SECOND AMENDED AND RESTATED CREDIT AGREEMENT
                                       
                                    among

                         QUICKSILVER RESOURCES INC.,
                                 as Borrower,

                              NATIONSBANK, N.A.,
                           as Administrative Agent,

                                     and

           The Financial Institutions Listed on Schedule 1 Hereto, 
                                   as Banks


                                 $200,000,000



                                 dated as of

                                March 1, 1999



                    NATIONSBANC MONTGOMERY SECURITIES LLC,
                    as Sole Lead Arranger and Book Manager

                       PARIBAS, as Documentation Agent


                                       
                               TABLE OF CONTENTS

                                                                        Page No.

                                ARTICLE I
                                     
                        AMENDMENT AND RESTATEMENT
                                     
                                ARTICLE II
                                     
                              TERMS DEFINED
                                     
SECTION 2.1.   Definitions    2
SECTION 2.2.   Accounting Terms and Determinations     25
SECTION 2.3.   Petroleum Terms     25
SECTION 2.4.   Money     25

                               ARTICLE III
                                     
                                THE CREDIT
                                     
SECTION 3.1.   Commitments    25
SECTION 3.2.   Notes     30
SECTION 3.3.   Interest Rates; Payments.     30
SECTION 3.4.   Mandatory Prepayments Resulting From Borrowing Base
               Deficiency.              32
SECTION 3.5.   Voluntary Prepayments.   32
SECTION 3.6.   Voluntary Reduction of Commitments 32
SECTION 3.7.   Termination of Commitments; Final Maturity   32
SECTION 3.8.   Unused Commitment Fee    32
SECTION 3.9.   Agency and other Fees    33

                                ARTICLE IV
                                     
                            GENERAL PROVISIONS
                                     
SECTION 4.1.   Delivery and Endorsement of Notes  33
SECTION 4.2.   General Provisions as to Payments  33

                                ARTICLE V
                                     
                         CHANGE IN CIRCUMSTANCES

                                       i


SECTION 5.1.   Increased Cost and Reduced Return  34
SECTION 5.2.   Limitation on Types of Loans  36
SECTION 5.3.   Illegality     36
SECTION 5.4.   Treatment of Affected Loans   36
SECTION 5.5.   Compensation   37
SECTION 5.6.   Taxes     37
SECTION 5.7.   Discretion of Banks as to Manner of Funding  39

                                ARTICLE VI
                                     
                              BORROWING BASE
                                     
SECTION 6.1.   Reserve Report; Proposed Borrowing Base 39
SECTION 6.2.   Scheduled Redeterminations of the Borrowing Base and
               the Conforming Borrowing Base; Procedures and Standards     39
SECTION 6.3.   Special Redetermination. 40
SECTION 6.4.   Borrowing Base Deficiency     41
SECTION 6.5.        Initial Borrowing Base and Conforming Borrowing Base   41

                               ARTICLE VII
                                     
                        COLLATERAL AND GUARANTEES

SECTION 7.1.   Security  41
SECTION 7.2.   Guarantees     42

                               ARTICLE VIII
                                     
                           CONDITIONS PRECEDENT

SECTION 8.1.   Conditions to Amendment and Restatement and Initial
               Borrowing and Participation in Letter of Credit Exposure    42
SECTION 8.2.   Conditions to Each Borrowing and each Letter of Credit 47
SECTION 8.3.   Materiality of Conditions     47
SECTION 8.4.   Termination of Agreement 47

                                ARTICLE IX
                                     
                      REPRESENTATIONS AND WARRANTIES
                                     
SECTION 9.1.   Existence and Power 48
SECTION 9.2.   Credit Party and Governmental Authorization; Contravention  48
SECTION 9.3.   Binding Effect 48

                                       ii


SECTION 9.4.   Financial Information    49
SECTION 9.5.   Litigation     50
SECTION 9.6.   ERISA     50
SECTION 9.7.   Taxes and Filing of Tax Returns    50
SECTION 9.8.   Ownership of Properties Generally  51
SECTION 9.9.   Mineral   51
SECTION 9.10.  Licenses, Permits, Etc   51
SECTION 9.11.  Compliance with Law 52
SECTION 9.12.  Full Disclosure     52
SECTION 9.13.  Organizational Structure; Nature of Business 52
SECTION 9.14.  Environmental Matters    52
SECTION 9.15.  Burdensome Obligations   53
SECTION 9.16.  Fiscal Year    53
SECTION 9.17.  No Default     53
SECTION 9.18.  Government Regulation    53
SECTION 9.19.  Insider   54
SECTION 9.20.  Gas Balancing Agreements and Advance Payment Contracts 54
SECTION 9.21.  Closing Documents; Management Agreement.     54
SECTION 9.22.  Year 2000 Matters   54

                                ARTICLE X
                                     
                          AFFIRMATIVE COVENANTS

SECTION 10.1.  Information    55
SECTION 10.2.  Business of Borrower     57
SECTION 10.3.  Maintenance of Existence 57
SECTION 10.4.  Title Data     57
SECTION 10.5.  Right of Inspection 57
SECTION 10.6.  Maintenance of Insurance 57
SECTION 10.7.  Payment of Taxes and Claims   58
SECTION 10.8.  Compliance with Laws and Documents 58
SECTION 10.9.  Operation of Properties and Equipment   58
SECTION 10.10. Environmental Law Compliance  59
SECTION 10.11. ERISA Reporting Requirements  59
SECTION 10.12. Additional Documents     60
SECTION 10.13. Environmental Review     60
SECTION 10.14. Required Purchase Contracts   60
SECTION 10.15. Year 2000 Compatibility  60

                                      iii


                                ARTICLE XI
                                     
                            NEGATIVE COVENANTS

SECTION 11.1.  Incurrence of Debt  61
SECTION 11.2.  Restricted Payments 61
SECTION 11.3.  Negative Pledge     61
SECTION 11.4.  Consolidations and Mergers    61
SECTION 11.5.  Asset Dispositions  61
SECTION 11.6.  Amendments to Organizational Documents; Other
               Material Agreements 62
SECTION 11.7.  Use of  Proceeds    62
SECTION 11.8.  Investments    62
SECTION 11.9.  Transactions with Affiliates  62
SECTION 11.10. ERISA.    62
SECTION 11.11. Hedge Transactions  62
SECTION 11.12. Fiscal Year    63
SECTION 11.13. Change in Business  63

                               ARTICLE XII
                                     
                           FINANCIAL COVENANTS

                               ARTICLE XIII
                                     
                                 DEFAULTS

SECTION 13.1.  Events of Default   63

                               ARTICLE XIV
                                     
                                  AGENTS

SECTION 14.1.  Appointment, Powers, and Immunities.    65
SECTION 14.2.  Reliance by Agents  66
SECTION 14.3.  Defaults  66
SECTION 14.4.  Rights as Bank 66
SECTION 14.5.  Indemnification     67
SECTION 14.6.  Non-Reliance on Agents and Other Banks  67
SECTION 14.7.  Resignation of Agents    67

                                      iv


                                ARTICLE XV
                                     
                              MISCELLANEOUS

SECTION 15.1.  Notices   68
SECTION 15.2.  No Waivers     68
SECTION 15.3.  Expenses; Indemnification     68
SECTION 15.4.  Right of Set-off; Adjustments 69
SECTION 15.5.  Amendments and Waivers   70
SECTION 15.6.  Survival  70
SECTION 15.7.  Limitation on Interest   70
SECTION 15.8.  Invalid Provisions  71
SECTION 15.9.  Waiver of Consumer Credit Laws     71
SECTION 15.10. Assignments and Participations     71
SECTION 15.11. TEXAS LAW 73
SECTION 15.12. Consent to Jurisdiction; Waiver of Immunities     73
SECTION 15.13. Counterparts; Effectiveness   73
SECTION 15.14. No Third Party Beneficiaries  74
SECTION 15.15. COMPLETE AGREEMENT  74
SECTION 15.16. WAIVER OF JURY TRIAL     74
SECTION 15.17. Confidentiality     74

                                       v


                                   EXHIBITS

EXHIBIT A      FORM OF PLEDGE AGREEMENT
EXHIBIT B      FORM OF NOTE
EXHIBIT C      FORM OF GUARANTY
EXHIBIT D      FORM OF REQUEST FOR BORROWING
EXHIBIT E      FORM OF REQUEST FOR LETTER OF CREDIT
EXHIBIT F      FORM OF NOTICE OF CONTINUATION OR CONVERSION 
EXHIBIT G      FORM OF CERTIFICATE OF OWNERSHIP INTERESTS
EXHIBIT H      FORM OF CERTIFICATE OF FINANCIAL OFFICER
EXHIBIT I      FORM OF ASSIGNMENT AND ACCEPTANCE AGREEMENT
EXHIBIT J      FORM OF CERTIFICATE OF EFFECTIVENESS


                                  SCHEDULES

SCHEDULE 1  FINANCIAL INSTITUTIONS
SCHEDULE 2  INVESTMENTS
SCHEDULE 3  LITIGATION
SCHEDULE 4  CAPITALIZATION
SCHEDULE 5  ENVIRONMENTAL DISCLOSURE




                                      vi

                                       
                 SECOND AMENDED AND RESTATED CREDIT AGREEMENT


     THIS SECOND AMENDED AND RESTATED CREDIT AGREEMENT (this "AGREEMENT") is 
entered into as of the 1st day of March, 1999, among QUICKSILVER RESOURCES 
INC., a Delaware corporation ("BORROWER"), NATIONSBANK, N.A., successor by 
merger to NationsBank of Texas, N.A., as Administrative Agent 
("ADMINISTRATIVE AGENT"), and the financial institutions listed on SCHEDULE 1 
hereto as Banks (individually a "BANK" and collectively "BANKS").

                             W I T N E S S E T H:

     WHEREAS, Borrower, NationsBank, N.A., successor by merger to NationsBank 
of Texas, N.A., as Agent, and NationsBank, N.A., successor by merger to 
NationsBank of Texas, N.A., as the sole Bank ("NATIONSBANK"), are parties to 
that certain Amended and Restated Credit Agreement dated as of April 9, 1998, 
pursuant to which NationsBank provided certain loans and other extensions of 
credit to Borrower (the "EXISTING QRI/NATIONSBANK CREDIT AGREEMENT"); and

     WHEREAS, MSR Exploration Ltd., a Delaware corporation ("MSR"), Paribas 
(formerly known as Banque Paribas), as Agent and Paribas  ("PARIBAS") and the 
other financial institutions named therein are parties to that certain Credit 
Agreement dated as of October 31, 1997, pursuant to which Paribas and such 
other financial institutions provided a revolving credit facility to MSR in 
the maximum aggregate amount of $25,000,000 (the "MSR/PARIBAS CREDIT 
AGREEMENT"); and

     WHEREAS, immediately prior to the execution of this Agreement, 
NationsBank has entered into Assignment and Acceptance Agreements 
(collectively, the "ASSIGNMENTS") with each of Paribas, Bank One, Texas, N.A. 
("BANK ONE"), and Frost National Bank ("FNB," and together with Paribas and 
Bank One collectively referred to herein as the "NEW BANKS"), pursuant to 
which NationsBank assigned to the New Banks, and each of the New Banks (i) 
acquired from NationsBank a portion of NationsBank's Commitment and a portion 
of the Revolving Loan and Letter of Credit Exposure held by NationsBank under 
and as defined in the Existing QRI/NationsBank Credit Agreement and each of 
the other Loan Papers (as defined in the Existing QRI/NationsBank Credit 
Agreement), (ii) assumed and agreed to perform a portion of NationsBank's 
obligations under the Existing QRI/NationsBank Credit Agreement and the other 
Loan Papers (as defined therein), and (iii) became a party to, and a "Bank" 
under, the Existing QRI/NationsBank Credit Agreement and the other Loan 
Papers (as defined therein); and

     WHEREAS, after giving effect to the Assignments and the amendment and 
restatement of the Existing QRI/NationsBank Credit Agreement pursuant to the 
terms hereof, the Commitment Percentage (as herein defined) of each Bank 
(including NationsBank and each New Bank) hereunder will be as set forth on 
SCHEDULE 1 hereto; and

                                       1


     WHEREAS, pursuant to the Merger Documents (as herein defined), MSR will 
merge with and into Borrower with Borrower being the surviving entity (the 
"MERGER"); and      WHEREAS, pursuant to the terms of the Merger and the 
Merger Documents, Borrower will assume and agree to perform as primary 
obligor, all obligations of MSR under the MSR/Paribas Credit Agreement; and

     WHEREAS, immediately after giving effect to the Assignments and the 
Merger, the parties hereto desire to amend and restate the Existing 
QRI/NationsBank Credit Agreement in the form of this Agreement and Borrower 
desires to obtain Borrowings (as herein defined) (a) to refinance the 
indebtedness under the Existing QRI/NationsBank Credit Agreement, (b) to 
refinance the indebtedness assumed by Borrower under the MSR/Paribas Credit 
Agreement, (c) to increase from $100,000,000 to $200,000,000 the aggregate 
Commitments of Banks, and (d) for other purposes permitted herein; and

     WHEREAS, subject to and upon the terms and conditions herein contained, 
Banks are willing to provide the credit facility described herein; and

     WHEREAS, pursuant to ARTICLE XIV of this Agreement, NationsBank, N.A. 
has been appointed Administrative Agent for Banks hereunder; and

     WHEREAS, pursuant to certain separate agreements among NationsBank, 
N.A., NationsBanc Montgomery Securities LLC ("NMS") and Borrower, NMS has 
been appointed Sole Lead Arranger and Book Manager for the credit facility 
provided herein.

     NOW, THEREFORE, in consideration of the premises, the representations, 
warranties, covenants and agreements contained herein, and other good and 
valuable consideration, the receipt and adequacy of which are hereby 
acknowledged, Borrower, Administrative Agent, and Banks agree as follows:
                                       
                                   1ARTICLE 

            AMENDMENT AND RESTATEMENTARTICLE AMENDMENT AND RESTATEMENT1     

(i)       Subject to  SECTION 8.4 hereof, and  the satisfaction of each 
condition precedent contained in SECTION 8.1 hereof, the satisfaction of 
which shall be evidenced by the execution by Borrower and Administrative 
Agent of the Certificate of Effectiveness (as hereinafter defined), the 
Existing QRI/NationsBank Credit Agreement shall be amended and restated as of 
the Closing Date in the form of this Agreement.

                                       2


1    ARTICLE TERMS DEFINEDARTICLE TERMS DEFINED1  

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

     "ADJUSTED EURODOLLAR RATE" means, for any Eurodollar Loan for any 
Interest Period therefor, the rate per annum (rounded upwards, if necessary, 
to the nearest 1/100 of 1%) determined by Administrative Agent to be equal to 
the quotient obtained by dividing (a) the Eurodollar Rate for such Eurodollar 
Loan for such Interest Period by (b) 1 minus the Reserve Requirement for such 
Eurodollar Loan for such Interest Period.

     "ADMINISTRATIVE AGENT" means NationsBank, N.A. in its capacity as 
administrative agent for Banks hereunder or any successor thereto.

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

     "AFFILIATE" means, as to any Person, any Subsidiary of such Person, or 
any other Person which, directly or indirectly, controls, is controlled by, 
or is under common control with, such Person and, with respect to any Credit 
Party, means, any director, executive officer, general partner or manager of 
such Credit Party and any Person who holds five percent (5%) or more of the 
voting stock, partnership interests, membership interests or other ownership 
interests of such Credit Party.  For the purposes of this definition, 
"control" (including, with correlative meanings, the terms "controlled by" 
and "under common control with"), as used with respect to any Person, shall 
mean the possession, directly or indirectly, of the power to direct or cause 
the direction of the management and policies of such Person, whether through 
the ownership of voting securities, membership interests or partnership 
interests, or by contract or otherwise.  

     "AGENT" means Administrative Agent, Sole Lead Arranger or Book Manager 
and "AGENTS" means Administrative Agent, Sole Lead Arranger and Book Manager, 
collectively.

                                       3


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

     "APPLICABLE ENVIRONMENTAL LAW" means any federal, state or local law, 
common law, ordinance, regulation or policy, as well as order, decree, 
permit, judgment or injunction issued, promulgated, approved, or entered 
thereunder, relating to the environment, health and safety, or Hazardous 
Substances (including, without limitation, the use, handling, transportation, 
production, disposal, discharge or storage thereof) or to industrial hygiene 
or the environmental conditions on, under, or about any real property owned, 
leased or operated at any time by any Credit Party or any real property 
owned, leased or operated by any other party including, without limitation, 
soil, groundwater, and indoor and ambient air conditions.

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

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



    ------------------------------------------------------------
    ------------------------------------------------------------
          Ratio of Outstanding             Applicable Margin for
    Credit to Conforming Borrowing Base     Eurodollar Tranches
    ------------------------------------------------------------
    ------------------------------------------------------------
                                        
             # .50 to 1                           1.125%
    ------------------------------------------------------------
        >.50 to 1 # .75 to 1                      1.375%
    ------------------------------------------------------------
         > .75 to 1 # 1.00                        1.625%
    ------------------------------------------------------------
            > 1.00 to 1                           2.250%
    ------------------------------------------------------------
    ------------------------------------------------------------


     "APPROVED PETROLEUM ENGINEER" means LaRoche Petroleum Consultants, Ltd., 
Albrecht & Associates, Inc. and S. A. Holditch and Associates, Inc., or any 
other reputable firm of independent petroleum engineers as shall be selected 
by Borrower and approved by Required Banks, such approval not to be 
unreasonably withheld.

     "ASSIGNMENT AND ACCEPTANCE AGREEMENT" has the meaning given such term in 
SECTION 15.10(a).

     "ASSIGNMENT OF NOTES AND LIENS" means those certain Assignments of Notes 
and Liens and Amendments to Mortgages to be entered into among Borrower, 
Administrative Agent and 

                                       4


Existing MSR Agent, in form and substance acceptable to Administrative Agent, 
pursuant to which the notes and instruments evidencing all indebtedness 
outstanding under the MSR/Paribas Credit Agreement and all Liens securing 
payment thereof (including, without limitation, the Existing MSR Mortgages) 
shall be assigned to Administrative Agent for the ratable benefit of each 
Bank to secure the Obligations.

     "ASSIGNMENTS" has the meaning assigned to such term in the recitals 
hereto.

     "AUTHORIZED OFFICER" means, as to any Person, its Chief Executive 
Officer, its President, its Chief Financial Officer, any of its Vice 
Presidents, its Treasurer or its corporate Secretary.      "AVAILABILITY" 
means, as of any date, the remainder of (a) the Borrowing Base in effect on 
such date, minus (b) the Outstanding Credit on such date.

     "BANK" means any financial institution reflected on SCHEDULE 1 hereto as 
having a Commitment and its successors and permitted Assignees, and "BANKS" 
shall mean all Banks.

     "BANK ONE" means Bank One, Texas, N.A.

     "BASE RATE" means, for any day, the rate per annum equal to the higher 
of (a) the Federal Funds Rate for such day plus one-half of one percent (.5%) 
and (b) the Prime Rate for such day.  Any change in the Base Rate due to a 
change in the Prime Rate or the Federal Funds Rate shall be effective 
automatically and without notice to Borrower or any Bank on the effective 
date of such change in the Prime Rate or Federal Funds Rate.

     "BASE RATE LOAN" means the portion of the principal of the Loan bearing 
interest with reference to the Base Rate.

     "BOOK MANAGER" means NationsBanc Montgomery Securities LLC in its 
capacity as book manager for the credit facility hereunder or any successor 
thereto.

     "BORROWER" means Quicksilver Resources Inc., a Delaware corporation.

     "BORROWER PLEDGE AGREEMENT" means a Pledge Agreement substantially in 
the form of EXHIBIT A hereto (with applicable conforming changes) to be 
executed by Borrower pursuant to which Borrower shall pledge to 
Administrative Agent, for the ratable benefit of Banks, one-hundred percent 
(100%) of the issued and outstanding Equity of each existing or hereafter 
acquired Subsidiary of Borrower to secure the Obligations.

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



     "BORROWING BASE" means the loan value attributable to certain of 
Borrower's Mineral Interests as determined in accordance with ARTICLE VI 
hereof.

     "BORROWING BASE DEFICIENCY" means, as of any date, the amount, if any, 
by which the Outstanding Credit on such date exceeds the Borrowing Base in 
effect on such date; PROVIDED, THAT, for purposes of determining the 
existence and amount of any Borrowing Base Deficiency, Letter of Credit 
Exposure will not be deemed to be outstanding to the extent it is secured by 
cash in the manner contemplated by SECTION 3.1(b).

     "BORROWING BASE PROPERTIES" means all Mineral Interests evaluated by 
Banks for purposes of establishing the Borrowing Base.  The Borrowing Base 
Properties on the Closing Date are described in the Property Description and 
constitute all of the Mineral Interests described in the Initial Reserve 
Reports.

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

     "CERTIFICATE OF EFFECTIVENESS" means a Certificate of Effectiveness in 
the form of EXHIBIT J attached hereto to be executed by Borrower and 
Administrative Agent upon the satisfaction of each of the conditions 
precedent contained in SECTION 8.1 hereof.

     "CERTIFICATE OF OWNERSHIP INTERESTS" means a Certificate of Ownership 
Interests in the form of EXHIBIT G attached hereto to be executed and 
delivered by an Authorized Officer of Borrower pursuant to SECTION 
8.1(a)(XVI) hereof.

     "CHANGE OF CONTROL" means that, for any reason, the Darden Group fails 
to own and control, directly or indirectly, fifty-one percent (51%) or more 
of the outstanding voting power of the issued and outstanding capital stock 
of every class of Borrower.

     "CLOSING DATE" means the date upon which all of the conditions precedent 
set forth in SECTION 8.1 have been satisfied, and Borrower and Administrative 
Agent have executed and delivered the Certificate of Effectiveness; PROVIDED, 
THAT, in no event shall such date be later than March 31, 1999.

     "CLOSING DOCUMENTS" means the Merger Documents and all other material 
documents, instruments and agreements executed or delivered by Borrower, MSR, 
or any Credit Party in connection with or otherwise pertaining to the Merger 
or the Closing Transactions.

     "CLOSING TRANSACTIONS" means the transactions to occur on the Closing 
Date pursuant to the Closing Documents and this Agreement, including, without 
limitation, (a) the Merger, (b) the termination of the MSR/Paribas Credit 
Agreement, including, without limitation, (i) the refinancing of all Debt of 
MSR under the MSR/Paribas Credit Agreement with proceeds of the 



Loan, (ii) cancellation of all letters of credit outstanding thereunder, and 
(iii) the assignment of all Liens securing the obligations of MSR (including, 
without limitation, the Existing MSR Mortgages) under the MSR/Paribas Credit 
Agreement to Administrative Agent, for the ratable benefit of each Bank, to 
secure the Obligations, (c) the cancellation of the Mercury Pledge Agreement, 
the QELC Pledge Agreement, the Darden Family Pledge Agreements and the 
Facility Guarantees (as each such term is defined in the Existing 
QRI/NationsBank Credit Agreement), and (d) the payment of all fees and 
expenses of Administrative Agent and its Affiliates in connection with the 
credit facility provided herein.

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

     "COLLATERAL ASSIGNMENT" means, collectively, that certain (i) Second 
Amended and Restated Collateral Assignment of Promissory Notes and Contract 
Rights dated as of the Closing Date executed by Borrower in favor of 
Administrative Agent, and (ii) Amended and Restated Collateral Assignment of 
Promissory Notes and Contract Rights dated as of the Closing Date executed by 
Borrower in favor of Administrative Agent, pursuant to which Borrower assigns 
to Administrative Agent and grants Administrative Agent a security interest 
in certain of the Section 29 Documents.

     "COMMITMENT" means, with respect to any Bank, the commitment of such 
Bank to lend its Commitment Percentage of the Total Commitment to Borrower 
pursuant to SECTION 3.1 hereof, as such Commitment may be terminated and 
reduced from time to time in accordance with the provisions hereof.  On the 
Closing Date the amount of each Bank's Commitment is the amount set forth 
opposite such Bank's name on SCHEDULE 1 hereto; PROVIDED, THAT, after giving 
effect to any Assignment and Acceptance Agreement, the Commitment of each 
Bank shall be the amount set forth in the Register maintained by 
Administrative Agent pursuant to SECTION 15.10(b).

     "COMMITMENT PERCENTAGE" means, with respect to each Bank, the Commitment 
Percentage for such Bank set forth on SCHEDULE 1 hereto; PROVIDED, THAT, 
after giving effect to any Assignment and Acceptance Agreement, the 
Commitment of each Bank shall be the amount set forth in the Register 
maintained by Administrative Agent pursuant to SECTION 15.10(b).

     "CONFORMING BORROWING BASE" has the meaning set forth in SECTION 6.1 
hereof.

     "CONSOLIDATED CURRENT ASSETS" means, for any Person at any time, the 
current assets of such Person and its Consolidated Subsidiaries at such time, 
plus, in the case of Borrower, the Availability at such time.

     "CONSOLIDATED CURRENT LIABILITIES" means, for any Person at any time, 
the current liabilities of such Person and its Consolidated Subsidiaries at 
such time, but, in the case of Borrower, excluding current maturities of Long 
Term Debt of Borrower and its Consolidated Subsidiaries outstanding at such 
time.



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

     "CONSUMERS POWER" means Consumers Power Company, a Michigan corporation.

     "CONSUMERS POWER CONTRACT" means that certain Gas Purchase Agreement 
dated October 1, 1994, by and between Mercury, as seller, and Consumers 
Power, as buyer, pursuant to which Consumers Power has agreed to purchase 
certain gas owned or controlled by Mercury.

     "CONTINUE," "CONTINUATION," and "CONTINUED" shall refer to the 
continuation pursuant to SECTION 3.3(c) and/or ARTICLE V hereof of a 
Eurodollar Loan from one Interest Period to the next Interest Period.      
"CONVERT," "CONVERSION," and "CONVERTED" shall refer to a conversion pursuant 
to SECTION 3.3(c) and/or ARTICLE V hereof of one Type of Loan into another 
Type of Loan.

     "CREDIT PARTIES" means, collectively, Borrower and each Subsidiary of 
Borrower, and "CREDIT PARTY" means any one of the foregoing.

     "DARDEN GROUP" means, collectively, Mercury, QELC, Frank Darden, Anne 
Darden Self, Glenn Darden and Thomas Darden and their respective designees, 
heirs and estates.

     "DEBT" means, for any Person at any time, without duplication, (a) all 
obligations of such Person for borrowed money, (b) all obligations of such 
Person evidenced by bonds, debentures, notes or other similar instruments, 
(c) all other indebtedness (including capitalized lease obligations, other 
than usual and customary oil and gas leases) of such Person on which interest 
charges are customarily paid or accrued, (d) all Guarantees by such Person, 
(e) the unfunded or unreimbursed portion of all letters of credit issued for 
the account of such Person, (f) any amount owed by such Person representing 
the deferred purchase price of property or services other than accounts 
payable incurred in the ordinary course of business and in accordance with 
customary trade terms and which have not been outstanding for more than 
ninety (90) days past the invoice date, (g) all obligations of such Person 
secured by a Lien on any property or asset owned or held by that Person 
regardless of whether the indebtedness secured thereby shall have been 
assumed by that Person or is non-recourse to the credit of that Person, and 
(h) all liability of such Person as a general partner of a partnership for 
obligations of such partnership of the nature described in (a) through (g) 
preceding.        "DEFAULT" means any condition or event which constitutes an 
Event of Default or which with the giving of notice, lapse of time or both 
would, unless cured or waived, become an Event of Default.

     "DEFAULT RATE" means, in respect of any principal of the Loan or any 
other amount payable by Borrower under any Loan Paper which is not paid when 
due (whether at stated 



maturity, by acceleration, or otherwise), a rate per annum during the period 
commencing on the due date until such amount is paid in full equal to the sum 
of (i) three percent (3%), plus (ii) the Base Rate as in effect from time to 
time (PROVIDED, THAT if such amount in default is principal of a Eurodollar 
Borrowing and the due date is a day other than the last day of an Interest 
Period therefor, the "DEFAULT RATE" for such principal shall be, for the 
period from and including the due date and to but excluding the last day of 
the Interest Period therefor, (a) three percent (3%), plus (b) the Applicable 
Margin, plus (c) the Eurodollar Rate for such Borrowing for such Interest 
Period as provided in SECTION 3.3 hereof, and thereafter, the rate provided 
for above in this definition).

     "DISTRIBUTION" by any Person, means (a) with respect to any stock issued 
by such Person or any partnership, joint venture, limited liability company, 
membership or other interest of such Person, the retirement, redemption, 
purchase, or other acquisition for value of any such stock or partnership, 
joint venture, limited liability company, membership or other interest, (b) 
the declaration or payment of any dividend or other distribution on or with 
respect to any stock, partnership, joint venture, limited liability company, 
membership or other interest of any Person, and (c) any other payment by such 
Person with respect to such stock, partnership, joint venture, limited 
liability company, membership or other interest of such Person.

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

     "DOMESTIC LENDING OFFICE" means, as to each Bank, (a) its office located 
at its address identified on SCHEDULE 1 hereto as its Domestic Lending 
Office, (b) its office located at its address identified on the Register (as 
defined in SECTION 15.10(b)) as its Domestic Lending Office, or (c) such 
other office as such Bank may hereafter designate as its Domestic Lending 
Office by notice to Borrower and Administrative Agent.

     "ELIGIBLE ASSIGNEE" means (i) a Bank, (ii) an Affiliate of a Bank, and 
(iii) any other Person approved by Administrative Agent and, unless an Event 
of Default has occurred and is continuing at the time any assignment is 
effected in accordance with SECTION 15.10, Borrower, such approval not to be 
unreasonably withheld or delayed by Borrower and such approval to be deemed 
given by Borrower if no objection is received by the assigning Bank and 
Administrative Agent from Borrower within two (2) Domestic Business Days 
after notice of such proposed assignment has been provided by the assigning 
Bank to Borrower; PROVIDED, HOWEVER, that neither Borrower nor an Affiliate 
of Borrower shall qualify as an Eligible Assignee.

     "ENVIRONMENTAL COMPLAINT" means any complaint, summons, citation, 
notice, directive, order, claim, litigation, investigation, proceeding, 
judgment, letter or other communication from any federal, state or municipal 
authority or any other party against any Credit Party involving (a) a 
Hazardous Discharge from, onto or about any real property owned, leased or 
operated at any time by any Credit Party, (b) a Hazardous Discharge caused, 
in whole or in part, by any Credit 



Party or by any Person acting on behalf of or at the instruction of any 
Credit Party, or (c) any violation of any Applicable Environmental Law by any 
Credit Party.

     "EQUITY" means shares of capital stock or a partnership, profits, 
capital, member or other equity interest, or options, warrants or any other 
rights to substitute for or otherwise acquire the capital stock or a 
partnership, profits, capital, member or other equity interest of any Credit 
Party.

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

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

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

     "EURODOLLAR LENDING OFFICE" means, as to each Bank, (a) its office, 
branch or affiliate located at its address identified on SCHEDULE 1 hereto as 
its Eurodollar Lending Office, (b) its office, branch or affiliate located at 
its address identified on the Register (as defined in SECTION 15.10(b)) as  
its Eurodollar Lending Office, or (c) such other office, branch or affiliate 
of such Bank as it may hereafter designate as its Eurodollar Lending Office 
by notice to Borrower and Administrative Agent.

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

     "EURODOLLAR RATE" means, for any Loan which is the subject of a 
Eurodollar Tranche for any Interest Period therefor, the rate per annum 
(rounded upwards, if necessary, to the nearest 1/100 of 1%) appearing on 
Telerate Page 3750 (or any successor page) as the London interbank offered 
rate for deposits in Dollars at approximately 11:00 a.m. (London time) two 
(2) Eurodollar Business Days prior to the first day of such Interest Period 
for a term comparable to such Interest Period. If for any reason such rate is 
not available, the term "EURODOLLAR RATE" shall mean, for the principal 
amount of the Loan which is the subject of a Eurodollar Tranche for any 
Interest Period therefor, the rate per annum (rounded upwards, if necessary, 
to the nearest 1/100 of 1%) appearing on Reuters Screen LIBO Page as the 
London interbank offered rate for deposits in Dollars at approximately 11:00 
a.m. (London time) two (2) Eurodollar Business Days prior to the first day of 
such Interest Period for a term comparable to such Interest Period; PROVIDED, 
HOWEVER, if more than one rate is specified on Reuters Screen LIBO Page, the 
applicable rate shall be the arithmetic mean of all such rates (rounded 
upwards, if necessary, to the nearest 1/100 of 1%).  

     "EVENTS OF DEFAULT" has the meaning set forth in SECTION 13.1.



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

     "EXISTING CREDIT AGREEMENTS" means the Existing QRI/NationsBank Credit 
Agreement and the MSR/Paribas Credit Agreement.

     "EXISTING MSR AGENT" means Paribas, as Agent under the MSR/Paribas 
Credit Agreement.

     "EXISTING MSR MINERAL INTERESTS" means the Mineral Interests owned by 
MSR or its Subsidiaries on the Closing Date prior to giving effect to the 
Closing Transactions.

     "EXISTING MSR MORTGAGES" means the mortgages, deeds of trust, security 
agreements, assignments, pledges and other documents, instruments and 
agreements described in each of the Assignments of Notes and Liens, which 
establish Liens on certain of the Existing MSR Mineral Interests to secure 
MSR's obligations under the MSR/Paribas Credit Agreement.

     "EXISTING QRI/NATIONSBANK CREDIT AGREEMENT" has the meaning assigned to 
such term in the recitals hereto.

     "FEDERAL FUNDS RATE" means, for any day, the rate per annum (rounded 
upwards, if necessary, to the nearest 1/100 of 1%) equal to the weighted 
average of the rates on overnight federal funds transactions with members of 
the Federal Reserve System arranged by federal funds brokers on such day, as 
published by the Federal Reserve Bank of New York on the Domestic Business 
Day next succeeding such day; PROVIDED THAT (a) if the day for which such 
rate is to be determined is not a Domestic Business Day, the Federal Funds 
Rate for such day shall be such rate on such transactions on the next 
preceding Domestic Business Day as so published on the next succeeding 
Domestic Business Day, and (b) if such rate is not so published on such next 
succeeding Domestic Business Day, the Federal Funds Rate for any day shall be 
the average rate charged to Administrative Agent on such day on such 
transactions as determined by Administrative Agent.

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

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

     "FISCAL YEAR" means a twelve (12) month period ending December 31.



     "FNB" means Frost National Bank.

     "GAAP" means those generally accepted accounting principles and 
practices which are recognized as such by the American Institute of Certified 
Public Accountants acting through its Accounting Principles Board or by the 
Financial Accounting Standards Board or through other appropriate boards or 
committees thereof and which are consistently applied for all periods after 
the Closing Date so as to properly reflect the financial condition, and the 
results of operations and changes in financial position, of a Person and its 
Consolidated Subsidiaries, except that any accounting principle or practice 
required to be changed by the said Accounting Principles Board or Financial 
Accounting Standards Board (or other appropriate board or committee of the 
said Boards) in order to continue as a generally accepted accounting 
principle or practice may be so changed. 

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

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

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

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

     "HAZARDOUS SUBSTANCE" means any pollutant, toxic substance, hazardous 
waste, compound, element or chemical that is defined as hazardous, toxic, 
noxious, dangerous or infectious pursuant to any Applicable Environmental Law 
or which is otherwise regulated by any 



Applicable Environmental Law or is required to be investigated and/or 
remediated by or pursuant to any Applicable Environmental Law.

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

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

     "INITIAL BORROWING BASE" means a Borrowing Base in the amount of 
$85,000,000, which shall be in effect during the period commencing on the 
Closing Date and continuing until the first Redetermination after the Closing 
Date.

     "INITIAL CONFORMING BORROWING BASE" means a Conforming Borrowing Base in 
the amount of $75,000,000, which shall be in effect during the period 
commencing on the Closing Date and continuing until the first Redetermination 
after the Closing Date.

     "INITIAL RESERVE REPORTS" means the following reserve reports which 
contain an evaluation of the Borrowing Base Properties:  (a) reserve report 
dated as of July 1, 1998 prepared by LaRoche Petroleum Consultants, Ltd., (b) 
reserve report dated August 1, 1997 prepared by Albrecht & Associates, Inc., 
(c) reserve report dated as of January 1, 1998 prepared by S. A. Holditch and 
Associates, Inc. (with respect to certain Mineral Interests owned by QELC 
prior to the Closing Date under and as defined in the Existing 
QRI/NationsBank Credit Agreement), and (d) reserve report dated as of January 
1, 1998 prepared by S. A. Holditch and Associates, Inc. (with respect to 
certain Mineral Interests owned by MGP prior to the Closing Date under and as 
defined in the Existing QRI/NationsBank Credit Agreement).

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



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

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

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

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

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

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

     "LENDING OFFICE" means, as to any Bank, its Domestic Lending Office or 
its Eurodollar Lending Office, as the context may require.  

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

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





     -----------------------------------------------------------------
     -----------------------------------------------------------------
             Ratio of Outstanding                  Per Annum Letter of 
     Credit to Conforming Borrowing Base                Credit Fee
     -----------------------------------------------------------------
     -----------------------------------------------------------------
                                                
                 # .50 to 1                               1.125%
     -----------------------------------------------------------------
             > .50 to 1 # .75 to                          1.375%
     -----------------------------------------------------------------
              > .75 to 1 # 1.00                           1.625%
     -----------------------------------------------------------------
                 > 1.00 to 1                              2.250%
     -----------------------------------------------------------------
     -----------------------------------------------------------------


     "LETTER OF CREDIT FRONTING FEE" means, with respect to any Letter of 
Credit issued hereunder, a fee equal to one hundred twenty five one 
thousandths of one percent (.125%) per annum of the stated amount of such 
Letter of Credit.

     "LETTERS OF CREDIT" means letters of credit issued for the account of 
Borrower pursuant to SECTION 3.1(b).

     "LIEN" means, with respect to any asset, any mortgage, lien, pledge, 
charge, security interest or encumbrance of any kind in respect of such 
asset. For the purposes of this Agreement, Borrower and its Subsidiaries 
shall be deemed to own subject to a Lien any asset which is acquired or held 
subject to the interest of a vendor or lessor under any conditional sale 
agreement, capital lease or other title retention agreement relating to such 
asset.

     "LOAN" means the revolving credit loan in an amount outstanding at any 
time not to exceed the amount of the Total Commitment then in effect less the 
amount of the Letter of Credit Exposure then outstanding to be made by Banks 
to Borrower in accordance with SECTION 3.1 hereof.  The Loan may be comprised 
of the Base Rate Loan and one or more Eurodollar Loans as Borrower may select 
in a Request for Borrowing or a Notice of Continuation and Conversion.      
"LOAN PAPERS" means this Agreement, the Notes, any Subsidiary Guaranty (which 
may hereafter be executed), all Mortgages now or at any time hereafter 
delivered pursuant to SECTION 7.1, the Collateral Assignments, any Borrower 
Pledge Agreement (which may hereafter be executed), any Subsidiary Pledge 
Agreement (which may hereafter be executed), the Assignments of Notes and 
Liens, and all other certificates, documents or instruments delivered in 
connection with this Agreement, as the foregoing may be amended from time to 
time.

     "LONG TERM DEBT" means Debt which matures more than one year from the 
date it is incurred, or which can be extended at the option of the obligor(s) 
to a date more than one year from the date it is incurred.

     "MANAGEMENT AGREEMENT" means that certain Management Agreement dated 
September 1, 1998, to be effective on the Closing Date, by and between 
Mercury and Borrower, pursuant to which Mercury shall operate all of 
Borrower's Mineral Interests and provide certain general and administrative 
services necessary for the operation of Borrower's business and properties. 



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

     "MARGIN STOCK" means "margin stock" as defined in Regulation U.

     "MATERIAL ADVERSE CHANGE" means any circumstance or event that has had 
or would reasonably be expected to have (a) a material and adverse effect on 
the financial condition, business operations, prospects, properties or assets 
of any Credit Party, (b) an adverse effect on (i) the validity and 
enforceability of any Loan Paper, or (ii) the perfection or priority of any 
Lien purported to be created thereby, or (c) a material adverse effect on the 
right or ability of any Credit Party to fully, completely and timely pay and 
perform its obligations under the Loan Papers.

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

     "MATERIAL GAS IMBALANCE" means, with respect to all Gas Balancing 
Agreements to which any Credit Party is a party or by which any Mineral 
Interest owned by any Credit Party is bound, a net negative gas imbalance to 
any Credit Party in excess of $250,000.

     "MAXIMUM LAWFUL RATE" means, for each Bank, the maximum rate (or, if the 
context so permits or requires, an amount calculated at such rate) of 
interest which, at the time in question would not cause the interest charged 
on the portion of the Loan owed to such Bank at such time to exceed the 
maximum amount which such Bank would be allowed to contract for, charge, 
take, reserve, or receive under applicable Laws after taking into account, to 
the extent required by applicable Laws, any and all relevant payments or 
charges under the Loan Papers.  To the extent the Laws of the State of Texas 
are applicable for purposes of determining the "MAXIMUM LAWFUL RATE," such 
term shall mean the "indicated rate ceiling" from time to time in effect 
under Chapter 1D of the Texas Credit Title, Revised Civil Statutes of Texas, 
1925, as amended, substituted for or restated, or, if permitted by applicable 
Law and effective upon the giving of the notices required by such Chapter 1D 
(or effective upon any other date otherwise specified by applicable Law), the 
"quarterly ceiling" or "annualized ceiling" from time to time in effect under 
such Chapter 1D, whichever Administrative Agent (with the approval of 
Required Banks) shall elect to substitute for the "indicated rate ceiling," 
and VICE VERSA, each such substitution to have the effect provided in such 
Chapter 1D, and Administrative Agent (with the approval of Required Banks) 
shall be entitled to make such election from time to time and one or more 
times and, without notice to Borrower, to leave any such substitute rate in 
effect for subsequent periods in accordance with subsection (h)(1) of such 
Chapter 1D.



     "MERCURY" means Mercury Exploration Company, a Texas corporation.

     "MERGER" means the merger of MSR with and into Borrower pursuant to, and 
in accordance with, the Merger Agreement and the Merger Certificate, with 
Borrower being the surviving entity.

     "MERGER AGREEMENT" means that certain Agreement and Plan of Merger and 
Reorganization dated as of September 1, 1998, by and between Borrower and 
MSR, as amended by that certain First Amendment to Agreement and Plan of 
Merger and Reorganization dated as of January 27, 1999, by and between 
Borrower and MSR.

     "MERGER CERTIFICATE" means that certain Certificate of Merger to be 
filed on the Closing Date with the Secretary of State of Delaware, and 
certified copies of which shall subsequently be filed in such jurisdictions 
as Administrative Agent shall require.

     "MERGER DOCUMENTS" means, collectively, (a) the Merger Agreement, (b) 
the Merger Certificate, and (c) all other material documents, instruments and 
agreements executed or delivered by any Credit Party pursuant to the Merger 
Agreement, the Merger Certificate or the Merger.

     "MGP" means Michigan Gas Partners, Limited Partnership, formerly a Texas 
limited partnership prior to its merger with and into Borrower.

     "MINERAL INTERESTS" means rights, estates, titles, and interests in and 
to oil and gas leases and any oil and gas interests, royalty and overriding 
royalty interest, production payment, net profits interests, oil and gas fee 
interests, and other rights therein, including, without limitation, any 
reversionary or carried interests relating to the foregoing, together with 
rights, titles, and interests created by or arising under the terms of any 
unitization, communization, and pooling agreements or arrangements, and all 
properties, rights and interests covered thereby, whether arising by 
contract, by order, or by operation of Laws, which now or hereafter include 
all or any part of the foregoing without limiting the foregoing, in the case 
of Borrower, "MINERAL INTERESTS" also includes all rights of Borrower under 
the Section 29 Documents.

     "MONTHLY DATE" means the fifteenth day of each calendar month.

     "MORTGAGES" means all mortgages, deeds of trusts, amendments to 
mortgages, security agreements, amendments to security agreements, 
assignments of production, amendments to assignments of production, pledge 
agreements, collateral mortgages, collateral chattel mortgages, collateral 
assignments, financing statements and other documents, instruments and 
agreements evidencing, creating, perfecting or otherwise establishing the 
Liens required by SECTION 7.1 hereof.  All Mortgages shall be in form and 
substance satisfactory to Administrative Agent in its sole discretion.



     "MSR" means MSR Exploration Ltd., a Delaware corporation, and which 
pursuant to, and upon the effective date of, the Merger, will be merged with 
and into Borrower with Borrower being the surviving entity.

     "MSR/PARIBAS CREDIT AGREEMENT" has the meaning assigned to such term in 
the recitals hereto.

     "NATIONSBANK" means NationsBank, N.A., a national banking association, 
in its capacity as a Bank.

     "NEW BANK" means Paribas, Bank One or FNB, and "NEW BANKS" means 
Paribas, Bank One and FNB, collectively.

     "NMS" means NationsBank Montgomery Securities LLC.

     "NON-RECOURSE DEBT" means indebtedness (a) secured solely by the assets 
acquired with the proceeds of such indebtedness, (b) with respect to which no 
Credit Party shall have any liability for repayment beyond the assets 
pledged, and (c) with respect to which Borrower has delivered to Banks an 
opinion in a form satisfactory to Required Banks of counsel acceptable to 
Administrative Agent stating that such indebtedness meets the criteria set 
forth in (a) and (b) preceding.

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

     "NOTICE OF CONTINUATION OR CONVERSION" has the meaning set forth in 
SECTION 3.3(c).

     "OBLIGATIONS" means all present and future indebtedness, obligations and 
liabilities, and all renewals and extensions thereof, or any part thereof, of 
each Credit Party to Administrative Agent or to any Bank or any Affiliate of 
any Bank arising pursuant to the Loan Papers or pursuant to any Hedge 
Transaction entered into with any Bank or any Affiliate of any Bank, and all 
interest accrued thereon and costs, expenses, and attorneys' fees incurred in 
the enforcement or collection thereof, regardless of whether such 
indebtedness, obligations and liabilities are direct, indirect, fixed, 
contingent, liquidated, unliquidated, joint, several or joint and several.    
  "OIL & GAS HEDGE TRANSACTION" means a Hedge Transaction pursuant to which 
any Person hedges the price to be received by it for future production of 
Hydrocarbons.

     "OUTSTANDING CREDIT" means, on any date, the sum of (a) the aggregate 
outstanding Letter of Credit Exposure on such date, including the Letter of 
Credit Exposure attributable to Letters 



of Credit to be issued on such date, plus (b) the aggregate outstanding 
principal balance of the Loan on such date, including the amount of any 
Borrowing to be made on such date.

     "PARIBAS" means Paribas in its capacity as a Bank.

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

     "PERMITTED ENCUMBRANCES" means with respect to any asset: 

          (a)  Liens (if any) securing the Notes in favor of Banks; 

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

          (c)  inchoate statutory or operators' Liens securing obligations for
labor, services, materials and supplies furnished to Mineral Interests which are
not delinquent (except to the extent permitted by SECTION 10.7);

          (d)  mechanic's, materialmen's, warehouseman's, journeyman's and
carrier's Liens and other similar Liens arising by operation of Law in the
ordinary course of business which are not delinquent (except to the extent
permitted by SECTION 10.7);

          (e)  Liens for Taxes or assessments not yet due or not yet delinquent,
or, if delinquent, that are being contested in good faith in the normal course
of business by appropriate action, as permitted by SECTION 10.7; 

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

          (g)  the Section 29 Mortgages; and

          (h)  the TCW Royalty Documents.

     "PERMITTED INVESTMENTS"  means (a) readily marketable direct obligations 
of the United States of America (or investments in mutual funds or similar 
funds which invest solely in such 



obligations), (b) fully insured time deposits and certificates of deposit 
with maturities of one year or less of any commercial bank operating in the 
United States having capital and surplus in excess of $500,000,000, (c) 
commercial paper of a domestic issuer if at the time of purchase such paper 
is rated in one of the two highest ratings categories of Standard and Poor's 
Corporation or Moody's Investors Service, (d) Investments described on 
SCHEDULE 2 hereto, and (e) other Investments; PROVIDED THAT, the aggregate 
amount of all other Investments made pursuant to this clause (e) outstanding 
at any time shall not exceed $500,000 (measured on a cost basis).

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

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

     "PRIME RATE" means the per annum rate of interest established from time 
to time by NationsBank as its prime rate, which rate may not be the lowest 
rate of interest charged by NationsBank to its customers.

     "PROPERTY DESCRIPTION" means the legal description of Mineral Interests 
attached to the Certificate of Ownership Interests.

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

     "PROVED NONPRODUCING MINERAL INTERESTS" means all Mineral Interests 
which constitute proved developed nonproducing reserves.

     "PROVED PRODUCING MINERAL INTERESTS" means all Mineral Interests which 
constitute proved developed producing reserves.

     "PROVED UNDEVELOPED MINERAL INTERESTS" means all Mineral Interests which 
constitute proved undeveloped reserves.

     "QELC" means Quicksilver Energy, L.C., a Michigan limited liability 
company.

     "QUARTERLY DATE" means the last day of each March, June, September and
December.



     "RECOGNIZED VALUE" means, with respect to Mineral Interests, the 
discounted present value of the estimated net cash flow to be realized from 
the production of Hydrocarbons from such Mineral Interests as determined by 
NationsBank for purposes of determining the portion of the Borrowing Base 
which it attributes to such Mineral Interests in accordance with ARTICLE VI 
hereof.

     "REDETERMINATION" means (i) any Scheduled Redetermination, or (ii) any 
Special Redetermination.

     "REDETERMINATION DATE" means (a) each June 1 and December 1, commencing 
June 1, 1999, and (b) with respect to any Special Redetermination, the first 
day of the first month which is not less than twenty (20) Domestic Business 
Days following the date of a request for a Special Redetermination.

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

     "REQUEST FOR BORROWING" has the meaning set forth in SECTION 3.1(d).

     "REQUEST FOR LETTER OF CREDIT" has the meaning set forth in SECTION 
3.1(e).

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

     "REQUIRED RESERVE VALUE" means Proved Mineral Interests that have a 
Recognized Value of not less than eighty percent (80%) of the Recognized 
Value of all Proved Mineral Interests held by Borrower and its Subsidiaries.

     "RESERVE REPORT" means an unsuperseded engineering analysis of the 
Mineral Interests owned by Borrower, in form and substance reasonably 
acceptable to Required Banks, prepared in accordance with customary and 
prudent practices in the petroleum engineering industry and Financial 
Accounting Standards Board Statement 69.  Each Reserve Report required to be 
delivered by March 31 of each year pursuant to SECTION 6.1 shall be prepared 
by the Approved Petroleum Engineer.  Each other Reserve Report shall be 
prepared by Borrower's in-house staff.  Notwithstanding the foregoing, in 
connection with any Special Redetermination requested by Borrower, the 
Reserve Report shall be in form and scope mutually acceptable to Borrower and 
Required Banks.  Until superseded, each of the Initial Reserve Reports shall 
be considered a Reserve Report.

     "RESERVE REQUIREMENT" means, at any time, the maximum rate at which 
reserves (including, without limitation, any marginal, special, supplemental, 
or emergency reserves) are required to be maintained under regulations issued 
from time to time by the Board of Governors of the Federal Reserve System (or 
any successor) by member banks of the Federal Reserve 



System against in the case of Eurodollar Loans, "Eurocurrency liabilities" 
(as such term is used in Regulation D).  Without limiting the effect of the 
foregoing, the Reserve Requirement shall reflect any other reserves required 
to be maintained by such member banks with respect to (i) any category of 
liabilities which includes deposits by reference to which the Adjusted 
Eurodollar Rate is to be determined, or (ii) any category of extensions of 
credit or other assets which include Eurodollar Loans.  The Adjusted 
Eurodollar Rate shall be adjusted automatically on and as of the effective 
date of any change in the Reserve Requirement.

     "RESTRICTED PAYMENT" means, with respect to any Person, (a) any 
Distribution by such Person, or (b) the retirement, redemption or prepayment 
prior to scheduled maturity by such Person or any  Affiliate of such Person 
of any Debt of such Person.

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

     "SCHEDULED REDETERMINATION" means any Redetermination of the Borrowing 
Base pursuant to SECTION 6.2.

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

     "SECTION 29 DOCUMENTS" means each of the following documents, 
instruments and agreements:

          (a)  Assignment, dated as of December 1, 1997, by and between Mercury,
     as assignor, and MA Gas LLC ("MAG"), as assignee, and recorded in the
     county records of (i) Antrim County, Michigan, December 23, 1997, under
     Liber 477, Page 1232, (ii) Crawford County, Michigan, December 23, 1997,
     under Liber 444, Page 01, (iii) Montmorency County, Michigan, December 22,
     1997, under Liber 405, Page 01, and (iv) Otsego County, Michigan, December
     22, 1997, under Liber 662, Page 579;

          (b) Assignment by and between Mercury, as assignor, and Borrower, as
     assignee, and recorded in the county records of (i) Antrim County,
     Michigan, April 15, 1998, under Liber 485, Page 1046, and Liber 485,
     Page 1087, (ii) Crawford County, Michigan, April 15, 1998, under Liber 451,
     Page 251, (iii) Montmorency County, Michigan, April 15, 1998, under
     Liber 408, Page 0008, and (iv) Otsego County, Michigan, April 15, 1998,
     under Liber 675, Page 217;

          (c)  Partial Assignment of Reversionary Interest, dated effective as
     of December 1, 1997, by and between Borrower, as assignor, and MAG, as
     assignee, and recorded in the county records of Antrim, Crawford,
     Montmorency and Otsego Counties, Michigan;



          (d)  Conveyance of Production Payment, dated as of December 1, 1997,
     by and between MAG, as assignor, and Mercury, as assignee, and recorded in
     the county records of (i) Antrim County, Michigan, December 23, 1997, under
     Liber 477, Page 1273, (ii) Crawford County, Michigan, December 23, 1997,
     under Liber 444, Page 42, (iii) Montmorency County, Michigan, December 22,
     1997, under Liber 405, Page 42, and (iv) Otsego County, Michigan, December
     22, 1997, under Liber 662, Page 620;

          (e)  Amendment to Conveyance of Production, dated effective as of
     December 1, 1997, by and between MAG, as assignor, and Borrower, as
     assignee, and recorded in the county records of Antrim, Crawford,
     Montmorency and Otsego Counties, Michigan;

          (f)  Mortgage, dated as of December 1, 1997, by and between MAG, as
     mortgagor, and Mercury, as mortgagee, and recorded in the county records of
     (i) Antrim County, Michigan, December 23, 1997, under Liber 477, Page 1413,
     (ii) Crawford County, Michigan, December 23, 1997, under Liber 444, Page
     182, (iii) Montmorency County, Michigan, December 22, 1997, under Liber
     134, Page 528, and (iv) Otsego County, Michigan, December 22, 1997, under
     Liber 662, Page 760;

          (g)  Assignment, dated as of December 1, 1997 by and between MGP, as
     assignor, and MGP Gas L.L.C. ("MGPG"), as assignee, and recorded in the
     county records of (i) Antrim County, Michigan, December 23, 1997, under
     Liber 478, Page 1, and (ii) Otsego County, Michigan, December 22, 1997,
     under Liber 662, Page 802;

          (h)  Partial Assignment of Reversionary Interest, dated effective as
     of December 1, 1997, by and between Borrower, as assignor, and MGPG, as
     assignee, and recorded in the county records of Antrim and Otsego Counties,
     Michigan;

          (i)  Conveyance of Production Payment, dated as of December 1, 1997,
     by and between MGPG, as assignor, and MGP, as assignee, and recorded in the
     county records of (i) Antrim County, Michigan, December 23, 1997, under
     Liber 478, Page 9, and (ii) Otsego County, Michigan, December 22, 1997,
     under Liber 662, Page 810;

          (j)  Amendment to Conveyance of Production Payment, dated effective as
     of December 1, 1997, by and between MGPG, as assignor, and Borrower, as
     assignee, and recorded in the county records of Antrim and Otsego Counties,
     Michigan;

          (k)  Mortgage, dated as of December 1, 1997, by and between MGPG, as
     mortgagor, and MGP, as mortgagee, and recorded in the county records of (i)
     Antrim County, Michigan, December 23, 1997, under Liber 478, Page 37, and
     (ii) Otsego County, Michigan, December 22, 1997, under Liber 662, Page 838;



          (l)  Purchase and Sale Agreement, dated as of December 1, 1997, by and
     between Mercury, as Seller, and MAG, as buyer;

          (m)  Credit Payment Note, dated December 1, 1997, executed by MAG, as
     maker, payable to the order of Mercury, as payee;

          (n)  Fixed Payment Note, dated December 1, 1997, executed by MAG, as
     maker, payable to the order of Mercury, as payee, in the original principal
     amount of $5,092,721;

          (o)  Assignment of Enforcement Rights, dated effective December 1,
     1997, by and between MAG and Mercury, and acknowledged and consented to by
     State Street and Antrim;

          (p)  Management Agreement, dated as of December 1, 1997, by and
     between MAG and Mercury, as manager;

          (q)  Purchase and Sale Agreement, dated as of December 1, 1997, by and
     between MGP, as seller, and MGPG, as buyer;

          (r)  Credit Payment Note, dated December 1, 1997, executed by MGPG, as
     maker, payable to the order of MGP, as payee;

          (s)  Fixed Payment Note, dated December 1, 1997, executed by MGPG, as
     maker, payable to the order of MGP, as payee, in the original principal
     amount of $2,017,373;

          (t)  Assignment of Enforcement Rights, dated effective December 1,
     1997, by and between MGPG and MGP, and acknowledged and consented to by
     State Street and Antrim; and

          (u)  Management Agreement, dated as of December 1, 1997, by and
     between MGPG and MGP, as manager.

     "SECTION 29 MORTGAGES" means each of the following documents, instruments
and agreements:

          (a)  Mortgage, dated as of December 1, 1997, by and between Mercury,
     as mortgagor, and MAG, as mortgagee, and recorded in the county records of
     (i) Antrim County, Michigan, December 23, 1997, under Liber 477, Page 1370,
     (ii) Crawford County, Michigan, December 23, 1997, under Liber 444, Page
     139; (iii) of Montmorency County, Michigan, December 22, 1997, under Liber
     134, Page 485; and (iv) Otsego County, Michigan, December 22, 1997, under
     Liber 662, Page 717; and



          (b)  Mortgage, dated as of December 1, 1997, by and between MGPG, as
     mortgagor, and MGP, as mortgagee, and recorded in the county records of (i)
     Antrim County, Michigan, December 23, 1997, under Liber 478, Page 37; and
     (ii) Otsego County, Michigan, December 22, 1997, under Liber 662, Page 838.

     "SPECIAL REDETERMINATION" means any Redetermination of the Borrowing 
Base pursuant to SECTION 6.3.

     "SOLE LEAD ARRANGER" means NationsBank Montgomery Securities LLC in its 
capacity as sole lead arranger for the credit facility hereunder or any 
successor thereto.

     "SUBSIDIARY" means, for any Person, any corporation or other entity of 
which securities or other ownership interests having ordinary voting power to 
elect a majority of the board of directors or other persons performing 
similar functions (including that of a general partner) are at the time 
directly or indirectly owned, collectively, by such Person and any 
Subsidiaries of such Person.  The term Subsidiary shall include Subsidiaries 
of Subsidiaries (and so on).

     "SUBSIDIARY GUARANTY" means a Guaranty substantially in the form of 
EXHIBIT C hereto to be executed by each existing and future Subsidiary of 
Borrower in favor of Banks pursuant to which each Subsidiary of Borrower 
guaranties payment and performance in full of the Obligations.

     "SUBSIDIARY PLEDGE AGREEMENT" means a Pledge Agreement substantially in 
the form of EXHIBIT A attached hereto (with applicable conforming changes) to 
be executed by each existing and future Subsidiary of Borrower (for purposes 
of this definition and SECTION 7.1(d) hereof, such Subsidiary is referred to 
herein and therein as a "FIRST TIER SUBSIDIARY "), pursuant to which such 
First Tier Subsidiary shall pledge to Administrative Agent, for the ratable 
benefit of Banks, one hundred percent (100%) of the issued and outstanding 
Equity of each existing or hereafter created Subsidiary of such First Tier 
Subsidiary to secure the Obligations.

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

     "TCW ROYALTY DOCUMENTS" means, collectively, (a) the Royalty Agreement 
dated November 14, 1996 by and between Borrower and TCW Portfolio No. 1555 DR 
V Sub-Custody Partnership, L.P., as amended by a First Amendment to Royalty 
Agreement dated as of April 9, 1998, and (b) the Conveyance of Adjustable 
Overriding Royalty Interest dated November 14, 1996 granted by Borrower to 
TCW Portfolio No. 1555 DR V Sub-Custody Partnership, L.P., as amended by an 
Amendment to Conveyance of Overriding Royalty Interest dated as of April 9, 
1998.



     "TERMINATION DATE" means March 4, 2004.

     "TOTAL COMMITMENT" means the Commitments of all Banks in an initial 
aggregate amount of $200,000,000 as such amount may be reduced from time to 
time pursuant to SECTION 3.6.

     "TRANCHE" means the Base Rate Loan or a Eurodollar Loan and "TRANCHES"
means the Base Rate Loan or Eurodollar Loans or any combination thereof.

     "TYPE" means with reference to a Loan, the characterization of such Loan as
the Base Rate Loan or a Eurodollar Loan based on the method by which the accrual
of interest on such Tranche is calculated.

     "UNUSED COMMITMENT FEE PERCENTAGE" means three hundred seventy-five one 
thousandths of one percent (.375%) per annum.

1.1.      SECTION ACCOUNTING TERMS AND DETERMINATIONS . Unless otherwise
specified herein, all accounting terms used herein shall be interpreted, all
accounting determinations hereunder shall be made, and all financial statements
required to be delivered hereunder shall be prepared in accordance with GAAP,
applied on a basis consistent with the most recent audited consolidated
financial statements of Borrower and its Consolidated Subsidiaries delivered to
Banks prior to the date hereof except for changes concurred in by Borrower's
independent certified public accountants and which are disclosed to
Administrative Agent on the next date on which financial statements are required
to be delivered to Banks pursuant to SECTION 10.1.
1.2. 
1.3.      SECTION PETROLEUM TERMS .  As used herein, the terms "PROVED
RESERVES," "PROVED DEVELOPED RESERVES," "PROVED DEVELOPED PRODUCING RESERVES,"
"PROVED DEVELOPED NONPRODUCING RESERVES," and "PROVED UNDEVELOPED RESERVES" have
the meaning given such terms from time to time and at the time in question by
the Society of Petroleum Engineers of the American Institute of Mining
Engineers.
1.4. 
1.5.      SECTION MONEY .  Unless expressly stipulated otherwise, all references
herein to "DOLLARS," "MONEY," "FUNDS," "PAYMENTS," "PREPAYMENTS" or other
similar financial or monetary terms, are references to  currency of the United
States of America.
1.6. 


                                       
                                   1ARTICLE
                                  THE CREDIT
                                       1
(a)       SECTION COMMITMENTS .   Each Bank severally agrees, subject to
SECTIONS 3.1(c), 8.1, 8.2 and 8.4 and the other terms and conditions set forth
in this Agreement, to lend to Borrower from time to time prior to the
Termination Date amounts requested by Borrower not to exceed in the aggregate at
any one time outstanding, the amount of such Bank's Commitment reduced by an
amount equal to such Bank's Letter of Credit Exposure.  Each Borrowing shall be
in an aggregate principal amount of $1,000,000 or any larger integral multiple
of $100,000 (except that any Base Rate Borrowing may be in an amount equal to
the Availability at such time), and (ii) shall be made from Banks ratably in
accordance with their respective Commitment Percentages.  Subject to the
foregoing limitations and the other provisions of this Agreement, prior to the
Termination Date Borrower may borrow under this SECTION 3.1(a), repay amounts
borrowed and request new Borrowings to be made under this SECTION 3.1(a).

(a)            Administrative Agent will, from time to time prior to the
Termination Date, upon request by Borrower, issue Letters of Credit for the
account of Borrower, so long as (i) the sum of (A) the total Letter of Credit
Exposure then existing, and (B) the amount of the requested Letter of Credit
does not exceed ten percent (10%) of the Conforming Borrowing Base, and (ii)
Borrower would be entitled to a Borrowing under SECTIONS 3.1(a) and 3.1(c) in
the amount of the requested Letter of Credit.  Not less than three (3) Domestic
Business Days prior to the requested date of issuance of any such Letter of
Credit, Borrower shall execute and deliver to Administrative Agent,
Administrative Agent's customary letter of credit application.  Each Letter of
Credit shall be in the minimum amount of $10,000 and shall be in form and
substance acceptable to Administrative Agent.  No Letter of Credit shall have an
expiration date later than the Termination Date.  Upon the date of issuance of a
Letter of Credit, Administrative Agent shall be deemed to have sold to each
other Bank, and each other Bank shall be deemed to have unconditionally and
irrevocably purchased from Administrative Agent, a non-recourse participation in
the related Letter of Credit and Letter of Credit Exposure equal to such Bank's
Commitment Percentage of such Letter of Credit and Letter of Credit Exposure. 
Upon request of any Bank, but not less often than quarterly, Administrative
Agent shall provide notice to each Bank by telephone, teletransmission or telex
setting forth each Letter of Credit issued and outstanding pursuant to the terms
hereof and specifying the beneficiary and expiration date of each such Letter of
Credit, each Bank's percentage of each such Letter of Credit and the actual
dollar amount of each Bank's participation held by Administrative Agent thereof
for such Bank's account and risk.  At the time of issuance of each Letter of
Credit, Borrower shall pay to Administrative Agent in respect of such Letter of
Credit (a) the applicable Letter of Credit Fee, and (b) the applicable Letter of
Credit Fronting Fee.  Administrative Agent shall distribute the Letter of Credit
Fee payable upon the issuance of each Letter of Credit to Banks in accordance
with their respective Commitment Percentages, and Administrative Agent shall
retain the Letter of Credit Fronting Fee for its own account.  Any (y) material
amendment or modification, or 



(z) renewal or extension of any Letter of Credit shall be deemed to be the 
issuance of a new Letter of Credit for purposes of this SECTION 3.1(b).  
Notwithstanding anything to the contrary contained herein, Borrower shall pay 
to Administrative Agent in connection with any amendment or modification of 
any nature, Administrative Agent's usual and customary fees for amendments or 
modifications to, and processing of, Letters of Credit.
(b)  
(c)       Immediately upon the occurrence of an Event of Default, Borrower shall
deposit with Administrative Agent cash in such amounts as Administrative Agent
may request, up to a maximum amount equal to the aggregate existing Letter of
Credit Exposure of all Banks.  Any amounts so deposited shall be held by
Administrative Agent for the ratable benefit of all Banks as security for the
outstanding Letter of Credit Exposure and the other Obligations, and Borrower
will, in connection therewith, execute and deliver such security agreements in
form and substance satisfactory to Administrative Agent which Administrative
Agent may, in its discretion, require.  As drafts or demands for payment are
presented under any Letter of Credit, Administrative Agent shall apply such cash
to satisfy such drafts or demands.  When all Letters of Credit have expired and
the Obligations have been repaid in full (and no Bank has any obligation to lend
or issue Letters of Credit hereunder) or such Event of Default has been cured to
the satisfaction of Required Banks, Administrative Agent shall release to
Borrower any remaining cash deposited under this SECTION 3.1(b).  Whenever
Borrower is required to make deposits under this SECTION 3.1(b) and fails to do
so on the day such deposit is due, Administrative Agent or any Bank may, without
notice to Borrower, make such deposit (whether by application of proceeds of any
collateral for the Obligations, by transfers from other accounts maintained with
any Bank or otherwise) using any funds then available to any Bank of any Credit
Party, any guarantor, or any other party liable for repayment of the
Obligations.
(d)  
(e)       Notwithstanding anything to the contrary contained herein, Borrower
hereby agrees to reimburse Administrative Agent immediately upon demand by
Administrative Agent, and in immediately available funds, for any payment or
disbursement made by Administrative Agent under any Letter of Credit issued by
it.  Payment shall be made by Borrower with interest on the amount so paid or
disbursed by Administrative Agent from and including the date payment is made
under any Letter of Credit to and including the date of payment, at the lesser
of (i) the Maximum Lawful Rate, or (ii) the Default Rate.  The obligations of
Borrower under this paragraph will continue until all Letters of Credit have
expired and all reimbursement obligations with respect thereto have been paid in
full by Borrower and until all other Obligations shall have been paid in full.
(f)  
(g)       Borrower shall be obligated to reimburse Administrative Agent upon
demand for all amounts paid under Letters of Credit as set forth in the
immediately preceding paragraph hereof; PROVIDED, HOWEVER, if Borrower for any
reason fails to reimburse Administrative Agent in full upon demand, Banks shall
reimburse Administrative Agent in accordance with each Banks' Commitment
Percentage for amounts due and unpaid from Borrower as set forth hereinbelow;
PROVIDED, HOWEVER, THAT no such reimbursement made by Banks shall discharge
Borrower's obligations to reimburse Administrative Agent.  All reimbursement
amounts payable by any 



Bank under this SECTION 3.1(b) shall include interest thereon at the Federal 
Funds Rate, from the date of the payment of such amounts by Administrative 
Agent to the date of reimbursement by such Bank.  No Bank shall be liable for 
the performance or nonperformance of the obligations of any other Bank under 
this paragraph.  The reimbursement obligations of Banks under this paragraph 
shall continue after the Termination Date and shall survive termination of 
this Agreement and the other Loan Papers.
(h)  
(i)       Borrower shall indemnify and hold Administrative Agent and each Bank,
and their respective officers, directors, representatives and employees harmless
from loss for any claim, demand or liability which may be asserted against any
or such indemnified party in connection with actions taken under Letters of
Credit or in connection therewith (including losses resulting from the
negligence of any or such indemnified party), and shall pay each indemnified
party for reasonable fees of attorneys and legal costs paid or incurred by each
indemnified party in connection with any matter related to Letters of Credit,
except for losses and liabilities incurred as a direct result of the gross
negligence or willful misconduct of such indemnified party, IT BEING THE EXPRESS
INTENTION OF THE PARTIES THAT EACH INDEMNIFIED PARTY SHALL BE INDEMNIFIED FOR
THE CONSEQUENCES OF ITS OWN ORDINARY NEGLIGENCE.  If Borrower for any reason
fails to indemnify or pay such indemnified party as set forth herein in full,
Banks shall indemnify and pay such indemnified party upon demand, in accordance
with each Bank's Commitment Percentage of such amounts due and unpaid from
Borrower.  The provisions of this paragraph shall survive the termination of
this Agreement.
(j)  
(k)       Administrative Agent does not make any representation or warranty, and
does not assume any responsibility with respect to the validity, legality,
sufficiency or enforceability of any letter of credit application executed and
delivered in connection with any Letter of Credit issued hereunder or any
document relative thereto or to the collectibility thereunder.  Administrative
Agent does not assume any responsibility for the financial condition of Borrower
or for the performance of any obligation of Borrower.  Administrative Agent may
use its discretion with respect to exercising or refraining from exercising any
rights, or taking or refraining from taking any action which may be vested in it
or which it may be entitled to take or assert with respect to any Letter of
Credit or any letter of credit application.  FURTHERMORE, EXCEPT AS SET FORTH
HEREIN,  ADMINISTRATIVE AGENT SHALL BE UNDER NO LIABILITY TO ANY BANK, WITH
RESPECT TO ANYTHING ADMINISTRATIVE AGENT MAY DO OR REFRAIN FROM DOING IN THE
EXERCISE OF ITS JUDGMENT, THE SOLE LIABILITY AND RESPONSIBILITY OF
ADMINISTRATIVE AGENT BEING TO HANDLE EACH BANK'S SHARE ON AS FAVORABLE A BASIS
AS ADMINISTRATIVE AGENT  HANDLES ITS OWN SHARE.  ADMINISTRATIVE AGENT SHALL NOT
HAVE ANY DUTIES OR RESPONSIBILITIES EXCEPT THOSE EXPRESSLY SET FORTH HEREIN AND
THOSE DUTIES AND LIABILITIES SHALL BE SUBJECT TO THE LIMITATIONS AND
QUALIFICATIONS SET FORTH HEREIN. FURTHERMORE, NEITHER ADMINISTRATIVE AGENT, NOR
ANY OF ITS DIRECTORS, OFFICERS, OR EMPLOYEES SHALL BE LIABLE FOR ANY 



ACTION TAKEN OR OMITTED (WHETHER OR NOT SUCH ACTION TAKEN OR OMITTED IS 
EXPRESSLY SET FORTH HEREIN) UNDER OR IN CONNECTION HEREWITH OR UNDER ANY 
OTHER INSTRUMENT OR DOCUMENT IN CONNECTION HEREWITH, EXCEPT FOR GROSS 
NEGLIGENCE OR WILLFUL MISCONDUCT.  Administrative Agent shall not incur any 
liability to any Bank, Borrower, or any Affiliate of any Bank or Borrower, in 
acting upon any notice, document, order, consent, certificate, warrant or 
other instrument reasonably believed by Administrative Agent to be genuine or 
authentic and to be signed by the proper party.
(l)  
(m)            No Bank will be obligated to lend to Borrower hereunder or incur
Letter of Credit Exposure, and Borrower shall not be entitled to borrow
hereunder or obtain Letters of Credit hereunder, in an amount which would cause
the Outstanding Credit to exceed the Borrowing Base then in effect.  No Bank
shall be obligated to fund Borrowings hereunder and Borrower shall not be
entitled to Borrowings hereunder during the existence of a Borrowing Base
Deficiency.   Nothing in this SECTION 3.1(c) shall be deemed to limit any Bank's
obligation to reimburse Administrative Agent with respect to its participation
in Letters of Credit as a result of the drawing under any Letter of Credit
pursuant to SECTION 3.1(b).
(n)  
(o)            In order to request any Borrowing under this SECTION 3.1,
Borrower shall hand deliver, telex or telecopy to Administrative Agent a duly
completed Request for Borrowing (herein so called) prior to 12:00 noon (Dallas,
Texas time), (i) at least one (1) Domestic Business Day before the Borrowing
Date specified for a proposed Base Rate Borrowing, and (ii) at least three (3)
Eurodollar Business Days before the Borrowing Date of a proposed Eurodollar
Borrowing.  Each such Request for Borrowing shall be substantially in the form
of EXHIBIT D hereto, and shall specify:
(p)  
               (i)  the Borrowing Date of such Borrowing, which shall be a
               Domestic Business Day in the case of a Base Rate Borrowing or a
               Eurodollar Business Day in the case of a Eurodollar Borrowing; 

               (i)  the aggregate amount of such Borrowing; 

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

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

Upon receipt of a Request for Borrowing, Administrative Agent shall promptly
notify each Bank of the contents thereof and the amount of the Borrowing to be
loaned by such Bank pursuant thereto, and such Request for Borrowing shall not
thereafter be revocable by Borrower.  Not later than 12:00 noon (Dallas, Texas
time) on the date of each Borrowing, each Bank shall make 



available its Commitment Percentage of such Borrowing, in Federal or other 
funds immediately available in Dallas, Texas to Administrative Agent at its 
address set forth on SCHEDULE 1 hereto.  Notwithstanding the foregoing, if 
Borrower delivers to Administrative Agent a Request for Borrowing prior to 
10:00 a.m. (Dallas, Texas time) on a Domestic Business Day requesting a Base 
Rate Borrowing on such day, each Bank shall use its best efforts to make 
available to Administrative Agent its Commitment Percentage of such Borrowing 
by 1:00 p.m. (Dallas, Texas time) on the same day.  Unless Administrative 
Agent determines that any applicable condition specified in SECTION 8.2 has 
not been satisfied, Administrative Agent will make the funds so received from 
Banks available to Borrower at Administrative Agent's aforesaid address.

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

          (i)  the terms of such requested Letter of Credit, including the name
          and address of the beneficiary, the stated amount, the expiration date
          and the conditions under which drafts under such Letter of Credit are
          to be available; and

          (i)  the purpose of such Letter of Credit.

Upon receipt of a Request for Letter of Credit, Administrative Agent shall 
promptly notify each Bank of the contents thereof, including the amount of 
the requested Letter of Credit, and such Request for Letter of Credit shall 
not thereafter be revocable by Borrower.  No later than 12:00 noon (Dallas, 
Texas time) on the date each Letter of Credit is requested, unless 
Administrative Agent determines that any applicable condition precedent set 
forth in SECTION 8.2 hereof has not been satisfied, Administrative Agent will 
issue and deliver such Letter of Credit pursuant to the instructions of 
Borrower.

1.1.      SECTION NOTES .  Each Bank's Commitment Percentage of the Loan shall
be evidenced by a single Note payable to the order of such Bank in an amount
equal to such Bank's Commitment.
1.2. 
(a)       SECTION INTEREST RATES; PAYMENTS.     The principal amount of the Base
Rate Loan outstanding from day to day shall bear interest at a rate per annum
equal to the Base Rate in effect from day to day; PROVIDED THAT in no event
shall the rate charged hereunder or under the Notes exceed the Maximum Lawful
Rate.  Interest on the Base Rate Loan shall be payable as it accrues on each
Quarterly Date, and on the Termination Date.



(b)  
(c)       The principal amount of each Eurodollar Loan outstanding from day to
day shall bear interest for the Interest Period applicable thereto at a rate per
annum equal to the sum of (i) the Applicable Margin plus (ii) the applicable
Adjusted Eurodollar Rate; PROVIDED THAT in no event shall the rate charged
hereunder or under the Notes exceed the Maximum Lawful Rate.  Interest on any
portion of the principal of each Eurodollar Loan subject to an Interest Period
of one (1), two (2) or three (3) months shall be payable on the last day of the
Interest Period applicable thereto.  Interest on any portion of the principal of
each Eurodollar Loan having an Interest Period of six (6) months shall be
payable on the last day of the Interest Period applicable thereto and on each
Quarterly Date.
(d)  
(e)       So long as no Default or Event of Default shall be continuing, subject
to the provisions of this SECTION 3.3, Borrower shall have the option of having
all or any portion of the principal outstanding under the Loan be a Base Rate
Loan or one (1) or more Eurodollar Loans, which shall bear interest at rates
determined by reference to the Base Rate and the Adjusted Eurodollar Rate,
respectively; PROVIDED, THAT each Eurodollar Loan shall be in a minimum amount
of $1,000,000 and shall be in an amount which is an integral multiple of
$100,000.  Prior to the termination of each Interest Period with respect to each
Eurodollar Loan, Borrower shall give written notice (a "NOTICE OF CONTINUATION
OR CONVERSION") in the form of EXHIBIT F attached hereto to Administrative Agent
of the Type of Loan which shall be applicable to the principal of such
Eurodollar Loan upon the expiration of such Interest Period.  Such Notice of
Continuation or Conversion shall be given to Administrative Agent at least one
(1) Domestic Business Day, in the case of a Base Rate Loan selection, and three
(3) Eurodollar Business Days, in the case of a Eurodollar Loan selection, prior
to the termination of the Interest Period then expiring.  If Borrower shall
specify a Eurodollar Loan, such Notice of Continuation or Conversion shall also
specify the length of the succeeding Interest Period (subject to the provisions
of the definition of such term) selected by Borrower.  Each Notice of
Continuation or Conversion shall be irrevocable and effective upon notification
thereof to Administrative Agent.  If the required Notice of Continuation or
Conversion shall not have been timely received by Administrative Agent, Borrower
shall be deemed to have elected that the principal of the Eurodollar Loan
subject to the Interest Period then expiring be Converted to the Base Rate Loan 
upon the expiration of such Interest Period and Borrower will be deemed to have
given Administrative Agent notice of such election.  Subject to the limitations
set forth in this SECTION 3.3(c) on the amount and number of Eurodollar Loans,
Borrower shall have the right to Convert all or any part of the Base Rate Loan
to a Eurodollar Loan by giving Administrative Agent a  Notice of Continuation or
Conversion of such election at least three (3) Eurodollar Business Days prior to
the date on which Borrower elects to make such Conversion (a "CONVERSION DATE").
The Conversion Date selected by Borrower shall be a Eurodollar Business Day. 
Notwithstanding anything in this SECTION 3.3 to the contrary, no portion of the
principal of the Base Rate Loan may be Converted to a Eurodollar Loan and no
Eurodollar Loan may be Continued as such when any Default or Event of Default
has occurred and is continuing, but each such Eurodollar Loan shall be
automatically Converted to the Base Rate Loan on the last day of each applicable



Interest Period.  Borrower shall not be permitted to have more than five (5)
Eurodollar Loans in effect at any time.
(f)  
(g)       Notwithstanding anything to the contrary set forth in SECTION 3.3(a)
or (b) above, after the occurrence of an Event of Default, interest shall accrue
on the outstanding principal balance of the Loan, and to the extent permitted by
Law, on the accrued but unpaid interest on the Loan and all other Obligations
from the period from and including the occurrence of such Event of Default to
but excluding the date the same is remedied at a rate per annum equal to the
lesser of (a) the Default Rate, and (b) the Maximum Lawful Rate.
(h)  
(i)       Administrative Agent shall determine each interest rate applicable to
the Loan in accordance with the terms hereof.  Administrative Agent shall
promptly notify Borrower and Banks by telex, telecopy or cable of each rate of
interest so determined, and its determination thereof shall be conclusive in the
absence of manifest error.
(j)  
(k)       Notwithstanding the foregoing, if at any time the rate of interest
calculated with reference to the Base Rate or the Eurodollar Rate hereunder (the
"CONTRACT RATE") is limited to the Maximum Lawful Rate, any subsequent
reductions in the contract rate shall not reduce the rate of interest on the
Loan below the Maximum Lawful Rate until the total amount of interest accrued
equals the amount of interest which would have accrued if the contract rate had
at all times been in effect.  In the event that at maturity (stated or by
acceleration), or at final payment of any Note, the total amount of interest
paid or accrued on such Note is less than the amount of interest which would
have accrued if the contract rate had at all times been in effect with respect
thereto, then at such time, to the extent permitted by law, Borrower shall pay
to the holder of such Note an amount equal to the difference between (i) the
lesser of the amount of interest which would have accrued if the contract rate
had at all times been in effect and the amount of interest which would have
accrued if the Maximum Lawful Rate had at all times been in effect, and (ii) the
amount of interest actually paid on such Note.
(l)  
(m)       Interest payable hereunder on each Eurodollar Loan shall be computed
based on the number of actual days elapsed assuming that each calendar year
consisted of 360 days.  Interest payable hereunder on the Base Rate Loan shall
be computed based on the actual number of days elapsed assuming that each
calendar year consisted of 365 days.
(n)       SECTION MANDATORY PREPAYMENTS RESULTING FROM BORROWING BASE
DEFICIENCY.   In the event a Borrowing Base Deficiency exists after giving
effect to any Redetermination, Borrower shall, at its option, either  eliminate
such Borrowing Base Deficiency by making a single mandatory prepayment of
principal on the Loan in an amount equal to the entire amount of such Borrowing
Base Deficiency on the first Monthly Date following the date on which such
Borrowing Base Deficiency is determined to exist, or  eliminate such deficiency
by making six (6) consecutive mandatory prepayments of principal on the Loan
each of which shall be in the amount of one sixth (1/6th) of the amount of such
Borrowing Base Deficiency commencing on the first Monthly Date following the
date on which such Borrowing Base Deficiency is determined to exist and
continuing on each Monthly Date thereafter.  If a Borrowing Base 



Deficiency cannot be eliminated pursuant to this SECTION 3.4 by prepayment of 
the Loan in full (as a result of outstanding Letter of Credit Exposure) on 
each Monthly Date, Borrower shall also deposit cash with Administrative 
Agent, to be held by Administrative Agent to secure outstanding Letter of 
Credit Exposure in the manner contemplated by SECTION 3.1(b), in an amount at 
least equal to one sixth (1/6th) of the balance of such Borrowing Base 
Deficiency (i.e., one-sixth (1/6th) of the difference between the Borrowing 
Base Deficiency and the remaining outstanding principal under the Loan on the 
date such Borrowing Base Deficiency is first determined to occur).
(o)  
1.3.      SECTION VOLUNTARY PREPAYMENTS.   Borrower may, subject to SECTION 5.5
and the other provisions of this Agreement, upon three (3) Domestic Business
Days advance notice to Administrative Agent, prepay the principal of the Loan in
whole or in part.  Any partial prepayment shall be in a minimum amount of
$1,000,000 and shall be in an integral multiple of $100,000.
1.4. 
1.5.      SECTION VOLUNTARY REDUCTION OF COMMITMENTS .  Borrower may, by notice
to Administrative Agent five (5) Domestic Business Days prior to the effective
date of any such reduction, reduce the Total Commitment (and thereby reduce the
Commitment of each Bank ratably) in amounts not less than $5,000,000 and in an
amount which is an integral multiple of $1,000,000.  On the effective date of
any such reduction, Borrower shall, to the extent required as a result of such
reduction, make a principal payment on the Loan in an amount sufficient to cause
the principal balance of the Loan then outstanding to be equal to or less than
the Total Commitment as thereby reduced.  Notwithstanding the foregoing,
Borrower shall not be permitted to voluntarily reduce the Total Commitment to an
amount less than the aggregate Letter of Credit Exposure of all Banks.
1.6. 
1.7.      SECTION TERMINATION OF COMMITMENTS; FINAL MATURITY  of Loan.  The
Total Commitment (and the Commitment of each Bank) shall terminate, and the
entire outstanding principal balance of the Loan, all interest accrued thereon,
all accrued but unpaid fees hereunder and all other outstanding Obligations
shall be due and payable in full on the Termination Date.  
1.8. 
1.9.      SECTION UNUSED COMMITMENT FEE .  On the Termination Date, on each
Quarterly Date prior to the Termination Date, and, in the event the Commitments
are terminated in their entirety prior to the Termination Date, on the date of
such termination, Borrower shall pay to Administrative Agent, for the ratable
benefit of each Bank based on each Bank's Commitment Percentage, a commitment
fee equal to the Unused Commitment Fee Percentage in effect from day to day
(applied on a per annum basis and computed on the basis of actual days elapsed
and as if each calendar year consisted of 365 days) of the average daily
Availability for the Fiscal Quarter (or portion thereof) ending on the date such
payment is due.
1.10.     
1.11.          SECTION AGENCY AND OTHER FEES .  Borrower shall pay to
Administrative Agent and its Affiliates such other fees and amounts as Borrower
shall be required to pay to Administrative Agent and its Affiliates from time to
time pursuant to any separate agreement between Borrower 



and Administrative Agent or such Affiliates.  Such fees and other amounts 
shall be retained by Administrative Agent and its Affiliates, and no Bank 
(other than Administrative Agent) shall have any interest therein.  
Administrative Agent may disburse any fees paid to Administrative Agent and 
its Affiliates pursuant to this SECTION 3.9 in any manner Administrative 
Agent desires in its sole discretion
1.12.                                  
                                    1ARTICLE 
                                GENERAL PROVISIONS
                                       1
1.1.      SECTION DELIVERY AND ENDORSEMENT OF NOTES .  On the Closing Date,
Administrative Agent shall deliver to each Bank the Note payable to such Bank. 
Each Bank may endorse (and prior to any transfer of its Note shall endorse) on
the schedules attached and forming a part thereof appropriate notations to
evidence the date and amount of its Commitment Percentage of each Borrowing, the
Interest Period applicable thereto, and the date and amount of each payment of
principal made by Borrower with respect thereto; PROVIDED THAT the failure by
any Bank to so endorse its Note shall not affect the liability of Borrower for
the repayment of all amounts outstanding under such Note together with interest
thereon.  Each Bank is hereby irrevocably authorized by Borrower to endorse its
Note and to attach to and make a part of any such Note a continuation of any
such schedule as required.

(a)       SECTION GENERAL PROVISIONS AS TO PAYMENTS .    Borrower shall make
each payment of principal of, and interest on, the Loan, and all fees payable
hereunder shall be paid, not later than 12:00 noon  (Dallas, Texas time) on the
date when due, in Federal or other funds immediately available in Dallas, Texas,
to Administrative Agent at its address set forth on SCHEDULE 1 hereto. 
Administrative Agent will promptly (and if such payment is received by
Administrative Agent by 10:00 a.m., and otherwise if reasonably possible, on the
same Domestic Business Day) distribute to each Bank its Commitment Percentage of
each such payment received by Administrative Agent for the account of Banks. 
Whenever any payment of principal of, or interest on, any portion of the Loan
subject to a Base Rate Tranche or of fees shall be due on a day which is not a
Domestic Business Day, the date for payment thereof shall be extended to the
next succeeding Domestic Business Day.  Whenever any payment of principal of, or
interest on, any portion of the Loan subject to a Eurodollar Tranche shall be
due on a day which is not a Eurodollar Business Day, the date for payment
thereof shall be extended to the next succeeding Eurodollar Business Day
(subject to the provisions of the definition of Interest Period).  If the date
for any payment of principal is extended by operation of Law or otherwise,
interest thereon shall be payable for such extended time.  Borrower hereby
authorizes Administrative Agent to charge from time to time against Borrower's
accounts with Administrative Agent any amount then due.
(b)  
(c)            Prior to the occurrence of an Event of Default, all principal
payments received by Banks with respect to the Loan shall be applied first to
Eurodollar Tranches outstanding with 



Interest Periods ending on the date of such payment, then to Base Rate 
Tranches, and then to Eurodollar Tranches next maturing until such principal 
payment is fully applied.
(d)  
(e)            After the occurrence of an Event of Default, all amounts
collected or received by Administrative Agent or any Bank shall be applied first
to the payment of all proper costs incurred by Administrative Agent in
connection with the collection thereof (including reasonable expenses and
disbursements of Administrative Agent), second to the payment of all proper
costs incurred by Banks in connection with the collection thereof (including
reasonable expenses and disbursements of Banks), third to the reimbursement of
any advances made by Banks to effect performance of any unperformed covenants of
any Credit Party under any of the Loan Papers, fourth to the payment of any
unpaid fees required pursuant to SECTION 3.9, fifth to the payment of any unpaid
fees required pursuant to SECTIONS 3.1(b) and 3.8, sixth, to payment to each
Bank of its Commitment Percentage of the outstanding principal of the Loan and
accrued but unpaid interest thereon, and seventh to establish the deposits
required in SECTION 3.1(b).  All payments received by a Bank after the
occurrence of an Event of Default for application to the principal of the Loan
shall be applied by such Bank in the manner provided in SECTION 4.2(b).
(f)  

                                    1ARTICLE
                            CHANGE IN CIRCUMSTANCES
                                       1
1.1.      SECTION INCREASED COST AND REDUCED RETURN .

(a)       If, after the date hereof, the adoption of any applicable law, rule,
or regulation, or any change in any applicable law, rule, or regulation, or any
change in the interpretation or administration thereof by any Governmental
Authority, central bank, or comparable agency charged with the interpretation or
administration thereof, or compliance by any Bank (or its Applicable Lending
Office) with any request or directive (whether or not having the force of law)
of any such Governmental Authority, central bank, or comparable agency:
(b)  
(i)                 shall subject such Bank (or its Applicable Lending Office)
          to any tax, duty, or other charge with respect to any Eurodollar
          Loans, its Note, or its obligation to make Eurodollar Loans, or change
          the basis of taxation of any amounts payable to such Bank (or its
          Applicable Lending Office) under this Agreement or its Note in respect
          of any Eurodollar Loans (other than taxes imposed on the overall net
          income of such Bank or such Applicable Lending Office);

(i)                 shall impose, modify, or deem applicable any reserve,
          special deposit, assessment, compulsory loan, or similar requirement
          (other than the Reserve Requirement utilized in the determination of
          the Adjusted Eurodollar Rate) relating to any extensions of credit or
          other assets of, or any deposits with or 



          other liabilities or commitments of, such Bank (or its Applicable 
          Lending Office), including the Commitment of such Bank hereunder; or

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

and the result of any of the foregoing is to increase the cost to such Bank 
(or its Applicable Lending Office) of making, Converting into, Continuing, or 
maintaining any Eurodollar Loans or to reduce any sum received or receivable 
by such Bank (or its Applicable Lending Office) under this Agreement or its 
Note with respect to any Eurodollar Loans, then Borrower shall pay to such 
Bank on demand such amount or amounts as will compensate such Bank for such 
increased cost or reduction.  If any Bank requests compensation by Borrower 
under this SECTION 5.1(a), Borrower may, by notice to such Bank (with a copy 
to Administrative Agent), suspend the obligation of such Bank to make or 
Continue Eurodollar Loans or to Convert all or part of the Base Rate Loan 
owing to such Bank into Eurodollar Loans, until the event or condition giving 
rise to such request ceases to be in effect (in which case the provisions of 
SECTION 5.4 shall be applicable); PROVIDED THAT such suspension shall not 
affect the right of such Bank to receive the compensation so requested.

(a)       If, after the date hereof, any Bank shall have determined that the
adoption of any applicable law, rule, or regulation regarding capital adequacy
or any change therein or in the interpretation or administration thereof by any
Governmental Authority, central bank, or comparable agency charged with the
interpretation or administration thereof, or any request or directive regarding
capital adequacy (whether or not having the force of law) of any such
Governmental Authority, central bank, or comparable agency, has or would have
the effect of reducing the rate of return on the capital of such Bank or any
corporation controlling such Bank as a consequence of such Bank's obligations
hereunder to a level below that which such Bank or such corporation could have
achieved but for such adoption, change, request, or directive (taking into
consideration its policies with respect to capital adequacy), then, from time to
time upon demand, Borrower shall pay to such Bank such additional amount or
amounts as will compensate such Bank for such reduction.
(b)  
(c)       Each Bank shall promptly notify Borrower and Administrative Agent of
any event of which it has knowledge, occurring after the date hereof, which will
entitle such Bank to compensation pursuant to this SECTION 5.1 and will
designate a different Applicable Lending Office if such designation will avoid
the need for, or reduce the amount of, such compensation and will not, in the
judgment of such Bank, be otherwise disadvantageous to it.  Any Bank claiming
compensation under this SECTION 5.1 shall furnish to Borrower and Administrative
Agent a statement setting forth the additional amount or amounts to be paid to
it hereunder which shall be conclusive in the absence of manifest error.  In
determining such amount, such Bank may use any reasonable averaging and
attribution methods.



1.1.      SECTION LIMITATION ON TYPES OF LOANS .  If on or prior to the first
day of any Interest Period for any Eurodollar Loan:
1.2. 
(a)            Administrative Agent determines (which determination shall be
conclusive) that by reason of circumstances affecting the relevant market,
adequate and reasonable means do not exist for ascertaining the Eurodollar Rate
for such Interest Period; or

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

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

1.1.      SECTION ILLEGALITY .  Notwithstanding any other provision of this
Agreement, in the event that it becomes unlawful for any Bank or its Applicable
Lending Office to make, maintain, or fund Eurodollar Loans hereunder, then such
Bank shall promptly notify Borrower thereof and such Bank's obligation to make
or Continue Eurodollar Loans and to Convert other Types of Loans into Eurodollar
Loans shall be suspended until such time as such Bank may again make, maintain,
and fund Eurodollar Loans (in which case the provisions of SECTION 5.4 shall be
applicable).
1.2. 
1.3.      SECTION TREATMENT OF AFFECTED LOANS .  If the obligation of any Bank
to make particular Eurodollar Loans or to Continue Loans, or to Convert Loans of
another Type into Loans of a particular Type shall be suspended pursuant to
SECTION 5.1 or 5.3 hereof (Loans of such Type being herein called "AFFECTED
LOANS" and such Type being herein called the "AFFECTED TYPE"), such Bank's
Affected Loans shall be automatically Converted into the Base Rate Loan on the
last day(s) of the then current Interest Period(s) for Affected Loans (or, in
the case of a Conversion required by SECTION 5.3 hereof, on such earlier date as
such Bank may specify to Borrower with a copy to Administrative Agent) and,
unless and until such Bank gives notice as provided below that the circumstances
specified in SECTION 5.1 or 5.3 hereof that gave rise to such Conversion no
longer exist:
1.4. 
(a)            to the extent that such Bank's Affected Loans have been so
Converted, all payments and prepayments of principal that would otherwise be
applied to such Bank's Affected Loans shall be applied instead to the Base Rate
Loan; and



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

If such Bank gives notice to Borrower (with a copy to Administrative Agent) that
the circumstances specified in SECTION 5.1 or 5.3 hereof that gave rise to the
Conversion of such Bank's Affected Loans pursuant to this SECTION 5.4 no longer
exist (which such Bank agrees to do promptly upon such circumstances ceasing to
exist) at a time when Loans of the Affected Type made by other Banks are
outstanding, such Bank's portion of the Base Rate Loan shall be automatically
Converted, on the first day(s) of the next succeeding Interest Period(s) for
such outstanding Loans of the Affected Type to the extent necessary so that,
after giving effect thereto, all Loans held by Banks holding Loans of the
Affected Type and by such Bank are held pro rata (as to principal amounts, Types
and Interest Periods) in accordance with their respective Commitments.

1.1.      SECTION COMPENSATION .  Upon the request of any Bank, Borrower shall
pay to such Bank such amount or amounts as shall be sufficient (in the
reasonable opinion of such Bank) to compensate it for any loss, cost, or expense
(including loss of anticipated profits) incurred by it as a result of:
1.2. 
(a)            any payment, prepayment, or Conversion of a Eurodollar Loan for
any reason (including, without limitation, the acceleration of the Loan) on a
date other than the last day of  the Interest Period for such Loan; or

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

(a)       SECTION TAXES .    Any and all payments by Borrower to or for the
account of any Bank or Administrative Agent hereunder or under any other Loan
Paper shall be made free and clear of and without deduction for any and all
present or future taxes, duties, levies, imposts, deductions, charges or
withholdings, and all liabilities with respect thereto, EXCLUDING, in the case
of each Bank and Administrative Agent, taxes imposed on its income, and
franchise taxes imposed on it, by any relevant taxation authority (all such 
non-excluded taxes, duties, levies, imposts, deductions, charges, withholdings, 
and liabilities being hereinafter referred to in this SECTION 5.6 as 
"NON-EXCLUDED TAXES").  If Borrower shall be required by law to deduct any 
Non-Excluded Taxes from or in respect of any sum payable under this Agreement or
any other Loan Paper to any Bank or Administrative Agent, (i) the sum payable 
shall be increased as necessary so that after making all required deductions 
(including deductions applicable to additional sums payable under this SECTION 
5.6) such Bank or Administrative Agent receives an amount equal to the sum it 
would have received had no such deductions been made, (ii) Borrower shall make 
such deductions, (iii) Borrower shall pay the full amount deducted to the 
relevant taxation authority or other authority in accordance with applicable 
law, and (iv) Borrower shall furnish to Administrative Agent, at its address set
forth in SCHEDULE 1 hereto, the original or a certified copy of a receipt 
evidencing payment thereof.
(b)  
(c)       In addition, Borrower agrees to pay any and all present or future
stamp or documentary taxes and any other excise or property taxes or charges or
similar levies which arise from any payment made under this Agreement or any
other Loan Paper or from the execution or delivery of, or otherwise with respect
to, this Agreement or any other Loan Paper (hereinafter referred to as "OTHER
TAXES").
(d)  
(e)       Borrower agrees to indemnify each Bank and Administrative Agent for
the full amount of Non-Excluded Taxes and Other Taxes (including, without
limitation, any Non-Excluded Taxes or Other Taxes imposed or asserted by any
jurisdiction on amounts payable under this SECTION 5.6) paid by such Bank or
Administrative Agent (as the case may be) and any liability (including
penalties, interest, and expenses) arising therefrom or with respect thereto.  

(a)        Each Bank organized under the laws of a jurisdiction outside the
United States, on or prior to the date of its execution and delivery of this
Agreement in the case of each Bank listed on SCHEDULE 1 hereto and on or prior
to the date on which it becomes a Bank in the case of each other Bank, and from
time to time thereafter if requested in writing by Borrower or Administrative
Agent (but only so long as such Bank remains lawfully able to do so), shall
provide Borrower and Administrative Agent with (i) Internal Revenue Service Form
1001 or 4224, as appropriate, or any successor form prescribed by the Internal
Revenue Service, certifying that such Bank is entitled to benefits under an
income tax treaty to which the United States is a party which reduces the rate
of withholding tax on payments of interest or certifying that the income
receivable pursuant to this Agreement is effectively connected with the conduct
of a trade or business in the United States, (ii) Internal Revenue Service Form
W-8 or W-9, as appropriate, or any successor form prescribed by the Internal
Revenue Service, and (iii) any other form or certificate required by any taxing
authority (including any certificate required by Sections 871(h) and 881(c) of
the Internal Revenue Code), certifying that such Bank is entitled to an
exemption from or a reduced rate of tax on payments pursuant to this Agreement
or any of the other Loan Papers.
(b)  
(c)       For any period with respect to which a Bank has failed to provide
Borrower and Administrative Agent with the appropriate form pursuant to SECTION
5.6(d) (unless such failure is due to a change in treaty, law, or regulation
occurring subsequent to the date on which a form originally was required to be
provided), such Bank shall not be entitled to indemnification under SECTION
5.6(a) or 5.6(b) with respect to Non-Excluded Taxes imposed by the United
States; PROVIDED, HOWEVER, THAT should a Bank, which is otherwise exempt from or
subject to a reduced rate of withholding tax, become subject to Non-Excluded
Taxes because of its failure to deliver a 



form required hereunder, Borrower shall take such steps as such Bank shall 
reasonably request to assist such Bank to recover such Non-Excluded Taxes.
(d)  
(e)       If Borrower is required to pay additional amounts to or for the
account of any Bank pursuant to this SECTION 5.6, then such Bank will agree to
use reasonable efforts to change the jurisdiction of its Applicable Lending
Office so as to eliminate or reduce any such additional payment which may
thereafter accrue if such change, in the judgment of such Bank, is not otherwise
disadvantageous to such Bank.
(f)  
(g)       Within thirty (30) days after the date of any payment of Non-Excluded
Taxes, Borrower shall furnish to Administrative Agent the original or a
certified copy of a receipt evidencing such payment.
(h)  
(i)       Without prejudice to the survival of any other agreement of Borrower
hereunder, the agreements and obligations of Borrower contained in this SECTION
5.6 shall survive the termination of the Commitments and the payment in full of
the Notes.
(j)  
1.2.      SECTION DISCRETION OF BANKS AS TO MANNER OF FUNDING .  Notwithstanding
any provisions of this Agreement to the contrary, each Bank shall be entitled to
fund and maintain its funding of all or any part of its Commitment in any manner
it sees fit, it being understood, however, that for the purposes of this
Agreement all determinations hereunder shall be made as if such Bank had
actually funded and maintained each Eurodollar Loan during the Interest Period
for such Eurodollar Loan through the purchase of deposits having a maturity
corresponding to the last day of such Interest Period and bearing an interest
rate equal to the Adjusted Eurodollar Rate for such Interest Period.


                                       
                                   1ARTICLE
                                BORROWING BASE
                                       1
1.1.      SECTION RESERVE REPORT; PROPOSED BORROWING BASE  and Conforming
Borrowing Base.  As soon as available and in any event by March 31 and September
30 of each year commencing March 31, 1999, Borrower shall deliver to
Administrative Agent and each Bank a Reserve Report prepared as of the
immediately preceding December 31 and June 30 respectively.  Simultaneously with
the delivery to Administrative Agent and each Bank of each Reserve Report,
Borrower shall notify Administrative Agent and each Bank of the amount of the
Borrowing Base which Borrower requests become effective on the next
Redetermination Date (or such date promptly following such Redetermination Date
as Required Banks shall elect).  Banks may, in their sole discretion, establish
a Borrowing Base which is higher than the Borrowing Base  would otherwise be if
Banks determined the Borrowing Base based on each Bank's application of the
credit standards and other criteria customarily applied by such Bank in the
determination of credit limitations for companies similar to Borrower
("CONFORMING CREDIT CRITERIA").  At the time of each Redetermination, Banks
shall also determine what the Borrowing Base would be if they applied Conforming
Credit Criteria (the "CONFORMING BORROWING BASE").  If Banks do not determine a
Conforming Borrowing Base, the Borrowing Base as redetermined shall also be the
Conforming Borrowing Base for purposes of this Agreement.

1.1.      SECTION SCHEDULED REDETERMINATIONS OF THE BORROWING BASE AND THE
CONFORMING BORROWING BASE; PROCEDURES AND STANDARDS .  Based in part on the
Reserve Reports made available to Banks pursuant to SECTION 6.1, Banks shall
redetermine the Borrowing Base and the Conforming Borrowing Base on or prior to
the next Redetermination Date (or such date promptly thereafter as reasonably
possible based on the engineering and other information available to Banks). 
Any Borrowing Base or Conforming Borrowing Base which becomes effective as a
result of any Redetermination of the Borrowing Base or Conforming Borrowing Base
shall be subject to the following restrictions: (a) such Borrowing Base or
Conforming Borrowing Base shall not exceed the Borrowing Base requested by
Borrower pursuant to SECTIONS 6.1 or 6.3 (as applicable), (b) such Borrowing
Base or Conforming Borrowing Base shall not exceed the Total Commitment then in
effect, (c) to the extent such Borrowing Base or Conforming Borrowing Base
represents an increase from the Borrowing Base or the Conforming Borrowing Base
(as applicable) in effect prior to such Redetermination, such Borrowing Base or
Conforming Borrowing Base shall be approved by all Banks, and (d) to the extent
such Borrowing Base or Conforming Borrowing Base represents a decrease in the
Borrowing Base or the Conforming Borrowing Base (as applicable) in effect prior
to such Redetermination, or a reaffirmation of such prior Borrowing Base or
Conforming Borrowing Base, such Borrowing Base or Conforming Borrowing Base
shall be approved by Required Banks.  Each Redetermination shall be made by
Banks in their sole discretion.  Without limiting such discretion, Borrower
acknowledges and agrees that Banks (i) may make such assumptions regarding
appropriate existing and projected pricing for Hydrocarbons as they deem
appropriate 



in their sole discretion, (ii) may make such assumptions regarding projected 
rates and quantities of future production of Hydrocarbons from the Mineral 
Interests owned by Borrower as they deem appropriate in their sole discretion, 
(iii) may consider the projected cash requirements of the Credit Parties, 
(iv) except with respect to the Initial Borrowing Base and the Initial 
Conforming Borrowing Base, are not required to consider any asset other than
Proved Mineral Interests owned by Borrower which are subject to first and prior
Liens in favor of Administrative Agent for the ratable benefit of Banks to the
extent required by SECTION 7.1 hereof, and (v) may make such other assumptions,
considerations and exclusions as Banks deem appropriate in the exercise of their
sole discretion.  It is further acknowledged and agreed that each Bank may
consider such other credit factors as it deems appropriate in the exercise of
its sole discretion and shall have no obligation in connection with any
Redetermination to approve any increase from the Borrowing Base or the
Conforming Borrowing Base in effect prior to such Redetermination.  The
Conforming Borrowing Base shall also be determined by Banks in their sole
discretion, and in determining the amount of the Conforming Borrowing Base, each
Bank may make the assumptions and consider the factors and criteria set forth in
subclauses (a) through (d) and (i) through (v) above; PROVIDED, THAT each Bank
shall apply Conforming Credit Criteria.  Promptly following any Redetermination
of the Borrowing Base and the Conforming Borrowing Base, Administrative Agent
shall notify Borrower of the amount of the Borrowing Base and the Conforming
Borrowing Base as redetermined, which Borrowing Base and Conforming Borrowing
Base shall be effective as of the date specified in such notice, and shall
remain in effect for all purposes of this Agreement until the next
Redetermination.
1.2. 
(a)       SECTION SPECIAL REDETERMINATION.    In addition to Scheduled
Redeterminations, Required Banks shall be permitted to make a Special
Redetermination of the Borrowing Base and the Conforming Borrowing Base once in
each period between Scheduled Redeterminations.  Any request by Required Banks
pursuant to this SECTION 6.3(a) shall be submitted to Administrative Agent and
Borrower.
(b)            In addition to Scheduled Redeterminations, Borrower shall be
permitted to request a Special Redetermination of the Borrowing Base and the
Conforming Borrowing Base once in each Fiscal Year.  Such request shall be
submitted to Administrative Agent and Required Banks and at the time of such
request Borrower shall deliver to Administrative Agent and each Bank a Reserve
Report.  Together with such request, Borrower shall also notify Administrative
Agent and each Bank of the Borrowing Base requested by Borrower in connection
with such Special Redetermination.
(c)  
(d)            Any Special Redetermination shall be made by Banks in accordance
with the procedures and standards set forth in SECTION 6.2; PROVIDED, THAT, no
Reserve Report will be required to be delivered to Administrative Agent and
Banks in connection with any Special Redetermination requested by Required Banks
pursuant to clause (a) above.
(e)  
1.3.      SECTION BORROWING BASE DEFICIENCY .  If a Borrowing Base Deficiency
exists after giving effect to any Redetermination, Borrower shall be obligated
to eliminate such Borrowing Base Deficiency by making the mandatory prepayments
of the Loan required by SECTION 3.4.



1.4. 
1.5.      Section     INITIAL BORROWING BASE AND CONFORMING BORROWING BASE . 
Notwithstanding anything to the contrary contained herein, the Borrowing Base
and the Conforming Borrowing Base in effect during the period commencing on the
Closing Date and ending on the effective date of the first Redetermination after
the Closing Date shall be the Initial Borrowing Base and the Initial Conforming
Borrowing Base, respectively.
1.6. 

                                    1ARTICLE
                           COLLATERAL AND GUARANTEES
                                       1
(a)       SECTION SECURITY .   The Obligations shall be secured by first and
prior Liens (subject only to Permitted Encumbrances) covering and encumbering
(i) one hundred percent (100%) of all Borrowing Base Properties, (ii) one
hundred percent (100%) of the issued and outstanding Equity of each existing and
future Subsidiary of Borrower, and (iii) all right, title and interest of
Borrower under the Management Agreement.  On the Closing Date, Borrower shall
deliver to Administrative Agent for the ratable benefit of each Bank, the
Assignments of Notes and Liens, and Mortgages in form and substance acceptable
to Administrative Agent and duly executed by Borrower together with such other
assignments, conveyances, amendments, agreements and other writings, including,
without limitation, UCC-1 financing statements and UCC-3 assignments (each duly
authorized and executed) as Administrative Agent shall deem necessary or
appropriate to grant, evidence and perfect first and prior Liens in all
Borrowing Base Properties and other interests of Borrower required by this
SECTION 7.1(a).

(a)            On or before each Redetermination Date after the Closing Date and
at such other times as Administrative Agent or Required Banks shall request,
Borrower shall execute and deliver to Administrative Agent, for the ratable
benefit of each Bank, Mortgages in form and substance acceptable to
Administrative Agent and duly executed by Borrower together with such other
assignments, conveyances, amendments, agreements and other writings, including,
without limitation, UCC-1 financing statements (each duly authorized and
executed) as Administrative Agent shall deem necessary or appropriate to grant,
evidence and perfect the Liens required by SECTION 7.1(a) preceding with respect
to Borrowing Base Properties acquired by Borrower subsequent to the last date on
which Borrower was required to execute and deliver Mortgages pursuant to this
SECTION 7.1(b), or which, for any other reason are not the subject of valid,
enforceable, perfected first priority Liens (subject only to Permitted
Encumbrances) in favor of Administrative Agent for the ratable benefit of Banks.
(b)  
(c)            At any time Borrower or any of its Subsidiaries is required to
execute and deliver Mortgages to Administrative Agent pursuant to this SECTION
7.1, Borrower shall also deliver to Administrative Agent such opinions of
counsel (including, if so requested, title opinions, and in each case addressed
to Administrative Agent) and other evidence of title as Administrative Agent
shall deem necessary or appropriate to verify (i) Borrower's title to the
Required Reserve 



Value of the Proved Mineral Interests which are subject to such Mortgages, 
and (ii) the validity, perfection and priority of the Liens created by such 
Mortgages and such other matters regarding such Mortgages as Administrative 
Agent shall reasonably request.
(d)  
(e)            On the date of the creation or acquisition by Borrower of any
Subsidiary, or on the date of creation or acquisition by any First Tier
Subsidiary of any Subsidiary, Borrower or such First Tier Subsidiary (as
applicable) shall execute and deliver to Administrative Agent a Borrower Pledge
Agreement or a Subsidiary Pledge Agreement (as applicable) together with (i) all
certificates (or other evidence acceptable to Administrative Agent) evidencing
the issued and outstanding Equity of any such Subsidiary of every class which
shall be duly endorsed or accompanied by stock powers executed in blank (as
applicable), and (ii) such UCC-1 financing statements as Administrative Agent
shall deem necessary or appropriate to grant, evidence and perfect the Liens
required by SECTION 7.1(a)(II) in the issued and outstanding Equity of each such
Subsidiary.
(f)  
1.2.      SECTION GUARANTEES .  Payment and performance of the Obligations shall
be fully guaranteed by each existing or hereafter created or acquired Subsidiary
of Borrower pursuant to a Subsidiary Guaranty.  On the date of creation or
acquisition by Borrower of any Subsidiary, Borrower shall cause such Subsidiary
to execute and deliver to Administrative Agent a Subsidiary Guaranty.

                                    1ARTICLE
                             CONDITIONS PRECEDENT
                                       1
1.1.      SECTION CONDITIONS TO AMENDMENT AND RESTATEMENT AND INITIAL BORROWING
AND PARTICIPATION IN LETTER OF CREDIT EXPOSURE .  The obligation of each Bank to
amend and restate the Existing QRI/NationsBank Credit Agreement in the form of
this Agreement and the obligation of each Bank to loan its Commitment Percentage
of the initial Borrowing made hereunder, and the obligation of Administrative
Agent to issue (or cause another Bank to issue) the initial Letter of Credit
issued hereunder is subject to the satisfaction of each of the following
conditions:

(a)            CLOSING DELIVERIES.  Administrative Agent shall have received
each of the following documents, instruments and agreements, each of which shall
be in form and substance and executed in such counterparts as shall be
acceptable to Administrative Agent and each Bank and each of which shall, unless
otherwise indicated, be dated the Closing Date:
(b)  
(i)            a Note payable to the order of each Bank, each in the amount of
          such Bank's Commitment duly executed by Borrower;

(i)            Mortgages duly executed and delivered by Borrower creating first
          and prior Liens in all Borrowing Base Properties;



          (i)  the Assignments of Notes and Liens duly executed and delivered by
          Existing MSR Agent and Borrower;

          (i)  the Collateral Assignments duly executed by Borrower;

          (i)  such financing statements in form and substance acceptable to
          Administrative Agent and executed by each Credit Party as
          Administrative Agent shall specify to fully evidence and perfect all
          Liens contemplated by the Loan Papers, all of which shall be filed of
          record in such jurisdictions as Administrative Agent shall require in
          its sole direction;

          (i)  a copy of the articles or certificate of incorporation,
          certificate of limited partnership, articles of organization or
          comparable charter documents, and all amendments thereto, of each
          Credit Party accompanied by a certificate that such copy is true,
          correct and complete, and dated within ten (10) days of the Closing
          Date (or within such other period as acceptable to Administrative
          Agent), issued by the appropriate Governmental Authority of the
          jurisdiction of incorporation or organization of each Credit Party,
          and accompanied by a certificate of the Secretary or comparable
          Authorized Officer of each Credit Party that such copy is true,
          correct and complete on the Closing Date;

(i)            a copy of the bylaws, partnership agreement, regulations,
          operating agreement or comparable charter documents, and all
          amendments thereto, of each Credit Party accompanied by a certificate
          of the Secretary or comparable Authorized Officer of each Credit Party
          that such copy is true, correct and complete as of the Closing Date;

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

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

(i)            copies of resolutions or comparable authorizations approving the
          Loan Papers and authorizing the transactions contemplated by this
          Agreement and the other Loan Papers, duly adopted by the Board of
          Directors or comparable authority of each Credit Party accompanied by
          certificates of the Secretary or comparable officer of each Credit
          Party that such copies are true and correct copies of resolutions duly
          adopted at a meeting of or (if permitted by applicable 



          Law and, if required by such Law, by the bylaws or other charter 
          documents of such Credit Party) by the unanimous written consent of 
          the Board of Directors of each Credit Party, and that such resolutions
          constitute all the resolutions adopted with respect to such 
          transactions, have not been amended, modified, or revoked in any 
          respect, and are in full force and effect as of the Closing Date;

(i)            an opinion of Cantey & Hanger, L.L.P., special counsel for
          Borrower dated the Closing Date, favorably opining as to the
          enforceability of each of the Loan Papers and otherwise in form and
          substance satisfactory to Administrative Agent;

(i)            an opinion of Loomis, Ewert, Parsley, Davis & Gotting, special
          Michigan counsel for Administrative Agent, dated the Closing Date,
          favorably opinion as to the enforceability of the Mortgages in
          Michigan and otherwise in form and substance satisfactory to
          Administrative Agent;

          (i)  an opinion of Herschler, Freudenthal, Salzburg, Bonds & Zerga,
          P.C., special Wyoming counsel for Administrative Agent, dated the
          Closing Date, favorably opining as to the enforceability of the
          Mortgages in Wyoming and otherwise in form and substance satisfactory
          to Administrative Agent;

          (i)  an opinion of Crowley, Haughey, Hanson, Toole & Dietrich, special
          Montana counsel for Administrative Agent, dated the Closing Date,
          favorably opining as to the enforceability of the Mortgages and the
          Assignments of Notes and Liens (as applicable) in Montana and
          otherwise in form and substance satisfactory to Administrative Agent;

(i)            a certificate signed by an Authorized Officer of Borrower stating
          that (a) the representations and warranties contained in this
          Agreement and the other Loan Papers are true and correct in all
          respects, and (b) no Default or Event of Default has occurred and is
          continuing, and (c) all conditions set forth in this SECTION 8.1 and
          SECTION 8.2 have been satisfied;
(ii)           a Certificate of Ownership Interests signed by an Authorized
          Officer of Borrower in the form of EXHIBIT G attached hereto;

(i)            certificates from Borrower's insurance broker setting forth the
          insurance maintained by Borrower, stating that such insurance is in
          full force and effect, that all premiums due have been paid and
          stating that such insurance is adequate and complies with the
          requirements of SECTION 10.6;

          (i)  a copy of each of the Closing Documents accompanied by a
          certificate executed by an Authorized Officer of Borrower certifying
          that (A) such copies are accurate and complete and represent the
          complete understanding and agreement of the 



          parties thereto, (B) no material right or obligation of any party 
          thereto has been modified, amended or waived, and (C) subject only to 
          funding the initial Borrowing to be made hereunder, the Closing 
          Transactions have been consummated on the terms set forth in such 
          Closing Documents;

          (i)  a report or reports in form, scope and detail acceptable to
          Administrative Agent and Banks setting forth the results of a review
          of Borrower's Mineral Interests (after giving effect to the Closing
          Transactions) and other operations, which report(s) shall not reflect
          the existence of facts or circumstances which would constitute a
          material violation of any Applicable Environmental Law or which are
          likely to result in a material liability to any Credit Party, and/or
          otherwise reveal any condition or circumstance which would reflect
          that the representations and warranties contained in SECTION 9.14
          hereof are inaccurate in any respect; and

(i)            copies of the Merger Certificate filed with the Secretary of
          State of Delaware, together with such certificates, affidavits or
          other instruments suitable for recording same in such jurisdictions as
          Administrative Agent shall require, certifying or otherwise evidencing
          that such copies are accurate and complete copies of the Merger
          Certificate as so filed.

(a)            CLOSING TRANSACTIONS.  Subject only to disbursement and
application of the initial Borrowing, the Closing Transactions shall have
occurred (or Administrative Agent shall be satisfied that such transactions will
occur simultaneously therewith).  Without limiting the foregoing, each of the
following shall have occurred (or Administrative Agent shall be satisfied that
each of the following shall occur simultaneously therewith):
(b)  
(i)            the Merger shall have been completed pursuant to the terms of the
          Merger Documents, and pursuant thereto the Certificate of Merger shall
          have been duly filed with the Secretary of State of Delaware;

(i)            the MSR/Paribas Credit Agreement shall have been terminated and
          all obligations and Debt thereunder shall have been refinanced in full
          with proceeds of the Loan and all Liens securing payment and
          performance of such Debt and obligations shall have been assigned to
          Administrative Agent pursuant to the Assignments of Notes and Liens;
          and

(i)            all fees and expenses of Administrative Agent and its Affiliates
          in connection with the credit facility provided herein shall have been
          paid.

(a)            TITLE REVIEW.  Administrative Agent or its counsel shall have
completed a review of title (including opinions of title) with respect to the
Required Reserve Value of all Borrowing Base Properties, and such review shall
not have revealed any condition or circumstance which 



would reflect that the representations and warranties contained in SECTION 9.9 
hereof are inaccurate in any respect.
(b)  
(i)            NO MATERIAL ADVERSE CHANGE.  In the sole discretion of each Bank,
no Material Adverse Change shall have occurred  since September 30, 1998 with
respect to Borrower or its Subsidiaries (including, without limitation, no
Material Adverse Change with respect to any facts or information regarding such
Persons as represented to any Agent or any Bank on or prior to the Closing Date)
or  since September 30, 1998 with respect to MSR or its Subsidiaries (including,
without limitation, no Material Adverse Change with respect to any facts or
information regarding such Persons as represented to any Agent or any Bank on or
prior to the Closing Date).
(ii) 
(c)            NO LEGAL PROHIBITION.  The transactions contemplated by this
Agreement  shall be permitted by applicable Law and regulation and shall not
subject any Agent, any Bank, or any Credit Party to any Material Adverse Change.
(d)  
(e)            NO LITIGATION.  No litigation, arbitration or similar proceeding
shall be pending or threatened which calls into question the validity or
enforceability of this Agreement, the other Loan Papers or the transactions
contemplated hereby or thereby.
(f)  
(g)            CLOSING FEES.  Borrower shall have paid to Administrative Agent
for the ratable benefit of each Bank, and shall have paid to Administrative
Agent and its Affiliates (for its own account), the fees to be paid on the
Closing Date pursuant to SECTION 3.9.
(h)  
(i)            OTHER MATTERS.  All matters related to this Agreement, the other
Loan Papers, the Closing Documents, the Closing Transactions and the Credit
Parties shall be acceptable to each Bank in its sole discretion, and each Credit
Party shall have delivered to Administrative Agent and each Bank such evidence
as they shall request to substantiate any matters related to this Agreement and
the other Loan Papers, as Administrative Agent or any Bank shall request.
(j)  
(k)       Upon satisfaction of each of the conditions set forth in this SECTION
8.1, Borrower and Administrative Agent shall execute the Certificate of
Effectiveness.  Upon the execution and delivery of the Certificate of
Effectiveness, the Existing QRI/NationsBank Credit Agreement shall automatically
and completely be amended and restated on the terms set forth herein without
necessity of any other action on the part of any Bank, any Agent or Borrower. 
Until execution and delivery of the Certificate of Effectiveness, the Existing
QRI/NationsBank Credit Agreement shall remain in full force and effect in
accordance with its terms.  Each Bank hereby authorizes Administrative Agent to
execute the Certificate of Effectiveness on its behalf and acknowledges and
agrees that the execution of the Certificate of Effectiveness by Administrative
Agent shall be binding on each such Bank.
(l)  
1.2.      SECTION CONDITIONS TO EACH BORROWING AND EACH LETTER OF CREDIT .  The
obligation of each Bank to loan its Commitment Percentage of each Borrowing and
the obligation of 



Administrative Agent to issue a Letter of Credit on the date such Letter of 
Credit is to be issued is subject to the further satisfaction of the following 
conditions:
1.3. 
(a)            timely receipt by Administrative Agent of a Request for Borrowing
or a Request for Letter of Credit (as applicable);
(b)  
(c)            immediately before and after giving effect to such Borrowing or
issuance of such Letter of Credit, no Default or Event of Default shall have
occurred and be continuing and the funding of such Borrowing or the issuance of
the requested Letter of Credit (as applicable) shall not cause a Default or
Event of Default;
(d)  
(e)            the representations and warranties of each Credit Party contained
in this Agreement and the other Loan Papers shall be true and correct on and as
of the date of such Borrowing or issuance of such Letter of Credit (as
applicable);
(f)  
(g)            the amount of the requested Borrowing or the amount of the
requested Letter of Credit (as applicable) shall not exceed the Availability;
(h)  
(i)            no Material Adverse Change shall have occurred; and
(j)  
(k)            the funding of such Borrowing or the issuance of such Letter of
Credit (as applicable) shall be permitted by applicable Law.
(l)  
(m)  The funding of each Borrowing and the issuance of each Letter of Credit
hereunder shall be deemed to be a representation and warranty by Borrower on the
date of such Borrowing and the date of issuance of each Letter of Credit as to
the facts specified in SECTIONS 8.2(b) through (f).
(n)  
1.4.      SECTION MATERIALITY OF CONDITIONS .  Each condition precedent herein
is material to the transactions contemplated herein, and time is of the essence
in respect of each thereof.
1.5. 
1.6.      SECTION TERMINATION OF AGREEMENT .  Notwithstanding anything to the
contrary contained in this Agreement (including, without limitation, SECTION 3.1
hereof) or in any other Loan Paper, if all the conditions precedent set forth in
SECTION 8.1 hereof, including, without limitation, the execution and delivery of
the Certificate of Effectiveness, have not been consummated on or prior to
March 31, 1999, Required Banks may, by notice to Administrative Agent and
Borrower, terminate this Agreement and the Total Commitment (and the Commitment
of each Bank) as of any date specified in such notice (the "EARLY TERMINATION
DATE"), whereupon this Agreement and the Total Commitment (and the Commitment of
each Bank) shall terminate, and all accrued but unpaid fees hereunder and all
other outstanding Obligations shall be due and payable in full on the Early
Termination Date.
1.7. 



                                   1ARTICLE

                         REPRESENTATIONS AND WARRANTIES
                                       1
     Borrower represents and warrants to Administrative Agent and each Bank that
each of the following statements is true and correct on the date hereof, will be
true and correct on the Closing Date after giving effect to the Closing
Transactions, and will be true and correct on the occasion of each Borrowing and
the issuance of each Letter of Credit:

1.1.      SECTION EXISTENCE AND POWER .  Each Credit Party (a) is a corporation,
partnership or limited liability company duly incorporated or organized (as
applicable), validly existing and in good standing under the laws of its
jurisdiction of incorporation or organization, (b) has all corporate,
partnership or limited liability company power (as applicable) and all material
governmental licenses, authorizations, consents and approvals required to carry
on its businesses as now conducted and as proposed to be conducted, and (c) is
duly qualified to transact business as a foreign corporation, partnership or
limited liability company in each jurisdiction where a failure to be so
qualified could result in a Material Adverse Change.
1.2. 
1.3.      SECTION CREDIT PARTY AND GOVERNMENTAL AUTHORIZATION; CONTRAVENTION
 .  The execution, delivery and performance of this Agreement and the other Loan
Papers by each Credit Party (to the extent each Credit Party is a party to this
Agreement and such Loan Papers) are within such Credit Party's corporate,
partnership or limited liability company powers, when executed will be duly
authorized by all necessary corporate, partnership or limited liability company
action, require no action by or in respect of, or filing with, any Governmental
Authority and do not contravene, or constitute a default under, any provision of
applicable Law (including, without limitation, the Margin Regulations) or of the
articles or certificate of incorporation, bylaws, regulations, partnership
agreement or comparable charter documents of any Credit Party or of any
agreement, judgment, injunction, order, decree or other instrument binding upon
any Credit Party or result in the creation or imposition of any Lien on any
asset of any Credit Party other than the Liens securing the Obligations.
1.4. 
1.5.      SECTION BINDING EFFECT .  This Agreement constitutes a valid and
binding agreement of Borrower; the other Loan Papers when executed and delivered
in accordance with this Agreement, will constitute valid and binding obligations
of each Credit Party executing the same; and each Loan Paper is, or when
executed and delivered will be, enforceable against each Credit Party which
executes the same in accordance with its terms except as (i) the enforceability
thereof may be limited by bankruptcy, insolvency or similar Laws affecting
creditors rights generally, and (ii) the availability of equitable remedies may
be limited by equitable principles of general applicability.
(a)       SECTION FINANCIAL INFORMATION .  The most recent annual audited
consolidated balance sheet of Borrower and the related consolidated statements
of operations and cash flows for the Fiscal Year then ended, copies of which
have been delivered to each Bank, fairly present, in 



conformity with GAAP, the consolidated financial position of Borrower as of 
the end of such Fiscal Year and its consolidated results of operations and 
cash flows for such Fiscal Year.
(b)  
(c)            The most recent quarterly unaudited consolidated balance sheet of
Borrower delivered to Banks, and the related unaudited consolidated statements
of operations and cash flows for the portion of Borrower's Fiscal Year then
ended, fairly present, in conformity with GAAP applied on a basis consistent
with the financial statements referred to in SECTION 9.4(a), the consolidated
financial position of Borrower as of such date and its consolidated results of
operations and cash flows for such portion of Borrower's Fiscal Year.
(d)  
(e)            The most recent annual audited consolidated balance sheet of MSR
and the related consolidated statements of operations and cash flows for the
Fiscal Year then ended, copies of which have been delivered to each Bank, fairly
present, in conformity with GAAP, the consolidated financial position of MSR as
of the end of such Fiscal Year and its consolidated results of operations and
cash flows for such Fiscal Year.
(f)  
(g)            The most recent quarterly unaudited consolidated balance sheet of
MSR delivered to Banks, and the related unaudited consolidated statements of
operations and cash flows for the portion of MSR's Fiscal Year then ended,
fairly present, in conformity with GAAP applied on a basis consistent with the
financial statements referred to in SECTION 9.4(c), the consolidated financial
position of MSR as of such date and its consolidated results of operations and
cash flows for such portion of MSR's Fiscal Year.
(h)  
(i)            Except as disclosed in writing to Banks prior to the execution
and delivery of this Agreement, since  September 30, 1998, no Material Adverse
Change has occurred with respect to Borrower or its Subsidiaries (including,
without limitation, no Material Adverse Change with respect to any facts or
information regarding such Persons as represented to any Agent or any Bank on or
prior to the Closing Date), and  September 30, 1998, no Material Adverse Change
has occurred with respect to MSR or its Subsidiaries (including, without
limitation, no Material Adverse Change with respect to any facts or information
regarding such Persons as represented to any Agent or any Bank on or prior to
the Closing Date).
(ii) 
(i)            After giving effect to the transactions contemplated by this
Agreement (including the Closing Transactions), (i) the fair value of the
property of each Credit Party is greater than the total amount of liabilities,
including, without limitation, contingent liabilities, of such Credit Party,
(ii) the present fair saleable value of the assets of each Credit Party is not
less than the amount that will be required to pay the liability of each Credit
Party on its debts as they become absolute and matured, (iii) each Credit Party
is able to realize upon its assets and pay its debts and other liabilities,
contingent obligations and other commitments as they mature in the normal course
of business, (iv) no Credit Party intends to, and no Credit Party believes that
it will, incur debts or liabilities beyond its ability to pay as such debts and
liabilities mature, and (v) no Credit Party is engaged in a business or
transaction, and no Credit Party is about to engage in a business or transaction
for which such Credit Party's property would constitute unreasonably small
capital 



after giving due consideration to the prevailing practice in the industry in 
which such Credit Party is engaged.
(j)  
1.6.      SECTION LITIGATION .  Except for matters disclosed on SCHEDULE 3
attached hereto, there is no action, suit or proceeding pending against, or to
the knowledge of any Credit Party, threatened against or affecting any Credit
Party before any Governmental Authority in which there is a reasonable
possibility of an adverse decision which could result in a Material Adverse
Change or which could in any manner draw into question the validity of the Loan
Papers.
1.7. 
1.8.      SECTION ERISA .  No Credit Party nor any ERISA Affiliate of any Credit
Party maintains or has ever maintained or been obligated to contribute to any
Plan covered by Title IV of ERISA or subject to the funding requirements of
Section 412 of the Code or Section 302 of ERISA.  Each Plan maintained by any
Credit Party or any ERISA Affiliate of any Credit Party is in compliance in all
material respects with all applicable Laws.  Except in such instances where an
omission or failure would not result in a Material Adverse Change, (a) all
returns, reports and notices required to be filed with any regulatory agency
with respect to any Plan have been filed timely, and (b) no Credit Party nor any
ERISA Affiliate of any Credit Party has failed to make any contribution or pay
any amount due or owing as required by the terms of any Plan.  There are not
pending or, to the best of Borrower's knowledge, threatened claims, lawsuits,
investigations or actions (other than routine claims for benefits in the
ordinary course) asserted or instituted against, and no Credit Party nor any
ERISA Affiliate of any Credit Party has knowledge of any threatened litigation
or claims against, the assets of any Plan or its related trust or against any
fiduciary of a Plan with respect to the operation of such Plan that are likely
to result in liability of any Credit Party resulting in a Material Adverse
Change.  Except in such instances where an omission or failure would not result
in a Material Adverse Change, each Plan that is intended to be "qualified"
within the meaning of section 401(a) of the Code is, and has been during the
period from its adoption to date, so qualified, both as to form and operation
and all necessary governmental approvals, including a favorable determination as
to the qualification under the Code of such Plan and each amendment thereto,
have been or will be timely obtained.  No Credit Party nor any ERISA Affiliate
of any Credit Party has engaged in any prohibited transactions, within the
meaning of section 406 of ERISA or section 4975 of the Code, in connection with
any Plan which would result in liability of any Credit Party resulting in a
Material Adverse Change.  No Credit Party nor any ERISA Affiliate of any Credit
Party maintains or contributes to any Plan that provides a post-employment
health benefit, other than a benefit required under Section 601 of ERISA, or
maintains or contributes to a Plan that provides health benefits that is not
fully funded except where the failure to fully fund such Plan would not result
in a Material Adverse Change.  No Credit Party nor any ERISA Affiliate of any
Credit Party maintains, has established or has ever participated in a multiple
employer welfare benefit arrangement within the meaning of section 3(40)(A) of
ERISA.
1.9. 
1.10.          SECTION TAXES AND FILING OF TAX RETURNS .  Each Credit Party has
filed all tax returns required to have been filed and has paid all Taxes shown
to be due and payable on such returns, including interest and penalties, and all
other Taxes which are payable by such party, to the 



extent the same have become due and payable.  No Credit Party knows of any 
proposed material Tax assessment against it and all Tax liabilities of each 
Credit Party are adequately provided for.  Except as disclosed in writing to 
Banks prior to the date hereof, no income tax liability of any Credit Party 
has been asserted by the Internal Revenue Service or other Governmental 
Authority for Taxes in excess of those already paid.
1.11.     
1.12.          SECTION OWNERSHIP OF PROPERTIES GENERALLY .  Each Credit Party
has good and valid fee simple or leasehold title to all material properties and
assets purported to be owned by it, including, without limitation, all assets
reflected in the balance sheets referred to in SECTION 9.4 (a) and all assets
which are used by the Credit Parties in the operation of their respective
businesses, and none of such properties or assets is subject to any Lien other
than Permitted Encumbrances.
1.13.     
1.14.          SECTION MINERAL  Interests.  The Property Description is an
accurate and complete description of all Borrowing Base Properties on the
Closing Date.  Subject only to Immaterial Title Deficiencies (as herein
defined), after giving effect to the Closing Transactions, Borrower will have
good and defensible title to all Mineral Interests described in the Reserve
Report, including, without limitation, all Borrowing Base Properties, free and
clear of all Liens except for Permitted Encumbrances.   Subject only to
Immaterial Title Deficiencies, all Mineral Interests described in the Reserve
Report are valid, subsisting, and in full force and effect, and all rentals,
royalties, and other amounts due and payable in respect thereof have been duly
paid.  Without regard to any consent or non-consent provisions of any joint
operating agreement covering any of Borrower's Proved Mineral Interests, after
giving effect to the Closing Transactions, but subject to Immaterial Title
Deficiencies, Borrower's share of (a) the costs for each Proved Mineral Interest
described in the Reserve Report is not greater than the decimal fraction set
forth in the Reserve Report, before and after payout, as the case may be, and
described therein by the respective designations "working interests," "WI,"
"gross working interest," "GWI," or similar terms, and (b) production from,
allocated to, or attributed to each such Proved Mineral Interest is not less
than the decimal fraction set forth in the Reserve Report, before and after
payout, as the case may be, and described therein by the designations "net
revenue interest," "NRI," or similar terms.  As used herein, the term
"IMMATERIAL TITLE DEFICIENCIES" means minor defects or deficiencies in title
which do not effect, in the aggregate, more than two percent (2%) (by value) of
all Borrowing Base Properties.  Each well drilled in respect of each Proved
Producing Mineral Interest described in the Reserve Report (y) is capable of,
and is presently, producing Hydrocarbons in commercially profitable quantities,
and after giving effect to the Closing Transactions, Borrower will receive
payments on a current basis for its share of production, with no funds in
respect of any thereof held in suspense, other than any such funds held in
suspense pending delivery of appropriate division orders, and (z) has been
drilled, bottomed, completed, and operated in compliance with all applicable
Laws and no such well which is currently producing Hydrocarbons is subject to
any penalty in production by reason of such well having produced in excess of
its allowable production.
1.15.     



1.16.          SECTION LICENSES, PERMITS, ETC .  Each Credit Party possesses
such valid franchises, certificates of convenience and necessity, operating
rights, licenses, permits, consents, authorizations, exemptions and orders of
Governmental Authorities, as are necessary to carry on its business as now
conducted and as proposed to be conducted, except to the extent a failure to
obtain any such item would not result in a Material Adverse Change.
1.17.          SECTION COMPLIANCE WITH LAW .  The business and operations of the
Credit Parties have been and are being conducted in accordance with all
applicable Laws other than violations of Laws which do not (either individually
or collectively) result in a Material Adverse Change.
1.18.     
1.19.          SECTION FULL DISCLOSURE .  All information heretofore furnished
by each Credit Party to Administrative Agent or any Bank for purposes of or in
connection with this Agreement, any Loan Paper or any transaction contemplated
hereby or thereby is, and all such information hereafter furnished by or on
behalf of any Credit Party to Administrative Agent or any Bank will be, true,
complete and accurate in every material respect.  The Credit Parties have
disclosed or have caused to be disclosed to Banks in writing any and all facts
(other than facts of general public knowledge) which might reasonably be
expected to result in a Material Adverse Change.
1.20.     
1.21.          SECTION ORGANIZATIONAL STRUCTURE; NATURE OF BUSINESS .  The
Credit Parties are engaged only in the business of acquiring, exploring,
developing and operating Mineral Interests and the production, marketing,
processing and transporting of Hydrocarbons therefrom.  SCHEDULE 4 hereto
accurately reflects (i) the jurisdiction of incorporation or organization of
each Credit Party, (ii) each jurisdiction in which each Credit Party is
qualified to transact business as a foreign corporation, foreign partnership or
foreign limited liability company, (iii) the authorized, issued and outstanding
Equity of each Credit Party (and the legal and beneficial owners of such Equity)
immediately prior to giving effect to the Closing Transactions, (iv) the
authorized, issued and outstanding Equity of each Credit Party (and the number
of shares owned by each member of the Darden Group) immediately after giving
effect to the Closing Transactions, (v) all outstanding warrants, options,
subscription rights, convertible securities or other rights to purchase Equity
of each Credit Party immediately prior to giving effect to the Closing
Transactions, and (vi) all outstanding warrants, options, subscription rights,
convertible securities or other rights to purchase Equity of each Credit Party
owned by, or otherwise in favor of, each member of the Darden Group immediately
after giving effect to the Closing Transactions.
1.22.     
1.23.          SECTION ENVIRONMENTAL MATTERS .  Except for matters disclosed on
SCHEDULE 5 hereto, and after giving effect to the Closing Transactions, no
operation conducted by any Credit Party and no real or personal property now or
previously owned or leased by any Credit Party (including, without limitation,
Mineral Interests) and no operations conducted thereon, and to any Credit
Parties' knowledge, no operations of any prior owner, lessee or operator of any
such properties, is or has been in violation of any Applicable Environmental Law
other than violations which neither individually nor in the aggregate could
result in a Material Adverse Change.  Except for matters disclosed on SCHEDULE 5
hereto, and after giving effect to the Closing Transactions, no Credit Party,
nor any such property nor operation is the subject of any existing, pending or,
to any Credit Parties' knowledge, threatened Environmental Complaint which
could, 



individually or in the aggregate, result in a Material Adverse Change. All 
notices, permits, licenses, and similar authorizations, required to be 
obtained or filed (after giving effect to the Closing Transactions) in 
connection with the ownership of each tract of real property or operations of 
any Credit Party thereon and each item of personal property owned, leased or 
operated by any Credit Party, including, without limitation, notices, 
licenses, permits and authorizations required in connection with any past or 
present treatment, storage, disposal, or release of Hazardous Substances into 
the environment, have been duly obtained or filed except to the extent the 
failure to obtain or file such notices, licenses, permits and authorizations 
would not result in a Material Adverse Change.  All Hazardous Substances, 
generated at each tract of real property and by each item of personal 
property owned, leased or operated by any Credit Party (after giving effect 
to the Closing Transactions) have been transported, treated, and disposed of 
only by carriers or facilities maintaining valid permits under RCRA (as 
hereinafter defined) and all other Applicable Environmental Laws for the 
conduct of such activities except in such cases where the failure to obtain 
such permits could not, individually or in the aggregate, result in a 
Material Adverse Change.  Except for matters disclosed on SCHEDULE 5 hereto, 
and after giving effect to the Closing Transactions, there have been no 
Hazardous Discharges which were not in compliance with Applicable 
Environmental Laws other than Hazardous Discharges which would not, 
individually or in the aggregate, result in a Material Adverse Change.  
Except for matters disclosed on SCHEDULE 5 hereto, and after giving effect to 
the Closing Transactions, no Credit Party nor any Subsidiary of any Credit 
Party has any contingent liability in connection with any Hazardous Discharge 
which could reasonably be expected to result in a Material Adverse Change.  
As used in this SECTION 9.14, the term "RCRA" shall mean the Resource 
Conservation and Recovery Act of 1976, as amended by the Used Oil Recycling 
Act of 1980, the Solid Waste Recovery Act of 1976, as amended by the Solid 
Waste Disposal Act of 1980, and the Hazardous and Solid Waste Amendments of 
1984, as the same may be further amended and in effect from time to time.
1.24.     
1.25.          SECTION BURDENSOME OBLIGATIONS .  No Credit Party, nor any of the
properties of any Credit Party is subject to any Law or any pending or
threatened change of Law or subject to any restriction under its articles (or
certificate) of incorporation, bylaws, regulations, partnership agreement or
comparable charter documents or under any agreement or instrument to which any
Credit Party or by which any Credit Party or any of their properties may be
subject or bound, which is so unusual or burdensome as to be likely in the
foreseeable future to result in a Material Adverse Change.  Without limiting the
foregoing, no Credit Party is a party to or bound by any agreement or subject to
any order of any Governmental Authority which prohibits or restricts in any way
the right of such Credit Party to make Distributions.
1.26.     
1.27.          SECTION FISCAL YEAR .  Borrower's Fiscal Year is January 1
through December 31.
1.28.     
1.29.          SECTION NO DEFAULT .  Neither a Default nor an Event of Default
has occurred or will exist after giving effect to the transactions contemplated
by this Agreement or the other Loan Papers.
1.30.     



1.31.          SECTION GOVERNMENT REGULATION .  No Credit Party is subject to
regulation under the Public Utility Holding Company Act of 1935, the Federal
Power Act, the Interstate Commerce Act (as any of the preceding acts have been
amended), the Investment Company Act of 1940 or any other Law which regulates
the incurring by such Credit Party of Debt, including, but not limited to Laws
relating to common contract carriers or the sale of electricity, gas, stream,
water or other public utility services.
1.32.          SECTION INSIDER .  No Credit Party is, and no Person having
"control" (as that term is defined in 12 U.S.C. Section 375(b) or regulations
promulgated thereunder) of any Credit Party is an "executive officer,"
"director" or "shareholder" of any Bank or any bank holding company of which any
Bank is a Subsidiary or of any Subsidiary of such bank holding company.
1.33.     
1.34.          SECTION GAS BALANCING AGREEMENTS AND ADVANCE PAYMENT CONTRACTS . 
On the date of this Agreement and on the Closing Date, (a) there is no Material
Gas Imbalance, and (b) the aggregate amount of all Advance Payments received by
any Credit Party under Advance Payment Contracts which have not been satisfied
by delivery of production does not exceed $250,000.
1.35.     
1.36.          SECTION CLOSING DOCUMENTS; MANAGEMENT AGREEMENT.   Borrower has
provided (or on the Closing Date Borrower will provide) Administrative Agent
with a true and correct copy of each of the Closing Documents and the Management
Agreement including all amendments and modifications thereto.  No material
rights or obligations of any party to any of such Closing Documents or the
Management Agreement have been (or will be on the Closing Date) waived, and no
Credit Party, nor to the best knowledge of Borrower, any other party to any of
such Closing Documents or the Management Agreement, is (or will be on the
Closing Date) in default of its obligations thereunder.  Each of the Closing
Documents and the Management Agreement is (or will be on the Closing Date) a
valid, binding and enforceable obligation of the parties thereto in accordance
with its terms and is (or will be on the Closing Date) in full force and effect.
Each representation and warranty made by each Credit Party, and to the best
knowledge of Borrower, by each other party to the Closing Documents and the
Management Agreement, in the Closing Documents and the Management Agreement (a)
was true and correct when made, and (b) will be true and correct on the Closing
Date.
1.37.     
1.38.          SECTION YEAR 2000 MATTERS .  Any reprogramming required to permit
the proper functioning (but only to the extent that such proper functioning
would otherwise be impaired by the occurrence of the year 2000) in and following
the year 2000 of computer systems and other equipment containing imbedded
microchips, in either case owned or operated by any Credit Party or used or
relied upon in the conduct of their business (including, to Borrower's
knowledge, any such systems and other equipment supplied by others or with which
the computer systems of any Credit Party interface) and the testing of all such
systems and other equipment as so reprogrammed, has been completed.  The costs
to Borrower and any other Credit Party that have not been incurred as of the
date hereof for such reprogramming and testing and for other reasonably
foreseeable consequences to them of any improper functioning of other computer
systems and equipment containing imbedded microchips due to the occurrence of
the 



year 2000 could not reasonably be expected to result in a Default, Event of 
Default or a Material Adverse Change.  Except for any reprogramming referred 
to above, the computer systems of each Credit Party are and, with ordinary 
course upgrading and maintenance, will continue for the term of this 
Agreement to be, sufficient for the conduct of their business as currently 
conducted.

                                   1ARTICLE
                             AFFIRMATIVE COVENANTS
                                       1
     Borrower covenants and agrees that, so long as any Bank has any 
commitment to lend or participate in Letter of Credit Exposure hereunder or 
any amount payable under any Note remains unpaid or any Letter of Credit 
remains outstanding: 

1.1.      SECTION INFORMATION .  Borrower will deliver, or cause to be
delivered, to each Bank:
1.2. 
(a)            as soon as available and in any event within ninety (90) days
after the end of each Fiscal Year, a consolidated and consolidating balance
sheet of Borrower and each other Credit Party as of the end of such Fiscal Year
and the related consolidated and consolidating statements of income and
statements of cash flow for such Fiscal Year, setting forth in each case in
comparative form the figures for the previous Fiscal Year, all reported by such
Credit Party in accordance with GAAP and audited by a firm of independent public
accountants of nationally recognized standing and acceptable to Administrative
Agent;

(i)             as soon as available and in any event within forty-five (45) 
days after the end of each of the first three (3) Fiscal Quarters of each 
Fiscal Year, consolidated and consolidating balance sheets of Borrower and 
each other Credit Party as of the end of such Fiscal Quarter and the related 
consolidated and consolidating statements of income and statements of cash 
flow for such quarter and for the portion of such Credit Party's Fiscal Year 
ended at the end of such Fiscal Quarter, setting forth in each case in 
comparative form the figures for the corresponding quarter and the 
corresponding portion of such Credit Party's previous Fiscal Year; 

(a)            simultaneously with the delivery of each set of financial 
statements referred to in SECTIONS 10.1(a) and (b), a certificate of a 
Financial Officer of Borrower in the form of EXHIBIT H attached hereto, (i) 
setting forth in reasonable detail the calculations required to establish 
whether Borrower was in compliance with the requirements of ARTICLE XII on 
the date of such financial statements, (ii) stating whether there exists on 
the date of such certificate any Default and, if any Default then exists, 
setting forth the details thereof and the action which Borrower is taking or 
proposes to take with respect thereto, (iii) stating whether or not such 
financial statements fairly reflect in all material respects the results of 
operations and financial condition of Borrower and each other Credit Party as 
of the date of the delivery of such financial statements and for the period 
covered thereby, (iv) setting forth (A) whether as of such date there is a 
Material Gas Imbalance and, if so, setting forth the amount of net gas 
imbalances under Gas Balancing Agreements to which any Credit Party is a 
party or by which any Mineral Interests owned by 



Borrower is bound, and (B) the aggregate amount of all Advance Payments 
received under Advance Payment Contracts to which any Credit Party is a party 
or by which any Mineral Interests owned by Borrower is bound which have not 
been satisfied by delivery of production, if any, and (v) a summary of the 
Hedge Transactions to which each Credit Party is a party on such date;
(b)  
(c)            promptly upon the mailing thereof to the stockholders of any
Credit Party generally, copies of all financial statements, reports and proxy
statements so mailed;
(d)  
(e)            promptly upon the filing thereof, copies of all final
registration statements post effective amendments thereto and annual, quarterly
or special reports which any Credit Party shall have filed with the Securities
and Exchange Commission; PROVIDED, THAT Borrower must deliver, or cause to be
delivered, any annual reports which any Credit Party shall have filed with the
Securities and Exchange Commission, within ninety (90) days after the end of
each Fiscal Year of such Credit Party, and any quarterly reports which any
Credit Party shall have filed with the Securities and Exchange Commission,
within forty-five (45) days after the end of each of the first three (3) Fiscal
Quarters of each Fiscal Year of such Credit Party;
(f)  
(g)            promptly upon receipt of same, any notice or other information
received by any Credit Party indicating (i) any potential, actual or alleged
non-compliance with or violation of the requirements of any Applicable
Environmental Law which could result in liability to any Credit Party for fines,
clean up or any other remediation obligations or any other liability in excess
of $100,000 in the aggregate; (ii) any threatened Hazardous Discharge which
Hazardous Discharge would impose on any Credit Party a duty to report to a
Governmental Authority or to pay cleanup costs or to take remedial action under
any Applicable Environmental Law which could result in liability to any Credit
Party for fines, clean up and other remediation obligations or any other
liability in excess of $100,000 in the aggregate; or (iii) the existence of any
Lien arising under any Applicable Environmental Law securing any obligation to
pay fines, clean up or other remediation costs or any other liability in excess
of $100,000 in the aggregate.  Without limiting the foregoing, each Credit Party
shall provide to Banks promptly upon receipt of same by any Credit Party copies
of all environmental consultants or engineers reports received by any Credit
Party which would render the representations and warranties (or any of them)
contained in SECTION 9.14 untrue or inaccurate in any respect;
(h)  
(i)            in the event any notification is provided to any Bank or
Administrative Agent pursuant to SECTION 10.1(f) hereof or Administrative Agent
or any Bank otherwise learns of any event or condition under which any such
notice would be required, then, upon request of Required Banks, Borrower shall
within thirty (30) days of such request, cause to be furnished to Administrative
Agent and each Bank a report by an environmental consulting firm acceptable to
Administrative Agent and Required Banks, stating that a review of such event,
condition or circumstance has been undertaken (the scope of which shall be
acceptable to Administrative Agent and Required Banks) and detailing the
findings, conclusions and recommendations of 



such consultant; Borrower shall bear all expenses and costs associated with 
such review and updates thereof;
(j)  
(k)            immediately upon any Authorized Officer becoming aware of the
occurrence of any Default, a certificate of an Authorized Officer setting forth
the details thereof and the action which Borrower is taking or proposes to take
with respect thereto; 
(l)  
(m)            no later than March 31 and September 30 of each year, reports of
production volumes, revenue, expenses and product prices for all Mineral
Interests owned by Borrower for the periods of six (6) months ending the
preceding December 31 and June 30, respectively.  Such reports shall be prepared
on an accrual basis and shall be reported on a field by field basis; 
(n)  
(o)            promptly notify Banks of any Material Adverse Change; and
(p)  
(q)            from time to time such additional information regarding the
financial position or business of any Credit Party as Administrative Agent, at
the request of any Bank, may reasonably request.  
(r)  
1.2.      SECTION BUSINESS OF BORROWER .  The sole business of Borrower shall be
the acquisition, exploration, development and operation of Mineral Interests and
the production, marketing, processing and transportation of Hydrocarbons
therefrom.
1.3. 
1.4.      SECTION MAINTENANCE OF EXISTENCE .  Borrower shall, and shall cause
each other Credit Party to, at all times (a) maintain its corporate, partnership
or limited liability company existence in its state of incorporation or
organization, and (b) maintain its good standing and qualification to transact
business in all jurisdictions where the failure to maintain good standing or
qualification to transact business could result in a Material Adverse Change.  
1.5. 
1.6.      SECTION TITLE DATA .  Borrower shall, upon the request of Required
Banks, cause to be delivered to Administrative Agent such title opinions and
other information regarding title to Mineral Interests owned by Borrower and the
perfection and priority of Administrative Agent's Liens therein as are
appropriate to determine the status thereof.
1.7. 
1.8.      SECTION RIGHT OF INSPECTION .  Borrower will permit, and will cause
each other Credit Party to permit, any officer, employee or agent of
Administrative Agent or of any Bank to visit and inspect any of the assets of
any Credit Party, examine each Credit Party's books of record and accounts, take
copies and extracts therefrom, and discuss the affairs, finances and accounts of
each Credit Party with such Credit Party's officers, accountants and auditors,
all at such reasonable times and as often as Administrative Agent or any Bank
may desire, and upon and during the continuance of an Event of Default all at
the expense of Borrower.
1.9. 
1.10.          SECTION MAINTENANCE OF INSURANCE .  Borrower will, and will cause
each other Credit Party to, at all times maintain or cause to be maintained
insurance covering such risks as are 



customarily carried by businesses similarly situated, including, without 
limitation, the following: (a) workmen's compensation insurance; (b) 
employer's liability insurance; (c) comprehensive general public liability 
and property damage insurance; (d) insurance against losses customarily 
insured against as a result of damage by fire, lightning, hail, tornado, 
explosion and other similar risk; and (e) comprehensive automobile liability 
insurance.  All loss payable clauses or provisions in all policies of 
insurance maintained by Borrower pursuant to this SECTION 10.6 shall be 
endorsed in favor of and made payable to Administrative Agent for the ratable 
benefit of Banks, as their interests may appear.  Administrative Agent shall 
have the right, for the ratable benefit of Banks, to collect, and Borrower 
hereby assigns to Administrative Agent for the ratable benefit of Banks, any 
and all monies that may become payable under any such policies of insurance 
by reason of damage, loss or destruction of any property which stands as 
security for the Obligations or any part thereof, and Administrative Agent 
may, at its election, either apply for the ratable benefit of Banks all or 
any part of the sums so collected toward payment of the Obligations, whether 
or not such Obligations are then due and payable, in such manner as 
Administrative Agent may elect, or release same to the applicable Credit 
Party.
1.11.     
1.12.          SECTION PAYMENT OF TAXES AND CLAIMS .  Borrower will, and will
cause each other Credit Party to, pay (a) all Taxes imposed upon it or any of
its assets or with respect to any of its franchises, business, income or profits
before any material penalty or interest accrues thereon and (b) all material
claims (including, without limitation, claims for labor, services, materials and
supplies) for sums which have become due and payable and which by law have or
might become a Lien (other than a Permitted Encumbrance) on any of its assets;
PROVIDED, HOWEVER, no payment of Taxes or claims shall be required if (i) the
amount, applicability or validity thereof is currently being contested in good
faith by appropriate action promptly initiated and diligently conducted in
accordance with good business practices and no material part of the property or
assets of any Credit Party is subject to any pending levy or execution, (ii) the
Credit Parties, as and to the extent required in accordance with GAAP, shall
have set aside on their books reserves (segregated to the extent required by
GAAP) deemed by them to be adequate with respect thereto, and (iii) the Credit
Parties have notified Administrative Agent of such circumstances, in detail
satisfactory to Administrative Agent.
1.13.     
1.14.          SECTION COMPLIANCE WITH LAWS AND DOCUMENTS .  Borrower will, and
will cause each other Credit Party to, comply with all Laws, their respective
certificates (or articles) of incorporation, bylaws, regulations and similar
organizational documents and all Material Agreements to which any Credit Party
is a party, if a violation, alone or when combined with all other such
violations, could result in a Material Adverse Change.
1.15.     
(a)       SECTION OPERATION OF PROPERTIES AND EQUIPMENT .   Borrower will, and
will cause each of its Subsidiaries to, maintain, develop and operate (or use
its best efforts to cause the operator to maintain and operate to the extent
Borrower is not the operator) its Mineral Interests in a good and workmanlike
manner, and observe and comply with all of the terms and provisions, express or
implied, of all oil and gas leases relating to such Mineral Interests so long as
such Mineral 



Interests are capable of producing Hydrocarbons and accompanying elements in 
paying quantities.
(b)  
(c)            Borrower will, and will cause each of its Subsidiaries to, comply
in all respects with all contracts and agreements applicable to or relating to
its Mineral Interest or the production and sale of Hydrocarbons and accompanying
elements therefrom.
(d)  
(e)            Borrower will, and will cause each of its Subsidiaries to, at all
times maintain, preserve and keep all operating equipment used with respect to
its Mineral Interests in proper repair, working order and condition, and make
all necessary or appropriate repairs, renewals, replacements, additions and
improvements thereto so that the efficiency of such operating equipment shall at
all times be properly preserved and maintained; PROVIDED FURTHER THAT no item of
operating equipment need be so repaired, renewed, replaced, added to or
improved, if Borrower shall in good faith determine that such action is not
necessary or desirable for the continued efficient and profitable operation of
the business of such Credit Party.
(f)  
1.16.          SECTION ENVIRONMENTAL LAW COMPLIANCE .  Borrower will, and will
cause each other Credit Party to, comply with all Applicable Environmental Laws,
including, without limitation, (a) all licensing, permitting, notification and
similar requirements of Applicable Environmental Laws, and (b) all provisions of
all Applicable Environmental Laws regarding storage, discharge, release,
transportation, treatment and disposal of Hazardous Substances.  Borrower will,
and will cause each other Credit Party to, promptly pay and discharge when due
all legal debts, claims, liabilities and obligations with respect to any
clean-up or remediation measures necessary to comply with Applicable
Environmental Laws.  
1.17.     
1.18.          SECTION ERISA REPORTING REQUIREMENTS .  Borrower shall furnish,
or cause to be furnished, to Administrative Agent:
1.19.     
(a)       promptly and in any event (i) within thirty (30) days after Borrower
or any ERISA Affiliate receives notice from any regulatory agency of the
commencement of an audit, investigation or similar proceeding with respect to a
Plan, and (ii) within ten (10) days after Borrower or any ERISA Affiliate
contacts the Internal Revenue Service for the purpose of participation in a
closing agreement or any voluntary resolution program with respect to a Plan or
knows or has reason to know that any event with respect to any Plan of Borrower
or any ERISA Affiliate has occurred, a written notice describing such event and
describing what action is being taken or is proposed to be taken with respect
thereto, together with a copy of any notice of event that is given to the PBGC;

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



(c)       notification within thirty (30) days of the effective date thereof of
any material increases in the benefits, or material change in the funding
method, of any existing Plan which is not a multiemployer plan (as defined in
section 4001(a)(3) of ERISA), or the establishment of any material new Plans, or
the commencement of contributions to any Plan to which Borrower or any ERISA
Affiliate was not previously contributing; and
(d)  
(e)       promptly after receipt of written notice of commencement thereof,
notice of all (i) claims made by participants or beneficiaries with respect to
any Plan and (ii) actions, suits and proceedings before any court or
governmental department, commission, board, bureau, agency or instrumentality,
domestic or foreign, affecting Borrower or any ERISA Affiliate with respect to
any Plan, except those which, in the aggregate, if adversely determined could
not result in a Material Adverse Change.
(f)  
1.2.      SECTION ADDITIONAL DOCUMENTS .  Borrower will, and will cause each
other Credit Party (to the extent each is party thereto) to, cure promptly any
defects in the creation and issuance of each Note, and the execution and
delivery of this Agreement and the other Loan Papers and, at Borrower's expense,
Borrower shall promptly and duly execute and deliver to each Bank, and cause
each other Credit Party to promptly and duly execute and deliver to each Bank,
upon reasonable request, all such other and further documents, agreements and
instruments in compliance with or accomplishment of the covenants and agreements
of the Credit Parties in this Agreement and the other Loan Papers as may be
reasonably necessary or appropriate in connection therewith.
1.3. 
1.4.      SECTION ENVIRONMENTAL REVIEW .  Not later than thirty (30) days prior
to the date of any acquisition by any Credit Party of Mineral Interests or
related assets, other than an acquisition of additional interests in Mineral
Interests in which a Credit Party previously held an interest, Borrower shall
deliver to Administrative Agent a report in form, scope and detail acceptable to
Administrative Agent from environmental engineering firms acceptable to
Administrative Agent, which report or reports shall set forth the results of a
Phase I environmental review of such Mineral Interests and related assets.  
1.5. 
1.6.      SECTION REQUIRED PURCHASE CONTRACTS .  Borrower will at all times
during the period commencing on and including the Closing Date and continuing
through and including the Termination Date, maintain contracts for the sale of
at least seventy-five percent (75%) of its gas production to Consumers Power (or
other parties of equal or greater creditworthiness approved by Administrative
Agent and Required Banks) which provide for fixed prices on all gas production
sold that, when averaged in each calendar year, equal or exceed $2.40 per
thousand cubic feet.  Such average shall be calculated for each calendar year by
dividing (i) all revenues under such fixed price contracts for such gas
production, by (ii) the total amount of such gas production, measured in
thousand cubic feet.  For the purpose of determining compliance with the
foregoing, if Borrower enters into floating rate contracts for the sale of its
gas production to Consumers Power (or other parties of equal or greater
creditworthiness approved by Administrative Agent and Required Banks) and at the
same time puts into place Oil and Gas 



Hedge Transactions in equivalent volumes with counterparties approved by 
Administrative Agent and Required Banks which, when netted against such 
floating rate contracts, provide Borrower with a net price equal to or in 
excess of $2.40 per thousand cubic feet, such net price shall be deemed to be 
the fixed price to be used in making the foregoing calculation.
1.7. 
1.8.      SECTION YEAR 2000 COMPATIBILITY .  Borrower will, and will cause each
other Credit Party to, take all actions reasonably necessary to assure that
Borrower's and each such other Credit Party's computer based systems are able to
operate and effectively process data which includes dates on and after January
1, 2000.  At the request of Administrative Agent or any Bank, Borrower and each
other Credit Party shall provide reasonable assurances satisfactory to
Administrative Agent and any such Bank of Borrower's and each such other Credit
Party's year 2000 compatibility.

                                    1ARTICLE
                               NEGATIVE COVENANTS
                                       1
     Borrower agrees that, so long as any Bank has any commitment to lend or
participate in Letter of Credit Exposure  hereunder or any amount payable under
any Note remains unpaid or any Letter of Credit remains outstanding: 

1.1.      SECTION INCURRENCE OF DEBT .  Borrower will not, nor will Borrower
permit any other Credit Party to, incur, become or remain liable for any Debt
other than the Obligations; PROVIDED, THAT, at any time when the Outstanding
Credit is less than the Conforming Borrowing Base and no Default or Event of
Default has occurred which is continuing, (a) Borrower may incur and remain
liable for Non-Recourse Debt to the extent such Non-Recourse Debt has been
specifically approved in writing by Required Banks, and (b) Borrower and its
Subsidiaries may incur and remain liable for other Debt in an aggregate amount
outstanding at any time not to exceed $1,000,000.
1.2. 
1.3.      SECTION RESTRICTED PAYMENTS .  Borrower will not, nor will Borrower
permit any other Credit Party to, directly or indirectly, declare or pay, or
incur any liability to declare or pay, any Restricted Payment.
1.4. 
1.5.      SECTION NEGATIVE PLEDGE .  Borrower will not, nor will Borrower permit
any other Credit Party to, create, assume or suffer to exist any Lien on any of
their respective assets other than Permitted Encumbrances.  Borrower will not,
nor will Borrower permit any other Credit Party to, enter into or become bound
by any agreement (other than this Agreement) that prohibits or otherwise
restricts the right of Borrower or any other Credit Party to create, assume or
suffer to exist any Lien on any of their respective assets in favor of
Administrative Agent for the ratable benefit of Banks.
1.6. 



1.7.      SECTION CONSOLIDATIONS AND MERGERS .  Borrower will not, nor will
Borrower permit any other Credit Party to, consolidate or merge with or into any
other Person.
1.8. 
1.9.      SECTION ASSET DISPOSITIONS .  Borrower will not, nor will Borrower
permit any other Credit Party to, sell, lease, transfer, abandon or otherwise
dispose of any asset other than the sale in the ordinary course of business of
Hydrocarbons produced from Borrower's and any other Credit Party's Mineral
Interests (and not pursuant to Advance Payment Contracts); PROVIDED, THAT, so
long as no Default or Event of Default has occurred which is continuing,
Borrower shall be permitted to sell or dispose of (a) machinery and equipment
which is obsolete or otherwise not necessary or useful in the operation of
Borrower's business, and (b) Mineral Interests during any period between
Scheduled Redeterminations with an aggregate Recognized Value (measured at the
time of such sale or disposition) not in excess of three percent (3%) of the
Conforming Borrowing Base in effect during such period.  Borrower will not sell,
transfer or dispose of, or permit any other Credit Party to sell, transfer or
dispose of, any capital stock or other equity interest in any Subsidiary of
Borrower.
1.10.     
1.11.          SECTION AMENDMENTS TO ORGANIZATIONAL DOCUMENTS; OTHER MATERIAL
AGREEMENTS .  Borrower will not, nor will Borrower permit any other Credit Party
to, enter into or permit any modification or amendment of, or waive any material
right or obligation of any Person under, (a) its certificate or articles of
incorporation, bylaws, partnership agreement, regulations or other
organizational documents other than amendments, modifications and waivers which
could not, individually or in the aggregate, result in a Material Adverse
Change, (b) the Closing Documents, (c) the Section 29 Documents, (d) the
Management Agreement, or (e) the Consumers Power Contract.
1.12.     
1.13.          SECTION USE OF  PROCEEDS .  The proceeds of Borrowings will not
be used for any purpose other than (a) working capital, (b) to finance the
acquisition, exploration and development of Mineral Interests and related
capital assets, and (c) to refinance the obligations outstanding under the
Existing Credit Agreements.  None of such proceeds (including, without
limitation, proceeds of Letters of Credit issued hereunder) will be used,
directly or indirectly, for the purpose, whether immediate, incidental or
ultimate, of purchasing or carrying any Margin Stock, and none of such proceeds
will be used in violation of applicable Law (including, without limitation, the
Margin Regulations).  Letters of Credit will be issued hereunder only for the
purpose of securing bids, tenders, bonds, contracts and other obligations
entered into in the ordinary course of Borrower's business.   Without limiting
the foregoing, no Letters of Credit will be issued hereunder for the purpose of
providing credit enhancement with respect to any Debt or equity security of any
Credit Party or to secure any Credit Party's obligations with respect to Hedge
Transactions other than Hedge Transactions with a Bank.
1.14.     
1.15.          SECTION INVESTMENTS .  Borrower will not, nor will Borrower
permit any other Credit Party to, directly or indirectly, make or have
outstanding any Investment other than Permitted Investments.  
1.16.      



1.17.          SECTION TRANSACTIONS WITH AFFILIATES .  Borrower will not, nor
will Borrower permit any other Credit Party to, engage in any transaction with
an Affiliate unless such transaction is as favorable to such party as could be
obtained in an arm's length transaction with an unaffiliated Person in
accordance with prevailing industry customs and practices.
1.18.     
1.19.          SECTION ERISA.   Except in such instances where an omission or
failure would not result in a Material Adverse Change, Borrower will not, nor
will Borrower permit any other Credit Party to (a) take any action or fail to
take any action which would result in a violation of ERISA, the Code or other
Laws applicable to the Plans maintained or contributed to by it or any ERISA
Affiliate, or (b) modify the term of, or the funding obligations or contribution
requirements under any existing Plan, establish a new Plan, or become obligated
or incur any liability under a Plan that is not maintained or contributed to by
Borrower or any ERISA Affiliate as of the Closing Date.
1.20.     
1.21.          SECTION HEDGE TRANSACTIONS .  With the exception of Oil and Gas
Hedge Transactions entered into pursuant to SECTION 9.14, Borrower will not, nor
will Borrower permit any other Credit Party to, enter into Oil and Gas Hedge
Transactions which would cause the volume of Hydrocarbons with respect to which
a settlement payment is calculated under such Oil and Gas Hedge Transactions to
exceed seventy-five percent (75%) of Borrower's anticipated production from
Proved Producing Mineral Interests during the period from the immediately
preceding settlement date (or the commencement of such Hedge Transaction if
there is no prior settlement date) to such settlement date. Borrower shall not
enter into or consent to, or permit Mercury to enter into or consent to, any
amendment, modification, cancellation or termination of the Consumers Power
Contract and will at all times perform all of its obligations thereunder and
take all other actions necessary to cause such contract to be maintained.
1.22.     
1.23.          SECTION FISCAL YEAR .  Borrower will not, and Borrower will not
permit any other Credit Party to, change its Fiscal Year.
1.24.     
1.25.          SECTION CHANGE IN BUSINESS .  Borrower will not, nor will
Borrower permit any other Credit Party to, engage in any business other than the
businesses engaged in by such parties on the date hereof as described in SECTION
9.13 hereof.
1.26.     
                                       
                                    1ARTICLE
                              FINANCIAL COVENANTS

     Borrower agrees that so long as any Bank has any commitment to lend or 
participate in Letter of Credit Exposure hereunder or any amount payable 
under any Note remains unpaid or any Letter of Credit remains outstanding, 
Borrower will not permit its ratio of Consolidated Current Assets to its 
Consolidated Current Liabilities to be less than 1.0 to 1.0 at any time.


                                       
                                   1ARTICLE
                                   DEFAULTS

1.1.      SECTION EVENTS OF DEFAULT .  If one or more of the following events 
(collectively "EVENTS OF DEFAULT" and individually an "EVENT OF DEFAULT") 
shall have occurred and be continuing:

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

(a)            Borrower shall fail to observe or perform any covenant or
agreement contained in ARTICLE XI or ARTICLE XII of this Agreement; 
(b)  
(c)            any Credit Party shall fail to observe or perform any covenant or
agreement contained in this Agreement or any other Loan Paper (other than those
referenced in SECTIONS 13.1(a), (b) and (c)) and such failure continues for a
period of twenty (20) days after the earlier of (i) the date any Authorized
Officer of any Credit Party acquires knowledge of such failure, or (ii) written
notice of such failure has been given to any Credit Party by Administrative
Agent or any Bank;
(d)  
(e)            any representation, warranty, certification or statement made or
deemed to have been made by any Credit Party in any certificate, financial
statement or other document delivered pursuant to this Agreement shall prove to
have been incorrect in any material respect when made; 
(f)  
(g)            any Credit Party shall fail to make any payment when due on any
Debt of such Person in a principal amount equal to or greater than $250,000 or
any other event or condition shall occur which (i) results in the acceleration
of the maturity of any such Debt, or (ii) entitles the holder of such Debt to
accelerate the maturity thereof;
(h)  
(i)            any Credit Party shall commence a voluntary case or other
proceeding seeking liquidation, reorganization or other relief with respect to
itself or its debts under any bankruptcy, insolvency or other similar Law now or
hereafter in effect or seeking the appointment of a trustee, receiver,
liquidator, custodian or other similar official of it or any substantial part of
its property, or shall consent to any such relief or to the appointment of or
taking possession by any such official in an involuntary case or other
proceeding commenced against it, or shall make a general assignment for the
benefit of creditors, or shall fail generally to pay its debts as they 



become due, or shall take any corporate, partnership or limited liability 
company action to authorize any of the foregoing; 
(j)  
(k)            an involuntary case or other proceeding shall be commenced
against any Credit Party seeking liquidation, reorganization or other relief
with respect to it or its debts under any bankruptcy, insolvency or other
similar Law now or hereafter in effect or seeking the appointment of a trustee,
receiver, liquidator, custodian or other similar official of it or any
substantial part of its property, and such involuntary case or other proceeding
shall remain undismissed and unstayed for a period of sixty (60) days; or an
order for relief shall be entered against any Credit Party under the federal
bankruptcy Laws as now or hereafter in effect; 
(l)  
(m)            one (1) or more final judgments or orders for the payment of
money aggregating in excess of $250,000 shall be rendered against any Credit
Party and such judgment or order shall continue unsatisfied or unstayed for
thirty (30) days;
(n)  
(o)            any event occurs with respect to any Plan or Plans pursuant to
which any Credit Party and/or any ERISA Affiliate incur a liability due and
owing at the time of such event, without existing funding therefor, for benefit
payments under such Plan or Plans in excess of $250,000; or (ii) any Credit
Party, any ERISA Affiliate, or any other "party-in-interest" or "disqualified
person," as such terms are defined in section 3(14) of ERISA and section
4975(e)(2) of the Code, shall engage in transactions which in the aggregate
would reasonably result in a direct or indirect liability to any Credit Party or
any ERISA Affiliate in excess of $250,000 under section 409 or 502 of ERISA or
section 4975 of the Code; 
(p)            this Agreement or any other Loan Paper shall cease to be in full
force and effect or shall be declared null and void or the validity or
enforceability thereof shall be contested or challenged by any Credit Party, or
any Credit Party shall deny that it has any further liability or obligation
under any of the Loan Papers to which it is a party, or any Lien created by the
Loan Papers shall for any reason (other than the release thereof in accordance
with the Loan Papers) cease to be a valid, first priority, perfected Lien upon
any of the Proved Mineral Interests purported to be covered thereby; 
(q)  
(r)            a Material Adverse Change shall occur with respect to any Credit
Party; or
(s)  
(t)            a Change of Control shall occur;
(u)  
(v)  then, and in every such event, Administrative Agent shall without
presentment,  notice or demand (unless expressly provided for herein) of any
kind (including, without limitation, notice of intention to accelerate and
acceleration), all of which are hereby waived, (i) if requested by Required
Banks, terminate the Commitments and they shall thereupon terminate, and (ii) if
requested by Required Banks, take such other actions as may be permitted by the
Loan Papers including, declaring the Notes (together with accrued interest
thereon) to be, and the Notes shall thereupon become, immediately due and
payable; PROVIDED THAT, in the case of any of the Events of Default specified in
SECTIONS 13.1(g) or (h), without any notice to any Credit Party or any 



other act by Administrative Agent or Banks, the Commitments shall thereupon 
terminate and the Notes (together with accrued interest thereon) shall become 
immediately due and payable.
(w)  
                                       
                                   1ARTICLE
                                    AGENTS

1.1.      SECTION APPOINTMENT, POWERS, AND IMMUNITIES.   Each Bank hereby 
irrevocably appoints and authorizes each Agent to act as its agent under this 
Agreement and the other Loan Papers with such powers and discretion as are 
specifically delegated to each such Agent by the terms of this Agreement and 
the other Loan Papers, together with such other powers as are reasonably 
incidental thereto.  No Agent (which term as used in this sentence and in 
SECTION 14.5 and the first sentence of SECTION 14.6 hereof shall include 
their Affiliates and their own and their Affiliates' officers, directors, 
employees, and agents): (a) shall have any duties or responsibilities except 
those expressly set forth in this Agreement and the other Loan Papers and no 
Agent shall be a trustee or fiduciary for any Bank; (b) shall be responsible 
to Banks for any recital, statement, representation, or warranty (whether 
written or oral) made in or in connection with any Loan Paper or any 
certificate or other document referred to or provided for in, or received by 
any of them under, any Loan Paper, or for the value, validity, effectiveness, 
genuineness, enforceability, or sufficiency of any Loan Paper, or any other 
document referred to or provided for therein or for any failure by any Credit 
Party or any other Person to perform any of its obligations thereunder; (c) 
shall be responsible for or have any duty to ascertain, inquire into, or 
verify the performance or observance of any covenants or agreements by any 
Credit Party or the satisfaction of any condition or to inspect the property 
(including the books and records) of any Credit Party or any of their 
Subsidiaries or Affiliates; (d) shall be required to initiate or conduct any 
litigation or collection proceedings under any Loan Paper; and (e) shall be 
responsible for any action taken or omitted to be taken by it under or in 
connection with any Loan Paper, except for its own gross negligence or 
willful misconduct.  Each Agent may employ agents and attorneys-in-fact and 
shall not be responsible for the negligence or misconduct of any such agents 
or attorneys-in-fact selected by any such Agent with reasonable care.  

1.1.      SECTION RELIANCE BY AGENTS .  Each Agent shall be entitled to rely 
upon any certification, notice, instrument, writing, or other communication 
(including, without limitation, any thereof by telephone or telecopy) 
believed by it to be genuine and correct and to have been signed, sent or 
made by or on behalf of the proper Person or Persons, and upon advice and 
statements of legal counsel (including counsel for any Credit Party), 
independent accountants, and other experts selected by any such Agent.  Each 
Agent may deem and treat the payee of any Note as the holder thereof for all 
purposes hereof unless and until Administrative Agent receives and accepts an 
Assignment and Acceptance Agreement executed in accordance with SECTION 15.10 
hereof.  As to any matters not expressly provided for by this Agreement, no 
Agent shall be required to exercise any discretion or take any action, but 
shall be required to act or to refrain from acting (and shall be fully 
protected in so acting or refraining from acting) upon the  



instructions of Required Banks, and such instructions shall be binding on 
Banks; PROVIDED, HOWEVER, THAT no Agent shall be required to take any action 
that exposes such Agent to personal liability or that is contrary to any Loan 
Paper or applicable Law unless it shall first be indemnified to its 
satisfaction by Banks against any and all liability and expense which may be 
incurred by it by reason of taking any such action.
1.2. 
1.3.      SECTION DEFAULTS .  No Agent shall be deemed to have knowledge or
notice of the occurrence of a Default or Event of Default unless such Agent has
received written notice from a Bank or Borrower specifying such Default or Event
of Default and stating that such notice is a "Notice of Default".  In the event
that Administrative Agent receives such a notice of the occurrence of a Default
or Event of Default, Administrative Agent shall give prompt notice thereof to
Banks.  Administrative Agent shall (subject to SECTION 14.2 hereof) take such
action with respect to such Default or Event of Default as shall reasonably be
directed by Required Banks; PROVIDED THAT, unless and until Administrative Agent
shall have received such directions, Administrative Agent may (but shall not be
obligated to) take such action, or refrain from taking such action, with respect
to such Default or Event of Default as it shall deem advisable in the best
interest of Banks.
1.4. 
1.5.      SECTION RIGHTS AS BANK .  With respect to its Commitment and the Loans
made by it, NationsBank (and any successor acting as Administrative Agent) in
its capacity as a Bank hereunder shall have the same rights and powers hereunder
as any other Bank and may exercise the same as though it were not acting as
Administrative Agent, and the term "Bank" or "Banks" shall, unless the context
otherwise indicates, include Administrative Agent in its individual capacity.
NationsBank (and any successor acting as Administrative Agent), each other Agent
and their Affiliates may (without having to account therefor to any Bank) accept
deposits from, lend money to, make investments in, provide services to, and
generally engage in any kind of lending, trust, or other business with Borrower
or any of its Subsidiaries or Affiliates as if it were not acting as Agent, and
NationsBank (and any successor acting as Administrative Agent), each other Agent
and their Affiliates may accept fees and other consideration from Borrower or
any of its Subsidiaries or Affiliates for services in connection with this
Agreement or otherwise without having to account for the same to Banks.
1.6. 
1.7.      SECTION INDEMNIFICATION .  Banks agree to indemnify each Agent (to the
extent not reimbursed by Borrower or any Subsidiary of Borrower hereof, but
without limiting the obligations of any Credit Party to so reimburse) ratably in
accordance with their respective Commitments, for any and all liabilities,
obligations, losses, damages, penalties, actions, judgments, suits, costs,
expenses (including attorneys' fees), or disbursements of any kind and nature
whatsoever that may be imposed on, incurred by or asserted against any such
Agent (including by any Bank) in any way relating to or arising out of any Loan
Paper or the transactions contemplated thereby or any action taken or omitted by
any Agent under any Loan Paper (INCLUDING ANY OF THE FOREGOING ARISING FROM THE
NEGLIGENCE OF ANY AGENT); PROVIDED THAT no Bank shall be liable for any of the
foregoing to the extent they arise from the gross negligence or willful
misconduct of the Person to be indemnified.



Without limitation of the foregoing, each Bank agrees to reimburse each Agent 
promptly upon demand for its ratable share of any costs or expenses payable 
by Borrower hereunder, to the extent that any such Agent is not promptly 
reimbursed for such costs and expenses by Borrower.  The agreements contained 
in this SECTION 14.5 shall survive payment and performance in full of the 
Obligations and all other amounts payable under this Agreement.
1.8. 
1.9.      SECTION NON-RELIANCE ON AGENTS AND OTHER BANKS .  Each Bank agrees
that it has, independently and without reliance on any Agent or any other Bank,
and based on such documents and information as it has deemed appropriate, made
its own credit analysis of each Credit Party and decision to enter into this
Agreement and that it will, independently and without reliance upon any Agent or
any other Bank, and based on such documents and information as it shall deem
appropriate at the time, continue to make its own analysis and decisions in
taking or not taking action under the Loan Papers.  Except for notices, reports,
and other documents and information expressly required to be furnished to Banks
by Administrative Agent hereunder, no Agent shall have any duty or
responsibility to provide any Bank with any credit or other information
concerning the affairs, financial condition, or business of any Credit Party or
their Affiliates that may come into the possession of any such Agent or any of
their Affiliates.
1.10.     
1.11.          SECTION RESIGNATION OF AGENTS .  Any Agent may resign at any time
by giving notice thereof to Banks and Borrower.  Upon any such resignation,
Required Banks shall have the right to appoint a successor Agent.  If no
successor Agent shall have been so appointed by Required Banks and shall have
accepted such appointment within thirty (30) days after the retiring Agent's
giving of notice of resignation, then the retiring Agent may, on behalf of
Banks, appoint a successor Agent which shall be a commercial bank organized
under the Laws of the United States of America having combined capital and
surplus of at least $100,000,000.  Upon the acceptance of any appointment as
Agent hereunder by a successor, such successor shall thereupon succeed to and
become vested with all the rights, powers, discretion, privileges, and duties of
the retiring Agent, and the retiring Agent shall be discharged from its duties
and obligations hereunder.  After any retiring Agent's  resignation hereunder as
Agent, the provisions of this ARTICLE XIV shall continue in effect for its
benefit in respect of any actions taken or omitted to be taken by it while it
was acting as Agent.
1.12.     



                               ARTICLE 1

                            MISCELLANEOUS


1.1.      SECTION NOTICES.  All notices, requests and other communications to
any party hereunder shall be in writing  (including bank wire, telecopy or
similar writing) and shall be given, if to Administrative Agent or any Bank, at
its address or telecopier number set forth on SCHEDULE 1 hereto, and if given to
Borrower, at its address or telecopy number set forth on the signature pages
hereof (or in either case, at such other address or telecopy number as such
party may hereafter specify for the purpose by notice to the other parties
hereto).  Each such notice, request or other communication shall be effective
(a) if given by telecopy, when such telecopy is transmitted to the telecopy
number specified in this SECTION 15.1 and the appropriate answerback is received
or receipt is otherwise confirmed, (b) if given by mail, three (3) Domestic
Business Days after deposit in the mails with first class postage prepaid,
addressed as aforesaid or (c) if given by any other means, when delivered at the
address specified in this SECTION 15.1; PROVIDED THAT notices to Administrative
Agent under ARTICLE III or IV shall not be effective until received.

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

1.2. 

(a)       SECTION EXPENSES; INDEMNIFICATION.  Borrower agrees to pay on demand
all reasonable costs and expenses of each Agent in connection with the
syndication, preparation, execution, delivery, modification, and amendment of
this Agreement, the other Loan Papers, and the other documents to be delivered
hereunder, including, without limitation, the reasonable fees and expenses of
counsel for Administrative Agent (including the cost of internal counsel) with
respect thereto and with respect to advising Administrative Agent as to its
rights and responsibilities under the Loan Papers.  Borrower further agrees to
pay on demand all reasonable costs and expenses of Administrative Agent and
Banks, if any (including, without limitation, reasonable attorneys' fees and
expenses and the cost of internal counsel), in connection with the enforcement
(whether through negotiations, legal proceedings, or otherwise) of the Loan
Papers and the other documents to be delivered hereunder.

(b)  

(c)       Borrower agrees to indemnify and hold harmless each Agent and each
Bank and each of their Affiliates and their respective officers, directors,
employees, agents, and advisors (each, an "INDEMNIFIED PARTY") from and against
any and all claims, damages, losses, liabilities, costs, and expenses
(including, without limitation, reasonable attorneys' fees) that may be incurred
by or asserted or awarded against any Indemnified Party, in each case arising
out of or in connection with or by reason of (including, without limitation, in
connection with any investigation, 



litigation, or proceeding or preparation of defense in connection therewith) 
the Loan Papers, any of the transactions contemplated herein or the actual or 
proposed use of the proceeds of the Loan (INCLUDING ANY OF THE FOREGOING 
ARISING FROM THE NEGLIGENCE OF THE INDEMNIFIED PARTY), except to the extent 
such claim, damage, loss, liability, cost, or expense is found in a final, 
non-appealable judgment by a court of competent jurisdiction to have resulted 
from such Indemnified Party's gross negligence or willful misconduct.  In the 
case of an investigation, litigation or other proceeding to which the 
indemnity in this SECTION 15.3 applies, such indemnity shall be effective 
whether or not such investigation, litigation or proceeding is brought by 
Borrower, its directors, shareholders or creditors or an Indemnified Party or 
any other Person or any Indemnified Party is otherwise a party thereto and 
whether or not the transactions contemplated hereby are consummated.  
Borrower agrees not to assert any claim against any Agent, any Bank, any of 
their Affiliates, or any of their respective directors, officers, employees, 
attorneys, agents, and advisers, on any theory of liability, for special, 
indirect, consequential, or punitive damages arising out of or otherwise 
relating to the Loan Papers, any of the transactions contemplated herein or 
the actual or proposed use of the proceeds of the Loan.

(d)  

(e)       Without prejudice to the survival of any other agreement of Borrower
hereunder, the agreements and obligations of Borrower contained in this SECTION
15.3 shall survive the payment in full of the Loans and all other amounts
payable under this Agreement.

(f)  

(g)       SECTION RIGHT OF SET-OFF; ADJUSTMENTS.  Upon the occurrence and
during the continuance of any Event of Default, each Bank (and each of its
Affiliates) is hereby authorized at any time and from time to time, to the
fullest extent permitted by Law, to set off and apply any and all deposits
(general or special, time or demand, provisional or final) at any time held and
other indebtedness at any time owing by such Bank (or any of its Affiliates) to
or for the credit or the account of Borrower against any and all of the
Obligations, irrespective of whether such Bank shall have made any demand under
this Agreement or Note held by such and although such obligations may be
unmatured.  Each Bank agrees promptly to notify Borrower after any such set-off
and application made by such Bank; PROVIDED, HOWEVER, THAT the failure to give
such notice shall not affect the validity of such set-off and application.  The
rights of each Bank under this SECTION 15.4 are in addition to other rights and
remedies (including, without limitation, other rights of set-off) that such Bank
may have.

(h)  

(i)       If any Bank (a "BENEFITTED BANK") shall at any time receive any
payment of all or part of the Loans owing to it, or interest thereon, or receive
any collateral in respect thereof (whether voluntarily or involuntarily, by 
set-off, or otherwise), in a greater proportion than any such payment to or 
collateral received by any other Bank, if any, in respect of such other 
Bank's Loans owing to it, or interest thereon, such benefitted Bank shall 
purchase for cash from the other Banks a participating interest in such 
portion of each such other Bank's Loans owing to it, or shall provide such 
other Banks with the benefits of any such collateral, or the proceeds 
thereof, as shall be necessary to cause such benefitted Bank to share the 
excess payment or benefits of such collateral or proceeds ratably with each 
other Bank; PROVIDED, HOWEVER, THAT if all or any portion of such excess 
payment or benefits is thereafter recovered from such benefitted 



Bank, such purchase shall be rescinded, and the purchase price and benefits 
returned, to the extent of such recovery, but without interest.  Borrower 
agrees that any Bank so purchasing a participation from a Bank pursuant to 
this SECTION 15.4 may, to the fullest extent permitted by Law, exercise all 
of its rights of payment (including the right of set-off) with respect to 
such participation as fully as if such Person were the direct creditor of 
Borrower in the amount of such participation.

(j)  

1.3.      SECTION AMENDMENTS AND WAIVERS.  Any provision of this Agreement or
any other Loan Paper may be amended or waived if, but only if, such amendment or
waiver is in writing and is signed by Borrower and Required Banks (and, if
ARTICLE XIV or the rights or duties of any Agent are affected thereby, by such
Agent); PROVIDED THAT no such amendment or waiver shall, unless signed by each
Bank directly affected thereby, (i) increase the Commitments of Banks, (ii)
reduce the principal of or rate of interest on any Loan or any fees or other
amounts payable hereunder, (iii) postpone any date fixed for the payment of any
scheduled installment of principal of or interest on any Loan or any fees or
other amounts payable hereunder or for termination of any Commitment, (iv)
change the percentage of the Commitments or of the unpaid principal amount of
the Notes, or the number of Banks, which shall be required for Banks or any of
them to take any action under this SECTION 15.5 or any other provision of this
Agreement, or (v) release any guarantor of the Obligations or all or
substantially all of the collateral securing the Obligations.

1.4. 

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

1.6. 

1.7.      SECTION LIMITATION ON INTEREST.  Regardless of any provision
contained in the Loan Papers, Banks shall never be entitled to receive, collect,
or apply, as interest on the Loan, any amount in excess of the Maximum Lawful
Rate, and in the event any Bank ever receives, collects or applies as interest
any such excess, such amount which would be deemed excessive interest shall be
deemed a partial prepayment of principal and treated hereunder as such; and if
the Loan is paid in full, any remaining excess shall promptly be paid to
Borrower.  In determining whether or not the interest paid or payable under any
specific contingency exceeds the Maximum Lawful Rate, Borrower and Banks shall,
to the extent permitted under applicable Law, (a) characterize any nonprincipal
payment as an expense, fee or premium rather than as interest, (b) exclude
voluntary prepayments and the effects thereof and (c) amortize, prorate,
allocate and spread, in equal parts, the total amount of the interest throughout
the entire contemplated term of the Notes, so that the interest rate is the
Maximum Lawful Rate throughout the entire term of the Notes; PROVIDED, HOWEVER,
THAT if the unpaid principal balance thereof is 



paid and performed in full prior to the end of the full contemplated term 
thereof, and if the interest received for the actual period of existence 
thereof exceeds the Maximum Lawful Rate, Banks shall refund to Borrower the 
amount of such excess and, in such event, Banks shall not be subject to any 
penalties provided by any Laws for contracting for, charging, taking, 
reserving or receiving interest in excess of the Maximum Lawful Rate.  

1.8. 

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

1.10.     

1.11.     SECTION WAIVER OF CONSUMER CREDIT LAWS.  Pursuant to Chapter 346
of the Texas Finance Code, as amended, Borrower agrees that such Chapter 346
shall not govern or in any manner apply to the Loan.  

1.12.     

(a)       Section ASSIGNMENTS AND PARTICIPATIONS.  Each Bank may assign to
one or more Eligible Assignees all or a portion of its rights and obligations
under this Agreement (including, without limitation, all or a portion of its
interest in the Loan, its Note, and its Commitment); PROVIDED, HOWEVER, THAT,

(b)  

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

(ii) 

(iii)     except in the case of an assignment to another Bank or an 
assignment of all of a Bank's rights and obligations under this Agreement, 
any such partial assignment shall be in an amount at least equal to 
$5,000,000 or an integral multiple of $100,000 in excess thereof;

(iv) 

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

(vi) 

(vii)     the parties to such assignment shall execute and deliver to
Administrative Agent for its acceptance an Assignment and Acceptance Agreement
(herein so called) in the form of EXHIBIT I  hereto, together with any Notes
subject to such assignment and a processing fee to be paid by the assigning Bank
of $3,500.

(viii)    

(ix) Upon execution, delivery, and acceptance of such Assignment and Acceptance
Agreement, the assignee thereunder shall be a party hereto and, to the extent of
such assignment, have the obligations, rights, and benefits of a Bank hereunder
and the assigning Bank shall, to the extent of such assignment, relinquish its
rights and be released from its obligations under this 



Agreement.  Upon the consummation of any assignment pursuant to this SECTION 
15.10(a), the assignor, Administrative Agent and Borrower shall make 
appropriate arrangements so that, if required, new Notes are issued to the 
assignor and the assignee.  If the assignee is not incorporated under the 
Laws of the United States of America or a state thereof, it shall deliver to 
Borrower and Administrative Agent certification as to exemption from 
deduction or withholding of Taxes in accordance with SECTION 5.6.

(x)  

(c)       Administrative Agent shall maintain at its address set forth on
SCHEDULE 1 hereto, a copy of each Assignment and Acceptance Agreement delivered
to and accepted by it and a register for the recordation of the names and
addresses of Banks and the Commitment of, and principal amount of the Loan owing
to, each Bank and the Commitment Percentage of each Bank from time to time (the
"REGISTER").  The entries in the Register shall be conclusive and binding for
all purposes, absent manifest error, and Borrower, Administrative Agent and
Banks may treat each Person whose name is recorded in the Register as a Bank
hereunder for all purposes of this Agreement.  The Register shall be available
for inspection by Borrower or any Bank at any reasonable time and from time to
time upon reasonable prior notice.

(d)  

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

(f)  

(g)       Each Bank may sell participations to one or more Persons in all or a
portion of its rights and obligations under this Agreement (including all or a
portion of its Commitment and its interest in the Loan); PROVIDED, HOWEVER, THAT
(i) such Bank's obligations under this Agreement shall remain unchanged, (ii)
such Bank shall remain solely responsible to the other parties hereto for the
performance of such obligations, (iii) the participant shall be entitled to the
benefit of the yield protection provisions contained in ARTICLE V and the right
of set-off contained in SECTION 15.4, and (iv) Borrower shall continue to deal
solely and directly with such Bank in connection with such Bank's rights and
obligations under this Agreement, and such Bank shall retain the sole right to
enforce the obligations of Borrower relating to its interest in the Loan and its
Note and to approve any amendment, modification, or waiver of any provision of
this Agreement (other than amendments, modifications, or waivers decreasing the
amount of principal of or the rate at which interest is payable on the Loan or
the Notes, extending any scheduled principal payment date or date fixed for the
payment of interest on the Loan or the Notes, or extending its Commitment).

(h)  

(i)       Notwithstanding any other provision set forth in this Agreement, any
Bank may at any time assign and pledge all or any portion of its interest in the
Loan and its Note to any Federal Reserve Bank as collateral security pursuant to
Regulation A and any Operating Circular issued 



by such Federal Reserve Bank.  No such assignment shall release the assigning
Bank from its obligations hereunder.

(j)  

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

(a)       Borrower shall not assign or transfer any rights or obligations under
any Loan Paper or permit any Credit Party to assign or transfer any rights or
obligations under any Loan Paper without first obtaining all Banks' consent, and
any purported assignment or transfer without all Banks' consent is void.

(b)  

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

1.3. 

(a)       SECTION CONSENT TO JURISDICTION; WAIVER OF IMMUNITIES.  Borrower
hereby irrevocably submits to the jurisdiction of any Texas State or Federal
court sitting in the Northern District of Texas over any action or proceeding
arising out of or relating to this Agreement or any other Loan Papers, and
Borrower hereby irrevocably agrees that all claims in respect of such action or
proceeding may be heard and determined in such Texas State or Federal court.  As
an alternative, Borrower irrevocably consents to the service of any and all
process in any such action or proceeding by the mailing of copies of such
process to such Person at its address specified in SECTION 15.1.  Borrower
agrees that a final judgment on any such action or proceeding shall be
conclusive and may be enforced in other jurisdictions by suit on the judgment or
in any other manner provided by Law.

(b)  

(c)       Nothing in this SECTION 15.12 shall affect any right of Banks to
serve legal process in any other manner permitted by Law or affect the right of
any Bank to bring any action or proceeding against any Credit Party or their
properties in the courts of any other jurisdictions.

(d)  



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

1.1.      SECTION COUNTERPARTS; EFFECTIVENESS.  This Agreement may be signed in
any number of counterparts, each of which shall be an original, with the same
effect as if the signatures thereto and hereto were upon the same instrument.
Subject to the terms and conditions herein set forth, this Agreement shall
become effective when Administrative Agent shall have received counterparts
hereof signed by all of the parties hereto or, in the case of any Bank as to
which an executed counterpart shall not have been received, Administrative Agent
shall have received telegraphic or other written confirmation from such Bank of
execution of a counterpart hereof by such Bank.  

1.2.      SECTION NO THIRD PARTY BENEFICIARIES.  Except for the provisions
hereof inuring to the benefit of Agents not a party to this Agreement, it is
expressly intended that there shall be no third party beneficiaries of the
covenants, agreements, representations or warranties herein contained other than
third party beneficiaries permitted pursuant to SECTION 15.10.

1.3. 

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

1.5. 

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

1.7. 

1.8.      SECTION CONFIDENTIALITY.  Administrative Agent and each Bank (each, a
"LENDING PARTY") agrees to keep confidential any information furnished or made
available to it by Borrower pursuant to this Agreement that is marked
confidential; PROVIDED THAT nothing herein shall prevent any Lending Party from
disclosing such information (a) to any other Lending Party or any Affiliate of
any Lending Party, or any officer, director, employee, agent, or advisor of any
Lending Party or Affiliate of any Lending Party, (b) to any other Person if
reasonably incidental to the administration of the credit facility provided
herein, (c) as required by any Law, rule, or regulation, (d) upon the order of
any court or administrative agency, (e) upon the request or demand of any
regulatory agency or authority, (f) that is or becomes available to the public
or that is or becomes available to any Lending Party other than as a result of a
disclosure by any Lending Party prohibited by this Agreement, (g) in connection
with any litigation to which such 



Lending Party or any of its Affiliates may be a party, (h) to the extent 
necessary in connection with the exercise of any remedy under this Agreement 
or any other Loan Paper, and (i) subject to provisions substantially similar 
to those contained in this SECTION 15.17, to any actual or proposed 
participant or assignee. 

1.9. 
                              [Signature pages follow]



     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective Authorized Officers on the day and year first
above written.  


BORROWER:
- - ---------

QUICKSILVER RESOURCES INC.,
a Delaware corporation



By:
   ----------------------------------
     Glenn Darden,
     Vice President

Address for Notice:

1619 Pennsylvania Avenue
Fort Worth, Texas 76104
Attn: Glenn Darden
Fax No. (817) 877-3829



BANKS:
- - ------

NATIONSBANK, N.A.


By:
   ----------------------------------
     J. Scott Fowler, Vice President


BANK ONE, TEXAS, N.A.


By:
   ----------------------------------
     Wm. Mark Cranmer,
     Vice President



PARIBAS

By:
   ----------------------------------
Name:
     --------------------------------
Title:
      -------------------------------


FROST NATIONAL BANK


By:
   ----------------------------------
Name:
     --------------------------------
Title:
      -------------------------------


ADMINISTRATIVE AGENT:
- - ---------------------

NATIONSBANK, N.A.


By:
   ----------------------------------
     J. Scott Fowler, Vice President



                                     EXHIBIT A

                                  PLEDGE AGREEMENT


THIS PLEDGE AGREEMENT (this "AGREEMENT") is made as of __________, _____ by
[QUICKSILVER RESOURCES INC., A DELAWARE CORPORATION] [FIRST TIER SUBSIDIARY]
(herein called "PLEDGOR"), in favor of NationsBank, N.A., as Administrative
Agent for the ratable benefit of Banks (as defined below) (herein called
"PLEDGEE").


                                W I T N E S S E T H:

     WHEREAS, [PLEDGOR] [QUICKSILVER RESOURCES INC., A DELAWARE CORPORATION
("BORROWER")], Pledgee and Banks are parties to a Second Amended and Restated
Credit Agreement dated as of March 1, 1999, pursuant to which Banks have made a
revolving credit loan to [PLEDGOR] [BORROWER] and agreed to issue and
participate in letters of credit issued on behalf of [PLEDGOR] [BORROWER] (as
amended or modified from time to time, the "CREDIT AGREEMENT"); and

     WHEREAS, it is a condition to the agreement of Banks to continue to extend
credit under the Credit Agreement that Pledgor execute and deliver this
Agreement in favor of Pledgee for the benefit of Banks.

     NOW, THEREFORE, in consideration of the premises and in order to induce
Banks to continue to extend credit under the Credit Agreement, Pledgor hereby
agrees with Pledgee as follows:

                                     ARTICLE I

                             DEFINITIONS AND REFERENCES

     Section 1.1.  GENERAL DEFINITIONS.  As used herein, the terms "AGREEMENT,"
"CREDIT AGREEMENT," ["BORROWER,"] "PLEDGEE," and "PLEDGOR," shall have the
meanings indicated above, and the following terms shall have the following
meanings:

     "BANK" means any financial institution reflected on Schedule 1 to the
Credit Agreement and its successors and assigns, and "BANKS" shall mean all
Banks.
 
     "CODE" means the Uniform Commercial Code in effect in the State of Texas on
the date hereof.



     "COLLATERAL" means all property of whatever type, in which Pledgee at any
time has a security interest pursuant to SECTION 2.1.

     "COMMITMENT" means the agreement or commitment by Banks to make loans or
otherwise extend credit to [PLEDGOR] [BORROWER] under the Credit Agreement, and
any other agreement, commitment, statement of terms or other document
contemplating the making of loans or advances or other extension of credit by
Banks to or for the account of [PLEDGOR] [BORROWER] which is now or at any time
hereafter intended to be secured by the Collateral under this Agreement.

     "OBLIGATION DOCUMENTS" means the Credit Agreement, the Notes, the other
Loan Papers, and all other documents and instruments under, by reason of which,
or pursuant to which, any or all of the Obligations are evidenced, governed,
secured, or otherwise dealt with, and all other agreements, certificates, and
other documents, instruments and writings heretofore or hereafter delivered in
connection herewith or therewith.

     "OBLIGATIONS" means all present and future indebtedness, obligations and
liabilities of whatever type which are or shall be secured pursuant to SECTION
2.2.

     "OTHER LIABLE PARTY" means any Person, other than [PLEDGOR] [BORROWER], who
may now or may at any time hereafter be primarily or secondarily liable for any
of the Obligations or who may now or may at any time hereafter have granted to
Pledgee or Banks a Lien upon any property as security for the Obligations.

     "PLEDGED EQUITY" has the meaning given it in SECTION 2.1.

     Section 1.2.   OTHER DEFINITIONS.  Reference is hereby made to the Credit
Agreement for a statement of the terms thereof. All capitalized terms used in
this Agreement which are defined in the Credit Agreement and not otherwise
defined herein shall have the same meanings herein as set forth therein.  All
terms used in this Agreement which are defined in the Code and not otherwise
defined herein or in the Credit Agreement shall have the same meanings herein as
set forth therein, except where the context otherwise requires.

     Section 1.3.   EXHIBITS.  All exhibits attached to this Agreement are a
part hereof for all purposes.

     Section 1.4.   AMENDMENT OF DEFINED INSTRUMENTS.  Unless the context
otherwise requires or unless otherwise provided herein, references in this
Agreement to a particular agreement, instrument or document also refer to and
include all renewals, extensions, amendments, modifications, supplements or
restatements of any such agreement, instrument or document; PROVIDED THAT
nothing contained in this SECTION 1.4 shall be construed to authorize any Person
to execute or enter into any such renewal, extension, amendment, modification,
supplement or restatement.


                                       2


     Section 1.5.   REFERENCES AND TITLES.  All references in this Agreement to
Exhibits, Articles, Sections, subsections, and other subdivisions refer to the
Exhibits, Articles, Sections, subsections and other subdivisions of this
Agreement unless expressly provided otherwise.  Titles appearing at the
beginning of any subdivision are for convenience only and do not constitute any
part of any such subdivision and shall be disregarded in construing the language
contained in this Agreement.  The words "this Agreement," "herein," "hereof,"
"hereby," "hereunder" and words of similar import refer to this Agreement as a
whole and not to any particular subdivision unless expressly so limited. The
phrases "this Section" and "this subsection" and similar phrases refer only to
the Sections or subsections hereof in which the phrase occurs.  The word "or" is
not exclusive, and the word "including" (in all of its forms) means "including
without limitation".  Pronouns in masculine, feminine and neuter gender shall be
construed to include any other gender, and words in the singular form shall be
construed to include the plural and vice versa unless the context otherwise
requires.

                                     ARTICLE II

                                 SECURITY INTEREST

     Section 2.1.   GRANT OF SECURITY INTEREST.  As collateral security for all
of the Obligations, Pledgor hereby pledges and assigns to Pledgee and grants to
Pledgee a continuing first priority security interest for the benefit of Banks
in and to all of the following rights, interests and property:

     (a)  all of the issued and outstanding shares of capital stock, membership
interests or partnership interests of each Subsidiary of Pledgor now owned or
hereafter acquired by Pledgor including, without limitation, the shares,
membership interests or partnership interests of each Subsidiary of Pledgor
owned by Pledgor on the date hereof (all of the foregoing being herein sometimes
called the "PLEDGED EQUITY");

     (b)  any and all proceeds or other sums arising from or by virtue of, and
all dividends and distributions (cash or otherwise) payable and/or distributable
with respect to, all or any of the Pledged Equity described in clause (a)
preceding; and

     (c)  all cash, securities, dividends and other property at any time and
from time to time receivable or otherwise distributed in respect of or in
exchange for any or all of the Pledged Equity described in clause (a) hereof and
any other property substituted or exchanged therefor.

     Section 2.2.   OBLIGATIONS SECURED.  The security interest created hereby
in the Collateral constitutes continuing collateral security for all of the
following obligations, indebtedness and liabilities, whether now existing or
hereafter incurred:


                                       3


     (a)  CREDIT AGREEMENT INDEBTEDNESS.  The payment by [PLEDGOR] [BORROWER],
as and when due and payable, of all amounts from time to time owing by [PLEDGOR]
[BORROWER] under or in respect of the Credit Agreement, the Notes or any of the
other Obligation Documents.

     (b)  RENEWALS.  All renewals, extensions, amendments, modifications,
supplements, or restatements of, or substitutions for, any of the foregoing.

     (c)  PERFORMANCE.  The due performance and observance by [PLEDGOR]
[BORROWER] of all of its other obligations from time to time existing under or
in respect of any of the Obligation Documents.

     (d)  HEDGE TRANSACTIONS.  The payment and performance of any and all
present or future obligations of [PLEDGOR] [BORROWER] according to the terms of
any present or future Hedge Transaction, including, without limitation, any
present or future swap agreements, cap, floor, collar, exchange, transaction,
forward agreement or other exchange or protection agreements relating to crude
oil, natural gas or other Hydrocarbons, or any option with respect to any such
transaction now existing or hereafter entered into between and/or among
[PLEDGOR,] [BORROWER,] Pledgee, any Bank or any affiliate of any of the
foregoing.

                                    ARTICLE III

                      REPRESENTATIONS WARRANTIES AND COVENANTS

     Section 3.1.   REPRESENTATIONS AND WARRANTIES.  Pledgor represents and
warrants as follows:

     (a)  OWNERSHIP AND LIENS.  Pledgor has good and marketable title to the
Collateral free and clear of all Liens, encumbrances or adverse claims, except
for the security interest created by this Agreement.  No effective financing
statement or other instrument similar in effect covering all or any part of the
Collateral is on file in any recording office except such as have been filed in
favor of Pledgee relating to this Agreement.

     (b)  NO CONFLICTS OR CONSENTS.  Neither the ownership or the intended use
of the Collateral by Pledgor, nor the grant of the security interest by Pledgor
to Pledgee herein, nor the exercise by Pledgee of its rights or remedies
hereunder, will (i) conflict with any provision of (a) any domestic or foreign
law, statute, rule or regulation, (b) the articles or certificate of
incorporation, certificate of limited partnership, partnership agreement,
regulations, charter or bylaws of Pledgor, or (c) any agreement, judgment,
license, order or permit applicable to or binding upon Pledgor, or (ii) result
in or require the creation of any Lien, charge or encumbrance upon any assets or
properties of Pledgor except as expressly contemplated in the Obligation
Documents.  Except as expressly contemplated in the Obligation Documents, no
consent, approval, authorization or order of, and no notice to or filing with,
any court, Governmental 


                                       4


Authority or third party is required in connection with the grant by Pledgor 
of the security interest herein, or the exercise by Pledgee of its rights and 
remedies hereunder.

     (c)  SECURITY INTEREST.  Pledgor has and will have at all times full right,
power and authority to grant a security interest in the Collateral to Pledgee in
the manner provided herein, free and clear of any Lien, adverse claim, or
encumbrance.  This Agreement creates a valid and binding security interest in
favor of Pledgee in the Collateral securing the Obligations.  The taking
possession by Pledgee (for the ratable benefit of Banks) of all certificates,
instruments and cash constituting Collateral from time to time and the filing of
the financing statements delivered concurrently herewith by Pledgor to Pledgee
will perfect, and establish the first priority of, Pledgee's security interest
hereunder in the Collateral securing the Obligations. No further or subsequent
filing, recording, registration, other public notice or other action is
necessary or desirable to perfect or otherwise continue, preserve or protect
such security interest except for continuation statements or filings as
contemplated in SECTION 3.3(b).

     (d)  PLEDGED EQUITY.  (i) Pledgor is the legal and beneficial owner of the
Pledged Equity issued by each Subsidiary of Pledgor, (ii) the Pledged Equity is
duly authorized and issued, fully paid and non-assessable, and all documentary,
stamp or other Taxes or fees owing in connection with the issuance, transfer
and/or pledge thereof hereunder have been paid, (iii) no dispute, right of
setoff, counterclaim or defense exists with respect to all or any part of the
Pledged Equity, (iv) the Pledged Equity is free and clear of all Liens, options,
warrants, puts, calls or other rights of third Persons, and restrictions, other
than (a) those Liens arising under this Agreement or any other of the Loan
Papers and Liens for Taxes not yet due and payable, and (b) restrictions on
transferability imposed by applicable state and federal securities Laws, (v)
Pledgor has full right and authority to pledge the Pledged Equity for the
purposes and upon the terms set out herein, (vi) certificates (or other evidence
acceptable to Pledgee) representing the Pledged Equity have been delivered to
Pledgee, together with a duly executed blank stock power (as applicable) with
signatures guaranteed, for each certificate, (vii) the Pledged Equity
constitutes all of the issued and outstanding capital stock, membership
interests or partnership interests of each Subsidiary of Pledgor of every class,
and (viii) no Subsidiary of Pledgor has issued, and there are not outstanding,
any options, warrants or other rights to acquire capital stock, membership
interests or partnership interests of any Subsidiary of Pledgor.

     Section 3.2.   AFFIRMATIVE COVENANTS.  Unless Pledgee shall otherwise
consent in writing, Pledgor will at all times comply with the covenants
contained in this SECTION 3.2 from the date hereof and so long as any part of
the Obligations or Commitments is outstanding.

     (a)  OWNERSHIP AND LIENS.  Pledgor will maintain good and marketable title
to all Collateral free and clear of all Liens encumbrances or adverse claims,
except for the security interest created by this Agreement and the security
interests and other encumbrances expressly permitted by the Credit Agreement.
Pledgor will cause to be terminated any financing statement or other
registration with respect to the Collateral, except such as may exist or as may
have been 


                                       5


filed in favor of Pledgee.  Pledgor will defend Pledgee's right, title and 
special property and security interest in and to the Collateral against the 
claims of any Person.

     (b)  FURTHER ASSURANCES.  Pledgor will, at its expense and at any time and
from time to time, promptly execute and deliver all further instruments and
documents and take all further action that may be necessary or desirable or that
Pledgee may request in order (i) to perfect and protect the security interest
created or purported to be created hereby and the first priority of such
security interest; (ii) to enable Pledgee to exercise and enforce its rights and
remedies hereunder in respect of the Collateral; or (iii) to otherwise effect
the purposes of this Agreement, including, without limitation: (A) executing and
filing such financing or continuation statements, or amendments thereto, as may
be necessary or desirable or that Pledgee may request in order to perfect and
preserve the security interest created or purported to be created hereby; and
(B) furnishing to Pledgee from time to time statements and schedules further
identifying and describing the Collateral and such other reports in connection
with the Collateral as Pledgee may reasonably request, all in reasonable detail.

     (c)  DELIVERY OF PLEDGED EQUITY.  All certificates, instruments and
writings evidencing the Pledged Equity shall be delivered to Pledgee on or prior
to the execution and delivery of this Agreement.  All other certificates,
instruments and writings hereafter evidencing or constituting Pledged Equity
shall be delivered to Pledgee promptly upon the receipt thereof by or on behalf
of Pledgor.  All such Pledged Equity shall be held by or on behalf of Pledgee
pursuant hereto and shall be delivered in the same manner and with the same
effect as described in SECTION 2.1 and SECTION 3.1 hereof.  Upon delivery, such
equity interests shall thereupon constitute "Pledged Equity" and shall be
subject to the Liens herein created, for the purposes and upon the terms and
conditions set forth in this Agreement and the other Loan Papers.

     (d)  PROCEEDS OF PLEDGED EQUITY.  If Pledgor shall receive, by virtue of
its being or having been an owner of any Pledged Equity, any (i) shares of
capital stock, membership interests and/or partnership interests (including any
certificate representing any shares of capital stock, membership interests
and/or partnership interests or distribution in connection with any increase or
reduction of capital, reorganization, reclassification, merger, consolidation,
sale of assets, or spinoff or split-off), promissory note or other instrument or
writing; (ii) option or right, whether as an addition to, substitution for, or
in exchange for, any Pledged Equity or otherwise; (iii) dividends payable in
cash (except such dividends permitted to be retained by Pledgor pursuant to
SECTION 4.7 hereof) or in securities or other property; or (iv) dividends or
other distributions in connection with a partial or total liquidation or
dissolution or in connection with a reduction of capital, capital surplus or
paid-in surplus, Pledgor shall receive the same in trust for the benefit of
Pledgee, shall segregate it from Pledgor's other property, and shall promptly
deliver it to Pledgee in the exact form received, with any necessary endorsement
or appropriate stock powers duly executed in blank, to be held by Pledgee as
Collateral.

     (e)  STATUS OF PLEDGED EQUITY.  The certificates (or other instruments and
writings) evidencing the Pledged Equity shall at all times be valid and genuine
and shall not be altered.  


                                       6


The Pledged Equity at all times shall be duly authorized, validly issued, 
fully paid, and non-assessable, shall not be issued in violation of the 
pre-emptive rights of any Person or of any agreement by which Pledgor or any 
of its Subsidiaries is bound, and, except for the bylaws, partnership 
agreement or regulations of Pledgor, shall not be subject to any restrictions 
or conditions with respect to the transfer, voting or capital of any Pledged 
Equity.

     Section 3.3.   NEGATIVE COVENANTS.  Unless Pledgee shall otherwise consent
in writing, Pledgor will at all times comply with the covenants contained in
this SECTION 3.3 from the date hereof and so long as any part of the Obligations
or the Commitments is outstanding.

     (a)  TRANSFER OR ENCUMBRANCE.  Pledgor will not sell, assign (by operation
of law or otherwise), transfer, exchange, lease or otherwise dispose of any of
the Collateral, nor will Pledgor grant a Lien upon or execute, file or record
any financing statement or other registration with respect to the Collateral,
nor will Pledgor allow any such Lien, financing statement, or other registration
to exist or deliver actual or constructive possession of the Collateral to any
other Person other than Liens in favor of Pledgee.

     (b)  FINANCING STATEMENT FILINGS.  Pledgor recognizes that financing
statements pertaining to the Collateral have been or may be filed where Pledgor
maintains any Collateral, has its records concerning any Collateral or has its
chief executive office or chief place of business.  Without limitation of any
other covenant herein, Pledgor will not cause or permit any change to be made in
its name, identity or corporate, partnership or limited liability company
structure, or any change to be made to a jurisdiction other than as represented
in SECTION 3.1 hereof in (i) the location of any records concerning any
Collateral, or (ii) in the location of its chief executive office or chief place
of business, unless Pledgor shall have notified Pledgee of such change at least
thirty (30) days prior to the effective date of such change, and shall have
first taken all action required by Pledgee for the purpose of further perfecting
or protecting the security interest in favor of Pledgee in the Collateral.  In
any notice furnished pursuant to this subsection, Pledgor will expressly state
that the notice is required by this Agreement and contains facts that may
require additional filings of financing statements or other notices for the
purposes of continuing perfection of Pledgee's security interest in the
Collateral.

     (c)  IMPAIRMENT OF SECURITY INTEREST.  Pledgor will not take or fail to
take any action which would in any manner impair the enforceability of Pledgee's
security interest in any Collateral.

     (d)  DILUTION OF PLEDGED EQUITY.  Pledgor will not permit the issuance of
(i) any additional shares of capital stock, membership interests or partnership
interests of any class of any of its Subsidiaries (unless immediately upon
issuance the same are pledged and delivered to Pledgee pursuant to the terms
hereof), (ii) any securities convertible voluntarily by the holder thereof or
automatically upon the occurrence or non-occurrence of any event or condition
into, or exchangeable for, any such capital stock, membership interests or
partnership interests, or (iii) any warrants, options, contracts or other
commitments entitling any Person to purchase or 


                                       7


otherwise acquire any such capital stock, membership interests or partnership 
interests of any Subsidiary of Pledgor.

     (e)  RESTRICTIONS ON PLEDGED EQUITY.  Except for the bylaws, partnership
agreement or regulations of each Subsidiary of Pledgor, Pledgor will not enter
into any agreement creating, or otherwise permit to exist, any restriction or
condition upon the transfer, voting or control of any Pledged Equity.

                                    ARTICLE IV.

                        REMEDIES, POWERS AND AUTHORIZATIONS 

     Section 4.1.   PROVISIONS CONCERNING THE COLLATERAL.

     (a)  ADDITIONAL FINANCING STATEMENT FILINGS.  Pledgor hereby authorizes
Pledgee to file, without the signature of Pledgor where permitted by law, one
(1) or more financing or continuation statements, and amendments thereto,
relating to the Collateral. Pledgor further agrees that a carbon, photographic
or other reproduction of this Agreement or any financing statement describing
any Collateral is sufficient as a financing statement and may be filed in any
jurisdiction Pledgee may deem appropriate.

     (b)  POWER OF ATTORNEY.  Pledgor hereby irrevocably appoints Pledgee as
Pledgor's attorney-in-fact and proxy, with full authority in the place and stead
of Pledgor and in the name of Pledgor or otherwise, from time to time in
Pledgee's discretion, to take any action (except for the exercise of any voting
rights pertaining to the Pledged Equity or any part thereof) and to execute any
instrument, certificate or notice which Pledgee may deem necessary or advisable
to accomplish the purposes of this Agreement including, without limitation: (i)
to request or instruct Pledgor (and each registrar, transfer agent, or similar
Person acting on behalf of Pledgor) to register the pledge or transfer of the
Collateral to Pledgee; (ii) to otherwise give notification to Pledgor,
registrar, transfer agent, financial intermediary, or other Person of Pledgee's
security interests hereunder; (iii) to ask, demand, collect, sue for, recover,
compound, receive and give acquittance and receipts for moneys due and to become
due under or in respect of any of the Collateral; (iv) to receive, indorse and
collect any drafts or other instruments, documents and chattel paper; and (v) to
file any claims or take any action or institute any proceedings which Pledgee
may deem necessary or desirable for the collection of any of the Collateral or
otherwise to enforce the rights of Pledgee with respect to any of the
Collateral.

     (c)  PERFORMANCE BY PLEDGEE.  If Pledgor fails to perform any agreement or
obligation contained herein, Pledgee may itself perform, or cause performance
of, such agreement or obligation, and the expenses of Pledgee incurred in
connection therewith shall be payable by Pledgor [(BUT NOT BORROWER)] under
SECTION 4.4.


                                       8


     (d)  COLLECTION RIGHTS.  Pledgee shall have the right at any time, upon the
occurrence and during the continuance of a Default or an Event of Default, to
notify any or all obligors (including without limitation Pledgor) under any
accounts or general intangibles included among the Collateral of the assignment
thereof to Pledgee and to direct such obligors to make payment of all amounts
due or to become due to Pledgor thereunder directly to Pledgee and, upon such
notification and at the expense of Pledgor [(BUT NOT BORROWER)] and to the
extent permitted by law, to enforce collection thereof and to adjust, settle or
compromise the amount or payment thereof, in the same manner and to the same
extent as Pledgor could have done.  After Pledgor receives notice that Pledgee
has given any notice referred to above in this subsection, (i) all amounts and
proceeds (including instruments and writings) received by Pledgor in respect of
such accounts or general intangibles shall be received in trust for the benefit
of Pledgee hereunder, shall be segregated from other funds of Pledgor and shall
be forthwith paid over to Pledgee in the same form as so received (with any
necessary indorsement) to be held as cash collateral and (A) released to Pledgor
upon the remedy of all Defaults or Events of Default, or (B) if any Event of
Default shall have occurred and be continuing, applied as specified in SECTION
4.3, and (ii) Pledgor will not adjust, settle or compromise the amount or
payment of any such account or general intangible or release wholly or partly
any account debtor or obligor thereof (including without limitation Pledgor) or
allow any credit or discount thereon.

     Section 4.2.   EVENT OF DEFAULT REMEDIES.  If an Event of Default shall
have occurred and be continuing, Pledgee may from time to time in its
discretion, without limitation and without notice except as expressly provided
below:

     (a)  exercise in respect of the Collateral, in addition to other rights and
remedies provided for herein, under the other Obligation Documents or otherwise
available to it, all the rights and remedies of a secured party on default under
the Code (whether or not the Code applies to the affected Collateral);

     (b)  require Pledgor to, and Pledgor hereby agrees that it will at its
expense and upon request of Pledgee forthwith, assemble all or part of the
Collateral as directed by Pledgee and make it available to Pledgee at a place to
be designated by Pledgee which is reasonably convenient to both parties;

     (c)  reduce its claim to judgment against Pledgor or foreclose or otherwise
enforce, in whole or in part, the security interest created hereby by any
available judicial procedure;

     (d)  dispose of, at its office, on the premises of Pledgor or elsewhere,
all or any part of the Collateral, as a unit or in parcels, by public or private
proceedings, and by way of one or more contracts (it being agreed that the sale
of any part of the Collateral shall not exhaust Pledgee's power of sale, but
sales may be made from time to time, and at any time, until all of the
Collateral has been sold or until the Obligations have been paid and performed
in full), and at any such sale it shall not be necessary to exhibit any of the
Collateral;


                                       9


     (e)  buy (or allow any Bank to buy) the Collateral, or any part thereof, at
any public sale;

     (f)  buy (or allow any Bank to buy) the Collateral, or any part thereof, at
any private sale if the Collateral is of a type customarily sold in a recognized
market or is of a type which is the subject of widely distributed standard price
quotations;

     (g)  apply by appropriate judicial proceedings for appointment of a
receiver for the Collateral, or any part thereof, and Pledgor hereby consents to
any such appointment; and

     (h)  at its discretion, retain the Collateral in satisfaction of the
Obligations whenever the circumstances are such that Pledgee is entitled to do
so under the Code or otherwise (PROVIDED THAT Pledgee shall in no circumstances
be deemed to have retained the Collateral in satisfaction of the Obligations in
the absence of an express notice by Pledgee to Pledgor that Pledgee has either
done so or intends to do so).

Pledgor agrees that, to the extent notice of sale shall be required by law, at
least five (5) days' notice to Pledgor of the time and place of any public sale
or the time after which any private sale is to be made shall constitute
reasonable notification.  Pledgee shall not be obligated to make any sale of
Collateral regardless of notice of sale having been given.  Pledgee may adjourn
any public or private sale from time to time by announcement at the time and
place fixed therefor, and such sale may, without further notice, be made at the
time and place to which it was so adjourned.

     Section 4.3.   APPLICATION OF PROCEEDS.  If any Event of Default shall have
occurred and be continuing, Pledgee may in its discretion apply any cash held by
Pledgee as Collateral, and any cash proceeds received by Pledgee in respect of
any sale of, collection from, or other realization upon all or any part of the
Collateral, to any or all of the following in such order as Pledgee may elect:

     (a)  to the repayment of the reasonable costs and expenses, including
reasonable attorneys' fees and legal expenses, incurred by Pledgee in connection
with (i) the administration of this Agreement, (ii) the custody, preservation,
use or operation of, or the sale of, collection from, or other realization upon,
any Collateral, (iii) the exercise or enforcement of any of the rights of
Pledgee hereunder, or (iv) the failure of Pledgor to perform or observe any of
the provisions hereof;

     (b)  to the payment or other satisfaction of any Liens, encumbrances, or
adverse claims upon or against any of the Collateral;

     (c)  to the reimbursement of Pledgee for the amount of any obligations of
Pledgor or any Other Liable Party paid or discharged by Pledgee pursuant to the
provisions of this 


                                      10


Agreement or the other Obligation Documents, and of any expenses of Pledgee 
payable by Pledgor hereunder or under the other Obligation Documents;

     (d)  to the satisfaction of any other Obligations or any other indebtedness
of [PLEDGOR] [AND/OR BORROWER] to Banks or Pledgee;

     (e)  by holding the same as Collateral;

     (f)  to the payment of any other amounts required by applicable law
(including, without limitation, Section 9.504(a)(3) of the Code or any successor
or similar, applicable statutory provision); and

     (g)  by delivery to Pledgor or to whomsoever shall be lawfully entitled to
receive the same or as a court of competent jurisdiction shall direct.

     Section 4.4.   RELEASE AND EXPENSES.  In addition to, and not in
qualification of, any similar obligations under other Obligation Documents:

     (a)  Pledgor agrees to release and forever discharge Pledgee and each Bank
from and against any and all claims, losses and liabilities growing out of or
resulting from this Agreement (including, without limitation, enforcement of
this Agreement).  The foregoing release and discharge shall apply whether or not
such claims, losses and liabilities are in any way or to any extent owed, in
whole or in part, under any claim or theory of strict liability or are, to any
extent caused, in whole or in part, by any negligent act or omission of any kind
by Pledgee or any Bank.

     (b)  Pledgor will upon demand pay to Pledgee the amount of any and all
costs and expenses, including the fees and disbursements of Pledgee's counsel
and of any experts and agents, which Pledgee may incur in connection with (i)
the transactions which give rise to this Agreement; (ii) the preparation of this
Agreement and the perfection and preservation of the security interest created
under this Agreement; (iii) the administration of this Agreement; (iv) the
custody, preservation, use or operation of, or the sale of, collection from, or
other realization upon, any Collateral; (v) the exercise or enforcement of any
of the rights of Pledgee hereunder; or (vi) the failure by Pledgor to perform or
observe any of the provisions hereof, except expenses resulting from Pledgee's
gross negligence or willful misconduct.

     Section 4.5.   NON-JUDICIAL REMEDIES.  In granting to Pledgee the power to
enforce its rights hereunder without prior judicial process or judicial hearing,
Pledgor expressly waives, renounces and knowingly relinquishes any legal right
which might otherwise require Pledgee to enforce its rights by judicial process.
In so providing for non-judicial remedies, Pledgor recognizes and concedes that
such remedies are consistent with the usage of trade, are responsive to
commercial necessity, and are the result of a bargain at arm's length.  Nothing
herein is intended to prevent Pledgee or Pledgor from resorting to judicial
process at either party's option.


                                      11


     Section 4.6.   OTHER RECOURSE.  Pledgor waives any right to require Pledgee
or Banks to proceed against any other Person, exhaust any Collateral or other
security for the Obligations, or to have any Other Liable Party joined with
Pledgor in any suit arising out of the Obligations or this Agreement, or pursue
any other remedy in Pledgee's power.  Pledgor further waives any and all notice
of acceptance of this Agreement and of the creation, modification,
rearrangement, renewal or extension for any period of any of the Obligations of
any Other Liable Party from time to time.  Pledgor further waives any defense
arising by reason of any disability or other defense of any Other Liable Party
or by reason of the cessation from any cause whatsoever of the liability of any
Other Liable Party.  Until all of the Obligations shall have been paid in full,
Pledgor shall have no right to subrogation and Pledgor waives the right to
enforce any remedy which Pledgee or any Bank has or may hereafter have against
any Other Liable Party, and waives any benefit of and any right to participate
in any other security whatsoever now or hereafter held by Pledgee.  Pledgor
authorizes Pledgee and each Bank, without notice or demand and without any
reservation of rights against Pledgor and without affecting [PLEDGOR'S] [OR
BORROWER'S] liability hereunder or on the Obligations, from time to time to (a)
take or hold any other property of any type from any other Person as security
for the Obligations, and exchange, enforce, waive and release any or all of such
other property, (b) apply the Collateral or such other property and direct the
order or manner of sale thereof as Pledgee may in its discretion determine, (c)
renew, extend for any period, accelerate, modify, compromise, settle or release
any of the obligations of any Other Liable Party in respect to any or all of the
Obligations or other security for the Obligations, (d) waive, enforce, modify,
amend or supplement any of the provisions of any Obligation Document with any
Person other than Pledgor, and (e) release or substitute any Other Liable Party.

     Section 4.7.   VOTING RIGHTS, DIVIDENDS ETC. IN RESPECT OF PLEDGED EQUITY.

     (a)  So long as no Default or Event of Default shall have occurred and be
continuing Pledgor may receive and retain any and all dividends or interest paid
in respect of the Pledged Equity; PROVIDED, HOWEVER, THAT any and all

          (i)       dividends and interest paid or payable other than in cash in
     respect of, and instruments and other property received, receivable or
     otherwise distributed in respect of or in exchange for, any Pledged Equity,
 
          (ii)      dividends and other distributions paid or payable in cash in
     respect of any Pledged Equity in connection with a partial or total
     liquidation or dissolution or in connection with a reduction of capital,
     capital surplus or paid-in surplus, and

          (iii)     cash paid, payable or otherwise distributed in redemption
     of, or in exchange for, any Pledged Equity,

shall be, and shall forthwith be delivered to Pledgee to hold as, Pledged Equity
and shall, if received by Pledgor, be received in trust for the benefit of
Pledgee, be segregated from the other 


                                      12


property or funds of Pledgor, and be forthwith delivered to Pledgee in the 
exact form received with any necessary indorsement or appropriate stock 
powers duly executed in blank, to be held by Pledgee as Collateral.

     (b)  Upon the occurrence and during the continuance of a Default or an
Event of Default:

          (i)     all rights of Pledgor to receive and retain the dividends
     and interest payments which Pledgor would otherwise be authorized to
     receive and retain pursuant to subsection (a) of this section shall
     automatically cease, and all such rights shall thereupon become vested in
     Pledgee which shall thereupon have the right to receive and hold as Pledged
     Equity such dividends and interest payments;

          (ii)    without limiting the generality of the foregoing, Pledgee
     may at its option exercise any and all rights of conversion, exchange,
     subscription or any other rights, privileges or options pertaining to any
     of the Pledged Equity (except voting rights) as if it were the absolute
     owner thereof, including, without limitation, the right to exchange, in its
     discretion, any and all of the Pledged Equity upon the merger,
     consolidation, reorganization, recapitalization or other adjustment of
     Pledgor or any of its Subsidiaries, or upon the exercise by Pledgor or any
     of its Subsidiaries of any right, privilege or option pertaining to any
     Pledged Equity, and, in connection therewith, to deposit and deliver any
     and all of the Pledged Equity with any committee, depository, transfer
     agent, registrar or other designated agent upon such terms and conditions
     as it may determine; and

          (iii)   all dividends and interest payments which are received by
     Pledgor contrary to the provisions of subsection (b) (i) of this section
     shall be received in trust for the benefit of Pledgee, shall be segregated
     from other funds of Pledgor, and shall be forthwith paid over to Pledgee as
     Pledged Equity in the exact form received, to be held by Pledgee  as
     Collateral.

Anything herein to the contrary notwithstanding, Pledgee may not exercise any
voting rights pertaining to the Pledged Equity and Pledgor may at all times
exercise any and all voting rights pertaining to the Pledged Equity or any part
thereof for any purpose not inconsistent with the terms of this Agreement or any
other Obligation Document; PROVIDED, HOWEVER, upon the occurrence and during the
continuance of a Default or an Event of Default, Pledgor will not exercise or
refrain from exercising any such right, as the case may be, if Pledgee gives
notice that, in Pledgee's judgment, such action would result in a Material
Adverse Change with respect to the value of the Pledged Equity or the benefits
to Pledgee of its security interest hereunder.  

     Section 4.8.   PRIVATE SALE OF PLEDGED EQUITY.  Pledgor recognizes that
Pledgee may deem it impracticable to effect a public sale of all or any part of
the Pledged Equity and that Pledgee may, therefore, determine to make one or
more private sales of any such securities to a restricted group of purchasers
who will be obligated to agree, among other things, to acquire 


                                      13


such securities for their own account, for investment and not with a view to 
the distribution or resale thereof.  Pledgor acknowledges that any such 
private sale may be at prices and on terms less favorable to the seller than 
the prices and other terms which might have been obtained at a public sale 
and, notwithstanding the foregoing, agrees that such private sales shall be 
deemed to have been made in a commercially reasonable manner and that Pledgee 
shall have no obligation to delay the sale of any such securities for the 
period of time necessary to permit Pledgor to register such securities (with 
no obligation of Pledgor to accomplish such registration) for public sale 
under the Securities Act of 1933, as amended. Pledgor further acknowledges 
and agrees that any offer to sell such securities which has been (a) publicly 
advertised on a BONA FIDE basis in a newspaper or other publication of 
general circulation in the financial community of Dallas, Texas (to the 
extent that such an offer may be so advertised without prior registration 
under the Securities Act), or (b) made privately in the manner described 
above to not less than fifteen (15) BONA FIDE offerees shall be deemed to 
involve a "public sale" for the purposes of Section 9.504(c) of the Code (or 
any successor or similar, applicable statutory provision) as then in effect 
in the State of Texas, notwithstanding that such sale may not constitute a 
"public offering" under the Securities Act of 1933, as amended, and that 
Pledgee may, in such event, bid for the purchase of such securities.

                                     ARTICLE V

                                   MISCELLANEOUS

     Section 5.1.   NOTICES.  Any notice or communication required or permitted
hereunder shall be given in writing, sent by personal delivery, by telecopy, by
delivery service with proof of delivery, or by registered or certified United
States mail, postage prepaid, addressed to the appropriate party as follows:

          TO PLEDGOR:      _________________________________
                           _________________________________
                           _________________________________
                           Fax No.: (___)___________________

          TO PLEDGEE:      NationsBank, N.A.,
                           as Administrative Agent for Banks
                           901 Main Street, 64th Floor
                           Dallas, Texas 75202
                           Fax No. (214) 508-1285

or to such other address or to the attention of such other individual as
hereafter shall be designated in writing by the applicable party sent in
accordance herewith. Any such notice or communication shall be deemed to have
been given (a) in the case of personal delivery or delivery service, as of the
date of first attempted delivery at the address or in the manner 


                                      14


provided herein, (b) in the case of telecopy, upon receipt, or (c) in the 
case of registered or certified United States mail, three (3) days after 
deposit in the mail.

     Section 5.2.   AMENDMENTS.  No amendment of any provision of this Agreement
shall be effective unless it is in writing and signed by Pledgor, Pledgee and
Banks, and no waiver of any provision of this Agreement, and no consent to any
departure by Pledgor therefrom, shall be effective unless it is in writing and
signed by Pledgee and Banks, and then such waiver or consent shall be effective
only in the specific instance and for the specific purpose for which given and
to the extent specified in such writing.

     Section 5.3.   PRESERVATION OF RIGHTS.  No failure on the part of Pledgee
or any Bank to exercise, and no delay in exercising, any right hereunder or
under any other Obligation Document shall operate as a waiver thereof; nor shall
any single or partial exercise of any such right preclude any other or further
exercise thereof or the exercise of any other right.  Neither the execution nor
the delivery of this Agreement shall in any manner impair or affect any other
security for the Obligations.  The rights and remedies of Pledgee and Banks
provided herein and in the other Obligation Documents are cumulative of and are
in addition to, and not exclusive of, any rights or remedies provided by law. 
The rights of Pledgee and Banks under any Obligation Document against any party
thereto are not conditional or contingent on any attempt by Pledgee or Banks to
exercise any of its rights under any other Obligation Document against such
party or against any other Person.

     Section 5.4.   UNENFORCEABILITY.  Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or invalidity without
invalidating the remaining portions hereof or thereof or affecting the validity
or enforceability of such provision in any other jurisdiction.

     Section 5.5.   SURVIVAL OF AGREEMENTS.  All representations and warranties
of Pledgor herein, and all covenants and agreements herein shall survive the
execution and delivery of this Agreement, the execution and delivery of any
other Obligation Documents and the creation of the Obligations.

     Section 5.6.   OTHER LIABLE PARTY.  Neither this Agreement nor the exercise
by Pledgee or any Bank or the failure of Pledgee or any Bank to exercise any
right, power or remedy conferred herein or by law shall be construed as
relieving any Other Liable Party from liability on the Obligations or any
deficiency thereon.  This Agreement shall continue irrespective of the fact that
the liability of any Other Liable Party may have ceased or irrespective of the
validity or enforceability of any other Obligation Document to which Pledgor or
any Other Liable Party may be a party, and notwithstanding the reorganization,
death, incapacity or bankruptcy of any Other Liable Party, and notwithstanding
the reorganization or bankruptcy or other event or proceeding affecting any
Other Liable Party.


                                      15


     Section 5.7.   BINDING EFFECT AND ASSIGNMENT.  This Agreement creates a
continuing security interest in the Collateral and (a) shall be binding on
Pledgor and its successors and permitted assigns, and (b) shall inure, together
with all rights and remedies of Pledgee hereunder, to the benefit of Pledgee and
Banks and their respective successors, transferees and assigns.  Without
limiting the generality of the foregoing, Pledgee and Banks may pledge, assign
or otherwise transfer any or all of their respective rights under any or all of
the Obligation Documents to any other Person, and such other Person shall
thereupon become vested with all of the benefits in respect thereof granted
herein or otherwise.  None of the rights or duties of Pledgor hereunder may be
assigned or otherwise transferred without the prior written consent of Pledgee
and Banks.

     Section 5.8.   TERMINATION.  It is contemplated by the parties hereto that
there may be times when no Obligations are outstanding, but notwithstanding such
occurrences, this Agreement shall remain valid and shall be in full force and
effect as to subsequent outstanding Obligations.  Upon the satisfaction in full
of the Obligations, upon the termination or expiration of the Credit Agreement
and any other Commitment of Banks to extend credit to Borrower, and upon written
request for the termination hereof delivered by Pledgor to Pledgee and Banks,
this Agreement and the security interest created hereby shall terminate and all
rights to the Collateral shall revert to Pledgor.  Pledgee will, upon Pledgor's
request and at Pledgor's expense, (a) return to Pledgor such of the Collateral
as shall not have been sold or otherwise disposed of or applied pursuant to the
terms hereof, and (b) execute and deliver to Pledgor such documents as Pledgor
shall reasonably request to evidence such termination.

     SECTION 5.9.   GOVERNING LAW.  THIS AGREEMENT SHALL BE CONSTRUED IN
ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF TEXAS AND THE LAWS OF
THE UNITED STATES OF AMERICA.

     Section 5.10.  COUNTERPARTS.  This Agreement may be separately executed in
any number of counterparts, all of which when so executed shall be deemed to
constitute one and the same Agreement.

     Section 5.11.  LOAN PAPER.  This Agreement is a "Loan Paper", as defined in
the Credit Agreement, and, except as expressly provided herein to the contrary,
this Agreement is subject to all provisions of the Credit Agreement governing
such Loan Paper.


                                      16


     IN WITNESS WHEREOF, Pledgor has caused this Agreement to be executed and
delivered by its officer thereunto duly authorized, as of the date first above
written.


                                       [QUICKSILVER RESOURCES INC.,
                                       A DELAWARE CORPORATION]

                                       [FIRST TIER SUBSIDIARY]



                                       By:
                                          -------------------------------
                                       Name:
                                            -----------------------------
                                       Title:
                                             ----------------------------





                                      17


                                       
                                  EXHIBIT B

                                     NOTE


$______________     Dallas, Texas  ________, 1999


     FOR VALUE RECEIVED, the undersigned, Quicksilver Resources Inc., a 
Delaware corporation ("MAKER"), promises to pay to the order of [Name of Bank]
 ("PAYEE"), at the offices of NationsBank, N.A., as Administrative Agent 
(herein so called), at 901 Main Street, 64th Floor, Dallas, Texas 75202, for 
Payee, the principal sum of _________________ and No/100 Dollars 
($_______________), or so much thereof as may be advanced and outstanding, 
together with interest, as hereinafter described.

     This Note has been executed and delivered pursuant to, and is subject to 
and governed by, the terms of that certain Second Amended and Restated Credit 
Agreement dated as of March 1, 1999 (as hereafter renewed, extended, amended, 
or supplemented, the "AGREEMENT") among Maker, Payee, Administrative Agent 
and the other Banks named therein, and is one of the "NOTES" referred to 
therein. Unless otherwise defined herein or unless the context hereof 
otherwise requires, each term used herein with its initial letter capitalized 
has the meaning given to such term in the Agreement.

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

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

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

     Upon the occurrence and continuance of an Event of Default, and upon the 
conditions stated in the Agreement, Administrative Agent may, at its option, 
and shall, to the extent required in accordance with the terms of the 
Agreement, declare the entire unpaid principal of and accrued interest on 
this Note immediately due and payable (PROVIDED THAT, upon the occurrence of 
certain Events of Default, and upon the conditions stated in the Agreement, 
such acceleration shall be automatic), without notice (except as otherwise 
required by the Agreement), demand, or presentment, all of which are hereby 
waived, and the holder hereof shall have the 

                                       1


right to offset against this Note any sum or sums owed by the holder hereof 
to Maker.  All past-due principal of and, to the extent permitted by law, 
accrued interest on this Note shall, at the option of the holder hereof, bear 
interest at the lesser of (a) the Maximum Lawful Rate or (b) the Default Rate 
until paid from the due date.

     Notwithstanding the foregoing, if at any time, any rate of interest 
calculated under Section 3.3 of the Agreement (the "CONTRACT RATE") exceeds 
the Maximum Lawful Rate, the rate of interest hereunder shall be limited to 
the Maximum Lawful Rate, but any subsequent reductions in the Contract Rate 
shall not reduce the rate of interest on this Note below the Maximum Lawful 
Rate until the total amount of interest accrued equals the amount of interest 
which would have accrued (including the amount of interest which would have 
accrued prior to the payment or prepayment of any portion of this Note) if 
the Contract Rate had at all times been in effect.  In the event that at 
maturity (stated or by acceleration), or at final payment of this Note, the 
total amount of interest paid or accrued on this Note is less than the amount 
of interest which would have accrued if the Contract Rate had at all times 
been in effect with respect thereto, then at such time the Maker shall pay to 
the holder of this Note an amount equal to the difference between (a) the 
lesser of the amount of interest which would have accrued if the Contract 
Rate had at all times been in effect and the amount of interest which would 
have accrued if the Maximum Lawful Rate had at all times been in effect, and 
(b) the amount of interest actually paid or accrued on this Note.

                              QUICKSILVER RESOURCES INC.,
                              a Delaware corporation



                              By:  
                                 --------------------------------
                              Name:     
                                   ------------------------------
                              Title:    
                                    -----------------------------


                                       2


                          ADVANCES, MATURITIES, AND
                      PAYMENTS OF PRINCIPAL AND INTEREST



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                    Payee's
                   Commitment      Expiration     Rate of Interest    Amount of                     Unpaid
Borrowing Date   Percentage of     of Interest      Applicable to     Principal     Amount of      Principal  Notation
                   Borrowing         Period           Tranche           Paid      Interest Paid     Balance    Made By
- - ----------------------------------------------------------------------------------------------------------------------
- - ----------------------------------------------------------------------------------------------------------------------
                                                                                         

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

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

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

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

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

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

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

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

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

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

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


                                       3


                                  EXHIBIT C

                                   GUARANTY

     THIS GUARANTY (this "GUARANTY") is dated as of the ____ day of 
__________, _____, by [SUBSIDIARY OF BORROWER], a ___________________ 
("GUARANTOR"), in favor of NATIONSBANK, N.A., PARIBAS, FROST NATIONAL BANK, 
BANK ONE, TEXAS, N.A. and each of the other financial institutions listed on 
Schedule 1 to the Credit Agreement (as hereinafter defined) as Banks, and 
each of their successors and assigns as permitted pursuant to the Credit 
Agreement (NationsBank, N.A. acting as a Bank but not as Administrative 
Agent, Paribas, Frost National Bank, Bank One, Texas, N.A., each of the other 
Banks listed on Schedule 1 of the Credit Agreement, and each of their 
successors and assigns are collectively referred to herein as "NOTEHOLDERS").

                             W I T N E S S E T H:

     WHEREAS, Quicksilver Resources Inc., a Delaware corporation 
("BORROWER"), Noteholders and NationsBank, N.A., as Administrative Agent 
("ADMINISTRATIVE AGENT") are parties to that certain Second Amended and 
Restated Credit Agreement (as amended, the "CREDIT AGREEMENT") dated as of 
March 1, 1999, pursuant to which Noteholders have made a revolving credit 
loan to Borrower and agreed to issue and participate in letters of credit 
issued on behalf of Borrower (unless otherwise defined herein, all terms used 
herein with their initial letter capitalized shall have the meaning given 
such terms in the Credit Agreement); and

     WHEREAS, Noteholders have required, as a condition to the continued 
extension of credit under the Credit Agreement, that Guarantor execute and 
deliver this Guaranty; and

     WHEREAS, Guarantor has determined that valuable benefits will be derived 
by it as a result of the Credit Agreement and the extension of credit made 
(and to be made) by Noteholders thereunder; and

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

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

     1.   Guarantor hereby absolutely and unconditionally guarantees the 
prompt, complete and full payment when due, no matter how such shall become 
due, of the Obligations, and further guarantees that Borrower will properly 
and timely perform the Obligations.  Notwithstanding any contrary provision 
in this Guaranty, however, Guarantor's maximum liability under this Guaranty 
is limited, to the extent, if any, required so that its liability is not 



subject to avoidance under applicable Debtor Relief Laws (as such term is 
defined in PARAGRAPH 8 hereof).

     2.   If Guarantor is or becomes liable for any indebtedness owing by 
Borrower to any Noteholder by endorsement or otherwise than under this 
Guaranty, such liability shall not be in any manner impaired or affected 
hereby, and the rights of Noteholders hereunder shall be cumulative of any 
and all other rights that Noteholders may ever have against Guarantor.  The 
exercise by any Noteholder of any right or remedy hereunder or under any 
other instrument, at law or in equity, shall not preclude the concurrent or 
subsequent exercise of any other right or remedy.  

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

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

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

     6.   If all or any part of the Obligations at any time are secured, 
Guarantor agrees that Administrative Agent and/or Noteholders may at any time 
and from time to time, at their discretion and with or without valuable 
consideration, allow substitution or withdrawal of collateral or other 
security and release collateral or other security or compromise or settle any 
amount due or owing under the Credit Agreement or amend or modify in whole or 
in part the Credit Agreement or any Loan Paper executed in connection with 
same without impairing or diminishing the obligations of Guarantor hereunder. 
Guarantor further agrees that if Borrower 

                                       2


executes in favor of any Noteholder any collateral agreement, mortgage or 
other security instrument, the exercise by any Noteholder of any right or 
remedy thereby conferred on such Noteholder shall be wholly discretionary 
with such Noteholder, and that the exercise or failure to exercise any such 
right or remedy shall in no way impair or diminish the obligation of 
Guarantor hereunder.  Guarantor further agrees that Noteholders and 
Administrative Agent shall not be liable for their failure to use diligence 
in the collection of the Obligations or in preserving the liability of any 
person liable for the Obligations, and Guarantor hereby waives presentment 
for payment, notice of nonpayment, protest and notice thereof (including, 
notice of acceleration), and diligence in bringing suits against any Person 
liable on the Obligations, or any part thereof.

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

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

     9.   Guarantor covenants and agrees that until the Obligations are paid 
and performed in full, except as otherwise provided in the Credit Agreement 
or unless Noteholders give their prior written consent to any deviation 
therefrom, it will (i) at all times maintain its existence and authority to 
transact business in any State or jurisdiction where Guarantor has assets and 
operations, (ii) promptly deliver to Noteholders and to Administrative Agent 
such information respecting its business affairs, assets and liabilities as 
Noteholders may reasonably request, and (iii) duly and punctually observe and 
perform all covenants applicable to Guarantor under the 

                                       3


Credit Agreement and the other Loan Papers.  The failure of Guarantor to 
comply with the terms of this paragraph shall be an Event of Default under 
the Credit Agreement.

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

     11.  No modification, consent, amendment or waiver of any provision of 
this Guaranty, nor consent to any departure by Guarantor therefrom, shall be 
effective unless the same shall be in writing and signed by each Noteholder, 
and then shall be effective only in the specific instance and for the purpose 
for which given.  No notice to or demand on Guarantor in any case shall, of 
itself, entitle Guarantor to any other or further notice or demand in similar 
or other circumstances.  No delay or omission by Noteholders in exercising 
any power or right hereunder shall impair any such right or power or be 
construed as a waiver thereof or any acquiescence therein, nor shall any 
single or partial exercise of any such power preclude other or further 
exercise thereof, or the exercise of any other right or power hereunder.  All 
rights and remedies of Noteholders hereunder are cumulative of each other and 
of every other right or remedy which Noteholders may otherwise have at law or 
in equity or under any other contract or document, and the exercise of one or 
more rights or remedies shall not prejudice or impair the concurrent or 
subsequent exercise of other rights or remedies.

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

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

     14.  (a)  The liability of Guarantor under this Guaranty shall in no 
manner be impaired, affected or released by the insolvency, bankruptcy, 
making of an assignment for the benefit of creditors, arrangement, 
compensation, composition or readjustment of Borrower, or 

                                       4


any proceedings affecting the status, existence or assets of Borrower or 
other similar proceedings instituted by or against Borrower and affecting the 
assets of Borrower. 

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

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

     15.  Guarantor understands and agrees that any amounts of Guarantor on 
account with any Noteholder may be offset to satisfy the obligations of 
Guarantor hereunder.

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

     17.  During the period that Banks have any commitment to lend or 
participate in Letter of Credit Exposure under the Loan Papers, or any amount 
payable under any Note remains unpaid or any Letter of Credit remains 
outstanding, and throughout any additional preferential period subsequent 
thereto, Guarantor hereby waives any and all rights of subrogation to which 
Guarantor may otherwise be entitled against Borrower, or any other guarantor 
of the Obligations, as a result of any payment made by Guarantor pursuant to 
this Guaranty.

     18.  As of the date hereof, the fair saleable value of the property of 
Guarantor is greater than the total amount of liabilities (including 
contingent and unliquidated liabilities) of Guarantor, and Guarantor is able 
to pay all of its liabilities as such liabilities mature and 

                                       5


Guarantor does not have unreasonably small capital within the meaning of 
Section 548, Title 11, United States Code, as amended.  In computing the 
amount of contingent or liquidated liabilities, such liabilities have been 
computed at the amount which, in light of all the facts and circumstances 
existing as of the date hereof, represents the amount that can reasonably be 
expected to become an actual or matured liability.

     19.  If any provision of this Guaranty is held to be illegal, invalid, 
or unenforceable, such provision shall be fully severable; this Guaranty 
shall be construed and enforced as if such illegal, invalid, or unenforceable 
provision had never comprised a part hereof; and the remaining provisions 
hereof shall remain in full force and effect and shall not be affected by the 
illegal, invalid, or unenforceable provision or by its severance herefrom.  
Furthermore, in lieu of such illegal, invalid, or unenforceable provision 
there shall be added automatically as a part of this Guaranty a provision as 
similar in terms to such illegal, invalid, or unenforceable provision as may 
be possible and be legal, valid and enforceable.      20.  (a)  Except to the 
extent required for the exercise of the remedies provided in the other 
security instruments, Guarantor hereby irrevocably submits to the 
nonexclusive jurisdiction of any Texas state or federal court over any action 
or proceeding arising out of or relating to this Guaranty or any other Loan 
Paper, and Guarantor hereby irrevocably agrees that all claims in respect of 
such action or proceeding may be heard and determined in such Texas state or 
federal court.  Guarantor hereby irrevocably waives, to the fullest extent 
permitted by Law, any objection which it may now or hereafter have to the 
laying of venue of any Litigation arising out of or in connection with this 
Guaranty or any of the Loan Papers brought in district courts of Dallas 
County, Texas, or in the United States District Court for the Northern 
District of Texas, Dallas Division.  Guarantor hereby irrevocably waives any 
claim that any Litigation brought in any such court has been brought in an 
inconvenient forum.  Guarantor hereby irrevocably consents to the service of 
process out of any of the aforementioned courts in any such Litigation by the 
mailing of copies thereof by certified mail, return receipt requested, 
postage prepaid, to Guarantor's office at _____________________ 
_______________________.  Guarantor irrevocably agrees that any legal 
proceeding against Noteholders shall be brought in the district courts of 
Dallas County, Texas, or in the United States District Court for the Northern 
District of Texas, Dallas Division.  Nothing herein shall affect the right of 
Noteholder to commence legal proceedings or otherwise proceed against 
Guarantor in any jurisdiction or to serve process in any manner permitted by 
applicable law.  As used herein, the term "LITIGATION" means any proceeding, 
claim, lawsuit or investigation (i) conducted or threatened by or before any 
court or governmental department, commission, board, bureau, agency or 
instrumentality of the United States or of any state, commonwealth, nation, 
territory, possession, county, parish, or municipality, whether now or 
hereafter constituted or existing, or (ii) pending before any public or 
private arbitration board or panel.

          (b)  Nothing in this PARAGRAPH 20 shall affect any right of any 
Noteholder to serve legal process in any other manner permitted by law or 
affect the right of any Noteholder to bring any action or proceeding against 
Guarantor in the courts of any other jurisdictions.

                                       6


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

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

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

     23.  THIS GUARANTY AND THE OTHER LOAN PAPERS SHALL BE CONSTRUED IN 
ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF TEXAS.  

                          [Signature page to follow]







                                       7


     EXECUTED and effective as of the date first above written.

                                   GUARANTOR:

                                   [SUBSIDIARY OF BORROWER]


                                   By:  
                                      --------------------------------
                                   Name:     
                                        ------------------------------
                                   Title:    
                                         -----------------------------




                                       8


                                  EXHIBIT D

                            REQUEST FOR BORROWING


     Reference is made to that certain Second Amended and Restated Credit 
Agreement dated as of March 1, 1999 (as from time to time amended, the 
"AGREEMENT") by and among Quicksilver Resources Inc. ("BORROWER"), 
NationsBank, N.A., as Administrative Agent, and certain Banks as named and 
defined therein. Terms which are defined in the Agreement and which are used 
but not defined herein are used herein with the meanings given them in the 
Agreement.  Pursuant to the terms of the Agreement, Borrower hereby requests 
a Borrowing in the amount of $_____________ to be advanced on _______________, 
__________.

     Borrower requests that the Borrowing to be made hereunder shall be 
[A BASE RATE BORROWING] [A EURODOLLAR BORROWING], shall be in the aggregate 
amount set forth below, and shall have the Interest Period(s) set forth below:



     TYPE OF BORROWING             AGGREGATE AMOUNT              INTEREST PERIOD
     -----------------             ----------------              ---------------
                                                           

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

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

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



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

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

          (b)  The representations and warranties of Borrower and each other
     Credit Party set forth in the Agreement and the Loan Papers delivered to
     Administrative Agent and Banks are true and correct on and as of the date
     hereof, with the same effect as though such representations and warranties
     had been made on and as of the date hereof or, if such representations and
     warranties are expressly limited to particular dates, as of such particular
     dates.  No Material Adverse Change has occurred with respect to any Credit
     Party since the date of the last financial reports delivered to Banks
     pursuant to SECTION 10.1 of the Agreement.

          (c)  There does not exist on the date hereof, any condition or event
     which constitutes a Default or Event of Default, nor will any such Default
     or Event of Default 

                                       1


     exist upon Borrower's receipt and application of the proceeds requested 
     hereby.  Borrower will use the proceeds hereby requested in compliance with
     the applicable provisions of the Agreement.

          (d)  After giving effect to the Borrowing requested hereby, the
     Outstanding Credit will not be in excess of the Borrowing Base.

     IN WITNESS WHEREOF, this instrument is executed as of ____________, _____.


                              QUICKSILVER RESOURCES INC.,
                              a Delaware corporation


                              By:                           
                                 --------------------------------
                              Name:                              
                                   ------------------------------
                              Title:                             
                                    -----------------------------




                                       2


                                   EXHIBIT E

                          REQUEST FOR LETTER OF CREDIT

     Reference is made to that certain Second Amended and Restated Credit 
Agreement dated as of March 1, 1999 (as from time to time amended, the 
"AGREEMENT"), by and among Quicksilver Resources Inc. ("BORROWER"), 
NationsBank, N.A., as Administrative Agent, and certain Banks as named and 
defined therein. Terms which are defined in the Agreement and which are used 
but not defined herein are used herein with the meanings given them in the 
Agreement.

     Pursuant to the terms of the Agreement, Borrower hereby requests 
NationsBank, N.A., as Administrative Agent ("ISSUER") to issue a Letter of 
Credit for the account of Borrower, as follows:



          Type of Commitment:
          -------------------
                                     
          Requested Amount              $________________________
          Requested Date of Issuance    _________________________
          Requested Expiration Date     _________________________
          Summary of Terms              _________________________
          (provide a brief description
          of conditions under which the
          drafts under such Letter of
          Credit are to be available)   _________________________
          Beneficiary (Name/Address)    _________________________
                                        _________________________
                                        _________________________
                                        _________________________


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

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

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

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

                                       1


     such representations and warranties are expressly limited to particular 
     dates, as of such particular dates.  No Material Adverse Change has 
     occurred with respect to a Credit Party since the date of the last 
     financial reports delivered to Banks pursuant to SECTION 10.1 of the 
     Agreement.
          (c)  There does not exist on the date hereof any condition or event
     which constitutes a Default or Event of Default, nor will any such Default
     or Event of Default exist upon the issuance of the Letter of Credit
     requested hereby.  Borrower will use the Letter of Credit solely for
     purposes permitted by the Agreement.

          (d)  After the issuance of the Letter of Credit requested hereby, the
     Outstanding Credit will not be in excess of the Borrowing Base. 

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


                              QUICKSILVER RESOURCES INC.,
                              a Delaware corporation


                              By:                           
                                 --------------------------------
                              Name:                              
                                   ------------------------------
                              Title:                             
                                    -----------------------------



                                       2


                                   EXHIBIT F

                      NOTICE OF CONTINUATION OR CONVERSION

     Reference is made to that certain Second Amended and Restated Credit 
Agreement dated as of March 1, 1999 (as from time to time amended, the 
"AGREEMENT"), by and among Quicksilver Resources Inc. ("BORROWER"), 
NationsBank, N.A., as Administrative Agent, and certain Banks as named and 
defined therein. Terms which are defined in the Agreement and which are used 
but not defined herein are used herein with the meanings given them in the 
Agreement.  

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

     -    Borrower hereby requests that on _______________, ____, a portion of
          the principal of the Base Rate Loan in the amount of $_________ be
          made the subject of a Eurodollar  Loan having an Interest Period of
          ____________ (___) months.

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

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

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

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


                                       1


     IN WITNESS WHEREOF, this instrument is executed as of ________, ____. 

                                   QUICKSILVER RESOURCES INC.,
                                   a Delaware corporation

                                   By:  
                                      ----------------------------------
                                   Name:     
                                        --------------------------------
                                   Title:    
                                         -------------------------------








                                       2

                                       
                                   EXHIBIT G

                       CERTIFICATE OF OWNERSHIP INTERESTS

     This Certificate of Ownership Interests (this "CERTIFICATE") is executed 
and delivered pursuant to that certain Second Amended and Restated Credit 
Agreement dated as of March 1, 1999 (as amended from time to time, the 
"AGREEMENT"), by and among Quicksilver Resources Inc. ("BORROWER"), 
NationsBank, N.A., as Administrative Agent, and certain Banks as named and 
defined therein. Unless otherwise defined herein, all capitalized terms shall 
have the meanings given such terms in the Agreement.

     In order to induce Banks to extend credit to Borrower under the 
Agreement, Borrower hereby represents and warrants to Administrative Agent 
and each Bank that (a) EXHIBIT A attached hereto (the "PROPERTY DESCRIPTION") 
is a complete and accurate description of all Mineral Interests described in 
the Initial Reserve Reports (the "INITIAL BORROWING BASE PROPERTIES"), (b) 
after giving effect to the Closing Transactions, Borrower holds good and 
defensible title, subject only to Permitted Encumbrances and Immaterial Title 
Deficiencies, to the Initial Borrowing Base Properties described in the 
Property Description, (c) after giving effect to the Closing Transactions, 
Borrower's share of (i) the costs for each of the Initial Borrowing Base 
Properties is not greater than the decimal fraction set forth in the Initial 
Reserve Reports, before and after payout, as the case may be, and described 
therein by the respective designations "working interests," "WI," "gross 
working interest," "GWI," or similar terms (except in such cases where there 
is a corresponding increase in the net revenue interest), and (ii) production 
from, allocated to, or attributed to each of such Initial Borrowing Base 
Properties is not less than the decimal fraction set forth in the Initial 
Reserve Reports, before and after payout, as the case may be, and described 
therein by the designations "net revenue interest," "NRI," or similar terms, 
and (d) after giving effect to the Closing Transactions, each well drilled in 
respect of each of the Initial Borrowing Base Properties described in the 
Initial Reserve Reports (A) is capable of, and is presently, producing 
Hydrocarbons in commercially profitable quantities, Borrower is receiving 
payments for its share of production, with no funds in respect of any thereof 
being presently held in suspense, other than any such funds being held in 
suspense pending delivery of appropriate division orders, and (B) has been 
drilled, bottomed, completed and operated in compliance with all applicable 
Laws and no such well which is currently producing Hydrocarbons is subject to 
any penalty in production by reason of such well having produced in excess of 
its allowable production.

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

                                       1


     Executed as of the 4th day of March, 1999.

                                   QUICKSILVER RESOURCES INC.,
                                   a Delaware corporation


                                   By:  
                                      ----------------------------
                                        Glenn Darden,
                                        President












                                       2


                                   EXHIBIT A

                       Initial Borrowing Base Properties
                                (to be attached)















                                       3


                                   EXHIBIT H

                       CERTIFICATE OF FINANCIAL OFFICER

     The undersigned, the ____________ of Quicksilver Resources Inc., a 
Delaware corporation ("BORROWER") hereby (a) delivers this Certificate 
pursuant to SECTION 10.1(c) of that certain Second Amended and Restated 
Credit Agreement ("CREDIT AGREEMENT") dated as of March 1, 1999, by and among 
Borrower, NationsBank, N.A., as Administrative Agent, and the financial 
institutions listed on Schedule 1 thereto, as Banks ("BANKS"), and (b) 
certifies to Banks, with the knowledge and intent that Banks may, without any 
independent investigation, rely fully on the matters herein in connection 
with the Credit Agreement, as follows:

     1.   Attached hereto as SCHEDULE I are the financial statements of 
Borrower as of and for the Fiscal - Year - Quarter (check one) ended 
____________, ____.

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

     3.   Attached hereto as SCHEDULE II are detailed calculations used by 
Borrower to establish that Borrower was in compliance with the requirements 
of Article XII of the Credit Agreement on the date of the financial 
statements attached as SCHEDULE I hereto.

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

     5.   On the date hereof (a) (check one)  there is no Material Gas 
Imbalance or  the amount of the net gas imbalances under Gas Balancing 
Agreements to which Borrower is a party or by which any Mineral Interests 
owned by Borrower or any of its Subsidiaries is bound is 
____________________, and (b) the aggregate amount of all Advance Payments 
received under Advance Payment Contracts to which any Credit Party is a party 
or by which any Mineral Interests owned by Borrower or any other Credit Party 
is bound which have not been satisfied by delivery of production, if any, is 
_______________________________.

     6.   Attached hereto as SCHEDULE IV is a summary of the Hedge 
Transactions to which Borrower or any other Credit Party is a party on the 
date hereof.

     7.   Unless otherwise described on SCHEDULE V attached hereto and 
incorporated herein by reference for all purposes, the representations and 
warranties of Borrower and each 

                                       1


other Credit Party set forth in the Credit Agreement and the other Loan 
Papers are true and correct on and as of the date hereof,  with the same 
effect as though such representations and warranties had been made on and as 
of the date hereof, or if such representations and warranties are expressly 
limited to particular dates, as of such particular dates.

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

     IN WITNESS WHEREOF, the undersigned has duly executed this Certificate 
of Financial Officer as of ___________, ____.

                              
                                   QUICKSILVER RESOURCES INC.,
                                   a Delaware corporation

     
                                   By:       
                                      ----------------------------------
                                   Name:          
                                        --------------------------------
                                   Title:         
                                         -------------------------------





                                       2


                                  SCHEDULE I

                             Financial Statements
                               (to be attached)











                                       3


                                 SCHEDULE II

                           Compliance Calculations
                               (to be attached)












                                       4


                                 SCHEDULE III

                           Defaults/Remedial Action
                               (to be attached)




















                                       5


                                 SCHEDULE IV

                        Summary of Hedge Transactions
                               (to be attached)
















                                       6


                                  SCHEDULE V

               Qualifications to Representations and Warranties
                               (to be attached)

















                                       7


                                  EXHIBIT I

                          ASSIGNMENT AND ACCEPTANCE

     Reference is made to that certain Second Amended and Restated Credit 
Agreement dated as of March 1, 1999 (the "CREDIT AGREEMENT") among 
Quicksilver Resources Inc., ("BORROWER"), NationsBank, N.A., as 
Administrative Agent ("ADMINISTRATIVE AGENT"), and the financial institutions 
listed on Schedule 1 thereto, as Banks ("BANKS"). Terms defined in the Credit 
Agreement are used herein with the same meaning.
     
     The "Assignor" and the "Assignee" referred to on Schedule 1 agree as 
follows:
     
     1.   Assignor hereby sells and assigns to Assignee, without recourse and 
without representation or warranty except as expressly set forth herein, and 
Assignee hereby purchases and assumes from Assignor, an interest in and to 
Assignor's rights and obligations under the Credit Agreement and the other 
Loan Papers as of the date hereof equal to the percentage interest specified 
on SCHEDULE 1 of all outstanding rights and obligations under the Credit 
Agreement and the other Loan Papers.  After giving effect to such sale and 
assignment, Assignee's Commitment, Assignee's Commitment Percentage and the 
principal amount of the Loan owing to Assignee will be as set forth on 
SCHEDULE 1.
     
     2.   Assignor (i) represents and warrants that it is the legal and
beneficial owner of the interest being assigned by it hereunder and that such
interest is free and clear of any adverse claim; (ii) makes no representation or
warranty and assumes no responsibility with respect to any statements,
warranties or representations made in or in connection with the Loan Papers or
the execution, legality, validity, enforceability, genuineness, sufficiency or
value of the Loan Papers or any other instrument or document furnished pursuant
thereto; (iii) makes no representation or warranty and assumes no responsibility
with respect to the financial condition of Borrower or the performance or
observance by Borrower of any of its obligations under the Loan Papers or any
other instrument or document furnished pursuant thereto; and (iv) attaches the
Note held by Assignor and requests that Administrative Agent exchange such Note
for new Notes payable to the order of Assignee in an amount equal to the
Commitment assumed by Assignee pursuant hereto and to Assignor in an amount
equal to the Commitment retained by Assignor, if any, as specified on SCHEDULE
1.

     3.   Assignee (i) confirms that it has received a copy of the Credit 
Agreement, together with copies of the financial statements referred to in 
Section 10.1 thereof and such other documents and information as it has 
deemed appropriate to make its own credit analysis and decision to enter into 
this Assignment and Acceptance; (ii) agrees that it will, independently and 
without reliance upon any Agent, Assignor or any other Bank and based on such 
documents and information as it shall deem appropriate at the time, continue 
to make its own credit decisions in taking or not taking action under the 
Credit Agreement; (iii) confirms that it is an Eligible Assignee; (iv) 
appoints and authorizes each Agent to take such action as agent on its behalf 
and to exercise such powers and discretion under the Credit Agreement as are 
delegated to each such 

                                       1


Agent by the terms thereof, together with such powers and discretion as are 
reasonably incidental thereto; (v) agrees that it will perform in accordance 
with their terms all of the obligations that by the terms of the Credit 
Agreement are required to be performed by it as a Bank; and (vi) attaches any 
U.S. Internal Revenue Service or other forms required under Section 5.6.
     
     4.   Following the execution of this Assignment and Acceptance, it will 
be delivered to Administrative Agent for acceptance and recording by 
Administrative Agent.  The effective date for this Assignment and Acceptance 
(the "EFFECTIVE DATE") shall be the date of acceptance hereof by 
Administrative Agent, unless otherwise specified on SCHEDULE 1.
     
     5.   Upon such acceptance and recording by Administrative Agent, as of 
the Effective Date, (i) Assignee shall be a party to the Credit Agreement 
and, to the extent provided in this Assignment and Acceptance, have the 
rights and obligations of a Bank thereunder, and (ii) Assignor shall, to the 
extent provided in this Assignment and Acceptance, relinquish its rights and 
be released from its obligations under the Credit Agreement.

     6.   Upon such acceptance and recording by Administrative Agent, from 
and after the Effective Date,  Administrative Agent shall make all payments 
under the Credit Agreement and the Notes in respect of the interest assigned 
hereby (including, without limitation, all payments of principal, interest 
and commitment fees with respect thereto) to Assignee.  Assignor and Assignee 
shall make all appropriate adjustments in payments under the Credit Agreement 
and the Notes for periods prior to the Effective Date directly between 
themselves.
     
     7.   This Assignment and Acceptance shall be governed by, and construed 
in accordance with, the laws of the State of Texas.
     
     8.   This Assignment and Acceptance may be executed in any number of 
counterparts and by different parties hereto in separate counterparts, each 
of which when so executed shall be deemed to be an original and all of which 
taken together shall constitute one and the same agreement. Delivery of an 
executed counterpart of SCHEDULE 1 to this Assignment and Acceptance by 
telecopier shall be effective as delivery of a manually executed counterpart 
of this Assignment and Acceptance.
     
     IN WITNESS WHEREOF, Assignor and Assignee have caused SCHEDULE 1 to this 
Assignment and Acceptance to be executed by their officers thereunto duly 
authorized as of the date specified thereon.
     
     
                                       2


                                  SCHEDULE 1
                                      to
                          ASSIGNMENT AND ACCEPTANCE

Percentage interest assigned:                     ________%

Assignee's Commitment:                            $_______

Assignee's Commitment Percentage:                 _______%

Aggregate outstanding principal amount
  of Loan assigned:                               $_______

Principal amount of Note payable to Assignee:     $_______

Principal amount of Note payable to Assignor:     $_______

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



                                       [NAME OF ASSIGNOR], as Assignor


                                       By:
                                          ------------------------------
                                       Title:
                                          ------------------------------

                                       Dated:               , 
                                              --------------  ------



                                       [NAME OF ASSIGNEE], as Assignee


                                       By:
                                          ------------------------------
                                       Title:
                                             ---------------------------

                                       Domestic Lending Office:

                                       Eurodollar Lending Office:

                                       3


*   This date should be no earlier than five Domestic Business Days after the
    delivery of this Assignment and Acceptance to Administrative Agent unless an
    earlier date is agreed to by Assignor, Assignee, Administrative Agent and
    Borrower.


Accepted and Approved
this     day of            , 
     ---        -----------  -----

NATIONSBANK, N.A., as Administrative Agent


By:
   ---------------------------
Name:
     -------------------------
Title:
      ------------------------


Approved this      day 
              ----
of             , 
   ------------  -------

QUICKSILVER RESOURCES INC.


By:
   ---------------------------
Name:
     -------------------------
Title:
      ------------------------


                                       
                                  EXHIBIT J

                         CERTIFICATE OF EFFECTIVENESS

     This Certificate of Effectiveness (this "CERTIFICATE") is executed the 
4th day of March, 1999 by and between Quicksilver Resources Inc. ("BORROWER") 
and NationsBank, N.A., as Administrative Agent ("ADMINISTRATIVE AGENT") for 
the Banks under and as defined in that certain Second Amended and Restated 
Credit Agreement (the "AGREEMENT") dated as of March 1, 1999 by and among 
Borrower, Administrative Agent, and the Banks named therein.  This 
Certificate is executed pursuant to SECTION 8.1 of the Agreement and is the 
"Certificate of Effectiveness" therein referenced.  Unless otherwise defined 
herein, all terms used herein with their initial letter capitalized shall 
have the meaning given such terms in the Agreement.  Borrower and 
Administrative Agent on behalf of itself and the Banks hereby acknowledge and 
agree as follows:

1.        Borrower has satisfied each condition precedent to the effectiveness
          of the Agreement contained in SECTION 8.1 of the Agreement.

1.        The Agreement is effective as of the date hereof.

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



                              By:  
                                 ----------------------------------------
                                   J. Scott Fowler,
                                   Vice President


                              QUICKSILVER RESOURCES INC.


                              By:  
                                 ----------------------------------------
                                   Glenn Darden,
                                   President

                                       1


                                  SCHEDULE 1

                            FINANCIAL INSTITUTIONS



        ------------------------------------------------------------------
        ------------------------------------------------------------------
                                        Commitment            Commitment
                  Banks                   Amount              Percentage
        ------------------------------------------------------------------
        ------------------------------------------------------------------
                                                       
        NationsBank, N.A.             $70,588,235.29         35.294117647%

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

        Paribas                       $58,823,529.41         29.411764706%

        ------------------------------------------------------------------
        ------------------------------------------------------------------
        Bank One, Texas, N.A.         $47,058,823.53         23.529411765%
        Frost National Bank           $23,529,411.76         11.764705882%

        ------------------------------------------------------------------
        ------------------------------------------------------------------
        Totals                         $200,000,000               100%

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




- - --------------------------------------------------------------------------------------------------------
- - --------------------------------------------------------------------------------------------------------
                               Domestic Lending          Eurodollar Lending 
       Banks                        Office                  Office                Address for Notice
- - --------------------------------------------------------------------------------------------------------
- - --------------------------------------------------------------------------------------------------------
                                                                        
 NationsBank, N.A.          901 Main Street            901 Main Street           901 Main Street
                            64th Floor                 64th Floor                64th Floor
                            Dallas, Texas  75202       Dallas, Texas 75202       Dallas, Texas 75202
                            Fax No. (214) 508-1285     Fax No. (214) 508-1285    Fax No. (214) 508-1285
- - --------------------------------------------------------------------------------------------------------
- - --------------------------------------------------------------------------------------------------------
 Bank One, Texas, N.A.      1717 Main Street           1717 Main Street          1717 Main Street
                            4th Floor                  4th Floor                 4th Floor 
                            Dallas, Texas  75201       Dallas, Texas 75201       Dallas, Texas 75201
                            Fax No. (214) 290-2332     Fax No. (214) 290-2332    Fax No. (214) 290-2332
- - --------------------------------------------------------------------------------------------------------
- - --------------------------------------------------------------------------------------------------------
 Paribas                    1200 Smith Street          1200 Smith Street         1200 Smith Street
                            Suite 3100                 Suite 3100                Suite 3100
                            Houston, Texas  77002      Houston, Texas  77002     Houston, Texas  77002
                            Fax No. (713) 659-6915     Fax No. (713) 659-6915    Fax No. (713) 659-6915
- - --------------------------------------------------------------------------------------------------------
- - --------------------------------------------------------------------------------------------------------
 Frost National Bank        Continental Plaza          Continental Plaza         Continental Plaza
                            777 Main Street            777 Main Street           777 Main Street
                            Ft. Worth, Texas           Ft. Worth, Texas          Ft. Worth, Texas 
                            76102-5304                 76102-5304                76102-5304      
                            Fax No. (817) 336-5615     Fax No. (817) 336-5615    Fax No. (817) 336-5615
- - --------------------------------------------------------------------------------------------------------
- - --------------------------------------------------------------------------------------------------------




ADMINISTRATIVE AGENT - ADDRESS

NATIONSBANK, N.A.
901 MAIN STREET, 64TH FLOOR
DALLAS, TEXAS  75202
ATTN:  SCOTT FOWLER
FAX NO. (214) 508-1285


                                       
                                  SCHEDULE 2

                                 INVESTMENTS



                                     NONE



                                  SCHEDULE 3

                                  LITIGATION



                                     NONE



                                  SCHEDULE 4

                                CAPITALIZATION



                               (TO BE ATTACHED)
                                          

                                          
                                  SCHEDULE 5
                                          
                           ENVIRONMENTAL DISCLOSURE



                                     NONE

March 26, 1999