UNIT CORP
10-Q, 1998-08-10
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>
                              Form 10-Q

                  SECURITIES AND EXCHANGE COMMISSION
                       Washington, D.C.  20549


         [x] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                OF THE SECURITIES EXCHANGE ACT OF 1934
             For the Quarterly Period ended June 30, 1998
                                  OR

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

                    Commission File Number 1-9260


                           UNIT CORPORATION
        (Exact name of registrant as specified in its charter)

           Delaware                          73-1283193
(State or other jurisdiction of           (I.R.S. Employer
incorporation or organization)           Identification No.)

       1000 Kensington Tower I, 7130 South Lewis,  Tulsa, Oklahoma 74136
               (Address of principal executive offices)
                              (Zip Code)

                             (918) 493-7700
         (Registrant's telephone number, including area code)

                                 None
         (Former name, former address and former fiscal year,
                    if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to
such filing requirements for the past 90 days.
                      Yes    X        No _______

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

 Common Stock, $.20 par value                25,547,165
             Class                  Outstanding at August 3, 1998











<PAGE>
                           UNIT CORPORATION

                                INDEX


                                                                       Page
PART I.   Financial Information:                                      Number

          Item 1 - Financial Statements (Unaudited)

              Consolidated Condensed Balance Sheets
                June 30, 1998 and December 31, 1997                      2

              Consolidated Condensed Statements of Operations
                Three and Six Months Ended June 30, 1998 and 1997        3

              Consolidated Condensed Statements of Cash Flows
                Six Months Ended June 30, 1998 and 1997                  4

              Notes to Consolidated Condensed Financial Statements       5

              Report of Review by Independent Accountants                8

          Item 2 - Management's Discussion and Analysis of Financial
                     Condition and Results of Operations                 9

PART II.   Other Information:

          Item 1 - Legal Proceedings                                    14

          Item 2 - Changes in Securities                                14

          Item 3 - Defaults Upon Senior Securities                      14

          Item 4 - Submission of Matters to a Vote of
                     Security Holders                                   14

          Item 5 - Other Information                                    15

          Item 6 - Exhibits and Reports on Form 8-K                     15


Signatures                                                              16














                                    1
<PAGE>
                    PART I.  FINANCIAL INFORMATION
Item 1.                  Financial Statements
                  UNIT CORPORATION AND SUBSIDIARIES
                CONSOLIDATED CONDENSED BALANCE SHEETS
                                                 June 30,  December 31,
                                                   1998        1997
ASSETS                                          ----------  ----------
- ------                                         (Unaudited)
Current Assets:                                     (In thousands)
    Cash and cash equivalents                   $     594   $     458
    Accounts receivable                            14,658      19,813
    Other                                           6,913       5,741
                                                ----------  ----------
        Total current assets                       22,165      26,012
                                                ----------  ----------
Property and Equipment:
    Total cost                                    393,042     362,587
    Less accumulated depreciation, depletion,
      amortization and impairment                 202,033     192,613
                                                ----------  ----------
        Net property and equipment                191,009     169,974
                                                ----------  ----------
Other Assets                                        6,507       6,511
                                                ----------  ----------
Total Assets                                    $ 219,681   $ 202,497
                                                ==========  ==========
LIABILITIES AND SHAREHOLDERS' EQUITY
- ------------------------------------
Current Liabilities:
    Current portion of long-term debt           $   1,286   $     286
    Accounts payable                               12,214      11,112
    Accrued liabilities                             8,161       7,854
    Gas Purchaser Prepayments                         439         441
                                                ----------  ----------
        Total current liabilities                  22,100      19,693
                                                ----------  ----------
Natural Gas Purchaser Prepayments (Note 2)          1,318       1,765
                                                ----------  ----------
Long-Term Debt                                     66,400      54,614
                                                ----------  ----------
Deferred Income Taxes                              18,759      17,560
                                                ----------  ----------
Shareholders' Equity:
    Preferred stock, $1.00 par value, 5,000,000
      shares authorized, none issued                  -           -
    Common stock $.20 par value, 40,000,000
      shares authorized, 25,550,665 and
      25,514,836 shares issued, respectively        5,112       5,103
    Capital in excess of par value                 82,248      82,043
    Retained earnings                              23,835      21,875
    Treasury stock, at cost, 15,000 and
      9,863 shares, respectively                      (91)       (156)
                                                ----------  ----------
        Total shareholders' equity                111,104     108,865
                                                ----------  ----------
Total Liabilities and Shareholders' Equity      $ 219,681   $ 202,497
                                                ==========  ==========
              The accompanying notes are an integral part of the
                  consolidated condensed financial statements.
                                    2
<PAGE>
UNIT CORPORATION AND SUBSIDIARIES
CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS (UNAUDITED)


                                 Three Months Ended    Six Months Ended
                                      June 30,             June 30,
                                   1998      1997       1998       1997
                               ---------- ---------- ---------- ----------
                                 (In thousands except per share amounts)

Revenues:
    Contract drilling          $  15,495  $  10,277  $  30,383  $  21,314
    Oil and natural gas           10,408      9,546     19,759     22,805
    Other                            151        (17)       161          9
                               ---------- ---------- ---------- ----------
            Total revenues        26,054     19,806     50,303     44,128
                               ---------- ---------- ---------- ----------
Expenses:
    Contract drilling:
        Operating costs           12,053      8,578     24,540     17,307
        Depreciation
          and amortization         1,479      1,003      2,874      1,915
    Oil and natural gas:
        Operating costs            3,900      3,175      7,276      6,703
        Depreciation, depletion
          and amortization         4,021      2,906      7,531      6,063
    General and administrative     1,272      1,201      2,507      2,318
    Interest                       1,276        644      2,359      1,304
                               ---------- ---------- ---------- ----------
            Total expenses        24,001     17,507     47,087     35,610
                               ---------- ---------- ---------- ----------
Income Before Income Taxes         2,053      2,299      3,216      8,518
                               ---------- ---------- ---------- ----------
Income Tax Expense:
    Current                           10         16         57         59
    Deferred                         808        851      1,199      3,153
                               ---------- ---------- ---------- ----------
            Total income taxes       818        867      1,256      3,212
                               ---------- ---------- ---------- ----------
Net Income                     $   1,235  $   1,432  $   1,960  $   5,306
                               ========== ========== ========== ==========
Net Income Per Common Share:
    Basic                      $     .05  $     .06  $     .08  $     .22
                               ========== ========== ========== ==========
    Diluted                    $     .05  $     .06  $     .08  $     .22
                               ========== ========== ========== ==========







              The accompanying notes are an integral part of the
                  consolidated condensed financial statements.


                                    3

<PAGE>
UNIT CORPORATION AND SUBSIDIARIES
CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED)
                                                         Six Months Ended
                                                              June 30,
                                                         1998        1997
                                                      ----------  ----------
                                                          (In thousands)
Cash Flows From Operating Activities:
    Net Income                                        $   1,960   $   5,306
    Adjustments to reconcile net income
      to net cash provided by
      operating activities:
        Depreciation, depletion and amortization         10,569       8,145
        Deferred income tax expense                       1,199       3,290
        Other-net                                           219         217
    Changes in operating assets and liabilities
      increasing (decreasing) cash:
        Accounts receivable                               5,155       2,461
        Accounts payable                                  3,824       1,935
        Natural gas purchaser
          prepayments (Note 2)                             (449)       (423)
        Other-net                                          (865)       (947)
                                                      ----------  ----------
            Net cash provided by
              operating activities                       21,612      19,984
                                                      ----------  ----------

Cash Flows From (Used In) Investing Activities:
    Capital expenditures                                (34,567)    (15,198)
    Proceeds from disposition of assets                     463         189
    Other-net                                              (118)       (153)
                                                      ----------  ----------
            Net cash used in investing activities       (34,222)    (15,162)
                                                      ----------  ----------
Cash Flows From (Used In) Financing Activities:
    Net borrowings (payments) under line of credit       13,000      (4,800)
    Net payments of notes payable
      and long-term debt                                   (214)        -
    Proceeds from stock options                              51         162
    Other-net                                               (91)        (41)
                                                      ----------  ----------
            Net cash provided by (used in)
              financing activities                       12,746      (4,679)
                                                      ----------  ----------
Net Increase in Cash and Cash Equivalents                   136         143

Cash and Cash Equivalents, Beginning of Year                458         547
                                                      ----------  ----------
Cash and Cash Equivalents, End of Period              $     594   $     690
                                                      ==========  ==========
Supplemental Disclosure of Cash Flow Information:
    Cash paid during the six months ended June 30, for:

        Interest                                      $   2,057   $   1,317
        Income taxes                                  $      20   $      40

              The accompanying notes are an integral part of the
                 consolidated condensed financial statements.
                                    4
<PAGE>
                    UNIT CORPORATION AND SUBSIDIARIES
           NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS

NOTE 1 - BASIS OF PREPARATION AND PRESENTATION
- ----------------------------------------------

    In the opinion of the Company, the accompanying unaudited consolidated
condensed financial statements contain all adjustments necessary (all
adjustments are of a normal recurring nature) to present fairly the financial
position of Unit Corporation as of June 30, 1998 and the results of its
operations for the three and six month periods ended June 30, 1998 and 1997 and
cash flows for the six months ended June 30, 1998 and 1997.  Results for the
three and six months ended June 30, 1998 are not necessarily indicative of the
results to be realized during the full year.  The year end consolidated
condensed balance sheet data was derived from audited financial statements but
does not include all disclosures required by generally accepted accounting
principles.  The condensed financial statements should be read in conjunction
with the Company's Annual Report on Form 10-K for the year ended December 31,
1997.

NOTE 2 - NATURAL GAS PURCHASER PREPAYMENTS
- -------------------------------------------

    Due to a settlement agreement ("Settlement Agreement") which terminated at
December 31, 1997, the Company has a prepayment balance of $1.8 million at June
30, 1998 representing proceeds received from a natural gas purchaser as
prepayment for natural gas. This amount is net of natural gas recouped and net
of certain amounts disbursed to other owners (such owners, collectively with the
Company are referred to as the "Committed Interest") for their proportionate
share of the prepayments. The remaining unrecouped prepayment balance at
December 31, 1997 is payable in equal annual payments over a five year period.
The first payment of $441,000 was made on June 1, 1998.

























                                    5

<PAGE>
NOTE 3 - EARNINGS PER SHARE
- ---------------------------

    The following data shows the amounts used in computing earnings per share
for the Company.


                                   For the Three Months Ended June 30, 1998
                                ---------------------------------------------
                                  INCOME       WEIGHTED SHARES     PER-SHARE
                                (NUMERATOR)     (DENOMINATOR)        AMOUNT
                                -----------    ---------------     ----------

    Basic earnings per common
      share                     $ 1,235,000       25,546,000       $    0.05
                                                                   ==========
    Effect of dilutive
      stock options                  -               298,000
                                -----------       ----------
    Diluted earnings per common
      share                     $ 1,235,000       25,844,000       $    0.05
                                ===========       ==========       ==========

                                   For the Three Months Ended June 30, 1997
                                ---------------------------------------------
                                   INCOME      WEIGHTED SHARES     PER-SHARE
                                (NUMERATOR)     (DENOMINATOR)        AMOUNT
                                -----------    ---------------     ----------

    Basic earnings per common
      share                     $ 1,432,000       24,178,000       $    0.06
                                                                   ==========
    Effect of dilutive
      stock options                  -               370,000
                                -----------       ----------
    Diluted earnings per common
      share                     $ 1,432,000       24,548,000       $    0.06
                                ===========       ==========       ==========

    The following options and their average exercise prices were not included in
the computation of diluted earnings per share because the option exercise prices
were greater than the average market price on common shares for the three months
ended June 30,:

                                   1998        1997
                                ----------   ---------
    Options                       171,000       6,500
                                ==========   =========
    Average exercise price      $    8.80    $  10.00
                                ==========   =========







                                    6

<PAGE>
                                   For the Six Months Ended June 30, 1998
                                ---------------------------------------------
                                  INCOME       WEIGHTED SHARES     PER-SHARE
                                (NUMERATOR)     (DENOMINATOR)        AMOUNT
                                -----------    ---------------     ----------

    Basic earnings per common
      share                     $ 1,960,000       25,546,000       $    0.08
                                                                   ==========
    Effect of dilutive
      stock options                   -              295,000
                                -----------       ----------
    Diluted earnings per common
      share                     $ 1,960,000       25,841,000       $    0.08
                                ===========       ==========       ==========

                                   For the Six Months Ended June 30, 1997
                                ---------------------------------------------
                                  INCOME       WEIGHTED SHARES     PER-SHARE
                                (NUMERATOR)     (DENOMINATOR)        AMOUNT
                                -----------    ---------------     ----------

    Basic earnings per common
      share                     $ 5,306,000       24,174,000       $    0.22
                                                                   ==========
    Effect of dilutive
      stock options                  -               367,000
                                -----------       ----------
    Diluted earnings per common
      share                     $ 5,306,000       24,541,000       $    0.22
                                ===========       ==========       ==========

    The following options and their average exercise prices were not included in
the computation of diluted earnings per share because the option exercise prices
were greater than the average market price on common shares for the six months
ended June 30,:

                                   1998         1997
                                ----------   ---------
    Options                       171,000       6,500
                                ==========   =========
    Average exercise price      $    8.80    $  10.00
                                ==========   =========

NOTE 4 - NEW ACCOUNTING PRONOUNCEMENTS
- --------------------------------------

   In June 1997, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 131, Disclosures about Segments of an
Enterprise and Related Information ("FAS 131").  FAS 131 amends standards
regarding the disclosure of information on business segments in annual financial
statements and also requires selected financial information on segments for
interim financial statements.  FAS 131 will become effective for the Company
when the annual financial statements are filed at the end of the 1998 fourth
quarter.  The Company does not anticipate that FAS 131 will significantly impact
the disclosure of its segment information.

                                    7

<PAGE>
               REPORT OF REVIEW BY INDEPENDENT ACCOUNTANTS




To the Board of Directors and Shareholders
Unit Corporation

We have reviewed the accompanying consolidated condensed balance sheet of Unit
Corporation and subsidiaries as of June 30, 1998, and the related consolidated
condensed statements of operations for the three and six months month periods
ended June 30, 1998 and 1997 and cash flows for the six month periods ended June
30, 1998 and 1997.  These financial statements are the responsibility of the
Company's management.

We conducted our review in accordance with standards established by the American
Institute of Certified Public Accountants.  A review of interim financial
information consists principally of applying analytical review procedures to
financial data and making inquiries of persons responsible for financial and
accounting matters.  It is substantially less in scope than an audit conducted
in accordance with generally accepted auditing standards, the objective of which
is the expression of an opinion regarding the financial statements taken as a
whole.  Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that
should be made to the accompanying condensed consolidated financial statements
for them to be in conformity with generally accepted accounting principles.

We have previously audited, in accordance with generally accepted auditing
standards, the consolidated balance sheet of Unit Corporation and subsidiaries
at December 31, 1997, and the related consolidated statements of operations,
changes in shareholders' equity and cash flows for the year then ended (not
presented herein); and our report dated February 17, 1998 expressed an
unqualified opinion on those consolidated financial statements.  In our opinion,
the information set forth in the accompanying consolidated condensed balance
sheet at December 31, 1997, is fairly stated in all material respects in
relation to the consolidated balance sheet from which it has been derived.



PricewaterhouseCoopers  L L P


Tulsa, Oklahoma
July 28, 1998












                                     8

<PAGE>
Item 2.   Management's Discussion and Analysis of Financial Condition and
Results of Operations
- -------------------------------------------------------------------------

FINANCIAL CONDITION
- -------------------

     The Company's bank loan agreement (the "Credit Agreement") provides for a
total loan facility of $100 million with a current available borrowing value
(the "Loan Value") of $85 million. The Loan Value under the revolving credit
facility is subject to a semi-annual redetermination calculated as the sum a
percentage of the discounted future value of the Company's oil and natural gas
reserves, as determined by the banks, plus the greater of (i) 50 percent of the
appraised value of the Company's contract drilling rigs or (ii) two times the
previous 12 months cash flow from the contract drilling rigs, limited in either
case to $20 million.  The revolving credit facility covers four years with a
three year term loan thereafter.  At June 30, 1998 borrowings under the Credit
Agreement totaled $62.1 million. The average bank debt interest rate in the
second quarter of 1998 was 7.0 percent compared to the average interest rate of
7.1 percent in the second quarter of 1997. A facility fee of .375 of 1 percent
is charged for any unused portion of the Loan Value.

     The Company's shareholders' equity at June 30, 1998 was $111.1 million
resulting in a ratio of long-term debt-to-equity of .61 to 1.  The Company's
primary source of liquidity and capital resources in the near- and long-term
will consist of cash flow from operating activities and available borrowings
under the Company's Credit Agreement.  At June 30, 1998 and December 31, 1997,
the Company had working capital of $65,000 and $6.3 million, respectively.  Net
cash provided by operating activities for the first six months of 1998 was $21.6
million as compared to $20.0 million for the first six months of 1997.  The
increase in 1998, as compared to 1997, was primarily due to decreases in
accounts receivable and increases in accounts payable partially offset by lower
net income as a result of lower spot market natural gas and oil prices.

     During the first six months of 1998, the Company had capital additions of
$31.8 million.  Approximately 80 percent of the expenditures were for producing
property acquisitions and oil and natural gas exploration and development
drilling while the remainder was for the Company's contract drilling operations.
The Company purchased an interest in approximately 300 producing properties in
the first quarter of 1998 for $4.8 million along with continuing its development
drilling projects through both the first and second quarters. The Company
plans to continue its focus on development drilling during the remainder of
1998.  Depending, in part, on commodity pricing, the Company anticipates it will
spend approximately $40 million on its oil and natural gas capital expenditures
program in 1998 and approximately $10.0 million on domestic contract drilling
capital expenditures.  These expenditures are anticipated to be within the
constraints of available cash to be provided by operating activities and the
Company's existing Credit Agreement.  Since a large portion of the Company's
capital expenditures are discretionary and directed toward increasing reserves
and future growth, current operations are not dependent on the Company's ability
to obtain funds outside of the Company's current Credit Agreement.

     The Company continues to explore opportunities to expand its contract
drilling operations outside the continental United States, specifically into
areas of Central and South America.  To date, the Company has not concluded any
such arrangements and there is no assurance that it will.  The Company has not

                                     9

<PAGE>
previously conducted international contract drilling operations, but anticipates
that any such operations would involve a number of additional political,
economic, currency, tax and other risks and costs not generally encountered in
its domestic operations.

     On November 20, 1997, the Company acquired Hickman Drilling Company,
pursuant to an Agreement and Plan of Merger ("the Merger Agreement") entered
into by and between the Company, Hickman Drilling Company and all of the holders
of the outstanding capital stock of Hickman Drilling Company (the "Selling
Stockholders").  As part of this acquisition, the Selling Stockholders received
promissory notes in the aggregate principal amount of $5,000,000. These notes
are to be paid in five equal annual installments commencing January 2, 1999. The
notes bear interest at the Chase Prime Rate which at December 31, 1997 and June
30, 1998 was 8.5 percent.

     Due to a settlement agreement ("Settlement Agreement") which terminated at
December 31, 1997, the Company has a prepayment balance of $1.8 million at June
30, 1998 representing proceeds received from a natural gas purchaser as
prepayment for natural gas. This amount is net of natural gas recouped and net
of certain amounts disbursed to other owners (such owners, collectively with the
Company are referred to as the "Committed Interest") for their proportionate
share of the prepayments. The remaining unrecouped prepayment balance at
December 31, 1997 is payable in equal annual payments over a five year period.
The first payment of $441,000 was made on June 1, 1998. The price per Mcf under
the Settlement Agreement was substantially higher than current spot market
prices.  The impact of the higher price received under the Settlement Agreement
increased pre-tax income approximately $368,000 in the first six months of 1997.

     Both average oil and spot market natural gas prices received during the
first six months of 1998 were substantially lower than during the same period in
1997. The average oil price received by the Company during the first six
months of 1998 was $13.78 per barrel which was a $6.51 per barrel decrease.
Average spot market natural gas prices decreased to $1.94 per Mcf, a $.40 per
Mcf decrease.  Oil prices within the industry remain largely dependent upon
world market developments for crude oil.  Prices for natural gas are influenced
by weather conditions and supply imbalances, particularly in the domestic
market, and by world wide oil price levels.  Since natural gas comprises
approximately 86 percent of the Company's reserves, the large drop in spot
market natural gas prices had a significant adverse effect on the value of the
Company's reserves at the end of the quarter and further price declines could
cause the Company to reduce the carrying value of its oil and natural gas
properties.  Such decreases, if sustained, will also adversely effect the
Company's cash flow in future quarters and possibly beyond due to reduced oil
and natural gas revenues and if continued over an extended period will adversely
impact demand for the Company's contract drilling rigs.  Declines in natural gas
and oil prices could also adversely effect the semi-annual determination of the
loan value under the Company's Credit Agreement since this determination is
calculated on the value of the Company's oil and natural gas reserves and its
drilling rigs.  Any such reduction would reduce the amount available to the
Company under the Credit Agreement, which in turn, would impact the Company's
ability to carry out its capital projects.

     Subsequent to June 30, 1998, the natural gas industry experienced a
significant downturn in natural gas and oil prices.  The Company's reserves were
determined at June 30, 1998 using a natural gas price of approximately $2.25 per
Mcf for natural gas and an oil price of $13.25 per barrel.  At August 4, 1998,

                                     10

<PAGE>
the natural gas prices received by the Company fell to approximately $1.85 per
Mcf for natural gas and $12.25 for oil per barrel.  This decrease in natural gas
and oil prices would have had a significant effect on the standard measure of
oil and natural gas value of the Company's reserves at June 30, 1998 and would
have resulted in a provision to reduce the carrying value of oil and natural gas
properties of approximately $15 million.  If prices continue to remain depressed
at the end of the third quarter of 1998, the Company would be required to write
down the carrying value of its oil and natural gas properties.

     The Company's ability to utilize its full complement of drilling rigs is
restricted due to the lack of qualified labor and certain supporting equipment
not only within the Company but in the industry as a whole.  The Company's
ability to utilize its drilling rigs at any given time is dependent on a number
of factors, including but not limited to, the price of both oil and natural gas,
the availability of labor and the Company's ability to supply the type of
equipment required.  The Company's management expects that these factors will
continue to influence the Company's rig utilization throughout 1998 and into
1999.

     In the third quarter of 1994, the Company's Board of Directors authorized
the Company to purchase up to 1,000,000 shares of the Company's outstanding
common stock on the open market.  Since that time, 150,100 shares have been
repurchased at prices ranging from $2.50 to $9.69 per share.  In the first
quarter of 1998 and 1997, 19,863 and 23,892 of the purchased shares,
respectively, were used as the Company's matching contribution to its 401(K)
Employee Thrift Plan.  At June 30, 1998 and 1997, 15,000 and 9,863 treasury
shares, respectively, were held by the Company.

     The Company has reviewed the impact of the year 2000 software conversion as
it relates to the Company's information systems.  Based on this review, the
Company believes the financial costs associated with this issue, including
internal programming and implementation cost, will not be material.  The work
needed to implement the necessary changes will be performed by the Company's
information systems personnel during the last half of 1998 and is scheduled to
be effective January 1, 1999.

SAFE HARBOR STATEMENT
- ---------------------

     With the exception of historical information many of the matters discussed
in this report are forward looking statements, within the meaning of the Private
Securities Litigation Reform Act of 1995, that involve risks and uncertainties
and actual results could differ materially from those discussed. Generally,
these statements relate to projections involving the anticipated revenues to be
received from the Company's oil and natural gas production, sources of capital,
the utilization rate of its drilling rigs, growth of its oil and natural gas
reserves and well performance and the Company's anticipated debt. As with any
forward looking statement, these statements are subject to a number of factors
that may tend to influence the accuracy of the  statements and the projections
upon which the statements are based. All phases of the Company's operations are
subject to a number of influences outside the control of the Company, any one of
which, or a combination of which, could materially affect the results of the
Company's operations.  A more thorough discussion of some of these factors and
their possible impact on the Company is provided in the Company's Annual Report
on Form 10-K for the year ended December 31, 1997 filed with the Securities and
Exchange Commission.


                                   11
<PAGE>
RESULTS OF OPERATIONS
- ---------------------

Second Quarter 1998 versus Second Quarter 1997
- ----------------------------------------------

      The Company reported net income of $1,235,000 in the second quarter of
1998 as compared to net income of $1,432,000 for the second quarter of 1997.
Increases in contract drilling dayrates and the number of drilling rigs utilized
were offset by decreases in prices received for natural gas and oil and reduced
production of oil between the comparative quarters.

      Oil and natural gas revenues increased 9 percent in the second quarter
of 1998 as compared to the second quarter of 1997. Natural gas production
increased 28 percent and oil production decreased 8 percent between the two
quarters while average natural gas prices and oil prices received by the Company
decreased 2 and 32 percent, respectively. Wells added through the Company's
development drilling program were primarily responsible for the increase in
natural gas production while oil production declined due to the Company's
focus on replacing natural gas reserves as opposed to oil reserves. An increase
of 2 percent in spot market natural gas prices received between the comparative
quarters was offset by the return to spot market pricing for production from
wells previously covered by the Settlement Agreement, which terminated at
December 31, 1997 and provided for prices higher than current spot market
prices, as discussed above.  The impact of the higher price received under the
Settlement Agreement increased pre-tax income by approximately $197,000 in the
second quarter of 1997.

      Oil and natural gas operating margins (revenues less operating costs)
decreased to 63 percent in the second quarter of 1998 as compared to 67
percent in the second quarter of 1997.  Margins were adversely affected by the
declines in average natural gas and oil prices. Total operating costs increased
23 percent as the Company continues to add wells through its development
drilling and acquisition programs.  Depreciation, depletion and amortization
("DD&A") increased 38 percent as the Company's average DD&A rate per equivalent
barrel for the second quarter of 1998 was $4.97 compared with $4.35 in the
second quarter of 1997.

      Contract drilling revenues increased 51 percent for the comparative
quarters due to increases in both the number of rigs utilized and dayrates.  Due
in part to the Hickman Drilling Company acquisition, rig utilization averaged
25.7 rigs in the second quarter of 1998 as compared to 18.7 rigs in the second
quarter of 1997.  Contract drilling operating margins (revenues less operating
costs) were 22 percent in the second quarter of 1998 and 17 percent in the
second quarter of 1997.

      General and administrative expense increased 6 percent in the second
quarter of 1998 when compared with the second quarter of 1997 as certain
employee costs increased.  Interest expense increased 98 percent as the average
long-term debt outstanding increased 84 percent between the comparative quarters
due to the debt associated with the acquisition of 9 drilling rigs in the fourth
quarter of 1997 and continued expenditures for the Company's development
drilling and acquisition programs. The average interest rate incurred by the
Company was 7.1 percent for both comparative quarters.



                                    12

<PAGE>
Six Months 1998 versus Six Months 1997
- -------------------------------------------------

      Net income for the first six months of 1998 was $1,960,000 as compared to
$5,306,000 for the first six months of 1997. As the contract drilling segment
experienced increases in the number of rigs utilized and dayrates in 1998, the
improvements were offset by declines incurred by the exploration and production
segment in oil and natural gas prices and decreased oil production.

      Oil and natural gas revenues decreased 13 percent in the first six
months of 1998 as compared to the first six months of 1997.  Natural gas
production increased 16 percent while oil production decreased 13 percent
between the comparative periods. Average natural gas and oil prices received by
the Company decreased 19 and 32 percent, respectively, during the first six
months of 1998.  Average natural gas prices were down due to a decrease of 17
percent in spot market natural gas prices received between the comparative
quarters along with the return to spot market pricing for production from wells
covered by the Settlement Agreement, which terminated at December 31, 1997 and
provided for prices higher than current spot market prices, as discussed above.
The impact of the higher price received under the Settlement Agreement increased
pre-tax income by approximately $368,000 during the first six months of 1997.

      Oil and natural gas operating margins (revenues less operating costs)
declined from 71 percent in the first six months of 1997 to 63 percent in the
first six months of 1998 due to lower natural gas and oil prices and lower oil
production in 1998. Total operating costs increased 9 percent due to additional
cost associated with the addition of wells through development drilling and
acquistions.  Depreciation, depletion and amortization ("DD&A") increased 24
percent due to higher natural gas production between the comparative periods and
from an increase in the Company's average DD&A rate per equivalent barrel from
$4.35 in the first six months of 1997 to $4.87 for the first six months of 1998.

      Contract drilling revenues increased 43 percent for the comparative six
month periods as rig utilization increased from an average of 19.4 rigs
operating in the first six months of 1997 to 25.3 rigs in the first six months
of 1998.  Contract drilling operating margins (revenue less operating costs)
were unchanged at 19 percent in both six month periods of 1998 and 1997.

      General and administrative expense increased 8 percent during the
comparative six month periods as certain employee costs increased.  Interest
expense increased 81 percent due to a 68 percent increase in the average long-
term debt outstanding in the first six months of 1998 compared to the first six
months of 1997. The average interest rate incurred by the Company also increased
from 7.1 to 7.5 percent.













                                    13

<PAGE>
                       PART II.  OTHER INFORMATION

Item 1. Legal Proceedings
- --------------------------

        Not applicable

Item 2. Changes in Securities
- ------------------------------

        Not applicable

Item 3. Defaults Upon Senior Securities
- ----------------------------------------

        Not applicable

Item 4. Submission of Matters to a Vote of Security Holders
- ------------------------------------------------------------

        On May 6, 1998 the Company held its Annual Meeting of Stockholders.
        At the meeting the following matters were voted on, with each
        receiving the votes indicated:

          I.   Election of Nominees Earle Lamborne, William B. Morgan and
               John H. Williams to serve as directors.

                                       Numbers of    Against or
                 Nominee                Votes For     Withheld
               --------------         -----------    ----------

               Earle Lamborn           21,966,027      241,492
               William B. Morgan       21,984,919      222,600
               John H. Williams        21,973,057      234,462

               The following directors, whose term of office did not expire at
               this annual meeting, continue as directors of the Company: King
               P. Kirchner, Don Cook, J. Michael Adcock, John G. Nikkel and
               John S. Zink.

          II.  Ratification of the appointment of PricewaterhouseCoopers L L P
               (previously Coopers & Lybrand L.L.P.) as the Company's
               independent certified public accountants for the fiscal year
               1998.

                         For       -    21,180,150
                         Against   -        36,283
                         Abstain   -       991,086









                                     14

<PAGE>
Item 5.   Other Information
- -----------------------------

               As set forth in the Company's Proxy Statement for the 1998
          Annual Meeting of Stockholders, stockholder proposals submitted
          pursuant to Rule 14a-8 for inclusion in the Company's proxy materials
          for the 1999 Annual Meeting of Stockholders must be received by the
          Company no later than Novemer 25, 1998.

               Any stockholder who intends to present a proposal at the 1999
          Annual Meeting and has not sought inclusion of the proposal in the
          Company's proxy materials pursuant to Rule 14a-8, must provide the
          Company with notice of such proposal no later than February 8, 1999.

Item 6.   Exhibits and Reports on Form 8-K
- --------------------------------------------

          (a)   Exhibits:

                10.1.23   Loan Agreement dated April 30, 1998.

                15        Letter re:  Unaudited Interim Financial Information.

                27        Financial Data Schedule

          (b)   No reports on Form 8-K were filed during the quarter ended
                June 30, 1998.






























                                     15

<PAGE>
                                SIGNATURES


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


             UNIT CORPORATION

Date:         August 6, 1998         By:    /s/  John G. Nikkel
       ---------------------------          ------------------------
                                            JOHN G. NIKKEL
                                            President, Chief Operating
                                            Officer and Director

Date:         August 6, 1998         By:    /s/  Larry D. Pinkston
       ---------------------------          ------------------------
                                            LARRY D. PINKSTON
                                            Vice President, Chief
                                            Financial Officer
                                            and Treasurer



































                                    16

























































<PAGE>






                            LOAN AGREEMENT



                             Dated as of
                            April 30, 1998


                          between and among


                           UNIT CORPORATION
                UNIT DRILLING AND EXPLORATION COMPANY
                MOUNTAIN FRONT PIPELINE COMPANY, INC.
                        UNIT DRILLING COMPANY
                        UNIT PETROLEUM COMPANY
                       PETROLEUM SUPPLY COMPANY
                                 AND
                       UNIT ENERGY CANADA INC.

                             "Borrowers"

                                 and

                BANK OF OKLAHOMA, NATIONAL ASSOCIATION

                           BANKBOSTON, N.A.

                          NATIONSBANK, N.A.

                      LOCAL FEDERAL BANK, FSB

                               "Banks"

                                 and

                BANK OF OKLAHOMA, NATIONAL ASSOCIATION

                               "Agent"














<PAGE>
                            LOAN AGREEMENT

      THIS LOAN AGREEMENT, dated as of April 30, 1998, ("Agreement"), is
entered into among UNIT CORPORATION, a Delaware corporation ("Unit"), UNIT
DRILLING AND EXPLORATION COMPANY, a Delaware corporation, MOUNTAIN FRONT
PIPELINE COMPANY, INC., an Oklahoma corporation, UNIT DRILLING COMPANY, an
Oklahoma corporation, UNIT PETROLEUM COMPANY, an Oklahoma corporation,
PETROLEUM SUPPLY COMPANY, an Oklahoma corporation, and UNIT ENERGY CANADA INC.,
an Alberta, Canada corporation, each with its principal place of business at
1000 Kensington Tower 1, 7130 South Lewis, Tulsa, Oklahoma  74136 (collectively
the "Borrowers") and BANK OF OKLAHOMA, NATIONAL ASSOCIATION, with principal
offices at Bank of Oklahoma Tower, Seven East Second Street, Tulsa, Oklahoma
74172 ("BOK"); BANKBOSTON, N.A. with principal offices at 100 Federal Street,
Boston, Massachusetts 02110 ("BankBoston"); NATIONSBANK, N.A., with offices at
515 South Boulder, Tulsa, Oklahoma, 74119 ("Nations"); and LOCAL FEDERAL BANK,
FSB, with offices at 2250 East 73rd, Suite 625, Tulsa, Oklahoma 74136 ("Local
Federal") (BOK, BankBoston, Nations and Local each being sometimes referred to
herein, individually, as a "Bank", and collectively as the "Banks"); and BOK as
Agent for the Banks (in such capacity, herein referred to as the "Agent").

      WITNESSETH:

      WHEREAS, the Borrowers have applied to the Banks for a certain revolving
line of credit (the "Line Commitment") in the maximum principal amount of ONE
HUNDRED MILLION AND NO/100 DOLLARS ($100,000,000) to be evidenced by Borrowers'
joint and several promissory notes dated as of even date herewith for the
purposes of (i) paying off the aggregate unpaid balance of the existing loan
owing by the Borrowers to BOK, BankBoston, Nations and American National
Bank and Trust Company of Shawnee ("ANB") under that certain Loan Agreement
dated as of August 3, 1995, among Borrowers, BOK, BankBoston, Nations'
predecessor-in-interest (Bank IV, Oklahoma, N.A.) and ANB, as Banks, and BOK, as
the Agent for the Banks, as amended by First, Second and Third Amendments
thereto dated as of September 4, 1996, December 16, 1996 and February 9, 1998,
respectively (collectively the "Prior Loan Agreement"), (ii) funding future oil
and gas property acquisitions and exploration and development drilling expenses,
(iii) the issuance of standby letters of credit from time to time in accordance
with and subject to the terms, provisions and conditions hereof, (iv) funding
general working capital requirements and (v) funding drilling operations and
equipment expenditures;

      WHEREAS, pursuant to the terms and provisions hereof, the unpaid
principal balance of the Line Commitment will be converted no later than May 1,
2002 to a thirty-six (36) month term loan  (the "Term Commitment") (the Line
Commitment and the Term Commitment are sometimes collectively referred to herein
as the "Commitments"); and

      WHEREAS, the Banks are willing to extend the Commitments to the Borrowers
upon the terms and conditions herein set forth, all of which are material to the
Banks and without which the Banks would not be willing to extend the Commitments
described above.

      NOW, THEREFORE, in consideration of the mutual covenants and agreements
contained herein, and other good and valuable consideration, receipt of which is
acknowledged by the parties hereto, the parties agree, as follows:





<PAGE>
                              ARTICLE I

                         CERTAIN DEFINITIONS

      When used herein, the following terms shall have the following meanings:

      1.1  "Applicable Prime Rate" shall mean the annual rate of interest
announced by Chase Manhattan Bank (National Association) New York, New York
("Chase") from time to time as its prime or base rate, which shall be the rate
used by Chase as a base or standard for pricing purposes and which shall not
necessarily be its "best" or lowest rate.  Should Chase cease to announce a
prime or base rate, or should it be merged, consolidated, liquidated or
dissolved in such a manner that it loses its separate corporate or banking
identity, then the Applicable Prime Rate shall be the Prime Rate published by
the Wall Street Journal in its "Money Rates" column, or a similar rate if such
rate ceases to be published.  Any change in the Applicable Prime Rate shall be
effective as of the date of the change.

      1.2  "Business Day" shall mean a day other than a Saturday, Sunday or a
day upon which banks in the State of Oklahoma are closed to business generally.

      1.3  "CERCLA" shall mean the Comprehensive Environmental Response,
Compensation and Liability Act of 1980, as amended, together with all
regulations and rulings promulgated with respect thereto.

      1.4  "Closing Date" shall mean the date of this Agreement.

      1.5  "Collateral" shall mean the Current Collateral and the Additional
Collateral, as defined herein in Article IV.

      1.6  "Commitments" shall collectively mean the Line Commitment and the
Term Commitment.

      1.7  "Consolidated Tangible Net Worth" shall mean the sum of (a) the par
value of Unit's consolidated capital stock (excluding treasury stock), (b)
Unit's consolidated additional paid-in capital, and (c) the amount of Unit's
consolidated retained earnings minus any consolidated intangible assets such as
organizational costs or good will all as reflected in the financial statements
furnished to the Banks under this Agreement.

      1.8  "Conversion Date" shall have the meaning ascribed thereto in
Section 2.1 hereof below.

      1.9  "Corresponding Source of Funds" shall mean in the case of any Libor
Rate Funding Segment of the Libor Rate Portion, the proceeds of hypothetical
receipts by the Agent through a branch, subsidiary or affiliate of one or more
Dollar deposits in the interbank eurodollar market at the beginning of the Libor
Rate Funding Period corresponding to such Libor Rate Funding Segment, having
maturities approximately equal to such Libor Rate Funding Period and in an
aggregate amount approximately equal to such Libor Rate Funding Segment.

      1.10 "Current Assets" shall mean the total amount of Unit's current
assets determined in accordance with GAAP on a consolidated basis.

      1.11 "Current Liabilities" shall mean the total amount of Unit's current
liabilities determined in accordance with GAAP on a consolidated basis,
excluding, however (i) current maturities of indebtedness of the Borrowers to
the Banks as provided in this Agreement.
                                  2
<PAGE>
      1.12 "Current Maturities of Long Term Debt" shall mean obligations under
Long Term Debt due within one year or less, as reflected on Unit's financial
statements furnished to the Banks pursuant to this Agreement.

      1.13 "Current Ratio" shall mean the ratio of Current Assets to Current
Liabilities (i.e., Consolidated Working Capital Ratio).

      1.14 "Default Rate" shall mean the Applicable Prime Rate plus five
percentage points (5.0%) per annum.

      1.15 "Dollar", "Dollars" and the symbol "$" shall mean lawful money of
the United States of America.

      1.16 "Environmental Laws" shall mean Laws, including without limitation
federal, state or local Laws, ordinances, rules, regulations, interpretations
and orders of courts or administrative agencies or authorities relating to
pollution or protection of the environment (including, without limitation,
ambient air, surface water, groundwater, land surface and subsurface strata),
including without limitation CERCLA, SARA, RCRA, HSWA, OPA, HMTA, TSCA and other
Laws relating to (i) Polluting Substances or (ii) the manufacture, processing,
distribution, use, treatment, handling, storage, disposal or transportation of
Polluting Substances.

      1.17 "ERISA" shall mean the Federal Employee Retirement Income Security
Act of 1974, as amended, together with all regulations and rulings promulgated
with respect thereto.

      1.18 "Event of Default" shall mean any of the events specified in
Section 8.1 of this Agreement, and "Default" shall mean any event, which
together with any lapse of time or giving of any notice, or both, would
constitute an Event of Default.

      1.19 "GAAP" shall mean generally accepted accounting principles applied
on a consistent basis in all material respects to those applied in the preceding
period.  Unless otherwise indicated herein, all accounting terms will be defined
according to GAAP.

      1.20 "hereby", "herein", "hereof", "hereunder" and similar such terms
shall mean and refer to this Agreement as a whole and not merely to the specific
section, paragraph or clause in which the respective word appears.

      1.21 "HMTA" shall mean the Hazardous Materials Transportation Act, as
amended, together with all regulations and rulings promulgated with respect
thereto.

      1.22 "HSWA" shall mean the Hazardous and Solid Waste Amendments of 1984,
as amended, together with all regulations and rulings promulgated with respect
thereto.

      1.23 "Indebtedness" shall mean and include any and all: (i) indebtedness,
obligations and liabilities of the Borrowers to the Banks and the Agent incurred
or which may be incurred hereafter pursuant to the terms of this Agreement or
any of the other Loan Documents, and any extensions, renewals, substitutions,
amendments and increases in amount thereof, including such amounts as may be
evidenced by the Notes and all lawful interest, letters of credit fees, service
fees, commitment fees and other charges, and all reasonable costs and expenses
incurred in connection with the preparation, filing and recording of the Loan

                                  3
<PAGE>
Documents, including attorneys fees; (ii) all reasonable costs and expenses,
including attorneys' fees, paid or incurred by the Banks or the Agent in
enforcing or attempting to enforce collection of any Indebtedness and in
enforcing or realizing upon or attempting to enforce or realize upon any
collateral or security for any Indebtedness and in protecting and preserving the
Banks' interest in the Indebtedness or any collateral or security for any
Indebtedness in any bankruptcy or reorganization proceeding, including interest
on all sums so expended by the Banks or the Agent accruing from the date upon
which such expenditures are made until paid, at an annual rate equal to the
Default Rate; (iii) sums expended by the Banks in curing any Event of Default or
Default of the Borrowers under the terms of the Loan Documents or any other
security agreement or other writing evidencing or securing the payment of the
Notes together with interest on all sums so expended by the Banks or the Agent
accruing from the date upon which such expenditures are made until paid, at an
annual rate equal to the Default Rate; and (iv) all "Indebtedness" or "Secured
Indebtedness" as said terms are defined in each of the Loan Documents.

      1.24 "Intercreditor Agreement" shall mean the Intercreditor Agreement
dated of even date herewith among BOK, Nations, BankBoston, Local Federal and
the Agent.

      1.25 "Laws" shall mean all statutes, laws, ordinances, regulations,
orders, writs, injunctions, or decrees of the United States, any state or
commonwealth, any municipality, any foreign country, any territory or
possession, or any Tribunal.

      1.26 "Letters of Credit" shall mean any and all letters of credit issued
by BOK pursuant to the request of any of the Borrowers in accordance with the
provisions hereof which at any time remain outstanding and subject to draw by
the beneficiary, whether in whole or in part.

      1.27 "Libor Rate" shall mean for any day the rate per annum of interest
(rounded upwards, if necessary, to the nearest 1/16 of 1%) (which shall be the
same for each day in the Libor Rate Funding Period selected) determined pursuant
to the following formula:
                                                        Rate
                                                ------------------
           Libor Rate =            1.00 - Libor Reserve Percentage

The Libor Rate for any Libor Rate Funding Period for the Libor Rate Option
will be determined by the Agent on the basis of the Libor Reserve Percentage in
effect two (2) London Business Days prior to the first day of a Libor Rate
Funding Period and the applicable Rate as described below.  "Rate" means for any
day the rate per annum of interest (rounded upwards, if necessary, to the
nearest 1/16 of 1%) quoted for the "London Interbank Offered Rates (LIBOR)" by
Agent's Capital Markets Division for the selected Libor Rate Funding Period
available hereunder for the Libor Rate Option two (2) London Business Days prior
to the first day of such Libor Rate Funding Period.  "Libor Reserve Percentage"
means, relative to any Libor Rate Funding Period available hereunder for the
Libor Rate Option, the reserve percentage (expressed as a decimal) equal to
the maximum aggregate reserve requirements (including all basic, emergency,
supplemental, marginal and other reserves and taking into account any
transitional adjustments or other scheduled changes in reserve requirements)
specified under regulations issued from time to time by the Federal Reserve
System Board and then applicable to assets or liabilities consisting of and
including "Eurocurrency Liabilities", as currently defined in Regulation D of
the Federal Reserve System Board, having a term approximately equal or

                                  4
<PAGE>
comparable to such Libor Rate Funding Period.  The Agent shall give prompt
notice to the Borrowers of the Libor Rate so determined or adjusted, which
determination or adjustment shall be conclusive if made in good faith absent
manifest or demonstrable error.

      1.28 "Libor Rate Funding Period" shall have the meaning assigned to that
term or described in Section 2.5(b) hereof.

      1.29 "Libor Rate Funding Segment" shall mean that portion of the
outstanding principal amount of the Notes to which a Libor Rate Option applies
for the applicable Libor Rate Funding Period beginning on a particular day and
ending on another particular day.

      1.30 "Libor Rate Option" shall have the meaning assigned to that term in
Section 2.5(a) hereof.

      1.31 "Lien" shall mean any mortgage, pledge, security interest,
encumbrance, lien or charge of any kind (including any agreement to give any of
the foregoing, any conditional sale or other title retention agreement, any
lease in the nature thereof, and the filing of or agreement to give any
financing statement or other similar form of public notice under the Laws
of any jurisdiction).

      1.32 "Lien Notice" shall mean notice received or obtained by the Agent
or the Banks or knowledge obtained by the Agent or the Banks of any Lien being
claimed (whether valid or not) by any Person, other than the Agent or the Banks
or a trustee on behalf of the Agent or the Banks, with respect to the Borrowers'
assets and properties.

      1.33 "Line Loan" shall have the meaning ascribed to it in Section 2.1 of
this Agreement.

      1.34 "Loan Documents" shall mean this Agreement, the Notes, the Security
Instruments and all other documents, instruments and certificates executed and
delivered to the Banks and the Agent by the Borrowers pursuant to the terms of
this Agreement or the Security Instruments previously delivered to the Agent
pursuant to the Prior Loan Agreement.

      1.35 "Loan Value" shall have the meaning assigned to that term or
described in Section 3.1(b) hereof.

      1.36 "London Business Day" shall mean a day for dealing in deposits in
Dollars by and among banks in the London interbank market which is also a
Business Day.

      1.37 "Long Term Debt" shall mean all obligations of Unit and its
consolidated subsidiaries reflected on the consolidated financial statements
furnished to the Banks that are due in more than one year.

      1.38 "Majority Banks" shall mean BOK and such other Banks (including
permitted assignees of any of the Banks) whose aggregate Pro Rata Shares
constitute sixty seven percent (67%).

      1.39 "Mineral Interests" shall mean all of the Borrowers' mineral and
leasehold interests, including without limitation, producing oil and gas and
other working or royalty interests therein.


                                  5
<PAGE>
      1.40 "Notes" shall have the meaning ascribed to it in Section 2.2 of
this Agreement together with each and every extension, renewal, modification,
replacement, substitution and change in form thereof which may be from time to
time and for any term or terms effected.

      1.41 "OPA" shall mean the Oil Pollution Act of 1990, as amended, together
with all regu-lations and rulings promulgated with respect thereto.

      1.42 "Official Body" shall mean any government or political subdivision
or any agency, authority, bureau, central bank, commission, department or
instrumentality of either, or any court, tribunal, grand jury or arbitrator, in
each case whether foreign or domestic.

      1.43 "Options" shall mean the Prime Rate Option and the Libor Rate
Option, as the case may be.

      1.44 "Person" shall mean and include an individual, a partnership, a
joint venture, a corporation, a trust, an unincorporated organization, and a
government or any department, agency or political subdivision thereof.

      1.45 "Polluting Substances" shall mean all pollutants, contaminants,
chemicals or industrial, toxic or hazardous substances or wastes and shall
include, without limitation, any flammable explosives, radioactive materials,
oil, hazardous materials, hazardous or solid wastes, hazardous or toxic
substances or related materials defined in CERCLA/SARA, RCRA/HSWA and in the
HMTA; provided, in the event either CERCLA/SARA, RCRA/HSWA or HMTA is amended so
as to broaden the meaning of any term defined thereby, such broader meaning
shall apply subsequent to the effective date of such amendment and, provided
further, to the extent that the Laws of any State or other Tribunal establish a
meaning for "hazardous substance," "hazardous waste," "hazardous RCRA/HSWA
material," "solid waste" or "toxic substance" which is broader than that
specified in CERCLA/SARA or HMTA, such broader meaning shall apply.

      1.46 "Prime Rate Option" shall have the meaning assigned to that term in
Section 2.5(a) hereof.

      1.47 "Pro Rata Share" shall mean for each of the Banks the percentage
determined from time to time by dividing the principal amount outstanding under
such Bank's respective Note by the aggregate principal amount outstanding under
all of the Banks' Notes, pursuant to which each of BOK and Nations' initial Pro
Rata Share will be thirty percent (30%), BankBoston's initial Pro Rata Share
will be  twenty-five percent (25%) and Local Federal's initial Pro Rata Share
will be fifteen percent (15%).

      1.48 "RCRA" shall mean the Resource Conservation and Recovery Act of
1976, as amended, together with all regulations and rulings promulgated with
respect thereto.

      1.49 "Redetermination Date" shall mean April 1 and October 1 of each year.

      1.50 "SARA" shall mean the Superfund Amendments and Reauthorization Act
of 1987, as amended, together with all regulations and rulings promulgated with
respect thereto.

      1.51 "Security Agreement" shall have the meaning assigned to that term
in Article IV of this Agreement.


                                  6
<PAGE>
      1.52 "Security Instruments" shall mean the Security Agreement and all
other financing statements, mortgages, assignments, security agreements,
documents or writings of any and all amendments and supplements thereto,
granting, conveying, assigning, transferring or in any manner providing the
Agent with a security interest or mortgage lien in any property as security for
the repayment of all or any part of the Indebtedness.

      1.53 "Taxes" shall mean all taxes, assessments, fees, or other charges
or levies from time to time or at any time imposed by any Laws or by any
Tribunal.

      1.54 "Term Loan" shall have the meaning ascribed to it in Section 2.4(a)
of this Agreement.

      1.55 "Total Liabilities" shall mean the total amount of all liabilities
of Unit, as reflected on the consolidated financial statements, including
capitalized leases and excluding deferred taxes.

      1.56 "Tribunal" shall mean any municipal, state, commonwealth, Federal,
foreign, territorial or other sovereign, governmental entity, governmental
department, court, commission, board, bureau, agency or instrumentality.

      1.57 "TSCA" shall mean the Toxic Substances Control Act,  as amended,
together with all regulations and rulings promulgated with respect thereto.

      1.58 "Working Capital Provided from Operations" shall mean Unit's
consolidated net income plus (minus) Unit's consolidated depreciation,
noncurrent deferred income taxes, and other nonworking capital charges
(credits), as such items are reflected in the financial statements furnished
to the Banks pursuant to this Agreement.


                              ARTICLE II

                                LOANS

      2.1  Revolving Line of Credit.  Each of the Banks agrees, severally and
not jointly, upon the terms and subject to the conditions hereinafter set forth,
to establish a combined revolving line of credit and make loans (the "Line
Loan") to the Borrowers administered by the Agent from the Closing Date until
May 1, 2002 (the "Conversion Date"), in such amounts as the Borrowers may
from time to time request and BOK will issue letters of credit on Borrowers'
account so long as the aggregate unpaid principal amount of the Line Loan
advanced, outstanding and unpaid at any time under the Notes as cash advances
thereon (including the unfunded portions of outstanding Letters of Credit issued
pursuant to Section 2.3(b) hereof) does not exceed the lesser of (a)
$100,000,000 (or such lesser amount as may be established from time to time
pursuant to Section 2.7 hereof) (the "Commitment Amount") or (b) the Borrowing
Base (as determined in accordance with Section 3.1 hereof).   In no event shall
any of the Banks be obligated to make advances under this Agreement in excess of
the stated principal amount of each Bank's respective Note.

      2.2  Notes.  The Borrowers' obligation to repay the Line Loan made by
the Banks, together with interest accruing thereon, shall be evidenced by
Borrowers' four (4) joint and several promissory notes of even date herewith, in
the form of Exhibits A-1, A-2, A-3 and A-4 attached hereto (which promissory
notes, together with all extensions, renewals, substitutions, replacements,

                                  7
<PAGE>
rearrangements and changes in form thereof are each sometimes hereinafter
referred to, individually, as a "Note", and, collectively, as the "Notes").

      2.3  Advances; Letters of Credit.

           (a)  Advances.  Subject to the terms, conditions and limitations
      set forth in this Agreement, each Bank severally, and not jointly, agrees
      to advance its Pro Rata Share of each advance.

           Except for advances to reimburse the Banks for drafts paid under
      Letters of Credit, the Banks shall not be obligated to make any advance
      which is (i) in an amount less than $100,000 or, if greater than $100,000,
      in an amount not an integral multiple of $50,000, (ii) requested on or
      after the Conversion Date, or (iii) requested to be made while any Default
      or Event of Default is in existence, or when the making of such advance
      would cause a Default or an Event of Default to occur.  Within such
      limitations and the limitations set forth in this Agreement, Borrowers may
      borrow, repay and reborrow under the Line Loan until the Conversion Date.

           Borrowers shall give Agent notice in writing (via fax) or by
      telephone at or before 12:00 o'clock noon (Tulsa, Oklahoma time) on the
      proposed date of any advance except that (other than for initial Line Loan
      advance hereunder on the Closing Date) Borrowers shall provide three (3)
      Business Days prior notice for any advance request for which the LIBOR
      Option is selected.  Each such advance shall be made at the office of the
      Agent by crediting the amount of the advance to Unit's demand deposit
      account with the Agent styled as follows:  Unit Corporation Account No.
      209907163 (the "General Account").  In consideration of Banks and the
      Agent permitting Borrowers to make requests for Line Loan advances by
      telephone, Borrowers jointly state that they are fully aware of the risks
      attendant thereto, and agree to accept all such risks and to hold Banks
      and the Agent harmless from any loss which any Borrowers may incur by
      reason of any such nonwritten request, other than such as result from a
      Bank's or the Agent's gross negligence or wanton disregard.

           (b)  Letters of Credit.  Upon the Borrowers' application from time
      to time by use of BOK's standard form Letter of Credit Application
      Agreement and subject to the terms and provisions therein and herein set
      forth, BOK agrees to issue standby letters of credit on behalf of the
      Borrowers under the Line Commitment, provided that (i) any letters of
      credit issued on behalf of or on the account of Borrowers with an expiry
      date later than the Conversion Date, will, at the Banks' sole option, be
      fully secured and collateralized by cash or cash equivalent acceptable to
      the Banks in their sole discretion and held thereby from and after
      maturity, until expiration or cancellation of such letter(s) of credit or
      payment of all draws thereon on demand of the Banks, (ii) no letter of
      credit will be issued on behalf of or for the account of the Borrowers if
      at the time of issuance the outstanding amount of the unpaid Line Loan
      (including the aggregate outstanding and unfunded amount of unexpired
      letters of credit then existing) under the Line Commitment as evidenced by
      the Notes plus the maximum amount of such Letter of Credit then being
      requested would exceed the Borrowing Base, and (iii) in no event shall the
      aggregate amount of such out-standing letters of credit exceed
      $20,000,000.  If any letter of credit is drawn upon at any time, each
      amount drawn, whether a full or partial draw thereon, shall be paid by
      wire transfer and reflected by the Banks as an advance on the Notes, based
      on the Banks' Pro Rata Share, effective as of the date the sight draft is

                                  8
<PAGE>
      honored and such letter of credit shall be canceled immediately, or
      partially reduced, as may be appropriate, upon such wire trans-fer.  In
      consideration of BOK's agreement to issue letters of credit hereunder, the
      Borrowers agree to pay to the Agent letter of credit fees equal to two
      percent (2%) per annum on the face amount of each letter of credit plus
      normal processing fees, which such fees shall be paid to the Agent at the
      time of issuance of each applicable letter of credit by an automatic
      debit in such amount to the General Account (the "Letter of Credit
      Fees").  All letters of credit issued by BOK pursuant to this Agreement
      shall specify the volume, source and delivery period pertaining to the
      transaction.

      2.4  Principal.  The principal balance of the Notes shall be paid as
      follows:

           (a)  The principal balance of the Notes remaining unpaid as of the
      Conversion Date shall be payable in thirty-six (36) monthly installments,
      commencing on June 1, 2002, and continuing on the first (1st) day of each
      month thereafter through May 1, 2005 (the "Maturity"), as more fully
      described in the Notes (the "Term Loan").

           (b)  Except as herein provided, Borrowers may from time to time
      prepay, without penalty or premium, all or any part of the Notes.  Amounts
      so prepaid prior to the Conversion Date or amounts of the Line Commitment
      otherwise unused (subject to the other provisions of this Agreement) shall
      be available to re-advance or advance, as the case may be, as one or more
      advances under the Line Loan.  Prepayments made on or after the Conversion
      Date shall be applied first to interest and then to the outstanding
      principal balance of and principal installments due under the Notes in the
      inverse order of maturity.  Each payment made pursuant to this Section
      2.4(b) shall be in addition to, and not in lieu of, all other payments of
      principal, interest, fees, costs, expenses and other amounts otherwise
      required by the Notes.  Nothing in this Section 2.4(b) shall affect the
      rights of the Agent or the Banks to require payment in full of the Notes
      prior to Maturity due to an acceleration of the Notes upon an Event of
      Default.

           (c)  If at any time the aggregate amount of advances outstanding
      under the Line Loan or the Term Loan, as applicable, plus the aggregate
      liability of the Banks under Letters of Credit outstanding at such time
      shall exceed the Loan Value then in effect, Borrowers shall, within thirty
      (30) days after the Agent gives Borrowers written notice of such excess,
      (a) pay the principal balance of the Notes in an amount which is equal to
      or greater than such excess, together with interest on the amount so paid,
      or (b) comply with the requirements of Section 4.2(a) hereof.  If such
      payment is not received by the Agent on or before the last day of said
      thirty (30) day period, then notwithstanding Borrowers' compliance with
      clause (b) hereof above within ninety (90) days after the end of said
      thirty (30) day period, Borrowers shall pay the amount of such excess, as
      increased or decreased since the last calculation thereof, together with
      interest on the amount so paid.  Any payment made pursuant to the first
      two (2) sentences of this Section 2.4(c) shall be in addition to, and not
      in lieu of, all other payments of principal, interest, fees, costs,
      expenses and other amounts otherwise required and shall be applied first
      to interest and then to principal and, if such payment is made on or after
      the Conversion Date, such payment shall be applied to principal
      installments due under the Notes, in the inverse order of their maturity.

                                  9
<PAGE>
      In the event the Agent does not receive such payment in full on or before
      the last day of said ninety (90) day period: (x) if such day occurs prior
      to the Conversion Date, then, notwithstanding the terms of the Notes and
      this Agreement, all obligations of the Banks to make advances under the
      Line Loan and the obligation of BOK to issue Letters of Credit shall
      immediately terminate, and the aggregate principal balance of the Notes
      outstanding on the last day of said ninety (90) day period shall be
      payable in thirty-six (36) equal monthly installments, commencing on the
      first (1st) day of the month immediately following the month in which the
      end of said ninety (90) day period occurs and continuing on the first
      (1st) day of each month thereafter until paid, and (y) if such day occurs
      on or after the Conversion Date, then such nonpayment shall constitute an
      Event of Default.

      2.5  Interest.  The Notes shall bear interest and be payable as follows:

           (a)  Available Options.  Except as hereinafter provided, during the
      period commencing on the Closing Date and continuing through the
      Conversion Date, interest shall accrue on that portion of the aggregate
      principal amount of the Notes from time to time outstanding and on any
      past due interest prior to an Event of Default (collectively the
      "Debt") according to the following matrix:

           Percentage that                   Options
           the Debt Bears                    -------
           to the Loan Value       Prime Rate            Libor Rate
           -----------------       ----------            ----------
           Less than 50%      Applicable Prime Rate or   Libor Rate plus 0.750%

           50% - up to but    Applicable Prime Rate or   Libor Rate plus 1.00%
           not including 75%

           75% or more        Applicable Prime Rate or   Libor Rate plus 1.250%

      Except as hereinafter provided, during the period commencing on the
      earlier of the Conversion Date or May 1, 2002, and continuing through
      Maturity, interest shall accrue on the Debt according to the following
      matrix:

           Percentage that                   Options
           the Debt Bears                    -------
           to the Loan Value       Prime Rate            Libor Rate
           -----------------       ----------            ----------
           Less than 50%      Applicable Prime Rate
                              plus .25% or               Libor Rate plus 1.000%

           50% - up to but    Applicable Prime Rate
           not including 75%  plus .25% or               Libor Rate plus 1.250%

           75% or more        Applicable Prime Rate
                              plus .25% or               Libor Rate plus 1.500%


      In determining the percentage that the Debt bears to the Loan Value, the
      "Debt" and the "Loan Value" shall be the average of such respective
      amounts during the most recent calendar month preceding such
      determination.  The Applicable Prime Rate option described above in the

                                  10
<PAGE>
      matrices is hereinafter referred to as the "Prime Rate Option" and the
      Libor Rate interest option described above in the matrices is hereinafter
      referred to as the "Libor Rate Option".  The Prime Rate Option shall be
      computed on the basis of a year of 365 or 366 days, as the case may be and
      the Libor Rate Option shall be based on a year of 360 days and actual days
      elapsed.

           (b)  Operation of Options.  At the end of any applicable Libor Rate
      Funding Period, the Borrowers may either: (i) repay all outstanding
      balances of principal and interest to which such Libor Rate Funding Period
      applies; or (ii) select the Prime Rate Option or the Libor Rate Option to
      apply to a portion or all of such amounts affected by such Libor Rate
      Funding Period.  During an applicable Libor Rate Funding Period, the
      Borrowers may not prepay in part or in whole the outstanding principal
      balance of the Note to which such Libor Rate Option applies and the
      applicable Libor Rate Funding Period shall continue until the end of such
      period.

           If the Prime Rate Option is selected with respect to all or a
      portion of the Debt, then at any time provided that no Default or Event of
      Default has occurred and remains uncured, Unit, on behalf of the Borrowers
      may notify the Agent that the Borrowers wish to convert all or a portion
      of the Debt to the Libor Rate Option.  In such event, such designated
      outstanding balances of principal on the Notes shall convert to the
      Libor Rate Option.  As provided below in Section 2.5(g)(i), the Borrowers
      may prepay in part or in whole without premium or penalty the outstanding
      principal balance of the Notes to which such Prime Rate Option applies.

           At any time when the Borrowers shall select, convert to or renew
      the Libor Rate Option to apply to a portion or all of the Debt, it shall
      fix one or more periods of 30, 60, 90 or 180 days  during which such
      Option shall apply (the "Libor Rate Funding Period") provided, that each
      Libor Rate Funding Period shall begin on a London Business Day.

           In order to select, convert to or renew the Libor Rate Option,
      Borrowers shall provide the Agent with the date, which shall be a Business
      Day, on which the Libor Rate Option is to be effective, which date shall
      not be less than two (2) Business Days after the date on which the Agent
      is so notified.

           (c)  Interest Payment Dates.  Interest shall be payable on the Debt
      to which the Prime Rate Option applies on the first (1st) day of each
      calendar month, commencing on May 1, 1998.  Interest shall be payable on
      the Debt to which a Libor Rate Option applies at the conclusion of the
      applicable Libor Rate Funding Period, provided, however, that in
      the event that a Libor Rate Period of 180 days is selected, interest
      shall be payable no less frequently than quarterly.

           (d)  Interest Rate After Maturity.  Notwithstanding the provisions
      of Sections 2.5(a), 2.5(b) and 2.5(c) hereof, after Maturity, whether by
      acceleration or otherwise, the Debt shall bear interest at the fluctuating
      per annum rate equal to the sum of five percent (5%) per annum plus the
      Applicable Prime Rate and shall be payable on demand.

           (e)  Libor Rate Unascertainable - Impracticability.  If



                                  11
<PAGE>
                  (i)  on any date on which a Libor Rate would  otherwise be
           set the Agent shall have in good faith determined (which
           determination shall be conclusive) that:

                     (A)  adequate and reasonable means do not exist for
                ascertaining such Libor Rate,

                     (B)  a contingency has occurred which materially and
                adversely affects the interbank eurodollar market, or

                     (C)  the effective cost to the Banks of funding a
                proposed Libor Rate Option from a Corresponding Source of Funds
                shall exceed the Libor Rate applicable to such Libor Rate
                Funding Period, or

                 (ii)  at any time the Majority Banks shall have determined in
           good faith (which determination shall be conclusive) that the making,
           maintenance or funding of the Libor Rate Option has been made
           impracticable or unlawful by compliance by the Majority Banks in good
           faith with any Law or guideline or interpretation or administration
           thereof by any Official Body charged with the interpretation or
           administration thereof or with any request or directive of any such
           Official Body (whether or not having the force of law);

           then, and in any such event, the Agent may notify the Borrowers of
           such determination.  Upon such date as shall be specified in such
           notice (which shall not be earlier than the date such notice is
           given) the obligation of the Agent to allow the Borrowers to select,
           convert to or renew the Libor Rate Option shall be suspended
           until the Agent shall have later notified the Borrowers of such
           Majority Bank's determination in good faith (which determination
           shall be conclusive) that the circumstances giving rise to such
           previous determination no longer exists.

                If the Agent notifies the Borrowers of a determination under
           subsection (ii) of this Section 2.5(e), the Borrowers shall, as to
           the Libor Rate on the date specified in such notice either convert
           the designated portion of the Debt covered by any Libor Rate Option
           to the Prime Rate Option in accordance with Section 2.5(f) hereof or
           prepay such amount in accordance with Section 2.5(g) hereof.  Absent
           due notice from the Borrowers of conversion or prepayment, the Libor
           Rate automatically shall be converted to the Prime Rate Option upon
           such specified date.

                If at the time the Majority Banks make a determination under
           subsection (i) or (ii) of this Section 2.5(e) the Borrowers have
           previously notified the Agent that they wish to select, convert to or
           renew the Libor Rate Option with respect to a portion or all of the
           Debt but such Option has not yet gone into effect, such notifica-

           tion shall be deemed to provide for selection of, conversion to or
           renewal of the Prime Rate Option instead of the Libor Rate Option.

           (f)  Conversion or Renewal of Interest Rate Options.

                 (i)  Subject to the provisions of subsection 2.5(h) below,
           Borrowers shall have the right to designate or convert their option

                                  12
<PAGE>
           in accordance with the provisions hereof.  Borrowers may elect to
           have an alternative option apply or continue to apply to all or a
           portion of the Debt.  Each change in options shall be a conversion
           of the rate of interest applicable to the specified portion of the
           Debt.  The option shall be designated or converted in the following
           manner:

                     (A)  at the expiration of any Libor Rate Funding Period
                with respect to any Libor Rate Option, or

                     (B)  on the date specified in a notice by the Agent
                pursuant to Section 2.5(e) hereof with respect to conversions
                from the Libor Rate Option.

           Whenever the Borrowers desire to convert or renew any interest rate
           option, the Borrowers shall provide the Agent with the following
           information:

                     (C)  the date, which shall be a Business Day, on which
                the proposed conversion or renewal is to be made which date
                shall not be less than two (2) Business Days after the date on
                which Agent is so notified; and

                     (D)  the then applicable Option selected in accordance
                with Section 2.5(a) hereof.

           Notice having been so provided, after the date specified in such
           notice (telephonic or where applicable, in writing) interest shall be
           calculated upon the designated portion of the Debt as so converted or
           renewed.

                (ii) Absent due notice from the Borrowers of conversion or
           renewal in the circumstances described in Section 2.5(f)(i)(A)
           hereof, the Libor Rate for which such notice is not received shall be
           converted automatically to the Prime Rate Option on the last day of
           the expiring fund period.

           (g)  Prepayments.  Subject to the provisions of Section 2.5(h)
      hereof, the Borrowers shall have the right at their option from time to
      time to prepay the Notes in whole or part without premium or penalty:

                  (i)  at any time with respect to the Prime Rate Option,

                 (ii)  at the expiration of any Libor Rate Funding Period with
           respect to prepayment of the Libor Rate Option, or

                (iii)  on the date specified in a notice by the Agent pursuant
           to Section 2.5(e) hereof with respect to the Libor Rate Option.

      Whenever the Borrowers desire to prepay any part of the Debt, they shall
      provide notice to the Agent in writing setting forth the following
      information:

                 (iv)  the date, which shall be a Business Day, on which the
           proposed prepayment is to be made; and

                  (v)  the aggregate principal amount of such prepayment,
           which shall be an integral multiple of $100,000.
                                  13
<PAGE>
           (h)  Additional Compensation in Certain Circumstances.  With
      respect to the portion of the Debt covered by the Libor Rate Option, if
      any:

                  (i)  if any Law or guideline or interpretation or
           application thereof by any Official Body charged with the
           interpretation or administration thereof or compli-ance with any
           request or directive of any Official Body (whether or not having the
           force of law):

                     (A)  subjects any of the Banks to any tax or changes the
                basis of taxation with respect to this Agreement, the Notes, the
                Line Commitment or payments by the Borrowers of principal,
                interest or other amounts due from the Borrowers hereunder or
                under the Notes (except for taxes on the overall net income of
                such Bank(s) imposed by the jurisdiction in which such Bank(s)'
                principal office is located),

                     (B)  imposes, modifies or deems applicable any reserve,
                special deposit or similar requirement against assets held by,
                credit extended by, deposits with or for the account of, or
                other acquisition of funds by, such Bank(s) (other than
                requirements expressly included herein in the determi
                nation of the Libor Rate hereunder), or

                     (C)  imposes upon any of the Banks any other condition or
                expense with respect to this Agreement, the Notes or its
                making, maintenance or funding of any part of the Line
                Commitment, the Notes or any security therefor,

           and the result of any of the foregoing is to increase the cost to,
           reduce the income receivable by or impose any expense (including loss
           of margin) upon the Agent or such Banks with respect to this
           Agreement, the Notes or the funding of any part of the Line
           Commitment by an amount which such Bank(s) deem to be material (such
           Bank(s) being deemed for this purpose to have made, maintained or
           funded each funding period of the applicable Libor Rate Option from a
           Corresponding Source of Funds), the Agent shall from time to time
           notify the Borrowers of the amount determined in good faith by such
           Bank(s) (which determination shall be conclusive absent manifest or
           demonstrable error) to be necessary to compensate such Bank(s)
           for such increase in cost, reduction in income or additional
           expense.  Such amount shall be due and payable by the Borrowers to
           such Bank(s) ten (10) Business Days after such notice is given.

                 (ii)  In addition to the compensation required by subsection
           (i) of this Section 2.5(h), the Borrowers shall indemnify such
           Bank(s) against any loss or expense (including loss of margin) which
           such Bank(s) have sustained or incurred as a consequence of any:

                       (A)  payment, prepayment or conversion of the
                applicable Libor Rate Option on a day other than the last day of
                the Libor Rate Funding Period (whether or not such payment,
                prepayment or conversion is mandatory or automatic and whether
                or not such payment or prepayment is then due), or



                                  14
<PAGE>
                       (B)  attempt by the Borrowers to revoke (expressly, by
                later inconsistent notices or otherwise) in whole or part any
                notice stated herein to be irrevocable (the Agent having in its
                sole discretion the options (A) to give effect to such attempted
                revocation and obtain indemnity under this Section 2.5(h) or (B)
                to treat such attempted revocation as having no force or effect,
                as if never made).

           If any of the Banks sustain or incur any such loss or expense, the
           Agent shall from time to time notify the Borrowers of the amount
           determined in good faith by such Bank(s) (which determination shall
           be conclusive absent manifest or demonstrable error) to be necessary
           to indemnify such Bank(s) for such loss or expense (such Bank(s)
           being deemed for this purpose to have made, maintained or funded each
           Libor Rate Funding Segment of the applicable Libor Rate Option from a
           Corresponding Source of Funds).  Such amount shall be due and
           payable by the Borrowers to the Agent for the benefit of such Bank(s)
           ten (10) Business Days after such notice is given.

      2.6  Commitment Fees.  Borrowers jointly and severally agree to pay the
Agent on behalf of the Banks, within ten (10) days of their receipt of the
invoice therefor, commitment fees ("Commitment Fee" or "Commitment Fees"),
payable quarterly in arrears.  The Commitment Fees payable with respect to any
Period shall be determined by applying the rate of three-eights of one percent
(3/8ths of 1%) per annum to an amount which is equal to the unused portion of
the lesser of (a) the Commitment Amount which is in effect during such Period or
(b) the Loan Value.  In the event the Commitment Amount is reduced during any
Period, then the higher Commitment Fee shall be deemed to be in effect through
the last day of the month in which such reduction occurs, and the reduced
Commitment Fee shall be deemed to be in effect for the remainder of such Period.
For purposes of this Section 2.6, the term "Period" shall mean each calendar
quarter ending before the Conversion Date.  Commitment Fees shall be calculated
on the basis of the actual number of days elapsed (365 or 366) in a year of 365
days.

      2.7  Reductions in Commitment Amount.  Borrowers may from time to time
prior to the Conversion Date but no more frequently than once per calendar
quarter, upon at least ten (10) days' prior written notice to the Agent signed
by Unit on behalf of Borrowers, permanently reduce the Commitment Amount, but
only upon repayment of the amount, if any, plus the interest accrued and
unpaid thereon, by which the aggregate unpaid principal balance of the Notes
exceeds the reduced Commitment Amount.  Any such change shall be in the amount
of $100,000 or an integral multiple thereof.

      2.8  Origination Fee.  On or prior to the Closing Date, Borrower shall
pay to the Agent for and on behalf of the Banks a loan origination fee in the
aggregate amount of $85,000.

      2.9  Payments/Withholdings.  All payments and prepayments of principal,
interest, Commitment Fees, Origination Fee, and Letter of Credit Fees, shall be
made as and when due hereunder by Borrowers to the Agent and applied by the
Agent for and on behalf of the Banks as set forth in the Intercreditor
Agreement.  All payments by the Borrowers hereunder and under any of the other
Loan Documents shall be made without setoff or counterclaim and free and clear
of and without deduction for any taxes, levies, imposts, duties, charges, fees,
deductions, withholdings, compulsory loans, restrictions or conditions of any
nature now or hereafter imposed or levied by any jurisdiction or any political

                                  15
<PAGE>
subdivision thereof or taxing or other authority therein unless the Borrowers
are compelled by law to make such deduction or withholding.  If any such
obligation is imposed upon the Borrowers with respect to any amount payable by
it hereunder or under any of the other Loan Documents, the Borrowers will pay to
the Agent, for the account of the Banks or (as the case may be) the Agent, on
the date on which such amount is due and payable hereunder or under such other
Loan Documents, such additional amount in Dollars as shall be necessary to
enable the banks or the Agent to receive the same net amount which the Banks or
the Agent would have received on such due date had no such obligation been
imposed upon the Borrowers.  The Borrowers will deliver promptly to the Agent
certificates or other valid vouchers for all taxes or other charges deducted
from or paid with respect to payments made by the Borrowers hereunder or under
such other Loan Documents.

                             ARTICLE III

                              LOAN VALUE

      3.1  Determination of Loan Value.  The Loan Value shall be an amount
equal to the following:

           (a)  For the period beginning on the Closing Date and continuing
      through September 30, 1998; Eighty-five Million Dollars ($85,000,000);

           (b)  During each subsequent period thereafter beginning on a
      Redetermination Date, commencing with October 1, 1998 and ending on the
      day immediately preceding the next occurring Redetermination Date, the
      redetermined Loan Value, as hereinafter defined, as of the Redetermination
      Date which is the first day of such period.  Prior to each Redetermination
      Date, the Agent shall make a determination of (x) the amount of the loan
      value of the Current Collateral which shall be deemed to be the greater
      of  (i) fifty percent (50%) of the most current Rig Appraisal or (ii)  2 x
      the trailing twelve (12) months cash flow from Borrowers' drilling
      operations (drilling revenues minus direct drilling expenses), but in no
      event to exceed $20,000,000, and (y) the loan value of the Mineral
      Interests (the sum of clauses (x) and (y) above being collectively
      referred to herein as  the "Loan Value").  Upon such redetermination the
      Agent shall promptly notify the other Banks in writing of its
      determination of the Loan Value (including the Agent's determination of
      the value of the Mineral Interests portion of the Loan Value).  The Banks
      shall be deemed to have approved the Agent's redetermination of the Loan
      Value unless proper and timely objection is made pursuant to Section
      3.1(c) below.  If no such objection is made, the Agent shall notify the
      Borrowers of the redetermined Loan Value;

           (c)  If any Bank objects to the Agent's redetermination of the
      value of the Mineral Interests, it shall notify the Agent in writing
      within three (3) days of its receipt of the Agent's notice of the
      redetermined Loan Value.  The objecting Bank shall provide the Agent with
      its objection a copy of its determination of the value of the Mineral
      Interests.  Notwithstanding such objection, the Agent's determination
      thereof shall be deemed accepted by all of the Banks unless (x) the
      Majority Banks object to the Agent's Mineral Interest redetermination, and
      (y) the value of the Mineral Interests as calculated by at least
      two of such objecting Banks varies by more than five percent (5%) from
      such value thereof as redetermined by the Agent.  In such case, the value
      of the Mineral Interests shall be redetermined based on the average of the
      values calculated by all of the Banks for the Mineral Interests; and
                                  16
<PAGE>
           (d)  The Agent's and, to the extent  applicable, each Bank's
      determination of the value of the Mineral Interests shall be made in good
      faith and in accordance with such party's then applicable and customary
      practices and standards for energy loans of this type.

      3.2  Increase in Borrowing Base.  Unit may, at any time, on behalf of
the Borrowers, submit a written request to the Agent that the Loan Value be
increased to take into account assets acquired or proposed to be acquired by any
of the Borrowers since the then most recent determination of the Loan Value
pursuant to Section 3.1 of this Agreement or this Section 3.2.  Following
receipt of such request and such descriptions, reports and other information
the Banks may reason-ably request with respect to such assets, such assets will
be evaluated and a determination will be made whether to increase the Loan
Value, and if so, by what amount, due to the acquisition or proposed acquisition
of assets by the Borrowers using the method described above in Section 3.1(b).

      An increase in the Loan Value to a sum greater than the Commitment
Amount shall not increase the Line Commitment without the separate and explicit
written approval of all of the Banks nor increase the individual commitment of
any of the Banks without the prior written approval of such Bank.  Borrowers
acknowledge that any increase in the Loan Value as a result of a proposed
acquisition of assets shall not be effective until all of the Banks shall be
reasonably satisfied that the condition of title to and the value of those
assets is consistent with the descriptions, reports and other information
provided by Unit or Borrowers with respect thereto, and Borrowers or Unit have,
by contract or otherwise, obtained the right to acquire such assets.

      3.3  Reduction of the Loan Value Upon Sales of Collateral.  In the event
of a sale, transfer, assignment, lease or other conveyance of any of the
Collateral as permitted under this Agreement, the Loan Value may be reduced by
an amount to be determined by the Agent with the approval of the other Banks in
accordance with their respective customary standards for loans of this type on
account of such sale, transfer, assignment, lease or other conveyance and
Borrowers shall make an immediate payment of the Notes to the extent, if any,
that the outstanding Line Loan advances or the Term Loan, as applicable, plus
the undrawn face amount of all Letters of Credit outstanding exceed such reduced
Loan Value.


                              ARTICLE IV

                               SECURITY

      4.1  Current Collateral.  As security for the Indebtedness including
Notes and the obligations of the Borrowers to reimburse the Banks for drafts
paid under Letters of Credit, Unit Drilling Company hereby grants to the Agent,
as nominee and collateral agent for the Banks, a continuing first priority
security interest in all of the property described in the Security Agreement
from Unit Drilling Company to the Agent and dated as of even date herewith,
except only as otherwise expressly permitted in Section 6.14(v) hereof  (the
"Security Agreement"), and also in: (a) all drilling rigs and related equipment
acquired by Unit Drilling Company after the date hereof and reflected on
financial statements of Unit Drilling Company as fixed assets, together with (b)
all related parts, drill pipe, equipment, tools and supplies, (c) all additions
and accessions thereto and replacements and substitutions thereof, and (d) all
proceeds of any of the foregoing (collectively, all of the foregoing shall be
referred to as the "Current Collateral").

                                  17
<PAGE>
      4.2  Additional Collateral.  Subject to the occurrence of the events
described below in Section 4.2(a) and 4.2(b), Borrowers shall grant to the Agent
as nominee and collateral agent for the Banks a first mortgage lien and/or deed
of trust on and security interest in all of Borrowers' Mineral Interests and
related inventory, intangibles, accounts, equipment, fixtures and personal
property (collectively referred to herein as the "Additional Collateral") to
secure the Indebtedness, by instruments satisfactory to the Agent and the Banks,
as follows:

           (a)  No later than thirty (30) days after the Agent notifies
      Borrowers in writing that the aggregate amount of advances of the Line
      Loan or the Term Loan, as applicable, outstanding at one time, plus the
      aggregate liability of BOK under Letters of Credit outstanding at such
      time, exceeds the Borrowing Base then in effect if, by the last day of
      said thirty (30) day period, Borrowers have not made a payment on the
      aggregate balance of the Notes in an amount equal to such excess, plus the
      unpaid accrued interest on the amount so paid as of the date of such
      payment.

           (b)  No later than thirty (30) days after the Agent notifies
      Borrowers in writing that an Event of Default has occurred, unless the
      circumstances giving rise to such Event of Default have been cured prior
      to the lapse of such thirty (30) days.

      4.3  Rig Appraisals.  In addition to the rig appraisal of the existing
Current Collateral currently being conducted and to be completed and delivered
to the Agent within a reasonable time following the Closing Date, the Agent, on
behalf of the Banks, shall be entitled to request that Borrowers obtain an
updated, current rig appraisal from Harvey Davis or another drilling rig
appraiser acceptable to the Agent not more frequently than once every two (2)
calendar years, commencing calendar year 2000, at Borrowers' sole cost and
expense.  Upon receipt of such written request from the Agent, Borrowers shall
diligently engage such acceptable appraiser and deliver a full and complete copy
of the drilling rig appraisal no later than ninety (90) days after receipt of
the Agent's written request therefor.

                              ARTICLE V

                    CONDITIONS PRECEDENT TO LOANS

      5.1  Conditions Precedent.  The obligation of the Banks to make any
advance under this Agreement or issue any Letters of Credit hereunder and to
convert the same to the Term Loan on the Conversion Date is subject to the
satisfaction of all of the following conditions (in addition to the other terms
and conditions set forth herein):

           (a)  No Default.  There shall exist no Event of Default or Default
      on the Closing Date or the date of such Line Loan advance or Letter of
      Credit issuance or Conversion Date, as applicable.

           (b)  Representations and Warranties.  The representations,
      warranties and covenants set forth in Article VII shall be true and
      correct on and as of the Closing Date with the same effect as though made
      on and as of the Closing Date.

           (c)  Certificates.  Each of the Borrowers shall have delivered to
      the Agent a Certificate, dated as of the Closing Date, and signed by its

                                  18
<PAGE>
      President or Vice President and its Secretary or Assistant Secretary
      certifying (i) to the matters covered by the conditions specified in
      subsections (a) and (b) of this Section 5.1, (ii) that it has performed
      and complied with all agreements and conditions required to be performed
      or complied with by it prior to or on the Closing Date, (iii) to the name
      and signature of each officer autho-rized to execute and deliver the Loan
      Documents and any other documents, certificates or writings and to borrow
      under this Agreement, and (iv) to such other matters in connection
      with this Agreement which the Banks shall reasonably determine to be
      advisable, including without limitation good standing certificates from
      each of the Borrowers from the state of its incorporation and from such
      other states in which qualification as a foreign corporation is required
      by applicable Law (including, insofar as Unit is concerned, Oklahoma, but
      otherwise subject to the provisions of Section 7.1 hereof below).  The
      Banks may conclusively rely on such Certificate until they receive notice
      in writing to the contrary.

           (d)  Proceedings.  On or before the Closing Date, all corporate
      proceedings of each of the Borrowers shall have been taken in connection
      with the transactions contemplated by the Loan Documents and shall be
      satisfactory in form and substance to the Agent and its counsel; and the
      Banks  shall have received certified copies, in form and substance
      satisfactory to the Agent and its counsel, of the Articles or Certificate
      of Incorporation and Bylaws of the Borrowers and the resolutions of the
      Board of Directors of the Borrowers, as adopted, authorizing the execution
      and delivery of the Loan Documents and the borrowings under this
      Agreement.

           (e)  Loan Documents/Security Instruments.  The Borrowers shall have
      delivered to the Agent this Loan Agreement and the Security Agreement,
      each appropriately executed by the appropriate parties and, where
      applicable, acknowledged to the satisfaction of the Banks and dated as of
      the Closing Date, together with such financing statements, transfer
      orders, letters in lieu and other documents as shall be necessary and
      appropriate to perfect the security interests in the Current Collateral
      covered by said Security Instruments.

           (f)  Notes/Prior Loan Agreement.  The Borrowers shall have
      delivered the Notes to the order of the Banks, appropriately executed and
      the outstanding Indebtedness under the Prior Loan Agreement must be paid
      in full (including accrued interest and fees outstanding, as applicable)
      concurrent with the earlier of the initial Line Loan advance requested on
      the Notes or the initial Letter of Credit issuance requested hereunder.

           (g)  Other Information.  The Banks shall have received such other
      information, certificates, resolutions, documents and assurances as shall
      be reasonably requested by the Banks.


                              ARTICLE VI

                              COVENANTS

      The Borrowers covenant and agree with the Banks that from the date
hereof and so long as this Agreement is in effect (by extension, amendment or
otherwise) and until payment in full of all Indebtedness and the performance of
all other obligations of the Borrowers under this Agreement, unless the Banks
shall otherwise consent in writing:
                                  19
<PAGE>
      6.1  Payment of Taxes and Claims.  The Borrowers will pay and discharge
or cause to be paid and discharged all Taxes imposed upon the income or profits
of the Borrowers or upon the property, real, personal or mixed, or upon any part
thereof, belonging to Borrowers before the same shall be in default, and all
lawful claims for labor, rentals, materials and supplies which, if unpaid,
might become a Lien upon its property or any part thereof in excess of $500,000
in the aggregate at any time; provided however, that the Borrowers shall not be
required to pay and discharge or cause to be paid or discharged any such Tax,
assessment or claim so long as the validity thereof shall be contested in good
faith by appropriate proceedings, and adequate book reserves shall be
established with respect thereto, and the Borrowers shall pay such Tax, charge
or claim before any property subject thereto shall become subject to execution.

      6.2  Maintenance of Existence.  Each of the Borrowers will use its best
efforts to preserve and keep in full force and effect its corporate existence,
rights and franchises and will continue to conduct and operate its business
substantially as being conducted and operated presently.  Each of the Borrowers
will become and remain qualified to conduct business in each jurisdiction
where the nature of the business or ownership of property by such Borrowers
may require such qualification.

      6.3  Preservation of Property.  Each of the Borrowers will use its best
efforts at all times to maintain, preserve and protect all of its properties
which are used or useful in the conduct of its respective businesses whether
owned in fee or otherwise, or leased, in good repair and operating condition;
from time to time make, or cause to be made, all needful and proper repairs,
renewals, replacements, betterments and improvements thereto so that the
business carried on in connection therewith may be properly and advantageously
conducted at all times; and comply with all material leases to which it is a
party or under which it occupies property so as to prevent any material loss
or forfeiture thereunder.

      6.4  Insurance.  To the extent possible, each of the Borrowers will keep
or cause to be kept adequately insured by financially sound and reputable
insurers Borrowers' property of a character usually insured by businesses
engaged in the same or similar businesses, including the Collateral.  Upon
demand by the Agent or any of the Banks any insurance policies covering the
Collateral shall be endorsed to provide for payment of losses to the Agent as
its interest may appear, to provide that such policies may not be canceled,
reduced or affected in any manner for any reason without thirty (30) days prior
notice to the Banks.

      6.5  Compliance with Applicable Laws.   Each of the Borrowers will
comply in all material respects with the requirements of all applicable Laws and
orders of any Tribunal and obtain any licenses, permits, franchises or other
governmental authorizations necessary to the ownership of Borrowers' properties
or to the conduct of Borrowers' businesses.

      6.6  Environmental Covenants.  Upon its receipt, each of the Borrowers
will immediately notify the Agent of and provide the Agent with copies of any
notifications of discharges or releases or threatened releases or discharges of
a Polluting Substance on, upon, into or from properties owned by Borrowers which
are given or required to be given by or on behalf of the Borrowers to any
federal, state or local Tribunal if any of the foregoing may materially and
adversely affect Borrowers or any material part of their properties, and such
copies of notifications shall be delivered to the Agent at the same time as they
are delivered to the Tribunal.  Borrowers further agree to promptly undertake

                                  20
<PAGE>
and diligently pursue to completion any appropriate and legally required or
authorized remedial containment and cleanup action in the event of any release
or discharge or threatened release or discharge of a Polluting Substance on,
upon, into or from the Borrowers' Mineral Interests which are under the control
of Borrowers.  To the extent required by applicable law, each of the Borrowers
will maintain and retain complete and accurate records of all releases,
discharges or other disposal of Polluting Substances on, onto, into or from
Borrowers' Mineral Interests which are under the control of Borrowers,
including, without limitation, records of the quantity and type of any
Polluting Substances disposed of on or off such properties.

      6.7  Environmental Indemnities.  Each of the Borrowers hereby agree to
indemnify, defend and hold harmless the Banks and their respective officers,
directors, employees, agents, consultants, attorneys, contractors and their
respective affiliates, successors or assigns, or transferees from and against,
and reimburse said Persons in full with respect to, any and all loss, liability,
damage, fines, penalties, costs and expenses, of every kind and character,
including reasonable attorneys' fees and court costs, known or unknown, fixed or
contingent, occasioned by or associated with any claims, demands, causes of
action, suits and/or enforcement actions, including any administrative or
judicial proceedings, and any remedial, removal or response actions ever
asserted, threatened, instituted or requested by any Persons, including any
Tribunal, arising out of or related to:  (a) the breach of any representation or
warranty of Borrowers contained in Section 7.7 set forth herein; (b) the failure
of Borrowers to perform any of their respective covenants contained in Section
6.5 or 6.6 hereunder; (c) the ownership, construction, occupancy, operation, use
of the Borrowers' properties prior to the earlier of the date on which (i) the
Indebtedness and obligations secured hereby have been paid and performed in full
and the Security Instruments have been released, or (ii) the Borrowers'
properties has been sold by Agent or by the Banks following such parties'
ownership of the Borrowers' properties by way of foreclosure of the Liens
granted pursuant hereto, deed in lieu of such foreclosure or otherwise (the
"Release Date"); provided, however, this indemnity shall not apply with respect
to matters caused by or arising solely from the Agent's or the Banks' activities
during any period of time the Agent or the Banks acquire ownership of the
Borrowers' properties.

      The indemnities contained in this Section 6.7 apply, without limitation,
to any violation on or before the Release Date of any Environmental Laws and any
liability or obligation relating to the environmental conditions on, under or
about the Borrowers' properties on or prior to the Release Date (including,
without limitation:  (a) the presence on, upon or in the Borrowers' properties
or release, discharge or threatened release on, upon or from the Borrowers'
properties of any Polluting Substances generated, used, stored, treated,
disposed of or otherwise released prior to the Release Date, and (b) any and all
damage to real or personal property or natural resources and/or harm or injury
including wrongful death, to persons alleged to have resulted from such release
of any Polluting Substances regardless of whether the act, omission, event or
circumstances constituted a violation of any Environmental Law at the time of
its existence or occurrence).  The term "release" shall have the meaning
specified in CERCLA/SARA and the terms "stored," "treated" and "disposed" shall
have the meanings specified in RCRA/HSWA; provided, however, any broader
meanings of such terms provided by applicable laws of the State of Oklahoma
shall apply.

      The provisions of this Section 6.7 shall be in addition to any other
obligations and liabilities Borrowers may have to the Agent or the Banks at

                                  21
<PAGE>
common law and shall survive the Release Date and shall continue thereafter in
full force and effect.

      The Agent and the Banks agree that in the event that such claim, suit or
enforcement action is asserted or threatened in writing or instituted against
them or any of their officers, employers, agents or contractors or any such
remedial, removal or response action is requested of them or any of their
officers, employees, agents or contractors for which the Agent or the Banks may
desire indemnity or defense hereunder, the Agent or the Banks shall give written
notification thereof to the Borrowers.

      Notwithstanding anything to the contrary stated herein, the indemnities
created by this Section 6.7 shall only apply to losses, liabilities, damages,
fines, penalties, costs and expenses actually incurred by the Agent or the Banks
as a result of claims, demands, actions, suits or proceedings brought by Persons
who are not the beneficiaries of any such indemnity.  The Agent or the Banks
shall act as the exclusive agent for all indemnified Persons under this Section
6.7.  With respect to any claims or demands made by such indemnified Persons,
the Agent shall notify the Borrowers within thirty (30) days after the Agent's
receipt of a writing advising the Agent of such claim or demand.  Such notice
shall identify (i) when such claim or demand was first made, (ii) the identity
of the Person making it, (iii) the indemnified Person and (iv) the substance of
such claim or demand.  Failure by the Agent to so notify the Borrowers within
said thirty (30) day period shall reduce the amount of the Borrowers'
obligations and liabilities under this Section 6.7 by an amount equal to any
damages or losses suffered by the Borrowers resulting from any prejudice caused
the Borrowers by such delay in notification from the Agent.  Upon receipt of
such notice, the Borrowers shall have the exclusive right and obligation to
contest, defend, negotiate or settle any such claim or demand through counsel of
their own selection (but reasonably satisfactory to the Agent and the Banks) and
solely at Borrowers' own cost, risk and expense; provided, that the Agent and
the Banks, at their own cost and expense, shall have the right to participate in
any such contest, defense, negotiations or settlement.  The settlement of any
claim or demand hereunder by the Borrowers, unless such settlement fully
releases the Banks from any and all liability thereon, may be made only upon the
prior approval of the Banks of the terms of the settlement, which approval shall
not be unreasonably withheld.

      6.8  Financial Statements and Reports.  The Borrowers shall deliver the
following to each of the Banks:

           (a)  As soon as available and in any event within forty-five (45)
      days after the end of each of the first three fiscal quarters of each
      fiscal year of Unit,

                (i)  Unaudited balance sheets of Unit and its consolidated
           subsidiaries, prepared on a consolidated basis, as of the end of such
           quarterly period; and

                (ii) Unaudited statements of income of Unit and its consolidated
           subsidiaries, prepared on a consolidated basis, for the portion of
           such fiscal year ended with such quarterly period setting forth in
           detail, in each case, figures derived on a consistent basis and
           presented in comparative form for the corresponding periods of the
           previous fiscal year.



                                  22
<PAGE>
           (b)  As soon as available and in any event within one hundred
      twenty (120) days following the close of each fiscal year of Unit:

                (i)  Audited balance sheets of Unit and its consolidated
           subsidiaries, prepared on a consolidated basis, as of the end of such
           year;

                (ii) Audited statements of income of Unit and its consolidated
           subsidiaries, prepared on a consolidated basis, for the year then
           ended; and

                (iii)     Audited statements of shareholders' equity and cash
           flows of Unit and its consolidated subsidiaries, prepared on a
           consolidated basis, for such year setting forth, in each case,
           figures derived on a consistent basis and presented in comparative
           form for the previous fiscal year.

           (c)  Concurrently with the furnishing of the annual audited
      financial statements pursuant to Section 6.8(b), (i) a separate
      certificate of the independent certified public accountants (such
      certified public accountants must be nationally recognized) who audited
      and prepared such statements, stating that the statements were prepared
      in conformity with GAAP on a consistent basis (except for such standard
      variations as are noted and approved by such independent certified public
      accountants), and fairly present the consolidated financial condition of
      Unit and its consolidated subsidiaries, which certificate shall not be
      qualified or limited because of restricted or limited examination by
      such accountants of any material portion of the records of Unit or any of
      its subsidiaries; and (ii) written computations, signed by the Controller
      or Treasurer of Unit, of the ratios and amounts described in Sections
      6.l7, 6.18(A), 6.20, 6.23, 6.24, 6.25, 6.26 and 6.27 hereof; and five (5)
      copies of the 10-K statement of Unit and its consolidated subsidiaries
      filed with the Securities and Exchange Commission for such fiscal year.

           (d)  Concurrently with the furnishing of the quarterly statements
      pursuant to Section 6.8(a) hereof, there shall be furnished to each of the
      Banks: (a) a certificate signed by the Treasurer or Controller of Unit
      stating to the best of his knowledge after perfor mance of due diligence:
      (i) that the statements were prepared (subject to year-end audit
      adjustments) in conformity with GAAP, applied on a consistent basis
      (except for adjustments with which the independent certified public
      accountants preparing such annual audited financial statements concur);
      (ii) that a review of the activities of each of the Borrowers for the
      period covered by the financial statements has been made under his
      supervision with a view to determining whether each of the Borrowers has
      kept, observed, performed and fulfilled all its obligations under the
      Agreement, the Notes and other Loan Documents to which it is a party; and
      (iii) that each of the Borrowers has kept, observed and fulfilled each and
      every obligation under this Agreement, the Notes and other Loan Documents
      to which it is a party, and is not at that time in default in the
      observance, performance or fulfillment of any such obligations, or if any
      of the Borrowers shall be in default, specifying in said certificate such
      default and the nature, period of existence and status thereof; (b) a
      written report (i) naming the operator and the location (state and
      county) of each drilling rig included in the Collateral as of the end of
      such quarter, and (ii) describing in reasonable detail any material
      disposition or substitution of any of the Collateral; (c) computations of

                                  23
<PAGE>
      the ratios and amounts described in Sections 6.17, 6.18(A), 6.20, 6.23,
      6.24, 6.25, 6.26 and 6.27 hereof and calculation of the drilling
      operations' cash flow as described in Section 3.1(b) hereof; and (d) five
      (5) copies of the 10-Q statement of Unit and its consolidated subsidiaries
      filed with the Securities and Exchange Commission with respect to such
      quarter.

           (e)  As soon as available but in no event later than March 1 of
      each year, Borrowers shall deliver to each of the Banks one copy of a
      report, prepared by Borrowers' in-house engineers, in form and substance
      satisfactory to Agent (and, if requested in writing by the Agent at the
      direction of the Majority Banks), audited by an independent petroleum
      engineer selected by Borrowers and satisfactory to the Majority Banks,
      setting forth the proven oil and gas reserves of Borrowers' Mineral
      Interests, the projection of the rate of production and net operating
      income with respect thereto, as of December 31 of the immediately
      preceding year.  As soon as available, Borrowers shall deliver to each of
      the Banks a copy of a report, prepared by Borrowers' in-house engineers,
      in form and substance satisfactory to Agent and based on the best
      information available to Borrowers at the time, setting forth information
      regarding any over-balancing or under-balancing of natural gas that totals
      50,000 or more mcf per well and a statement as to the aggregate amount of
      over-balancing or under-balancing for all of Borrowers' wells.

      6.9  Notice of Default.  With reasonable promptness after the happening
of any condition or event which constitutes an Event of Default or Default, Unit
will give the Agent a written notice thereof specifying the nature and period of
existence thereof and what actions, if any, the Borrowers are taking and propose
to take with respect thereto.

      6.10 Notice of Litigation.   With reasonable promptness after becoming
aware of the existence of any action, suit or proceeding at law or in equity
before any Tribunal, an adverse outcome in which would (i) materially impair the
ability of any of the Borrowers to carry on their business substantially as now
conducted, (ii) materially and adversely affect the condition (financial
or otherwise) of any of the Borrowers, or (iii) result in monetary damages in
excess of $1,000,000, the Borrowers will give the Agent a written notice
specifying the nature thereof and what actions, if any, the Borrowers are taking
and propose to take with respect thereto.

      6.11 Requested Information.  With reasonable promptness, the Borrowers
will give the Agent or the Banks such other data and information as from time to
time may be reasonably requested by the Agent or any of the Banks.

      6.12 Inspection.  Borrowers will keep complete and accurate books and
records with respect to the Collateral and their other properties, business and
operations and will permit employees and representatives of the Banks, upon
reasonable notice, to audit, inspect and examine all such books and records,
with the exception of the portion thereof covered by an attorney-client
privilege or constituting attorney work product, and to make copies thereof and
extracts therefrom during normal business hours.  Upon any Default or Event of
Default of the Borrowers, they will surrender all of such records relating to
the Collateral to the Agent or the Banks upon receipt of any request
therefor from the Agent or the Banks.

      6.13 Maintenance of Employee Benefit Plans.  The Borrowers will maintain
each employee benefit plan as to which they may have any liability or
responsibility in compliance with ERISA and all other Laws applicable thereto.
                                  24
<PAGE>
      6.14 Limitation on Liens.  Borrowers will not create or suffer to exist
any Lien upon any of their properties or assets  except (i) Liens in favor of
the Agent securing the Indebtedness; (ii) pledges, deposits or Liens not
delinquent under workmen's compensation, unemployment insurance or similar
statutes, mechanics', landlords', workmen's, repairmen's, materialmen's,
carriers' liens and liens of operators of, and participants in, any oil, gas or
mineral properties of any of the Borrowers or other similar liens arising in the
ordinary course of business, or deposits or pledges to obtain the release of any
such Liens so long as such Liens do not include any deposits, advances, borrowed
money or the deferred purchase price of property or services; (iii) Liens for
taxes, assessments, governmental charges or levies, not yet due or delinquent or
which can thereafter be paid without penalty, and statutory liens which do not
and will not materially impair the use of the property of any of the Borrowers
or the value of such property for the purposes of its business unless, as to all
Liens described above for amounts due and owing, such Liens are being contested
in good faith by appropriate proceedings in such a manner as not to permit the
foreclosure of such Liens and Liens, judgments or awards pending appeal, if, as
to all the preceding matters referred to in this Section 6.14(iii), in the
opinion of the Banks adequate reserves are set aside and maintained with respect
thereto; (iv) Liens expressly permitted to exist under the terms of any of the
Security Instruments; (v) the lien against Rig #39 held by Borrowers' seller,
Universal Resources Corporation, in the outstanding amount of  approximately
$800,000 as of the Closing Date (concerning the payment of which obligation
Borrowers are current and not in default); and (vi) consensual liens or security
interests in gas compressor equipment of Borrowers.

      6.15 Disposition/Negative Pledge Regarding Encumbrance of Collateral and
Other Assets.  Borrowers will not sell or encumber any of the Current Collateral
(or any of the Additional Collateral if and to the extent mortgaged or liened
(via deed of trust or otherwise) to the Agent as provided in Section 4.2 of this
Agreement) and Borrowers will not sell, lease, transfer, scrap or otherwise
dispose of or mortgage, pledge, grant a security interest in or otherwise
encumber any of Borrowers' other properties or assets, whether for replacement
or not, unless such sale or disposition shall be in the ordinary course of
business and for a reasonable value and such sale(s) do not exceed $1,000,000 in
the aggregate, without obtaining the prior consent of the Banks.

      6.16 Other Agreements.  Borrowers will not enter into or permit to exist
any agreement (i) which would cause an Event of Default or a Default hereunder;
or (ii) which contains any provision which would be violated or breached by the
performance of Borrowers' obligations hereunder or under any of the other Loan
Documents.

      6.17 Limitation on Other Indebtedness.  Neither the Borrowers nor their
subsidiaries will create, incur, assume, become or be liable in any manner in
respect of, or suffer to exist, any indebtedness whether evidenced by a note,
bond, debenture, agreement, letter of credit or similar or other obligation, or
accept any deposits or advances of any kind, in excess of $7,500,000 in the
aggregate at any time, including the existing item(s) of indebtedness more
particularly described on Schedule I annexed hereto, except (i) plugging bonds,
surface damage bonds, bonds with respect to self insured workers compensation
insurance or bonds, undertakings or contracts and obligations for trade payables
and current indebtedness (other than for borrowed money) incurred in, and
deposits and advances accepted in, the ordinary course of business and which are
not past due or delinquent; (ii) usual and customary insurance premiums financed
in the normal course of business; and (iii) the Indebtedness.


                                  25
<PAGE>
      6.18 Contingent Liabilities; Advances.  Except for (A) guarantees by
Unit of indebtedness of a Person or Persons up to the aggregate amount of
$200,000; (B) guarantees for the repayment of any indebtedness owed by one of
the Borrowers to another one of the Borrowers; (C) the payment of the obligation
of any Borrower to repurchase any property or interests under any partnership
agreement under which any of the Borrowers serves as general partner up to the
aggregate annual amount of $500,000; or (D) Unit's $500,000 payment guarantee
to BOK of the $1,000,000 line of credit of Superior Pipeline Company, L.L.C.,
established with BOK; the Borrowers will not either directly or indirectly, (i)
guarantee, become surety for, discount, endorse, agree (contingently or
otherwise) to purchase, repurchase or otherwise acquire or supply or advance
funds in respect of, or otherwise become or be contingently liable upon the
indebtedness, obligation or liability of any Person, (ii) guarantee the payment
of any dividends or other distributions upon the stock of any corporation, (iii)
discount or sell with recourse or for less than the face value thereof, any of
its notes receivable, accounts receivable or chattel paper; (iv) loan, agree to
loan, or advance money to any Person; or (v) enter into any agreement for the
purchase or other acquisition of any goods, products, materials or supplies, or
for the making of any shipments or for the payment of services, if in any such
case payment therefor is to be made regardless of the non-delivery of such
goods, products, materials or supplies or the non-furnishing of the
transportation of services; provided, however that the foregoing shall not be
applicable to endorsement of negotiable instruments presented to or deposited
with a bank for collection or deposit in the ordinary course of business.

      6.19 Merger, Consolidation, Acquisition.  None of the Borrowers will
merge or consolidate with or into any other Person or permit any other Person to
consolidate with or merge into any of the Borrowers;  or adopt or effect any
plan of reorganization, recapitalization, liquidation or dissolution;  provided,
however, Borrowers may merge into or with each other and/or (subject to the
execution and delivery of such supplemental or additional Security Instruments
deemed appropriate to continue the Banks' security interest in the Collateral)
may enter into letter(s) of intent pertaining to merger, consolidation or
acquisition subject to obtaining the Banks' written consent thereto prior to
consummation of the transactions contemplated by such letter(s) of intent.

      6.20 Dividends.  The Borrowers will not permit Unit to pay dividends
(other than stock dividends) on or make any other distribution on account of any
class of its capital stock or purchase or retire any class of its capital stock,
unless such purchase or retirement is made by substituting another class of
capital stock, whether now or hereafter existing, except cash dividends of not
more than twenty-five percent (25%) of Unit's consolidated after-tax profits, as
reflected in the financial statements furnished to the Agent pursuant to this
Agreement for Unit's immediately preceding fiscal year, and only if Working
Capital Provided from Operations during said year is equal to or greater than
175% of Current Maturities of Long Term Debt at the end of such year.

      6.21 Articles of Incorporation and By-Laws.  The Borrowers will not
amend, alter, modify or restate their Articles or Certificates of Incorporation
or By-Laws in any way which would in any manner adversely affect the Borrowers'
obligations or covenants to the Banks hereunder.

      6.22 Assumed Names/Additional Subsidiaries.  The Borrowers promptly
shall advise the Agent if any of the Borrowers amend, alter, modify or restate
their Articles or Certificates of Incorporation or Bylaws in any way which would
change the corporate name or adopt a trade name for any of the Borrowers.  The
Borrowers may create such additional wholly-owned subsidiaries as may be needed

                                  26
<PAGE>
to conduct their operations, including Borrowers' proposed South American
operations, provided that the Agent is promptly supplied with full and complete
copies of the filed organizational documents pertaining thereto and, to the
extent deemed necessary by the Agent, the newly created wholly-owned
subsidiaries promptly execute supplemental or amended Security Instruments and
such other loan documents reasonably deemed necessary by Banks to protect the
Banks' security interests in the Collateral and the continuing priorities
thereof.

      6.23 Consolidated Working Capital Ratio (Current Ratio).  The Borrowers
will not permit the Consolidated Working Capital Ratio (i.e., Current Ratio) to
be less than 1.0 to 1.0 on any quarterly or annual reporting date.

      6.24 Minimum Tangible Net Worth.  The Borrowers will not permit the
Consolidated Tangible Net Worth to be less than Seventy-five Million Dollars
($75,000,000).

      6.25 Minimum Cash Flow.  The Borrowers will not permit Working Capital
Provided from Operations during the twelve (12) preceding month period to be
less than Eighteen Million Dollars ($18,000,000), tested quarterly as of the
close of each fiscal quarter of Unit for the most recent four (4) quarter
rolling average.

      6.26 Long Term Debt to Consolidated Tangible Net Worth Ratio.  The
Borrowers will not permit the ratio of the Long Term Debt to Consolidated
Tangible Net Worth to exceed 1.2 to 1.0 on any quarterly or annual reporting
date.

      6.27 Total Liabilities to Consolidated Tangible Net Worth Ratio.  The
Borrowers will not permit the ratio of Total Liabilities to Consolidated
Tangible Net Worth to exceed 1.65 to 1.0 on any quarterly or annual reporting
date.

                             ARTICLE VII

                    REPRESENTATIONS AND WARRANTIES

      To induce the Banks to enter into this Agreement and to make Line Loan
advances hereunder from time to time and to establish the Term Loan to the
Borrowers under the provisions hereof, and in consideration thereof, the
Borrowers represent, warrant and covenant as follows:

      7.1  Organization and Qualification.  Each of the Borrowers is duly
organized, validly existing, and in good standing under the Laws of its
respective jurisdiction of incorporation, and is duly licensed and in good
standing as a foreign corporation in each jurisdiction in which the nature
of the business transacted or the property owned is such as to require
licensing or qualification as such, except where failure to be licensed or in
good standing would not have a material adverse affect on any of the Borrowers.

      7.2  Litigation.  There is no action, suit, investigation or proceeding
threatened or pending before any Tribunal against or affecting any of the
Borrowers or any properties or rights of the Borrowers, which, if adversely
determined, would result in a liability of greater than $1,000,000 or would
otherwise result in any material adverse change in the business or condition,
financial or otherwise, of Borrowers that is not otherwise covered by adequate
insurance.  None of the Borrowers is in default with respect to any judgment,
order, writ, injunction, decree, rule or regulation of any Tribunal.
                                  27
<PAGE>
      7.3  Conflicting Agreements and Other Matters.  None of the Borrowers is
in default in any material respect in the performance of any obligation,
covenant, or condition in any agreement to which it is a party or by which it is
bound.  None of the Borrowers is a party to any contract or agreement or subject
to any charter or other restriction which materially and adversely affects its
business, property or assets, or financial condition, other than permitted
under this Agreement.  None of the Borrowers is a party to or otherwise subject
to any contract or agreement which restricts or otherwise affects the right or
ability of the Borrowers to execute the Loan Documents or the performance of any
of their respective terms.  Neither the execution nor delivery of any of the
Loan Documents nor fulfillment of nor compliance with their respective terms and
provisions will conflict with, or result in a breach of the terms, conditions or
provisions of, or constitute a default under, or result in any violation of, or
result in the creation of any Lien (except those created by the Loan Documents)
upon any of the properties or assets of the Borrowers pursuant to, or require
any consent, approval or other action by or any notice to or filing with any
Tribunal (other than routine filings after the Closing Date with the Securities
and Exchange Commission, any securities exchange and/or state blue sky
authorities) pursuant to the Charter or By-Laws of any of the Borrowers, any
award of any arbitrator, or any agreement, instrument or Law to which any of
the Borrowers is subject.

      7.4  Financial Statements.  The Borrowers' most recent unaudited
financial statements which have been furnished to the Banks have been prepared
in conformity with GAAP, show all material liabilities, direct and contingent,
and fairly present the financial condition of the Borrowers and the results of
their operations for the periods then ended, and since such date there has been
no material adverse change in the business, financial condition or operations of
the Borrowers.

      7.5  Corporate Authorization.  The Boards of Directors of the Borrowers
have duly authorized the execution and delivery of each of the Loan Documents
and the performance of their respective terms.  No other consent of any other
Person, except for the Banks, is required as a prerequisite to the validity and
enforceability of the Loan Documents.

      7.6  Title to Properties; Authority.  Each of the Borrowers has full
power, authority and legal right to own and operate the properties which it now
owns and operates, and to carry on the lines of business in which it is now
engaged, and Unit Drilling Company has good and marketable title to the Current
Collateral and the applicable Borrowers who own the Additional Collateral have
good and marketable title thereto subject to no Lien of any kind except Liens
permitted by this Agreement.  Borrowers have full power, authority and legal
right to execute and deliver and to perform and observe the provisions of this
Agreement and the other Loan Documents.

      7.7  Environmental Representations.  To the best of Borrowers' knowledge:

           (a)  None of the Borrowers is subject to any liability or obligation
      relating to (i) the environmental conditions on, under or about their
      properties, including, without limitation, the soil and ground water
      conditions at the location of any of the Borrowers' properties, or (ii)
      the use, management, handling, transport, treatment, generation, storage,
      disposal, release or discharge of any Polluting Substance that would or
      may reasonably be expected to result in a liability in the amount of
      $1,000,000 or more;


                                  28
<PAGE>
           (b)  The Borrowers have been issued and are in compliance with all
      material permits, licenses or similar authorizations to construct, occupy,
      operate or use any buildings, improvements, facilities, fixtures and
      equipment forming a part of their properties by reason of any
      Environmental Laws;

           (c)  Each of the Borrowers has taken all steps necessary to determine
      and has determined that no Polluting Substances have been disposed of or
      otherwise released on, onto, into, or from their operated Mineral
      Interests (the term "release" shall have the meanings specified in
      CERCLA/SARA, and the term "disposal" or "disposed" shall have the meanings
      specified in RCRA/HSWA) which singly has, or in the aggregate have
      resulted in, or may reasonably be expected to result in a liability in
      the amount of $1,000,000 or more; provided, in the event either
      CERCLA/SARA or RCRA/HSWA is amended so as to broaden the meaning of any
      term defined thereby, such broader meaning shall apply subsequent to the
      effective date of such amendment and provided further, to the extent that
      the laws of any State or Tribunal establish a meaning for "release,"
      "disposal" or "disposed" which is broader than that specified in
      CERCLA/SARA, RCRA/HSWA or other Environmental Laws, such broader meaning
      shall apply);

           (d)  There are no PCB's or asbestos-containing materials, whether
      in the nature of thermal insulation products such as pipe boiler or breech
      coverings, wraps or blankets or sprayed-on or troweled-on products in, on
      or upon the properties owned by Borrowers; and

           (e)  There is no urea formaldehyde foam insulation ("UFFI") in, on
      or upon the properties owned by Borrowers.

      7.8  Purposes.  None of the Borrowers is engaged principally, or as one
of its important activities, in the business of extending credit for the purpose
of purchasing or carrying margin stock (within the meaning of Regulation U of
the Board of Governors of the Federal Reserve System) and no part of the
proceeds of any borrowing hereunder will be used to purchase or carry any margin
stock or to extend credit to others for the purpose of purchasing or carrying
any margin stock.  If requested by the Agent or any of the Banks, the Borrowers
will furnish to the Agent or such Bank a statement in conformity with the
requirements of Federal Reserve Form U-1, referred to in Regulation U, to the
foregoing effect.  None of the Borrowers nor any agent acting on their behalf
has taken or will take any action which might cause this Agreement or the
Notes to violate any regulation of the Board of Governors of the Federal Reserve
System (including Regulations G, T, U and X) or to violate any Securities Laws,
state or federal, in each case as in effect now or as the same may hereafter be
in effect.

      7.9  Compliance with Applicable Laws.  Each of the Borrowers is in
compliance in all material respects with all Laws, ordinances, rules,
regulations and other legal requirements applicable to it and the business
conducted thereby, the violation of which could or would have a material adverse
effect on its business condition, financial or otherwise.

      7.10 Possession of Franchises, Licenses.  Each of the Borrowers
possesses all franchises, certificates, licenses, permits and other
authorizations from governmental political subdivisions or regulatory
authorities, free from burdensome restrictions, that are necessary
in any material respect for the ownership, maintenance and operation of its

                                  29
<PAGE>
properties and assets, and none of the Borrowers is in violation of any thereof
in any material respect.

      7.11 Leases, Easements and Rights of Way.  Each of the Borrowers enjoys
peaceful and undisturbed possession of all leases, easements and rights of way
necessary in any material respect for the operation of its respective properties
and assets.  All such leases, easements and rights of way are valid and
subsisting and are in full force and effect.

      7.12 Taxes.  Borrowers have filed all Federal, state and other income
tax returns which are required to be filed and have paid all Taxes, as shown on
said returns, and all Taxes due or payable without returns and all assessments
received to the extent that such Taxes or assessments have become due.  All Tax
liabilities of the Borrowers are adequately provided for on the books of
the Borrowers, including any interest or penalties.  No income tax liability
of a material nature has been asserted by taxing authorities for Taxes in excess
of those already paid.

      7.13 Disclosure.  Neither this Agreement nor any other Loan Document or
writing furnished to the Agent or the Banks by or on behalf of the Borrowers in
connection herewith contains any untrue statement of a material fact nor do such
Loan Documents and writings, taken as a whole, omit to state a material fact
necessary in order to make the statements contained herein and therein not
misleading.  There is no fact known to Borrowers and not reflected in the
financial statements provided to the Banks which materially adversely affects
their assets or in the future may materially adversely affect the business,
properties, assets or financial condition of Borrowers which has not been set
forth in this Agreement, in the Loan Documents or in other documents furnished
to the Banks by or on behalf of the Borrowers prior to the date hereof in
connection with the transactions contemplated hereby.

      7.14 Investment Company Act Representation.  None of the Borrowers is an
"investment company" or a company "controlled" by an "investment company",
within the meaning of the Investment Company Act of 1940, as amended.

      7.15 ERISA.  Since the effective date of Title IV of ERISA, no
Reportable Event has occurred with respect to any Plan.  For the purposes of
this section the term "Reportable Event" shall mean an event described in
Section 4043(b) of ERISA.  For the purposes hereof the term "Plan" shall
mean any plan subject to Title IV of ERISA and maintained for employees of the
Borrowers, or of any member of a controlled group of corporations, as the term
"controlled group of corporations" is defined in Section 1563 of the Internal
Revenue Code of 1986, as amended (the "Code"), of which any of the Borrowers is
a part.  Each Plan established or maintained by any of the Borrowers is in
material compliance with the applicable provisions of ERISA, and the Borrowers
have filed all reports required by ERISA and the Code to be filed with respect
to each Plan.  The Borrowers have met all requirements with respect to funding
Plans imposed by ERISA or the Code.  Since the effective date of Title IV of
ERISA there have not been any nor are there now existing any events or
conditions that would permit any Plan to be terminated under circumstances which
would cause the lien provided under Section 4068 of ERISA to attach to the
assets of the Borrowers.  The value of each Plan's benefits guaranteed under
Title IV of ERISA on the date hereof does not exceed the value of such Plan's
assets allocable to such benefits on the date hereof.

      7.16 Fiscal Year.  The fiscal years of the respective Borrowers end as
of December 31 of each year.

                                  30
<PAGE>
                             ARTICLE VIII

                          EVENTS OF DEFAULT

      8.1  Events of Default.  The occurrence of any one or more of the
following events shall constitute an Event of Default (whether such occurrence
shall be voluntary or involuntary or come about or be effected by operation of
Law or otherwise):

           (a)  The Borrowers shall fail to make any payment due on any of the
      Notes within ten (10) Business Days after the same shall become due and
      payable (whether by extension, renewal, acceleration, maturity or
      otherwise) or the Borrowers shall fail to pay any other sums due to the
      Banks hereunder within ten (10) Business Days after the same shall become
      due and payable; or

           (b)  Any representation or warranty of the Borrowers made herein or
      in any writing furnished in connection with or pursuant to any of the Loan
      Documents shall have been false or misleading in any material respect on
      the date when made; or

           (c)  Any of the Borrowers shall fail to duly observe, perform or
      comply with any covenant, agreement or term (other than payment provisions
      which are governed by Section 8.1(a) hereof) contained in this Agreement
      or any of the Loan Documents and such default or breach shall have not
      been cured or remedied within the earlier of thirty (30) days after
      any of the Borrowers shall know (or should have known) of its occurrence
      or thirty (30) days following receipt of notice thereof from the Bank; or

           (d)  Any of the Borrowers shall default in the payment of principal
      or of interest on any other obligation for money borrowed or received as
      an advance (or any obligation under any conditional sale or other title
      retention agreement, or any obligation issued or assumed as full or
      partial payment for property whether or not secured by purchase money
      Lien, or any obligation under notes payable or drafts accepted
      representing extensions of credit) beyond any grace period provided with
      respect thereto, or shall default in the performance of any other
      agreement, term or condition contained in any agreement under which
      such obligation is created (or if any other default under any such
      agreement shall occur and be continuing beyond any period of grace
      provided with respect thereto) if the effect of such default is to cause,
      or to permit the holder or holders of such obligation (or a trustee
      on behalf of such holder or holders) to cause such obligation to become
      due prior to its date of maturity; or

           (e)  Any of the following:  (i) any of the Borrowers shall become
      insolvent or unable to pay its debts as they mature, make an assignment
      for the benefit of creditors or admit in writing its inability to pay its
      debts generally as they become due or fail generally to pay its debts as
      they mature; or (ii) an order, judgment or decree is entered adjudicating
      any of the Borrowers insolvent or an order for relief under the United
      States Bankruptcy Court is entered with respect to any of the Borrowers
      within sixty (60) days of the date of its entry; or (iii) any of the
      Borrowers shall petition or apply to any Tribunal for the appointment of a
      trustee, receiver, custodian or liquidator of any of the Borrowers or of
      any substantial part of the assets of any of the Borrowers, or shall
      commence any proceedings relating to any of the Borrowers under any

                                  31
<PAGE>
      bankruptcy, reorganization, compromise, arrangement, insolvency,
      readjustment of debts, dissolution, or liquidation Law of any
      jurisdiction, whether now or hereafter in effect; or (iv) any such
      petition or application shall be filed, or any such proceedings shall be
      commenced, of a type described in subsection (iii) above, against any of
      the Borrowers and any of the Borrowers by any act shall indicate its
      approval thereof, consent thereto or acquiescence therein, or an order,
      judgment or decree shall be entered appointing any such trustee, receiver,
      custodian or liquidator, or approving the petition in any such
      proceedings, and such order, judgment or decree shall remain unstayed and
      in effect, if being vigorously contested, for more than sixty (60) days;
      or (v) any order, judgment or decree shall be entered in any proceedings
      against any of the Borrowers decreeing the dissolution of any of the
      Borrowers and such order, judgment or decree shall remain unstayed and in
      effect for more than thirty (30) days; or (vi) any final order, judgment
      or decree shall be entered in any proceedings against any of the Borrowers
      decreeing a split-up of any of the Borrowers which requires the
      divestiture of a substantial part of the assets of any of the Borrowers,
      and such order, judgment or decree shall remain unstayed and in effect for
      more than sixty (60) days; or (vii) any of the Borrowers  shall fail
      to make timely payment or deposit of any amount of tax required to be
      withheld by any of the Borrowers and paid to or deposited to or to the
      credit of the United States of America pursuant to the provisions of the
      Internal Revenue Code of 1986, as amended, in respect of any and all wages
      and salaries paid to employees of the Borrowers; or

           (f)  Any final judgment on the merits for the payment of money in
      an amount in excess of $500,000 shall be outstanding against any of the
      Borrowers and such judgment shall remain unstayed and in effect and unpaid
      for more than thirty (30) days; or

           (g)  Any Reportable Event described in Section 7.15 hereof which
      the Banks determine in good faith might constitute grounds for the
      termination of a Plan therein described or for the appointment by the
      appropriate United States District Court of a trustee to administer any
      such Plan shall have occurred and be continuing thirty (30) days after
      written notice to such effect shall have been given to any of the
      Borrowers by the Agent or the Banks, or any such Plan shall be terminated,
      or a trustee shall be appointed by a United States District Court to
      administer any such Plan or the Pension Benefit Guaranty Corporation shall
      institute proceedings to terminate any such Plan or to appoint a trustee
      to administer any such Plan; or

           (h)  Any default or event of default occurs and is continuing
      beyond any cure period with respect thereto under any of the other Loan
      Documents.

      8.2  Remedies.  Upon the occurrence of any Event of Default referred to
in Section 8.1(e), the Line Commitment (to the extent on or prior to the
Conversion Date shall immediately and automatically terminate and the Notes
(whether before or after the Conversion Date) and all other Indebtedness shall
be immediately due and payable, without notice of any kind.  Upon the occur-
rence of any other Event of Default, and without prejudice to any right or
remedy of the Banks under this Agreement or the Loan Documents or under
applicable Law or under any other instrument or document delivered in connection
herewith, the Agent or the Majority Banks may (i) declare the Commitments
terminated or (ii) declare both of the Commitments terminated and declare the

                                  32
<PAGE>
Notes and the other Indebtedness, or any part thereof, to be forthwith due and
payable, whereupon the Notes and the other Indebtedness, or such portion as is
designated by the Banks shall forthwith become due and payable, without
presentment, demand, notice or protest of any kind, all of which are hereby
expressly waived by the Borrowers.  No delay or omission on the part of the
Agent or the Banks in exercising any power or right hereunder or under the
Notes, the Loan Documents or under applicable law shall impair such right or
power or be construed to be a waiver of any default or any acquiescence therein,
nor shall any single or partial exercise by the Agent or the Banks of any such
power or right preclude other or further exercise thereof or the exercise of
any other such power or right by the Agent or the Banks in accordance with
applicable Laws.  In the event that all or part of the Indebtedness becomes or
is declared to be forthwith due and payable as herein provided, the Banks shall
have the right to set off the amount of all the Indebtedness of the Borrowers
owing to the Banks against, and shall have a lien upon and security interest in,
all property of the Borrowers in the Banks' possession at or subsequent to such
default, regardless of the capacity in which the Banks possess such property,
including but not limited to any balance or share of any deposit, demand,
collection or agency account, subject to Section 9.3 hereof.  At any time after
the occurrence of any Event of Default, the Banks may, at their option, cause an
audit of any and/or all of the books, records and documents of the Borrowers,
with the exception of the portion thereof covered by an attorney-client
privilege or constituting attorney work product, to be made by auditors
satisfactory to the Banks.  The Banks also shall have, and may exercise, each
and every right and remedy granted to them for default under the terms of the
other Loan Documents in accordance with applicable Laws.


                              ARTICLE IX

                            MISCELLANEOUS

      9.1  Notices.  Unless otherwise provided herein, all notices, requests,
consents and demands shall be in writing and shall be either hand-delivered (by
courier or otherwise), sent by fax or telecopy to the respective fax or telecopy
number specified below or mailed by certified mail, postage prepaid, to the
respective addresses specified below, or, as to any party, to such other address
as may be designated by it in written notice to the other parties:

      If to the Borrowers, to:

           1000 Kensington Tower 1
           7130 South Lewis
           Tulsa, Oklahoma 74172
           Attention:  Chief Financial Officer
           FAX NO: (918) 493-7711

      If to BOK, to:

           Bank of Oklahoma, National Association
           P. O. Box 2300
           101 East Second Street
           Tulsa, Oklahoma 74192
           Attention:  Energy Department
           FAX NO: (918) 588-6880



                                  33
<PAGE>
      If to Nations, to:

           Nations, N.A.
           P. O. Box 2360
           515 South Boulder
           Tulsa, Oklahoma 74101-2360
           Attention:  Energy Department
           FAX NO: (918) 591-8487

      If to BankBoston, N. A. to:

           BankBoston, N.A.
           P.O. Box 2016
           100 Federal Street
           Energy & Utility Division 01-08-02
           Boston, Massachusetts  02110
           Attention: Ms. Allison Rossi
           FAX NO: (617) 434-3652

      If to Local Federal, to:

           Local Federal Bank, FSB
           2250 East 73rd
           Suite 625
           Tulsa, Oklahoma  74136
           Attention: Mr. James N. Young, Jr.
                      Executive Vice-President
           FAX NO: (918) 495-1284

      If to the Agent, to:

           Bank of Oklahoma, National Association
           P. O. Box 2300
           101 East Second Street
           Tulsa, Oklahoma 74192
           Attention:  Energy Department
           FAX NO: (918) 588-6880

All notices, requests, consents and demands hereunder will be effective when
hand-delivered to the applicable notice addresses of any party hereto or when
sent by fax or telecopy to the applicable fax or telecopy numbers of any party
hereto or when mailed by certified mail, postage prepaid, addressed as aforesaid
by any party hereto.

      9.2  Place of Payment.  All sums payable hereunder shall be paid in
immediately available funds to the Agent, at its principal banking offices at
Bank of Oklahoma Tower, 101 East Second Street, One Williams Center in Tulsa,
Oklahoma, or at such other place as the Agent shall notify the Borrowers in
writing.  If any interest, principal or other payment falls due on a date other
than a Business Day, then (unless otherwise provided herein) such due date
shall be extended to the next succeeding Business Day, and such extension of
time will in such case be included in computing interest, if any, in connection
with such payment.

      9.3  Setoff.  Any indebtedness owing from any of the Banks to any of the
Borrowers, including, without limitation, any general or special deposit account
(excluding, however, the following accounts at BOK; Account Nos. 1-01174868, 1-

                                  34
<PAGE>
026-5743-7, 1-035-7018-4, 1-038-4862-7, 1-038-4077-3, 2-079-1154-3, 2-079-2793-
3, 2-079-2310-4, 2-079-2864-8, 2-079-3738-2, 2-083-0274-7, 2-083-0798-3, 2-083-
1249-3 and 2-083-1818-0), may be set off or otherwise applied by the Banks under
a general lien and security interest covering such indebtedness which is hereby
granted on any indebtedness or liability of Borrowers under any Loan Document to
the Banks, at any time and from and after the occurrence of an Event of Default,
either before or after Maturity, and without demand or notice to anyone.  It is
understood that if any one or more of the Banks sell sub-participations in the
Notes to an affiliate of such Bank that any such sub-participant shall have the
right of setoff or other application under the general lien as herein granted
to the Banks.

      9.4  Survival of Agreements.  All covenants, agreements, representations
and warranties made herein shall survive the execution and the delivery of Loan
Documents.  All statements contained in any certificate or other instrument
executed and delivered by the Borrowers hereunder shall be deemed to constitute
representations and warranties by the Borrowers.

      9.5  Parties in Interest.  All covenants, agreements and obligations
contained in this Agreement shall bind and inure to the benefit of the
respective successors and assigns of the parties hereto, except that the
Borrowers may not assign their rights or obligations hereunder without the
prior written consent of the Banks.  Each of the Banks may sell participations
in its interest hereunder and under its Note without the prior written consent
of Unit (for and on behalf of all of the Borrowers) but only if and to the
extent such Bank retains all of its voting rights under the Intercreditor
Agreement or and further that the Banks may sell, assign or transfer such
interests with such prior consent of Unit (which consent Unit will not
unreasonably withhold), provided that no such consent shall be required in the
case of a sale, transfer or assignment to any affiliate of any of the Banks.
Notwithstanding anything to the contrary provided herein, each Bank may, at any
time, without the consent of the Borrowers, assign all or any portion of its
rights under this Agreement and its Note to a Federal Reserve Bank, provided
that no such assignment shall release any Bank from its obligations hereunder.

      9.6  Governing Law.  This Agreement, the Notes and the Security
Instruments shall be deemed to have been made or incurred under the Laws of the
State of Oklahoma and shall be construed and enforced in accordance with and
governed by the Laws of Oklahoma.

      9.7  SUBMISSION TO JURISDICTION.  THE PARTIES HEREBY CONSENT
TO THE JURISDICTION OF ANY OF THE STATE AND FEDERAL COURTS LOCATED
WITHIN TULSA COUNTY, OKLAHOMA AND WAIVE ANY OBJECTION WHICH
PARTIES MAY HAVE BASED ON IMPROPER VENUE OR FORUM NON CONVENIENT
TO THE CONDUCT OF ANY PROCEEDING IN ANY SUCH COURT.

      9.8  Maximum Interest Rate.  Regardless of any provision herein, the
Agent and the Banks shall never be entitled to receive, collect or apply, as
interest on the Indebtedness any amount in excess of the maximum rate of
interest permitted to be charged by the Banks by applicable Law, and, in the
event the Agent or the Banks shall ever receive, collect or apply, as interest,
any such excess, such amount which would be excessive interest shall be applied
to other Indebtedness and then to the reduction of principal; and, if the other
Indebtedness and principal are paid in full, then any remaining excess shall
forthwith be paid to the Borrowers.



                                  35
<PAGE>
      9.9  No Waiver; Cumulative Remedies.  No failure to exercise, and no
delay in exercising, on the part of the Agent or any of the Banks, any right,
power or privilege hereunder or under any other Loan Document or applicable Law
shall preclude any other or further exercise thereof or the exercise of any
other right, power or privilege of the Agent or any of the Banks.  The rights
and remedies herein provided are cumulative and not exclusive of any other
rights or remedies provided by any other instrument or by law.  No amendment,
modification or waiver of any provision of this Agreement or any other Loan
Document shall be effective unless the same shall be in writing and signed by
the Agent and the Banks.  No notice to or demand on the Borrowers in any
case shall entitle the Borrowers to any other or further notice or demand in
similar or other circumstances.

      9.10 Costs.  The Borrowers agree to pay to the Agent for the benefit of
the Banks on demand all recording fees and filing costs and all reasonable
attorneys fees and legal expenses incurred or accrued by the Banks in connection
with the preparation, negotiation, closing, administration of the Loan Documents
and the filing and recording of the Security Instruments or any amendment,
waiver, consent or modification to and of the Loan Documents.  In any action to
enforce or construe the provisions of this Agreement or any of the Loan
Documents, the prevailing party shall be entitled to recover its reasonable
attorneys' fees and all costs and expenses related thereto.

      9.11 Change of Agent.  Upon receipt of notice of the name and address of
a new Agent, duly executed by the Banks, the Borrowers shall thereafter direct
to the new Agent all reports, payments and other information required to be
delivered to the Agent pursuant to the terms of this Agreement and all other
Loan Documents.

      9.12 Headings.  The article and section headings of this Agreement are
for convenience of reference only and shall not constitute a part of the text
hereof nor alter or otherwise affect the meaning hereof.

      9.13 Severability.  The unenforceability or invalidity as determined by
a Tribunal of competent jurisdiction, of any provision or provisions of this
Agreement shall not render unenforceable or invalid any other provision or
provisions hereof.

      9.14 Counterparts and Execution.  This Agreement may be executed in any
number of counterparts, all of which taken together shall constitute one and the
same instrument.  Notwith standing the single execution of this Agreement by the
President of each of the Borrowers, each of the Borrowers is jointly and
severally bound by the terms of this Agreement.

      9.15 WAIVER OF JURY TRIAL.  BORROWERS, BANKS AND AGENTS
FULLY, VOLUNTARILY AND EXPRESSLY WAIVE ANY RIGHT TO A TRIAL BY
JURY IN ANY ACTION OR PROCEEDING TO ENFORCE OR DEFEND ANY RIGHTS
UNDER THIS AGREEMENT OR UNDER ANY AMENDMENT, INSTRUMENT,
DOCUMENT OR AGREEMENT DELIVERED (OR WHICH MAY IN THE FUTURE BE
DELIVERED) IN CONNECTION HEREWITH OR ARISING FROM ANY BANKING
RELATIONSHIP EXISTING IN CONNECTION WITH THIS AGREEMENT, THE NOTES
AND/OR THE SECURITY INSTRUMENTS.  BORROWERS, BANKS AND AGENT
AGREE THAT ANY SUCH ACTION OR PROCEEDING SHALL BE TRIED BEFORE A
COURT AND NOT BEFORE A JURY.




                                  36
<PAGE>
      IN WITNESS WHEREOF, the Borrowers have caused this Agreement to be
executed and delivered to the Banks in Tulsa, Oklahoma as of the day and year
first above written by the undersigned duly authorized corporate officer of each
thereof.

                              "Borrowers"

                              UNIT CORPORATION, a Delaware corporation
                              UNIT DRILLING AND EXPLORATION
                               COMPANY, a Delaware corporation
                              MOUNTAIN FRONT PIPELINE COMPANY,
                               INC., an Oklahoma corporation
                              UNIT PETROLEUM COMPANY, an Oklahoma
                               corporation
                              UNIT DRILLING COMPANY, an Oklahoma
                               corporation
                              PETROLEUM SUPPLY COMPANY, an Oklahoma
                               corporation, and
                              UNIT ENERGY CANADA INC., an Oklahoma
                               corporation


                              By___________________________________
                                John G. Nikkel, President of UNIT
                                CORPORATION, UNIT DRILLING AND
                                EXPLORATION COMPANY, MOUNTAIN FRONT
                                PIPELINE COMPANY, INC., UNIT PETROLEUM
                                COMPANY, UNIT DRILLING COMPANY,
                                PETROLEUM SUPPLY COMPANY AND UNIT
                                ENERGY CANADA INC.


                              "Agent"

                              BANK OF OKLAHOMA, NATIONAL
                               ASSOCIATION


                              By __________________________________
                                   Pam Schloeder, Vice President

                              P. O. Box 2300
                              Tulsa, Oklahoma 74192















                                  37
<PAGE>
                              "Banks"


                              BANK OF OKLAHOMA, NATIONAL
                               ASSOCIATION


                              By __________________________________
                                 Pam Schloeder, Vice President

                              P. O. Box 2300
                              Tulsa, Oklahoma  74192














































                                  38
<PAGE>
                              BANKBOSTON, N.A.


                              By __________________________________
                                 Allison Rossi, _______________(Title)

                              P.O. Box 2016
                              100 Federal Street
                              Energy & Utility Division 01-08-02
                              Boston, Massachusetts  02110
















































                                  39
<PAGE>
                              NATIONSBANK, N.A.


                              By __________________________________
                                 Glenn A. Elrod
                                 Senior Vice President

                              P. O. Box 2360
                              Tulsa, Oklahoma  74101-2360

















































                                  40
<PAGE>
                              LOCAL FEDERAL BANK, FSB



                              By __________________________________

                                  James N. Young, Jr.
                                  Executive Vice President


                              2250 East 73rd, Suite 625
                              Tulsa, Oklahoma 74136














































                                  41
<PAGE>
                            EXHIBIT "A-1"

                           PROMISSORY NOTE


$30,000,000                                             April 30, 1998
                                                       Tulsa, Oklahoma

     FOR VALUE RECEIVED, the undersigned, UNIT CORPORATION, a Delaware
corporation, UNIT DRILLING AND EXPLORATION COMPANY, a Delaware corporation,
MOUNTAIN FRONT PIPELINE COMPANY, INC., an Oklahoma corporation, UNIT DRILLING
COMPANY, an Oklahoma corporation, UNIT PETROLEUM COMPANY (formerly Sunshine
Development Corporation), an Oklahoma corporation, PETROLEUM SUPPLY COMPANY, an
Oklahoma corporation, and UNIT ENERGY CANADA INC., an Alberta, Canada
corporation (individually and collectively the "Borrowers"), jointly and
severally promise to pay to the order of BANK OF OKLAHOMA, NATIONAL ASSOCIATION
("BOK"), with interest, the principal sum of THIRTY MILLION and no/100ths
DOLLARS ($30,000,000) or, if less, the aggregate principal amount of all
advances made by BOK to Borrowers pursuant to the Loan Agreement dated as of
even date herewith among Borrowers, BOK, NationsBank, N.A. ("Nations"),
BankBoston, N.A. ("BankBoston") and Local Federal Bank, FSB ("Local Federal")
(collectively the "Banks"), with BOK as Agent, (the Loan Agreement, as hereafter
amended from time to time referred to as the "Loan Agreement"), which are
outstanding from time to time hereunder and, unless otherwise provided in the
Loan Agreement, the principal balance of this Note outstanding on May 1, 2002,
(the "Conversion Date") shall be payable in thirty-six (36) consecutive monthly
installments commencing June 1, 2002, and continuing on the first (1st) day of
each month thereafter through May 1, 2005 ("Maturity").  Each of the first
thirty-five (35) of such principal installments shall be in the amount derived
by dividing the principal amount hereof outstanding on the Conversion Date by
thirty-six (36).  The thirty-sixth (36th) and final installment shall be in the
amount of the remaining principal balance of this Note at Maturity plus all
accrued but unpaid interest hereon.

     Except as hereinafter provided in connection with a default, interest
shall accrue on the outstanding principal balance hereof and on any past due
interest through Maturity at the rate or rates per annum determined pursuant to
the Loan Agreement, payable as provided therein, and shall be calculated as
provided in the Loan Agreement.

     The rate of interest payable upon the indebtedness evidenced by this Note
shall not at any time exceed the maximum rate of interest permitted under the
laws of the State of Oklahoma or federal laws to the extent they apply for loans
of the type and character evidenced by this Note.

     All payments under this Note shall be made in legal tender of the United
States of America or in other immediately available funds at the offices of the
Agent at Bank of Oklahoma Tower, Seven East Second Street, Tulsa, Oklahoma
74172, and no credit shall be given for any payment received by check, draft or










<PAGE>
other instrument or item until such time as the Agent or the holder hereof
shall have received credit therefor from the Agent's or the holder's collecting
agent or, in the event no collecting agent is used, from the bank or other
financial institution upon which said check, draft or other instrument or item
is drawn.  If any payment is due upon a Saturday or Sunday or upon any other day
on which state or national banks in the State of Oklahoma are closed for
business by virtue of a legal holiday for such banks, such payment shall be due
and payable on the next succeeding Business Day, and interest shall accrue to
such day.

     Prior to the Conversion Date, the Borrowers may borrow, repay and
reborrow hereunder at any time and from time to time as provided in the Loan
Agreement.  From and after the Conversion Date, the Borrowers may prepay this
Note in whole or in part, subject to the prepayment limitations contained in the
Loan Agreement; provided, however, that any partial prepayment shall be applied
first to accrued interest, then to unpaid principal installments in the inverse
order of maturity.

     From time to time the Borrowers and the Banks may agree to extend the
maturity date of this Note or to renew this Note, in whole or in part, or a new
note of different form may be substituted for this Note and/or the rate of
interest may be changed, or changes may be made in consideration of loan
extensions, and the holder, from time to time, may waive or surrender, either in
whole or in part, any rights, guarantees, security interests, or liens given for
the benefit of the holder in connection with the payment and the securing the
payment of this Note; but no such occurrences shall in any manner affect, limit,
modify or otherwise impair any rights, guarantees or security of the holder not
specifically waived, released or surrendered in writing, nor shall the Borrowers
or any guarantor, endorser or any other person who is or might be liable hereon,
either primarily or contingently, be released from such liability by reason of
the occurrence of any such event.  The holder hereof, from time to time, shall
have the unlimited right to release any person who might be liable hereon; and
such release shall not affect or discharge the liability of any other person who
is or might be liable hereon.

     If any payment required by this Note to be made is not made within ten
(10) Business Days after the same shall become due and payable, or if any
default occurs under the Loan Agreement, the Security Agreement or under the
provisions of any mortgage, deed of trust, security agreement, assignment,
pledge or other document or agreement which provides security for the
indebtedness evidenced by this Note, the holder hereof may, at its option,
without notice or demand, declare this Note in default and all indebtedness due
and owing hereunder immediately due and payable.  In the event of a default the
entire unpaid balance shall be immediately due and payable, together with any
past due interest at the rate of five percentage points (5%) per annum above
the Applicable Prime Rate ("Default Rate").  The Borrowers and all endorsers,
guarantors and sureties hereby severally waive protest, presentment, demand, and
notice of protest and nonpayment in case this Note or any payment due hereunder
is not paid when due;  and they agree to any renewal of this Note or to any
extension, acceleration or postponement of the time of payment, or any other
indulgence, to any substituting, exchange or release of collateral and to the
release of any party or person primarily or contingently liable hereon without
prejudice to the holder and without notice to the Borrowers or any endorser,
guarantor or surety.  In the event of any controversy, claim or dispute between
the parties affecting or relating to the subject matter or performance of this
Note, the prevailing party shall be entitled to recover from the non-prevailing
party all of its reasonable costs, expenses, including reasonable attorneys' and

                                  -2-
<PAGE>
accountants' fees.  In the event the Agent or BOK is the prevailing party,
the Borrowers, and any guarantor, endorser, surety or any other person who is
or may become liable hereon, will, on demand, pay all such costs and expenses.

     Upon the occurrence of any default hereunder, BOK shall have the right,
immediately and without further action by it, to set off against this Note all
money owed by BOK in any capacity (except for balances in the following accounts
with BOK: Account Nos.  1-01174868, 1-026-5743-7, 1-035-7018-4, 1-038-4862-7, 1-
038-4077-3, 2-079-1154-3, 2-079-2793-3, 2-079-2310-4, 2-079-2864-8, 2-079-3738-
2, 2-083-0274-7, 2-083-0798-3, 2-083-1249-3 and 2-083-1818-0), to each or
any of the Borrowers, guarantor, endorser or any other person who is or might
be liable for payment hereof, whether or not due, and also to set off against
all other liabilities of each of the Borrowers to BOK all money owed by BOK in
any capacity to each or any of the Borrowers; and BOK shall be deemed to have
exercised such right of setoff and to have made a charge against such money
immediately upon the occurrence of such default even though such charge is
made or entered into the books of BOK subsequently thereto.

     This Note is issued pursuant to and subject to the terms of the Loan
Agreement and is secured by the Collateral described in the Loan Agreement,
which provides, among other things, for pre-payment of this Note upon the
occurrence of certain events and for limitations on advances which may be made
hereunder.  This Note is a substitution and replacement of that certain
promissory note dated December 16, 1996, payable by certain of the Borrowers
to the order of BOK in the original principal amount of $25,000,000.
Capitalized terms used and not otherwise defined herein shall have the meanings
assigned to them in the Loan Agreement.

     This Note shall be governed by and construed in accordance with the laws
of the State of Oklahoma.  Borrowers agree that all suits or proceedings arising
from or related to this Note or the Loan Agreement may be litigated in courts,
state or federal, sitting in the State of Oklahoma.  In furtherance of this
provision, Borrowers hereby waive any objection to such venue.

        [the remainder of this page left blank intentionally]























                                  -3-
<PAGE>
     Notwithstanding the single execution of this Note by the President of
each of the Borrowers, each of the Borrowers is jointly and severally bound by
the terms of this Note.


                             "Borrowers"

                             UNIT CORPORATION, a Delaware
                              corporation
                             UNIT DRILLING AND EXPLORATION
                              COMPANY, a Delaware corporation
                             MOUNTAIN FRONT PIPELINE COMPANY,
                              INC., an Oklahoma corporation
                             UNIT PETROLEUM COMPANY, an Oklahoma
                              corporation
                             UNIT DRILLING COMPANY, an Oklahoma
                              corporation
                             PETROLEUM SUPPLY COMPANY, an Oklahoma
                              corporation and
                             UNIT ENERGY CANADA INC., an Alberta, Canada
                              corporation

                             By___________________________________
                               John G. Nikkel, President of UNIT CORPORA-
                               TION, UNIT DRILLING AND EXPLORATION
                               COMPANY, MOUNTAIN FRONT PIPELINE
                               COMPANY, INC., UNIT PETROLEUM COM-
                               PANY, UNIT DRILLING COMPANY, PETRO-
                               LEUM SUPPLY COMPANY, and UNIT ENERGY
                               CANADA INC.



Due: May 1, 2005
     (subject to conversion
     to Term Loan payout on
     the Conversion Date per
     Loan Agreement)




















                                  -4-
<PAGE>
                            EXHIBIT "A-2"

                           PROMISSORY NOTE


$25,000,000                                             April 30, 1998
                                                       Tulsa, Oklahoma

     FOR VALUE RECEIVED, the undersigned, UNIT CORPORATION, a Delaware
corporation, UNIT DRILLING AND EXPLORATION COMPANY, a Delaware corporation,
MOUNTAIN FRONT PIPELINE COMPANY, INC., an Oklahoma corporation, UNIT DRILLING
COMPANY, an Oklahoma corporation, UNIT PETROLEUM COMPANY (formerly Sunshine
Development Corporation), an Oklahoma corporation, PETROLEUM SUPPLY COMPANY, an
Oklahoma corporation, and UNIT ENERGY CANADA, INC., an Alberta, Canada
corporation (individually and collectively the "Borrowers"), jointly and
severally promise to pay to the order of BANKBOSTON, N.A. ("BankBoston"), with
interest, the principal sum of TWENTY FIVE MILLION and no/100ths DOLLARS
($25,000,000) or, if less, the aggregate principal amount of all advances made
by BankBoston to Borrowers pursuant to the Loan Agreement dated as of even date
herewith among Borrowers, BankBoston, Bank of Oklahoma, National Association
("BOK"), NationsBank, N.A. ("Nations") and Local Federal Bank, FSB ("Local
Federal") (collectively the "Banks"), with BOK as Agent, (the Loan Agreement, as
hereafter amended from time to time, referred to as the "Loan Agreement"), which
are outstanding from time to time hereunder and, unless otherwise provided in
the Loan Agreement, the principal balance of this Note outstanding on May 1,
2002 (the "Conversion Date") shall be payable in thirty-six (36) consecutive
monthly installments commencing June 1, 2002, and continuing on the first (1st)
day of each month thereafter through May 1, 2005 ("Maturity").  Each of the
first thirty-five (35) of such principal installments shall be in the amount
derived by dividing the principal amount hereof outstanding on the Conversion
Date by thirty-six (36).  The thirty-sixth (36th) and final installment shall be
in the amount of the remaining principal balance of this Note at Maturity plus
all accrued but unpaid interest hereon.

     Except as hereinafter provided in connection with a default, interest
shall accrue on the outstanding principal balance hereof and on any past due
interest through Maturity at the rate or rates per annum determined pursuant to
the Loan Agreement, payable as provided therein, and shall be calculated as
provided in the Loan Agreement.

     The rate of interest payable upon the indebtedness evidenced by this Note
shall not at any time exceed the maximum rate of interest permitted under the
laws of the State of Oklahoma or federal laws to the extent they apply for loans
of the type and character evidenced by this Note.

     All payments under this Note shall be made in legal tender of the United
States of America or in other immediately available funds at the offices of the
Agent at Bank of Oklahoma Tower, Seven East Second Street, Tulsa, Oklahoma
74172, and no credit shall be given for any payment received by check, draft or
other instrument or item









<PAGE>
until such time as the Agent or the holder hereof shall have received credit
therefor from the Agent's or the holder's collecting agent or, in the event no
collecting agent is used, from the bank or other financial institution upon
which said check, draft or other instrument or item is drawn.  If any payment is
due upon a Saturday or Sunday or upon any other day on which state or national
banks in the State of Oklahoma are closed for business by virtue of a legal
holiday for such banks, such payment shall be due and payable on the next
succeeding Business Day, and interest shall accrue to such day.

     Prior to the Conversion Date, the Borrowers may borrow, repay and
reborrow hereunder at any time and from time to time as provided in the Loan
Agreement.  From and after the Conversion Date, the Borrowers may prepay this
Note in whole or in part, subject to the prepayment limitations contained in the
Loan Agreement; provided, however, that any partial prepayment shall be applied
first to accrued interest, then to unpaid principal installments in the inverse
order of maturity.

     From time to time the Borrowers and the Banks may agree to extend the
maturity date of this Note or to renew this Note, in whole or in part, or a new
note of different form may be substituted for this Note and/or the rate of
interest may be changed, or changes may be made in consideration of loan
extensions, and the holder, from time to time, may waive or surrender, either in
whole or in part, any rights, guarantees, security interests, or liens given for
the benefit of the holder in connection with the payment and the securing the
payment of this Note; but no such occurrences shall in any manner affect, limit,
modify or otherwise impair any rights, guarantees or security of the holder not
specifically waived, released or surrendered in writing, nor shall the Borrowers
or any guarantor, endorser or any other person who is or might be liable hereon,
either primarily or contingently, be released from such liability by reason of
the occurrence of any such event.  The holder hereof, from time to time, shall
have the unlimited right to release any person who might be liable hereon; and
such release shall not affect or discharge the liability of any other person who
is or might be liable hereon.

     If any payment required by this Note to be made is not made within ten
(10) Business Days after the same shall become due and payable, or if any
default occurs under the Loan Agreement, the Security Agreement or under the
provisions of any mortgage, deed of trust, security agreement, assignment,
pledge or other document or agreement which provides security for the
indebtedness evidenced by this Note, the holder hereof may, at its option,
without notice or demand, declare this Note in default and all indebtedness due
and owing hereunder immediately due and payable.  In the event of a default the
entire unpaid balance shall be immediately due and payable, together with any
past due interest at the rate of five percentage points (5%) per annum above the
Applicable Prime Rate ("Default Rate").  The Borrowers and all endorsers,
guarantors and sureties hereby severally waive protest, presentment, demand, and
notice of protest and nonpayment in case this Note or any payment due hereunder
is not paid when due; and they agree to any renewal of this Note or to any
extension, acceleration or postponement of the time of payment, or any other
indulgence, to any substituting, exchange or release of collateral and to the
release of any party or person primarily or contingently liable hereon without
prejudice to the holder and without notice to the Borrowers or any endorser,
guarantor or surety.  In the event of any controversy, claim or dispute between
the parties affecting or relating to the subject matter or performance of this
Note, the prevailing party shall be entitled to recover from the non-prevailing
party all of its reasonable costs, expenses, including reasonable attorneys' and
accountants' fees.  In the event the Agent or BankBoston is the prevailing

                                  -2-
<PAGE>
party, the Borrowers, and any guarantor, endorser, surety or any other person
who is or may become liable hereon, will, on demand, pay all such costs and
expenses.

     Upon the occurrence of any default hereunder, BankBoston shall have the
right, immediately and without further action by it, to set off against this
Note all money owed by BankBoston in any capacity, to each or any of the
Borrowers, guarantor, endorser or any other person who is or might be liable for
payment hereof, whether or not due, and also to set off against all other
liabilities of each of the Borrowers to BankBoston all money owed by BankBoston
in any capacity to each or any of the Borrowers; and BankBoston shall be deemed
to have exercised such right of setoff and to have made a charge against such
money immediately upon the occurrence of such default even though such charge is
made or entered into the books of BankBoston subsequently thereto.

     This Note is issued pursuant to and subject to the terms of the Loan
Agreement and is secured by the Collateral described in the Loan Agreement,
which provides, among other things, for prepayment of this Note upon the
occurrence of certain events and for limitations on advances which may be made
hereunder.  This Note is a substitution, replacement and increase of that
certain promissory note dated December 16, 1996, payable by certain of the
Borrowers to the order of BankBoston in the original principal amount of
$23,500,000.  Capitalized terms used and not otherwise defined herein shall have
the meanings assigned to them in the Loan Agreement.

     This Note shall be governed by and construed in accordance with the laws
of the State of Oklahoma.  Borrowers agree that all suits or proceedings arising
from or related to this Note or the Loan Agreement may be litigated in courts,
state or federal, sitting in the State of Oklahoma.  In furtherance of this
provision, Borrowers hereby waive any objection to such venue.

        [the remainder of this page left blank intentionally]


























                                  -3-
<PAGE>

     Notwithstanding the single execution of this Note by the President of
each of the Borrowers, each of the Borrowers is jointly and severally bound by
the terms of this Note.


                             "Borrowers"

                             UNIT CORPORATION, a Delaware
                              corporation
                             UNIT DRILLING AND EXPLORATION
                              COMPANY, a Delaware corporation
                             MOUNTAIN FRONT PIPELINE COMPANY,
                              INC., an Oklahoma corporation
                             UNIT PETROLEUM COMPANY, an Oklahoma
                              corporation
                             UNIT DRILLING COMPANY, an Oklahoma
                              corporation
                             PETROLEUM SUPPLY COMPANY, an Oklahoma
                              corporation and
                             UNIT ENERGY CANADA INC., an Alberta, Canada
                              corporation


                             By_________________________________________
                               John G. Nikkel, President of UNIT CORPORA-
                               TION, UNIT DRILLING AND EXPLORATION
                               COMPANY, MOUNTAIN FRONT PIPELINE
                               COMPANY, INC., UNIT PETROLEUM COM-
                               PANY, UNIT DRILLING COMPANY, PETRO-
                               LEUM SUPPLY COMPANY and UNIT ENERGY
                               CANADA INC.

Due: May 1, 2005
     (subject to conversion
     to Term Loan payout on
     the Conversion Date per
     Loan Agreement)




















                                  -4-
<PAGE>
                            EXHIBIT "A-3"

                           PROMISSORY NOTE


$30,000,000                                             April 30, 1998
                                                       Tulsa, Oklahoma

     FOR VALUE RECEIVED, the undersigned, UNIT CORPORATION, a Delaware
corporation, UNIT DRILLING AND EXPLORATION COMPANY, a Delaware corporation,
MOUNTAIN FRONT PIPELINE COMPANY, INC., an Oklahoma corporation, UNIT DRILLING
COMPANY, an Oklahoma corporation, UNIT PETROLEUM COMPANY (formerly Sunshine
Development Corporation), an Oklahoma corporation, PETROLEUM SUPPLY COMPANY, an
Oklahoma corporation, and UNIT ENERGY CANADA INC. an Alberta, Canada corporation
(individually and collectively the "Borrowers"), jointly and severally promise
to pay to the order of NATIONSBANK, N.A. ("Nations") with interest, the
principal sum of THIRTY MILLION and no/100ths DOLLARS ($30,000,000) or, if less,
the aggregate principal amount of all advances made by Nations' to Borrowers
pursuant to the Loan Agreement dated as of even date herewith among Borrowers,
Nations, Bank of Oklahoma, National Association ("BOK"), BankBoston, N.A.
("BankBoston") and Local Federal Bank, FSB ("Local Federal") (collectively the
"Banks"), with BOK as Agent, (the Loan Agreement, as hereafter amended from time
to time, referred to as the "Loan Agreement"), which are outstanding from time
to time hereunder and, except as otherwise provided in the Loan Agreement, the
principal balance of this Note outstanding on May 1, 2002 (the "Conversion
Date") shall be payable in thirty-six (36) consecutive monthly installments
commencing June 1, 2002, and continuing on the first (1st) day of each month
thereafter through May 1, 2005 ("Maturity").  Each of the first thirty-five (35)
of such principal installments shall be in the amount derived by dividing the
principal amount hereof outstanding on the Conversion Date by thirty-six (36).
The thirty-sixth (36th) and final installment shall be in the amount of the
remaining principal balance of this Note at Maturity plus all accrued but unpaid
interest hereon.

     Except as hereinafter provided in connection with a default, interest
shall accrue on the outstanding principal balance hereof and on any past due
interest through Maturity at the rate or rates per annum determined pursuant to
the Loan Agreement, payable as provided therein, and shall be calculated as
provided in the Loan Agreement.

     The rate of interest payable upon the indebtedness evidenced by this Note
shall not at any time exceed the maximum rate of interest permitted under the
laws of the State of Oklahoma or federal laws to the extent they apply for loans
of the type and character evidenced by this Note.

     All payments under this Note shall be made in legal tender of the United
States of America or in other immediately available funds at the offices of the
Agent at Bank of Oklahoma Tower, Seven East Second Street, Tulsa, Oklahoma
74172, and no credit shall be given for any payment received by check, draft or










<PAGE>
other instrument or item until such time as the Agent or the holder hereof
shall have received credit therefor from the Agent's or the holder's collecting
agent or, in the event no collecting agent is used, from the bank or other
financial institution upon which said check, draft or other instrument or item
is drawn.  If any payment is due upon a Saturday or Sunday or upon any other day
on which state or national banks in the State of Oklahoma are closed for
business by virtue of a legal holiday for such banks, such payment shall be due
and payable on the next succeeding Business Day, and interest shall accrue to
such day.

     Prior to the Conversion Date, the Borrowers may borrow, repay and
reborrow hereunder at any time and from time to time as provided in the Loan
Agreement.  From and after the Conversion Date, the Borrowers may prepay this
Note in whole or in part, subject to the prepayment limitations contained in the
Loan Agreement; provided, however, that any partial prepayment shall be applied
first to accrued interest, then to unpaid principal installments in the inverse
order of maturity.

     From time to time the Borrowers and the Banks may agree to extend the
maturity date of this Note or to renew this Note, in whole or in part, or a new
note of different form may be substituted for this Note and/or the rate of
interest may be changed, or changes may be made in consideration of loan
extensions, and the holder, from time to time, may waive or surrender, either in
whole or in part, any rights, guarantees, security interests, or liens given for
the benefit of the holder in connection with the payment and the securing the
payment of this Note; but no such occurrences shall in any manner affect, limit,
modify or otherwise impair any rights, guarantees or security of the holder not
specifically waived, released or surrendered in writing, nor shall the Borrowers
or any guarantor, endorser or any other person who is or might be liable hereon,
either primarily or contingently, be released from such liability by reason of
the occurrence of any such event.  The holder hereof, from time to time, shall
have the unlimited right to release any person who might be liable hereon; and
such release shall not affect or discharge the liability of any other person who
is or might be liable hereon.

     If any payment required by this Note to be made is not made within ten
(10) Business Days after the same shall become due and payable, or if any
default occurs under the Loan Agreement, the Security Agreement or under the
provisions of any mortgage, deed of trust, security agreement, assignment,
pledge or other document or agreement which provides security for the
indebtedness evidenced by this Note, the holder hereof may, at its option,
without notice or demand, declare this Note in default and all indebtedness due
and owing hereunder immediately due and payable.  In the event of a default the
entire unpaid balance shall be immediately due and payable, together with any
past due interest at the rate of five percentage points (5%) per annum above
the Applicable Prime Rate ("Default Rate").  The Borrowers and all endorsers,
guarantors and sureties hereby severally waive protest, presentment, demand, and
notice of protest and nonpayment in case this Note or any payment due hereunder
is not paid when due;  and they agree to any renewal of this Note or to any
extension, acceleration or postponement of the time of payment, or any other
indulgence, to any substituting, exchange or release of collateral and to the
release of any party or person primarily or contingently liable hereon without
prejudice to the holder and without notice to the Borrowers or any endorser,
guarantor or surety.  In the event of any controversy, claim or dispute between
the parties affecting or relating to the subject matter or performance of this
Note, the prevailing party shall be entitled to recover from the non-prevailing
party all of its reasonable costs, expenses, including reasonable attorneys' and

                                  -2-
<PAGE>
accountants' fees.  In the event the Agent or Nations is the prevailing party,
the Borrowers, and any guarantor, endorser, surety or any other person who is
or may become liable hereon, will, on demand, pay all such costs and expenses.

     Upon the occurrence of any default hereunder, Nations shall have the
right, immediately and without further action by it, to set off against this
Note all money owed by Nations in any capacity, to each or any of the Borrowers,
guarantor, endorser or any other person who is or might be liable for payment
hereof, whether or not due, and also to set off against all other liabilities of
each of the Borrowers to Nations all money owed by Nations in any capacity to
each or any of the Borrowers; and Nations shall be deemed to have exercised such
right of setoff and to have made a charge against such money immediately upon
the occurrence of such default even though such charge is made or entered into
the books of Nations subsequently thereto.

     This Note is issued pursuant to and subject to the terms of the Loan
Agreement and is secured by the Collateral described in the Loan Agreement,
which provides, among other things, for prepayment of this Note upon the
occurrence of certain events and for limitations on advances which may be made
hereunder.  This Note is a substitution and replacement of that certain
promissory note dated December 16, 1996, payable by certain of the Borrowers to
the order of Nations in the original principal amount of $25,000,000.
Capitalized terms used and not otherwise defined herein shall have the meanings
assigned to them in the Loan Agreement.

     This Note shall be governed by and construed in accordance with the laws
of the State of Oklahoma.  Borrowers agree that all suits or proceedings arising
from or related to this Note or the Loan Agreement may be litigated in courts,
state or federal, sitting in the State of Oklahoma.  In furtherance of this
provision, Borrowers hereby waive any objection to such venue.

             [remainder of page left blank intentionally]


























                                  -3-
<PAGE>
     Notwithstanding the single execution of this Note by the President of
each of the Borrowers, each of the Borrowers is jointly and severally bound by
the terms of this Note.


                             "Borrowers"

                             UNIT CORPORATION, a Delaware
                              corporation
                             UNIT DRILLING AND EXPLORATION
                              COMPANY, a Delaware corporation
                             MOUNTAIN FRONT PIPELINE COMPANY,
                              INC., an Oklahoma corporation
                             UNIT PETROLEUM COMPANY, an Oklahoma
                              corporation
                             UNIT DRILLING COMPANY, an Oklahoma
                              corporation
                             PETROLEUM SUPPLY COMPANY, an Oklahoma
                              corporation and
                             UNIT ENERGY CANADA INC., an Alberta, Canada
                              corporation


                             By___________________________________________
                               John G. Nikkel, President of UNIT CORPORA-
                               TION, UNIT DRILLING AND EXPLORATION
                               COMPANY, MOUNTAIN FRONT PIPELINE
                               COMPANY, INC., UNIT PETROLEUM COM-
                               PANY, UNIT DRILLING COMPANY, PETRO-
                               LEUM SUPPLY COMPANY and UNIT ENERGY
                               CANADA INC.



Due: May 1, 2005
     (subject to conversion
     to Term Loan payout on
     the Conversion Date per
     Loan Agreement)



















                                  -4-
<PAGE>
                            EXHIBIT "A-4"

                           PROMISSORY NOTE


$15,000,000                                              April 30 1998
                                                       Tulsa, Oklahoma

     FOR VALUE RECEIVED, the undersigned, UNIT CORPORATION, a Delaware
corporation, UNIT DRILLING AND EXPLORATION COMPANY, a Delaware corporation,
MOUNTAIN FRONT PIPELINE COMPANY, INC., an Oklahoma corporation, UNIT DRILLING
COMPANY, an Oklahoma corporation, UNIT PETROLEUM COMPANY (formerly Sunshine
Development Corporation), an Oklahoma corporation, PETROLEUM SUPPLY COMPANY, an
Oklahoma corporation and UNIT ENERGY CANADA INC., an Alberta, Canada corporation
(individually and collectively the "Borrowers"), jointly and severally promise
to pay to the order of LOCAL FEDERAL BANK, FSB  ("Local Federal") with interest,
the principal sum of FIFTEEN MILLION and no/100ths DOLLARS ($15,000,000) or, if
less, the aggregate principal amount of all advances made by Local Federal to
Borrowers pursuant to the Loan Agreement dated as of even date herewith among
Borrowers, Local Federal, Bank of Oklahoma, National Association ("BOK"),
BankBoston ("BankBoston") and NationsBank, N.A. ("Nations") (collectively the
"Banks") (the Loan Agreement, as hereafter amended from time to time, referred
to as the "Loan Agreement"), which are outstanding from time to time hereunder
and, except unless otherwise provided in the Loan Agreement, the principal
balance of this Note outstanding on May 1, 2002 (the "Conversion Date") shall be
payable in thirty-six (36) consecutive monthly installments commencing June 1,
2002, and continuing on the first (1st) day of each month thereafter through
May 1, 2005 ("Maturity").  Each of the first thirty-five (35) of such principal
installments shall be in the amount derived by dividing the principal amount
hereof outstanding on the Conversion Date by thirty-six (36).  The thirty-sixth
(36th) and final installment shall be in the amount of the remaining principal
balance of this Note at Maturity plus all accrued but unpaid interest hereon.

     Except as hereinafter provided in connection with a default, interest
shall accrue on the outstanding principal balance hereof and on any past due
interest through Maturity at the rate or rates per annum determined pursuant to
the Loan Agreement, payable as provided therein, and shall be calculated as
provided in the Loan Agreement.

     The rate of interest payable upon the indebtedness evidenced by this Note
shall not at any time exceed the maximum rate of interest permitted under the
laws of the State of Oklahoma or federal laws to the extent they apply for loans
of the type and character evidenced by this Note.

     All payments under this Note shall be made in legal tender of the United
States of America or in other immediately available funds at the offices of the
Agent at Bank of Oklahoma Tower, Seven East Second Street, Tulsa, Oklahoma
74172, and no credit shall be given for any payment received by check, draft or











<PAGE>
other instrument or item until such time as the Agent or the holder hereof
shall have received credit therefor from the Agent's or the holder's collecting
agent or, in the event no collecting agent is used, from the bank or other
financial institution upon which said check, draft or other instrument or item
is drawn.  If any payment is due upon a Saturday or Sunday or upon any other day
on which state or national banks in the State of Oklahoma are closed for
business by virtue of a legal holiday for such banks, such payment shall be due
and payable on the next succeeding Business Day, and interest shall accrue to
such day.

     Prior to the Conversion Date, the Borrowers may borrow, repay and
reborrow hereunder at any time and from time to time as provided in the Loan
Agreement.  From and after the Conversion Date, the Borrowers may prepay this
Note in whole or in part, subject to the prepayment limitations contained in the
Loan Agreement; provided, however, that any partial prepayment shall be applied
first to accrued interest, then to unpaid principal installments in the inverse
order of maturity.

     From time to time the Borrowers and the Banks may agree to extend the
maturity date of this Note or to renew this Note, in whole or in part, or a new
note of different form may be substituted for this Note and/or the rate of
interest may be changed, or changes may be made in consideration of loan
extensions, and the holder, from time to time, may waive or surrender,
either in whole or in part, any rights, guarantees, security interests, or liens
given for the benefit of the holder in connection with the payment and the
securing the payment of this Note; but no such occurrences shall in any manner
affect, limit, modify or otherwise impair any rights, guarantees or security of
the holder not specifically waived, released or surrendered in writing, nor
shall the Borrowers or any guarantor, endorser or any other person who is or
might be liable hereon, either primarily or contingently, be released from such
liability by reason of the occurrence of any such event.  The holder hereof,
from time to time, shall have the unlimited right to release any person who
might be liable hereon; and such release shall not affect or discharge the
liability of any other person who is or might be liable hereon.

     If any payment required by this Note to be made is not made within ten
(10) Business Days after the same shall become due and payable, or if any
default occurs under the Loan Agreement, the Security Agreement or under the
provisions of any mortgage, deed of trust, security agreement, assignment,
pledge or other document or agreement which provides security for the
indebtedness evidenced by this Note, the holder hereof may, at its option,
without notice or demand, declare this Note in default and all indebtedness due
and owing hereunder immediately due and payable.  In the event of a default the
entire unpaid balance shall be immediately due and payable, together with any
past due interest at the rate of five percentage points (5%) per annum above
the Applicable Prime Rate ("Default Rate").  The Borrowers and all endorsers,
guarantors and sureties hereby severally waive protest, presentment, demand, and
notice of protest and nonpayment in case this Note or any payment due hereunder
is not paid when due;  and they agree to any renewal of this Note or to any
extension, acceleration or postponement of the time of payment, or any other
indulgence, to any substituting, exchange or release of collateral and to the
release of any party or person primarily or contingently liable hereon without
prejudice to the holder and without notice to the Borrowers or any endorser,
guarantor or surety.  In the event of any controversy, claim or dispute between
the parties affecting or relating to the subject matter or performance of this
Note, the prevailing party shall be entitled to recover from the non-prevailing
party all of its reasonable costs, expenses, including reasonable attorneys' and

                                  -2-
<PAGE>
accountants' fees.  In the event the Agent or Local Federal is the prevailing
party, the Borrowers, and any guarantor, endorser, surety or any other person
who is or may become liable hereon, will, on demand, pay all such costs and
expenses.

     Upon the occurrence of any default hereunder, Local Federal shall have
the right, immediately and without further action by it, to set off against this
Note all money owed by Local Federal in any capacity, to each or any of the
Borrowers, guarantor, endorser or any other person who is or might be liable for
payment hereof, whether or not due, and also to set off against all other
liabilities of each of the Borrowers to Local Federal all money owed by Local
Federal in any capacity to each or any of the Borrowers; and Local Federal shall
be deemed to have exercised such right of setoff and to have made a charge
against such money immediately upon the occurrence of such default even though
such charge is made or entered into the books of Local Federal subsequently
thereto.

     This Note is issued pursuant to and subject to the terms of the Loan
Agreement and is secured by the Collateral described in the Loan Agreement,
which provides, among other things, for prepayment of this Note upon the
occurrence of certain events and for limitations on advances which
may be made hereunder.  Capitalized terms used and not otherwise defined
herein shall have the meanings assigned to them in the Loan Agreement.

     This Note shall be governed by and construed in accordance with the laws
of the State of Oklahoma.  Borrowers agree that all suits or proceedings arising
from or related to this Note or the Loan Agreement may be litigated in courts,
state or federal, sitting in the State of Oklahoma.  In furtherance of this
provision, Borrowers hereby waive any objection to such venue.

        [the remainder of this page left blank intentionally]



























                                  -3-
<PAGE>
     Notwithstanding the single execution of this Note by the President of
each of the Borrowers, each of the Borrowers is jointly and severally bound by
the terms of this Note.


                             "Borrowers"

                             UNIT CORPORATION, a Delaware
                              corporation
                             UNIT DRILLING AND EXPLORATION
                              COMPANY, a Delaware corporation
                             MOUNTAIN FRONT PIPELINE COMPANY,
                              INC., an Oklahoma corporation
                             UNIT PETROLEUM COMPANY, an Oklahoma
                              corporation
                             UNIT DRILLING COMPANY, an Oklahoma
                              corporation
                             PETROLEUM SUPPLY COMPANY, an Oklahoma
                              corporation and
                             UNIT ENERGY CANADA INC., an Alberta, Canada
                              corporation


                             By________________________________________
                               John G. Nikkel, President of UNIT CORPORA-
                               TION, UNIT DRILLING AND EXPLORATION
                               COMPANY, MOUNTAIN FRONT PIPELINE
                               COMPANY, INC., UNIT PETROLEUM COM-
                               PANY, UNIT DRILLING COMPANY, PETRO-
                               LEUM SUPPLY COMPANY and UNIT ENERGY
                               CANADA INC.



Due: May 1, 2005
     (subject to conversion
     to Term Loan payout on
     the Conversion Date per
     Loan Agreement)



















                                  -4-
<PAGE>
                          SECURITY AGREEMENT

     THIS SECURITY AGREEMENT, dated effective as of April 30, 1998, is between
and among UNIT DRILLING COMPANY, an Oklahoma corporation ("Unit") and BANK OF
OKLAHOMA, NATIONAL ASSOCIATION, a national banking association, BANKBOSTON,
N.A., NATIONSBANK, N.A. and LOCAL FEDERAL BANK, FSB (collectively referred to
herein as the "Banks") and BANK OF OKLAHOMA, NATIONAL ASSOCIATION, as Agent for
the Banks (in such capacity, herein referred to as the "Agent").

     W I T N E S S E T H:

     WHEREAS, the Borrowers have entered into a Loan Agreement dated as of the
date hereof (as the same may be amended or modified from time to time, referred
to herein as the "Loan Agreement") with the Banks and the Agent pursuant to
which the Banks have agreed to make loans and extend credit to the Borrowers,
all as more particularly described in the Loan Agreement; and

     WHEREAS, ANB (as hereinafter defined) is no longer a part of the Bank
group pursuant to the Loan Agreement and has been replaced by Local Federal
Bank, FSB;

     WHEREAS, the Loan Agreement provides for the execution and delivery of a
Security Agreement in the form of this Security Agreement as a restatement,
modification, amendment and continuation of that certain Security Agreement
dated as of August 3, 1995, as amended from time to time (collectively the
"Prior Security Agreement") among Unit, as debtor, the Agent, certain of
the Banks (other than Local Federal Bank, FSB) and American National Bank and
Trust Company of Shawnee ("ANB");

     NOW, THEREFORE, for and in consideration of the loans and extension of
credit described in the Loan Agreement and the mutual covenants and promises
therein contained, the Banks, the Agent and Unit, agree as follows:


     1.   Definitions.  When used herein, unless the context shall otherwise
require, the following terms shall have the following meanings:

     The terms "Default Rate", "Event of Default", "Indebtedness", "Notes" and
all other terms used but not defined herein, shall have the meanings assigned
thereto in the Loan Agreement.

     "Collateral" shall mean all property or rights in which a security
interest is granted hereunder.

     "UCC" shall mean the Uniform Commercial Code in effect at the time in the
State of Oklahoma or, if it is determined by a court of law that the Laws of
another State or jurisdiction should be applied with respect to any of the
Collateral, then the Uniform Commercial Code or similar Laws in effect at the
time in the relevant State or jurisdiction with respect to that portion of
the Collateral.









<PAGE>
     2.   Grant of Security Interest.  As security for the payment of all
Indebtedness, Unit hereby assigns, confirms and grants to the Agent, for the
benefit of the Banks, a first and prior continuous and continuing security
interest in, and assignment of, all of the following, whether now or hereafter
existing or acquired (except as otherwise provided in the Loan Agreement or
herein):

          (a)  All of Unit's drilling rigs and related equipment, inventory,
     fixtures, parts, drill pipe, equipment, tools and supplies identified in
     Schedule 1 hereto or used or acquired in connection therewith together with
     all additions and accessions thereto and replacements or substitutions
     thereof, and all drilling rigs and related equipment acquired by Unit after
     the date hereof and reflected on its financial statements as fixed assets,
     and all related parts, drill pipe, equipment, tools and supplies, together
     with all accounts and general intangibles relating thereto or arising
     therefrom and all products and proceeds of and all additions and accessions
     thereto and replacements and substitutions therefor including without
     limitation insurance proceeds; and

          (b)  All money, proceeds and collections arising from or by virtue
     of the sale, lease or other disposition of any part of the property
     described in Paragraph (a) above, and whatever else is received upon any
     exchange, collection or other disposition of any such property, including
     all guarantees and other security therefor, all right, title and interest
     of Unit in such property giving rise thereto, all insurance payable by
     reason of loss or damage to any thereof, and any and all replacements and
     substitutions therefor.

     3.    Warranties.  Unit warrants that except as otherwise expressly
permitted in the Loan Agreement (including without limitation, the prior lien on
Rig # 39 as described in Section 6.14(v) thereof:  (i) no financing statement
(other than any which may have been filed on behalf of the Agent or the Banks)
covering any of the Collateral is on file in any public office; (ii) Unit is and
will be the lawful owner of all of the Collateral, free of all liens and claims
whatsoever, other than the security interest hereunder, with full power and
authority to execute this Security Agreement and to perform its obligations
hereunder, and to subject the Collateral to the security interest hereunder; and
(iii) all information with respect to the Collateral set forth on any schedule,
certificate or other writing at any time heretofore or hereafter furnished by
Unit or the Borrowers to the Agent or the Banks, is and will be true and correct
in all material respects as of the date furnished.

     4.   Use and Possession.  As long as there exists no Event of Default,
Unit may have possession of the Collateral and use the same in any lawful manner
not inconsistent with this Security Agreement, with any applicable Law or
regulation or with any policy of insurance on any of such Collateral.

     5.   Location of Collateral.  Unit hereby represents and warrants to the
Agent and the Banks that the Collateral is located only in the States of Texas,
Oklahoma and Louisiana and, to the extent contemplated by Section 6.22 of the
Loan Agreement, in certain South American countries from time to time upon prior
written notice thereof to the Agent (including such reasonable details
pertaining thereto as is appropriate to permit Agent on behalf of the Banks to
attempt to perfect its liens thereagainst in a reasonable manner acceptable to
the Banks). Unit will not open or establish any warehouse not owned or



                                  -2-
<PAGE>
established as of the date of this Security Agreement or locate any of the
Collateral in any state or other location except as set forth above without
obtaining the Majority Banks' prior written consent and executing such financing
statements as the Agent and its counsel deem necessary to perfect its security
interest therein.  Unit shall immediately notify the Agent of the occurrence of
any event causing loss or depreciation in value (except for ordinary wear and
tear and loss or depreciation in value) of the Collateral and the amount of such
loss or depreciation.

     6.   Collateral Reports.  Unit will from time to time, as the Agent may
reasonably request, deliver to the Agent a schedule identifying any and all
items of Collateral then owned by Unit.  Nothing in this Section 6 shall be
construed to authorize the sale, transfer, exchange or other disposition of any
item of Collateral by Unit without the express written consent of the Banks.

     7.   Covenants of Unit.  Unit will (i) upon request of the Agent, execute
such financing statements, lien entry forms and other documents (and pay the
cost of filing or recording the same or this Security Agreement in all public
offices deemed necessary or appropriate by the Agent and its counsel) and do
such other acts, all as the Agent may from time to time reasonably request to
establish and maintain a valid security interest in the Collateral (free of
all other liens, claims and rights of third parties whatsoever) to secure the
payment of the Indebtedness; (ii) except as provided in Section 5 hereof, keep
all Collateral only in the States of Oklahoma, Texas and Louisiana or in
such other states or other location as shall be provided to the Agent at least
fifteen (15) days prior to the location of any Collateral thereat, and which
address shall be acceptable to the Agent; (iii) furnish the Agent such
information concerning Unit and the Collateral as the Agent or the Banks
may from time to time reasonably request;  (iv) permit the Agent and the Banks
and their agents and designees, all at their sole cost and risk, from time to
time to inspect the Collateral and to inspect, audit and make copies of and
extracts from all records and all other papers in the possession of Unit
with the exception of the portion thereof covered by an attorney-client
privilege or constituting attorney work product, and will, upon reasonable
request of the Agent or the Banks, deliver to the Agent all of such records and
papers which pertain to the Collateral; (v) upon request of the Agent, stamp on
Unit's records concerning the Collateral, a notation, in form satisfactory to
the Agent, of the security interest of the Agent hereunder;  (vi) not sell,
lease, transfer or otherwise dispose of, assign or create or permit to exist any
lien on or security interest in any Collateral to or in favor of anyone other
than the Agent, except with the prior written consent of the Banks; (vii) to the
extent possible, at all times keep all Collateral insured against loss, damage,
theft and other risks, in such amounts, with such companies, under such policies
and in such form, all as shall be reasonably satisfactory to the Banks, which
policies shall provide that loss thereunder shall be payable to the Agent as its
interest may appear, and such policies or certificates thereof shall, if the
Agent so requests, be deposited with the Agent; (viii) keep all Collateral in
good repair and practice preventive maintenance in accordance with industry
standards thereon; (ix) if the Collateral is of a type normally used in more
than one state, whether or not actually so used, Unit will immediately give
written notice to the Agent of any change in the location of the chief
executive office or the chief place of business of Unit, and of any transfer of
any such Collateral in any jurisdiction other than the States of Oklahoma, Texas
and Louisiana or as otherwise provided in Section 5 hereof; and (x) reimburse
the Agent or the Banks for all reasonable expenses, including reasonable
attorneys' fees and legal expenses, incurred by the Agent or the Banks in


                                  -3-
<PAGE>
seeking to collect or enforce any rights in the Collateral and to collect the
Notes and all other Indebtedness and to enforce its rights hereunder.

     8.   Trade Names; Change of Name.  Unit does not operate in any
jurisdiction under, or in the preceding twelve (12) months has not operated in
any jurisdiction under, any trade names, fictitious names or other names.  Unit
shall not change its legal name or assume or operate in any jurisdiction under
any trade, fictitious or other name except new names established in accordance
with the last sentence of this paragraph 8.  Unit shall not assume or operate
in any jurisdiction under any trade, fictitious or other name until (i) Unit
shall have given to the Agent prior written notice of Unit's intention to do so,
clearly describing such new name and the jurisdictions in which such new name
shall be used and providing such other information in connection therewith as
the Agent may reasonably request, and (ii) with respect to such new name, it
shall have taken all action, reasonably satisfactory to the Agent, to maintain
the security interest of the Agent in the Collateral intended to be granted
hereby at all times fully perfected and in full force and effect.

     9.   Further Actions.  Unit will, at its own expense, make, execute,
endorse, acknowledge, file and/or deliver to the Agent from time to time
assurances or instruments and take such further steps relating to the Collateral
and rights covered by the security interest hereby granted, as the Agent may
reasonably require and that are reasonably related to the Banks' rights
hereunder.

     10.  Remedies.  Whenever an Event of Default shall exist hereunder or
pursuant to the Loan Agreement or the Security Instruments, the Indebtedness, at
the sole option of the Agent, shall be immediately due and payable, or not, as
provided in the Loan Agreement, and the Agent may from time to time exercise any
rights and remedies available to it hereunder, under the Loan Agreement or
applicable law.  Unit agrees, in case of an Event of Default and upon the
request of the Agent, to assemble the Collateral, at Unit's expense, at a
convenient place acceptable to the Agent.  Without limiting the foregoing, upon
the existence of an Event of Default the Agent may, to the fullest extent
permitted by applicable law, without advertisement, hearing or process of law
of any kind, (a) enter upon any premises where any of the Collateral may be
located and take possession of and remove all or any such items, (b) sell any or
all of the Collateral free of all rights and claims of Unit therein and thereto
at any public or private sale, and (c) bid for and purchase any of the
Collateral at any such sale.  Unit hereby expressly waives, to the fullest
extent permitted by applicable law, any and all notices, advertisements,
hearings or process of law in connection with the exercise by the Agent of any
of its rights and remedies upon the existence of an Event of Default. If any
notification of intended disposition of any of the Collateral is required by
law, such notification, if mailed, shall be deemed reasonably and properly given
if mailed at least ten (10) days before disposition, postage prepaid, addressed
to Unit, at the address shown on the signature page or at any other address of
Unit appearing on the records of the Agent or the Banks.  Any proceeds of any of
the Collateral may be applied by the Agent to the payment of expenses incurred
in connection with enforcing its rights or remedies with respect to the
Collateral, including reasonable attorneys' fees and legal expenses, and any
balance of such proceeds may be applied by the Agent toward the payment of such
of the Indebtedness, and in such order of application as the Agent may from time
to time elect.




                                  -4-
<PAGE>
     11.  Waiver of Claims.  Except as otherwise provided in this Security
Agreement, UNIT HEREBY WAIVES, TO THE EXTENT PERMITTED BY APPLICABLE LAW,
JUDICIAL HEARING IN CONNECTION WITH THE AGENT'S TAKING POSSESSION OR THE AGENT'S
DISPOSITION OF ANY OF THE COLLATERAL, INCLUDING, WITHOUT LIMITATION, ANY AND ALL
HEARINGS FOR ANY PREJUDGMENT REMEDY OR REMEDIES AND ANY SUCH RIGHT WHICH UNIT
WOULD OTHERWISE HAVE UNDER THE CONSTITUTION OR ANY STATUTE OF THE UNITED STATES
OR OF ANY STATE (INCLUDING WITHOUT LIMITATION THE STATES OF OKLAHOMA AND TEXAS),
and Unit further waives, to the fullest extent permitted by law:

          (a)  all damages occasioned by such taking of possession except any
     damages which are the direct result of the Agent's gross negligence or
     willful misconduct;

          (b)  all other requirements as to the time, place and terms of sale
     or other requirements with respect to the enforcement of the Agent's rights
     hereunder; and

          (c)  all rights of redemption, appraisement, valuation, stay,
     extension or moratorium now or hereafter in force under any applicable law
     in order to prevent or delay the enforcement of this Agreement or the
     absolute sale of the Collateral or any portion thereof, and Unit, for
     itself and all who may claim under it, insofar as it or they now or
     hereafter lawfully may, hereby waives the benefit of all such laws.

Any sale of, or the grant of options to purchase, or any other realization
upon, any Collateral shall operate to divest all right, title, interest, claim
and demand, either at law or in equity, of Unit therein and thereto, and shall
be a perpetual bar both at law and in equity against Unit and against any and
all Persons claiming or attempting to claim the Collateral so sold, optioned
or realized upon or any part thereof, from, through and under Unit.

     12.  Remedies Cumulative.  Each and every right, power and remedy hereby
specifically  given to the Agent shall be in addition to every other right,
power and remedy specifically given under this Security Agreement, the Loan
Agreement or the Security Instruments or now or hereafter existing at law or in
equity, or by statute and each and every right, power and remedy whether
specifically herein given or otherwise existing may be exercised from time to
time or simultaneously and as often and in such order as may be deemed expedient
by the Agent.  All such rights, powers and remedies shall be cumulative and the
exercise or the beginning of exercise of one shall not be deemed a waiver of the
right to exercise of any other or others.  No delay or omission of the Agent
in the exercise of any such right, power or remedy and no renewal or extension
of any of the Indebtedness shall impair any such right, power or remedy or shall
be construed to be a waiver of any Default or Event of Default or an
acquiescence therein.  No notice to or demand on Unit in any case shall entitle
it to any other or further notice or demand in similar or other circumstances or
constitute a waiver of any of the rights of the Agent or the Banks to any
other or further action in any circumstances without notice or demand.  In the
event that the Agent shall bring any suit to enforce any of its rights
hereunder, then in such suit the prevailing party may recover reasonable
expenses, including attorneys fees, and the amounts thereof shall be included in
such judgment.






                                  -5-
<PAGE>
     13.  Reimbursement of Agent.  The Agent may from time to time, at its
option, perform any agreement, obligation or covenant of Unit hereunder which
Unit shall fail to perform, and take any other action which the Agent reasonably
deems necessary for the maintenance or preservation of any of the Collateral or
its interest therein, and Unit agrees to forthwith reimburse the Agent for
all reasonable expenses of the Agent in connection with the foregoing,
together with interest thereon at the Default Rate from the date of notice
thereof to Unit until reimbursed by the Agent.

     14.  Reasonable Care.  The Agent shall be deemed to have exercised
reasonable care in the custody and preservation of any Collateral in its
possession if it takes such action for that purpose as Unit may request in
writing, but failure of the Agent to comply with any such request shall not
of itself be deemed a failure to exercise reasonable care.

     15.  Reassignment of Property.  Upon full and complete payment of all of
the Indebtedness, together with all costs incurred in connection therewith, at
the request and expense of Unit, the Agent on behalf of the Banks will make,
execute and deliver a release of Agent's security interest and reassignment to
Unit, of the personal properties assigned hereby and of the monies, revenues,
proceeds, benefits and payments if any, which may be owing thereon, but without
covenant or warranty, however, of any kind or character, express or implied,
and with the provision that neither the Banks nor the Agent will be required or
called upon to refund or account for any payments properly made to them or it
which have been or may be properly applied to any of the Indebtedness.

     16.  Notices.  Any notice from the Agent or the Banks to Unit, if mailed,
shall be deemed given when mailed, by certified or registered mail, postage
prepaid, addressed to Unit at its address shown on the signature page hereto or
at any other address of Unit appearing on the records of the Agent or the Banks
or at such other address as Unit shall have provided to the Agent for such
purpose at least ten (10) days before the action to be taken which is referred
to in said notice.  Any notice from Unit to the Agent or the Banks, if mailed,
shall be deemed given when mailed, by certified or registered mail, postage
prepaid, addressed to the Agent or the Banks at the address shown on the
signature page hereto or at such other address as the Agent or the Banks shall
have provided to Unit for such purpose.

     17.  No Waiver.  No delay on the part of the Agent or the Banks in the
exercise of any right or remedy shall operate as a waiver thereof, and no single
or partial exercise by the Agent or the Banks of any right or remedy shall
preclude other or further exercise thereof or the exercise of any other right or
remedy.

     18.  Amendments and Modifications.  No amendment to, modification or
waiver of, or consent with respect to any provision of this Security Agreement
shall in any event be effective unless the same shall be in writing and signed
and delivered by the Agent, and then any such amendment, modification, waiver or
consent shall be effective only in the specific instance and for the specific
purpose for which given.








                                  -6-
<PAGE>
     19.  Choice of Law.  This Security Agreement has been delivered at Tulsa,
Oklahoma, and shall be construed in accordance with and governed by the laws of
the State of Oklahoma.

     20.  Severability.  Whenever possible each provision of this Security
Agreement shall be interpreted in such a manner as to be effective and valid
under applicable law, but if any provision of this Security Agreement shall be
prohibited by or invalid under applicable law, such provision shall be
ineffective to the extent of such prohibition or invalidity without invalidating
the remainder of such provision or the remaining provisions of this Security
Agreement.

     21.  Binding Effect.  This Security Agreement shall be binding upon Unit
and its respective successors and assigns, and shall inure to the benefit of the
Agent, the Banks and their respective successors and assigns.

     22.  Financing Statement.  A carbon or photographic copy, or other
reproduction, of this Security Agreement or of any financing statement prepared
or filed with respect hereto is sufficient as a financing statement for all
purposes.

     23.  Prior Security Agreement.  This Security Agreement continues in full
force and effect the terms, provisions and liens and security interests
(including the priorities) of the Prior Security Agreement in all respects,
except only as expressly amended or modified hereby, and for all purposes and
the security interests and liens therein granted are hereby ratified, confirmed
and continued without interruption whatsoever.

     WAIVER OF JURY TRIAL.  BORROWERS, BANKS AND AGENT FULLY,
VOLUNTARILY AND EXPRESSLY WAIVE ANY RIGHT TO A TRIAL BY JURY IN
ANY ACTION OR PROCEEDING TO ENFORCE OR DEFEND ANY RIGHTS UNDER
THIS AGREEMENT OR UNDER ANY AMENDMENT, INSTRUMENT, DOCUMENT OR
AGREEMENT DELIVERED (OR WHICH MAY IN THE FUTURE BE DELIVERED) IN
CONNECTION HEREWITH OR ARISING FROM ANY BANKING RELATIONSHIP
EXISTING IN CONNECTION WITH THIS AGREEMENT, THE NOTE AND/OR THE
SECURITY INSTRUMENTS.  BORROWERS, BANKS AND AGENT AGREE THAT ANY
SUCH ACTION OR PROCEEDING SHALL BE TRIED BEFORE A COURT AND NOT
BEFORE A JURY.

     IN WITNESS WHEREOF, this Security Agreement has been duly executed and
delivered in Tulsa, Oklahoma effective as of the day and year first above
written.

                              "Borrower"

Address for Unit:             UNIT DRILLING COMPANY, an Oklahoma
                               corporation
7130 South Lewis
Tulsa, Oklahoma  74136        By___________________________________
                                John G. Nikkel, President








                                  -7-
<PAGE>
                              "Agent"

                              BANK OF OKLAHOMA, NATIONAL
Address:                       ASSOCIATION

P.O. Box 2300
Tulsa, OK  74192              By_________________________________
                                Pam Schloeder, Vice President


                              "Banks"

                              BANK OF OKLAHOMA, NATIONAL
Address:                       ASSOCIATION

P.O. Box 2300
Tulsa, OK 74192               By_________________________________
                                 Pam Schloeder, Vice President








































                                  -8-
<PAGE>
                              BANKBOSTON, N.A.
Address:

P.O. Box 2016                 By___________________________________
100 Federal Street                Allison Rossi
Boston, MA  02110                 Title_______________________________




















































                                  -9-
<PAGE>
                              NATIONSBANK, N.A.
Address:

P.O. Box 2360                 By________________________________
Tulsa, OK  74101-2360            Glenn A. Elrod
                                 Senior Vice President




















































                                  -10-
<PAGE>
Address:                      LOCAL FEDERAL BANK, FSB

2250 East 73rd
Suite 625                     By____________________________________
Tulsa, Oklahoma 74136            Name: James N. Young, Jr.
                                 Title: Executive Vice-President




















































                                  -11-
























































<PAGE>
                                                                Exhibit 15
                                                                ----------







                                       August 7, 1998


Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549



       RE:  Unit Corporation

            Registration on Form S-8 and S-3



We are aware that our report dated July 28, 1998 on our review of interim
financial information of Unit Corporation for the three and six month periods
ended June 30, 1998 and 1997 and included in the Company's quarterly report on
Form 10-Q for the quarter ended June 30, 1998 is incorporated by reference in
the Company's registration statements on Form S-8 (File No.'s 33-19652, 33-
44103, 33-49724, 33-64323 and 33-53542)and Form S-3 (File No.333-42341).
Pursuant to Rule 436(c) under the Securities Act of 1933, this report should not
be considered a part of the registration statement prepared or certified by us
within the meaning of Sections 7 and 11 of that Act.



                                 PricewaterhouseCoopers  L L P


<TABLE> <S> <C>

















<PAGE>
<ARTICLE> 5
<LEGEND>
The schedule contains summary financial information extracted from the
Consolidated Condensed Financial Statements of Unit Corporation and Subsidiaries
under cover of Form 10-Q for the six months ended June 30, 1998 and is qualified
in its entirety by reference to such financial statements.
</LEGEND>
<CIK> 0000798949
<NAME> UNIT CORPORATION
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                             594
<SECURITIES>                                         0
<RECEIVABLES>                                   14,658<F1>
<ALLOWANCES>                                         0
<INVENTORY>                                          0<F2>
<CURRENT-ASSETS>                                22,165
<PP&E>                                         393,042
<DEPRECIATION>                                 202,033
<TOTAL-ASSETS>                                 219,681
<CURRENT-LIABILITIES>                           22,100
<BONDS>                                              0
                                0
                                          0
<COMMON>                                         5,112
<OTHER-SE>                                     105,992
<TOTAL-LIABILITY-AND-EQUITY>                   219,681
<SALES>                                              0
<TOTAL-REVENUES>                                50,303
<CGS>                                                0
<TOTAL-COSTS>                                   42,221
<OTHER-EXPENSES>                                 2,507
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               2,359
<INCOME-PRETAX>                                  3,216
<INCOME-TAX>                                     1,256
<INCOME-CONTINUING>                              1,960
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,960
<EPS-PRIMARY>                                      .08
<EPS-DILUTED>                                      .08
<FN>
<F1>Accounts Receivable is presented net in the Consolidated Condensed Balance
Sheet.
<F2>Inventory is presented as a portion of Other Current Assets in the
Consolidated Condensed Balance Sheet.
</FN>
        

</TABLE>


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