will occur concurrently with, the
closing of the other.
    
 
                                [D] UNDERWRITERS
 
     Under the terms and subject to the conditions contained in an underwriting
agreement (the "Underwriting Agreement"), the Underwriters named below have
severally agreed to purchase, and DMI has agreed to sell them, the principal
amount of Notes set forth opposite their respective names below:
 
   
<TABLE>
<CAPTION>
                                                               PRINCIPAL
                                                                 AMOUNT
                        UNDERWRITERS                            OF NOTES
                        ------------                          ------------
<S>                                                           <C>
Morgan Stanley & Co. Incorporated...........................
NationsBanc Montgomery Securities LLC.......................
                                                              ------------
          Total.............................................  $125,000,000
                                                              ============
</TABLE>
    
 
     The Underwriting Agreement provides that the obligations of the
Underwriters to pay for and accept delivery of the Notes offered hereby are
subject to the approval of certain legal matters by their counsel and to certain
other conditions. If the Notes are purchased by the Underwriters pursuant to the
Underwriting Agreement, all such Notes must be so purchased.
 
     The Underwriters initially propose to offer the Notes directly to the
public at the public offering price set forth on the cover page of this
Prospectus and to certain dealers at a price that represents a concession not in
excess of     % of the principal amount of the Notes. Each Underwriter may
allow, and such dealers may reallow, a concession to certain other dealers not
in excess of     % of the principal amount of the Notes. After the initial
offering of the Notes the offering price and other selling terms may from time
to time be varied by the Underwriters.
 
     DMI and the Guarantor have agreed to indemnify the Underwriters against
certain liabilities that may be incurred in connection with the offering of the
Notes, including liabilities under the Securities Act, or to contribute to
payments that the Underwriters may be required to make in respect thereof.
 
   
     In order to facilitate the Debt Offering, the Underwriters may engage in
transactions that stabilize, maintain or otherwise affect the price of the
Notes. Specifically, the Underwriters may over-allot in connection with the Debt
Offering, creating a short position in the Notes for their own account. In
addition, to cover over-allotments or to stabilize the price of the Notes, the
Underwriters may bid for, and purchase, Notes in the open market. Finally, the
underwriting syndicate may reclaim selling concessions allowed to an underwriter
or a dealer for distributing the Notes in the Debt Offering, if the syndicate
repurchases previously distributed Notes in transactions to cover syndicate
short positions, in stabilization transactions or otherwise. Any of these
    
 
                                       102
<PAGE>   106
 
activities may stabilize or maintain the market price of the Notes above
independent market levels. The Underwriters are not required to engage in these
activities, and may end any of these activities at any time.
 
   
     The rules of the National Association of Securities Dealers, Inc. (the
"NASD") provide that no NASD member shall participate in a public offering of an
issuer's securities where more than 10% of the net offering proceeds are
intended to be paid to members participating in the distribution of the offering
or affiliated persons of such members, unless a "qualified independent
underwriter" shall have been engaged on the terms provided in such rules. It is
anticipated that NationsBank of Texas, N.A., an affiliate of NationsBanc
Montgomery Securities LLC and a lender under the Credit Facility, will be
receiving more than 10% of the proceeds from the Offerings in its capacity as a
lender under the Credit Facility. See "Use of Proceeds."
    
 
   
     In view of such potential use of proceeds, the Debt Offering is being
conducted in accordance with the applicable provisions of Rule 2720 of the
NASD's Conduct Rules ("Rule 2720"). Rule 2720 requires that the yield at which
the Debt Offering will be distributed to the public will be established at a
yield no lower than that recommended by a "qualified independent underwriter".
Accordingly, Morgan Stanley & Co. Incorporated is assuming the responsibilities
of acting as qualified independent underwriter in pricing the Debt Offering,
preparing the Registration Statement of which this Prospectus forms a part and
conducting "due diligence" with respect thereto.
    
 
                               [E] LEGAL MATTERS
 
   
     The legality of the securities offered hereby will be passed upon for the
Company by Burnet, Duckworth & Palmer, Calgary, Alberta and Jenkens & Gilchrist,
a Professional Corporation, Houston, Texas. Certain legal matters in connection
with the Offerings will be passed upon for the Underwriters by Osler, Hoskin &
Harcourt, Calgary, Alberta and Cravath, Swaine & Moore, New York, New York.
    
 
                               [D] LEGAL MATTERS
 
   
     The legality of the Notes offered hereby will be passed upon for DMI by
Jenkens & Gilchrist, a Professional Corporation, Houston, Texas. Certain legal
matters in connection with the Offerings will be passed upon for the Company by
Burnet, Duckworth & Palmer, Calgary, Alberta and for the Underwriters by Osler,
Hoskin & Harcourt, Calgary, Alberta and Cravath, Swaine & Moore, New York, New
York.
    
 
                                    EXPERTS
 
     The consolidated financial statements and financial statement schedule of
the Company as at December 31, 1995 and 1996 and for each of the three years in
the period ended December 31, 1996 included and incorporated by reference in
this Prospectus and elsewhere in the Registration Statement, have been audited
by Deloitte & Touche, Chartered Accountants, Calgary, Alberta, Canada, as stated
in their reports appearing and incorporated by reference in this Prospectus and
elsewhere in the Registration Statement, and have been so included in reliance
upon the reports of such firm given upon their authority as experts in
accounting and auditing.
 
     The statements of revenues and direct operating expenses of Chevron's
working interest in the Heidelberg Fields acquired by the Company for each of
the two years in the period December 31, 1996 and for the nine months ended
September 30, 1997 included in this Prospectus has been so included in reliance
on the report of Price Waterhouse LLP, independent accountants, given on the
authority of said firm as experts in auditing and accounting.
 
     The reference to the reports of Netherland, Sewell & Associates, Inc.,
independent petroleum engineers located in Dallas, Texas, contained herein with
respect to the proved reserves, the estimated future net revenue from such
proved reserves, and the discounted present values of such estimated future net
revenue, is made in reliance upon the authority of such firms as experts with
the respect to such matters.
 
                                       103
<PAGE>   107
 
                             AVAILABLE INFORMATION
 
     The Company is subject to the information requirements of the Exchange Act,
and in accordance therewith files reports, proxy statements and other
information with the Commission. Such reports, proxy statements and other
information can be inspected and copied at the public reference facilities
maintained by the Commission at 450 5th Street, N.W., Room 1024, Washington,
D.C. 20549, and at the following regional offices of the Commission: Seven World
Trade Center, 13th Floor, New York, New York 10048 and Citicorp Center, 500 West
Madison Street, Suite 1400, Chicago, Illinois 60661, at prescribed rates. In
addition, such materials filed electronically by the Company with the Commission
are available at the Commission's World Wide Web site at http://www.sec.gov. The
Common Shares are traded on the NYSE and such reports, proxy statements and
other information may be inspected at 20 Broad Street, New York, New York 10005.
The Common Shares are also traded on the TSE and any filings with the TSE may be
inspected at The Exchange Tower, 2 First Canada Plaza, Toronto, Ontario, Canada
M5X 1J2.
 
     The Company has filed with the Commission a Registration Statement on Form
S-3 under the Securities Act, with respect to the securities offered hereby.
This Prospectus does not contain exhibits and schedules and certain other
information which is part of the Registration Statement and which have been
omitted from this Prospectus as permitted by the rules and regulations of the
Commission. Statements contained herein concerning the contents of any contract,
agreement or other document filed as an exhibit to the Registration Statement
are necessarily summaries of such contracts, agreements or documents and are
qualified in their entirety by reference to each such exhibit. The Registration
Statement and the exhibits and schedules forming a part thereof can be obtained
from the Commission.
 
   
[D] LISTING OF THE NOTES
    
 
   
     Application will be made to list the Notes on the Luxembourg Stock
Exchange. For the purposes of listing on the Luxembourg Stock Exchange, a
Listing Circular (Prospectus de Cotateon) will be issued in Luxembourg on or
about the date of issuance of the Notes. The Company will appoint a special
agent in Luxembourg until such time as the Company is required to appoint a
transfer and paying agent located in Luxembourg. The Company reserves the right
to vary such appointment.
    
 
                                       104
<PAGE>   108
 
                                    GLOSSARY
 
     The terms defined in this section are used throughout this Prospectus.
 
          ANTICLINE. Geologically positive structure favorable for trapping
     hydrocarbons.
 
          BBL. One stock tank barrel, of 42 U.S. gallons liquid volume, used
     herein in reference to crude oil or other liquid hydrocarbons.
 
          BBLS/D. Barrels of oil produced per day.
 
          BCF. One billion cubic feet of natural gas.
 
          BOE. One barrel of oil equivalent using the ratio of one barrel of
     crude oil, condensate or natural gas liquids to 6 Mcf of natural gas.
 
          BOE/D. BOEs produced per day.
 
          BTU. British thermal unit, which is the heat required to raise the
     temperature of a one-pound mass of water from 58.5 to 59.5 degrees
     Fahrenheit.
 
          COMMERCIAL WELL; COMMERCIALLY PRODUCTIVE WELL. An oil and gas well
     which produces oil and natural gas in sufficient quantities such that
     proceeds from the sale of such production exceed production expenses and
     taxes.
 
          DEVELOPMENT WELL. A developmental well is a well drilled within the
     presently proved productive area of an oil or natural gas reservoir, as
     indicated by reasonable interpretation of available data, with the
     objective of completing that reservoir.
 
          DRY HOLE; DRY WELL; NON-PRODUCTIVE WELL. A well found to be incapable
     of producing either oil or natural gas in sufficient quantities to justify
     completion as an oil or natural gas well.
 
          EXPLORATORY WELL. An exploratory well is a well drilled either in
     search of a new, as-yet undiscovered oil or natural gas reservoir or to
     greatly extend the known limits of a previously discovered reservoir.
 
          FARMOUT. An assignment of an interest in a drilling location and
     related acreage conditional upon the drilling of a well on that location.
 
          FORMATION. A succession of sedimentary beds that were deposited under
     the same general geologic conditions.
 
          GEOPRESSURED. Pressures in excess of the normal increase in pressure
     with depth.
 
          GEOSYNCLINE. A regional area of subsidence in which sediments are
     accumulated.
 
          GROSS ACRES OR GROSS WELLS. The total acres or wells, as the case may
     be, in which a working interest is owned.
 
          HORIZONTAL WELLS. Wells which are drilled at angles greater than 70
     degrees from vertical.
 
          MBBL. One thousand barrels of crude oil or other liquid hydrocarbons.
 
          MBOE. One thousand BOEs.
 
          MBOE/D. One thousand BOE/d.
 
          MBTU. One thousand Btus.
 
          MCF. One thousand cubic feet of natural gas.
 
   
          MCF/D. One thousand cubic feet of natural gas produced per day.
    
 
          MMBBL. One million barrels of crude oil or other liquid hydrocarbons.
 
          MMBOE. One million BOEs.
 
                                       105
<PAGE>   109
 
          MMBTU. One million Btus.
 
          MMCF. One million cubic feet of natural gas.
 
          MMCF/D. One million cubic feet of natural gas produced per day.
 
          NET; NET REVENUE INTEREST. Production or revenue that is owned by the
     Company and produced for its interest after deducting royalties and other
     similar interests.
 
          NET ACRES OR NET WELLS. The sum of the fractional working interests
     owned in gross acres or gross wells.
 
          PV10 VALUE. When used with respect to oil and natural gas reserves,
     PV10 Value means the estimated future gross revenue to be generated from
     the production of proved reserves, net of estimated production and future
     development costs, using prices and costs in effect at the determination
     date, without giving effect to non-property related expenses such as
     general and administrative expenses, debt service and future income tax
     expense or to depreciation, depletion and amortization, discounted to
     present value using an annual discount rate of 10% in accordance with the
     guidelines of the Commission.
 
          PRODUCTIVE WELL. A well that is producing oil or natural gas or that
     is capable of production.
 
          PROVED DEVELOPED RESERVES. Reserves that can be expected to be
     recovered from existing wells with existing equipment and operating
     methods.
 
          PROVED RESERVES. The estimated quantities of crude oil, natural gas
     and natural gas liquids which geological and engineering data demonstrate
     with reasonable certainty to be recoverable in future years from known
     reservoirs under existing economic and operating conditions.
 
          PROVED UNDEVELOPED RESERVES. Reserves that are expected to be
     recovered from new wells on undrilled acreage or from existing wells where
     a relatively major expenditure is required for recompletion.
 
          ROYALTY INTEREST. An interest in an oil and natural gas property
     entitling the owner to a share of oil or natural gas production free of
     costs of production.
 
          TCF. One trillion cubic feet of natural gas.
 
          UNDEVELOPED ACREAGE. Lease acreage on which wells have not been
     participated in or completed to a point that would permit the production of
     commercial quantities of oil and natural gas regardless of whether such
     acreage contains proved reserves.
 
          WORKING INTEREST. The cost-bearing interest in a well or property
     which gives the owner the right to drill, produce and conduct operating
     activities on the property as well as to a share of production.
 
                                       106
<PAGE>   110
 
                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 
                  YEARS ENDED DECEMBER 31, 1994, 1995 AND 1996
           NINE MONTHS ENDED SEPTEMBER 30, 1996 AND 1997 (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                                   PAGE
                                                                   ----
<S>                                                           <C>
DENBURY RESOURCES INC. AND SUBSIDIARIES
  Independent Auditors' Report..............................  F-2
  Consolidated Balance Sheets...............................  F-3
  Consolidated Statements of Income.........................  F-4
  Consolidated Statements of Cash Flows.....................  F-5
  Consolidated Statement of Changes in Shareholders'
     Equity.................................................  F-6
  Notes to Consolidated Financial Statements................  F-7 thru F-29
STATEMENT OF REVENUES AND DIRECT OPERATING EXPENSES OF
CHEVRON PROPERTIES
  Report of Independent Accountants.........................  F-30
  Statements of Revenues and Direct Operating Expenses of
     Properties.............................................  F-31
  Notes to Statement of Revenues and Direct Operating
     Expenses of Properties.................................  F-32 thru F-34
</TABLE>
 
                                       F-1
<PAGE>   111
 
                          INDEPENDENT AUDITORS' REPORT
 
To the Shareholders of Denbury Resources Inc.
 
     We have audited the consolidated balance sheets of Denbury Resources Inc.
as at December 31, 1995 and 1996 and the consolidated statements of income,
changes in shareholders' equity and cash flows for each of the years in the
three year period ended December 31, 1996. These consolidated financial
statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these consolidated financial
statements based on our audits.
 
     We conducted our audits in accordance with auditing standards generally
accepted in Canada and the United States of America. Those standards require
that we plan and perform the audit to obtain reasonable assurance whether the
financial statements are free of material misstatement. An audit includes
examining, on a test basis, evidence supporting the amounts and disclosures in
the financial statements. An audit also includes assessing the accounting
principles used and significant estimates made by management, as well as
evaluating the overall financial statement presentation.
 
     In our opinion, these consolidated financial statements present fairly in
all material respects, the financial position of the Company as at December 31,
1995 and 1996 and the results of its operations and the changes in shareholders'
equity and cash flows for each of the years in the three year period ended
December 31, 1996, in accordance with accounting principles generally accepted
in Canada.
 
Deloitte & Touche
 
Chartered Accountants
 
Calgary, Alberta
February 21, 1997
 
                                       F-2
<PAGE>   112
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
                          CONSOLIDATED BALANCE SHEETS
                     (AMOUNTS IN THOUSANDS OF U.S. DOLLARS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                DECEMBER 31,
                                                             -------------------   SEPTEMBER 30,
                                                               1995       1996         1997
                                                             --------   --------   -------------
                                                                                    (UNAUDITED)
<S>                                                          <C>        <C>        <C>
CURRENT ASSETS
  Cash and cash equivalents................................  $  6,553   $ 13,453     $  2,236
  Accrued production receivable............................     3,212     11,906        7,097
  Trade and other receivables..............................     1,160      3,643       14,507
                                                             --------   --------     --------
          Total current assets.............................    10,925     29,002       23,840
                                                             --------   --------     --------
PROPERTY AND EQUIPMENT (USING FULL COST ACCOUNTING)
  Oil and natural gas properties...........................    72,510    159,724      230,521
  Unevaluated oil and natural gas properties...............     7,085      6,413        6,389
  Less accumulated depreciation and depletion..............   (13,982)   (31,141)     (53,527)
                                                             --------   --------     --------
          Net property and equipment.......................    65,613    134,996      183,383
                                                             --------   --------     --------
OTHER ASSETS...............................................     1,103      2,507        3,201
                                                             --------   --------     --------
          TOTAL ASSETS.....................................  $ 77,641   $166,505     $210,424
                                                             ========   ========     ========
                              LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
  Accounts payable and accrued liabilities.................  $  2,872   $ 10,903     $ 16,858
  Oil and gas production payable...........................     1,014      5,550        4,060
  Current portion of long-term debt........................       177         67           23
                                                             --------   --------     --------
          Total current liabilities........................     4,063     16,520       20,941
                                                             --------   --------     --------
LONG-TERM LIABILITIES
  Senior bank debt.........................................        75        125       20,005
  Subordinated debt and other notes payable................     3,399         --           --
  Provision for site reclamation costs.....................       242        613          938
  Deferred income taxes and other..........................     1,361      6,743       12,982
                                                             --------   --------     --------
          Total long-term liabilities......................     5,077      7,481       33,925
                                                             --------   --------     --------
CONVERTIBLE FIRST PREFERRED SHARES, SERIES A
  1,500,000 shares authorized, issued and outstanding at
     December 31, 1995.....................................    15,000         --           --
                                                             --------   --------     --------
SHAREHOLDERS' EQUITY
  Common shares, no par value unlimited shares authorized;
     outstanding -- 11,428,809, 20,055,757 and 20,364,799
     shares at December 31, 1995, December 31, 1996 and
     September 30, 1997, respectively......................    50,064    130,323      132,744
  Retained earnings........................................     3,437     12,181       22,814
                                                             --------   --------     --------
          Total shareholders' equity.......................    53,501    142,504      155,558
                                                             --------   --------     --------
          TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY.......  $ 77,641   $166,505     $210,424
                                                             ========   ========     ========
</TABLE>
 
                See Notes to Consolidated Financial Statements.
 
Approved by the Board:
 
<TABLE>
<C>                                                      <C>
                 /s/ GARETH ROBERTS                                    /s/ WIELAND F. WETTSTEIN
- -----------------------------------------------------    -----------------------------------------------------
                   Gareth Roberts                                        Wieland F. Wettstein
                      Director                                                 Director
</TABLE>
 
                                       F-3
<PAGE>   113
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
                       CONSOLIDATED STATEMENTS OF INCOME
                (AMOUNTS IN THOUSANDS EXCEPT PER SHARE AMOUNTS)
                                 (U.S. DOLLARS)
 
<TABLE>
<CAPTION>
                                                                             NINE MONTHS ENDED
                                                 YEAR ENDED DECEMBER 31,       SEPTEMBER 30,
                                               ---------------------------   -----------------
                                                1994      1995      1996      1996      1997
                                               -------   -------   -------   -------   -------
                                                                                (UNAUDITED)
<S>                                            <C>       <C>       <C>       <C>       <C>
REVENUES
  Oil, natural gas and related product
     sales...................................  $12,692   $20,032   $52,880   $34,709   $60,083
  Interest income and other..................       23        77       769       425       986
                                               -------   -------   -------   -------   -------
          Total revenues.....................   12,715    20,109    53,649    35,134    61,069
                                               -------   -------   -------   -------   -------
EXPENSES
  Production.................................    4,309     6,789    13,495     9,197    15,737
  General and administrative.................    1,105     1,832     4,267     2,825     4,535
  Interest...................................    1,146     2,085     1,993     1,530       387
  Imputed preferred dividends................       --        --     1,281     1,153        --
  Loss on early extinguishment of debt.......       --       200       440       440        --
  Depletion and depreciation.................    4,209     8,022    17,904    12,557    23,224
  Franchise taxes............................       65       100       213       160       308
                                               -------   -------   -------   -------   -------
          Total expenses.....................   10,834    19,028    39,593    27,862    44,191
                                               -------   -------   -------   -------   -------
Income before income taxes...................    1,881     1,081    14,056     7,272    16,878
Provision for federal income taxes...........     (718)     (367)   (5,312)   (2,932)   (6,245)
                                               -------   -------   -------   -------   -------
NET INCOME...................................  $ 1,163   $   714   $ 8,744   $ 4,340   $10,633
                                               =======   =======   =======   =======   =======
NET INCOME PER COMMON SHARE
  Primary....................................  $  0.19   $  0.10   $  0.67   $  0.37   $  0.53
  Fully diluted..............................     0.19      0.10      0.62      0.36      0.50
                                               =======   =======   =======   =======   =======
Average number of common shares
  outstanding................................    6,240     6,870    13,104    11,616    20,175
                                               =======   =======   =======   =======   =======
</TABLE>
 
                 See Notes to Consolidated Financial Statements
 
                                       F-4
<PAGE>   114
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                     (AMOUNTS IN THOUSANDS OF U.S. DOLLARS)
 
<TABLE>
<CAPTION>
                                                                                      NINE MONTHS ENDED
                                                      YEAR ENDED DECEMBER 31,           SEPTEMBER 30,
                                                   ------------------------------    -------------------
                                                     1994       1995       1996        1996       1997
                                                   --------   --------   --------    --------   --------
                                                                                         (UNAUDITED)
<S>                                                <C>        <C>        <C>         <C>        <C>
CASH FLOW FROM OPERATING ACTIVITIES:
  Net income.....................................  $  1,163   $    714   $  8,744    $  4,340   $ 10,633
  Adjustments needed to reconcile to net cash
    flow provided by operations:
    Depreciation, depletion and amortization.....     4,304      8,113     17,904      12,557     23,224
    Deferred income taxes........................       718        367      5,312       2,932      6,245
    Imputed preferred dividend...................        --         --      1,281       1,153         --
    Loss on early extinguishment of debt.........        --        200        440         440         --
    Other........................................        --         --        459         345         64
                                                   --------   --------   --------    --------   --------
                                                      6,185      9,394     34,140      21,767     40,166
  Changes in working capital items relating to
    operations:
    Accrued production receivable................      (986)    (1,303)    (8,694)     (4,388)     4,809
    Trade and other receivables..................      (124)      (168)    (1,508)       (659)   (10,864)
    Accounts payable and accrued liabilities.....     1,581     (1,660)     6,711       9,688      5,955
    Oil and gas production payable...............       261        490      4,536       2,004     (1,490)
                                                   --------   --------   --------    --------   --------
NET CASH FLOW PROVIDED BY OPERATIONS.............     6,917      6,753     35,185      28,412     38,576
                                                   --------   --------   --------    --------   --------
CASH FLOW USED FOR INVESTING ACTIVITIES:
    Oil and natural gas expenditures.............   (10,297)   (11,761)   (38,450)    (25,704)   (54,700)
    Acquisition of oil and natural gas
      properties.................................    (6,606)   (16,763)   (48,407)    (47,616)   (16,073)
    Net purchases of other assets................      (122)      (560)    (1,726)     (1,290)    (1,238)
    Acquisition of subsidiary, net of cash
      acquired...................................        --         --        209         209         --
                                                   --------   --------   --------    --------   --------
NET CASH USED FOR INVESTING ACTIVITIES...........   (17,025)   (29,084)   (88,374)    (74,401)   (72,011)
                                                   --------   --------   --------    --------   --------
CASH FLOW FROM FINANCING ACTIVITIES:
    Bank borrowings..............................     9,835     19,350     47,900      44,900     19,900
    Bank repayments..............................    (2,485)   (34,200)   (47,900)         --         --
    Issuance of subordinated debt................     1,451      1,772         --          --         --
    Issuance of common stock.....................       367     26,825     60,664       1,690      2,421
    Issuance of preferred stock..................        --     15,000         --          --         --
    Costs of debt financing......................      (122)      (493)      (411)       (408)       (33)
    Other........................................        62        (82)      (164)       (135)       (70)
                                                   --------   --------   --------    --------   --------
NET CASH PROVIDED BY FINANCING ACTIVITIES........     9,108     28,172     60,089      46,047     22,218
                                                   --------   --------   --------    --------   --------
NET INCREASE (DECREASE) IN CASH AND CASH
  EQUIVALENTS....................................    (1,000)     5,841      6,900          58    (11,217)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR...     1,712        712      6,553       6,553     13,453
                                                   --------   --------   --------    --------   --------
CASH AND CASH EQUIVALENTS AT END OF PERIOD.......  $    712   $  6,553   $ 13,453    $  6,611   $  2,236
                                                   ========   ========   ========    ========   ========
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
    Cash paid during the period for interest.....  $  1,027   $  2,127   $  1,621    $  1,080   $    150
SUPPLEMENTAL DISCLOSURE OF FINANCING ACTIVITIES:
    Conversion of subordinated debt to common
      stock......................................        --         --   $  3,314    $  1,465         --
    Conversion of preferred stock to common
      stock......................................        --         --     16,281          --         --
    Assumption of liabilities in acquisition.....        --         --      1,321       1,321         --
</TABLE>
 
                 See Notes to Consolidated Financial Statements
 
                                       F-5
<PAGE>   115
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY
                 (DOLLAR AMOUNTS IN THOUSANDS OF U.S. DOLLARS)
 
<TABLE>
<CAPTION>
                                                        COMMON SHARES
                                                       (NO PAR VALUE)
                                                    ---------------------   RETAINED
                                                      SHARES      AMOUNT    EARNINGS    TOTAL
                                                    ----------   --------   --------   --------
<S>                                                 <C>          <C>        <C>        <C>
BALANCE -- JANUARY 1, 1994........................   6,208,417   $ 22,872   $ 1,560    $ 24,432
  Issued pursuant to employee stock option plan...      96,250        367        --         367
  Net income......................................          --         --     1,163       1,163
                                                    ----------   --------   -------    --------
BALANCE -- DECEMBER 31, 1994......................   6,304,667     23,239     2,723      25,962
                                                    ----------   --------   -------    --------
  Issued pursuant to employee stock option plan...      10,000         54        --          54
  Private placement of Special Warrants
     exchanged....................................     614,143      2,314        --       2,314
  Private placement of common shares..............   4,499,999     24,457        --      24,457
  Net income......................................          --         --       714         714
                                                    ----------   --------   -------    --------
BALANCE -- DECEMBER 31, 1995......................  11,428,809     50,064     3,437      53,501
                                                    ----------   --------   -------    --------
  Issued pursuant to employee stock option plan...     197,675      1,070        --       1,070
  Issued pursuant to employee stock purchase
     plan.........................................      31,311        358        --         358
  Public placement of common shares...............   4,940,000     58,776        --      58,776
  Conversion of preferred stock...................   2,816,372     16,281        --      16,281
  Conversion of warrants..........................      75,000        460        --         460
  Conversion of subordinated debt.................     566,590      3,314        --       3,314
  Net income......................................          --         --     8,744       8,744
                                                    ----------   --------   -------    --------
BALANCE -- DECEMBER 31, 1996......................  20,055,757    130,323    12,181     142,504
                                                    ----------   --------   -------    --------
  Issued pursuant to employee stock option plan...     270,056      1,764        --       1,764
  Issued pursuant to employee stock purchase
     plan.........................................      38,986        657        --         657
  Net income......................................          --         --    10,633      10,633
                                                    ----------   --------   -------    --------
BALANCE -- SEPTEMBER 30, 1997 (UNAUDITED).........  20,364,799   $132,744   $22,814    $155,558
                                                    ==========   ========   =======    ========
</TABLE>
 
                 See Notes to Consolidated Financial Statements
 
                                       F-6
<PAGE>   116
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
      YEARS ENDED DECEMBER 31, 1994, 1995 AND 1996 AND FOR THE NINE MONTHS
                 ENDED SEPTEMBER 30, 1996 AND 1997 (UNAUDITED)
 
1. SIGNIFICANT ACCOUNTING POLICIES
 
     The Company's operating activities are related to exploration, development
and production of oil and natural gas in the United States. All of the Canadian
operations were sold effective September 1, 1993.
 
     The Company's name was changed on June 7, 1994, from Canadian Newscope
Resources Inc. to Newscope Resources Ltd. and again on December 21, 1995 to
Denbury Resources Inc.
 
     On October 9, 1996 the shareholders of the Company approved an amendment to
the Articles of Continuance to consolidate the number of issued and outstanding
Common Shares on the basis of one Common Share for each two Common Shares
outstanding. All applicable shares and per share data have been adjusted for the
reverse stock split.
 
  PRINCIPLES OF CONSOLIDATION
 
     The consolidated financial statements have been prepared in accordance with
Canadian generally accepted accounting principles and include the accounts of
the Company and its wholly owned subsidiaries, Denbury Holdings Ltd., Denbury
Management, Inc. and Denbury Marine L.L.C. and the Company's equity in the
operation of its 50% owned subsidiary, Denbury Energy Services ("Services"). The
Company acquired the remaining 50% of Services effective May 1, 1996 and began
consolidating all of Services as of that date. All material intercompany
balances and transactions have been eliminated.
 
  OIL AND NATURAL GAS OPERATIONS
 
     a) Capitalized costs
 
     The Company follows the full-cost method of accounting for oil and natural
gas properties. Under this method, all costs related to the exploration for and
development of oil and natural gas reserves are capitalized and accumulated in a
single cost center representing the Company's activities undertaken exclusively
in the United States. Such costs include lease acquisition costs, geological and
geophysical expenditures, lease rentals on undeveloped properties, costs of
drilling both productive and non-productive wells and general and administrative
expenses directly related to exploration and development activities. Proceeds
received from disposals are credited against accumulated costs except when the
sale represents a significant disposal of reserves in which case a gain or loss
is recognized.
 
     b) Depletion and depreciation
 
     The costs capitalized, including production equipment, are depleted or
depreciated on the unit-of-production method, based on proved oil and natural
gas reserves as determined by independent petroleum engineers. Oil and natural
gas reserves are converted to equivalent units based upon the relative energy
content which is six thousand cubic feet of natural gas to one barrel of crude
oil.
 
     c) Site reclamation
 
     Estimated future costs of well abandonment and site reclamation, including
the removal of production facilities at the end of their useful life, are
provided for on a unit-of-production basis. Costs are based on engineering
estimates of the anticipated method and extent of site restoration, valued at
year-end prices, net of estimated salvage value, and in accordance with the
current legislation and industry practice. The annual provision for future site
reclamation costs is included in depletion and depreciation expense.
 
                                       F-7
<PAGE>   117
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     d) Ceiling test
 
     The capitalized costs less accumulated depletion, depreciation, related
deferred taxes and site reclamation costs are limited to an amount which is not
greater than the estimated future net revenue from proved reserves using
period-end prices less estimated future site restoration and abandonment costs,
future production-related general and administrative expenses, financing costs
and income taxes, plus the cost (net of impairments) of undeveloped properties.
 
     e) Joint interest operations
 
     Substantially all of the Company's oil and natural gas exploration and
production activities are conducted jointly with others. These financial
statements reflect only the Company's proportionate interest in such activities.
 
  FOREIGN CURRENCY TRANSLATION
 
     Since 1993 when the Company sold its Canadian oil and natural gas
properties, virtually all of the Company's assets are located in the United
States. These assets and the United States operations are accounted for and
reported in U.S. dollars and no translation is necessary. The minor amount of
Canadian assets and liabilities are translated to U.S. dollars using year-end
exchange rates and any Canadian operations, which are principally minor
administrative and interest expenses, are translated using the historical
exchange rate.
 
  EARNINGS PER SHARE
 
     Net income per common share is computed by dividing the net income
attributable to common shareholders by the weighted average number of shares of
common stock outstanding. In accordance with Canadian generally accepted
accounting principles ("GAAP"), the imputed dividend during 1996 on the
Convertible First Preferred Shares, Series A has been recorded as an operating
expense in the accompanying financial statements and this is deducted from net
income in computing earnings per share. The conversion of the Convertible First
Preferred Shares, Series A ("Convertible Preferred") was anti-dilutive and was
not included in the calculation of earnings per share. In computing fully
diluted earnings per share, the stock options, warrants and convertible debt
instruments were dilutive for the year ended December 31, 1996 and for the nine
months ended September 30, 1997 and were assumed to be converted or exercised as
of the beginning of the respective period with the proceeds used to reduce
interest expense. For the prior years, these instruments were either
anti-dilutive or immaterial. All of the Convertible Preferred and the
convertible debt were converted into common shares during 1996 and thus were not
relevant to the calculation of earnings per share during 1997.
 
  STATEMENT OF CASH FLOWS
 
     For purposes of the Statement of Cash Flows, cash equivalents include time
deposits, certificates of deposit and all liquid debt instruments with
maturities at the date of purchase of three months or less.
 
  REVENUE RECOGNITION
 
     The Company follows the "sales method" of accounting for its oil and
natural gas revenue whereby the Company recognizes sales revenue on all oil or
natural gas sold to its purchasers, regardless of whether the sales are
proportionate to the Company's ownership in the property. A receivable or
liability is recognized only to the extent that the Company has an imbalance on
a specific property greater than the expected remaining proved reserves. As of
December 31, 1995 and 1996 and September 30, 1997, the Company's aggregate oil
and natural gas imbalances were not material to its financial statements.
 
                                       F-8
<PAGE>   118
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The Company recognizes revenue and expenses of purchased producing
properties commencing from the closing or agreement date, at which time the
Company also assumes control.
 
  FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK AND CONCENTRATIONS OF CREDIT
RISK
 
     The Company's product price hedging activities are described in Note 6 to
the consolidated financial statements. Credit risk relating to these hedges is
minimal because of the credit risk standards required for counter-parties and
monthly settlements. The Company has entered into hedging contracts with only
large and financially strong companies.
 
     The Company's financial instruments that are exposed to concentrations of
credit risk consist primarily of cash equivalents, short-term investments and
trade and accrued production receivables. The Company's cash equivalents and
short-term investments represent high-quality securities placed with various
investment grade institutions. This investment practice limits the Company's
exposure to concentrations of credit risk. The Company's trade and accrued
production receivables are dispersed among various customers and purchasers;
therefore, concentrations of credit risk are limited. Also, the Company's more
significant purchasers are large companies with excellent credit ratings. If
customers are considered a credit risk, letters of credit are the primary
security obtained to support lines of credit.
 
  FAIR VALUE OF FINANCIAL INSTRUMENTS
 
     As of December 31, 1995, December 31, 1996 and September 30, 1997, the
carrying value of the Company's debt and other financial instruments
approximates its fair market value. The Company's bank debt is based on a
floating interest rate and thus adjusts to market as interest rates change. The
Company's other financial instruments are primarily cash, cash equivalents,
short-term receivables and payables which approximate fair value due to the
nature of the instrument and the relatively short maturities.
 
  USE OF ESTIMATES
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amount of certain assets, liabilities,
revenues and expenses as of and for the reporting period. Estimates and
assumptions are also required in the disclosure of contingent assets and
liabilities as of the date of the financial statements. Actual results may
differ from such estimates.
 
  INTERIM FINANCIAL DATA
 
     In the opinion of management, the accompanying unaudited consolidated
financial statements contain all the adjustments (consisting of only normal
recurring accruals) necessary to present fairly the consolidated financial
position as of September 30, 1997, and the results of its operations and its
cash flow for the nine months ended September 30, 1996 and 1997.
 
2. PROPERTY AND EQUIPMENT
 
  UNEVALUATED OIL AND NATURAL GAS PROPERTIES EXCLUDED FROM DEPLETION
 
     Under full cost accounting, the Company may exclude certain unevaluated
costs from the amortization base pending determination of whether proved
reserves have been discovered or impairment has occurred. A
 
                                       F-9
<PAGE>   119
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
summary of the unevaluated properties excluded from oil and natural gas
properties being amortized at December 31, 1995 and 1996 and September 30, 1997
and the year in which they were incurred follows:
 
<TABLE>
<CAPTION>
                                        DECEMBER 31, 1995             DECEMBER 31, 1996
                                ---------------------------------   ----------------------
                                      INCURRED IN                        INCURRED IN
                                ------------------------            ----------------------
                                 1993     1994     1995    TOTAL    1995    1996    TOTAL
                                ------   ------   ------   ------   ----   ------   ------
                                                  (AMOUNTS IN THOUSANDS)
<S>                             <C>      <C>      <C>      <C>      <C>    <C>      <C>
Property acquisition cost.....  $1,151   $1,230   $2,909   $5,290   $252   $2,614   $2,866
Exploration costs.............      --    1,146      649    1,795     87    3,460    3,547
                                ------   ------   ------   ------   ----   ------   ------
          Total...............  $1,151   $2,376   $3,558   $7,085   $339   $6,074   $6,413
                                ======   ======   ======   ======   ====   ======   ======
</TABLE>
 
<TABLE>
<CAPTION>
                                                           SEPTEMBER 30, 1997
                                                              (UNAUDITED)
                                                         ----------------------
                                                              INCURRED IN
                                                         ----------------------
                                                         1995    1996     1997    TOTAL
                                                         ----   ------   ------   ------
                                                             (AMOUNTS IN THOUSANDS)
<S>                                                      <C>    <C>      <C>      <C>
Property acquisition cost..............................   $--   $  286   $  930   $1,216
Exploration costs......................................    53    1,457    3,663    5,173
                                                          ---   ------   ------   ------
          Total........................................   $53   $1,743   $4,593   $6,389
                                                          ===   ======   ======   ======
</TABLE>
 
     The Company anticipates that approximately $75 million of the costs
relating to the Chevron Acquisition which closed in December, 1997 will be
classified as unevaluated as of December 31, 1997.
 
     Costs are transferred into the amortization base on an ongoing basis as the
projects are evaluated and proved reserves established or impairment determined.
Pending determination of proved reserves attributable to the above costs, the
Company cannot assess the future impact on the amortization rate.
 
     General and administrative costs that directly relate to exploration and
development activities that were capitalized during the period totaled $480,000,
$630,000 and $1,224,000 for the years ended December 31, 1994, 1995 and 1996 and
$851,000 and $1,675,000 for the nine months ended September 30, 1996 and 1997,
respectively.
 
     Amortization per BOE was $4.03, $5.22, $5.99 and $6.40 for the years ended
December 31, 1994, 1995 and 1996 and nine months ended September 30, 1997,
respectively.
 
3. NOTES PAYABLE AND LONG-TERM INDEBTEDNESS
 
<TABLE>
<CAPTION>
                                                           DECEMBER 31,
                                                           -------------   SEPTEMBER 30,
                                                            1995    1996       1997
                                                           ------   ----   -------------
                                                              (AMOUNTS IN THOUSANDS)
                                                                            (UNAUDITED)
<S>                                                        <C>      <C>    <C>
Senior bank loan.........................................  $  100   $100   $      20,000
Convertible debentures...................................   3,296     --              --
Other notes payable......................................     255     92              28
                                                           ------   ----   -------------
                                                            3,651    192          20,028
Less portion due within one year.........................    (177)   (67)            (23)
                                                           ------   ----   -------------
  Total long-term debt...................................  $3,474   $125   $      20,005
                                                           ======   ====   =============
</TABLE>
 
                                      F-10
<PAGE>   120
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
  BANKS
 
   
     During 1996 the Company entered into a new $150 million credit facility
with NationsBank of Texas, N.A. ("NationsBank"). This refinancing closed on May
31, 1996 and has a borrowing base as of December 31, 1996 of $60 million.
    
 
     NationsBank is the agent bank and the facility includes two other banks.
The credit facility is a two-year revolving credit facility that converts to a
three year term loan in May 1998, unless renewed or extended. This revolver
conversion date was extended to May 1999 on April 1, 1997. The credit facility
is secured by virtually all the Company's oil and natural gas properties and
interest is payable at either the bank's prime rate or, depending on the
percentage of the borrowing base that is outstanding, ranging from LIBOR plus
 7/8% to LIBOR plus 1 3/8%. This credit facility also has several restrictions
including, among others: (i) a prohibition on the payment of dividends, (ii) a
requirement for a minimum equity balance, (iii) a requirement to maintain
positive working capital as defined, and (iv) a prohibition of most debt and
corporate guarantees. As of December 31, 1996, the Company had $100,000
outstanding on this line of credit and $645,000 of letters of credit
outstanding.
 
     The Company made two amendments to its bank credit facility during 1997 and
revised and restated its facility in December, 1997. See Note 12 for additional
disclosures.
 
  SUBORDINATED DEBT
 
     On March 23, 1994, Denbury issued Cdn. $2,000,000 principal amount of
6 3/4% unsecured convertible debentures and on January 17, 1995, Denbury issued
Cdn. $2,500,000 principal amount of 9 1/2% unsecured convertible debentures.
These debentures were converted into 566,590 Common Shares during 1996.
 
  INDEBTEDNESS REPAYMENT SCHEDULE
 
     The Company's indebtedness is repayable as follows:
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31, 1996
                                                    -------------------------------------
                                                                   OTHER NOTES
                       YEAR                         BANK LOAN        PAYABLE        TOTAL
                       ----                         ---------      -----------      -----
                                                           (AMOUNTS IN THOUSANDS)
<S>                                                 <C>            <C>              <C>
1997..............................................    $ --             $67          $ 67
1998..............................................      17              23            40
1999..............................................      33               2            35
2000..............................................      33              --            33
2001..............................................      17              --            17
                                                      ----             ---          ----
                                                      $100             $92          $192
                                                      ====             ===          ====
</TABLE>
 
                                      F-11
<PAGE>   121
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
<TABLE>
<CAPTION>
                                                     SEPTEMBER 30, 1997 (UNAUDITED)
                                                 ---------------------------------------
                                                                OTHER NOTES
                     YEAR                        BANK LOAN        PAYABLE         TOTAL
                     ----                        ---------      -----------      -------
                                                         (AMOUNTS IN THOUSANDS)
<S>                                              <C>            <C>              <C>
1997...........................................   $    --           $ 3          $     3
1998...........................................        --            23               23
1999...........................................     3,333             2            3,335
2000...........................................     6,667            --            6,667
2001...........................................     6,667            --            6,667
2002...........................................     3,333            --            3,333
                                                  -------           ---          -------
                                                  $20,000           $28          $20,028
                                                  =======           ===          =======
</TABLE>
 
4. INCOME TAXES
 
     The Company's tax provision is as follows:
 
<TABLE>
<CAPTION>
                                                                         NINE MONTHS ENDED
                                               YEAR ENDED DECEMBER 31,     SEPTEMBER 30,
                                               -----------------------   ------------------
                                               1994    1995     1996      1996       1997
                                               -----   -----   -------   -------    -------
                                                          (AMOUNTS IN THOUSANDS)
                                                                            (UNAUDITED)
<S>                                            <C>     <C>     <C>       <C>        <C>
Deferred
  Federal....................................   $718    $367    $5,312    $2,932     $5,907
  State......................................     --      --        --        --        338
                                                ----    ----    ------    ------     ------
          Total..............................   $718    $367    $5,312    $2,932     $6,245
                                                ====    ====    ======    ======     ======
</TABLE>
 
     Income tax expense for the year varies from the amount that would result
from applying Canadian federal and provincial tax rates to income before income
taxes as follows:
 
<TABLE>
<CAPTION>
                                                                      NINE MONTHS ENDED
                                            YEAR ENDED DECEMBER 31,     SEPTEMBER 30,
                                            -----------------------   ------------------
                                            1994    1995     1996      1996       1997
                                            -----   -----   -------   -------   --------
                                                       (AMOUNTS IN THOUSANDS)
                                                                         (UNAUDITED)
<S>                                         <C>     <C>     <C>       <C>       <C>
Deferred income tax provision calculated
  using the Canadian federal and
  provincial statutory combined tax rate
  of 44.34%...............................  $ 834   $ 479   $ 6,233    $3,224    $ 7,484
Increase resulting from:
  Imputed preferred dividend..............     --      --       568       511         --
  Non-deductible Canadian expenses........     --      --        97        64         --
Decrease resulting from:
  Effect of lower income tax rates on
     United States income.................   (116)   (112)   (1,586)     (867)    (1,239)
                                            -----   -----   -------    ------    -------
                                            $ 718   $ 367   $ 5,312    $2,932    $ 6,245
                                            =====   =====   =======    ======    =======
</TABLE>
 
                                      F-12
<PAGE>   122
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The Company at December 31, 1996 had net operating loss carryforwards for
U.S. tax purposes of approximately $18,329,000 and approximately $12,485,000 for
alternative minimum tax purposes. The net operating losses are scheduled to
expire as follows:
 
<TABLE>
<CAPTION>
                                                        INCOME     ALTERNATIVE
                         YEAR                             TAX      MINIMUM TAX
                         ----                           -------    ------------
                                                        (AMOUNTS IN THOUSANDS)
<S>                                                     <C>        <C>
2004..................................................   $   39       $   --
2005..................................................       11           --
2006..................................................      644          500
2007..................................................      714           99
2008..................................................    5,016        4,889
2009..................................................    3,377        2,868
2010..................................................    3,467        3,420
2011..................................................    5,061          710
</TABLE>
 
5. SHAREHOLDERS' EQUITY
 
  AUTHORIZED
 
     The Company is authorized to issue an unlimited number of Common Shares
with no par value, First Preferred Shares and Second Preferred Shares. The
preferred shares may be issued in one or more series with rights and conditions
as determined by the Directors.
 
  COMMON SHARES
 
     Each Common Share entitles the holder thereof to one vote on all matters on
which holders are permitted to vote. The Texas Pacific Group ("TPG") was granted
a right of first refusal in the private placement (see below), to maintain
proportionate ownership. No stockholder has any right to convert common stock
into other securities. The holders of shares of common stock are entitled to
dividends when and if declared by the Board of Directors from funds legally
available therefore and, upon liquidation, to a pro rata share in any
distribution to stockholders, subject to prior rights of the holders of the
preferred stock. The Company is restricted from declaring or paying any cash
dividend on the Common Shares by its bank loan agreement.
 
  1996 CAPITAL ADJUSTMENTS
 
     During 1996, the Company issued 250,000 Common Shares for the conversion of
the 6 3/4% Convertible Debentures of the Company and 75,000 Common Shares for
the exercise of half of the Cdn. $8.40 Warrants ("Warrants"). On October 10,
1996, the Company effected a one-for-two reverse split of its outstanding common
Shares. Effective October 15, 1996, all of the Company's outstanding 9 1/2%
Convertible Debentures ("Debentures") were converted by their holders in
accordance with their terms into 308,642 Common Shares. The holders of the
Debentures also received an additional 7,948 Common Shares in lieu of interest
which would have been due the holders absent an early conversion of the
Debentures. At a special meeting held on October 9, 1996, the shareholders of
the Company approved an amendment to the terms of the First Preferred Shares,
Series A ("Convertible Preferred") to allow the Company to require the
conversion of the Convertible Preferred at any time, provided that the
conversion rate in effect as of January 1, 1999 would apply to any required
conversion prior to that date. The Company converted all of the 1,500,000 shares
of Convertible Preferred on October 30, 1996 into 2,816,372 Common Shares. The
Company also issued an aggregate of 4,940,000 Common Shares on October 30, 1996
and November 1, 1996 at a net price of $12.035 per share as part of a public
offering for net proceeds to the Company of approximately $58.8 million (the
"Public Offering"). TPG purchased 800,000 of these shares at $12.035 per share.
 
                                      F-13
<PAGE>   123
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
  PRIVATE PLACEMENT OF SECURITIES
 
     In December 1995, the Company closed a $40 million private placement of
securities with partnerships that are affiliated with the Texas Pacific Group
("TPG Placement"). The TPG Placement was comprised of: (i) 4.166 million common
shares issued at $5.85 per share, (ii) 625,000 warrants at a price of $1.00 per
warrant entitling the holder to purchase 625,000 common shares at $7.40 per
share through December 21, 1999 and (iii) 1.5 million shares of $10 stated value
Convertible Preferred. The Convertible Preferred shares were initially
convertible at $7.40 of stated value per common share with such conversion rate
declining 2.5% per quarter. The shares also had a mandatory redemption at a
63.86% premium at December 21, 2000. The Convertible Preferred were converted
into 2,816,372 Common Shares on October 30, 1996. During the period that the
Convertible Preferred were outstanding, the Company made a charge to net income
to accrue the increase during the period in the mandatory redemption premium.
The Company may force conversion of the $7.40 warrants issued in the TPG
Placement after December 21, 1997, if the price of the Common Shares exceeds
$10.00 per share for a period of 40 consecutive days.
 
     As part of the TPG Placement, TPG was granted certain "piggyback"
registration rights which allow TPG to include all or part of the Common Shares
acquired by TPG in any registration statement of the Company during the first
two years. After the initial two years and until December 21, 2000, TPG may
request and receive one demand registration statement to register the Common
Shares acquired by TPG.
 
     The TPG agreement provides that TPG shall have the right, but not the
obligation, to maintain its pro rata ownership interest (after the assumed
exercise of their warrants) in the equity securities of the Company, in the
event that the Company issues any additional equity securities or securities
convertible into Common Shares of the Company, by purchasing additional shares
of the Company on the same terms and conditions. However, this right expires
should TPG's share holdings represent less than 20% of the outstanding Common
Shares. TPG waived its right to maintain its pro rata ownership with regard to
the Equity Offering.
 
     As part of the TPG Placement, Tortuga Investment Corp. was paid a financial
advisor fee of 333,333 Common Shares of the Company. The sole shareholder of
Tortuga Investment Corp. was appointed to the Board of Directors of the Company
and elected Chairman upon the closing of the TPG Placement.
 
  WARRANTS
 
     At December 31, 1996, 75,000 warrants were outstanding at an exercise price
of Cdn. $8.40 expiring on May 5, 2000. TPG holds 625,000 warrants at an exercise
price of $7.40 expiring on December 21, 1999. Each warrant entitles the holder
thereof to purchase one Common Share at any time prior to the expiration date.
 
  SPECIAL WARRANT ISSUES
 
     On April 25, 1995, the Company issued 614,143 Special Warrants at a price
of $4.70 (Cdn. $6.50) per Special Warrant for gross proceeds of $2,750,000
(29,036 Common Share Purchase Warrants were issued to Southcoast Capital
Corporation, as placement agent, in partial payment of their fee). Costs of the
issue were $436,000, resulting in net proceeds to the Company of approximately
$2,314,000. Each Special Warrant was exchanged, at no additional cost, for one
Common Share of Denbury on August 11, 1995.
 
                                      F-14
<PAGE>   124
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
  STOCK OPTIONS AND STOCK PURCHASE PLAN
 
     The Company maintains a Stock Option Plan which authorizes the grant of
options of up to 2,243,525 of Common Shares. Under the plan, incentive and
non-qualified options may be issued to officers, key employees and consultants.
The plan is administered by the Stock Option Committee of the Board.
 
     Following is a summary of stock option activity during the years ended
December 31, 1994, 1995 and 1996 and the nine months ended September 30, 1997:
 
<TABLE>
<CAPTION>
                                              YEAR ENDED DECEMBER 31,                            NINE MONTHS ENDED
                        -------------------------------------------------------------------        SEPTEMBER 30,
                               1994                   1995                    1996                     1997
                        -------------------    -------------------    ---------------------    ---------------------
                                   WEIGHTED               WEIGHTED                 WEIGHTED                 WEIGHTED
                                   AVERAGE                AVERAGE                  AVERAGE                  AVERAGE
                        NUMBER      PRICE      NUMBER      PRICE       NUMBER       PRICE       NUMBER       PRICE
                        -------    --------    -------    --------    ---------    --------    ---------    --------
                                                                                                    (UNAUDITED)
<S>                     <C>        <C>         <C>        <C>         <C>          <C>         <C>          <C>
OUTSTANDING AT
  BEGINNING OF
  PERIOD..............  541,312     $6.68      557,312     $6.30        731,925     $6.11      1,053,000     $ 7.63
Granted...............  138,750      5.64      274,500      5.89        525,500      8.96        750,512      13.64
Terminated............  (26,500)     9.35      (89,887)     7.79         (6,750)     6.28        (21,250)     12.02
Exercised.............  (96,250)     3.74      (10,000)     5.42       (197,675)     5.42       (270,056)      6.93
Expired...............      --         --          --         --             --        --             --         --
                        -------     -----      -------     -----      ---------     -----      ---------     ------
OUTSTANDING AT END OF
  PERIOD..............  557,312     $6.30      731,925     $6.11      1,053,000     $7.63      1,512,206     $10.69
                        =======     =====      =======     =====      =========     =====      =========     ======
Options exercisable at
  end of period.......  487,937     $6.39      539,675     $6.19        532,375     $6.82        395,222     $ 7.56
                        =======     =====      =======     =====      =========     =====      =========     ======
</TABLE>
 
<TABLE>
<CAPTION>
                                         WEIGHTED                                         WEIGHTED
OPTIONS OUTSTANDING AS OF    OPTIONS     AVERAGE      WEIGHTED AVERAGE      EXERCISABLE   AVERAGE
   DECEMBER 31, 1996:      OUTSTANDING    PRICE     REMAINING LIFE (YRS.)     OPTIONS      PRICE
- -------------------------  -----------   --------   ---------------------   -----------   --------
<S>                        <C>           <C>        <C>                     <C>           <C>
   Exercise price of:
     $3.65 to $6.99          372,000      $ 5.79             4.3              305,250      $ 5.77
     $7.00 to $9.99          444,625        7.78             6.5              175,906        7.70
     $10.00 to $14.87        236,375       10.23             9.4               51,219       10.09
</TABLE>
 
     In February 1996, the Company also implemented a Stock Purchase Plan which
authorizes the sale of up to 250,000 Common Shares to all full-time employees
with at least six months of service. Under the plan, the employees may
contribute up to 10% of their base salary and the Company matches 75% of the
employee contribution. The combined funds are used to purchase previously
unissued Common Shares of the Company based on its current market value at the
end of the each quarter. The Company recognizes compensation expense for the 75%
Company matching portion, which for 1996 totaled $147,000 and for the nine
months ended September 30, 1997 totaled $282,000. This plan is administered by
the Stock Purchase Plan Committee of the Board.
 
6. PRODUCT PRICE HEDGING CONTRACTS
 
     In October 1994, the Company entered into two financial contracts
("collars") to hedge 10,000 Mcf/d of natural gas production for calendar year
1995. The first natural gas contract for 8,000 Mcf/d of natural gas had a floor
of $1.845 per MMBTU and a ceiling of $2.095 per MMBTU. The second natural gas
contract was for 2,000 Mcf/d and had a floor of $1.775 per MMBTU and a ceiling
of $1.885 per MMBTU. These contracts covered 75% of the Company's net revenue
interest production in 1995 and increased oil and natural gas revenues by
approximately $800,000 during such period.
 
     In addition, in 1995 the Company entered into two swap contracts for oil.
The first oil contract was for 500 Bbls/d of oil at a price of $17.79 per barrel
of oil commencing on February 1, 1995, and ending on January 31, 1996. The
second oil contract was also for 500 Bbls/d of oil at a price of $18.83, for the
period commencing on April 12, 1995, and ending on December 30, 1995. These
contracts covered 43% of the Company's net revenue interest production for 1995
and decreased oil and natural gas revenues by approximately $47,000 during such
period.
 
                                      F-15
<PAGE>   125
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The Company did not have any hedge contracts in place as of December 31,
1996 or September 30, 1997.
 
7. COMMITMENTS AND CONTINGENCIES
 
     The Company has operating leases for the rental of office space, office
equipment, and vehicles. At December 31, 1996, and September 30, 1997 long-term
commitments for these items require the following future minimum rental
payments:
 
<TABLE>
<CAPTION>
                                                   DECEMBER 31,      SEPTEMBER 30,
                                                       1996              1997
                                                   ------------      -------------
                                                       (AMOUNTS IN THOUSANDS)
                                                                      (UNAUDITED)
<S>                                                <C>               <C>
1997.............................................     $  442            $  123
1998.............................................        441               474
1999.............................................        166               988
2000.............................................         --             1,196
2001.............................................         --             1,192
2002.............................................         --             1,178
                                                      ------            ------
                                                      $1,049            $5,151
                                                      ======            ======
</TABLE>
 
     On August 6, 1997, the Company entered into a ten year office lease. See
Note 12.
 
     The Company is subject to various possible contingencies which arise
primarily from interpretation of federal and state laws and regulations
affecting the oil and natural gas industry. Such contingencies include differing
interpretations as to the prices at which oil and natural gas sales may be made,
the prices at which royalty owners may be paid for production from their leases
and other matters. Although management believes it has complied with the various
laws and regulations, administrative rulings and interpretations thereof,
adjustments could be required as new interpretations and regulations are issued.
In addition, production rates, marketing and environmental matters are subject
to regulation by various federal and state agencies.
 
     The Company is not currently a party to any litigation which would have a
material impact on its financial statements. However, due to the nature of its
business, certain legal or administrative proceedings may arise in the ordinary
course of its business.
 
8. DIFFERENCES IN GENERALLY ACCEPTED ACCOUNTING PRINCIPLES BETWEEN
   CANADA AND THE UNITED STATES
 
     The consolidated financial statements have been prepared in accordance with
GAAP in Canada. The primary differences between Canadian and U.S. GAAP affecting
the Company's consolidated financial statements are as discussed below.
 
  LOSS ON EXTINGUISHMENT OF DEBT AND IMPUTED PREFERRED DIVIDENDS
 
     The most significant GAAP difference relates to the presentation of the
early extinguishment of debt and the imputed dividend on the Convertible
Preferred. During 1996, the Company expensed $1,281,000 relating to the imputed
preferred dividend, as required under Canadian GAAP. Under U.S. GAAP, this
dividend would be deducted from net income to compute the net income
attributable to the common shareholders. The Company also expensed its debt
issue cost relating to the Company's prior bank credit agreements totaling
$200,000 and $440,000 for 1995 and 1996, respectively. Under Canadian GAAP this
is an operating expense, while under U.S. GAAP a loss on early extinguishment of
debt is an extraordinary item. While net income per common share and all balance
sheet accounts are not affected by these differences in GAAP, the net income
 
                                      F-16
<PAGE>   126
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
for 1995 and 1996 under U.S. GAAP would be $714,000 and $10,025,000,
respectively, while under Canadian GAAP the amounts reported were $714,000 and
$8,744,000, respectively.
 
  EARNINGS PER SHARE
 
     In addition, the methodology for computing earnings per common share is not
consistent between the two countries. For Canadian purposes, dilutive securities
are only considered in the fully diluted presentation of earnings per share and
the proceeds from such dilutive securities are used to reduce debt in the
calculation. Under U.S. GAAP, the proceeds from such instruments are used to
repurchase Common Shares, using a slightly different methodology for the primary
and fully diluted calculations. For the years ended December 31, 1994 and 1995,
the stock options, warrants, convertible debt and the conversion of the
Convertible Preferred were either anti-dilutive or immaterial and were not
included in the earnings per share under either GAAP calculation. For the year
ended December 31, 1996, the Convertible Preferred was still anti-dilutive, but
the stock options, convertible debt and warrants were dilutive and included in
the earnings per share calculations, but with different results under the two
respective GAAP's. Under U.S. GAAP for the year ended December 31, 1996, the
primary earnings per share would be $.64 and the fully-diluted earnings per
share would be $.63 as compared to the $.67 and $.62 as reported under Canadian
GAAP.
 
     For the first nine months of 1996, under U.S. GAAP, the primary and
fully-diluted earnings per common share would be $0.36 and $0.35, compared to
the $0.37 and $0.36, respectively, as reported under Canadian GAAP. Under U.S.
GAAP for the first nine months of 1997, the primary and fully-diluted earnings
per common share would be $0.50 and $0.49, as compared to the $0.53 and $0.50,
respectively, as reported under Canadian GAAP.
 
     During 1996, the Company issued 4,940,000 Common Shares in a public
offering and used a portion of the proceeds to retire bank debt. On a pro forma
basis using U.S. GAAP and assuming that the Common Shares had been issued as of
January 1, 1996 and the interest expense for 1996 relating to the bank debt was
reversed, the primary earnings per share would be $.57 per share. No interest
income was assumed in the pro forma calculation even though the proceeds from
the equity issuance exceeded the bank debt that was retired.
 
  STOCK-BASED COMPENSATION
 
     In 1995, the United States Financial Accounting Standards Board issued
Statement of Financial Accounting Standards ("SFAS") No. 123, "Accounting for
Stock-Based Compensation." SFAS No. 123 is effective for fiscal years beginning
after December 31, 1995 and requires companies to use recognized option pricing
models to estimate the fair value of stock-based compensation, including stock
options. The Statement requires additional disclosures based on this fair value
based method of accounting for an employee stock option and encourages, but does
not require, companies to recognize the value of these stock option grants as
additional compensation using the methodology of SFAS No. 123. The Company has
elected to continue recognizing expense as prescribed by APB Opinion No. 25,
"Accounting for Stock Issued to Employees", as allowed under SFAS No. 123 rather
than recognizing compensation expense as calculated under SFAS No. 123. As such,
the adoption of SFAS No. 123 during 1996 did not have any effect on the
Company's consolidated financial statements.
 
                                      F-17
<PAGE>   127
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The Company has two stock-based compensation plans as more fully described
in Note 5. With regard to its stock option plan, the Company applies APB Opinion
No. 25 in accounting for this plan and accordingly no compensation cost has been
recognized. Had compensation expense been determined based on the fair value at
the grant dates for the stock option grants consistent with the method of SFAS
No. 123, the Company's net income and net income per common share would have
been reduced to the pro forma amounts indicated below:
 
<TABLE>
<CAPTION>
                                                              YEAR ENDED DECEMBER 31,
                                                              -----------------------
                                                               1995            1996
                                                              -------        --------
<S>                                                           <C>            <C>
Net income:
  As reported (thousands)...................................    $ 714          $8,744
  Pro forma (thousands).....................................      503           8,215
Net income per common share:
  As reported...............................................    $0.10          $ 0.67
  Pro forma.................................................     0.07            0.63
Stock options issued during period (thousands)..............      275             526
Weighted average exercise price.............................    $5.90          $ 8.96
Average per option compensation value of options
  granted(a)................................................     2.34            2.95
Compensation cost (thousands)...............................      320             801
</TABLE>
 
- ---------------
 
(a) Calculated in accordance with the Black-Scholes option pricing model, using
    the following assumptions; expected volatility computed using, as of the
    date of grant, the prior three-year monthly average of the Common Shares as
    listed on the TSE, which ranged from 32% to 67%; expected dividend
    yield -- 0%; expected option term -- 3 years, and risk-free rate of return
    as of the date of grant which ranged from 5.3% to 7.8%, based on the yield
    of five-year U.S. treasury securities.
 
  DEFERRED INCOME TAXES
 
     Deferred income taxes relate to temporary differences based on tax laws and
statutory rates in effect at the December 31, 1995 and 1996 balance sheet dates.
At December 31, 1995, and 1996, all deferred tax assets and liabilities were
computed based on Canadian GAAP amounts and were noncurrent as follows:
 
   
<TABLE>
<CAPTION>
                                                                            NINE MONTHS
                                                                               ENDED
                                                        DECEMBER 31,       SEPTEMBER 30,
                                                     ------------------    -------------
                                                      1995       1996          1997
                                                     -------    -------    -------------
                                                           (AMOUNTS IN THOUSANDS)
                                                                            (UNAUDITED)
<S>                                                  <C>        <C>        <C>
Deferred tax assets:
  Loss carryforwards...............................  $(4,511)   $(4,902)     $(10,100)
Deferred tax liabilities:
  Exploration and intangible development costs.....    5,942     11,645        23,088
                                                     -------    -------      --------
Net deferred tax liability.........................  $ 1,431    $ 6,743      $ 12,988
                                                     =======    =======      ========
</TABLE>
    
 
  RECENTLY ISSUED ACCOUNTING STANDARDS
 
     The Accounting Standards Executive Committee of the American Institute of
Certified Public Accountants has adopted Statement of Position 96-1,
"Environmental Remediation Liabilities," which provides guidance on the
recognition, measurement, display and disclosure of environmental remediation
liabilities. The Statement is effective for the Company's 1997 fiscal year.
Management evaluated such Statement and believes that it will not have a
material effect on the financial position or results of operations of the
Company.
 
                                      F-18
<PAGE>   128
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     In February 1997 the Financial Accounting Standards Board issued Statement
of Financial Accounting Standards No. 128 Earnings Per Share, ("SFAS 128")
simplifies the standards for computing earnings per share ("EPS") and makes them
more comparable to international EPS standards. SFAS 128 replaces the
presentation of primary EPS with a presentation of basic EPS. Basic EPS excludes
dilution and is computed by dividing income available to common shareholders by
the weighted average number of common shares outstanding for the period. Diluted
EPS reflects the potential dilution that could occur if securities or other
contracts to issue common stock were exercised, converted into common stock or
resulted in the issuance of common shares that then shared in the earnings of
the entity. Diluted EPS is computed similarly to fully diluted EPS pursuant to
Accounting Principles Board Opinion No. 15. SFAS 128 is effective for financial
statements issued for periods ending after December 15, 1997, including interim
periods. Earlier application is not permitted. Basic EPS for the year ended
December 31, 1994, 1995 and 1996 and the nine months ended September 30, 1996
and 1997 under SFAS 128 would $0.19, $0.10, $0.67, $0.37, and $0.53 per common
share respectively. This compares to $0.19, $0.10, $0.64, $0.36, and $0.50
respective periods as computed under current U.S. GAAP.
 
     In June 1997, the FASB issued SFAS No. 130, "Reporting Comprehensive
Income" and SFAS No. 131, "Disclosures About Segments of an Enterprise and
Related Information." SFAS No. 130 establishes standards for reporting and
display of comprehensive income in the financial statements. Comprehensive
income is the total of net income and all other non-owner changes in equity.
SFAS No. 131 requires that companies disclose segment data based on how
management makes decisions about allocating resources to segments and measuring
their performance. SFAS Nos. 130 and 131 are effective for 1998. Adoption of
these standards is not expected to have an effect on the Company's financial
statements, financial position or results of operations.
 
9. SUPPLEMENTAL INFORMATION
 
  SIGNIFICANT OIL AND NATURAL GAS PURCHASERS
 
     Oil and natural gas sales are made on a day-to-day basis or under
short-term contracts at the current area market price. The loss of any purchaser
would not be expected to have a material adverse effect upon operations. For the
period ended December 31, 1996, the Company sold 10% or more of its net
production of oil and natural gas to the following purchasers: Natural Gas
Clearinghouse (20%), Penn Union Energy Services (19%), Enron Oil Trading &
Transportation (13%), and Hunt Refining (15%).
 
  COSTS INCURRED
 
     The following table summarizes costs incurred in oil and natural gas
property acquisition, exploration and development activities. Property
acquisition costs are those costs incurred to purchase, lease, or otherwise
acquire property, including both undeveloped leasehold and the purchase of
revenues in place. Exploration costs include costs of identifying areas that may
warrant examination and in examining specific areas that are considered to have
prospects containing oil and natural gas reserves, including costs of drilling
exploratory wells, geological and geophysical costs and carrying costs on
undeveloped properties. Development costs are incurred to obtain access to
proved reserves, including the cost of drilling development wells, and to
provide facilities for extracting, treating, gathering, and storing the oil and
natural gas.
 
                                      F-19
<PAGE>   129
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     Costs incurred in oil and natural gas activities for the years ended
December 31, 1994, 1995 and 1996 and the nine months ended September 1997 are as
follows:
 
<TABLE>
<CAPTION>
                                                                              NINE MONTHS
                                                 YEAR ENDED DECEMBER 31,         ENDED
                                               ---------------------------   SEPTEMBER 30,
                                                1994      1995      1996         1997
                                               -------   -------   -------   -------------
                                                         (AMOUNTS IN THOUSANDS)
                                                                              (UNAUDITED)
<S>                                            <C>       <C>       <C>       <C>
Property acquisition.........................  $ 6,736   $17,198   $48,856      $17,592
Exploration..................................    1,796     1,687     4,592       14,058
Development..................................    8,371     9,639    33,409       39,123
                                               -------   -------   -------      -------
                                               $16,903   $28,524   $86,857      $70,773
                                               =======   =======   =======      =======
</TABLE>
 
  PROPERTY ACQUISITIONS
 
     During April 1996, the Company closed an acquisition of additional working
interests in five Mississippi oil and natural gas properties in which the
Company already owned an interest, plus certain overriding royalty interests in
other areas for approximately $7.5 million (the "Ottawa Acquisition"). The
properties were acquired from Ottawa Energy, Inc., a subsidiary of Highridge
Exploration Ltd.
 
     On April 17, 1996, Denbury entered into a purchase and sale agreement with
Amerada Hess Corporation to purchase producing oil and natural gas properties in
Mississippi, Louisiana and Alabama, plus certain overriding royalty interests in
Ohio, for approximately $37.2 million (the "Hess Acquisition"). The Company
funded this acquisition with bank financing from its NationsBank credit facility
and closed this transaction during June 1996.
 
     These two acquisitions were accounted for under purchase accounting and the
results of operations were consolidated during the second quarter of 1996. Pro
forma results of operations of the Company as if the acquisitions had occurred
at the beginning of each respective period are as follows:
 
<TABLE>
<CAPTION>
                                                                 YEAR ENDED
                                                                DECEMBER 31,
                                                              -----------------
                                                               1995      1996
                                                              -------   -------
<S>                                                           <C>       <C>
Revenues (thousands)........................................  $41,273   $61,573
Net income (thousands)......................................      899     9,820
Net income per common share.................................     0.13      0.75
</TABLE>
 
     In computing the pro forma results, depreciation, depletion and
amortization expense was computed using the units of production method, and an
adjustment was made to interest expense reflecting the bank debt that was
required to fund the acquisitions. The pro forma results reflect an increase of
$250,000 and $500,000 for 1996 and 1995, respectively, in general and
administrative expense for additional personnel and associated costs relating to
the acquired properties, net of anticipated allocations to operations and
capitalization of exploration costs.
 
                                      F-20
<PAGE>   130
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The following represents the revenues and direct operating expenses
attributable to the net interest acquired in the Hess Acquisition by the Company
and are presented on the full cost accrual basis of accounting. Depreciation,
depletion, and amortization, allocated general and administrative expenses,
interest expense and income, and income taxes have been excluded because the
property interests acquired represent only a portion of a business and these
expenses are not necessarily indicative of the expenses to be incurred by the
Company.
 
<TABLE>
<CAPTION>
                                                             YEAR ENDED DECEMBER 31,
                                                           ---------------------------
                                                            1994      1995      1996
                                                           -------   -------   -------
                                                             (AMOUNTS IN THOUSANDS)
<S>                                                        <C>       <C>       <C>
Revenues:
  Oil, natural gas and related product sales.............  $17,787   $18,210   $20,165
Direct operating expenses:
  Lease operating expense................................    6,598     7,888     6,302
                                                           -------   -------   -------
Excess of revenues over direct operating expenses........  $11,189   $10,322   $13,863
                                                           =======   =======   =======
</TABLE>
 
     The following represents the revenues and direct operating expenses
attributable to the net interest acquired in the Ottawa Acquisition by the
Company and are presented on the full cost accrual basis of accounting.
Depreciation, depletion, and amortization, allocated general and administrative
expenses, interest expense and income, and income taxes have been excluded
because the property interests acquired represent only a portion of a business
and these expenses are not necessarily indicative of the expenses to be incurred
by the Company.
 
<TABLE>
<CAPTION>
                                                               YEAR ENDED
                                                              DECEMBER 31,
                                                                  1996
                                                              ------------
                                                              (AMOUNTS IN
                                                               THOUSANDS)
<S>                                                           <C>
Revenues:
  Oil, natural gas and related product sales................     $4,215
Direct operating expenses:
  Lease operating expense...................................        760
                                                                 ------
Excess of revenues over direct operating expenses...........     $3,455
                                                                 ======
</TABLE>
 
     In November 1995, the Company acquired seven producing wells and certain
non-producing leases in the Gibson/Humphreys Fields of Terrebonne Parish,
Louisiana for approximately $10.2 million.
 
     See also Note 12 for disclosures regarding the Chevron Acquisition made in
December, 1997.
 
                                      F-21
<PAGE>   131
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
10. CONDENSED CONSOLIDATING FINANCIAL INFORMATION
 
     Denbury Management, Inc. will be issuing debt securities during early 1998
which will be fully and unconditionally guaranteed by Denbury Resources Inc.
Denbury Holdings Ltd. was merged into Denbury Resources Inc. in December 1997
and is not a guarantor of the debt. Condensed consolidating financial
information for Denbury Resources Inc. and Subsidiaries as of December 31, 1995
and 1996 and September 30, 1997 and for the years ended December 31, 1994, 1995
and 1996 and for the nine months ended September 30, 1996 and 1997 is as
follows:
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
                     CONDENSED CONSOLIDATING BALANCE SHEETS
                         (IN THOUSANDS OF U.S. DOLLARS)
 
<TABLE>
<CAPTION>
                                                                        DECEMBER 31, 1995
                                          ------------------------------------------------------------------------------
                                             DENBURY                         DENBURY                         DENBURY
                                           MANAGEMENT        DENBURY      RESOURCES INC.                  RESOURCES INC.
                                          INC. (ISSUER)   HOLDINGS LTD.    (GUARANTOR)     ELIMINATIONS    CONSOLIDATED
                                          -------------   -------------   --------------   ------------   --------------
<S>                                       <C>             <C>             <C>              <C>            <C>
ASSETS
Current assets..........................      $10,910        $    --         $    15        $      --        $10,925
Property and equipment (using full cost
  accounting)...........................       65,613             --              --               --         65,613
Investment in subsidiaries (equity
  method)...............................           --         71,693          70,130         (141,823)            --
Other assets............................        1,075             --           1,591           (1,563)         1,103
                                              -------        -------         -------        ---------        -------
         Total assets...................      $77,598        $71,693         $71,736        $(143,386)       $77,641
                                              =======        =======         =======        =========        =======
 
LIABILITIES AND
STOCKHOLDERS' EQUITY
 
Current liabilities.....................      $ 4,054        $    --         $     9        $      --        $ 4,063
Long-term liabilities...................        1,851          1,563           3,226           (1,563)         5,077
Convertible First Preferred Shares......           --             --          15,000               --         15,000
Shareholders' equity....................       71,693         70,130          53,501         (141,823)        53,501
                                              -------        -------         -------        ---------        -------
         Total liabilities and
           shareholders' equity.........      $77,598        $71,693         $71,736        $(143,386)       $77,641
                                              =======        =======         =======        =========        =======
</TABLE>
 
                                      F-22
<PAGE>   132
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
                     CONDENSED CONSOLIDATING BALANCE SHEETS
                         (IN THOUSANDS OF U.S. DOLLARS)
 
<TABLE>
<CAPTION>
                                                                           DECEMBER 31, 1996
                                             ------------------------------------------------------------------------------
                                                DENBURY                         DENBURY                         DENBURY
                                              MANAGEMENT        DENBURY      RESOURCES INC.                  RESOURCES INC.
                                             INC. (ISSUER)   HOLDINGS LTD.    (GUARANTOR)     ELIMINATIONS    CONSOLIDATED
                                             -------------   -------------   --------------   ------------   --------------
<S>                                          <C>             <C>             <C>              <C>            <C>
                  ASSETS
Current assets.............................      $ 28,722      $     --         $    280       $      --        $ 29,002
Property and equipment (using full cost
  accounting)..............................       134,996            --               --              --         134,996
Investment in subsidiaries (equity
  method)..................................            --       142,321          140,763        (283,084)             --
Other assets...............................         2,505            --            1,560          (1,558)          2,507
                                                 --------      --------         --------       ---------        --------
        Total assets.......................      $166,223      $142,321         $142,603       $(284,642)       $166,505
                                                 ========      ========         ========       =========        ========
              LIABILITIES AND
           STOCKHOLDERS' EQUITY
Current liabilities........................      $ 16,421      $     --         $     99       $      --        $ 16,520
Long-term liabilities......................         7,481         1,558               --          (1,558)          7,481
Shareholders' equity.......................       142,321       140,763          142,504        (283,084)        142,504
                                                 --------      --------         --------       ---------        --------
        Total liabilities and shareholders'
          equity...........................      $166,223      $142,321         $142,603       $(284,642)       $166,505
                                                 ========      ========         ========       =========        ========
</TABLE>
 
<TABLE>
<CAPTION>
                                                                     SEPTEMBER 30, 1997 (UNAUDITED)
                                             ------------------------------------------------------------------------------
                                                DENBURY                         DENBURY                         DENBURY
                                              MANAGEMENT        DENBURY      RESOURCES INC.                  RESOURCES INC.
                                             INC. (ISSUER)   HOLDINGS LTD.    (GUARANTOR)     ELIMINATIONS    CONSOLIDATED
                                             -------------   -------------   --------------   ------------   --------------
<S>                                          <C>             <C>             <C>              <C>            <C>
                  ASSETS
Current assets.............................      $ 23,453      $     --         $    387       $      --        $ 23,840
Property and equipment (using full cost
  accounting)..............................       183,383            --               --              --         183,383
Investment in subsidiaries (equity
  method)..................................            --       155,174          153,630        (308,804)             --
Other assets...............................         3,200            --            1,545          (1,544)          3,201
                                                 --------      --------         --------       ---------        --------
        Total assets.......................      $210,036      $155,174         $155,562       $(310,348)       $210,424
                                                 ========      ========         ========       =========        ========
              LIABILITIES AND
           STOCKHOLDERS' EQUITY
Current liabilities........................      $ 20,937      $     --         $      4       $      --        $ 20,941
Long-term liabilities......................        33,925         1,544               --          (1,544)         33,925
Shareholders' equity.......................       155,174       153,630          155,558        (308,804)        155,558
                                                 --------      --------         --------       ---------        --------
        Total liabilities and shareholders'
          equity...........................      $210,036      $155,174         $155,562       $(310,348)       $210,424
                                                 ========      ========         ========       =========        ========
</TABLE>
 
                                      F-23
<PAGE>   133
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
                  CONDENSED CONSOLIDATING STATEMENTS OF INCOME
                         (IN THOUSANDS OF U.S. DOLLARS)
 
<TABLE>
<CAPTION>
                                                                      YEAR ENDED DECEMBER 31, 1994
                                             ------------------------------------------------------------------------------
                                                DENBURY                         DENBURY                         DENBURY
                                              MANAGEMENT        DENBURY      RESOURCES INC.                  RESOURCES INC.
                                             INC. (ISSUER)   HOLDINGS LTD.    (GUARANTOR)     ELIMINATIONS    CONSOLIDATED
                                             -------------   -------------   --------------   ------------   --------------
<S>                                          <C>             <C>             <C>              <C>            <C>
Revenues...................................      $12,714        $    --         $     1         $     --        $12,715
Expenses...................................       10,607             --             227               --         10,834
                                                 -------        -------         -------         --------        -------
Income (loss) before the following:                2,107             --            (226)              --          1,881
  Equity in net earnings of subsidiaries...           --          1,389           1,389           (2,778)            --
                                                 -------        -------         -------         --------        -------
Income before income taxes.................        2,107          1,389           1,163           (2,778)         1,881
Provision for federal income taxes.........         (718)            --              --               --           (718)
                                                 -------        -------         -------         --------        -------
Net income.................................      $ 1,389        $ 1,389         $ 1,163         $ (2,778)       $ 1,163
                                                 =======        =======         =======         ========        =======
</TABLE>
 
<TABLE>
<CAPTION>
                                                                      YEAR ENDED DECEMBER 31, 1995
                                             ------------------------------------------------------------------------------
                                                DENBURY                         DENBURY                         DENBURY
                                              MANAGEMENT        DENBURY      RESOURCES INC.                  RESOURCES INC.
                                             INC. (ISSUER)   HOLDINGS LTD.    (GUARANTOR)     ELIMINATIONS    CONSOLIDATED
                                             -------------   -------------   --------------   ------------   --------------
<S>                                          <C>             <C>             <C>              <C>            <C>
Revenues...................................      $20,107        $    --          $  460        $    (458)       $20,109
Expenses...................................       19,026             --             460             (458)        19,028
                                                 -------        -------          ------        ---------        -------
Income (loss) before the following:                1,081             --              --               --          1,081
  Equity in net earnings of subsidiaries...           --            714             714           (1,428)            --
                                                 -------        -------          ------        ---------        -------
Income before income taxes.................        1,081            714             714           (1,428)         1,081
Provision for federal income taxes.........         (367)            --              --               --           (367)
                                                 -------        -------          ------        ---------        -------
Net income.................................      $   714        $   714          $  714        $  (1,428)       $   714
                                                 =======        =======          ======        =========        =======
</TABLE>
 
<TABLE>
<CAPTION>
                                                                      YEAR ENDED DECEMBER 31, 1996
                                             ------------------------------------------------------------------------------
                                                DENBURY                         DENBURY                         DENBURY
                                              MANAGEMENT        DENBURY      RESOURCES INC.                  RESOURCES INC.
                                             INC. (ISSUER)   HOLDINGS LTD.    (GUARANTOR)     ELIMINATIONS    CONSOLIDATED
                                             -------------   -------------   --------------   ------------   --------------
<S>                                          <C>             <C>             <C>              <C>            <C>
Revenues...................................      $53,631        $    --         $   179         $   (161)       $53,649
Expenses...................................       38,008             --           1,746             (161)        39,593
                                                 -------        -------         -------         --------        -------
Income (loss) before the following:               15,623             --          (1,567)              --         14,056
  Equity in net earnings of subsidiaries...           --         10,311          10,311          (20,622)            --
                                                 -------        -------         -------         --------        -------
Income before income taxes.................       15,623         10,311           8,744          (20,622)        14,056
Provision for federal income taxes.........       (5,312)            --              --               --         (5,312)
                                                 -------        -------         -------         --------        -------
Net income.................................      $10,311        $10,311         $ 8,744         $(20,622)       $ 8,744
                                                 =======        =======         =======         ========        =======
</TABLE>
 
                                      F-24
<PAGE>   134
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
                  CONDENSED CONSOLIDATING STATEMENTS OF INCOME
                         (IN THOUSANDS OF U.S. DOLLARS)
 
<TABLE>
<CAPTION>
                                                            NINE MONTHS ENDED SEPTEMBER 30, 1996 (UNAUDITED)
                                             ------------------------------------------------------------------------------
                                                DENBURY                         DENBURY                         DENBURY
                                              MANAGEMENT        DENBURY      RESOURCES INC.                  RESOURCES INC.
                                             INC. (ISSUER)   HOLDINGS LTD.    (GUARANTOR)     ELIMINATIONS    CONSOLIDATED
                                             -------------   -------------   --------------   ------------   --------------
<S>                                          <C>             <C>             <C>              <C>            <C>
Revenues...................................      $35,130        $    --         $   117        $    (113)       $35,134
Expenses...................................       26,507             --           1,468             (113)        27,862
                                                 -------        -------         -------        ---------        -------
Income (loss) before the following:                8,623             --          (1,351)              --          7,272
  Equity in net earnings of subsidiaries...           --          5,691           5,691          (11,382)            --
                                                 -------        -------         -------        ---------        -------
Income before income taxes.................        8,623          5,691           4,340          (11,382)         7,272
Provision for federal income taxes.........       (2,932)            --              --               --         (2,932)
                                                 -------        -------         -------        ---------        -------
Net income.................................      $ 5,691        $ 5,691         $ 4,340        $ (11,382)       $ 4,340
                                                 =======        =======         =======        =========        =======
</TABLE>
 
<TABLE>
<CAPTION>
                                                            NINE MONTHS ENDED SEPTEMBER 30, 1997 (UNAUDITED)
                                             ------------------------------------------------------------------------------
                                                DENBURY                         DENBURY                         DENBURY
                                              MANAGEMENT        DENBURY      RESOURCES INC.                  RESOURCES INC.
                                             INC. (ISSUER)   HOLDINGS LTD.    (GUARANTOR)     ELIMINATIONS    CONSOLIDATED
                                             -------------   -------------   --------------   ------------   --------------
<S>                                          <C>             <C>             <C>              <C>            <C>
Revenues...................................      $61,066        $    --         $   105        $    (102)       $61,069
Expenses...................................       44,191             --             102             (102)        44,191
                                                 -------        -------         -------        ---------        -------
Income (loss) before the following:               16,875             --               3               --         16,878
  Equity in net earnings of subsidiaries...           --         10,630          10,630          (21,260)            --
                                                 -------        -------         -------        ---------        -------
Income before income taxes.................       16,875         10,630          10,633          (21,260)        16,878
Provision for federal income taxes.........       (6,245)            --              --               --         (6,245)
                                                 -------        -------         -------        ---------        -------
Net income.................................      $10,630        $10,630         $10,633        $ (21,260)       $10,633
                                                 =======        =======         =======        =========        =======
</TABLE>
 
11. SUPPLEMENTAL RESERVE INFORMATION (UNAUDITED)
 
     Net proved oil and natural gas reserve estimates as of December 31, 1995
and 1996 were prepared by Netherland & Sewell and the net oil and natural gas
reserve estimates as of December 31, 1994 were prepared by The Scotia Group,
Inc., both independent petroleum engineers located in Dallas, Texas. The
reserves were prepared in accordance with guidelines established by the
Securities and Exchange Commission and accordingly, were based on existing
economic and operating conditions. Oil and natural gas prices in effect as of
the reserve report date were used without any escalation except in those
instances where the sale is covered by contract, in which case the applicable
contract prices including fixed and determinable escalations were used for the
duration of the contract, and thereafter the last contract price was used.
Operating costs, production and ad valorem taxes and future development costs
were based on current costs with no escalation.
 
     There are numerous uncertainties inherent in estimating quantities of
proved reserves and in projecting the future rates of production and timing of
development expenditures. The following reserve data represents estimates only
and should not be construed as being exact. Moreover, the present values should
not be construed as the current market value of the Company's oil and natural
gas reserves or the costs that would be incurred to obtain equivalent reserves.
All of the reserves are located in the United States.
 
                                      F-25
<PAGE>   135
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
  ESTIMATED QUANTITIES OF RESERVES
 
<TABLE>
<CAPTION>
                                                        YEAR ENDED DECEMBER 31,
                                          ---------------------------------------------------
                                               1994              1995              1996
                                          ---------------   ---------------   ---------------
                                           OIL      GAS      OIL      GAS      OIL      GAS
                                          (MBBL)   (MMCF)   (MBBL)   (MMCF)   (MBBL)   (MMCF)
                                          ------   ------   ------   ------   ------   ------
<S>                                       <C>      <C>      <C>      <C>      <C>      <C>
Balance beginning of year...............  3,583    13,029   4,230    42,047    6,292   48,116
  Revisions of previous estimates.......    (48)   2,827      830    (1,620)    (490)   3,737
  Revisions due to price changes........     --       --       --       --     1,053      402
  Extensions, discoveries and other
     additions..........................    640    14,978     732       --     3,492    5,480
  Production............................   (489)   (3,326)   (728)   (4,844)  (1,500)  (8,933)
  Acquisition of minerals in place......    544    14,539   1,228    12,533    6,205   25,300
                                          -----    ------   -----    ------   ------   ------
Balance at end of period................  4,230    42,047   6,292    48,116   15,052   74,102
                                          =====    ======   =====    ======   ======   ======
Proved developed reserves:
  Balance at beginning of year..........  3,418    12,303   3,755    35,578    5,290   34,894
  Balance at end of period..............  3,755    35,578   5,290    34,894   13,371   58,634
</TABLE>
 
STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS AND CHANGES THEREIN
RELATING TO PROVED OIL AND NATURAL GAS RESERVES
 
     The Standardized Measure of Discounted Future Net Cash Flows and Changes
Therein Relating to Proved Oil and Natural Gas Reserves ("Standardized Measure")
does not purport to present the fair market value of the Company's oil and
natural gas properties. An estimate of such value should consider, among other
factors, anticipated future prices of oil and natural gas, the probability of
recoveries in excess of existing proved reserves, the value of probable reserves
and acreage prospects, and perhaps different discount rates. It should be noted
that estimates of reserve quantities, especially from new discoveries, are
inherently imprecise and subject to substantial revision.
 
     Under the Standardized Measure, future cash inflows were estimated by
applying year-end prices, adjusted for fixed and determinable escalations, to
the estimated future production of year-end proved reserves. Future cash inflows
were reduced by estimated future production and development costs based on
year-end costs to determine pre-tax cash inflows. Future income taxes were
computed by applying the statutory tax rate to the excess of pre-tax cash
inflows over the Company's tax basis in the associated proved oil and natural
gas properties. Tax credits and net operating loss carry forwards were also
considered in the future income tax calculation. Future net cash inflows after
income taxes were discounted using a 10% annual discount rate to arrive at the
Standardized Measure.
 
<TABLE>
<CAPTION>
                                                               DECEMBER 31,
                                                      -------------------------------
                                                        1994       1995       1996
                                                      --------   --------   ---------
                                                          (AMOUNTS IN THOUSANDS)
<S>                                                   <C>        <C>        <C>
Future cash inflows.................................  $126,129   $214,932   $ 627,476
Future production costs.............................   (35,069)   (56,323)   (134,986)
Future development costs............................    (7,369)   (16,154)    (28,722)
                                                      --------   --------   ---------
Future net cash flows before taxes..................    83,691    142,455     463,768
  10% annual discount for estimated timing of cash
     flows..........................................   (31,000)   (45,490)   (147,670)
                                                      --------   --------   ---------
Discounted future net cash flows before taxes.......    52,691     96,965     316,098
Discounted future income taxes......................    (5,763)   (15,801)    (74,226)
                                                      --------   --------   ---------
Standardized measure of discounted future net
  cash..............................................  $ 46,928   $ 81,164   $ 241,872
                                                      ========   ========   =========
</TABLE>
 
                                      F-26
<PAGE>   136
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The following table sets forth an analysis of changes in the Standardized
Measure of Discounted Future Net Cash Flows from proved oil and natural gas
reserves:
 
<TABLE>
<CAPTION>
                                                           YEAR ENDED DECEMBER 31,
                                                        -----------------------------
                                                         1994       1995       1996
                                                        -------   --------   --------
                                                           (AMOUNTS IN THOUSANDS)
<S>                                                     <C>       <C>        <C>
Beginning of year.....................................  $28,465   $ 46,928   $ 81,164
Sales of oil and natural gas produced, net of
  production costs....................................   (8,383)   (13,243)   (39,385)
Net changes in sales prices...........................      863     23,037    116,587
Extensions and discoveries, less applicable future
  development and production costs....................   13,416      1,926     34,113
Previously estimated development costs incurred.......    2,492      2,193      5,278
Revisions of previous estimates, including revised
  estimates of development costs, reserves and rates
  of production.......................................   (2,914)     3,958      7,747
Accretion of discount.................................    2,847      4,693      8,116
Purchase of minerals in place.........................   15,732     21,710     86,677
Net change in income taxes............................   (5,590)   (10,038)   (58,425)
                                                        -------   --------   --------
End of period.........................................  $46,928   $ 81,164   $241,872
                                                        =======   ========   ========
</TABLE>
 
12. SUBSEQUENT EVENTS (UNAUDITED)
 
   
     On December 30, 1997, Denbury acquired producing oil and natural gas
properties in Mississippi, for approximately $202 million (the "Chevron
Acquisition"). The acquisition included 122 wells, of which 96 wells will be
Company operated. The Company funded this acquisition with bank financing from a
revised and restated credit facility.
    
 
     This acquisition was accounted for under purchase accounting and the
results of operations will be consolidated effective December 31, 1997. Pro
forma results of operations of the Company as if the Chevron Acquisition had
occurred at the beginning of each respective period are as follows:
 
   
<TABLE>
<CAPTION>
                                                                         NINE MONTHS ENDED
                                                       YEAR ENDED          SEPTEMBER 30,
                                                      DECEMBER 31,     ----------------------
                                                          1996           1996         1997
                                                     --------------    ---------    ---------
                                                     (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                                  <C>               <C>          <C>
Revenues...........................................      $77,311         $52,534      $75,103
Net income.........................................        4,909           1,181        6,886
Net income per common share........................         0.37            0.10         0.34
</TABLE>
    
 
     In computing the pro forma results, depreciation, depletion and
amortization expense was computed using the units of production method, and an
adjustment was made to interest expense reflecting the bank debt that was
required to fund the acquisitions. The pro forma results reflect an increase of
$687,000, $514,000 and $514,000 for 1996 and the nine months ended September 30,
1996 and 1997, respectively, in general and administrative expense for
additional personnel and associated costs relating to the acquired properties,
net of anticipated allocations to operations and capitalization of exploration
costs.
 
                                      F-27
<PAGE>   137
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The following represents the revenues and direct operating expenses
attributable to the net interest acquired in the Chevron Acquisition by the
Company and are presented on the full cost accrual basis of accounting.
Depreciation, depletion, and amortization, allocated general and administrative
expenses, interest expense and income, and income taxes have been excluded
because the property interests acquired represent only a portion of a business
and these expenses are not necessarily indicative of the expenses to be incurred
by the Company.
 
<TABLE>
<CAPTION>
                                                          YEAR ENDED        NINE MONTHS
                                                         DECEMBER 31,          ENDED
                                                       -----------------   SEPTEMBER 30,
                                                        1995      1996         1997
                                                       -------   -------   -------------
<S>                                                    <C>       <C>       <C>
Revenues:
  Oil, natural gas and related product...............  $17,460   $23,662      $14,034
Direct operating expenses:
  Lease operating expense............................    5,825     6,650        5,237
                                                       -------   -------      -------
Excess of revenues over direct operating expenses....  $11,635   $17,012      $ 8,797
                                                       =======   =======      =======
</TABLE>
 
     The Company made two amendments to its credit facility during 1997. In
April, 1997, the Company amended its bank credit facility (i) to extend the
revolver by one year to May 31, 1999, (ii) to extend the termination date by one
year to May 31, 2002, and (iii) to reduce the commitment fee percentages.
 
     In October, 1997, the Company further amended its bank credit facility to
(i) modify the security requirement of the facility such that mortgages will
only be required by the banks to the extent that they were in place as of the
date of the amendment and (ii) to modify certain other definitions and minor
provisions of the agreement.
 
   
     In order to fund the Chevron Acquisition, the Company revised and restated
its credit facility (the "Credit Facility") with NationsBank of Texas, as agent,
("NationsBank") a group of banks and increased the size of the facility from
$150 million to $300 million. This restatement was made during the fourth
quarter of 1997, with an adjusted borrowing base as of December 31, 1997 of $260
million of which $20 million was available. The Credit Facility includes a five
year revolving credit facility of $165 million, unless renewed or extended, plus
an Acquisition Tranche of $95 million. Unless the acquisition tranche is repaid,
the interest rate on the total loan escalates 0.25% each quarter beginning March
1, 1998 through March 31, 1999. Upon repayment of the acquisition tranche, the
interest rate reverts back to the LIBOR margins applicable to borrowings where
borrowings under the Acquisition Tranche are not outstanding.
    
 
     On August 6, 1997, the Company entered into a ten year office lease for its
corporate headquarters which is expected to commence late in 1998. The estimated
minimum annual rental payments for the first five years of the lease are
projected to be $1.15 million per year (commencing on occupancy) and the minimum
annual rental payments during the remaining five years of the lease are
projected to be $1.25 million per year.
 
                                      F-28
<PAGE>   138
 
                    DENBURY RESOURCES INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
UNAUDITED QUARTERLY INFORMATION
 
     The following table presents unaudited summary financial information on a
quarterly basis for 1995 and 1996 and the first three quarters of 1997 (in
thousands except per share amounts).
 
<TABLE>
<CAPTION>
                                                                 1995
                                            -----------------------------------------------
                                            MARCH 31   JUNE 30   SEPTEMBER 30   DECEMBER 31
                                            --------   -------   ------------   -----------
<S>                                         <C>        <C>       <C>            <C>
Revenues..................................  $ 4,381    $ 4,636     $ 4,841        $ 6,251
Expenses..................................    3,723      4,583       4,554          6,168
Net income................................      435         35         190             54
Net income per share (primary)............     0.08       0.00        0.02           0.00
Cash flow from operations(a)..............    2,112      1,913       2,234          3,135
</TABLE>
 
<TABLE>
<CAPTION>
                                                                 1996
                                            -----------------------------------------------
                                            MARCH 31   JUNE 30   SEPTEMBER 30   DECEMBER 31
                                            --------   -------   ------------   -----------
<S>                                         <C>        <C>       <C>            <C>
Revenues..................................  $ 9,092    $11,682     $14,359        $18,516
Expenses..................................    6,767      9,608      11,486         11,732
Net income................................    1,380      1,215       1,745          4,404
Net income per share (primary)(b).........     0.12       0.11        0.14           0.25
Cash flow from operations(a)..............    6,065      7,238       8,464         12,373
</TABLE>
 
<TABLE>
<CAPTION>
                                                          1997
                                            ---------------------------------
                                            MARCH 31   JUNE 30   SEPTEMBER 30
                                            --------   -------   ------------
<S>                                         <C>        <C>       <C>            <C>
Revenues..................................  $21,653    $19,015     $20,401
Expenses..................................   13,375     15,512      15,304
Net income................................    5,215      2,207       3,211
Net income per share (primary)............     0.26       0.11        0.16
Cash flow from operations(a)..............   14,922     12,001      13,243
</TABLE>
 
- ---------------
 
(a) Exclusive of the net change in non-cash working capital balances.
 
(b) Due to the significant variances between quarters in net income and average
    shares outstanding, the combined quarterly income per share does not equal
    the reported earnings per share for 1996.
 
                                      F-29
<PAGE>   139
 
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Board of Directors
of Denbury Resources Inc.
 
     We have audited the accompanying statement of revenues and direct operating
expenses of Chevron U.S.A. Inc.'s working interest in the Heidelberg Fields (the
"Properties") acquired by Denbury Resources Inc. (the "Company") for each of the
two years in the period ended December 31, 1996 and for the nine months ended
September 30, 1997. This statement is the responsibility of the Company's
management. Our responsibility is to express an opinion on this statement based
on our audit.
 
     We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the statement of revenues and direct
operating expenses is free of material misstatement. An audit includes
examining, on a test basis, evidence supporting the amounts and disclosures in
the statement of revenues and direct operating expenses. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall presentation of the statement of
revenues and direct operating expenses. We believe that our audit provides a
reasonable basis for our opinion.
 
     The accompanying statement of revenues and direct operating expenses was
prepared for the purpose of complying with the rules and regulations of the
Securities and Exchange Commission (for inclusion in the registration statement
on Form S-3 of Denbury Resources Inc.) as described in Note 1 and is not
intended to be a complete presentation of the Properties' revenues and expenses.
 
     In our opinion, the statement of revenues and direct operating expenses
referred to above presents fairly, in all material respects, the revenues and
direct operating expenses of the Properties described in Note 1 for each of the
two years in the period ended December 31, 1996 and for the nine months ended
September 30, 1997, in conformity with generally accepted accounting principles.
 
Price Waterhouse LLP
 
San Francisco, California
December 19, 1997
 
                                      F-30
<PAGE>   140
 
   
       STATEMENT OF REVENUES AND DIRECT OPERATING EXPENSES OF PROPERTIES
    
 
<TABLE>
<CAPTION>
                                                             YEAR ENDED
                                                            DECEMBER 31,       NINE MONTHS ENDED
                                                         ------------------      SEPTEMBER 30,
                                                          1995       1996            1997
                                                         -------    -------    -----------------
                                                                 (AMOUNTS IN THOUSANDS)
<S>                                                      <C>        <C>        <C>
Revenues:
  Oil, natural gas and related product sales.........    $17,460    $23,662         $14,034
Direct operating expenses:
  Lease operating expense............................      5,825      6,650           5,237
                                                         -------    -------         -------
Excess of revenues over direct operating expense.....    $11,635    $17,012         $ 8,797
                                                         =======    =======         =======
</TABLE>
 
        The accompanying notes are an integral part of these statements.
 
                                      F-31
<PAGE>   141
 
                       NOTES TO STATEMENT OF REVENUES AND
                    DIRECT OPERATING EXPENSES OF PROPERTIES
 
1. BASIS OF PRESENTATION
 
     Denbury Resources Inc. (the "Company") agreed on November 25, 1997 to
acquire Chevron U.S.A. Inc.'s working interest in the Heidelberg Fields for
approximately $202 million. The Properties are located in the state of
Mississippi. The acquisition is expected to close in December 1997. These
acquired Properties will be consolidated in the Company's financial statements
effective January 1, 1998. Other owners of working interests in the Properties
covered by the acquisition agreement have the preferential right to acquire the
Properties, which if exercised could reduce the interest acquired by the
Company.
 
     Historical financial statements reflecting financial position, results of
operations and cash flows required by generally accepted accounting principles
are not presented, as such information is neither readily available on an
individual property basis nor meaningful for the Properties acquired because the
entire acquisition cost is being assigned to oil and natural gas properties.
Accordingly, the statement of revenues and direct operating expenses is
presented in lieu of the financial statements required under Rule 3-05 of
Securities and Exchange Commission Regulation S-X.
 
     The accompanying statement of revenues and direct operating expenses (the
"Statement") relates only to the working interest in the Properties acquired and
may not be representative of future operations. The Statement includes revenues
from natural gas sales and direct operating expenses for each of the periods
presented. The Statement does not include federal and state income taxes,
interest, depletion, depreciation and amortization or general and administrative
expenses because such amounts would not be indicative of those expenses which
would be incurred by the Company.
 
     Revenues in the Statement are recognized on the entitlement method.
 
     The accompanying Statement has been prepared on the accrual basis in
accordance with generally accepted accounting principles. Preparation of the
Statement in conformity with generally accepted accounting principles requires
management to make estimates and assumptions that affect the amounts reported in
the Statement and accompanying notes. Actual results could differ from those
estimates.
 
2. COMMITMENTS AND CONTINGENCIES
 
     Chevron U.S.A. Inc. is a defendant in numerous lawsuits, including, along
with other oil companies, actions challenging oil royalty and severance tax
payments based on posted prices. Plaintiffs may seek to recover large and
sometimes unspecified amounts, and some matters may remain unresolved for
several years. The amount of such future cost is indeterminable. Such liability
for events occurring prior to the effective date of the acquisition shall be
retained by Chevron U.S.A. Inc. and Chevron U.S.A. Inc. has indemnified the
Company for any costs incurred by it in conjunction with these suits.
 
     Given the nature of the Properties acquired and as stipulated in the
purchase agreement, the Company is subject to loss contingencies, if any,
pursuant to existing or expected environmental laws, regulations, and leases
covering the acquired Properties. Management does not believe such matters will
have a material impact on the Statement.
 
3. CONCENTRATION OF CUSTOMERS
 
     During the year ended December 31, 1996 and the nine months ended September
30, 1997, approximately 67% and 31% of the Properties' production was sold to
Hunt Refining Company and Southland Oil Company, respectively. During the year
ended December 31, 1995, approximately 88% and 10% of the Properties' production
was sold to Amerada Hess Corporation and Hunt Refining Company, respectively.
While management believes that its relationships with these purchasers is good,
any loss of revenue from these purchasers due to nonpayment or late payment by
the purchaser would have an adverse effect on the Statement.
 
                                      F-32
<PAGE>   142
 
                       NOTES TO STATEMENT OF REVENUES AND
             DIRECT OPERATING EXPENSES OF PROPERTIES -- (CONTINUED)
 
4. OIL AND NATURAL GAS RESERVES INFORMATION (UNAUDITED)
 
   
     The Properties' proved oil and natural gas reserves at December 31, 1997,
1996 and 1995 have been estimated by the Company's petroleum consultants,
Netherland & Sewell, in accordance with guidelines established by the Securities
and Exchange Commission ("SEC"). The December 31, 1997 reserves have been
adjusted by production from the Properties to estimate the September 30, 1997
reserves.
    
 
   
<TABLE>
<CAPTION>
                                                                OIL         GAS
          ESTIMATED QUANTITIES OF PROVED RESERVES              (MBBL)     (MMCF)
          ---------------------------------------             --------    -------
<S>                                                           <C>         <C>
January 1, 1995.............................................  31,331.1    3,303.7
  Production................................................   1,321.5      290.6
                                                              --------    -------
December 31, 1995...........................................  30,009.6    3,013.1
  Production................................................   1,252.0      245.1
                                                              --------    -------
December 31, 1996...........................................  28,757.6    2,768.0
  Production................................................     793.6      160.1
                                                              --------    -------
September 30, 1997..........................................  27,964.0    2,607.9
                                                              ========    =======
Proved Developed Reserves:
  As of January 1, 1995.....................................  17,230.8    3,303.7
  As of December 31, 1995...................................  15,909.3    3,013.1
  As of December 31, 1996...................................  14,657.3    2,768.0
  As of September 30, 1997..................................  13,863.7    2,607.9
</TABLE>
    
 
STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS AND CHANGES THEREIN
RELATED TO OIL AND NATURAL GAS RESERVES
 
     The standardized measure of discounted future net cash flows ("Standardized
Measure") relating to oil and natural gas reserves acquired is calculated in
accordance with regulations prescribed by the SEC. The Standardized Measure has
been prepared assuming year-end selling prices adjusted for future fixed and
determinable price changes, year-end development and production costs and a 10%
annual discount rate. The reserves and the related Standardized Measure at
September 30, 1997 were adjusted for production during the nine-months ended
September 30, 1997 and the years ended December 31, 1996 and 1995, and in
addition, Standardized Measure was also adjusted for price changes to derive
reserves and the Standardized Measure as of September 30, 1997, December 31,
1996 and December 31, 1995. The Standardized Measure is not a fair market value
of the mineral interests purchased and the Standardized Measure presented for
the proved oil and natural gas reserves does not purport to present the fair
market value of the oil and natural gas properties. An estimate of such value
should consider, among other factors, anticipated future prices of oil and
natural gas, the probability of recoveries of existing proved reserves, the
value of probable reserves and acreage prospects, and perhaps different discount
rates. It should be noted that estimates of reserve quantities are inherently
imprecise and subject to substantial revision.
 
<TABLE>
<CAPTION>
                                                      DECEMBER 31,
                                                 ----------------------    SEPTEMBER 30,
                                                   1995         1996           1997
                                                 ---------    ---------    -------------
                                                         (AMOUNTS IN THOUSANDS)
<S>                                              <C>          <C>          <C>
Future cash inflows............................  $ 470,689    $ 613,780      $ 426,489
Future production and development costs........   (201,520)    (204,876)      (189,243)
                                                 ---------    ---------      ---------
Future net cash flows undiscounted.............    269,169      408,904        237,246
10% annual discount for estimated timing of
  cash flows...................................   (142,503)    (203,206)      (113,931)
                                                 ---------    ---------      ---------
Standardized measure of discounted future net
  cash flows...................................  $ 126,666    $ 205,698      $ 123,315
                                                 =========    =========      =========
</TABLE>
 
                                      F-33
<PAGE>   143
 
                       NOTES TO STATEMENT OF REVENUES AND
             DIRECT OPERATING EXPENSES OF PROPERTIES -- (CONTINUED)
 
     The following are principal sources of changes in the standardized measure
of discounted future net cash flows:
 
<TABLE>
<CAPTION>
                                                        YEAR ENDED          NINE MONTHS
                                                       DECEMBER 31,            ENDED
                                                   --------------------    SEPTEMBER 30,
                                                     1995        1996          1997
                                                   --------    --------    -------------
                                                          (AMOUNTS IN THOUSANDS)
<S>                                                <C>         <C>         <C>
Standardized measure of discounted future net
  cash flows at beginning of period..............  $ 97,753    $126,666      $205,698
Changes resulting from:
  Net change in prices...........................    30,772      83,377       (89,014)
  Sales of oil and natural gas produced..........   (11,635)    (17,012)       (8,797)
  Accretion of discount..........................     9,776      12,667        15,428
                                                   --------    --------      --------
Standardized measure of discounted future net
  cash flows at end of period....................  $126,666    $205,698      $123,315
                                                   ========    ========      ========
</TABLE>
 
                                      F-34
<PAGE>   144
 
                               [NSAI LETTERHEAD]
                                January 13, 1998
 
Mr. William E. Gross
Denbury Management, Inc.
17304 Preston Road, Suite 200
Dallas, Texas 75252
 
Dear Mr. Gross:
 
     In accordance with your request, we have estimated the proved and probable
reserves and future revenue, as of December 31, 1997, to the Denbury Management,
Inc. (DMI) interest in certain oil and gas properties located in Louisiana,
Mississippi, Ohio, and Texas as listed in the accompanying tabulations. These
properties include those in the East Heidelberg and West Heidelberg Fields
acquired from Chevron U.S.A. Inc. (CUSA) effective December 31, 1997. For the
purposes of this report, all DMI properties except those acquired from CUSA are
referred to as the Corporate Properties. This report has been prepared using
constant prices and costs as set forth in this letter. For the proved reserves,
this report conforms to the guidelines of the Securities and Exchange Commission
(SEC). However, inasmuch as the SEC does not recognize probable reserves, the
sections of this report dealing with such reserves should not be used in filings
with the SEC.
 
     As presented in the accompanying summary projections, Tables I through V,
we estimate the net reserves and future net revenue to the DMI interest, as of
December 31, 1997, to be:
 
<TABLE>
<CAPTION>
                                         NET RESERVES              FUTURE NET REVENUE
                                    -----------------------   ----------------------------
                                       OIL          GAS                      PRESENT WORTH
             CATEGORY               (BARRELS)      (MCF)         TOTAL          AT 10%
             --------               ----------   ----------   ------------   -------------
<S>                                 <C>          <C>          <C>            <C>
Proved Developed
  Producing.......................  20,495,088   32,925,654   $240,589,400    $182,575,200
  Non-Producing...................  10,860,120   36,879,723    174,904,500      93,904,400
Proved Undeveloped................  20,663,028    7,385,636    187,968,700      84,849,000
                                    ----------   ----------   ------------    ------------
          Total Proved............  52,018,236   77,191,013   $603,462,600    $361,328,600
</TABLE>
 
     The oil reserves shown include crude oil, condensate, and gas plant
liquids. Oil volumes are expressed in barrels which are equivalent to 42 United
States gallons. Gas volumes are expressed in thousands of standard cubic feet
(MCF) at the contract temperature and pressure bases.
 
     As shown in the Table of Contents, this report is divided into sections for
Corporate Properties and Chevron Acquisition Properties. Each section includes
summary projections of reserves and revenue for each reserve category and by
reserve category for each state along with one-line summaries of reserves,
economics, and basic data by lease. Supplemental data summaries are also
included by reserve category for each state. For the purposes of this report,
the term "lease" refers to a single economic projection.
 
                            [NSAI LETTERHEAD FOOTER]
                                       A-1
<PAGE>   145
 
     The estimated reserves and future revenue shown in this report are for
proved developed producing, proved developed non-producing, proved undeveloped,
and probable reserves. No study was made to determine whether possible reserves
might be established for these properties. This report does not include any
value which could be attributed to interests in undeveloped acreage beyond those
tracts for which undeveloped reserves have been estimated.
 
     Future gross revenue to the DMI interest is prior to deducting state
production taxes and ad valorem taxes. Future net revenue is after deducting
these taxes, future capital costs, and operating expenses, but before
consideration of federal income taxes. In accordance with SEC guidelines, the
future net revenue has been discounted at an annual rate of 10 percent to
determine its "present worth." The present worth is shown to indicate the effect
of time on the value of money and should not be construed as being the fair
market value of the properties.
 
     For the purposes of this report, a field inspection of the properties has
not been performed nor has the mechanical operation or condition of the wells
and their related facilities been examined. We have not investigated possible
environmental liability related to the properties; therefore, our estimates do
not include any costs which may be incurred due to such possible liability.
Also, our estimates do not include any salvage value for the lease and well
equipment nor the cost of abandoning the properties.
 
     Oil prices used in this report are based on a December 1997 average Koch
West Texas Intermediate posted price of $16.18 per barrel, adjusted by lease for
gravity, transportation fees, and regional posted price differentials. The
natural gas liquids price used for Gibson Field, Louisiana, is $12.26 per
barrel. Gas prices used in this report are based on a December 1997 NYMEX Henry
Hub Natural Gas Contract settlement price of $2.58 per MMBTU, adjusted by lease
for transportation fees, BTU content, and regional price differentials. Oil,
natural gas liquids, and gas prices are held constant in accordance with SEC
guidelines.
 
     Lease and well operating costs are based on operating expense records of
DMI and CUSA. For non-operated properties, these costs include the per-well
overhead expenses allowed under joint operating agreements along with costs
estimated to be incurred at and below the district and field levels. As
requested, lease and well operating costs for the operated properties include
only direct lease and field level costs. Headquarters general and administrative
overhead expenses of DMI are not included. Lease and well operating costs are
held constant in accordance with SEC guidelines. Capital costs are included as
required for workovers, new development wells, and production equipment.
 
     We have made no investigation of potential gas volume and value imbalances
which may have resulted from overdelivery or underdelivery to the DMI interest.
Therefore, our estimates of reserves and future revenue do not include
adjustments for the settlement of any such imbalances; our projections are based
on DMI receiving its net revenue interest share of estimated future gross gas
production.
 
     The reserves included in this report are estimates only and should not be
construed as exact quantities. They may or may not be recovered; if recovered,
the revenues therefrom and the costs related thereto could be more or less than
the estimated amounts. A substantial portion of these reserves are for
behind-pipe zones, undeveloped locations, and producing wells that lack
sufficient production history upon which performance-related estimates of
reserves can be based. Therefore, these reserves are based on estimates of
reservoir volumes and recovery efficiencies along with analogies to similar
production. As such reserve estimates are usually subject to greater revision
than those based on substantial production and pressure data, it may be
necessary to revise these estimates up or down in the future as additional
performance data become available. The sales rates, prices received for the
reserves, and costs incurred in recovering such reserves may vary from
assumptions included in this report due to governmental policies and
uncertainties of supply and demand. Also, estimates of reserves may increase or
decrease as a result of future operations.
 
     In evaluating the information at our disposal concerning this report, we
have excluded from our consideration all matters as to which legal or
accounting, rather than engineering and geological, interpretation may be
controlling. As in all aspects of oil and gas evaluation, there are
uncertainties inherent in the interpretation of engineering and geological data;
therefore, our conclusions necessarily represent only informed professional
judgments.
 
                                       A-2
<PAGE>   146
 
     The titles to the properties have not been examined by Netherland, Sewell &
Associates, Inc., nor has the actual degree or type of interest owned been
independently confirmed. The data used in our estimates were obtained from
Denbury Management, Inc.; Chevron U.S.A. Inc.; other interest owners; various
operators of the properties; and the nonconfidential files of Netherland, Sewell
& Associates, Inc. and were accepted as accurate. We are independent petroleum
engineers, geologists, and geophysicists; we do not own an interest in these
properties and are not employed on a contingent basis. Basic geologic and field
performance data together with our engineering work sheets are maintained on
file in our office.
 
                                            Very truly yours,
 
                                            /s/ FREDERIC D. SEWELL
 
DMA:EIB
 
                                       A-3
<PAGE>   147
 
                                    DMI LOGO
<PAGE>   148
 
                                    DRI LOGO
<PAGE>   149
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 
     The estimated expenses in connection with the issuance and distribution of
the securities being registered (other than underwriting discounts and
commissions) are set forth in the following itemized table:
 
   
<TABLE>
<S>                                                             <C>
SEC Registration Fee........................................    $ 66,375
NYSE Filing Fee.............................................       3,500
NASD Fee....................................................      23,000
The Toronto Stock Exchange Listing Fee......................      19,516
Luxembourg Stock Exchange Listing Fee.......................      35,728
Transfer Agent's Fees.......................................      10,000
Accounting Fees.............................................      75,000
Legal Fees and Expenses.....................................     125,000
Printing and Engraving Fees and Expenses....................     100,000
Trustee Fees................................................      17,500
Rating Agency Fee...........................................     101,250
Miscellaneous...............................................      23,131
                                                                --------
          Total.............................................    $600,000
                                                                ========
</TABLE>
    
 
- ---------------
 
* To be completed by amendment
 
ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
  Canada
 
     Section 124(1) of the Canada Business Corporations Act ("CBCA") provides
that, except in respect of an action by or on behalf of a corporation or body
corporate to procure a judgment in its favor, a corporation may indemnify a
director or officer of the corporation, a former director or officer of the
corporation or a person who acts or acted at the corporation's request as a
director or officer of a body corporate of which the corporation is or was a
shareholder or creditor, and his heirs and legal representatives, against all
costs, charges, and expenses, including an amount paid to settle an action or
satisfy a judgment, reasonably incurred by him in respect of any civil, criminal
or administrative action or proceeding to which he is made a party by reason of
being or having been a director or officer of such corporation or body
corporate, if:
 
          (a) he acted honestly and in good faith with a view to the best
     interests of the corporation; and
 
          (b) in a case of a criminal or administrative action or proceeding
     that is enforced by a monetary penalty, he had reasonable grounds for
     believing that his conduct was lawful.
 
     Section 124(2) of the CBCA provides that even if such a person is named in
an action by or on behalf of the corporation or body corporate to procure a
judgment in its favor, a corporation may indemnify such a person with court
approval if such person meets the standards set forth in Section 124(1).
Additionally, a person named in Section 124(1) is entitled to indemnity from the
corporation if the person seeking indemnity:
 
          (a) was substantially successful on the merits in his defense of the
     action or proceeding; and
 
          (b) fulfills the conditions set forth above.
 
     Section 5.02 of DRI's Bylaws contains the same standards set forth in
Section 124(1), but makes indemnification in such circumstances mandatory by
DRI.
 
                                      II-1
<PAGE>   150
 
  Texas
 
     DMI has authority under Articles 2.02(A)(16) and 2.02-1 of the Texas
Business Corporation Act (the "TBCA") to indemnify its directors and officers to
the extent provided for in such statute. Section 3.06 of DMI's Bylaws provides
that the board of directors of DMI may authorize DMI to pay expenses incurred
by, so as to satisfy a judgment or fine rendered or levied against, present or
former directors, officers or employees of DMI as provided by Article
2.02(A)(16) of the TBCA.
 
     The TBCA provides in part that a corporation may indemnify a director or
officer or other person who was, is, or is threatened to be made a named
defendant or respondent in a proceeding because the person is or was a director,
officer, employee or agent of the corporation, if it is determined that (i) such
person conducted himself in good faith; (ii) reasonably believed, in the case of
conduct in his official capacity as a director or officer of the corporation,
that his conduct was in the corporation's best interest, and, in all other
cases, that his conduct was not opposed to the corporation's best interests; and
(iii) in the case of any criminal proceeding, had no reasonable cause to believe
that his conduct was unlawful.
 
     A corporation may indemnify a person under the TBCA against judgments,
penalties (including excise and similar taxes), fines, settlements, and
reasonable expenses actually incurred by the person in connection with the
proceeding. If the person is found liable to the corporation or is found liable
on the basis that personal benefit was improperly received by the person, the
indemnification is limited to reasonable expenses actually incurred by the
person in connection with the proceeding, and shall not be made in respect of
any proceeding in which the person shall have been found liable for willful or
intentional misconduct in the performance of his duty to the corporation.
 
     A corporation may also pay or reimburse expenses incurred by a person in
connection with his appearance as a witness or other participation in a
proceeding at a time when he is not a named defendant or respondent in the
proceeding.
 
     In addition to the above provisions, both DRI and DMI have also entered
into an indemnity agreement with their officers and directors, which, subject to
the CBCA and TBCA, respectively, sets forth the procedures by which a person may
seek indemnity and clarifies the situations in which a person may be entitled to
indemnity by DRI or DMI, both.
 
     Effective in August 1997, the Company modified the directors and officers
insurance covering each of its officers and directors. The insurance provides up
to $15 million of coverage for the officers and directors with deductibles
ranging from zero to $350,000, depending on the type of claim, and $15 million
of coverage for the Company. The Company has paid for 100% of the cost of this
insurance.
 
ITEM 16. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
 
     (a) Exhibits.
 
   
<TABLE>
<CAPTION>
      EXHIBIT NO.                           DESCRIPTION OF EXHIBIT
      -----------                           ----------------------
<C>                      <S>
          1(a)**         -- Form of Underwriting Agreement relating to Equity
                            Offering.
          1(b)**         -- Form of Underwriting Agreement relating to Debt Offering.
          3(a)*          -- Articles of Continuance of Denbury Resources Inc., as
                            amended (incorporated by reference as Exhibits 3(a),
                            3(b), 3(c), 3(d) of DRI's Registration Statement on Form
                            F-1 dated August 25, 1995, Exhibit 4(e) of DRI's
                            Registration Statement on Form S-8 dated February 2, 1996
                            and Exhibit 3(a) of the Pre-effective Amendment No. 2 of
                            DRI's Registration Statement on Form S-1 dated October
                            22, 1996).
</TABLE>
    
 
                                      II-2
<PAGE>   151
   
<TABLE>
<CAPTION>
      EXHIBIT NO.                           DESCRIPTION OF EXHIBIT
      -----------                           ----------------------
<C>                      <S>
          3(b)*          -- General By-Law No. 1: A By-Law Relating Generally to the
                            Conduct of the Affairs of Denbury Resources Inc., as
                            amended (incorporated by reference as Exhibit 3(e) of
                            DRI's Registration Statement on Form F-1 dated August 25,
                            1995 and Exhibit 4(d) of the Registrant's Registration
                            Statement on Form S-8 dated February 2, 1996).
          3(c)**         -- Restated Articles of Incorporation of Denbury Management,
                            Inc.
          3(d)**         -- Bylaws of Denbury Management, Inc.
          4(a)           -- See Exhibits 3(a), 3(b), 3(c) and 3(d) for provisions of
                            the Articles of Continuance and General By-Law No. 1 of
                            DRI defining the rights of the holders of Common Shares.
          4(b)**         -- Indenture dated as of             , 1998, between DMI and
                            Chase Bank of Texas, National Association, as trustee.
          5(a)**         -- Opinion of Burnet, Duckworth & Palmer.
          5(b)**         -- Opinion of Jenkens & Gilchrist, a Professional
                            Corporation.
         10(a)           -- Form of First Restated Credit Agreement, by and among
                            DMI, as borrower, DRI as guarantor, NationsBank of Texas,
                            N.A., as administrative agent, Nationsbanc Montgomery
                            Securities LLC, as syndication agent and arranger and the
                            financial institutions listed on Schedule I thereto, as
                            banks, to be executed on December 29, 1997.
         12              -- Statement of Ratio of Earnings to Fixed Charges.
         23(a)           -- Consent of Deloitte & Touche.
         23(b)           -- Consent of Price Waterhouse LLP.
         23(c)           -- Consent of Netherland, Sewell and Associates.
         23(d)**         -- Consent of Burnet, Duckworth & Palmer (contained in its
                            opinion filed as Exhibit 5(a).
         23(e)**         -- Consent of Jenkens & Gilchrist, a Professional
                            Corporation (contained in its opinion filed as Exhibit
                            5(b)).
         24(a)*          -- Power of Attorney (contained on the signature page of
                            this Registration Statement).
         25.1            -- Statement of Eligibility on Form T-1 of Chase Bank of
                            Texas, National Association, as Trustee.
</TABLE>
    
 
- ---------------
 
   
 * Previously filed.
    
 
** To be filed by amendment.
 
     (b) Financial Statements and Schedules.
 
<TABLE>
<CAPTION>
                                                                  PAGE
                                                              ------------
<S>                                                           <C>
Independent Auditors' Report................................  II-7
Schedule I -- Condensed Financial Information of
  Registrant................................................  II-8 thru 11
</TABLE>
 
ITEM 17. UNDERTAKINGS
 
     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of the
Registrants pursuant to the provisions described in Item 15 above, or otherwise,
the Registrants has been advised that in the opinion of the Securities and
Exchange Commission such indemnification is against public policy as expressed
in the Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
Registrants of expenses incurred or paid by a director, officer or controlling
person of the Registrants in the
 
                                      II-3
<PAGE>   152
 
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrants will, unless in the opinion of their counsel the
matter has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Act and will be governed by the final
adjudication of such issue.
 
     The undersigned Registrants hereby undertake:
 
          (1) For purposes of determining any liability under the Securities Act
     of 1933, the information omitted from the form of prospectus filed as part
     of this registration statement in reliance upon Rule 430A and contained in
     a form of prospectus filed by the registrant pursuant to Rule 424(b)(1) or
     (4) or 497(h) under the Securities Act shall be deemed to be part of this
     registration statement as of the time it was declared effective.
 
          (2) For the purpose of determining any liability under the Securities
     Act of 1933, each post-effective amendment that contains a form of
     prospectus shall be deemed to be a new registration statement relating to
     the securities offered therein, and the offering of such securities at that
     time shall be deemed to be the initial bona fide offer thereof.
 
                                      II-4
<PAGE>   153
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act of 1933, as amended, the
Registrants certified that they have reasonable grounds to believe that they
meet all of the requirements for filing on Form S-3 and have duly caused this
Registration Statement No. 333-43207 to be signed on their behalf by the
undersigned, thereunto duly authorized, in the City of Dallas, State of Texas,
on January 21, 1998.
    
 
                                            DENBURY RESOURCES INC.
 
                                            By:      /s/ PHIL RYKHOEK
 
                                              ----------------------------------
                                              Phil Rykhoek
                                              Chief Financial Officer
 
                                            DENBURY MANAGEMENT, INC.
                                            By:      /s/ PHIL RYKHOEK
 
                                              ----------------------------------
                                              Phil Rykhoek
                                              Chief Financial Officer
 
     Each person whose signature appears below as a signatory to this
Registration Statement constitutes and appoints Gareth Roberts and Phil Rykhoek,
or either one of them, his true and lawful attorney-in-fact and agent with full
power of substitution and resubstitution, for him and in his name, place and
stead, in any and all capacities, to sign any and all amendments to this
Registration Statement, and to file the same, with all exhibits thereto, and all
other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorney-in-fact and agent, full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in and about the premises, as fully to all intents and purposes as he
might or could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agent or his substitute may lawfully do or cause to be done
by virtue hereof.
 
     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities and on the dates indicated, in multiple counterparts with the effect
of one original.
 
   
<TABLE>
<CAPTION>
                     SIGNATURES                                   TITLE                    DATE
                     ----------                                   -----                    ----
<C>                                                    <S>                           <C>
 
                  GARETH ROBERTS *                     President, Chief Executive    January 21, 1998
- -----------------------------------------------------    Officer and Director of
                   Gareth Roberts                        DRI (Principal Executive
                                                         Officer)
 
                  /s/ PHIL RYKHOEK                     Chief Financial Officer,      January 21, 1998
- -----------------------------------------------------    Secretary and
                    Phil Rykhoek                         Authorized Representative
                                                         of DRI (Principal
                                                         Financial Officer)
 
                  BOBBY J. BISHOP *                    Controller and Chief          January 21, 1998
- -----------------------------------------------------    Accounting Officer of DRI
                   Bobby J. Bishop                       (Principal Accounting
                                                         Officer)
 
                 RONALD G. GREENE *                    Chairman of the Board and     January 21, 1998
- -----------------------------------------------------    Director of DRI
                  Ronald G. Greene
 
                 WIELAND WETTSTEIN *                   Director of DRI               January 21, 1998
- -----------------------------------------------------
                  Wieland Wettstein
</TABLE>
    
 
                                      II-5
<PAGE>   154
   
<TABLE>
<CAPTION>
                     SIGNATURES                                   TITLE                    DATE
                     ----------                                   -----                    ----
<C>                                                    <S>                           <C>
 
                  WILMOT MATTHEWS *                    Director of DRI               January 21, 1998
- -----------------------------------------------------
                   Wilmot Matthews
 
                  GARETH ROBERTS *                     President, Chief Executive    January 21, 1998
- -----------------------------------------------------    Officer and Director of
                   Gareth Roberts                        DMI (Principal Executive
                                                         Officer)
 
                  /s/ PHIL RYKHOEK                     Chief Financial Officer and   January 21, 1998
- -----------------------------------------------------    Secretary and
                    Phil Rykhoek                         Director of DMI
                                                         (Principal Financial
                                                         Officer)
 
                  BOBBY J. BISHOP *                    Controller and Chief          January 21, 1998
- -----------------------------------------------------    Accounting Officer of DMI
                   Bobby J. Bishop                       (Principal Accounting
                                                         Officer)
 
                   MATTHEW DESO *                      Vice President, Exploration   January 21, 1998
- -----------------------------------------------------    and Director of DMI
                    Matthew Deso
 
                   MARK WORTHEY *                      Vice President, Operations    January 21, 1998
- -----------------------------------------------------    and Director of DMI
                    Mark Worthey
 
                By: /s/ PHIL RYKHOEK
  -------------------------------------------------
                    Phil Rykhoek
         Attorney-in-Fact pursuant to power
          of attorney contained in original
        filing of the Registration Statement.
</TABLE>
    
 
                                      II-6
<PAGE>   155
 
                          INDEPENDENT AUDITORS' REPORT
 
To the Shareholders of Denbury Resources Inc.
 
     We have audited the consolidated financial statements of Denbury Resources
Inc. as at December 31, 1995 and 1996 and for each of the three years in the
period ended December 31, 1996 and have issued our report thereon dated February
21, 1997, such consolidated financial statements and report are included
elsewhere in this registration statement on Form S-3. Our audits also included
the Schedule I -- Condensed Financial Information of Denbury Resources Inc.
listed in Item 16. This financial statement schedule is the responsibility of
the Company's management. Our responsibility is to express an opinion based on
our audits.
 
     We conducted our audits in accordance with the auditing standards generally
accepted in Canada and the United States of America. Those standards require
that we plan and perform the audit to obtain reasonable assurance whether the
financial statements are free of material misstatements. An audit also includes
examining, on a test basis, evidence supporting the amounts and disclosures in
the financial statements. An audit also includes assessing the accounting
principles used and significant estimates made by management, as well as
evaluating the overall financial statement presentation.
 
     In our opinion, such financial statement schedule, when considered in
relation to the basic consolidated financial statements taken as a whole,
present fairly in all material respects the information set forth therein.
 
Deloitte & Touche
 
Chartered Accountants
 
Calgary, Alberta
February 21, 1997
 
                                      II-7
<PAGE>   156
 
          SCHEDULE I -- CONDENSED FINANCIAL INFORMATION OF REGISTRANT
 
                             DENBURY RESOURCES INC.
 
                         UNCONSOLIDATED BALANCE SHEETS
                     (AMOUNTS IN THOUSANDS OF U.S. DOLLARS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                                              -------------------
                                                               1995        1996
                                                              -------    --------
<S>                                                           <C>        <C>
Current assets
  Cash and cash equivalents.................................  $     8    $    274
  Trade and other receivables...............................        7           6
                                                              -------    --------
          Total current assets..............................       15         280
                                                              -------    --------
Investment in subsidiaries (equity method)..................   70,130     140,763
Loan receivable from subsidiary.............................    1,563       1,558
Other assets................................................       28           2
                                                              -------    --------
          Total assets......................................  $71,736    $142,603
                                                              =======    ========
LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities
  Accounts payable and accrued liabilities..................  $     9    $     99
Long-term debt..............................................    3,226          --
                                                              -------    --------
                                                                3,235          99
                                                              -------    --------
Convertible First Preferred Shares, Series A
  1,500,000 shares authorized; issued and outstanding at
     December 31, 1995......................................   15,000          --
                                                              -------    --------
Shareholders' equity
  Common shares, no par value
     unlimited shares authorized;
     outstanding -- 20,055,757 shares at December 31, 1996
     and 11,428,809 shares at December 31, 1995.............   50,064     130,323
  Retained earnings.........................................    3,437      12,181
                                                              -------    --------
          Total shareholders' equity........................   53,501     142,504
                                                              -------    --------
          Total liabilities and shareholders' equity........  $71,736    $142,603
                                                              =======    ========
</TABLE>
 
                       See Notes to Financial Statements.
 
                                      II-8
<PAGE>   157
 
          SCHEDULE I -- CONDENSED FINANCIAL INFORMATION OF REGISTRANT
 
                             DENBURY RESOURCES INC.
 
                      UNCONSOLIDATED STATEMENTS OF INCOME
                (AMOUNTS IN THOUSANDS EXCEPT PER SHARE AMOUNTS)
                                 (U.S. DOLLARS)
 
<TABLE>
<CAPTION>
                                                               YEAR ENDED DECEMBER 31,
                                                              -------------------------
                                                               1994     1995     1996
                                                              ------   ------   -------
<S>                                                           <C>      <C>      <C>
Revenues
  Oil, natural gas and related product sales................  $   --   $   --   $    --
  Interest income...........................................       1      460       179
                                                              ------   ------   -------
          Total revenues....................................       1      460       179
                                                              ------   ------   -------
Expenses
  General and administrative................................     149      178       161
  Interest..................................................      76      282       304
  Imputed preferred dividends...............................      --       --     1,281
  Depletion and depreciation................................       2       --        --
                                                              ------   ------   -------
          Total expenses....................................     227      460     1,746
                                                              ------   ------   -------
Income before the following.................................    (226)      --    (1,567)
  Equity in net earnings of subsidiaries....................   1,389      714    10,311
                                                              ------   ------   -------
Income before income taxes..................................   1,163      714     8,744
Provision for federal income taxes..........................      --       --        --
                                                              ------   ------   -------
          Net income........................................  $1,163   $  714   $ 8,744
                                                              ======   ======   =======
Net income per common share
  Primary...................................................  $ 0.19   $ 0.10   $  0.67
  Fully diluted.............................................    0.19     0.10      0.62
                                                              ======   ======   =======
Average number of common shares outstanding.................   6,240    6,870    13,104
                                                              ======   ======   =======
</TABLE>
 
                       See Notes to Financial Statements
 
                                      II-9
<PAGE>   158
 
                             DENBURY RESOURCES INC.
 
                    UNCONSOLIDATED STATEMENTS OF CASH FLOWS
                     (AMOUNTS IN THOUSANDS OF U.S. DOLLARS)
 
<TABLE>
<CAPTION>
                                                                  YEAR ENDED DECEMBER 31,
                                                              -------------------------------
                                                               1994        1995        1996
                                                              -------    --------    --------
<S>                                                           <C>        <C>         <C>
Cash flow from operating activities:
  Net income................................................  $ 1,163    $    714    $  8,744
  Adjustments needed to reconcile to net cash flow provided
     by operations:
     Depreciation, depletion and amortization...............        2          --          --
     Imputed preferred dividend.............................       --          --       1,281
     Other..................................................        9          17         114
     Equity on net earnings of subsidiaries.................   (1,389)       (714)    (10,311)
                                                              -------    --------    --------
                                                                 (215)         17        (172)
  Changes in working capital items relating to operations:
     Trade and other receivables............................        8          (4)         --
     Accounts payable and accrued liabilities...............      (77)        (12)         90
                                                              -------    --------    --------
Net cash flow provided by operations........................     (284)          1         (82)
                                                              -------    --------    --------
Cash flow from investing activities:
     Investments in subsidiaries............................   (1,518)    (43,569)    (60,316)
     Net purchases of other assets..........................      (15)          7          --
                                                              -------    --------    --------
Net cash used for investing activities......................   (1,533)    (43,562)    (60,316)
                                                              -------    --------    --------
Cash flow from financing activities:
     Issuance of subordinated debt..........................    1,451       1,772          --
     Issuance of common stock...............................      367      26,825      60,664
     Issuance of preferred stock............................       --      15,000          --
     Costs of debt financing................................       --         (35)         --
                                                              -------    --------    --------
Net cash provided by financing activities...................    1,818      43,562      60,664
                                                              -------    --------    --------
Net increase (decrease) in cash and cash equivalents........        1           1         266
Cash and cash equivalents at beginning of year..............        6           7           8
                                                              -------    --------    --------
Cash and cash equivalents at end of year....................  $     7    $      8    $    274
                                                              =======    ========    ========
Supplemental disclosure of cash flow information:
     Cash paid during the year for interest.................  $    76    $    282    $    277
</TABLE>
 
                                      II-10
<PAGE>   159
 
                             DENBURY RESOURCES INC.
 
         SCHEDULE I -- CONDENSED FINANCIAL INFORMATION OF REGISTRATION
 
                         NOTES TO FINANCIAL STATEMENTS
 
NOTE 1. ACCOUNTING POLICIES
 
     Consolidation -- The financial statements of Denbury Resources Inc. have
been prepared in accordance with Canadian generally accepted accounting
principles and reflect the investment in subsidiaries using the equity method.
 
     Income Taxes -- No provision for income taxes has been made in the
Statement of Income because the Company has losses for Canadian tax purposes.
 
NOTE 2. CONSOLIDATED FINANCIAL STATEMENTS
 
     Reference is made to the Consolidated Financial Statements and related
notes of Denbury Resources Inc. and Subsidiaries for additional information.
 
NOTE 3. DEBT AND GUARANTEES
 
     Information on the long-term debt of Denbury Resources Inc. is disclosed in
Note 3 to the Consolidated Financial Statements. Denbury Resources Inc. has
guaranteed the subsidiaries' bank credit line.
 
NOTE 4. DIVIDENDS RECEIVED
 
     Subsidiaries' of Denbury Resources Inc. do not make formal cash dividend
declarations and distributions to the parent and are currently restricted from
doing so under the subsidiaries bank loan agreement.
 
                                      II-11
<PAGE>   160
 
                                 EXHIBIT INDEX
 
   
<TABLE>
<CAPTION>
      EXHIBIT NO.                           DESCRIPTION OF EXHIBIT
      -----------                           ----------------------
<C>                      <S>
         10(a)           -- Form of First Restated Credit Agreement, by and among
                            DMI, as borrower, DRI as guarantor, NationsBank of Texas,
                            N.A., as administrative agent, Nationsbanc Montgomery
                            Securities LLC, as syndication agent and arranger and the
                            financial institutions listed on Schedule I thereto, as
                            banks, to be executed on December 29, 1997.
         12              -- Statement of Ratio of Earnings to Fixed Charges.
         23(a)           -- Consent of Deloitte & Touche.
         23(b)           -- Consent of Price Waterhouse LLP.
         23(c)           -- Consent of Netherland, Sewell and Associates.
         25.1            -- Statement of Eligibility on Form T-1 of Chase Bank of
                            Texas, National Association, as Trustee.
</TABLE>
    

<PAGE>   1





                        FIRST RESTATED CREDIT AGREEMENT

                                     among

                           DENBURY MANAGEMENT, INC.,
                                  as Borrower,

                            DENBURY RESOURCES, INC.
                                 as Guarantor,

                          NATIONSBANK OF TEXAS, N.A.,
                            as Administrative Agent,

                                      and

           The Financial Institutions Listed on Schedule 1.1 Hereto,
                                    as Banks


                                  $300,000,000



                                     dated

                               December 29, 1997
<PAGE>   2
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                                     Page
                                                                                                                     ----
<S>                                                                                                                    <C>
ARTICLE I TERMS DEFINED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

         SECTION 1.1.     Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
         SECTION 1.2.     Accounting Terms and Determinations . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
         SECTION 1.3.     Petroleum Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19

ARTICLE II THE CREDIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19

         SECTION 2.1.     Commitments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19
         SECTION 2.2.     Method of Borrowing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
         SECTION 2.3.     Method of Requesting Letters of Credit  . . . . . . . . . . . . . . . . . . . . . . . . . .  21
         SECTION 2.4.     Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
         SECTION 2.5.     Interest Rates; Payments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
         SECTION 2.6.     Mandatory Prepayments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
         SECTION 2.7.     Voluntary Prepayments.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
         SECTION 2.8.     Voluntary Reduction of Commitments  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
         SECTION 2.9.     Termination of Commitments; Final Maturity  . . . . . . . . . . . . . . . . . . . . . . . .  24
         SECTION 2.10.    Application of Payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
         SECTION 2.11.    Commitment Fee  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
         SECTION 2.12.    Agency and other Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25

ARTICLE III GENERAL PROVISIONS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25

         SECTION 3.1.     Delivery and Endorsement of Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25
         SECTION 3.2.     General Provisions as to Payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25

ARTICLE IV BORROWING BASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  26

         SECTION 4.1.     Borrowing Base and Conforming Borrowing Base. . . . . . . . . . . . . . . . . . . . . . . .  26
         SECTION 4.2.     Standards Applicable to Determination of Borrowing Base and Conforming Borrowing Base.  . .  26
         SECTION 4.3.     Bank Approval of Borrowing Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
         SECTION 4.4.     Redetermination Dates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
         SECTION 4.5.     Borrowing Base Deficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
         SECTION 4.6.     Initial Borrowing Base  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28

ARTICLE V COLLATERAL AND GUARANTEES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28

         SECTION 5.1.   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28
</TABLE>
<PAGE>   3
<TABLE>
<S>                                                                                                                    <C>
ARTICLE VI CONDITIONS PRECEDENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  29

         SECTION 6.1.     Conditions to Restatement and Initial Borrowing and 
                                  Participation in Letter of Credit Exposure  . . . . . . . . . . . . . . . . . . . .  29
         SECTION 6.2.     Conditions to Each Borrowing and each Letter of Credit  . . . . . . . . . . . . . . . . . .  32
         SECTION 6.3.     Materiality of Conditions.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33

ARTICLE VII REPRESENTATIONS AND WARRANTIES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33

         SECTION 7.1.     Corporate Existence and Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33
         SECTION 7.2.     Limited Liability Company Existence and Power (Marine)  . . . . . . . . . . . . . . . . . .  33
         SECTION 7.3.     Credit Party and Governmental Authorization; Contravention  . . . . . . . . . . . . . . . .  33
         SECTION 7.4.     Binding Effect  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33
         SECTION 7.5.     Financial Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  34
         SECTION 7.6.     Litigation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  34
         SECTION 7.7.     ERISA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  34
         SECTION 7.8.     Taxes and Filing of Tax Returns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
         SECTION 7.9.     Ownership of Properties Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
         SECTION 7.10.    Mineral   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
         SECTION 7.11.    Licenses, Permits, Etc  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         SECTION 7.12.    Compliance with Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         SECTION 7.13.    Full Disclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         SECTION 7.14.    Organizational Structure; Nature of Business  . . . . . . . . . . . . . . . . . . . . . . .  36
         SECTION 7.15.    Environmental Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         SECTION 7.16.    Burdensome Obligations  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         SECTION 7.17.    Fiscal Year . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         SECTION 7.18.    No Default  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         SECTION 7.19.    Government Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         SECTION 7.20.    Insider . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         SECTION 7.21.    Gas Balancing Agreements and Advance Payment Contracts  . . . . . . . . . . . . . . . . . .  38
         SECTION 7.22.    Chevron Acquisition Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38

ARTICLE VIII AFFIRMATIVE COVENANTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39

         SECTION 8.1.     Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         SECTION 8.2.     Business of Credit Parties  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
         SECTION 8.3.     Maintenance of Existence  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
         SECTION 8.4.     Title Data  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
         SECTION 8.5.     Right of Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
         SECTION 8.6.     Maintenance of Insurance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
         SECTION 8.7.     Payment of Taxes and Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
         SECTION 8.8.     Compliance with Laws and Documents  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         SECTION 8.9.     Operation of Properties and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         SECTION 8.10.    Environmental Law Compliance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         SECTION 8.11.    ERISA Reporting Requirements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         SECTION 8.12.    Additional Documents  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         SECTION 8.13.    Environmental Review  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
</TABLE>
<PAGE>   4
<TABLE>
<S>                                                                                                                    <C>
ARTICLE IX NEGATIVE COVENANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45

         SECTION 9.1.  Incurrence of Debt  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         SECTION 9.2.  Restricted Payments   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         SECTION 9.3.  Negative Pledge   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         SECTION 9.4.  Consolidations and Mergers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         SECTION 9.5.  Asset Dispositions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         SECTION 9.6.  Amendments to Organizational Documents  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         SECTION 9.7.  Use of  Proceeds  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         SECTION 9.8.  Investments   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         SECTION 9.9.  Transactions with Affiliates  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         SECTION 9.10.  ERISA.    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         SECTION 9.11.  Hedge Transactions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         SECTION 9.12.  Fiscal Year . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         SECTION 9.13.  Change in Business  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47

ARTICLE X FINANCIAL COVENANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47

         SECTION 10.1.  Current Ratio of Parent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         SECTION 10.2.  Minimum Consolidated Tangible Net Worth . . . . . . . . . . . . . . . . . . . . . . . . . . .  48
         SECTION 10.3.  Consolidated EBITDA to Consolidated Net Interest Expense  . . . . . . . . . . . . . . . . . .  48

ARTICLE XI DEFAULTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48

         SECTION 11.1.  Events of Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48

ARTICLE XII AGENTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50

         SECTION 12.1.  Appointment, Powers, and Immunities . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         SECTION 12.2.  Reliance by Agents  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         SECTION 12.3.  Defaults  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
         SECTION 12.4.  Rights as Bank  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
         SECTION 12.5.  Indemnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
         SECTION 12.6.  Non-Reliance on Agent and Other Banks . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
         SECTION 12.7.  Resignation of Agents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52

ARTICLE XIII CHANGE IN CIRCUMSTANCES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52

         SECTION 13.1.  Increased Cost and Reduced Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
         SECTION 13.2.  Limitation on Eurodollar Loans  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         SECTION 13.3.  Illegality  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         SECTION 13.4.  Treatment of Affected Loans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         SECTION 13.5.  Compensation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
         SECTION 13.6.  Taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
         SECTION 13.7.  Discretion of Banks as to Manner of Funding . . . . . . . . . . . . . . . . . . . . . . . . .  57
</TABLE>
<PAGE>   5
<TABLE>
         <S>                                                                                                           <C>
         ARTICLE XIV MISCELLANEOUS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57

         SECTION 14.1.  Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
         SECTION 14.2.  No Waivers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  58
         SECTION 14.3.  Expenses; Indemnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  58
         SECTION 14.4.  Right of Set-off; Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  59
         SECTION 14.5.  Amendments and Waivers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
         SECTION 14.6.  Survival  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
         SECTION 14.7.  Limitation on Interest  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
         SECTION 14.8.  Invalid Provisions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
         SECTION 14.9.  Waiver of Consumer Credit Laws  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
         SECTION 14.10.  Assignments and Participations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
         SECTION 14.11.  TEXAS LAW  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  63
         SECTION 14.12.  Consent to Jurisdiction; Waiver of Immunities  . . . . . . . . . . . . . . . . . . . . . . .  63
         SECTION 14.13.  Counterparts; Effectiveness  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  63
         SECTION 14.14.  No Third Party Beneficiaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  63
         SECTION 14.15.  COMPLETE AGREEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  64
         SECTION 14.16.  WAIVER OF JURY TRIAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  64
         SECTION 14.17.  Confidentiality  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  64
</TABLE>
<PAGE>   6
<TABLE>
<CAPTION>
                                   EXHIBITS
<S>        <C>
EXHIBIT A  FORM OF AMENDMENT TO MORTGAGES
EXHIBIT B  FORM OF GUARANTY
EXHIBIT C  FORM OF PROMISSORY NOTE
EXHIBIT D  FORM OF PARENT PLEDGE AGREEMENT
EXHIBIT E  FORM OF REQUEST FOR BORROWING
EXHIBIT F  FORM OF REQUEST FOR LETTER OF CREDIT
EXHIBIT G  FORM OF NOTICE OF CONTINUATION AND CONVERSION
EXHIBIT H  FORM OF CERTIFICATE OF OWNERSHIP INTERESTS
EXHIBIT I  FORM OF CERTIFICATE OF FINANCIAL OFFICER
EXHIBIT J  FORM OF ASSIGNMENT AND ASSUMPTION AGREEMENT
</TABLE>


<TABLE>
<CAPTION>
                                  SCHEDULES
<S>              <C>
SCHEDULE 1.1     FINANCIAL INSTITUTIONS
SCHEDULE 1.2     EXISTING MORTGAGES
SCHEDULE 7.6     LITIGATION
SCHEDULE 7.11    LICENSES, PERMITS, ETC.
SCHEDULE 7.14    JURISDICTIONS, ETC.
SCHEDULE 8.10    ENVIRONMENTAL DISCLOSURE
</TABLE>
<PAGE>   7
         THIS FIRST RESTATED CREDIT AGREEMENT (this "Agreement") is entered
into as of the 29th day of December, 1997, among DENBURY MANAGEMENT, INC., a
Texas corporation ("Borrower"), DENBURY RESOURCES, INC., a corporation
incorporated under the Canadian Business Corporations Act ("Parent"),
NATIONSBANK OF TEXAS, N.A., as Administrative Agent ("Agent"), and the
financial institutions listed on Schedule 1.1 hereto as Banks (individually a
"Bank" and collectively "Banks").

                              W I T N E S S E T H:

         WHEREAS, Borrower, Parent, NationsBank of Texas, N.A., as Agent,
NationsBank of Texas, N.A. (in its individual capacity and not as Agent)
("NationsBank"), Bankers Trust Company ("BT") and Internationale Nederlanden
(U.S.) Capital Corporation ("ING") are parties to that certain Credit Agreement
dated as of May 31, 1996 pursuant to which NationsBank, BT and ING have
extended credit to Borrower (as amended through the date hereof, the "Existing
Credit Agreement"); and

         WHEREAS, pursuant to instruments of even date herewith BT and ING have
assigned (the "Assignment") their interests under the Existing Credit Agreement
and the Loan Papers (as therein defined) to NationsBank and NationsBank has
assumed the obligations of BT and ING thereunder; and

         WHEREAS, NationsBank is the only Bank under the Existing Credit
Agreement; and

         WHEREAS, NationsBank, Borrower, Parent and Administrative Agent desire
to amend and restate the Existing Credit Agreement on the terms and conditions
set forth herein; and

         WHEREAS, NationsBanc Montgomery Securities, Inc. has been engaged to
act as Arranger and Syndication Agent for the credit facilities contemplated
hereby.

         NOW, THEREFORE, in consideration of the premises, the representations,
warranties, covenants and agreements contained herein, and other good and
valuable consideration, the receipt and adequacy of which are hereby
acknowledged, and subject to the satisfaction of each condition precedent set
forth in Section 6.1 hereof, Borrower, Parent, Administrative Agent and Banks
agree that the Existing Credit Agreement is amended and restated on the terms
and conditions set forth herein.


                                   ARTICLE I

                                 TERMS DEFINED

         SECTION 1.1.     Definitions.  The following terms, as used herein,
have the following meanings:

         "Adjusted Eurodollar Rate" means, for any Eurodollar Loan for any
Interest Period therefor, the rate per annum (rounded upwards, if necessary, to
the nearest 1/100 of 1%) determined by the Agent to be equal to the quotient
obtained by dividing (a) the Eurodollar





CREDIT AGREEMENT                                                PAGE 1
<PAGE>   8
Rate for such Eurodollar Loan for such Interest Period by (b) 1 minus the
Reserve Requirement for such Eurodollar Loan for such Interest Period.

         "Administrative Agent" means NationsBank of Texas, N.A. in its
capacity as Administrative Agent for Banks hereunder or any successor thereto.

         "Advance Payment Contract" means any contract whereby Borrower either
(a) receives or becomes entitled to receive (either directly or indirectly) any
payment (an "Advance Payment") to be applied toward payment of the purchase
price of hydrocarbons produced or to be produced from Mineral Interests owned
by Borrower and which Advance Payment is paid or to be paid in advance of
actual delivery of such production to or for the account of the purchaser
regardless of such production, or (b) grants an option or right of refusal to
the purchaser to take delivery of such production in lieu of payment, and, in
either of the foregoing instances, the Advance Payment is, or is to be, applied
as payment in full for such production when sold and delivered or is, or is to
be, applied as payment for a portion only of the purchase price thereof or of a
percentage or share of such production; provided that inclusion of the standard
"take or pay" provision in any gas sales or purchase contract or any other
similar contract shall not, in and of itself, constitute such contract as an
Advance Payment Contract for the purposes hereof.

         "Affiliate" means, as to any Person, any Subsidiary of such Person, or
any other Person which, directly or indirectly, controls, is controlled by, or
is under common control with, such Person and, with respect to any Credit
Party, means, any director or executive officer of such Credit Party and any
Person who holds ten percent (10%) or more of the voting stock of such Credit
Party.  For the purposes of this definition, "control" (including, with
correlative meanings, the terms "controlled by" and "under common control
with"), as used with respect to any Person, shall mean the possession, directly
or indirectly, of the power to direct or cause the direction of the management
and policies of such Person, whether through the ownership of voting securities
or partnership interests, or by contract or otherwise.

         "Agent" means any of Administrative Agent, Syndication Agent and
Arranger, and "Agents" means Administrative Agent, Syndication Agent and
Arranger collectively.

         "Agreement" means this First Restated Credit Agreement as the same may
hereafter be modified, amended or supplemented from time to time.

         "Amendment to Existing Mortgages" means an Amendment to Mortgages to
be entered into between Borrower and Agent, substantially in the form of
Exhibit A hereto, pursuant to which the Existing Mortgages shall be amended to
reflect the amendment and restatement of the Existing Credit Agreement pursuant
hereto.

         "Applicable Environmental Law" means any federal, state or local law,
common law, ordinance, regulation or policy, as well as order, decree, permit,
judgment or injunction issued, promulgated, approved, or entered thereunder,
relating to the environment, health and safety, or Hazardous Substances
(including, without limitation, the use, handling, transportation, production,
disposal, discharge or storage thereof) or to industrial hygiene or the
environmental conditions on, under, or about any real property owned, leased or
operated at any time by any





CREDIT AGREEMENT                                        PAGE 2
<PAGE>   9
Credit Party or any real property owned, leased or operated by any other party
including, without limitation, soil, groundwater, and indoor and ambient air
conditions.

         "Applicable Lending Office" means, for each Bank and for each Type of
Loan, the "Lending Office" of such Bank (or of an affiliate of such Bank)
designated for such Type of Loan on the signature pages hereof or such other
office of such Bank (or an affiliate of such Bank) as such Bank may from time
to time specify to the Agent and the Borrower by written notice in accordance
with the terms hereof as the office by which its Loans of such Type are to be
made and maintained.

         "Applicable Margin" means, on any date, with respect to each
Eurodollar Loan, an amount determined by reference to the ratio of Outstanding
Credit to the Conforming Borrowing Base on such date in accordance with the
table below:

<TABLE>
<CAPTION>
     Ratio of Outstanding               Applicable Margin for
Credit to Conforming Borrowing             Eurodollar Loans
             Base
   <S>                                  <C>
          < or = .50 to 1                        .875%

   >.50 to 1 and < or = .75 to 1                 1.125%

   > .75 to 1 and < or = 1.0 to 1                1.375%

          > 1.0 to 1                    Non Conforming Margin
</TABLE>

         "Approved Petroleum Engineer" means Netherland Sewell and Associates,
Inc. or any other reputable firm of independent petroleum engineers as shall be
selected by Borrower and approved by Required Banks, such approval not to be
unreasonably withheld.

         "Arranger" means NationsBanc Montgomery Securities, Inc. in its
capacity as Arranger for the credit facilities evidenced hereby pursuant to the
terms of a separate engagement letter among NationsBanc Montgomery Securities,
Inc., NationsBank of Texas, N.A. and Borrower.

         "Authorized Officer" means, as to any Person, its Chief Executive
Officer, its President, its Chief Financial Officer, any of its Vice
Presidents, its Treasurer or its corporate Secretary.

         "Availability" means, as of any date, the remainder of (a) the
Borrowing Base in effect on such date, minus (b) the Outstanding Credit on such
date.

         "Bank" means any financial institution reflected on Schedule 1.1
hereto as having a Commitment and its successors and permitted Assignees, and
"Banks" shall mean all Banks.

         "Base Rate" means, for any day, the rate per annum equal to the higher
of (a) the Federal Funds Rate for such day plus one-half of one percent (.5%)
and (b) the Prime Rate for such day.

         "Base Rate Loan" means the portion of the principal of the Revolving
Loan bearing interest with reference to the Base Rate.





CREDIT AGREEMENT                                        PAGE 3
<PAGE>   10
         "Borrower" means Denbury Management, Inc., a Texas corporation.

         "Borrowing" means any disbursement to Borrower under, or to satisfy
the obligations of any Credit Party under, any of the Loan Papers.  Any
Borrowing which will constitute a part of the Base Rate Loan is referred to
herein as a "Base Rate Borrowing," and any Borrowing which will constitute a
Eurodollar Loan, is referred to herein as a "Eurodollar Borrowing."

         "Borrowing Base" has the meaning set forth in Section 4.1 hereof.

         "Borrowing Base Deficiency" means, as of any date, the amount, if any,
by which the Outstanding Credit on such date exceeds the Borrowing Base in
effect on such date; provided, that, for purposes of determining the existence
and amount of any Borrowing Base Deficiency, Letter of Credit Exposure will not
be deemed to be outstanding to the extent it is secured by cash in the manner
contemplated by Section 2.1(b).

         "Borrowing Date" means the Eurodollar Business Day or the Domestic
Business Day, as the case may be, upon which the proceeds of any Borrowing are
made available to Borrower or to satisfy any obligation of any Credit Party.

         "Chevron" means Chevron USA, Inc.

         "Chevron Acquisition" means the proposed purchase by Borrower of the
Chevron Properties pursuant to the Chevron Acquisition Agreement.

         "Chevron Acquisition Agreement" means that certain Asset Sale
Agreement dated November 24, 1997, by and between Borrower and Chevron.

         "Chevron Acquisition Documents" means the Chevron Acquisition
Agreement and all agreements, assignments, deeds, conveyances, certificates and
other documents and instruments now or hereafter executed and delivered by or
between Borrower and Chevron pursuant to the Chevron Acquisition Agreement or
in connection with the Chevron Acquisition.

         "Chevron Properties" means the Mineral Interests to be acquired by
Borrower pursuant to the Chevron Acquisition Agreement.

         "Chevron Reserve Report" means, an engineering and economic analysis
of the Chevron Properties dated November 12, 1997, prepared as of January 1,
1998, by Borrower's in-house engineering staff.

         "Closing Date" means December 29, 1997.

         "Code" means the Internal Revenue Code of 1986, as amended.

         "Commitment" means, with respect to any Bank, the commitment of such
Bank to lend its Commitment Percentage of the Total Commitment to Borrower
pursuant to Section 2.1 hereof, as such Commitment may be terminated or reduced
from time to time in accordance with the provisions hereof.  On the Closing
Date, the amount of each Bank's Commitment is





CREDIT AGREEMENT                                        PAGE 4
<PAGE>   11
the amount set forth opposite such Bank's name on Schedule 1.1 hereto and at
all times after the Closing Date each Bank's Commitment shall be the amount set
forth on the Register (as defined in Section 14.10(b) hereof).

         "Commitment Fee Percentage" means, on any date, an amount determined
by reference to the ratio of Outstanding Credit to the Conforming Borrowing
Base on such date in accordance with the table below:

<TABLE>
<CAPTION>
     Ratio of Outstanding                          Commitment Fee
Credit to Conforming Borrowing                       Percentage  
             Base                                                
  <S>                                                  <C>       
          < or = .50 to 1                              .30%     
                                                                
  > .50 to 1 and < or = .75 to 1                       .35%     
                                                                
  > .75 to 1 and < or = 1.0 to 1                       .375%    
                                                                
          > 1.0 to 1                                   .45%     
</TABLE>

         "Commitment Percentage" means, with respect to each Bank, the
Commitment Percentage for such Bank set forth on Schedule 1.1 hereto.

         "Conforming Borrowing Base" has the meaning set forth in Section 4.1
hereof.

         "Consolidated Current Assets" means, for any Person at any time, the
current assets of such Person and its Consolidated Subsidiaries at such time,
plus, in the case of Parent, the Availability at such time.

         "Consolidated Current Liabilities" means, for any Person at any time,
the current liabilities of such Person and its Consolidated Subsidiaries at
such time, but, in the case of Parent, excluding the current portion (if any)
of the outstanding principal balance of the Revolving Loan.

         "Consolidated EBITDA" means, for any Person for any period: (a)
Consolidated Net Income of such Person for such period; plus, to the extent
deducted in the calculation of Consolidated Net Income, (b) the sum of (i)
income or franchise Taxes paid or accrued; (ii) Consolidated Net Interest
Expense; (iii) amortization, depletion and depreciation expense; and (iv) other
non-cash charges (excluding accruals for cash expenses made in the ordinary
course of business); less, to the extent included in the calculation of
Consolidated Net Income, (c) the sum of (i) the income of any Person (other
than wholly-owned Subsidiaries of such Person) unless such income is received
by such Person in a cash distribution; (ii) gains or losses from sales or other
dispositions of assets (other than Hydrocarbons produced in the normal course
of business); and (iii) extraordinary or non-recurring gains, but not net of
extraordinary or non- recurring "cash" losses.

         "Consolidated Net Income" means, for any Person for any period, the
net income (or loss) of such Person and its Consolidated Subsidiaries for such
period.





CREDIT AGREEMENT                                        PAGE 5
<PAGE>   12
         "Consolidated Net Interest Expense" means, for any Person for any
period, the remainder of the following for such Person and its Consolidated
Subsidiaries for such period: (a) interest expenses, minus (b) interest income.

         "Consolidated Subsidiary" or "Consolidated Subsidiaries" means, for
any Person, any Subsidiary or other entity the accounts of which would be
consolidated with those of such Person in its consolidated financial
statements.

         "Consolidated Tangible Net Worth" means, with respect to any Person at
any time, (a) the consolidated shareholder's equity of such Person at such
time, less (b) the consolidated Intangible Assets of such Person at such time.
For purposes of this definition, "Intangible Assets" means the amount (to the
extent reflected in determining such consolidated shareholder's equity) of all
unamortized debt discount and expense, unamortized deferred charges, goodwill,
patents, trademarks, service marks, trade names, copyrights, organization
expenses and other intangible items.

         "Continue", "Continuation", and "Continued" shall refer to the
continuation pursuant to Section 2.5 hereof of a Eurodollar Loan from one
Interest Period to the next Interest Period.

         "Convert", "Conversion", and "Converted" shall refer to a conversion
pursuant to Section 2.5 of all or a portion of one Type of Loan into another
Type of Loan.

         "Credit Parties" means, collectively, Borrower and Parent and "Credit
Party" means either Borrower or Parent.

         "Debt" means, for any Person at any time, without duplication, (a) all
obligations of such Person for borrowed money, (b) all obligations of such
Person evidenced by bonds, debentures, notes or other similar instruments, (c)
all other indebtedness (including capitalized lease obligations, other than
usual and customary oil and gas leases) of such Person on which interest
charges are customarily paid or accrued, (d) all Guarantees by such Person, (e)
the unfunded or unreimbursed portion of all letters of credit issued for the
account of such Person, (f) any amount owed by such Person representing the
deferred purchase price of property or services other than accounts payable
incurred in the ordinary course of business and in accordance with customary
trade terms and which are not more than one hundred twenty (120) days past the
invoice date, and (g) all liability of such Person as a general partner of a
partnership for obligations of such partnership of the nature described in (a)
through (f) preceding.

         "Default" means any condition or event which constitutes an Event of
Default or which with the giving of notice, lapse of time or both would, unless
cured or waived, become an Event of Default.

         "DES" means Denbury Energy Service, Inc., which is a wholly owned
Subsidiary of Borrower.

         "Distribution" by any Person, means (a) with respect to any stock
issued by such Person or any partnership, joint venture, limited liability
company, membership or other interest of





CREDIT AGREEMENT                                        PAGE 6
<PAGE>   13
such Person, the retirement, redemption, purchase, or other acquisition for
value of any such stock or partnership, joint venture, limited liability
company, membership or other interest, (b) the declaration or payment of any
dividend or other distribution on or with respect to any stock, partnership,
joint venture, limited liability company, membership or other interest of any
Person, and (c) any other payment by such Person with respect to such stock,
partnership, joint venture, limited liability company, membership or other
interest of such Person.

         "Domestic Business Day" means any day except a Saturday, Sunday or
other day on which national banks in Dallas, Texas, are authorized by Law to
close.

         "Domestic Lending Office" means, as to each Bank, its office located
at its address identified (a) on Schedule 1.1 hereto as its Domestic Lending
Office, (b) on the Register (as defined in Section 14.10(b)) as its Domestic
Lending Office, or (c) such other office as such Bank may hereafter designate
as its Domestic Lending Office by notice to Borrower and Administrative Agent.

         "Eligible Assignee" means (a) a Bank; (b) an affiliate of a Bank; and
(c) any other Person approved by the Agent and, unless an Event of Default has
occurred and is continuing at the time any assignment is effected in accordance
with Section 14.10, the Borrower,  such approval not to be unreasonably
withheld or delayed by the Borrower and such approval to be deemed given by the
Borrower if no objection is received by the assigning Bank and the Agent from
the Borrower within two Domestic Business Days after notice of such proposed
assignment has been provided by the assigning Bank to the Borrower; provided,
however, that neither the Borrower nor an affiliate of the Borrower shall
qualify as an Eligible Assignee.

         "Environmental Complaint" means any complaint, summons, citation,
notice, directive, order, claim, litigation, investigation, proceeding,
judgment, letter or other communication from any federal, state or municipal
authority or any other party against any Credit Party or any Subsidiary of any
Credit Party involving (a) a Hazardous Discharge from, onto or about any real
property owned, leased or operated at any time by any Credit Party, (b) a
Hazardous Discharge caused, in whole or in part, by any Credit Party or by any
Person acting on behalf of or at the instruction of any Credit Party, or (c)
any violation of any Applicable Environmental Law by any Credit Party.

         "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended.

         "ERISA Affiliate" means any corporation or trade or business under
common control with any Credit Party as determined under section 4001(a)(14) of
ERISA.

         "Eurodollar Business Day" means any Domestic Business Day on which
commercial banks are open for international business (including dealings in
dollar deposits) in the applicable Eurodollar interbank market.

         "Eurodollar Lending Office" means, as to each Bank, its office, branch
or affiliate located at its address identified (a) on Schedule 1.1 hereto as
its Eurodollar Lending Office, (b) on the Register (as defined in Section
14.10(b)) as  its Eurodollar Lending Office, or (c)





CREDIT AGREEMENT                                        PAGE 7
<PAGE>   14
such other office, branch or affiliate of such Bank as it may hereafter
designate as its Eurodollar Lending Office by notice to Borrower and
Administrative Agent.

         "Eurodollar Loans" means Loans that bear interest at rates based upon
the Adjusted Eurodollar Rate.

         "Eurodollar Rate" means, for any Eurodollar Loan for any Interest
Period therefor, the rate per annum (rounded upwards, if necessary, to the
nearest 1/100 of 1%) appearing on Telerate Page 3750 (or any successor page) as
the London interbank offered rate for deposits in Dollars at approximately
11:00 a.m. (London time) two Eurodollar Business Days prior to the first day of
such Interest Period for a term comparable to such Interest Period. If for any
reason such rate is not available, the term "Eurodollar Rate" shall mean, for
any Eurodollar Loan for any Interest Period therefor, the rate per annum
(rounded upwards, if necessary, to the nearest 1/100 of 1%) appearing on
Reuters Screen LIBO Page as the London interbank offered rate for deposits in
Dollars at approximately 11:00 a.m. (London time) two Eurodollar Business Days
prior to the first day of such Interest Period for a term comparable to such
Interest Period; provided, however, if more than one rate is specified on
Reuters Screen LIBO Page, the applicable rate shall be the arithmetic mean of
all such rates (rounded upwards, if necessary, to the nearest 1/100 of 1%).

         "Events of Default" has the meaning set forth in Section 11.1.

         "Exhibit" refers to an exhibit attached to this Agreement and
incorporated herein by reference, unless specifically provided otherwise.

         "Existing Credit Agreement" has the meaning assigned to such term in
the recitals hereto.

         "Existing Mortgages" means the mortgages, deeds of trust, security
agreements, assignments, pledges and other documents, instruments and
agreements described on Schedule 1.2 hereto, which establish Liens on certain
of Borrower's Mineral Interests to secure Borrower's obligations under the
Existing Credit Agreement.

         "Facility Guaranty" means a Guaranty substantially in the form of
Exhibit B hereto to be executed by Parent in favor of the Banks pursuant to
which Parent guarantees payment and performance in full of the Obligations.

         "Federal Funds Rate" means, for any day, the rate per annum (rounded
upwards, if necessary, to the nearest 1/100 of 1%) equal to the weighted
average of the rates on overnight Federal funds transactions with members of
the Federal Reserve System arranged by Federal funds brokers on such day, as
published by the Federal Reserve Bank of New York on the Domestic Business Day
next succeeding such day; provided that (a) if such day is not a Domestic
Business Day, the Federal Funds Rate for such day shall be such rate on such
transactions on the next preceding Domestic Business Day as so published on the
next succeeding Domestic Business Day, and (b) if no such rate is so published
on such next succeeding Domestic Business Day, the Federal Funds Rate for such
day shall be the average





CREDIT AGREEMENT                                        PAGE 8
<PAGE>   15
rate charged to the Administrative Agent (in its individual capacity) on such
day on such transactions as determined by the Administrative Agent.

         "Financial Officer" of any Person means its Chief Financial Officer;
provided, that if no Person serves in such capacity, "Financial Officer" shall
mean the highest ranking executive officer of such Person with responsibility
for accounting, financial reporting, cash management and similar functions.

         "Fiscal Quarter" means the three (3) month periods ending on March 31,
June 30, September 30 and December 31 of each Fiscal Year.

         "Fiscal Year" means a twelve (12) month period ending December 31.

         "GAAP" means those generally accepted accounting principles and
practices which are recognized as such in Canada and which are consistently
applied for all periods after the date hereof so as to properly reflect the
financial condition, and the results of operations and changes in financial
position, of Parent and its Consolidated Subsidiaries, except that any
accounting principle or practice required to be changed in order to continue as
a generally accepted accounting principle or practice in Canada may be so
changed.

         "Gas Balancing Agreement" means any agreement or arrangement whereby
any Credit Party, or any other party having an interest in any Hydrocarbons to
be produced from Mineral Interests in which any Credit Party owns an interest,
has a right to take more than its proportionate share of production therefrom.

         "Governmental Authority" means any court or governmental department,
commission, board, bureau, agency, or instrumentality of any nation or of any
province, state, commonwealth, nation, territory, possession, county, parish,
or municipality, whether now or hereafter constituted or existing.

         "Guarantee" by any Person means any obligation, contingent or
otherwise, of such Person directly or indirectly guaranteeing any Debt or other
obligation of any other Person and, without limiting the generality of the
foregoing, any obligation, direct or indirect, contingent or otherwise, of such
Person (a) to purchase or pay (or advance or supply funds for the purchase or
payment of) such Debt or other obligation (whether arising by virtue of
partnership arrangements, by agreement to keep-well, to purchase assets, goods,
securities or services, to take-or-pay, or to maintain financial statement
conditions, by "comfort letter" or other similar undertaking of support or
otherwise) or (b) entered into for the purpose of assuring in any other manner
the obligee of such Debt or other obligation of the payment thereof or to
protect such obligee against loss in respect thereof (in whole or in part),
provided that the term Guarantee shall not include endorsements for collection
or deposit in the ordinary course of business.

         "Hazardous Discharge" means any releasing, spilling, leaking, pumping,
pouring, emitting, emptying, discharging, injecting, escaping, leaching,
disposing or dumping of any Hazardous Substance from or onto any real property
owned, leased or operated at any time by any Credit Party or any real property
owned, leased or operated by any other party.





CREDIT AGREEMENT                                        PAGE 9
<PAGE>   16
         "Hazardous Substance" means any pollutant, toxic substance, hazardous
waste, compound, element or chemical that is defined as hazardous, toxic,
noxious, dangerous or infectious pursuant to any Applicable Environmental Law
or which is otherwise regulated by any Applicable Environmental Law.

         "Hedge Transaction" means any commodity, interest rate, currency or
other swap, option, collar, futures contract or other contract pursuant to
which a Person hedges risks related to commodity prices, interest rates,
currency exchange rates, securities prices or financial  market conditions.
Hedge Transactions expressly include Oil and Gas Hedge Transactions.

         "Hydrocarbons" means oil, gas, casinghead gas, drip gasolines, natural
gasoline, condensate, distillate, and all other liquid and gaseous hydrocarbons
produced or to be produced in conjunction therewith, and all products, by-
products and all other substances derived therefrom or the processing thereof,
and all other minerals and substances, including, but not limited to, sulphur,
lignite, coal, uranium, thorium, iron, geothermal steam, water, carbon dioxide,
helium, and any and all other minerals, ores, or substances of value, and the
products and proceeds therefrom, including, without limitation, all gas
resulting from the in-situ combustion of coal or lignite.

         "Immaterial Title Deficiencies" means, with respect to specified
Proved Mineral Interests, defects or clouds on title, discrepancies in reported
net revenue and working interest ownership percentages and other Liens,
defects, discrepancies and similar matters which do not, individually or in the
aggregate, affect Proved Mineral Interests with a Recognized Value greater than
five percent (5%) of the Recognized Value of all of such specified Proved
Mineral Interests.

         "Initial Reserve Report" means an engineering and economic analysis of
Borrower's Mineral Interests (excluding the Chevron Properties) dated June 30,
1997, prepared as of July 30, 1997, by Borrower's in house engineering staff.

         "Interest Period" means, with respect to each Eurodollar Borrowing and
each Continuation of Eurodollar Loans and each Conversion of all or part of the
Base Rate Loan to Eurodollar Loans, the period commencing on the date of such
Borrowing, Continuation or Conversion and ending one (1), two (2), three (3) or
six (6), and, if available to all Banks, nine (9) or twelve (12) months
thereafter, as Borrower may elect in the applicable Request for Borrowing or
Notice of Continuation or Conversion; provided that:

                 (a)      any Interest Period which would otherwise end on a
                 day which is not a Eurodollar Business Day shall be extended
                 to the next succeeding Eurodollar Business Day unless such
                 Eurodollar Business Day falls in another calendar month, in
                 which case such Interest Period shall end on the next
                 preceding Eurodollar Business Day;

                 (b)      any Interest Period which begins on the last
                 Eurodollar Business Day of a calendar month (or on a day for
                 which there is no numerically corresponding day in the
                 calendar month at the end of such Interest Period) shall,
                 subject to clause (c) below, end on the last Eurodollar
                 Business Day of a calendar month;





CREDIT AGREEMENT                                        PAGE 10
<PAGE>   17
                 (c)      if any Interest Period includes a date on which any
                 payment of principal of the Eurodollar Loans which are the
                 subject of such Borrowing, Continuation or Conversion is
                 required to be made hereunder, but does not end on such date,
                 then (i) the principal amount of such Eurodollar Loans
                 required to be repaid on such date shall have an Interest
                 Period ending on such date, and (ii) the remainder of each
                 such Eurodollar Loans shall have an Interest Period determined
                 as set forth above; and

                 (d)      no Interest Period shall extend past the Termination
                 Date.

         "Investment" means, with respect to any Person, any loan, advance,
extension of credit, capital contribution to, investment in or purchase of the
stock or other securities of, or interests in, any other Person; provided, that
"Investment" shall not include current customer and trade accounts which are
payable in accordance with customary trade terms.

         "Laws" means all applicable statutes, laws, ordinances, regulations,
orders, writs, injunctions, or decrees of any state, commonwealth, nation,
territory, possession, county, township, parish, municipality or Governmental
Authority.

         "Letter of Credit Exposure" of any Bank means such Bank's aggregate
participation in the unfunded portion and the funded but unreimbursed portion
of Letters of Credit outstanding at any time.

         "Letter of Credit Fee" means, with respect to any Letter of Credit
issued hereunder, a fee in an amount equal to the greater of (a) $500, or (b) a
percentage of the stated amount of such Letter of Credit (calculated on a per
annum basis based on the stated term of such Letter of Credit) determined by
reference to the ratio of Outstanding Credit to the Conforming Borrowing Base
in effect on the date such Letter of Credit is issued in accordance with the
table below:

<TABLE>
<CAPTION>
         Ratio of Outstanding                Per Annum Letter of
    Credit to Conforming Borrowing                Credit Fee
                 Base
      <S>                                   <C>
              < or = .50 to 1                             .875%

      > .50 to 1 and < or = .75 to 1                     1.125%

      > .75 to 1 and < or = 1.0 to 1                     1.375%

              > 1.0 to 1                     Non Conforming Margin
</TABLE>

         "Letter of Credit Fronting Fee" means, with respect to any Letter of
Credit issued hereunder with a stated amount of $1,000,000 or greater, a fee
equal to one tenth of one percent (.10%) of the stated amount of such Letter of
Credit.

         "Letters of Credit" means letters of credit issued for the account of
Borrower pursuant to Section 2.1(b).





CREDIT AGREEMENT                                        PAGE 11
<PAGE>   18
         "Lien" means, with respect to any asset, any mortgage, lien, pledge,
charge, security interest, financing statement or encumbrance of any kind in
respect of such asset.  For the purposes of this Agreement, the Credit Parties
shall be deemed to own subject to a Lien any asset which is acquired or held
subject to the interest of a vendor or lessor under any conditional sale
agreement, capital lease or other title retention agreement relating to such
asset.

         "Loan Papers" means this Agreement, the Notes, the Facility
Guarantees, the Parent Pledge Agreement, the Existing Mortgages (as amended by
the Amendment to Mortgages), and all Mortgages now or at any time hereafter
delivered pursuant to Section 5.1, and all other certificates, documents or
instruments delivered in connection with this Agreement, as the foregoing may
be amended from time to time.

         "Margin Regulations" means Regulations G, T, U and X of the Board of
Governors of the Federal Reserve System, as in effect from time to time.

         "Margin Stock" means "margin stock" as defined in Regulation U.

         "Marine" means Denbury Marine L.L.C., a Louisiana limited liability
company, which is a wholly owned Subsidiary of Borrower.

         "Material Adverse Effect" means a material adverse effect on (a) the
assets, liabilities, financial condition, results of operations or prospects of
any Credit Party, or the Credit Parties taken as a whole, (b) the right or
ability of any Credit Party to fully, completely and timely perform its
obligations under the Loan Papers, (c) the validity or enforceability of any
Loan Paper against any Credit Party which is a party thereto, or (d) the
validity, perfection or priority of any material Lien intended to be created
under or pursuant to any Loan Paper to secure the Obligations.

         "Material Agreement" means any material written or oral agreement,
contract, commitment, or understanding to which a Person is a party, by which
such Person is directly or indirectly bound, or to which any assets of such
Person may be subject, which is not cancelable by such Person upon notice of
thirty (30) days or less without liability for further payment other than
nominal penalty.

         "Material Gas Imbalance" means, with respect to all Gas Balancing
Agreements to which Borrower is a party or by which any Mineral Interest owned
by Borrower is bound, a net gas imbalance to Borrower in excess of $1,000,000.

         "Maximum Lawful Rate" means, for each Bank, the maximum rate (or, if
the context so permits or requires, an amount calculated at such rate) of
interest which, at the time in question would not cause the interest charged on
the portion of the Revolving Loan owed to such Bank at such time to exceed the
maximum amount which such Bank would be allowed to contract for, charge, take,
reserve, or receive under applicable Laws after taking into account, to the
extent required by applicable Laws, any and all relevant payments or charges
under the Loan Papers.  To the extent the Laws of the State of Texas are
applicable for purposes of determining the "Maximum Lawful Rate," such term
shall mean the "indicated rate ceiling" from time to time in effect under
Chapter 1D of the Texas Credit Title, Revised Civil





CREDIT AGREEMENT                                        PAGE 12
<PAGE>   19
Statutes of Texas, 1925, as amended, or, if permitted by applicable law and
effective upon the giving of the notices required by such Chapter 1D (or
effective upon any other date otherwise specified by applicable law), the
"quarterly ceiling" or "annualized ceiling" from time to time in effect under
such Chapter 1D, whichever Administrative Agent (with the approval of the
Required Banks) shall elect to substitute for the "indicated rate ceiling," and
vice versa, each such substitution to have the effect provided in such Chapter
1D, and Administrative Agent (with the approval of the Required Banks) shall be
entitled to make such election from time to time and one or more times and,
without notice to Borrower, to leave any such substitute rate in effect for
subsequent periods in accordance with such Chapter 1D.

         "Mineral Interests" means rights, estates, titles, and interests in
and to oil and gas leases and any oil and gas interests, royalty and overriding
royalty interest, production payment, net profits interests, oil and gas fee
interests, and other rights therein, including, without limitation, any
reversionary or carried interests relating to the foregoing, together with
rights, titles, and interests created by or arising under the terms of any
unitization, communization, and pooling agreements or arrangements, and all
properties, rights and interests covered thereby, whether arising by contract,
by order, or by operation of Laws, which now or hereafter include all or any
part of the foregoing.

         "Net Cash Proceeds" means (a) the gross proceeds received by any
Credit Party from any Securities Offering, less (b) underwriters discounts and
commissions, legal, accounting and other professional fees and expenses and
other usual and customary transaction costs, in each case only to the extent
paid or payable by a Credit Party in cash.

         "Non Conforming Margin" means 1.625%; provided, that the Non
Conforming Margin shall increase by .25% on each of March 1, 1998, June 1,
1998, September 1, 1998, December 1, 1998 and March 1, 1999.

         "Note" means a promissory note of Borrower payable to the order of a
Bank, in substantially the form of Exhibit C hereto, in the amount of such
Bank's Commitment, evidencing the obligation of Borrower to repay to such Bank
its Commitment Percentage of the Revolving Loan, together with all
modifications, extensions, renewals, and rearrangements thereof and  "Notes"
means all of such Notes collectively.

         "Notice of Continuation or Conversion" has the meaning set forth in
Section 2.5(c).

         "Obligations" means all present and future indebtedness, obligations
and liabilities, and all renewals and extensions thereof, or any part thereof,
of the Credit Parties to Agent or to any Bank or any Affiliate of any Bank
arising pursuant to the Loan Papers or pursuant to any Hedge Transaction
entered into with any Bank or any Affiliate of any Bank, and all interest
accrued thereon and costs, expenses, and attorneys' fees incurred in the
enforcement or collection thereof, regardless of whether such indebtedness,
obligations and liabilities are direct, indirect, fixed, contingent,
liquidated, unliquidated, joint, several or joint and several.

         "Oil & Gas Hedge Transaction" means a Hedge Transaction pursuant to
which any Person hedges the price to be received by it for future production of
hydrocarbons.





CREDIT AGREEMENT                                        PAGE 13
<PAGE>   20
         "Outstanding Credit" means, on any date, the sum of (a) the aggregate
outstanding Letter of Credit Exposure on such date including the aggregate
Letter of Credit Exposure related to Letters of Credit to be issued on such
date, plus (b) the outstanding principal balance of the Revolving Loan on such
date, including the amount of any Borrowing to be made on such date.

         "Parent" means Denbury Resources, Inc., a corporation incorporated
under the Canadian Business Corporations Act, which is the owner and holder of
one hundred percent (100%) of the issued and outstanding capital stock of
Borrower of every class.

         "Parent Pledge Agreement" means a Pledge Agreement in the form of
Exhibit D hereto to be executed by Parent in favor of Administrative Agent
pursuant to which Parent will pledge one hundred percent (100%) of the issued
and outstanding capital stock of Borrower of every class to Administrative
Agent to secure the Obligations.

         "PBGC" means the Pension Benefit Guaranty Corporation or any entity
succeeding to any or all of its functions under ERISA.

         "Permitted Encumbrances" means with respect to any asset:

         (a)     Liens securing the Obligations;

         (b)     Minor defects in title which do not secure the payment of
money and otherwise have no material adverse effect on the value or the
operation of the subject property, and for the purposes of this Agreement, a
minor defect in title shall include, but not be limited to, easements,
rights-of-way, servitudes, permits, surface leases and other similar rights in
respect of surface operations, and easements for pipelines, streets, alleys,
highways, telephone lines, power lines, railways and other easements and
rights-of-way, on, over or in respect of any of the properties of Borrower or
its Subsidiaries that are customarily granted in the oil and gas industry;

         (c)     Inchoate statutory or operators' liens securing obligations
for labor, services, materials and supplies furnished to Mineral Interests
which are not delinquent (except to the extent permitted by Section 8.7);

         (d)     Mechanic's, materialmen's, warehouseman's, journeyman's and
carrier's liens and other similar liens arising by operation of Law in the
ordinary course of business which are not delinquent (except to the extent
permitted by Section 8.7);

         (e)     Liens for Taxes or assessments not yet due or not yet
delinquent, or, if delinquent, that are being contested in good faith in the
normal course of business by appropriate action, as permitted by Section 8.7;

         (f)     Lease burdens payable to third parties which are deducted in
the calculation of discounted present value in the Reserve Report including,
without limitation, any royalty, overriding royalty, net profits interest,
production payment, carried interest or reversionary working interest;





CREDIT AGREEMENT                                        PAGE 14
<PAGE>   21
         (g)     "Permitted Encumbrances" as that term is defined in the
Existing Mortgages; and

         (h)     Liens, charges and encumbrances upon Borrower's assets, other
than Proved Mineral Interests, which in the aggregate, do not have a value in
excess of $1,000,000.

         "Permitted Investments"  means (a) readily marketable direct
obligations of the United States of America (or investments in mutual funds or
similar funds which invest solely in such obligations), (b) fully insured time
deposits and certificates of deposit with maturities of one year or less of any
commercial bank operating in the United States having capital and surplus in
excess of $50,000,000, (c) commercial paper of a domestic issuer if at the time
of purchase such paper is rated in one of the two highest ratings categories of
Standard and Poor's Corporation or Moody's Investors Service, and (d) other
Investments; provided that, the aggregate amount of all other Investments made
pursuant to this clause (d) outstanding at any time shall not exceed $1,000,000
(measured on a cost basis).

         "Permitted Subordinated Debt" means Debt of Borrower which (a) is
unsecured, (b) has a stated maturity of at least ten years from the date of
issue and does not provide for the establishment of any sinking fund or
otherwise require any mandatory redemption, repayment, defeasance, repurchase
or other amortization prior to the scheduled maturity, (c) does not provide for
a non-default rate of interest greater than ten percent (10%) per annum or
original issue discount greater than three percent (3%), in each case unless
approved by Required Banks, (d) is fully subordinated to the Obligations
pursuant to subordination provisions which have been approved by Required
Banks, such approval to not be unreasonably withheld, and (e) is not subject to
negative covenants or events of default (or other provisions which have the
same effect as negative covenants or events of default) which have not been
approved by Required Banks, such approval to not be unreasonably withheld.

         "Person" means an individual, a corporation, a partnership, an
association, a trust or any other entity or organization, including a
Government Authority.

         "Plan" means an employee benefit plan within the meaning of section
3(3) of ERISA, and any other similar plan, policy or arrangement, including an
employment contract, whether formal or informal and whether legally binding or
not, under which any Credit Party or an ERISA Affiliate of a Credit Party has
any current or future obligation or liability or under which any present or
former employee of any Credit Party or an ERISA Affiliate of a Credit Party, or
such present or former employee's dependents or beneficiaries, has any current
or future right to benefits resulting from the present or former employee's
employment relationship with any Credit Party or an ERISA Affiliate of a Credit
Party.

         "Prime Rate" means the per annum rate of interest established from
time to time by Administrative Agent as its prime rate, which rate may not be
the lowest rate of interest charged by Administrative Agent to its customers.

         "Proved Mineral Interests" means, collectively, Proved Producing
Mineral Interests, Proved Nonproducing Mineral Interests, and Proved
Undeveloped Mineral Interests.





CREDIT AGREEMENT                                        PAGE 15
<PAGE>   22
         "Proved Nonproducing Mineral Interests" means all Mineral Interests
which constitute proved developed nonproducing reserves.

         "Proved Producing Mineral Interests" means all Mineral Interests which
constitute proved developed producing reserves.

         "Proved Undeveloped Mineral Interests" means all Mineral Interests
which constitute proved undeveloped reserves.

         "Quarterly Date" means the last day of each March, June, September and
December.

         "Quarterly Repayment Date" means the last day of each February, May,
August and November.

         "Recognized Value" means, with respect to oil and gas properties, the
pre-tax value of such properties determined in accordance with Financial
Accounting Standards Board Statement 69, generally known as the "standardized
measure of discounted cash flow".

         "Redetermination" means any Scheduled Redetermination or Special
Redetermination.

         "Regulation U" means Regulation U of the Board of Governors of the
Federal Reserve System, 12 C.F.R. Part 221, as in effect from time to time.

         "Rejected Chevron Properties" has the meaning set forth in Section
6.1(c) hereof.

         "Request for Borrowing" has the meaning set forth in Section 2.2(a).

         "Request for Letter of Credit" has the meaning set forth in Section
2.3(a).

         "Required Banks" means Banks holding at least sixty-six and two-thirds
percent (66 2/3%) of the Total Commitment.

         "Required Consolidated Tangible Net Worth" means, initially,
$130,000,000; provided, that, the Required Consolidated Tangible Net Worth
shall (a) increase (but not decrease) on each Quarterly Date after January 1,
1998 by an amount equal to fifty percent (50%) of Parent's Consolidated Net
Income for the Fiscal Quarter then ended, and (b) increase on the date of any
issuance by Parent of its equity securities after January 1, 1998, by an amount
equal to fifty percent (50%) of the net proceeds received by Parent from the
issuance of such securities.

         "Reserve Report" means an unsuperseded engineering analysis of the
Mineral Interests owned by Borrower, in form and substance reasonably
acceptable to the Required Banks, prepared in accordance with customary and
prudent practices in the petroleum engineering industry and Financial
Accounting Standards Board Statement 69.  Each Reserve Report required to be
delivered by February 28 of each year pursuant to Section 4.1 shall be prepared
by the Approved Petroleum Engineer.  Each other Reserve Report shall be
prepared by Borrower's in-house staff.  Notwithstanding the foregoing, in
connection with any Special





CREDIT AGREEMENT                                        PAGE 16
<PAGE>   23
Redetermination requested by Borrower, the Reserve Report shall be in form and
scope mutually acceptable to Borrower and Required Banks.  Until superseded,
the Initial Reserve Report and the Chevron Reserve Report shall be considered
the Reserve Report.

         "Reserve Requirement" means, at any time, the maximum rate at which
reserves (including, without limitation, any marginal, special, supplemental,
or emergency reserves) are required to be maintained under regulations issued
from time to time by the Board of Governors of the Federal Reserve System (or
any successor) by member banks of the Federal Reserve System against in the
case of Eurodollar Loans, "Eurocurrency liabilities" (as such term is used in
Regulation D).  Without limiting the effect of the foregoing, the Reserve
Requirement shall reflect any other reserves required to be maintained by such
member banks with respect to (i) any category of liabilities which includes
deposits by reference to which the Adjusted Eurodollar Rate is to be
determined, or (ii) any category of extensions of credit or other assets which
include Eurodollar Loans.  The Adjusted Eurodollar Rate shall be adjusted
automatically on and as of the effective date of any change in the Reserve
Requirement.

         "Restricted Payment" means, with respect to any Person, (a) any
Distribution by such Person, or (b) the retirement, redemption, defeasance,
repurchase or prepayment prior to scheduled maturity by such Person or any
Affiliates of such Person of any Debt of such Person.

         "Revolving Loan" means the revolving credit loan in an amount
outstanding at any time not to exceed the amount of the Total Commitment then
in effect less the amount of the Letter Credit Exposure then outstanding to be
made by Banks to Borrower in accordance with Section 2.1 hereof.  The Revolving
Loan may be comprised of the Base Rate Loan and one or more Eurodollar Loans as
Borrower may select in a Request for Borrowing or a Notice of Continuation or
Conversion.

         "Schedule" means a "schedule" attached to this Agreement and
incorporated herein by reference, unless specifically indicated otherwise.

         "Scheduled Redetermination" means any Redetermination of the Borrowing
Base and the Conforming Borrowing Base pursuant to Section 4.4(a).

         "Section" refers to a "section" or "subsection" of this Agreement
unless specifically indicated otherwise.

         "Securities Offering" means the issuance or sale by any Credit Party
of Debt or equity securities at any time on or after the Closing Date,
including, without limitation, the issuance by Borrower of Permitted
Subordinate Debt.

         "Special Redetermination" means any Redetermination of the Borrowing
Base pursuant to Section 4.4(b).

         "Subsidiary" means, for any Person, any corporation or other entity of
which securities or other ownership interests having ordinary voting power to
elect a majority of the board of directors or other persons performing similar
functions (including that of a general partner) are





CREDIT AGREEMENT                                        PAGE 17
<PAGE>   24
at the time directly or indirectly owned, collectively, by such Person and any
Subsidiaries of such Person.

         "Syndication Agent" means NationsBanc Montgomery Securities, Inc. in
its capacity as Syndication Agent for the credit facilities evidenced hereby
pursuant to a separate engagement letter among NationsBanc Montgomery
Securities, Inc., NationsBank of Texas, N.A. and Borrower.

         "Taxes" means all taxes, assessments, filing or other fees, levies,
imposts, duties, deductions, withholdings, stamp taxes, capital transaction
taxes, foreign exchange taxes or other charges, or other charges of any nature
whatsoever, from time to time or at any time imposed by Law or any Governmental
Authority.  "Tax" means any one of the foregoing.

         "Termination Date" means December 31, 2002.

         "Texas Pacific Group" means TGP Partners, L.P., T.G.P. Parallel, L.P.,
and any of their Affiliates.

         "Total Commitment" means the Commitments of all Banks in an initial
aggregate amount of $300,000,000 as such amount shall be reduced from time to
time pursuant to Sections 2.8 and 2.9.

         "TRI" means Tallahatchie Resources, Inc., a Texas corporation which is
a wholly owned subsidiary of Borrower.

         "Type" shall means any type of Loan (i.e., the Base Rate Loan or a
Eurodollar Loan).

         "Unproved Reserves" means Mineral Interests which do not constitute
Proved Mineral Interests.

         SECTION 1.2.     Accounting Terms and Determinations.  Unless
otherwise specified herein, all accounting terms used herein shall be
interpreted, all accounting determinations hereunder shall be made, and all
financial statements required to be delivered hereunder shall be expressed in
U.S. Dollars and shall be prepared in accordance with GAAP, applied on a basis
consistent with the most recent audited consolidated financial statements of
Parent and its Consolidated Subsidiaries delivered to Banks except for changes
concurred in by Parent's independent certified public accountants and which are
disclosed to Administrative Agent on the next date on which financial
statements are required to be delivered to Banks pursuant to Sections 8.1(a) or
(b); provided that, unless Required Banks shall otherwise agree in writing, no
such change shall modify or affect the manner in which compliance with the
covenants contained in Article X are computed such that all such computations
shall be conducted utilizing financial information presented consistently with
prior periods.  To the extent the application of generally accepted accounting
principles in effect in the United States (and recognized as such by the
American Institute of Certified Public Accountants or by the Financial
Accounting Standards [or other appropriate boards or committees] ("U.S. GAAP"))
to the financial statements and other financial information provided to
Administrative Agent and Banks hereunder would result in any material variation
in the information included in such





CREDIT AGREEMENT                                        PAGE 18
<PAGE>   25
statements and information, Borrower shall notify Administrative Agent and
Banks of such deviation and of any adjustments which would be necessary to
reconcile such statements to U.S. GAAP.

         SECTION 1.3.     Petroleum Terms.  As used herein, the terms "proved
reserves," "proved developed reserves," "proved developed producing reserves,"
"proved developed nonproducing reserves," and "proved undeveloped reserves"
have the meaning given such terms from time to time and at the time in question
by the Society of Petroleum Engineers of the American Institute of Mining
Engineers.


                                   ARTICLE II

                                   THE CREDIT

         SECTION 2.1.     Commitments.  (a) Each Bank severally agrees, subject
to Section 2.1(c) and the other terms and conditions set forth in this
Agreement, to lend to Borrower from time to time prior to the Termination Date
amounts not to exceed in the aggregate at any one time outstanding, the amount
of such Bank's Commitment reduced by an amount equal to such Bank's Letter of
Credit Exposure.  Each Borrowing shall be in an aggregate principal amount of
$1,000,000 or any larger integral multiple of $100,000 (except that any Base
Rate Borrowing may be in an amount equal to the Availability at such time), and
(ii) shall be made from the Banks ratably in accordance with their respective
Commitment Percentages.  Subject to the foregoing limitations and the other
provisions of this Agreement, prior to the Termination Date Borrower may borrow
under this Section 2.1(a), repay amounts borrowed and request new Borrowings
hereunder.

         (b)     Administrative Agent will, from time to time prior to the
Termination Date, upon request by Borrower, issue Letters of Credit for the
account of Borrower or any Subsidiary of Borrower designated by Borrower, so
long as (i) the sum of (A) the total Letter of Credit Exposure then existing,
and (B) the amount of the requested Letter of Credit does not exceed ten
percent (10%) of the lesser of (y) the Total Commitment, and (z) the Conforming
Borrowing Base, and (ii) Borrower would be entitled to a Borrowing under
Sections 2.1(a) and (c) in the amount of the requested Letter of Credit.  Not
less than three (3) Domestic Business Days prior to the requested date of
issuance of any such Letter of Credit, Borrower (and any Subsidiary for whose
account such Letter of Credit is being issued) shall execute and deliver to
Administrative Agent, Administrative Agent's customary letter of credit
application.  Each Letter of Credit shall be in the minimum amount of $10,000
and shall be in form and substance acceptable to Administrative Agent.  No
Letter of Credit shall have an expiration date later than the earlier of (i)
the Termination Date, or (ii) one (1) year from the date of issuance.  Upon the
date of issuance of a Letter of Credit, Administrative Agent shall be deemed to
have sold to each other Bank, and each other Bank shall be deemed to have
unconditionally and irrevocably purchased from Administrative Agent, a non
recourse participation in the related Letter of Credit and Letter of Credit
Exposure equal to such Bank's Commitment Percentage of such Letter of Credit
and Letter of Credit Exposure.  Upon request of any Bank, but not less often
than quarterly, Administrative Agent shall provide notice to each Bank by
telephone, teletransmission or telex setting forth each Letter of Credit issued
and outstanding pursuant to





CREDIT AGREEMENT                                        PAGE 19
<PAGE>   26
the terms hereof and specifying the beneficiary and expiration date of each
such Letter of Credit, each Bank's percentage of each such Letter of Credit and
the actual dollar amount of each Bank's participation held by the
Administrative Agent for such Bank's account and risk.  If any Letter of Credit
is presented for payment by the beneficiary thereof, Administrative Agent shall
cause a Base Rate Borrowing to be made to reimburse Administrative Agent for
the payment under the Letter of Credit, whether or not Borrower would then be
entitled to a Borrowing pursuant to the terms hereof, and each Bank shall be
obligated to lend its Commitment Percentage of such Base Rate Borrowing.  At
the time of issuance of each Letter of Credit, Borrower shall pay to
Administrative Agent in respect of such Letter of Credit (a) the applicable
Letter of Credit Fee, and (b) to the extent the stated amount of such Letter of
Credit is equal to or in excess of $1,000,000, the applicable Letter of Credit
Fronting Fee.  Administrative Agent shall distribute the Letter of Credit Fee
payable upon the issuance of each Letter of Credit to Banks in accordance with
their respective Commitment Percentages, and Administrative Agent shall retain
the Letter of Credit Fronting Fee for its own account.

         Upon the occurrence of an Event of Default and the acceleration of the
Obligations hereunder, Borrower shall, on the next succeeding Domestic Business
Day, deposit with Administrative Agent cash in such amounts as Administrative
Agent may request, up to a maximum amount equal to the aggregate existing
Letter of Credit Exposure of all Banks.  Any amounts so deposited shall be held
by Administrative Agent for the ratable benefit of all Banks as security for
the outstanding Letter of Credit Exposure and the other Obligations, and
Borrower will, in connection therewith, execute and deliver such security
agreements in form and substance satisfactory to Administrative Agent which it
may, in its discretion, require.  As drafts or demands for payment are
presented under any Letter of Credit, Administrative Agent shall apply such
cash to satisfy such drafts or demands.  When all Letters of Credit have
expired and the Obligations have been repaid in full (and no Bank has any
obligation to lend or issue Letters of Credit hereunder) or such Event of
Default has been cured to the satisfaction of Required Banks, Administrative
Agent shall release to Borrower any remaining cash deposited under this Section
2.1(b).  Whenever Borrower is required to make deposits under this Section
2.1(b) and fails to do so on the day such deposit is due, Administrative Agent
or any Bank may, without notice to Borrower, make such deposit (whether by
application of proceeds of any collateral for the Obligation, by transfers from
other accounts maintained with any Bank or otherwise) using any funds then
available to any Bank of any Credit Party.

         (c)     No Bank will be obligated to lend to Borrower hereunder or
incur Letter of Credit Exposure, and Borrower shall not be entitled to borrow
hereunder or obtain Letters of Credit hereunder in an amount which would cause
the Outstanding Credit to exceed the Borrowing Base then in effect under
Article IV.  No Bank shall be obligated to fund Borrowings hereunder and
Borrower shall not be entitled to Borrowings hereunder during the existence of
a Borrowing Base Deficiency.  Nothing in this Section 2.1(c) shall be deemed to
limit any Bank's obligation to fund Base Rate Borrowings with respect to its
participation in Letters of Credit in connection with any Borrowing made as a
result of the drawing under any Letter of Credit.

         SECTION 2.2.     Method of Borrowing  (a) In order to request any
Borrowing hereunder, Borrower shall hand deliver, telex or telecopy to
Administrative Agent a duly completed Request for Borrowing (herein so called)
prior to 12:00 noon (Dallas, Texas time),





CREDIT AGREEMENT                                        PAGE 20
<PAGE>   27
(i) at least one (1) Domestic Business Day before the Borrowing Date specified
for a proposed Base Rate Borrowing, and (ii) at least three (3) Eurodollar
Business Days before the Borrowing Date of a proposed Eurodollar Borrowing.
Each such Request for Borrowing shall be substantially in the form of Exhibit E
hereto, and shall specify:

                 (i)      the Borrowing Date of such Borrowing, which shall be
                 a Domestic Business Day in the case of a Base Rate Borrowing
                 or a Eurodollar Business Day in the case of a Eurodollar
                 Borrowing;

                 (ii)     the aggregate amount of such Borrowing;

                 (iii)    whether such Borrowing is to be a Base Rate Borrowing
                 or a Eurodollar Borrowing; and

                 (iv)     in the case of a Eurodollar Borrowing, the duration
                 of the Interest Period applicable thereto, subject to the
                 provisions of the definition of Interest Period.

         (b)     Upon receipt of a Request for Borrowing, Administrative Agent
shall promptly notify each Bank of the contents thereof and the amount of the
Borrowing to be loaned by such Bank pursuant thereto, and such Request for
Borrowing shall not thereafter be revocable by Borrower.

         (c)     Not later than 12:00 noon (Dallas, Texas time) on the date of
each Borrowing, each Bank shall make available its Commitment Percentage of
such Borrowing, in Federal or other funds immediately available in Dallas,
Texas to Administrative Agent at its address set forth on Schedule 1.1 hereto.
Notwithstanding the foregoing, if Borrower delivers to Administrative Agent a
Request for Borrowing prior to 10:00 a.m. (Dallas, Texas time) on a Domestic
Business Day requesting a Base Rate Borrowing on such day, each Bank shall use
its best efforts to make available to Administrative Agent its Commitment
Percentage of such Borrowing by 1:00 p.m. (Dallas, Texas time) on the same day.
Unless Administrative Agent determines that any applicable condition specified
in Section 6.2 has not been satisfied, Administrative Agent will make the funds
so received from Banks available to Borrower at Administrative Agent's
aforesaid address.

         SECTION 2.3.     Method of Requesting Letters of Credit.  (a) In order
to request any Letter of Credit hereunder, Borrower shall hand deliver, telex
or telecopy to Administrative Agent a duly completed Request for Letter of
Credit (herein so called) prior to 12:00 noon (Dallas, Texas time) at least
three (3) Domestic Business Days before the date specified for issuance of such
Letter of Credit.  Each Request for Letter of Credit shall be substantially in
the form of Exhibit F hereto, shall be accompanied by the Administrative
Agent's duly completed and executed letter of credit application and agreement
and shall specify:

                 (i)      the requested date for issuance of such Letter of
                 Credit;

                 (ii)     the terms of such requested Letter of Credit,
                 including the name and address of the beneficiary, the stated
                 amount, the expiration date and the





CREDIT AGREEMENT                                        PAGE 21
<PAGE>   28
                 conditions under which drafts under such Letter of Credit are
                 to be available; and

                 (iii)    the purpose of such Letter of Credit.

         (b)     Upon receipt of a Request for Letter of Credit, Administrative
Agent shall promptly notify each Bank of the contents thereof, including the
amount of the requested Letter of Credit, and such Request for Letter of Credit
shall not thereafter be revocable by Borrower.

         (c)     No later than 12:00 noon (Dallas, Texas time) on the date each
Letter of Credit is requested, unless Administrative Agent determines that any
applicable condition precedent set forth in Section 6.2 hereof has not been
satisfied, the Administrative Agent will issue and deliver such Letter of
Credit pursuant to the instructions of Borrower.

         SECTION 2.4.     Notes.  Each Bank's Commitment Percentage of the
Revolving Loan shall be evidenced by a single Note payable to the order of such
Bank in an amount equal to such Bank's Commitment.

         SECTION 2.5.     Interest Rates; Payments.  (a)  The principal amount
of the Base Rate Loan shall bear interest at a rate per annum equal to the Base
Rate in effect from day to day; provided that in no event shall the rate
charged hereunder or under the Notes exceed the Maximum Lawful Rate.   Interest
on the Base Rate Loan shall be payable as it accrues on each Quarterly Date,
and on the Termination Date.

         (b)      The principal amount of each Eurodollar Loan shall bear
interest for the Interest Period applicable thereto at a rate per annum equal
to the sum of the Applicable Margin plus the applicable Adjusted Eurodollar
Rate; provided that in no event shall the rate charged hereunder or under the
Notes exceed the Maximum Lawful Rate.  Interest on any Eurodollar Loan having
an Interest Period of one (1), two (2) or three (3) months shall be payable on
the last day of the Interest Period applicable thereto.  Interest on any
Eurodollar Loan having an Interest Period of six (6), or twelve (12) months
shall be payable on the last day of the Interest Period applicable thereto and
on each Quarterly Date.

         (c)     So long as no Default or Event of Default shall be continuing,
subject to the provisions of this Section 2.5, Borrower shall have the option
of having all or any portion of the principal outstanding under the Revolving
Loan be a Base Rate Loan or one (1) or more Eurodollar Loans, which shall bear
interest at rates determined by reference to the Base Rate and the Adjusted
Eurodollar Rate, respectively; provided, that each Eurodollar Loan shall be in
a minimum amount of $2,000,000 and shall be in an amount which is an integral
multiple of $500,000.  Prior to the termination of each Interest Period with
respect to each Eurodollar Loan, Borrower shall give written notice (a "Notice
of Continuation or Conversion") in the form of Exhibit G attached hereto to
Administrative Agent of the Type of Loan which shall be applicable to the
principal of such Eurodollar Loan upon the expiration of such Interest Period.
Such Notice of Continuation or Conversion shall be given to Administrative
Agent at least one (1) Domestic Business Day, in the case of a Base Rate Loan
selection and three (3) Eurodollar Business Days, in the case of a Eurodollar
Loan selection, prior to the termination of the Interest Period then expiring.
If Borrower shall specify a Eurodollar Loan, such Notice





CREDIT AGREEMENT                                        PAGE 22
<PAGE>   29
of Continuation or Conversion shall also specify the length of the succeeding
Interest Period (subject to the definition of such term) selected by Borrower.
Each Notice of Continuation or Conversion shall be irrevocable and effective
upon notification thereof to Administrative Agent.  If the required Notice of
Continuation or Conversion shall not have been timely received by
Administrative Agent, Borrower shall be deemed to have elected that the
principal of the Eurodollar Loan subject to the Interest Period then expiring
be a part of the Base Rate Loan  upon the expiration of such Interest Period
and Borrower will be deemed to have given Administrative Agent notice of such
election.  Subject to the limitations set forth in this Section 2.5(c) on the
amount and number of Eurodollar Loans, Borrower shall have the right to convert
(a "Conversion") all or any part of the Base Rate Loan to a Eurodollar Loan by
giving Administrative Agent a Notice of Continuation or Conversion of such
election at least three (3) Eurodollar Business Days prior to the date on which
Borrower elects to make such conversion (a "Conversion Date").  The Conversion
Date selected by Borrower shall be a Eurodollar Business Day.  Notwithstanding
anything in this Section 2.5 to the contrary, no portion of the principal of
the Base Rate Loan may be Converted to a Eurodollar Loan and no Eurodollar Loan
may be Continued as such when any Default or Event of Default has occurred and
is continuing, but each such Eurodollar Loan shall be automatically Converted
to the Base Rate Loan on the last day of each applicable Interest Period.
Borrower shall not be permitted to have more than seven (7) Eurodollar Loans in
effect at any time.

         (d)     Notwithstanding anything to the contrary set forth in Section
2.5(a) or (b) above, all overdue principal of and, to the extent permitted by
law, overdue interest, shall bear interest from the date due, payable on
demand, for each day until paid at a rate per annum equal to the lesser of (a)
the sum of (i) three percent (3%), plus (ii) the Base Rate in effect from day
to day, and (b) the Maximum Lawful Rate.

         (e)     Agent shall determine each interest rate applicable to the
Revolving Loan in accordance with the terms hereof.  Agent shall promptly
notify Borrower and Banks by telex, telecopy or cable of each rate of interest
so determined, and its determination thereof shall be conclusive in the absence
of manifest error.

         (f)     Notwithstanding the foregoing, if at any time the rate of
interest calculated with reference to the Base Rate or the Eurodollar Rate
hereunder (the "contract rate") is limited to the Maximum Lawful Rate, any
subsequent reductions in the contract rate shall not reduce the rate of
interest on the Revolving Loan below the Maximum Lawful Rate until the total
amount of interest accrued equals the amount of interest which would have
accrued if the contract rate had at all times been in effect.  In the event
that at maturity (stated or by acceleration), or at final payment of any Note,
the total amount of interest paid or accrued on such Note is less than the
amount of interest which would have accrued if the contract rate had at all
times been in effect with respect thereto, then at such time, to the extent
permitted by law, Borrower shall pay to the holder of such Note an amount equal
to the difference between (i) the lesser of the amount of interest which would
have accrued if the contract rate had at all times been in effect and the
amount of interest which would have accrued if the Maximum Lawful Rate had at
all times been in effect, and (ii) the amount of interest actually paid on such
Note.

         (g)     Interest payable hereunder on each Eurodollar Loan shall be
computed based on the number of actual days elapsed assuming that each calendar
year consisted of 360 days.





CREDIT AGREEMENT                                        PAGE 23
<PAGE>   30
Interest payable hereunder on the Base Rate Loan shall be computed based on the
actual number of days elapsed assuming that each calendar year consisted of 365
days.

         SECTION 2.6.     Mandatory Prepayments.  Simultaneously with any
reduction of the Borrowing Base pursuant to Section 4.6 hereof, Borrower shall
make a mandatory prepayment on the Revolving Loan in an amount sufficient to
reduce the Outstanding Credit to the amount of the Borrowing Base as thereby
reduced.  Upon the occurrence of any other Borrowing Base Deficiency, Borrower
shall make the mandatory prepayments of the Revolving Loan required by Section
4.5 hereof.

         SECTION 2.7.     Voluntary Prepayments.  Borrower may, subject to
Section 3.3 and the other provisions of this Agreement, upon three (3) Domestic
Business Days advance notice to Administrative Agent, prepay the principal of
Revolving Loan in whole or in part.  Any partial prepayment shall be in a
minimum amount of $500,000 and shall be in an integral multiple of $100,000.

         SECTION 2.8.     Voluntary Reduction of Commitments.  Borrower may, by
notice to Administrative Agent five (5) Domestic Business Days prior to the
effective date of any such reduction, reduce the Total Commitment (and thereby
reduce the Commitment of each Bank ratably) in amounts not less than $5,000,000
and in an amount which is an integral multiple of $1,000,000.  On the effective
date of any such reduction, Borrower shall, to the extent required as a result
of such reduction, make a principal payment on the Revolving Loan in an amount
sufficient to cause the principal balance of the Revolving Loan then
outstanding to be equal to or less than the Total Commitment as thereby
reduced.  Notwithstanding the foregoing, Borrower shall not be permitted to
voluntarily reduce the Total Commitment to an amount less than the aggregate
Letter of Credit Exposure of all Banks.

         SECTION 2.9.     Termination of Commitments; Final Maturity.  The
Total Commitment (and the Commitment of each Bank) shall terminate, and the
entire outstanding principal balance of the Revolving Loan, all interest
accrued thereon, all accrued but unpaid fees hereunder and all other
outstanding Obligations shall be due and payable in full on the Termination
Date.

         SECTION 2.10.    Application of Payments.  Each repayment pursuant to
Sections 2.6, 2.7, 2.8, 2.9, 4.5 and 4.6 shall be made together with accrued
interest on the amount repaid to the date of payment, and shall be applied in
accordance with Section 3.2 and the other provisions of this Agreement.

         SECTION 2.11.    Commitment Fee.  On the Termination Date, on each
Quarterly Date prior to the Termination Date, and, in the event the Commitments
are terminated in their entirety prior to the Termination Date, on the date of
such termination, Borrower shall pay to Administrative Agent, for the ratable
benefit of each Bank based on each Bank's Commitment Percentage, a commitment
fee equal to the Commitment Fee Percentage (applied on a per annum basis and
computed on the basis of actual days elapsed and as if each calendar year
consisted of 365 days) of the average daily Availability for the Fiscal Quarter
(or portion thereof) ending on such Quarterly Date.





CREDIT AGREEMENT                                        PAGE 24
<PAGE>   31
         SECTION 2.12.    Agency and other Fees.  Borrower shall pay to Agents
and their Affiliates such other fees and amounts as Borrower shall be required
to pay to Agents and their Affiliates from time to time pursuant to any
separate agreement between Borrower and any Agent or such Affiliates.  Such
fees and other amounts shall be retained by Agents and their Affiliates, and no
Bank (other than NationsBank of Texas, N.A.) shall have any interest therein.

                                  ARTICLE III

                               GENERAL PROVISIONS

         SECTION 3.1.     Delivery and Endorsement of Notes.  Simultaneously
with the execution of this Agreement, Administrative Agent shall deliver to
each Bank the Note payable to such Bank.  Each Bank may endorse (and prior to
any transfer of its Note shall endorse) on the schedules attached and forming a
part thereof appropriate notations to evidence the date and amount of its
Commitment Percentage of each Borrowing, the Interest Period applicable
thereto, and the date and amount of each payment of principal made by Borrower
with respect thereto; provided that the failure by any Bank to so endorse its
Note shall not affect the liability of Borrower for the repayment of all
amounts outstanding under such Note together with interest thereon.  Each Bank
is hereby irrevocably authorized by Borrower to endorse its Note and to attach
to and make a part of any Note a continuation of any such schedule as required.

         SECTION 3.2.     General Provisions as to Payments.  (a)  All
principal, interest and other amounts to be paid by the Credit Parties under
this Agreement and the other Loan Papers shall be paid to Administrative Agent
in U.S.  dollars in Federal or other funds immediately available in Dallas,
Texas,  at Administrative Agent's address set forth on Schedule 1.1 hereto,
without setoff, deduction or counterclaim.  All such payments shall be made not
later than 12:00 noon (Dallas, Texas time) on the date due.  Administrative
Agent will promptly (and if such payment is received by Administrative Agent by
10:00 a.m., and otherwise if reasonably possible, on the same Domestic Business
Day) distribute to each Bank its Commitment Percentage of each such payment
received by Administrative Agent for the account of Banks.  Whenever any
payment of principal of, or interest on, the Base Rate Loan or of fees shall be
due on a day which is not a Domestic Business Day, the date for payment thereof
shall be extended to the next succeeding Domestic Business Day (subject to the
definition of Interest Period).  Whenever any payment of principal of, or
interest on, any portion of any Eurodollar Loan shall be due on a day which is
not a Eurodollar Business Day, the date for payment thereof shall be extended
to the next succeeding Eurodollar Business Day (subject to the definition of
Interest Period).  If the date for any payment of principal is extended by
operation of Law or otherwise, interest thereon shall be payable for such
extended time.  Borrower hereby authorizes Administrative Agent to charge from
time to time against Borrower's accounts with Administrative Agent any amount
then due.

         (b)     Prior to the occurrence of an Event of Default, all principal
payments received by Banks with respect to the Revolving Loan shall be applied
first to Eurodollar Loans outstanding with Interest Periods ending on the date
of such payment, then to the Base Rate Loan, and then to Eurodollar Loans next
maturing until such principal payment is fully applied.





CREDIT AGREEMENT                                        PAGE 25
<PAGE>   32
         (c)     After the occurrence of an Event of Default, all amounts
collected or received by Administrative Agent or any Bank shall be applied
first to the payment of all proper costs incurred by Administrative Agent in
connection with the collection thereof (including reasonable expenses and
disbursements of Administrative Agent), second to the payment of all proper
costs incurred by Banks in connection with the collection thereof (including
reasonable expenses and disbursements of Banks), third to the reimbursement of
any advances made by Banks to effect performance of any unperformed covenants
of Borrower under any of the Loan Papers, fourth to the payment of any unpaid
fees required pursuant to Section 2.11, fifth to the payment of any unpaid fees
required pursuant to Sections 2.1(b) and 2.10, sixth, to payment to each Bank
of its Commitment Percentage of outstanding principal of the Revolving Loan and
accrued but unpaid interest thereon, and seventh to establish the deposits
required in Section 2.1(b).  All payments received by a Bank after the
occurrence of an Event of Default for application to the principal of the
Revolving Loan shall be applied by such Bank in the manner provided in Section
3.2(b).


                                   ARTICLE IV

                                 BORROWING BASE

         SECTION 4.1.     Borrowing Base and Conforming Borrowing Base.  The
aggregate amount of credit available to Borrower under this Credit Agreement
shall be limited by a Borrowing Base (herein so called) which shall be
determined by the Banks at the times and in accordance with the standards and
procedures set forth in this Article IV.  The Borrowing Base shall be based in
part on Reserve Reports prepared as of December 31 and June 30 of each year
which shall be delivered by Borrower to each Bank as soon as available, but in
no event later than February 28 and August 31 of each year, respectively.
Simultaneously with the delivery of each such Reserve Report, the Borrower
shall notify the Banks of the Borrowing Base which Borrower requests become
effective on the next Redetermination.  The Banks may, in their sole
discretion, establish a Borrowing Base from time to time which is higher than
the Borrowing Base would be if the Banks determined the Borrowing Base based on
each Bank's application of the credit standards and other criteria customarily
applied by such Bank in the determination of credit limitations for companies
similar to Borrower ("Conforming Credit Criteria").  At the time of each
Redetermination, the Banks shall also determine what the Borrowing Base would
be if they applied Conforming Credit Criteria (the "Conforming Borrowing
Base").  If the Bank's do not determine a Conforming Borrowing Base, the
Borrowing Base as redetermined shall also be the Conforming Borrowing Base for
purposes of this Agreement.

         SECTION 4.2.     Standards Applicable to Determination of Borrowing
Base and Conforming Borrowing Base.  The Borrowing Base shall be determined by
the Banks in their sole discretion, and in determining the Borrowing Base no
Bank is required to apply Conforming Credit Criteria, and each Bank (a) may
make such assumptions regarding appropriate existing and projected pricing for
Hydrocarbons as it deems appropriate in its sole discretion, (b) may make such
assumptions regarding projected rates and quantities of future production of
Hydrocarbons from the Mineral Interests owned by Borrower as it deems
appropriate in its sole discretion, (c) may consider the projected cash
requirements of the Credit





CREDIT AGREEMENT                                        PAGE 26
<PAGE>   33
Parties, (d) is not required to consider any asset other than Proved Mineral
Interests with respect to which Borrower has good and valid title subject to no
Liens other than Permitted Encumbrances, (e) will not consider any Mineral
Interest not subject to a first and prior Lien in favor of Agent to secure the
Obligations to the extent a Lien on such Mineral Interest is required by
Section 5.1 hereof, and (f) may make such other assumptions, considerations and
exclusions and consider such other credit criteria as such Bank deems
appropriate.  The Conforming Borrowing Base shall also be determined by the
Banks in their sole discretion, and in determining the amount of the Conforming
Borrowing Base, each Bank may make the assumptions and consider the factors and
criteria set forth in clauses (a) through (f) above; provided, that each Bank
shall apply Conforming Credit Criteria.

         SECTION 4.3.     Bank Approval of Borrowing Base.  The Borrowing Base
and Conforming Borrowing Base which becomes effective upon any Redetermination
shall be approved by (a) the unanimous consent of all Banks to the extent such
Borrowing Base or Conforming Borrowing Base represents an increase in the
Borrowing Base or Conforming Borrowing Base, respectively, in effect prior to
such Redetermination, and (b) shall be approved by Required Banks to the extent
such Borrowing Base or Conforming Borrowing Base represents a reaffirmation of,
or a decrease in, the Borrowing Base or Conforming Borrowing Base,
respectively, in effect prior to such Redetermination.

         SECTION 4.4.     Redetermination Dates.  (a)  The Borrowing Base and
the Conforming Borrowing Base shall be Redetermined on July 1, 1998 and on each
October 1 and April 1 thereafter commencing October 1, 1998, or, in each such
case, on a date as promptly thereafter as reasonably possible based on the
engineering and other information available to the Banks.

         (b)     In addition to Scheduled Redeterminations, Borrower and
Required Banks shall each be entitled to require a Special Redetermination of
the Borrowing Base and Conforming Borrowing Base once in each Fiscal Year.  Any
request for a Special Determination shall be made pursuant to a written notice
to the other parties to this Agreement, and, in the case of a request by
Borrower, such notice shall be accompanied by a Reserve Report.  Any Special
Redetermination shall be made twenty (20) days following delivery of the notice
requesting such Special Redetermination or on a date as promptly thereafter as
reasonably possible based on the engineering and other information available to
the Banks.

         SECTION 4.5.     Borrowing Base Deficiency.  Except as provided in
Section 4.6, to the extent a Borrowing Base Deficiency exists after giving
effect to any Redetermination, Borrower shall be obligated to eliminate such
Borrowing Base Deficiency over a period not to exceed six (6) months from the
effective date of such Redetermination by making six (6) mandatory, equal,
consecutive, monthly payments of principal on the Revolving Loan, each of which
shall be in the amount of one sixth (1/6th) of such Borrowing Base Deficiency,
or in the event that the remaining principal outstanding under the Revolving
Loan is less than the Borrowing Base Deficiency, then in the amount of one
sixth (1/6th) of the remaining principal outstanding under the Revolving Loan.
The first of such six (6) payments shall be due on the thirtieth (30th) day
following the effective date of each such Redetermination and each subsequent
payment shall be due on the same day of each month thereafter (or if there is
no corresponding day of any subsequent month, then on the last day of such
month) (each such





CREDIT AGREEMENT                                        PAGE 27
<PAGE>   34
date is referred to herein as a "borrowing base deficiency payment date").  If
a Borrowing Base Deficiency cannot be eliminated pursuant to this Section 4.5
by prepayment of the Revolving Loan in full (as a result of outstanding Letter
of Credit Exposure), on each borrowing base deficiency payment date, Borrower
shall also deposit cash with Agent, to be held by Agent to secure outstanding
Letter of Credit Exposure in the manner contemplated by Section 2.1(b), an
amount at least equal to one sixth (1/6th) of the balance of such Borrowing
Base Deficiency (i.e., one-sixth of the difference between the Borrowing Base
Deficiency and the remaining outstanding principal under the Revolving Loan on
the effective date of such Redetermination).

         SECTION 4.6.     Initial Borrowing Base.  The Borrowing Base shall be
$260,000,000 and the Conforming Borrowing Base shall be $175,000,000 for the
period commencing on the Closing Date and ending on the effective date of the
first Redetermination after the Closing Date; provided, that in the event the
Rejected Chevron Properties have a Recognized Value (as reflected in the
Chevron Reserve Report) of $5,000,000 or greater, the Required Banks may
establish a lower initial Borrowing Base and initial Conforming Borrowing Base
which gives effect to Borrower's rejection of such properties, such lower
initial Borrowing Base and initial Conforming Borrowing Base to be reflected in
a written notice from Administrative Agent to Borrower delivered on or promptly
following the Closing Date.  The Borrowing Base in effect under this Section
4.6 shall reduce (but not below the Conforming Borrowing Base) immediately upon
the consummation of any Securities Offering by any Credit Party in an amount
equal to the Net Cash Proceeds resulting from such Offering.  Simultaneously
with any such reduction, Borrower shall make a mandatory prepayment of the
Revolving Loan in an amount sufficient to eliminate any Borrowing Base
Deficiency resulting from such reduction in the Borrowing Base.


                                   ARTICLE V

                           COLLATERAL AND GUARANTEES

         SECTION 5.1.  Security.  (a) The Obligations shall be secured by (i)
the Existing Mortgages  which create first and prior Liens (subject only to
Permitted Encumbrances) covering and encumbering the Mineral Interests
described therein, and (ii) one hundred percent (100%) of the issued and
outstanding capital stock of every class of Borrower.  On or prior to the
Closing Date, Borrower shall enter into the Amendment to Existing Mortgages,
and Parent shall enter into the Parent Pledge Agreement.

         (b)     If the Outstanding Credit exceeds the Conforming Borrowing
Base as redetermined on July 1, 1998 or if a Borrowing Base Deficiency exists
after July 1, 1998, Borrower shall immediately execute and deliver Mortgages to
Administrative Agent, for the ratable benefit of each Bank, in form and
substance acceptable to Administrative Agent to grant, evidence and perfect
first and prior Liens securing the Obligations, covering substantially all
Mineral Interests owned by Borrower subject only to Permitted Encumbrances.

         (c)     At any time Borrower or any of its Subsidiaries are required
to execute and deliver Mortgages to Agent pursuant to this Section 5.1,
Borrower shall also deliver to Administrative Agent such opinions of counsel
(addressed to Administrative Agent) and other





CREDIT AGREEMENT                                        PAGE 28
<PAGE>   35
evidence of title as Administrative Agent shall deem necessary or appropriate
to verify (i) Borrower's title to Proved Mineral Interests with a Recognized
Value equal to at least 85% of the Recognized Value of all Proved Mineral
Interests reflected in the Reserve Report which are subject to such Mortgages,
and (ii) the validity, perfection and priority of the Liens created by such
Mortgages.

         SECTION 5.2.     Guarantees.  Payment and performance of the
Obligations shall be fully guaranteed by Parent pursuant to the Facility
Guaranty duly executed and delivered by Parent.


                                   ARTICLE VI

                              CONDITIONS PRECEDENT

         SECTION 6.1.     Conditions to Restatement and Initial Borrowing and
Participation in Letter of Credit Exposure.  The restatement of the Existing
Credit Agreement on the terms set forth herein, and the obligation of each Bank
to loan its Commitment Percentage of the initial Borrowing hereunder and the
obligation of Administrative Agent to issue (or cause another Bank to issue)
any Letter of Credit issued hereunder is subject to the satisfaction of each of
the following conditions:

         (a)     Closing Deliveries.  Administrative Agent shall have received
each of the following documents, instruments and agreements, each of which
shall be in form and substance and executed in such counterparts as shall be
acceptable to Administrative Agent and each Bank and each of which shall,
unless otherwise indicated, be dated the Closing Date:

                 (i)      a Note payable to the order of each Bank, each in the
                 amount of such Bank's Commitment, duly executed by Borrower;

                 (ii)     the Parent Pledge Agreement, duly executed by Parent
                 together with the certificate(s) evidencing one hundred
                 percent (100%) of the issued and outstanding capital stock of
                 Borrower of every class which certificate(s) shall be duly
                 endorsed or accompanied by appropriate stock powers executed
                 in blank;

                 (iii)    [intentionally deleted];

                 (iv)     the Facility Guaranty duly executed by Parent;

                 (v)      a copy of the Articles or Certificate of
                 Incorporation or comparable charter documents, and all
                 amendments thereto, of each Credit Party accompanied by a
                 certificate that such copy is true, correct and complete, and
                 dated within ten (10) days of the Closing Date, issued by the
                 appropriate Governmental Authority of the jurisdiction of
                 incorporation or organization of each Credit Party, and
                 accompanied by a certificate of the Secretary or comparable
                 Authorized Officer of each Credit Party that such copy is
                 true, correct and complete on the Closing Date;





CREDIT AGREEMENT                                        PAGE 29
<PAGE>   36
                 (vi)     a copy of the Bylaws or comparable charter documents,
                 and all amendments thereto, of each Credit Party accompanied
                 by a certificate of the Secretary or comparable Authorized
                 Officer of each Credit Party that such copy is true, correct
                 and complete as of the date hereof;

                 (vii)    certain certificates and other documents issued by
                 the appropriate Governmental Authorities of such jurisdictions
                 as Administrative Agent has requested relating to the
                 existence of each Credit Party and to the effect that each
                 Credit Party is in good standing with respect to the payment
                 of franchise and similar Taxes and is duly qualified to
                 transact business in such jurisdictions;

                 (viii)   a certificate of incumbency of all officers of each
                 Credit Party who will be authorized to execute or attest to
                 any Loan Paper, dated the date hereof, executed by the
                 Secretary or comparable Authorized Officer of each Credit
                 Party;

                 (ix)     copies of resolutions or comparable authorizations
                 approving the Loan Papers and authorizing the transactions
                 contemplated by this Agreement and the other Loan Papers, duly
                 adopted by the Board of Directors or comparable authority of
                 each Credit Party accompanied by certificates of the Secretary
                 or comparable officer of Borrower that such copies are true
                 and correct copies of resolutions duly adopted at a meeting of
                 or (if permitted by applicable Law and, if required by such
                 Law, by the Bylaws or other charter documents of such Credit
                 Party) by the unanimous written consent of the Board of
                 Directors of each Credit Party, and that such resolutions
                 constitute all the resolutions adopted with respect to such
                 transactions, have not been amended, modified, or revoked in
                 any respect, and are in full force and effect as of the date
                 hereof;

                 (x)      an opinion of Jenkens & Gilchrist, P.C., special
                 counsel for Borrower dated the date hereof, favorably opining
                 as to the enforceability of each of the Loan Papers and
                 otherwise in form and substance satisfactory to Administrative
                 Agent and Banks;

                 (xi)     an opinion of Burnet, Duckworth & Palmer, special
                 Canadian counsel for  Parent, favorably opining as to the
                 enforceability of the Facility Guaranty and the Parent Pledge
                 Agreement executed by Parent and otherwise in form and
                 substance satisfactory to Administrative Agent and Banks;

                 (xii)    an opinion of Gardere & Wynne, L.L.P., special
                 counsel for Administrative Agent, dated the date hereof in
                 form and substance satisfactory to Administrative Agent;

                 (xiii)   a certificate signed by an Authorized Officer of
                 Borrower stating that (a) the representations and warranties
                 contained in this Agreement and the other Loan Papers are true
                 and correct in all respects, and (b) no Default or Event of
                 Default has occurred and is continuing, and (c) all conditions
                 set forth in this Section 6.1 and Section 6.2 have been
                 satisfied;





CREDIT AGREEMENT                                        PAGE 30
<PAGE>   37
                 (xiv)    a Certificate of Ownership Interests signed by an
                 Authorized Officer of Borrower in the form of Exhibit H
                 attached hereto;

                 (xv)     a report or reports in form, scope and detail
                 acceptable to Agent from environmental engineering firms
                 acceptable to Administrative Agent setting forth the results
                 of a  current phase I environmental review of the Chevron
                 Properties, which report(s) shall not reflect the existence of
                 facts or circumstances which would constitute a material
                 violation of any Applicable Environmental Law or which are
                 likely to result in a material liability to any Credit Party;

                 (xvi)    Certificates from Borrower's insurance broker setting
                 forth the insurance maintained by Borrower, stating that such
                 insurance is in full force and effect, that all premiums due
                 have been paid and stating that such insurance is adequate and
                 complies with the requirements of Section 8.6; and

                 (xvii)   the Amendment to Existing Mortgages duly executed and
                 delivered by Borrower.

         (b)     Title Review.  Administrative Agent or its counsel shall have
completed a review of title to the Chevron Properties and such review shall not
have revealed any condition or circumstance which would reflect that the
representations and warranties contained in Section 7.9 hereof are inaccurate
in any respect except with respect to the Rejected Chevron Properties.

         (c)     Completion of Chevron Acquisition.  Borrower shall have
completed (or simultaneously with the funding of the initial Borrowing
hereunder, Borrower shall complete) the Chevron Acquisition substantially in
accordance with the Chevron Acquisition Agreement as in effect on the date
hereof, and as a result thereof Borrower shall have acquired, or simultaneously
with the funding of such Borrowing Borrower shall acquire, good and defensible
title to all the Chevron Properties, free and clear of all Liens except
Permitted Encumbrances, with the exception of those Chevron Properties which
Borrower elects not to purchase due to title or environmental defects.  In the
event Borrower elects not to purchase certain Chevron Properties as a result of
such environmental or title defects, it shall deliver a written notice of such
election to Administrative Agent (prior to the Closing Date), specifying the
Chevron Properties which it has elected not to purchase (the "Rejected Chevron
Properties") and the Recognized Value of each such property.  If such
Recognized Value is greater than $5,000,000 (in the aggregate), Required Banks
shall have the right to lower the initial Borrowing Base and Conforming
Borrowing Base (prior to or subsequent to the Closing Date) as provided in
Section 4.6.

         (d)     No Material Adverse Change.  In the sole discretion of each
Bank, no Material Adverse Change shall have occurred.

         (e)     No Legal Prohibition.  The transactions contemplated by this
Agreement  shall be permitted by applicable Law and regulation and shall not
subject any Agent or any Bank to any material adverse change in its assets,
liabilities, financial condition, operations or prospects or subject any Credit
Party to a Material Adverse Change.





CREDIT AGREEMENT                                        PAGE 31
<PAGE>   38
         (f)     No Litigation.  No litigation, arbitration or similar
proceeding shall be pending or threatened which calls into question the
validity or enforceability of this Agreement, the other Loan Papers, the
Chevron Acquisition Documents or the transactions contemplated hereby or
thereby.

         (g)     Closing Fees.  Borrower shall have paid to each Agent and
their Affiliates the fees to be paid on the Closing Date pursuant to separate
agreements entered into between Agents and their Affiliates and Borrower.

         (h)     Other Matters.  All matters related to this Agreement, the
other Loan Papers,  the Credit Parties, the Chevron Acquisition and the Chevron
Properties shall be acceptable to each Bank in its sole discretion, and each
Credit Party shall have delivered to Administrative Agent and each Bank such
evidence as they shall request to substantiate any matters related to this
Agreement, the other Loan Papers, the Chevron Acquisition Documents and the
Chevron Acquisition, as Administrative Agent or any Bank shall request.

         SECTION 6.2.     Conditions to Each Borrowing and each Letter of
Credit.  The obligation of each Bank to loan its Commitment Percentage of each
Borrowing and the obligation of the Agent to issue a Letter of Credit on the
date such Letter of Credit is to be issued is subject to the further
satisfaction of the following conditions:

         (a)     timely receipt by Agent of a Request for Borrowing or a
Request for Letter of Credit (as applicable);

         (b)     immediately before and after giving effect to such Borrowing
or issuance of such Letter of Credit, no Default or Event of Default shall have
occurred and be continuing and the funding of such Borrowing or the issuance of
the requested Letter of Credit (as applicable) shall not cause a Default or
Event of Default;

         (c)     the representations and warranties of Borrower contained in
this Agreement and the other Loan Papers shall be true and correct on and as of
the date of such Borrowing or issuance of such Letter of Credit (as
applicable);

         (d)     the amount of the requested Borrowing or the amount of the
requested Letter of Credit (as applicable) shall not exceed the Availability;

         (e)     no material adverse change in the business, financial
condition, operations or prospects of any of the Credit Parties shall have
occurred; and

         (f)     the funding of such Borrowing or the issuance of such Letter
of Credit (as applicable) shall be permitted by applicable Law.

         Each Borrowing and the issuance of each Letter of Credit hereunder
shall be deemed to be a representation and warranty by Borrower on the date of
such Borrowing and the date of issuance of each Letter of Credit as to the
facts specified in Sections 6.2(b) through (e).





CREDIT AGREEMENT                                        PAGE 32
<PAGE>   39
         SECTION 6.3.     Materiality of Conditions.  Each condition precedent
herein is material to the transactions contemplated herein, and time is of the
essence in respect of each thereof.


                                  ARTICLE VII

                         REPRESENTATIONS AND WARRANTIES

         Each Credit Party jointly and severally represents and warrants to
each Agent and each Bank that each of the following statements is true and
correct on the date hereof, and will be true and correct on the occasion of
each Borrowing and the issuance of each Letter of Credit:

         SECTION 7.1.     Corporate Existence and Power.  Each of the Credit
Parties, DES and TRI (a) is a corporation duly incorporated, validly existing
and in good standing under the laws of its jurisdiction of incorporation, (b)
has all corporate power and all material governmental licenses, authorizations,
consents and approvals required to carry on its businesses as now conducted and
as proposed to be conducted, and (c) is duly qualified to transact business as
a foreign corporation in each jurisdiction where a failure to be so qualified
could have a Material Adverse Effect.

         SECTION 7.2.     Limited Liability Company Existence and Power
(Marine).  Marine (a) is a limited liability company duly organized, validly
existing and in good standing under the laws of the State of Louisiana, (b) has
all limited liability company power and all material governmental licenses,
authorizations, consents and approvals required to carry on its businesses as
now conducted and as proposed to be conducted, and (c) is duly qualified to
transact business as a foreign limited liability company in each jurisdiction
where a failure to be so qualified could have a Material Adverse Effect.

         SECTION 7.3.     Credit Party and Governmental Authorization;
Contravention.  The execution, delivery and performance of this Agreement and
the other Loan Papers by each Credit Party (to the extent each Credit Party is
a party to this Agreement and such Loan Papers) are within such Credit Party's
corporate powers, when executed will be duly authorized by all necessary
corporate action, require no action by or in respect of, or filing with, any
Governmental Authority and do not contravene, or constitute a default under,
any provision of applicable Law (including, without limitation, the Margin
Regulations) or of the Articles or Certificate of Incorporation, Bylaws,
Regulations or comparable charter documents of any Credit Party or of any
agreement, judgment, injunction, order, decree or other instrument binding upon
any Credit Party or result in the creation or imposition of any Lien on any
asset of any Credit Party other than the Liens securing the Obligations.

         SECTION 7.4.     Binding Effect.  This Agreement constitutes a valid
and binding agreement of each Credit Party; the other Loan Papers when executed
and delivered in accordance with this Agreement, will constitute valid and
binding obligations of each Credit Party executing the same; and each Loan
Paper is, or when executed and delivered, will be, enforceable against each
Credit Party which executes the same in accordance with its terms except as (i)
the enforceability thereof may be limited by bankruptcy, insolvency or similar





CREDIT AGREEMENT                                        PAGE 33
<PAGE>   40
laws affecting creditors rights generally, and (ii) the availability of
equitable remedies may be limited by equitable principles of general
applicability.

         SECTION 7.5.     Financial Information.  (a) The most recent annual
audited consolidated balance sheet of Parent and the related consolidated
statements of operations and cash flows for the Fiscal Year then ended, copies
of which have been delivered to each Bank, fairly present, in conformity with
GAAP, the consolidated financial position of Parent as of the end of such
Fiscal Year and its consolidated results of operations and cash flows for such
Fiscal Year.

         (b)     The most recent quarterly unaudited consolidated balance sheet
of Parent delivered to Banks, and the related unaudited consolidated statements
of operations and cash flows for the portion of Parent's Fiscal Year then
ended, fairly present, in conformity with GAAP applied on a basis consistent
with the financial statements referred to in Section 7.5(a), the consolidated
financial position of Parent as of such date and its consolidated results of
operations and cash flows for such portion of Parent's Fiscal Year.

         (c)     Except as disclosed in writing to Banks prior to the execution
and delivery of this Agreement, since the date of Parent's most recent annual
and quarterly consolidated balance sheet and consolidated statements of
operations and cash flow delivered to Banks, there has been no material adverse
change in the assets, liabilities, financial position, results of operations or
prospects of any Credit Party.

         SECTION 7.6.     Litigation.  Except for matters disclosed on Schedule
7.6 attached hereto, there is no action, suit or proceeding pending against, or
to the knowledge of any Credit Party, threatened against or affecting any
Credit Party or any Subsidiary of any Credit Party before any Governmental
Authority in which there is a reasonable possibility of an adverse decision
which could have a Material Adverse Effect or which could in any manner draw
into question the validity of the Loan Papers or the Chevron Acquisition
Documents.

         SECTION 7.7.     ERISA.  No Credit Party nor any ERISA Affiliate of
any Credit Party maintains or has ever maintained or been obligated to
contribute to any Plan covered by Title IV of ERISA or subject to the funding
requirements of Section 412 of the Code or Section 302 of ERISA.  Each Plan
maintained by any Credit Party or any ERISA Affiliate of any Credit Party is in
compliance in all material respects with all applicable Laws.  Except in such
instances where an omission or failure would not have a Material Adverse Effect
on the business, financial condition or prospects of any Credit Party, (a) all
returns, reports and notices required to be filed with any regulatory agency
with respect to any Plan have been filed timely, and (b) no Credit Party nor
any ERISA Affiliate of any Credit Party has failed to make any contribution or
pay any amount due or owing as required by the terms of any Plan.  There are no
pending or, to the best of each Credit Party's knowledge, threatened claims,
lawsuits, investigations or actions (other than routine claims for benefits in
the ordinary course) asserted or instituted against, and no Credit Party nor
any ERISA Affiliate of any Credit Party has knowledge of any threatened
litigation or claims against, the assets of any Plan or its related trust or
against any fiduciary of a Plan with respect to the operation of such Plan that
are likely to result in liability of any Credit Party having a Material Adverse
Effect.  Except in such instances where an omission or failure would not have a
Material Adverse Effect, each Plan





CREDIT AGREEMENT                                        PAGE 34
<PAGE>   41
that is intended to be "qualified" within the meaning of section 401(a) of the
Code is, and has been during the period from its adoption to date, so
qualified, both as to form and operation and all necessary governmental
approvals, including a favorable determination as to the qualification under
the Code of such Plan and each amendment thereto, have been or will be timely
obtained.  No Credit Party nor any ERISA Affiliate of any Credit Party has
engaged in any prohibited transactions, within the meaning of section 406 of
ERISA or section 4975 of the Code, in connection with any Plan which would
result in liability of any Credit Party having a Material Adverse Effect.  No
Credit Party nor any ERISA Affiliate of any Credit Party maintains or
contributes to any Plan that provides a post-employment health benefit, other
than a benefit required under Section 601 of ERISA, or maintains or contributes
to a Plan that provides health benefits that is not fully funded except where
the failure to fully fund such Plan would not have a Material Adverse Effect.
No Credit Party nor any ERISA Affiliate of any Credit Party maintains, has
established or has ever participated in a multiple employer welfare benefit
arrangement within the meaning of section 3(40)(A) of ERISA.

         SECTION 7.8.     Taxes and Filing of Tax Returns.  Each Credit Party,
and each Subsidiary of each Credit Party, has filed all tax returns required to
have been filed and has paid all Taxes shown to be due and payable on such
returns, including interest and penalties, and all other Taxes which are
payable by such party, to the extent the same have become due and payable,
other than Taxes with respect to which a failure to pay would not have a
Material Adverse Effect.  No Credit Party knows of any proposed material Tax
assessment against it or any Subsidiary of any Credit Party and all Tax
liabilities of each Credit Party and each Subsidiary of each Credit Party are
adequately provided for.  Except as disclosed in writing to Banks prior to the
date hereof, no income tax liability in excess of $50,000 of any Credit Party
or any Subsidiary of any Credit Party has been asserted by the Internal Revenue
Service or other Governmental Authority for Taxes in excess of those already
paid.

         SECTION 7.9.     Ownership of Properties Generally.  Each Credit Party
has good and valid fee simple or leasehold title to all material properties and
assets purported to be owned by it, including, without limitation, all assets
reflected in the balance sheets referred to in Section 7.5 (a) and (b) and all
assets which are used by the Credit Parties in the operation of their
respective businesses, and none of such properties or assets is subject to any
Lien other than Permitted Encumbrances.

         SECTION 7.10.    Mineral Interests.  Borrower has good and defensible
title to all Mineral Interests described in the Reserve Report, including,
after giving effect to the Chevron Acquisition, the Chevron Properties
(excluding any Rejected Chevron Properties), free and clear of all Liens except
Permitted Encumbrances and Immaterial Title Deficiencies.  With the exception
of Immaterial Title Deficiencies, all such Mineral Interests are valid,
subsisting, and in full force and effect, and all rentals, royalties, and other
amounts due and payable in respect thereof have been duly paid.  Without regard
to any consent or non-consent provisions of any joint operating agreement
covering any of Borrower's Proved Mineral Interests, and with the exception of
Immaterial Title Deficiencies, Borrower's share of (a) the costs for each
Proved Mineral Interest described in the Reserve Report is not greater than the
decimal fraction set forth in the Reserve Report, before and after payout, as
the case may be, and described therein by the respective designations "working
interests", "WI", "gross working interest", "GWI", or similar terms, and (b)
production from, allocated to, or attributed to each such Proved Mineral





CREDIT AGREEMENT                                        PAGE 35
<PAGE>   42
Interest is not less than the decimal fraction set forth in the Reserve Report,
before and after payout, as the case may be, and described therein by the
designations net revenue interest, NRI, or similar terms. Except in the case of
wells which, in the aggregate, represent less than two percent (2%) of the
production from the Proved Producing Mineral Interests described in the Reserve
Report, each well drilled in respect of each Proved Producing Mineral Interest
described in the Reserve Report (y) is capable of, and is presently, producing
hydrocarbons in commercially profitable quantities, and Borrower is currently
receiving payments for its share of production, with no funds in respect of any
thereof being presently held in suspense, other than any such funds being held
in suspense pending delivery of appropriate division orders, and (z) has been
drilled, bottomed, completed, and operated in compliance with all applicable
Laws and no such well which is currently producing hydrocarbons is subject to
any penalty in production by reason of such well having produced in excess of
its allowable production.

         SECTION 7.11.    Licenses, Permits, Etc.  Except as disclosed on
Schedule 7.11 attached hereto, each Credit Party and each Subsidiary of each
Credit Party possesses such valid franchises, certificates of convenience and
necessity, operating rights, licenses, permits, consents, authorizations,
exemptions and orders of Governmental Authorities, as are necessary to carry on
its business as now conducted and as proposed to be conducted, except to the
extent a failure to obtain any such item would not have a Material Adverse
Effect.

         SECTION 7.12.    Compliance with Law.  The business and operations of
the Credit Parties and the Subsidiaries of the Credit Parties have been and are
being conducted in accordance with all applicable Laws other than violations of
Laws which do not (either individually or collectively) have a Material Adverse
Effect.

         SECTION 7.13.    Full Disclosure.  All information heretofore
furnished by each Credit Party to any Agent or any Bank for purposes of or in
connection with this Agreement, any Loan Paper or any transaction contemplated
hereby or thereby is, and all such information hereafter furnished by or on
behalf of any Credit Party to any Agent or any Bank will be, true, complete and
accurate in every material respect.  The Credit Parties have disclosed or have
caused to be disclosed to Banks in writing any and all facts (other than facts
of general public knowledge) which might reasonably be expected to materially
and adversely affect the assets, liabilities, financial condition, operations
or prospects of any Credit Party or the ability of any Credit Party to perform
its obligations under this Agreement and the other Loan Papers.

         SECTION 7.14.    Organizational Structure; Nature of Business.
Parent's sole material asset consists of one hundred percent (100%) of the
issued and outstanding capital stock of Borrower.  Parent conducts no business
and has no operations other than (a) the issuance of equity and debt securities
not prohibited pursuant to the provisions of this Agreement, (b) the ownership
of the issued and outstanding capital stock of Borrower, and (c) activities
reasonably related to the foregoing, including, without limitation, activities
necessary to comply with the reporting requirements of the Securities and
Exchange Act, and with rules and regulations of applicable securities exchanges
or which are otherwise incident to being a publicly traded company.  Borrower
owns one hundred percent (100%) of the issued and outstanding common stock in
TRI and DES and one hundred percent (100%) of the issued and outstanding
limited liability company interests in Marine.  Borrower has no Subsidiaries
other





CREDIT AGREEMENT                                        PAGE 36
<PAGE>   43
than Marine, DES and TRI.  Neither Marine nor DES has any Subsidiary.  Borrower
is engaged only in the business of acquiring, exploring, developing and
operating Mineral Interests and the production and marketing of hydrocarbons
therefrom.  Marine is engaged only in the business of marine oil field
services.  DES is engaged only in the business of oil and gas marketing and
related services.  TRI does not have any assets, operations, liabilities,
employees or contractual relationships.  Schedule 7.14 hereto accurately
reflects (i) the jurisdiction of incorporation or organization of each Credit
Party, and each Subsidiary thereof, (ii) each jurisdiction in which each Credit
Party, and each Subsidiary thereof, is qualified to transact business as a
foreign corporation or foreign limited liability company, (iii) the authorized,
issued and outstanding stock or limited liability interests of each Credit
Party, and each Subsidiary thereof, and (iv) all outstanding warrants, options,
subscription rights, convertible securities or other rights to purchase capital
stock or limited liability interests of each Credit Party, and each Subsidiary
thereof.

         SECTION 7.15.    Environmental Matters.  Except for matters disclosed
on Schedule 8.10 hereto, no operation conducted by any Credit Party or any
Subsidiary of any Credit Party and no real or personal property now or
previously owned or leased by any Credit Party or any Subsidiary of any Credit
Party (including, without limitation, Borrower's Mineral Interests and further
including, after giving effect to the Chevron Acquisition, the Chevron
Properties (other than Rejected Chevron Properties)) and no operations
conducted thereon, and to any Credit Parties' knowledge, no operations of any
prior owner, lessee or operator of any such properties, is or has been in
violation of any Applicable Environmental Law other than violations which
neither individually nor in the aggregate will have a Material Adverse Effect.
Except for matters disclosed on Schedule 8.10 hereto, no Credit Party, nor any
Subsidiary of any Credit Party, nor any such property nor operation is the
subject of any existing, pending or, to any Credit Parties' knowledge,
threatened Environmental Complaint which could, individually or in the
aggregate, have a Material Adverse Effect.  All notices, permits, licenses, and
similar authorizations, required to be obtained or filed in connection with the
ownership of each tract of real property (including, without limitation, the
Chevron Properties (other than Rejected Chevron Properties)) or operations of
any Credit Party or any Subsidiary of any Credit Party thereon and each item of
personal property owned, leased or operated by any Credit Party or any
Subsidiary of any Credit Party, including, without limitation, notices,
licenses, permits and authorizations required in connection with any past or
present treatment, storage, disposal, or release of Hazardous Substances into
the environment, have been duly obtained or filed except to the extent the
failure to obtain or file such notices, licenses, permits and authorizations
would not have a Material Adverse Effect.  All Hazardous Substances, generated
at each tract of real property and by each item of personal property owned,
leased or operated by any Credit Party or any Subsidiary of any Credit Party
(including, without limitation, after giving effect to the Chevron Acquisition,
the Chevron Properties (other than Rejected Chevron Properties)) have been
transported, treated, and disposed of only by carriers or facilities
maintaining valid permits under RCRA and all other Applicable Environmental
Laws for the conduct of such activities except in such cases where the failure
to obtain such permits would not, individually or in the aggregate, have a
Material Adverse Effect.  Except for matters disclosed on Schedule 8.10 hereto,
there have been no Hazardous Discharges which were not in compliance with
Applicable Environmental Laws other than Hazardous Discharge which would not,
individually or in the aggregate, have a Material Adverse Effect.  Except for
matters disclosed on Schedule 8.10 hereto, no Credit Party nor any Subsidiary
of any Credit Party has any contingent liability





CREDIT AGREEMENT                                        PAGE 37
<PAGE>   44
in connection with any Hazardous Discharge which could reasonably be expected
to have a Material Adverse Effect.

         SECTION 7.16.    Burdensome Obligations.  No Credit Party, no
Subsidiary of any Credit Party, nor any of the properties of any Credit Party
or any Subsidiary of any Credit Party (including, without limitation, after
giving effect to the Chevron Acquisition, the Chevron Properties (other than
Rejected Chevron Properties)), is subject to any Law or any pending or
threatened change of Law or subject to any restriction under its articles (or
certificate) of incorporation, bylaws, regulations or comparable charter
documents or under any agreement or instrument to which any Credit Party or any
Subsidiary of any Credit Party or by which any Credit Party or any Subsidiary
of any Credit Party or any of their properties may be subject or bound, which
is so unusual or burdensome as to be likely in the foreseeable future to have a
Material Adverse Effect.  Without limiting the foregoing, no Credit Party or
any Subsidiary of any Credit Party is a party to or bound by any agreement
(other than the Loan Papers) or subject to any order of any Governmental
Authority which prohibits or restricts in any way the right of such Credit
Party or any Subsidiary of any Credit Party to make Distributions.

         SECTION 7.17.    Fiscal Year.  Parent's Fiscal Year is January 1
through December 31.

         SECTION 7.18.    No Default.  Neither a Default nor an Event of
Default has occurred or will exist after giving effect to the transactions
contemplated by this Agreement or the other Loan Papers.

         SECTION 7.19.    Government Regulation.  No Credit Party is subject to
regulation under the Public Utility Holding Company Act of 1935, the Federal
Power Act, the Interstate Commerce Act (as any of the preceding acts have been
amended), the Investment Company Act of 1940 or any other law which regulates
the incurring by such Credit Party of Debt, including, but not limited to laws
relating to common contract carriers or the sale of electricity, gas, stream,
water or other public utility services.

         SECTION 7.20.    Insider.  No Credit Party is, and no Person having
"control" (as that term is defined in 12 U.S.C. Section 375(b) or regulations
promulgated thereunder) of any Credit Party is an "executive officer",
"director" or "shareholder" of any Bank or any bank holding company of which
any Bank is a Subsidiary or of any Subsidiary of such bank holding company.

         SECTION 7.21.    Gas Balancing Agreements and Advance Payment
Contracts.  On the date of this Agreement and after giving effect to the
Chevron Acquisition, (a) there is no Material Gas Imbalance, and (b) the
aggregate amount of all Advance Payments received by Borrower under Advance
Payment Contracts which have not been satisfied by delivery of production does
not exceed $1,000,000.

         SECTION 7.22.    Chevron Acquisition Documents.  Borrower has provided
Administrative Agent and each Bank with a true and correct copy of all of the
Chevron Acquisition Documents, including all amendments and modifications
thereto.  No rights or obligations of any party to any of such Chevron
Acquisition Documents have been waived, and





CREDIT AGREEMENT                                        PAGE 38
<PAGE>   45
no party to any of such Chevron Acquisition Documents is in default of its
obligations thereunder.  Each of such Chevron Acquisition Documents is a valid,
binding and enforceable obligation of the parties thereto in accordance with
its terms and is in full force and effect.


                                  ARTICLE VIII

                             AFFIRMATIVE COVENANTS

         Each of the Credit Parties jointly and severally covenant and agree
that, so long as any Bank has any commitment to lend or participate in Letter
of Credit Exposure hereunder or any amount payable under any Note remains
unpaid or any Letter of Credit remains outstanding:

         SECTION 8.1.     Information.  The Credit Parties will deliver, or
cause to be delivered, to each Bank:

         (a)     as soon as available and in any event within ninety (90) days
after the end of each Fiscal Year, consolidated balance sheets of Parent as of
the end of such Fiscal Year and the related consolidated statements of income
and statements of cash flow for such Fiscal Year, setting forth in each case in
comparative form the figures for the previous Fiscal Year, all reported by
Parent in accordance with GAAP and audited by a firm of independent public
accountants of nationally recognized standing and acceptable to Agent; to the
extent Parent's Form of 10-K filed with the Securities and Exchange Commission
for each Fiscal Year contains all information required by this Section 8.1(a),
Parent and Borrower may satisfy their obligations under this Section 8.1(a) for
each Fiscal Year by delivering to Banks a copy of such Form 10-K for such
Fiscal Year;

         (b)     (i) as soon as available and in any event within forty-five
(45) days after the end of each of the first three (3) Fiscal Quarters of each
Fiscal Year, consolidated balance sheets of Parent as of the end of such Fiscal
Quarter and the related consolidated statements of income and statements of
cash flow for such quarter and for the portion of Parent's Fiscal Year ended at
the end of such Fiscal Quarter, setting forth in each case in comparative form
the figures for the corresponding quarter and the corresponding portion of
Parent's previous Fiscal Year; to the extent Parent's Form 10-Q filed with the
Securities and Exchange Commission for each Fiscal Quarter contains all
information required by this Section 8.1(b), each Credit Party may satisfy
their obligations under this Section 8.1(b) for each Fiscal Quarter by
delivering to Banks a copy of such Form 10-Q for such Fiscal Quarter.  All
financial statements delivered pursuant to this Section 8.1(b) shall be
certified as to fairness of presentation, GAAP and consistency by a Financial
Officer of Parent;

         (c)     simultaneously with the delivery of each set of financial
statements referred to in Sections 8.1(a) and (b), a certificate of a Financial
Officer of Parent in the form of Exhibit I attached hereto, (i) setting forth
in reasonable detail the calculations required to establish whether the Credit
Parties were in compliance with the requirements of Article X on the date of
such financial statements, (ii) stating whether there exists on the date of
such certificate any Default and, if any Default then exists, setting forth the
details thereof and the action which the Credit Parties are taking or propose
to take with respect thereto, (iii) stating whether or not





CREDIT AGREEMENT                                        PAGE 39
<PAGE>   46
such financial statements fairly reflect in all material respects the results
of operations and financial condition of the Credit Parties as of the date of
the delivery of such financial statements and for the period covered thereby,
(iv) setting forth (A) whether as of such date there is a Material Gas
Imbalance and, if so, setting forth the amount of net gas imbalances under Gas
Balancing Agreements to which Borrower is a party or by which any Mineral
Interests owned by Borrower is bound, and (B) the aggregate amount of all
Advance Payments received under Advance Payment Contracts to which Borrower is
a party or by which any Mineral Interests owned by Borrower is bound which have
not been satisfied by delivery of production, if any, and (v) a summary of the
Hedge Transactions to which each Credit Party is a party on such date;

         (d)     promptly upon the mailing thereof to the stockholders of
Parent generally, copies of all financial statements, reports and proxy
statements so mailed;

         (e)     promptly upon the filing thereof, copies of all final
registration statements post effective amendments thereto and annual, quarterly
or special reports which Parent shall have filed with the Securities and
Exchange Commission; provided, that Parent must deliver, or cause to be
delivered, any annual reports which Parent shall have filed with the Securities
and Exchange Commission, within ninety (90) days after the end of each Fiscal
Year of Parent, and any quarterly reports which Parent shall have filed with
the Securities and Exchange Commission, within forty-five (45) days after the
end of each of the first three (3) Fiscal Quarters of each Fiscal Year of
Borrower;

         (f)     promptly upon receipt of same, any notice or other information
received by any Credit Party indicating any potential, actual or alleged (i)
non-compliance with or violation of the requirements of any Applicable
Environmental Law which could result in liability to any Credit Party for
fines, clean up or any other remediation obligations or any other liability in
excess of $500,000 in the aggregate; (ii) threatened Hazardous Discharge which
Hazardous Discharge would impose on any Credit Party a duty to report to a
Governmental Authority or to pay cleanup costs or to take remedial action under
any Applicable Environmental Law which could result in liability to any Credit
Party for fines, clean up and other remediation obligations or any other
liability in excess of $500,000 in the aggregate; or (iii) the existence of any
Lien arising under any Applicable Environmental Law securing any obligation to
pay fines, clean up or other remediation costs or any other liability in excess
of $500,000 in the aggregate.  Without limiting the foregoing, each Credit
Party shall provide to Banks promptly upon receipt of same by any Credit Party
copies of all environmental consultants or engineers reports received by any
Credit Party which would render the representation and warranty contained in
Section 7.15 untrue or inaccurate in any respect;

         (g)     In the event any notification is provided to any Bank or
Administrative Agent pursuant to Section 8.1(f) hereof or any Agent or any Bank
otherwise learns of any event or condition under which any such notice would be
required, then, upon request of Required Banks, Borrower shall within thirty
(30) days of such request, cause to be furnished to Administrative Agent and
each Bank a report by an environmental consulting firm acceptable to
Administrative Agent and Required Banks, stating that a review of such event,
condition or circumstance has been undertaken (the scope of which shall be
acceptable to Administrative Agent and Required Banks) and detailing the
findings, conclusions and recommendations of





CREDIT AGREEMENT                                        PAGE 40
<PAGE>   47
such consultant.  The Credit Parties shall bear all expenses and costs
associated with such review and updates thereof;

         (h)     immediately upon any Authorized Officer becoming aware of the
occurrence of any Default, a certificate of an Authorized Officer setting forth
the details thereof and the action which Borrower is taking or proposes to take
with respect thereto;

         (i)     no later than February 28, and August 31 of each year, reports
of production volumes, revenue, expenses and product prices for all oil and gas
properties owned by Borrower with a Recognized Value of $500,000 or more for
the periods of six (6) months ending the preceding December 31, and June 30,
respectively.  Such reports shall be prepared on an accrual basis and shall be
reported on a field by field basis;

         (j)     promptly notify Banks of any material adverse change in the
assets, liabilities, financial condition, operations or prospects of any Credit
Party;

         (k)     promptly notify Banks of any material litigation involving any
Credit Party; and

         (l)     from time to time such additional information regarding the
financial position or business of Borrower and its Subsidiaries as
Administrative Agent, at the request of any Bank, may reasonably request.

         SECTION 8.2.     Business of Credit Parties.  The sole business of
Parent shall continue to be (a) the issuance of equity and debt securities not
prohibited pursuant to the provisions of this Agreement, (b) the ownership of
the issued and outstanding capital stock of Borrower, and (c) activities
reasonably related to the foregoing, including, without limitation, activities
necessary to comply with the reporting requirements of the Securities and
Exchange Act, and with rules and regulations of applicable securities exchanges
or which are otherwise incident to being a publicly traded company.  The sole
business of Borrower will continue to be (a) the acquisition, exploration,
development and operation of Mineral Interests and the production and marketing
of Hydrocarbons therefrom, and (b) the ownership of one hundred percent (100%)
of the issued and outstanding limited liability company interests of Marine and
one hundred percent (100%) of the issued and outstanding common stock of DES.
The sole business of Marine will continue to be marine oil field services.  The
sole business of DES will continue to be oil and gas marketing and related
services.  TRI will remain a shell corporation with no assets or operations.

         SECTION 8.3.     Maintenance of Existence.  Each of Parent and
Borrower shall, and shall cause each of its Subsidiaries to, at all times (a)
maintain its corporate or limited liability company existence in its state of
incorporation or organization, and (b) maintain its good standing and
qualification to transact business in all jurisdictions where the failure to
maintain good standing or qualification to transact business could have a
Material Adverse Effect.  Notwithstanding the foregoing, TRI may dissolve at
anytime.

         SECTION 8.4.     Title Data.  In addition to the title information
required by Sections 5.1 and 6.1(c) hereof, Parent and Borrower shall, upon the
request of Required Banks, cause to be delivered to Administrative Agent such
title, opinions and other information regarding





CREDIT AGREEMENT                                        PAGE 41
<PAGE>   48
title to Mineral Interests owned by Borrower as are appropriate to determine
the status thereof; provided, however, that the Banks may not require the
Credit Parties to furnish title opinions (except pursuant to Sections 5.1 and
6.1(c)) unless (a) an Event of Default shall have occurred and be continuing,
or (b) the Required Banks have reason to believe that there is a defect in or
encumbrance upon Borrower's title to such Mineral Interests that is not a
Permitted Encumbrance.

         SECTION 8.5.     Right of Inspection.  Each Credit Party will permit,
and will cause each of its Subsidiaries to permit, any officer, employee or
agent of Administrative Agent or  of any Bank to visit and inspect any of the
assets of any Credit Party or any Subsidiary of any Credit Party, examine each
Credit Party's and any such Subsidiary's books of record and accounts, take
copies and extracts therefrom, and discuss the affairs, finances and accounts
of each Credit Party and each Subsidiary of each Credit Party with such Credit
Party's and any such Subsidiary's officers, accountants and auditors, all at
such reasonable times and as often as Administrative Agent or any Bank may
desire, all at the expense of the Credit Parties.

         SECTION 8.6.     Maintenance of Insurance.  Each Credit Party and each
Subsidiary of the Credit Parties will at all times maintain or cause to be
maintained insurance covering such risks as are customarily carried by
businesses similarly situated, including, without limitation, the following:
(a) workmen's compensation insurance; (b) employer's liability insurance; (c)
comprehensive general public liability and property damage insurance; (d)
insurance against (other than losses or damage to property owned by Borrower
which is self insured) losses customarily insured against as a result of damage
by fire, lightning, hail, tornado, explosion and other similar risk; and (e)
comprehensive automobile liability insurance.  All loss payable clauses or
provisions in all policies of insurance maintained by the Credit Parties and
each Subsidiary of the Credit Parties pursuant to this Section 8.6 shall be
endorsed in favor of and made payable to Administrative Agent for the ratable
benefit of Banks, as their interests may appear.  Administrative Agent shall
have the right, for the ratable benefit of the Banks, to collect, and Parent
and Borrower hereby assign to Administrative Agent for the ratable benefit of
Banks (and hereby agree to cause each Subsidiary of the Credit Parties to
assign), any and all monies that may become payable under any such policies of
insurance by reason of damage, loss or destruction of any of property which
stands as security for the Obligations or any part thereof, and Administrative
Agent may, at its election, either apply for the ratable benefit of Banks all
or any part of the sums so collected toward payment of the Obligations, whether
or not such Obligations are then due and payable, in such manner as
Administrative Agent may elect or release same to the applicable Credit Party.

         SECTION 8.7.     Payment of Taxes and Claims.  Each Credit Party will,
and will cause each Subsidiary of the Credit Parties to, pay (a) all Taxes
imposed upon it or any of its assets or with respect to any of its franchises,
business, income or profits before any material penalty or interest accrues
thereon and (b) all material claims (including, without limitation, claims for
labor, services, materials and supplies) for sums which have become due and
payable and which by law have or might become a Lien (other than a Permitted
Encumbrance) on any of its assets; provided, however, no payment of Taxes or
claims shall be required if (i) the amount, applicability or validity thereof
is currently being contested in good faith by appropriate action promptly
initiated and diligently conducted in accordance with good business practices
and no material part of the property or assets of any Credit Party and no part
of the





CREDIT AGREEMENT                                        PAGE 42
<PAGE>   49
assets of any Subsidiary of any Credit Party which would be material to any
Credit Party is subject to any pending levy or execution, (ii) the Credit
Parties, and any Subsidiary of any Credit Party, as and to the extent required
in accordance with GAAP, shall have set aside on their books reserves
(segregated to the extent required by GAAP) deemed by them to be adequate with
respect thereto, and (iii) the Credit Parties have notified Administrative
Agent of such circumstances, in detail satisfactory to Administrative Agent.

         SECTION 8.8.     Compliance with Laws and Documents.  Each Credit
Party will, and will cause each Subsidiary of the Credit Parties to, comply
with all Laws, their respective certificates (or articles) of incorporation,
bylaws, regulations and similar organizational documents and all Material
Agreements to which any Credit Party and any Subsidiary of any Credit Party is
a party, if a violation, alone or when combined with all other such violations,
could have a Material Adverse Effect.

         SECTION 8.9.     Operation of Properties and Equipment.  (a) Borrower
will maintain, develop and operate its Mineral Interests in a good and
workmanlike manner, and observe and comply with all of the terms and
provisions, express or implied, of all oil and gas leases relating to such
Mineral Interests so long as such Mineral Interests are capable of producing
hydrocarbons and accompanying elements in paying quantities, except where such
failure to comply would not have a Material Adverse Effect.

         (b)     Borrower will comply in all respects with all contracts and
agreements applicable to or relating to its Mineral Interest or the production
and sale of hydrocarbons and accompanying elements therefrom, except to the
extent a failure to so comply would not have a Material Adverse Effect.

         (c)     Borrower will at all times maintain, preserve and keep all
operating equipment used with respect to its Mineral Interests of Borrower in
proper repair, working order and condition, and make all necessary or
appropriate repairs, renewals, replacements, additions and improvements thereto
so that the efficiency of such operating equipment shall at all times be
properly preserved and maintained, except where such failure to comply would
not have a Material Adverse Effect; provided further that no item of operating
equipment need be so repaired, renewed, replaced, added to or improved, if
Borrower shall in good faith determine that such action is not necessary or
desirable for the continued efficient and profitable operation of the business
of Borrower.

         SECTION 8.10.    Environmental Law Compliance.  Except to the extent a
failure to comply would not have a Material Adverse Effect, each Credit Party
will, and will cause each Subsidiary of the Credit Parties to, comply with all
Applicable Environmental Laws, including, without limitation, (a) all
licensing, permitting, notification and similar requirements of Applicable
Environmental Laws, and (b) all provisions of all Applicable Environmental Laws
regarding storage, discharge, release, transportation, treatment and disposal
of Hazardous Substances.  The Credit Parties will, and will cause each
Subsidiary of the Credit Parties to, promptly pay and discharge when due all
legal debts, claims, liabilities and obligations with respect to any clean-up
or remediation measures necessary to comply with Applicable Environmental Laws.
Without limiting the foregoing, on or before the dates specified therein,
Borrower will comply with the Environmental Compliance Schedule attached hereto
as Schedule 8.10.





CREDIT AGREEMENT                                        PAGE 43
<PAGE>   50
         SECTION 8.11.    ERISA Reporting Requirements.  The Credit Parties
shall furnish, or cause to be furnished, to Administrative Agent:

         (a)     Promptly and in any event (i) within thirty (30) days after
any Credit Party or any ERISA Affiliate receives notice from any regulatory
agency of the commencement of an audit, investigation or similar proceeding
with respect to a Plan, and (ii) within ten (10) days after any Credit Party or
any ERISA Affiliate contacts the Internal Revenue Service for the purpose of
participation in a closing agreement or any voluntary resolution program with
respect to a Plan which could have a Material Adverse Effect or knows or has
reason to know that any event with respect to any Plan of any Credit Party or
any ERISA Affiliate has occurred that is reasonably believed by a Credit Party
to potentially have a Material Adverse Effect;

         (b)     Promptly and in any event within thirty (30) days after the
receipt by any Credit Party of a request therefor by a Bank, copies of any
annual and other report (including Schedule B thereto) with respect to a Plan
filed by Borrower or any ERISA Affiliate with the United States Department of
Labor, the Internal Revenue Service or the PBGC;

         (c)     Notification within thirty (30) days of the effective date
thereof of any material increases in the benefits, or material change in the
funding method, of any existing Plan which is not a multiemployer plan (as
defined in section 4001(a)(3) of ERISA), or the establishment of any material
new Plans, or the commencement of contributions to any Plan to which any Credit
Party or any ERISA Affiliate was not previously contributing; and

         (d)     Promptly after receipt of written notice of commencement
thereof, notice of all (i) claims made by participants or beneficiaries with
respect to any Plan and (ii) actions, suits and proceedings before any court or
governmental department, commission, board, bureau, agency or instrumentality,
domestic or foreign, affecting any Credit Party or any ERISA Affiliate with
respect to any Plan, except those which, in the aggregate, if adversely
determined could not have a Material Adverse Effect.

         SECTION 8.12.    Additional Documents.  The Credit Parties shall, and
shall cause each Subsidiary of the Credit Parties to, cure promptly any defects
in the creation and issuance of each Note, and the execution and delivery of
this Agreement and the other Loan Papers and, at the Credit Parties' expense,
the Credit Parties shall promptly and duly execute and deliver to each Bank,
upon reasonable request, all such other and further documents, agreements and
instruments in compliance with or accomplishment of the covenants and
agreements of the Credit Parties in this Agreement and the other Loan Papers as
may be reasonably necessary or appropriate in connection therewith.

         SECTION 8.13.    Environmental Review.  Borrower shall deliver to
Administrative Agent prior to the completion by Borrower or any of its
Subsidiaries of any material acquisition of Mineral Interests or related
assets, other than an acquisition of additional interests in Mineral Interests
in which Borrower or any of its Subsidiaries previously held an interest, a
report or reports obtained by Borrower in the course of such acquisition, which
report or reports shall set forth the results of a Phase I environmental review
of such Mineral Interests and related assets.  Borrower shall deliver to
Administrative Agent a report or reports related to any material acquisition by
Borrower or any of its Subsidiaries of Mineral Interests





CREDIT AGREEMENT                                        PAGE 44
<PAGE>   51
or related assets, other than an acquisition of additional interests in Mineral
Interest in which Borrower or any of its Subsidiaries previously held an
interest, as requested by Administrative Agent or Required Banks in writing,
which report shall be delivered within forty-five (45) days of Administrative
Agent's or Required Banks' written request and shall be in form, scope and
detail acceptable to Administrative Agent from environmental engineering firms
acceptable to Administrative Agent, which report or reports shall set forth the
results of a Phase I environmental review of such Mineral Interests and related
assets.  All of the reports delivered to Administrative Agent pursuant to this
Section 8.13 shall not reflect the existence of facts or circumstances which
would constitute a material violation of any Applicable Environmental Law or
which are likely to result in a material liability to any Credit Party.


                                   ARTICLE IX

                               NEGATIVE COVENANTS

         Each of the Credit Parties agrees that, so long as any Bank has any
commitment to lend or participate in Letter of Credit Exposure  hereunder or
any amount payable under any Note remains unpaid or any Letter of Credit
remains outstanding:

         SECTION 9.1.  Incurrence of Debt.  The Credit Parties will not, nor
will the Credit Parties permit any of their Subsidiaries to, incur, become or
remain liable for any Debt other than (a) the Obligations, (b) Permitted
Subordinate Debt, and (c) other unsecured Debt in an aggregate amount
outstanding at any time not to exceed $10,000,000.

         SECTION 9.2.  Restricted Payments.  The Credit Parties will not, nor
will the Credit Parties permit any of their Subsidiaries to, directly or
indirectly, declare or pay, or incur any liability to declare or pay, any
Restricted Payment; provided, that (a) any Subsidiary of Borrower may make
Distributions to Borrower, and (b) so long as (i) no Default or Borrowing Base
Deficiency exists on the date any such Distribution is declared or paid and no
Default or Event of Default would result therefrom, and (ii) the Borrowing Base
does not exceed the Conforming Borrowing Base on the date such Restricted
Payments are declared or paid, in addition to Distributions permitted under the
preceding clause (a), the Credit Parties may make Restricted Payments up to
$5,000,000 in the aggregate in any Fiscal Year.

         SECTION 9.3.  Negative Pledge.  The Credit Parties will not, nor will
the Credit Parties permit any of their Subsidiaries to, create, assume or
suffer to exist any Lien on any asset of any Credit Party, or any Subsidiary of
any Credit Party, other than Permitted Encumbrances.  The Credit Parties will
not, nor will the Credit Parties permit any of their Subsidiaries to, enter
into or become bound by any agreement (other than this Agreement) that
prohibits or otherwise restricts the right of any Credit Party, or any
Subsidiary of any Credit Party, to create, assume or suffer to exist any Lien
on any Credit Party's, or any of their Subsidiaries', assets in favor of
Administrative Agent.

         SECTION 9.4.  Consolidations and Mergers.  The Credit Parties will
not, nor will the Credit Parties permit any of their Subsidiaries to,
consolidate or merge with or into any other Person; provided, that so long as
no Default or Event of Default exists or will result (a) Borrower may merge or
consolidate with another Person so long as Borrower is the surviving





CREDIT AGREEMENT                                        PAGE 45
<PAGE>   52
corporation and continues to be a wholly owned Subsidiary of Parent, and (b)
any wholly owned Subsidiary of Borrower may merge or consolidate with any other
Person so long as a wholly owned Subsidiary of Borrower is the surviving
corporation.

         SECTION 9.5.  Asset Dispositions.  The Credit Parties will not, nor
will the Credit Parties permit any of their Subsidiaries to, sell, lease,
transfer, abandon or otherwise dispose of any asset other than (a) the sale in
the ordinary course of business of Hydrocarbons produced from Borrower's
Mineral Interests, (b) the sale, lease, transfer, abandonment or other
disposition of other assets, provided that the aggregate value of all assets,
sold, leased, transferred or disposed of pursuant to this clause (b) in any
period between Scheduled Determinations shall not exceed five percent (5%) of
the Conforming Borrowing Base then in effect (for purposes of this clause (b)
the Closing Date will be deemed to be a Scheduled Determination), and (c) the
sale, lease, transfer, abandonment or the disposition of Unproved Reserves.  In
no event will any Credit Party sell, transfer or dispose of any capital stock
or other equity interest, in any Subsidiary of such Credit Party nor will
Borrower or any of its Subsidiaries issue or sell any capital stock or other
equity interest or any option, warrant or other right to acquire such capital
stock or equity interest or security convertible into such capital stock or
equity interest to any Person other than the Credit Party which is the direct
parent of such issuer on the Closing Date.

         SECTION 9.6.  Amendments to Organizational Documents.  The Credit
Parties will not, nor will the Credit Parties permit any of their Subsidiaries
to, enter into or permit any modification or amendment of, or waive any
material right or obligation of any Person under, its certificate or articles
of incorporation, bylaws, regulations or other organizational documents other
than amendments, modifications and waivers which will not, individually or in
the aggregate, have a Material Adverse Effect.

         SECTION 9.7.  Use of  Proceeds.  The proceeds of Borrowings will not
be used for any purpose other than (a) working capital, (b) to finance the
acquisition, exploration and development of Mineral Interests, including but
not limited to the Chevron Acquisition, and (c) for general corporate purposes.
None of such proceeds (including, without limitation, proceeds of Letters of
Credit issued hereunder) will be used, directly or indirectly, for the purpose,
whether immediate, incidental or ultimate, of purchasing or carrying any Margin
Stock, and none of such proceeds will be used in violation of applicable Law
(including, without limitation, the Margin Regulations).  Letters of Credit
will be issued hereunder only for the purpose of securing bids, tenders, bonds,
contracts and other obligations entered into in the ordinary course of
Borrower's business.   Without limiting the foregoing, no Letters of Credit
will be issued hereunder for the purpose of or providing credit enhancement
with respect to any Debt or equity security of any Credit Party or any
Subsidiary of any Credit Party or to secure any Credit Party's obligations with
respect to Hedge Transactions other than Hedge Transactions with a Bank or an
Affiliate of such Bank.

         SECTION 9.8.  Investments.  The Credit Parties will not, nor will the
Credit Parties permit any of their Subsidiaries to, directly or indirectly,
make or have outstanding any Investment other than Permitted Investments.

         SECTION 9.9.  Transactions with Affiliates.  The Credit Parties will
not, nor will the Credit Parties permit any of their Subsidiaries to, engage in
any transaction with an Affiliate





CREDIT AGREEMENT                                        PAGE 46
<PAGE>   53
unless such transaction is as favorable to such party as could be obtained in
an arm's length transaction with an unaffiliated Person in accordance with
prevailing industry customs and practices.

         SECTION 9.10.  ERISA.  Except in such instances where an omission or
failure would not have a Material Adverse Effect, the Credit Parties will not,
nor will the Credit Parties permit any of their Subsidiaries to (a) take any
action or fail to take any action which would result in a violation of ERISA,
the Code or other laws applicable to the Plans maintained or contributed to by
it or any ERISA Affiliate, or (b) modify the term of, or the funding
obligations or contribution requirements under any existing Plan, establish a
new Plan, or become obligated or incur any liability under a Plan that is not
maintained or contributed to by a Credit Party or any ERISA Affiliate as of the
Closing Date.

         SECTION 9.11.  Hedge Transactions.  The Credit Parties will not, nor
will the Credit Parties permit any of their Subsidiaries to, enter into any
Hedge Transactions which would cause the amount of hydrocarbons which are the
subject of Hedge Transactions in existence at such time to exceed seventy five
percent (75%) of Borrower's anticipated production from Proved Producing
Mineral Interests during the term of such existing Hedge Transactions.

         SECTION 9.12.  Fiscal Year.  Parent shall not change its fiscal year.

         SECTION 9.13.  Change in Business.  The Credit Parties will not, nor
will the Credit Parties permit any of their Subsidiaries to, engage in any
business other than the businesses engaged in by such parties on the date
hereof as described in Section 7.14 hereof.


                                   ARTICLE X

                              FINANCIAL COVENANTS

         Each of the Credit Parties agrees that so long as any Bank has any
commitment to lend or participate in Letter of Credit Exposure  hereunder or
any amount payable under any Note remains unpaid or any Letter of Credit
remains outstanding:

         SECTION 10.1.  Current Ratio of Parent.  The Credit Parties will not
permit Parent's ratio of Consolidated Current Assets to its Consolidated
Current Liabilities as of the end of any Fiscal Quarter to be less than 1.0 to
1.0.

         SECTION 10.2.  Minimum Consolidated Tangible Net Worth.  The Credit
Parties will not permit Parents' Consolidated Tangible Net Worth to be less
than the Required Consolidated Tangible Net Worth at any time.

         SECTION 10.3.  Consolidated EBITDA to Consolidated Net Interest
Expense.  The Credit Parties will not permit Parent's ratio of Consolidated
EBITDA to Consolidated Net Interest Expense to be less than 2.5 to 1.0 (i) for
any period commencing on January 1, 1998 and ending on the last day of each
Fiscal Quarter thereafter until and including September 30, 1998; and (ii) for
any period of four (4) consecutive Fiscal Quarters ending on or after December
31, 1998.





CREDIT AGREEMENT                                        PAGE 47
<PAGE>   54
                                   ARTICLE XI

                                    DEFAULTS

         SECTION 11.1.  Events of Default.  If one or more of the following
events (collectively "Events of Default" and individually an "Event of
Default") shall have occurred and be continuing:

         (a)     Borrower shall fail to pay when due any principal on any Note;

         (b)     Borrower shall fail to pay when due accrued interest on any
Note or any fees or any other amount payable hereunder and such failure shall
continue for a period of three (3) days following the due date;

         (c)     any Credit Party shall fail to observe or perform any covenant
or agreement contained in Article IX or Article X of this Agreement;

         (d)     any Credit Party or any Subsidiary of any Credit Party shall
fail to observe or perform any covenant or agreement contained in this
Agreement or the other Loan Papers (other than those referenced in Sections
11.1(a), (b) and (c)) and such failure continues for a period of thirty (30)
days after the earlier of (i) the date any Authorized Officer of any Credit
Party acquires knowledge of such failure, or (ii) written notice of such
failure has been given to any Credit Party by Administrative Agent or any Bank;

         (e)     any representation, warranty, certification or statement made
or deemed to have been made by any Credit Party or any Subsidiary of any Credit
Party in any certificate, financial statement or other document delivered
pursuant to this Agreement shall prove to have been incorrect in any material
respect when made;

         (f)     any Credit Party or any Subsidiary of any Credit Party shall
fail to make any payment when due on any Debt of such Person in a principal
amount equal to or greater than $500,000 or any other event or condition shall
occur which (i) results in the acceleration of the maturity of any such Debt,
or (ii) entitles the holder of such Debt to accelerate the maturity thereof;

         (g)     any Credit Party or any Subsidiary of any Credit Party shall
commence a voluntary case or other proceeding seeking liquidation,
reorganization or other relief with respect to itself or its debts under any
bankruptcy, insolvency or other similar law now or hereafter in effect or
seeking the appointment of a trustee, receiver, liquidator, custodian or other
similar official of it or any substantial part of its property, or shall
consent to any such relief or to the appointment of or taking possession by any
such official in an involuntary case or other proceeding commenced against it,
or shall make a general assignment for the benefit of creditors, or shall fail
generally to pay its debts as they become due, or shall take any corporate
action to authorize any of the foregoing;

         (h)     an involuntary case or other proceeding shall be commenced
against any Credit Party or any Subsidiary of any Credit Party seeking
liquidation, reorganization or other relief





CREDIT AGREEMENT                                        PAGE 48
<PAGE>   55
with respect to it or its debts under any bankruptcy, insolvency or other
similar law now or hereafter in effect or seeking the appointment of a trustee,
receiver, liquidator, custodian or other similar official of it or any
substantial part of its property, and such involuntary case or other proceeding
shall remain undismissed and unstayed for a period of sixty (60) days; or an
order for relief shall be entered against any Credit Party or any Subsidiary of
any Credit Party under the federal bankruptcy Laws as now or hereafter in
effect;

         (i)     one (1) or more final judgments or orders for the payment of
money aggregating in excess of $500,000 shall be rendered against any Credit
Party or any Subsidiary of any Credit Party and such judgment or order shall
continue unsatisfied and unstayed for thirty (30) days;

         (j)     any event occurs with respect to any Plan or Plans pursuant to
which any Credit Party and/or any ERISA Affiliate incur a liability due and
owing at the time of such event, without existing funding therefor, for benefit
payments under such Plan or Plans in excess of $500,000; or (ii) any Credit
Party, any ERISA Affiliate, or any other "party-in-interest" or "disqualified
person", as such terms are defined in section 3(14) of ERISA and section
4975(e)(2) of the Code, shall engage in transactions which in the aggregate
results in a direct or indirect liability to any Credit Party or any ERISA
Affiliate in excess of $500,000 under section 409 or 502 of ERISA or section
4975 of the Code which either (i) results in a Lien on any Credit Party's
assets which is not a Permitted Encumbrance, or (ii) continues unsatisfied for
a period of thirty (30) days after any Authorized Officer of any Credit Party
first acquires knowledge of such liability;

         (k)      as of any date (i) Borrower shall cease to be a wholly owned
Subsidiary of Parent, or (ii) any Person or group (as defined in Section
13(d)(3) or 14(d)(2) of the Securities Exchange Act of 1934) other than the
Texas Pacific Group shall become the direct or indirect beneficial owner (as
defined in Rule 13d-3 under the Securities Exchange Act of 1934) of more than
30% of the total voting power of all classes of capital stock then outstanding
of Parent entitled (without regard to the occurrence of any contingency) to
vote in elections of directors of Parent; or

         (l)     this Agreement or any other Loan Paper shall cease to be in
full force and effect or shall be declared null and void or the validity or
enforceability thereof shall be contested or challenged by any Credit Party, or
any Credit Party shall deny that it has any further liability or obligation
under any of the Loan Papers, or any Lien created by the Loan Papers shall for
any reason (other than the release thereof in accordance with the Loan Papers)
cease to be a valid, first priority, perfected Lien upon any of the Proved
Mineral Interests purported to be covered thereby;

then, and in every such event, Administrative Agent shall without presentment,
notice or demand (unless expressly provided for herein) of any kind (including,
without limitation, notice of intention to accelerate and acceleration), all of
which are hereby waived, (a) if requested by the Required Banks, terminate the
Commitments and they shall thereupon terminate, and (b) if requested by the
Required Banks, take such other actions as may be permitted by the Loan Papers
including, declaring the Notes (together with accrued interest thereon) to be,
and the Notes shall thereupon become, immediately due and payable; provided
that (c) in the case of any of the Events of Default specified in Sections
11.1(g) or (h), without any notice to any





CREDIT AGREEMENT                                        PAGE 49
<PAGE>   56
Credit Party or any other act by Administrative Agent or Banks, the Commitments
shall thereupon terminate and the Notes (together with accrued interest
thereon) shall become immediately due and payable.


                                  ARTICLE XII

                                     AGENTS

         SECTION 12.1.  Appointment, Powers, and Immunities.  Each Bank hereby
irrevocably appoints and authorizes each Agent to act as its agent under this
Agreement and the other Loan Papers with such powers and discretion as are
specifically delegated to each Agent by the terms of this Agreement and the
other Loan Papers, together with such other powers as are reasonably incidental
thereto.  Each Agent (which term as used in this sentence and in Section 12.5
and the first sentence of Section 12.6 hereof shall include its affiliates and
its own and its affiliates' officers, directors, employees, and agents):  (a)
shall not have any duties or responsibilities except those expressly set forth
in this Agreement and shall not be a trustee or fiduciary for any Bank; (b)
shall not be responsible to the Banks for any recital, statement,
representation, or warranty (whether written or oral) made in or in connection
with any Loan Paper or any certificate or other document referred to or
provided for in, or received by any of them under, any Loan Paper, or for the
value, validity, effectiveness, genuineness, enforceability, or sufficiency of
any Loan Paper, or any other document referred to or provided for therein or
for any failure by any Credit Party or any other Person to perform any of its
obligations thereunder; (c) shall not be responsible for or have any duty to
ascertain, inquire into, or verify the performance or observance of any
covenants or agreements by any Credit Party or the satisfaction of any
condition or to inspect the property (including the books and records) of any
Credit Party or any of its Subsidiaries or affiliates; (d) shall not be
required to initiate or conduct any litigation or collection proceedings under
any Loan Paper; and (e) shall not be responsible for any action taken or
omitted to be taken by it under or in connection with any Loan Paper, except
for its own gross negligence or willful misconduct.  Each Agent may employ
agents and attorneys- in-fact and shall not be responsible for the negligence
or misconduct of any such agents or attorneys-in-fact selected by it with
reasonable care.

         SECTION 12.2.  Reliance by Agents.  Each Agent shall be entitled to
rely upon any certification, notice, instrument, writing, or other
communication (including, without limitation, any thereof by telephone or
telecopy) believed by it to be genuine and correct and to have been signed,
sent or made by or on behalf of the proper Person or Persons, and upon advice
and statements of legal counsel (including counsel for any Credit Party),
independent accountants, and other experts selected by any Agent.  Each Agent
may deem and treat the payee of any Note as the holder thereof for all purposes
hereof unless and until such Agent receives and accepts an Assignment and
Acceptance executed in accordance with Section 14.10 hereof.  As to any matters
not expressly provided for by this Agreement, the Agents shall not be required
to exercise any discretion or take any action, but shall be required to act or
to refrain from acting (and shall be fully protected in so acting or refraining
from acting) upon the  instructions of the Required Banks, and such
instructions shall be binding on all of the Banks; provided, however, that the
Agents shall not be required to take any action that exposes the Agents to
personal liability or that is contrary to any Loan Paper or applicable law or
unless it shall first





CREDIT AGREEMENT                                        PAGE 50
<PAGE>   57
be indemnified to its satisfaction by the Banks against any and all liability
and expense which may be incurred by it by reason of taking any such action.

         SECTION 12.3.  Defaults.  The Agents shall not be deemed to have
knowledge or notice of the occurrence of a Default or Event of Default unless
the Agents have received written notice from a Bank or the Borrower specifying
such Default or Event of Default and stating that such notice is a "Notice of
Default".  In the event that the Agents receive such a notice of the occurrence
of a Default or Event of Default, the Administrative Agent shall give prompt
notice thereof to the Banks.  The Agents shall (subject to Section 12.2 hereof)
take such action with respect to such Default or Event of Default as shall
reasonably be directed by the Required Banks, provided that, unless and until
the Agents shall have received such directions, the Agents may (but shall not
be obligated to) take such action, or refrain from taking such action, with
respect to such Default or Event of Default as it shall deem advisable in the
best interest of the Banks.

         SECTION 12.4.  Rights as Bank.  With respect to its Commitment and the
portion of the Revolving Loan made by it, NationsBank of Texas, N.A. (and any
successor acting as an Agent) in its capacity as a Bank hereunder shall have
the same rights and powers hereunder as any other Bank and may exercise the
same as though it were not acting as an Agent, and the term "Bank" or "Banks"
shall, unless the context otherwise indicates, include the Agents in their
individual capacity. NationsBank of Texas, N.A. (and any successor acting as an
Agent) and its affiliates may (without having to account therefor to any Bank)
accept deposits from, lend money to, make investments in, provide services to,
and generally engage in any kind of lending, trust, or other business with any
Credit Party or any of its Subsidiaries or affiliates as if it were not acting
as an Agent, and NationsBank (and any successor acting as an Agent) and its
affiliates may accept fees and other consideration from any Credit Party or any
of its Subsidiaries or affiliates for services in connection with this
Agreement or otherwise without having to account for the same to the Banks.

         SECTION 12.5.  Indemnification.  The Banks agree to indemnify the
Agents (to the extent not reimbursed by the Credit Parties) ratably in
accordance with their respective Commitments, for any and all liabilities,
obligations, losses, damages, penalties, actions, judgments, suits, costs,
expenses (including attorneys' fees), or disbursements of any kind and nature
whatsoever that may be imposed on, incurred by or asserted against the Agent
(including by any Bank) in any way relating to or arising out of any Loan Paper
or the transactions contemplated thereby or any action taken or omitted by any
Agent under any Loan Paper (including any of the foregoing arising from the
negligence of any Agent); provided that no Bank shall be liable for any of the
foregoing to the extent they arise from the gross negligence or willful
misconduct of the Person to be indemnified.  Without limitation of the
foregoing, each Bank agrees to reimburse the Agents promptly upon demand for
its ratable share of any costs or expenses payable by the Borrower under
Section 14.3, to the extent that such Agents are not promptly reimbursed for
such costs and expenses by the Borrower.  The agreements contained in this
Section shall survive payment in full of the portion of the Revolving Loan and
all other amounts payable under this Agreement.

         SECTION 12.6.  Non-Reliance on Agent and Other Banks.  Each Bank
agrees that it has, independently and without reliance on any Agent or any
Bank, and based on such documents and information as it has deemed appropriate,
made its own credit analysis of the





CREDIT AGREEMENT                                        PAGE 51
<PAGE>   58
Loan Parties and their Subsidiaries and decision to enter into this Agreement
and that it will, independently and without reliance upon any Agent or any
Bank, and based on such documents and information as it shall deem appropriate
at the time, continue to make its own analysis and decisions in taking or not
taking action under the Loan Papers.  Except for notices, reports, and other
documents and information expressly required to be furnished to the Banks by
the Agents hereunder, the Agents shall not have any duty or responsibility to
provide any Bank with any credit or other information concerning the affairs,
financial condition, or business of any Credit Party or any of its Subsidiaries
or affiliates that may come into the possession of the Agents or any of their
affiliates.

         SECTION 12.7.  Resignation of Agents.  Each Agent may resign at any
time by giving notice thereof to the Banks and the Borrower.  Upon any such
resignation, the Required Banks shall have the right to appoint a successor
Agent, which shall be approved by Borrower, such approval to not be
unreasonably withheld; provided, that, Borrower shall not have the right to
approve any successor Agent appointed during the continuance of any Default.
If no successor Agent shall have been so appointed by the Required Banks and
shall have accepted such appointment within thirty (30) days after the retiring
Agent's giving of notice of resignation, then the retiring Agent may, on behalf
of the Banks, appoint a successor Agent which shall be a commercial bank
organized under the laws of the United States of America having combined
capital and surplus of at least $100,000,000 and which shall be approved by
Borrower, such approval to not be unreasonably withheld; provided, that,
Borrower shall not have the right to approve any successor Agent appointed
during the continuance of any Default.  Upon the acceptance of any appointment
as Agent hereunder by a successor (and approval of such successor by Borrower
to the extent Borrower's approval is required), such successor shall thereupon
succeed to and become vested with all the rights, powers, discretion,
privileges, and duties of the retiring Agent, and the retiring Agent shall be
discharged from its duties and obligations hereunder.  After any retiring
Agent's  resignation hereunder as an Agent, the provisions of this Article XII
shall continue in effect for its benefit in respect of any actions taken or
omitted to be taken by it while it was acting as an Agent.


                                  ARTICLE XIII

                            CHANGE IN CIRCUMSTANCES

         SECTION 13.1.  Increased Cost and Reduced Return.

         (a)     If, after the date hereof, the adoption of any applicable law,
rule, or regulation, or any change in any applicable law, rule, or regulation,
or any change in the interpretation or administration thereof by any
governmental authority, central bank, or comparable agency charged with the
interpretation or administration thereof, or compliance by any Bank (or its
Applicable Lending Office) with any request or directive (whether or not having
the force of law) of any such governmental authority, central bank, or
comparable agency:

                          (i)     shall subject such Bank (or its Applicable
                          Lending Office) to any tax, duty, or other charge
                          with respect to any Eurodollar Loans, its Note, or
                          its obligation to make Eurodollar Loans, or change
                          the basis of taxation of any amounts payable to such
                          Bank (or its Applicable Lending Office) under this





CREDIT AGREEMENT                                        PAGE 52
<PAGE>   59
                          Agreement or its Note in respect of any Eurodollar
                          Loans (other than taxes imposed on the overall net
                          income of such Bank by the jurisdiction in which such
                          Bank has its principal office or such Applicable
                          Lending Office);

                          (ii)    shall impose, modify, or deem applicable any
                          reserve, special deposit, assessment, compulsory
                          loan, or similar requirement (other than the Reserve
                          Requirement utilized in the determination of the
                          Adjusted Eurodollar Rate) relating to any extensions
                          of credit or other assets of, or any deposits with or
                          other liabilities or commitments of, such Bank (or
                          its Applicable Lending Office), including the
                          Commitment of such Bank hereunder; or

                          (iii)   shall impose on such Bank (or its Applicable
                          Lending Office) or on the  London interbank market
                          any other condition affecting this Agreement or its
                          Note or any of such extensions of credit or
                          liabilities or commitments;

and the result of any of the foregoing is to increase the cost to such Bank (or
its Applicable Lending Office) of making, Converting into, Continuing, or
maintaining any Eurodollar Loans or to reduce any sum received or receivable by
such Bank (or its Applicable Lending Office) under this Agreement or its Note
with respect to any Eurodollar Loans, then the Borrower shall pay to such Bank
on demand such amount or amounts as will compensate such Bank for such
increased cost or reduction.  If any Bank requests compensation by the Borrower
under this Section 13.1(a), the Borrower may, by notice to such Bank (with a
copy to the Administrative Agent), suspend the obligation of such Bank to make
or Continue Eurodollar Loans or to Convert all or part of the Base Rate Loan
owing to such Bank into Eurodollar Loans, until the event or condition giving
rise to such request ceases to be in effect (in which case the provisions of
Section 13.4 shall be applicable); provided that such suspension shall not
affect the right of such Bank to receive the compensation so requested.

         (b)     If, after the date hereof, any Bank shall have determined that
the adoption of any applicable law, rule, or regulation regarding capital
adequacy or any change therein or in the interpretation or administration
thereof by any governmental authority, central bank, or comparable agency
charged with the interpretation or administration thereof, or any request or
directive regarding capital adequacy (whether or not having the force of law)
of any such governmental authority, central bank, or comparable agency, has or
would have the effect of reducing the rate of return on the capital of such
Bank or any corporation controlling such Bank as a consequence of such Bank's
obligations hereunder to a level below that which such Bank or such corporation
could have achieved but for such adoption, change, request, or directive
(taking into consideration its policies with respect to capital adequacy), then
from time to time upon demand the Borrower shall pay to such Bank such
additional amount or amounts as will compensate such Bank for such reduction.

         (c)     Each Bank shall promptly notify the Borrower and the
Administrative Agent of any event of which it has knowledge, occurring after
the date hereof, which will entitle such Bank to compensation pursuant to this
Section and will designate a different Applicable Lending Office if such
designation will avoid the need for, or reduce the amount of, such compensation
and will not, in the judgment of such Bank, be otherwise disadvantageous to it.
Any Bank claiming compensation under this Section shall furnish to the Borrower
and the Administrative Agent a statement setting forth the additional amount or
amounts to be paid to





CREDIT AGREEMENT                                        PAGE 53
<PAGE>   60
it hereunder which shall be conclusive in the absence of manifest error.  In
determining such amount, such Bank may use any reasonable averaging and
attribution methods.

         SECTION 13.2.  Limitation on Eurodollar Loans.  If on or prior to the
first day of any Interest Period for any Eurodollar Loan:

                 (a)      the Administrative Agent determines (which
determination shall be conclusive) that by reason of circumstances affecting
the relevant market, adequate and reasonable means do not exist for
ascertaining the Eurodollar Rate for such Interest Period; or

                 (b)      the Required Banks determine (which determination
shall be conclusive) and notify the Administrative Agent that the Adjusted
Eurodollar Rate will not adequately and fairly reflect the cost to the Banks of
funding Eurodollar Loans for such Interest Period;

then the Administrative Agent shall give the Borrower prompt notice thereof and
the relevant amounts or periods, and so long as such condition remains in
effect, the Banks shall be under no obligation to make additional Eurodollar
Loans, Continue Eurodollar Loans, or to Convert all or any part of the Base
Rate Loan and the Borrower shall, on the last day(s) of the then current
Interest Period(s) for the outstanding Eurodollar Loans, either prepay such
Eurodollar Loans or Convert such Eurodollar Loans into the Base Rate Loan in
accordance with the terms of this Agreement.

         SECTION 13.3.  Illegality.  Notwithstanding any other provision of
this Agreement, in the event that it becomes unlawful for any Bank or its
Applicable Lending Office to make, maintain, or fund Eurodollar Loans
hereunder, then such Bank shall promptly notify the Borrower thereof and such
Bank's obligation to make or Continue Eurodollar Loans and to Convert all or
any part of the Base Rate Loan into Eurodollar Loans shall be suspended until
such time as such Bank may again make, maintain, and fund Eurodollar Loans (in
which case the provisions of Section 13.4 shall be applicable).

         SECTION 13.4.  Treatment of Affected Loans.  If the obligation of any
Bank to make particular Eurodollar Loans or to Continue Eurodollar Loans, or to
Convert all or any part of the Base Rate Loan into Eurodollar Loans shall be
suspended pursuant to Section 13.1 or 13.3 hereof, such Bank's Eurodollar Loans
shall be automatically Converted into the Base Rate Loan on the last day(s) of
the then current Interest Period(s) for Eurodollar Loans (or, in the case of a
Conversion required by Section 13.3 hereof, on such earlier date as such Bank
may specify to the Borrower with a copy to the Administrative Agent) and,
unless and until such Bank gives notice as provided below that the
circumstances specified in Section 13.1 or 13.3 hereof that gave rise to such
Conversion no longer exist:

                 (a)      to the extent that such Bank's Eurodollar Loans have
been so Converted, all payments and prepayments of principal that would
otherwise be applied to such Bank's Eurodollar Loans shall be applied instead
to the Base Rate Loan; and

                 (b)      all Loans that would otherwise be made or Continued
by such Bank as Eurodollar Loans of shall be made or Continued instead as part
of the Base Rate Loan, and all or any party of the Base Rate Loan that would
otherwise be Converted into Eurodollar Loans shall remain as part of the Base
Rate Loan.





CREDIT AGREEMENT                                        PAGE 54
<PAGE>   61
If such Bank gives notice to the Borrower (with a copy to the Administrative
Agent) that the circumstances specified in Section 13.1 or 13.3 hereof that
gave rise to the Conversion of such Bank's Eurodollar Loans pursuant to this
Section 13.4 no longer exist (which such Bank agrees to do promptly upon such
circumstances ceasing to exist) at a time when Eurodollar Loans made by other
Banks are outstanding, such Bank's portion of the Base Rate Loan shall be
automatically Converted, on the first day(s) of the next succeeding Interest
Period(s) for such outstanding Eurodollar Loans, to the extent necessary so
that, after giving effect thereto, all Loans held by the Banks holding
Eurodollar Loans  are held pro rata (as to principal amounts, and Interest
Periods) in accordance with their respective Commitments.

         SECTION 13.5.  Compensation.  Upon the request of any Bank, the
Borrower shall pay to such Bank such amount or amounts as shall be sufficient
(in the reasonable opinion of such Bank) to compensate it for any loss, cost,
or expense (including loss of anticipated profits) incurred by it as a result
of:

                 (a)      any payment, prepayment, or Conversion of a
Eurodollar Loan for any reason (including, without limitation, the acceleration
of the Revolving Loan) on a date other than the last day of  the Interest
Period for such Loan; or

                 (b)      any failure by the Borrower for any reason
(including, without limitation, the failure of any condition precedent
specified in Article VI to be satisfied) to borrow, Convert, Continue, or
prepay a Eurodollar Loan on the date for such borrowing, Conversion,
Continuation, or prepayment specified in the relevant notice of borrowing,
prepayment, Continuation, or Conversion under this Agreement.

         SECTION 13.6.  Taxes.  (a)  Any and all payments by the Borrower to or
for the account of any Bank or any Agent hereunder or under any other Loan
Paper shall be made free and clear of and without deduction for any and all
present or future taxes, duties, levies, imposts, deductions, charges or
withholdings, and all liabilities with respect thereto, excluding, in the case
of each Bank and each Agent, taxes imposed on its income, and franchise taxes
imposed on it, by the jurisdiction under the laws of which such Bank (or its
Applicable Lending Office) or such Agent (as the case may be) is organized or
any political subdivision thereof (all such non-excluded taxes, duties, levies,
imposts, deductions, charges, withholdings, and liabilities being hereinafter
referred to as "Taxes").  If the Borrower shall be required by law to deduct
any Taxes from or in respect of any sum payable under this Agreement or any
other Loan Paper to any Bank or any Agent, (i) the sum payable shall be
increased as necessary so that after making all required deductions (including
deductions applicable to additional sums payable under this Section 13.6) such
Bank or such Agent receives an amount equal to the sum it would have received
had no such deductions been made, (ii) the Borrower shall make such deductions,
(iii) the Borrower shall pay the full amount deducted to the relevant taxation
authority or other authority in accordance with applicable law, and (iv) the
Borrower shall furnish to the Administrative Agent, at its address referred to
in Section 14.1, the original or a certified copy of a receipt evidencing
payment thereof.

         (b)     In addition, the Borrower agrees to pay any and all present or
future stamp or documentary taxes and any other excise or property taxes or
charges or similar levies which arise from any payment made under this
Agreement or any other Loan Paper or from the





CREDIT AGREEMENT                                        PAGE 55
<PAGE>   62
execution or delivery of, or otherwise with respect to, this Agreement or any
other Loan Paper (hereinafter referred to as "Other Taxes").

         (c)     The Borrower agrees to indemnify each Bank and each Agent for
the full amount of Taxes and Other Taxes (including, without limitation, any
Taxes or Other Taxes imposed or asserted by any jurisdiction on amounts payable
under this Section 13.6) paid by such Bank or such Agent (as the case may be)
and any liability (including penalties, interest, and expenses) arising
therefrom or with respect thereto.

         (d)      Each Bank organized under the laws of a jurisdiction outside
the United States, on or prior to the date of its execution and delivery of
this Agreement in the case of each Bank listed on the signature pages hereof
and on or prior to the date on which it becomes a Bank in the case of each
other Bank, and from time to time thereafter if requested in writing by the
Borrower or the Administrative Agent (but only so long as such Bank remains
lawfully able to do so), shall provide the Borrower and the Agent with (i)
Internal Revenue Service Form 1001 or 4224, as appropriate, or any successor
form prescribed by the Internal Revenue Service, certifying that such Bank is
entitled to benefits under an income tax treaty to which the United States is a
party which reduces the rate of withholding tax on payments of interest or
certifying that the income receivable pursuant to this Agreement is effectively
connected with the conduct of a trade or business in the United States, (ii)
Internal Revenue Service Form W-8 or W-9, as appropriate, or any successor form
prescribed by the Internal Revenue Service, and (iii) any other form or
certificate required by any taxing authority (including any certificate
required by Sections 871(h) and 881(c) of the Internal Revenue Code),
certifying that such Bank is entitled to an exemption from or a reduced rate of
tax on payments pursuant to this Agreement or any of the other Loan Papers.

         (e)     For any period with respect to which a Bank has failed to
provide the Borrower and the Administrative Agent with the appropriate form
pursuant to Section 13.6(d) (unless such failure is due to a change in treaty,
law, or regulation occurring subsequent to the date on which a form originally
was required to be provided), such Bank shall not be entitled to
indemnification under Section 13.6(a) or 13.6(b) with respect to Taxes imposed
by the United States; provided, however, that should a Bank, which is otherwise
exempt from or subject to a reduced rate of withholding tax, become subject to
Taxes because of its failure to deliver a form required hereunder, the Borrower
shall take such steps as such Bank shall reasonably request to assist such Bank
to recover such Taxes.

         (f)     If the Borrower is required to pay additional amounts to or
for the account of any Bank pursuant to this Section 13.6, then such Bank will
agree to use reasonable efforts to change the jurisdiction of its Applicable
Lending Office so as to eliminate or reduce any such additional payment which
may thereafter accrue if such change, in the judgment of such Bank, is not
otherwise disadvantageous to such Bank.

         (g)     Within thirty (30) days after the date of any payment of
Taxes, the Borrower shall furnish to the Agent the original or a certified copy
of a receipt evidencing such payment.

         (h)     Without prejudice to the survival of any other agreement of
the Borrower hereunder, the agreements and obligations of the Borrower
contained in this Section 13.6 shall survive the termination of the Commitments
and the payment in full of the Notes.





CREDIT AGREEMENT                                        PAGE 56
<PAGE>   63
         SECTION 13.7.  Discretion of Banks as to Manner of Funding.
Notwithstanding any provisions of this Agreement to the contrary, each Bank
shall be entitled to fund and maintain its funding of all or any part of its
Commitment in any manner it sees fit, it being understood, however, that for
the purposes of this Agreement all determinations hereunder shall be made as if
such Bank had actually funded and maintained each Eurodollar Loan during the
Interest Period for such Eurodollar Loan through the purchase of deposits
having a maturity corresponding to the last day of such Interest Period and
bearing an interest rate equal to the Adjusted Eurodollar Rate for such
Interest Period.

                                  ARTICLE XIV

                                 MISCELLANEOUS

         SECTION 14.1.  Notices.  All notices, requests and other
communications to any party hereunder shall be in writing  (including bank
wire, telecopy or similar writing) and shall be given, if to any Agent or any
Bank, at its address or telecopier number set forth on Schedule 1.1 hereto, and
if given to Parent or Borrower, at their respective addresses or telecopy
numbers set forth on the signature pages hereof (or in either case, at such
other address or telecopy number as such party may hereafter specify for the
purpose by notice to the other parties hereto).  Each such notice, request or
other communication shall be effective (a) if given by telecopy, when such
telecopy is transmitted to the telecopy number specified in this Section 14.1
and the appropriate answerback is received or receipt is otherwise confirmed,
(b) if given by mail, three (3) Domestic Business Day after deposit in the
mails with first class postage prepaid, addressed as aforesaid or (c) if given
by any other means, when delivered at the address specified in this Section
14.1; provided that notices to Agent under Article II  shall not be effective
until received.

         SECTION 14.2.  No Waivers.  No failure or delay by any Agent or any
Bank in exercising any right, power or privilege hereunder or under any Note or
other Loan Paper shall operate as a waiver thereof nor shall any single or
partial exercise thereof preclude any other or further exercise thereof or the
exercise of any other right, power or privilege.  The rights and remedies
herein provided shall be cumulative and not exclusive of any rights or remedies
provided by Law or in any of the other Loan Papers.

         SECTION 14.3.  Expenses; Indemnification.  (a) The Credit Parties
jointly and severally agree to pay on demand all reasonable costs and expenses
of the Agents in connection with the syndication, preparation, execution,
delivery, modification, and amendment of this Agreement, the other Loan Papers,
and the other documents to be delivered hereunder, including, without
limitation, the reasonable fees and expenses of counsel for Agents  with
respect thereto and with respect to advising Agents as to their rights and
responsibilities under the Loan Papers; provided that Agents agree that in the
case of the initial preparation of the Loan Papers and the initial closing of
the transactions contemplated thereby, the costs and expenses the Credit
Parties are obligated to pay pursuant to this sentence shall be limited to the
fees referred to in Section 2.12 and the fees and expenses of counsel to the
Agents.  The Credit Parties further jointly and severally agree to pay on
demand all costs and expenses of Agents and Banks, if any (including, without
limitation, reasonable attorneys' fees and expenses), in connection with the
enforcement (whether through negotiations, legal proceedings, or otherwise) of
the Loan Papers and the other documents to be delivered hereunder.





CREDIT AGREEMENT                                        PAGE 57
<PAGE>   64
         (b)     THE CREDIT PARTIES JOINTLY AND SEVERALLY AGREE TO INDEMNIFY
AND HOLD HARMLESS EACH AGENT AND EACH BANK AND EACH OF THEIR AFFILIATES AND
THEIR RESPECTIVE OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, AND ADVISORS (EACH, AN
"INDEMNIFIED PARTY") FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES,
LIABILITIES, COSTS, AND EXPENSES (INCLUDING, WITHOUT LIMITATION, REASONABLE
ATTORNEYS' FEES) THAT MAY BE INCURRED BY OR ASSERTED OR AWARDED AGAINST ANY
INDEMNIFIED PARTY, IN EACH CASE ARISING OUT OF OR IN CONNECTION WITH OR BY
REASON OF (INCLUDING, WITHOUT LIMITATION, IN CONNECTION WITH ANY INVESTIGATION,
LITIGATION, OR PROCEEDING OR PREPARATION OF DEFENSE IN CONNECTION THEREWITH)
THE LOAN PAPERS, ANY OF THE TRANSACTIONS CONTEMPLATED HEREIN OR THE ACTUAL OR
PROPOSED USE OF THE PROCEEDS OF THE REVOLVING LOAN (INCLUDING ANY OF THE
FOREGOING ARISING FROM THE NEGLIGENCE OF THE INDEMNIFIED PARTY), EXCEPT TO THE
EXTENT SUCH CLAIM, DAMAGE, LOSS, LIABILITY, COST, OR EXPENSE IS FOUND IN A
FINAL, NON-APPEALABLE JUDGMENT BY A COURT OF COMPETENT JURISDICTION TO HAVE
RESULTED FROM SUCH INDEMNIFIED PARTY'S GROSS NEGLIGENCE OR WILLFUL MISCONDUCT.
IN THE CASE OF AN INVESTIGATION, LITIGATION OR OTHER PROCEEDING TO WHICH THE
INDEMNITY IN THIS SECTION 14.3 APPLIES, SUCH INDEMNITY SHALL BE EFFECTIVE
WHETHER OR NOT SUCH INVESTIGATION, LITIGATION OR PROCEEDING IS BROUGHT BY
CREDIT PARTIES, ITS DIRECTORS, SHAREHOLDERS OR CREDITORS OR AN INDEMNIFIED
PARTY OR ANY OTHER PERSON OR ANY INDEMNIFIED PARTY IS OTHERWISE A PARTY THERETO
AND WHETHER OR NOT THE TRANSACTIONS CONTEMPLATED HEREBY ARE CONSUMMATED.
CREDIT PARTIES AGREE NOT TO ASSERT ANY CLAIM AGAINST ANY AGENT, ANY BANK, ANY
OF THEIR AFFILIATES, OR ANY OF THEIR RESPECTIVE DIRECTORS, OFFICERS, EMPLOYEES,
ATTORNEYS, AGENTS, AND ADVISERS, ON ANY THEORY OF LIABILITY, FOR SPECIAL,
INDIRECT, CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING OUT OF OR OTHERWISE
RELATING TO THE LOAN PAPERS, ANY OF THE TRANSACTIONS CONTEMPLATED HEREIN OR THE
ACTUAL OR PROPOSED USE OF THE PROCEEDS OF THE REVOLVING LOAN.

         (c)     Without prejudice to the survival of any other agreement of
Credit Parties hereunder, the agreements and obligations of Credit Parties
contained in this Section 14.3 shall survive the payment in full of the
Revolving Loan and all other amounts payable under this Agreement.

         SECTION 14.4.  Right of Set-off; Adjustments.  (a) Upon the occurrence
and during the continuance of any Event of Default, each Bank (and each of its
Affiliates) is hereby authorized at any time and from time to time, to the
fullest extent permitted by Law, to set off and apply any and all deposits
(general or special, time or demand, provisional or final) at any time held and
other indebtedness at any time owing by such Bank (or any of its Affiliates) to
or for the credit or the account of any Credit Party against any and all of the
Obligations, irrespective of whether such Bank shall have made any demand under
this Agreement or Note held by such and although such obligations may be
unmatured.  Each Bank agrees promptly





CREDIT AGREEMENT                                        PAGE 58
<PAGE>   65
to notify the affected Credit Party after any such set-off and application made
by such Bank; provided, however, that the failure to give such notice shall not
affect the validity of such set-off and application.  The rights of each Bank
under this Section 14.4 are in addition to other rights and remedies
(including, without limitation, other rights of set-off) that such Bank may
have.

         (b)     If any Bank (a "benefitted Bank") shall at any time receive
any payment of all or part of the amounts owing to it, or interest thereon, or
receive any collateral in respect thereof (whether voluntarily or
involuntarily, by set-off, or otherwise), in a greater proportion than any such
payment to or collateral received by any other Bank, if any, in respect of such
other Bank's amounts owing to it, or interest thereon, such benefitted Bank
shall purchase for cash from the other Banks a participating interest in such
portion of each such other Bank's amounts owing to it, or shall provide such
other Banks with the benefits of any such collateral, or the proceeds thereof,
as shall be necessary to cause such benefitted Bank to share the excess payment
or benefits of such collateral or proceeds ratably with each Bank; provided,
however, that if all or any portion of such excess payment or benefits is
thereafter recovered from such benefitted Bank, such purchase shall be
rescinded, and the purchase price and benefits returned, to the extent of such
recovery, but without interest.  Each Credit Party agrees that any Bank so
purchasing a participation from a Bank pursuant to this Section 14.4 may, to
the fullest extent permitted by Law, exercise all of its rights of payment
(including the right of set-off) with respect to such participation as fully as
if such Person were the direct creditor of Credit Parties in the amount of such
participation.

         SECTION 14.5.  Amendments and Waivers.  Any provision of this
Agreement, the Notes or the other Loan Papers may be amended or waived if, but
only if such amendment or waiver is in writing and is signed by Borrower and
the Required Banks (and, if the rights or duties of any Agent are affected
thereby, by such Agent);  provided that no such amendment or waiver shall,
unless signed by all Banks, (a) increase the Commitment of any Bank, (b) reduce
the principal of or rate of interest on any Loan or any fees or other amounts
payable hereunder or for termination of any Commitment, (c) change the
percentage of the Total Commitment, or the number of Banks which shall be
required for the Banks or any of them to take any action under this Section
14.5 or any other provision of this Agreement, or (e) release any material
guarantor or other material party liable for all or any part of the Obligations
or release any material part of the collateral for the Obligations or any part
thereof other than releases required pursuant to sales of collateral which are
expressly permitted by Section 9.5 hereof.

         SECTION 14.6.  Survival.  All representations, warranties and
covenants made by the Credit Parties herein or in any certificate or other
instrument delivered by it or in its behalf under the Loan Papers shall be
considered to have been relied upon by Banks and shall survive the delivery to
Banks of such Loan Papers or the extension of the Revolving Loan (or any part
thereof), regardless of any investigation made by or on behalf of Banks.  The
indemnity provided in Section 14.3(b) herein shall survive the repayment of all
credit advances hereunder and/or the discharge or release of any Lien granted
hereunder or in any other Loan Paper, contract or agreement between Borrower or
any other Credit Party and Agent or any Bank.

         SECTION 14.7.  Limitation on Interest.  Regardless of any provision
contained in the Loan Papers, Banks shall never be entitled to receive,
collect, or apply, as interest on the





CREDIT AGREEMENT                                        PAGE 59
<PAGE>   66
Revolving Loan, any amount in excess of the Maximum Lawful Rate, and in the
event any Bank ever receives, collects or applies as interest any such excess,
such amount which would be deemed excessive interest shall be deemed a partial
prepayment of principal and treated hereunder as such; and if the Revolving
Loan is paid in full, any remaining excess shall promptly be paid to Borrower.
In determining whether or not the interest paid or payable under any specific
contingency exceeds the Maximum Lawful Rate, Borrower and Banks shall, to the
extent permitted under applicable Law, (a) characterize any nonprincipal
payment as an expense, fee or premium rather than as interest, (b) exclude
voluntary prepayments and the effects thereof and (c) amortize, prorate,
allocate and spread, in equal parts, the total amount of the interest
throughout the entire contemplated term of the Notes, so that the interest rate
is the Maximum Lawful Rate throughout the entire term of the Notes; provided,
however, that if the unpaid principal balance thereof is paid and performed in
full prior to the end of the full contemplated term thereof, and if the
interest received for the actual period of existence thereof exceeds the
Maximum Lawful Rate, Banks shall refund to Borrower the amount of such excess
and, in such event, Banks shall not be subject to any penalties provided by any
laws for contracting for, charging, taking, reserving or receiving interest in
excess of the Maximum Lawful Rate.

         SECTION 14.8.  Invalid Provisions.  If any provision of the Loan
Papers is held to be illegal, invalid, or unenforceable under present or future
Laws effective during the term thereof, such provision shall be fully
severable, the Loan Papers shall be construed and enforced as if such illegal,
invalid, or unenforceable provision had never comprised a part thereof, and the
remaining provisions thereof shall remain in full force and effect and shall
not be affected by the illegal, invalid, or unenforceable provision or by its
severance therefrom.  Furthermore, in lieu of such illegal, invalid, or
unenforceable provision there shall be added automatically as a part of the
Loan Papers a provision as similar in terms to such illegal, invalid, or
unenforceable provision as may be possible and be legal, valid and enforceable.

         SECTION 14.9.  Waiver of Consumer Credit Laws.  Pursuant to Article
15.10(b) of Chapter 15, Subtitle 79, Revised Civil Statutes of Texas, 1925, as
amended, Borrower agrees that such Chapter 15 shall not govern or in any manner
apply to the Revolving Loan.

         SECTION 14.10.  Assignments and Participations.  (a) Each Bank may
assign to one or more Eligible Assignees all or a portion of its rights and
obligations under this Agreement (including, without limitation, all or a
portion of its Revolving Loan, its Note, and its Commitment); provided,
however, that

                 (i)      each such assignment shall be to an Eligible
                 Assignee;

                 (ii)     except in the case of an assignment to another Bank
                 or an assignment of all of a Bank's rights and obligations
                 under this Agreement, any such partial assignment shall be in
                 an amount at least equal to $5,000,000 or an integral multiple
                 of $1,000,000 in excess thereof;

                 (iii)    each such assignment by a Bank shall be of a
                 constant, and not varying, percentage of all of its rights and
                 obligations under this Agreement and the Note; and





CREDIT AGREEMENT                                        PAGE 60
<PAGE>   67
                 (iv)     the parties to such assignment shall execute and
                 deliver to the Agent for its acceptance an Assignment and
                 Acceptance in the form of Exhibit J hereto, together with any
                 Note subject to such assignment and a processing fee of
                 $3,500.

Upon execution, delivery, and acceptance of such Assignment and Acceptance, the
assignee thereunder shall be a party hereto and, to the extent of such
assignment, have the obligations, rights, and benefits of a Bank hereunder and
the assigning Bank shall, to the extent of such assignment, relinquish its
rights and be released from its obligations under this Agreement.  Upon the
consummation of any assignment pursuant to this Section, the assignor, the
Administrative Agent and the Borrower shall make appropriate arrangements so
that, if required, new Notes are issued to the assignor and the assignee.  If
the assignee is not incorporated under the laws of the United States of America
or a state thereof, it shall deliver to the Borrower and the Agent
certification as to exemption from deduction or withholding of Taxes in
accordance with Section 13.6(d).

         (b)     The Administrative Agent shall maintain at its address
referred to in Section 14.01 a copy of each Assignment and Acceptance delivered
to and accepted by it and a register for the recordation of the names and
addresses of the Banks and the Commitment and Commitment Percentage of, and
principal amount of the Revolving Loan owing to, each Bank from time to time
(the "Register").  The entries in the Register shall be conclusive and binding
for all purposes, absent manifest error, and the Borrower, the Agents and the
Banks may treat each Person whose name is recorded in the Register as a Bank
hereunder for all purposes of this Agreement.  The Register shall be available
for inspection by the Borrower or any Bank at any reasonable time and from time
to time upon reasonable prior notice.

         (c)     Upon its receipt of an Assignment and Acceptance executed by
the parties thereto, together with any Note subject to such assignment and
payment of the processing fee, the Administrative Agent shall, if such
Assignment and Acceptance has been completed and is in substantially the form
of Exhibit J hereto, (i) accept such Assignment and Acceptance, (ii) record the
information contained therein in the Register and (iii) give prompt notice
thereof to the parties thereto.

         (d)     Each Bank may sell participations to one or more Persons in
all or a portion of its rights, obligations, or  rights and obligations under
this Agreement (including all or a portion of its Commitment or its interest in
the Revolving Loan); provided, however, that  (i) such Bank's obligations under
this Agreement shall remain unchanged,  (ii) such Bank shall remain solely
responsible to the other parties hereto for the performance of such
obligations,  (iii) the participant shall be entitled to the benefit of the
yield protection provisions contained in Article XIII and the right of set-off
contained in Section 14.04, and (iv) the Borrower shall continue to deal solely
and directly with such Bank in connection with such Bank's rights and
obligations under this Agreement, and such Bank shall retain the sole right to
enforce the obligations of the Borrower relating to its Revolving Loan and its
Note and to approve any amendment, modification, or waiver of any provision of
this Agreement (other than amendments, modifications, or waivers decreasing the
amount of principal of or the rate at which interest is payable on such
Revolving Loan or Note, extending any scheduled principal payment date or date
fixed for the payment of interest on such Revolving Loan or Note, or extending
its Commitment).





CREDIT AGREEMENT                                        PAGE 61
<PAGE>   68
         (e)     Notwithstanding any other provision set forth in this
Agreement, any Bank may at any time assign and pledge all or any portion of its
Revolving Loan and its Note to any Federal Reserve Bank as collateral security
pursuant to Regulation A and any Operating Circular issued by such Federal
Reserve Bank.  No such assignment shall release the assigning Bank from its
obligations hereunder.

         (f)     Any Bank may furnish any information concerning the Borrower
or any of its Subsidiaries in the possession of such Bank from time to time to
assignees and participants (including prospective assignees and participants).

         SECTION 14.11.  TEXAS LAW.  THIS AGREEMENT, EACH NOTE AND THE OTHER
LOAN PAPERS HAVE BEEN EXECUTED AND DELIVERED IN THE STATE OF TEXAS AND SHALL BE
CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF TEXAS AND
THE LAWS OF THE UNITED STATES OF AMERICA, EXCEPT TO THE EXTENT THAT THE LAWS OF
ANY STATE IN WHICH ANY PROPERTY INTENDED AS SECURITY FOR THE OBLIGATIONS IS
LOCATED NECESSARILY GOVERN (A) THE PERFECTION AND PRIORITY OF THE LIENS IN
FAVOR OF AGENT AND BANKS WITH RESPECT TO SUCH PROPERTY, AND (B) THE EXERCISE OF
ANY REMEDIES (INCLUDING FORECLOSURE) WITH RESPECT TO SUCH PROPERTY.

         SECTION 14.12.  Consent to Jurisdiction; Waiver of Immunities.  (a)
Parent and Borrower each hereby irrevocably submit to the jurisdiction of any
Texas State or Federal court sitting in the Northern District of Texas over any
action or proceeding arising out of or relating to this Agreement or any other
Loan Papers, and Parent and Borrower hereby irrevocably agree that all claims
in respect of such action or proceeding may be heard and determined in such
Texas State or Federal court.  As an alternative, Parent and Borrower each
irrevocably consent to the service of any and all process in any such action or
proceeding by the mailing of copies of such process to such Person at its
address specified in Section 14.1.  Parent and Borrower agree that a final
judgment on any such action or proceeding shall be conclusive and may be
enforced in other jurisdictions by suit on the judgment or in any other manner
provided by law.

         (b)     Nothing in this Section 14.12 shall affect any right of Banks
to serve legal process in any other manner permitted by law or affect the right
of any Bank to bring any action or proceeding against any Credit Party or their
properties in the courts of any other jurisdictions.

         (c)     To the extent that Parent or Borrower has or hereafter may
acquire any immunity from jurisdiction of any court or from any legal process
(whether through service or notice, attachment prior to judgment, attachment in
aid of execution, execution or otherwise) with respect to itself or its
property, such Person hereby irrevocably waives such immunity in respect of its
obligations under this Agreement and the other Loan Papers.

         SECTION 14.13.  Counterparts; Effectiveness.  This Agreement may be
signed in any number of counterparts, each of which shall be an original, with
the same effect as if the signatures thereto and hereto were upon the same
instrument.  This Agreement shall become effective when Administrative Agent
shall have received counterparts hereof signed by all of the parties hereto or,
in the case of any Bank as to which an executed counterpart shall not





CREDIT AGREEMENT                                        PAGE 62
<PAGE>   69
have been received, Administrative Agent shall have received telegraphic or
other written confirmation from such Bank of execution of a counterpart hereof
by such Bank.

         SECTION 14.14.  No Third Party Beneficiaries.  It is expressly
intended that there shall be no third party beneficiaries of the covenants,
agreements, representations or warranties herein contained other than the
Syndication Agent and the Arranger and third party beneficiaries permitted
pursuant to Section 14.10(b).

         SECTION 14.15.  COMPLETE AGREEMENT.  THIS AGREEMENT  AND THE OTHER
LOAN PAPERS COLLECTIVELY REPRESENT THE FINAL AGREEMENT BY AND AMONG BANKS,
AGENTS AND THE CREDIT PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF BANKS, AGENTS, PARENT OR
BORROWER.  THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG BANKS, AGENTS, PARENT
OR BORROWER.

         SECTION 14.16. WAIVER OF JURY TRIAL.  PARENT, BORROWER, AGENTS AND
BANKS HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVE TRIAL BY JURY IN ANY LEGAL
ACTION OR PROCEEDING RELATING TO THIS AGREEMENT OR ANY OF THE OTHER LOAN PAPERS
AND FOR ANY COUNTERCLAIM THEREIN.

         SECTION 14.17.   Confidentiality.  Each Agent and each Bank agrees to
keep confidential any information furnished or made available to it by the
Borrower pursuant to this Agreement this is marked confidential; provided that
nothing herein shall prevent any Agent or any Bank from disclosing such
information (a) to any other Agent or Bank, or any officer, director, employee,
agent, or advisor of any Agent or Bank or any of their Affiliates, (b) to any
other Person if reasonably incidental to the administration of the credit
facility provided herein, (c) as required by any law, rule or regulation, (d)
upon the order of any court or administrative agency, (e) upon the request or
demand of any regulatory agency or authority, (f) that is or becomes available
to the public or that is or becomes available to any Agent or any Bank other
than as a result of a disclosure by any Agent or any Bank prohibited by this
Agreement, (g) in connection with any litigation to which such Agent or Bank or
any of its affiliates may be a party, (h) to the extent necessary in connection
with the exercise of any remedy under this Agreement or any other Loan Paper,
and (i) subject to provisions substantially similar to those contained in this
Section, to any actual or proposed participant or assignee.

                          [signature pages to follow]





CREDIT AGREEMENT                                        PAGE 63
<PAGE>   70
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed by their respective authorized officers on the day and year
first above written.


BORROWER:

DENBURY MANAGEMENT, INC.,
a Texas corporation



By: _______________________________________ By:________________________________
Name: Gareth Roberts                        Name: Phil Rykhoek 
Title: President and Chief                  Title: Chief Financial Officer  
          Executive Officer                           and Secretary

Address for Notice:

17304 Preston Road, Suite 200
Dallas, Texas 75252
Fax No. (214) 380-6967

PARENT:

DENBURY RESOURCES, INC.,
a corporation incorporated under the
Canada Business Corporations Act


By: _______________________________________ By:_______________________________
Name: Gareth Roberts                        Name: Phil Rykhoek 
Title: President and Chief                  Title: Chief Financial Officer 
          Executive Officer                           and Secretary

Address for Notice:

17304 Preston Road, Suite 200
Dallas, Texas 75252
Fax No. (214) 380-6967





First Restated Credit Agreement -Signature Page
<PAGE>   71
BANKS:

NATIONSBANK OF TEXAS, N.A.


By:________________________________________
         J. Scott Fowler, Vice President



ADMINISTRATIVE AGENT:

NATIONSBANK OF TEXAS, N.A.


By:________________________________________
         J. Scott Fowler, Vice President





First Restated Credit Agreement -Signature Page
<PAGE>   72
                                   EXHIBIT A

                                                This Instrument was prepared by,
                                        and when recorded should be returned to:

                                                         Gardere & Wynne, L.L.P.
                                                     1601 Elm Street, Suite 3000
                                                            Dallas, Texas  75201
                                                         Attn:  William D. Young

================================================================================



                             AMENDMENT TO MORTGAGES

         This Amendment to Mortgages (this "Amendment") is entered into as of
the 29th day of December, 1997, between Denbury Management, Inc., a Texas
corporation ("Denbury") and NationsBank of Texas, N.A., in its capacity as
"Agent" under the Existing Credit Agreement (as hereinafter defined) ("Agent")
and NationsBank of Texas, N.A. in its capacity as Administrative Agent
("Administrative Agent") for the Banks (as defined in the Credit Agreement, as
hereinafter defined).

                              W I T N E S S E T H:

         WHEREAS, Denbury, Denbury Holdings, Ltd. ("Holdings"), Denbury
Resources, Inc. ("Resources"),  NationsBank of Texas, N.A. ("NationsBank"),
NationsBank as Agent, Bankers Trust Company ("BT") and International
Nederlanden (U.S.) Capital Corporation ("ING") (NationsBank, BT and ING are
collectively referred to herein as the "Existing Banks") are parties to that
certain Credit Agreement, dated as of May 31, 1996 (as amended through, but
excluding, the date hereof, the "Existing Credit Agreement"), pursuant to which
the Existing Banks have made certain loans (the "Existing Loans") and provided
certain other extensions of credit to Denbury (the Existing Loans and such
other extensions of credit are collectively referred to herein as the "Existing
Credit"); and

         WHEREAS, pursuant to instruments of an even date herewith BT and ING
have assigned (the "Assignment") their interests under the Existing Credit
Agreement and the Loan Papers (as therein defined) to NationsBank and
NationsBank has assumed the obligations of BT and ING thereunder; and

         WHEREAS, Denbury, Resources, NationsBank and Administrative Agent have
entered into a First Restated Credit Agreement (the "Credit Agreement"),
pursuant to which the Existing Credit Agreement was amended and restated in its
entirety and NationsBank (as the sole Bank thereunder) has agreed to extend
credit to Denbury (NationsBank and each other Bank which hereafter becomes a
party to the Credit Agreement are collectively referred to herein as "Banks,"
and individually as a "Bank"); and

         WHEREAS, the obligations of Denbury under the Existing Credit
Agreement are secured in part by those certain Deeds of Trust and Mortgages
executed by Denbury in favor
<PAGE>   73
of Agent for the benefit of the Banks under the Existing Credit Agreement which
are more particularly described in Schedule I hereto (as amended, the "Original
Mortgages"); and

         WHEREAS, the obligations of Denbury under the Existing Credit
Agreement are further secured in part by those certain Deeds of Trust and
Mortgages executed by Denbury in favor of Agent for the benefit of Banks under
the Existing Credit Agreement which are more particularly described in Schedule
II hereto (the "June 1996 Mortgages", together with the Original Mortgages, the
"Mortgages"); and

         WHEREAS, as a condition to entering into the Credit Agreement,
Administrative Agent and the Banks have required that the Mortgages be amended
in certain respects; and

         WHEREAS, Borrower has agreed to amend the Mortgages.

         NOW, THEREFORE, in consideration of the promises contained herein and
other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, and intending to be legally bound hereby, the parties
agree as follows:

                                       I.
                             AMENDMENT TO MORTGAGES

         Section 1.1.     Amendments to Original Mortgages.  The Original
Mortgages shall be and hereby are amended in the following respects;

                 (a)      The existing Sections 1.3(a) and (b) of the Original
         Mortgages shall be deleted and the following shall be inserted in
         place thereof:

                          (a)  All indebtedness and other obligations,
                 including, without limitation, the Obligations as defined in
                 the Credit Agreement (as hereinafter defined), now or
                 hereafter incurred or arising pursuant to the provisions of
                 that certain First Restated Credit Agreement dated as of
                 December 29, 1997 between Denbury Management, Inc.
                 ("Mortgagor"), Denbury Resources, Inc., as Guarantor,
                 NationsBank of Texas, N.A., as Administrative Agent
                 ("Administrative Agent"), and the financial institutions
                 listed on Schedule 1 thereto ("Banks"), together with all
                 future or additional supplements thereto and amendments or
                 modifications thereof, and all agreements given in
                 substitution therefor or in restatement, renewal or extension
                 thereof, in whole or in part (such First Restated Credit
                 Agreement, as amended and otherwise as the same may from time
                 to time be supplemented, amended or modified, and all other
                 agreements given in substitution therefor or in restatement,
                 renewal or extension thereof, in whole or in part, being
                 herein called the "Credit Agreement");

                          (b)     one certain promissory note dated as of
                 December 29, 1997, in the amount of $300,000,000, made by
                 Mortgagor payable to the order of NationsBank of Texas, N.A.,
                 which note shall evidence indebtedness which the Banks are
                 obligated to advance to Mortgagor pursuant to the terms of the
                 Credit Agreement in the aggregate principal amount outstanding
                 from time to time not to exceed the sum of $300,000,000.00,
                 and all other notes given in substitution





                                       67
<PAGE>   74
                 therefor or in renewal or extension thereof, in whole or in
                 part (the foregoing described notes and all other notes given
                 in substitution, renewal or extension thereof, in whole or in
                 part being hereinafter collectively referred to as the
                 "Note");

                 (c)      Notwithstanding anything to the contrary contained in
         the Original Mortgages, the maximum amount of indebtedness secured by
         the Original Mortgages is hereby increased to $350,000,000.

                 (d)      All references in the Original Mortgages to the
         "Credit Agreement" shall be deemed to be a reference to the "Credit
         Agreement" as defined herein.

                 (e)      All references in the Original Mortgages to "Agent"
         shall be deemed to be a reference to "Administrative Agent" as defined
         herein.

                                      II.
                        AMENDMENT TO JUNE 1996 MORTGAGES

         Section 2.1      Amendment to June 1996 Mortgages.  The June 1996
Mortgages shall be and hereby are amended in the following respects:

                 (a)      The definition of  "Credit Agreement" set forth in
Section 1.1 of the June 1996 Mortgages shall be deleted and the following shall
be inserted in place thereof:

                          "Credit Agreement" means that certain First Restated
                 Credit Agreement dated as of December 29, 1997, among
                 Mortgagor, Denbury Resources, Inc., as Guarantor,  NationsBank
                 of Texas, N.A., as Administrative Agent, and the financial
                 institutions listed on Schedule 1 thereto (the "Banks"),
                 together with all future or additional supplements thereto and
                 amendments or modifications thereof, and all agreements given
                 in substitution therefor or in restatement, renewal or
                 extension thereof, in whole or in part.

         Additionally, all references in the June 1996 Mortgages to the "Banks"
         shall be deemed to be a reference to the "Banks" as defined herein.

                 (b)      The definition of "Loan" set forth in Section 1.1 of
         the June 1996 Mortgages shall be deleted and the following shall be
         inserted in place thereof:

                          "Loan" means the revolving loan in an amount
                 outstanding at any time not to exceed the amount of the Total
                 Commitment then in effect to be made by Banks to Mortgagor in
                 accordance with the Credit Agreement.

                 (c)      The definition of "Loan Papers" set forth in Section
         1.1 of the June 1996 Mortgages shall be deleted and the following
         shall be inserted in place thereof:

                          "Loan Papers" shall mean the Credit Agreement, the
                 Notes, the Facility Guaranty, the Pledge Agreements (as
                 amended by the Pledge Amendments), the





                                       68
<PAGE>   75
                 Existing Mortgages, and any other Mortgage at any time
                 hereafter delivered, and all other certificates, documents or
                 instruments delivered in connection with the Credit Agreement,
                 as the foregoing may be amended from time to time.

                 (d)      The definition of "Notes" set forth in Section 1.1 of
         the June 1996 Mortgages shall be deleted and the following shall be
         inserted in place thereof:

                          "Note" shall mean that one certain promissory note
                 dated as of December 29, 1997, in the amount of $300,00,000,
                 made by Mortgagor payable to the order of NationsBank of
                 Texas, N.A., which note shall evidence indebtedness which the
                 Banks are obligated to advance to Mortgagor pursuant to the
                 terms of the Credit Agreement in the aggregate principal
                 amount outstanding from time to time not to exceed the sum of
                 $300,000,000, and all other notes given in substitution
                 therefor or in renewal or extension thereof, in whole or in
                 part.

         Additionally, all references in the June 1996 Mortgages to the "Notes"
         shall be deemed to be a reference to the "Note" as defined herein.

                 (e)      The definition of "Obligations" set forth in Section
         1.1 of the June 1996 Mortgages shall be deleted and the following
         shall be inserted in place thereof:

                          "Obligations" shall have the meaning set forth in the
         Credit Agreement.

                 (f)      The definition of "Total Commitment" set forth in
         Section 1.1 of the June 1996 Mortgages shall be amended by deleting
         the amount of "$150,000,000" and replacing it with the amount of
         "$300,000,000".

                 (g)      The first three lines and paragraphs (a) and (b) of
         Article III of the June 1996 Mortgages shall be deleted and the
         following shall be inserted in place thereof:

                          This Mortgage is given to secure and enforce the
                 payment and performance of the following obligations,
                 indebtedness and liabilities:

                          (a)     all indebtedness and other obligations,
                 including, without limitation, the Obligations, now or
                 hereafter incurred or arising pursuant to the provisions of
                 the Credit Agreement;

                          (b)     the Note;

                 (h)      Notwithstanding anything to the contrary contained in
         the June 1996 Mortgages (including, without limitation, the provisions
         of Section 7.16 thereof), the maximum amount of indebtedness secured
         by the June 1996 Mortgages is hereby increased to $350,000,000.

                 (i)      All references in the June 1996 Mortgages to the
         "Credit Agreement" shall be deemed to be a reference to the "Credit
         Agreement" as defined herein.





                                       69
<PAGE>   76
                 (j)      All references in the June 1996 Mortgages to "Agent"
         shall be deemed to be a reference to "Administrative Agent" as defined
         herein.

                                      III.
                                 MISCELLANEOUS

         Section 3.1.     All of the respective liens, privileges, priorities
and equities existing and to exist under and in accordance with the terms of
the Mortgages are hereby renewed, extended, carried forward and conveyed as
security for the Obligations under and as defined in the Credit Agreement.

         Section 3.2.     Except as  amended hereby, each of the Mortgages
shall remain unchanged and in full force and effect, and Denbury hereby
RATIFIES, CONFIRMS and ADOPTS the Mortgages and all of their respective terms
and provisions, as amended hereby.  The Mortgages, as amended hereby, shall
inure to the benefit of the mortgagee and its permitted successors and assigns
and shall be binding upon Denbury and its respective successors and assigns
whether or not the signature of the mortgagee appears thereon or hereon.

         Section 3.3.     This Amendment is being executed in multiple
counterparts, each of which shall for all purposes be deemed to be an original
and all of which are identical.

         Section 3.4.     This Amendment shall be governed by, and construed in
accordance with, the laws of the State of Texas, excluding its conflict of laws
rules, except to the extent that the amendment or modification of the Mortgages
is mandatorily governed by the laws of the jurisdiction in which the properties
subject thereto are located.

         Section 3.5.     Denbury  attaches to counterparts hereof being
recorded in Louisiana certified resolutions of its Board of Directors
authorizing the execution and delivery of this Amendment.





                                       70
<PAGE>   77
         IN WITNESS WHEREOF, this instrument has been executed in multiple
counterparts on the 29th day of December, 1997, and the effective date hereof
shall be December 29, 1997.

         THUS DONE AND PASSED this 29th day of December, 1997, in my presence
and in the presence of the undersigned competent witnesses who hereunto sign
their names with Administrative Agent and me, Notary, after reading of the
whole.

<TABLE>
<S>                                                <C>
WITNESSES:                                         NATIONSBANK OF TEXAS, N.A.,
- ----------                                                                    
                                                            as Administrative Agent for the Banks
By:                                                         under the Credit Agreement and as Agent for
   ----------------------------------------                                                            
Name:                                                       the Banks under the Existing Credit
     --------------------------------------                                                    
                                                            Agreement

By:                                        
   ----------------------------------------
Name:                                                       By:                                                    
     --------------------------------------                    ----------------------------------------------------
                                                                    Name:    J. Scott Fowler
                                                                    Title:   Vice President
</TABLE>


                 -----------------------------------------------
                                 NOTARY PUBLIC


         THUS DONE AND PASSED this 29th day of December, 1997, in my presence
and in the presence of the undersigned competent witnesses who hereunto sign
their names with Denbury Management, Inc. and me, Notary, after reading of the
whole.

<TABLE>
<S>                                                <C>
WITNESSES:                                         DENBURY MANAGEMENT, INC.,
- ----------                                                                  

By:                                        
   ----------------------------------------
Name:                                                       By:                                              
     --------------------------------------                    ----------------------------------------------
                                                            Name:   Phil Rykhoek
By:                                                         Title:  Chief Financial Officer and
   ----------------------------------------                         Secretary                  
Name:                                                                        
     --------------------------------------                                  
</TABLE>


                 -----------------------------------------------
                                 NOTARY PUBLIC
<PAGE>   78
                    ACKNOWLEDGMENTS FOR ADMINISTRATIVE AGENT

STATE OF TEXAS            Section
                          Section
COUNTY OF DALLAS          Section

MISSISSIPPI

         Personally appeared before me, the undersigned authority in and for
said county and state, on this 29th day of December, 1997, within my
jurisdiction, the within named J. Scott Fowler, who acknowledged that he is the
Vice President of NationsBank of Texas, N.A., a national banking association
and that for and on behalf of said national association as its act and deed, he
executed the above and foregoing instrument, after first having been duly
authorized by said national association to do so.

LOUISIANA

         Be it known, that on this 29th day of the month of December, 1997,
before me, the undersigned authority, personally came and appeared J. Scott
Fowler, to me personally known and known to me to be the person whose genuine
signature is affixed to the foregoing document as the Vice President of
NationsBank of Texas, N.A., who signed said document before me in the presence
of the two witnesses, whose names are thereto subscribed as such, being
competent witnesses, and who acknowledged, in my presence and in the presence
of said witnesses, that he signed the above and foregoing document as his own
free act and deed on behalf of such national association by authority of its
board of directors and as the free act and deed of such national association
and for the uses and purposes therein set forth and apparent.

         IN WITNESS WHEREOF, the said appearer has signed those presents,
together with the said witnesses, and I have hereunto affixed my hand and seal
on the day and date first above written.

TEXAS

         Before me, a notary public in and for said county and state, on this
29th day of December, 1997, personally appeared J. Scott Fowler, Vice President
of NationsBank of Texas, N.A., a national banking association, to me known to
be the identical person who subscribed the name of Agent and Administrative
Agent to the foregoing instrument as Vice President of NationsBank of Texas,
N.A., and acknowledged to me that he executed the same as his free and
voluntary act and deed, and as the free and voluntary act and deed of such
association, for the uses and purposes therein set forth.

         GIVEN UNDER MY HAND AND SEAL OF OFFICE, this 29th day of December,
1997.


[SEAL]
                                                  ______________________________
                                                  Notary Public, State of Texas

My commission expires:
__________________________________
<PAGE>   79
                          ACKNOWLEDGMENTS FOR DENBURY

STATE OF TEXAS            Section
                          Section
COUNTY OF DALLAS          Section

MISSISSIPPI

         Personally appeared before me, the undersigned authority in and for
said county and state, on this 29th day of December, 1997, within my
jurisdiction, the within named Phil Rykhoek,  who acknowledged that he is the
Chief Financial Officer and Secretary of Denbury Management, Inc., a Texas
corporation and that for and on behalf of said corporation, as its act and
deed, he executed the above and foregoing instrument, after first having been
duly authorized by said corporation to do so.

LOUISIANA

         Be it known, that on this 29th day of the month of December, 1997,
before me, the undersigned authority, personally came and appeared Phil
Rykhoek, to me personally known and known to me to be the person whose genuine
signature is affixed to the foregoing document as the Chief Financial Officer
and Secretary of Denbury Management, Inc., who signed said document before me
in the presence of the two witnesses, whose names are thereto subscribed as
such, being competent witnesses, and who acknowledged, in my presence and in
the presence of said witnesses, that he signed the above and foregoing document
as his own free act and deed on behalf of such corporation by authority of its
board of directors and as the free act and deed of such corporation and for the
uses and purposes therein set forth and apparent.

         IN WITNESS WHEREOF, the said appearer has signed those presents,
together with the said witnesses, and I have hereunto affixed my hand and seal
on the day and date first above written.

TEXAS

         Before me, a notary public in and for said county and state, on this
29th day of December, 1997, personally appeared Phil Rykhoek, Chief Financial
Officer and Secretary of Denbury Management, Inc., a Texas corporation, to me
known to be the identical person who subscribed the name of the maker hereof to
the foregoing instrument as Chief Financial Officer and Secretary of Denbury
Management, Inc., and acknowledged to me that he executed the same as his free
and voluntary act and deed, and as the free and voluntary act and deed of such
corporation, for the uses and purposes therein set forth.

         GIVEN UNDER MY HAND AND SEAL OF OFFICE, this 29th day of December,
1997.

[SEAL]
                                                  ______________________________
                                                  Notary Public, State of Texas

My commission expires:_____________________________
<PAGE>   80
                                   EXHIBIT B

                                    GUARANTY


         THIS GUARANTY (this "Guaranty") is dated as of the ____ day of
December, 1997, by Denbury Resources, Inc., a corporation incorporated under
the Canadian Business Corporations Act  ("Guarantor"), in favor of NATIONSBANK
OF TEXAS, N.A., and each of its successors and assigns as permitted pursuant to
Section 14.10 of the Credit Agreement (NationsBank of Texas, N.A. [acting as
Bank but not as Administrative Agent], and each of its successors and assigns
are collectively referred to herein as "Noteholders").

                              W I T N E S S E T H:

         WHEREAS, Denbury Management, Inc., a Texas corporation ("Borrower"),
Guarantor, Noteholders, and NationsBank of Texas, N.A., as Administrative Agent
("Administrative Agent") are parties to that certain First Restated Credit
Agreement (the "Credit Agreement") dated as of December 29, 1997, pursuant to
which Noteholders have agreed to (i) make a revolving credit loan to Borrower,
and (ii) issue and participate in Letters of Credit issued on behalf of
Borrower and certain of its Subsidiaries (unless otherwise defined herein, all
terms used herein with their initial letter capitalized shall have the meaning
given such terms in the Credit Agreement); and

         WHEREAS, Guarantor is the sole shareholder of Borrower; and

         WHEREAS, Noteholders have required, as a condition to making the
Revolving Loan and issuing and participating in Letters of Credit to be issued
under the Credit Agreement, that Guarantor execute and deliver this Guaranty;
and

         WHEREAS, Guarantor has determined that valuable benefits will be
derived by it as a result of the Credit Agreement and the Revolving Loan to be
made by Banks and Letters of Credit to be issued thereunder; and

         WHEREAS, Guarantor has further determined that the benefits accruing
to it from the Credit Agreement exceed Guarantor's anticipated liability under
this Guaranty.

         NOW, THEREFORE, for valuable consideration, the receipt and
sufficiency of which are hereby acknowledged and confessed, Guarantor hereby
covenants and agrees as follows:

         1.      Guarantor hereby absolutely and unconditionally guarantees the
prompt, complete and full payment when due, no matter how such shall become
due, of the Obligations, and further guarantees that Borrower will properly and
timely perform the Obligations.

         2.      If Guarantor is or becomes liable for any indebtedness owing
by Borrower to Noteholders by endorsement or otherwise than under this
Guaranty, such liability shall not be in any manner impaired or affected
hereby, and the rights of Noteholders hereunder shall be





<PAGE>   81
cumulative of any and all other rights that Noteholders may ever have against
Guarantor.  The exercise by Noteholders of any right or remedy hereunder or
under any other instrument, at law or in equity, shall not preclude the
concurrent or subsequent exercise of any other right or remedy.

         3.      In the event of default by Borrower in payment of the
Obligations, or any part thereof, when such Obligations become due, either by
their terms or as the result of the exercise of any power to accelerate,
Guarantor shall, on demand, and without further notice of dishonor and without
any notice having been given to Guarantor previous to such demand of the
acceptance by Noteholders of this Guaranty, and without any notice having been
given to such Guarantor previous to such demand of the creating or incurring of
such Obligations, pay the amount due thereon to Noteholders at the
Administrative Agent's office as set forth in the Credit Agreement, and it
shall not be necessary for any Noteholder, in order to enforce such payment by
Guarantor, first, to institute suit or exhaust its remedies against Borrower or
others liable on such Obligations, to have Borrower joined with Guarantor in
any suit brought under this Guaranty or to enforce their rights against any
security which shall ever have been given to secure such indebtedness;
provided, however, that in the event Noteholders elect to enforce and/or
exercise any remedies they may possess with respect to any security for the
Obligations prior to demanding payment from Guarantor, Guarantor shall
nevertheless be obligated hereunder for any and all sums still owing to
Noteholders on the Obligations and not repaid or recovered incident to the
exercise of such remedies.

         4.      Notice to Guarantor of the acceptance of this Guaranty and of
the making, renewing or assignment of the Obligations and each item thereof,
are hereby expressly waived by Guarantor.

         5.      Each payment on the Obligations shall be deemed to have been
made by Borrower unless express written notice is given to Administrative Agent
at the time of such payment that such payment is made by Guarantor as specified
in such notice.

         6.      If all or any part of the Obligations at any time are secured,
Guarantor agrees that Noteholders may at any time and from time to time, at
their discretion and with or without valuable consideration, allow substitution
or withdrawal of collateral or other security and release collateral or other
security or compromise or settle any amount due or owing under the Credit
Agreement or amend or modify in whole or in part the Credit Agreement or any
Loan Papers executed in connection with same without impairing or diminishing
the obligations of Guarantor hereunder.  Guarantor further agrees that if
Borrower executes in favor of Noteholders any collateral agreement, mortgage or
other security instrument, the exercise by Noteholders of any right or remedy
thereby conferred on Noteholders shall be wholly discretionary with
Noteholders, and that the exercise or failure to exercise any such right or
remedy shall in no way impair or diminish the obligation of Guarantor
hereunder.  Guarantor further agrees that Noteholders and Administrative Agent
shall not be liable for their failure to use diligence in the collection of the
Obligations or in preserving the liability of any person liable for the
Obligations, and Guarantor hereby waives presentment for payment, notice of
nonpayment, protest and notice thereof (including, notice of acceleration), and
diligence in bringing suits against any Person liable on the Obligations, or
any part thereof.





<PAGE>   82
         7.      Guarantor agrees that Noteholders, in their discretion, may
(i) bring suit against all guarantors (including, without limitation, Guarantor
hereunder) of the Obligations jointly and severally or against any one or more
of them, (ii) compound or settle with any one or more of such guarantors for
such consideration as the Noteholders may deem proper, and (iii) release one or
more of such guarantors from liability hereunder, and that no such action shall
impair the rights of Noteholders to collect the Obligations (or the unpaid
balance thereof) from other such guarantors of the Obligations, or any of them,
not so sued, settled with or released. Guarantor agrees, however, that nothing
contained in this paragraph, and no action by Noteholders permitted under this
paragraph, shall in any way affect or impair the rights or obligations of such
guarantors among themselves.

         8.      Guarantor represents and warrants to Noteholders that (i)
Guarantor is a corporation duly organized and validly existing under the laws
of the jurisdiction of its incorporation or formation; and (ii) Guarantor
possesses all requisite authority and power to authorize, execute, deliver and
comply with the terms of this Guaranty; this Guaranty has been duly authorized
and approved by all necessary action on the part of Guarantor and constitutes a
valid and binding obligation of Guarantor enforceable in accordance with its
terms, except as the enforcement thereof may be limited by applicable Debtor
Relief Laws; and no approval or consent of any court or governmental entity is
required for the authorization, execution, delivery or compliance with this
Guaranty which has not been obtained (and copies thereof delivered to
Noteholders).  As used in this Paragraph 8, "Debtor Relief Laws" means all
applicable bankruptcy, liquidation, conservatorship, bankruptcy, moratorium,
rearrangement, receivership, insolvency, reorganization, suspension of payments
or similar debtor relief laws from time to time in effect affecting the rights
of creditors generally.

         9.      [Intentionally Deleted]

         10.     This Guaranty is for the benefit of the Noteholders, their
successors and assigns, and in the event of an assignment by Noteholders (or
their successors or assigns) of the Obligations, or any part thereof, the
rights and benefits hereunder, to the extent applicable to the Obligations so
assigned, may be transferred with such Obligations.  This Guaranty is binding
upon Guarantor and its successors and assigns.

         11.     No modification, consent, amendment or waiver of any provision
of this Guaranty, nor consent to any departure by Guarantor therefrom, shall be
effective unless the same shall be in writing and signed by Required Banks (or
to the extent required by the Credit Agreement, all "Banks"), and then shall be
effective only in the specific instance and for the purpose for which given.
No notice to or demand on Guarantor in any case shall, of itself, entitle
Guarantor to any other or further notice or demand in similar or other
circumstances.  No delay or omission by Noteholders in exercising any power or
right hereunder shall impair any such right or power or be construed as a
waiver thereof or any acquiescence therein, nor shall any single or partial
exercise of any such power preclude other or further exercise thereof, or the
exercise of any other right or power hereunder.  All rights and remedies of
Noteholders hereunder are cumulative of each other and of every other right or
remedy which Noteholders may otherwise have at law or in equity or under any
other contract or document, and the





<PAGE>   83
exercise of one or more rights or remedies shall not prejudice or impair the
concurrent or subsequent exercise of other rights or remedies.

         12.     No provision herein or in any promissory note, instrument or
any other Loan Paper executed by Borrower or Guarantor evidencing the
Obligations shall require the payment or permit the collection of interest in
excess of the Maximum Lawful Rate.  If any excess of interest in such respect
is provided for herein or in any such promissory note, instrument, or any other
Loan Paper, the provisions of this paragraph shall govern, and neither Borrower
nor Guarantor shall be obligated to pay the amount of such interest to the
extent that it is in excess of the amount permitted by law.  The intention of
the parties being to conform strictly to any applicable federal or state usury
laws now in force, all promissory notes, instruments and other Loan Papers
executed by Borrower or Guarantor evidencing the Obligations shall be held
subject to reduction to the amount allowed under said usury laws as now or
hereafter construed by the courts having jurisdiction.

         13.     If Guarantor should breach or fail to perform any provision of
this Guaranty, Guarantor agrees to pay Noteholders all costs and expenses
(including court costs and reasonable attorneys fees) incurred by Noteholders
in the enforcement hereof.

         14.     (a)  The liability of Guarantor under this Guaranty shall in
no manner be impaired, affected or released by the insolvency, bankruptcy,
making of an assignment for the benefit of creditors, arrangement,
compensation, composition or readjustment of Borrower, or any proceedings
affecting the status, existence or assets of Borrower or other similar
proceedings instituted by or against Borrower and affecting the assets of
Borrower.

                 (b)  Guarantor acknowledges and agrees that any interest on
any portion of the Obligations which accrues after the commencement of any
proceeding referred to in clause (a) above (or, if interest on any portion of
the Obligations ceases to accrue by operation of law by reason of the
commencement of said proceeding, such interest as would have accrued on such
portion of the Obligations if said proceedings had not been commenced) shall be
included in the Obligations because it is the intention of Guarantor and
Administrative Agent that the Obligations which are guaranteed by Guarantor
pursuant to this Guaranty should be determined without regard to any rule of
law or order which may relieve Borrower of any portion of such Obligations.
Guarantor will permit any trustee in bankruptcy, receiver, debtor in
possession, assignee for the benefit of creditors or similar person to pay
Administrative Agent, or allow the claim of Administrative Agent in respect of,
any such interest accruing after the date on which such proceeding is
commenced.

                 (c)  In the event that all or any portion of the Obligations
are paid by Borrower, the obligations of Guarantor hereunder shall continue and
remain in full force and effect or be reinstated, as the case may be, in the
event that all or any part of such payment(s) are rescinded or recovered
directly or indirectly from Administrative Agent or any Bank as a preference,
fraudulent transfer or otherwise, and any such payments which are so rescinded
or recovered shall constitute Obligations for all purposes under this Guaranty.





<PAGE>   84
         15.     Guarantor understands and agrees that any amounts of Guarantor
on account with Noteholders may be offset to satisfy the obligations of
Guarantor hereunder.

         16.     Guarantor hereby subordinates and makes inferior any and all
indebtedness now or at any time hereafter owed by Borrower to Guarantor to the
Obligations evidenced by the Credit Agreement and agrees after the occurrence
of a Default under the Credit Agreement, or any event which with notice, lapse
of time, or both, would constitute a Default under the Credit Agreement, not to
permit Borrower to repay, or to accept payment from Borrower of, such
indebtedness or any part thereof without the prior written consent of
Noteholders.

         17.     Guarantor hereby waives any and all rights of subrogation to
which Guarantor may otherwise be entitled against Borrower, or any other
guarantor of the Obligations, as a result of any payment made by Guarantor
pursuant to this Guaranty.

         18.     If any provision of this Guaranty is held to be illegal,
invalid, or unenforceable, such provision shall be fully severable; this
Guaranty shall be construed and enforced as if such illegal, invalid, or
unenforceable provision had never comprised a part hereof; and the remaining
provisions hereof shall remain in full force and effect and shall not be
affected by the illegal, invalid, or unenforceable provision or by its
severance herefrom.  Furthermore, in lieu of such illegal, invalid, or
unenforceable provision there shall be added automatically as a part of this
Guaranty a provision as similar in terms to such illegal, invalid, or
unenforceable provision as may be possible and be legal, valid and enforceable.

         19.     (a)      Guarantor hereby irrevocably submits to the
nonexclusive jurisdiction of any Texas state or federal court over any action
or proceeding arising out of or relating to this Guaranty or any other Loan
Paper, and Guarantor hereby irrevocably agrees that all claims in respect of
such action or proceeding may be heard and determined in such Texas state or
federal court.  Guarantor hereby irrevocably waives, to the fullest extent
permitted by Law, any objection which it may now or hereafter have to the
laying of venue of any Litigation arising out of or in connection with this
Guaranty or any of the Loan Papers brought in district courts of Dallas County,
Texas, or in the United States District Court for the Northern District of
Texas, Dallas Division.  Guarantor hereby irrevocably waives any claim that any
Litigation brought in any such court has been brought in an inconvenient forum.
Guarantor hereby irrevocably consents to the service of process out of any of
the aforementioned courts in any such Litigation by the mailing of copies
thereof by certified mail, return receipt requested, postage prepaid, to
Guarantor's office at 17304 Preston Road, Suite 510, Dallas, Texas 75252.
Guarantor irrevocably agrees that any legal proceeding against Noteholders
shall be brought in the district courts of Dallas County, Texas, or in the
United States District Court for the Northern District of Texas, Dallas
Division.  Nothing herein shall affect the right of Noteholders to commence
legal proceedings or otherwise proceed against Guarantor in any jurisdiction or
to serve process in any manner permitted by applicable law.  As used herein,
the term "Litigation" means any proceeding, claim, lawsuit or investigation (i)
conducted or threatened by or before any court or governmental department,
commission, board, bureau, agency or instrumentality of the United States or of
any state, commonwealth, nation, territory, possession, county, parish, or
municipality, whether now or hereafter constituted or existing, or (ii) pending
before any public or private arbitration board or panel.





<PAGE>   85
                 (b)      Nothing in this Paragraph 19 shall affect any right
of the Noteholders to serve legal process in any other manner permitted by law
or affect the right of any Noteholder to bring any action or proceeding against
Guarantor in the courts of any other jurisdictions.

                 (c)      To the extent that Guarantor has or hereafter may
acquire any immunity from jurisdiction of any court or from any legal process
(whether through service or notice, attachment prior to judgment, attachment in
aid of execution, execution or otherwise) with respect to itself or its
property, Guarantor hereby irrevocably waives such immunity in respect of its
obligations under this Guaranty and the other Loan Papers.

         20.     THIS GUARANTY AND THE OTHER LOAN PAPERS COLLECTIVELY REPRESENT
THE FINAL AGREEMENT BY AND AMONG THE NOTEHOLDERS, ADMINISTRATIVE AGENT AND THE
GUARANTOR AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR
SUBSEQUENT ORAL AGREEMENTS OF THE NOTEHOLDERS, ADMINISTRATIVE AGENT AND THE
GUARANTOR.  THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE NOTEHOLDERS,
ADMINISTRATIVE AGENT AND THE GUARANTOR.

         21.     GUARANTOR, FOR ITSELF, ITS SUCCESSORS AND ASSIGNS, AND THE
NOTEHOLDERS HEREBY IRREVOCABLY WAIVE, TO THE FULLEST EXTENT PERMITTED BY LAW,
THEIR RIGHT TO A JURY TRIAL, IN ANY LITIGATION ARISING OUT OF OR IN CONNECTION
WITH THIS GUARANTY OR ANY OF THE OTHER LOAN PAPERS.

         22.     THIS GUARANTY AND THE OTHER LOAN PAPERS HAVE BEEN EXECUTED AND
DELIVERED IN THE STATE OF TEXAS AND SHALL BE CONSTRUED IN ACCORDANCE WITH AND
GOVERNED BY THE LAWS OF THE STATE OF TEXAS AND THE LAWS OF THE UNITED STATES OF
AMERICA, EXCEPT TO THE EXTENT THAT THE LAWS OF ANY STATE IN WHICH ANY PROPERTY
INTENDED AS SECURITY FOR THE OBLIGATIONS IS LOCATED NECESSARILY GOVERN (A) THE
PERFECTION AND PRIORITY OF THE LIENS IN FAVOR OF ADMINISTRATIVE AGENT AND BANKS
WITH





<PAGE>   86
RESPECT TO SUCH PROPERTY, AND (B) THE EXERCISE OF ANY REMEDIES (INCLUDING
FORECLOSURE) WITH RESPECT TO SUCH PROPERTY.

         EXECUTED and effective as of the date first above written.

                                  GUARANTOR:
                                  
                                  DENBURY RESOURCES, INC.
                                  
                                  
                                  
                                  By:                                          
                                     ------------------------------------------
                                  Name:   Gareth Roberts                       
                                  Title:  President and Chief Executive Officer
                                                                               
                                                                               
                                                                               
                                  By:                                          
                                     ------------------------------------------
                                  Name:   Phil Rykhoek                         
                                  Title:  Chief Financial Officer and Secretary





<PAGE>   87
                                   EXHIBIT C

                                      NOTE


$_______________                 Dallas, Texas                  ________, 1997


         FOR VALUE RECEIVED, the undersigned, Denbury Management, Inc., a Texas
corporation ("Maker"), promises to pay to the order of [Name of Bank or Lending
Office] ("Payee"), at the offices of NationsBank of Texas, N.A., as
Administrative Agent (herein so called), at 901 Main Street, 64th Floor,
Dallas, Texas 75202, for Payee, the principal sum of [Amount of such Bank's
Commitment] ($___________), or so much thereof as may be advanced and
outstanding, together with interest, as hereinafter described.

         This Note has been executed and delivered pursuant to, and is subject
to and governed by, the terms of that certain First Restated Credit Agreement
dated as of December 29, 1997 (as hereafter renewed, extended, amended, or
supplemented, the "Agreement") among Maker, Denbury Resources, Inc., as
Guarantor, Payee, Administrative Agent, and the Banks named therein, and is one
of the "Notes" referred to therein.  Unless otherwise defined herein or unless
the context hereof otherwise requires, each term used herein with its initial
letter capitalized has the meaning given to such term in the Agreement.

         Maker also promises to pay interest on the unpaid principal amount
hereof in like money at the offices of Administrative Agent above referenced
from the date hereof at the rates applicable to amounts outstanding under the
Revolving Loan provided in the Agreement and on the dates specified in the
Agreement.

         The principal balance of this Note shall be paid at the times and in
the amounts required by the Agreement.  The entire outstanding principal
balance hereof and all accrued but unpaid interest thereon shall be due and
payable in full on the Termination Date.

         Upon and subject to the terms and conditions of the Agreement, Maker
shall be entitled to prepay the principal of or interest on this Note from time
to time and at any time, in whole or in part.

         Upon the occurrence and continuance of an Event of Default, and upon
the conditions stated in the Agreement, Administrative Agent may, at its
option, and shall, to the extent required in accordance with the terms of the
Agreement, declare the entire unpaid principal of and accrued interest on this
Note immediately due and payable (provided that, upon the occurrence of certain
Events of Default, and upon the conditions stated in the Agreement, such
acceleration shall be automatic), without notice (except as otherwise required
by the Agreement), demand, or presentment, all of which are hereby waived, and
the holder hereof shall have the right to offset against this Note any sum or
sums owed by the holder hereof to Maker.  All past-due principal of and, to the
extent permitted by law, accrued interest on this




<PAGE>   88
Note shall, at the option of the holder hereof, bear interest at the lesser of
(a) the Maximum Lawful Rate or (b) the Base Rate plus 3% until paid from the
due date.

         Notwithstanding the foregoing, if at any time, any rate of interest
calculated under Section 2.5 of the Agreement (the "Contract Rate") exceeds the
Maximum Lawful Rate, the rate of interest hereunder shall be limited to the
Maximum Lawful Rate, but any subsequent reductions in the Contract Rate shall
not reduce the rate of interest on this Note below the Maximum Lawful Rate
until the total amount of interest accrued equals the amount of interest which
would have accrued (including the amount of interest which would have accrued
prior to the payment or prepayment of any portion of this Note) if the Contract
Rate had at all times been in effect.  In the event that at maturity (stated or
by acceleration), or at final payment of this Note, the total amount of
interest paid or accrued on this Note is less than the amount of interest which
would have accrued if the Contract Rate had at all times been in effect with
respect thereto, then at such time the Maker shall pay to the holder of this
Note an amount equal to the difference between (a) the lesser of the amount of
interest which would have accrued if the Contract Rate had at all times been in
effect and the amount of interest which would have accrued if the Maximum
Lawful Rate had at all times been in effect, and (b) the amount of interest
actually paid or accrued on this Note.

                                  DENBURY MANAGEMENT, INC.,
                                  a Texas corporation
                                  
                                  
                                  By:                                         
                                     -----------------------------------------
                                  Its:                                        
                                      ----------------------------------------




<PAGE>   89
                             LOANS, MATURITIES, AND
                       PAYMENTS OF PRINCIPAL AND INTEREST


<TABLE>
<CAPTION>
==================================================================================================================================
                      Payee's                         Rate of                                  
                    Commitment      Expiration        Interest        Amount of       Amount of        Unpaid
    Borrowing       Percentage     of Interest     Applicable to      Principal       Interest       Principal      Notation Made
       Date        of Borrowing       Period         Borrowing           Paid           Paid          Balance            By
==================================================================================================================================
<S>                <C>             <C>             <C>                <C>             <C>            <C>            <C>
   
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
==================================================================================================================================
</TABLE>


<PAGE>   90
                                   EXHIBIT D

                                PLEDGE AGREEMENT

         THIS PLEDGE AGREEMENT (this "Pledge Agreement") is dated as of the
____ day of December, 1997, by and between DENBURY RESOURCES, INC. ("Pledgor"),
and NATIONSBANK OF TEXAS, N.A., a national banking association, as
Administrative Agent for the Banks (as defined herein) (NationsBank of Texas,
N.A. in its capacity as Administrative Agent for the Banks is hereinafter
referred to as "Pledgee").


                              W I T N E S S E T H:


         WHEREAS, Pledgor, Denbury Management, Inc. ("Borrower"), Pledgee, and
the Banks parties to the Credit Agreement (as hereinafter defined) are parties
to that certain First Restated Credit Agreement (the "Credit Agreement") dated
as of December 29, 1997, pursuant to which Banks have agreed to (i) make a
revolving credit loan to Borrower, and (ii) issue and participate in Letters of
Credit for the account of Borrower and its Subsidiaries (unless otherwise
defined herein, all terms used herein with their initial letter capitalized
shall have the meaning given such terms in the Credit Agreement); and

         WHEREAS, it is a condition to the agreement of Banks to make the
Revolving Loan and issue and participate in Letters of Credit and Letter of
Credit Exposure under the Credit Agreement that Pledgor execute and deliver
this Pledge Agreement in favor of Pledgee.

         NOW, THEREFORE, for valuable consideration, receipt of which is hereby
acknowledged and confessed, Pledgor agrees with Pledgee as follows:

         1.      Pledge.  Upon the terms hereof, Pledgor hereby grants to
Pledgee, for the ratable benefit of each Bank and any holder from time to time
of the Notes, a security interest in and to the rights, titles and interests of
Pledgor in and to all of the following rights, interests and property:  (a) all
of the issued and outstanding shares of capital stock and other investment
property issued by Borrower, now owned or hereafter acquired, including,
without limitation, the shares of Borrower owned by Pledgor on the date hereof
(the "Pledged Shares"); and (b) any and all proceeds or other sums arising from
or by virtue of, and all dividends and distributions (cash or otherwise)
payable and/or distributable with respect to, all or any of the Pledged Shares
described in clause (a) preceding (the rights, interests and property described
in clauses (a) and (b) preceding are collectively referred to herein as the
"Collateral").

         2.      Secured Obligation.  The security interest herein granted (the
"Security Interest") shall secure payment and performance of the Obligations.

         3.      Representations and Warranties; Related Covenants.  Pledgor
represents, warrants, covenants and agrees to and with Administrative Agent,
for the benefit of each Bank, that:  (a) Pledgor is the legal and beneficial
owner of the Pledged Shares issued by Borrower;




<PAGE>   91
(b) the Pledged Shares are duly authorized and issued, fully paid and
non-assessable, and all documentary, stamp or other taxes or fees owing in
connection with the issuance, transfer and/or pledge thereof hereunder have
been paid; (c) no dispute, right of setoff, counterclaim or defense exists with
respect to all or any part of the Collateral; (d) the Collateral is free and
clear of all Liens, options, warrants, puts, calls or other rights of third
persons, and restrictions, other than (i) those Liens arising under this Pledge
Agreement or any other of the Loan Papers and Liens for Taxes not yet due and
payable, and (ii) restrictions on transferability imposed by applicable state
and federal securities laws; (e) Pledgor has full right and authority to pledge
the Pledged Shares and other Collateral for the purposes and upon the terms set
out herein; (f) certificates representing the Pledged Shares have been
delivered to Pledgee, together with a duly executed blank stock power with
signatures guaranteed, for each certificate; (g) the Pledged Shares constitute
all of the issued and outstanding capital stock of Borrower of every class; and
(h) Borrower has not issued, and there are not outstanding, any options,
warrants or other rights to acquire capital stock of Borrower.

         4.      Covenants.  (a) Pledgor covenants and agrees to, from time to
time, promptly execute and deliver to Pledgee all such other assignments,
certificates, supplemental writings and financing statements as Pledgee
reasonably requests in order to perfect or evidence the Security Interest.
Pledgor further agrees that if Pledgor shall at any time acquire any additional
shares of the capital stock or other investment property issued by Borrower,
and whether such acquisition shall be by purchase, exchange, reclassification,
dividend, or otherwise, Pledgor shall forthwith (and without the necessity for
any request or demand by Pledgee) deliver the certificates representing such
capital stock or investment property to Pledgee, in the same manner and with
the same effect as described in paragraphs 1 and 3 hereof.  Such capital stock
or investment property shall constitute "Pledged Shares" and "Collateral" and
shall be subject to the Liens herein created, for the purposes and upon the
terms and conditions set forth in this Pledge Agreement and the other Loan
Papers.  Pledgor further covenants and agrees that, without the prior written
consent of all Banks, Pledgor shall not (i) transfer any of Pledgor's rights,
titles or interests in and to the Collateral or any part thereof; or (ii)
create any other Lien or otherwise encumber any of the Collateral, or permit
any of the Collateral to ever be or become subject to any Lien, attachment,
execution, sequestration, other legal or equitable process or any Lien or
encumbrance of any kind, except the Security Interest.

         (b)     Pledgor will promptly execute and deliver, or cause the
execution and delivery of, all applications, certificates, instruments,
registration statements, and all other documents and papers Pledgee may
reasonably request in connection with the obtaining of any consent, approval,
registration, qualification, or authorization of any other Person necessary or
appropriate for the effective exercise of any rights under this Pledge
Agreement.  Without limiting the generality of the foregoing, Pledgor agrees
that in the event Pledgee shall exercise any rights to sell, transfer, or
otherwise dispose of, or vote, consent, or take any other action in connection
with any of the Collateral pursuant to this Pledge Agreement, Pledgor shall
execute and deliver all applications, certificates, and other documents as
Pledgee may reasonably request and shall otherwise promptly, fully and
diligently cooperate with Pledgee and any other necessary Persons, in making
any application for the prior consent or approval of any other Person to the
exercise by Pledgee of any rights relating to all or any of the Collateral.
Furthermore, because Pledgor agrees that Pledgee's remedies at law for failure
of




                                      86
<PAGE>   92
Pledgor to comply with the provisions of this paragraph 4(b) would be
inadequate and that such failure would not be adequately compensable in
damages, Pledgor agrees that the covenants of this paragraph 4(b) may be
specifically enforced.

         (c)     Pledgor will preserve, warrant, and defend the Liens created
hereby in the Collateral against the claims of all Persons whomsoever; will
maintain and preserve such Liens at all times as contemplated by the Loan
Papers; will not at any time assign, transfer, or otherwise dispose of its
right, title and interest in and to any of the Collateral; will not at any time
directly or indirectly create, assume, or suffer to exist any Lien, warrant,
put, option, or other rights of third Persons and restrictions, other than the
Liens created by this Pledge Agreement in and to the Collateral or any part
thereof; and will not do or suffer any matter or thing whereby the Liens
created by this Pledge Agreement in and to the Collateral might or could be
impaired.

         5.      Conversions; Etc.  Should the Collateral, or any part thereof,
ever be in any manner converted by Borrower into another property of the same
or another type or any money or other proceeds ever be paid or delivered to
Pledgor as a result of Pledgor's rights in the Collateral, then, in any such
event (except as otherwise provided herein), all such property, money and other
proceeds shall be and/or become part of the Collateral, and Pledgor covenants
forthwith to pay or deliver to Pledgee (as pledgeholder for the pro rata
benefit of each Bank as provided above) all of the same which is susceptible of
delivery; and at the same time, if any Bank deems it necessary and so requests,
Pledgor will properly endorse or assign the same to Pledgee (as pledgeholder
for the pro rata benefit of each Bank as provided above).  Without limiting the
generality of the foregoing, Pledgor hereby agrees that the shares of capital
stock or other investment property of the surviving corporation in any merger
or consolidation involving Borrower shall be deemed to constitute the same
property as the Collateral.  With respect to any such property of a kind
requiring an additional security agreement, financing statement or other
writing to perfect a security interest therein in favor of Pledgee (as
pledgeholder for the pro rata benefit of each Bank as provided above), Pledgor
will forthwith execute and deliver to Pledgee whatever any Bank shall deem
necessary or proper for such purpose.

         6.      No Duty to Fix or Preserve Rights.  Neither Pledgee nor any
Bank shall have any duty to fix or preserve rights against prior parties to the
Collateral or shall ever be liable for failure to use diligence to collect any
amount payable with respect to the Pledged Shares, or any part thereof, but
shall be liable only to account to Pledgor for what such Bank may actually
collect or receive thereon.

         7.      Rights of Parties Before and After the Occurrence of a
                 Default.

         (a)     Exercising Shareholder Rights Prior to a Default.  Unless and
until a Default shall occur,

                 (i)      Pledgor shall be entitled to receive all cash
                          dividends paid out of net income on a current basis
                          to Pledgor in respect of or attributable to the
                          Pledged Shares or other Collateral to the extent, but
                          only to the extent




                                      87
<PAGE>   93
                          permitted pursuant to the terms of the Credit
                          Agreement.  Notwithstanding the foregoing, Pledgee
                          shall be entitled to receive, whether or not a
                          Default has occurred, (A) any and all other
                          Distributions, including, but not limited to, stock
                          dividends, liquidating Distributions or other
                          Distributions in property made on or with respect to
                          the Pledged Shares or any other Collateral and any
                          proceeds of Collateral, whether resulting from
                          subdivision, combination, or reclassification of the
                          outstanding capital stock or other investment
                          property issued by Borrower or as a result of any
                          merger, consolidation, acquisition, or other exchange
                          of assets (whether or not permitted by any Loan
                          Paper), or to which Borrower is a party, and (B) all
                          sums paid on any Collateral upon liquidation or
                          dissolution or reduction of capital, repurchase,
                          retirement, or redemption.  All such sums, dividends,
                          distributions, proceeds, or other property described
                          in clauses (A) and (B) preceding shall, if received
                          by any Person other than Pledgee, be held in trust
                          for the benefit of Pledgee and shall forthwith be
                          delivered to Pledgee (accompanied by proper
                          instruments of assignment and/or stock and/or bond
                          powers executed by Pledgor in accordance with
                          Pledgee's instructions) to be held subject to the
                          terms of this Pledge Agreement.  Any cash proceeds of
                          the Collateral, other than cash dividends which
                          Pledgor is then permitted to receive and retain under
                          the Loan Papers, which come into the possession of
                          Pledgee may, at Pledgee's option, be applied in whole
                          or in part to the Obligations (to the extent then
                          due), be released in whole or in part to or on the
                          written instructions of Pledgor for any general or
                          specific purpose otherwise permitted by the Loan
                          Papers, or be retained in whole or in part by Pledgee
                          as additional security for the payment and
                          performance of the Obligations.  All interest and
                          other amounts earned from any investment of such
                          proceeds may be dealt with by Pledgee in the same
                          manner as other cash proceeds; and

                 (ii)     Pledgor shall have the right to vote and give
                          consents with respect to all of the Collateral and to
                          consent to, ratify, or waive notice of any and all
                          meetings; provided that such right shall in no case
                          be exercised for any purpose contrary to, or in
                          violation of, any of the terms or the provisions of
                          this Pledge Agreement, the Credit Agreement, or any
                          other Loan Paper.

         (b)     Exercising Shareholder Rights After the Occurrence of a
Default.  Upon the occurrence of a Default and the acceleration of the
Obligations under the Credit Agreement, Pledgee, without the consent of
Pledgor, may:

              (i)         At any time vote or consent in respect of any of the
                          Pledged Shares and authorize any Pledged Shares to be
                          voted and such consents to be given, ratify and waive
                          notice of any and all meetings, and take such other
                          action as shall seem desirable to Pledgee, in its
                          discretion, to protect or further the interests of
                          Banks and Pledgee in respect of any of the



                                      88

<PAGE>   94
                          Collateral as though it were the outright owner
                          thereof, and Pledgor hereby irrevocably constitutes
                          and appoints Pledgee its sole proxy and
                          attorney-in-fact, with full power of substitution to
                          vote and act with respect to any and all Pledged
                          Shares standing in the name of Pledgor or with
                          respect to which Pledgor is entitled to vote and act.
                          The proxy and power of attorney herein granted are
                          coupled with interests, are irrevocable, and shall
                          continue throughout the term of this Pledge
                          Agreement;

             (ii)         In respect of any Pledged Shares, join in and become
                          a party to any plan of recapitalization,
                          reorganization, or readjustment (whether voluntary or
                          involuntary) as shall seem desirable to Pledgee in
                          respect of any such Pledged Shares, and deposit any
                          such Pledged Shares under any such plan; make any
                          exchange, substitution, cancellation, or surrender of
                          such Pledged Shares required by any such plan and
                          take such action with respect to any such Pledged
                          Shares as may be required by any such plan or for the
                          accomplishment thereof; and no such disposition,
                          exchange, substitution, cancellation, or surrender
                          shall be deemed to constitute a release of Pledged
                          Shares from the Lien of this Pledge Agreement; and

            (iii)         Receive all payments of whatever kind made upon or
                          with respect to any Collateral.

         (c)     Right of Sale After the Occurrence of a Default.  Upon the
occurrence of a Default and the acceleration of the Obligations under the
Credit Agreement, Pledgee may sell, without recourse to judicial proceedings,
with the right (except at private sale) to bid for and buy, free from any right
of redemption, the Pledged Shares or any part thereof, upon five (5) days'
notice (which notice is agreed to be reasonable notice for the purposes hereof)
to Pledgor of the time and place of sale, for cash, upon credit or for future
delivery, at Pledgee's option and in Pledgee's complete discretion:

              (i)         At public sale, including a sale at any broker's
                          board or exchange;

             (ii)         At private sale in any manner which will not require
                          the Pledged Shares, or any part thereof, to be
                          registered in accordance with The Securities Act of
                          1933 (as amended, the "Act") or the rules and
                          regulations promulgated thereunder, or any other law
                          or regulation, at the best price reasonably
                          obtainable by Pledgee at any such private sale or
                          other disposition in the manner mentioned above.
                          Pledgee is also hereby authorized, but not obligated,
                          to take such actions, give such notices, obtain such
                          consents, and do such other things as Pledgee may
                          deem required or appropriate in the event of sale or
                          disposition of any of the Pledged Shares.  Pledgor
                          understands that Pledgee may in its discretion
                          approach a restricted number of potential purchasers
                          and that a sale under such circumstances may yield a
                          lower price for the Pledged Shares, or any portion
                          thereof, than  would otherwise be obtainable if the
                          same




                                      89
<PAGE>   95
                          were registered and sold in the open market.  Pledgor
                          agrees (a) that in the event Pledgee shall so sell
                          the Pledged Shares, or any portion thereof, at such
                          private sale or sales, Pledgee shall have the right
                          to rely upon the advice and opinion of any member
                          firm of a national securities exchange as to the best
                          price reasonably obtainable upon such a private sale
                          thereof (any expense borne by Pledgee in obtaining
                          such advice to be paid by Pledgor as an expense
                          related to the exercise by Pledgee of its rights
                          hereunder), and (B) that such reliance shall be
                          conclusive evidence that Pledgee handled such matter
                          in a commercially reasonable manner.

         In case of any sale by the Pledgee of the Pledged Shares on credit or
for future delivery, the Pledged Shares sold may be retained by Pledgee until
the selling price is paid by the purchaser, but Pledgee shall incur no
liability in case of failure of the purchaser to take up and pay for the
Pledged Shares so sold.  In case of any such failure, such Pledged Shares so
sold may be again similarly sold.

         In connection with the sale of the Pledged Shares, Pledgee is
authorized, but not obligated, to limit prospective purchasers to the extent
deemed necessary or desirable by Pledgee to render such sale exempt from the
registration requirements of the Act, and any applicable state securities laws,
and no sale so made in good faith by Pledgee shall be deemed not to be
"commercially reasonable" because so made.  If Pledgee determines to exercise
its right to sell all or any of the Pledged Shares, and if in the opinion of
Gardere & Wynne, L.L.P. or such other reputable law firm selected by Pledgee
("Law Firm"), it is necessary or advisable to have such securities registered
under the provisions of such Act, or any similar law relating to the
registration of securities, Pledgor agrees, at its own expense, to (i) execute
and deliver all such instruments and documents, and to do or cause to be done
other such acts and things as may be necessary or, in the opinion of Law Firm,
advisable to register such securities under the provisions of such Act or any
applicable similar law relating to the registration of securities, and Pledgor
will use its best efforts to cause the registration statement relating thereto
to become effective and to remain effective for such period as Pledgee shall
reasonably request, and to make all amendments thereof and/or to the related
prospectus which, in the opinion of Law Firm, are necessary or desirable, all
in conformity with the requirements of such Act and the rules and regulations
of the Securities and Exchange Commission applicable thereto; (ii) use its best
efforts to qualify such securities under state "blue sky" or securities laws
and to obtain the necessary approval of any Tribunal (as hereinafter defined)
to the sale of such securities, all as reasonably requested by Pledgee; and
(iii) at the request of Pledgee, indemnify and hold harmless, and to cause the
other Credit Parties to agree to indemnify and hold harmless, Pledgee, each
Bank, any underwriters (and any Person controlling any of the foregoing), and
their respective employees, officers, agents, attorneys, and accountants
(collectively, the "Indemnified Parties") from and against any loss, liability,
claim, damage and expense (including without limitation, reasonable fees of
counsel incurred in connection therewith) under such Act or otherwise, insofar
as such loss, liability, claim, damage or expense arises out of or is based
upon any untrue statement or alleged untrue statement of any material fact
contained in any registration statement under which such securities were
registered under such Act or other securities laws, any preliminary prospectus
or final prospectus contained therein, or any amendment or supplement thereto,
or arise out of or are based upon




                                      90
<PAGE>   96
any omission or any alleged omission to state therein a material fact required
to be stated or necessary to make the statements therein not misleading, such
indemnification to remain operative regardless of any investigation made by or
on behalf of any Indemnified Party; provided that Pledgor shall not be liable
in any case to the extent that any such loss, liability, claim, damage, or
expense arises out of or is based upon any untrue statement or alleged untrue
statement or an omission or an alleged omission made in reliance upon and in
conformity with written information furnished to Pledgor and/or the other
Credit Parties by an Indemnified Party.  As used in this Paragraph 7(c), the
term "Tribunal" means any court or governmental department, commission, board,
bureau, agency or instrumentality of the United State or of a state,
commonwealth, nation, territory, possession, county, parish, or municipality,
whether now or hereinafter constituted or existing.

         (d)     Other Rights After a Default.  Upon the occurrence of a
Default and the acceleration of the Obligations under the Credit Agreement,
Pledgee, at its election (but subject to the terms and conditions of the Credit
Agreement) may exercise any and all rights available to a secured party under
the Uniform Commercial Code as enacted in the State of Texas or other
applicable jurisdiction, as amended, in addition to any and all other rights
afforded by the Loan Papers, at law, in equity, or otherwise.

         (e)     Application of Proceeds.  Pledgee shall apply the proceeds of
any sale or other disposition of the Pledged Shares in the manner provided in
the Credit Agreement.

         8.      Notices.  Whenever this Pledge Agreement requires or permits
any consent, approval, notice, request, or demand from one party to another,
the consent, approval, notice, request, or demand must be given in the manner
provided in Section 14.1 of the Credit Agreement.

         9.      Right to File as Financing Statement.  Pledgee or any Bank
shall have the right at any time to execute and file this Pledge Agreement as a
financing statement, but the failure of Pledgee or any Bank to do so shall not
impair the validity or enforceability of this Pledge Agreement.

         10.     Waiver of Certain Rights.  (a)  To the full extent that it may
lawfully so agree, Pledgor agrees that it will not at any time plead, claim or
take the benefit of any appraisement, valuation, stay, extension, moratorium or
redemption law now or hereafter in force in order to prevent or delay the
enforcement of this Pledge Agreement, or the absolute sale of all or any part
of the Pledges Shares or the possession thereof by any purchaser at any sale
hereunder, and Pledgor hereby waives the benefit of all such laws to the extent
it lawfully may.  Each right, power and remedy of Pledgee provided for in this
Pledge Agreement or now or hereafter existing at law or in equity or by statute
or otherwise shall be cumulative and concurrent and shall be in addition to
every other right, power or remedy provided for in this Pledge Agreement or now
or hereafter existing at law or in equity or by statute or otherwise, and the
exercise or beginning of the exercise by Pledgee of any one or more of such
rights, power or remedies shall not preclude the simultaneous or later exercise
by Pledgee of any or all such other rights, powers or remedies.  No failure or
delay on the part of Pledgee to exercise any such right, power or remedy and no
notice or demand which may be given to or made upon




                                      91
<PAGE>   97
Pledgor by Pledgee with respect to any such remedies shall operate as a waiver
thereof, or limit or impair Pledgee's right to take any action or to exercise
any power or remedy hereunder, without notice or demand, or prejudice its
rights as against Pledgor in any respect.

         (b)     Except to the extent required under the Credit Agreement or
any other Loan Paper, Pledgor hereby waives diligence, presentment, demand,
protest and notice of any kind whatsoever in respect of the Notes as well as
any requirement that the Pledgee or any holder of any of the Notes exhausts any
right or remedy or takes any action in connection with the Notes or the Loan
Papers before exercising any right or remedy under this Pledge Agreement.  The
obligations of Pledgor hereunder shall not be affected or impaired by reason of
the happening from time to time of any of the following, although without
notice to or the consent of Pledgor:

              (i)         the waiver by Pledgee or any of the holders of the
                          Notes of the performance or observance by Pledgor,
                          Borrower, Borrower of any of its agreements,
                          covenants, terms or conditions contained in the Loan
                          Papers or in any Note or Guarantee;

             (ii)         the voluntary or involuntary liquidation,
                          dissolution, sale of all or substantially all of the
                          assets, marshaling of assets and liabilities,
                          receivership, conservatorship, insolvency,
                          bankruptcy, assignment for the benefit of creditors,
                          reorganization, arrangement, winding up, or other
                          similar proceedings affecting Pledgor, Borrower,
                          Borrower;

            (iii)         the release by operation of law of Pledgor, Borrower,
                          Borrower from the performance or observance of any of
                          the agreements, covenants, terms or conditions
                          contained in any of the Loan Papers; or

             (iv)         the release of any security for the Notes, whether
                          under this Pledge Agreement or any of the Loan
                          Papers.

         11.     Amendments.  This Pledge Agreement may be amended only by an
instrument in writing executed jointly by Pledgor and Pledgee (subject to the
approval of the requisite Banks as provided in the Credit Agreement) and
supplemented only by documents delivered or to be delivered in accordance with
the express terms hereof.

         12.     Multiple Counterparts.  This Pledge Agreement may be executed
in a number of identical counterparts, each of which shall be deemed an
original for all purposes and all of which shall constitute, collectively, one
agreement; but, in making proof of this Pledge Agreement, it shall not be
necessary to produce or account for more than one such counterpart.

         13.     Parties Bound; Assignment.  This Pledge Agreement shall be
binding on Pledgor and Pledgor's successors and assigns and shall inure to the
benefit of Pledgee and Pledgee's successor and assigns.




                                      92
<PAGE>   98
         14.     Invalid Provisions.  If any provision of this Pledge Agreement
is held to be illegal, invalid, or unenforceable under present or future laws
effective during the term hereof, such provision shall be fully severable, this
Pledge Agreement shall be construed and enforced as if such illegal, invalid,
or unenforceable provision had never comprised a part hereof, and the remaining
provisions hereof shall remain in full force and effect and shall not be
affected by the illegal, invalid, or unenforceable provision or by its
severance herefrom.  Furthermore, in lieu of such illegal, invalid, or
unenforceable provision there shall be added automatically as a part of this
Pledge Agreement a provision as similar in terms to such illegal, invalid, or
unenforceable provision as may be possible and be legal, valid and enforceable.

         15.     Bankruptcy of Borrower.  Pledgor absolutely and
unconditionally covenants and agrees that, in the event that Borrower does not
pay or perform or is unable to pay or perform all or any portion of the
Obligations for any reason, including, without limitation, liquidation,
dissolution, receivership, insolvency, bankruptcy, assignment for the benefit
of creditors, reorganization, arrangement, composition, or readjustment of, or
other similar proceedings affecting the status, composition, identity,
existence, assets or obligation of Borrower, or the disaffirmance or
termination of all or any part of the Secured Obligations in or as a result of
any such proceeding, no such occurrence shall in any way affect or impair
Pledgor's obligations hereunder or the Security Interest under this Pledge
Agreement.

         16.     COMPLETE AGREEMENT.  THIS PLEDGE AGREEMENT AND THE OTHER LOAN
PAPERS COLLECTIVELY REPRESENT THE FINAL AGREEMENT BY AND AMONG PLEDGEE AND
PLEDGOR AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR
SUBSEQUENT ORAL AGREEMENTS OF PLEDGOR AND PLEDGEE.  THERE ARE NO UNWRITTEN ORAL
AGREEMENTS BETWEEN PLEDGOR AND PLEDGEE.

         17.     WAIVER OF JURY TRIAL.  PLEDGOR, FOR ITSELF, ITS SUCCESSORS AND
ASSIGNS,  AND THE PLEDGEE HEREBY IRREVOCABLY WAIVE, TO THE FULLEST EXTENT
PERMITTED BY LAW, THEIR RIGHT TO A JURY TRIAL IN ANY LITIGATION ARISING OUT OF
OR IN CONNECTION WITH THIS PLEDGE AGREEMENT OR ANY OF THE OTHER LOAN PAPERS AND
FOR ANY COUNTERCLAIM THEREIN.

         18.     TEXAS LAW.  THIS PLEDGE AGREEMENT AND THE OTHER LOAN PAPERS
HAVE BEEN EXECUTED AND DELIVERED IN THE STATE OF TEXAS AND SHALL BE CONSTRUED
IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF TEXAS AND THE LAWS
OF THE UNITED STATES OF AMERICA, EXCEPT TO THE EXTENT THAT THE LAWS OF ANY
STATE IN WHICH ANY PROPERTY INTENDED AS SECURITY FOR THE OBLIGATIONS IS LOCATED
NECESSARILY GOVERN (A) THE PERFECTION AND PRIORITY OF THE LIENS IN FAVOR OF
PLEDGEE WITH RESPECT TO SUCH PROPERTY, AND (B) THE EXERCISE OF ANY REMEDIES
(INCLUDING FORECLOSURE) WITH RESPECT TO SUCH PROPERTY.




                                      93
<PAGE>   99
         EXECUTED effective as of December __, 1997.

                                  PLEDGOR:
                                  
                                     DENBURY RESOURCES, INC.
                                     
                                     
                                     
                                     By:                                       
                                        ---------------------------------------
                                     Name: Gareth Roberts                      
                                     Its: Chief Executive Officer and President
                                                                               
                                                                               
                                     By:                                       
                                        ---------------------------------------
                                     Name: Phil Ryhkoek                        
                                     Its: Chief Financial Officer and Secretary


ACCEPTED AND AGREED as of the
____ day of December, 1997,

NATIONSBANK OF TEXAS, N.A.,
as Administrative Agent for the Banks


By:_____________________________
Name: J. Scott Fowler
Title: Vice President





Signature Page
                                       94
<PAGE>   100
                                   EXHIBIT E

                             REQUEST FOR BORROWING


         Reference is made to that certain First Restated Credit Agreement
dated as of December 29, 1997, (as from time to time amended, the "Agreement")
by and among Denbury Management, Inc. ("Borrower"), Denbury Resources, Inc., as
Guarantor, NationsBank of Texas, N.A., as Administrative Agent, and certain
Banks as named and defined therein.  Terms which are defined in the Agreement
and which are used but not defined herein are used herein with the meanings
given them in the Agreement.  Pursuant to the terms of the Agreement, Borrower
hereby requests a Borrowing in the amount of $_____________ to be advanced on
________________________, _______.

         Borrower requests that the Borrowing to be made hereunder shall be [A
BASE RATE BORROWING] [A EURODOLLAR BORROWING] and shall have the Interest
Periods all as set forth below:

<TABLE>
<CAPTION>
Type of Borrowing          Aggregate Amount            Interest Period
- -----------------          ----------------            ---------------
<S>                        <C>                         <C>
                                                       
                                                                                 
- ------------------------   -------------------------   --------------------------
                                                       
                                                                                 
- ------------------------   -------------------------   --------------------------
                                                       
                                                                                 
- ------------------------   -------------------------   --------------------------
</TABLE>


         Borrower and the Authorized Officer of Borrower signing this
instrument hereby certify that:

                 (a)      Such officer is the duly elected, qualified and
         acting officer of Borrower as indicated below such officers signature
         hereto.

                 (b)      The representations and warranties of Borrower set
         forth in the Agreement and the Loan Papers delivered to Administrative
         Agent and Banks are true and correct on and as of the date hereof,
         with the same effect as though such representations and warranties had
         been made on and as of the date hereof or, if such representations and
         warranties are expressly limited to particular dates, as of such
         particular dates.  No material adverse change in the business,
         financial condition,





Signature Page
<PAGE>   101
         operations or prospects of any Credit Party has occurred since the
         date of the last financial reports of Parent delivered to Banks
         pursuant to Section 8.1 of the Agreement.

                 (c)      There does not exist on the date hereof, any
         condition or event which constitutes a Default or Event of Default,
         nor will any such Default or Event of Default exist upon Borrower's
         receipt and application of the proceeds requested hereby.  Borrower
         will use the proceeds hereby requested in compliance with the
         applicable provisions of the Agreement.

                 (d)      Borrower has performed and complied with all
         agreements and conditions in the Agreement and the other Loan Papers
         required to be performed or complied with by Borrower on or prior to
         the date hereof, and each of the conditions precedent to the Borrowing
         contained in the Agreement remain satisfied in all material respects.

                 (e)      After giving effect to the Borrowing requested
         hereby, the Outstanding Credit will not be in excess of the Borrowing
         Base on the date requested for the making of such Borrowing.

 IN WITNESS WHEREOF, this instrument is executed as of ______________________,
                                    19___.


                                  DENBURY MANAGEMENT, INC.,
                                  a Texas corporation
                                  
                                  
                                  By:                                         
                                     -----------------------------------------
                                  Its:                                        
                                      ----------------------------------------





Signature Page
<PAGE>   102
                                   EXHIBIT F

                          REQUEST FOR LETTER OF CREDIT

         Reference is made to that certain First Restated Credit Agreement
dated as of December 29, 1997 (as from time to time amended, the "Agreement"),
by and among Denbury Management, Inc. ("Borrower"), Denbury Resources, Inc., as
Guarantor, NationsBank of Texas, N.A., as Administrative Agent, and certain
Banks as named and defined therein.  Terms which are defined in the Agreement
and which are used but not defined herein are used herein with the meanings
given them in the Agreement.

         Pursuant to the terms of the Agreement, Borrower hereby requests
________________ ("Issuer") to issue a Letter of Credit for the account of
Borrower or _______________________, a Subsidiary of Borrower, as follows:

<TABLE>
<CAPTION>
Type of Commitment:
- ------------------ 
<S>                                        <C>
Requested Amount                           $                                 
                                            ---------------------------------
Requested Date of Issuance                                                   
                                           ----------------------------------
Requested Expiration Date                                                    
                                           ----------------------------------
Summary of Terms                                                             
                                           ----------------------------------
(provide a brief description
of the purpose of such Letter
of Credit and the conditions
under which the drafts under
such Letter of Credit are
to be available)                                                             
                                           ----------------------------------
Beneficiary (Name/Address)                                                   
                                           ----------------------------------
                                                                             
                                           ----------------------------------
                                                                             
                                           ----------------------------------
                                                                             
                                           ----------------------------------
</TABLE>

         Such Letter of Credit is more particularly described in the Letter of
Credit Application and Agreement of Issuer which is attached hereto.

         Borrower and the Authorized Officer of Borrower signing this
instrument hereby certify that:

                 (a)      Such officer is the duly elected, qualified and
         acting officer of Borrower as indicated below such officer's signature
         hereto.

                 (b)      The representations and warranties of Borrower set
         forth in the Agreement and the other Loan Papers delivered to
         Administrative Agent and Banks are true and correct on and as of the
         date hereof, with the same effect as though such representations and
         warranties had been made on and as of the date hereof, or if such





Signature Page
<PAGE>   103
         representations and warranties are expressly limited to particular
         dates, as of such particular dates.  No material adverse change in the
         business, financial condition, operations or prospects of any Credit
         Party has occurred since the date of the last financial reports of
         Parent delivered to Banks pursuant to Section 8.1 of the Agreement.

                 (c)      There does not exist on the date hereof any condition
         or event which constitutes a Default or Event of Default, nor will any
         such Default or Event of Default exist upon the issuance of the Letter
         of Credit requested hereby.  Borrower will use the Letter of Credit
         solely for purposes permitted by the Agreement.

                 (d)      Borrower has performed and complied with all
         agreements and conditions in the Agreement and the other Loan Papers
         required to be performed or complied with by Borrower on or prior to
         the date hereof, and each of the conditions precedent to the issuance
         of Letters of Credit contained in the Agreement remain satisfied in
         all material respects.

                 (e)      After the issuance of the Letter of Credit requested
         hereby, the sum of (A) the outstanding principal balance of the Loan,
         plus (B) Letter of Credit Exposure, will not be in excess of the
         Borrowing Base in effect on the date requested for the issuance of
         such Letter of Credit.

         IN WITNESS WHEREOF, this instrument is executed as of
________________, 19__.

                                  DENBURY MANAGEMENT, INC.,
                                  a Texas corporation
                                  
                                  
                                  By:                                          
                                     ------------------------------------------
                                  Its:                                         
                                      -----------------------------------------





Signature Page
<PAGE>   104
                                   EXHIBIT G

                 NOTICE OF CONTINUATION AND CONVERSTION NOTICE


         Reference is made to that certain First Restated Credit Agreement
dated as of December 29, 1997 (as from time to time amended, the "Agreement"),
by and among Denbury Management, Inc. ("Borrower"), Denbury Resources, Inc., as
Guarantor, NationsBank of Texas, N.A., as Administrative Agent and certain
Banks as named and defined therein.  Terms which are defined in the Agreement
and which are used but not defined herein are used herein with the meanings
given them in the Agreement.

         [ ]     Reference is hereby made to the existing Eurodollar Loan
                 outstanding under the Agreement in the amount of $________
                 which is subject to an Interest Period expiring on
                 _________________, 199__.  Borrower hereby requests that on
                 the expiration of such Interest Period the portion of the
                 principal of such Eurodollar Loan which is subject to such
                 Interest Period be made the subject of [ ] a Base Rate Loan or
                 [ ] a Eurodollar Loan having an Interest Period of ____
                 months.

         [ ]     Borrower hereby requests that on ____________, 199__, a
                 portion of the principal of the Base Rate Loan in the amount
                 of $__________ be made the subject of a Eurodollar Loan having
                 an Interest Period of ______ (__) months.

         Borrower and the Authorized Officer of Borrower signing this
instrument hereby certify that:

                 (a)      Such officer is the duly elected, qualified and
         acting officer of Borrower as indicated below such officer's signature
         hereto;

                 (b)      There does not exist on the date hereof any condition
         or event which constitutes a Default or Event of Default; and

                 (c)      The representations and warranties of Borrower set
         forth in the Agreement and the Loan Papers delivered to Administrative
         Agent and Banks are true and correct on and as of the date hereof,
         with the same effect as though such representations and warranties had
         been made on and as of the date hereof or, if such representations and
         warranties are expressly limited to particular dates, as of such
         particular dates.

         IN WITNESS WHEREOF, this instrument is executed as of _____________,
199__.

                                  DENBURY MANAGEMENT, INC.,
                                  a Texas corporation
                                  
                                  
                                  By:                                         
                                     -----------------------------------------
                                  Its: Chief Financial Officer





Signature Page
<PAGE>   105
                                   EXHIBIT H

                       CERTIFICATE OF OWNERSHIP INTERESTS

         This Certificate of Ownership Interests (this "Certificate") is
executed and delivered pursuant to that certain First Restated Credit Agreement
dated December 29, 1997 (as amended from time to time, the "Agreement"), by and
among Denbury Management, Inc. ("Borrower"), Denbury Resources, Inc., as
Guarantor, NationsBank of Texas, N.A., as Administrative Agent and certain
Banks as named and defined therein.  Unless otherwise defined herein, all
capitalized terms shall have the meanings given such terms in the Agreement.

         Borrower hereby represents and warrants to each Bank that (a) after
giving effect to the Chevron Acquisition, Borrower will hold good and
defensible title, subject only to Permitted Encumbrances and Immaterial Title
Deficiencies, to the Mineral Interests described in the Initial Reserve Report
and in the Chevron Reserve Report, (b) with the exception of Immaterial Title
Deficiencies, Borrower's share of (i) the costs for each of the Mineral
Interests described in the Initial Reserve Report and the Chevron Reserve
Report is not greater than the decimal fraction set forth in the Initial
Reserve Report and the Chevron Reserve Report, before and after payout, as the
case may be, and described therein by the respective designations "working
interests," "WI," "gross working interest," "GWI," or similar terms (except in
such cases where there is a corresponding increase in the net revenue
interest), and (ii) production from, allocated to, or attributed to each of
such Mineral Interests is not less than the decimal fraction set forth in the
Initial Reserve Report and Chevron Reserve Report, before and after payout, as
the case may be, and described therein by the designations net revenue
interest, NRI, or similar terms, and (c) except in the case of wells which, in
the aggregate, represent less than five percent (5%) of the production from the
Mineral Interests described in the Initial Reserve Report and Chevron Reserve
Report, each well drilled in respect of each of the Mineral Interests described
in the Initial Reserve Report and Chevron Reserve Report (A) is capable of, and
is presently, producing hydrocarbons in commercially profitable quantities, and
after giving effect to the Chevron Acquisition, Borrower will receive payments
for its share of production, with no funds in respect of any thereof being
presently held in suspense, other than any such funds being held in suspense
pending delivery of appropriate division orders, and (B) has been drilled,
bottomed, completed and operated in compliance with all applicable Laws and no
such well which is currently producing hydrocarbons is subject to any penalty
in production by reason of such well having produced in excess of its allowable
production.

         Borrower acknowledges and agrees that each Bank is relying on this
Certificate and the representations and warranties herein contained in
advancing funds under the Agreement  and but for Borrower's execution and
delivery of this Certificate, Banks would not advance funds under the
Agreement.





Signature Page
<PAGE>   106
         Executed the _____ day of December, 1997.

                                  DENBURY MANAGEMENT, INC.,
                                  a Texas corporation
                                  
                                  
                                  By:                                          
                                     ------------------------------------------
                                  Name:   Phil Rykhoek
                                  Title:  Chief Financial Officer and Secretary





Signature Page
<PAGE>   107
                                   EXHIBIT I

                            DENBURY RESOURCES, INC.

                        FINANCIAL OFFICER'S CERTIFICATE

         The undersigned, the Chief Financial Officer of Denbury Resources,
Inc., a corporation incorporated under the Canadian Business Corporations Act
("Parent"), which is the owner and holder of one hundred percent (100%) of the
issued and outstanding capital stock of Denbury Management, Inc., a Texas
corporation ("Borrower"), hereby (a) delivers this Certificate pursuant to
Section 8.1(c) of that certain First Restated Credit Agreement ("Credit
Agreement") dated as of December 29, 1997, by and among Borrower, Parent,
NationsBank of Texas, N.A., as Administrative Agent ("Administrative Agent"),
and the financial institutions listed on Schedule I thereto, as Banks
("Banks"), and (b) certifies to Banks, with the knowledge and intent that Banks
may, without any independent investigation, rely fully on the matters herein in
connection with the Credit Agreement, as follows:

         1.      Attached hereto as Schedule I are the financial statements of
Parent as of and for the Fiscal [ ]Year [ ]Quarter (check one) ended
____________, 19__.

         2.      Such financial statements are true and correct in all
materials respects, have been prepared on a consistent basis in accordance with
GAAP (except as otherwise noted therein) and fairly present the financial
condition of Parent as of the date indicated therein and the results of
operations for the respective periods indicated therein.

         3.      Attached hereto as Schedule II are detailed calculations used
by Parent to establish that Parent was in compliance with the requirements of
Article X of the Credit Agreement on the date of the financial statements
attached as Schedule 1 hereto.

         4.      Unless otherwise disclosed on Schedule III attached hereto and
incorporated herein by reference for all purposes, neither a Default nor an
Event of Default has occurred which is in existence on the date hereof;
provided, that for any Default or Event of Default disclosed on Schedule III
attached hereto, Parent is taking or proposes to take the action to cure such
Default or Event of Default set forth on Schedule III.

         5.      On the date of the financial statements attached hereto as
Schedule I (a) (check one) [ ] there is no Material Gas Imbalance or [ ] the
amount of the net gas imbalances under Gas Balancing Agreements to which
Borrower is a party or by which any Mineral Interests owned by Borrower is
bound is ____________, and (b) the aggregate amount of all Advance Payments
received under Advance Payment Contracts to which Borrower is a party or by
which any Mineral Interests owned by Borrower is bound which have not been
satisfied by delivery of production, if any, is ______________.





Signature Page
<PAGE>   108
         6.      Attached hereto as Schedule IV is a summary of the Hedge
Transactions to which each Credit Party is a party on the date of the financial
statements attached hereto as Schedule 1.

         7.      Except as described on Schedule V hereto, the representations
and warranties of Borrower set forth in the Agreement and the Loan Papers,
delivered to Administrative Agent and Banks are true and correct on and as of
the date hereof, with the same effect as though such representations and
warranties had been made on and as of the date hereof or, if such
representations and warranties are expressly limited to particular dates, as of
such particular dates.

         Unless otherwise defined herein, all capitalized terms used herein
shall have the meaning given such terms in the Credit Agreement.

         IN WITNESS WHEREOF, the undersigned has duly executed this Financial
Officer's Certificate as of ___________, 19___.


                                  DENBURY RESOURCES, INC.
                                  
                                  
                                  By:                                          
                                     ------------------------------------------
                                  Its:                                         
                                      -----------------------------------------
                                  
                                  
                                  
                                  
                                  By:                                          
                                     ------------------------------------------
                                  Its:                                         
                                      -----------------------------------------





Signature Page
<PAGE>   109
                                   Schedule I

                              Financial Statements
                                (to be attached)





Signature Page
<PAGE>   110
                                  Schedule II

                            Compliance Calculations
                                (to be attached)





Signature Page
<PAGE>   111
                                  Schedule III

                            Defaults/Remedial Action
                                (to be attached)





Signature Page
<PAGE>   112
                                  Schedule IV

                         Summary of Hedge Transactions
                                (to be attached)





Signature Page
<PAGE>   113
                                   Schedule V

                Qualifications to Representations and Warranties





Signature Page
<PAGE>   114
                                   EXHIBIT J
                           ASSIGNMENT AND ACCEPTANCE



Reference is made to the First Restated Credit Agreement dated as of December
29, 1997 (the "Credit Agreement") among Denbury Management, Inc., (the
"Borrower"), Denbury Resources, Inc., as Guarantor, the Banks (as defined in
the Credit Agreement) and NationsBank of Texas, N.A., as Administrative Agent
for the Banks (the "Administrative Agent"). Terms defined in the Credit
Agreement are used herein with the same meaning.

The "Assignor" and the "Assignee" referred to on Schedule 1 agree as follows:

1.       The Assignor hereby sells and assigns to the Assignee, without
recourse and without representation or warranty except as expressly set forth
herein, and the Assignee hereby purchases and assumes from the Assignor, an
interest in and to the Assignor's rights and obligations under the Credit
Agreement and the other Loan Papers as of the date hereof equal to the
percentage interest specified on Schedule 1 of all outstanding rights and
obligations under the Credit Agreement and the other Loan Papers.  After giving
effect to such sale and assignment, the Assignee's Commitment, Assignee's
Commitment Percentage and the principal amount of the Revolving Loan owing to
the Assignee will be as set forth on Schedule 1.

2.       The Assignor (i) represents and warrants that it 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; (ii) makes no representation
or warranty and assumes no responsibility with respect to any statements,
warranties or representations made in or in connection with the Loan Papers or
the execution, legality, validity, enforceability, genuineness, sufficiency or
value of the Loan Papers or any other instrument or document furnished pursuant
thereto; (iii) makes no representation or warranty and assumes no
responsibility with respect to the financial condition of any Credit Party or
the performance or observance by any Credit Party of any of its obligations
under the Loan Papers or any other instrument or document furnished pursuant
thereto; and (iv) attaches the Note held by the Assignor and requests that the
Agent exchange such Note for new Notes payable to the order of the Assignee in
an amount equal to the Commitment assumed by the Assignee pursuant hereto and
to the Assignor in an amount equal to the Commitment retained by the Assignor,
if any, as specified on Schedule 1

3.       The Assignee (i) confirms that it has received a copy of the Credit
Agreement, together with copies of the financial statements referred to in
Section 8.1 thereof and such other documents and information as it has deemed
appropriate to make its own credit analysis and decision to enter into this
Assignment and Acceptance; (ii) agrees that it will, independently and without
reliance upon the Agent, the Assignor or any other Bank and based on such
documents and information as it shall deem appropriate at the time, continue to
make its own credit decisions in taking or not taking action under the Credit
Agreement; (iii) confirms that it is an Eligible Assignee; (iv) appoints and
authorizes the Agent to take such action as agent on its behalf and to exercise
such powers and discretion under the Credit Agreement as are





Signature Page
                                      109
<PAGE>   115
delegated to the Agent by the terms thereof, together with such powers and
discretion as are reasonably incidental thereto; (v) agrees that it will
perform in accordance with their terms all of the obligations that by the terms
of the Credit Agreement are required to be performed by it as a Bank; and (vi)
attaches any U.S. Internal Revenue Service or other forms required under
Section 13.6(d).

4.       Following the execution of this Assignment and Acceptance, it will be
delivered to the Agent for acceptance and recording by the Agent.  The
effective date for this Assignment and Acceptance (the "Effective Date") shall
be the date of acceptance hereof by the Agent, unless otherwise specified on
Schedule 1.

5.       Upon such acceptance and recording by the Agent, as of the Effective
Date, (i) the Assignee shall be a party to the Credit Agreement and, to the
extent provided in this Assignment and Acceptance, have the rights and
obligations of a Bank thereunder and (ii) the Assignor shall, to the extent
provided in this Assignment and Acceptance, relinquish its rights and be
released from its obligations under the Credit Agreement.

6.       Upon such acceptance and recording by the Agent, from and after the
Effective Date, the Agent shall make all payments under the Credit Agreement
and the Notes in respect of the interest assigned hereby (including, without
limitation, all payments of principal, interest and commitment fees with
respect thereto) to the Assignee.  The Assignor and Assignee shall make all
appropriate adjustments in payments under the Credit Agreement and the Notes
for periods prior to the Effective Date directly between themselves.

7.       This Assignment and Acceptance shall be governed by, and construed in
accordance with, the laws of the State of Texas.

8.       This Assignment and Acceptance may be executed in any number of
counterparts and by different parties hereto in separate counterparts, each of
which when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement. Delivery of an executed
counterpart of Schedule 1 to this Assignment and Acceptance by telecopier shall
be effective as delivery of a manually executed counterpart of this Assignment
and Acceptance.

IN WITNESS WHEREOF, the Assignor and the Assignee have caused Schedule 1 to
this Assignment and Acceptance to be executed by their officers thereunto duly
authorized as of the date specified thereon.





Signature Page
                                      110
<PAGE>   116
                                   SCHEDULE 1
                                       to
                           ASSIGNMENT AND ACCEPTANCE

<TABLE>
<S>                                                         <C>
Percentage interest assigned:                               ________%

Assignee's Commitment:                                      $_______

Assignee's Commitment Percentage:                           _______%

Aggregate outstanding principal amount
  of Revolving Loans assigned:                              $_______

Principal amount of Note payable to Assignee:               $_______

Principal amount of Note payable to Assignor:               $_______
</TABLE>

Effective Date (if other than date
          of acceptance by Agent):                                *_______, 19__



                                  [NAME OF ASSIGNOR], as Assignor
                                                                 
                                                                 
                                  By:________________________    
                                       Title:____________________
                                                                 
                                  Dated: ______________, 19__    
                                                                 
                                                                 
                                                                 
                                  [NAME OF ASSIGNEE], as Assignee
                                                                 
                                                                 
                                  By:_______________________     
                                       Title:___________________ 
                                                                 
                                  Domestic Lending Office:       
                                                                 
                                  Eurodollar Lending Office:     





Signature Page
                                      111
<PAGE>   117
*        This date should be no earlier than five Business Days after the
delivery of this Assignment and Acceptance to the Agent.


Accepted and Approved
this ___ day of ___________, 19 _

NATIONSBANK OF TEXAS, N.A.


By:_________________________
Title:________________________


Approved this ____ day
of ____________, 19__

DENBURY MANAGEMENT, INC.


By:_______________________
Title:______________________





Signature Page
                                      112
<PAGE>   118
                                  SCHEDULE 1.1

                             Financial Institutions

<TABLE>
<CAPTION>
                Bank                         Commitment Amount                Commitment Percentage
                ----                         -----------------                ---------------------
 <S>                                           <C>                                    <C>
 NationsBank of Texas, N.A.                    $300,000,000                           100%
</TABLE>


<TABLE>
<CAPTION>
      Domestic Lending         Eurodollar Lending
           Office                    Office               Address for Notice          Agent-Address
           ------                    ------               ------------------          -------------
 <S>                        <C>                       <C>                        <C>
 901 Main St., 64th Floor   901 Main St., 64th Floor  901 Main St., 64th Floor   901 Main St., 64th Floor
 Dallas, Texas 75202        Dallas, Texas 75202       Dallas, Texas 75202        Dallas, Texas 75202
 Fax No. (214) 508-1285     Fax No. (214) 508-1285    Fax No. (214) 508-1285     Fax No. (214) 508-1285
</TABLE>





Signature Page
                                      113
<PAGE>   119
                                  SCHEDULE 1.2

                               EXISTING MORTGAGES


<TABLE>
<CAPTION>
 TYPE OF DOCUMENT                                      JURISDICTION                                    BOOK/VOLUME/NO.
                                                                                                       DATE
 <S>                                                  <C>                                     <C>
 Deed of Trust, Mortgage, Assignment, Security         Cameron Parish, LA                         File No. 240755, Conv. Book 815,
 Agreement and Financing Statement                                                                  Mtg. Book 209, filed 5/12/95
                                                                                                      AS ASSIGNED AND AMENDED:
                                                                                                  File No. 245936, Conv. Book 836,
                                                                                                    Mtg. Book 218, filed 6/11/96
                                                      
 Deed of Trust, Mortgage, Assignment, Security        Concordia Parish, LA                    COB 347,Folio 595; MOB270, Folio436;
 Agreement and Financing Statement                                                                 Doc. No. 208248, filed 5/12/95
                                                                                                      AS ASSIGNED AND AMENDED:
                                                                                                  File No. 212988, MOB Book 280,
                                                                                                      Folio 147, filed 6/10/96
 Deed of Trust, Mortgage, Assignment, Security        Lafourche Parish, LA                           Conv. Book 1242, Folio 612
 Agreement and Financing Statement                                                                    Mtg. Book 691, Folio 648
                                                                                                  Entry No. 781497, filed 5/12/95
                                                                                                      AS ASSIGNED AND AMENDED:
                                                                                                    Conv. Book 1277, Folio 736,
                                                                                                     Misc. Book 77, Folio 861,
                                                                                                    Entry 799606, filed 7/1/96
</TABLE>





Signature Page
                                      114
<PAGE>   120
<TABLE>
<CAPTION>
 TYPE OF DOCUMENT                                      JURISDICTION                                    BOOK/VOLUME/NO.
                                                                                                       DATE
 <S>                                                   <C>                                         <C>
 Deed of Trust, Mortgage, Assignment, Security         Terrebonne Parish, LA                           Mtg. Book 1016, COB 1461,
 Agreement and Financing Statement                                                                  Entry No. 955603, filed 5/16/95
                                                                                                        AS ASSIGNED AND AMENDED:
                                                                                                   Mtg. Book 1061, Entry No. 977283,
                                                                                                             filed 6/10/96
                                                                                                   Mtg. Book 1061, Entry No. 977426,
                                                                                                             filed 6/12/96
                                                       
 Deed of Trust, Mortgage, Assignment, Security           Clarke County, MS                                 Book 184, Page 318
 Agreement and Financing Statement                                                                       Deed of Trust Records
                                                                                                             filed 5/12/95
                                                                                                        AS ASSIGNED AND AMENDED:
                                                                                                      Book DT193, Pages 523-542,
                                                                                                             filed 6/10/96
 Deed of Trust, Mortgage, Assignment, Security           Jasper County, MS                                 Book 92, Page 175,
 Agreement and Financing Statement                                                                       Deed of Trust Records
                                                                                                             filed 5/12/95
                                                       
 Deed of Trust, Mortgage, Assignment, Security            Jones County, MS                                Book 1044, Page 538
 Agreement and Financing Statement                         (2nd District)                                Deed of Trust Records
                                                                                                             filed 5/12/95
                                                       
 Deed of Trust, Mortgage, Assignment, Security           Rankin County, MS                                Book 1043, Page 498
 Agreement and Financing Statement                                                                           filed 5/22/95
                                                                                                        AS ASSIGNED AND AMENDED:
                                                                                                         Book 1125, Page 662,
                                                                                                             filed 6/11/96
</TABLE>





Signature Page
                                      115
<PAGE>   121
<TABLE>
<CAPTION>
 TYPE OF DOCUMENT                                      JURISDICTION                                    BOOK/VOLUME/NO.
                                                                                                       DATE
 <S>                                                     <C>                                               <C>
 Deed of Trust, Mortgage, Assignment, Security           Smith County, MS                                 Book 404, Page 556
 Agreement and Financing Statement                                                                      Deed of Trust Records
                                                                                                            filed 5/12/95
                                                                                                       AS ASSIGNED AND AMENDED:
                                                                                                       Book 415, Pages 166-184,
                                                                                                            filed 6/12/96
                                                       
 Deed of Trust, Mortgage, Assignment, Security         Walthall County, MS                                Book 231, Page 568
 Agreement and Financing Statement                                                                          filed 5/12/95
                                                                                                       AS ASSIGNED AND AMENDED:
                                                                                                        Book 239, Pages 14-32,
                                                                                                            filed 6/10/96
 Deed of Trust, Mortgage, Assignment, Security           Wayne County, MS                                 Book 860, Page 531
 Agreement and Financing Statement                                                                      Deed of Trust Records
                                                                                                            filed 5/12/95
                                                                                                       AS ASSIGNED AND AMENDED:
                                                                                                   OT Deed Book 890, Pages 448-466,
                                                                                                            filed 6/10/96
                                                       
 Deed of Trust, Mortgage, Assignment, Security        State Mineral Board of Louisiana        Resolution No.28, datedJuly 12,1995,
 Agreement and Financing Statement                   (State Lease Nos. 1745, 1744, and         recordedin Conv. Book1472, Mtg. Book
                                                         328 Terrebonne Parish, LA)            1026, EntryNo. 960530,filed 8/10/95,
                                                                                                       Terrebonne Parish, LA
                                                                                              
 Deed of Trust, Mortgage, Assignment, Security             Bureau of Land Management -                 sent for recording 5/24/95
 Agreement and Financing Statement                   Eastern States Office (Wayne County, MS)
</TABLE>





Signature Page
                                      116
<PAGE>   122
<TABLE>
<CAPTION>
 TYPE OF DOCUMENT                                   JURISDICTION                                       BOOK/VOLUME/ NO.
                                                                                                       DATE
 <S>                                                <C>                                          <C>
 Mortgage, Assignment, Security Agreement,          Terrebonne Parish, LA                             Mtg. Book 1038, COB 1486
 Fixture Filing and Financing Statement                                                           Entry No. 966504, filed 11/22/95
                                                                                                      AS ASSIGNED AND AMENDED:
                                                                                                 Mtg. Book 1061, Entry No. 977283,
                                                                                                           filed 6/10/96
                                                                                                 Mtg. Book 1061, Entry No. 977426,
                                                                                                           filed 6/12/96
                                                    
 Mortgage, Assignment, Security Agreement,           Ascension Parish, LA                         File No. 361787, Conv. Book 549,
 Fixture Filing and Financing Statement                                                            Mtg. Book 643, filed 11/27/95
                                                                                                      AS ASSIGNED AND AMENDED:
                                                                                                  File No. 372807, MOB Book 667,
                                                                                                           filed 6/12/96
</TABLE>





Signature Page
                                      117
<PAGE>   123
<TABLE>
<CAPTION>
 TYPE OF DOCUMENT                                           JURISDICTION                    BOOK/VOLUME/NO.
                                                                                            DATE
 <S>                                                        <C>                              <C>
 Mortgage, Deed of Trust, Security Agreement, Financing          Acadia Parish, LA            File No. 625353, Mtg. Book 520,
 Statement and Assignment of Production                                                           Folio 442, filed 7/15/96
                                                                                            
 Mortgage, Deed of Trust, Security Agreement, Financing        Avoyelles Parish, LA           File No. 96-6252, Mtg. Book 424,
 Statement and Assignment of Production                                                                filed 7/15/96
 Mortgage, Deed of Trust, Security Agreement, Financing         Cameron Parish, LA            File No. 246389, Mtg. Book 219,
 Statement and Assignment of Production                                                                filed 7/12/96
                                                                                            
 Mortgage, Deed of Trust, Security Agreement, Financing          Desoto Parish, LA                    File No. 551694,
 Statement and Assignment of Production                                                                filed 7/11/96
                                                                                            
 Mortgage, Deed of Trust, Security Agreement, Financing          Iberia Parish, LA           File No. 96-6664, Mtg. Book A682,
 Statement and Assignment of Production                                                                filed 7/12/96
                                                                                            
 Mortgage, Deed of Trust, Security Agreement, Financing         Jackson Parish, LA            File No. 318867, Mtg. Book 170,
 Statement and Assignment of Production                                                           Folio 694, filed 7/15/96
 Mortgage, Deed of Trust, Security Agreement, Financing     Jefferson Davis Parish, LA        File No. 535475, Mtg. Book 378,
 Statement and Assignment of Production                                                           Folio 403, filed 7/16/96
                                                                                            
 Mortgage, Deed of Trust, Security Agreement, Financing        Lafourche Parish, LA           File No. 800203, Mtg. Book 719,
 Statement and Assignment of Production                                                           Folio 211, filed 7/12/96
</TABLE>





Signature Page
                                      118
<PAGE>   124
<TABLE>
<CAPTION>
 TYPE OF DOCUMENT                                           JURISDICTION              BOOK/VOLUME/NO.
                                                                                      DATE
 <S>                                                        <C>                       <C>
 Mortgage, Deed of Trust, Security Agreement, Financing     Point Coupee Parish, LA   File MB245, No. 70, Mtg. Book 415,
 Statement and Assignment of Production                                                    Folio 132, filed 7/12/96
                                                                                      
 Mortgage, Deed of Trust, Security Agreement, Financing       Rapides Parish, LA      File No. 1028847, Mtg. Book 1416,
 Statement and Assignment of Production                                                    Folio 519, filed 7/12/96
 Mortgage, Deed of Trust, Security Agreement, Financing      Red River Parish, LA      File No. 186,073; Mtg. Book 142,
 Statement and Assignment of Production                                                    Folio 149, filed 7/11/96
                                                                                      
 Mortgage, Deed of Trust, Security Agreement, Financing       Richland Parish, LA      File No. 296206, Mtg. Book 306,
 Statement and Assignment of Production                                                         filed 7/12/96
                                                                                      
 Mortgage, Deed of Trust, Security Agreement, Financing     St. Charles Parish, LA     File No. 203836, Mtg. Book 614,
 Statement and Assignment of Production                                                    Folio 372, filed 7/12/96
                                                                                      
 Mortgage, Deed of Trust, Security Agreement, Financing      St. Martin Parish, LA     File No. 155143, Mtg. Book 730,
 Statement and Assignment of Production                                                    Folio 229, filed 7/17/96
 Mortgage, Deed of Trust, Security Agreement, Financing       St. Mary Parish, LA      File No. 218194, Mtg. Book 734,
 Statement and Assignment of Production                                                    Folio 35, filed 7/12/96
                                                                                      
 Mortgage, Deed of Trust, Security Agreement, Financing      Terrebonne Parish, LA     File No. 979550, Mtg. Book 1065,
 Statement and Assignment of Production                                                         filed 7/17/96
</TABLE>





Signature Page
                                      119
<PAGE>   125
<TABLE>
<CAPTION>
 TYPE OF DOCUMENT                                           JURISDICTION                   BOOK/VOLUME/NO.
                                                                                           DATE
 <S>                                                        <C>                              <C>
 Mortgage, Deed of Trust, Security Agreement, Financing        Vermilion Parish, LA                 File No. 9608707,
 Statement and Assignment of Production                                                               filed 7/12/96
                                                                                           
 Mortgage, Deed of Trust, Security Agreement, Financing         Webster Parish, LA           File No. 404112, Mtg. Book 426,
 Statement and Assignment of Production                                                          Folio 369, filed 7/18/96
 Mortgage, Deed of Trust, Security Agreement, Financing          Clarke County, MS              Mtg. Book DT194, Page 359,
 Statement and Assignment of Production                                                               filed 7/11/96
                                                                                           
 Mortgage, Deed of Trust, Security Agreement, Financing         Franklin County, MS          File No. 017594, Mtg. Book 202,
 Statement and Assignment of Production                                                          Page 636, filed 7/11/96
                                                                                           
 Mortgage, Deed of Trust, Security Agreement, Financing          Hinds County, MS            File No. 87931, Mtg. Book 295,
 Statement and Assignment of Production                                                          Page 686, filed 7/12/96
                                                                                           
 Mortgage, Deed of Trust, Security Agreement, Financing     Jefferson Davis County, MS       File No. 9601950, Mtg. Book 431,
 Statement and Assignment of Production                                                          Page 465, filed 7/12/96
 Mortgage, Deed of Trust, Security Agreement, Financing          Jones County, MS                Mtg. Book 436, Page 434,
 Statement and Assignment of Production                                                               filed 7/18/96
                                                                                           
 Mortgage, Deed of Trust, Security Agreement, Financing         Lowndes County, MS              Mtg. Book 1165, Page 310,
 Statement and Assignment of Production                                                               filed 7/16/96
</TABLE>





Signature Page
                                      120
<PAGE>   126
<TABLE>
<CAPTION>
 TYPE OF DOCUMENT                                           JURISDICTION                               BOOK/VOLUME/NO.
                                                                                                       DATE
 <S>                                                        <C>                                         <C>
 Mortgage, Deed of Trust, Security Agreement, Financing     Madison County, MS                          File No. 197658, Book 991,
 Statement and Assignment of Production                                                                  Page 386, filed 7/17/96
                                                            
 Mortgage, Deed of Trust, Security Agreement, Financing      Smith County, MS                            File No. 3022, Book 416,
 Statement and Assignment of Production                                                                   Page 85, filed 7/11/96
 Mortgage, Deed of Trust, Security Agreement, Financing     Walthall County, MS                          Mtg. Book 239, Page 467,
 Statement and Assignment of Production                                                                       filed 7/12/96
                                                            
 Mortgage, Deed of Trust, Security Agreement, Financing      Wayne County, MS                            Mtg. Book 892, Page 321,
 Statement and Assignment of Production                                                                       filed 7/11/96
</TABLE>





Signature Page
                                      121
<PAGE>   127
                                  SCHEDULE 7.6

                                   Litigation





Signature Page
                                      122
<PAGE>   128
                                 SCHEDULE 7.11

                            Licenses, Permits, Etc.

                                      None





Signature Page
                                      123
<PAGE>   129
                                 SCHEDULE 7.14

                              Jurisdictions, Etc.





Signature Page
                                      124
<PAGE>   130
                                 SCHEDULE 7.15

                            Environmental Disclosure





Signature Page
                                      125
<PAGE>   131
                                 SCHEDULE 8.10

                       ENVIRONMENTAL COMPLIANCE SCHEDULE

Cornerstone Environmental Resources, Inc. (CERI) conducted an environmental
review of the subject interests and prepared a report identified as
"Environmental Site Assessment, Chevron Operated Properties, East and West
Heidelberg Fields, Jasper County, Mississippi, CERI Project #97125," dated
December, 1997 (the CERI Report).   In addition, CERI reviewed and evaluated
four documents prepared by Carter & Burgess, Inc. for Chevron identified as
"Carter & Burgess, 1996, Environmental Site Assessment of Oil & Gas Properties
(1,720 Acres) Within the Waterflood Unit Covering the Eutaw West One Fault
Block Oil Pool, Heidelberg Field, Jasper County, Mississippi"; "Carter &
Burgess, 1997a, Final Report, Environmental Site Assessment of Oil & Gas
Properties (1,320 Acres) Within the Proposed East Waterflood Unit Covering the
Eutaw East One Fault Block Oil Pool, Heidelberg Field, Jasper County,
Mississippi"; "Carter & Burgess, 1997b Final Report, Environmental Site
Assessment of Oil & Gas Properties (+/- 3,755 Acres) Within the Central Region
of the Heidelberg Production Field, Heidelberg Field, Jasper County,
Mississippi"; and "Carter & Burgess, 1997c Summary of Findings - Additional
Phase II Investigation Near the John Morgan Well NO. 1 (Block 35-13) Eutaw West
One Fault Block Oil Pool Unit, Heidelberg Field, Jasper County, Mississippi"
(collectively, the C&B Reports).   The reports indicated numerous areas of
potential concern and/or areas of noncompliance with applicable environmental
laws concerning the Chevron Properties.

Denbury Management, Inc. (Denbury) plans to address the environmental concerns
as soon as possible.  Denbury agrees to provide NationsBank with a workplan
within 45 days of execution of the Credit Agreement (Closing) for its review
and approval which more particularly identifies the adverse environmental
conditions as generally described below; the work to be performed to correct,
remediate, or mitigate the environmental conditions; and,  the anticipated time
frame in which the work will occur (the Workplan).   Further, beginning 45 days
after Closing, Denbury agrees to provide quarterly reports to NationsBank as to
the status of completion of the work until such time as all the work is
completed in accordance with the commitments in this Schedule or the Workplan,
or as they may be modified as described below.  Each such report shall contain,
as an attachment, copies of all documents provided to the regulatory
authorities or other information necessary to evidence that the work is
completed.   The decision to review and/or comment on the Workplan or any
quarterly reports will be at NationsBank's sole discretion.

Denbury's preparation and presentation, and NationsBank's review and
acceptance, of  a Workplan,  shall be governed by and shall adhere to, accepted
standard oilfield practices and State and Federal Compliance Regulations
regarding NORM containment,





Signature Page
                                      126
<PAGE>   132
remediation and mitigation, and shall not impose any unnecessary, unusual or
unwarranted restrictions, limitations or requirements upon Denbury, in its
normal and appropriate operation of the Chevron Properties, within the minimum
established environmental rules and regulations.

I.       CERI Report

Denbury agrees to incorporate in the Workplan and to implement a strategy to
address the following recommendations more specifically described in the CERI
Report:

A.       Conduct a baseline water study of the drinking water zone prior to the
         commencement of water flood operations in the East Heidelberg field
         area to establish pre-waterflood fresh water conditions for use in
         future monitoring.  Regular scheduled monitoring of drinking water
         conditions should be established as part of ongoing waterflood
         operations.

B.       Conduct groundwater sampling in the West Heidelberg area from the
         drinking water source zone to determine whether that zone has been
         impacted by surface spills of benzene-containing materials.

C.       Treat areas in which vegetation has been destroyed from salt water
         spillage and re-establish vegetation due to the high erodability of
         the soils.

D.       Restore soil to its original condition around wells that have been
         recently plugged.

E.       Examine and repair salt water disposal wells that had pressure on the
         casing or temporarily abandoned wells that had "bubbles" emanating up
         through fluid in the cellar.

F.       Pump out well cellars containing oily fluid or fluid with a sheen.

G.       Properly close the open cellar overflow pit at the Carrie Husband Unit
         "B" #1 and close the unused small lined pit at the Thornton Central
         Tank Battery.

H.       Properly abandon inactive tank battery facilities and wells if they
         serve no future purpose.





Signature Page
                                      127
<PAGE>   133
I.       Investigate the former field office and yard site of the former Cotton
         Valley Air Injection Project and the White Compressor Station in the
         West Heidelberg Field area to assess the presence of hazardous
         conditions and remediate, if necessary.  Those wells and facilities
         that will not be used should be properly abandoned and the area(s)
         restored.

J.       Haul empty and unlabeled drums off-site for proper disposal.  All
         unbermed or earthen areas around these drums should be sampled to
         determine whether the drums leaked.

K.       Identify and properly label the contents of unlabeled drums that are
         not empty.

L.       Repair all berms that are damaged or worn, including the berms at W.H.
         Husband Unit and the Carraway Morrison tank battery.

M.       Plug fresh water wells if they are not to be used as monitor wells.

N.       Place netting over pits to prevent the entrance of migratory birds.

O.       File current Mississippi Oil and Gas Board Form 9As on all temporarily
         abandoned wells or plug them.
 
P.       Replace rusty tanks, including: Dantzler "B" #1 tank battery, 300
         barrel oil tank at the Helen Morrison Consolidated tank battery,
         condensate tank at the Carraway Morrison tank battery, the Carrie
         Husband Unit "C" tank battery and Margiree Jones Unit "A" #1 tank
         battery.

Q.       Install padlocks on all drain valves.

R.       Install secondary containment around load line termination points in
         the West Heidelberg Field.

S.       Install fencing around all tank battery sites.

T.       Confirm that inactive tank batteries are empty.





Signature Page
                                      128
<PAGE>   134
U.       Label all transformers to indicate that they do not contain PCBs.

V.       Dispose of used oil filters properly.

W.       Label lube oil containers at pumps.

II.      C&B Reports

Denbury agrees to incorporate in the Workplan and to implement a strategy
addressing the information and findings in the C&B Reports as generally
described in the CERI Report and to continue to take such steps as recommended
in those reports or to take such other measures as may be appropriate to
monitor groundwater and/or prevent groundwater contamination and to remove
naturally occurring radioactive materials (NORM) soil and decontaminate
equipment upon facility abandonment for NORM contamination cited in the C&B
Reports.

III.     Permit Transfer

Denbury agrees to transfer all environmental permits as required by applicable
environmental laws within 30 days of the date of Closing.

IV.      Denbury's Current Operations and Environmental Compliance Program

Even though Denbury has represented that there are no material adverse
environmental conditions associated with its current operations, Denbury agrees
to more particularly describe in the Workplan any non-material adverse
environmental conditions or liabilities associated with its current operations
and its plans, including time frames, to correct, remediate or mitigate the
conditions as well as to describe its environmental compliance program
including its program to assure compliance with applicable laws and regulations
concerning NORM.   Specifically among other issues,  Denbury agrees to address
the Weaver Tank Battery site at Diamond Field and the lawsuits styled Pete
Reynolds vs. Denbury Management and Henderson, et al vs. Texaco, Inc.





Signature Page
                                     129
<PAGE>   135
Notwithstanding the foregoing, NationsBank agrees that in the event due to (a)
weather conditions, (b) delays caused by regulatory authorities, or (c) other
circumstances beyond the control of Denbury, Denbury is unable to comply with a
requisite set forth in this Schedule notwithstanding its diligent efforts to do
so, the time period set forth herein for compliance with respect to such item
shall be extended for such additional time as may be required provided that
Denbury diligently works toward satisfaction of such requisite, and further
provided that no time period shall be extended for more than 180 days.





Signature Page
                                     130

<PAGE>   1
                                   EXHIBIT 12

                             DENBURY RESOURCES INC.
               COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

<TABLE>
<CAPTION>
                                                                                                            NINE MONTHS ENDED
                                                             YEARS ENDED DECEMBER 31,                         SEPTEMBER 30,
                                           -----------------------------------------------------------  ----------------------------
                                                                                             PRO FORMA                     PRO FORMA
                                            1992       1993      1994      1995      1996      1996      1996      1997      1997
                                           -------    -------   -------   -------   -------   --------  -------   -------   --------
<S>                                        <C>        <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>    
Earnings:
  Pretax income from continuing
    operations .........................   $  (335)   $ 1,114   $ 1,881   $ 1,081   $14,056   $13,035   $ 7,272   $16,878   $13,243
Fixed charges ..........................        18         99     1,180     2,161     4,080    14,729     3,385       498     8,474
                                           -------    -------   -------   -------   -------   -------   -------   -------   -------
  Earnings .............................      (317)     1,213     3,061     3,242    18,136    27,874    10,657    17,376    21,717
                                           -------    -------   -------   -------   -------   -------   -------   -------   -------
Fixed Charges:
  Interest expense .....................         8         83     1,146     2,085     1,993    12,642     1,530       387     8,363
  Interest component of rent expense ...        10         16        34        76       116       116        81       111       111
  Imputed preferred divided ............        --         --        --        --     1,281     1,281     1,153        --        --
  Preferred dividend tax effect ........        --         --        --        --       690       690       621        --        --
                                           -------    -------   -------   -------   -------   -------   -------   -------   -------
    Fixed charges ......................   $    18    $    99   $ 1,180   $ 2,161   $ 4,080   $14,729   $ 3,385   $   498   $ 8,474
                                           -------    -------   -------   -------   -------   -------   -------   -------   -------
Ratio of earnings to fixed .............        (a)      12.3       2.6       1.5       4.4       1.9       3.1      34.9       2.6
                                           =======    =======   =======   =======   =======   =======   =======   =======   =======
</TABLE>

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

(a)  Earnings were inadequate to cover fixed charges as there was a $317,000
     deficiency.

<PAGE>   1
 
   
                                                                   EXHIBIT 23(A)
    
 
                         INDEPENDENT AUDITORS' CONSENT
 
   
     We consent to the use in Pre-Effective Amendment No. 1 to the Registration
Statement of Denbury Resources Inc. on Form S-3 of our report dated February 21,
1997, on the consolidated financial statements of Denbury Resources Inc.,
appearing and incorporated by reference in the prospectus, which is part of this
Registration Statement and of our report dated February 21, 1997, relating to
the financial statement schedule appearing elsewhere and incorporated by
reference in the Registration Statement.
    
 
     We also consent to the reference to us under the heading "Experts" in such
Prospectus.
 
DELOITTE & TOUCHE
 
Chartered Accountants
 
Calgary, Alberta
   
January 21, 1997
    

<PAGE>   1
 
                                                                   EXHIBIT 23(B)
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
   
     We hereby consent to the use in the Prospectus constituting part of this
Registration Statement on Form S-3 of Denbury Resources Inc. of our report dated
December 19, 1997 relating to the statement of revenues and direct operating
expenses of Chevron U.S.A. Inc.'s working interest in the Heidelberg Fields
acquired by Denbury Resources Inc., which appears in such Prospectus. We also
consent to the reference to us under the heading "Experts" in such Prospectus.
    
 
PRICE WATERHOUSE LLP
 
San Francisco, California
   
December 21, 1997
    

<PAGE>   1
                                                                  EXHIBIT  23(c)

[NETHERLAND, SEWELL & ASSOCIATES, INC. LOGO]





           CONSENT OF INDEPENDENT PETROLEUM ENGINEERS AND GEOLOGISTS


          We hereby consent to references to our firm and to our reports
effective December 31, 1995; December 31, 1996; and December 31, 1997 in the
Registration Statement on Form S-3 of Denbury Resources Inc., a Canadian 
corporation, and Denbury Management, Inc., a Texas corporation, to be filed
with the Securities and Exchange Commission on or about January 21, 1998.  We
also consent to the reference of our firm under the headings "Experts" in such
Registration Statement.



                                           NETHERLAND, SEWELL & ASSOCIATES, INC.




                                           By: /s/ FREDERIC D. SEWELL
                                               -------------------------------
                                               Frederic D. Sewell
                                               President


Dallas, Texas
January 21, 1998

                                               

<PAGE>   1

                                                                    EXHIBIT 25.1


                     SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C. 20549

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

                                  FORM T-1

  STATEMENT OF ELIGIBILITY AND QUALIFICATION UNDER THE TRUST INDENTURE ACT
                          OF 1939 OF A CORPORATION
                        DESIGNATED TO ACT AS TRUSTEE

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

                                      
CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO
SECTION 305(b)(2)____.

                  CHASE BANK OF TEXAS, NATIONAL ASSOCIATION
        (formerly known as TEXAS COMMERCE BANK NATIONAL ASSOCIATION)
             (Exact name of trustee as specified in its charter)

ORGANIZED UNDER THE LAWS OF                                75-1992896
THE UNITED STATES OF AMERICA                            (I.R.S. employer
(State of incorporation                                identification no.)
if not a National Bank)

P.O. BOX 2320                                                  75221-2320
DALLAS,TEXAS                                                   (Zip Code)
(Address of principal executive offices)

LEE BOOCKER
CHASE BANK OF TEXAS, NATIONAL ASSOCIATION
600 TRAVIS
HOUSTON, TEXAS 77002
(713) 216-2448
(Name, address and telephone
number of agent for service)

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

                          DENBURY MANAGEMENT, INC.
             (Exact name of obligor as specified in its charter)

                                      
TEXAS                                                           75-2294373

(State or other jurisdiction of                            (I.R.S. employer
incorporation or organization)                              identification no.)

17304 PRESTON ROAD, SUITE 200
DALLAS,TEXAS                                                        75252
(Address of obligor's principal executive offices)                (Zip Code)


                    % SENIOR SUBORDINATED NOTES DUE 2008
                     (Title of the indenture securities)

                                      1
<PAGE>   2
ITEM 1.          GENERAL INFORMATION.

                 Furnish the following information as to the Trustee:

                 (a)      Name and address of each examining or supervising
                 authority to which it is subject.

        NAME                                                  ADDRESS
    --------------------------------------------------------------------------
    Comptroller of the Currency                            Washington, D.C.
    Federal Reserve Bank                                   Dallas, Texas
    Federal Deposit Insurance Corporation                  Washington, D.C.
    National Bank Examiners                                Dallas, Texas

                 (b)      Whether it is authorized to exercise corporate trust
                 powers.

                 Yes.

ITEM 2.          AFFILIATIONS WITH THE OBLIGOR.

                 If the obligor is an affiliate of the Trustee, describe each
                 such affiliation.

                 None.

ITEM 16.         LIST  OF   EXHIBITS.

                 List below all exhibits filed as part of this statement of
                 eligibility:

<TABLE>
                 <S>              <C>
                 Exhibit 1.       A copy of the Articles of Association of the Trustee as now in effect.
                 Exhibit 2.       A copy of the certificate of authority of the Trustee to commence business.
                 Exhibit 3.       A copy of the authorization of the Trustee to exercise corporate trust powers.
                 Exhibit 4.       A copy of the existing bylaws of the Trustee.
                 Exhibit 5.       Not Applicable.
                 Exhibit 6.       The consents of the United States institutional trustees required by Section 321(b) of
                                  the Trust Indenture Act of 1939.
                 Exhibit 7.       A copy of the latest report of condition of the Trustee published pursuant to law or
                                  the requirements of its supervising or examining authority.
                 Exhibit 8.       Not Applicable.
                 Exhibit 9.       Not Applicable.
</TABLE>





                                       2
<PAGE>   3
<TABLE>
                         <S>               <C>
                         Exhibit 1.        Incorporated by reference to exhibit bearing the same designation and previously filed
                                           with the Securities and Exchange Commission as exhibit to the Form S-3 File
                                           No. 333-34045.
                          Exhibit 2        Incorporated by reference to exhibit bearing the same designation and
                                           previously filed with the Securities and Exchange Commission as
                                           exhibit to the Form S-3 File No. 333-34045.
                          Exhibit 3.       Incorporated by reference to exhibit bearing the same designation and
                                           previously filed with the Securities and Exchange Commission as
                                           exhibit to the Form S-3 File No. 333-34045.
                          Exhibit 4.       Incorporated by reference to exhibit bearing the same designation and
                                           previously filed with the Securities and Exchange Commission as
                                           exhibit to the Form S-3 File No.333-34045.
                          Exhibit 6.       Incorporated herewith.
                          Exhibit 7.       Incorporated by reference to exhibit bearing the same designation and
                                           previously filed with the Securities and Exchange Commission as
                                           exhibit to the Form S-3 File No. 333-34045.
</TABLE>

                          NOTE: All Exhibits with a File No. reference were
                          filed under former name of Texas Commerce Bank
                          National Association

          The answer to Item 2 is based in part on information provided or
confirmed by the obligor.  The accuracy and completeness of such information is
hereby disclaimed by the Trustee.





                                       3
<PAGE>   4
                                   SIGNATURE


          Pursuant to the requirements of the Trust Indenture Act of 1939, the
Trustee, Chase Bank of Texas, National Association, a national banking
association organized and existing under the laws of the United States of
America, has duly caused this statement of eligibility to be signed on its
behalf by the undersigned, thereunto duly authorized, all in the City of
Dallas, and State of Texas, on the 15th day of January 1998.



                                     CHASE BANK OF TEXAS, NATIONAL ASSOCIATION



                                     By: /s/ MICHAEL A. SCRIVNER
                                        ------------------------------------
                                     Name:   Michael A. Scrivner
                                     Title:  Vice President


                                      4
<PAGE>   5
                                   EXHIBIT 6


          Chase Bank of Texas, National Association, as a condition to
qualification under the Trust Indenture Act of 1939, consents that reports of
examinations by federal, state, territorial, or district authorities may be
furnished by such authorities to the Securities and Exchange Commission of the
United States upon request of said Commission for said reports, as provided in
Section 321 of said Trust Indenture Act of 1939.

                                      CHASE BANK OF TEXAS, NATIONAL ASSOCIATION


                                      By: /s/ MICHAEL A. SCRIVNER
                                         -----------------------------------
                                      Name:   Michael A. Scrivner
                                      Title:  Vice President
                                      Date:   January 15, 1997





                                       5


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission