APACHE CORP
8-K, 1996-10-31
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION

                            WASHINGTON, D. C.  20549

                                   FORM  8-K

                                 CURRENT REPORT

                      PURSUANT TO SECTION 13 OR 15 OF THE
                        SECURITIES EXCHANGE ACT OF 1934


                        Date of Report: October 31, 1996


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


                                    DELAWARE
                 (State or other jurisdiction of incorporation)

           1-4300                                   41-0747868
   (Commission File Number)          (I.R.S. Employer Identification Number)



                        ONE POST OAK CENTRAL, SUITE 100
                            2000 POST OAK BOULEVARD
                           HOUSTON, TEXAS  77056-4400
                    (Address of Principal Executive Offices)

      Registrant's telephone number, including area code:  (713) 296-6000
<PAGE>   2


ITEM 5.  OTHER EVENTS

       On October 31, 1996, Apache Corporation ("Apache") amended and restated
its main revolving bank credit facility to provide for a new global credit
facility (the "Global Credit Facility"), which consists of several principal
agreements.  Apache entered into a Fourth Amended and Restated Credit Agreement
(which is listed under Item 7 as Exhibit 10.1 and incorporated herein by
reference) with a credit commitment, subject to borrowing base availability, of
$750 million among Apache, The First National Bank of Chicago, as Global
Administrative Agent, The Chase Manhattan Bank, as Co-Agent, First Chicago
Capital Markets, Inc., as Arranger, Chase Securities Inc., as Arranger, and the
U.S. Lenders party thereto.  Apache Canada Ltd. ("Apache Canada"), a
wholly-owned subsidiary of Apache, entered into a Credit Agreement (which is
listed under Item 7 as Exhibit 10.2 and incorporated herein by reference) with
a credit commitment, subject to borrowing base availability, of $125 million
among Apache Canada, Bank of Montreal, as Canadian Administrative Agent, The
First National Bank of Chicago, as Global Administrative Agent, First Chicago
Capital Markets, Inc., as Arranger, Chase Securities Inc., as Arranger, and the
Canadian Lenders party thereto.  Apache Energy Limited ("AEL") and Apache Oil
Australia Pty. Limited ("Apache Oil Australia"), wholly-owned subsidiaries of
Apache, entered into a Credit Agreement (which is listed under Item 7 as
Exhibit 10.3 and incorporated herein by reference) with a credit commitment,
subject to borrowing base availability, of $125 million among AEL, Apache Oil
Australia, Chase Securities Australia Limited, as Australian Administrative
Agent, The First National Bank of Chicago, as Global Administrative Agent,
First Chicago Capital Markets, Inc., as Arranger, Chase Securities Inc., as
Arranger, and the Australian Lenders party thereto.  In addition, Apache,
Apache Canada, and AEL and Apache Oil Australia entered into Indemnity
Agreements with the lenders named therein, which Indemnity Agreements are
listed under Item 7 as Exhibits 10.4, 10.5, and 10.6, respectively, and
incorporated herein by reference.

       The Global Credit Facility adds Apache's oil and gas reserve values in
Canada and Australia to those in the United States in determining Apache's
global borrowing base.  Certain covenants and restrictions contained in the
previous credit agreement have been eliminated, and certain interest rates have
been reduced.  As of October 31, 1996, the global borrowing base for Apache
and its subsidiaries under the Global Credit Facility was $947 million, of
which borrowing base debt was approximately $745 million, leaving 
approximately $202 million available for additional borrowings. 

       In addition, on October 25, 1996, Apache announced a purchase/sale
program for odd-lot shareholders.  Apache's press release relating to the
odd-lot program is listed under Item 7 as Exhibit 99.1 and is incorporated
herein by reference.





                                       2
<PAGE>   3

ITEM 7.  FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS


       EXHIBITS

       10.1*         Fourth Amended and Restated Credit Agreement, dated
                     October 31, 1996, among the Registrant, the lenders named
                     therein, and The First National Bank of Chicago, as Global
                     Administrative Agent, The Chase Manhattan Bank, as
                     Co-Agent, First Chicago Capital Markets, Inc., as
                     Arranger, and Chase Securities Inc., as Arranger.

       10.2*         Credit Agreement, dated October 31, 1996, among Apache
                     Canada Ltd., a wholly-owned subsidiary of the Registrant,
                     the lenders named therein, and Bank of Montreal, as
                     Canadian Administrative Agent, The First National Bank of
                     Chicago, as Global Administrative Agent, First Chicago
                     Capital Markets, Inc., as Arranger, and Chase Securities
                     Inc., as Arranger.

       10.3*         Credit Agreement, dated October 31, 1996, among Apache
                     Energy Limited and Apache Oil Australia Pty. Limited,
                     wholly-owned subsidiaries of the Registrant, the lenders
                     named therein, and Chase Securities Australia Limited, as
                     Australian Administrative Agent, The First National Bank
                     of Chicago, as Global Administrative Agent, First Chicago
                     Capital Markets, Inc., as Arranger, and Chase Securities
                     Inc., as Arranger.

       10.4*         Indemnity Agreement, dated October 31, 1996, among the
                     Registrant and the lenders named therein (together with
                     the form of Intercreditor Agreement among lenders attached 
                     as an exhibit thereto).

       10.5*         Indemnity Agreement, dated October 31, 1996, among Apache
                     Energy Limited and Apache Oil Australia Pty. Limited,
                     subsidiaries of the Registrant, and the lenders named
                     therein (but excluding the form of Intercreditor Agreement
                     among lenders attached as an exhibit thereto, which
                     Intercreditor Agreement is filed under Exhibit 10.4 
                     hereto).

       10.6*         Indemnity Agreement, dated October 31, 1996, among Apache
                     Canada Ltd., subsidiaries of the Registrant, and the
                     lenders named therein (but excluding the form of 
                     Intercreditor Agreement among lenders attached as an 
                     exhibit thereto, which Intercreditor Agreement is 
                     filed under Exhibit 10.4 hereto).

       99.1*         Press release, dated October 24, 1996, "Apache Offers
                     Program for Odd-Lot Shareholders." 

- ---------------
*      Filed herewith.





                                       3

<PAGE>   4
                                   SIGNATURES

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



                                   APACHE CORPORATION



Date:  October 31, 1996            By:     /s/ Z. S. Kobiashvili         
                                      ---------------------------------------
                                   Name:   Z. S. Kobiashvili
                                   Title:  Vice President and General Counsel





                                       4
<PAGE>   5
                                 EXHIBIT INDEX


<TABLE>
<CAPTION>
       EXHIBITS
       --------
       <S>           <C>
       10.1*         Fourth Amended and Restated Credit Agreement, dated
                     October 31, 1996, among the Registrant, the lenders named
                     therein, and The First National Bank of Chicago, as Global
                     Administrative Agent, The Chase Manhattan Bank, as
                     Co-Agent, First Chicago Capital Markets, Inc., as
                     Arranger, and Chase Securities Inc., as Arranger.

       10.2*         Credit Agreement, dated October 31, 1996, among Apache
                     Canada Ltd., a wholly-owned subsidiary of the Registrant,
                     the lenders named therein, and Bank of Montreal, as
                     Canadian Administrative Agent, The First National Bank of
                     Chicago, as Global Administrative Agent, First Chicago
                     Capital Markets, Inc., as Arranger, and Chase Securities
                     Inc., as Arranger.

       10.3*         Credit Agreement, dated October 31, 1996, among Apache
                     Energy Limited and Apache Oil Australia Pty. Limited,
                     wholly-owned subsidiaries of the Registrant, the lenders
                     named therein, and Chase Securities Australia Limited, as
                     Australian Administrative Agent, The First National Bank
                     of Chicago, as Global Administrative Agent, First Chicago
                     Capital Markets, Inc., as Arranger, and Chase Securities
                     Inc., as Arranger.

       10.4*         Indemnity Agreement, dated October 31, 1996, among the
                     Registrant and the lenders named therein (together with
                     the form of Intercreditor Agreement among lenders attached 
                     as an exhibit thereto).

       10.5*         Indemnity Agreement, dated October 31, 1996, among Apache
                     Energy Limited and Apache Oil Australia Pty. Limited,
                     subsidiaries of the Registrant, and the lenders named
                     therein (but excluding the form of Intercreditor Agreement
                     among lenders attached as an exhibit thereto, which 
                     Intercreditor Agreement is filed under Exhibit 10.4 
                     hereto).

       10.6*         Indemnity Agreement, dated October 31, 1996, among Apache
                     Canada Ltd., subsidiaries of the Registrant, and the
                     lenders named therein (but excluding the form of 
                     Intercreditor Agreement among lenders attached as an 
                     exhibit thereto, which Intercreditor Agreement is 
                     filed under Exhibit 10.4 hereto).

       99.1*         Press release, dated October 24, 1996, "Apache Offers
                     Program for Odd-Lot Shareholders." 
</TABLE>

- ---------------
*      Filed herewith.





                                       5





<PAGE>   1
                                                                    EXHIBIT 10.1


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



                  FOURTH AMENDED AND RESTATED CREDIT AGREEMENT

                          dated as of October 31, 1996

                                     among

                              APACHE CORPORATION,

                                      and

                         THE U.S. LENDERS NAMED HEREIN,

                                      and

                      THE FIRST NATIONAL BANK OF CHICAGO,
                        as Global Administrative Agent,

                                      and

                           THE CHASE MANHATTAN BANK,
                                  as Co-Agent,

                                      and

                      FIRST CHICAGO CAPITAL MARKETS, INC.,
                                  as Arranger,

                                      and

                             CHASE SECURITIES INC.,
                                  as Arranger


================================================================================
<PAGE>   2
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                            PAGE
<S>                                                                           <C>
RECITALS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1

ARTICLE I     DEFINITIONS AND TERMS OF CONSTRUCTION   . . . . . . . . . . .    2
       1.1.   Definitions   . . . . . . . . . . . . . . . . . . . . . . . .    2
       1.2.   Use of Defined Terms  . . . . . . . . . . . . . . . . . . . .   20
       1.3.   Cross References  . . . . . . . . . . . . . . . . . . . . . .   20
       1.4.   Accounting and Financial Determination  . . . . . . . . . . .   20
       1.5.   Currency References   . . . . . . . . . . . . . . . . . . . .   20

ARTICLE II    THE FACILITY  . . . . . . . . . . . . . . . . . . . . . . . .   20
       2.1.   The Facility  . . . . . . . . . . . . . . . . . . . . . . . .   20
              (a)    Description of Facility  . . . . . . . . . . . . . . .   20
              (b)    Facility Amount  . . . . . . . . . . . . . . . . . . .   21
              (c)    All Loans  . . . . . . . . . . . . . . . . . . . . . .   21
              (d)    Revolving Advances   . . . . . . . . . . . . . . . . .   21
              (e)    Competitive Bid Loans  . . . . . . . . . . . . . . . .   21
       2.2.   Extension of Termination Date and of Aggregate Commitment   .   22
       2.3.   Global Borrowing Base   . . . . . . . . . . . . . . . . . . .   23
              (a)    Initial Global Borrowing Base; Scheduled Semi-
                     Annual and Discretionary Determinations of the
                     Global Borrowing Base; Procedures for Determination
                     of the Global Borrowing Base   . . . . . . . . . . . .   23
              (b)    Determination of Global Borrowing Base at Request
                     of Company   . . . . . . . . . . . . . . . . . . . . .   24
              (c)    Criteria for Determination of the Global Borrowing
                     Base   . . . . . . . . . . . . . . . . . . . . . . . .   24
              (d)    Redeterminations of Global Borrowing Base Upon
                     Material Adverse Effect  . . . . . . . . . . . . . . .   24
              (e)    Redetermination of Global Borrowing Base Upon
                     Material Changes   . . . . . . . . . . . . . . . . . .   24
              (f)    Reduction of Global Borrowing Base Upon Sales of
                     Certain Properties   . . . . . . . . . . . . . . . . .   25
              (g)    Title Warranty   . . . . . . . . . . . . . . . . . . .   25
       2.4.   Facility Fee; Other Fees  . . . . . . . . . . . . . . . . . .   25
              (a)    Facility Fee   . . . . . . . . . . . . . . . . . . . .   25
              (b)    Agents' Fees   . . . . . . . . . . . . . . . . . . . .   26

ARTICLE III   BORROWING; SELECTING RATE OPTIONS; ETC.   . . . . . . . . . .   26
       3.1.   Method of Borrowing   . . . . . . . . . . . . . . . . . . . .   26
              (a)    Revolving Loans  . . . . . . . . . . . . . . . . . . .   26
              (b)    Competitive Bid Loans  . . . . . . . . . . . . . . . .   26
       3.2.   Maximum Interest  . . . . . . . . . . . . . . . . . . . . . .   26
       3.3.   Method of Selecting Rate Options and Interest Periods for
              Revolving Loans   . . . . . . . . . . . . . . . . . . . . . .   27
       3.4.   Competitive Bid Loans   . . . . . . . . . . . . . . . . . . .   28
              (a)    Competitive Bid Quote Request  . . . . . . . . . . . .   28
              (b)    Invitation for Competitive Bid Quotes  . . . . . . . .   28
              (c)    Submission and Contents of Competitive Bid Quotes  . .   28
              (d)    Notice to Company  . . . . . . . . . . . . . . . . . .   29
              (e)    Acceptance and Notice by Company   . . . . . . . . . .   30
              (f)    Allocation by Global Administrative Agent  . . . . . .   30
       3.5.   Minimum Amount of Each Advance  . . . . . . . . . . . . . . .   30
       3.6.   Continuation and Conversion Elections   . . . . . . . . . . .   30
       3.7.   Telephonic Notices  . . . . . . . . . . . . . . . . . . . . .   31
</TABLE>





                                       i
<PAGE>   3
                               TABLE OF CONTENTS
                                  (CONTINUED)
<TABLE>
<CAPTION>
                                                                            PAGE
<S>                                                                           <C>
       3.8.   Rate after Maturity   . . . . . . . . . . . . . . . . . . . .   31
       3.9.   Interest Payment Dates; Determination of Interest and Fees  .   31
              (a)    Interest Payment Dates   . . . . . . . . . . . . . . .   31
              (b)    Determination of Interest and Fees   . . . . . . . . .   31
       3.10.  Notification of Advances, Interest Rates, Prepayments and
              Commitment Reductions   . . . . . . . . . . . . . . . . . . .   32
       3.11.  Non-Receipt of Funds by the Global Administrative Agent   . .   32

ARTICLE IV    MANDATORY PAYMENTS; REDUCTIONS OF COMMITMENTS; ETC.   . . . .   32
       4.1.   Mandatory Prepayments   . . . . . . . . . . . . . . . . . . .   32
              (a)    Mandatory Prepayments  . . . . . . . . . . . . . . . .   32
              (b)    Application of Mandatory Prepayments   . . . . . . . .   33
       4.2.   Voluntary Prepayments   . . . . . . . . . . . . . . . . . . .   33
       4.3.   Method of Payment   . . . . . . . . . . . . . . . . . . . . .   33
       4.4.   Notes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   34
       4.5.   Voluntary Reductions of Commitments.    . . . . . . . . . . .   34
       4.6.   Voluntary and Mandatory Prepayments   . . . . . . . . . . . .   34

ARTICLE V     [Intentionally Omitted.]  . . . . . . . . . . . . . . . . . .   34

ARTICLE VI    CHANGE IN CIRCUMSTANCES; TAXES  . . . . . . . . . . . . . . .   34
       6.1.   Yield Protection  . . . . . . . . . . . . . . . . . . . . . .   34
       6.2.   Availability of Rate Options  . . . . . . . . . . . . . . . .   35
       6.3.   Funding Indemnification   . . . . . . . . . . . . . . . . . .   35
       6.4.   Lending Installations   . . . . . . . . . . . . . . . . . . .   35
       6.5.   Increased Capital Costs   . . . . . . . . . . . . . . . . . .   35
       6.6.   Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   35
       6.7.   U.S. Lender Statements; Survival of Indemnity;
              Substitution of U.S. Lenders; Limitation on Claims by U.S.
              Lenders   . . . . . . . . . . . . . . . . . . . . . . . . . .   36
       6.8.   Withholding Tax Exemption   . . . . . . . . . . . . . . . . .   37
       6.9.   Currency Conversion and Currency Indemnity  . . . . . . . . .   37
              (a)    Payments in Agreed Currency.   . . . . . . . . . . . .   37
              (b)    Conversion of Agreed Currency into Judgment
                     Currency.  . . . . . . . . . . . . . . . . . . . . . .   37
              (c)    Circumstances Giving Rise to Indemnity.  . . . . . . .   38
              (d)    Indemnity Separate Obligation.   . . . . . . . . . . .   38

ARTICLE VII   CONDITIONS PRECEDENT  . . . . . . . . . . . . . . . . . . . .   38
       7.1.   Conditions of Effectiveness   . . . . . . . . . . . . . . . .   38
       7.2.   Each Advance  . . . . . . . . . . . . . . . . . . . . . . . .   39

ARTICLE VIII  REPRESENTATIONS AND WARRANTIES  . . . . . . . . . . . . . . .   40
       8.1.   Corporate Existence and Standing  . . . . . . . . . . . . . .   40
       8.2.   Authorization and Validity  . . . . . . . . . . . . . . . . .   40
       8.3.   No Conflict; Government Consent   . . . . . . . . . . . . . .   40
       8.4.   Financial Statements  . . . . . . . . . . . . . . . . . . . .   40
       8.5.   Material Adverse Change   . . . . . . . . . . . . . . . . . .   41
       8.6.   Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   41
</TABLE>





                                       ii
<PAGE>   4
                               TABLE OF CONTENTS
                                  (CONTINUED)
<TABLE>
<CAPTION>
                                                                            PAGE
<S>                                                                           <C>
       8.7.   Litigation and Guaranteed Obligations   . . . . . . . . . . .   41
       8.8.   Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . .   41
       8.9.   ERISA   . . . . . . . . . . . . . . . . . . . . . . . . . . .   41
       8.10.  Accuracy of Information   . . . . . . . . . . . . . . . . . .   41
       8.11.  Regulation-U  . . . . . . . . . . . . . . . . . . . . . . . .   41
       8.12.  Material Agreements   . . . . . . . . . . . . . . . . . . . .   41
       8.13.  Compliance With Laws  . . . . . . . . . . . . . . . . . . . .   41
       8.14.  Title to Properties   . . . . . . . . . . . . . . . . . . . .   42
       8.15.  Investment Company Act  . . . . . . . . . . . . . . . . . . .   42
       8.16.  Public Utility Holding Company Act  . . . . . . . . . . . . .   42
       8.17.  Post-Retirement Benefits  . . . . . . . . . . . . . . . . . .   42
       8.18.  Solvency  . . . . . . . . . . . . . . . . . . . . . . . . . .   42
       8.19.  Environmental Warranties  . . . . . . . . . . . . . . . . . .   42

ARTICLE IX    AFFIRMATIVE COVENANTS   . . . . . . . . . . . . . . . . . . .   43
       9.1.   Financial Reporting   . . . . . . . . . . . . . . . . . . . .   43
       9.2.   Use of Proceeds   . . . . . . . . . . . . . . . . . . . . . .   45
       9.3.   Notice of Default, Unmatured Default, Litigation and
              Material Adverse Effect   . . . . . . . . . . . . . . . . . .   45
       9.4.   Conduct of Business   . . . . . . . . . . . . . . . . . . . .   45
       9.5.   Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   45
       9.6.   Insurance   . . . . . . . . . . . . . . . . . . . . . . . . .   45
       9.7.   Compliance with Laws  . . . . . . . . . . . . . . . . . . . .   45
       9.8.   Maintenance of Properties   . . . . . . . . . . . . . . . . .   45
       9.9.   Inspection  . . . . . . . . . . . . . . . . . . . . . . . . .   45
       9.10.  Operation of Properties   . . . . . . . . . . . . . . . . . .   46
       9.11.  Delivery of Guaranties  . . . . . . . . . . . . . . . . . . .   46
       9.12.  Environmental Covenant  . . . . . . . . . . . . . . . . . . .   46
       9.13.  Further Assurances  . . . . . . . . . . . . . . . . . . . . .   46

ARTICLE X     FINANCIAL COVENANTS   . . . . . . . . . . . . . . . . . . . .   46
       10.1.  Consolidated Tangible Net Worth   . . . . . . . . . . . . . .   46
       10.2.  Ratio of EBITDDA to Consolidated Interest   . . . . . . . . .   47

ARTICLE XI    NEGATIVE COVENANTS  . . . . . . . . . . . . . . . . . . . . .   47
       11.1.  Indebtedness  . . . . . . . . . . . . . . . . . . . . . . . .   47
       11.2.  Merger  . . . . . . . . . . . . . . . . . . . . . . . . . . .   47
       11.3.  Sales of Properties or Borrowing Base Subsidiaries  . . . . .   48
       11.4.  Guaranteed Obligations  . . . . . . . . . . . . . . . . . . .   49
       11.5.  Liens   . . . . . . . . . . . . . . . . . . . . . . . . . . .   49
       11.6.  Restricted Payments, etc  . . . . . . . . . . . . . . . . . .   50
       11.7.  Transactions with Affiliates  . . . . . . . . . . . . . . . .   50
       11.8.  Negative Pledges, etc   . . . . . . . . . . . . . . . . . . .   51
       11.9.  Regulation U Acquisitions   . . . . . . . . . . . . . . . . .   51
       11.10. Investments   . . . . . . . . . . . . . . . . . . . . . . . .   51
       11.11. Hedging Contracts   . . . . . . . . . . . . . . . . . . . . .   52
       11.12. Approval of Consents  . . . . . . . . . . . . . . . . . . . .   52
</TABLE>





                                      iii
<PAGE>   5
                               TABLE OF CONTENTS
                                  (CONTINUED)
<TABLE>
<CAPTION>
                                                                            PAGE
<S>                                                                           <C>
ARTICLE XII   DEFAULTS  . . . . . . . . . . . . . . . . . . . . . . . . . .   52
       12.1.  Breach of Warranties and Misleading Statements  . . . . . . .   52
       12.2.  Nonpayment of Notes, Fees and other Obligations   . . . . . .   52
       12.3.  Breach of Certain Covenants   . . . . . . . . . . . . . . . .   52
       12.4.  Default Under Australian Loan Documents or Canadian Loan
              Documents.  . . . . . . . . . . . . . . . . . . . . . . . . .   53
       12.5.  Non-Compliance with this Agreement  . . . . . . . . . . . . .   53
       12.6.  Cross-Defaults  . . . . . . . . . . . . . . . . . . . . . . .   53
       12.7.  Voluntary Dissolution and Insolvency Proceedings and
              Actions   . . . . . . . . . . . . . . . . . . . . . . . . . .   53
       12.8.  Involuntary Insolvency Proceedings or Dissolution   . . . . .   53
       12.9.  Condemnation  . . . . . . . . . . . . . . . . . . . . . . . .   53
       12.10. Judgments   . . . . . . . . . . . . . . . . . . . . . . . . .   53
       12.11. Plans   . . . . . . . . . . . . . . . . . . . . . . . . . . .   54
       12.12. Other Defaults Under U.S. Loan Documents  . . . . . . . . . .   54
       12.13. Failure of U.S. Loan Documents  . . . . . . . . . . . . . . .   54
       12.14. Change in Control   . . . . . . . . . . . . . . . . . . . . .   54

ARTICLE XIII  ACCELERATION, WAIVERS, AMENDMENTS, REMEDIES; RELEASES   . . .   54
       13.1.  Acceleration  . . . . . . . . . . . . . . . . . . . . . . . .   54
       13.2.  Amendments  . . . . . . . . . . . . . . . . . . . . . . . . .   54
       13.3.  Preservation of Rights  . . . . . . . . . . . . . . . . . . .   55

ARTICLE XIV   GENERAL PROVISIONS  . . . . . . . . . . . . . . . . . . . . .   55
       14.1.  Survival of Representations   . . . . . . . . . . . . . . . .   55
       14.2.  Governmental Regulation   . . . . . . . . . . . . . . . . . .   55
       14.3.  Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   55
       14.4.  Headings  . . . . . . . . . . . . . . . . . . . . . . . . . .   55
       14.5.  Entire Agreement  . . . . . . . . . . . . . . . . . . . . . .   55
       14.6.  Several Obligations   . . . . . . . . . . . . . . . . . . . .   55
       14.7.  Reimbursement of Costs and Expenses; Indemnification  . . . .   56
              (a)    Reimbursement of Costs and Expenses  . . . . . . . . .   56
              (b)    Indemnification  . . . . . . . . . . . . . . . . . . .   56
       14.8.  Numbers of Documents  . . . . . . . . . . . . . . . . . . . .   57
       14.9.  Severability of Provisions  . . . . . . . . . . . . . . . . .   57
       14.10. Nonliability of U.S. Lenders  . . . . . . . . . . . . . . . .   57
       14.11. CHOICE OF LAW   . . . . . . . . . . . . . . . . . . . . . . .   57
       14.12. CONSENT TO JURISDICTION   . . . . . . . . . . . . . . . . . .   57
       14.13. Confidentiality   . . . . . . . . . . . . . . . . . . . . . .   58

ARTICLE XV    THE AGENTS, THE ARRANGERS AND THE ENGINEERING BANKS   . . . .   58
       15.1.  Appointment of Agents   . . . . . . . . . . . . . . . . . . .   58
       15.2.  Powers  . . . . . . . . . . . . . . . . . . . . . . . . . . .   58
       15.3.  General Immunity  . . . . . . . . . . . . . . . . . . . . . .   58
       15.4.  No Responsibility for Loans, Recitals, etc  . . . . . . . . .   58
       15.5.  Action on Instructions of U.S. Lenders  . . . . . . . . . . .   58
       15.6.  Employment of Agents and Counsel  . . . . . . . . . . . . . .   58
       15.7.  Reliance on Documents; Counsel  . . . . . . . . . . . . . . .   59
       15.8.  Reimbursement and Indemnification   . . . . . . . . . . . . .   59
</TABLE>





                                       iv
<PAGE>   6
                               TABLE OF CONTENTS
                                  (CONTINUED)
<TABLE>
<CAPTION>
                                                                            PAGE
<S>                                                                           <C>
       15.9.  Rights as a U.S. Lender   . . . . . . . . . . . . . . . . . .   59
       15.10. U.S. Lender Credit Decision   . . . . . . . . . . . . . . . .   59
       15.11. Certain Successor Agents  . . . . . . . . . . . . . . . . . .   59

ARTICLE XVI   SETOFF; RATABLE PAYMENTS  . . . . . . . . . . . . . . . . . .   60
       16.1.  Setoff  . . . . . . . . . . . . . . . . . . . . . . . . . . .   60
       16.2.  Ratable Payments  . . . . . . . . . . . . . . . . . . . . . .   60

ARTICLE XVII  BENEFIT OF AGREEMENT; ASSIGNMENTS; PARTICIPATIONS   . . . . .   60
       17.1.  Successors and Assigns  . . . . . . . . . . . . . . . . . . .   60
       17.2.  Participations  . . . . . . . . . . . . . . . . . . . . . . .   60
       17.3.  Assignments   . . . . . . . . . . . . . . . . . . . . . . . .   61
       17.4.  Dissemination of Information  . . . . . . . . . . . . . . . .   62
       17.5.  Tax Treatment   . . . . . . . . . . . . . . . . . . . . . . .   62

ARTICLE XVIII NOTICES   . . . . . . . . . . . . . . . . . . . . . . . . . .   62
       18.1.  Giving Notice   . . . . . . . . . . . . . . . . . . . . . . .   62
       18.2.  Change of Address   . . . . . . . . . . . . . . . . . . . . .   62

ARTICLE XIX   COUNTERPARTS  . . . . . . . . . . . . . . . . . . . . . . . .   62

ARTICLE XX    NO ORAL AGREEMENTS  . . . . . . . . . . . . . . . . . . . . .   62


EXHIBITS:
- -------- 

EXHIBIT A-1     REVOLVING NOTE
EXHIBIT A-2     COMPETITIVE BID NOTE
EXHIBIT B       FORM OF LEGAL OPINION
EXHIBIT C       APACHE CORPORATION COMPLIANCE CERTIFICATE
EXHIBIT D       ASSIGNMENT AGREEMENT
EXHIBIT E       COMPETITIVE BID QUOTE REQUEST
EXHIBIT F       CONTINUATION/CONVERSION NOTICE
EXHIBIT G       MAYER, BROWN & PLATT OPINION
EXHIBIT H       INVITATION FOR COMPETITIVE BID QUOTES
EXHIBIT I       CONSENT, ACKNOWLEDGEMENT AND AGREEMENT
EXHIBIT J       CONFIDENTIALITY AGREEMENT
EXHIBIT K       COMPETITIVE BID QUOTE
EXHIBIT L       FORM OF GUARANTY

SCHEDULES:
- --------- 

SCHEDULE A      EURODOLLAR SPREAD, FACILITY FEE RATES
SCHEDULE 8.8    SUBSIDIARIES; BORROWING BASE SUBSIDIARIES
SCHEDULE 11.1   INDEBTEDNESS; LIENS
SCHEDULE 11.10  INVESTMENTS
</TABLE>





                                       v
<PAGE>   7
                  FOURTH AMENDED AND RESTATED CREDIT AGREEMENT

       This Fourth Amended and Restated Credit Agreement, dated as of October
31, 1996, is among Apache Corporation, a Delaware corporation (the "Company"),
the various commercial lending institutions as are or may become parties hereto
(the "U.S. Lenders"), The First National Bank of Chicago, as Global
Administrative Agent (the "Global Administrative Agent"), The Chase Manhattan
Bank, as Co-Agent (the "Co-Agent"), First Chicago Capital Markets, Inc., as
Arranger, and Chase Securities Inc., as Arranger.

                                   RECITALS:

       1.     The Company, the U.S. Lenders, The First National Bank of Chicago
as Administrative Agent and as Collateral Agent, and Chemical Bank, as Co-Agent
have heretofore entered into that certain Reducing Revolving Credit and Term
Loan Agreement, dated as of July 1, 1991, that certain Amendment No. 1, dated
as of November 1, 1991 and that certain Amendment No. 2, dated as of December
1, 1991 (as so amended, the "July 1991 Agreement"), pursuant to which the U.S.
Lenders agreed to make Term Loans and Revolving Loans (each as defined in the
July 1991 Agreement and herein called, respectively, the "1991 Term Loans" and
the "1991 Revolving Loans").

       2.     In order to restructure the indebtedness incurred by the Company
to the U.S. Lenders pursuant to the July 1991 Agreement, the Company, the U.S.
Lenders, the Administrative Agent and the Collateral Agent and the Co-Agent
entered into that certain Amended and Restated Credit Agreement, dated as of
April 15, 1992, a first amendment thereto, dated July 21, 1992, a second
amendment thereto dated December 31, 1992, the Third Amendment to Amended and
Restated Credit Agreement, dated as of April 30, 1993, and the Fourth Amendment
to Amended and Restated Credit Agreement, dated as of July 13, 1993 (as so
amended, the "April 1992 Agreement"), pursuant to which the U.S. Lenders agreed
to make Revolving Loans (as defined in the April 1992 Agreement and herein
called "1992 Revolving Loans").

       3.     In order to restructure the indebtedness incurred by the Company
to the U.S. Lenders pursuant to the July 1991 Agreement, as renewed, restated,
extended and converted into 1992 Revolving Loans pursuant to the April 1992
Agreement, the Company, the U.S. Lenders, the Administrative Agent and the
Collateral Agent and the Co-Agent entered into that certain Second Amended and
Restated Credit Agreement, dated as of April 30, 1994 (the "April 1994
Agreement"), pursuant to which the U.S. Lenders agreed to make Loans (as
defined in the April 1994 Agreement and herein called "1994 Loans").

       4.     In order to restructure the indebtedness incurred by the Company
to the U.S. Lenders pursuant to the July 1991 Agreement, as renewed, restated,
extended and converted into 1992 Revolving Loans pursuant to the April 1992
Agreement and as further renewed, restated, extended and converted into 1994
Loans pursuant to the April 1994 Agreement, the Company, the U.S. Lenders, the
Administrative Agent and the Co-Agent entered into that certain Third Amended
and Restated Credit Agreement, dated as of March 1, 1995, a First Amendment to
Third Amended and Restated Credit Agreement, dated as of April 14, 1995, a
Second Amendment to Third Amended and Restated Credit Agreement, dated as of
October 23, 1995, a Third Amendment to Third Amended and Restated Credit
Agreement, dated as of December 18, 1995, a Fourth Amendment to Third Amended
and Restated Credit Agreement, dated as of December 22, 1995, a Fifth Amendment
to Third Amended and Restated Credit Agreement, dated as of January 22, 1996, a
Sixth Amendment to Third Amended and Restated Credit Agreement, dated as of
April 18, 1996, and a Seventh Amendment to Third Amended and Restated Credit
Agreement, dated as of April 30, 1996 (as so amended, the "March 1995
Agreement"), pursuant to which the U.S. Lenders agreed to make Loans (as
defined in the March 1995 Agreement and herein called "1995 Loans").

       5.     On the terms and subject to the conditions of this Agreement, all
1995 Loans of the U.S. Lenders to the Company outstanding on the Global
Effective Date (as hereinafter defined) shall, on the Global
<PAGE>   8
Effective Date, be renewed, restated, extended and converted into (but shall
not be deemed to be repaid) Revolving Loans under this Agreement.

       6.     The Company, the U.S. Lenders, the Administrative Agent, the Co-
Agent and the Arrangers hereby amend the March 1995 Agreement and restate the
March 1995 Agreement in its entirety as follows:


                                   ARTICLE I

                     DEFINITIONS AND TERMS OF CONSTRUCTION

       1.1.   Definitions.  The following terms (whether or not underscored)
when used in this Agreement, including its preamble and recitals, shall, except
where the context otherwise requires, have the following meanings (such
meanings to be equally applicable to the singular and the plural forms
thereof):

       "Accepting Lender" is defined in Section 2.2.

       "Acknowledgment of Guaranty" means a Consent, Acknowledgment and
Agreement, substantially in the form of Exhibit I hereto, dated the Global
Effective Date, duly executed and delivered to the Global Administrative Agent
by MW Petroleum.

       "Acquisition" means any transaction, or any series of related
transactions, consummated after the date of this Agreement, by which the
Company or any of the Subsidiaries (i) acquires any going business or all or
substantially all of the assets of any Person or division thereof, whether
through purchase of assets, merger or otherwise or (ii) directly or indirectly
acquires (in one transaction or as the most recent transaction in a series of
transactions) at least a majority (in number of votes) of the securities of a
corporation which have ordinary voting power for the election of directors
(other than securities having such power only by reason of the happening of a
contingency).

       "Advance" means a borrowing hereunder consisting of the aggregate amount
of the several Loans made by the U.S. Lenders or any of them to the Company on
the same Borrowing Date, at the same Rate Option (or on the same interest basis
in the case of a Competitive Bid Loan) and, in the case of Eurodollar Loans,
for the same Interest Period, which results in an increase in the aggregate
amount of outstanding Loans under this Agreement.

       "Affiliate" of any Person means any Person directly or indirectly
controlling, controlled by or under direct or indirect common control of such
Person; provided, however, notwithstanding the foregoing, the definition of
"Affiliate" shall not include any Subsidiary of the Company.  A Person shall be
deemed to control another Person if the controlling Person owns directly or
indirectly 20% or more of any class of voting securities of the controlled
Person or possesses, directly or indirectly, the power to direct or cause the
direction of the management or policies of the controlled Person, whether
through ownership of stock, by contract or otherwise.

       "Agents" means each of the Global Administrative Agent, the Arrangers,
the Co-Agent and the Engineering Banks.

       "Aggregate Commitment" means, as of the time a determination thereof is
to be made, the sum of the Commitments of all the U.S. Lenders hereunder, being
$750,000,000 as of the date hereof, and as reduced from time to time after the
date hereof pursuant to Sections 4.5 and 13.1.

       "Agreed Currency" is defined in Section 6.9(a).

       "Agreement" means this Fourth Amended and Restated Credit Agreement, as
it may be amended, supplemented, restated or otherwise modified and in effect
from time to time.





                                       2
<PAGE>   9
       "Agreement Accounting Principles" means, on any date, those generally
accepted accounting principles applied in preparing the financial statements
referred to in Section 8.4.

       "Alternate Base Rate" means, on any date and with respect to all
Floating Rate Advances, a fluctuating rate of interest per annum equal to the
higher of (i) the Corporate Base Rate, and (ii) the Federal Funds Effective
Rate most recently determined by the Global Administrative Agent plus 1/2%.
Changes in the rate of interest on that portion of any Advance maintained as a
Floating Rate Advance will take effect simultaneously with each change in the
Alternate Base Rate.  The Global Administrative Agent will give notice promptly
to the Company and the U.S. Lenders of changes in the Alternate Base Rate.

       "Anniversary Date" means any October 31, with the first such date being
October 31, 1997.

       "Annual Certificate of Extension" means a certificate of the Company,
executed by an Authorized Officer and delivered to the Global Administrative
Agent, which requests an extension of the then scheduled Termination Date
pursuant to Section 2.2.

       "Apache Canada" means Apache Canada Ltd., a corporation organized under
the laws of the Province of Alberta, Canada.

       "Apache Egypt" means Apache Oil Egypt, Inc., a Delaware corporation, and
Apache Qarun Corporation LDC, a Cayman Islands company formed under the
Companies Law of the Cayman Islands, British West Indies, and any successor
entity which is, directly or indirectly, at least a ninety-five percent-owned
(95%-owned) subsidiary of the Company arising through the merger or liquidation
of one such corporation into the other such corporation.

       "Apache Energy Limited" means Apache Energy Limited (ACN 009 301 964), a
corporation organized under the laws of the State of Western Australia,
Australia.

       "Apache Oil Australia" means Apache Oil Australia Pty. Limited (ACN 050
611 688), a corporation organized under the laws of the State of New South
Wales, Australia.

       "Approved Engineers" means Ryder Scott Company Petroleum Engineers or
Netherland, Sewell & Associates, Inc. or other independent petroleum engineers
of recognized standing and experience in the evaluation of hydrocarbon reserves
who each of the Engineering Banks and the Required Lenders determine to be
acceptable.

       "Approved Engineers' Report" means a report prepared (except to the
extent set forth below) and certified by the Approved Engineers and furnished
by the Company to the Global Administrative Agent and U.S. Lenders pursuant to
Section 9.1(d) or (e) which shall set forth (i) the estimated volume and rate
of production of Hydrocarbons which may reasonably be expected to be produced
from Proved Reserves for each Property, (ii) a computation of the projected
gross revenues from Proved Reserves attributable to each Property, (iii) a
computation of the future net revenues for each Property, showing separately
net revenues from Proved Developed Producing Reserves, Proved Developed Non-
Producing Reserves and Proved Undeveloped Reserves, and (iv) projections as to
the amount of Proved Reserves for each Property, showing separately Proved
Developed Producing Reserves, Proved Developed Non-Producing Reserves and
Proved Undeveloped Reserves.  The Approved Engineers' Report shall be prepared
using economic parameters (including pricing, inflation and discount rate)
provided by the Engineering Banks and in accordance with established criteria
generally accepted in the oil and gas industry for use by independent petroleum
engineers in making determinations and appraisals of hydrocarbon reserves,
including assumptions, estimates and projections as to production expenses,
availability of reserves and rates of production; provided, however, that in
preparing such report, the Approved Engineers need only make an independent
evaluation of Properties comprising not less than (x) 70% in value of the
Properties included in the most recent Approved Engineers' Report and (y) 80%
in value of any Properties not included in the most recent Approved Engineers'
Report, and may review the evaluation by the Company's petroleum engineers in
accordance with the





                                       3
<PAGE>   10
foregoing criteria of the remainder of the Properties.  The Engineering Banks
may, in their sole discretion after consulting with the Company, require
modification of any assumption, projection or estimate which they (acting
reasonably) find unacceptable.

       "April 1992 Agreement" is defined in Recital 2.

       "April 1994 Agreement" is defined in Recital 3.

       "Arranger" means each of First Chicago Capital Markets, Inc. and Chase
Securities Inc. in their respective capacities as arrangers pursuant to Article
XV.

       "Assignment Agreement" means an agreement executed by an assignor U.S.
Lender and an assignee U.S. Lender pursuant to Section 17.3 substantially in
the form of Exhibit D hereto.

       "Australian Administrative Agent" means Chase Securities Australia
Limited  (ACN 002 888 011) in its capacity as Administrative Agent for the
lenders party to the Australian Credit Agreement and any successor thereto.

       "Australian Borrowers" means Apache Energy Limited and Apache Oil
Australia.

       "Australian Commitments" has the meaning of the term "Aggregate
Commitment" as defined in the Australian Credit Agreement.

       "Australian Credit Agreement" means that certain Credit Agreement of
even date herewith among the Australian Borrowers, the Australian Lenders, The
First National Bank of Chicago, as Global Administrative Agent, the Australian
Administrative Agent, First Chicago Capital Markets, Inc., as Arranger, and
Chase Securities Inc., as Arranger, as it may be amended, supplemented,
restated or otherwise modified and in effect from time to time.

       "Australian Lenders" means the financial institutions listed on the
signature pages of the Australian Credit Agreement and their respective
successors and assigns.

       "Australian Loan Documents" means the Australian Credit Agreement, any
notes, any guaranties, any assignment agreements, the agreement with respect to
fees, the Intercreditor Agreement and the Indemnity Agreements, together with
all exhibits, schedules and attachments thereto, and all other agreements,
documents, certificates, financing statements and instruments from time to time
executed and delivered pursuant to or in connection with any of the foregoing.

       "Authorized Officer" means the Chairman, the President, the Vice
President and Chief Financial Officer and the Treasurer of the Company, and any
officer of the Company, specified as such to the Global Administrative Agent in
writing by any of the aforementioned officers of the Company.

       "Borrowing Base Debt" means the aggregate amount of indebtedness for
borrowed money (including the Global Credit Facility Debt) of the Company, the
Australian Borrowers and the Canadian Borrower, and each of their Borrowing
Base Subsidiaries; provided, however, so long as no Downgrade Condition has
occurred and is continuing, Borrowing Base Debt shall not include the Excluded
Principal Debt; and provided further, that in the event of a Downgrade
Condition, Excluded Principal Debt will be included in Borrowing Base Debt only
following (i) the adjustment of the Global Borrowing Base by the Engineering
Banks to exclude the effect of Excluded Principal Debt on the Global Borrowing
Base, and (ii) notification of the Company of the amount of the Global
Borrowing Base as so adjusted.

       "Borrowing Base Subsidiary" means, at any time, any Subsidiary of the
Company which owns or controls any Properties and any Subsidiary that owns or
controls, directly or indirectly, another Subsidiary that owns or





                                       4
<PAGE>   11
controls any Properties.  The Borrowing Base Subsidiaries as of the Global
Effective Date are listed on Schedule 8.8 hereto.

       "Borrowing Date" means any Business Day on which an Advance is made
hereunder.

       "Borrowing Notice" is defined in Section 3.3.

       "Business Day" means (i) with respect to any borrowing, payment or rate
selection of Eurodollar Advances, a day other than Saturday or Sunday on which
banks are open for business in Chicago and New York and on which dealings in
United States dollars are carried on in the London interbank market and (ii)
for all other purposes, a day other than Saturday or Sunday on which banks are
open for business in Chicago and New York.

       "Canadian Administrative Agent" means Bank of Montreal in its capacity
as administrative agent for the lenders party to the Canadian Credit Agreement
and any successor thereto.

       "Canadian Borrower" means Apache Canada.

       "Canadian Commitments" has the meaning of the term "Aggregate
Commitment" as defined in the Canadian Credit Agreement.

       "Canadian Credit Agreement" means that certain Credit Agreement of even
date herewith among the Canadian Borrower, the Canadian Lenders, The First
National Bank of Chicago, as Global Administrative Agent, the Canadian
Administrative Agent, First Chicago Capital Markets, Inc., as Arranger, and
Chase Securities Inc., as Arranger, as it may be amended, supplemented,
restated or otherwise modified from time to time.

       "Canadian Lenders" means the financial institutions listed on the
signature pages of the Canadian Credit Agreement and their respective
successors and assigns.

       "Canadian Loan Documents" means the Canadian Credit Agreement, any
notes, any guaranties, any assignment agreements, the agreement with respect to
fees, the Intercreditor Agreement and the Indemnity Agreements, together with
all exhibits, schedules and attachments thereto, and all other agreements,
documents, certificates, financing statements and instruments from time to time
executed and delivered pursuant to or in connection with any of the foregoing.

       "Capitalized Lease" means, with any respect to a Person, any lease of
property by such Person as lessee which would be capitalized on a balance sheet
of such Person prepared in accordance with Agreement Accounting Principles.

       "Capitalized Lease Obligations" means, with respect to a Person, the
amount of the obligations of such Person under Capitalized Leases which would
be shown as a liability on a balance sheet of such Person prepared in
accordance with Agreement Accounting Principles.

       "Cash Equivalent Investment" means, at any time:

              (a)    any evidence of Indebtedness, maturing not more than one
       year after such time, issued or guaranteed by the United States
       Government;

              (b)    commercial paper, maturing not more than nine months from
       the date of issue, which is issued by any Agent or any Agent's holding
       company, or by (i) a corporation (other than the Company or an Affiliate
       of the Company) organized under the laws of any state of the United
       States or of the District of Columbia and rated A-1 by S&P or P-1 by
       Moody's, or (ii) any U.S. Lender (or its holding company)





                                       5
<PAGE>   12
       which has (or which at the time is a subsidiary of a holding company
       which has) a Qualified Long Term Rating;

              (c)    any certificate of deposit, time deposit or banker's
       acceptance, maturing not more than one year after such time, which is
       issued by any Agent or any Agent's holding company, or by either (i) a
       commercial banking institution that is a member of the Federal Reserve
       System and has a combined capital and surplus and undivided profits of
       not less than $500,000,000, which has (or which at the time is a
       subsidiary of a holding company which has) a Qualified Long Term Rating,
       or (ii) any U.S. Lender which has (or which is a subsidiary of a holding
       company which has) a Qualified Long Term Rating; or

              (d)    any repurchase agreement entered into with any Agent or
       any U.S. Lender (or other commercial banking institution of the stature
       referred to in clause (c)(i)) which (i) is secured by a fully perfected
       security interest in any obligation of the type described in any of
       clauses (a) through (c); and (ii) has a market value at the time such
       repurchase agreement is entered into of not less than 100% of the
       repurchase obligation of such U.S. Lender or Agent (or other commercial
       banking institution) thereunder.

       "CERCLA" means the Comprehensive Environmental Response, Compensation
and Liability Act of 1980, as amended.

       "CERCLIS" means the Comprehensive Environmental Response, Compensation
and Liability Information System List.

       "Change in Control" means:

                     (a)    the failure by the Company to own, free and clear
              of all Liens or encumbrances, 100% of the outstanding capital
              stock of MW Petroleum on a fully diluted basis or the failure of
              MW Petroleum to own, free and clear of all liens or encumbrances,
              100% of the outstanding capital stock of MWJR on a fully diluted
              basis, except as a result of the merger of either MW Petroleum
              and MWJR into the Company or any U.S. Subsidiary pursuant to
              Section 11.2; provided, however, that, in the event of a merger
              of MW Petroleum with a U.S. Subsidiary, such U.S. Subsidiary
              shall at its own expense deliver to the Global Administrative
              Agent a duly executed Guaranty, substantially in the form of
              Exhibit L, together with such related documents and opinions as
              the Global Administrative Agent may request; or

                     (b)    the failure by the Company to own, directly or
              indirectly, free and clear of all Liens, other than Liens
              permitted under Section 11.5 hereof, 100% of the outstanding
              capital stock of each Borrowing Base Subsidiary, other than
              Apache International, and ninety-five percent (95%) of the
              outstanding capital stock of Apache International (and a
              proportionately reduced interest in each Borrowing Base
              Subsidiary of Apache International), on a fully diluted basis
              except as a result of a merger of such Borrowing Base Subsidiary
              with the Company, another Borrowing Base Subsidiary or with any
              other Person as permitted pursuant to Section 11.2, or as a
              result of a sale of such Borrowing Base Subsidiary as permitted
              pursuant to Section 11.3; or

                     (c)    any Unrelated Person or any Unrelated Persons
              acting together which would constitute a Group, together with any
              Affiliates or Related Persons thereof (in each case also
              constituting Unrelated Persons), shall at any time either (i)
              Beneficially Own more than 20% of the aggregate voting power of
              all classes of Voting Stock of the Company or (ii) succeed in
              having sufficient of its or their nominees elected to the Board
              of Directors of the Company such that such nominees, when added
              to any existing director remaining on the Board of Directors of
              the Company after such election who is an Affiliate or Related
              Person of such Person or Group, shall constitute a majority of
              the Board of Directors of the Company.





                                       6
<PAGE>   13
              As used herein (A) "Beneficially Own" means "beneficially own" as
              defined in Rule 13d-3 of the Securities Exchange Act of 1934, as
              amended, or any successor provision thereto; (B) "Group" means a
              "group" for purposes of Section 13(d) of the Securities Exchange
              Act of 1934, as amended; (C) "Unrelated Person" means at any time
              any Person other than the Company or any Subsidiary and other
              than any trust for any employee benefit plan of the Company or
              any Subsidiary of the Company; (D) "Related Person" of any Person
              shall mean any other Person owning (1) 5% or more of the
              outstanding common stock of such Person or (2) 5% or more of the
              Voting Stock of such Person; and (E) "Voting Stock" of any Person
              shall mean capital stock of such Person which ordinarily has
              voting power for the election of directors (or persons performing
              similar functions) of such Person, whether at all times or only
              so long as no senior class of securities has such voting power by
              reason of any contingency.

       "Chase" means The Chase Manhattan Bank, in its individual capacity and
its successors.

       "Claims" is defined in Section 14.7.

       "Co-Agent" is defined in the Preamble.

       "Code" means the Internal Revenue Code of 1986, as amended, reformed or
otherwise modified and in effect from time to time.

       "Combined Commitments" means, at any time, the aggregate of the
Aggregate Commitments, the Canadian Commitments and the Australian Commitments
at such time.

       "Combined Lenders" means the U.S. Lenders, the Canadian Lenders and the
Australian Lenders.

       "Combined Required Lenders" means, at any time, Combined Lenders having
greater than 66-2/3% of the aggregate amount of the Combined Commitments at
such time.

       "Commercial Paper Backup Exclusion Event" means, at any time, the
occurrence and continuation of (i) any Default, (ii) any Unmatured Default, or
(iii) any Debt Limit Excession, other than a Debt Limit Excession relating to a
Material Adverse Effect.  For purposes of this definition, a Debt Limit
Excession relating to a Material Adverse Effect shall include any Debt Limit
Excession arising as a direct result of an action by the Engineering Banks
pursuant to Sections 2.3(d) or 2.3(e)(i).

       "Commercial Paper Obligations" means, at any time, the obligations of
the Company arising under any commercial paper issued by the Company pursuant
to a commercial paper program of the Company which is rated by any Rating
Agency.

       "Commitment" means, with respect to each U.S. Lender, the obligation of
such U.S. Lender to make Loans not exceeding the amount set forth as its
Commitment opposite its signature below or in the relevant Assignment
Agreement, as such amount may be modified from time to time pursuant to the
provisions of this Agreement, including any Assignment Agreement executed by
such U.S. Lender and its Assignee Lender and delivered pursuant to Section 17.3
and any reduction pursuant to Sections 4.5, or 13.1; it being understood,
however, that a change in the Global Borrowing Base does not constitute a
modification of any Commitment.

       "Company" is defined in the Preamble.

       "Company's Engineers' Report" means a report prepared by the Company's
engineering staff and certified by the Company's head of "Technical Services"
and furnished by the Company to the Global Administrative Agent and U.S.
Lenders pursuant to Section 9.1(e) which shall set forth (i) the estimated
volume and rate of production of Hydrocarbons which may reasonably be expected
to be produced from Proved Reserves for each Property, (ii)





                                       7
<PAGE>   14
a computation of the projected gross revenues from Proved Reserves attributable
to each Property, (iii) a computation of the future net revenues for each
Property, showing separately net revenues from Proved Developed Producing
Reserves, Proved Developed Non-Producing Reserves and Proved Undeveloped
Reserves and (iv) projections as to the amount of Proved Reserves for each
Property, showing separately Proved Developed Producing Reserves, Proved
Developed Non-Producing Reserves and Proved Undeveloped Reserves.  The
Company's Engineers' Report shall be prepared using economic parameters
(including pricing, inflation and discount rate) provided by the Engineering
Banks and in accordance with established criteria generally accepted in the oil
and gas industry for use by independent petroleum engineers in making
determinations and appraisals of hydrocarbon reserves, including assumptions,
estimates and projections as to production expenses, availability of reserves
and rates of production.  The Engineering Banks may, in their sole discretion
after consulting with the Company, require modification of any assumption,
projection or estimate which they (acting reasonably) find unacceptable.

       "Competitive Bid Advance" means a borrowing hereunder consisting of the
aggregate amount of the several Competitive Bid Loans made by some or all of
the U.S. Lenders to the Company at the same time, having the same Stated
Maturity Date and for the same Interest Period.

       "Competitive Bid Borrowing Notice" is defined in Section 3.4(e).

       "Competitive Bid Loan" means, with respect to a U.S. Lender, a
competitive bid loan made by such U.S. Lender pursuant to Section 2.1 and
Section 3.4 as the result of a Competitive Bid Borrowing Notice from the
Company requesting a Competitive Bid Advance.

       "Competitive Bid Margin" means the margin above or below the applicable
Eurodollar Base Rate or Alternate Base Rate offered for a Bid Loan, expressed
as a percentage (rounded to the nearest 1/16 of 1%) to be added or subtracted
from the Eurodollar Base Rate or the Alternate Base Rate, as applicable.

       "Competitive Bid Note" means a promissory note in substantially the form
of Exhibit A-2 hereto, with applicable insertions, duly executed and delivered
to the Global Administrative Agent by the Company for the account of a U.S.
Lender and payable to the order of such U.S. Lender, including any amendment,
modification, renewal or replacement of such promissory note.

       "Competitive Bid Quote" means a Competitive Bid Quote substantially in
the form of Exhibit K hereto completed and delivered by a U.S. Lender to the
Global Administrative Agent in accordance with Section 3.4(c).

       "Competitive Bid Quote Request" means a Competitive Bid Quote Request,
substantially in the form of Exhibit E hereto, completed and delivered by the
Company to the Global Administrative Agent in accordance with Section 3.4(a).

       "Consolidated Interest Expense" means, for any period for which a
determination thereof is to be made, total interest expense, whether paid or
accrued (but excluding that attributable to Capitalized Leases), of the Company
and the Consolidated Subsidiaries on a consolidated basis including, without
limitation, all commissions, discounts and other fees and charges owing with
respect to letters of credit and bankers' acceptance financing.

       "Consolidated Net Income" means, for any period for which a
determination thereof is to be made, the net income (or loss) after taxes of
the Company and the Consolidated Subsidiaries on a consolidated basis for such
period taken as a single accounting period; provided that there shall be
excluded the income (or loss) of any Affiliate of the Company or other Person
(other than a Consolidated Subsidiary of the Company) in which any Person
(other than the Company or any of the Consolidated Subsidiaries) has a joint
interest, except to the extent of the amount of dividends or other
distributions actually paid to the Company or any of the Consolidated
Subsidiaries by such Affiliate or other Person during such period.





                                       8
<PAGE>   15
       "Consolidated Subsidiary" means, as of the time a determination thereof
is to be made, any Subsidiary or other entity the accounts of which would be
consolidated with those of the Company in its consolidated financial statements
if such statements were prepared as of such date.

       "Consolidated Tangible Net Worth" means, as of the time a determination
thereof is to be made, the consolidated stockholders' equity of the Company and
the Consolidated Subsidiaries, less their consolidated intangible assets, all
determined as of such date in accordance with Agreement Accounting Principles.

       "Continuation/Conversion Notice" means a notice by means of telecopy or
telephone (confirmed in writing promptly thereafter if by telephone) of
continuation or conversion, which notice shall specify the principal amount to
be continued or converted, the date of such continuation or conversion, the
type of Revolving Loan and, if such Revolving Loan is to be a Revolving
Eurodollar Loan, the Interest Period, which notice, when delivered by telecopy
or confirmed in writing, shall be substantially in the form of Exhibit F and
executed on behalf of the Company by an Authorized Officer.

       "Controlled Group" means all members of a controlled group of
corporations and all trades or businesses (whether or not incorporated) under
common control which, together with the Company or any Subsidiary, are treated
as a single employer under Section 414(b) or 414(c) of the Code.

       "Corporate Base Rate" means a rate per annum equal to the corporate base
rate of interest announced by First Chicago from time to time, changing when
and as said corporate base rate changes.

       "D&P" means Duff & Phelps Credit Rating Company and any successor
thereto that is a nationally recognized rating agency.

       "Debt" means all Indebtedness of the type referred to in clauses (i),
(ii), (iii), (iv) and (v) of the definition of Indebtedness.

       "Debt/Capitalization Ratio" means, as of the time a determination
thereof is to be made, the ratio expressed as a decimal of (x) the aggregate
outstanding amount of the consolidated Debt of the Company and its Consolidated
Subsidiaries, to (y) the sum of the consolidated stockholders' equity of the
Company and its Consolidated Subsidiaries plus the aggregate outstanding amount
of the consolidated Debt of the Company and its Consolidated Subsidiaries;
provided, however, that, for purposes of the definition of Eurodollar Spread,
the Debt/Capitalization Ratio on each day commencing on the forty-fifth (45th)
day following the end of a calendar quarter shall be deemed to be the lesser of
(a) the Debt/Capitalization Ratio as of the end of such calendar quarter and
(b) the Debt/Capitalization Ratio as of the final day of the month following
the end of such calendar quarter, in each case based on a certificate received
by the Global Administrative Agent and the U.S. Lenders from an Authorized
Officer of the Company pursuant to Section 9.1(k); provided, further, that
until the forty-fifth (45th) day following the calendar quarter ending
September 30, 1996, the Debt/Capitalization Ratio shall be deemed to be "(0.55"
for purposes of the definition of Eurodollar Spread and the calculation of
applicable fees.

       "Debt Limit Excession" means the condition existing at any time prior to
the Termination Date in which the outstanding principal balance of the
Borrowing Base Debt as of such date exceeds the Global Borrowing Base as of
such date.

       "Declining Lender" is defined in Section 2.2.

       "Default" means any event described in Article XII.

       "Downgrade Condition" shall be deemed to exist hereunder at all times
when the Company's applicable Rating Level is equal to Level IV.





                                       9
<PAGE>   16
       "EBITDDA" means, for any period for which a determination thereof is to
be made, without duplication, the sum of the amounts for such period of (i)
Consolidated Net Income, (ii) Consolidated Interest Expense, (iii) depreciation
expense and depletion expense, (iv) amortization expense, (v) federal and state
taxes, (vi) other non-cash charges and expenses and (vii) any losses arising
outside of the ordinary course of business which have been included in the
determination of Consolidated Net Income less any gains arising outside of the
ordinary course of business which have been included in the determination of
Consolidated Net Income, all as determined on a consolidated basis for the
Company and the Consolidated Subsidiaries.

       "Engineering Bank" means each of First Chicago and Chase in their
respective capacities as Engineering Banks.

       "Environmental Law"  means any federal, state, or local statute, or rule
or regulation promulgated thereunder, any judicial or administrative order or
judgment or written administrative request to which the Company or any
Subsidiary is party or which are applicable to the Company or any Subsidiary or
the Properties (whether or not by consent), and any provision or condition of
any permit, license or other governmental operating authorization, relating to
(A) protection of the environment, persons or the public welfare from actual or
potential exposure for the effects of exposure to any actual or potential
release, discharge, spill or emission (whether past or present) of, or
regarding the manufacture, processing, production, gathering, transportation,
importation, use, treatment, storage or disposal of, any chemical, raw
material, pollutant, contaminant or toxic, corrosive, hazardous, or non-
hazardous substance or waste, including petroleum; or (B) occupational or
public health or safety.

       "Equivalent Amount" in one currency (the "first currency") of an amount
in another currency (the "other currency") means the amount of the first
currency which is required to purchase such amount of the other currency at the
rate determined on the basis of the Spot Rate of Exchange for the other
currency against the first currency at the time of determination.

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

       "Eurodollar Advance" means a Eurodollar Bid Rate Advance or a Eurodollar
Revolving Advance.

       "Eurodollar Auction" means a solicitation of Competitive Bid Quotes
setting forth Competitive Bid Margins pursuant to Section 3.4.

       "Eurodollar Base Rate" means, with respect to a Eurodollar Revolving
Advance or a Eurodollar Bid Rate Advance for the relevant Interest Period, the
rate determined by the Global Administrative Agent to be the arithmetic average
of the rates reported to the Global Administrative Agent by each Reference
Lender as the rate at which deposits in U.S. dollars are offered by such
Reference Lender to first-class banks in the London interbank market at
approximately 11 a.m. (London time) two Business Days prior to the first day of
such Interest Period, in the approximate amount of such Reference Lender's
relevant Eurodollar Revolving Loan or, in the case of a Eurodollar Bid Rate
Loan, the amount of the Eurodollar Bid Rate Loan requested by the Company, and
having a maturity approximately equal to such Interest Period.  If any
Reference Lender fails to provide such quotation to the Global Administrative
Agent, then the Global Administrative Agent shall determine the Eurodollar Base
Rate on the basis of the quotations of the remaining Reference Lender.

       "Eurodollar Bid Rate" means, with respect to a Eurodollar Bid Rate Loan
made by a given U.S. Lender for the relevant Interest Period, the sum of (i)
the Eurodollar Base Rate and (ii) the Competitive Bid Margin offered by such
U.S. Lender and accepted by the Company.

       "Eurodollar Bid Rate Advance" means a Competitive Bid Advance which
bears interest at a Eurodollar Bid Rate.

       "Eurodollar Bid Rate Loan" means a Competitive Bid Loan which bears
interest at the Eurodollar Bid Rate.





                                       10
<PAGE>   17
       "Eurodollar Loan" means a Eurodollar Bid Rate Loan or a Eurodollar
Revolving Loan.

       "Eurodollar Revolving Advance" means a Revolving Advance which bears
interest at a Eurodollar Rate.

       "Eurodollar Revolving Loan" means a Revolving Loan which bears interest
at a Eurodollar Rate.

       "Eurodollar Rate" means, with respect to a Eurodollar Revolving Loan or
Eurodollar Revolving Advance for each day during the relevant Interest Period,
the sum of (i) the quotient of (a) the Eurodollar Base Rate applicable to that
Interest Period, divided by (b) one minus the Reserve Requirement (expressed as
a decimal) applicable to that Interest Period, plus (ii) the Eurodollar Spread
applicable to that day.  The Eurodollar Rate shall be rounded, if not a whole
number multiple of 1/16 of 1%, to the next higher 1/16 of 1%.

       "Eurodollar Spread" means, on any date and with respect to each
Eurodollar Advance, the applicable rate per annum set forth in Schedule A based
on the applicable Rating Level on such date.

       "Excluded Principal Debt" means, at any time as long as no Downgrade
Condition exists, the consolidated aggregate principal amount of obligations of
the Company (i) under the $180,000,000 7.95% Notes due 2026 issued pursuant to
that certain Trust Indenture dated February 15, 1996, (ii) under the
$100,000,000 7.70% Notes due 2026 issued pursuant to that certain Trust
Indenture dated February 15, 1996, (iii) up to $172,500,000 under the 6%
Convertible Subordinated Debentures due 2002 issued pursuant to that certain
Trust Indenture, dated January 4, 1995, and (iv) up to $6,600,000 under the
Apache Offshore Investment Partnership bank facility.

       "Federal Funds Effective Rate" means, for any period for which a
determination thereof is made, a fluctuating interest rate per annum equal for
each day during such period to (i) the weighted average of the rates on
overnight federal funds transactions with members of the Federal Reserve System
arranged by federal funds brokers, as published for such day (or, if such day
is not a Business Day, for the preceding Business Day) by the Federal Reserve
Bank of New York; or (ii) if such rate is not so published for any day which is
a Business Day, the average of the quotations at approximately 10 a.m. (Chicago
time) for such day on such transactions received by the Global Administrative
Agent from three federal funds brokers of recognized standing selected by it.

       "First Chicago" means The First National Bank of Chicago in its
individual capacity, and its successors and assigns.

       "Floating Bid Rate" means, with respect to a Floating Bid Rate Loan made
by a given U.S. Lender, the sum of (i) the Alternate Base Rate, changing when
and as the Alternate Base Rate changes, and (ii) the Competitive Bid Margin
offered by such U.S. Lender and accepted by the Company.

       "Floating Bid Rate Advance" means a Competitive Bid Advance which bears
interest at the Floating Bid Rate.

       "Floating Bid Rate Loan" means a Competitive Bid Loan which bears
interest at the Floating Bid Rate.

       "Floating Rate Advance" means a Floating Bid Rate Advance or a Floating
Rate Revolving Advance.

       "Floating Rate Auction" means a solicitation of Competitive Bid Quotes
setting forth the Competitive Bid Margin for Floating Bid Rates pursuant to
Section 3.4.

       "Floating Rate Loan" means a Floating Bid Rate Loan or a Floating Rate
Revolving Loan.

       "Floating Rate Revolving Advance" means a Revolving Advance which bears
interest at the Alternate Base Rate.





                                       11
<PAGE>   18
       "Floating Rate Revolving Loan" means a Revolving Loan which bears
interest at the Alternate Base Rate.

       "Global Administrative Agent" means The First National Bank of Chicago
or any Affiliate thereof in its capacity as global administrative agent for the
U.S. Lenders pursuant to Article XV, and not in its individual capacity as a
U.S. Lender or in its capacity as an Engineering Bank and any successor Global
Administrative Agent appointed pursuant to Article XV.

       "Global Borrowing Base" means the Global Borrowing Base then in effect
as calculated and established in accordance with the terms and provisions of
Section 2.3, as such Global Borrowing Base shall be reduced from time to time
pursuant to Sections 2.3(a), (d), (e) or (f) or Section 11.3.

       "Global Credit Facility Debt" means, at any time, the consolidated
aggregate principal amount of (i) Obligations of the Company under this
Agreement, (ii) the "Obligations" (as defined in the Australian Credit
Agreement) of the Australian Borrowers under the Australian Loan Documents and
(iii) the "Obligations" (as defined in the Canadian Credit Agreement) of the
Canadian Borrower under the Canadian Loan Documents.

       "Global Effective Date" means a date agreed upon by the Company, the
Arrangers and the Global Administrative Agent as the date on which the
conditions precedent set forth in Section 7.1 of this Agreement have been
satisfied.

       "Global Effectiveness Notice" means a notice and certificate of the
Company properly executed by an Authorized Officer addressed to the Combined
Lenders and delivered to the Global Administrative Agent, in sufficient number
of counterparts to provide one for each Combined Lender and each Agent, whereby
the Company certifies satisfaction of all the conditions precedent to the
effectiveness under Section 7.1 of this Agreement, under Section 7.1 of the
Australian Credit Agreement and under Section 7.1 of the Canadian Credit
Agreement.

       "Global Loan Documents" means the U.S. Loan Documents, the Australian
Loan Documents, the Canadian Loan Documents, the Intercreditor Agreement and
Indemnity Agreements, together with all exhibits, schedules and attachments
thereto, and all other agreements, documents, certificates, financing
statements and instruments from time to time executed and delivered pursuant to
or in connection with any of the foregoing.

       "Guaranteed Obligation" means, with respect to any Person as of the time
a determination thereof is to be made (without duplication), (i) any
obligation, contingent or otherwise, of any such Person whether as guarantor,
surety or otherwise with respect to any Indebtedness (other than Indebtedness
for which the Company or any Borrowing Base Subsidiary of the Company is the
primary obligor), and (ii) any obligation to a foreign government or foreign
governmental agency under which such Person must either perform or pay a sum of
money in lieu of performance; provided, however, that any obligation of any
Person which is Indebtedness of the Company or one or more of its Borrowing
Base Subsidiaries shall not be a Guaranteed Obligation of such Person for
purposes of this Agreement; and provided further that obligations pursuant to
any oil, gas and/or mineral lease, farm-out agreement, division order, contract
for the sale, exchange or processing of oil, gas and/or other hydrocarbons,
unitization and pooling declaration and agreement, operating agreement,
development agreement, area of mutual interest agreement, marketing agreement
or arrangement, forward sales of Hydrocarbons and other agreements which are
customary in the oil, gas and other mineral exploration, development and
production business and in the business of processing of gas and gas condensate
production for the extraction of products therefrom are not Guaranteed
Obligations for purposes of this definition.

       "Guarantor" means each of MW Petroleum and any Subsidiary of the Company
which is a guarantor pursuant to a Guaranty in favor of the Agents and the U.S.
Lenders delivered pursuant to Section 9.11.

       "Guaranty" means that certain Guaranty, dated as of July 1, 1991, by MW
Petroleum Corporation, a Delaware corporation, as assumed by MW Petroleum
pursuant to that certain Assumption Agreement, dated as of December 24, 1991,
and each other guaranty delivered pursuant to Section 9.11, or as required by
the definition





                                       12
<PAGE>   19
of "Change of Control", in each case as such guaranty may from time to time be
amended, supplemented, restated, reaffirmed or otherwise modified.

       "Hazardous Material" means (a) any "hazardous substance", as defined by
CERCLA; (b) any "hazardous waste", as defined by the Resource Conservation and
Recovery Act, as amended; (c) any petroleum, crude oil or any fraction thereof;
(d) any hazardous, dangerous or toxic chemical, material, waste or substance
within the meaning of any Environmental Law; (e) any radioactive material,
including any naturally occurring radioactive material, and any source, special
or by-product material as defined in 42 U.S.C. Section  2011 et. seq., and any
amendments or reauthorizations thereof; (f) asbestos-containing materials in
any form or condition; or (g) polychlorinated biphenyls in any form or
condition.

       "Highest Lawful Rate" is defined in Section 3.2.

       "Hydrocarbon Interests" means leasehold and other interests in or under
leases with respect to property located in the United States of America,
Canada, Australia and any other countries acceptable to the Combined Required
Lenders, mineral fee interests, production sharing contracts, overriding
royalty and royalty interests, net profit interests and production payment
interests, insofar and only insofar as such interests relate to Hydrocarbons
located in the United States of America, Canada, Australia and any other
countries acceptable to the Combined Required Lenders, including any reserved
or residual interests of whatever nature.

       "Hydrocarbons" means oil, gas and all other liquid or gaseous
hydrocarbons and all products refined therefrom and all other minerals and
substances, including sulfur, geothermal steam, water, carbon dioxide, helium
and any and all other minerals, ores or substances of value and the products
and proceeds therefrom.

       "IFC" means the International Finance Corporation.

       "include" or "including" means including without limiting the generality
of any description preceding such terms, and, for purposes of this Agreement
and each other U.S. Loan Document, the parties hereto agree that the rule of
ejusdem generis shall not be applicable to limit a general statement, which is
followed by or referable to an enumeration of specific matters, to matters
similar to the matters specifically mentioned.

       "Indebtedness" means, with respect to a Person at any time, such
Person's (i) obligations for borrowed money, (ii) obligations representing the
deferred purchase price of property or services, including obligations payable
out of Hydrocarbon production, other than accounts payable arising in the
ordinary course of such Person's business payable on terms customary in the
trade, (iii) obligations, whether or not assumed, secured by Liens (other than
Liens permitted by Section 11.5, clauses (a) through (d) or clauses (f) through
(h)) or payable out of the proceeds of production from property now or
hereafter owned or acquired by such Person, (iv) obligations (other than the
obligations previously described in clauses (i), (ii), or (iii) of this
definition) which are evidenced by notes, bonds, debentures, bankers'
acceptances, or other instruments, (v) Capitalized Lease Obligations, (vi)
liabilities under interest rate swap, exchange, collar or cap agreements and
all other agreements or arrangements designed to protect such Person against
fluctuations in interest rates or currency exchange rates, (vii) net
liabilities under commodity hedge, commodity swap, exchange, collar or cap
agreements, fixed price agreements and all other agreements or arrangements
designed to protect a person against fluctuations in oil or gas prices,
provided that, each such contract will be marked-to-market and the gain or loss
on each such contract and any amounts on deposit with any counterparties or
exchanges shall be included in determining such Person's net liability with
respect to such contract, (viii) obligations, contingent or otherwise, relative
to the amount of all letters of credit, whether or not drawn, and (ix) all
Guaranteed Obligations of such Person in respect of any of the foregoing;
provided, however, that "Indebtedness" shall not include any amounts included
as deferred credits on the financial statements of such Person or of a
consolidated group including such Person, determined in accordance with
Agreement Accounting Principles; provided further that for purposes of the
foregoing clauses (ii), (iii) and (ix) and the "other instruments" described in
foregoing clause (iv), obligations pursuant to any oil, gas and/or mineral
lease, farm-out agreement, division order, contract for the exchange or
processing of oil, gas and/or other hydrocarbons, unitization and pooling





                                       13
<PAGE>   20
declaration and agreement, operating agreement, development agreement, area of
mutual interest agreement, marketing agreement or arrangement, forward sales of
Hydrocarbons, and other agreements which are customary in the oil, gas and
other mineral exploration, development and production business and in the
business of processing of gas and gas condensate production for the extraction
of products therefrom shall not be Indebtedness.

       "Indemnified Person" is defined in Section 14.7.

       "Indemnity Agreements" means (i) that certain letter agreement, dated as
of October 31, 1996, among the Company, the Global Administrative Agent, the
Australian Administrative Agent, the Canadian Administrative Agent and the
Combined Lenders, (ii) that certain letter agreement, dated as of October 31,
1996, among the Australian Borrowers, the Global Administrative Agent, the
Australian Administrative Agent, the Canadian Administrative Agent and the
Combined Lenders, and (iii) that certain letter agreement, dated as of October
31, 1996, among the Canadian Borrower, the Global Administrative Agent, the
Australian Administrative Agent, the Canadian Administrative Agent and the
Combined Lenders, each in form and substance acceptable to the Agents and the
Arrangers, as each may be amended, supplemented, restated or otherwise modified
from time to time.

       "Intercreditor Agreement" means that certain Intercreditor Agreement of
even date herewith among the Global Administrative Agent, the Co-Agent, the
Canadian Administrative Agent, the Australian Administrative Agent, the
Arrangers and the Combined Lenders, in form and substance acceptable to the
Agents and the Arrangers, as it may be amended, supplemented, restated or
otherwise modified and in effect from time to time.

       "Interest Period" means, with respect to a Eurodollar Bid Rate Advance
or a Eurodollar Revolving Advance, a period of one (1), two (2), three (3) or,
subject to availability, six (6) months commencing on a Business Day selected
by the Company pursuant to this Agreement.  Such Interest Period shall end on
(but exclude) the day which corresponds numerically to such date one (1), two
(2), three (3) or six (6) months thereafter, provided, however, that if there
is no such numerically corresponding day in such next, second, third or sixth
succeeding month, such Eurodollar Interest Period shall end on the last
Business Day of such next, second, third or sixth succeeding month.  If an
Interest Period would otherwise end on a day which is not a Business Day, such
Interest Period shall end on the next succeeding Business Day; provided,
however, that if said next succeeding Business Day falls in the next month,
such Interest Period shall end on the immediately preceding Business Day.

       "Investment" means, with respect to any Person, any loan, advance,
extension of credit (excluding accounts receivable arising in the ordinary
course of business on terms customary in the trade) or contribution of capital
by such Person to any other Person or any investment in, or purchase or other
acquisition of, the stock, notes, debentures or other securities of any other
Person made by such Person.  The amount of any Investment shall be the original
principal or capital amount thereof less all returns of principal or equity
thereon (and without adjustment by reason of the financial condition of such
other Person) and shall, if made by the transfer or exchange of property other
than cash, be deemed to have been made in an original principal or capital
amount equal to the fair market value of such property.

       "Invitation for Competitive Bid Quotes" means an Invitation for
Competitive Bid Quotes substantially in the form of Exhibit H hereto, completed
and delivered by the Global Administrative Agent to the U.S. Lenders in
accordance with Section 3.4(b).

       "July 1991 Agreement" is defined in Recital 1.

       "Lending Installation" means any office, branch, subsidiary or affiliate
of any U.S. Lender, the Global Administrative Agent or any Arranger.

       "Lien" means any interest in assets or property securing an obligation
owed to, or a claim by, a Person other than the owner of the asset or property,
whether such interest is based on the common law, statute or contract, and
whether such obligation or claim is fixed or contingent, and including any
security interest, mortgage, pledge,





                                       14
<PAGE>   21
lien, claim, charge, encumbrance, contract for deed, installment sales
contract, production payment, lessor's interest under a Capitalized Lease or
analogous instrument, in, of or on any Person's assets or properties in favor
of any other Person.

       "Loan" means any of the Revolving Loans and the Competitive Bid Loans.

       "MW Petroleum" means MW Petroleum Corporation, a Colorado corporation.

       "MWJR" means MWJR Petroleum Corporation, a Delaware corporation.

       "March 1995 Agreement" is defined in Recital 4.

       "Material Adverse Effect" means with respect to any matter that such
matter (i) could reasonably be expected to materially and adversely affect the
assets, business, properties, condition (financial or otherwise), prospects, or
results of operations of the Company and its Subsidiaries, taken as a whole, or
the value or condition of the Properties taken as a whole, or the ability of
the Company or any Subsidiary of the Company which is a party to a U.S. Loan
Document to perform its respective obligations under any of the U.S. Loan
Documents to which it is party, or (ii) has been brought by or before any court
or arbitrator or any governmental body, agency or official, and draws into
question or otherwise has or reasonably could be expected to have a material
adverse effect on the validity or enforceability of any material provision of
any U.S. Loan Document against any obligor party thereto or the rights,
remedies and benefits available to the Agents and the U.S. Lenders under the
U.S. Loan Documents.

       "Moody's" means Moody's Investors Service, Inc. and any successor
thereto that is a nationally-recognized rating agency.

       "Multiemployer Plan" means a Plan maintained pursuant to a collective
bargaining agreement to which the Company or any member of the Controlled Group
is a party and to which more than one employer is obligated to make
contributions.

       "1992 Revolving Loans" is defined in Recital 2.

       "1994 Loans" is defined in Recital 3.

       "1995 Loans" is defined in Recital 4.

       "1996 Engineers' Report" means those certain Supplemental Reserve
Reports as of January 1, 1996 of the Company's engineers, Ryder Scott Company
Petroleum Engineers, dated as of April 16, 1996, with respect to the
Properties, copies of which have been delivered to the Global Administrative
Agent and each of the U.S. Lenders.

       "Non-Borrowing Base Subsidiary" means, at any time, any Subsidiary of
the Company which is not a Borrowing Base Subsidiary.

       "Note" means any Revolving Note or any Competitive Bid Note.

       "Notice of Assignment" is defined in Section 17.3(b).

       "Obligations" means all unpaid principal of and accrued and unpaid
interest on the Notes, all accrued and unpaid facility fees, and all other
obligations of the Company or any Subsidiary to any U.S. Lender or any Agent,
whether or not contingent, arising under or in connection with any of the U.S.
Loan Documents, and all obligations in respect of any interest rate swap or
interest rate cap or collar agreement or other interest rate hedging agreement
entered into by the Company or any Subsidiary with any U.S. Lender.





                                       15
<PAGE>   22
       "or" as used in this Agreement is not exclusive.

       "Original Revolving Loans" is defined in Recital 1.

       "Original Term Loans" is defined in Recital 1.

       "Original Termination Date" means October 31, 2001.

       "Other Currency" is defined in Section 6.9(a).

       "Parent Guaranty" means that certain Guaranty, dated as of October 31,
1996, by the Company in favor of the Canadian Lenders and the other Lender
Parties (as defined therein) under the Canadian Credit Agreement, as such
Parent Guaranty may from time to time be amended, supplemented, restated,
reaffirmed or otherwise modified.

       "Participant" is defined in Section 17.2(a).

       "Payment Date" means the second day of January and the first day of each
April, July and October of each calendar year, commencing October 1, 1996.

       "PBGC" means the Pension Benefit Guaranty Corporation and its successors
and assigns.

       "Person" means any corporation, limited liability company, natural
person, firm, joint venture, partnership, trust, unincorporated organization,
enterprise, government or any department or agency of any government.

       "Phoenix Egypt" means Phoenix Resources Company of Qarun, Inc., a
Delaware corporation and a wholly-owned Subsidiary of Phoenix Resources Company
International, a Delaware corporation, a wholly-owned Subsidiary of The Phoenix
Resource Companies, Inc., a Delaware corporation, an indirectly ninety-five
percent-owned (95%-owned) subsidiary of the Company.

       "Plan" means an employee pension benefit plan which is covered by Title
IV of ERISA or subject to the minimum funding standards under Section 412 of
the Code as to which the Company or any member of the Controlled Group may have
any liability.

       "Producers Energy" means Producers Energy Marketing, LLC, a Delaware
limited liability company.

       "Projections" means the Company's Operations and Financial Summary Data
consisting of the Company Case dated April 19, 1996 and the Liquidating Case
dated April 19, 1996.

       "Properties" means Hydrocarbon Interests which are covered by either the
most recent Approved Engineers' Report or the most recent Company's Engineers'
Report submitted by the Company pursuant to Section 9.1 and which Hydrocarbon
Interests are included in the calculation of the then effective Global
Borrowing Base.

       "Proved Developed Non-Producing Reserves" means, with respect to the
Properties, those quantities of Hydrocarbons, estimated with reasonable
certainty, as demonstrated by geological and engineering data, to be
economically recoverable from the Properties by producing methods under
existing economic conditions using existing equipment and operating methods
from locations which are behind the casing of existing wells or at minor depths
below the present bottom of such wells and which are expected to be produced
through these wells in the predictable future, where a relatively small
expenditure is required for completion or recompletion to make such
Hydrocarbons available for production.





                                       16
<PAGE>   23
       "Proved Developed Producing Reserves" means, with respect to the
Properties, those quantities of Hydrocarbons, estimated with reasonable
certainty, as demonstrated by geological and engineering data, to be
economically recoverable from the Properties by producing methods under
existing economic conditions using existing equipment and operating methods
from existing completion intervals open for production in existing wells.

       "Proved Reserves" means, with respect to the Properties, Proved
Developed Producing Reserves, Proved Developed Non-Producing Reserves and
Proved Undeveloped Reserves.

       "Proved Undeveloped Reserves" means, with respect to the Properties,
those quantities of Hydrocarbons, estimated with reasonable certainty, as
demonstrated by geological and engineering data, to be economically recoverable
from the Properties by producing methods under existing economic conditions
using existing equipment, or equipment for which there is a reasonable
expectation of or commitment to installation in the future, and operating
methods from (i) existing wells where a relatively large expenditure is
required for completion or recompletion and (ii) new wells on undrilled
locations (a) which are direct offsets to existing wells then or previously
open for production, (b) which are within known proved productive limits of the
subject formation, estimated with reasonable certainty, (c) which conform to
existing completion intervals for existing wells and (d) which will be
developed with a reasonable degree of certainty.

       "Purchaser" is defined in Section 17.3(a).

       "Qualified Long Term Rating" means in respect of any Person, a Person
which has publicly traded debt securities rated either A- or higher by S&P or
A(3) or higher by Moody's.

       "Rate Option" means the Eurodollar Rate or the Alternate Base Rate.

       "Rating Agency" means each of D&P, Moody's and S&P.

       "Rating Level" means the level set forth below that corresponds to the
highest two of three ratings issued from time to time by Moody's, S&P and D&P,
as applicable to Company's senior unsecured long-term debt which is not secured
or supported by a guaranty, letter of credit or other form of credit
enhancement; provided, however, that in the event that a split occurs between
the highest two ratings, then the level corresponding to the lower of the
highest two ratings shall apply:

<TABLE>
<CAPTION>
                       Moody's               S&P                  D&P
                       -------               ---                  ---
    <S>                    <C>               <C>              <C>
    Level I               )-Baa1            )-BBB+             )-BBB+

    Level II                Baa2              BBB                BBB

    Level III               Baa3              BBB-               BBB-

    Level IV               (Baa3             (BBB-              (BBB-
</TABLE>

For example, if the Moody's rating is Baa1, the S&P rating is BBB, and the D&P
rating is BBB-, Level II shall apply.

       For purposes of the foregoing, (i) ")-" means a rating more favorable
than or equal to; "(" means a rating less favorable than; (ii) if ratings for
the Company's senior unsecured long-term debt which is not secured or supported
by a guaranty letter of credit or other form of credit enhancement shall not be
available from two Ratings Agencies, Level IV shall be deemed applicable; (iii)
if determinative ratings shall change (other than as a result of a change in
the rating system used by any applicable Rating Agency) such that a change in
applicable Rating Level would result, such change shall effect a change in
applicable Rating Level as of the day on which it is first announced by the
applicable Rating Agency, and any change in the Applicable Margin shall apply





                                       17
<PAGE>   24
commencing on the effective date of such change and ending on the date
immediately preceding the effective date of the next such change; (iv) if any
of the Rating Agencies shall change its ratings nomenclature prior to the date
all Obligations have been paid and the Commitments cancelled, Company and the
Global Administrative Agent shall negotiate in good faith to amend the
references to specific ratings in this definition to reflect such change, and
pending such amendment, if an appropriate applicable Rating Level is otherwise
not determinable based upon the foregoing grid, the last applicable Rating
Level in effect at the time of such change shall continue to apply.

       "Reference Lenders" means First Chicago and Chase.

       "Regulation D" means Regulation D of the Board of Governors of the
Federal Reserve System from time to time in effect and shall include any
successor or other regulation or official interpretation of said Board of
Governors or any successor Person relating to reserve requirements applicable
to member banks of the Federal Reserve System or any successor Person.

       "Regulation U" means any of Regulations G, T, U or X of the Board of
Governors of the Federal Reserve System from time to time in effect and shall
include any successor or other regulations or official interpretations of said
Board of Governors or any successor Person relating to the extension of credit
for the purpose of purchasing or carrying margin stocks applicable to member
banks of the Federal Reserve System or any successor Person.

       "Release" means a "release", as such term is defined in CERCLA.

       "Replacement Lender" is defined in Section 2.2.

       "Reportable Event" means a reportable event as defined in Section 4043
of ERISA and the regulations issued under such section, with respect to a Plan,
excluding, however, such events as to which the PBGC by regulation waived the
requirement of Section 4043(a) of ERISA that it be notified within 30 days of
the occurrence of such event, provided that a failure to meet the minimum
funding standard of Section 412 of the Code and of Section 302 of ERISA shall
be a Reportable Event regardless of the issuance of any such waivers in
accordance with either Section 4043(a) of ERISA or Section 412(d) of the Code.

       "Required Lenders" means, as of any date of determination, U.S. Lenders
having in the aggregate at least 66-2/3% of the Aggregate Commitment or, if the
Aggregate Commitment has been terminated, U.S. Lenders holding at least 66-2/3%
of the then outstanding principal amount of the Loans.

       "Reserve Requirement" means, with respect to an Interest Period, the
maximum aggregate reserve requirement (including all basic, emergency,
supplemental, marginal and other reserves and taking into account any
transitional adjustments or regulations issued from time to time by the Board
of Governors of the Federal Reserve System) which is then applicable to assets
or liabilities consisting of and including with a maturity equal to that of the
"Eurocurrency Liabilities", as defined in Regulation D, having a term
approximately equal or comparable to such Interest Period.

       "Revolving Advance" means a borrowing hereunder consisting of the
aggregate amount of the several Revolving Loans made by the U.S. Lenders or any
of them to the Company on the same Borrowing Date, at the same Rate Option and,
in the case of Eurodollar Revolving Loans, for the same Interest Period.

       "Revolving Loan" means, with respect to a U.S. Lender, a revolving loan
made by such U.S. Lender pursuant to Sections 2.1 and 3.3 as the result of a
Borrowing Notice from the Company requesting an Advance.

       "Revolving Note" means a promissory note in substantially the form of
Exhibit A-1 hereto (with appropriate insertions and deletions), duly executed
and delivered to the Global Administrative Agent by the Company and payable to
the order of a U.S. Lender in the amount of its Commitment, including any
amendment, modification, renewal or replacement of such promissory note.





                                       18
<PAGE>   25
       "S&P" means Standard & Poor's Ratings Service and any successor thereto
that is a nationally-recognized rating agency.

       "Sale" means any sale, transfer, assignment, lease, conveyance,
exchange, swap or other disposition.

       "Schedules" means Schedules A, 8.8, 11.1 and 11.10 hereto.

       "Single Employer Plan" means a Plan maintained by the Company or any
member of the Controlled Group for employees of the Company or any member of
the Controlled Group.

       "Solvent" means, with respect to any Person at any time, a condition
under which

              (a)    the fair saleable value of such Person's assets is, on the
       date of determination, greater than the total amount of such Person's
       liabilities (including contingent and unliquidated liabilities) at such
       time;

              (b)    such Person is able to pay all of its liabilities as such
       liabilities mature; and

              (c)    such Person does not have unreasonably small capital with
       which to conduct its business.

For purposes of this definition (i) the amount of a Person's contingent or
unliquidated liabilities at any time shall be that amount which, in light of
all the facts and circumstances then existing, represents the amount which can
reasonably be expected to become an actual or matured liability; (ii) the "fair
saleable value" of an asset shall be the amount which may be realized within a
reasonable time either through collection or sale of such asset at its regular
market value; and (iii) the "regular market value" of an asset shall be the
amount which a capable and diligent business person could obtain for such asset
from an interested buyer who is willing to purchase such asset under ordinary
selling conditions.

       "Spot Rate of Exchange" means, on any date, the rate of exchange between
two currencies which is quoted on the Reuters' Screen page BOFC at or about
1:00 p.m. (Chicago time) on that day.

       "Stated Maturity Date" means the maturity date of a Competitive Bid
Advance as provided in Section 3.4(a).

       "Subsidiary" means, with respect to any Person, any other Person more
than 50% of the outstanding voting securities of which shall at the time be
owned or controlled, directly or indirectly, by such Person; provided, that
with respect to the Company, Subsidiaries shall include MW Petroleum, MWJR and
any other Person more than 50% of the outstanding voting securities of which
shall at the time be owned or controlled, directly or indirectly, by the
Company or by one or more Subsidiaries or by the Company and one or more
Subsidiaries; and further provided, that, notwithstanding the foregoing,
Subsidiaries of the Company shall not include Producers Energy and Apache
Series 1996-A Trust, a Delaware business trust, except for the purposes of
Sections 8.10, 8.15, 8.16 and 12.1 (insofar as the representation or warranty
which is breached or shall be false was made pursuant to Sections 8.10, 8.15 or
8.16).

       "Termination Date" means the Original Termination Date, or such other
later date as may result from any extension requested by the Company and
consented to by the U.S. Lenders pursuant to Section 2.2.

       "Transferee" is defined in Section 17.4.

       "Unfunded Liabilities" means, (i) in the case of Single Employer Plans,
the amount (if any) by which the present value of all vested nonforfeitable
benefits under such Plan exceeds the fair market value of all Plan assets
allocable to such benefits, all determined as of the then most recent valuation
date for such Plans, and (ii) in the





                                       19
<PAGE>   26
case of Multiemployer Plans, the withdrawal liability that would be incurred by
the Controlled Group if all members of the Controlled Group completely withdrew
from all Multiemployer Plans.

       "United States" or "U.S." means the United States of America, its fifty
states and the District of Columbia.

       "Unmatured Default" means an event which but for the lapse of time or
the giving of notice, or both, would constitute a Default.

       "U.S. Lenders" means the financial institutions listed on the signature
pages of this Agreement and their respective successors and assigns in
accordance with Section 17.3 (including any commercial lending institution
becoming a party hereto pursuant to an Assignment Agreement) or otherwise by
operation of law.

       "U.S. Loan Documents" means this Agreement, the Notes, the Guaranties,
the Assignment Agreements, the agreement with respect to fees described in
Section 2.4(b), the Intercreditor Agreement and the Indemnity Agreements,
together with all exhibits, schedules and attachments thereto, and all other
agreements, documents, certificates, financing statements and instruments from
time to time executed and delivered pursuant to or in connection with any of
the foregoing.

       "U.S. Subsidiary" means any Subsidiary that is organized under the laws
of the United States.

       1.2.   Use of Defined Terms.  Unless otherwise defined or the context
otherwise requires, terms for which meanings are provided in this Agreement
shall have such meanings when used in each Schedule and Exhibit hereto and in
each Note, Borrowing Notice, Competitive Bid Borrowing Notice,
Continuation/Conversion Notice, U.S. Loan Document, notice and other
communication delivered from time to time in connection with this Agreement or
any other U.S. Loan Document.

       1.3.   Cross References.  Unless otherwise specified, references in this
Agreement and in each other U.S. Loan Document to any Article, Section, Exhibit
or Schedule are references to such Article or Section of or Schedule or Exhibit
to this Agreement or such other U.S. Loan Document, as the case may be, and,
unless otherwise specified, references in any Article, Section or definition to
any clause are references to such clause of such Article, Section or
definition.

       1.4.   Accounting and Financial Determination.  Unless otherwise
specified, all accounting terms used herein or in any other U.S. Loan Document
shall be interpreted, all accounting determinations and computations hereunder
or thereunder, and all financial statements required to be delivered hereunder
or thereunder, shall be prepared in accordance with, the Agreement Accounting
Principles.

       1.5.   Currency References.  Unless otherwise specified herein, all
dollar amounts expressed herein shall refer to U.S. Dollars.  Except as
otherwise herein specified, for purposes of calculating compliance with the
terms of this Agreement and the other U.S. Loan Documents (including for
purposes of calculating compliance with the covenants), any other obligation or
calculation shall be converted to its Equivalent Amount in U.S. Dollars.


                                   ARTICLE II

                                  THE FACILITY

       2.1.   The Facility.

       (a)    Description of Facility.  On the Global Effective Date, all
outstanding 1995 Loans shall be renewed, restated, extended and converted into
(but shall not be deemed to be repaid) Revolving Loans under this Agreement;
provided, however, that from and including the Global Effective Date, the
Eurodollar Spread applicable





                                       20
<PAGE>   27
with respect to such renewed, restated, extended and converted 1995 Loans shall
be determined pursuant to this Agreement.  On the terms and subject to the
conditions set forth in this Agreement (including satisfaction of the
conditions precedent set forth in Article VII), the U.S. Lenders grant to the
Company a revolving credit facility pursuant to which, and upon the terms and
conditions herein set out:

              (i)    each U.S. Lender severally agrees to make Revolving Loans
       to the Company in accordance with this Section and Article III; and

              (ii)   each U.S. Lender may, in its sole discretion, make bids to
       make Competitive Bid Loans to the Company in accordance with this
       Section and Article III.

       (b)    Facility Amount.  In no event may the aggregate principal amount
of all outstanding Loans (including both the Revolving Loans and the
Competitive Bid Loans) exceed the lesser of the Aggregate Commitment or the
Global Borrowing Base and no U.S. Lender shall be obligated to make any Loan
hereunder if, after giving effect to such Loan, the sum of the aggregate
outstanding principal amount of all Borrowing Base Debt would exceed the Global
Borrowing Base; provided that if the Company shall have requested an Advance
the proceeds of which will be used to repay outstanding Borrowing Base Debt and
so long as no Default or Unmatured Default shall have occurred and be
continuing, then, with respect to the calculations set forth in this
subsection, such Advance shall not be included within the amount of outstanding
Loans and outstanding Borrowing Base Debt until 5:00 p.m. (Central time) on the
day of such Advance; provided, further, that the continuation of any Floating
Rate Loan or any Eurodollar Loan or the conversion of any Eurodollar Loan into
a Floating Rate Loan or, except if a Commercial Paper Backup Exclusion Event
has occurred and is continuing, the borrowing of a Loan which is used
exclusively to repay Commercial Paper Obligations shall not be deemed to be a
borrowing of a Loan for purposes of this subsection or an Advance during the
applicable period provided in Section 4.1(a) for the Company to make a
mandatory payments because of a Debt Limit Excession; provided, further, that,
in the case of a continuation of a Eurodollar Loan during a continuing Debt
Limit Excession, such continuation shall only be permitted for a period ending
on or prior to the date by which the Company is required to make a mandatory
prepayment because of a Debt Limit Excession provided in Section 4.1(a).

       (c)    All Loans.  Subject to the terms and conditions of this
Agreement, the Company may borrow, repay and reborrow all Loans made under this
Agreement at any time prior to the Termination Date.  The obligations of the
U.S. Lenders to make Loans shall cease on the Termination Date, and any and all
Loans outstanding on such date shall be due and payable on such date.

       (d)    Revolving Advances.  Each Revolving Advance hereunder shall
consist of borrowings made from the several U.S. Lenders ratably in proportion
to the amounts of their respective Commitments.  The aggregate outstanding
amount of Competitive Bid Loans shall reduce each U.S. Lender's obligation to
make Loans in an amount not to exceed the lesser of the Aggregate Commitment or
the Global Borrowing Base (provided that the sum of the aggregate outstanding
principal amount of all Borrowing Base Debt shall not exceed the Global
Borrowing Base except as permitted in Section 2.1(b)), ratably in the
proportion such U.S. Lender's Commitment bears to the Aggregate Commitment
regardless of which U.S. Lender or U.S. Lenders makes such Competitive Bid
Loans.

       (e)    Competitive Bid Loans.  In addition to Revolving Loans pursuant
to Section 2.1(d), but subject to the terms and conditions of this Agreement
(including, without limitation, the limitation set forth in Section 2.1(b) as
to the maximum aggregate principal amount of all outstanding Loans hereunder),
the Company may, as set forth in this Section 2.1(e) and Article III, at any
time request the U.S. Lenders, prior to the Termination Date, to make offers to
make Competitive Bid Advances to the Company.  Each U.S. Lender may, but shall
have no obligation to, make such offers and the Company may, but shall have no
obligation to, accept such offers.





                                       21
<PAGE>   28
       2.2.   Extension of Termination Date and of Aggregate Commitment.

       (a)    Subject to the other provisions of this Agreement, the Aggregate
Commitment shall be effective for an initial period from the Global Effective
Date to the Original Termination Date; provided that the Termination Date, and
concomitantly the Aggregate Commitment, may be extended for successive one year
periods expiring on the date which is one (1) year from the then scheduled
Termination Date.  If the Company shall request in an Annual Certificate of
Extension delivered to the Global Administrative Agent concurrently with
delivery of the Approved Engineers' Report delivered prior to the then
scheduled Termination Date pursuant to Section 9.1(d) that the Termination Date
be extended for one year from the then scheduled Termination Date, then the
Global Administrative Agent shall promptly notify each U.S. Lender of such
request and each U.S. Lender shall notify the Global Administrative Agent, no
later than the next date by which each U.S. Lender is required, pursuant to
Section 2.3(a), to approve or disapprove the Engineering Banks' determination
of the Global Borrowing Base, and whether such U.S. Lender, in the exercise of
its sole discretion, will extend the Termination Date for such one year period.
Any U.S. Lender which shall not timely notify the Global Administrative Agent
whether it will extend the Termination Date shall be deemed to not have agreed
to extend the Termination Date.  No U.S. Lender shall have any obligation
whatsoever to agree to extend the Termination Date.  Any agreement to extend
the Termination Date by any U.S. Lender shall be irrevocable, except as
provided in Section 2.2(c).

       (b)    If all the U.S. Lenders notify the Global Administrative Agent
pursuant to clause (a) of this Section 2.2 of their agreement to extend the
Termination Date (such U.S. Lenders agreeing to extend the Termination Date
herein called the "Accepting Lenders"), then the Global Administrative Agent
shall so notify each U.S. Lender and the Company, and such extension shall be
effective without other or further action by any party hereto for such
additional one year period.

       (c)    If U.S. Lenders constituting at least the Required Lenders
approve the extension of the then scheduled Termination Date and if one or more
of the U.S. Lenders shall notify, or be deemed to notify, the Global
Administrative Agent pursuant to clause (a) of this Section 2.2 that they will
not extend the then scheduled Termination Date (such U.S. Lenders herein called
the "Declining Lenders"), then (A) the Global Administrative Agent shall
promptly so notify the Company and the Accepting Lenders, (B) the Accepting
Lenders shall, upon the Company's election to extend the then scheduled
Termination Date in accordance with clause (i) or (ii) below, extend the then
scheduled Termination Date and (C) the Company shall pursuant to a notice
delivered to the Global Administrative Agent, the Accepting Lenders and the
Declining Lenders, no later than the tenth day following the date by which each
U.S. Lender is required, pursuant to Section 2.2(a), to approve or disapprove
the requested extension of the Aggregate Commitment, either:

              (i)    elect to extend the Termination Date with respect to the
       Accepting Lenders and direct the Declining Lenders to terminate their
       Commitments, which termination shall become effective on the date which
       would have been the Termination Date except for the operation of this
       Section 2.2.  On such date, (x) the Company shall deliver a notice of
       the effectiveness of such termination to the Declining Lenders with a
       copy to the Global Administrative Agent and (y) the Company shall pay in
       full in immediately available funds all Obligations of the Company owing
       to the Declining Lenders and (z) upon the occurrence of the events set
       forth in clauses (x) and (y), the Declining Lenders shall each cease to
       be a U.S. Lender hereunder for all purposes, other than for purposes of
       Article VI, Section 14.7 and the Indemnity Agreement, and shall cease to
       have any obligations or any Commitment hereunder, other than to the
       Agents pursuant to Section 15.8, and the Global Administrative Agent
       shall promptly notify the Accepting Lenders and the Company of the new
       Aggregate Commitment; or

              (ii)   elect to extend the Termination Date with respect to the
       Accepting Lenders and, prior to or no later than the then scheduled
       Termination Date, (A) to replace one or more of the Declining Lender or
       Declining Lenders with another lender or lenders reasonably acceptable
       to the Global Administrative Agent (such lenders herein called the
       "Replacement Lenders") and (B) the Company shall pay in full in
       immediately available funds all Obligations of the Company owing to the
       Declining Lenders which are not





                                       22
<PAGE>   29
       being replaced, as provided in clause (i) above; provided that (x) the
       Replacement Lender or Replacement Lenders shall purchase, and the
       Declining Lender or Declining Lenders shall sell, the Notes of the
       Declining Lender or Declining Lenders being replaced and the Declining
       Lender's or Declining Lenders' rights hereunder without recourse or
       expense to, or warranty by, such Declining Lender or Declining Lenders
       being replaced for a purchase price equal to the aggregate outstanding
       principal amount of the Note or Notes payable to such Declining Lender
       or Declining Lenders plus any accrued but unpaid interest on such Note
       or Notes and accrued but unpaid fees in respect of such Declining
       Lender's or Declining Lenders' Loans and Commitments hereunder, and (y)
       all obligations of the Company owing under or in connection with this
       Agreement to the Declining Lender or Declining Lenders being replaced
       (including, without limitation, such increased costs, breakage fees
       payable under Section 6.3 and all other costs and expenses payable to
       each such Declining Lender) shall be paid in full in immediately
       available funds to such Declining Lender or Declining Lenders
       concurrently with such replacement, and (z) upon the payment of such
       amounts referred to in clauses (x) and (y), the Replacement Lender or
       Replacement Lenders shall each constitute a U.S. Lender hereunder and
       the Declining Lender or Declining Lenders being so replaced shall no
       longer constitute a U.S. Lender (other than for purposes of Article VI,
       Section 14.7 and the Indemnity Agreement), and shall no longer have any
       obligations hereunder, other than to the Agents pursuant to Section
       15.8; or

              (iii)  elect to revoke and cancel the extension request in such
       Annual Certificate of Extension by giving notice of such revocation and
       cancellation to the Global Administrative Agent (which shall promptly
       notify the U.S. Lenders thereof) no later than the tenth day following
       the date by which each U.S. Lender is required, pursuant to Section
       2.2(a), to approve or disapprove the requested extension of the
       Termination Date, and concomitantly the Aggregate Commitment.

       If the Company fails to timely provide the election notice referred to
in this clause(c), the Company shall be deemed to have revoked and cancelled
the extension request in the Annual Certificate of Extension and to have
elected not to extend the Termination Date, and the concomitant Aggregate
Commitment, with respect to the Accepting Lenders, and, on the then scheduled
Termination Date, the Company shall repay in full all Obligations under the
U.S. Loan Documents.

       2.3.   Global Borrowing Base.

       (a)    Initial Global Borrowing Base; Scheduled Semi-Annual and
Discretionary Determinations of the Global Borrowing Base; Procedures for
Determination of the Global Borrowing Base.  The initial Global Borrowing Base
shall be $947,000,000.  The Global Borrowing Base shall be redetermined upon
receipt by the Global Administrative Agent, the Engineering Banks, the
Australian Administrative Agent (on its own behalf and on behalf of the
Australian Lenders), the Canadian Administrative Agent (on its own behalf and
on behalf of the Canadian Lenders), and the U.S. Lenders of the relevant
Approved Engineers' Report or Company's Engineers' Report, as the case may be,
pursuant to Sections 2.3(b), (d) or (e) or 9.1(d), (e) or (f).  The
redeterminations of the Global Borrowing Base described in the preceding
sentence shall be made as follows:  The Engineering Banks shall make a
determination of the Global Borrowing Base in accordance with the criteria
described in clause (c) of this Section 2.3, within thirty (30) days after
receipt of the Approved Engineers' Report or the Company's Engineers' Report,
as the case may be.  Within ten (10) days following such determination, the
Global Administrative Agent shall notify the U.S. Lenders, the Australian
Administrative Agent (for its own behalf and on behalf of the Australian
Lenders) and the Canadian Administrative Agent (for its own behalf and on
behalf of the Canadian Lenders) in writing of such determination of the amount
of the proposed Global Borrowing Base.  Each of the Combined Lenders shall
notify the Global Administrative Agent in writing, by telex or by facsimile
transmission whether it approves or disapproves of any such determination
within ten (10) Business Days of its receipt of such notice from the Global
Administrative Agent; provided that any of the Combined Lenders which do not so
notify the Global Administrative Agent shall be deemed to have approved of such
determination.  Upon the approval (or deemed approval) by the Combined Required
Lenders, such determination shall thereafter be the Global Borrowing Base and
the Global Administrative Agent shall within five (5) days of such approval
notify the Company in writing





                                       23
<PAGE>   30
of such redetermined Global Borrowing Base.  The Global Administrative Agent
shall promptly notify the Company, the Australian Administrative Agent, the
Canadian Administrative Agent and the Combined Lenders of any change in the
Global Borrowing Base.  Additionally, the Global Borrowing Base may or will be
reduced from time to time as provided in Sections 2.3(d), (e) and (f) and
Section 11.3.

       (b)    Determination of Global Borrowing Base at Request of Company.
The Company may request one Global Borrowing Base determination between any
regularly scheduled semi-annual redeterminations of the Global Borrowing Base
by delivery to the Global Administrative Agent, which will then notify the
Engineering Banks, the Australian Administrative Agent (for its own behalf and
on behalf of the Australian Lenders), the Canadian Administrative Agent (for
its own behalf and on behalf of the Canadian Lenders) and the U.S. Lenders, of
a written request for such determination.  In connection with any such
determinations, the Company shall deliver to the Global Administrative Agent,
which will then deliver to the Engineering Banks, the Australian Administrative
Agent (for its own behalf and on behalf of the Australian Lenders), the
Canadian Administrative Agent (for its own behalf and on behalf of the Canadian
Lenders) and the U.S. Lenders, such reports and information concerning the
Properties (which may include in the Engineering Banks' sole discretion an
Approved Engineers' Report or a Company's Engineers' Report as of such date) as
the Engineering Banks shall deem appropriate in its or their sole discretion.
In addition, the Company may request, at its sole cost and expense, a Global
Borrowing Base determination upon the payment or conversion of any Excluded
Principal Debt by delivering to the Global Administrative Agent, which will
then notify the Engineering Banks, the Australian Administrative Agent (for its
own behalf and on behalf of the Australian Lenders), the Canadian
Administrative Agent (for its own behalf and on behalf of the Canadian Lenders)
and the U.S. Lenders, a written request for such determination, and such Global
Borrowing Base determination shall not affect the Company's right to request
and receive one Global Borrowing Base determination between semi-annual
redeterminations as provided in Section 2.3(b).

       (c)    Criteria for Determination of the Global Borrowing Base.  Each
determination by the Engineering Banks and the approval by the Combined
Required Lenders of the Global Borrowing Base attributable to all the
Properties owned by the Company or its Subsidiaries, including Properties owned
through partnerships (but not to exceed in each case an undivided share of such
Properties equal to the Company's ownership share of such partnerships), shall
be made by them in the exercise of their respective sole discretion based on
their then current engineering criteria and oil and gas lending criteria, all
as determined using the then most recently received Approved Engineers' Report
or Company's Engineers' Report, as the case may be, and, subject to the
approval of the Combined Required Lenders to the extent set forth in clause (a)
of this Section 2.3, shall be conclusive and binding in the absence of manifest
error.

       (d)    Redeterminations of Global Borrowing Base Upon Material Adverse
Effect.  In the event of: (i) the assertion or filing of any adverse claim,
defect or encumbrance affecting or purporting to affect the title of the
Company or any Subsidiary to any Property; or (ii) any blow out or other
casualty affecting any Property or the production of oil and gas therefrom; or
(iii) any withholding after one hundred twenty (120) days following
commencement of production by any Person of sums due the Company or any
Subsidiary in respect of Hydrocarbons produced, which withholding results from
an allegation or claim affecting such Person's rights to such payment; which
results in a Material Adverse Effect, the Engineering Banks shall have the
right in their sole discretion to reduce the Global Borrowing Base, either
temporarily or permanently, by the amount included therein with respect to the
interest as to which a claim, defect, encumbrance, withholding or dispute has
arisen or exists or a casualty has occurred.  The failure of the Engineering
Banks to make any such reduction upon receipt of any notice with respect to any
such claim, dispute or casualty shall not preclude their later election to so
reduce the Global Borrowing Base.

       (e)    Redetermination of Global Borrowing Base Upon Material Changes.
In the event that (i) "material changes" occur between the dates of
determination of the Global Borrowing Base (A) in oil and/or gas prices, (B) in
taxes, (C) in anticipated rates or amounts of production from any Properties
included in the Global Borrowing Base, (D) in the Company's or any
Subsidiary's, as the case may be, title or purported title to the Properties,
(E) in operating, lease, royalty and other arrangements relating to the
Properties, (F) in operating costs with respect to





                                       24
<PAGE>   31
the Properties, or (G) in the Company's anticipated revenues as a result of the
Company or any of its Subsidiaries' granting a Lien upon any of its Properties
securing Indebtedness permitted by Section 11.1(f) or incurring Indebtedness
permitted by Section 11.1(f) or (ii) any payment of Excluded Principal Debt not
permitted pursuant to Section 11.6 is made by the Company or any of its
Subsidiaries, or (iii) a Downgrade Condition has occurred and is continuing,
then in any such event the Engineering Banks may, in their sole discretion,
redetermine the Global Borrowing Base in accordance with the standards set
forth in Section 2.3(c) prior to the receipt of either a new Approved
Engineers' Report or a new Company's Engineers' Report by adjusting the Global
Borrowing Base to reflect the changes which have occurred.  For the purposes
hereof, "material changes" shall be deemed to have occurred for purposes of
this Section 2.3(e) when such changes would in the aggregate result in a
material decrease in the Global Borrowing Base as determined by the Engineering
Banks in their sole and absolute discretion.  In the event of a redetermination
of Global Borrowing Base as set forth in the preceding sentence, the Company
may request, at its sole cost and expense, a subsequent Global Borrowing Base
determination by delivering to the Global Administrative Agent, which will then
notify the Engineering Banks, the Australian Administrative Agent (for its own
behalf and on behalf of the Australian Lenders), the Canadian Administrative
Agent (for its own behalf and on behalf of the Canadian Lenders) and the U.S.
Lenders, a written request for such determination, and such Global Borrowing
Base determination shall not affect the Company's right to request and receive
one Global Borrowing Base determination between semi-annual redeterminations as
provided in Section 2.3(b).

       (f)    Reduction of Global Borrowing Base Upon Sales of Certain
Properties.  Upon consummation of the Sale of any Property or any Borrowing
Base Subsidiary constituting (and designated by the Company in a notice to the
Global Administrative Agent as constituting) a permitted Sale under clause
(iii) of Section 11.3, the Global Borrowing Base shall be reduced on account of
such Sale by an amount equal to the proceeds of such Sale net of reasonable
incidental brokerage and legal costs actually paid to third parties, net of
taxes associated with such Sale payable in cash concurrently with the
consummation of such Sale, and net of federal and state income taxes estimated
to be due in respect of such Sale by the Company acting reasonably and in good
faith, provided reserves for such taxes are established by the Company; and
provided, further, that, if (i) the Company shall provide the Global
Administrative Agent with the allocation between Properties and other assets
owned by such Borrowing Base Subsidiary for tax purposes of the actual purchase
price and proceeds from the Sale of a Borrowing Base Subsidiary and (ii) the
Global Administrative Agent and the Engineering Banks reasonably determine, in
their sole discretion, that such allocation is acceptable, then the proceeds of
such Sale of a Borrowing Base Subsidiary shall be deemed to be the amount set
forth in the allocation for tax purposes for the sale of the Properties of such
Borrowing Base Subsidiary.  Upon the consummation of the Sale of any Property
or any Borrowing Base Subsidiary constituting a permitted Sale under clause
(iv) of Section 11.3, the Global Borrowing Base shall be reduced by an amount
required under Section 11.3 on account of such Sale.

       (g)    Title Warranty.  Delivery to the U.S. Lenders of any Approved
Engineers' Report or Company's Engineers' Report shall be deemed to be a
reaffirmation as of the date of delivery of such report of the representation
and warranties in Section 8.14.

       2.4.   Facility Fee; Other Fees.

       (a)    Facility Fee.  The Company agrees to pay to the Global
Administrative Agent for the account of each U.S. Lender a facility fee for the
period from (and including) the date hereof to the Termination Date, at the
applicable rates per annum set forth in Schedule A based on the applicable
Rating Level on such U.S. Lender's ratable portion of the Aggregate Commitment
as in effect from time to time; provided, however, that a reduction in a U.S.
Lender's portion of the Aggregate Commitment pursuant to Section 2.1(d) shall
not reduce such U.S. Lender's ratable portion of the Aggregate Commitment for
the purposes of this Section 2.4(a).

Facility fees accruing pursuant to this Section 2.4(a) shall be payable in
arrears on each Payment Date hereafter and on the Termination Date.  The
effective date for any change in the Facility Fees accruing pursuant to this
Section 2.4(a) shall be any date on which a change in the applicable Rating
Level occurs.  In addition to the





                                       25
<PAGE>   32
foregoing, the Company agrees to pay all fees accruing prior to date hereof
with respect to each U.S. Lender's commitments under the March 1995 Agreement.

       (b)    Agents' Fees.  The Company shall pay to each Agent for its own
respective account such fees in connection with this Agreement as previously
have been agreed in writings between the Company and any such Agent (as such
writings may hereafter be amended, supplemented, restated or otherwise modified
and in effect).


                                  ARTICLE III

                    BORROWING; SELECTING RATE OPTIONS; ETC.

       3.1.   Method of Borrowing.

       (a)    Revolving Loans.  Not later than 2:00 p.m. (Chicago time) on each
Borrowing Date for Revolving Loans, each U.S. Lender shall make available its
Loan or Loans, in funds immediately available in Chicago, to the Global
Administrative Agent at its address specified pursuant to Article XVIII.  The
Global Administrative Agent will make the funds so received from the U.S.
Lenders with respect to Revolving Loans available to the Company at the Global
Administrative Agent's aforesaid address.

       (b)    Competitive Bid Loans.  Not later than noon (Chicago time) on the
Borrowing Date specified for each Competitive Bid Loan, each U.S. Lender whose
Competitive Bid Quote in respect thereof the Company accepted pursuant to
Section 3.4(e) shall make available its Competitive Bid Loan, in funds
immediately available in Chicago, to the Global Administrative Agent at its
address specified pursuant to Article XVIII.  The Global Administrative Agent
will make the funds so received from the U.S. Lenders with respect to
Competitive Bid Loans available to the Company at the Global Administrative
Agent's aforesaid address.

       3.2.   Maximum Interest.  It is the intention of the parties hereto to
conform strictly to applicable interest, usury and criminal laws and, anything
herein to the contrary notwithstanding, the obligations of the Company to a
U.S. Lender or any Agent under this Agreement shall be subject to the
limitation that payments of interest shall not be required to the extent that
receipt thereof would be contrary to provisions of law applicable to such U.S.
Lender or Agent limiting rates of interest which may be charged or collected by
such U.S. Lender or Agent.  Accordingly, if the transactions contemplated
hereby would be illegal, unenforceable, usurious or criminal under laws
applicable to a U.S. Lender or Agent (including the laws of any jurisdiction
whose laws may be mandatorily applicable to such U.S. Lender or Agent
notwithstanding anything to the contrary in this Agreement or any other U.S.
Loan Document but subject to Section 3.8 hereof) then, in that event,
notwithstanding anything to the contrary in this Agreement or any other U.S.
Loan Document, it is agreed as follows:

              (a)    the provisions of this Section 3.2 shall govern and
       control;

              (b)    the aggregate of all consideration which constitutes
       interest under applicable law that is contracted for, taken, reserved,
       charged or received under this Agreement, or under any of the other
       aforesaid agreements or otherwise in connection with this Agreement by
       such U.S. Lender or Agent shall under no circumstances exceed the
       maximum amount of interest allowed by applicable law (such maximum
       lawful interest rate, if any, with respect to each U.S. Lender and the
       Agent herein called the "Highest Lawful Rate"), and any excess shall be
       cancelled automatically and if theretofore paid shall be credited to the
       Company by such U.S. Lender or Agent (or, if such consideration shall
       have been paid in full, such excess refunded to the Company);

              (c)    all sums paid, or agreed to be paid, to such U.S. Lender
       or Agent for the use, forbearance and detention of the indebtedness of
       the Company to such U.S. Lender or Agent hereunder or under any U.S.
       Loan Document shall, to the extent permitted by laws applicable to such
       U.S. Lender





                                       26
<PAGE>   33
       or Agent, as the case may be, be amortized, prorated, allocated and
       spread throughout the full term of such indebtedness until payment in
       full so that the actual rate of interest is uniform throughout the full
       term thereof;

              (d)    if at any time the interest provided pursuant to this
       Section 3.2 or any other clause of this Agreement or any other U.S. Loan
       Document, together with any other fees or compensation payable pursuant
       to this Agreement or any other U.S. Loan Document and deemed interest
       under laws applicable to such U.S. Lender or Agent, exceeds that amount
       which would have accrued at the Highest Lawful Rate, the amount of
       interest and any such fees or compensation to accrue to such U.S. Lender
       or Agent pursuant to this Agreement shall be limited, notwithstanding
       anything to the contrary in this Agreement or any other U.S. Loan
       Document, to that amount which would have accrued at the Highest Lawful
       Rate, but any subsequent reductions, as applicable, shall not reduce the
       interest to accrue to such U.S. Lender or Agent pursuant to this
       Agreement below the Highest Lawful Rate until the total amount of
       interest accrued pursuant to this Agreement or such other U.S. Loan
       Document, as the case may be, and such fees or compensation deemed to be
       interest equals the amount of interest which would have accrued to such
       U.S. Lender or Agent if a varying rate per annum equal to the interest
       provided pursuant to any other relevant Section hereof (other than this
       Section 3.2), as applicable, had at all times been in effect, plus the
       amount of fees which would have been received but for the effect of this
       Section 3.2; and

              (e)    with the intent that the rate of interest herein shall at
       all times be lawful, and if the receipt of any funds owing hereunder or
       under any other agreement related hereto (including any of the other
       U.S. Loan Documents) by such U.S. Lender or Agent would cause such U.S.
       Lender to charge the Company a criminal rate of interest, the U.S.
       Lenders and the Agents agree that they will not require the payment or
       receipt thereof or a portion thereof which would cause a criminal rate
       of interest to be charged by such U.S. Lender or Agent, as applicable,
       and if received such affected U.S. Lender or Agent will return such
       funds to the Company so that the rate of interest paid by the Company
       shall not exceed a criminal rate of interest from the date this
       Agreement was entered into.

       3.3.   Method of Selecting Rate Options and Interest Periods for
Revolving Loans.  The Company shall select the Rate Option and Interest Period
applicable to each Revolving Advance from time to time.  The Company shall give
the Global Administrative Agent irrevocable notice (a "Borrowing Notice") not
later than (a) noon (Chicago time) on the Borrowing Date of each Floating Rate
Revolving Advance, and (b) noon (Chicago time) at least three (3) Business Days
before the Borrowing Date for each Eurodollar Revolving Advance, specifying:

              (i)    that the Borrowing Notice is delivered under this
       Agreement,

              (ii)   the Borrowing Date, which shall be a Business Day, of such
       Revolving Advance,

              (iii)  the aggregate amount of such Revolving Advance,

              (iv)   the Rate Option selected for such Revolving Advance, and

              (v)    in the case of each Eurodollar Revolving Advance, the
       Interest Period applicable thereto.

Each Eurodollar Revolving Advance shall bear interest from and including the
first day of the Interest Period applicable thereto to (but not including) the
last day of such Interest Period at the interest rate determined from time to
time as applicable to such Eurodollar Revolving Advance.  The Company shall
select Interest Periods with respect to Eurodollar Revolving Advances so that
it is not necessary to pay a Eurodollar Revolving Advance prior to the last day
of the applicable Interest Period in order to make the mandatory repayment on
the Termination Date.





                                       27
<PAGE>   34
       3.4.   Competitive Bid Loans.

       (a)    Competitive Bid Quote Request.  When the Company wishes to
request offers to make Competitive Bid Loans under this Agreement, it shall
transmit to the Global Administrative Agent by telex or telecopy a Competitive
Bid Quote Request substantially in the form of Exhibit E hereto so as to be
received no later than (i) 11:00 a.m. (Chicago time) at least four (4) Business
Days prior to the Borrowing Date proposed therein, in the case of a Eurodollar
Auction or (ii) 9:00 a.m. (Chicago time) at least one (1) Business Day prior to
the Borrowing Date proposed therein, in the case of a Floating Rate Auction
specifying:

              (i)    the proposed Borrowing Date, which shall be a Business
       Day, for the proposed Competitive Bid Advance;

              (ii)   the aggregate principal amount of such Competitive Bid
       Advance;

              (iii)  whether the Competitive Bid Quotes requested are to set
       forth a Eurodollar Bid Rate or a Floating Bid Rate, or both;

              (iv)   in the case of each Floating Rate Auction, the maturity
       date (relative to each Competitive Bid Loan, its "Stated Maturity Date")
       for the proposed Competitive Bid Advance (which Stated Maturity Date may
       not be earlier than the date occurring seven (7) days after the proposed
       Borrowing Date of such Competitive Bid Advance or later than the earlier
       of (x) the date occurring 185 days after the proposed Borrowing Date of
       such Competitive Bid Advance and (y) the Termination Date); and

              (v)    in the case of each Eurodollar Bid Rate Advance, the
       Interest Period applicable thereto (which may not end after the
       Termination Date); provided that the final day of the Interest Period
       applicable to each Eurodollar Bid Rate Loan shall be the Stated Maturity
       Date thereof.

       The Company may request offers to make Competitive Bid Loans for more
than one Interest Period in a single Competitive Bid Quote Request.  No
Competitive Bid Quote Request shall be given within 5 Business Days (or such
other number of days as the Company and the Global Administrative Agent may
agree) of any other Competitive Bid Quote Request.  A Competitive Bid Quote
Request that does not conform substantially to the format of Exhibit E hereto
shall be rejected, and the Global Administrative Agent shall promptly notify
the Company of such rejection by telex or telecopy.

       (b)    Invitation for Competitive Bid Quotes.  Promptly and in any event
before the close of business on the same Business Day of receipt of a
Competitive Bid Quote Request that is not rejected pursuant to Section 3.4(a),
the Global Administrative Agent shall send to each of the U.S. Lenders by telex
or telecopy an Invitation for Competitive Bid Quotes substantially in the form
of Exhibit H hereto, which shall constitute an invitation by the Company to
each U.S. Lender to submit Competitive Bid Quotes offering to make the
Competitive Bid Loans to which such Competitive Bid Quote Request relates in
accordance with this Section 3.4; provided that the Global Administrative Agent
shall not be required to send an Invitation for Competitive Bid Quotes to any
U.S. Lender that has failed to submit a Competitive Bid Quote after each of the
last three Invitations for Competitive Bid Quotes sent to such U.S. Lender
unless the Company or such U.S. Lender has given notice to the Global
Administrative Agent specifically referring to such Invitation for Competitive
Bid Quotes and requesting that this proviso not apply to such Invitation for
Competitive Bid Quotes, in which case this proviso automatically shall not
apply to such Invitation for Competitive Bid Quotes.

       (c)    Submission and Contents of Competitive Bid Quotes.

       (i)    Each U.S. Lender may, in its sole discretion, submit a
              Competitive Bid Quote containing an offer or offers to make
              Competitive Bid Loans in response to any Invitation for
              Competitive Bid Quotes.  Each Competitive Bid Quote must comply
              with the requirements of this Section 3.4(c)





                                       28
<PAGE>   35
              and must be submitted to the Global Administrative Agent by telex
              or telecopy at its offices specified pursuant to Article XVIII
              not later than (A) 11:00 a.m. (Chicago time) at least three (3)
              Business Days prior to the proposed Borrowing Date, in the case
              of a Eurodollar Auction, or (B) 9:00 a.m. (Chicago time) on the
              proposed Borrowing Date, in the case of a Floating Rate Auction
              (or, in either case upon reasonable prior notice to the U.S.
              Lenders, such other time and date as the Company and the Global
              Administrative Agent may agree); provided that Competitive Bid
              Quotes submitted by First Chicago may only be submitted if the
              Global Administrative Agent or First Chicago notifies the Company
              of the terms of the offer or offers contained therein not later
              than 15 minutes prior to the latest time at which the relevant
              Competitive Bid Quotes must be submitted by the other U.S.
              Lenders.  Subject to Articles VII and XII, any Competitive Bid
              Quote so made shall be irrevocable except with the written
              consent of the Global Administrative Agent given on the
              instructions of the Company.

       (ii)   Each Competitive Bid Quote shall be in substantially the form of
              Exhibit K hereto and shall in any case specify:

              (A)    the proposed Borrowing Date, which shall be the same as
       that set forth in the applicable Invitation for Competitive Bid Quotes;

              (B)    the Stated Maturity Date and the principal amount of the
       Competitive Bid Loan for which each such offer is being made, which
       principal amount (1) may be greater than, less than or equal to the
       Commitment of the quoting U.S. Lender, (2) must be at least $5,000,000
       and an integral multiple of $1,000,000, and (3) may not exceed the
       principal amount of Competitive Bid Loans for which offers were
       requested;

              (C)    the Competitive Bid Margin offered for each such
       Competitive Bid Loan;

              (D)    the minimum amount, if any, of the Competitive Bid Loan
       which may be accepted by the Company; and

              (E)    the identity of the quoting U.S. Lender.

       (iii)  The Global Administrative Agent shall reject any Competitive Bid
              Quote that:

              (A)    is not substantially in the form of Exhibit K hereto or
       does not specify all of the information required by Section 3.4(c)(ii);

              (B)    contains qualifying, conditional or similar language,
       other than any such language contained in Exhibit K hereto;

              (C)    proposes terms other than or in addition to those set
       forth in the applicable Invitation for Competitive Bid Quotes; or

              (D)    arrives after the time set forth in Section 3.4(c)(i).

       If any Competitive Bid Quote shall be rejected pursuant to this Section
3.4(c)(iii), then the Global Administrative Agent shall notify the relevant
U.S. Lender of such rejection as soon as practical.

       (d)    Notice to Company.  The Global Administrative Agent shall
promptly notify the Company of the terms (i) of each Competitive Bid Quote
submitted by a U.S. Lender that is in accordance with Section 3.4(c) and (ii)
of any Competitive Bid Quote that amends, modifies or is otherwise inconsistent
with a previous Competitive Bid Quote submitted by such U.S.  Lender with
respect to the same Competitive Bid Quote Request.  Any such





                                       29
<PAGE>   36
subsequent Competitive Bid Quote shall be disregarded by the Global
Administrative Agent unless such subsequent Competitive Bid Quote specifically
states that it is submitted solely to correct a manifest error in such former
Competitive Bid Quote.  The Global Administrative Agent's notice to the Company
shall specify the aggregate principal amount of Competitive Bid Loans for which
offers have been received for each Interest Period or Stated Maturity Date
specified in the related Competitive Bid Quote Request and the respective
principal amounts and Eurodollar Bid Rates or Floating Bid Rates, as the case
may be, so offered.

       (e)    Acceptance and Notice by Company.  Not later than (i) noon
(Chicago time) at least three (3) Business Days prior to the proposed Borrowing
Date, in the case of a Eurodollar Auction or (ii) 10:00 a.m. (Chicago time) on
the proposed Borrowing Date, in the case of a Floating Rate Auction (or, in
either case upon reasonable prior notice to the U.S. Lenders, such other time
and date as the Company and the Global Administrative Agent may agree), the
Company shall notify the Global Administrative Agent of its acceptance or
rejection of the offers so notified to it pursuant to Section 3.4(d); provided,
however, that the failure by the Company to give such notice to the Global
Administrative Agent shall be deemed to be a rejection of all such offers.  In
the case of acceptance, such notice (a "Competitive Bid Borrowing Notice")
shall specify the aggregate principal amount and the Interest Period and Stated
Maturity Date of each offer that is accepted.  The Company may accept any
Competitive Bid Quote in whole or in part (subject to the terms of Section
3.4(c)(ii)(D)); provided that:

              (i)    the aggregate principal amount of each Competitive Bid
       Advance may not exceed the applicable amount set forth in the related
       Competitive Bid Quote Request;

              (ii)   acceptance of offers may only be made on the basis of
       ascending Eurodollar Bid Rates or Floating Bid Rates, as the case may
       be; and

              (iii)  the Company may not accept any offer that is described in
       Section 3.4(c)(iii) or that otherwise fails to comply with the
       requirements of this Agreement.

       (f)    Allocation by Global Administrative Agent.  If offers are made by
two or more U.S. Lenders with the same Eurodollar Bid Rates or Floating Bid
Rates, as the case may be, for a greater aggregate principal amount than the
amount in respect of which offers are accepted for the related Interest Period,
the principal amount of Competitive Bid Loans in respect of which such offers
are accepted shall be allocated by the Global Administrative Agent among such
U.S. Lenders as nearly as possible (in such multiples, not greater than
$1,000,000, as the Global Administrative Agent may deem appropriate) in
proportion to the aggregate principal amount of such offers; provided, however,
that no U.S. Lender shall be allocated a portion of any Competitive Bid Advance
which is less than the minimum amount which such U.S. Lender has indicated that
it is willing to accept.  Allocations by the Global Administrative Agent of the
amounts of Competitive Bid Loans shall be conclusive in the absence of manifest
error.  The Global Administrative Agent shall promptly, but in any event on the
same Business Day, notify each U.S. Lender of its receipt of a Competitive Bid
Borrowing Notice and the aggregate principal amount of such Competitive Bid
Advance allocated to each participating U.S. Lender.

       3.5.   Minimum Amount of Each Advance.  Each requested Advance shall be
in the minimum amount of $5,000,000 (and in multiples of $1,000,000 if in
excess thereof); provided, however, that any Floating Bid Rate Advance and any
Floating Rate Revolving Advance may be in the amount of the difference between
(i) the Global Borrowing Base minus (ii) the aggregate principal amount of
Borrowing Base Debt.

       3.6.   Continuation and Conversion Elections.  By providing a
Continuation/Conversion Notice to the Global Administrative Agent on or before
noon (Chicago time), in the case of a Eurodollar Revolving Loan, or 10:00 a.m.
(Chicago time), in the case of a Floating Rate Revolving Loan, on a Business
Day, the Company may from time to time irrevocably elect, on, in the case of a
Eurodollar Revolving Loan, not less than three nor more than five, and in the
case of a Floating Rate Revolving Loan not less than one or more than three,
Business Days' notice, that all, or any portion in an aggregate minimum amount
of $5,000,000 and an integral multiple of $1,000,000 or the remaining balance
of any Revolving Loans be, in the case of Floating Rate Revolving Loans
converted into Eurodollar Revolving Loans or, in the





                                       30
<PAGE>   37
case of Eurodollar Revolving Loans converted into Floating Rate Revolving Loans
or continued as Eurodollar Revolving Loans (in the absence of delivery of a
Continuation/Conversion Notice with respect to any Eurodollar Revolving Loan at
least three Business Days before the last day of the then current Interest
Period with respect thereto, such Eurodollar Revolving Loan shall, on such last
day, automatically convert to a Floating Rate Revolving Loan); provided,
however, that no portion of the outstanding principal amount of any Loans may
be continued as, or be converted into, a Eurodollar Advance when any Default
has occurred and is continuing.

       3.7.   Telephonic Notices.  The Company hereby authorizes the U.S.
Lenders and the Global Administrative Agent to extend Advances, effect Rate
Option selections and submit Competitive Bid Quotes based on telephonic notices
made by any Person or Persons the Global Administrative Agent or any U.S.
Lender in good faith believes to be acting on behalf of the Company.  The
Company agrees to deliver promptly to the Global Administrative Agent a written
confirmation of each telephonic notice signed by an Authorized Officer.  If the
written confirmation differs in any material respect from the action taken by
the Global Administrative Agent and the U.S. Lenders, the records of the Global
Administrative Agent and the U.S. Lenders shall govern absent manifest error.

       3.8.   Rate after Maturity.  Except as provided in the next sentence,
any Advance not paid at maturity, whether by acceleration or otherwise, shall
bear interest until paid in full at a rate per annum equal to the Alternate
Base Rate plus 2%.  In the case of a Eurodollar Advance the maturity of which
is accelerated, such Eurodollar Advance shall bear interest for the remainder
of the applicable Interest Period, at the higher of (i) the rate (including the
Eurodollar Spread or the Competitive Bid Margin, as applicable) otherwise
applicable to such Interest Period plus 2% per annum or (ii) the Alternate Base
Rate plus 2% per annum.

       3.9.   Interest Payment Dates; Determination of Interest and Fees.

       (a)    Interest Payment Dates.

              (i)    Interest accrued and unpaid on each Floating Rate
       Revolving Advance shall be payable on each Payment Date and on any date
       on which such Floating Rate Revolving Advance is paid or prepaid,
       whether due to acceleration or otherwise.  Interest accrued on each
       Eurodollar Revolving Advance shall be payable on the last day of its
       applicable Interest Period and on any date on which such Eurodollar
       Revolving Advance is prepaid, whether due to acceleration or otherwise.
       Interest accrued on each Eurodollar Revolving Advance having an Interest
       Period longer than three (3) months shall also be payable on the last
       day of each three-month interval during such Interest Period.

              (ii)   Interest on the outstanding principal amount of
       Competitive Bid Loans shall be payable on the Stated Maturity Date for
       each such Competitive Bid Loan; provided, however, that in the case of a
       Eurodollar Bid Rate Advance having an Interest Period longer than three
       (3) months, interest accrued on such Eurodollar Bid Rate Advance shall
       also be payable on the last day of each three-month interval during such
       Interest Period.

Interest shall be payable for the day an Advance is made but not for the day of
any payment on the amount paid if payment is received prior to noon (local
time) at the place of payment.  If any payment of principal of, or interest on,
an Advance shall become due on a day which is not a Business Day, such payment
shall be made on the next succeeding Business Day (except as provided in the
definition of Interest Period) and, in the case of a principal payment, such
extension of time shall be included in computing interest in connection with
such payment.

       (b)    Determination of Interest and Fees.  Interest on any Advance or
portion thereof bearing interest at the Alternate Base Rate or the Floating Bid
Rate and facility fees shall be calculated for actual days elapsed on the basis
of a 365- or, if applicable, 366-day year, and all other interest and fees
shall be calculated for actual days elapsed on the basis of a 360-day year. Any
change in the Eurodollar Spread attributable to a change in the
Debt/Capitalization Ratio, if any, shall be effective on the forty-fifth (45th)
day following the end of the calendar quarter in which occurred a change in
Debt/Capitalization Ratio.  Any change in the Eurodollar Spread attributable to
a change in the Company's applicable Rating Level, if any, shall be effective
on the same day as such change in the Company's applicable Rating Level.





                                       31
<PAGE>   38
       3.10.  Notification of Advances, Interest Rates, Prepayments and
Commitment Reductions.  Promptly after receipt thereof, the Global
Administrative Agent will notify each U.S. Lender of the contents of each
commitment reduction notice (pursuant to Section 4.5), Borrowing Notice,
Continuation/Conversion Notice, Competitive Bid Quote Request and repayment
notice received by it hereunder.  The Global Administrative Agent will notify
each U.S. Lender of the Eurodollar Rate applicable to each Eurodollar Advance
promptly upon determination of such Eurodollar Rate and will give each U.S.
Lender prompt notice of each change in the Alternate Base Rate.  Each Reference
Lender agrees to furnish timely information for the purpose of determining the
Eurodollar Rate.

       3.11.  Non-Receipt of Funds by the Global Administrative Agent.  Unless
the Company or a U.S. Lender, as the case may be, notifies the Global
Administrative Agent prior to the date on which it is scheduled to make payment
to the Global Administrative Agent of (i) in the case of a U.S. Lender, the
proceeds of a Loan or (ii) in the case of the Company, a payment of principal,
interest, fees or other amounts to the Global Administrative Agent for the
account of the U.S. Lenders or any Agent, that it does not intend to make such
payment, the Global Administrative Agent may assume that such payment has been
made.  The Global Administrative Agent may, but shall not be obligated to, make
the amount of such payment available to the intended recipient in reliance upon
such assumption.  If such U.S. Lender or the Company, as the case may be, has
not in fact made such payment to the Global Administrative Agent, the recipient
of such payment shall, on demand by the Global Administrative Agent, repay to
the Global Administrative Agent the amount so made available together with
interest thereon in respect of each day during the period commencing on the
date such amount was so made available by the Global Administrative Agent until
the date the Global Administrative Agent recovers such amount at a rate per
annum equal to (i) in the case of payment by a U.S. Lender, the Federal Funds
Effective Rate for such day or (ii) in the case of payment by the Company, the
interest rate applicable to the relevant Loan or, in the case of payments in
respect of interest, fees or other amounts, at a rate equal to the Alternate
Base Rate.


                                   ARTICLE IV

              MANDATORY PAYMENTS; REDUCTIONS OF COMMITMENTS; ETC.

       4.1.   Mandatory Prepayments.

       (a)    Mandatory Prepayments.  To the extent that other payments have
not been made to remedy the conditions described below, the Company shall:

       (i)    if a Debt Limit Excession has occurred and is continuing, within
              120 days, unless otherwise provided below, and prior to any
              payment (other than any scheduled payment) of any other Borrowing
              Base Debt make a mandatory prepayment on the Loans in an amount
              equal to the amount necessary to eliminate any such Debt Limit
              Excession together with all interest accrued on the amount of
              such prepayment to the date thereof;

       (ii)   in the event that the issuance, assumption or creation of
              Borrowing Base Debt on any day which would cause a Debt Limit
              Excession effective as of 5:00 pm. (Central time) on such day,
              immediately, and in any event before 5:00 p.m. (Central time), on
              such day make a mandatory prepayment on the Loans in an amount
              equal to the lesser of (x) the amount which would be necessary to
              eliminate such a Debt Limit Excession or (y) the aggregate
              principal amount of such Borrowing Base Debt issued, assumed or
              created on such day; and

       (iii)  upon the consummation of any Sale of any Property or any
              Borrowing Base Subsidiary constituting (and designated by the
              Company in a notice to the Global Administrative Agent as
              constituting) a permitted Sale under clause (iii) or (iv) of
              Section 11.3 which results in a Debt Limit Excession, promptly,
              and in any event within three (3) Business Days thereof, make a
              mandatory prepayment on the Loans in the amount necessary to
              eliminate such Debt Limit Excession.





                                       32
<PAGE>   39
Notwithstanding that the Company shall have the period in which to make any
mandatory prepayment specified in this Section 4.1(a), (i) the Company shall
not be entitled to borrow Loans during such period except as provided under
Section 2.1(b) and (ii) the Company shall make all other prepayments and
payments required under or in connection with this Agreement; provided, that
for purposes of the foregoing provisions of this sentence the continuation of
any Floating Rate Loan or any Eurodollar Loan or the conversion of an
outstanding Eurodollar Loan into a Floating Rate Loan or, except if a
Commercial Paper Backup Exclusion Event has occurred and is continuing, the
borrowing of a Loan which is used exclusively to repay Commercial Paper
Obligations during such period shall not be deemed to be the borrowing of a
Loan; provided, however, that in the case of a continuation of a Eurodollar
Loan during a continuing Debt Limit Excession, such continuation shall only be
permitted for a period ending on or prior to the date provided in this Section
by which the Company is required to make a mandatory prepayment because of a
Debt Limit Excession.

       (b)    Application of Mandatory Prepayments.  Each mandatory prepayment
made under this Section 4.1 shall be applied (i) first, ratably among the U.S.
Lenders with respect to any principal and interest due in connection with
Revolving Loans, (ii) second, after all amounts described in clause (i) have
been satisfied, ratably among those U.S. Lenders for whom any payment of
principal and interest is due in connection with any Competitive Bid Loans and
(iii) third, after all amounts described in clauses (i) and (ii) have been
satisfied, ratably to any other Obligations then due.

       4.2.   Voluntary Prepayments.  The Company may from time to time, at its
option, prepay outstanding Advances, upon three (3) Business Days' prior notice
to the Global Administrative Agent in the case of a Eurodollar Advance, or upon
one (1) Business Day's prior notice to the Global Administrative Agent in the
case of a Floating Rate Advance; provided that each such prepayment shall be in
a minimum aggregate amount of $5,000,000 or any integral multiple of $1,000,000
in excess thereof without penalty or premium, except that if such prepayment of
a Eurodollar Loan occurs prior to a last day of any applicable Interest Period,
the Company shall also pay the amount specified in Section 6.3 at the time of
such prepayment.  Such prepayments shall be applied, at the Company's option,
against outstanding Revolving Loans and Competitive Bid Loans and against
installments or amounts due on account thereof in such order of application as
the Company shall direct; provided, that if the Company fails to direct an
order of application at or prior to the time of such notice of prepayment, then
such prepayments shall be applied (i) first, ratably among the U.S. Lenders
with respect to any principal and interest due in connection with Revolving
Loans, (ii) second, after all amounts described in clause (i) have been
satisfied, ratably among those U.S. Lenders for whom any payment of principal
and interest is due in connection with any Competitive Bid Loans and (iii)
third, after all amounts described in clauses (i) and (ii) have been satisfied,
ratably to any other Obligations then due; provided, further, that if, at the
time of any such prepayment, any Default shall have occurred and shall be
continuing, then the holders of the Obligations shall share such prepayment on
a pro rata basis, based on the respective amount of Obligations owing to each
such holder (whether or not matured and currently payable and whether
consisting of principal, accrued interest, fees, expenses, indemnities or other
types of Obligations) as of the date of occurrence of such Default.

       4.3.   Method of Payment.  All payments of principal, interest, and fees
hereunder shall be made by noon (Chicago time) on the date when due in
immediately available funds to the Global Administrative Agent at the Global
Administrative Agent's address specified pursuant to Article XVIII, or at any
other single Lending Installation of the Global Administrative Agent specified
not less than five (5) days prior to the date when due in writing by the Global
Administrative Agent to the Company and shall be applied (i) first, ratably
among the U.S. Lenders with respect to any principal and interest due in
connection with Revolving Loans, (ii) second, after all amounts described in
clause (i) have been satisfied, ratably among those U.S. Lenders for whom any
payment of principal and interest is due in connection with any Competitive Bid
Loans and (iii) third, after all amounts described in clauses (i) and (ii) have
been satisfied, ratably to any other Obligations then due; provided, however,
that, if, at the time of any such payment, any Default shall have occurred and
shall be continuing, then the holders of the Obligations shall share such
payment on a pro rata basis, based on the respective amount of Obligations
owing to each such holder (whether or not matured and currently payable and
whether consisting of principal, accrued interest, fees, expenses, indemnities
or other types of Obligations) as of the date of occurrence of such Default.
As between the Company and any U.S. Lender, the timely receipt of any payment
by the Global Administrative Agent from the Company for the account of such
U.S. Lender shall constitute receipt by such U.S. Lender.  Each payment
delivered to the Global Administrative Agent for the account of any U.S. Lender
shall be delivered promptly by the Global Administrative Agent to such U.S.
Lender in the same type of funds which the





                                       33
<PAGE>   40
Global Administrative Agent received at its address specified pursuant to
Article XVIII or at any Lending Installation specified in a notice received by
the Global Administrative Agent from such U.S. Lender.  Each of the Company and
the Global Administrative Agent shall be deemed to have complied with this
Section 4.4 with respect to any payment if it shall have initiated a wire
transfer to the appropriate recipient thereof and furnished such recipient with
the identifying number of such wire transfer.

       4.4.   Notes.  Each U.S. Lender is hereby authorized to record the
principal amount of each of its Loans and each repayment thereof, on the
schedule attached to each of its Notes, provided, however, that the failure to
so record shall not affect the Company's obligations under any such Note.

       4.5.   Voluntary Reductions of Commitments.  The Company may permanently
reduce the Aggregate Commitment in whole, or in part, ratably among the U.S.
Lenders, in a minimum aggregate amount of $5,000,000 or any integral multiple
of $1,000,000 in excess thereof; provided, however, that the amount of the
Aggregate Commitment may not be reduced to an amount which would cause it to be
less than the outstanding principal amount of the Loans; and provided, further,
that, during the existence of either the Australian Credit Agreement or the
Canadian Credit Agreement, the amount of the Aggregate Commitment may not be
reduced to an amount less than $500,000,000.  All accrued facility fees shall
be payable on the effective date of any such reduction or termination of the
Aggregate Commitment.

       4.6.   Voluntary and Mandatory Prepayments.  Any prepayments of
principal of the Loans, whether voluntary or mandatory, shall include accrued
interest to, but not including, the date of the prepayment on the principal
amount being prepaid.

                                   ARTICLE V

                            [Intentionally Omitted.]


                                   ARTICLE VI

                         CHANGE IN CIRCUMSTANCES; TAXES

       6.1.   Yield Protection.  If any law or any governmental or quasi-
governmental rule, regulation, policy, guideline or directive (whether or not
having the force of law), or any reasonable interpretation thereof, or
compliance of any U.S. Lender with such,

              (a)    imposes or increases or deems applicable any reserve,
       assessment, insurance charge, special deposit or similar requirement
       against assets of, deposits with or for the account of, or credit
       extended by, any U.S. Lender or any applicable Lending Installation
       (other than reserves and assessments taken into account in determining
       the interest rate applicable to Eurodollar Advances), or

              (b)    imposes any other condition the result of which is to
       increase the cost to any U.S. Lender or any applicable Lending
       Installation of making, funding or maintaining Loans or reduces any
       amount receivable by any U.S. Lender or any applicable Lending
       Installation in connection with Loans, or requires any U.S. Lender or
       any applicable Lending Installation to make any payment calculated by
       reference to the amount of Loans held or interest received, by an amount
       reasonably deemed material by such U.S. Lender,

then, within 15 days of demand by such U.S. Lender, the Company shall pay such
U.S. Lender that portion of such increased expense incurred or reduction in an
amount received which such U.S. Lender reasonably determines is attributable to
making, funding and maintaining its Loans and its Commitment.





                                       34
<PAGE>   41
       6.2.   Availability of Rate Options.  If any U.S. Lender determines that
maintenance of its Eurodollar Loans at a suitable Lending Installation would
violate any applicable law, rule, regulation or directive, whether or not
having the force of law, (i) the Global Administrative Agent shall suspend the
availability of the Eurodollar Rate with respect to such U.S. Lender until such
time as such situation is no longer the case, (ii) any Eurodollar Loans from
such U.S. Lender then outstanding shall bear interest at the Alternate Base
Rate for the remainder of the Interest Period applicable to such Loan and (iii)
until such time as such situation is no longer the case, any Eurodollar Advance
made thereafter shall consist of a Floating Rate Loan made by such U.S.
Lender(s) and Eurodollar Loans made by each other U.S. Lender.  If the Required
Lenders reasonably determine that deposits of a type or maturity appropriate to
match fund Eurodollar Advances are not available, the Global Administrative
Agent shall suspend the availability of the Eurodollar Rate with respect to any
Eurodollar Advances made after the date of any such determination until such
time as such situation is no longer the case.  If the Required Lenders
determine that the Eurodollar Rate does not accurately reflect the cost of
making a Eurodollar Advance at such Eurodollar Rate, then, if for any reason
whatsoever the provisions of Section 6.1 are inapplicable, the Global
Administrative Agent shall suspend the availability of the Eurodollar Rate with
respect to any Eurodollar Advances made on or after the date of any such
determination until such time as such situation is no longer the case and shall
require any outstanding Eurodollar Advances to be repaid.

       6.3.   Funding Indemnification.  If any payment of a Eurodollar Advance
occurs on a date which is not the last day of the applicable Interest Period,
whether because of acceleration, prepayment, conversion or otherwise (except
pursuant to Section 6.2), or a Eurodollar Advance is not made on the date
specified by the Company for any reason other than default by the U.S. Lenders,
the Company will indemnify each U.S. Lender for any loss or cost incurred by it
resulting therefrom, including, without limitation, any loss or cost in
liquidating or employing deposits acquired to fund or maintain the Eurodollar
Advance (net of any cost or expense, unless Section 6.1, 6.5 or 6.6 is
applicable thereto, which the U.S. Lender would have incurred with respect to
such Eurodollar Advance had such prepayment or failure to fund not occurred).

       6.4.   Lending Installations.  Each U.S. Lender may book its Loans at
any Lending Installation selected by such U.S. Lender and may change its
Lending Installation from time to time.  All terms of this Agreement shall
apply to any such Lending Installation and the Notes shall be deemed held by
each U.S. Lender for the benefit of such Lending Installation.  Each U.S.
Lender may, by written or telex or facsimile notice to the Global
Administrative Agent and the Company, designate a Lending Installation through
which Loans will be made by it and for whose account Loan payments are to be
made.  To the extent reasonably possible, each U.S. Lender shall designate an
alternate Lending Installation with respect to its Eurodollar Loans to reduce
any liability of the Company to such U.S. Lender under Sections 6.1, 6.5 and
6.6 or to avoid the unavailability of a Rate Option under Section 6.2, so long
as such designation is not disadvantageous to such U.S. Lender in the sole
opinion of such U.S. Lender.

       6.5.   Increased Capital Costs.  If any change in, or the introduction,
adoption, effectiveness, interpretation, reinterpretation or phase-in of, any
law or regulation, directive, guideline, decision or request (whether or not
having the force of law) of any court, central bank, regulator or other
governmental authority affects or would affect the amount of capital required
or expected to be maintained by any U.S. Lender or any Person controlling such
U.S. Lender, and such U.S. Lender determines (in its sole and absolute
discretion) that the rate of return on its or such controlling Person's capital
as a consequence of its Commitments or the Loans made by such U.S. Lender is
reduced to a level below that which such U.S. Lender, or such controlling
Person, as the case may be, could have achieved but for the occurrence of any
such circumstance (taking into account such Person's policies as to capital
adequacy), then, in any such case upon notice from time to time by such U.S.
Lender to the Company, the Company shall immediately pay directly to such U.S.
Lender additional amounts sufficient to compensate such U.S. Lender or such
controlling Person for such reduction in rate of return.  A statement of such
U.S. Lender as to any such additional amount or amounts (including calculations
thereof in reasonable detail) shall, in the absence of manifest error, be
conclusive and binding on the Company.  In determining such amount, such U.S.
Lender may use any method of averaging and attribution that it (in its sole and
absolute discretion) shall deem applicable.

       6.6.   Taxes.  All payments by the Company or any Guarantor of principal
of, and interest on, the Loans and all other amounts payable hereunder and in
connection herewith shall be made free and clear of and without deduction





                                       35
<PAGE>   42
for any present or future income, excise, stamp or franchise taxes and other
taxes, fees, duties, withholdings or other charges of any nature whatsoever
imposed by any taxing authority, but excluding franchise taxes and taxes
imposed on or measured by any Agent's or any U.S. Lender's, as applicable, net
income or receipts (such non-excluded items being called "Taxes").  In the
event that any withholding or deduction from any payment to be made by the
Company or any Guarantor hereunder or under any U.S. Loan Document is required
in respect of any Taxes pursuant to any applicable law, rule or regulation,
then the Company will

              (a)    pay directly to the relevant authority the full amount
       required to be so withheld or deducted;

              (b)    promptly forward to the Global Administrative Agent an
       official receipt or other documentation satisfactory to the Global
       Administrative Agent or the relevant Agent or U.S. Lender evidencing
       such payment to such authority; and

              (c)    pay to the Global Administrative Agent for the account of
       the Agents and the U.S. Lenders such additional amount or amounts as is
       necessary to ensure that the net amount actually received by each Agent
       and U.S. Lender will equal the full amount such Agent or U.S. Lender
       would have received had no such withholding or deduction been required.

Moreover, if any Taxes are directly asserted against any Agent or any U.S.
Lender, with respect to any payment received by it hereunder or in connection
herewith, the relevant Agent or U.S. Lender may pay such Taxes and the Company
will promptly pay such additional amounts (including any penalties, interest or
expenses) as is necessary in order that the net amount received by such Person
after the payment of such Taxes (including any Taxes on such additional amount)
shall equal the amount such Person would have received had not such Taxes been
asserted.

       If the Company fails to pay any Taxes when due to the appropriate taxing
authority or fails to remit to the Global Administrative Agent, for the account
of the respective Agents and U.S. Lenders, the required receipts or other
required documentary evidence, the Company shall indemnify the Agents and the
U.S. Lenders for any incremental Taxes, interest or penalties that may become
payable by any Agent or U.S. Lender as a result of any such failure.  For
purposes of this Section 6.6, a distribution hereunder by the Global
Administrative Agent or any other Agent or any U.S. Lender to or for the
account of any Agent or U.S. Lender shall be deemed a payment by the Company.

       Notwithstanding the foregoing, if any Agent or any U.S. Lender not
incorporated or organized under the laws of the United States of America, or a
state thereof, fails to timely deliver the forms required to be delivered
pursuant to Section 6.8 in a situation in which timely delivery of such forms
would eliminate some or all requirements for withholding of United States
federal income taxes by the Company or any Guarantor in connection with
payments under this Agreement or the other U.S. Loan Documents, then the
Company shall not be required to pay or reimburse to the U.S. Lender or Agent
any amount in respect of such Taxes withheld that would not have been required
to be withheld if such U.S. Lender or Agent had timely delivered such forms.

       6.7.   U.S. Lender Statements; Survival of Indemnity; Substitution of
U.S. Lenders; Limitation on Claims by U.S. Lenders.  Each Agent and U.S. Lender
shall deliver to the Company and the Global Administrative Agent a written
statement of such Agent or U.S. Lender, as the case may be, as to the amount
due, if any, under Sections 6.1, 6.3, 6.5 or 6.6.  Such written statement shall
set forth in reasonable detail the calculations upon which such Agent or U.S.
Lender, as the case may be, determined such amount and shall be final,
conclusive and binding on the Company in the absence of manifest error.
Determination of amounts payable under such Sections in connection with a
Eurodollar Loan shall be calculated as though each U.S. Lender funded its
Eurodollar Loan through the purchase of a deposit of the type and maturity
corresponding to the deposit used as a reference in determining the Eurodollar
Rate applicable to such Loan, whether in fact that is the case or not.  Unless
otherwise provided herein, the amount specified in the written statement shall
be payable on demand after receipt by the Company of the written statement.
The obligations of the Company under Sections 6.1, 6.3, 6.5 and 6.6 shall
survive payment of the Obligations and termination of this Agreement.  In the
event that any U.S. Lender shall deliver to the Company and the Global
Administrative Agent a written statement as to an amount due under Section 6.1,
6.3, 6.5 or 6.6, the Company may, at its sole expense and





                                       36
<PAGE>   43
effort, require such U.S. Lender to transfer and assign (in accordance with
Section 17.3), without recourse, all of its interests, rights and obligations
under this Agreement to an assignee which shall assume such assigned
obligations (which assignee may be another U.S. Lender, if a U.S. Lender
accepts such assignment); provided that (i) such assignment shall not conflict
with any law, rule or regulation or order of any court or other governmental
authority, (ii) the Company shall have received a written consent of the Global
Administrative Agent and the Arrangers in the case of an entity that is not a
U.S. Lender, which consent shall not be unreasonably withheld, (iii) the
Company or such assignee shall have paid to the assigning U.S. Lender in
immediately available funds the principal of and interest accrued to the date
of such payment on the Loans made by it hereunder and all other amounts owed to
it hereunder and the fee payable to the Global Administrative Agent pursuant to
Section 17.3(b) and (iv) that nothing in the foregoing is intended or shall be
construed as obligating any U.S. Lender to locate such an assignee.  The
Company shall not be required to pay to any U.S. Lender any amount under
Section 6.1, 6.3, 6.5, or 6.6 in respect of any time or period more than twelve
months prior to the time such U.S. Lender notifies or bills the Company of or
for such amount.

       6.8.   Withholding Tax Exemption.  At least five (5) Business Days prior
to the first date on which interest or fees are payable hereunder (but in no
event prior to the Global Effective Date) for the account of any U.S. Lender or
any Agent, each U.S. Lender or Agent that is not incorporated or organized
under the laws of the United States of America, or a state thereof, agrees that
it will deliver to each of the Company and the Global Administrative Agent two
(2) duly completed copies of United States Internal Revenue Service Form 1001
or 4224, certifying in either case that such U.S. Lender or Agent, as the case
may be, is entitled to receive payments under this Agreement and the Notes
without deduction or withholding of any United States federal income taxes.
Each U.S. Lender or Agent which so delivers a Form 1001 or 4224 further
undertakes to deliver to each of the Company and the Global Administrative
Agent two (2) additional copies of such form (or a successor form) on or before
the date that such form expires (currently, three (3) successive calendar years
for Form 1001 and one (1) calendar year for Form 4224) or becomes obsolete or
after the occurrence of any event requiring a change in the most recent forms
so delivered by it, and such amendments thereto or extensions or renewals
thereof as may be reasonably requested by the Company or the Global
Administrative Agent, in each case certifying that such U.S. Lender or Agent,
as the case may be, is entitled to receive payments under this Agreement and
the Notes without deduction or withholding of any United States federal income
taxes, unless an event (including without limitation any change in treaty, law
or regulation) has occurred prior to the date on which any such delivery would
otherwise be required which renders all such forms inapplicable or which would
prevent such U.S. Lender or Agent from duly completing and delivering any such
form with respect to it and such U.S. Lender or Agent, as the case may be,
advises the Company and the Global Administrative Agent that it is not capable
of receiving payments without any deduction or withholding of United States
federal income tax.

       6.9.   Currency Conversion and Currency Indemnity.

       (a)    Payments in Agreed Currency.  The Company or any Guarantor shall
make payment relative to any Obligation in the currency (the "Agreed Currency")
in which the Obligation was effected.  If any payment is received on account of
any Obligation in any currency (the "Other Currency") other than the Agreed
Currency (whether voluntarily or pursuant to an order or judgment or the
enforcement thereof or the realization of any security or the liquidation of
the Company or any Guarantor or otherwise howsoever), such payment shall
constitute a discharge of the liability of the Company or such Guarantor
hereunder and under the other U.S. Loan Documents in respect of such obligation
only to the extent of the amount of the Agreed Currency which the relevant U.S.
Lender or Agent, as the case may be, is able to purchase with the amount of the
Other Currency received by it on the Business Day next following such receipt
in accordance with its normal procedures and after deducting any premium and
costs of exchange.

       (b)    Conversion of Agreed Currency into Judgment Currency.  If, for
the purpose of obtaining or enforcing judgment in any court in any
jurisdiction, it becomes necessary to convert into a particular currency (the
"Judgment Currency") any amount due in the Agreed Currency then the conversion
shall be made on the basis of the rate of exchange prevailing on the Business
Day next preceding the day on which judgment is given and in any event the
Company or a Guarantor shall be obligated to pay the Agents and the U.S.
Lenders any deficiency in accordance with Section 6.9(a).  For the foregoing
purposes "rate of exchange" means the rate at which the relevant U.S. Lender or





                                       37
<PAGE>   44
Agent, as applicable, in accordance with its normal banking procedures is able
on the relevant date to purchase the Agreed Currency with the Judgment Currency
after deducting any premium and costs of exchange.

       (c)    Circumstances Giving Rise to Indemnity.  If (i) any U.S. Lender
or the Agent receives any payment or payments on account of the liability of
the Company or any Guarantor hereunder pursuant to any judgment or order in any
Other Currency, and (ii) the amount of the Agreed Currency which the relevant
U.S. Lender or Agent, as applicable, is able to purchase on the Business Day
next following such receipt with the proceeds of such payment or payments in
accordance with its normal procedures and after deducting any premiums and
costs of exchange is less than the amount of the Agreed Currency due in respect
of such obligations immediately prior to such judgment or order, then the
Company or the Guarantor on demand shall, and the Company or the Guarantor
hereby agree to, indemnify and save the U.S. Lenders and the Agents harmless
from and against any loss, cost or expense arising out of or in connection with
such deficiency.

       (d)    Indemnity Separate Obligation.  The agreement of indemnity
provided for in Section 6.9(c) shall constitute an obligation separate and
independent from all other obligations contained in this Agreement, shall give
rise to a separate and independent cause of action, shall apply irrespective of
any indulgence granted by the U.S. Lenders or Agents or any of them from time
to time, and shall continue in full force and effect notwithstanding any
judgment or order for a liquidated sum in respect of an amount due hereunder or
under any judgment or order.

                                  ARTICLE VII

                              CONDITIONS PRECEDENT

       7.1.   Conditions of Effectiveness.  The effectiveness of this Agreement
and the obligation of each U.S. Lender to make Loans hereunder, are subject to
the conditions precedent that the following documents have been furnished to
the Global Administrative Agent, each in form and substance satisfactory to
each of the Global Administrative Agent and the Arrangers, and each (except for
the Notes, of which only one original of each type shall be signed for each
U.S. Lender) in sufficient number of duly executed signed counterparts (or
photocopies thereof) to provide one for the Global Administrative Agent, the
Arrangers and each U.S. Lender:

              (i)    Copies of the Articles of Incorporation of each of the
       Company and MW Petroleum, together with all amendments, and certificates
       of good standing, all of the foregoing certified by the appropriate
       governmental officer in their respective jurisdiction of incorporation
       and, in the case of certificates of good standing, in each jurisdiction
       in which its business is conducted.

              (ii)   Copies, certified by the Secretary or Assistant Secretary
       of each of the Company and MW Petroleum, of their respective by-laws and
       of their respective Board of Directors' resolutions (and resolutions of
       other bodies, if any are deemed necessary by counsel for the Global
       Administrative Agent) authorizing the execution, delivery and
       performance of the U.S. Loan Documents.

              (iii)  Incumbency certificates, executed by the Secretary or
       Assistant Secretary of each of the Company and MW Petroleum, which shall
       identify by name and title and bear the signature of the officers of the
       Company and MW Petroleum, respectively, authorized to sign the U.S. Loan
       Documents and, in the case of the Company, to make borrowings hereunder,
       upon which certificate the Agents and the U.S. Lenders shall be entitled
       to rely until informed of any change in writing by the Company or MW
       Petroleum, respectively.

              (iv)   Written opinions of the Company's and MW Petroleum's
       counsel acceptable to each of the Agents and the Arrangers, addressed to
       the Agents and the U.S. Lenders, in substantially the form of Exhibit B
       hereto, with such modifications, additions, alterations, exceptions,
       assumptions and provisions as shall be acceptable to each of the
       Arrangers.

              (v)    The Notes payable to the order of each of the U.S.
       Lenders.





                                       38
<PAGE>   45
              (vi)   A certificate of an Authorized Officer of the Company,
       satisfactory to each of the Agents and the Arrangers, regarding
       insurance maintained by the Company.

              (vii)  The Acknowledgment to Guaranty of MW Petroleum.

              (viii) The opinion of Mayer, Brown & Platt, special counsel to
       the Global Administrative Agent and the Arrangers, addressed to the
       Agents and the Canadian Lenders, substantially in the form of Exhibit G
       hereto.

              (ix)   The Global Effectiveness Notice.

              (x)    A certificate, signed by an Authorized Officer of the
       Company, stating that on the Global Effective Date no Default or
       Unmatured Default has occurred and is continuing and no Downgrade
       Condition has occurred and is continuing.

              (xi)   Copies of the executed Australian Credit Agreement and the
       other Australian Loan Documents, the executed Canadian Credit Agreement
       and the other Canadian Loan Documents, the executed Intercreditor
       Agreement and executed Indemnity Agreements.

              (xii)  Such other instruments and documents as any of the
       Arrangers or the Agents or their counsel may have reasonably requested.

       The effectiveness of this Agreement and the obligation of each U.S.
Lender to make Loans hereunder, are further conditioned upon satisfaction of
the following on or prior to the Global Effective Date:

              (a)    the Agents shall have received the fees to be received as
       set forth in Section 2.4(b).

              (b)    Upon the effectiveness of this Agreement, all then
       outstanding 1995 Loans shall be renewed, restated, extended and
       converted into (but shall not be deemed to be repaid) Revolving Loans
       under this Agreement; provided, however, that from and including the
       Global Effective Date, the Eurodollar Spread applicable with respect to
       such renewed, restated, extended and converted 1995 Loans shall be
       determined pursuant to this Agreement, and provided further that in no
       event shall the converted commitments of a Lender under the March 1995
       Agreement exceed such Lender's Commitment hereunder or shall converted
       outstanding 1995 Loans exceed the Aggregate Commitment of the Lenders
       under this Agreement.  The U.S. Lenders and the Agents hereby consent to
       such repayments, renewals, restatements, extensions and conversions.

       7.2.   Each Advance.  The U.S. Lenders shall not be required to make any
Advance unless on the applicable Borrowing Date:

              (a)    There exists no Default or Unmatured Default.

              (b)    There exists no Debt Limit Excession and the Company
       represents and warrants to the Global Administrative Agent that,
       immediately before and after such Advance, there exists no Debt Limit
       Excession other than a Debt Limit Excession permitted pursuant to the
       first proviso to Section 2.1(b).

              (c)    The representations and warranties contained in Article
       VIII, including in Sections 8.3 and 8.7, or contained in any other U.S.
       Loan Document are true and correct as of such Borrowing Date except for
       changes in the Schedules hereto reflecting transactions permitted by
       this Agreement.

              (d)    All legal requirements arising under or in connection with
       the U.S. Loan Documents or applicable laws, rules or regulations and
       incident to the making of such Advance shall be satisfactory to the
       Agents and the Arrangers and their respective counsel.





                                       39
<PAGE>   46
              (e)    No event, occurrence, action, inaction or other item shall
       have occurred which results in a Material Adverse Effect.

provided, however, notwithstanding the foregoing, except if a Commercial Paper
Backup Exclusion Event has occurred and is continuing, the Lenders shall be
required to make any Advance used exclusively to repay Commercial Paper
Obligations.

       Each Borrowing Notice, Competitive Bid Borrowing Notice and
Continuation/Conversion Notice with respect to each Advance shall constitute a
representation and warranty by the Company that the conditions contained in
Sections 7.2(a), (b), (c) and (d) have been satisfied and, that after giving
effect to such Advance and the assignment or application of the proceeds
thereof, the sum of the aggregate outstanding principal amount of all Borrowing
Base Debt will not exceed the Global Borrowing Base except as permitted in
Section 2.1(b).


                                  ARTICLE VIII

                         REPRESENTATIONS AND WARRANTIES

       The Company represents and warrants to the U.S. Lenders and the Agents
that:

       8.1.   Corporate Existence and Standing.  The Company is a corporation,
and each Subsidiary is a corporation or other legal entity, in either case duly
incorporated or otherwise properly organized, validly existing and in good
standing under the laws of its jurisdiction of incorporation or organization
and has all requisite authority, permits and approvals, and is in good standing
to conduct its business in each jurisdiction in which its business is
conducted.

       8.2.   Authorization and Validity.  The Company and each Subsidiary has
the corporate or partnership power and authority and legal right to execute and
deliver the U.S. Loan Documents and to perform its respective obligations
thereunder.  The execution and delivery by the Company and each Subsidiary of
the U.S. Loan Documents to which it is a party and the performance of the
Company's and such Subsidiary's obligations thereunder have been duly
authorized by proper corporate or partnership proceedings, and the U.S. Loan
Documents have been duly executed and delivered and constitute legal, valid and
binding obligations of the Company and each Subsidiary party thereto, in each
case enforceable against the Company and such Subsidiary in accordance with
their terms, except as enforceability may be limited by bankruptcy, insolvency
or similar laws affecting the enforcement of creditors' rights generally.

       8.3.   No Conflict; Government Consent.  Neither the execution and
delivery by the Company and each Subsidiary of the U.S. Loan Documents nor the
consummation of the transactions therein contemplated, nor compliance with the
provisions thereof will violate any law, rule, regulation, order, writ,
judgment, injunction, decree or award binding on the Company or any Subsidiary
or the Company's or any Subsidiary's articles of incorporation or by-laws or
partnership agreement or the provisions of any indenture, instrument or
agreement to which the Company or any Subsidiary is a party or is subject, or
by which it, or its property, is bound, or conflict with or constitute a
default thereunder, or result in the creation or imposition of any Lien in, of
or on all or any part of the property of the Company or any Subsidiary.  No
order, consent, approval, license, authorization, or validation of, or filing,
recording or registration with, or exemption by, any governmental or public
body or authority, or any subdivision thereof, is required to authorize, or is
required in connection with the execution, delivery and performance of, or the
legality, validity, binding effect or enforceability of, any of the U.S. Loan
Documents.

       8.4.   Financial Statements.  The consolidated financial statements of
the Company dated December 31, 1995 heretofore delivered to the U.S. Lenders
were prepared in accordance with generally accepted accounting principles in
effect on the date such statements were prepared and fairly present the
consolidated financial condition of the Company and the Subsidiaries at such
date and the consolidated results of their operations for the period then
ended.





                                       40
<PAGE>   47
       8.5.   Material Adverse Change.  Since December 31, 1995, there has been
no change in the business, assets, properties, operations, condition (financial
or otherwise) or results of operations or prospects of the Company and its
Subsidiaries or MW Petroleum and its Subsidiaries or any legal or regulatory
development which results in a Material Adverse Effect.

       8.6.   Taxes.  The Company and the Subsidiaries have filed all United
States federal tax returns and all other tax returns which are required to be
filed and have paid all taxes due pursuant to said returns or pursuant to any
assessment received by the Company or any Subsidiary, except such taxes, if
any, as are being contested in good faith and as to which adequate reserves
have been provided.  The United States income tax returns of the Company and
the Subsidiaries (other than MW Petroleum and MWJR) have been audited by the
Internal Revenue Service or, if no audit was performed, the statute of
limitations permitting such an audit has run, through the fiscal year ended
December 31, 1990.  No tax liens have been filed and no claims are being
asserted with respect to any such taxes.  The charges, accruals and reserves on
the books of the Company and the Subsidiaries in respect of any taxes or other
governmental charges are adequate.

       8.7.   Litigation and Guaranteed Obligations.  There is no litigation,
arbitration, governmental investigation, proceeding or inquiry pending or, to
the knowledge of any of their officers, threatened against or affecting the
Company or any Subsidiary which results in a Material Adverse Effect.  The
Company and its Subsidiaries have no material contingent obligations not
provided for or disclosed in the financial statements referred to in Section
8.4.

       8.8.   Subsidiaries.  Schedule 8.8 hereto contains an accurate list of
all of the presently existing Subsidiaries, including, without limitation,
Borrowing Base Subsidiaries, of the Company as of the date of this Agreement,
setting forth their respective jurisdictions of incorporation or organization
and the percentage of their respective capital stock or, the revenue share
attributable to the general and limited partnership interests, as the case may
be, owned by the Company or other Subsidiaries.  All of the issued and
outstanding shares of capital stock of such Subsidiaries which are corporations
have been duly authorized and issued and are fully paid and non-assessable.

       8.9.   ERISA.  The Unfunded Liabilities of all Plans do not in the
aggregate exceed $10,000,000.  Each Plan complies in all material respects with
all applicable requirements of law and regulations, no Reportable Event has
occurred with respect to any Plan, neither the Company nor any other members of
the Controlled Group has withdrawn from any Plan or initiated steps to do so,
and no steps have been taken to terminate any Plan.

       8.10.  Accuracy of Information.  No information, exhibit or report
furnished by the Company or any Subsidiary to any Agent or to any U.S. Lender
in connection with the negotiation of, or compliance with, the U.S. Loan
Documents contained any material misstatement of fact or omitted to state a
material fact or any fact necessary to make the statements contained therein
not misleading.

       8.11.  Regulation-U.  Margin stock (as defined in Regulation U)
constitutes less than 25% of those assets of the Company and the Subsidiaries
which are subject to any limitation on sale, pledge, or other restriction
hereunder.

       8.12.  Material Agreements.  Neither the Company nor any Subsidiary is
in default in the performance, observance or fulfillment of any of the
obligations, covenants or conditions contained in (i) any agreement to which it
is a party, which default would result in a Material Adverse Effect or (ii) any
agreement or instrument evidencing or governing Indebtedness which default
would result in a Material Adverse Effect.

       8.13.  Compliance With Laws.  The Company and the Subsidiaries have
complied in all material respects with all applicable statutes, rules,
regulations, orders and restrictions of any domestic or foreign government or
any instrumentality or agency thereof, having jurisdiction over the conduct of
their respective businesses or the ownership of their respective Properties.
Neither the Company nor any of the Subsidiaries has received any notice to the
effect that it, its operations or the Properties are not in material compliance
with any of the requirements of applicable federal, state or local
environmental, health and safety statutes and regulations, or are the subject
of any federal or state investigation evaluating whether any remedial action is
needed to respond to a release of any toxic or hazardous waste or substance





                                       41
<PAGE>   48
into the environment, whether from the Properties or elsewhere, which in any
case would result in a Material Adverse Effect.

       8.14.  Title to Properties.  Each of the Company and the Subsidiaries
has defensible title to substantially all of its properties and assets, whether
legal or beneficial, free and clear of any and all Liens other than those Liens
permitted by Section 11.5.  The 1996 Engineers' Report refers to and covers all
of the reserves in the Properties as of the Global Effective Date and such
Report covers no reserves other than in such Properties.

       8.15.  Investment Company Act.  Neither the Company nor any Subsidiary
is an "investment company" or a company "controlled" by an "investment
company", within the meaning of the Investment Company Act of 1940, as amended.

       8.16.  Public Utility Holding Company Act.  Neither the Company nor any
Subsidiary is a "holding company" or a "subsidiary company" of a "holding
company", or an "affiliate" of a "holding company" or of a "subsidiary company"
of a "holding company", within the meaning of the Public Utility Holding
Company Act of 1935, as amended.

       8.17.  Post-Retirement Benefits.  The present value of the expected cost
of post-retirement medical and insurance benefits payable by the Company and
its Subsidiaries to its employees and former employees, as estimated by the
Company in accordance with procedures and assumptions deemed reasonable by the
Agents, does not exceed $10,000,000.

       8.18.  Solvency.  As of the Global Effective Date, (i) the Company is
Solvent, (ii) the Consolidated Subsidiaries of the Company on a consolidated
basis are Solvent, (iii) the consolidated Borrowing Base Subsidiaries of the
Company on a consolidated basis are Solvent, and (iv) each Guarantor and its
Consolidated Subsidiaries on a consolidated basis are Solvent.

       8.19.  Environmental Warranties.  In the ordinary course of its
business, the Company conducts an ongoing review of the effect of Environmental
Laws on the business, operations and Properties of the Company and its
Subsidiaries, in the course of which it identifies and evaluates associated
liabilities and costs (including any capital or operating expenditures required
for clean-up or closure of Properties presently owned or operated, any capital
or operating expenditures required to achieve or maintain compliance with
environmental protection standards imposed by law or as a condition of any
license, permit or contract, any related constraints on operating activities,
including any periodic or permanent shutdown of any facility or reduction in
the level of or change in the nature of operations conducted thereat and any
actual or potential liabilities to third parties, including employees, and any
related costs and expenses).  On the basis of this review, the Company has
reasonably concluded that, except as disclosed in writing by the Company to the
U.S. Lenders and the Agents, to the best of its knowledge after due inquiry:

              (a)    all facilities and property (including underlying
       groundwater) owned, leased or operated by the Company or any Subsidiary
       have been, and continue to be, owned, leased or operated by the Company
       or any Subsidiary in material compliance with all Environmental Laws;

              (b)    there have been no past, and there are no pending or
       threatened

                     (i)    claims, complaints, notices or inquiries to, or
              requests for information received by, the Company or any
              Subsidiary with respect to any alleged violation of any
              Environmental Law that, singly or in the aggregate, result in a
              Material Adverse Effect, or

                     (ii)   claims, complaints, notices or inquiries to, or
              requests for information received by, the Company or any
              Subsidiary regarding potential liability under any Environmental
              Law or under any common law theories relating to operations or
              the condition of any facilities or property (including underlying
              groundwater) owned, leased or operated by the Company or any
              Subsidiary that, singly or in the aggregate, result in a Material
              Adverse Effect;





                                       42
<PAGE>   49
              (c)    there have been no Releases of Hazardous Materials at, on
       or under any property now or previously owned or leased by the Company
       or any Subsidiary that, singly or in the aggregate, result in a Material
       Adverse Effect;

              (d)    the Company and each Subsidiary have been issued and are
       in compliance with all permits, certificates, approvals, licenses and
       other authorizations relating to environmental matters and necessary or
       desirable for their businesses except where failure to comply would not
       have a Material Adverse Effect;

              (e)    no property now or previously owned, leased or operated by
       the Company or any Subsidiary is listed or proposed for listing on the
       National Priorities List pursuant to CERCLA, or, to the extent that such
       listing, singly or in the aggregate, results in a Material Adverse
       Effect, on the CERCLIS or on any other federal or state list of sites
       requiring investigation or clean-up;

              (f)    there are no underground storage tanks, active or
       abandoned, including petroleum storage tanks, on or under any property
       now or previously owned, leased or operated by the Company or any
       Subsidiary that, singly or in the aggregate, result in a Material
       Adverse Effect;

              (g)    none of the Company or any Subsidiary has directly
       transported or directly arranged for the transportation of any Hazardous
       Material to any location which is listed or proposed for listing on the
       National Priorities List pursuant to CERCLA, or, to the extent that such
       listing, singly or in the aggregate, results in a Material Adverse
       Effect, on the CERCLIS or on any federal or state list or which is the
       subject of federal, state or local enforcement actions or other
       investigations which may lead to material claims against the Company or
       such Subsidiary for any remedial work, damage to natural resources or
       personal injury, including claims under CERCLA;

              (h)    there are no polychlorinated biphenyls, radioactive
       materials or friable asbestos present at any property now or previously
       owned or leased by the Company or any Subsidiary that, singly or in the
       aggregate, results in a Material Adverse Effect; and

              (i)    no condition exists at, on or under any property now or
       previously owned or leased by the Company or any Subsidiary which, with
       the passage of time, or the giving of notice or both, would give rise to
       material liability under any Environmental Law that, singly or in the
       aggregate, results in a Material Adverse Effect.


                                   ARTICLE IX

                             AFFIRMATIVE COVENANTS

       During the term of this Agreement, unless the Required Lenders shall
otherwise consent in writing:

       9.1.   Financial Reporting.  The Company will maintain a system of
accounting established and administered in accordance with generally accepted
accounting principles, and furnish to the Global Administrative Agent and the
U.S. Lenders:

              (a)    As soon as available and in any event within 90 days after
       the close of each of its fiscal years, an unqualified audit report
       certified by independent certified public accountants, acceptable to the
       Required Lenders, prepared in accordance with generally accepted
       accounting principles on a consolidated basis for itself and its
       Consolidated Subsidiaries, including balance sheets as of the end of
       such period, related profit and loss and reconciliation of surplus
       statements, and a statement of cash flows, accompanied by a certificate
       of said accountants to the effect that, in the course of their
       examination necessary for their certification of the foregoing, they
       have obtained no knowledge of any Default, Unmatured Default or Debt
       Limit Excession, or if, in the





                                       43
<PAGE>   50
       opinion of such accountants, any Default, Unmatured Default or Debt
       Limit Excession shall exist, stating the nature and status thereof.

              (b)    As soon as available and in any event within 45 days after
       the close of the first three quarterly periods of each of its fiscal
       years, for itself and its Consolidated Subsidiaries, consolidated
       unaudited balance sheets as at the close of each such period and
       consolidated profit and loss and reconciliation of surplus statements
       and a statement of cash flows for the period from the beginning of such
       fiscal year to the end of such quarter.

              (c)    Together with the financial statements required under
       clauses (a) and (b), a compliance certificate, in substantially the form
       of Exhibit C hereto, signed by an Authorized Officer and addressing the
       matters set forth therein.

              (d)    Promptly after December 31 of each calendar year,
       commencing December 31, 1996, and in any event not later than March 15
       of the next succeeding calendar year, an Approved Engineers' Report
       prepared as of December 31 of such calendar year, in form and substance
       satisfactory to the Engineering Banks.

              (e)    Promptly after June 30 of each calendar year and in any
       event not later than September 15 of such calendar year, a Company's
       Engineers' Report prepared as of June 30 of such calendar year, in form
       and substance satisfactory to the Engineering Banks.

              (f)    Within 45 days in the case of a Company's Engineers'
       Report and 60 days in the case of an Approved Engineers' Report, of any
       request by the Required Lenders in connection with any (other than the
       scheduled semi-annual redeterminations of the Global Borrowing Base)
       determination of the Global Borrowing Base pursuant to Section 2.3(a),
       an Approved Engineers' Report or a Company's Engineers' Report, as the
       case may be, prepared as of the date of such request, in form and
       substance satisfactory to the Required Lenders.

              (g)    Promptly upon the furnishing thereof to the shareholders
       of the Company copies of all financial statements, reports and proxy
       statements so furnished.

              (h)    Promptly upon the filing thereof, copies of all publicly
       available registration statements and annual, quarterly, monthly or
       other regular reports which the Company or any Subsidiary files with the
       Securities and Exchange Commission.

              (i)    Promptly after December 31 of each calendar year,
       commencing December 31, 1996, and in any event no later than March 15 of
       the next succeeding calendar year, a budget (including specific capital
       expenditures information) through the Termination Date for the Company
       and its Subsidiaries certified by an Authorized Officer of the Company
       and in a format consistent with the Projections and otherwise in form
       and substance satisfactory to the Global Administrative Agent and the
       Arrangers.

              (j)    At the request of the Global Administrative Agent, either
       Arranger, or the Required Lenders promptly after June 30 of each
       calendar year, commencing June 30, 1997, and in any event no later than
       September 15 of such calendar year, an update of the budget described in
       clause (i) of this Section 9.1 in form and substance satisfactory to the
       Global Administrative Agent and signed by an Authorized Officer of the
       Company.

              (k)    Promptly and in any event within 40 days after the close
       of each calendar quarter during each year, a certificate of an
       Authorized Officer certifying to the Global Administrative Agent and the
       U.S. Lenders the Debt/Capitalization Ratio and the calculation thereof
       as of the last day of the immediately preceding calendar quarter.

              (l)    Such other information (including engineering, financial
       and non-financial information) as the Global Administrative Agent,
       either Arranger or any U.S. Lender may from time to time reasonably
       request.





                                       44
<PAGE>   51
       9.2.   Use of Proceeds.  The Company will, and will cause each
Subsidiary to, use the proceeds of the Loans (i) to refinance existing
Indebtedness of the Company and the Subsidiaries or (ii) for the Company's and
the Subsidiaries' general corporate purposes.

       9.3.   Notice of Default, Unmatured Default, Litigation and Material
Adverse Effect.  The Company will give prompt notice in writing to the Global
Administrative Agent, the U.S. Lenders and to all Guarantors of (i) the
occurrence of any Default or Unmatured Default and the steps, if any, being
taken to cure it, (ii) the occurrence of any Debt Limit Excession and the
steps, if any, being taken to cure it, (iii) the occurrence of any adverse
development with respect to any labor controversy, litigation, action or
proceeding described in Section 8.7, or the commencement of any labor,
controversy, litigation, action or proceeding of the type described in Section
8.7 together with copies of all material pleadings relating thereto, and (iv)
the occurrence of any other development, financial or otherwise, which results
in a Material Adverse Effect or might materially adversely affect the ability
of the Company to repay the Obligations.

       9.4.   Conduct of Business.  The Company will, and will cause its
Subsidiaries to, carry on and conduct its respective business in substantially
the same manner and in substantially the same fields of enterprise as it is
presently conducted and, except to the extent permitted by Section 11.2 or
Section 11.3, will, and will cause each Subsidiary to, do all things necessary
to remain duly incorporated or organized, validly existing and in good standing
as a corporation or partnership, as the case may be, in its jurisdiction of
incorporation or organization and maintain all requisite authority to conduct
its business in each jurisdiction in which its business is conducted.

       9.5.   Taxes.  The Company will, and will cause each Subsidiary to, pay
when due all taxes, assessments and governmental charges and levies upon it or
its income, profits or property, and all lawful claims which, if unpaid, might
become a Lien upon any properties of the Company or any Subsidiary, except
those which are being contested in good faith by appropriate proceedings and
with respect to which adequate reserves in accordance with generally accepted
accounting principles have been set aside on its books.

       9.6.   Insurance.  The Company and its Subsidiaries will maintain, with
financially sound and reputable insurers, insurance with respect to their
respective properties and business against such liabilities, casualties, risks
and contingencies and in such types and amounts as customary in the case of
corporations engaged in the same or similar businesses and similarly situated.
Upon the request of the Global Administrative Agent, the Company will furnish
or cause to be furnished to the Global Administrative Agent from time to time a
summary of the insurance coverage of the Company and its Subsidiaries in form
and substance satisfactory to the Required Lenders in their reasonable
judgment, and, if requested, will furnish the Global Administrative Agent
copies of the applicable policies.  In the case of any fire, accident or other
casualty causing loss or damage to any property of the Company or any of its
Subsidiaries, the proceeds of such policies will be used (i) to repair or
replace the damaged property or (ii) to prepay the Obligations, at the election
of the Company.

       9.7.   Compliance with Laws.  The Company will, and will cause each
Subsidiary to, comply with all laws, rules, regulations, orders, writs,
judgments, injunctions, decrees or awards to which it may be subject.

       9.8.   Maintenance of Properties.  The Company will and will cause each
Subsidiary to, do all things necessary to maintain, preserve, protect and keep
its properties in good repair, working order and condition, and make all
necessary and proper repairs, renewals and replacements so that its business
carried on in connection therewith may be properly conducted at all times.

       9.9.   Inspection.  The Company will, and will cause each Subsidiary to,
permit the U.S. Lenders, by their respective representatives and agents, to
inspect any of the properties, corporate books and financial records of the
Company and each Subsidiary, to examine and make copies of the books of
accounts and other financial records of the Company and each Subsidiary, and to
discuss the affairs, finances and accounts of the Company and each Subsidiary
with, and to be advised as to the same by, their respective officers at such
reasonable times and intervals as the U.S. Lenders may designate.  Any
information received by the U.S. Lenders as a result of the foregoing shall be
included in information subject to the confidentiality provisions set forth in
Exhibit J hereto.





                                       45
<PAGE>   52
       9.10.  Operation of Properties.  The Company will, and will cause each
Subsidiary to, preserve, operate and maintain, or cause to be preserved,
operated and maintained, the Properties in a good and workmanlike manner
continuously to their economic limit as a prudent operator in accordance with
good oil and gas industry standards.

       9.11.  Delivery of Guaranties.  At the request of the Global
Administrative Agent, the Company shall at its own expense from time to time
cause (i) each of its Borrowing Base Subsidiaries organized under the laws of
the United States and (ii) after the occurrence of any Material Adverse Effect
or Downgrade Condition, each of its Subsidiaries organized under the laws of
the United States, to deliver to the Global Administrative Agent a duly
executed Guaranty, substantially in the form of Exhibit L, together with such
related documents and opinions as the Global Administrative Agent may request;
provided, however, that no such Non-Borrowing Base Subsidiary shall be required
to deliver such a Guaranty if such Non-Borrowing Base Subsidiary is prohibited
from delivering such Guaranty pursuant to a contractual obligation, acceptable
to the Global Administrative Agent, in its reasonable discretion, arising with
a Person other than a Subsidiary or an Affiliate of the Company existing as of
the date of such request by the Global Administrative Agent.

       9.12.  Environmental Covenant.  The Company will, and will cause each
Subsidiary to,

              (a)    use, operate and maintain all of its facilities and
       properties in material compliance with all Environmental Laws, keep all
       necessary permits, approvals, certificates, licenses and other
       authorizations relating to environmental matters in effect and remain in
       material compliance therewith, and handle all Hazardous Materials in
       material compliance with all applicable Environmental Laws;

              (b)    (i) promptly notify the Global Administrative Agent and
       provide copies upon receipt of all material written claims, complaints,
       notices, liens or inquiries relating to the condition of its facilities
       and properties or compliance with Environmental Laws, (ii) within ninety
       (90) days have dismissed with prejudice any actions or proceedings
       relating to compliance with Environmental Laws which could reasonably be
       expected to result in liability to the Company and its Subsidiaries in
       excess of ten percent (10%) of the Company's Consolidated Tangible Net
       Worth; and (iii) diligently pursue cure of any material underlying
       environmental problem which forms the basis of any such claim,
       complaint, notice, lien, inquiry, proceeding or action; and

              (c)    provide such information and certifications which either
       of the Arrangers may reasonably request from time to time to evidence
       compliance with this 9.12.

       9.13.  Further Assurances.  The Company will cure and will cause its
respective Subsidiaries to cure promptly any defects in the creation and
issuance of any Obligations and the execution and delivery of any Guaranty.
The Company and each Subsidiary will at its expense promptly execute and
deliver to the Global Administrative Agent upon request all such other and
further reasonable documents, agreements and instruments in compliance with, or
accomplishment of, the covenants and agreements of the Company and such
Subsidiary in any U.S. Loan Document.


                                   ARTICLE X

                              FINANCIAL COVENANTS

       10.1.  Consolidated Tangible Net Worth.  The Company will maintain
Consolidated Tangible Net Worth of not less than the sum of (i) $825,000,000,
plus (ii) the product of 0.50 times the sum of Consolidated Net Income for each
calendar quarter beginning with the calendar quarter ending June 30, 1996
during which Consolidated Net Income is greater than $0, plus (iii) the product
of 0.50 times the proceeds of the sale by the Company and its Subsidiaries of
securities (other than securities constituting Indebtedness) net of reasonable
incidental, brokerage and legal costs actually paid to third parties (which
proceeds, in the event of a pooling of interest transaction, shall be deemed to
be one-half of the net addition to the Company's consolidated balance sheet).





                                       46
<PAGE>   53
       10.2.  Ratio of EBITDDA to Consolidated Interest.  The Company shall not
permit the ratio of (i) EBITDDA to (ii) Consolidated Interest Expense for any
four consecutive calendar quarters ending on the last day of any calendar
quarter to be less than 3.70 to 1.0.


                                   ARTICLE XI

                               NEGATIVE COVENANTS

       11.1.  Indebtedness.  The Company will not, nor will it permit any
Borrowing Base Subsidiary to, create, incur or suffer to exist any
Indebtedness, except:

              (a)    Borrowing Base Debt;

              (b)    Excluded Principal Debt;

              (c)    The Guaranteed Obligations permitted under Section 11.4
       (whether or not then payable), and intercompany Indebtedness pursuant to
       Investments by the Company permitted by Sections 11.10(d), (e), (f) and
       (g);

              (d)    Indebtedness existing on the date hereof and described in
       Schedule 11.1 hereto;

              (e)    Indebtedness of the type referred to in clause (vi) of the
       definition of Indebtedness;

              (f)    Indebtedness of the type referred to in clause (vii) of
       the definition of Indebtedness in a maximum aggregate amount not in
       excess of $50,000,000; provided such Indebtedness is otherwise permitted
       pursuant to Section 11.11;

              (g)    Indebtedness of the type referred to in clause (viii) of
       the definition of Indebtedness in a maximum aggregate amount not in
       excess of $50,000,000;

              (h)    Other Indebtedness of Apache Egypt, Phoenix Egypt or their
       successors to IFC in a maximum aggregate principal amount of
       $75,000,000, together with interest, fees and expenses related thereto;

              (i)    Indebtedness of the type referred to in clause (v) of the
       definition of Indebtedness in a maximum aggregate amount not in excess
       of $5,000,000; and

              (j)    Additional Indebtedness of the Company not included in the
       foregoing clauses (a) through (i) in an aggregate principal amount not
       exceeding $5,000,000.

       11.2.  Merger.  The Company will not, nor will it permit any Borrowing
Base Subsidiary to, merge or consolidate with or into any other Person or
Persons unless:

              (i)    the Company or such Borrowing Base Subsidiary, as the case
       may be, is the surviving entity of such merger (and if a merger between
       the Company and any Borrowing Base Subsidiary, the Company is the
       surviving entity) and no Change of Control occurs, or, with respect to
       any merger or consolidation in which any Person other than the Company
       or any Borrowing Base Subsidiary is the surviving entity, such Person
       becomes, as a result of such merger or consolidation, a Borrowing Base
       Subsidiary of which the Company owns, directly or indirectly, 100% of
       the outstanding capital stock, free and clear of all Liens, other than
       Liens permitted by Section 11.5 and, with respect to any merger or
       consolidation involving MW Petroleum or any other Guarantor, such Person
       shall at its own expense deliver to the Global Administrative Agent a
       duly executed





                                       47
<PAGE>   54
       Guaranty, substantially in the form of Exhibit L, together with such
       related documents and opinions as the Global Administrative Agent may
       request; and

              (ii)   after giving effect to such merger or consolidation, no
       Default or Unmatured Default shall occur and be continuing.

       11.3.  Sales of Properties or Borrowing Base Subsidiaries.  The Company
will not, nor will it permit any of its Borrowing Base Subsidiaries to, lease,
sell, transfer, convey, assign, issue or otherwise dispose of any of its
Properties or any Borrowing Base Subsidiary to any other Person, whether in one
transaction or in a series of transactions, except if the transaction or
transactions fall into one of the following categories:

              (i)    Sales of Hydrocarbon inventory and severed oil and gas in
       the ordinary course of business.

              (ii)   Sales of Properties (other than Hydrocarbon inventory and
       severed oil and gas in the ordinary course of business) and Sales of any
       Borrowing Base Subsidiary which have an aggregate fair market value (or,
       with respect to the Sale of a Borrowing Base Subsidiary, the amount
       allocated to such Sale pursuant to Section 2.3(f)) not in excess of
       $50,000,000 for all such Sales permitted pursuant to this clause (ii)
       during any period occurring between successive dates of determination of
       the Global Borrowing Base pursuant to Section 2.3.

              (iii)  Sales of Properties (other than sales of Hydrocarbon
       inventory and severed oil and gas in the ordinary course of business)
       and Sales of Borrowing Base Subsidiaries designated pursuant to this
       Section 11.3(iii) by notice of the Borrower to the Global Administrative
       Agent which have an aggregate fair market value (or, with respect to the
       Sale of a Borrowing Base Subsidiary, the amount allocated to such Sale
       pursuant to Section 2.3(f)) not in excess of $50,000,000 for all such
       Sales during any period occurring between successive dates of
       determination of the Global Borrowing Base pursuant to Section 2.3;
       provided, however, that concurrently with any such Sale the Global
       Borrowing Base shall be reduced pursuant to Section 2.3(f), and the
       Company shall make any mandatory prepayment required pursuant to Section
       4.1(a)(iii).

              (iv)   Sales of Properties (other than sales of Hydrocarbon
       inventory and severed oil and gas in the ordinary course of business)
       and Sales of Borrowing Base Subsidiaries which are not described in the
       foregoing clause (ii) or (iii) if the Required Lenders give prior
       written consent to such Sale in the exercise of their sole discretion;
       provided, however, that concurrently with any such Sale (A) the Global
       Borrowing Base shall be reduced pursuant to Section 2.3(f), and (B) the
       Company shall make a mandatory prepayment pursuant to Section
       4.1(a)(iii).  In the event the Company or any Subsidiary proposes to
       consummate a Sale of any Property or any Borrowing Base Subsidiary
       pursuant to this Section, the Company shall promptly notify the Global
       Administrative Agent, which in turn shall notify the Engineering Banks,
       the Australian Administrative Agent (for its own behalf and on behalf of
       the Australian Lenders), the Canadian Administrative Agent (for its own
       behalf and on behalf of the Canadian Lenders) and the U.S. Lenders, of
       such proposed Sale, which notice shall describe such Property or
       Borrowing Base Subsidiary to be included in such Sale and, if known, the
       proposed terms of such Sale.  In connection therewith the Company shall
       deliver to the Global Administrative Agent, which in turn shall notify
       the Engineering Banks, the Australian Administrative Agent (for its own
       behalf and on behalf of the Australian Lenders), the Canadian
       Administrative Agent (for its own behalf and on behalf of the Canadian
       Lenders) and the U.S. Lenders, such reports and information concerning
       such Property or such Borrowing Base Subsidiary (which may include in
       the Engineering Banks' sole discretion an Approved Engineers' Report or
       a Company's Engineers' Report as of such date) and such Sale as each of
       the Engineering Banks shall deem appropriate in its sole discretion.
       Promptly following receipt of such report and information, the
       Engineering Banks shall make a recommendation (and the Global
       Administrative Agent shall notify the U.S. Lenders, the Australian
       Administrative Agent (for its own behalf and on behalf of the Australian
       Lenders) and the Canadian Administrative Agent (for its own behalf and
       on behalf of the Canadian Lenders) in writing of such recommendation) of
       whether they approve of such Sale and, if so approved, the amount of the
       reduction in the Global Borrowing Base as a result of such Sale pursuant
       to Section 2.3(f)); provided, however, that in





                                       48
<PAGE>   55
       no event shall the Global Borrowing Base be reduced by an amount in
       excess of the proceeds of such Sale net of costs, charges, and taxes
       incidental to such Sale, as provided in Section 2.3(f) for Sales
       pursuant to clause (iii) of Section 11.3.  Each Combined Lender shall
       notify the Global Administrative Agent in writing, by telex or by
       facsimile transmission whether it approves or disapproves (which
       approval or disapproval shall be made by each Combined Lender in the
       exercise of its sole discretion) of such recommendation and of such Sale
       within ten (10) Business Days of its receipt of such recommendation from
       the Global Administrative Agent, the Australian Administrative Agent or
       the Canadian Administrative Agent, respectively; provided, that any
       Combined Lender which does not so notify the Global Administrative Agent
       shall be deemed to have approved of such Sale and such reduction in the
       Global Borrowing Base.  Upon the approval of the Combined Required
       Lenders, the Global Administrative Agent shall promptly notify the
       Company, the Australian Administrative Agent and the Canadian
       Administrative Agent of such approval and the amount of the reduction in
       the Global Borrowing Base as a result of such Sale.

              (v)    A transfer, conveyance or assignment to the Company or a
       Subsidiary of Properties as a result of a merger or consolidation
       permitted pursuant to Section 11.2.

provided, however, notwithstanding the foregoing, Sales by the Australian
Borrowers permitted under clauses (ii) and (iii) of this Section shall not have
an aggregate fair market value in excess of $5,000,000 for all such Sales
during any period occurring between successive dates of determination of the
Global Borrowing Base pursuant to Section 2.3.

Anything herein contained to the contrary notwithstanding, the Company will
not, nor will it permit any Borrowing Base Subsidiary to, consummate any Sale
otherwise permitted hereunder if it receives therefor consideration (a) other
than cash, other consideration readily convertible to cash or Hydrocarbon
Interests or (b) which is less than the fair market value of the relevant
property or asset.

       11.4.  Guaranteed Obligations.  The Company will not, nor will it permit
any Borrowing Base Subsidiary to, make or suffer to exist any Guaranteed
Obligation (including, without limitation, any Guaranteed Obligation with
respect to the obligations of a Non-Borrowing Base Subsidiary) in an aggregate
amount for all such Persons and Guaranteed Obligations (considering Guaranteed
Obligations for all such Persons without duplication) as of any date of
determination in excess of $100,000,000, except:

              (a)    by endorsement of instruments for deposit or collection in
       the ordinary course of business;

              (b)    Guaranteed Obligations of the Company to the IFC existing
       as of the date hereof relating to Apache Egypt, Phoenix Egypt or their
       successors not exceeding $75,000,000 in the aggregate principal amount,
       together with interest, fees and expenses related thereto;

              (c)    Guaranteed Obligations of the Company and any of its
       Subsidiaries to or in respect of Producers Energy which when aggregated
       with the Investments of the Company and any of its Subsidiaries
       permitted with respect to Producers Energy pursuant to subsection
       11.10(c) do not exceed $30,000,000 in the aggregate;

provided, however, that any obligation which is a Guaranteed Obligation of the
Company or one or more of its Borrowing Base Subsidiaries for purposes of this
Agreement shall not be Indebtedness of such Person for purposes hereof; and
provided, further, that the term "Guaranteed Obligation" shall not include any
obligation of any Person which constitutes Indebtedness of the Company or any
of its Borrowing Base Subsidiaries.

       11.5.  Liens.  The Company will not, nor will it permit any Borrowing
Base Subsidiary to, create, incur, or suffer to exist any Lien in, of or on (i)
any of the Company's and the Borrowing Base Subsidiaries' consolidated assets,
revenues and properties securing an amount greater than $10,000,000 in the
aggregate for all such Liens or (ii) any of the Properties, except in either
case:





                                       49
<PAGE>   56
              (a)    Liens for taxes, assessments or governmental charges or
       levies on its property if the same shall not at the time be delinquent
       or thereafter can be paid without penalty, or are being contested in
       good faith and by appropriate proceedings and for which adequate
       reserves in accordance with generally accepted accounting principles
       shall have been set aside on its books.

              (b)    Liens imposed by law, such as carriers', warehousemen's
       and mechanics' liens and other similar liens arising in the ordinary
       course of business which secure obligations not more than 60 days past
       due or which are being contested in good faith by appropriate
       proceedings and for which adequate reserves in accordance with generally
       accepted accounting principles shall have been set aside on its books.

              (c)    Liens arising out of pledges or deposits under worker's
       compensation laws, unemployment insurance, old age pensions, or other
       social security or retirement benefits, or similar legislation.

              (d)    Utility easements, building restrictions and such other
       encumbrances or charges against real property as are of a nature
       generally existing with respect to properties of a similar character and
       which do not in any material way affect the marketability of the same or
       interfere with the use thereof in the business of the Company or the
       Subsidiaries, as the case may be.

              (e)    Liens existing on the date hereof described in Schedule
       11.1 and securing the Indebtedness described in Schedule 11.1 hereto or
       otherwise permitted in connection with Indebtedness of the type
       described in Section 11.1(d) consented to by the Required Lenders in the
       exercise of their sole discretion.

              (f)    Liens arising under operating agreements in respect of
       obligations which are not yet due or which are being contested in good
       faith by appropriate proceedings.

              (g)    Liens reserved in oil, gas and/or mineral leases for bonus
       or rental payments and for compliance with the terms of such leases.

              (h)    Liens pursuant to partnership agreements, oil, gas and/or
       mineral leases, farm-out agreements, division orders, contracts for the
       sale, delivery, purchase, exchange, or processing of oil, gas and/or
       other hydrocarbons, unitization and pooling declarations and agreements,
       operating agreements, development agreements, area of mutual interest
       agreements, forward sales of Hydrocarbons, and other agreements which
       are customary in the oil, gas and other mineral exploration, development
       and production business and in the business of processing of gas and gas
       condensate production for the extraction of products therefrom.

              (i)    Liens securing the Indebtedness permitted in connection
       with Section 11.1(i).

              (j)    Liens associated with the pledging of securities of
       Subsidiaries which are not Borrowing Base Subsidiaries.

       11.6.  Restricted Payments, etc.  On and at all times after the Global
Effective Date the Company will not and will not permit any of its Borrowing
Base Subsidiaries to make any optional payment or prepayment on, or redemption
of, or redeem, purchase or defease prior to its stated maturity, any
Indebtedness other than Indebtedness incurred under this Agreement or the other
U.S. Loan Documents during the occurrence and continuation of any Debt Limit
Excession or if giving effect to such action would result in a Default or
Unmatured Default; and the Company will not, and will not permit any Borrowing
Base Subsidiary to, make any deposit for any of the foregoing purposes.

       11.7.  Transactions with Affiliates.  The Company will not, and will not
permit any of its Borrowing Base Subsidiaries to, enter into, or cause, suffer
or permit to exist any arrangement or contract with any of its other Affiliates
unless such arrangement is either (i) fair and equitable to the Company or such
Borrowing Base Subsidiary, as the case may be, or (ii) is not of a sort which
would not be entered into by a prudent Person in the position of the Company or
such Borrowing Base Subsidiary with, or which is on terms which are less
favorable than are obtainable from, any Person





                                       50
<PAGE>   57
which is not one of its Affiliates; provided, however, that this Section shall
not apply to Apache Series 1996-A Trust, a Delaware business trust, Apache
Offshore Investment Partnership, a Delaware general partnership, Apache
Offshore Petroleum Limited Partnership, a Delaware limited partnership, Apache
Petroleum Limited Partnership 1980-I, a Minnesota limited partnership, Apache
Petroleum Limited Partnership 1980-II, a Minnesota limited partnership, Main
Pass 151 Pipeline Company, a Texas general partnership, Tranpache Partnership,
a Texas general partnership, and Apache 681/682 Joint Venture, a Texas joint
venture.

       11.8.  Negative Pledges, etc.  The Company will not, and will not permit
any of its Borrowing Base Subsidiaries to, enter into, on or at any time after
the Global Effective Date, any agreement (excluding this Agreement and any
other Global Loan Document) directly or indirectly prohibiting the creation,
assumption or perfection of any Lien upon its properties, revenues or assets,
whether now owned or hereafter acquired, restricting any loans, advances or
other Investments to or in the Company or any of its Borrowing Base
Subsidiaries, restricting the capitalization of the Company or any Borrowing
Base Subsidiary, restricting the ability of any Borrowing Base Subsidiary to
make dividend payments or other distributions or payments (by way of dividends,
advances, repayments of loans or advances, reimbursements or otherwise) or
restricting the ability of the Company or any Borrowing Base Subsidiary to
amend or otherwise modify this Agreement or any other U.S. Loan Document;
provided, however, that, notwithstanding the foregoing, the terms and
conditions of the Global Loan Documents shall not cause Apache Canada, Apache
Energy Limited or Apache Oil Australia, respectively, or any of their
Subsidiaries to violate the terms and provisions of this Section.

       11.9.  Regulation U Acquisitions.  The Company will not, nor will it
permit any Borrowing Base Subsidiary to, use any of the proceeds of the Loans
to purchase or carry any "margin stock" (as defined in Regulation U) or to make
any Acquisition, except any of the following:

              (i)    Acquisitions not involving "margin stock", where such
       Acquisition shall have been approved or consented to by the board of
       directors or similar governing entity of the Person being acquired; or

              (ii)   Acquisitions involving "margin stock" where such
       Acquisitions shall have been approved or consented to by the board of
       directors or similar governing entity of the Person being acquired; or

              (iii)  Acquisitions of not more than 15% of the outstanding
       equity securities of any issuer, whether or not such securities are
       "margin stock";

provided, however, that the amount paid by the Company to consummate all
Acquisitions of the type described in clause (iii) shall not exceed $15,000,000
in the aggregate.  For purposes of this Section 11.9, the merger of the Company
or any Borrowing Base Subsidiary as permitted under Section 11.2 shall be
deemed to be an Acquisition not involving "margin stock".

       11.10. Investments.  The Company will not, and will not permit any of
its Borrowing Base Subsidiaries to make, incur, assume or suffer to exist any
Investment in any other Person, except:

              (a)    Investments existing on the Global Effective Date and
       identified in Schedule 11.10;

              (b)    Cash Equivalent Investments;

              (c)    without duplication, Investments permitted as Indebtedness
       pursuant to Section 11.1 and Investments permitted as Guaranteed
       Obligations pursuant to Section 11.4 (including, without limitation,
       Investments of the Company and any of its Borrowing Base Subsidiaries in
       Producers Energy which when aggregated with the Guaranteed Obligations
       of the Company and any of its Subsidiaries permitted pursuant to
       subsection 11.4(c) do not exceed $30,000,000 in the aggregate);

              (d)    in the ordinary course of business, Investments by the
       Company or any Borrowing Base Subsidiary in any Guarantor or Subsidiary;





                                       51
<PAGE>   58
              (e)    Investments in any Person in connection with (i) the
       acquisition, exploration, drilling or development of Hydrocarbon
       Interests, or (ii) costs incurred in connection with gathering,
       processing, transporting and marketing production from Hydrocarbon
       Interests;

              (f)    Investments resulting from a merger or consolidation
       permitted pursuant to Section 11.2;

              (g)    Other Investments in an aggregate amount not to exceed
       $30,000,000 during any calendar year;

provided, however, that

              (1)    any Investment which when made complies with the
       requirements of the definition of the term "Cash Equivalent Investment"
       may continue to be held notwithstanding that such Investment if made
       thereafter would not comply with such requirements; and

              (2)    no Investment otherwise permitted by clause (d), (e), (f)
       or (g) shall be permitted to be made if, immediately before or after
       giving effect thereto, any Default would have occurred and be
       continuing.

       11.11. Hedging Contracts.  The Company will not and will not permit any
of its Borrowing Base Subsidiaries to enter into or become obligated under any
contract for sale for future delivery of oil or gas from the Properties,
whether or not the subject oil or gas is to be delivered, hedging contract,
forward contract, commodity swap agreement, futures contract or other similar
agreement except for such contracts which in the aggregate do not cover at any
time a volume of oil or gas, as the case may be, equal to more than 75% of the
projected production of oil or gas, as the case may be, from the Properties for
the term covered by such contracts.

       11.12. Approval of Consents.  In any instance in this Article XI  where
it is provided that an action may be taken by the Company or a Borrowing Base
Subsidiary only with the approval or consent of the Required Lenders, the
failure by a U.S. Lender to respond to a request for such approval or consent
within 10 Business Days of receipt of a request for such approval or consent
(or such other length of time as specified by the Global Administrative Agent
in such request) shall be deemed an approval of, or consent to, such request.


                                  ARTICLE XII

                                    DEFAULTS

       The occurrence of any one or more of the following events shall
constitute a "Default":

       12.1.  Breach of Warranties and Misleading Statements.  Any
representation or warranty made or deemed made pursuant to Article VIII, by or
on behalf of the Company or any Subsidiary to the U.S. Lenders, the Global
Administrative Agent, the Co-Agent, the Arrangers or the Engineering Banks
under or in connection with this Agreement, any Loan, any U.S. Loan Document,
or any certificate, or, information delivered in connection with this
Agreement, any other U.S. Loan Document is breached or shall be false,
incomplete or incorrect on the date as of which made or deemed made in any
material respect.

       12.2.  Nonpayment of Notes, Fees and other Obligations.  Nonpayment of
principal of any Note when due; or nonpayment of interest upon any Note or of
any facility fee or other Obligation under any of the U.S. Loan Documents
within three (3) days after the same becomes due.

       12.3.  Breach of Certain Covenants.  Except as set forth in the
subsequent sentence, the breach by the Company of any of the terms or
provisions of Section 9.2, 9.3, 9.13 or Article X or Article XI.  The breach by
the Company of any of the terms or provisions of (i) Section 11.1 pertaining to
Indebtedness of the type referred to in





                                       52
<PAGE>   59
clause (vii) of the definition of Indebtedness or (ii) Section 11.10(b), which
is not remedied within 3 days of such occurrence.

       12.4.  Default Under Australian Loan Documents or Canadian Loan
Documents.  A "Default" as defined in the Australian Loan Documents or Canadian
Loan Documents occurs; provided that the occurrence of an "Unmatured Default"
as defined in the Australian Loan Documents or Canadian Loan Documents shall
constitute an Unmatured Default under the U.S. Loan Documents.

       12.5.  Non-Compliance with this Agreement.  The breach by the Company
(other than a breach which constitutes a Default under any other Section of
this Article XII) of any of the terms, provisions or covenants of this
Agreement which is not remedied within 30 days after written notice from the
Global Administrative Agent or any U.S. Lender.

       12.6.  Cross-Defaults.  Failure of the Company or any Borrowing Base
Subsidiary to pay any Indebtedness in excess of $25,000,000 in aggregate
principal amount when due; or the default by the Company or any Borrowing Base
Subsidiary in the performance of any term, provision or condition contained in
any agreement under which any such Indebtedness was created or is governed, the
effect of which is to cause, or to permit the holder or holders of such
Indebtedness to cause, such Indebtedness to become due prior to its stated
maturity; or any such Indebtedness of the Company or any Borrowing Base
Subsidiary shall be declared to be due and payable or required to be prepaid
(other than by a regularly scheduled payment) prior to the stated maturity
thereof; or the Company or any Borrowing Base Subsidiary shall not pay, or
shall admit in writing its inability to pay, such Indebtedness generally as it
becomes due.

       12.7.  Voluntary Dissolution and Insolvency Proceedings and Actions.
The Company or any Subsidiary shall (a) have an order for relief entered with
respect to it under Federal bankruptcy laws as now or hereafter in effect, (b)
make an assignment for the benefit of creditors, (c) apply for, seek, consent
to, or acquiesce in, the appointment of a receiver, custodian, trustee,
examiner, liquidator or similar official for it or any substantial part of its
property, (d) institute any proceeding seeking an order for relief under
Federal bankruptcy laws as now or hereafter in effect or seeking to adjudicate
it a bankrupt or insolvent, or seeking dissolution, winding up, liquidation,
reorganization, arrangement, adjustment or composition of it or its debts under
any law relating to bankruptcy, insolvency or reorganization or relief of
debtors or fail to file an answer or other pleading denying the material
allegations of any such proceeding filed against it, (e) take any corporate or
partnership action to authorize or effect any of the foregoing actions set
forth in this Section 12.7 or (f) fail to contest in good faith any appointment
or proceeding described in Section 12.8; provided, however, that if any of the
foregoing shall occur with respect to any Non-Borrowing Base Subsidiary, it
shall not constitute a Default hereunder unless it shall result in a Material
Adverse Effect; and, provided, further, that, if any of the foregoing shall
occur with respect to Apache Egypt, it shall not constitute a Default
hereunder.

       12.8.  Involuntary Insolvency Proceedings or Dissolution.  Without the
application, approval or consent of the Company or any Subsidiary, a receiver,
trustee, examiner, liquidator or similar official shall be appointed for such
Person or any substantial part of its property, or a proceeding described in
Section 12.7(d) shall be instituted against the Company or any Subsidiary and
such appointment continues undischarged or such proceeding continues
undismissed or unstayed for a period of 30 consecutive days; provided, however,
that if any of the foregoing shall occur with respect to any Non-Borrowing Base
Subsidiary, it shall not constitute a Default hereunder unless it results in a
Material Adverse Effect; and, provided, further, that, if any of the foregoing
shall occur with respect to Apache Egypt, it shall not constitute a Default
hereunder.

       12.9.  Condemnation.  Any court, government or governmental agency shall
condemn, seize or otherwise appropriate, or take custody or control of all or
any portion of the Properties with a fair market value in excess of $50,000,000
in the aggregate for all such Properties.

       12.10. Judgments.  The Company or any Subsidiary shall fail within 45
days to pay, bond or otherwise discharge any uninsured portion of any judgment
or order for the payment of money in excess of $10,000,000 in the aggregate for
all such judgments and orders, which is not stayed on appeal or is not
otherwise being appropriately





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<PAGE>   60
contested in good faith; provided, however, that if any of the foregoing shall
occur with respect to any Non-Borrowing Base Subsidiary, it shall not
constitute a Default hereunder unless it results in a Material Adverse Effect;
and, provided, further, that, if any of the foregoing shall occur with respect
to Apache Egypt, it shall not constitute a Default hereunder.

       12.11. Plans.  The Unfunded Liabilities of all Plans shall exceed in the
aggregate $10,000,000.

       12.12. Other Defaults Under U.S. Loan Documents.  The occurrence of any
default by any party to the U.S. Loan Documents (other than any Agent or
Lender) under any U.S. Loan Document (other than this Agreement or the Notes)
or the breach of any of the terms or provisions by any party to the U.S. Loan
Documents (other than any Agent or Lender) of any U.S. Loan Document (other
than this Agreement or the Notes) which default or breach is not remedied
within 30 days of such occurrence.

       12.13. Failure of U.S. Loan Documents.  Any U.S. Loan Document shall
fail to remain in full force or effect or shall be declared null and void, or
any action shall be taken to discontinue or to assert the invalidity or
unenforceability of any U.S. Loan Document.

       12.14. Change in Control.  Any Change in Control shall occur.


                                  ARTICLE XIII

             ACCELERATION, WAIVERS, AMENDMENTS, REMEDIES; RELEASES

       13.1.  Acceleration.  If any Default described in Section 12.7 or 12.8
occurs with respect to the Company, (a) the obligations of the U.S. Lenders to
make Loans hereunder shall automatically terminate, (b) the Commitments of each
of the U.S. Lenders shall terminate and the Obligations shall immediately
become due and payable without any election or action on the part of any Agent
or any U.S. Lender and without presentment, demand, protest or notice of any
kind, including without notice of acceleration or notice of intent to
accelerate, all of which the Company and each Guarantor each hereby expressly
waives, and (c) the Agents and the U.S. Lenders and each of them shall be able
to exercise any rights available to it or them under the U.S. Loan Documents or
by law.  If any other Default occurs, (x) the Required Lenders may terminate or
suspend the obligations of the U.S. Lenders to make Loans hereunder, or reduce
the Commitment of each of the U.S. Lenders to zero and declare the Obligations
to be due and payable, or both, whereupon the Obligations shall become
immediately due and payable, without presentment, demand, protest or notice of
any kind, including without notice of acceleration or notice of intent to
accelerate, all of which the Company and each Guarantor each hereby expressly
waives, and (y) the Agents and the U.S. Lenders and each of them shall be able
to exercise any rights available to it or them under the U.S. Loan Documents,
the Guaranty or by law.  The Global Administrative Agent hereby agrees, at the
written direction of the Required Lenders, subject to the provisions of Article
XV, to exercise any of the foregoing rights available to it.

       13.2.  Amendments.  Subject to the provisions of this Article XIII, the
Required Lenders (or the Global Administrative Agent with the consent in
writing of the Required Lenders) and the Company may enter into agreements
supplemental hereto for the purpose of adding or elucidating any provisions to
the U.S. Loan Documents or changing in any manner the rights and remedies of
the U.S. Lenders or the Company hereunder or waiving any Default hereunder;
provided, however that Sections 2.3 and the related definitions in Section 1.1
shall not be changed without the prior written consent of the Combined Required
Lenders; provided further, that no such supplemental agreement shall, without
the consent of each U.S. Lender affected thereby:

              (a)    Extend the maturity of any Loan, Note or payment under a
       Guaranty, or reduce the principal amount of any of them, or reduce the
       rate or extend the time of payment of interest or fees thereon.

              (b)    Reduce the percentage specified in the definition of
       Required Lenders.





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<PAGE>   61
              (c)    Extend the Termination Date or reduce the amount or extend
       the payment date for, the mandatory payments required under Section 4.1
       or increase the amount of the Commitment of any U.S. Lender hereunder or
       permit the Company to assign its rights or obligations under this
       Agreement or under any other U.S. Loan Document.

              (d)    Amend this Section 13.2.

No amendment of any provision of this Agreement relating to any Agent shall be
effective without the written consent of such Agent.  The Global Administrative
Agent may waive payment of the fee required under Section 17.3(b) without
obtaining the consent of any of the U.S. Lenders.

       13.3.  Preservation of Rights.  All remedies contained in the U.S. Loan
Documents or afforded by law shall be cumulative and all shall be available to
the Agents and the U.S. Lenders until the Obligations have been paid in full.
No delay or omission of the U.S. Lenders, the Agents or any of them to exercise
any right under the U.S. Loan Documents shall impair such right or be construed
to be a waiver of any Default or an acquiescence therein, and the making of a
Loan notwithstanding the existence of a Default or the inability of the Company
to satisfy the conditions precedent to such Loan shall not constitute any
waiver or acquiescence.  Any single or partial exercise of any such right shall
not preclude other or further exercise thereof or the exercise of any other
right, and no waiver, amendment or other variation of the terms, conditions or
provisions of the U.S. Loan Documents whatsoever shall be valid unless in
writing signed by the U.S. Lenders and the Agents required pursuant to Section
13.2, and then only to the extent specifically set forth in such writing.
Notwithstanding the foregoing or any other provision of this Agreement, each of
the various written consents provided by the Global Administrative Agent on
behalf of the U.S. Lenders, or any group of U.S. Lenders, with respect to the
March 1995 Agreement shall remain in full force and effect according to its
terms.


                                  ARTICLE XIV

                               GENERAL PROVISIONS

       14.1.  Survival of Representations.  All representations and warranties
of the Company, MW Petroleum and any other Subsidiary contained in the July
1991 Agreement, the April 1992 Agreement, the April 1994 Agreement, the March
1995 Agreement, this Agreement, or in any other U.S. Loan Document shall
survive the delivery of the Notes and the making of the Loans herein
contemplated until all the Obligations have been paid and this Agreement has
been terminated.

       14.2.  Governmental Regulation.  Anything contained in this Agreement to
the contrary notwithstanding, no U.S. Lender shall be obligated to extend
credit to the Company in violation of any limitation or prohibition provided by
any applicable statute or regulation.

       14.3.  Taxes.  Any taxes (excluding income taxes) or other similar
assessments or charges payable or ruled payable by any governmental authority
in respect of the U.S. Loan Documents shall be paid by the Company, together
with interest and penalties, if any.

       14.4.  Headings.  Article and section headings in the U.S. Loan
Documents are for convenience of reference only, and shall not govern the
interpretation of any of the provisions of the U.S. Loan Documents.

       14.5.  Entire Agreement.  The U.S. Loan Documents embody the entire
agreement and understanding among the Company, the Agents and the U.S. Lenders
and supersede all prior agreements and understandings among the Company, the
Agents and the U.S. Lenders relating to the subject matter thereof.

       14.6.  Several Obligations.  The respective obligations of the U.S.
Lenders hereunder are several and not joint and no U.S. Lender shall be the
partner or agent of any other (except to the extent to which an Agent is
authorized to





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<PAGE>   62
act as such).  The failure of any U.S. Lender to perform any of its obligations
hereunder shall not relieve any other U.S. Lender from any of its obligations
hereunder.  This Agreement is not intended to, and shall not be construed so as
to, confer any right or benefit upon any Person other than the parties to this
Agreement and their respective successors and assigns.

       14.7.  Reimbursement of Costs and Expenses; Indemnification.

       (a)    Reimbursement of Costs and Expenses.  The Company shall reimburse
each Agent for any reasonable costs and out-of-pocket expenses (including fees
and expenses of consultants and attorneys' fees and expenses for such Agent)
paid or incurred by such Agent in connection with the preparation, review,
execution, delivery, amendment, modification and administration of the U.S.
Loan Documents including, without limitation, the fees incurred by such Agent
in connection with its initial evaluation of the Properties.  The Company shall
reimburse each Agent and the U.S. Lenders for any reasonable costs and out-of-
pocket expenses (including attorneys' fees and expenses for the Agent and the
U.S. Lenders) paid or incurred by any Agent or any U.S. Lender in connection
with the collection and enforcement of the U.S. Loan Documents.

       (b)    Indemnification.  In consideration of the execution and delivery
of this Agreement by each U.S. Lender and the extension of the Commitments, the
Company hereby indemnifies, exonerates and holds each Agent and each U.S.
Lender, and their respective directors, agents, officers and employees
("Indemnified Persons") free and harmless from and against any and all losses,
claims, damages, penalties, judgments, liabilities, actions, suits, costs and
expenses (including, without limitation, all expenses of litigation or
preparation therefor whether or not any Agent or any U.S. Lender or any
Indemnified Person is a party thereto and all other attorneys' fees and
disbursements) ("Claims") which any of them may pay or incur as a result of,
arising out of, or relating to,

              (i)    this Agreement, the other U.S. Loan Documents, the
       transactions contemplated hereby or thereby;

              (ii)   the direct or indirect application or proposed application
       of the proceeds of any Loan hereunder;

              (iii)  any transaction financed or to be financed in whole or in
       part, directly or indirectly, with the proceeds of any Loan;

              (iv)   any investigation, litigation or proceeding related to any
       acquisition or proposed acquisition by the Company or any of its
       Subsidiaries of all or any portion of the stock or assets of any Person,
       whether or not any Agent or any U.S. Lender is party thereto;

              (v)    any investigation, litigation or proceeding related to any
       environmental cleanup, audit, compliance or other matter relating to any
       Environmental Law or the condition of any facility or property owned,
       leased or operated by the Company or any Subsidiary;

              (vi)   the presence on or under, or the escape, seepage, leakage,
       spillage, discharge, emission, discharging or releases from, any
       facility or property owned, leased or operated by the Company or any
       Subsidiary thereof of any Hazardous Material (including any losses,
       liabilities, damages, injuries, costs, expenses or claims asserted or
       arising under any Environmental Law), regardless of whether caused by,
       or within the control of, the Company or such Subsidiary;

              (vii)  any misrepresentation, inaccuracy or any breach in or of
       Section 8.19 or Section 9.12; or

              (viii) any investigation, litigation or proceeding related to any
       Investment by the Company, any of its Subsidiaries or Producers Energy
       in any Person, whether or not any Agent or any U.S. Lender is party
       thereto;





                                       56
<PAGE>   63
(the foregoing collectively the "Indemnified Liabilities"), except to the
extent that a final order of a court of competent jurisdiction finds that such
Indemnified Liability arises solely from such Indemnified Person's gross
negligence or wilful misconduct.  If and to the extent that the foregoing
undertaking may be unenforceable for any reason, the Company hereby agrees to
make the maximum contribution to the payment and satisfaction of each of the
Indemnified Liabilities which is permissible under applicable law.  The
obligations of the Company under this Section 14.7 shall survive the
termination of this Agreement or any non-assumption of this Agreement in a
bankruptcy or similar proceeding.  The Company shall be obligated to indemnify
the Indemnified Persons for all Claims regardless of whether the Company had
knowledge of the facts and circumstances giving rise to such Claims.

       14.8.  Numbers of Documents.  All statements, notices, closing
documents, and requests hereunder shall be furnished to the Global
Administrative Agent with sufficient counterparts so that the Global
Administrative Agent may furnish one to each of the U.S. Lenders and each of
the Agents.

       14.9.  Severability of Provisions.  Any provision in any U.S. Loan
Document that is held to be inoperative, unenforceable, or invalid in any
jurisdiction shall, as to that jurisdiction, be inoperative, unenforceable, or
invalid without affecting the remaining provisions in that jurisdiction or the
operation, enforceability, or validity of that provision in any other
jurisdiction, and to this end the provisions of all U.S. Loan Documents are
declared to be severable.

       14.10. Nonliability of U.S. Lenders.  The relationship between the
Company on the one hand and the U.S. Lenders and the Agents on the other hand
shall be solely that of borrower and lender.  None of the Agents nor any U.S.
Lender shall have any fiduciary responsibilities to the Company or any of its
Subsidiaries or Affiliates.  None of the Agents nor any U.S. Lender undertakes
any responsibility to the Company or any of its Subsidiaries or Affiliates to
review or inform the Company of any matter in connection with any phase of the
Company's or such Subsidiary's or Affiliate's business or operations.

       14.11. CHOICE OF LAW.  THE U.S. LOAN DOCUMENTS (OTHER THAN THOSE
CONTAINING A CONTRARY EXPRESS CHOICE OF LAW PROVISION) SHALL BE CONSTRUED IN
ACCORDANCE WITH THE INTERNAL LAWS (AND NOT THE LAW OF CONFLICTS) OF THE STATE
OF ILLINOIS, BUT GIVING EFFECT TO FEDERAL LAWS APPLICABLE TO NATIONAL BANKS.

       14.12. CONSENT TO JURISDICTION.  ANY LITIGATION BASED HEREON, OR ARISING
OUT OF, UNDER, OR IN CONNECTION WITH, THIS AGREEMENT OR ANY OTHER U.S. LOAN
DOCUMENT, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, STATEMENTS (WHETHER
VERBAL OR WRITTEN) OR ACTIONS OF ANY AGENT, THE U.S. LENDERS OR THE COMPANY
SHALL BE BROUGHT AND MAINTAINED EXCLUSIVELY IN THE COURTS OF THE STATE OF
ILLINOIS OR IN THE UNITED STATES DISTRICT COURT FOR THE NORTHERN DISTRICT OF
ILLINOIS; PROVIDED, HOWEVER, THAT ANY SUIT SEEKING ENFORCEMENT AGAINST ANY
COLLATERAL OR OTHER PROPERTY MAY BE BROUGHT, AT ANY AGENT'S OPTION, IN THE
COURTS OF ANY JURISDICTION WHERE SUCH COLLATERAL OR OTHER PROPERTY MAY BE
FOUND.  THE COMPANY HEREBY EXPRESSLY AND IRREVOCABLY SUBMITS TO THE
JURISDICTION OF THE COURTS OF THE STATE OF ILLINOIS AND THE UNITED STATES
DISTRICT COURT FOR THE NORTHERN DISTRICT OF ILLINOIS FOR THE PURPOSE OF ANY
SUCH LITIGATION AS SET FORTH ABOVE AND IRREVOCABLY AGREES TO BE BOUND BY ANY
JUDGMENT RENDERED THEREBY IN CONNECTION WITH SUCH LITIGATION.  THE COMPANY
FURTHER IRREVOCABLY CONSENTS TO THE SERVICE OF PROCESS BY REGISTERED MAIL,
POSTAGE PREPAID, OR BY PERSONAL SERVICE WITHIN OR WITHOUT THE STATE OF
ILLINOIS.  THE COMPANY HEREBY EXPRESSLY AND IRREVOCABLY WAIVES, TO THE FULLEST
EXTENT PERMITTED BY LAW, ANY OBJECTION WHICH IT MAY HAVE OR HEREAFTER MAY HAVE
TO THE LAYING OF VENUE OF ANY SUCH LITIGATION BROUGHT IN ANY SUCH COURT
REFERRED TO ABOVE AND ANY CLAIM THAT ANY SUCH LITIGATION HAS BEEN BROUGHT IN AN
INCONVENIENT FORUM.  TO THE EXTENT THAT THE COMPANY HAS OR HEREAFTER MAY
ACQUIRE ANY IMMUNITY FROM JURISDICTION OF ANY COURT OF FROM ANY LEGAL PROCESS
(WHETHER THROUGH SERVICE OR NOTICE, ATTACHMENT PRIOR TO JUDGMENT, ATTACHMENT IN
AID OF EXECUTION OR OTHERWISE) WITH RESPECT TO ITSELF OR ITS PROPERTY,





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<PAGE>   64
THE COMPANY HEREBY IRREVOCABLY WAIVES SUCH IMMUNITY IN RESPECT OF ITS
OBLIGATIONS UNDER THIS AGREEMENT AND THE OTHER U.S. LOAN DOCUMENTS.

       14.13. Confidentiality.  Each U.S. Lender and each Agent agrees to hold
any confidential information which it may receive from the Company pursuant to
this Agreement in confidence in accordance with the provisions set forth in
Exhibit J hereto.  In addition to the disclosures permitted in such provisions,
the U.S. Lenders and the Agents each shall be permitted to make disclosures of
such information in accordance with Section 17.4.


                                   ARTICLE XV

              THE AGENTS, THE ARRANGERS AND THE ENGINEERING BANKS

       15.1.  Appointment of Agents.  First Chicago is hereby appointed Global
Administrative Agent hereunder and under each other U.S. Loan Document, Chase
is hereby appointed Co-Agent hereunder and under each other U.S. Loan Document,
First Chicago Capital Markets, Inc. is hereby appointed as an Arranger
hereunder and under each other U.S. Loan Document, Chase Securities Inc. is
hereby appointed as an Arranger hereunder and under each other U.S. Loan
Document, and each of First Chicago and Chase is appointed as an Engineering
Bank hereunder and each of the U.S. Lenders irrevocably authorizes each such
Agent to act in such capacities.  Each Agent agrees to act as such upon the
express conditions contained in this Article XV.  No Agent shall have a
fiduciary relationship in respect of any U.S. Lender by reason of this
Agreement or any of the other U.S. Loan Documents.

       15.2.  Powers.  Each Agent shall have and may exercise such powers under
this Agreement and the other U.S. Loan Documents as are specifically delegated
to it by the terms of each thereof, together with such powers as are reasonably
incidental thereto.  None of the Agents shall have implied duties to the U.S.
Lenders, or any obligation to the U.S. Lenders to take any action thereunder
except any action by an Agent specifically provided by the U.S. Loan Documents
to be taken by such Agent.

       15.3.  General Immunity.  No Agent nor any of its respective directors,
officers, agents or employees shall be liable to any U.S. Lender or any of the
other Agents for any action taken or omitted to be taken by it or them
hereunder or under any other U.S. Loan Document or in connection herewith or
therewith except for its or their own gross negligence or wilful misconduct as
established by final order of a court of competent jurisdiction.

       15.4.  No Responsibility for Loans, Recitals, etc.  No Agent nor any of
its respective directors, officers, agents or employees shall be responsible
for or have any duty to ascertain, inquire into, or verify (i) any statement,
warranty or representation made in connection with any U.S. Loan Document or
any borrowing hereunder; (ii) the performance or observance of any of the
covenants or agreements of any obligor under any U.S. Loan Document; (iii) the
satisfaction of any condition specified in Article VII, except receipt by an
Agent of items required to be delivered to such Agent unless such condition
shall have been waived in accordance with Section 13.2; or (iv) the validity,
effectiveness or genuineness of any U.S. Loan Document or any other agreement,
instrument or writing furnished in connection therewith.

       15.5.  Action on Instructions of U.S. Lenders.  Each Agent shall in all
cases be fully protected in acting, or in refraining from acting, hereunder and
under any other U.S. Loan Document in accordance with written instructions
signed by the Required Lenders, and such instructions and any action taken or
failure to act pursuant thereto shall be binding on all of the U.S. Lenders,
the other Agents and all holders of Notes.

       15.6.  Employment of Agents and Counsel.  Each Agent may execute any of
its duties as Agent hereunder and under any other U.S. Loan Document by or
through employees, agents, and attorneys-in-fact and shall not be answerable to
the U.S. Lenders, except as to money or securities received by it or its
authorized agents, for the default or misconduct of any such agents or
attorneys-in-fact selected by it with reasonable care.  Each Agent shall be
entitled





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<PAGE>   65
to advice of counsel concerning all matters pertaining to the agency hereby
created and its respective duties hereunder and under any other U.S. Loan
Document.

       15.7.  Reliance on Documents; Counsel.  Each Agent shall be entitled to
rely upon any Note, notice, consent, certificate, affidavit, letter, telegram,
statement, paper or document believed by it to be genuine and correct and to
have been signed or sent by the proper person or persons, and, in, respect to
legal matters, upon the opinion of counsel selected by such Agent, which
counsel may be employees of the Agents or any of them.

       15.8.  Reimbursement and Indemnification.  Each U.S. Lender agrees to
reimburse and indemnify each of the Global Administrative Agent, each Arranger
and each Engineering Bank ratably in proportion to such U.S. Lender's Aggregate
Commitments, (i) for any amounts (other than principal or interest) not
reimbursed by the Company or any Guarantor for which such Agent is entitled to
reimbursement by the Company under the U.S. Loan Documents, and (ii) for any
liabilities, obligations, losses, damages, penalties, actions, judgments,
suits, costs, expenses or disbursements of any kind and nature whatsoever which
may be imposed on, incurred by or asserted against such Agent in any way
relating to or arising out of the U.S. Loan Documents or any other document
delivered in connection therewith or the transactions contemplated thereby, or
the enforcement of any of the terms thereof or of any such other documents,
provided that no U.S. Lender shall be so liable to the extent any of the
foregoing is found by a final order of a court of competent jurisdiction to
have arisen solely from such Agent's gross negligence or willful misconduct.

       15.9.  Rights as a U.S. Lender.  With respect to its Commitments, Loans
made by it and the Notes issued to it, each Agent shall have the same rights
and powers hereunder and under each other U.S. Loan Document as any U.S. Lender
and may exercise the same as though it did not hold such role, and the term
"U.S. Lender" or "U.S. Lenders" shall, unless the context otherwise indicates,
include each of them in its individual capacity.  In addition to, and not by
way of limitation of the rights set forth in Section 15.2 and this Section
15.9, each Agent may accept deposits from, lend money to, and generally engage
in any kind of banking or trust business with the Company or any Subsidiary or
any other Affiliate of the Company as if it did not hold such role.

       15.10. U.S. Lender Credit Decision.  Each U.S. Lender acknowledges that
it has, independently and without reliance upon any Agent or any other U.S.
Lender and based on the financial statements prepared by the Company and such
other documents and information as it has deemed appropriate, made its own
credit analysis and decision to enter into this Agreement and the other U.S.
Loan Documents.  Each U.S. Lender also acknowledges that it will, independently
and without reliance upon any Agent or any other U.S. Lender 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 this
Agreement and the other U.S. Loan Documents.

       15.11. Certain Successor Agents.  Any Agent may resign at any time by
giving thirty (30) days' prior written notice thereof to the U.S. Lenders and
the Company.  Upon any such resignation, the Company shall, if no Default or
Unmatured Default has occurred and is continuing, have the right (subject to
the consent of the Required Lenders) to appoint, on behalf of the Company and
the U.S. Lenders, a U.S. Lender as a successor Agent.  If no successor Agent
shall have been so appointed by the Company and shall have accepted such
appointment within thirty (30) days' after the retiring Agent's giving notice
of resignation or if a Default or Unmatured Default has occurred and is
continuing, then the retiring Agent may appoint, on behalf of the Company and
the U.S. Lenders, a U.S. Lender as a successor Agent; provided, however, that
the Company may, within the one year period following the appointment of a
successor Agent, and upon thirty (30) days written notice to the U.S. Lenders,
remove the successor Agent and appoint a successor Agent acceptable to the
Company (subject to the consent of the Required Lenders).  Upon the acceptance
of any appointment as Agent hereunder by a successor Agent, such successor
Agent shall thereupon succeed to and become vested with all the rights, powers,
privileges and duties of the retiring Agent, and the retiring Agent shall be
discharged from its duties and Obligations (but not any liability arising from
its gross negligence or wilful misconduct as established by a final order of a
court of competent jurisdiction) hereunder and under the other U.S. Loan
Documents.  After any retiring Agent's resignation hereunder as Agent, the
provisions of this Article XV shall continue in effect for its benefit in
respect of any actions taken or omitted to be taken by it while it was acting
as an Agent hereunder and under the other U.S. Loan Documents.





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<PAGE>   66

                                  ARTICLE XVI

                            SETOFF; RATABLE PAYMENTS

       16.1.  Setoff.  In addition to, and without limitation of, any rights of
the U.S. Lenders under applicable law, if the Company becomes insolvent,
however evidenced, or any Default or Unmatured Default occurs, any indebtedness
from any U.S. Lender to the Company (including all account balances, whether
provisional or final and whether or not collected or available) may be offset
and applied toward the payment of the Obligations owing to such U.S. Lender,
whether or not the Obligations, or any part hereof, shall then be due and
payable.

       16.2.  Ratable Payments.  If any U.S. Lender, whether by setoff or
otherwise, has payment made to it upon its Loans in a greater proportion than
it would have received pursuant to an allocation using the method set forth in
Section 4.2 or 4.3 (except for payments made with respect to 1995 Loans which
are outstanding on the Global Effective Date pursuant to Section 7.1(d)), such
U.S. Lender agrees, promptly upon demand, to purchase a portion of the Loans
held by the other U.S. Lenders so that after such purchase each U.S. Lender
will hold its ratable proportion of such type of Loans.  If any U.S. Lender,
whether in connection with setoff or amounts which might be subject to setoff
or otherwise, receives collateral or other protection for its Obligations or
such amounts which may be subject to set off, such U.S. Lender agrees, promptly
upon demand, to take such action necessary such that all U.S. Lenders share in
the benefits of such collateral ratably in proportion to the Obligations owing
to each of them.  In case any such payment is disturbed by legal process, or
otherwise, appropriate further adjustments shall be made.


                                  ARTICLE XVII

               BENEFIT OF AGREEMENT; ASSIGNMENTS; PARTICIPATIONS

       17.1.  Successors and Assigns.  The terms and provisions of the U.S.
Loan Documents shall be binding upon and inure to the benefit of the Company,
the Agents and the U.S. Lenders and their respective successors and assigns,
except that the Company shall not have the right to assign its rights or
obligations under the U.S. Loan Documents and any assignment by any U.S. Lender
must be made in compliance with Section 17.3.  The Global Administrative Agent
may treat the payee of any Note as the owner thereof for all purposes hereof
unless and until such payee complies with Section 17.3 in the case of an
assignment thereof or, in the case of any other transfer, a written notice of
the transfer is filed with such Agent.  Any assignee or transferee of a Note
agrees by acceptance thereof to be bound by all the terms and provisions of the
U.S. Loan Documents.  Any request, authority or consent of any Person, who at
the time of making such request or giving such authority or consent is the
holder of any Note, shall be conclusive and binding on any subsequent holder,
transferee or assignee of such Note or of any Note or Notes issued in exchange
therefor.

       17.2.  Participations.

       (a)    Any U.S. Lender, in the ordinary course of its business and in
accordance with applicable law, at any time may sell to one or more banks or
other entities ("Participants") participating interests in any Loan owing to
such U.S. Lender, any Note held by such U.S. Lender, any Commitment of such
U.S. Lender or any other interest of such U.S. Lender under the U.S. Loan
Documents.  In the event of any such sale by a U.S. Lender of participating
interests to a Participant, such U.S. Lender's Obligations under the U.S. Loan
Documents shall remain unchanged, such U.S. Lender shall remain solely
responsible to the other parties hereto for the performance of such
obligations, such U.S. Lender shall remain the holder of any such Note or
Obligation for all purposes under the U.S. Loan Documents, and the Company and
the Agents shall continue to deal solely and directly with such U.S. Lender in
connection with such U.S. Lender's rights and obligations under the U.S. Loan
Documents.

       (b)    Each U.S. Lender shall retain the sole right to approve, without
the consent of any Participant, any amendment, modification or waiver of any
provision of the U.S. Loan Documents other than any amendment,





                                       60
<PAGE>   67
modification or waiver with respect to any Loan or Commitment in which such
Participant has an interest which forgives principal, interest or fees or
reduces the interest rate or fees payable with respect to any such Loan or
Commitment, postpones any date fixed for any regularly-scheduled payment of
principal of, or interest or fees on, or reimbursement obligation with respect
to, any such Loan or Commitment, releases any guarantor of any such Obligation.

       (c)    The Company agrees that each Participant shall be deemed to have
the right of setoff provided in Section 16.1 in respect of its participating
interest in amounts owing under the U.S. Loan Documents to the same extent as
if the amount of its participating interest were owing directly to it as a U.S.
Lender under the U.S. Loan Documents, provided that each U.S. Lender shall
retain the right of setoff provided in Section 16.1 with respect to the amount
of participating interests sold to each Participant.  The U.S. Lenders agree to
share with each Participant, and each Participant, by exercising the right of
setoff provided in Section 16.1, agrees to share with each U.S. Lender, any
amount received pursuant to the exercise of its right of setoff, such amounts
to be shared in accordance with Section 16.2 as if each Participant were a U.S.
Lender.  The Company also agrees that each Participant shall be entitled to the
benefits of Sections 6.1 and 6.3 with respect to its participation in the
Commitments or the Loans outstanding from time to time; provided, that no
Participant shall be entitled to receive any greater amount pursuant to such
Sections than the transferor U.S. Lender would have been entitled to receive in
respect of the amount of the participation transferred by such transferor U.S.
Lender to such Participant had no such transfer occurred.

       17.3.  Assignments.

       (a)    Any U.S. Lender may, in the ordinary course of its business and
in accordance with applicable law, at any time assign to one or more banks or
other entities ("Purchasers") all or any part of its rights and obligations
under the U.S. Loan Documents subject to a minimum of $15,000,000 or such
lesser amount as may be agreed to by the Company; provided that with respect to
any Purchaser which is not an Affiliate of such assigning U.S. Lender, such
assignment shall require the consent of the Company, which consent of the
Company shall not be unreasonably withheld or delayed.  Such assignment shall
be substantially in the form of Exhibit D hereto.  The consent of the Global
Administrative Agent shall also be required prior to an assignment becoming
effective with respect to a Purchaser which is not a U.S. Lender.  All such
consents shall be substantially in the form attached as Exhibits "D-II" or "D-
III" to Exhibit D hereto and shall not be unreasonably withheld.

       (b)    Upon (i) delivery to the Global Administrative Agent of a notice
of assignment, substantially in the form attached as Exhibit "D-I" to Exhibit D
hereto (a "Notice of Assignment"), together with any consents required by
Section 17.3.(a), and (ii) payment of a $3,000 fee to the Global Administrative
Agent for processing such assignment, such assignment shall become effective on
the effective date specified in such Notice of Assignment; provided, however,
that any amounts paid by the Company to, or for the benefit of, the assigning
U.S. Lender, on or before the execution date of the assignment, if such date is
later than the effective date of the assignment, shall be deemed paid to and
for the benefit of the Purchaser for all purposes.  On and after the effective
date of such assignment, such Purchaser shall for all purposes be a U.S.
Lender, party to this Agreement and any other U.S. Loan Document, including,
without limitation, the Intercreditor Agreement, executed by the U.S. Lenders,
and shall have all the rights and obligations of a U.S. Lender under the U.S.
Loan Documents, including, without limitation, the Intercreditor Agreement, to
the same extent as if it were an original party hereto shall be deemed a U.S.
Lender for all purposes of the U.S. Loan Documents, including, without
limitation, the Intercreditor Agreement, and no further consent or action by
the Company, the U.S. Lenders or any Agent shall be required to release the
transferor U.S. Lender, with respect to the percentages of the Commitment, and
the Loans assigned to such Purchaser and the transferor U.S. Lender shall
henceforth be so released, and each reference herein and in the other U.S. Loan
Documents, including, without limitation, the Intercreditor Agreement, to the
transferor U.S. Lender shall thereafter be deemed a reference to the Purchaser
for all purposes.  Upon the consummation of any assignment to a Purchaser
pursuant to this Section 17.3(b), the Company shall issue replacement Notes to
such transferor U.S. Lender and shall issue new Notes or, as appropriate,
replacement Notes, to such Purchaser, in each case in principal amounts
reflecting their respective Commitments, as adjusted pursuant to such
assignment.





                                       61
<PAGE>   68
       (c)    The provisions of the foregoing clauses (a) and (b) shall not
apply to or restrict, or require the consent of or notice to any Person to
effectuate, the pledge or assignment by any Agent or U.S. Lender of its rights
or obligations under any U.S. Loan Documents to any Federal Reserve Bank.

       17.4.  Dissemination of Information.  The Company authorizes each Agent
and each U.S. Lender to disclose to any Participant or Purchaser or any other
Person acquiring an interest in the U.S. Loan Documents by operation of law
(each a "Transferee") and any prospective Transferee any and all information in
such U.S. Lender's possession concerning the creditworthiness of the Company
and the Subsidiaries, provided that such Transferee and prospective Transferee
agrees in writing to be bound by Section 14.13 of this Agreement.

       17.5.  Tax Treatment.  If any interest in any U.S. Loan Document is
transferred to any Transferee which is organized under the laws of any
jurisdiction other than the United States or any State thereof, the transferor
U.S. Lender shall cause such Transferee, concurrently with the effectiveness of
such transfer, to comply with the provisions of Section 6.8.


                                 ARTICLE XVIII

                                    NOTICES

       18.1.  Giving Notice.  Except as otherwise permitted by Section 4.5 with
respect to borrowing notices, all notices and other communications provided to
any party hereto under this Agreement or any other U.S. Loan Document shall be
in writing or by telex or by facsimile and addressed or delivered to such party
at its address set forth below its signature hereto or at such other address as
may be designated by such party in a notice to the other parties.  Any notice,
if mailed and properly addressed with postage prepaid, shall be deemed given
when received; any notice, if transmitted by telex or facsimile, shall be
deemed given when transmitted (answerback confirmed in the case of telexes).

       18.2.  Change of Address.  The Company, each Agent, and each U.S. Lender
may change the address for service of notice upon it by a notice in writing to
the other parties hereto.


                                  ARTICLE XIX

                                  COUNTERPARTS

       This Agreement may be executed in any number of counterparts, all of
which taken together shall constitute one agreement, and any of the parties
hereto may execute this Agreement by signing any such counterpart.  This
Agreement shall be effective when it has been executed by the Company, the
Agents and the U.S. Lenders and each party has notified the Global
Administrative Agent, by telex, facsimile or telephone, that it has taken such
action.


                                   ARTICLE XX

                               NO ORAL AGREEMENTS

       THIS WRITTEN AGREEMENT, THE NOTES, AND THE OTHER U.S. LOAN DOCUMENTS
REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED
BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE
PARTIES.  THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG THE PARTIES.

                      [SIGNATURES BEGIN ON FOLLOWING PAGE]





                                       62
<PAGE>   69
       IN WITNESS WHEREOF, the Company, the U.S. Lenders and the Agents have
executed this Agreement as of the date first above written.



                                     APACHE CORPORATION

                                     By: /s/ APACHE CORPORATION
                                        ----------------------------------------
                                     Name:   Matthew W. Dundrea
                                     Title:  Treasurer

                                     Address:   2000 Post Oak Boulevard
                                                Suite 100
                                                Houston, Texas  77056-4400

                                     Attention: Matthew W. Dundrea, Treasurer

                                     Telephone: (713) 296-6640
                                     Facsimile: (713) 296-6458


                                     with a copy to:

                                     Zurab S. Kobiashvili
                                     Vice President and General Counsel
                                     2000 Post Oak Boulevard, Suite 100
                                     Houston, Texas  77056-4400

                                     Telephone: (713) 296-6204
                                     Facsimile: (713) 296-6458





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                                     S - 1
<PAGE>   70

                                     FIRST CHICAGO CAPITAL MARKETS, INC.,
                                       as Arranger


                                     By: /s/ FIRST CHICAGO CAPITAL MARKETS, INC.
                                          --------------------------------------
                                     Name:
                                     Title:

                                     Address:   One First National Plaza
                                                Chicago, Illinois  60670

                                     Attention: Mr. Thomas E. Both

                                     Telephone: (312) 732-7268
                                     Facsimile: (312) 732-2038





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<PAGE>   71

                                     CHASE SECURITIES INC., as Arranger


                                     By:  /s/ CHASE SECURITIES INC.
                                          --------------------------------------
                                     Name:   Tod Benton
                                     Title:  Managing Director

                                     Address:   707 Travis
                                                5th Floor North
                                                Houston, Texas 77002

                                     Attention: Lori Vetters

                                     Telephone: (713) 216-4332
                                     Facsimile: (713) 216-4117





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                                     S - 3
<PAGE>   72

Commitments                          THE FIRST NATIONAL BANK OF CHICAGO,
- -----------                           Individually and as Global Administrative
                                      Agent and Engineering Bank
$60,000,000                           

                                     By: /s/ THE FIRST NATIONAL BANK OF CHICAGO
                                          --------------------------------------
                                     Name:   W. Walter Green
                                     Title:  Attorney-in-fact for The First
                                             National Bank of Chicago

                                     Address:   One First National Plaza
                                                Chicago, Illinois  60670

                                     Attention: W. Walter Green, III,
                                                Petroleum and Mining Division
                                                Suite 0363

                                     Telephone: (312) 732-7235
                                     Facsimile: (312) 732-3055


                                     with a copy to:

                                                Syndications and
                                                Placements/Agency
                                                Suite 0353, 15th Floor
                                                One First National Plaza
                                                Chicago, IL  60670

                                     Attention: Mr. Thomas E. Both

                                     Telephone: (312) 732-7268
                                     Facsimile: (312) 732-2038





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                                     S - 4
<PAGE>   73

$50,000,000                          THE CHASE MANHATTAN BANK, Individually and
                                     as Co-Agent and Engineering Bank


                                     By: /s/  THE CHASE MANHATTAN BANK
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   270 Park Avenue
                                                Energy Portfolio, 10th Floor
                                                New York, New York 10017-2070

                                     Attention: Ronald Potter

                                     Telephone: (212) 270-2057
                                     Facsimile: (212) 270-3860


                                     with a copy to:

                                     Lori Vetters
                                     The Chase Manhattan Bank
                                     707 Travis
                                     5th Floor North
                                     Houston, Texas 77002

                                     Telephone: (713) 216-4332
                                     Facsimile: (713) 216-4117





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<PAGE>   74

$40,000,000                          BANK OF MONTREAL, as a U.S. Lender and as
                                     Lead Manager



                                     By: /s/ BANK OF MONTREAL
                                        ----------------------------------------
                                     Name:
                                     Title:


                                     Address:   700 Louisiana, Suite 4400
                                                Houston, TX  77002

                                     Attention: Robert L. Roberts

                                     Telephone: (713) 546-9754
                                     Facsimile: (713) 223-4007





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                                     S - 6
<PAGE>   75

$35,000,000                 MORGAN GUARANTY TRUST COMPANY OF NEW YORK,
                            as a U.S. Lender



                            By: /s/ MORGAN GUARANTY TRUST COMPANY OF NEW YORK
                               ----------------------------------------
                            Name:
                            Title:

                            Address:   60 Wall Street
                                       New York, NY  10260
                  
                            Attention: Mr. Philip W. McNeal
               
                            Telephone: (212) 648-7225
                           Facsimile: (212) 648-5014





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 7
<PAGE>   76

$60,000,000                          NATIONSBANK OF TEXAS, N.A., as a
                                     U.S. Lender and as Lead Manager



                                     By: /s/ NATIONSBANK OF TEXAS, N.A.
                                        ----------------------------------------
                                     Name:      Kristin B. Palmer
                                     Title:     Senior Vice President

                                     Address:   901 Main Street
                                                Dallas, TX  75202

                                     Attention: Karen Dumond

                                     Telephone: (214) 508-2513
                                     Facsimile: (214) 508-1215

                                     With a copy to:

                                     Melissa A. Bauman
                                     700 Louisiana Street, 8th Floor
                                     Houston, TX  77002

                                     Telephone: (713) 247-6830
                                     Facsimile: (713) 247-6568





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 8
<PAGE>   77

$35,000,000                          ROYAL BANK OF CANADA, as a U.S. Lender


                                     By: /s/ ROYAL BANK OF CANADA
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   600 Wilshire Blvd.
                                                Suite 800
                                                Los Angeles, CA  90017

                                     Attention: Linda Stephens

                                     Telephone: (213) 955-5347
                                     Facsimile: (213) 955-5350





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                                     S - 9
<PAGE>   78

$25,000,000                  BANK OF AMERICA NATIONAL TRUST AND SAVINGS
                             ASSOCIATION, as a U.S. Lender



                             By: /s/ BANK OF AMERICA NATIONAL TRUST AND SAVINGS
                                     ASSOCIATION
                                ----------------------------------------
                             Name:   J. Stephen Mernick
                             Title:  Senior Vice President

                             Address:   333 Clay Street, Suite 4550
                                        Houston, TX  77002

                             Attention: Ms. Paula Mitchell

                             Telephone: (713) 651-4877
                             Facsimile: (713) 651-4808





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 10
<PAGE>   79

$30,000,000                          CIBC INC., as a U.S. Lender and as Lead
                                     Manager



                                     By: /s/  CIBC INC.
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   Two Paces West
                                                2727 Paces Ferry Road
                                                Suite 1200
                                                Atlanta, GA  30339

                                     Attention: Credit Administration

                                     Telephone: (770) 319-4999
                                     Facsimile: (770) 319-4950

                                     With a copy to:

                                     909 Fannin, Suite 1200
                                     Houston, TX  77010

                                     Attention: Brian Swinford

                                     Telephone: (713) 658-8400
                                     Facsimile: (713) 658-9922





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                                     S - 11
<PAGE>   80

$45,000,000                          SOCIETE GENERALE, SOUTHWEST AGENCY, as a
                                     U.S. Lender



                                     By: /s/ SOCIETE GENERALE, SOUTHWEST AGENCY
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   1111 Bagby, Suite 2020
                                                Houston, TX  77002

                                     Attention: Richard A. Erbert

                                     Telephone: (713) 759-6318
                                     Facsimile: (713) 650-0824

                                     With a copy to:

                                     2001 Ross Avenue, Suite 4800
                                     Dallas, TX  75201

                                     Attention: Loan Operations

                                     Telephone: (214) 979-2792
                                     Facsimile: (214) 754-0171





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                                     S - 12
<PAGE>   81

$40,000,000                          ABN-AMRO BANK N.V. - HOUSTON AGENCY, as a
                                     U.S. Lender



                                     By: /s/ ABN-AMRO BANK N.V. - HOUSTON AGENCY
                                        ----------------------------------------
                                     Name:
                                     Title:


                                     By: /s/ ABN-AMRO BANK N.V. - HOUSTON AGENCY
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   Three Riverway
                                                Suite 1700
                                                Houston, TX  77056

                                     Attention: Michael N. Oakes

                                     Telephone: (713) 964-3356
                                     Facsimile: (713) 629-7533





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 13
<PAGE>   82

$20,000,000                  THE BANK OF NOVA SCOTIA, ATLANTA AGENCY, as
                             a U.S. Lender



                             By: /s/  THE BANK OF NOVA SCOTIA, ATLANTA AGENCY
                                ----------------------------------------
                             Name:
                             Title:

                             Address:   600 Peachtree Street N.E.
                                        Suite 2700
                                        Atlanta, GA 30308

                             Attention: F.C.H. Ashby

                             Telephone: (404) 877-1500
                             Facsimile: (404) 888-8998
                  
                             With a copy to:
                      
                             The Bank of Nova Scotia
                             Houston Representative Office
                             1100 Louisiana, Suite 3000
                             Houston, TX  77002

                             Attention: Mark A. Ammerman
                       
                             Telephone: (713) 752-0900
                             Facsimile: (713) 752-2425





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 14
<PAGE>   83

$40,000,000                          CHRISTIANIA BANK OG KREDITKASSE, as a
                                     U.S. Lender



                                     By: /s/ CHRISTIANIA BANK OG KREDITKASSE
                                        ----------------------------------------
                                     Name:
                                     Title:



                                     By: /s/ CHRISTIANIA BANK OG KREDITKASSE
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   11 West 42nd Street
                                                New York, NY  10036

                                     Attention: Deborah Dickehuth

                                     Telephone: (212) 827-4836
                                     Facsimile: (212) 827-4888





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 15
<PAGE>   84

$15,000,000                          CITIBANK, N.A., as a U.S. Lender



                                     By: /s/ CITIBANK, N.A.
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   One Court Square
                                                7th Floor
                                                Long Island City, NY  11120

                                     Attention: Leena Caligiure

                                     Telephone: (718) 248-5762
                                     Facsimile: (718) 248-4844

                                     with a copy to:

                                     Mr. L. Don Miller
                                     1200 Smith Street, Suite 2000
                                     Houston, Texas 77002
                                     Telephone: (713) 654-2962
                                     Facsimile: (713) 654-2849





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 16
<PAGE>   85

$40,000,000                   THE LONG-TERM CREDIT BANK OF JAPAN, LTD.,
                              as a U.S. Lender



                              By: /s/  THE LONG-TERM CREDIT BANK OF JAPAN, LTD.
                                 ----------------------------------------
                              Name:
                              Title:

                              Address:   165 Broadway
                                         New York, NY  10006

                              Attention: Maria Araujo
                           
                              Telephone: (212) 335-4553
                              Facsimile: (212) 608-2371

                              With a copy to:

                              2200 Ross Avenue, Suite 4700 West
                              Dallas, TX  75201

                              Attention: John Clark

                              Telephone: (214) 969-5352
                              Facsimile: (214) 969-5357





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 17
<PAGE>   86

$40,000,000                  UNION BANK OF SWITZERLAND, HOUSTON AGENCY,
                             as a U.S. Lender



                             By: /s/ UNION BANK OF SWITZERLAND, HOUSTON AGENCY
                                ----------------------------------------
                             Name:
                             Title:


                             By: /s/ UNION BANK OF SWITZERLAND, HOUSTON AGENCY
                                ----------------------------------------
                             Name:
                             Title:


                             Address:   1100 Louisiana, Suite 4500
                                        Houston, TX  77002

                             Attention: Evans Swann
                      
                             Telephone: (713) 655-6500
                             Facsimile: (713) 655-6555





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 18
<PAGE>   87

$35,000,000                          THE FIRST NATIONAL BANK OF BOSTON, as a
                                     U.S. Lender



                                     By: /s/  THE FIRST NATIONAL BANK OF BOSTON
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   100 Federal Street
                                                Boston, MA  02110

                                     Attention: Ms. Virginia Ryan

                                     Telephone: (617) 434-3606
                                     Facsimile: (617) 434-3652





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 19
<PAGE>   88

$35,000,000                          BANQUE PARIBAS, as a U.S. Lender



                                     By: /s/  BANQUE PARIBAS
                                        ----------------------------------------
                                     Name:
                                     Title:


                                     By: /s/  BANQUE PARIBAS
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   787 7th Avenue
                                                New York, NY  10019

                                     Attention: Charles K. Thompson

                                     Telephone: (212) 841-2133
                                     Facsimile: (212) 841-2555





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 20
<PAGE>   89

$35,000,000                          COLORADO NATIONAL BANK, as a U.S. Lender



                                     By: /s/  COLORADO NATIONAL BANK
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   950 Seventeenth Street
                                                Denver, CO  80202

                                     Attention: Mr. Paul Jelaco

                                     Telephone: (303) 585-4983
                                     Facsimile: (303) 585-4362





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 21
<PAGE>   90

$35,000,000                   THE FUJI BANK, LIMITED - HOUSTON AGENCY, as
                              a U.S. Lender
                          


                              By: /s/  THE FUJI BANK, LIMITED - HOUSTON AGENCY
                                 ----------------------------------------
                              Name:
                              Title:
                         
                              Address:   One Houston Center
                                         1221 McKinney, Suite 4100
                                         Houston, TX  77010

                              Attention: Roger K. Frey

                              Telephone: (713) 650-7868
                              Facsimile: (713) 759-0048





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 22
<PAGE>   91

$35,000,000                          UNION BANK OF CALIFORNIA, N.A., as a
                                     U.S. Lender



                                     By: /s/ UNION BANK OF CALIFORNIA, N.A.
                                        ----------------------------------------
                                     Name:
                                     Title:


                                     By: /s/ UNION BANK OF CALIFORNIA, N.A.
                                        ----------------------------------------
                                     Name:
                                     Title:


                                     Address:   445 South Figueroa Street
                                                15th Floor
                                                Los Angeles, CA  90071

                                     Attention: Richard P. DeGrey, Jr.

                                     Telephone: (213) 236-5731
                                     Facsimile: (213) 236-4096


               
- ---------------
$750,000,000

AGGREGATE
COMMITMENT





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 23

<PAGE>   1
                                                                    EXHIBIT 10.2


                          [CANADIAN CREDIT AGREEMENT]

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



                                CREDIT AGREEMENT

                          dated as of October 31, 1996

                                     among

                              APACHE CANADA LTD.,

                                      and

                       THE CANADIAN LENDERS NAMED HEREIN,

                                      and

                      THE FIRST NATIONAL BANK OF CHICAGO,
                        as Global Administrative Agent,

                                      and

                               BANK OF MONTREAL,
                       as Canadian Administrative Agent,

                                      and

                      FIRST CHICAGO CAPITAL MARKETS, INC.,
                                  as Arranger,

                                      and

                             CHASE SECURITIES INC.,
                                  as Arranger


================================================================================
<PAGE>   2
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                            Page
<S>           <C>                                                         <C> <C>
RECITALS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1

ARTICLE I     DEFINITIONS AND TERMS OF CONSTRUCTION   . . . . . . . . . . .    1
     1.1.     Definitions   . . . . . . . . . . . . . . . . . . . . . . . .    1
     1.2.     Use of Defined Terms  . . . . . . . . . . . . . . . . . . . .   14
     1.3.     Cross References  . . . . . . . . . . . . . . . . . . . . . .   14
     1.4.     Accounting and Financial Determination  . . . . . . . . . . .   14
     1.5.     Currency References   . . . . . . . . . . . . . . . . . . . .   14

ARTICLE II    THE FACILITY  . . . . . . . . . . . . . . . . . . . . . . . .   14
     2.1.     The Facility  . . . . . . . . . . . . . . . . . . . . . . . .   14
              (a)    Description of Facility  . . . . . . . . . . . . . . .   14
              (b)    Facility Amount  . . . . . . . . . . . . . . . . . . .   15
              (c)    All Loans  . . . . . . . . . . . . . . . . . . . . . .   15
              (d)    Revolving Advances   . . . . . . . . . . . . . . . . .   15
     2.2.     Extension of Termination Date and of Aggregate Commitment   .   15
     2.3.     [Intentionally Omitted.]  . . . . . . . . . . . . . . . . . .   17
     2.4.     Facility Fee; Other Fees  . . . . . . . . . . . . . . . . . .   17
              (a)    Facility Fee   . . . . . . . . . . . . . . . . . . . .   17
              (b)    Agents' Fees   . . . . . . . . . . . . . . . . . . . .   17

ARTICLE III   BORROWING; SELECTING RATE OPTIONS; ETC.   . . . . . . . . . .   17
     3.1.     Method of Borrowing   . . . . . . . . . . . . . . . . . . . .   17
     3.2.     Maximum Interest  . . . . . . . . . . . . . . . . . . . . . .   17
     3.3.     Method of Selecting Rate Options and Interest Periods for
              Loans   . . . . . . . . . . . . . . . . . . . . . . . . . . .   18
     3.4.     [Intentionally Omitted]   . . . . . . . . . . . . . . . . . .   19
     3.5.     Minimum Amount of Each Advance  . . . . . . . . . . . . . . .   19
     3.6.     Continuation and Conversion Elections   . . . . . . . . . . .   19
     3.7.     Telephonic Notices  . . . . . . . . . . . . . . . . . . . . .   19
     3.8.     Rate after Maturity   . . . . . . . . . . . . . . . . . . . .   19
     3.9.     Interest Payment Dates; Determination of Interest and Fees  .   19
              (a)    Interest Payment Dates   . . . . . . . . . . . . . . .   19
              (b)    Determination of Interest and Fees   . . . . . . . . .   19
              (c)    Interest Act Waiver  . . . . . . . . . . . . . . . . .   20
              (d)    Nominal Rate   . . . . . . . . . . . . . . . . . . . .   20
              (e)    Interest Act   . . . . . . . . . . . . . . . . . . . .   20
     3.10.    Notification of Advances, Interest Rates, Prepayments and
              Commitment Reductions   . . . . . . . . . . . . . . . . . . .   20
     3.11.    Non-Receipt of Funds by the Canadian Administrative Agent   .   20

ARTICLE IV    MANDATORY PAYMENTS; REDUCTIONS OF COMMITMENTS; ETC.   . . . .   20
     4.1.     Mandatory Prepayments   . . . . . . . . . . . . . . . . . . .   20
              (a)    Mandatory Prepayments  . . . . . . . . . . . . . . . .   21
              (b)    Application of Mandatory Prepayments   . . . . . . . .   21
     4.2.     Voluntary Prepayments   . . . . . . . . . . . . . . . . . . .   21
     4.3.     Method of Payment   . . . . . . . . . . . . . . . . . . . . .   22
     4.4.     Notes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   22
</TABLE>





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                               TABLE OF CONTENTS
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<TABLE>
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<S>           <C>                                                             <C>
     4.5.     Voluntary Reductions of Commitments.    . . . . . . . . . . .   22
     4.6.     Voluntary and Mandatory Prepayments   . . . . . . . . . . . .   22

ARTICLE V     [Intentionally Omitted]   . . . . . . . . . . . . . . . . . .   22

ARTICLE VI    CHANGE IN CIRCUMSTANCES; TAXES  . . . . . . . . . . . . . . .   22
     6.1.     Yield Protection  . . . . . . . . . . . . . . . . . . . . . .   22
     6.2.     Availability of Rate Options  . . . . . . . . . . . . . . . .   23
     6.3.     Funding Indemnification   . . . . . . . . . . . . . . . . . .   23
     6.4.     Lending Installations   . . . . . . . . . . . . . . . . . . .   23
     6.5.     Increased Capital Costs   . . . . . . . . . . . . . . . . . .   24
     6.6.     Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   24
     6.7.     Canadian Lender Statements; Survival of Indemnity;
              Substitution of Canadian Lenders; Limitation on Claims by
              Canadian Lenders  . . . . . . . . . . . . . . . . . . . . . .   24
     6.8.     [Intentionally Omitted]   . . . . . . . . . . . . . . . . . .   25
     6.9.     Currency Conversion and Currency Indemnity  . . . . . . . . .   25
              (a)    Payments in Agreed Currency.   . . . . . . . . . . . .   25
              (b)    Conversion of Agreed Currency into Judgment Currency.    25
              (c)    Circumstances Giving Rise to Indemnity.  . . . . . . .   25
              (d)    Indemnity Separate Obligation.   . . . . . . . . . . .   26

ARTICLE VII   CONDITIONS PRECEDENT  . . . . . . . . . . . . . . . . . . . .   26
     7.1.     Conditions of Effectiveness   . . . . . . . . . . . . . . . .   26
     7.2.     Each Advance  . . . . . . . . . . . . . . . . . . . . . . . .   27

ARTICLE VIII  REPRESENTATIONS AND WARRANTIES  . . . . . . . . . . . . . . .   28
     8.1.     Corporate Existence and Standing  . . . . . . . . . . . . . .   28
     8.2.     Authorization and Validity  . . . . . . . . . . . . . . . . .   28
     8.3.     No Conflict; Government Consent   . . . . . . . . . . . . . .   28
     8.4.     Financial Statements  . . . . . . . . . . . . . . . . . . . .   28
     8.5.     Material Adverse Change   . . . . . . . . . . . . . . . . . .   28
     8.6.     Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   28
     8.7.     Litigation and Guaranteed Obligations   . . . . . . . . . . .   29
     8.8.     Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . .   29
     8.9.     Unfunded Pension Liabilities  . . . . . . . . . . . . . . . .   29
     8.10.    Accuracy of Information   . . . . . . . . . . . . . . . . . .   29
     8.11.    [Intentionally Omitted]   . . . . . . . . . . . . . . . . . .   29
     8.12.    Material Agreements   . . . . . . . . . . . . . . . . . . . .   29
     8.13.    Compliance With Laws  . . . . . . . . . . . . . . . . . . . .   29
     8.14.    Title to Properties   . . . . . . . . . . . . . . . . . . . .   29
     8.15.    Investment Company Act  . . . . . . . . . . . . . . . . . . .   29
     8.16.    Public Utility Holding Company Act  . . . . . . . . . . . . .   30
     8.17.    Post-Retirement Benefits  . . . . . . . . . . . . . . . . . .   30
     8.18.    Solvency  . . . . . . . . . . . . . . . . . . . . . . . . . .   30
     8.19.    Environmental Warranties  . . . . . . . . . . . . . . . . . .   30
</TABLE>





                                       ii
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                               TABLE OF CONTENTS
                                  (CONTINUED)
<TABLE>
<CAPTION>
                                                                            PAGE
<S>           <C>                                                             <C>
ARTICLE IX    AFFIRMATIVE COVENANTS   . . . . . . . . . . . . . . . . . . .   31
     9.1.     Financial Reporting   . . . . . . . . . . . . . . . . . . . .   31
     9.2.     Use of Proceeds   . . . . . . . . . . . . . . . . . . . . . .   33
     9.3.     Notice of Default, Unmatured Default, Litigation and
              Material Adverse Effect   . . . . . . . . . . . . . . . . . .   33
     9.4.     Conduct of Business   . . . . . . . . . . . . . . . . . . . .   33
     9.5.     Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   33
     9.6.     Insurance   . . . . . . . . . . . . . . . . . . . . . . . . .   33
     9.7.     Compliance with Laws  . . . . . . . . . . . . . . . . . . . .   33
     9.8.     Maintenance of Properties   . . . . . . . . . . . . . . . . .   33
     9.9.     Inspection  . . . . . . . . . . . . . . . . . . . . . . . . .   34
     9.10.    Operation of Properties   . . . . . . . . . . . . . . . . . .   34
     9.11.    Delivery of Guaranties  . . . . . . . . . . . . . . . . . . .   34
     9.12.    Environmental Covenant  . . . . . . . . . . . . . . . . . . .   34
     9.13.    Further Assurances  . . . . . . . . . . . . . . . . . . . . .   34

ARTICLE X     FINANCIAL COVENANTS   . . . . . . . . . . . . . . . . . . . .   35
     10.1.    Consolidated Tangible Net Worth   . . . . . . . . . . . . . .   35
     10.2.    Ratio of EBITDDA to Consolidated Interest   . . . . . . . . .   35

ARTICLE XI    NEGATIVE COVENANTS  . . . . . . . . . . . . . . . . . . . . .   35
     11.1.    Indebtedness  . . . . . . . . . . . . . . . . . . . . . . . .   35
     11.2.    Merger  . . . . . . . . . . . . . . . . . . . . . . . . . . .   36
     11.3.    Sales of Properties or Borrowing Base Subsidiaries  . . . . .   36
     11.4.    Guaranteed Obligations  . . . . . . . . . . . . . . . . . . .   37
     11.5.    Liens   . . . . . . . . . . . . . . . . . . . . . . . . . . .   37
     11.6.    Restricted Payments, etc  . . . . . . . . . . . . . . . . . .   38
     11.7.    Transactions with Affiliates  . . . . . . . . . . . . . . . .   38
     11.8.    Negative Pledges, etc   . . . . . . . . . . . . . . . . . . .   38
     11.9.    Regulation U Acquisitions   . . . . . . . . . . . . . . . . .   39
     11.10.   Investments   . . . . . . . . . . . . . . . . . . . . . . . .   39
     11.11.   Hedging Contracts   . . . . . . . . . . . . . . . . . . . . .   39
     11.12.   Approval of Consents  . . . . . . . . . . . . . . . . . . . .   40

ARTICLE XII   DEFAULTS  . . . . . . . . . . . . . . . . . . . . . . . . . .   40
     12.1.    Breach of Warranties and Misleading Statements  . . . . . . .   40
     12.2.    Nonpayment of Loans, Fees and other Obligations   . . . . . .   40
     12.3.    Breach of Certain Covenants   . . . . . . . . . . . . . . . .   40
     12.4.    Default Under Australian Loan Documents or U.S. Loan
              Documents.  . . . . . . . . . . . . . . . . . . . . . . . . .   40
     12.5.    Non-Compliance with this Agreement  . . . . . . . . . . . . .   40
     12.6.    Cross-Defaults  . . . . . . . . . . . . . . . . . . . . . . .   40
     12.7.    Voluntary Dissolution and Insolvency Proceedings and Actions    41
     12.8.    Involuntary Insolvency Proceedings or Dissolution   . . . . .   41
     12.9.    Condemnation  . . . . . . . . . . . . . . . . . . . . . . . .   41
     12.10.   Judgments   . . . . . . . . . . . . . . . . . . . . . . . . .   41
     12.11.   [Intentionally Omitted]   . . . . . . . . . . . . . . . . . .   41
     12.12.   Other Defaults Under Canadian Loan Documents  . . . . . . . .   41
     12.13.   Failure of Canadian Loan Documents  . . . . . . . . . . . . .   41
</TABLE>





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                               TABLE OF CONTENTS
                                  (CONTINUED)
<TABLE>
<CAPTION>
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<S>           <C>                                                             <C>
     12.14.   Change in Control   . . . . . . . . . . . . . . . . . . . . .   41

ARTICLE XIII  ACCELERATION, WAIVERS, AMENDMENTS, REMEDIES; RELEASES   . . .   42
     13.1.    Acceleration  . . . . . . . . . . . . . . . . . . . . . . . .   42
     13.2.    Amendments  . . . . . . . . . . . . . . . . . . . . . . . . .   42
     13.3.    Preservation of Rights  . . . . . . . . . . . . . . . . . . .   42

ARTICLE XIV   GENERAL PROVISIONS  . . . . . . . . . . . . . . . . . . . . .   43
     14.1.    [Intentionally Omitted]   . . . . . . . . . . . . . . . . . .   43
     14.2.    Governmental Regulation   . . . . . . . . . . . . . . . . . .   43
     14.3.    Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   43
     14.4.    Headings  . . . . . . . . . . . . . . . . . . . . . . . . . .   43
     14.5.    Entire Agreement  . . . . . . . . . . . . . . . . . . . . . .   43
     14.6.    Several Obligations   . . . . . . . . . . . . . . . . . . . .   43
     14.7.    Reimbursement of Costs and Expenses; Indemnification  . . . .   43
              (a)    Reimbursement of Costs and Expenses  . . . . . . . . .   43
              (b)    Indemnification  . . . . . . . . . . . . . . . . . . .   43
     14.8.    Numbers of Documents  . . . . . . . . . . . . . . . . . . . .   44
     14.9.    Severability of Provisions  . . . . . . . . . . . . . . . . .   44
     14.10.   Nonliability of Canadian Lenders  . . . . . . . . . . . . . .   44
     14.11.   CHOICE OF LAW   . . . . . . . . . . . . . . . . . . . . . . .   45
     14.12.   CONSENT TO JURISDICTION   . . . . . . . . . . . . . . . . . .   45
     14.13.   Confidentiality   . . . . . . . . . . . . . . . . . . . . . .   45

ARTICLE XV    THE AGENTS, THE ARRANGERS AND THE ENGINEERING BANKS   . . . .   45
     15.1.    Appointment of Agents   . . . . . . . . . . . . . . . . . . .   45
     15.2.    Powers  . . . . . . . . . . . . . . . . . . . . . . . . . . .   46
     15.3.    General Immunity  . . . . . . . . . . . . . . . . . . . . . .   46
     15.4.    No Responsibility for Loans, Recitals, etc  . . . . . . . . .   46
     15.5.    Action on Instructions of Canadian Lenders  . . . . . . . . .   46
     15.6.    Employment of Agents and Counsel  . . . . . . . . . . . . . .   46
     15.7.    Reliance on Documents; Counsel  . . . . . . . . . . . . . . .   46
     15.8.    Reimbursement and Indemnification   . . . . . . . . . . . . .   46
     15.9.    Rights as a Canadian Lender   . . . . . . . . . . . . . . . .   46
     15.10.   Canadian Lender Credit Decision   . . . . . . . . . . . . . .   47
     15.11.   Certain Successor Agents  . . . . . . . . . . . . . . . . . .   47

ARTICLE XVI   SETOFF; RATABLE PAYMENTS  . . . . . . . . . . . . . . . . . .   47
     16.1.    Setoff  . . . . . . . . . . . . . . . . . . . . . . . . . . .   47
     16.2.    Ratable Payments  . . . . . . . . . . . . . . . . . . . . . .   47

ARTICLE XVII  BENEFIT OF AGREEMENT; ASSIGNMENTS; PARTICIPATIONS   . . . . .   48
     17.1.    Successors and Assigns  . . . . . . . . . . . . . . . . . . .   48
     17.2.    Participations  . . . . . . . . . . . . . . . . . . . . . . .   48
     17.3.    Assignments   . . . . . . . . . . . . . . . . . . . . . . . .   49
     17.4.    Dissemination of Information  . . . . . . . . . . . . . . . .   49
</TABLE>





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                               TABLE OF CONTENTS
                                  (CONTINUED)
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<CAPTION>
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<S>                                                                           <C>
ARTICLE XVIII NOTICES   . . . . . . . . . . . . . . . . . . . . . . . . . .   49
     18.1.    Giving Notice   . . . . . . . . . . . . . . . . . . . . . . .   49
     18.2.    Change of Address   . . . . . . . . . . . . . . . . . . . . .   50

ARTICLE XIX   COUNTERPARTS  . . . . . . . . . . . . . . . . . . . . . . . .   50

ARTICLE XX    NO ORAL AGREEMENTS  . . . . . . . . . . . . . . . . . . . . .   50


EXHIBITS:
- -------- 

EXHIBIT A       NOTE
EXHIBIT B       FORM OF LEGAL OPINION
EXHIBIT C       COMPLIANCE CERTIFICATE
EXHIBIT D       ASSIGNMENT AGREEMENT
EXHIBIT E       CONTINUATION/CONVERSION NOTICE
EXHIBIT F       FORM OF CANADIAN COUNSEL OPINION
EXHIBIT G       CONFIDENTIALITY AGREEMENT
EXHIBIT H       FORM OF SUBSIDIARY GUARANTY
EXHIBIT I       FORM OF PARENT GUARANTY


SCHEDULES:
- --------- 

SCHEDULE A      EURODOLLAR SPREAD, FACILITY FEE RATES
SCHEDULE 8.8    SUBSIDIARIES; BORROWING BASE SUBSIDIARIES
SCHEDULE 11.1   INDEBTEDNESS; LIENS
SCHEDULE 11.10  INVESTMENTS
</TABLE>





                                       v
<PAGE>   7
                                CREDIT AGREEMENT

       This Agreement, dated as of October 31, 1996, is among Apache Canada
Ltd., a corporation organized under the laws of the Province of Alberta, Canada
(the "Company"), the various commercial lending institutions as are or may
become parties hereto (the "Canadian Lenders"), The First National Bank of
Chicago, as Global Administrative Agent (the "Global Administrative Agent"),
Bank of Montreal, as Canadian Administrative Agent (the "Canadian
Administrative Agent"), First Chicago Capital Markets, Inc., as Arranger, and
Chase Securities Inc., as Arranger.

                                   RECITALS:

       1.     The Company desires to obtain commitments from the Canadian
Lenders pursuant to which extensions of credit in the form of Loans will be
made in the amounts and currencies herein provided pursuant to the terms and
provisions herein set forth.

       2.     The proceeds of the Loans will be used by the Company to
refinance existing debt of the Company and for general corporate purposes.

       3.     The Canadian Lenders are willing, on the terms and subject to the
conditions herein set forth, to extend such commitments and make such
extensions of credit to the Company.

       4.     The Company, the Canadian Lenders, the Global Administrative
Agent, the Canadian Administrative Agent and the Arrangers hereby agree as
follows:


                                   ARTICLE I

                     DEFINITIONS AND TERMS OF CONSTRUCTION

       1.1.   Definitions.  The following terms (whether or not underscored)
when used in this Agreement, including its preamble and recitals, shall, except
where the context otherwise requires, have the following meanings (such
meanings to be equally applicable to the singular and the plural forms
thereof):

       "Accepting Lender" is defined in Section 2.2.

       "Acquisition" means any transaction, or any series of related
transactions, consummated after the date of this Agreement, by which the
Company or any of the Subsidiaries (i) acquires any going business or all or
substantially all of the assets of any Person or division thereof, whether
through purchase of assets, merger or otherwise or (ii) directly or indirectly
acquires (in one transaction or as the most recent transaction in a series of
transactions) at least a majority (in number of votes) of the securities of a
corporation which have ordinary voting power for the election of directors
(other than securities having such power only by reason of the happening of a
contingency).

       "Advance" means a borrowing hereunder consisting of the aggregate amount
of the several Loans made by the Canadian Lenders or any of them to the Company
on the same Borrowing Date, at the same Rate Option and, in the case of
Eurodollar Loans, for the same Interest Period, which results in an increase in
the aggregate amount of outstanding Loans under this Agreement.

       "Affiliate" of any Person means any Person directly or indirectly
controlling, controlled by or under direct or indirect common control of such
Person; provided, however, notwithstanding the foregoing, the definition of
"Affiliate" shall not include any Subsidiary of the Company.  A Person shall be
deemed to control another Person
<PAGE>   8
if the controlling Person owns directly or indirectly 20% or more of any class
of voting securities of the controlled Person or possesses, directly or
indirectly, the power to direct or cause the direction of the management or
policies of the controlled Person, whether through ownership of stock, by
contract or otherwise.

       "Agents" means each of the Global Administrative Agent, the Canadian
Administrative Agent, the Arrangers, and the Engineering Banks.

       "Agreed Currency" is defined in Section 6.9(a).

       "Aggregate Commitment" means, as of the time a determination thereof is
to be made, the sum of the Commitments of all the Canadian Lenders hereunder,
being $125,000,000 as of the date hereof, and as reduced from time to time
after the date hereof pursuant to Sections 4.5 and 13.1.

       "Agreement" means this Credit Agreement, as it may be amended,
supplemented, restated or otherwise modified and in effect from time to time.

       "Agreement Accounting Principles" means, on any date, those generally
accepted accounting principles applied in preparing the financial statements
referred to in Section 8.4.

       "Alternate Base Rate" means, on any date and with respect to all
Floating Rate Advances, a fluctuating rate of interest per annum equal to the
higher of (i) the U.S. Base Rate, and (ii) the Federal Funds Effective Rate
most recently determined by the Global Administrative Agent plus 1/2%.  Changes
in the rate of interest on that portion of any Advance maintained as a Floating
Rate Advance will take effect simultaneously with each change in the Alternate
Base Rate.  The Global Administrative Agent will give notice promptly to the
Company and the Canadian Lenders of changes in the Alternate Base Rate.

       "Anniversary Date" means any October 31, with the first such date being
October 31, 1997.

       "Annual Certificate of Extension" means a certificate of the Parent and
the Company, executed by an Authorized Officer and delivered to the Global
Administrative Agent and the Canadian Administrative Agent, which requests an
extension of the then scheduled Termination Date pursuant to Section 2.2.

       "Apache Energy Limited" means Apache Energy Limited (ACN 009 301 964), a
corporation organized under the laws of the State of Western Australia,
Australia.

       "Apache Oil Australia" means Apache Oil Australia Pty. Limited (ACN 050
611 688), a corporation organized under the laws of the State of New South
Wales, Australia.

       "Approved Canadian Lender" means Canadian chartered banks which have a
long term debt rating of A Low (or the then equivalent grade) or higher by
DBRS, or, if not then rated by DBRS, of A Low (or the then equivalent grade) or
higher by CBRS.

       "Approved Engineers' Report" shall have the meaning ascribed to such
term in the U.S. Credit Agreement (without amendment except as permitted
pursuant to the Intercreditor Agreement).

       "Arranger" means each of First Chicago Capital Markets, Inc. and Chase
Securities Inc. in their respective capacities as arrangers pursuant to Article
XV.

       "Assignment Agreement" means an agreement executed by an assignor
Canadian Lender and an assignee Canadian Lender pursuant to Section 17.3
substantially in the form of Exhibit D hereto.





                                       2
<PAGE>   9
       "Australian Administrative Agent" means Chase Securities Australia
Limited (ACN 002 888 011) in its capacity as Administrative Agent for the
lenders party to the Australian Credit Agreement and any successor thereto.

       "Australian Borrowers" means Apache Energy Limited and Apache Oil
Australia.

       "Australian Commitments" has the meaning of the term "Aggregate
Commitment" as defined in the Australian Credit Agreement.

       "Australian Credit Agreement" means that certain Credit Agreement of
even date herewith among the Australian Borrowers, the Australian Lenders, The
First National Bank of Chicago, as Global Administrative Agent, the Australian
Administrative Agent, First Chicago Capital Markets, Inc., as Arranger, and
Chase Securities Inc., as Arranger, as it may be amended, supplemented,
restated or otherwise modified and in effect from time to time.

       "Australian Lenders" means the financial institutions listed on the
signature pages of the Australian Credit Agreement and their respective
successors and assigns.

       "Australian Loan Documents" means the Australian Credit Agreement, any
notes, any guaranties, any assignment agreements, the agreement with respect to
fees, the Intercreditor Agreement and the Indemnity Agreements, together with
all exhibits, schedules and attachments thereto, and all other agreements,
documents, certificates, financing statements and instruments from time to time
executed and delivered pursuant to or in connection with any of the foregoing.

       "Authorized Officer" means, with respect to the Company, the President,
the Vice President and the Treasurer of the Company, and any officer of the
Company specified as such to the Canadian Administrative Agent and the Global
Administrative Agent in writing by any of the aforementioned officers of the
Company, or, with respect to the Parent, the Chairman, the President, the Vice
President and Chief Financial Officer and the Treasurer of the Parent, and any
officer of the Parent, specified as such to the Global Administrative Agent in
writing by any of the aforementioned officers of the Parent.

       "Borrowing Base Debt" shall have the meaning ascribed to such term in
the U.S. Credit Agreement (without amendment except as permitted pursuant to
the Intercreditor Agreement).

       "Borrowing Base Subsidiary" means, at any time, any Subsidiary of the
Company which owns or controls any Properties and any Subsidiary that owns or
controls, directly or indirectly, another Subsidiary that owns or controls any
Properties.  The Borrowing Base Subsidiaries of the Company as of the Global
Effective Date are listed on Schedule 8.8 hereto.

       "Borrowing Date" means any Business Day on which an Advance is made
hereunder.

       "Borrowing Notice" is defined in Section 3.3.

       "Business Day" means (i) with respect to any borrowing, payment or rate
selection of Eurodollar Advances, a day other than Saturday or Sunday on which
banks are open for business in Calgary, Toronto, Chicago and New York and on
which dealings in United States dollars are carried on in the London interbank
market and (ii) for all other purposes, a day other than Saturday or Sunday on
which banks are open for business in Calgary, Toronto, Chicago and New York.

       "Canadian Administrative Agent" means Bank of Montreal in its capacity
as administrative agent for the lenders party to this Agreement and any
successor thereto.





                                       3
<PAGE>   10
       "Canadian Lenders" means the financial institutions listed on the
signature pages of this Agreement and their respective successors and assigns
in accordance with Section 17.3 (including any commercial lending institution
becoming a party hereto pursuant to an Assignment Agreement) or otherwise by
operation of law.

       "Canadian Loan Documents" means this Agreement, the Notes, the Parent
Guaranty, the Guaranties, the Assignment Agreements, the agreement with respect
to fees described in Section 2.4(b), the Intercreditor Agreement and the
Indemnity Agreements, together with all exhibits, schedules and attachments
thereto, and all other agreements, documents, certificates, financing
statements and instruments from time to time executed and delivered pursuant to
or in connection with any of the foregoing.

       "Capitalized Lease" means, with any respect to a Person, any lease of
property by such Person as lessee which would be capitalized on a balance sheet
of such Person prepared in accordance with Agreement Accounting Principles.

       "Capitalized Lease Obligations" means, with respect to a Person, the
amount of the obligations of such Person under Capitalized Leases which would
be shown as a liability on a balance sheet of such Person prepared in
accordance with Agreement Accounting Principles.

       "Cash Equivalent Investment" means, at any time:

              (a)    any evidence of Indebtedness, maturing not more than one
       year after such time, issued or guaranteed by the United States
       Government or by the Government of Canada;

              (b)    commercial paper, maturing not more than nine months from
       the date of issue, which is issued by any Agent or any Agent's holding
       company, or by (i) a corporation (other than the Parent or an Affiliate
       of the Parent) organized under the laws of any state of the United
       States or of the District of Columbia and rated A-1 by S&P or P-1 by
       Moody's, (ii) any Combined Lender (or its holding company) which has (or
       which at the time is a subsidiary of a holding company which has) a
       Qualified Long Term Rating, or which is an Approved Canadian Lender, or
       (iii) a corporation (other than the Parent or an Affiliate of the
       Parent) organized under the laws of Canada or any province thereof and
       rated R-1 (middle/low) (or the then equivalent grade) or higher by DBRS,
       or, if not then rated by DBRS, which is rated A-1 (or the then
       equivalent grade) or higher by CBRS;

              (c)    any certificate of deposit, time deposit or banker's
       acceptance, maturing not more than one year after such time, which is
       issued or accepted by any Agent or any Agent's holding company, or by
       either (i) a commercial banking institution that is a member of the
       Federal Reserve System and has a combined capital and surplus and
       undivided profits of not less than $500,000,000, which has (or which at
       the time is a subsidiary of a holding company which has) a Qualified
       Long Term Rating, (ii) any Combined Lender which has (or which is a
       subsidiary of a holding company which has) a Qualified Long Term Rating,
       or (iii) any Approved Canadian Lender; or

              (d)    any repurchase agreement entered into with any Agent or
       any Combined Lender (or other commercial banking institution of the
       stature referred to in clause (c)(i)) which (i) is secured by a fully
       perfected security interest in any obligation of the type described in
       any of clauses (a) through (c); and (ii) has a market value at the time
       such repurchase agreement is entered into of not less than 100% of the
       repurchase obligation of such Combined Lender or Agent (or other
       commercial banking institution) thereunder.

       "CBRS" means C.B.R.S. Inc. carrying on business as "Canadian Bond Rating
Service" and its successors.

       "CERCLA" means the Comprehensive Environmental Response, Compensation
and Liability Act of 1980, as amended.





                                       4
<PAGE>   11
       "Change in Control" means:

                     (a)    the failure by the Company to own, free and clear
              of all Liens or encumbrances, 100% of the outstanding capital
              stock of any Subsidiary which is a Guarantor on a fully diluted
              basis, except as a result of the merger of any such Subsidiary
              into the Company or any Subsidiary of the Company pursuant to
              Section 11.2; provided, however, that, in the event of a merger
              of any such Subsidiary with a Subsidiary, such Subsidiary shall
              at its own expense deliver to the Canadian Administrative Agent a
              duly executed Guaranty, substantially in the form of Exhibit H,
              together with such related documents and opinions as the Canadian
              Administrative Agent may request; or

                     (b)    the failure by the Company to own, directly or
              indirectly, free and clear of all Liens, other than Liens
              permitted under Section 11.5 hereof, 100% of the outstanding
              capital stock of each Borrowing Base Subsidiary on a fully
              diluted basis except as a result of a merger of such Borrowing
              Base Subsidiary with the Company, another Borrowing Base
              Subsidiary or with any other Person as permitted pursuant to
              Section 11.2, or as a result of a sale of such Borrowing Base
              Subsidiaries as permitted pursuant to Section 11.3; or

                     (c)    the failure by the Parent to own, directly or
              indirectly, free and clear of all Liens, other than Liens
              permitted under Section 11.5 of the U.S. Credit Agreement, 100%
              of the outstanding capital stock of the Company on a fully
              diluted basis.

       "Chase" means The Chase Manhattan Bank, in its individual capacity and
its successors.

       "Claims" is defined in Section 14.7.

       "Combined Commitments" means, at any time, the aggregate of the
Aggregate Commitments, the U.S. Commitments and the Australian Commitments at
such time.

       "Combined Lenders" means the Canadian Lenders, the U.S. Lenders and the
Australian Lenders.

       "Combined Required Lenders" means, at any time, Combined Lenders having
greater than 66-2/3% of the aggregate amount of the Combined Commitments at
such time.

       "Commitment" means, with respect to each Canadian Lender, the obligation
of such Canadian Lender to make Loans not exceeding the amount set forth as its
Commitment opposite its signature below or in the relevant Assignment
Agreement, as such amount may be modified from time to time pursuant to the
provisions of this Agreement, including any Assignment Agreement executed by
such Canadian Lender and its Assignee Lender and delivered pursuant to Section
17.3 and any reduction pursuant to Sections 4.5, or 13.1; it being understood,
however, that a change in the Global Borrowing Base does not constitute a
modification of any Commitment.

       "Company" is defined in the Preamble.

       "Consolidated Interest Expense" means, for any period for which a
determination thereof is to be made, total interest expense, whether paid or
accrued (but excluding that attributable to Capitalized Leases), of the Parent
and its Consolidated Subsidiaries on a consolidated basis including, without
limitation, all commissions, discounts and other fees and charges owing with
respect to letters of credit and bankers' acceptance financing.

       "Consolidated Net Income" means, for any period for which a
determination thereof is to be made, the net income (or loss) after taxes of
the Parent and its Consolidated Subsidiaries on a consolidated basis for such
period taken as a single accounting period; provided that there shall be
excluded the income (or loss) of any Affiliate of the Parent or other Person
(other than a Consolidated Subsidiary of the Parent) in which any Person (other
than the





                                       5
<PAGE>   12
Parent or any of the Consolidated Subsidiaries) has a joint interest, except to
the extent of the amount of dividends or other distributions actually paid to
the Parent or any of the Consolidated Subsidiaries by such Affiliate or other
Person during such period.

       "Consolidated Subsidiary" means, in relation to any Person as of the
time a determination thereof is to be made, any Subsidiary or other entity the
accounts of which would be consolidated with those of the Person in its
consolidated financial statements if such statements were prepared as of such
date.

       "Consolidated Tangible Net Worth" means, as of the time a determination
thereof is to be made, the consolidated stockholders' equity of the Parent and
its Consolidated Subsidiaries, less their consolidated intangible assets, all
determined as of such date in accordance with Agreement Accounting Principles.

       "Continuation/Conversion Notice" means a notice by means of telecopy or
telephone (confirmed in writing promptly thereafter if by telephone) of
continuation or conversion, which notice shall specify the principal amount to
be continued or converted, the date of such continuation or conversion, the
type of Loan and, if such Loan is to be a Revolving Eurodollar Loan, the
Interest Period, which notice, when delivered by telecopy or confirmed in
writing, shall be substantially in the form of Exhibit E and executed on behalf
of the Company by an Authorized Officer.

       "DBRS" means Dominion Bond Rating Service Limited and its successors.

       "Debt" means all Indebtedness of the type referred to in clauses (i),
(ii), (iii), (iv) and (v) of the definition of Indebtedness.

       "Debt/Capitalization Ratio" means, as of the time a determination
thereof is to be made, the ratio expressed as a decimal of (x) the aggregate
outstanding amount of the consolidated Debt of the Parent and its Consolidated
Subsidiaries, to (y) the sum of the consolidated stockholders' equity of the
Parent and its Consolidated Subsidiaries plus the aggregate outstanding amount
of the consolidated Debt of the Parent and its Consolidated Subsidiaries;
provided, however, that, for purposes of the definition of Eurodollar Spread,
the Debt/Capitalization Ratio on each day commencing on the forty-fifth (45th)
day following the end of a calendar quarter shall be deemed to be the lesser of
(a) the Debt/Capitalization Ratio as of the end of such calendar quarter and
(b) the Debt/Capitalization Ratio as of the final day of the month following
the end of such calendar quarter, in each case based on a certificate received
by the Global Administrative Agent and the U.S. Lenders from an Authorized
Officer of the Parent pursuant to Section 9.1(k) of the U.S. Credit Agreement;
provided, further, that until the forty-fifth (45th) day following the calendar
quarter ending September 30, 1996, the Debt/Capitalization Ratio shall be
deemed to be "(0.55" for purposes of the definition of Eurodollar Spread and
the calculation of applicable fees.

       "Debt Limit Excession" means the condition existing at any time prior to
the Termination Date in which the outstanding principal balance of the
Borrowing Base Debt as of such date exceeds the Global Borrowing Base as of
such date.

       "Declining Lender" is defined in Section 2.2.

       "Default" means any event described in Article XII.

       "Downgrade Condition" shall have the meaning assigned to such term in
the U.S. Credit Agreement (without amendment except as permitted pursuant to
the Intercreditor Agreement).

       "EBITDDA" means, for any period for which a determination thereof is to
be made, without duplication, the sum of the amounts for such period of (i)
Consolidated Net Income, (ii) Consolidated Interest Expense, (iii) depreciation
expense and depletion expense, (iv) amortization expense, (v) federal and state
taxes, (vi) other non-cash charges and expenses and (vii) any losses arising
outside of the ordinary course of business which have been





                                       6
<PAGE>   13
included in the determination of Consolidated Net Income less any gains arising
outside of the ordinary course of business which have been included in the
determination of Consolidated Net Income, all as determined on a consolidated
basis for the Parent and its Consolidated Subsidiaries.

       "Engineering Bank" means each of First Chicago and Chase in their
respective capacities as Engineering Banks.

       "Environmental Law" means any federal, state, provincial, territorial or
local statute (including for example and without limitation, the Environmental
Protection and Enhancement Act (Alberta) and the Canadian Environmental
Protection Act), or rule or regulation promulgated thereunder, any judicial or
administrative order or judgment or written administrative request to which the
Company or any Subsidiary is party or any of which are applicable to the
Company or any Subsidiary or the Properties (whether or not by consent), and
any provision or condition of any permit, license or other governmental
operating authorization, relating to (A) protection of the environment, persons
or the public welfare from actual or potential exposure for the effects of
exposure to any actual or potential release, discharge, spill or emission
(whether past or present) of, or regarding the manufacture, processing,
production, gathering, transportation, importation, use, treatment, storage or
disposal of, any chemical, raw material, pollutant, contaminant or toxic,
corrosive, hazardous, or non-hazardous substance or waste, including petroleum;
or (B) occupational or public health or safety.

       "Equivalent Amount" in one currency (the "first currency") of an amount
in another currency (the "other currency") means the amount of the first
currency which is required to purchase such amount of the other currency at the
rate determined on the basis of the Spot Rate of Exchange for the other
currency against the first currency at the time of determination.

       "Eurodollar Advance" means a Revolving Advance which bears interest at a
Eurodollar Rate.

       "Eurodollar Base Rate" means, with respect to a Eurodollar Advance for
the relevant Interest Period, the rate determined by the Global Administrative
Agent to be the arithmetic average of the rates reported to the Global
Administrative Agent by each Reference Lender as the rate at which deposits in
U.S. dollars are offered by such Reference Lender to first-class banks in the
London interbank market at approximately 11 a.m. (London time) two Business
Days prior to the first day of such Interest Period, in the approximate amount
of such Reference Lender's relevant Eurodollar Loan and having a maturity
approximately equal to such Interest Period.  If any Reference Lender fails to
provide such quotation to the Global Administrative Agent, then the Global
Administrative Agent shall determine the Eurodollar Base Rate on the basis of
the quotations of the remaining Reference Lender.

       "Eurodollar Loan" means a Loan which bears interest at a Eurodollar
Rate.

       "Eurodollar Rate" means, with respect to a Eurodollar Loan or Eurodollar
Advance for each day during the relevant Interest Period, the sum of (i) the
quotient of (a) the Eurodollar Base Rate applicable to that Interest Period,
divided by (b) one minus the Reserve Requirement (expressed as a decimal)
applicable to that Interest Period, plus (ii) the Eurodollar Spread applicable
to that day.  The Eurodollar Rate shall be rounded, if not a whole number
multiple of 1/16 of 1%, to the next higher 1/16 of 1%.

       "Eurodollar Spread" means, on any date and with respect to each
Eurodollar Advance, the applicable rate per annum set forth in Schedule A based
on the applicable Rating Level and Debt/Capitalization Ratio on such date.

       "Excluded Principal Debt" shall have the meaning ascribed to such term
in the U.S. Credit Agreement (without amendment except as permitted pursuant to
the Intercreditor Agreement).

       "Federal Funds Effective Rate" means, for any period for which a
determination thereof is made, a fluctuating interest rate per annum equal for
each day during such period to (i) the weighted average of the rates





                                       7
<PAGE>   14
on overnight federal funds transactions with members of the Federal Reserve
System arranged by federal funds brokers, as published for such day (or, if
such day is not a Business Day, for the preceding Business Day) by the Federal
Reserve Bank of New York; or (ii) if such rate is not so published for any day
which is a Business Day, the average of the quotations at approximately 11 a.m.
(Toronto time) for such day on such transactions received by the Global
Administrative Agent from three federal funds brokers of recognized standing
selected by it.

       "First Chicago" means The First National Bank of Chicago in its
individual capacity, and its successors and assigns.

       "Floating Rate Advance" means a Revolving Advance which bears interest
at the Alternate Base Rate.

       "Floating Rate Loan" means a Loan which bears interest at the Alternate
Base Rate.

       "Global Administrative Agent" means The First National Bank of Chicago
or any Affiliate thereof in its capacity as global administrative agent for the
Combined Lenders pursuant to Article XV, and not in its individual capacity as
a U.S. Lender or in its capacity as an Engineering Bank and any successor
Global Administrative Agent appointed pursuant to Article XV.

       "Global Borrowing Base" shall have the meaning ascribed to such term in
the U.S. Credit Agreement (without amendment except as permitted pursuant to
the Intercreditor Agreement).

       "Global Credit Facility Debt" shall have the meaning ascribed to such
term in the U.S. Credit Agreement (without amendment except as permitted
pursuant to the Intercreditor Agreement).

       "Global Effective Date" means a date agreed upon by the Parent, the
Company, the Arrangers, the Canadian Administrative Agent and the Global
Administrative Agent as the date on which the conditions precedent set forth in
Section 7.1 of this Agreement have been satisfied.

       "Global Effectiveness Notice" means a notice and certificate of the
Parent and the Company properly executed by an Authorized Officer of each the
Parent and the Company addressed to the Combined Lenders and delivered to the
Global Administrative Agent, in sufficient number of counterparts to provide
one for each Combined Lender and each Agent, whereby the Parent and the Company
certify satisfaction of all the conditions precedent to the effectiveness under
Section 7.1 of this Agreement, under Section 7.1 of the Australian Credit
Agreement and under Section 7.1 of the U.S. Credit Agreement.

       "Global Loan Documents" means the U.S. Loan Documents, the Australian
Loan Documents, the Canadian Loan Documents, the Intercreditor Agreement and
Indemnity Agreements, together with all exhibits, schedules and attachments
thereto, and all other agreements, documents, certificates, financing
statements and instruments from time to time executed and delivered pursuant to
or in connection with any of the foregoing.

       "Guaranteed Obligation" means, with respect to any Person as of the time
a determination thereof is to be made (without duplication), (i) any
obligation, contingent or otherwise, of any such Person whether as guarantor,
surety or otherwise with respect to any Indebtedness (other than Indebtedness
for which the Company or any Borrowing Base Subsidiary of the Company is the
primary obligor), and (ii) any obligation to a foreign government or foreign
governmental agency under which such Person must either perform or pay a sum of
money in lieu of performance; provided, however, that any obligation of any
Person which is Indebtedness of the Company or one or more of its Borrowing
Base Subsidiaries shall not be a Guaranteed Obligation of such Person for
purposes of this Agreement; and provided further that obligations pursuant to
any oil, gas and/or mineral lease, farm-out agreement, division order, contract
for the sale, exchange or processing of oil, gas and/or other hydrocarbons,
unitization and pooling declaration and agreement, operating agreement,
development agreement, area of mutual interest agreement, marketing agreement
or arrangement, forward sales of Hydrocarbons and other agreements which are
customary in the oil, gas and other mineral exploration, development and
production business and in the business of processing





                                       8
<PAGE>   15
of gas and gas condensate production for the extraction of products therefrom
are not Guaranteed Obligations for purposes of this definition.

       "Guarantor" means each of the Parent and any Subsidiary of the Company
which is a guarantor pursuant to the Parent Guaranty or a Guaranty,
respectively, in favor of the Agents and the Canadian Lenders delivered
pursuant to Section 9.11.

       "Guaranty" means each guaranty delivered pursuant to Section 9.11, or as
required by the definition of "Change of Control", in each case as such
guaranty may from time to time be amended, supplemented, restated, reaffirmed
or otherwise modified.

       "Hazardous Material" means (a) any "hazardous substance," as defined by
CERCLA; (b) any "hazardous waste," as defined by the Resource Conservation and
Recovery Act, as amended; (c) any petroleum, crude oil or any fraction thereof;
(d) any hazardous, dangerous or toxic chemical, material, waste or substance
within the meaning of any Environmental Law; (e) any radioactive material,
including any naturally occurring radioactive material, and any source, special
or by-product material as defined in 42 U.S.C. Section  2011 et. seq., and any
amendments or reauthorizations thereof; (f) asbestos-containing materials in
any form or condition; or (g) polychlorinated biphenyls in any form or
condition.

       "Highest Lawful Rate" is defined in Section 3.2.

       "Hydrocarbon Interests" means leasehold and other interests in or under
leases with respect to property located in Canada and any other countries
acceptable to the Combined Required Lenders, mineral fee interests, production
sharing contracts, overriding royalty and royalty interests, net profit
interests and production payment interests, insofar and only insofar as such
interests relate to Hydrocarbons located in the United States of America,
Canada, Australia and any other countries acceptable to the Combined Required
Lenders, including any reserved or residual interests of whatever nature.

       "Hydrocarbons" means oil, gas and all other liquid or gaseous
hydrocarbons and all products refined therefrom and all other minerals and
substances, including sulfur, geothermal steam, water, carbon dioxide, helium
and any and all other minerals, ores or substances of value and the products
and proceeds therefrom.

       "include" or "including" means including without limiting the generality
of any description preceding such terms, and, for purposes of this Agreement
and each other Canadian Loan Document, the parties hereto agree that the rule
of ejusdem generis shall not be applicable to limit a general statement, which
is followed by or referable to an enumeration of specific matters, to matters
similar to the matters specifically mentioned.

       "Indebtedness" means, with respect to a Person at any time, such
Person's (i) obligations for borrowed money, (ii) obligations representing the
deferred purchase price of property or services, including obligations payable
out of Hydrocarbon production, other than accounts payable arising in the
ordinary course of such Person's business payable on terms customary in the
trade, (iii) obligations, whether or not assumed, secured by Liens (other than
Liens permitted by Section 11.5, clauses (a) through (d) or clauses (f) through
(m)) or payable out of the proceeds of production from property now or
hereafter owned or acquired by such Person, (iv) obligations (other than the
obligations previously described in clauses (i), (ii), or (iii) of this
definition) which are evidenced by notes, bonds, debentures, bankers'
acceptances, or other instruments, (v) Capitalized Lease Obligations, (vi)
liabilities under interest rate swap, exchange, collar or cap agreements and
all other agreements or arrangements designed to protect such Person against
fluctuations in interest rates or currency exchange rates, (vii) net
liabilities under commodity hedge, commodity swap, exchange, collar or cap
agreements, fixed price agreements and all other agreements or arrangements
designed to protect a person against fluctuations in oil or gas prices provided
that, each such contract will be marked-to-market and the gain or loss on each
such contract and any amounts on deposit with any counterparties or exchanges
shall be included in determining such Person's net liability with respect to
such contract, (viii) obligations, contingent or otherwise, relative to the
amount of all letters of credit, whether or not





                                       9
<PAGE>   16
drawn, and (ix) all Guaranteed Obligations of such Person in respect of any of
the foregoing; provided, however, that "Indebtedness" shall not include any
amounts included as deferred credits on the financial statements of such Person
or of a consolidated group including such Person, determined in accordance with
Agreement Accounting Principles; provided further that for purposes of the
foregoing clauses (ii), (iii) and (ix) and the "other instruments" described in
the foregoing clause (iv), obligations pursuant to any oil, gas and/or mineral
lease, farm-out agreement, division order, contract for the exchange or
processing of oil, gas and/or other hydrocarbons, unitization and pooling
declaration and agreement, operating agreement, development agreement, area of
mutual interest agreement, marketing agreement or arrangement, forward sales of
Hydrocarbons, and other agreements which are customary in the oil, gas and
other mineral exploration, development and production business and in the
business of processing of gas and gas condensate production for the extraction
of products therefrom shall not be Indebtedness.

       "Indemnified Person" is defined in Section 14.7.

       "Indemnity Agreements" means (i) that certain letter agreement, dated as
of October 31, 1996, among the Company, the Global Administrative Agent, the
Australian Administrative Agent, the Canadian Administrative Agent and the
Combined Lenders, (ii) that certain letter agreement, dated as of October 31,
1996, among the Australian Borrowers, the Global Administrative Agent, the
Australian Administrative Agent, the Canadian Administrative Agent and the
Combined Lenders, and (iii) that certain letter agreement, dated as of October
31, 1996, among the Parent, the Global Administrative Agent, the Australian
Administrative Agent, the Canadian Administrative Agent and the Combined
Lenders, each in form and substance acceptable to the Agents and the Arrangers,
as each may be amended, supplemented, restated or otherwise modified from time
to time.

       "Intercreditor Agreement" means that certain Intercreditor Agreement of
even date herewith among the Global Administrative Agent, the Co-Agent, the
Canadian Administrative Agent, the Australian Administrative Agent, the
Arrangers and the Combined Lenders, in form and substance acceptable to the
Agents and the Arrangers, as it may be amended, supplemented, restated or
otherwise modified and in effect from time to time.

       "Interest Period" means, with respect to a Eurodollar Advance, a period
of one (1), two (2), three (3) or, subject to availability, six (6) months
commencing on a Business Day selected by the Company pursuant to this
Agreement.  Such Interest Period shall end on (but exclude) the day which
corresponds numerically to such date one (1), two (2), three (3) or six (6)
months thereafter, provided, however, that if there is no such numerically
corresponding day in such next, second, third or sixth succeeding month, such
Eurodollar Interest Period shall end on the last Business Day of such next,
second, third or sixth succeeding month.  If an Interest Period would otherwise
end on a day which is not a Business Day, such Interest Period shall end on the
next succeeding Business Day; provided, however, that if said next succeeding
Business Day falls in the next month, such Interest Period shall end on the
immediately preceding Business Day.

       "Investment" means, with respect to any Person, any loan, advance,
extension of credit (excluding accounts receivable arising in the ordinary
course of business on terms customary in the trade) or contribution of capital
by such Person to any other Person or any investment in, or purchase or other
acquisition of, the stock, notes, debentures or other securities of any other
Person made by such Person.  The amount of any Investment shall be the original
principal or capital amount thereof less all returns of principal or equity
thereon (and without adjustment by reason of the financial condition of such
other Person) and shall, if made by the transfer or exchange of property other
than cash, be deemed to have been made in an original principal or capital
amount equal to the fair market value of such property.

       "Judgment Currency" is defined in Section 6.9(b).

       "Lending Installation" means any office, branch, subsidiary or affiliate
of any Canadian Lender or the Canadian Administrative Agent.





                                       10
<PAGE>   17
       "Lien" means any interest in assets or property securing an obligation
owed to, or a claim by, a Person other than the owner of the asset or property,
whether such interest is based on the common law, statute or contract, and
whether such obligation or claim is fixed or contingent, and including any
security interest, mortgage, pledge, lien, claim, charge, encumbrance, contract
for deed, installment sales contract, production payment, lessor's interest
under a Capitalized Lease or analogous instrument, in, of or on any Person's
assets or properties in favor of any other Person.

       "Loan" means, with respect to a Canadian Lender, a revolving loan made
by such Canadian Lender pursuant to Sections 2.1 and 3.3 as the result of a
Borrowing Notice from the Company requesting an Advance.

       "Material Adverse Effect" means with respect to any matter that such
matter (i) could reasonably be expected to materially and adversely affect the
assets, business, properties, condition (financial or otherwise), prospects, or
results of operations of the Parent and its Subsidiaries, taken as a whole, or
the value or condition of the Properties taken as a whole, or the ability of
the Parent or any Subsidiary of the Parent which is a party to a Canadian Loan
Document to perform its respective obligations under any of the Canadian Loan
Documents to which it is party, or (ii) has been brought by or before any court
or arbitrator or any governmental body, agency or official, and draws into
question or otherwise has or reasonably could be expected to have a material
adverse effect on the validity or enforceability of any material provision of
any Canadian Loan Document against any obligor party thereto or the rights,
remedies and benefits available to the Agents and the Canadian Lenders under
the Canadian Loan Documents, respectively.

       "Moody's" means Moody's Investors Service, Inc. and any successor
thereto that is a nationally-recognized rating agency.

       "1996 Engineers' Report" means those certain Supplemental Reserve
Reports as of January 1, 1996 of the Parent's engineers, Ryder Scott Company
Petroleum Engineers, dated as of April 16, 1996, with respect to the
Properties, copies of which have been delivered to the Global Administrative
Agent, the Canadian Administrative Agent and each of the Canadian Lenders.

       "Non-Borrowing Base Subsidiary" means, at any time, any Subsidiary of
the Company which is not a Borrowing Base Subsidiary.

       "Note" means a promissory note in substantially the form of Exhibit A
hereto (with appropriate insertions and deletions), duly executed and delivered
to the Canadian Administrative Agent by the Company and payable to the order of
a Canadian Lender in the amount of its Commitment, including any amendment,
modification, renewal or replacement of such promissory note.

             "Notice of Assignment" is defined in Section 17.3(b).

       "Obligations" means all unpaid principal of and accrued and unpaid
interest on the Notes, all accrued and unpaid facility fees, and all other
obligations of the Company or any Subsidiary to any Canadian Lender or any
Agent, whether or not contingent, arising under or in connection with any of
the Canadian Loan Documents, and all obligations in respect of any interest
rate swap or interest rate cap or collar agreement or other interest rate
hedging agreement entered into by the Company or any Subsidiary with any
Canadian Lender.

       "or" as used in this Agreement is not exclusive.

       "Original Termination Date" means October 31, 2001.

       "Other Currency" is defined in Section 6.9(a).

       "Parent" means Apache Corporation, a corporation organized under the
laws of the State of Delaware.





                                       11
<PAGE>   18
       "Parent's Engineers' Report" shall have the meaning ascribed to
"Company's Engineers' Report" in the U.S. Credit Agreement (without amendment
except as permitted pursuant to the Intercreditor Agreement).

       "Parent Guaranty" means that certain Guaranty, dated as of October 31,
1996, by the Parent in favor of the Canadian Lenders and the other Lender
Parties (as defined therein), as such Parent Guaranty may from time to time be
amended, supplemented, restated, reaffirmed or otherwise modified.

       "Participant" is defined in Section 17.2(a).

       "Payment Date" means the second day of January and the first day of each
April, July and October of each calendar year, commencing January 2, 1997.

       "Person" means any corporation, limited liability company, natural
person, firm, joint venture, partnership, trust, unincorporated organization,
enterprise, government or any department or agency of any government.

       "Projections" means the Parent's Operations and Financial Summary Data
consisting of the Company Case dated April 19, 1996 and the Liquidating Case
dated April 19, 1996.

       "Properties" shall have the meaning ascribed to such term in the U.S.
Credit Agreement (without amendment except as permitted pursuant to the
Intercreditor Agreement).

       "Purchaser" is defined in Section 17.3(a).

       "Qualified Long Term Rating" means in respect of any Person, a Person
which has publicly traded debt securities rated either A- or higher by S&P or
A(3) or higher by Moody's.

       "Rate Option" means the Eurodollar Rate or the Alternate Base Rate.

       "Rating Level" shall have the meaning ascribed to such term in the U.S.
Credit Agreement (without amendment except as permitted pursuant to the
Intercreditor Agreement).

       "Reference Lenders" means First Chicago and Chase.

       "Regulation U" means any of Regulations G, T, U or X of the Board of
Governors of the Federal Reserve System from time to time in effect and shall
include any successor or other regulations or official interpretations of said
Board of Governors or any successor Person relating to the extension of credit
for the purpose of purchasing or carrying margin stocks applicable to member
banks of the Federal Reserve System or any successor Person.

       "Release" means a "release," as such term is defined in CERCLA.

       "Replacement Lender" is defined in Section 2.2.

       "Required Lenders" means, as of any date of determination, Canadian
Lenders having in the aggregate at least 66-2/3% of the Aggregate Commitment
or, if the Aggregate Commitment has been terminated, Canadian Lenders holding
at least 66-2/3% of the then outstanding principal amount of the Loans.

       "Reserve Requirement" means, with respect to an Interest Period, the
maximum aggregate reserve requirement (including all basic, emergency,
supplemental, marginal and other reserves and taking into account any
transitional adjustments or regulations issued from time to time) which is then
applicable to assets or liabilities consisting of and including with a maturity
equal to that of the eurocurrency liabilities having a term approximately equal
or comparable to such Interest Period.





                                       12
<PAGE>   19
       "Revolving Advance" means a borrowing hereunder consisting of the
aggregate amount of the several Loans made by the Canadian Lenders or any of
them to the Company on the same Borrowing Date, at the same Rate Option and, in
the case of Eurodollar Loans, for the same Interest Period.

       "S&P" means Standard & Poor's Ratings Service and any successor thereto
that is a nationally-recognized rating agency.

       "Sale" means any sale, transfer, assignment, lease, conveyance,
exchange, swap or other disposition.

       "Schedules" means Schedules A, 8.8, 11.1 and 11.10 hereto.

       "Solvent" means, with respect to any Person at any time, a condition
under which

              (a)    the fair saleable value of such Person's assets is, on the
       date of determination, greater than the total amount of such Person's
       liabilities (including contingent and unliquidated liabilities) at such
       time;

              (b)    such Person is able to pay all of its liabilities as such
       liabilities mature; and

              (c)    such Person does not have unreasonably small capital with
       which to conduct its business.

For purposes of this definition (i) the amount of a Person's contingent or
unliquidated liabilities at any time shall be that amount which, in light of
all the facts and circumstances then existing, represents the amount which can
reasonably be expected to become an actual or matured liability; (ii) the "fair
saleable value" of an asset shall be the amount which may be realized within a
reasonable time either through collection or sale of such asset at its regular
market value; and (iii) the "regular market value" of an asset shall be the
amount which a capable and diligent business person could obtain for such asset
from an interested buyer who is willing to purchase such asset under ordinary
selling conditions.

       "Spot Rate of Exchange" means, on any date, the rate of exchange between
two currencies which is quoted on the Reuters' Screen page BOFC at or about
1:00 p.m. (Toronto time) on that day.

       "Subsidiary" means, with respect to any Person, any other Person more
than 50% of the outstanding voting securities of which shall at the time be
owned or controlled, directly or indirectly, by such Person; provided, that
with respect to the Company, Subsidiaries shall include any Person more than
50% of the outstanding voting securities of which shall at the time be owned or
controlled, directly or indirectly, by the Company or by one or more
Subsidiaries or by the Company and one or more Subsidiaries.

       "Termination Date" means the Original Termination Date, or such other
later date as may result from any extension requested by the Company and
consented to by the Canadian Lenders pursuant to Section 2.2.

       "Transferee" is defined in Section 17.4.

       "United States" or "U.S." means the United States of America, its fifty
states and the District of Columbia.

       "Unmatured Default" means an event which but for the lapse of time or
the giving of notice, or both, would constitute a Default.

       "U.S. Base Rate" means a rate per annum of interest from time to time
announced by the Canadian Administrative Agent as the reference rate used by it
for determining interest rates charged on U.S. Dollar commercial loans made in
Canada.





                                       13
<PAGE>   20
       "U.S. Commitments" has the meaning of the term "Aggregate Commitment" as
defined in the U.S. Credit Agreement.

       "U.S. Credit Agreement" means that certain Fourth Amended and Restated
Credit Agreement of even date herewith among the Parent, the U.S. Lenders, The
First National Bank of Chicago, as Global Administrative Agent, the Chase
Manhattan Bank, as Co-Agent, First Chicago Capital Markets, Inc., as Arranger,
and Chase Securities Inc., as Arranger, as it may be amended, supplemented,
restated or otherwise modified from time to time.

       "U.S. Lenders" means the financial institutions listed on the signature
pages of the U.S. Credit Agreement and their respective successors and assigns.

       "U.S. Loan Documents" means the U.S. Credit Agreement, any notes, any
guaranties, any assignment agreements, the agreement with respect to fees, the
Intercreditor Agreement and the Indemnity Agreements, together with all
exhibits, schedules and attachments thereto, and all other agreements,
documents, certificates, financing statements and instruments from time to time
executed and delivered pursuant to or in connection with any of the foregoing.

       1.2.   Use of Defined Terms.  Unless otherwise defined or the context
otherwise requires, terms for which meanings are provided in this Agreement
shall have such meanings when used in each Schedule and Exhibit hereto and in
each Note, Borrowing Notice, Continuation/Conversion Notice, Canadian Loan
Document, notice and other communication delivered from time to time in
connection with this Agreement or any other Canadian Loan Document.

       1.3.   Cross References.  Unless otherwise specified, references in this
Agreement and in each other Canadian Loan Document to any Article, Section,
Exhibit or Schedule are references to such Article or Section of or Schedule or
Exhibit to this Agreement or such other Canadian Loan Document, as the case may
be, and, unless otherwise specified, references in any Article, Section or
definition to any clause are references to such clause of such Article, Section
or definition.

       1.4.   Accounting and Financial Determination.  Unless otherwise
specified, all accounting terms used herein or in any other Canadian Loan
Document shall be interpreted, all accounting determinations and computations
hereunder or thereunder, and all financial statements required to be delivered
hereunder or thereunder, shall be prepared in accordance with, the Agreement
Accounting Principles.

       1.5.   Currency References.  Unless otherwise specified herein, all
dollar amounts expressed herein shall refer to U.S. Dollars.  Except as
otherwise herein specified, for purposes of calculating compliance with the
terms of this Agreement and the other Canadian Loan Documents (including for
purposes of calculating compliance with the covenants), any other obligation or
calculation shall be converted to its Equivalent Amount in U.S. Dollars.


                                   ARTICLE II

                                  THE FACILITY

       2.1.   The Facility.

       (a)    Description of Facility.  On the terms and subject to the
conditions set forth in this Agreement (including satisfaction of the
conditions precedent set forth in Article VII), the Canadian Lenders grant to
the Company a revolving credit facility pursuant to which, and upon the terms
and conditions herein set out, each Canadian Lender severally agrees to make
Loans to the Company in accordance with this Section and Article III.





                                       14
<PAGE>   21
       (b)    Facility Amount.  In no event may the aggregate principal amount
of all outstanding Loans exceed the lesser of the Aggregate Commitment or the
Global Borrowing Base and no Canadian Lender shall be obligated to make any
Loan hereunder if, after giving effect to such Loan, the sum of the aggregate
outstanding principal amount of all Borrowing Base Debt would exceed the Global
Borrowing Base; provided that if the Company shall have requested an Advance
the proceeds of which will be used to repay outstanding Borrowing Base Debt and
so long as no Default or Unmatured Default shall have occurred and be
continuing, then, with respect to the calculations set forth in this
subsection, such Advance shall not be included within the amount of outstanding
Loans and outstanding Borrowing Base Debt until 5:00 p.m. (Central time) on the
day of such Advance; provided, further, that the continuation of any Floating
Rate Loan or any Eurodollar Loan or the conversion of any Eurodollar Loan into
a Floating Rate Loan shall not be deemed to be a borrowing of a Loan for
purposes of this subsection or an Advance during the applicable period provided
in Section 4.1(a) for the Company to make a mandatory payments because of a
Debt Limit Excession; provided, further, that, in the case of a continuation of
a Eurodollar Loan during a continuing Debt Limit Excession, such continuation
shall only be permitted for a period ending on or prior to the date by which
the Company is required to make a mandatory prepayment because of a Debt Limit
Excession provided in Section 4.1(a).

       (c)    All Loans.  Subject to the terms and conditions of this
Agreement, the Company may borrow, repay and reborrow all Loans made under this
Agreement in U.S. Dollars at any time prior to the Termination Date.  The
obligations of the Canadian Lenders to make Loans shall cease on the
Termination Date, and any and all Loans outstanding on such date shall be due
and payable on such date.

       (d)    Revolving Advances.  Each Revolving Advance hereunder shall
consist of borrowings made from the several Canadian Lenders ratably in
proportion to the amounts of their respective Commitments.

       2.2.   Extension of Termination Date and of Aggregate Commitment.

       (a)    Subject to the other provisions of this Agreement, the Aggregate
Commitment shall be effective for an initial period from the Global Effective
Date to the Original Termination Date; provided that the Termination Date, and
concomitantly the Aggregate Commitment, may be extended for successive one year
periods expiring on the date which is one (1) year from the then scheduled
Termination Date.  If the Company shall request in an Annual Certificate of
Extension delivered to the Global Administrative Agent and the Canadian
Administrative Agent concurrently with delivery by the Parent under the U.S.
Credit Agreement of the Approved Engineers' Report delivered prior to the then
scheduled Termination Date that the Termination Date be extended for one year
from the then scheduled Termination Date, then the Canadian Administrative
Agent shall promptly notify each Canadian Lender of such request and each
Canadian Lender shall notify the Canadian Administrative Agent, no later than
the next date by which each Canadian Lender is required, pursuant to Section
2.3(a) of the U.S. Credit Agreement, to approve or disapprove the Engineering
Banks' determination of the Global Borrowing Base, and whether such Canadian
Lender, in the exercise of its sole discretion, will extend the Termination
Date for such one year period.  Any Canadian Lender which shall not timely
notify the Canadian Administrative Agent whether it will extend the Termination
Date shall be deemed to not have agreed to extend the Termination Date.  No
Canadian Lender shall have any obligation whatsoever to agree to extend the
Termination Date.  Any agreement to extend the Termination Date by any Canadian
Lender shall be irrevocable, except as provided in Section 2.2(c).

       (b)    If all the Canadian Lenders notify the Canadian Administrative
Agent pursuant to clause (a) of this Section 2.2 of their agreement to extend
the Termination Date, then the Canadian Administrative Agent shall so notify
the Global Administrative Agent, each Canadian Lender and the Company, and such
extension shall be effective without other or further action by any party
hereto for such additional one year period.

       (c)    If Canadian Lenders constituting at least the Required Lenders
approve the extension of the then scheduled Termination Date (such Canadian
Lenders agreeing to extend the Termination Date herein called the "Accepting
Lenders"), and if one or more of the Canadian Lenders shall notify, or be
deemed to notify, the Canadian Administrative Agent pursuant to clause (a) of
this Section 2.2 that they will not extend the then scheduled





                                       15
<PAGE>   22
Termination Date (such Canadian Lenders herein called the "Declining Lenders"),
then (A) the Canadian Administrative Agent shall promptly so notify the Company
and the Accepting Lenders, (B) the Accepting Lenders shall, upon the Company's
election to extend the then scheduled Termination Date in accordance with
clause (i) or (ii) below, extend the then scheduled Termination Date and (C)
the Company shall pursuant to a notice delivered to the Global Administrative
Agent, the Canadian Administrative Agent, the Accepting Lenders and the
Declining Lenders, no later than the tenth day following the date by which each
Canadian Lender is required, pursuant to Section 2.2(a), to approve or
disapprove the requested extension of the Aggregate Commitment, either:

              (i)    elect to extend the Termination Date with respect to the
       Accepting Lenders and direct the Declining Lenders to terminate their
       Commitments, which termination shall become effective on the date which
       would have been the Termination Date except for the operation of this
       Section 2.2.  On such date, (x) the Company shall deliver a notice of
       the effectiveness of such termination to the Declining Lenders with a
       copy to the Global Administrative Agent and the Canadian Administrative
       Agent and (y) the Company shall pay in full in immediately available
       funds all Obligations of the Company owing to the Declining Lenders and
       (z) upon the occurrence of the events set forth in clauses (x) and (y),
       the Declining Lenders shall each cease to be a Canadian Lender hereunder
       for all purposes, other than for purposes of Article VI, Section 14.7
       and the Indemnity Agreement, and shall cease to have any obligations or
       any Commitment hereunder, other than to the Agents pursuant to Section
       15.8, and the Canadian Administrative Agent shall promptly notify the
       Accepting Lenders, the Global Administrative Agent and the Company of
       the new Aggregate Commitment; or

              (ii)   elect to extend the Termination Date with respect to the
       Accepting Lenders and, prior to or no later than the then scheduled
       Termination Date, (A) to replace one or more of the Declining Lender or
       Declining Lenders with another lender or lenders reasonably acceptable
       to the Canadian Administrative Agent and the Global Administrative Agent
       (such lenders herein called the "Replacement Lenders") and (B) the
       Company shall pay in full in immediately available funds all Obligations
       of the Company owing to the Declining Lenders which are not being
       replaced, as provided in clause (i) above; provided that (x) the
       Replacement Lender or Replacement Lenders shall purchase, and the
       Declining Lender or Declining Lenders shall sell, the Notes of the
       Declining Lender or Declining Lenders being replaced and the Declining
       Lender's or Declining Lenders' rights hereunder without recourse or
       expense to, or warranty by, such Declining Lender or Declining Lenders
       being replaced for a purchase price equal to the aggregate outstanding
       principal amount of the Note or Notes payable to such Declining Lender
       or Declining Lenders plus any accrued but unpaid interest on such Note
       or Notes and accrued but unpaid fees in respect of such Declining
       Lender's or Declining Lenders' Loans and Commitments hereunder, and (y)
       all obligations of the Company owing under or in connection with this
       Agreement to the Declining Lender or Declining Lenders being replaced
       (other than with respect to the Notes, but including, without
       limitation, such increased costs, breakage fees payable under Section
       6.3 and all other costs and expenses payable to each such Declining
       Lender) shall be paid in full in immediately available funds to such
       Declining Lender or Declining Lenders concurrently with such
       replacement, and (z) upon the payment of such amounts referred to in
       clauses (x) and (y), the Replacement Lender or Replacement Lenders shall
       each constitute a Canadian Lender hereunder and the Declining Lender or
       Declining Lenders being so replaced shall no longer constitute a
       Canadian Lender (other than for purposes of Article VI, Section 14.7 and
       the Indemnity Agreement), and shall no longer have any obligations
       hereunder, other than to the Agents pursuant to Section 15.8; or

              (iii)  elect to revoke and cancel the extension request in such
       Annual Certificate of Extension by giving notice of such revocation and
       cancellation to the Global Administrative Agent and the Canadian
       Administrative Agent (which shall promptly notify the Canadian Lenders
       thereof) no later than the tenth day following the date by which each
       Canadian Lender is required, pursuant to Section 2.2(a), to approve or
       disapprove the requested extension of the Termination Date, and
       concomitantly the Aggregate Commitment.





                                       16
<PAGE>   23
       If the Company fails to timely provide the election notice referred to
in this clause(c), the Company shall be deemed to have revoked and cancelled
the extension request in the Annual Certificate of Extension and to have
elected not to extend the Termination Date, and the concomitant Aggregate
Commitment, with respect to the Accepting Lenders, and, on the then scheduled
Termination Date, the Company shall repay in full all Obligations under the
Canadian Loan Documents.

       2.3.   [Intentionally Omitted.].

       2.4.   Facility Fee; Other Fees.

       (a)    Facility Fee.  The Company agrees to pay to the Canadian
Administrative Agent for the account of each Canadian Lender a facility fee for
the period from (and including) the date hereof to the Termination Date, at the
applicable rates per annum set forth in Schedule A based on the applicable
Rating Level on such Canadian Lender's ratable portion of the Aggregate
Commitment as in effect from time to time.

Facility fees accruing pursuant to this Section 2.4(a) shall be payable in
arrears on each Payment Date hereafter and on the Termination Date.  The
effective date for any change in the Facility Fees accruing pursuant to this
Section 2.4(a) shall be any date on which a change in the applicable Rating
Level occurs.

       (b)    Agents' Fees.  The Company shall pay to each Agent for its own
respective account such fees in connection with this Agreement as previously
have been agreed in writings between the Company and any such Agent (as such
writings may hereafter be amended, supplemented, restated or otherwise modified
and in effect).


                                  ARTICLE III

                    BORROWING; SELECTING RATE OPTIONS; ETC.

       3.1.   Method of Borrowing.  Not later than 3:00 p.m. (Toronto time) on
each Borrowing Date for Loans, each Canadian Lender shall make available its
Loan or Loans, in funds immediately available in Toronto, to the Canadian
Administrative Agent at its address specified pursuant to Article XVIII.  The
Canadian Administrative Agent will make the funds so received from the Canadian
Lenders with respect to Loans available to the Company at the Canadian
Administrative Agent's aforesaid address.

       3.2.   Maximum Interest.  It is the intention of the parties hereto to
conform strictly to applicable interest, usury and criminal laws and, anything
herein to the contrary notwithstanding, the obligations of the Company to a
Canadian Lender or any Agent under this Agreement shall be subject to the
limitation that payments of interest shall not be required to the extent that
receipt thereof would be contrary to provisions of law applicable to such
Canadian Lender or Agent limiting rates of interest which may be charged or
collected by such Canadian Lender or Agent.  Accordingly, if the transactions
contemplated hereby would be illegal, unenforceable, usurious or criminal under
laws applicable to a Canadian Lender or Agent (including the laws of any
jurisdiction whose laws may be mandatorily applicable to such Canadian Lender
or Agent notwithstanding anything to the contrary in this Agreement or any
other Canadian Loan Document but subject to Section 3.8 hereof) then, in that
event, notwithstanding anything to the contrary in this Agreement or any other
Canadian Loan Document, it is agreed as follows:

              (a)    the provisions of this Section 3.2 shall govern and
       control;

              (b)    the aggregate of all consideration which constitutes
       interest under applicable law that is contracted for, taken, reserved,
       charged or received under this Agreement, or under any of the other
       aforesaid agreements or otherwise in connection with this Agreement by
       such Canadian Lender or Agent shall under no circumstances exceed the
       maximum amount of interest allowed by applicable law (such





                                       17
<PAGE>   24
       maximum lawful interest rate, if any, with respect to each Canadian
       Lender and the Agent herein called the "Highest Lawful Rate"), and any
       excess shall be cancelled automatically and if theretofore paid shall be
       credited to the Company by such Canadian Lender or Agent (or, if such
       consideration shall have been paid in full, such excess refunded to the
       Company);

              (c)    all sums paid, or agreed to be paid, to such Canadian
       Lender or Agent for the use, forbearance and detention of the
       indebtedness of the Company to such Canadian Lender or Agent hereunder
       or under any Canadian Loan Document shall, to the extent permitted by
       laws applicable to such Canadian Lender or Agent, as the case may be, be
       amortized, prorated, allocated and spread throughout the full term of
       such indebtedness until payment in full so that the actual rate of
       interest is uniform throughout the full term thereof;

              (d)    if at any time the interest provided pursuant to this
       Section 3.2 or any other clause of this Agreement or any other Canadian
       Loan Document, together with any other fees or compensation payable
       pursuant to this Agreement or any other Canadian Loan Document and
       deemed interest under laws applicable to such Canadian Lender or Agent,
       exceeds that amount which would have accrued at the Highest Lawful Rate,
       the amount of interest and any such fees or compensation to accrue to
       such Canadian Lender or Agent pursuant to this Agreement shall be
       limited, notwithstanding anything to the contrary in this Agreement or
       any other Canadian Loan Document, to that amount which would have
       accrued at the Highest Lawful Rate, but any subsequent reductions, as
       applicable, shall not reduce the interest to accrue to such Canadian
       Lender or Agent pursuant to this Agreement below the Highest Lawful Rate
       until the total amount of interest accrued pursuant to this Agreement or
       such other Canadian Loan Document, as the case may be, and such fees or
       compensation deemed to be interest equals the amount of interest which
       would have accrued to such Canadian Lender or Agent if a varying rate
       per annum equal to the interest provided pursuant to any other relevant
       Section hereof (other than this Section 3.2), as applicable, had at all
       times been in effect, plus the amount of fees which would have been
       received but for the effect of this Section 3.2; and

              (e)    with the intent that the rate of interest herein shall at
       all times be lawful, and if the receipt of any funds owing hereunder or
       under any other agreement related hereto (including any of the other
       Canadian Loan Documents) by such Canadian Lender or Agent would cause
       such Canadian Lender to charge the Company a criminal rate of interest,
       the Canadian Lenders and the Agents agree that they will not require the
       payment or receipt thereof or a portion thereof which would cause a
       criminal rate of interest to be charged by such Canadian Lender or
       Agent, as applicable, and if received such affected Canadian Lender or
       Agent will return such funds to the Company so that the rate of interest
       paid by the Company shall not exceed a criminal rate of interest from
       the date this Agreement was entered into.

       3.3.   Method of Selecting Rate Options and Interest Periods for Loans.
The Company shall select the Rate Option and Interest Period applicable to each
Revolving Advance from time to time.  The Company shall give the Canadian
Administrative Agent irrevocable notice (a "Borrowing Notice") not later than
(a) noon (Toronto time) on the Borrowing Date of each Floating Rate Advance,
and (b) 1:00 p.m. (Toronto time) at least three (3) Business Days before the
Borrowing Date for each Eurodollar Advance, specifying:

              (i)    that the Borrowing Notice is delivered under this
       Agreement,

              (ii)   the Borrowing Date, which shall be a Business Day, of such
       Revolving Advance,

              (iii)  the aggregate amount of such Revolving Advance,

              (iv)   the Rate Option selected for such Revolving Advance, and

              (v)    in the case of each Eurodollar Advance, the Interest
       Period applicable thereto.





                                       18
<PAGE>   25
Each Eurodollar Advance shall bear interest from and including the first day of
the Interest Period applicable thereto to (but not including) the last day of
such Interest Period at the interest rate determined from time to time as
applicable to such Eurodollar Advance.  The Company shall select Interest
Periods with respect to Eurodollar Advances so that it is not necessary to pay
a Eurodollar Advance prior to the last day of the applicable Interest Period in
order to make the mandatory repayment on the Termination Date.

       3.4.   [Intentionally Omitted].

       3.5.   Minimum Amount of Each Advance.  Each requested Advance shall be
in the minimum amount of $5,000,000 (and in multiples of $1,000,000 if in
excess thereof); provided, however, that any Floating Rate Advance may be in
the amount of the difference between (i) the Global Borrowing Base minus (ii)
the aggregate principal amount of Borrowing Base Debt.

       3.6.   Continuation and Conversion Elections.  By providing a
Continuation/Conversion Notice to the Canadian Administrative Agent on or
before 1:00 p.m. (Toronto time), in the case of a Eurodollar Loan, or noon
(Toronto time), in the case of a Floating Rate Loan, on a Business Day, the
Company may from time to time irrevocably elect, on, in the case of a
Eurodollar Loan, not less than three nor more than five, and in the case of a
Floating Rate Loan not less than one or more than three, Business Days' notice,
that all, or any portion in an aggregate minimum amount of $5,000,000 and an
integral multiple of $1,000,000 or the remaining balance of any Loans be, in
the case of Floating Rate Loans converted into Eurodollar Loans or, in the case
of Eurodollar Loans converted into Floating Rate Loans or continued as
Eurodollar Loans (in the absence of delivery of a Continuation/Conversion
Notice with respect to any Eurodollar Loan at least three Business Days before
the last day of the then current Interest Period with respect thereto, such
Eurodollar Loan shall, on such last day, automatically convert to a Floating
Rate Loan); provided, however, that no portion of the outstanding principal
amount of any Loans may be continued as, or be converted into, a Eurodollar
Advance when any Default has occurred and is continuing.

       3.7.   Telephonic Notices.  The Company hereby authorizes the Canadian
Lenders and the Canadian Administrative Agent to extend Advances, and effect
Rate Option selections based on telephonic notices made by any Person or
Persons the Canadian Administrative Agent or any Canadian Lender in good faith
believes to be acting on behalf of the Company.  The Company agrees to deliver
promptly to the Canadian Administrative Agent a written confirmation of each
telephonic notice signed by an Authorized Officer.  If the written confirmation
differs in any material respect from the action taken by the Canadian
Administrative Agent and the Canadian Lenders, the records of the Canadian
Administrative Agent and the Canadian Lenders shall govern absent manifest
error.

       3.8.   Rate after Maturity.  Except as provided in the next sentence,
any Advance not paid at maturity, whether by acceleration or otherwise, shall
bear interest until paid in full at a rate per annum equal to the Alternate
Base Rate plus 2%.  In the case of a Eurodollar Advance the maturity of which
is accelerated, such Eurodollar Advance shall bear interest for the remainder
of the applicable Interest Period, at the higher of (i) the rate (including the
Eurodollar Spread) otherwise applicable to such Interest Period plus 2% per
annum or (ii) the Alternate Base Rate plus 2% per annum.

       3.9.   Interest Payment Dates; Determination of Interest and Fees.

       (a)    Interest Payment Dates.  Interest accrued and unpaid on each
Floating Rate Advance shall be payable on each Payment Date and on any date on
which such Floating Rate Advance is paid or prepaid, whether due to
acceleration or otherwise.  Interest accrued on each Eurodollar Advance shall
be payable on the last day of its applicable Interest Period and on any date on
which such Eurodollar Advance is prepaid, whether due to acceleration or
otherwise.  Interest accrued on each Eurodollar Advance having an Interest
Period longer than three (3) months shall also be payable on the last day of
each three-month interval during such Interest Period.

       (b)    Determination of Interest and Fees.  Interest on any Advance or
portion thereof bearing interest at the Alternate Base Rate and facility fees
shall be calculated for actual days elapsed on the basis of a 365- or, if
applicable,





                                       19
<PAGE>   26
366-day year, and all other interest and fees shall be calculated for actual
days elapsed on the basis of a 360-day year.  Any change in the Eurodollar
Spread attributable to a change in the Debt/Capitalization Ratio, if any, shall
be effective on the forty-fifth (45th) day following the end of the calendar
quarter in which occurred a change in Debt/Capitalization Ratio.  Any change in
the Eurodollar Spread attributable to a change in the Company's applicable
Rating Level, if any, shall be effective on the same day as such change in the
Company's applicable Rating Level.

       (c)    Interest Act Waiver.  To the extent permitted by applicable law,
any provision of the Interest Act (Canada) or the Judgment Interest Act
(Alberta) which restricts any rate of interest set forth herein shall be
inapplicable to this Agreement and is hereby waived by the Company.

       (d)    Nominal Rate.  The theory of deemed reinvestment shall not apply
to the calculation of interest or payment of fees or other amounts hereunder,
notwithstanding anything contained in this Agreement, in any Note, acceptance
or other evidence of indebtedness or in any other Canadian Loan Document now or
hereafter taken by any Agent or any Canadian Lender for the obligations of the
Company under this Agreement, or any other instrument referred to herein, and
all interest and fees payable by the Company to the Canadian Lenders, shall
accrue from day to day, computed as described herein in accordance with the
"nominal rate" method of interest calculation.

       (e)    Interest Act.  Where, in this Agreement, a rate of interest or
fees is to be calculated on the basis of a 360-day year, such rate is, for the
purpose of the Interest Act (Canada), equivalent to the said rate (i)
multiplied by the actual number of days in the one year period beginning on the
first day of the period of calculation and (ii) divided by 360.

       3.10.  Notification of Advances, Interest Rates, Prepayments and
Commitment Reductions.  Promptly after receipt thereof, the Canadian
Administrative Agent will notify each Canadian Lender of the contents of each
commitment reduction notice (pursuant to Section 4.5), Borrowing Notice,
Continuation/Conversion Notice, and repayment notice received by it hereunder.
The Canadian Administrative Agent will notify each Canadian Lender of the
Eurodollar Rate applicable to each Eurodollar Advance promptly upon
determination of such Eurodollar Rate and will give each Canadian Lender prompt
notice of each change in the Alternate Base Rate.  The Global Administrative
Agent agrees to furnish timely information for the purpose of determining the
Eurodollar Rate.

       3.11.  Non-Receipt of Funds by the Canadian Administrative Agent.
Unless the Company or a Canadian Lender, as the case may be, notifies the
Canadian Administrative Agent prior to the date on which it is scheduled to
make payment to the Canadian Administrative Agent of (i) in the case of a
Canadian Lender, the proceeds of a Loan or (ii) in the case of the Company, a
payment of principal, interest, fees or other amounts to the Canadian
Administrative Agent for the account of the Canadian Lenders or any Agent, that
it does not intend to make such payment, the Canadian Administrative Agent may
assume that such payment has been made.  The Canadian Administrative Agent may,
but shall not be obligated to, make the amount of such payment available to the
intended recipient in reliance upon such assumption.  If such Canadian Lender
or the Company, as the case may be, has not in fact made such payment to the
Canadian Administrative Agent, the recipient of such payment shall, on demand
by the Canadian Administrative Agent, repay to the Canadian Administrative
Agent the amount so made available together with interest thereon in respect of
each day during the period commencing on the date such amount was so made
available by the Canadian Administrative Agent until the date the Canadian
Administrative Agent recovers such amount at a rate per annum equal to (i) in
the case of payment by a Canadian Lender, the Federal Funds Effective Rate for
such day or (ii) in the case of payment by the Company, the interest rate
applicable to the relevant Loan or, in the case of payments in respect of
interest, fees or other amounts, at a rate equal to the Alternate Base Rate.


                                   ARTICLE IV

              MANDATORY PAYMENTS; REDUCTIONS OF COMMITMENTS; ETC.

       4.1.   Mandatory Prepayments.





                                       20
<PAGE>   27
       (a)    Mandatory Prepayments.  To the extent that other payments have
not been made to remedy the conditions described below, the Company shall:

       (i)    if a Debt Limit Excession has occurred and is continuing, within
              120 days, unless otherwise provided below, and prior to any
              payment (other than any scheduled payment) of any other Borrowing
              Base Debt make a mandatory prepayment on the Loans in an amount
              equal to the amount necessary to eliminate any such Debt Limit
              Excession together with all interest accrued on the amount of
              such prepayment to the date thereof;

       (ii)   in the event of the issuance, assumption or creation of Borrowing
              Base Debt on any day which would cause a Debt Limit Excession
              effective as of 5:00 p.m. (Central time) on such day,
              immediately, and in any event before 5:00 p.m. (Central time), on
              such day make a mandatory prepayment on the Loans in an amount
              equal to the lesser of (x) the amount which would be necessary to
              eliminate such a Debt Limit Excession or (y) the aggregate
              principal amount of such Borrowing Base Debt issued, assumed or
              created on such day; and

       (iii)  upon the consummation of any Sale of any Property or any
              Borrowing Base Subsidiary of the Parent constituting (and
              designated by the Parent in a notice to the Global Administrative
              Agent as constituting) a permitted Sale under clause (iii) or
              (iv) of Section 11.3 of the U.S. Credit Agreement which results
              in a Debt Limit Excession, promptly, and in any event within
              three (3) Business Days thereof, make a mandatory prepayment on
              the Loans in the amount necessary to eliminate such Debt Limit
              Excession.

Notwithstanding that the Company shall have the period in which to make any
mandatory prepayment specified in this Section 4.1(a), (i) the Company shall
not be entitled to borrow Loans during such period except as provided under
Section 2.1(b) and (ii) the Company shall make all other prepayments and
payments required under or in connection with this Agreement; provided, that
for purposes of the foregoing provisions of this sentence the continuation of
any Floating Rate Loan or any Eurodollar Loan or the conversion of an
outstanding Eurodollar Loan into a Floating Rate Loan during such period shall
be deemed not to be the borrowing of a Loan; provided, however, that in the
case of a continuation of a Eurodollar Loan during a continuing Debt Limit
Excession, such continuation shall only be permitted for a period ending on or
prior to the date provided in this Section by which the Company is required to
make a mandatory prepayment because of a Debt Limit Excession.

       (b)    Application of Mandatory Prepayments.  Each mandatory prepayment
made under this Section 4.1 shall be applied (i) first, ratably among the
Canadian Lenders with respect to any principal and interest due in connection
with Loans and (ii) second, after all amounts described in clause (i) have been
satisfied, ratably to any other Obligations then due.

       4.2.   Voluntary Prepayments.  The Company may from time to time, at its
option, prepay outstanding Advances, upon three (3) Business Days' prior notice
to the Canadian Administrative Agent in the case of a Eurodollar Advance, or
upon one (1) Business Day's prior notice to the Canadian Administrative Agent
in the case of a Floating Rate Advance; provided that each such prepayment
shall be in a minimum aggregate amount of $5,000,000 or any integral multiple
of $1,000,000 in excess thereof without penalty or premium, except that if such
prepayment of a Eurodollar Loan occurs prior to a last day of any applicable
Interest Period, the Company shall also pay the amount specified in Section 6.3
at the time of such prepayment.  Such prepayments shall be applied, at the
Company's option, against outstanding Loans and against installments or amounts
due on account thereof in such order of application as the Company shall
direct; provided, that if the Company fails to direct an order of application
at or prior to the time of such notice of prepayment, then such prepayments
shall be applied (i) first, ratably among the Canadian Lenders with respect to
any principal and interest due in connection with Loans and (ii) second, after
all amounts described in clause (i) have been satisfied, ratably to any other
Obligations then due; provided, further, that if, at the time of any such
prepayment, any Default shall have occurred and shall be continuing, then the
holders of the Obligations shall share such prepayment on a pro rata basis,
based on the respective amount of Obligations owing to each such holder
(whether or not matured and





                                       21
<PAGE>   28
currently payable and whether consisting of principal, accrued interest, fees,
expenses, indemnities or other types of Obligations) as of the date of
occurrence of such Default.

       4.3.   Method of Payment.  All payments of principal, interest, and fees
hereunder shall be made by 1:00 p.m. (Toronto time) on the date when due in
immediately available funds to the Canadian Administrative Agent at the
Canadian Administrative Agent's address specified pursuant to Article XVIII, or
at any other single Lending Installation of the Canadian Administrative Agent
specified not less than five (5) days prior to the date when due in writing by
the Canadian Administrative Agent to the Company and shall be applied (i)
first, ratably among the Canadian Lenders with respect to any principal and
interest due in connection with Loans and (ii) second, after all amounts
described in clause (i) have been satisfied, ratably to any other Obligations
then due; provided, however, that, if, at the time of any such payment, any
Default shall have occurred and shall be continuing, then the holders of the
Obligations shall share such payment on a pro rata basis, based on the
respective amount of Obligations owing to each such holder (whether or not
matured and currently payable and whether consisting of principal, accrued
interest, fees, expenses, indemnities or other types of Obligations) as of the
date of occurrence of such Default.  As between the Company and any Canadian
Lender, the timely receipt of any payment by the Canadian Administrative Agent
from the Company for the account of such Canadian Lender shall constitute
receipt by such Canadian Lender.  Each payment delivered to the Canadian
Administrative Agent for the account of any Canadian Lender shall be delivered
promptly by the Canadian Administrative Agent to such Canadian Lender in the
same type of funds which the Canadian Administrative Agent received at its
address specified pursuant to Article XVIII or at any Lending Installation
specified in a notice received by the Canadian Administrative Agent from such
Canadian Lender.  Each of the Company and the Canadian Administrative Agent
shall be deemed to have complied with this Section 4.3 with respect to any
payment if it shall have initiated a wire transfer to the appropriate recipient
thereof and furnished such recipient with the identifying number of such wire
transfer.

       4.4.   Notes.  Each Canadian Lender is hereby authorized to record the
principal amount of each of its Loans and each repayment thereof, on the
schedule attached to each of its Notes, provided, however, that the failure to
so record shall not affect the Company's obligations under any such Note.

       4.5.   Voluntary Reductions of Commitments.  The Company may permanently
reduce the Aggregate Commitment in whole, or in part, ratably among the
Canadian Lenders, in a minimum aggregate amount of $5,000,000 or any integral
multiple of $1,000,000 in excess thereof; provided, however, that the amount of
the Aggregate Commitment may not be reduced to an amount which would cause it
to be less than the outstanding principal amount of the Loans.  All accrued
facility fees shall be payable on the effective date of any such reduction or
termination of the Aggregate Commitment.

       4.6.   Voluntary and Mandatory Prepayments.  Any prepayments of
principal of the Loans, whether voluntary or mandatory, shall include accrued
interest to, but not including, the date of the prepayment on the principal
amount being prepaid.

                                   ARTICLE V

                            [Intentionally Omitted].


                                   ARTICLE VI

                         CHANGE IN CIRCUMSTANCES; TAXES

       6.1.   Yield Protection.  If any law or any governmental or quasi-
governmental rule, regulation, policy, guideline or directive (whether or not
having the force of law), or any reasonable interpretation thereof, or
compliance of any Canadian Lender with such,





                                       22
<PAGE>   29
              (a)    imposes or increases or deems applicable any reserve,
       assessment, insurance charge, special deposit or similar requirement
       against assets of, deposits with or for the account of, or credit
       extended by, any Canadian Lender or any applicable Lending Installation
       (other than reserves and assessments taken into account in determining
       the interest rate applicable to Eurodollar Advances), or

              (b)    imposes any other condition the result of which is to
       increase the cost to any Canadian Lender or any applicable Lending
       Installation of making, funding or maintaining Loans or reduces any
       amount receivable by any Canadian Lender or any applicable Lending
       Installation in connection with Loans, or requires any Canadian Lender
       or any applicable Lending Installation to make any payment calculated by
       reference to the amount of Loans held or interest received, by an amount
       reasonably deemed material by such Canadian Lender,

then, within 15 days of demand by such Canadian Lender, the Company shall pay
such Canadian Lender that portion of such increased expense incurred or
reduction in an amount received which such Canadian Lender reasonably
determines is attributable to making, funding and maintaining its Loans and its
Commitment.

       6.2.   Availability of Rate Options.  If any Canadian Lender determines
that maintenance of its Eurodollar Loans at a suitable Lending Installation
would violate any applicable law, rule, regulation or directive, whether or not
having the force of law, (i) the Canadian Administrative Agent shall suspend
the availability of the Eurodollar Rate with respect to such Canadian Lender
until such time as such situation is no longer the case, (ii) any Eurodollar
Loans from such Canadian Lender then outstanding shall bear interest at the
Alternate Base Rate for the remainder of the Interest Period applicable to such
Loan and (iii) until such time as such situation is no longer the case, any
Eurodollar Advance made thereafter shall consist of a Floating Rate Loan made
by such Canadian Lender(s) and Eurodollar Loans made by each other Canadian
Lender.  If the Required Lenders reasonably determine that deposits of a type
or maturity appropriate to match fund Eurodollar Advances are not available,
the Canadian Administrative Agent shall suspend the availability of the
Eurodollar Rate with respect to any Eurodollar Advances made after the date of
any such determination until such time as such situation is no longer the case.
If the Required Lenders determine that the Eurodollar Rate does not accurately
reflect the cost of making a Eurodollar Advance at such Eurodollar Rate, then,
if for any reason whatsoever the provisions of Section 6.1 are inapplicable,
the Canadian Administrative Agent shall suspend the availability of the
Eurodollar Rate with respect to any Eurodollar Advances made on or after the
date of any such determination until such time as such situation is no longer
the case and shall require any outstanding Eurodollar Advances to be repaid.

       6.3.   Funding Indemnification.  If any payment of a Eurodollar Advance
occurs on a date which is not the last day of the applicable Interest Period,
whether because of acceleration, prepayment, conversion or otherwise (except
pursuant to Section 6.2), or a Eurodollar Advance is not made on the date
specified by the Company for any reason other than default by the Canadian
Lenders, the Company will indemnify each Canadian Lender for any loss or cost
incurred by it resulting therefrom, including, without limitation, any loss or
cost in liquidating or employing deposits acquired to fund or maintain the
Eurodollar Advance (net of any cost or expense, unless Section 6.1, 6.5 or 6.6
is applicable thereto, which the Canadian Lender would have incurred with
respect to such Eurodollar Advance had such prepayment or failure to fund not
occurred).

       6.4.   Lending Installations.  Each Canadian Lender may book its Loans
at any Lending Installation selected by such Canadian Lender and may change its
Lending Installation from time to time.  All terms of this Agreement shall
apply to any such Lending Installation and the Notes shall be deemed held by
each Canadian Lender for the benefit of such Lending Installation.  Each
Canadian Lender may, by written or telex or facsimile notice to the Canadian
Administrative Agent and the Company, designate a Lending Installation through
which Loans will be made by it and for whose account Loan payments are to be
made.  To the extent reasonably possible, each Canadian Lender shall designate
an alternate Lending Installation with respect to its Eurodollar Loans to
reduce any liability of the Company to such Canadian Lender under Sections 6.1,
6.5 and 6.6 or to avoid the unavailability of a Rate Option under Section 6.2,
so long as such designation is not disadvantageous to such Canadian Lender in
the sole opinion of such Canadian Lender.





                                       23
<PAGE>   30
       6.5.   Increased Capital Costs.  If any change in, or the introduction,
adoption, effectiveness, interpretation, reinterpretation or phase-in of, any
law or regulation, directive, guideline, decision or request (whether or not
having the force of law) of any court, central bank, regulator or other
governmental authority affects or would affect the amount of capital required
or expected to be maintained by any Canadian Lender or any Person controlling
such Canadian Lender, and such Canadian Lender determines (in its sole and
absolute discretion) that the rate of return on its or such controlling
Person's capital as a consequence of its Commitments or the Loans made by such
Canadian Lender is reduced to a level below that which such Canadian Lender, or
such controlling Person, as the case may be, could have achieved but for the
occurrence of any such circumstance (taking into account such Person's policies
as to capital adequacy), then, in any such case upon notice from time to time
by such Canadian Lender to the Company, the Company shall immediately pay
directly to such Canadian Lender additional amounts sufficient to compensate
such Canadian Lender or such controlling Person for such reduction in rate of
return.  A statement of such Canadian Lender as to any such additional amount
or amounts (including calculations thereof in reasonable detail) shall, in the
absence of manifest error, be conclusive and binding on the Company.  In
determining such amount, such Canadian Lender may use any method of averaging
and attribution that it (in its sole and absolute discretion) shall deem
applicable.

       6.6.   Taxes.  All payments by the Company or any Guarantor of principal
of, and interest on, the Loans and all other amounts payable hereunder and in
connection herewith shall be made free and clear of and without deduction for
any present or future income, excise, stamp or franchise taxes and other taxes,
fees, duties, withholdings or other charges of any nature whatsoever imposed by
any taxing authority, but excluding franchise taxes and taxes imposed on or
measured by any Agent's or any Canadian Lender's, as applicable, net income or
receipts (such non-excluded items being called "Taxes").  In the event that any
withholding or deduction from any payment to be made by the Company or any
Guarantor hereunder or under any Canadian Loan Document is required in respect
of any Taxes pursuant to any applicable law, rule or regulation, then the
Company will

              (a)    pay directly to the relevant authority the full amount
       required to be so withheld or deducted;

              (b)    promptly forward to the Canadian Administrative Agent an
       official receipt or other documentation satisfactory to the Canadian
       Administrative Agent or the relevant Agent or Canadian Lender evidencing
       such payment to such authority; and

              (c)    pay to the Canadian Administrative Agent for the account
       of the Agents and the Canadian Lenders such additional amount or amounts
       as is necessary to ensure that the net amount actually received by each
       Agent and Canadian Lender will equal the full amount such Agent or
       Canadian Lender would have received had no such withholding or deduction
       been required.

Moreover, if any Taxes are directly asserted against any Agent or any Canadian
Lender, with respect to any payment received by it hereunder or in connection
herewith, the relevant Agent or Canadian Lender may pay such Taxes and the
Company will promptly pay such additional amounts (including any penalties,
interest or expenses) as is necessary in order that the net amount received by
such Person after the payment of such Taxes (including any Taxes on such
additional amount) shall equal the amount such Person would have received had
such Taxes not been asserted.

       If the Company fails to pay any Taxes when due to the appropriate taxing
authority or fails to remit to the Canadian Administrative Agent, for the
account of the respective Agents and Canadian Lenders, the required receipts or
other required documentary evidence, the Company shall indemnify the Agents and
the Canadian Lenders for any incremental Taxes, interest or penalties that may
become payable by any Agent or Canadian Lender as a result of any such failure.
For purposes of this Section 6.6, a distribution hereunder by the Canadian
Administrative Agent or any other Agent or any Canadian Lender to or for the
account of any Agent or Canadian Lender shall be deemed a payment by the
Company.

       6.7.   Canadian Lender Statements; Survival of Indemnity; Substitution
of Canadian Lenders; Limitation on Claims by Canadian Lenders.  Each Agent and
Canadian Lender shall deliver to the Company and the Canadian





                                       24
<PAGE>   31
Administrative Agent a written statement of such Agent or Canadian Lender, as
the case may be, as to the amount due, if any, under Sections 6.1, 6.3, 6.5 or
6.6.  Such written statement shall set forth in reasonable detail the
calculations upon which such Agent or Canadian Lender, as the case may be,
determined such amount and shall be final, conclusive and binding on the
Company in the absence of manifest error.  Determination of amounts payable
under such Sections in connection with a Eurodollar Loan shall be calculated as
though each Canadian Lender funded its Eurodollar Loan through the purchase of
a deposit of the type and maturity corresponding to the deposit used as a
reference in determining the Eurodollar Rate applicable to such Loan, whether
in fact that is the case or not.  Unless otherwise provided herein, the amount
specified in the written statement shall be payable on demand after receipt by
the Company of the written statement.  The obligations of the Company under
Sections 6.1, 6.3, 6.5 and 6.6 shall survive payment of the Obligations and
termination of this Agreement.  In the event that any Canadian Lender shall
deliver to the Company and the Canadian Administrative Agent a written
statement as to an amount due under Section 6.1, 6.3, 6.5 or 6.6, the Company
may, at its sole expense and effort, require such Canadian Lender to transfer
and assign (in accordance with Section 17.3, without recourse, all of its
interests, rights and obligations under this Agreement to an assignee which
shall assume such assigned obligations (which assignee may be another Canadian
Lender, if a Canadian Lender accepts such assignment); provided that (i) such
assignment shall not conflict with any law, rule or regulation or order of any
court or other governmental authority, (ii) the Company shall have received a
written consent of the Canadian Administrative Agent and the Arrangers in the
case of an entity that is not a Canadian Lender, which consent shall not be
unreasonably withheld, (iii) the Company or such assignee shall have paid to
the assigning Canadian Lender in immediately available funds the principal of
and interest accrued to the date of such payment on the Loans made by it
hereunder and all other amounts owed to it hereunder and the fee payable to the
Canadian Administrative Agent pursuant to Section 17.3(b) and (iv) that nothing
in the foregoing is intended or shall be construed as obligating any Canadian
Lender to locate such an assignee.  The Company shall not be required to pay to
any Canadian Lender any amount under Section 6.1, 6.3, 6.5, or 6.6 in respect
of any time or period more than twelve months prior to the time such Canadian
Lender notifies or bills the Company of or for such amount.

       6.8.   [Intentionally Omitted].

       6.9.   Currency Conversion and Currency Indemnity.

       (a)    Payments in Agreed Currency.  The Company or any Guarantor shall
make payment relative to any Obligation in the currency (the "Agreed Currency")
in which the Obligation was effected.  If any payment is received on account of
any Obligation in any currency (the "Other Currency") other than the Agreed
Currency (whether voluntarily or pursuant to an order or judgment or the
enforcement thereof or the realization of any security or the liquidation of
the Company or any Guarantor or otherwise howsoever), such payment shall
constitute a discharge of the liability of the Company or such Guarantor
hereunder and under the other Canadian Loan Documents in respect of such
obligation only to the extent of the amount of the Agreed Currency which the
relevant Canadian Lender or Agent, as the case may be, is able to purchase with
the amount of the Other Currency received by it on the Business Day next
following such receipt in accordance with its normal procedures and after
deducting any premium and costs of exchange.

       (b)    Conversion of Agreed Currency into Judgment Currency.  If, for
the purpose of obtaining or enforcing judgment in any court in any
jurisdiction, it becomes necessary to convert into a particular currency (the
"Judgment Currency") any amount due in the Agreed Currency then the conversion
shall be made on the basis of the rate of exchange prevailing on the Business
Day next preceding the day on which judgment is given and in any event the
Company or a Guarantor shall be obligated to pay the Agents and the Canadian
Lenders any deficiency in accordance with Section 6.9(a).  For the foregoing
purposes "rate of exchange" means the rate at which the relevant Canadian
Lender or Agent, as applicable, in accordance with its normal banking
procedures is able on the relevant date to purchase the Agreed Currency with
the Judgment Currency after deducting any premium and costs of exchange.

       (c)    Circumstances Giving Rise to Indemnity.  If (i) any Canadian
Lender or the Agent receives any payment or payments on account of the
liability of the Company or any Guarantor hereunder pursuant to any judgment or
order in any Other Currency, and (ii) the amount of the Agreed Currency which
the relevant Canadian Lender or Agent, as applicable, is able to purchase on
the Business Day next following such receipt with the proceeds of such





                                       25
<PAGE>   32
payment or payments in accordance with its normal procedures and after
deducting any premiums and costs of exchange is less than the amount of the
Agreed Currency due in respect of such obligations immediately prior to such
judgment or order, then the Company or the Guarantor on demand shall, and the
Company or the Guarantor hereby agree to, indemnify and save the Canadian
Lenders and the Agents harmless from and against any loss, cost or expense
arising out of or in connection with such deficiency.

       (d)    Indemnity Separate Obligation.  The agreement of indemnity
provided for in Section 6.9(c) shall constitute an obligation separate and
independent from all other obligations contained in this Agreement, shall give
rise to a separate and independent cause of action, shall apply irrespective of
any indulgence granted by the Canadian Lenders or Agents or any of them from
time to time, and shall continue in full force and effect notwithstanding any
judgment or order for a liquidated sum in respect of an amount due hereunder or
under any judgment or order.


                                  ARTICLE VII

                              CONDITIONS PRECEDENT

       7.1.   Conditions of Effectiveness.  The effectiveness of this Agreement
and the obligation of each Canadian Lender to make Loans hereunder, are subject
to the conditions precedent that the following documents have been furnished to
the Global Administrative Agent and the Canadian Administrative Agent, each in
form and substance satisfactory to each of the Global Administrative Agent, the
Canadian Administrative Agent and the Arrangers, and each (except for the
Notes, of which only one original of each type shall be signed for each
Canadian Lender) in sufficient number of duly executed signed counterparts (or
photocopies thereof) to provide one for the Global Administrative Agent, the
Canadian Administrative Agent, the Arrangers and each Canadian Lender:

              (i)    Copies of the Articles of Incorporation of the Company,
       together with all amendments, and certificates of good standing, all of
       the foregoing certified by the appropriate governmental officer in its
       jurisdiction of incorporation and, in the case of certificates of good
       standing, in each jurisdiction in which its business is conducted.

              (ii)   Copies, certified by the Secretary or Assistant Secretary
       of the Company of its by-laws and of its Board of Directors' resolutions
       (and resolutions of other bodies, if any are deemed necessary by counsel
       for the Global Administrative Agent and the Canadian Administrative
       Agent) authorizing the execution, delivery and performance of the
       Canadian Loan Documents.

              (iii)  Incumbency certificates, executed by the Secretary or
       Assistant Secretary of the Company, which shall identify by name and
       title and bear the signature of the officers of the Company authorized
       to sign the Canadian Loan Documents and to make borrowings hereunder,
       upon which certificate the Agents and the Canadian Lenders shall be
       entitled to rely until informed of any change in writing by the Company.

              (iv)   Written opinions of the Company's counsel acceptable to
       each of the Agents and the Arrangers, addressed to the Agents and the
       Canadian Lenders, in substantially the form of Exhibit B hereto, with
       such modifications, additions, alterations, exceptions, assumptions and
       provisions as shall be acceptable to each of the Agents and the
       Arrangers.

              (v)    The Notes payable to the order of each of the Canadian
       Lenders.

              (vi)   A certificate of an Authorized Officer of the Company,
       satisfactory to each of the Agents and the Arrangers, regarding
       insurance maintained by the Company.

              (vii)  The Parent Guaranty.





                                       26
<PAGE>   33
              (viii) The opinion of Burnet, Duckworth & Palmer, special counsel
       to the Canadian Administrative Agent, the Global Administrative Agent
       and the Arrangers, addressed to the Agents and the Canadian Lenders,
       substantially in the form of Exhibit F hereto.

              (ix)   The Global Effectiveness Notice.

              (x)    A certificate, signed by an Authorized Officer of the
       Company, stating that on the Global Effective Date no Default or
       Unmatured Default has occurred and is continuing.

              (xi)   Copies of the executed Australian Credit Agreement and the
       other Australian Loan Documents, the executed U.S. Credit Agreement and
       the other U.S. Loan Documents, the executed Intercreditor Agreement and
       the executed Indemnity Agreements.

              (xii)  Evidence that all Obligations of the Company and its
       Subsidiaries under that certain Credit Agreement, dated as of May 17,
       1995 (as amended, the "Existing Credit Agreement"), among the Company,
       the various financial institutions as are or may become parties thereto
       and Bank of Montreal, as Agent, shall have been (or shall simultaneously
       be) repaid, and all commitments thereunder shall have been (or shall
       simultaneously with the initial Loan be) cancelled; provided, however,
       that the Company may be required to pay at a later date break funding or
       similar loses or costs required pursuant to the Existing Credit
       Agreement by reason of repayment of advances thereunder prior to
       maturity thereof.

              (xiii) Such other instruments and documents as any of the
       Arrangers or the Agents or their counsel may have reasonably requested.

       The effectiveness of this Agreement and the obligation of each Canadian
Lender to make Loans hereunder, are further conditioned upon the Agents having
received the fees to be received as set forth in Section 2.4(b) on or prior to
the Global Effective Date.

       7.2.   Each Advance.  The Canadian Lenders shall not be required to make
any Advance unless on the applicable Borrowing Date:

              (a)    There exists no Default or Unmatured Default.

              (b)    There exists no Debt Limit Excession and the Company
       represents and warrants to the Canadian Administrative Agent and Global
       Administrative Agent that, immediately before and after such Advance,
       there exists no Debt Limit Excession other than a Debt Limit Excession
       permitted pursuant to the first proviso to Section 2.1(b).

              (c)    The representations and warranties contained in Article
       VIII, including in Sections 8.3 and 8.7, or contained in any other
       Canadian Loan Document are true and correct as of such Borrowing Date
       except for changes in the Schedules hereto reflecting transactions
       permitted by this Agreement.

              (d)    All legal requirements arising under or in connection with
       the Canadian Loan Documents or applicable laws, rules or regulations and
       incident to the making of such Advance shall be satisfactory to the
       Agents and the Arrangers and their respective counsel.

              (e)    No event, occurrence, action, inaction or other item shall
       have occurred which results in a Material Adverse Effect.

       Each Borrowing Notice and Continuation/Conversion Notice with respect to
each Advance shall constitute a representation and warranty by the Company that
the conditions contained in Sections 7.2(a), (b), (c) and (d) have been
satisfied and, that after giving effect to such Advance and the assignment or
application of the proceeds thereof, the sum





                                       27
<PAGE>   34
of the aggregate outstanding principal amount of all Borrowing Base Debt will
not exceed the Global Borrowing Base except as permitted in Section 2.1(b).


                                  ARTICLE VIII

                         REPRESENTATIONS AND WARRANTIES

       The Company represents and warrants to the Canadian Lenders and the
Agents that:

       8.1.   Corporate Existence and Standing.  The Company is a corporation,
and each Subsidiary is a corporation or other legal entity, in either case duly
incorporated or otherwise properly organized, validly existing and in good
standing under the laws of its jurisdiction of incorporation or organization
and has all requisite authority, permits and approvals, and is in good standing
to conduct its business in each jurisdiction in which its business is
conducted.

       8.2.   Authorization and Validity.  The Company and each Subsidiary has
the corporate or partnership power and authority and legal right to execute and
deliver the Canadian Loan Documents and to perform its respective obligations
thereunder.  The execution and delivery by the Company and each Subsidiary of
the Canadian Loan Documents to which it is a party and the performance of the
Company's and such Subsidiary's obligations thereunder have been duly
authorized by proper corporate or partnership proceedings, and the Canadian
Loan Documents have been duly executed and delivered and constitute legal,
valid and binding obligations of the Company and each Subsidiary party thereto,
in each case enforceable against the Company and such Subsidiary in accordance
with their terms, except as enforceability may be limited by bankruptcy,
insolvency or similar laws affecting the enforcement of creditors' rights
generally.

       8.3.   No Conflict; Government Consent.  Neither the execution and
delivery by the Company and each Subsidiary of the Canadian Loan Documents nor
the consummation of the transactions therein contemplated, nor compliance with
the provisions thereof will violate any law, rule, regulation, order, writ,
judgment, injunction, decree or award binding on the Company or any Subsidiary
or the Company's or any Subsidiary's articles of incorporation or by-laws or
partnership agreement or the provisions of any indenture, instrument or
agreement to which the Company or any Subsidiary is a party or is subject, or
by which it, or its property, is bound, or conflict with or constitute a
default thereunder, or result in the creation or imposition of any Lien in, of
or on all or any part of the property of the Company or any Subsidiary.  No
order, consent, approval, license, authorization, or validation of, or filing,
recording or registration with, or exemption by, any governmental or public
body or authority, or any subdivision thereof, is required to authorize, or is
required in connection with the execution, delivery and performance of, or the
legality, validity, binding effect or enforceability of, any of the Canadian
Loan Documents.

       8.4.   Financial Statements.  The consolidated (i) financial statements
of the Parent and its Subsidiaries dated December 31, 1995, and (ii) report and
accompanying financial statements of the Company and its Subsidiaries dated
December 31, 1995, heretofore delivered to the Canadian Lenders were prepared
in accordance with generally accepted accounting principles in effect on the
date such statements were prepared and fairly present the consolidated
financial condition of the Parent, the Company and their respective
Subsidiaries at such date and the consolidated results of their operations for
the period then ended.

       8.5.   Material Adverse Change.  Since December 31, 1995, there has been
no change in the business, assets, properties, operations, condition (financial
or otherwise) or results of operations or prospects of the Company and its
Subsidiaries or any legal or regulatory development which results in a Material
Adverse Effect.

       8.6.   Taxes.  The Company and the Subsidiaries have filed all federal
and provincial tax returns and all other tax returns which are required to be
filed and have paid all taxes due pursuant to said returns or pursuant to any
assessment received by the Company or any Subsidiary, except such taxes, if
any, as are being contested in good faith and as to which adequate reserves
have been provided.  The income tax returns of the Company and the Subsidiaries
have





                                       28
<PAGE>   35
been audited by either Revenue Canada-Taxation or the Internal Revenue Service
or, if no audit was performed, the statute of limitations permitting such an
audit has run, through the fiscal year ended December 31, 1988.  No tax liens
have been filed and no claims are being asserted with respect to any such
taxes.  The charges, accruals and reserves on the books of the Company and the
Subsidiaries in respect of any taxes or other governmental charges are
adequate.

       8.7.   Litigation and Guaranteed Obligations.  There is no litigation,
arbitration, governmental investigation, proceeding or inquiry pending or, to
the knowledge of any of their officers, threatened against or affecting the
Company or any Subsidiary which results in a Material Adverse Effect.  The
Company and its Subsidiaries have no material contingent obligations not
provided for or disclosed in the financial statements referred to in Section
8.4.

       8.8.   Subsidiaries.  Schedule 8.8 hereto contains an accurate list of
all of the presently existing Subsidiaries, including, without limitation,
Borrowing Base Subsidiaries, of the Company as of the date of this Agreement,
setting forth their respective jurisdictions of incorporation or organization
and the percentage of their respective capital stock, or the revenue share
attributable to the general and limited partnership interests, as the case may
be, owned by the Company or other Subsidiaries.  All of the issued and
outstanding shares of capital stock of such Subsidiaries which are corporations
have been duly authorized and issued and are fully paid and non-assessable.

       8.9.   Unfunded Pension Liabilities.  The unfunded pension or similar
liabilities of the Company and its Subsidiaries do not in the aggregate exceed
$7,000,000.

       8.10.  Accuracy of Information.  No information, exhibit or report
furnished by the Parent, the Company or any Subsidiary to any Agent or to any
Canadian Lender in connection with the negotiation of, or compliance with, the
Canadian Loan Documents contained any material misstatement of fact or omitted
to state a material fact or any fact necessary to make the statements contained
therein not misleading.

       8.11.  [Intentionally Omitted].

       8.12.  Material Agreements.  Neither the Company nor any Subsidiary is
in default in the performance, observance or fulfillment of any of the
obligations, covenants or conditions contained in (i) any agreement to which it
is a party, which default would result in a Material Adverse Effect or (ii) any
agreement or instrument evidencing or governing Indebtedness which default
would result in a Material Adverse Effect.

       8.13.  Compliance With Laws.  The Company and the Subsidiaries have
complied in all material respects with all applicable statutes, rules,
regulations, orders and restrictions of any domestic or foreign government or
any instrumentality or agency thereof, having jurisdiction over the conduct of
their respective businesses or the ownership of their respective Properties.
Neither the Company nor any of the Subsidiaries has received any notice to the
effect that it, its operations or the Properties are not in material compliance
with any of the requirements of applicable federal, provincial, state or local
environmental, health and safety statutes and regulations, or are the subject
of any federal, provincial, state or local investigation evaluating whether any
remedial action is needed to respond to a release of any toxic or hazardous
waste or substance into the environment, whether from the Properties or
elsewhere, which in any case would result in a Material Adverse Effect.

       8.14.  Title to Properties.  Each of the Company and the Subsidiaries
has defensible title to substantially all of its properties and assets, whether
legal or beneficial, free and clear of any and all Liens other than those Liens
permitted by Section 11.5.  The 1996 Engineers' Report refers to and covers all
of the reserves in the Properties as of the Global Effective Date and such
Report covers no reserves other than in such Properties.

       8.15.  Investment Company Act.  Neither the Company nor any Subsidiary
is an "investment company" or a company "controlled" by an "investment
company," within the meaning of the Investment Company Act of 1940, as amended.





                                       29
<PAGE>   36
       8.16.  Public Utility Holding Company Act.  Neither the Company nor any
Subsidiary is a "holding company" or a "subsidiary company" of a "holding
company," or an "affiliate" of a "holding company" or of a "subsidiary company"
of a "holding company," within the meaning of the Public Utility Holding
Company Act of 1935, as amended.

       8.17.  Post-Retirement Benefits.  The present value of the expected cost
of post-retirement medical and insurance benefits payable by the Company and
its Subsidiaries to its employees and former employees, as estimated by the
Company in accordance with procedures and assumptions deemed reasonable by the
Agents, does not exceed $3,000,000.

       8.18.  Solvency.  As of the Global Effective Date, (i) the Company is
Solvent, (ii) the Company and its Consolidated Subsidiaries of the Company on a
consolidated basis are Solvent, and (iii) each Guarantor and its Consolidated
Subsidiaries on a consolidated basis are Solvent.

       8.19.  Environmental Warranties.  In the ordinary course of its
business, the Company conducts an ongoing review of the effect of Environmental
Laws on the business, operations and Properties of the Company and its
Subsidiaries, in the course of which it identifies and evaluates associated
liabilities and costs (including any capital or operating expenditures required
for clean-up or closure of Properties presently owned or operated, any capital
or operating expenditures required to achieve or maintain compliance with
environmental protection standards imposed by law or as a condition of any
license, permit or contract, any related constraints on operating activities,
including any periodic or permanent shutdown of any facility or reduction in
the level of or change in the nature of operations conducted thereat and any
actual or potential liabilities to third parties, including employees, and any
related costs and expenses).  On the basis of this review, the Company has
reasonably concluded that, except as disclosed in writing by the Company to the
Canadian Lenders and the Agents, to the best of its knowledge after due
inquiry:

              (a)    all facilities and property (including underlying
       groundwater) owned, leased or operated by the Company or any Subsidiary
       have been, and continue to be, owned, leased or operated by the Company
       or any Subsidiary in material compliance with all Environmental Laws;

              (b)    there have been no past, and there are no pending or
       threatened

                     (i)    claims, complaints, notices or inquiries to, or
              requests for information received by, the Company or any
              Subsidiary with respect to any alleged violation of any
              Environmental Law that, singly or in the aggregate, result in a
              Material Adverse Effect, or

                     (ii)   claims, complaints, notices or inquiries to, or
              requests for information received by, the Company or any
              Subsidiary regarding potential liability under any Environmental
              Law or under any common law theories relating to operations or
              the condition of any facilities or property (including underlying
              groundwater) owned, leased or operated by the Company or any
              Subsidiary that, singly or in the aggregate, result in a Material
              Adverse Effect; or

                     (iii)  Governmental or court orders, including, without
              limitation, stop, clean up or preventative orders, directions or
              action requests which have been received by the Borrower or any
              Subsidiary or of which the Borrower or any Subsidiary is
              otherwise aware, relating to environmental matters requiring any
              work, repair, remediation, clean up, construction or capital
              expenditures that have or could reasonably be expected to have, a
              Material Adverse Effect;

              (c)    there have been no Releases of Hazardous Materials at, on
       or under any property now or previously owned or leased by the Company
       or any Subsidiary that, singly or in the aggregate, result in a Material
       Adverse Effect;





                                       30
<PAGE>   37
              (d)    the Company and each Subsidiary have been issued and are
       in compliance with all permits, certificates, approvals, licenses and
       other authorizations relating to environmental matters and necessary or
       desirable for their businesses except where failure to comply would not
       have a Material Adverse Effect;

              (e)    no property now or previously owned, leased or operated by
       the Company or any Subsidiary is listed or proposed for listing on any
       federal, provincial or state list of sites requiring investigation or
       clean-up;

              (f)    there are no underground storage tanks, active or
       abandoned, including petroleum storage tanks, on or under any property
       now or previously owned, leased or operated by the Company or any
       Subsidiary that, singly or in the aggregate, result in a Material
       Adverse Effect;

              (g)    none of the Company or any Subsidiary has directly
       transported or directly arranged for the transportation of any Hazardous
       Material to any location which is listed or proposed for listing on any
       federal, provincial or state list or which is the subject of federal,
       provincial, state or local enforcement actions or other investigations
       which may lead to material claims against the Company or such Subsidiary
       for any remedial work, damage to natural resources or personal injury
       which, singly or in the aggregate, results in a Material Adverse Effect;

              (h)    there are no polychlorinated biphenyls, radioactive
       materials or friable asbestos present at any property now or previously
       owned or leased by the Company or any Subsidiary that, singly or in the
       aggregate, results in a Material Adverse Effect; and

              (i)    no condition exists at, on or under any property now or
       previously owned or leased by the Company or any Subsidiary which, with
       the passage of time, or the giving of notice or both, would give rise to
       material liability under any Environmental Law that, singly or in the
       aggregate results in a Material Adverse Effect.


                                   ARTICLE IX

                             AFFIRMATIVE COVENANTS

       During the term of this Agreement, unless the Required Lenders shall
otherwise consent in writing:

       9.1.   Financial Reporting.  The Company will maintain a system of
accounting established and administered in accordance with generally accepted
accounting principles, and furnish, or assist the Parent in furnishing, to the
Global Administrative Agent, the Canadian Administrative Agent and the Canadian
Lenders:

              (a)    As soon as available and in any event within 90 days after
       the close of each of its fiscal years, a copy of the report for such
       year and accompanying financial statements, including balance sheets as
       of the end of such period, related profit and loss and reconciliation of
       surplus statements, and a statement of cash flows, all prepared in
       accordance with generally accepted accounting principles and signed by
       an Authorized Officer of the Company, such signature deemed to be a
       certification (i) such financial statements present fairly in accordance
       with generally accepted accounting principles the financial position of
       the Company and its Consolidated Subsidiaries and (ii) no Default,
       Unmatured Default or Debt Limit Excession has occurred and is
       continuing.

              (b)    As soon as available and in any event within 45 days after
       the close of the first three quarterly periods of each of its fiscal
       years, for the Company and its Consolidated Subsidiaries, consolidated
       unaudited balance sheets as at the close of each such period and
       consolidated profit and loss and reconciliation of surplus statements
       and a statement of cash flows for the period from the beginning of such
       fiscal year to the





                                       31
<PAGE>   38
       end of such quarter, all prepared in accordance with generally accepted
       accounting principles and signed by an Authorized Officer of the
       Company, such signature deemed to be a certification that (i) such
       financial statements present fairly in accordance with generally
       accepted accounting principles the financial position of the Company and
       its Consolidated Subsidiaries and (ii) that no Default, Unmatured
       Default or Debt Limit Excession has occurred and is continuing.

              (c)    Together with the financial statements required under
       clauses (a) and (b), a compliance certificate, in substantially the form
       of Exhibit C hereto, signed by an Authorized Officer of the Parent and
       an Authorized Officer of the Company and addressing the matters set
       forth therein.

              (d)    Promptly after December 31 of each calendar year,
       commencing December 31, 1996, and in any event not later than March 15
       of the next succeeding calendar year, an Approved Engineers' Report
       prepared as of December 31 of such calendar year, in form and substance
       satisfactory to the Engineering Banks.

              (e)    Promptly after June 30 of each calendar year and in any
       event not later than September 15 of such calendar year, a Parent's
       Engineers' Report prepared as of June 30 of such calendar year, in form
       and substance satisfactory to the Engineering Banks.

              (f)    Within 45 days in the case of a Parent's Engineers' Report
       and 60 days in the case of an Approved Engineers' Report, of any request
       by the Required Lenders in connection with any (other than the scheduled
       semi-annual redeterminations of the Global Borrowing Base) determination
       of the Global Borrowing Base pursuant to Section 2.3(a) of the U.S.
       Credit Agreement, an Approved Engineers' Report or a Parent's Engineers'
       Report, as the case may be, prepared as of the date of such request, in
       form and substance satisfactory to the Required Lenders.

              (g)    Promptly upon the furnishing thereof to the shareholders
       of the Parent or the Company copies of all financial statements, reports
       and proxy statements so furnished.

              (h)    Promptly upon the filing thereof, copies of all publicly
       available registration statements and annual, quarterly, monthly or
       other regular reports which the Parent or the Company or any of their
       Subsidiaries file with the Securities and Exchange Commission or any
       federal or provincial securities regulatory body in Canada.

              (i)    Promptly after December 31 of each calendar year,
       commencing December 31, 1996, and in any event no later than March 15 of
       the next succeeding calendar year, a budget (including specific capital
       expenditures information) through the Termination Date for the Parent
       and its Subsidiaries certified by an Authorized Officer of the Parent
       and in a format consistent with the Projections and otherwise in form
       and substance satisfactory to the Global Administrative Agent, the
       Canadian Administrative Agent and the Arrangers.

              (j)    At the request of the Global Administrative Agent, the
       Canadian Administrative Agent, either Arranger, or the Required Lenders
       promptly after June 30 of each calendar year, commencing June 30, 1997,
       and in any event no later than September 15 of such calendar year, an
       update of the budget described in clause (i) of this Section 9.1 in form
       and substance satisfactory to the Global Administrative Agent and signed
       by an Authorized Officer of the Parent.

              (k)    Promptly and in any event within 40 days after the close
       of each calendar quarter during each year, a certificate of an
       Authorized Officer of the Parent certifying to the Global Administrative
       Agent, the Canadian Administrative Agent and the Canadian Lenders the
       Debt/Capitalization Ratio and the calculation thereof as of the last day
       of the immediately preceding calendar quarter.





                                       32
<PAGE>   39
              (l)    Such other information (including engineering, financial
       and non-financial information) as the Global Administrative Agent, the
       Canadian Administrative Agent, either Arranger or any Canadian Lender
       may from time to time reasonably request.

       9.2.   Use of Proceeds.  The Company will, and will cause each
Subsidiary to, use the proceeds of the Loans (i) to refinance existing
Indebtedness of the Company and the Subsidiaries or (ii) for the Company's and
the Subsidiaries' general corporate purposes.

       9.3.   Notice of Default, Unmatured Default, Litigation and Material
Adverse Effect.  The Company will give prompt notice in writing to the Global
Administrative Agent, the Canadian Administrative Agent, the Canadian Lenders
and to all Guarantors of (i) the occurrence of any Default or Unmatured Default
and the steps, if any, being taken to cure it, (ii) the occurrence of any Debt
Limit Excession and the steps, if any, being taken to cure it, (iii) the
occurrence of any adverse development with respect to any labor controversy,
litigation, action or proceeding described in Section 8.7, or the commencement
of any labor, controversy, litigation, action or proceeding of the type
described in Section 8.7 together with copies of all material pleadings
relating thereto, and (iv) the occurrence of any other development, financial
or otherwise, which results in a Material Adverse Effect or might materially
adversely affect the ability of the Company to repay the Obligations.

       9.4.   Conduct of Business.  The Company will, and will cause its
Subsidiaries to, carry on and conduct its respective business in substantially
the same manner and in substantially the same fields of enterprise as it is
presently conducted and, except to the extent permitted by Section 11.2 or
Section 11.3, will, and will cause each Subsidiary to, do all things necessary
to remain duly incorporated or organized, validly existing and in good standing
as a corporation or partnership, as the case may be, in its jurisdiction of
incorporation or organization and maintain all requisite authority to conduct
its business in each jurisdiction in which its business is conducted.

       9.5.   Taxes.  The Company will, and will cause each Subsidiary to, pay
when due all taxes, assessments and governmental charges and levies upon it or
its income, profits or property, and all lawful claims which, if unpaid, might
become a Lien upon any properties of the Company or any Subsidiary, except
those which are being contested in good faith by appropriate proceedings and
with respect to which adequate reserves in accordance with generally accepted
accounting principles have been set aside on its books.

       9.6.   Insurance.  The Company and its Subsidiaries will maintain, with
financially sound and reputable insurers, insurance with respect to their
respective properties and business against such liabilities, casualties, risks
and contingencies and in such types and amounts as customary in the case of
corporations engaged in the same or similar businesses and similarly situated.
Upon the request of the Global Administrative Agent or the Canadian
Administrative Agent, the Company will furnish or cause to be furnished to the
Global Administrative Agent and the Canadian Administrative Agent from time to
time a summary of the insurance coverage of the Company and its Subsidiaries in
form and substance satisfactory to the Required Lenders in their reasonable
judgment, and, if requested, will furnish the Global Administrative Agent and
the Canadian Administrative Agent copies of the applicable policies.  In the
case of any fire, accident or other casualty causing loss or damage to any
property of the Company or any of its Subsidiaries, the proceeds of such
policies will be used (i) to repair or replace the damaged property or (ii) to
prepay the Obligations, at the election of the Company.

       9.7.   Compliance with Laws.  The Company will, and will cause each
Subsidiary to, comply with all laws, rules, regulations, orders, writs,
judgments, injunctions, decrees or awards to which it may be subject.

       9.8.   Maintenance of Properties.  The Company will and will cause each
Subsidiary to, do all things necessary to maintain, preserve, protect and keep
its properties in good repair, working order and condition, and make all
necessary and proper repairs, renewals and replacements so that its business
carried on in connection therewith may be properly conducted at all times.





                                       33
<PAGE>   40
       9.9.   Inspection.  The Company will, and will cause each Subsidiary to,
permit the Canadian Lenders, by their respective representatives and agents, to
inspect any of the properties, corporate books and financial records of the
Company and each Subsidiary, to examine and make copies of the books of
accounts and other financial records of the Company and each Subsidiary, and to
discuss the affairs, finances and accounts of the Company and each Subsidiary
with, and to be advised as to the same by, their respective officers at such
reasonable times and intervals as the Canadian Lenders may designate.  Any
information received by the Canadian Lenders as a result of the foregoing shall
be included in information subject to the confidentiality provisions set forth
in Exhibit G hereto.

       9.10.  Operation of Properties.  The Company will, and will cause each
Subsidiary to, preserve, operate and maintain, or cause to be preserved,
operated and maintained, the Properties in a good and workmanlike manner
continuously to their economic limit as a prudent operator in accordance with
good oil and gas industry standards.

       9.11.  Delivery of Guaranties.  At the request of the Global
Administrative Agent or the Canadian Administrative Agent, the Company shall at
its own expense from time to time cause (i) each of the Company's Borrowing
Base Subsidiaries and (ii) after the occurrence of any Material Adverse Effect
or Downgrade Condition, each of the Company's Subsidiaries to deliver to the
Canadian Administrative Agent a duly executed Guaranty, substantially in the
form of Exhibit H, together with such related documents and opinions as the
Canadian Administrative Agent may request; provided, however, that no such Non-
Borrowing Base Subsidiary shall be required to deliver such a Guaranty if such
Non-Borrowing Base Subsidiary is prohibited from delivering such Guaranty
pursuant to a contractual obligation, acceptable to the Canadian Administrative
Agent, in its reasonable discretion, arising with a Person other than a
Subsidiary or an Affiliate of the Company existing as of the date of such
request by the Canadian Administrative Agent.

       9.12.  Environmental Covenant.  The Company will, and will cause each
Subsidiary to,

              (a)    use, operate and maintain all of its facilities and
       properties in material compliance with all Environmental Laws, keep all
       necessary permits, approvals, certificates, licenses and other
       authorizations relating to environmental matters in effect and remain in
       material compliance therewith, and handle all Hazardous Materials in
       material compliance with all applicable Environmental Laws;

              (b)    (i) promptly notify the Global Administrative Agent and
       the Canadian Administrative Agent and provide copies upon receipt of all
       material written claims, complaints, notices, liens or inquiries
       relating to the condition of its facilities and properties or compliance
       with Environmental Laws, (ii) within ninety (90) days have dismissed
       with prejudice any actions or proceedings relating to compliance with
       Environmental Laws which could reasonably be expected to result in
       liability to the Company and its Subsidiaries in excess of ten percent
       (10%) of the Company's Consolidated Tangible Net Worth and (iii)
       diligently pursue cure of any material underlying environmental problem
       which forms the basis of any such claim, complaint, notice, lien,
       inquiry, proceeding or action; and

              (c)    provide such information and certifications which either
       of the Arrangers or the Canadian Administrative Agent may reasonably
       request from time to time to evidence compliance with this Section 9.12.

       9.13.  Further Assurances.  The Company will cure and will cause its
respective Subsidiaries to cure promptly any defects in the creation and
issuance of any Obligations and the execution and delivery of the Parent
Guaranty or any Guaranty.  The Company and each Subsidiary will at its expense
promptly execute and deliver to the Global Administrative Agent and the
Canadian Administrative Agent upon request all such other and further
reasonable documents, agreements and instruments in compliance with, or
accomplishment of, the covenants and agreements of the Company and such
Subsidiary in any Canadian Loan Document.





                                       34
<PAGE>   41
                                   ARTICLE X

                              FINANCIAL COVENANTS

       The Company covenants with the Agents and Canadian Lenders that:

       10.1.  Consolidated Tangible Net Worth.  The Parent will maintain
Consolidated Tangible Net Worth of not less than the sum of (i) $825,000,000,
plus (ii) the product of 0.50 times the sum of Consolidated Net Income for each
calendar quarter beginning with the calendar quarter ending June 30, 1996
during which Consolidated Net Income is greater than $0, plus (iii) the product
of 0.50 times the proceeds of the sale by the Parent and its Subsidiaries of
securities (other than securities constituting Indebtedness) net of reasonable
incidental, brokerage and legal costs actually paid to third parties (which
proceeds, in the event of a pooling of interest transaction, shall be deemed to
be one-half of the net addition to the Parent's consolidated balance sheet).

       10.2.  Ratio of EBITDDA to Consolidated Interest.  The Parent shall not
permit the ratio of (i) EBITDDA to (ii) Consolidated Interest Expense for any
four consecutive calendar quarters ending on the last day of any calendar
quarter to be less than 3.70 to 1.0.


                                   ARTICLE XI

                               NEGATIVE COVENANTS

       11.1.  Indebtedness.  The Company will not, nor will it permit any
Borrowing Base Subsidiary to, create, incur or suffer to exist any
Indebtedness, except:

              (a)    Borrowing Base Debt;

              (b)    Excluded Principal Debt;

              (c)    The Guaranteed Obligations permitted under Section 11.4
       (whether or not then payable), and intercompany Indebtedness pursuant to
       Investments by the Company permitted by Sections 11.10(d), (e), (f) and
       (g);

              (d)    Indebtedness existing on the date hereof and described in
       Schedule 11.1 hereto;

              (e)    Indebtedness of the type referred to in clause (vi) of the
       definition of Indebtedness;

              (f)    Indebtedness of the type referred to in clause (vii) of
       the definition of Indebtedness in a maximum aggregate amount not in
       excess of $50,000,000; provided such Indebtedness is otherwise permitted
       pursuant to Section 11.11;

              (g)    Indebtedness of the type referred to in clause (viii) of
       the definition of Indebtedness in a maximum aggregate amount not in
       excess of $50,000,000;

              (h)    [Intentionally Omitted];

              (i)    Indebtedness of the type referred to in clause (v) of the
       definition of Indebtedness in a maximum aggregate amount not in excess
       of $5,000,000; and

              (j)    Additional Indebtedness of the Company not included in the
       foregoing clauses (a) through (i) in an aggregate principal amount not
       exceeding $5,000,000.





                                       35
<PAGE>   42
       11.2.  Merger.  The Company will not, nor will it permit any Borrowing
Base Subsidiary to, amalgamate, merge or consolidate with or into any other
Person or Persons unless:

              (i)    the Company or such Borrowing Base Subsidiary, as the case
       may be, is the surviving entity of such amalgamation, merger or
       consolidation (and if an amalgamation, merger or consolidation between
       the Company and any Borrowing Base Subsidiary, the Company is the
       surviving entity) and no Change of Control occurs, or, with respect to
       any amalgamation, merger or consolidation in which any Person other than
       the Company or any Borrowing Base Subsidiary is the surviving entity,
       such Person becomes, as a result of such amalgamation, merger or
       consolidation, a Borrowing Base Subsidiary of which the Company owns,
       directly or indirectly, 100% of the outstanding capital stock, free and
       clear of all Liens, other than Liens permitted by Section 11.5 and, with
       respect to any amalgamation, merger or consolidation involving any
       Guarantor, such Person shall at its own expense deliver to the Canadian
       Administrative Agent a duly executed Guaranty, substantially in the form
       of Exhibit H, together with such related documents and opinions as the
       Canadian Administrative Agent may request; and

              (ii)   after giving effect to such amalgamation, merger or
       consolidation, no Default or Unmatured Default shall occur and be
       continuing.

       11.3.  Sales of Properties or Borrowing Base Subsidiaries.  The Company
will not, nor will it permit any of its Borrowing Base Subsidiaries to, lease,
sell, transfer, convey, assign, issue or otherwise dispose of any of its
Properties or any of its Borrowing Base Subsidiaries to any other Person,
whether in one transaction or in a series of transactions, except if the
transaction or transactions fall into one of the following categories:

              (i)    Sales of Hydrocarbon inventory and severed oil and gas in
       the ordinary course of business.

              (ii)   Sales of Properties (other than Hydrocarbon inventory and
       severed oil and gas in the ordinary course of business) and Sales of any
       Borrowing Base Subsidiary which have an aggregate fair market value (or,
       with respect to the Sale of a Borrowing Base Subsidiary, the amount
       allocated to such Sale pursuant to Section 2.3(f) of the U.S. Credit
       Agreement) not in excess of $50,000,000 for all such Sales permitted
       pursuant to this clause (ii) during any period occurring between
       successive dates of determination of the Global Borrowing Base pursuant
       to Section 2.3 of the U.S. Credit Agreement.

              (iii)  Sales of Properties (other than sales of Hydrocarbon
       inventory and severed oil and gas in the ordinary course of business)
       and Sales of Borrowing Base Subsidiaries designated pursuant to this
       Section 11.3(iii) by notice of the Parent and the Company to the Global
       Administrative Agent and the Canadian Administrative Agent which have an
       aggregate fair market value (or, with respect to the Sale of a Borrowing
       Base Subsidiary, the amount allocated to such Sale pursuant to Section
       2.3(f) of the U.S. Credit Agreement) not in excess of $50,000,000 for
       all such Sales during any period occurring between successive dates of
       determination of the Global Borrowing Base pursuant to Section 2.3 of
       the U.S. Credit Agreement; provided, however, that concurrently with any
       such Sale the Global Borrowing Base shall be reduced pursuant to Section
       2.3(f) of the U.S. Credit Agreement, and the Company shall make any
       mandatory prepayment required pursuant to Section 4.1(a)(iii) hereof.

              (iv)   Sales of Properties (other than sales of Hydrocarbon
       inventory and severed oil and gas in the ordinary course of business)
       and Sales of Borrowing Base Subsidiaries which are not described in the
       foregoing clause (ii) or (iii) if the Required Lenders under the U.S.
       Credit Agreement and the Required Lenders under this Agreement give
       prior written consent to such Sale in the exercise of their sole
       discretion; provided, however, that concurrently with any such Sale (A)
       the Global Borrowing Base shall be reduced pursuant to Section 2.3(f) of
       the U.S. Credit Agreement, and (B) the Company shall make a mandatory
       prepayment pursuant to Section 4.1(a)(iii) hereof.





                                       36
<PAGE>   43
              (v)    A transfer, conveyance or assignment to the Company or a
       Subsidiary of Properties as a result of a merger or consolidation
       permitted pursuant to Section 11.2.

Anything herein contained to the contrary notwithstanding, the Company will
not, nor will it permit any Borrowing Base Subsidiary to, consummate any Sale
otherwise permitted hereunder if it receives therefor consideration (a) other
than cash, other consideration readily convertible to cash or Hydrocarbon
Interests or (b) which is less than the fair market value of the relevant
property or asset.

       11.4.  Guaranteed Obligations.  The Company will not, nor will it permit
any Borrowing Base Subsidiary to, make or suffer to exist any Guaranteed
Obligation (including, without limitation, any Guaranteed Obligation with
respect to the obligations of a Non-Borrowing Base Subsidiary) in an aggregate
amount for all such Persons and Guaranteed Obligations (considering Guaranteed
Obligations for all such Persons without duplication) as of any date of
determination in excess of $100,000,000, except by endorsement of instruments
for deposit or collection in the ordinary course of business; provided,
however, that any obligation which is a Guaranteed Obligation of the Company or
one or more of its Borrowing Base Subsidiaries for purposes of this Agreement
shall not be Indebtedness of such Person for purposes hereof; and provided,
further, that the term "Guaranteed Obligation" shall not include any obligation
of any Person which constitutes Indebtedness of the Company or any of its
Borrowing Base Subsidiaries.

       11.5.  Liens.  The Company will not, nor will it permit any Borrowing
Base Subsidiary to, create, incur, or suffer to exist any Lien in, of or on (i)
any of the Company's and the Borrowing Base Subsidiaries' consolidated assets,
revenues and properties securing an amount greater than $10,000,000 in the
aggregate for all such Liens or (ii) any of the Properties, except in either
case:

              (a)    Liens for taxes, assessments or governmental charges or
       levies on its property if the same shall not at the time be delinquent
       or thereafter can be paid without penalty, or are being contested in
       good faith and by appropriate proceedings and for which adequate
       reserves in accordance with generally accepted accounting principles
       shall have been set aside on its books.

              (b)    Liens imposed by law, such as carriers', warehousemen's
       and mechanics' liens and other similar liens arising in the ordinary
       course of business which secure obligations not more than 60 days past
       due or which are being contested in good faith by appropriate
       proceedings and for which adequate reserves in accordance with generally
       accepted accounting principles shall have been set aside on its books.

              (c)    Liens arising out of pledges or deposits under worker's
       compensation laws, unemployment insurance, old age pensions, or other
       social security or retirement benefits, or similar legislation.

              (d)    Utility easements, building restrictions and such other
       encumbrances or charges against real property as are of a nature
       generally existing with respect to properties of a similar character and
       which do not in any material way affect the marketability of the same or
       interfere with the use thereof in the business of the Company or the
       Subsidiaries, as the case may be.

              (e)    Liens existing on the date hereof described in Schedule
       11.1 and securing the Indebtedness described in Schedule 11.1 hereto or
       otherwise permitted in connection with Indebtedness of the type
       described in Section 11.1(d) consented to by the Required Lenders in the
       exercise of their sole discretion.

              (f)    Liens arising under operating agreements in respect of
       obligations which are not yet due or which are being contested in good
       faith by appropriate proceedings.

              (g)    Liens reserved in oil, gas and/or mineral leases for bonus
       or rental payments and for compliance with the terms of such leases.





                                       37
<PAGE>   44
              (h)    Liens pursuant to partnership agreements, oil, gas and/or
       mineral leases, farm-out agreements, division orders, contracts for the
       sale, delivery, purchase, exchange, or processing of oil, gas and/or
       other hydrocarbons, unitization and pooling declarations and agreements,
       operating agreements, development agreements, area of mutual interest
       agreements, forward sales of Hydrocarbons, and other agreements which
       are customary in the oil, gas and other mineral exploration, development
       and production business and in the business of processing of gas and gas
       condensate production for the extraction of products therefrom.

              (i)    Liens securing the Indebtedness permitted in connection
       with Section 11.1(i).

              (j)    Liens associated with the pledging of securities of
       Subsidiaries which are not Borrowing Base Subsidiaries.

              (k)    Liens or any rights of distress reserved in or exercisable
       under any lease or sublease to which it is a lessee which secure the
       payment of rent or compliance with the terms of such lease or sublease,
       provided that such rent is not then overdue and it is then in compliance
       in all material respects with such terms.

              (l)    Liens in favor of a government or public authority within
       Canada resulting from the deposit of cash or bonds as security for the
       performance of any of its obligations (other than for the payment of
       money) made in the ordinary course of its business, provided that such
       security is required or requested pursuant to any applicable law, and
       the obligations secured thereby are not overdue (or if overdue are being
       contested by it diligently and in good faith by appropriate
       proceedings).

              (m)    Liens to secure its performance in connection with bids or
       tenders submitted by it, or contracts (other than contracts for the
       payment of money) or leases of real property (other than Capitalized
       Leases) or licenses to which it is a party, all in the ordinary course
       of its business, provided that such performance obligations are not
       overdue (or if overdue are being contested by it diligently and in good
       faith by appropriate proceedings).

       11.6.  Restricted Payments, etc.  On and at all times after the Global
Effective Date, the Company will not and will not permit any of its Borrowing
Base Subsidiaries to make any optional payment or prepayment on, or redemption
of, or redeem, purchase or defease prior to its stated maturity, any
Indebtedness other than Indebtedness incurred under this Agreement or the other
Canadian Loan Documents during the occurrence and continuation of any Debt
Limit Excession or if giving effect to such action would result in a Default or
Unmatured Default; and the Company will not, and will not permit any Borrowing
Base Subsidiary to, make any deposit for any of the foregoing purposes.

       11.7.  Transactions with Affiliates.  The Company will not, and will not
permit any of its Borrowing Base Subsidiaries to, enter into, or cause, suffer
or permit to exist any arrangement or contract with any of its other Affiliates
unless such arrangement is either (i) fair and equitable to the Company or such
Borrowing Base Subsidiary, as the case may be, or (ii) is not of a sort which
would not be entered into by a prudent Person in the position of the Company or
such Borrowing Base Subsidiary with, or which is on terms which are less
favorable than are obtainable from, any Person which is not one of its
Affiliates.

       11.8.  Negative Pledges, etc.  The Company will not, and will not permit
any of its Borrowing Base Subsidiaries to, enter into, on or at any time after
the Global Effective Date, any agreement (excluding this Agreement and any
other Global Loan Document) directly or indirectly prohibiting the creation,
assumption or perfection of any Lien upon its properties, revenues or assets,
whether now owned or hereafter acquired, restricting any loans, advances or
other Investments to or in the Company or any of its Borrowing Base
Subsidiaries, restricting the capitalization of the Company or any Borrowing
Base Subsidiary, restricting the ability of any Borrowing Base Subsidiary to
make dividend payments or other distributions or payments (by way of dividends,
advances, repayments of loans or advances, reimbursements or otherwise) or
restricting the ability of the Company or any Borrowing Base Subsidiary to
amend or otherwise modify this Agreement or any other Canadian Loan Document.





                                       38
<PAGE>   45
       11.9.  Regulation U Acquisitions.  The Company will not, nor will it
permit any Borrowing Base Subsidiary to, use any of the proceeds of the Loans
to purchase or carry any "margin stock" (as defined in Regulation U) or to make
any Acquisition, except any of the following:

              (i)    Acquisitions not involving "margin stock," where such
       Acquisition shall have been approved or consented to by the board of
       directors or similar governing entity of the Person being acquired; or

              (ii)   Acquisitions involving "margin stock" where such
       Acquisitions shall have been approved or consented to by the board of
       directors or similar governing entity of the Person being acquired; or

              (iii)  Acquisitions of not more than 15% of the outstanding
       equity securities of any issuer, whether or not such securities are
       "margin stock";

provided, however, that the amount paid by the Company to consummate all
Acquisitions of the type described in clause (iii) shall not exceed $15,000,000
in the aggregate.  For purposes of this Section 11.9, the merger of the Company
or any Borrowing Base Subsidiary as permitted under Section 11.2 shall be
deemed to be an Acquisition not involving "margin stock."

       11.10. Investments.  The Company will not, and will not permit any of
its Borrowing Base Subsidiaries to, make, incur, assume or suffer to exist any
Investment in any other Person, except:

              (a)    Investments existing on the Global Effective Date and
       identified in Schedule 11.10;

              (b)    Cash Equivalent Investments;

              (c)    without duplication, Investments permitted as Indebtedness
       pursuant to Section 11.1 and Investments permitted as Guaranteed
       Obligations pursuant to Section 11.4;

              (d)    in the ordinary course of business, Investments by the
       Company or any Borrowing Base Subsidiary in any Guarantor or Subsidiary;

              (e)    Investments in any Person in connection with (i) the
       acquisition, exploration, drilling or development of Hydrocarbon
       Interests, or (ii) costs incurred in connection with gathering,
       processing, transporting and marketing production from Hydrocarbon
       Interests;

              (f)    Investments resulting from a merger or consolidation
       permitted pursuant to Section 11.2;

              (g)    Other Investments in an aggregate amount not to exceed
       $30,000,000 during any calendar year;

provided, however, that

              (1)    any Investment which when made complies with the
       requirements of the definition of the term "Cash Equivalent Investment"
       may continue to be held notwithstanding that such Investment if made
       thereafter would not comply with such requirements; and

              (2)    no Investment otherwise permitted by clause (d), (e), (f)
       or (g) shall be permitted to be made if, immediately before or after
       giving effect thereto, any Default would have occurred and be
       continuing.

       11.11. Hedging Contracts.  The Company will not and will not permit any
of its Borrowing Base Subsidiaries to enter into or become obligated under any
contract for sale for future delivery of oil or gas from the Properties located
in Canada, whether or not the subject oil or gas is to be delivered, hedging
contract, forward contract,





                                       39
<PAGE>   46
commodity swap agreement, futures contract or other similar agreement except
for such contracts which in the aggregate do not cover at any time a volume of
oil or gas, as the case may be, equal to more than 75% of the projected
production of oil or gas, as the case may be, from the Properties located in
Canada for the term covered by such contracts.

       11.12. Approval of Consents.  In any instance in this Article XI  where
it is provided that an action may be taken by the Company or a Borrowing Base
Subsidiary only with the approval or consent of the Required Lenders, the
failure by a Canadian Lender to respond to a request for such approval or
consent within 10 Business Days of receipt of a request for such approval or
consent (or such other length of time as specified by the Global Administrative
Agent or the Canadian Administrative Agent in such request) shall be deemed an
approval of, or consent to, such request.


                                  ARTICLE XII

                                    DEFAULTS

       The occurrence of any one or more of the following events shall
constitute a "Default":

       12.1.  Breach of Warranties and Misleading Statements.  Any
representation or warranty made or deemed made pursuant to Article VIII, by or
on behalf of the Company or any Subsidiary to the Canadian Lenders, the Global
Administrative Agent, the Canadian Administrative Agent, the Co-Agent, the
Arrangers or the Engineering Banks under or in connection with this Agreement,
any Loan, any Canadian Loan Document, or any certificate, or, information
delivered in connection with this Agreement, any other Canadian Loan Document
is breached or shall be false, incomplete or incorrect on the date as of which
made or deemed made in any material respect.

       12.2.  Nonpayment of Loans, Fees and other Obligations.  Nonpayment of
principal of any Loan when due; or nonpayment of interest upon any Loan or of
any facility fee or other Obligation under any of the Canadian Loan Documents
within three (3) days after the same becomes due.

       12.3.  Breach of Certain Covenants.  Except as set forth in the
subsequent sentence, the breach by the Company of any of the terms or
provisions of Section 9.2, 9.3, 9.13, or Article X or Article XI.  The breach
by the Company of any of the terms or provisions of (i) Section 11.1 pertaining
to Indebtedness of the type referred to in clause (vii) of the definition of
Indebtedness or (ii) Section 11.10(b), which is not remedied within 3 days of
such occurrence.

       12.4.  Default Under Australian Loan Documents or U.S. Loan Documents.
A "Default" as defined in the Australian Loan Documents or U.S. Loan Documents
occurs; provided that the occurrence of an "Unmatured Default" as defined in
the Australian Loan Documents or U.S. Loan Documents shall constitute an
Unmatured Default under the Canadian Loan Documents.

       12.5.  Non-Compliance with this Agreement.  The breach by the Company
(other than a breach which constitutes a Default under any other Section of
this Article XII) of any of the terms, provisions or covenants of this
Agreement which is not remedied within 30 days after written notice from the
Global Administrative Agent, the Canadian Administrative Agent or any Canadian
Lender.

       12.6.  Cross-Defaults.  Failure of the Company or any Borrowing Base
Subsidiary to pay any Indebtedness in excess of $25,000,000 in aggregate
principal amount when due; or the default by the Company or any Borrowing Base
Subsidiary in the performance of any term, provision or condition contained in
any agreement under which any such Indebtedness was created or is governed, the
effect of which is to cause, or to permit the holder or holders of such
Indebtedness to cause, such Indebtedness to become due prior to its stated
maturity; or any such Indebtedness of the Company or any Borrowing Base
Subsidiary shall be declared to be due and payable or required to be prepaid
(other than by a regularly scheduled payment) prior to the stated maturity
thereof; or the Company or any Borrowing Base Subsidiary shall not pay, or
shall admit in writing its inability to pay, such Indebtedness generally as it
becomes due.





                                       40
<PAGE>   47
       12.7.  Voluntary Dissolution and Insolvency Proceedings and Actions.
The Company or any Subsidiary shall (a) have an order for relief entered with
respect to it under federal or provincial bankruptcy or insolvency laws as now
or hereafter in effect, (b) make an assignment for the benefit of creditors,
(c) apply for, seek, consent to, or acquiesce in, the appointment of a
receiver, custodian, trustee, examiner, liquidator or similar official for it
or any substantial part of its property, (d) institute any proceeding seeking
an order for relief under federal or provincial bankruptcy or insolvency laws
as now or hereafter in effect or seeking to adjudicate it a bankrupt or
insolvent, or seeking dissolution, winding up, liquidation, reorganization,
arrangement, adjustment or composition of it or its debts under any law
relating to bankruptcy, insolvency or reorganization or relief of debtors or
fail to file an answer or other pleading denying the material allegations of
any such proceeding filed against it, (e) take any corporate or partnership
action to authorize or effect any of the foregoing actions set forth in this
Section 12.7 or (f) fail to contest in good faith any appointment or proceeding
described in Section 12.8; provided, however, that if any of the foregoing
shall occur with respect to any Non-Borrowing Base Subsidiary, it shall not
constitute a Default hereunder unless it shall result in a Material Adverse
Effect.

       12.8.  Involuntary Insolvency Proceedings or Dissolution.  Without the
application, approval or consent of the Company or any Subsidiary, a receiver,
trustee, examiner, liquidator or similar official shall be appointed for such
Person or any substantial part of its property, or a proceeding described in
Section 12.7(d) shall be instituted against the Company or any Subsidiary and
such appointment continues undischarged or such proceeding continues
undismissed or unstayed for a period of 30 consecutive days; provided, however,
that if any of the foregoing shall occur with respect to any Non-Borrowing Base
Subsidiary, it shall not constitute a Default hereunder unless it results in a
Material Adverse Effect.

       12.9.  Condemnation.  Any court, government or governmental agency shall
condemn, seize or otherwise appropriate, or take custody or control of all or
any portion of the Properties with a fair market value in excess of $50,000,000
in the aggregate for all such Properties.

       12.10. Judgments.  The Company or any Subsidiary shall fail within 45
days to pay, bond or otherwise discharge any uninsured portion of any judgment
or order for the payment of money in excess of $10,000,000 in the aggregate for
all such judgments and orders, which is not stayed on appeal or is not
otherwise being appropriately contested in good faith; provided, however, that
if any of the foregoing shall occur with respect to any Non-Borrowing Base
Subsidiary, it shall not constitute a Default hereunder unless it results in a
Material Adverse Effect.

       12.11. [Intentionally Omitted].

       12.12. Other Defaults Under Canadian Loan Documents.  The occurrence of
any default by any party to the Canadian Loan Documents (other than any Agent
or Lender) under any Canadian Loan Document (other than this Agreement or the
Notes) or the breach of any of the terms or provisions by any party to the
Canadian Loan Documents (other than any Agent or Lender) of any Canadian Loan
Document (other than this Agreement or the Notes) which default or breach is
not remedied within 30 days of such occurrence.

       12.13. Failure of Canadian Loan Documents.  Any Canadian Loan Document
shall fail to remain in full force or effect or shall be declared null and
void, or any action shall be taken to discontinue or to assert the invalidity
or unenforceability of any Canadian Loan Document.

       12.14. Change in Control.  Any Change in Control shall occur.





                                       41
<PAGE>   48
                                  ARTICLE XIII

             ACCELERATION, WAIVERS, AMENDMENTS, REMEDIES; RELEASES

       13.1.  Acceleration.  If any Default described in Section 12.7 or 12.8
occurs with respect to the Company, (a) the obligations of the Canadian Lenders
to make Loans hereunder shall automatically terminate, (b) the Commitments of
each of the Canadian Lenders shall terminate and the Obligations shall
immediately become due and payable without any election or action on the part
of any Agent or any Canadian Lender and without presentment, demand, protest or
notice of any kind, including, without limitation, notice of acceleration or
notice of intent to accelerate, all of which the Company and each Guarantor
each hereby expressly waives, and (c) the Agents and the Canadian Lenders and
each of them shall be able to exercise any rights available to it or them under
the Canadian Loan Documents, or by law.  If any other Default occurs, (x) the
Required Lenders may terminate or suspend the obligations of the Canadian
Lenders to make Loans hereunder, or reduce the Commitment of each of the
Canadian Lenders to zero and declare the Obligations to be due and payable, or
both, whereupon the Obligations shall become immediately due and payable,
without presentment, demand, protest or notice of any kind, including without
notice of acceleration or notice of intent to accelerate, all of which the
Company and each Guarantor each hereby expressly waives, and (y) the Agents and
the Canadian Lenders and each of them shall be able to exercise any rights
available to it or them under the Canadian Loan Documents, the Parent Guaranty,
any Guaranty or by law.  The Canadian Administrative Agent hereby agrees, at
the written direction of the Required Lenders, subject to the provisions of
Article XV, to exercise any of the foregoing rights available to it.

       13.2.  Amendments.  Subject to the provisions of this Article XIII, the
Required Lenders (or the Canadian Administrative Agent with the consent in
writing of the Required Lenders) and the Company may enter into agreements
supplemental hereto for the purpose of adding or elucidating any provisions to
the Canadian Loan Documents or changing in any manner the rights and remedies
of the Canadian Lenders or the Company hereunder or waiving any Default
hereunder; provided, however, that no such supplemental agreement shall,
without the consent of each Canadian Lender affected thereby:

              (a)    Extend the maturity of any Loan, Note or payment under a
       Guaranty or the Parent Guaranty, or reduce the principal amount of any
       of them, or reduce the rate or extend the time of payment of interest or
       fees thereon.

              (b)    Reduce the percentage specified in the definition of
       Required Lenders.

              (c)    Extend the Termination Date or reduce the amount or extend
       the payment date for, the mandatory payments required under Section 4.1
       or increase the amount of the Commitment of any Canadian Lender
       hereunder or permit the Company to assign its rights or obligations
       under this Agreement or under any other Canadian Loan Document.

              (d)    Amend this Section 13.2.

No amendment of any provision of this Agreement relating to any Agent shall be
effective without the written consent of such Agent.  The Canadian
Administrative Agent may waive payment of the fee required under Section
17.3(b) without obtaining the consent of any of the Canadian Lenders.

       13.3.  Preservation of Rights.  All remedies contained in the Canadian
Loan Documents or afforded by law shall be cumulative and all shall be
available to the Agents and the Canadian Lenders until the Obligations have
been paid in full.  No delay or omission of the Canadian Lenders, the Agents or
any of them to exercise any right under the Canadian Loan Documents shall
impair such right or be construed to be a waiver of any Default or an
acquiescence therein, and the making of a Loan notwithstanding the existence of
a Default or the inability of the Company to satisfy the conditions precedent
to such Loan shall not constitute any waiver or acquiescence.  Any single or
partial exercise of any such right shall not preclude other or further exercise
thereof or the exercise of any other right, and no waiver, amendment or other
variation of the terms, conditions or provisions of the Canadian Loan Documents
whatsoever shall





                                       42
<PAGE>   49
be valid unless in writing signed by the Canadian Lenders and the Agents
required pursuant to Section 13.2, and then only to the extent specifically set
forth in such writing.


                                  ARTICLE XIV

                               GENERAL PROVISIONS

       14.1.  [Intentionally Omitted].

       14.2.  Governmental Regulation.  Anything contained in this Agreement to
the contrary notwithstanding, no Canadian Lender shall be obligated to extend
credit to the Company in violation of any limitation or prohibition provided by
any applicable statute or regulation.

       14.3.  Taxes.  Any taxes (excluding income taxes) or other similar
assessments or charges payable or ruled payable by any governmental authority
in respect of the Canadian Loan Documents shall be paid by the Company,
together with interest and penalties, if any.

       14.4.  Headings.  Article and section headings in the Canadian Loan
Documents are for convenience of reference only, and shall not govern the
interpretation of any of the provisions of the Canadian Loan Documents.

       14.5.  Entire Agreement.  The Canadian Loan Documents embody the entire
agreement and understanding among the Company, the Agents and the Canadian
Lenders and supersede all prior agreements and understandings among the
Company, the Agents and the Canadian Lenders relating to the subject matter
thereof.

       14.6.  Several Obligations.  The respective obligations of the Canadian
Lenders hereunder are several and not joint and no Canadian Lender shall be the
partner or agent of any other (except to the extent to which an Agent is
authorized to act as such).  The failure of any Canadian Lender to perform any
of its obligations hereunder shall not relieve any other Canadian Lender from
any of its obligations hereunder.  This Agreement is not intended to, and shall
not be construed so as to, confer any right or benefit upon any Person other
than the parties to this Agreement and their respective successors and assigns.


       14.7.  Reimbursement of Costs and Expenses; Indemnification.

       (a)    Reimbursement of Costs and Expenses.  The Company shall reimburse
each Agent for any reasonable costs and out-of-pocket expenses (including fees
and expenses of consultants and legal fees and expenses for such Agent (on a
solicitor and his own client basis)) paid or incurred by such Agent in
connection with the preparation, review, execution, delivery, amendment,
modification and administration of the Canadian Loan Documents including,
without limitation, the fees incurred by such Agent in connection with its
initial evaluation of the Properties.  The Company shall reimburse each Agent
and the Canadian Lenders for any reasonable costs and out-of-pocket expenses
(including legal fees and expenses (on a solicitor and his own client basis)
for the Agent and the Canadian Lenders) paid or incurred by any Agent or any
Canadian Lender in connection with the collection and enforcement of the
Canadian Loan Documents.

       (b)    Indemnification.  In consideration of the execution and delivery
of this Agreement by each Canadian Lender and the extension of the Commitments,
the Company hereby indemnifies, exonerates and holds each Agent and each
Canadian Lender, and their respective directors, agents, officers and employees
("Indemnified Persons") free and harmless from and against any and all losses,
claims, damages, penalties, judgments, liabilities, actions, suits, costs and
expenses (including, without limitation, all expenses of litigation or
preparation therefor whether or not any Agent or any Canadian Lender or any
Indemnified Person is a party thereto and all other legal fees and
disbursements (on a solicitor and his own client basis)) ("Claims") which any
of them may pay or incur as a result of, arising out of, or relating to,





                                       43
<PAGE>   50
              (i)    this Agreement, the other Canadian Loan Documents, the
       transactions contemplated hereby or thereby;

              (ii)   the direct or indirect application or proposed application
       of the proceeds of any Loan hereunder;

              (iii)  any transaction financed or to be financed in whole or in
       part, directly or indirectly, with the proceeds of any Loan;

              (iv)   any investigation, litigation or proceeding related to any
       acquisition or proposed acquisition by the Company or any of its
       Subsidiaries of all or any portion of the stock or assets of any Person,
       whether or not any Agent or any Canadian Lender is party thereto;

              (v)    any investigation, litigation or proceeding related to any
       environmental cleanup, audit, compliance or other matter relating to any
       Environmental Law or the condition of any facility or property owned,
       leased or operated by the Company or any Subsidiary;

              (vi)   the presence on or under, or the escape, seepage, leakage,
       spillage, discharge, emission, discharging or Release from, any facility
       or property owned, leased or operated by the Company or any Subsidiary
       thereof of any Hazardous Material (including any losses, liabilities,
       damages, injuries, costs, expenses or claims asserted or arising under
       any Environmental Law), regardless of whether caused by, or within the
       control of, the Company or such Subsidiary;

              (vii)  any misrepresentation, inaccuracy or any breach in or of
       Section 8.19 or Section 9.12; or

              (viii) any investigation, litigation or proceeding related to any
       Investment by the Company or any of its Subsidiaries in any Person,
       whether or not any Agent or any Canadian Lender is party thereto;

(the foregoing collectively the "Indemnified Liabilities"), except to the
extent that a final order of a court of competent jurisdiction finds that such
Indemnified Liability arises solely from such Indemnified Person's gross
negligence or wilful misconduct.  If and to the extent that the foregoing
undertaking may be unenforceable for any reason, the Company hereby agrees to
make the maximum contribution to the payment and satisfaction of each of the
Indemnified Liabilities which is permissible under applicable law.  The
obligations of the Company under this Section 14.7 shall survive the
termination of this Agreement or any non-assumption of this Agreement in a
bankruptcy or similar proceeding.  The Company shall be obligated to indemnify
the Indemnified Persons for all Claims regardless of whether the Company had
knowledge of the facts and circumstances giving rise to such Claims.

       14.8.  Numbers of Documents.  All statements, notices, closing
documents, and requests hereunder shall be furnished to the Canadian
Administrative Agent with sufficient counterparts so that the Canadian
Administrative Agent may furnish one to each of the Canadian Lenders and each
of the Agents.

       14.9.  Severability of Provisions.  Any provision in any Canadian Loan
Document that is held to be inoperative, unenforceable, or invalid in any
jurisdiction shall, as to that jurisdiction, be inoperative, unenforceable, or
invalid without affecting the remaining provisions in that jurisdiction or the
operation, enforceability, or validity of that provision in any other
jurisdiction, and to this end the provisions of all Canadian Loan Documents are
declared to be severable.

       14.10. Nonliability of Canadian Lenders.  The relationship between the
Company on the one hand and the Canadian Lenders and the Agents on the other
hand shall be solely that of borrower and lender.  None of the Agents nor any
Canadian Lender shall have any fiduciary responsibilities to the Company or any
of its Subsidiaries or Affiliates.  None of the Agents nor any Canadian Lender
undertakes any responsibility to the Company or any of its Subsidiaries or





                                       44
<PAGE>   51
Affiliates to review or inform the Company of any matter in connection with any
phase of the Company's or such Subsidiary's or Affiliate's business or
operations.

       14.11. CHOICE OF LAW.  THE CANADIAN LOAN DOCUMENTS (OTHER THAN THOSE
CONTAINING A CONTRARY EXPRESS CHOICE OF LAW PROVISION) SHALL BE CONSTRUED IN
ACCORDANCE WITH THE INTERNAL LAWS (AND NOT THE LAW OF CONFLICTS) OF THE
PROVINCE OF ALBERTA AND OF CANADA APPLICABLE THEREIN.

       14.12. CONSENT TO JURISDICTION.  ANY LITIGATION BASED HEREON, OR ARISING
OUT OF, UNDER, OR IN CONNECTION WITH, THIS AGREEMENT OR ANY OTHER CANADIAN LOAN
DOCUMENT, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, STATEMENTS (WHETHER
VERBAL OR WRITTEN) OR ACTIONS OF ANY AGENT, THE CANADIAN LENDERS OR THE COMPANY
SHALL BE BROUGHT AND MAINTAINED EXCLUSIVELY IN THE COURTS OF THE PROVINCE OF
ALBERTA; PROVIDED, HOWEVER, THAT ANY SUIT SEEKING ENFORCEMENT AGAINST ANY
COLLATERAL OR OTHER PROPERTY MAY BE BROUGHT, AT ANY AGENT'S OPTION, IN THE
COURTS OF ANY JURISDICTION WHERE SUCH COLLATERAL OR OTHER PROPERTY MAY BE
FOUND.  THE COMPANY HEREBY EXPRESSLY AND IRREVOCABLY SUBMITS TO THE
JURISDICTION OF THE COURTS OF THE PROVINCE OF ALBERTA FOR THE PURPOSE OF ANY
SUCH LITIGATION AS SET FORTH ABOVE AND IRREVOCABLY AGREES TO BE BOUND BY ANY
JUDGMENT RENDERED THEREBY IN CONNECTION WITH SUCH LITIGATION.  THE COMPANY
FURTHER IRREVOCABLY CONSENTS TO THE SERVICE OF PROCESS BY REGISTERED MAIL,
POSTAGE PREPAID, OR BY PERSONAL SERVICE WITHIN OR WITHOUT THE PROVINCE OF
ALBERTA.  THE COMPANY HEREBY EXPRESSLY AND IRREVOCABLY WAIVES, TO THE FULLEST
EXTENT PERMITTED BY LAW, ANY OBJECTION WHICH IT MAY HAVE OR HEREAFTER MAY HAVE
TO THE LAYING OF VENUE OF ANY SUCH LITIGATION BROUGHT IN ANY SUCH COURT
REFERRED TO ABOVE AND ANY CLAIM THAT ANY SUCH LITIGATION HAS BEEN BROUGHT IN AN
INCONVENIENT FORUM.  TO THE EXTENT THAT THE COMPANY HAS OR HEREAFTER MAY
ACQUIRE ANY IMMUNITY FROM JURISDICTION OF ANY COURT OF FROM ANY LEGAL PROCESS
(WHETHER THROUGH SERVICE OR NOTICE, ATTACHMENT PRIOR TO JUDGMENT, ATTACHMENT IN
AID OF EXECUTION OR OTHERWISE) WITH RESPECT TO ITSELF OR ITS PROPERTY, THE
COMPANY HEREBY IRREVOCABLY WAIVES SUCH IMMUNITY IN RESPECT OF ITS OBLIGATIONS
UNDER THIS AGREEMENT AND THE OTHER CANADIAN LOAN DOCUMENTS.

       14.13. Confidentiality.  Each Canadian Lender and each Agent agrees to
hold any confidential information which it may receive from the Company
pursuant to this Agreement in confidence in accordance with the provisions set
forth in Exhibit G hereto.  In addition to the disclosures permitted in such
provisions, the Canadian Lenders and the Agents each shall be permitted to make
disclosures of such information in accordance with Section 17.4.


                                   ARTICLE XV

              THE AGENTS, THE ARRANGERS AND THE ENGINEERING BANKS

       15.1.  Appointment of Agents.  First Chicago is hereby appointed Global
Administrative Agent hereunder and under each other Canadian Loan Document,
Bank of Montreal is hereby appointed Canadian Administrative Agent hereunder
and under each other Canadian Loan Document, First Chicago Capital Markets,
Inc. is hereby appointed as an Arranger hereunder and under each other Canadian
Loan Document, Chase Securities Inc. is hereby appointed as an Arranger
hereunder and under each other Canadian Loan Document, and each of First
Chicago and Chase is appointed as an Engineering Bank hereunder and each of the
Canadian Lenders irrevocably authorizes each such Agent to act in such
capacities.  Each Agent agrees to act as such upon the express conditions
contained in this Article XV.  No Agent shall have a fiduciary relationship in
respect of any Canadian Lender by reason of this Agreement or any of the other
Canadian Loan Documents.





                                       45
<PAGE>   52
       15.2.  Powers.  Each Agent shall have and may exercise such powers under
this Agreement and the other Canadian Loan Documents as are specifically
delegated to it by the terms of each thereof, together with such powers as are
reasonably incidental thereto.  None of the Agents shall have implied duties to
the Canadian Lenders, or any obligation to the Canadian Lenders to take any
action thereunder except any action by an Agent specifically provided by the
Canadian Loan Documents to be taken by such Agent.

       15.3.  General Immunity.  No Agent nor any of its respective directors,
officers, agents or employees shall be liable to any Canadian Lender or any of
the other Agents for any action taken or omitted to be taken by it or them
hereunder or under any other Canadian Loan Document or in connection herewith
or therewith except for its or their own gross negligence or wilful misconduct
as established by final order of a court of competent jurisdiction.

       15.4.  No Responsibility for Loans, Recitals, etc.  No Agent nor any of
its respective directors, officers, agents or employees shall be responsible
for or have any duty to ascertain, inquire into, or verify (i) any statement,
warranty or representation made in connection with any Canadian Loan Document
or any borrowing hereunder; (ii) the performance or observance of any of the
covenants or agreements of any obligor under any Canadian Loan Document; (iii)
the satisfaction of any condition specified in Article VII, except receipt by
an Agent of items required to be delivered to such Agent unless such condition
shall have been waived in accordance with Section 13.2; or (iv) the validity,
effectiveness or genuineness of any Canadian Loan Document or any other
agreement, instrument or writing furnished in connection therewith.

       15.5.  Action on Instructions of Canadian Lenders.  Each Agent shall in
all cases be fully protected in acting, or in refraining from acting, hereunder
and under any other Canadian Loan Document in accordance with written
instructions signed by the Required Lenders, and such instructions and any
action taken or failure to act pursuant thereto shall be binding on all of the
Canadian Lenders, the other Agents and all holders of Notes.

       15.6.  Employment of Agents and Counsel.  Each Agent may execute any of
its duties as Agent hereunder and under any other Canadian Loan Document by or
through employees, agents, and attorneys-in-fact and shall not be answerable to
the Canadian Lenders, except as to money or securities received by it or its
authorized agents, for the default or misconduct of any such agents or
attorneys-in-fact selected by it with reasonable care.  Each Agent shall be
entitled to advice of counsel concerning all matters pertaining to the agency
hereby created and its respective duties hereunder and under any other Canadian
Loan Document.

       15.7.  Reliance on Documents; Counsel.  Each Agent shall be entitled to
rely upon any Note, notice, consent, certificate, affidavit, letter, telegram,
statement, paper or document believed by it to be genuine and correct and to
have been signed or sent by the proper person or persons, and, in, respect to
legal matters, upon the opinion of counsel selected by such Agent, which
counsel may be employees of the Agents or any of them.

       15.8.  Reimbursement and Indemnification.  Each Canadian Lender agrees
to reimburse and indemnify each of the Canadian Administrative Agent, the
Global Administrative Agent, each Arranger and each Engineering Bank ratably in
proportion to such Canadian Lender's Aggregate Commitments, (i) for any amounts
(other than principal or interest) not reimbursed by the Company or any
Guarantor for which such Agent is entitled to reimbursement by the Company
under the Canadian Loan Documents, and (ii) for any liabilities, obligations,
losses, damages, penalties, actions, judgments, suits, costs, expenses or
disbursements of any kind and nature whatsoever which may be imposed on,
incurred by or asserted against such Agent in any way relating to or arising
out of the Canadian Loan Documents or any other document delivered in
connection therewith or the transactions contemplated thereby, or the
enforcement of any of the terms thereof or of any such other documents,
provided that no Canadian Lender shall be so liable to the extent any of the
foregoing is found by a final order of a court of competent jurisdiction to
have arisen solely from such Agent's gross negligence or willful misconduct.

       15.9.  Rights as a Canadian Lender.  With respect to its Commitments,
Loans made by it and the Notes issued to it, each Agent shall have the same
rights and powers hereunder and under each other Canadian Loan Document as any
Canadian Lender and may exercise the same as though it did not hold such role,
and the term "Canadian Lender"





                                       46
<PAGE>   53
or "Canadian Lenders" shall, unless the context otherwise indicates, include
each of them in its individual capacity.  In addition to, and not by way of
limitation of the rights set forth in Section 15.2 and this Section 15.9, each
Agent may accept deposits from, lend money to, and generally engage in any kind
of banking or trust business with the Company or any Subsidiary or any other
Affiliate of the Company as if it did not hold such role.

       15.10. Canadian Lender Credit Decision.  Each Canadian Lender
acknowledges that it has, independently and without reliance upon any Agent or
any other Canadian Lender and based on the financial statements prepared by the
Parent and such other documents and information as it has deemed appropriate,
made its own credit analysis and decision to enter into this Agreement and the
other Canadian Loan Documents.  Each Canadian Lender also acknowledges that it
will, independently and without reliance upon any Agent or any other Canadian
Lender 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 this Agreement and the other Canadian Loan Documents.

       15.11. Certain Successor Agents.  Any Agent may resign at any time by
giving thirty (30) days' prior written notice thereof to the Canadian Lenders
and the Company.  Upon any such resignation, the Company shall, if no Default
or Unmatured Default has occurred and is continuing, have the right (subject to
the consent of the Required Lenders) to appoint, on behalf of the Company and
the Canadian Lenders, a Canadian Lender as a successor Agent.  If no successor
Agent shall have been so appointed by the Company and shall have accepted such
appointment within thirty (30) days after the retiring Agent's giving notice of
resignation or if a Default or Unmatured Default has occurred and is
continuing, then the retiring Agent may appoint, on behalf of the Company and
the Canadian Lenders, a Canadian Lender as a successor Agent; provided,
however, that the Company may, within the one year period following the
appointment of a successor Agent, and upon thirty (30) days' written notice to
the Canadian Lenders, remove the successor Agent and appoint a successor Agent
acceptable to the Company (subject to the consent of the Required Lenders).
Upon the acceptance of any appointment as Agent hereunder by a successor Agent,
such successor Agent shall thereupon succeed to and become vested with all the
rights, powers, privileges and duties of the retiring Agent, and the retiring
Agent shall be discharged from its duties and Obligations (but not any
liability arising from its gross negligence or wilful misconduct as established
by a final order of a court of competent jurisdiction) hereunder and under the
other Canadian Loan Documents.  After any retiring Agent's resignation
hereunder as Agent, the provisions of this Article XV shall continue in effect
for its benefit in respect of any actions taken or omitted to be taken by it
while it was acting as an Agent hereunder and under the other Canadian Loan
Documents.


                                  ARTICLE XVI

                            SETOFF; RATABLE PAYMENTS

       16.1.  Setoff.  In addition to, and without limitation of, any rights of
the Canadian Lenders under applicable law, if the Company becomes insolvent,
however evidenced, or any Default or Unmatured Default occurs, any indebtedness
from any Canadian Lender to the Company (including all account balances,
whether provisional or final and whether or not collected or available) may be
offset and applied toward the payment of the Obligations owing to such Canadian
Lender, whether or not the Obligations, or any part hereof, shall then be due
and payable.

       16.2.  Ratable Payments.  If any Canadian Lender, whether by setoff or
otherwise, has payment made to it upon its Loans in a greater proportion than
it would have received pursuant to an allocation using the method set forth in
Section 4.2 or 4.3, such Canadian Lender agrees, promptly upon demand, to
purchase a portion of the Loans held by the other Canadian Lenders so that
after such purchase each Canadian Lender will hold its ratable proportion of
such type of Loans.  If any Canadian Lender, whether in connection with setoff
or amounts which might be subject to setoff or otherwise, receives collateral
or other protection for its Obligations or such amounts which may be subject to
set off, such Canadian Lender agrees, promptly upon demand, to take such action
necessary such that all Canadian Lenders share in the benefits of such
collateral ratably in proportion to the Obligations owing to each of them.  In
case any such payment is disturbed by legal process, or otherwise, appropriate
further adjustments shall be made.





                                       47
<PAGE>   54
                                  ARTICLE XVII

               BENEFIT OF AGREEMENT; ASSIGNMENTS; PARTICIPATIONS

       17.1.  Successors and Assigns.  The terms and provisions of the Canadian
Loan Documents shall be binding upon and inure to the benefit of the Company,
the Agents and the Canadian Lenders and their respective successors and
assigns, except that the Company shall not have the right to assign its rights
or obligations under the Canadian Loan Documents and any assignment by any
Canadian Lender must be made in compliance with Section 17.3.  The Canadian
Administrative Agent may treat the payee of any Note as the owner thereof for
all purposes hereof unless and until such payee complies with Section 17.3 in
the case of an assignment thereof or, in the case of any other transfer, a
written notice of the transfer is filed with such Agent.  Any assignee or
transferee of a Note agrees by acceptance thereof to be bound by all the terms
and provisions of the Canadian Loan Documents.  Any request, authority or
consent of any Person, who at the time of making such request or giving such
authority or consent is the holder of any Note, shall be conclusive and binding
on any subsequent holder, transferee or assignee of such Note or of any Note or
Notes issued in exchange therefor.

       17.2.  Participations.

       (a)    Any Canadian Lender, in the ordinary course of its business and
in accordance with applicable law, at any time may sell to one or more banks or
other entities organized under the laws of and resident in Canada for purposes
of the Income Tax Act (Canada) ("Participants") participating interests in any
Loan owing to such Canadian Lender, any Note held by such Canadian Lender, any
Commitment of such Canadian Lender or any other interest of such Canadian
Lender under the Canadian Loan Documents.  In the event of any such sale by a
Canadian Lender of participating interests to a Participant, such Canadian
Lender's Obligations under the Canadian Loan Documents shall remain unchanged,
such Canadian Lender shall remain solely responsible to the other parties
hereto for the performance of such obligations, such Canadian Lender shall
remain the holder of any such Note or Obligation for all purposes under the
Canadian Loan Documents, and the Company and the Agents shall continue to deal
solely and directly with such Canadian Lender in connection with such Canadian
Lender's rights and obligations under the Canadian Loan Documents.

       (b)    Each Canadian Lender shall retain the sole right to approve,
without the consent of any Participant, any amendment, modification or waiver
of any provision of the Canadian Loan Documents other than any amendment,
modification or waiver with respect to any Loan or Commitment in which such
Participant has an interest which forgives principal, interest or fees or
reduces the interest rate or fees payable with respect to any such Loan or
Commitment, postpones any date fixed for any regularly-scheduled payment of
principal of, or interest or fees on, or reimbursement obligation with respect
to, any such Loan or Commitment, releases any guarantor of any such Obligation.

       (c)    The Company agrees that each Participant shall be deemed to have
the right of setoff provided in Section 16.1 in respect of its participating
interest in amounts owing under the Canadian Loan Documents to the same extent
as if the amount of its participating interest were owing directly to it as a
Canadian Lender under the Canadian Loan Documents, provided that each Canadian
Lender shall retain the right of setoff provided in Section 16.1 with respect
to the amount of participating interests sold to each Participant.  The
Canadian Lenders agree to share with each Participant, and each Participant, by
exercising the right of setoff provided in Section 16.1, agrees to share with
each Canadian Lender, any amount received pursuant to the exercise of its right
of setoff, such amounts to be shared in accordance with Section 16.2 as if each
Participant were a Canadian Lender.  The Company also agrees that each
Participant shall be entitled to the benefits of Sections 6.1 and 6.3 with
respect to its participation in the Commitments or the Loans outstanding from
time to time; provided, that no Participant shall be entitled to receive any
greater amount pursuant to such Sections than the transferor Canadian Lender
would have been entitled to receive in respect of the amount of the
participation transferred by such transferor Canadian Lender to such
Participant had no such transfer occurred.





                                       48
<PAGE>   55
       17.3.  Assignments.

       (a)    Any Canadian Lender may, in the ordinary course of its business
and in accordance with applicable law, at any time assign to one or more banks
or other entities which are organized under the laws of and are residents in
Canada for purposes of the Income Tax Act (Canada) ("Purchasers") all or any
part of its rights and obligations under the Canadian Loan Documents subject to
a minimum of $5,000,000 or such lesser amount as may be agreed to by the
Company; provided that with respect to any Purchaser which is not an Affiliate
of such assigning Canadian Lender, such assignment shall require the consent of
the Company, which consent of the Company shall not be unreasonably withheld or
delayed.  Such assignment shall be substantially in the form of Exhibit D
hereto.  The consent of the Canadian Administrative Agent shall also be
required prior to an assignment becoming effective with respect to a Purchaser
which is not organized under the laws of and resident in Canada for purposes of
the Income Tax Act (Canada).  All such consents shall be substantially in the
form attached as Exhibits "D-II" or "D-III" to Exhibit D hereto and shall not
be unreasonably withheld.

       (b)    Upon (i) delivery to the Canadian Administrative Agent of a
notice of assignment, substantially in the form attached as Exhibit "D-I" to
Exhibit D hereto (a "Notice of Assignment"), together with any consents
required by Section 17.3.(a), and (ii) payment of a $3,000 fee to the Canadian
Administrative Agent for processing such assignment, such assignment shall
become effective on the effective date specified in such Notice of Assignment;
provided, however, that any amounts paid by the Company to, or for the benefit
of, the assigning Canadian Lender, on or before the execution date of the
assignment, if such date is later than the effective date of the assignment,
shall be deemed paid to and for the benefit of the Purchaser for all purposes.
On and after the effective date of such assignment, such Purchaser shall for
all purposes be a Canadian Lender, party to this Agreement and any other
Canadian Loan Document executed by the Canadian Lenders, and shall have all the
rights and obligations of a Canadian Lender under the Canadian Loan Documents,
including, without limitation, the Intercreditor Agreement, to the same extent
as if it were an original party hereto, shall be deemed a Canadian Lender for
all purposes of the Canadian Loan Documents, including, without limitation, the
Intercreditor Agreement, and no further consent or action by the Company, the
Canadian Lenders or any Agent shall be required to release the transferor
Canadian Lender, with respect to the percentages of the Commitment, and the
Loans assigned to such Purchaser and the transferor Canadian Lender shall
henceforth be so released, and each reference herein and in the other Canadian
Loan Documents, including, without limitation, the Intercreditor Agreement, to
the transferor Canadian Lender shall thereafter be deemed a reference to the
Purchaser for all purposes.  Upon the consummation of any assignment to a
Purchaser pursuant to this Section 17.3(b), the Company shall issue replacement
Notes to such transferor Canadian Lender and shall issue new Notes or, as
appropriate, replacement Notes, to such Purchaser, in each case in principal
amounts reflecting their respective Commitments, as adjusted pursuant to such
assignment.

       17.4.  Dissemination of Information.  The Company authorizes each Agent
and each Canadian Lender to disclose to any Participant or Purchaser or any
other Person acquiring an interest in the Canadian Loan Documents by operation
of law (each a "Transferee") and any prospective Transferee any and all
information in such Canadian Lender's possession concerning the
creditworthiness of the Company and the Subsidiaries, provided that such
Transferee and prospective Transferee agrees in writing to be bound by Section
14.13 of this Agreement.


                                 ARTICLE XVIII

                                    NOTICES

       18.1.  Giving Notice.  Except as otherwise permitted by Section 3.7 with
respect to borrowing notices, all notices and other communications provided to
any party hereto under this Agreement or any other Canadian Loan Document shall
be in writing or by telex or by facsimile and addressed or delivered to such
party at its address set forth below its signature hereto or at such other
address as may be designated by such party in a notice to the other parties.
Any notice, if mailed and properly addressed with postage prepaid, shall be
deemed given when received; any notice, if transmitted by telex or facsimile,
shall be deemed given when transmitted (answerback confirmed in the case of
telexes).





                                       49
<PAGE>   56
       18.2.  Change of Address.  The Company, each Agent, and each Canadian
Lender may change the address for service of notice upon it by a notice in
writing to the other parties hereto.


                                  ARTICLE XIX

                                  COUNTERPARTS

       This Agreement may be executed in any number of counterparts, all of
which taken together shall constitute one agreement, and any of the parties
hereto may execute this Agreement by signing any such counterpart.  This
Agreement shall be effective when it has been executed by the Company, the
Agents and the Canadian Lenders and each party has notified the Canadian
Administrative Agent and the Global Administrative Agent, by telex, facsimile
or telephone, that it has taken such action.


                                   ARTICLE XX

                               NO ORAL AGREEMENTS

       THIS WRITTEN AGREEMENT, THE NOTES, AND THE OTHER CANADIAN LOAN DOCUMENTS
REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED
BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE
PARTIES.  THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG THE PARTIES.



                      [SIGNATURES BEGIN ON FOLLOWING PAGE]





                                       50
<PAGE>   57
       IN WITNESS WHEREOF, the Company, the Canadian Lenders and the Agents
have executed this Agreement as of the date first above written.


                                     APACHE CANADA LTD.


                                     By: /s/ APACHE CANADA LTD.
                                        ----------------------------------------
                                     Name:   Matthew W. Dundrea
                                     Title:  Treasurer

                                     Address:   Apache Canada Ltd.
                                                c/o Apache Corporation
                                                2000 Post Oak Boulevard
                                                Suite 100
                                                Houston, Texas  77056-4400

                                     Attention: Matthew W. Dundrea, Treasurer

                                     Telephone: (713) 296-6640
                                     Facsimile: (713) 296-6458


                                     with a copy to:

                                     Zurab S. Kobiashvili
                                     Vice President and General Counsel
                                     2000 Post Oak Boulevard, Suite 100
                                     Houston, Texas  77056-4400

                                     Telephone: (713) 296-6204
                                     Facsimile: (713) 296-6458





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 1
<PAGE>   58

                                     FIRST CHICAGO CAPITAL MARKETS, INC.,
                                       as Arranger


                                    By: /s/ FIRST CHICAGO CAPITAL MARKETS, INC. 
                                         --------------------------------------
                                    Name:
                                    Title:

                                    Address:   One First National Plaza
                                               Chicago, Illinois  60670

                                    Attention: Mr. Thomas E. Both

                                    Telephone: (312) 732-7268
                                    Facsimile: (312) 732-2038





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 2
<PAGE>   59

                                     CHASE SECURITIES INC., as Arranger


                                     By: /s/ CHASE SECURITIES INC. 
                                          --------------------------------------
                                     Name:   Tod Benton
                                     Title:  Managing Director

                                     Address:   707 Travis
                                                5th Floor North
                                                Houston, Texas 77002

                                     Attention: Lori Vetters

                                     Telephone: (713) 216-4332
                                     Facsimile: (713) 216-4117





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 3
<PAGE>   60

                                     THE FIRST NATIONAL BANK OF CHICAGO,
                                      as Global Administrative Agent and
                                      Engineering Bank


                                     By:  /s/ THE FIRST NATIONAL BANK OF CHICAGO
                                          --------------------------------------
                                     Name:   W. Walter Green
                                     Title:  Attorney-in-fact for The First
                                             National Bank of Chicago

                                     Address:   One First National Plaza
                                                Chicago, Illinois  60670

                                     Attention: W. Walter Green, III,
                                                Petroleum and Mining Division
                                                Suite 0363

                                     Telephone: (312) 732-7235
                                     Facsimile: (312) 732-3055


                                     with a copy to:

                                                Syndications and
                                                Placements/Agency
                                                Suite 0353, 15th Floor
                                                One First National Plaza
                                                Chicago, IL  60670

                                     Attention: Mr. Thomas E. Both

                                     Telephone: (312) 732-7268
                                     Facsimile: (312) 732-2038





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 4
<PAGE>   61

                                     BANK OF MONTREAL, as Canadian
                                     Administrative Agent


                                     By:  /s/ BANK OF MONTREAL 
                                          --------------------------------------
                                     Name:
                                     Title:

                                     Address:   24th Floor, 1st Canadian Place
                                                Toronto, Ontario
                                                Canada M5X 1A1

                                     Attention: Paul Montgomery

                                     Telephone: (416) 867-7110
                                     Facsimile: (416) 867-5938





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 5
<PAGE>   62

                                     THE CHASE MANHATTAN BANK, as Engineering
                                     Bank


                                     By: /s/ THE CHASE MANHATTAN BANK
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   270 Park Avenue
                                                Energy Portfolio, 10th Floor
                                                New York, New York 10017-2070

                                     Attention: Ronald Potter

                                     Telephone: (212) 270-2057
                                     Facsimile: (212) 270-3860


                                     with a copy to:

                                     Lori Vetters
                                     The Chase Manhattan Bank
                                     707 Travis
                                     5th Floor North
                                     Houston, Texas 77002

                                     Telephone: (713) 216-4332
                                     Facsimile: (713) 216-4117





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 6
<PAGE>   63

Commitments                          BANK OF MONTREAL, as a Canadian Lender
- -----------                                                                

$25,000,000
                                     By:  /s/ BANK OF MONTREAL 
                                          --------------------------------------
                                     Name:
                                     Title:

                                     Address:   24th Floor FCC
                                                350 7th Avenue S.W.
                                                Calgary, Alberta
                                                Canada T2P 3N9

                                     Attention: John Haylock

                                     Telephone: (403) 234-3741
                                     Facsimile: (403) 234-3644


                                     with a copy to:

                                                700 Louisiana, Suite 4400
                                                Houston, TX  77002

                                     Attention: Robert L. Roberts

                                     Telephone: (713) 546-9754
                                     Facsimile: (713) 223-4007





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 7
<PAGE>   64

$20,000,000                          FIRST CHICAGO NBD BANK, CANADA,
                                      as a Canadian Lender


                                     By:  /s/ FIRST CHICAGO NBD BANK, CANADA 
                                          --------------------------------------
                                     Name:
                                     Title:

                                     Address:   BCE Place, P.O. Box 613
                                                161 Bay Street, Suite 4240
                                                Toronto M5J 2S1

                                     Attention: Ms. Janet A. Beadle

                                     Telephone: (416) 365-5262
                                     Facsimile: (416) 363-7574


                                     with a copy to:

                                                Syndications and
                                                Placements/Agency
                                                Suite 0353, 15th Floor
                                                One First National Plaza
                                                Chicago, IL  60670

                                     Attention: Mr. Thomas E. Both

                                     Telephone: (312) 732-7268
                                     Facsimile: (312) 732-2038





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 8
<PAGE>   65

$20,000,000                          THE CHASE MANHATTAN BANK OF CANADA, as a
                                     Canadian Lender


                                     By: /s/ THE CHASE MANHATTAN BANK OF CANADA 
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   1 First Canadian Place
                                                100 King Street West,
                                                Suite 6900
                                                Box 106
                                                Toronto, Ontario
                                                Canada M5X 1A4

                                     Attention: Richard Jerome

                                     Telephone: (416) 216-4145
                                     Facsimile: (416) 216-4161


                                     with a copy to:

                                     Lori Vetters
                                     The Chase Manhattan Bank
                                     707 Travis
                                     5th Floor North
                                     Houston, Texas 77002

                                     Telephone: (713) 216-4332
                                     Facsimile: (713) 216-4117





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 9
<PAGE>   66

$20,000,000                          ROYAL BANK OF CANADA, as a Canadian Lender


                                     By: /s/ ROYAL BANK OF CANADA
                                        ----------------------------------------
                                     Name:   Doug R. Crook
                                     Title:  Senior Account Manager

                                     Address:   11th Floor, 335 - 8 Ave. S.W.
                                                Calgary, AB T2P 1C9
                                                CANADA

                                     Attention: G.W.D. (Doug) Paul
                                                Senior Account Manager

                                     Telephone: (403) 292-3457
                                     Facsimile: (403) 292-3436

                                     with a copy to:

                                     Ms. Linda Stephens
                                     Royal Bank of Canada
                                     600 Wilshire Boulevard, Suite 800
                                     Los Angeles, CA 90017
                                     U.S.A.

                                     Telephone: (213) 955-5347
                                     Facsimile: (213) 955-5350





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 10
<PAGE>   67

$20,000,000                          CANADIAN IMPERIAL BANK OF COMMERCE, as a
                                     Canadian Lender



                                     By: /s/ CANADIAN IMPERIAL BANK OF COMMERCE
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:   Two Paces West
                                                2727 Paces Ferry Road,
                                                Suite 1200
                                                Atlanta, GA 30339

                                     Attention: Credit Operations

                                     Telephone: (770) 319-4999
                                     Facsimile: (770) 319-4950

                                     With a copy to:

                                     909 Fannin, Suite 1200
                                     Houston, TX  77010

                                     Attention: Brian Swinford

                                     Telephone: (713) 658-8400
                                     Facsimile: (713) 658-9922





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 11
<PAGE>   68

$20,000,000                          THE BANK OF NOVA SCOTIA, as a
                                     Canadian Lender


                                     By: /s/ THE BANK OF NOVA SCOTIA
                                        ----------------------------------------
                                     Name:
                                     Title:

                                     Address:                                   
                                                --------------------------------
                                                                                
                                                --------------------------------
                                                                                
                                                --------------------------------

                                     Attention:                                 
                                                --------------------------------

                                     Telephone:                                 
                                                --------------------------------
                                     Facsimile:                                 
                                                --------------------------------

                                     With a copy to:

                                     The Bank of Nova Scotia
                                     Houston Representative Office
                                     1100 Louisiana, Suite 3000
                                     Houston, TX  77002

                                     Attention: Mark A. Ammerman

                                     Telephone: (713) 752-0900
                                     Facsimile: (713) 752-2425



               
- ---------------
$125,000,000

AGGREGATE
COMMITMENT





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 12

<PAGE>   1
                                                                    EXHIBIT 10.3


                         [AUSTRALIAN CREDIT AGREEMENT]

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


                                CREDIT AGREEMENT

                          dated as of October 31, 1996

                                     among

                             APACHE ENERGY LIMITED,

                                      and

                       APACHE OIL AUSTRALIA PTY. LIMITED

                                      and

                      THE AUSTRALIAN LENDERS NAMED HEREIN,

                                      and

                      THE FIRST NATIONAL BANK OF CHICAGO,
                        as Global Administrative Agent,

                                      and

                      CHASE SECURITIES AUSTRALIA LIMITED,
                      as Australian Administrative Agent,

                                      and

                      FIRST CHICAGO CAPITAL MARKETS, INC.,
                                  as Arranger,

                                      and

                             CHASE SECURITIES INC.,
                                  as Arranger


================================================================================
<PAGE>   2
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
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                                                                            ----
<S>                                                                         <C> 
RECITALS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1

ARTICLE I     DEFINITIONS AND TERMS OF CONSTRUCTION   . . . . . . . . . . .    1
       1.1.   Definitions   . . . . . . . . . . . . . . . . . . . . . . . .    1
       1.2.   Use of Defined Terms  . . . . . . . . . . . . . . . . . . . .   13
       1.3.   Cross References  . . . . . . . . . . . . . . . . . . . . . .   13
       1.4.   Accounting and Financial Determination  . . . . . . . . . . .   13
       1.5.   Currency References   . . . . . . . . . . . . . . . . . . . .   13

ARTICLE II    THE FACILITY  . . . . . . . . . . . . . . . . . . . . . . . .   14
       2.1.   The Facility  . . . . . . . . . . . . . . . . . . . . . . . .   14
              (a)    Description of Facility  . . . . . . . . . . . . . . .   14
              (b)    Facility Amount  . . . . . . . . . . . . . . . . . . .   14
              (c)    All Loans  . . . . . . . . . . . . . . . . . . . . . .   14
              (d)    Revolving Advances   . . . . . . . . . . . . . . . . .   14
       2.2.   Extension of Termination Date and of Aggregate Commitment   .   14
       2.3.   [Intentionally Omitted]   . . . . . . . . . . . . . . . . . .   16
       2.4.   Facility Fee; Other Fees  . . . . . . . . . . . . . . . . . .   16
              (a)    Facility Fee   . . . . . . . . . . . . . . . . . . . .   16
              (b)    Agents' Fees   . . . . . . . . . . . . . . . . . . . .   16

ARTICLE III   BORROWING; ETC.   . . . . . . . . . . . . . . . . . . . . . .   16
       3.1.   Method of Borrowing   . . . . . . . . . . . . . . . . . . . .   16
       3.2.   Maximum Interest  . . . . . . . . . . . . . . . . . . . . . .   17
       3.3.   Method of Selecting Interest Periods for Loans  . . . . . . .   18
       3.4.   [Intentionally Omitted]   . . . . . . . . . . . . . . . . . .   18
       3.5.   Minimum Amount of Each Advance  . . . . . . . . . . . . . . .   18
       3.6.   Continuation Elections  . . . . . . . . . . . . . . . . . . .   18
       3.7.   Telephonic Notices  . . . . . . . . . . . . . . . . . . . . .   18
       3.8.   Rate after Maturity   . . . . . . . . . . . . . . . . . . . .   19
       3.9.   Interest Payment Dates; Determination of Interest and Fees  .   19
              (a)    Interest Payment Dates   . . . . . . . . . . . . . . .   19
              (b)    Determination of Interest and Fees   . . . . . . . . .   19
       3.10.  Notification of Advances, Interest Rates, Prepayments and
              Commitment Reductions   . . . . . . . . . . . . . . . . . . .   19
       3.11.  Non-Receipt of Funds by the Australian Administrative
              Agent   . . . . . . . . . . . . . . . . . . . . . . . . . . .   19

ARTICLE IV    MANDATORY PAYMENTS; REDUCTIONS OF COMMITMENTS; ETC.   . . . .   20
       4.1.   Mandatory Prepayments   . . . . . . . . . . . . . . . . . . .   20
              (a)    Mandatory Prepayments  . . . . . . . . . . . . . . . .   20
              (b)    Application of Mandatory Prepayments   . . . . . . . .   20
       4.2.   Voluntary Prepayments   . . . . . . . . . . . . . . . . . . .   20
       4.3.   Method of Payment   . . . . . . . . . . . . . . . . . . . . .   21
       4.4.   Notes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   21
       4.5.   Voluntary Reductions of Commitments.    . . . . . . . . . . .   21
       4.6.   Voluntary and Mandatory Prepayments   . . . . . . . . . . . .   21

ARTICLE V     [Intentionally Omitted]   . . . . . . . . . . . . . . . . . .   21
</TABLE>





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                                                                            ----
<S>                                                                          <C>
ARTICLE VI    CHANGE IN CIRCUMSTANCES; TAXES  . . . . . . . . . . . . . . .   22
       6.1.   Yield Protection  . . . . . . . . . . . . . . . . . . . . . .   22
       6.2.   Availability of Eurodollar Loans  . . . . . . . . . . . . . .   22
       6.3.   Funding Indemnification   . . . . . . . . . . . . . . . . . .   22
       6.4.   Lending Installations   . . . . . . . . . . . . . . . . . . .   23
       6.5.   Increased Capital Costs   . . . . . . . . . . . . . . . . . .   23
       6.6.   Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   23
       6.7.   Australian Lender Statements; Survival of Indemnity;
              Substitution of Australian Lenders; Limitation on Claims
              by Australian Lenders   . . . . . . . . . . . . . . . . . . .   24
       6.8.   [Intentionally Omitted]   . . . . . . . . . . . . . . . . . .   24
       6.9.   Currency Conversion and Currency Indemnity  . . . . . . . . .   24
              (a)    Payments in Agreed Currency.   . . . . . . . . . . . .   24
              (b)    Conversion of Agreed Currency into Judgment
                     Currency.  . . . . . . . . . . . . . . . . . . . . . .   24
              (c)    Circumstances Giving Rise to Indemnity.  . . . . . . .   25
              (d)    Indemnity Separate Obligation.   . . . . . . . . . . .   25

ARTICLE VII   CONDITIONS PRECEDENT  . . . . . . . . . . . . . . . . . . . .   25
       7.1.   Conditions of Effectiveness   . . . . . . . . . . . . . . . .   25
       7.2.   Each Advance  . . . . . . . . . . . . . . . . . . . . . . . .   26

ARTICLE VIII  REPRESENTATIONS AND WARRANTIES  . . . . . . . . . . . . . . .   27
       8.1.   Corporate Existence and Standing  . . . . . . . . . . . . . .   27
       8.2.   Authorization and Validity  . . . . . . . . . . . . . . . . .   27
       8.3.   No Conflict; Government Consent   . . . . . . . . . . . . . .   27
       8.4.   Financial Statements  . . . . . . . . . . . . . . . . . . . .   27
       8.5.   Material Adverse Change   . . . . . . . . . . . . . . . . . .   28
       8.6.   Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   28
       8.7.   Litigation and Guaranteed Obligations   . . . . . . . . . . .   28
       8.8.   Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . .   28
       8.9.   Superannuation Scheme   . . . . . . . . . . . . . . . . . . .   28
       8.10.  Accuracy of Information   . . . . . . . . . . . . . . . . . .   28
       8.11.  [Intentionally Omitted]   . . . . . . . . . . . . . . . . . .   28
       8.12.  Material Agreements   . . . . . . . . . . . . . . . . . . . .   28
       8.13.  Compliance With Laws  . . . . . . . . . . . . . . . . . . . .   28
       8.14.  Title to Properties   . . . . . . . . . . . . . . . . . . . .   29
       8.15.  Investment Company Act  . . . . . . . . . . . . . . . . . . .   29
       8.16.  Public Utility Holding Company Act  . . . . . . . . . . . . .   29
       8.17.  Post-Retirement Benefits  . . . . . . . . . . . . . . . . . .   29
       8.18.  Solvency  . . . . . . . . . . . . . . . . . . . . . . . . . .   29
       8.19.  Environmental Warranties  . . . . . . . . . . . . . . . . . .   29

ARTICLE IX    AFFIRMATIVE COVENANTS   . . . . . . . . . . . . . . . . . . .   30
       9.1.   Financial Reporting   . . . . . . . . . . . . . . . . . . . .   30
       9.2.   Use of Proceeds   . . . . . . . . . . . . . . . . . . . . . .   32
       9.3.   Notice of Default, Unmatured Default, Litigation and
              Material Adverse Effect   . . . . . . . . . . . . . . . . . .   32
       9.4.   Conduct of Business   . . . . . . . . . . . . . . . . . . . .   32
       9.5.   Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   32
</TABLE>





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                               TABLE OF CONTENTS
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<S>                                                                           <C>
       9.6.   Insurance   . . . . . . . . . . . . . . . . . . . . . . . . .   32
       9.7.   Compliance with Laws  . . . . . . . . . . . . . . . . . . . .   33
       9.8.   Maintenance of Properties   . . . . . . . . . . . . . . . . .   33
       9.9.   Inspection  . . . . . . . . . . . . . . . . . . . . . . . . .   33
       9.10.  Operation of Properties   . . . . . . . . . . . . . . . . . .   33
       9.11.  Delivery of Guaranties  . . . . . . . . . . . . . . . . . . .   33
       9.12.  Environmental Covenant  . . . . . . . . . . . . . . . . . . .   33
       9.13.  Further Assurances  . . . . . . . . . . . . . . . . . . . . .   34
       9.14.  Borrowing Notice  . . . . . . . . . . . . . . . . . . . . . .   34
       9.15.  Existing Acceptance Agreement   . . . . . . . . . . . . . . .   34

ARTICLE X     FINANCIAL COVENANTS   . . . . . . . . . . . . . . . . . . . .   34
       10.1.  Consolidated Tangible Net Worth   . . . . . . . . . . . . . .   34
       10.2.  Ratio of EBITDDA to Consolidated Interest   . . . . . . . . .   34

ARTICLE XI    NEGATIVE COVENANTS  . . . . . . . . . . . . . . . . . . . . .   34
       11.1.  Indebtedness  . . . . . . . . . . . . . . . . . . . . . . . .   34
       11.2.  Merger  . . . . . . . . . . . . . . . . . . . . . . . . . . .   35
       11.3.  Sales of Properties or Borrowing Base Subsidiaries  . . . . .   35
       11.4.  Guaranteed Obligations  . . . . . . . . . . . . . . . . . . .   36
       11.5.  Liens   . . . . . . . . . . . . . . . . . . . . . . . . . . .   36
       11.6.  Restricted Payments, etc  . . . . . . . . . . . . . . . . . .   37
       11.7.  Transactions with Affiliates  . . . . . . . . . . . . . . . .   37
       11.8.  Negative Pledges, etc   . . . . . . . . . . . . . . . . . . .   37
       11.9.  Regulation U Acquisitions   . . . . . . . . . . . . . . . . .   37
       11.10. Investments   . . . . . . . . . . . . . . . . . . . . . . . .   38
       11.11. Hedging Contracts   . . . . . . . . . . . . . . . . . . . . .   38
       11.12. Approval of Consents  . . . . . . . . . . . . . . . . . . . .   39

ARTICLE XII   DEFAULTS  . . . . . . . . . . . . . . . . . . . . . . . . . .   39
       12.1.  Breach of Warranties and Misleading Statements  . . . . . . .   39
       12.2.  Nonpayment of Loans, Fees and other Obligations   . . . . . .   39
       12.3.  Breach of Certain Covenants   . . . . . . . . . . . . . . . .   39
       12.4.  Default Under Canadian Loan Documents or U.S. Loan
              Documents.  . . . . . . . . . . . . . . . . . . . . . . . . .   39
       12.5.  Non-Compliance with this Agreement  . . . . . . . . . . . . .   39
       12.6.  Cross-Defaults  . . . . . . . . . . . . . . . . . . . . . . .   39
       12.7.  Voluntary Dissolution and Insolvency Proceedings and
              Actions   . . . . . . . . . . . . . . . . . . . . . . . . . .   39
       12.8.  Involuntary Insolvency Proceedings or Dissolution   . . . . .   40
       12.9.  Condemnation  . . . . . . . . . . . . . . . . . . . . . . . .   40
       12.10. Judgments   . . . . . . . . . . . . . . . . . . . . . . . . .   40
       12.11. Enforcement Against Assets  . . . . . . . . . . . . . . . . .   40
       12.12. Other Defaults Under Australian Loan Documents  . . . . . . .   40
       12.13. Failure of Australian Loan Documents  . . . . . . . . . . . .   40
       12.14. Change in Control   . . . . . . . . . . . . . . . . . . . . .   40

ARTICLE XIII  ACCELERATION, WAIVERS, AMENDMENTS, REMEDIES; RELEASES   . . .   40
       13.1.  Acceleration  . . . . . . . . . . . . . . . . . . . . . . . .   40
</TABLE>





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       13.2.  Amendments  . . . . . . . . . . . . . . . . . . . . . . . . .   41
       13.3.  Preservation of Rights  . . . . . . . . . . . . . . . . . . .   41

ARTICLE XIV   GENERAL PROVISIONS  . . . . . . . . . . . . . . . . . . . . .   42
       14.1.  [Intentionally Omitted]   . . . . . . . . . . . . . . . . . .   42
       14.2.  Governmental Regulation   . . . . . . . . . . . . . . . . . .   42
       14.3.  Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . .   42
       14.4.  Headings  . . . . . . . . . . . . . . . . . . . . . . . . . .   42
       14.5.  Entire Agreement  . . . . . . . . . . . . . . . . . . . . . .   42
       14.6.  Several Obligations   . . . . . . . . . . . . . . . . . . . .   42
       14.7.  Reimbursement of Costs and Expenses; Indemnification  . . . .   42
              (a)    Reimbursement of Costs and Expenses  . . . . . . . . .   42
              (b)    Indemnification  . . . . . . . . . . . . . . . . . . .   42
       14.8.  Numbers of Documents  . . . . . . . . . . . . . . . . . . . .   43
       14.9.  Severability of Provisions  . . . . . . . . . . . . . . . . .   43
       14.10. Nonliability of Australian Lenders  . . . . . . . . . . . . .   43
       14.11. CHOICE OF LAW   . . . . . . . . . . . . . . . . . . . . . . .   43
       14.12. CONSENT TO JURISDICTION   . . . . . . . . . . . . . . . . . .   44
       14.13. Confidentiality   . . . . . . . . . . . . . . . . . . . . . .   44

ARTICLE XV    THE AGENTS, THE ARRANGERS AND THE ENGINEERING BANKS   . . . .   44
       15.1.  Appointment of Agents   . . . . . . . . . . . . . . . . . . .   44
       15.2.  Powers  . . . . . . . . . . . . . . . . . . . . . . . . . . .   44
       15.3.  General Immunity  . . . . . . . . . . . . . . . . . . . . . .   44
       15.4.  No Responsibility for Loans, Recitals, etc  . . . . . . . . .   45
       15.5.  Action on Instructions of Australian Lenders  . . . . . . . .   45
       15.6.  Employment of Agents and Counsel  . . . . . . . . . . . . . .   45
       15.7.  Reliance on Documents; Counsel  . . . . . . . . . . . . . . .   45
       15.8.  Reimbursement and Indemnification   . . . . . . . . . . . . .   45
       15.9.  Rights as an Australian Lender  . . . . . . . . . . . . . . .   45
       15.10. Australian Lender Credit Decision   . . . . . . . . . . . . .   45
       15.11. Certain Successor Agents  . . . . . . . . . . . . . . . . . .   46

ARTICLE XVI   SETOFF; RATABLE PAYMENTS  . . . . . . . . . . . . . . . . . .   46
       16.1.  Setoff  . . . . . . . . . . . . . . . . . . . . . . . . . . .   46
       16.2.  Ratable Payments  . . . . . . . . . . . . . . . . . . . . . .   46

ARTICLE XVII  BENEFIT OF AGREEMENT; SUBSTITUTIONS; PARTICIPATIONS   . . . .   46
       17.1.  Successors and Assigns  . . . . . . . . . . . . . . . . . . .   46
       17.2.  Participations  . . . . . . . . . . . . . . . . . . . . . . .   47
       17.3.  Substitutions   . . . . . . . . . . . . . . . . . . . . . . .   48
       17.4.  Dissemination of Information  . . . . . . . . . . . . . . . .   48

ARTICLE XVIII NOTICES   . . . . . . . . . . . . . . . . . . . . . . . . . .   49
       18.1.  Giving Notice   . . . . . . . . . . . . . . . . . . . . . . .   49
       18.2.  Change of Address   . . . . . . . . . . . . . . . . . . . . .   49
</TABLE>





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                                                                            ----
<S>                                                                           <C>
ARTICLE XIX   COUNTERPARTS  . . . . . . . . . . . . . . . . . . . . . . . .   49

ARTICLE XX    NO ORAL AGREEMENTS  . . . . . . . . . . . . . . . . . . . . .   49

EXHIBITS:
- -------- 

EXHIBIT A       NOTE
EXHIBIT B       FORM OF LEGAL OPINION
EXHIBIT C       COMPLIANCE CERTIFICATE
EXHIBIT D       SUBSTITUTION CERTIFICATE
EXHIBIT E       CONTINUATION NOTICE
EXHIBIT F       FORM OF AUSTRALIAN COUNSEL OPINION
EXHIBIT G       CONFIDENTIALITY AGREEMENT
EXHIBIT H       FORM OF DEED OF GUARANTY


SCHEDULES:
- --------- 

SCHEDULE A      EURODOLLAR SPREAD, FACILITY FEE RATES
SCHEDULE 8.8    SUBSIDIARIES; BORROWING BASE SUBSIDIARIES
SCHEDULE 11.1   INDEBTEDNESS; LIENS
SCHEDULE 11.10  INVESTMENTS
</TABLE>





                                       v
<PAGE>   7
                                CREDIT AGREEMENT

       This Agreement, dated as of October 31, 1996, is among Apache Energy
Limited (ACN 009 301 964), a corporation organized under the laws of the State
of Western Australia, Australia ("Apache Energy Limited"), Apache Oil Australia
Pty. Limited (ACN 050 611 688), a corporation organized under the laws of the
State of New South Wales, Australia ("Apache Oil Australia" and, together with
Apache Energy Limited, the "Company"), the various commercial lending
institutions as are or may become parties hereto (the "Australian Lenders"),
The First National Bank of Chicago, as Global Administrative Agent (the "Global
Administrative Agent"), Chase Securities Australia Limited (ACN 002 888 011),
as Australian Administrative Agent (the "Australian Administrative Agent"),
First Chicago Capital Markets, Inc., as Arranger, and Chase Securities Inc., as
Arranger.

                                   RECITALS:

       1.     The Company desires to obtain commitments from the Australian
Lenders pursuant to which extensions of credit in the form of Loans will be
made in the amounts and currencies herein provided pursuant to the terms and
provisions herein set forth.

       2.     The proceeds of the Loans will be used by the Company to
refinance existing debt of the Company and for general corporate purposes.

       3.     The Australian Lenders are willing, on the terms and subject to
the conditions herein set forth, to extend such commitments and make such
extensions of credit to the Company.

       4.     The Company, the Australian Lenders, the Global Administrative
Agent, the Australian Administrative Agent and the Arrangers hereby agree as
follows:


                                   ARTICLE I

                     DEFINITIONS AND TERMS OF CONSTRUCTION

       1.1.   Definitions.  The following terms (whether or not underscored)
when used in this Agreement, including its preamble and recitals, shall, except
where the context otherwise requires, have the following meanings (such
meanings to be equally applicable to the singular and the plural forms
thereof):

       "Accepting Lender" is defined in Section 2.2.

       "Acquisition" means any transaction, or any series of related
transactions, consummated after the date of this Agreement, by which the
Company or any of the Subsidiaries (i) acquires any going business or all or
substantially all of the assets of any Person or division thereof, whether
through purchase of assets, merger or otherwise or (ii) directly or indirectly
acquires (in one transaction or as the most recent transaction in a series of
transactions) at least a majority (in number of votes) of the securities of a
corporation which have ordinary voting power for the election of directors
(other than securities having such power only by reason of the happening of a
contingency).

       "Advance" means a borrowing hereunder consisting of the aggregate amount
of the several Loans made by the Australian Lenders or any of them to the
Company on the same Borrowing Date and for the same Interest Period, which
results in an increase in the aggregate amount of outstanding Loans under this
Agreement.

       "Affiliate" of any Person means any Person directly or indirectly
controlling, controlled by or under direct or indirect common control of such
Person; provided, however, notwithstanding the foregoing, the definition of
<PAGE>   8
"Affiliate" shall not include any Subsidiary of the Company.  A Person shall be
deemed to control another Person if the controlling Person owns directly or
indirectly 20% or more of any class of voting securities of the controlled
Person or possesses, directly or indirectly, the power to direct or cause the
direction of the management or policies of the controlled Person, whether
through ownership of stock, by contract or otherwise.

       "Agents" means each of the Global Administrative Agent, the Australian
Administrative Agent, the Arrangers, and the Engineering Banks.

       "Agreed Currency" is defined in Section 6.9(a).

       "Aggregate Commitment" means, as of the time a determination thereof is
to be made, the sum of the Commitments of all the Australian Lenders hereunder,
being $125,000,000 as of the date hereof, and as reduced from time to time
after the date hereof pursuant to Sections 4.5 and 13.1.

       "Agreement" means this Credit Agreement, as it may be amended,
supplemented, restated or otherwise modified and in effect from time to time.

       "Agreement Accounting Principles" means, on any date, those generally
accepted accounting principles applied in preparing the financial statements
referred to in Section 8.4.

       "Anniversary Date" means any October 31, with the first such date being
October 31, 1997.

       "Annual Certificate of Extension" means a certificate of the Parent and
the Company, executed by an Authorized Officer and delivered to the Global
Administrative Agent and the Australian Administrative Agent, which requests an
extension of the then scheduled Termination Date pursuant to Section 2.2.

       "Apache Energy Limited" means Apache Energy Limited (ACN 009 301 964), a
corporation organized under the laws of the State of Western Australia,
Australia.

       "Apache Oil Australia" means Apache Oil Australia Pty. Limited (ACN 050
611 688), a corporation organized under the laws of the State of New South
Wales, Australia.

       "Approved Australian Lender" means Australian banks which have a long
term debt rating of A/A2 or better or short term A1/P1 or better (domestically
or internationally, whichever is the higher rating) by S&P or Moody's (or any
replacement rating classification by either S&P or Moody's which is determined
in substantially the same manner).

       "Approved Engineers' Report" shall have the meaning ascribed to such
term in the U.S. Credit Agreement (without amendment except as permitted
pursuant to the Intercreditor Agreement).

       "Arranger" means each of First Chicago Capital Markets, Inc. and Chase
Securities Inc. in their respective capacities as arrangers pursuant to Article
XV.

       "Australian Administrative Agent" means Chase Securities Australia
Limited (ACN 002 888 011) in its capacity as Administrative Agent for the
lenders party to the Australian Credit Agreement and any successor thereto.

       "Australian Lenders" means the financial institutions listed on the
signature pages of this Agreement and their respective successors and assigns
in accordance with Section 17.3 (including any commercial lending institution
becoming a party hereto pursuant to a Substitution Certificate) or otherwise by
operation of law.

       "Australian Loan Documents" means this Agreement, the Notes, the
Guaranties, the Substitution Certificates, the agreement with respect to fees
described in Section 2.4(b), the Intercreditor Agreement and the





                                       2
<PAGE>   9
Indemnity Agreements, together with all exhibits, schedules and attachments
thereto, and all other agreements, documents, certificates, financing
statements and instruments from time to time executed and delivered pursuant to
or in connection with any of the foregoing.

       "Authorized Officer" means, with respect to the Company, the President,
the Vice President and Chief Financial Officer and the Treasurer of the
Company, and any officer of the Company specified as such to the Australian
Administrative Agent and the Global Administrative Agent in writing by any of
the aforementioned officers of the Company, or, with respect to the Parent, the
Chairman, the President, the Vice President and Chief Financial Officer and the
Treasurer of the Parent, and any officer of the Parent, specified as such to
the Global Administrative Agent in writing by any of the aforementioned
officers of the Parent.

       "Borrowing Base Debt" shall have the meaning ascribed to such term in
the U.S. Credit Agreement (without amendment except as permitted pursuant to
the Intercreditor Agreement).

       "Borrowing Base Subsidiary" means, at any time, any Subsidiary of the
Company which owns or controls any Properties and any Subsidiary that owns or
controls, directly or indirectly, another Subsidiary that owns or controls any
Properties.  The Borrowing Base Subsidiaries of the Company as of the Global
Effective Date are listed on Schedule 8.8 hereto.

       "Borrowing Date" means any Business Day on which an Advance is made
hereunder.

       "Borrowing Notice" is defined in Section 3.3.

       "Business Day" means a weekday on which (a) (for the purpose of
determining the Eurodollar Base Rate under paragraph (b) of that definition)
the relevant financial markets are open in London; (b) (except for the purpose
stated in paragraph (a)) banks are open for business in Sydney and Melbourne;
and (c) in the case where a payment is to be made, banks are open for business
in New York City, Sydney and Melbourne.

       "Canadian Administrative Agent" means Bank of Montreal in its capacity
as administrative agent for the lenders party to the Canadian Credit Agreement
and any successor thereto.

       "Canadian Borrowers" means Apache Canada Ltd., a corporation organized
under the laws of the Province of Alberta, Canada.

       "Canadian Commitments" has the meaning of the term "Aggregate
Commitment" as defined in the Canadian Credit Agreement.

       "Canadian Credit Agreement" means that certain Credit Agreement of even
date herewith among the Canadian Borrower, the Canadian Lenders, The First
National Bank of Chicago, as Global Administrative Agent, the Canadian
Administrative Agent, First Chicago Capital Markets, Inc., as Arranger, and
Chase Securities Inc., as Arranger, as it may be amended, supplemented,
restated or otherwise modified and in effect from time to time.

       "Canadian Lenders" means the financial institutions listed on the
signature pages of the Canadian Credit Agreement and their respective
successors and assigns.

       "Canadian Loan Documents" means the Canadian Credit Agreement, any
notes, any guaranties, any assignment agreements, the agreement with respect to
fees, the Intercreditor Agreement and the Indemnity Agreements, together with
all exhibits, schedules and attachments thereto, and all other agreements,
documents, certificates, financing statements and instruments from time to time
executed and delivered pursuant to or in connection with any of the foregoing.





                                       3
<PAGE>   10
       "Capitalized Lease" means, with any respect to a Person, any lease of
property by such Person as lessee which would be capitalized on a balance sheet
of such Person prepared in accordance with Agreement Accounting Principles.

       "Capitalized Lease Obligations" means, with respect to a Person, the
amount of the obligations of such Person under Capitalized Leases which would
be shown as a liability on a balance sheet of such Person prepared in
accordance with Agreement Accounting Principles.

       "Cash Equivalent Investment" means, at any time:

              (a)    any evidence of Indebtedness, maturing not more than one
       year after such time, issued or guaranteed by the United States
       Government or by the Government of Australia;

              (b)    commercial paper, maturing not more than nine months from
       the date of issue, which is issued by any Agent or any Agent's holding
       company, or by (i) a corporation (other than the Parent or an Affiliate
       of the Parent) organized under the laws of any state of Australia or any
       state of the United States or of the District of Columbia and rated A-1
       by S&P or P-1 by Moody's, or (ii) any Combined Lender (or its holding
       company) which has (or which at the time is a subsidiary of a holding
       company which has) a Qualified Long Term Rating, or which is an Approved
       Australian Lender; or

              (c)    any certificate of deposit, time deposit or banker's
       acceptance, maturing not more than one year after such time, which is
       issued or accepted by any Agent or any Agent's holding company, or by
       either (i) an Australian bank which has a combined capital and surplus
       and undivided profits of not less than $500,000,000, which has (or which
       at the time is a subsidiary of a holding company which has) a Qualified
       Long Term Rating, (ii) any Combined Lender which has (or which is a
       subsidiary of a holding company which has) a Qualified Long Term Rating,
       or (iii) any Approved Australian Lender.

       "CERCLA" means the Comprehensive Environmental Response, Compensation
and Liability Act of 1980, as amended.

       "Change in Control" means:

                     (a)    the failure by the Company to own, free and clear
              of all Liens or encumbrances, 100% of the outstanding capital
              stock of any Subsidiary which is a Guarantor on a fully diluted
              basis, except as a result of the merger of any such Subsidiary
              into the Company or any Subsidiary of the Company pursuant to
              Section 11.2; provided, however, that, in the event of a merger
              of any such Subsidiary with a Subsidiary, such Subsidiary shall
              at its own expense deliver to the Australian Administrative Agent
              a duly executed Guaranty, substantially in the form of Exhibit H,
              together with such related documents and opinions as the
              Australian Administrative Agent may request; or

                     (b)    the failure by the Company to own, directly or
              indirectly, free and clear of all Liens, other than Liens
              permitted under Section 11.5 hereof, 100% of the outstanding
              capital stock of each Borrowing Base Subsidiary on a fully
              diluted basis except as a result of a merger of such Borrowing
              Base Subsidiary with the Company, another Borrowing Base
              Subsidiary or with any other Person as permitted pursuant to
              Section 11.2, or as a result of a sale of such Borrowing Base
              Subsidiaries as permitted pursuant to Section 11.3; or

                     (c)    the failure by the Parent to own, directly or
              indirectly, free and clear of all Liens, other than Liens
              permitted under Section 11.5 of the U.S. Credit Agreement, not
              less than 95% of the outstanding capital stock of the Company on
              a fully diluted basis.





                                       4
<PAGE>   11
       "Chase" means The Chase Manhattan Bank, in its individual capacity and
its successors.

       "Claims" is defined in Section 14.7.

       "Combined Commitments" means, at any time, the aggregate of the
Aggregate Commitments, the U.S. Commitments and the Canadian Commitments at
such time.

       "Combined Lenders" means the Canadian Lenders, the U.S. Lenders and the
Australian Lenders.

       "Combined Required Lenders" means, at any time, Combined Lenders having
greater than 66-2/3% of the aggregate amount of the Combined Commitments at
such time.

       "Commitment" means, with respect to each Australian Lender, the
obligation of such Australian Lender to make Loans not exceeding the amount set
forth as its Commitment opposite its signature below or in the relevant
Substitution Certificate, as such amount may be modified from time to time
pursuant to the provisions of this Agreement, including any Substitution
Certificate executed by such Australian Lender and its Substituting Lender and
delivered pursuant to Section 17.3 and any reduction pursuant to Sections 4.5,
or 13.1; it being understood, however, that a change in the Global Borrowing
Base does not constitute a modification of any Commitment.

       "Company" is defined in the Preamble.

       "Consolidated Interest Expense" means, for any period for which a
determination thereof is to be made, total interest expense, whether paid or
accrued (but excluding that attributable to Capitalized Leases), of the Parent
and its Consolidated Subsidiaries on a consolidated basis including, without
limitation, all commissions, discounts and other fees and charges owing with
respect to letters of credit and bankers' acceptance financing.

       "Consolidated Net Income" means, for any period for which a
determination thereof is to be made, the net income (or loss) after taxes of
the Parent and its Consolidated Subsidiaries on a consolidated basis for such
period taken as a single accounting period; provided that there shall be
excluded the income (or loss) of any Affiliate of the Parent or other Person
(other than a Consolidated Subsidiary of the Parent) in which any Person (other
than the Parent or any of the Consolidated Subsidiaries) has a joint interest,
except to the extent of the amount of dividends or other distributions actually
paid to the Parent or any of the Consolidated Subsidiaries by such Affiliate or
other Person during such period.

       "Consolidated Subsidiary" means, in relation to any Person, as of the
time a determination thereof is to be made, any Subsidiary or other entity the
accounts of which would be consolidated with those of the Person in its
consolidated financial statements if such statements were prepared as of such
date.

       "Consolidated Tangible Net Worth" means, as of the time a determination
thereof is to be made, the consolidated stockholders' equity of the Parent and
its Consolidated Subsidiaries, less their consolidated intangible assets, all
determined as of such date in accordance with Agreement Accounting Principles.

       "Continuation Notice" means a notice by means of telecopy or telephone
(confirmed in writing promptly thereafter if by telephone) of continuation,
which notice shall specify the principal amount to be continued, the date of
such continuation and the Interest Period, which notice, when delivered by
telecopy or confirmed in writing, shall be substantially in the form of Exhibit
E and executed on behalf of the Company by an Authorized Officer.

       "Debt" means all Indebtedness of the type referred to in clauses (i),
(ii), (iii), (iv) and (v) of the definition of Indebtedness.

       "Debt/Capitalization Ratio" means, as of the time a determination
thereof is to be made, the ratio expressed as a decimal of (x) the aggregate
outstanding amount of the consolidated Debt of the Parent and its Consolidated





                                       5
<PAGE>   12
Subsidiaries, to (y) the sum of the consolidated stockholders' equity of the
Parent and its Consolidated Subsidiaries plus the aggregate outstanding amount
of the consolidated Debt of the Parent and its Consolidated Subsidiaries;
provided, however, that, for purposes of the definition of Eurodollar Spread,
the Debt/Capitalization Ratio on each day commencing on the forty-fifth (45th)
day following the end of a calendar quarter shall be deemed to be the lesser of
(a) the Debt/Capitalization Ratio as of the end of such calendar quarter and
(b) the Debt/Capitalization Ratio as of the final day of the month following
the end of such calendar quarter, in each case based on a certificate received
by the Global Administrative Agent and the U.S. Lenders from an Authorized
Officer of the Parent pursuant to Section 9.1(k) of the U.S. Credit Agreement;
provided, further, that until the forty-fifth (45th) day following the calendar
quarter ending September 30, 1996, the Debt/Capitalization Ratio shall be
deemed to be "(0.55" for purposes of the definition of Eurodollar Spread and
the calculation of applicable fees.

       "Debt Limit Excession" means the condition existing at any time prior to
the Termination Date in which the outstanding principal balance of the
Borrowing Base Debt as of such date exceeds the Global Borrowing Base as of
such date.

       "Declining Lender" is defined in Section 2.2.

       "Default" means any event described in Article XII.

       "Downgrade Condition" shall have the meaning assigned to such term in
the U.S. Credit Agreement (without amendment except as permitted pursuant to
the Intercreditor Agreement).

       "EBITDDA" means, for any period for which a determination thereof is to
be made, without duplication, the sum of the amounts for such period of (i)
Consolidated Net Income, (ii) Consolidated Interest Expense, (iii) depreciation
expense and depletion expense, (iv) amortization expense, (v) federal and state
taxes, (vi) other non-cash charges and expenses and (vii) any losses arising
outside of the ordinary course of business which have been included in the
determination of Consolidated Net Income less any gains arising outside of the
ordinary course of business which have been included in the determination of
Consolidated Net Income, all as determined on a consolidated basis for the
Parent and its Consolidated Subsidiaries.

       "Engineering Bank" means each of First Chicago and Chase in their
respective capacities as Engineering Banks.

       "Environmental Law" means any federal, state, provincial, territorial or
local statute (including for example and without limitation, the Environmental
Protection Act 1986 (WA), Explosives & Dangerous Goods Act 1961 (WA), Mining
Act (WA), Clean Air Act 1961 (NSW), Clean Water Act 1970 (NSW), Noise Control
Act 1975 (NSW), Dangerous Goods Act 1975 (NSW), Environmentally Hazardous
Chemicals Act 1985 (NSW), Waste Minimisation & Management Act 1995 (NSW),
Environmental Offenses & Penalties Act 1989 (NSW), Pollution Act 1970 (NSW),
Environmental Planning & Assessment Act 1979 (NSW) and the Environmental
Protection (Impact of Proposals) Act of 1974 Commonwealth of Australia), or
rule or regulation promulgated thereunder, any judicial or administrative order
or judgment or written administrative request to which the Company or any
Subsidiary is party or any of which are applicable to the Company or any
Subsidiary or the Properties (whether or not by consent), and any provision or
condition of any permit, license or other governmental operating authorization,
relating to (A) protection of the environment, persons or the public welfare
from actual or potential exposure for the effects of exposure to any actual or
potential release, discharge, spill or emission (whether past or present) of,
or regarding the manufacture, processing, production, gathering,
transportation, importation, use, treatment, storage or disposal of, any
chemical, raw material, pollutant, contaminant or toxic, corrosive, hazardous,
or non-hazardous substance or waste, including petroleum; (B) occupational or
public health or safety; or (C) planning.

       "Equivalent Amount" in one currency (the "first currency") of an amount
in another currency (the "other currency") means the amount of the first
currency which is required to purchase such amount of the other currency





                                       6
<PAGE>   13
at the rate determined on the basis of the Spot Rate of Exchange for the other
currency against the first currency at the time of determination.

       "Eurodollar Advance" means a Revolving Advance which bears interest at a
Eurodollar Rate.

       "Eurodollar Base Rate" means, with respect to a Eurodollar Advance for
the relevant Interest Period, (a) the rate determined by the Australian
Administrative Agent to be the arithmetic mean of the rates displayed on the
Reuters screen LIBO page for a term equivalent or approximate equivalent to
that Interest Period for the value date which is the first day of that Interest
Period; or (b) if (i) for any reason there are no rates displayed for a term
equivalent or approximate equivalent to that Interest Period or (ii) the basis
on which those rates are displayed is changed and in the opinion of the
Australian Administrative Agent those rates cease to reflect the Australian
Lenders' cost of funding to the same extent as at the date of this Agreement,
then the "Eurodollar Base Rate" will be (x) if all Australian Lenders and the
Company agree to such a rate, the rate determined by the Australian
Administrative Agent to be the appropriate equivalent having regard to
prevailing market conditions, or (y) if no agreement as contemplated in (x)
above is reached by 4:00 p.m. (Sydney time) on the day prior to the first day
of the relevant Interest Period, the rate determined by the Australian
Administrative Agent to be the average of the rates quoted to it by three
leading banks selected by it in the London interbank market at or about 11 a.m.
(London time) two Business Days before that Interest Period for the making of
deposits in U.S. Dollars with other leading banks in the London interbank
market for a term equivalent or approximately equivalent to that Interest
Period.  The Eurodollar Base Rate shall be rounded, if not a whole number
multiple of 1/16 of 1%, to the next higher 1/16 of 1%.

       "Eurodollar Loan" means a Loan which bears interest at a Eurodollar
Rate.

       "Eurodollar Rate" means, with respect to a Eurodollar Loan or Eurodollar
Advance for each day during the relevant Interest Period, the sum of (i) the
Eurodollar Base Rate applicable to that Interest Period plus (ii) the
Eurodollar Spread applicable to that day.  The Eurodollar Rate shall be
rounded, if not a whole number multiple of 1/16 of 1%, to the next higher 1/16
of 1%.

       "Eurodollar Spread" means, on any date and with respect to each
Eurodollar Advance, the applicable rate per annum set forth in Schedule A based
on the applicable Rating Level and Debt/Capitalization Ratio on such date.

       "Excluded Principal Debt" shall have the meaning ascribed to such term
in the U.S. Credit Agreement (without amendment except as permitted pursuant to
the Intercreditor Agreement).

       "First Chicago" means The First National Bank of Chicago in its
individual capacity, and its successors and assigns.

       "Global Administrative Agent" means The First National Bank of Chicago
or any Affiliate thereof in its capacity as global administrative agent for the
Combined Lenders pursuant to Article XV, and not in its individual capacity as
a U.S. Lender or in its capacity as an Engineering Bank and any successor
Global Administrative Agent appointed pursuant to Article XV.

       "Global Borrowing Base" shall have the meaning ascribed to such term in
the U.S. Credit Agreement (without amendment except as permitted pursuant to
the Intercreditor Agreement).

       "Global Credit Facility Debt" shall have the meaning ascribed to such
term in the U.S. Credit Agreement (without amendment except as permitted
pursuant to the Intercreditor Agreement).

       "Global Effective Date" means a date agreed upon by the Parent, the
Company, the Arrangers, the Australian Administrative Agent and the Global
Administrative Agent as the date on which the conditions precedent set forth in
Section 7.1 of this Agreement have been satisfied.





                                       7
<PAGE>   14
       "Global Effectiveness Notice" means a notice and certificate of the
Parent and the Company properly executed by an Authorized Officer of each the
Parent and the Company addressed to the Combined Lenders and delivered to the
Global Administrative Agent, in sufficient number of counterparts to provide
one for each Combined Lender and each Agent, whereby the Parent and the Company
certify satisfaction of all the conditions precedent to the effectiveness under
Section 7.1 of this Agreement, under Section 7.1 of the Canadian Credit
Agreement and under Section 7.1 of the U.S. Credit Agreement.

       "Global Loan Documents" means the U.S. Loan Documents, the Australian
Loan Documents, the Canadian Loan Documents, the Intercreditor Agreement and
Indemnity Agreements, together with all exhibits, schedules and attachments
thereto, and all other agreements, documents, certificates, financing
statements and instruments from time to time executed and delivered pursuant to
or in connection with any of the foregoing.

       "Guaranteed Obligation" means, with respect to any Person as of the time
a determination thereof is to be made (without duplication), (i) any
obligation, contingent or otherwise, of any such Person whether as guarantor,
surety or otherwise with respect to any Indebtedness (other than Indebtedness
for which the Company or any Borrowing Base Subsidiary of the Company is the
primary obligor), and (ii) any obligation to a foreign government or foreign
governmental agency under which such Person must either perform or pay a sum of
money in lieu of performance; provided, however, that any obligation of any
Person which is Indebtedness of the Company or one or more of its Borrowing
Base Subsidiaries shall not be a Guaranteed Obligation of such Person for
purposes of this Agreement; and provided further that obligations pursuant to
any oil, gas and/or mineral lease, farm-out agreement, division order, contract
for the sale, exchange or processing of oil, gas and/or other hydrocarbons,
unitization and pooling declaration and agreement, operating agreement,
development agreement, area of mutual interest agreement, marketing agreement
or arrangement, forward sales of Hydrocarbons and other agreements which are
customary in the oil, gas and other mineral exploration, development and
production business and in the business of processing of gas and gas condensate
production for the extraction of products therefrom are not Guaranteed
Obligations for purposes of this definition.

       "Guarantor" means any Subsidiary of the Company which is a guarantor
pursuant to a Guaranty in favor of the Agents and the Australian Lenders
delivered pursuant to Section 9.11.

       "Guaranty" means each deed of guaranty delivered pursuant to either
Section 7.1 or Section 9.11, or as required by the definition of "Change of
Control", in each case as such guaranty may from time to time be amended,
supplemented, restated, reaffirmed or otherwise modified.

       "Hazardous Material" means (a) any "hazardous substance," as defined by
CERCLA; (b) any "hazardous waste," as defined by the Resource Conservation and
Recovery Act, as amended; (c) any petroleum, crude oil or any fraction thereof;
(d) any hazardous, dangerous or toxic chemical, material, waste or substance
within the meaning of any Environmental Law; (e) any radioactive material,
including any naturally occurring radioactive material, and any source, special
or by-product material as defined in 42 U.S.C. Section  2011 et. seq., and any
amendments or reauthorizations thereof; (f) asbestos-containing materials in
any form or condition; or (g) polychlorinated biphenyls in any form or
condition.

       "Highest Lawful Rate" is defined in Section 3.2.

       "Hydrocarbon Interests" means leasehold and other interests in or under
leases with respect to property located in Australia and any other countries
acceptable to the Combined Required Lenders, mineral fee interests, production
sharing contracts, overriding royalty and royalty interests, net profit
interests and production payment interests, insofar and only insofar as such
interests relate to Hydrocarbons located in the United States of America,
Canada, Australia and any other countries acceptable to the Combined Required
Lenders, including any reserved or residual interests of whatever nature.





                                       8
<PAGE>   15
       "Hydrocarbons" means oil, gas and all other liquid or gaseous
hydrocarbons and all products refined therefrom and all other minerals and
substances, including sulfur, geothermal steam, water, carbon dioxide, helium
and any and all other minerals, ores or substances of value and the products
and proceeds therefrom.

       "include" or "including" means including without limiting the generality
of any description preceding such terms, and, for purposes of this Agreement
and each other Australian Loan Document, the parties hereto agree that the rule
of ejusdem generis shall not be applicable to limit a general statement, which
is followed by or referable to an enumeration of specific matters, to matters
similar to the matters specifically mentioned.

       "Indebtedness" means, with respect to a Person at any time, such
Person's (i) obligations for borrowed money, (ii) obligations representing the
deferred purchase price of property or services, including obligations payable
out of Hydrocarbon production, other than accounts payable arising in the
ordinary course of such Person's business payable on terms customary in the
trade, (iii) obligations, whether or not assumed, secured by Liens (other than
Liens permitted by Section 11.5, clauses (a) through (d) or clauses (f) through
(m)) or payable out of the proceeds of production from property now or
hereafter owned or acquired by such Person, (iv) obligations (other than the
obligations previously described in clauses (i), (ii), or (iii) of this
definition) which are evidenced by notes, bonds, debentures, bankers'
acceptances, or other instruments, (v) Capitalized Lease Obligations, (vi)
liabilities under interest rate swap, exchange, collar or cap agreements and
all other agreements or arrangements designed to protect such Person against
fluctuations in interest rates or currency exchange rates, (vii) net
liabilities under commodity hedge, commodity swap, exchange, collar or cap
agreements, fixed price agreements and all other agreements or arrangements
designed to protect a person against fluctuations in oil or gas prices provided
that, each such contract will be marked-to-market and the gain or loss on each
such contract and any amounts on deposit with any counterparties or exchanges
shall be included in determining such Person's net liability with respect to
such contract, (viii) obligations, contingent or otherwise, relative to the
amount of all letters of credit, whether or not drawn, and (ix) all Guaranteed
Obligations of such Person in respect of any of the foregoing; provided,
however, that "Indebtedness" shall not include any amounts included as deferred
credits on the financial statements of such Person or of a consolidated group
including such Person, determined in accordance with Agreement Accounting
Principles; provided further that for purposes of the foregoing clauses (ii),
(iii) and (ix) and the "other instruments" described in the foregoing clause
(iv), obligations pursuant to any oil, gas and/or mineral lease, farm-out
agreement, division order, contract for the exchange or processing of oil, gas
and/or other hydrocarbons, unitization and pooling declaration and agreement,
operating agreement, development agreement, area of mutual interest agreement,
marketing agreement or arrangement, forward sales of Hydrocarbons, and other
agreements which are customary in the oil, gas and other mineral exploration,
development and production business and in the business of processing of gas
and gas condensate production for the extraction of products therefrom shall
not be Indebtedness.

       "Indemnified Person" is defined in Section 14.7.

       "Indemnity Agreements" means (i) that certain letter agreement, dated as
of October 31, 1996, among the Company, the Global Administrative Agent, the
Australian Administrative Agent, the Canadian Administrative Agent and the
Combined Lenders, (ii) that certain letter agreement, dated as of October 31,
1996, among the Canadian Borrower, the Global Administrative Agent the
Australian Administrative Agent, the Canadian Administrative Agent and the
Combined Lenders, and (iii) that certain letter agreement, dated as of October
31, 1996, among the Parent, the Global Administrative Agent, the Australian
Administrative Agent, the Canadian Administrative Agent and the Combined
Lenders, each in form and substance acceptable to the Agents and the Arrangers,
as each may be amended, supplemented, restated or otherwise modified from time
to time.

       "Intercreditor Agreement" means that certain Intercreditor Agreement of
even date herewith among the Global Administrative Agent, the Co-Agent (as
defined in the U.S. Credit Agreement), the Canadian Administrative Agent, the
Australian Administrative Agent, the Arrangers and the Combined Lenders, in
form and substance acceptable to the Agents and the Arrangers, as it may be
amended, supplemented, restated or otherwise modified and in effect from time
to time.





                                       9
<PAGE>   16
       "Interest Period" means, with respect to a Eurodollar Advance, a period
of one (1), two (2), three (3) or six (6) months commencing on a Business Day
selected by the Company pursuant to this Agreement.  Such Interest Period shall
end on (but exclude) the day which corresponds numerically to such date one
(1), two (2), three (3) or six (6) thereafter, provided, however, that if there
is no such numerically corresponding day in such next, second, third or sixth
succeeding month, such Eurodollar Interest Period shall end on the last
Business Day of such next, second or third succeeding month.  If an Interest
Period would otherwise end on a day which is not a Business Day, such Interest
Period shall end on the next succeeding Business Day; provided, however, that
if said next succeeding Business Day falls in the next month, such Interest
Period shall end on the immediately preceding Business Day.

       "Investment" means, with respect to any Person, any loan, advance,
extension of credit (excluding accounts receivable arising in the ordinary
course of business on terms customary in the trade) or contribution of capital
by such Person to any other Person or any investment in, or purchase or other
acquisition of, the stock, notes, debentures or other securities of any other
Person made by such Person.  The amount of any Investment shall be the original
principal or capital amount thereof less all returns of principal or equity
thereon (and without adjustment by reason of the financial condition of such
other Person) and shall, if made by the transfer or exchange of property other
than cash, be deemed to have been made in an original principal or capital
amount equal to the fair market value of such property.

       "Judgment Currency" is defined in Section 6.9(b).

       "Lending Installation" means any office, branch, subsidiary or affiliate
of any Australian Lender or the Australian Administrative Agent.

       "Lien" means any interest in assets or property securing an obligation
owed to, or a claim by, a Person other than the owner of the asset or property,
whether such interest is based on the common law, statute or contract, and
whether such obligation or claim is fixed or contingent, and including any
security interest, mortgage, pledge, lien, claim, charge, encumbrance, contract
for deed, installment sales contract, production payment, lessor's interest
under a Capitalized Lease or analogous instrument, in, of or on any Person's
assets or properties in favor of any other Person.

       "Loan" means, with respect to a Australian Lender, a revolving loan made
by such Australian Lender pursuant to Sections 2.1 and 3.3 as the result of a
Borrowing Notice from the Company requesting an Advance.

       "Material Adverse Effect" means with respect to any matter that such
matter (i) could reasonably be expected to materially and adversely affect the
assets, business, properties, condition (financial or otherwise), prospects, or
results of operations of the Company and its Subsidiaries, taken as a whole, or
the value or condition of the Properties taken as a whole, or the ability of
the Company or any Subsidiary of the Company which is a party to a Australian
Loan Document to perform its respective obligations under any of the Australian
Loan Documents to which it is party, or (ii) has been brought by or before any
court or arbitrator or any governmental body, agency or official, and draws
into question or otherwise has or reasonably could be expected to have a
material adverse effect on the validity or enforceability of any material
provision of any Australian Loan Document against any obligor party thereto or
the rights, remedies and benefits available to the Agents and the Australian
Lenders under the Australian Loan Documents, respectively.

       "Moody's" means Moody's Investors Service, Inc. and any successor
thereto that is a nationally-recognized rating agency.

       "1996 Engineers' Report" means those certain Supplemental Reserve
Reports as of January 1, 1996 of the Parent's engineers, Ryder Scott Company
Petroleum Engineers, dated as of April 16, 1996, with respect to the
Properties, copies of which have been delivered to the Global Administrative
Agent, the Australian Administrative Agent and each of the Australian Lenders.





                                       10
<PAGE>   17
       "Non-Borrowing Base Subsidiary" means, at any time, any Subsidiary of
the Company which is not a Borrowing Base Subsidiary.

       "Note" means a promissory note in substantially the form of Exhibit A
hereto (with appropriate insertions and deletions), duly executed and delivered
to the Australian Administrative Agent by the Company and payable to the order
of a Australian Lender in the amount of its Commitment, including any
amendment, modification, renewal or replacement of such promissory note.

       "Notice of Substitution" is defined in Section 17.3(b).

       "Obligations" means all unpaid principal of and accrued and unpaid
interest on the Notes, all accrued and unpaid facility fees, and all other
obligations of the Company or any Subsidiary to any Australian Lender or any
Agent, whether or not contingent, arising under or in connection with any of
the Australian Loan Documents, and all obligations in respect of any interest
rate swap or interest rate cap or collar agreement or other interest rate
hedging agreement entered into by the Company or any Subsidiary with any
Australian Lender.

       "or" as used in this Agreement is not exclusive.

       "Original Termination Date" means October 31, 2001.

       "Other Currency" is defined in Section 6.9(a).

       "Parent" means Apache Corporation, a corporation organized under the
laws of the State of Delaware.

       "Parent's Engineers' Report" shall have the meaning ascribed to
"Company's Engineers' Report" in the U.S. Credit Agreement (without amendment
except as permitted pursuant to the Intercreditor Agreement).

       "Participant" is defined in Section 17.2(a).

       "Payment Date" means the second day of January and the first day of each
April, July and October of each calendar year, commencing January 2, 1997.

       "Person" means any corporation, limited liability company, natural
person, firm, joint venture, partnership, trust, unincorporated organization,
enterprise, government or any department or agency of any government.

       "Projections" means the Parent's Operations and Financial Summary Data
consisting of the Company Case dated April 19, 1996 and the Liquidating Case
dated April 19, 1996.

       "Properties" shall have the meaning ascribed to such term in the U.S.
Credit Agreement (without amendment except as permitted pursuant to the
Intercreditor Agreement).

       "Purchaser" is defined in Section 17.3(a).

       "Qualified Long Term Rating" means in respect of any Person, a Person
which has senior, unsecured long-term debt rated either A- or higher by S&P or
A(3) or higher by Moody's.

       "Rating Level" shall have the meaning ascribed to such term in the U.S.
Credit Agreement (without amendment except as permitted pursuant to the
Intercreditor Agreement).

       "Reference Lenders" means First Chicago and Chase.





                                       11
<PAGE>   18
       "Regulation U" means any of Regulations G, T, U or X of the Board of
Governors of the Federal Reserve System from time to time in effect and shall
include any successor or other regulations or official interpretations of said
Board of Governors or any successor Person relating to the extension of credit
for the purpose of purchasing or carrying margin stocks applicable to member
banks of the Federal Reserve System or any successor Person.

       "Release" means a "release," as such term is defined in CERCLA.

       "Replacement Lender" is defined in Section 2.2.

       "Required Lenders" means, as of any date of determination, Australian
Lenders having in the aggregate at least 66-2/3% of the Aggregate Commitment
or, if the Aggregate Commitment has been terminated, Australian Lenders holding
at least 66-2/3% of the then outstanding principal amount of the Loans.

       "Revolving Advance" means a borrowing hereunder consisting of the
aggregate amount of the several Loans made by the Australian Lenders or any of
them to the Company on the same Borrowing Date for the same Interest Period.

       "S&P" means Standard & Poor's Ratings Service and any successor thereto
that is a nationally-recognized rating agency.

       "Sale" means any sale, transfer, assignment, lease, conveyance,
exchange, swap or other disposition.

       "Schedules" means Schedules A, 8.8, 11.1 and 11.10 hereto.

       "Solvent" means, with respect to any Person at any time, a condition
under which

              (a)    the fair saleable value of such Person's assets is, on the
       date of determination, greater than the total amount of such Person's
       liabilities (including contingent and unliquidated liabilities) at such
       time;

              (b)    such Person is able to pay all of its debts as and when
       they become due and payable; and

              (c)    such Person does not have unreasonably small capital with
       which to conduct its business.

For purposes of this definition (i) the amount of a Person's contingent or
unliquidated liabilities at any time shall be that amount which, in light of
all the facts and circumstances then existing, represents the amount which can
reasonably be expected to become an actual or matured liability; (ii) the "fair
saleable value" of an asset shall be the amount which may be realized within a
reasonable time either through collection or sale of such asset at its regular
market value; and (iii) the "regular market value" of an asset shall be the
amount which a capable and diligent business person could obtain for such asset
from an interested buyer who is willing to purchase such asset under ordinary
selling conditions.

       "Spot Rate of Exchange" means, on any date, the Australian
Administrative Agent's rate of exchange between two currencies at or about noon
(Sydney time) on that day for value on the Second Business Day after that date.

       "Subsidiary" means, with respect to any Person, any other Person more
than 50% of the outstanding voting securities of which shall at the time be
owned or controlled, directly or indirectly, by such Person; provided, that
with respect to the Company, Subsidiaries shall include any Person more than
50% of the outstanding voting





                                       12
<PAGE>   19
securities of which shall at the time be owned or controlled, directly or
indirectly, by the Company or by one or more Subsidiaries or by the Company and
one or more Subsidiaries.

       "Substitution Certificate" means a certificate executed by a retiring
Australian Lender and a substituting Australian Lender pursuant to Section 17.3
substantially in the form of Exhibit D hereto.

       "Termination Date" means the Original Termination Date, or such other
later date as may result from any extension requested by the Company and
consented to by the Australian Lenders pursuant to Section 2.2.

       "Transferee" is defined in Section 17.4.

       "United States" or "U.S." means the United States of America, its fifty
states and the District of Columbia.

       "Unmatured Default" means an event which but for the lapse of time or
the giving of notice, or both, would constitute a Default.

       "U.S. Commitments" has the meaning of the term "Aggregate Commitment" as
defined in the U.S. Credit Agreement.

       "U.S. Credit Agreement" means that certain Fourth Amended and Restated
Credit Agreement of even date herewith among the Parent, the U.S. Lenders, The
First National Bank of Chicago, as Global Administrative Agent, the Chase
Manhattan Bank, as Co-Agent, First Chicago Capital Markets, Inc., as Arranger,
and Chase Securities Inc., as Arranger, as it may be amended, supplemented,
restated or otherwise modified from time to time.

       "U.S. Lenders" means the financial institutions listed on the signature
pages of the U.S. Credit Agreement and their respective successors and assigns.

       "U.S. Loan Documents" means the U.S. Credit Agreement, any notes, any
guaranties, any assignment agreements, the agreement with respect to fees, the
Intercreditor Agreement and the Indemnity Agreements, together with all
exhibits, schedules and attachments thereto, and all other agreements,
documents, certificates, financing statements and instruments from time to time
executed and delivered pursuant to or in connection with any of the foregoing.

       1.2.   Use of Defined Terms.  Unless otherwise defined or the context
otherwise requires, terms for which meanings are provided in this Agreement
shall have such meanings when used in each Schedule and Exhibit hereto and in
each Note, Borrowing Notice, Continuation Notice, Australian Loan Document,
notice and other communication delivered from time to time in connection with
this Agreement or any other Australian Loan Document.

       1.3.   Cross References.  Unless otherwise specified, references in this
Agreement and in each other Australian Loan Document to any Article, Section,
Exhibit or Schedule are references to such Article or Section of or Schedule or
Exhibit to this Agreement or such other Australian Loan Document, as the case
may be, and, unless otherwise specified, references in any Article, Section or
definition to any clause are references to such clause of such Article, Section
or definition.

       1.4.   Accounting and Financial Determination.  Unless otherwise
specified, all accounting terms used herein or in any other Australian Loan
Document shall be interpreted, all accounting determinations and computations
hereunder or thereunder, and all financial statements required to be delivered
hereunder or thereunder, shall be prepared in accordance with, the Agreement
Accounting Principles.

       1.5.   Currency References.  Unless otherwise specified herein, all
dollar amounts expressed herein shall refer to U.S. Dollars.  Except as
otherwise herein specified, for purposes of calculating compliance with the





                                       13
<PAGE>   20
terms of this Agreement and the other Australian Loan Documents (including for
purposes of calculating compliance with the covenants), any other obligation or
calculation shall be converted to its Equivalent Amount in U.S. Dollars.


                                   ARTICLE II

                                  THE FACILITY

       2.1.   The Facility.

       (a)    Description of Facility.  On the terms and subject to the
conditions set forth in this Agreement (including satisfaction of the
conditions precedent set forth in Article VII), the Australian Lenders grant to
the Company a revolving credit facility pursuant to which, and upon the terms
and conditions herein set out, each Australian Lender severally agrees to make
Loans to the Company in accordance with this Section and Article III.  Apache
Energy Limited and Apache Oil Australia shall be jointly and severally liable
for all Obligations under this Agreement and the other Australian Loan
Documents.

       (b)    Facility Amount.  In no event may the aggregate principal amount
of all outstanding Loans exceed the lesser of the Aggregate Commitment or the
Global Borrowing Base and no Australian Lender shall be obligated to make any
Loan hereunder if, after giving effect to such Loan, the sum of the aggregate
outstanding principal amount of all Borrowing Base Debt would exceed the Global
Borrowing Base; provided that if the Company shall have requested an Advance
the proceeds of which will be used to repay outstanding Borrowing Base Debt and
so long as no Default or Unmatured Default shall have occurred and be
continuing, then, with respect to the calculations set forth in this
subsection, such Advance shall not be included within the amount of outstanding
Loans and outstanding Borrowing Base Debt until 5:00 p.m. (U.S. Central Time
("Central Time")) on the day of such Advance; provided, further, that the
continuation of any Eurodollar Loan as a Eurodollar Loan with an Interest
Period of one month or any such shorter period permitted pursuant to the
following proviso shall not be deemed to be a borrowing of a Loan for purposes
of this subsection or an Advance during the applicable period provided in
Section 4.1(a) for the Company to make a mandatory payments because of a Debt
Limit Excession; provided, further, that, upon the request of the Company for
the continuation of a Eurodollar Loan as a Eurodollar Loan with an Interest
Period of less than one month, the Australian Administrative Agent, after
obtaining the consent of the Australian Lenders, will use reasonable efforts to
continue such a Eurodollar Loan as a Eurodollar Loan of the requested duration.


       (c)    All Loans.  Subject to the terms and conditions of this
Agreement, the Company may borrow, repay and reborrow all Loans made under this
Agreement in U.S. Dollars at any time prior to the Termination Date.  The
obligations of the Australian Lenders to make Loans shall cease on the
Termination Date, and any and all Loans outstanding on such date shall be due
and payable on such date.

       (d)    Revolving Advances.  Each Revolving Advance hereunder shall
consist of borrowings made from the several Australian Lenders ratably in
proportion to the amounts of their respective Commitments.

       2.2.   Extension of Termination Date and of Aggregate Commitment.

       (a)    Subject to the other provisions of this Agreement, the Aggregate
Commitment shall be effective for an initial period from the Global Effective
Date to the Original Termination Date; provided that the Termination Date, and
concomitantly the Aggregate Commitment, may be extended for successive one year
periods expiring on the date which is one (1) year from the then scheduled
Termination Date.  If the Company shall request in an Annual Certificate of
Extension delivered to the Global Administrative Agent and the Australian
Administrative Agent concurrently with delivery by the Parent under the U.S.
Credit Agreement of the Approved Engineers' Report delivered prior to the then
scheduled Termination Date that the Termination Date be extended for one year
from the then scheduled Termination Date, then the Australian Administrative
Agent shall promptly notify each Australian





                                       14
<PAGE>   21
Lender of such request and each Australian Lender shall notify the Australian
Administrative Agent, no later than the next date by which each Australian
Lender is required, pursuant to Section 2.3(a) of the U.S. Credit Agreement, to
approve or disapprove the Engineering Banks' determination of the Global
Borrowing Base, and whether such Australian Lender, in the exercise of its sole
discretion, will extend the Termination Date for such one year period.  Any
Australian Lender which shall not timely notify the Australian Administrative
Agent whether it will extend the Termination Date shall be deemed to not have
agreed to extend the Termination Date.  No Australian Lender shall have any
obligation whatsoever to agree to extend the Termination Date.  Any agreement
to extend the Termination Date by any Australian Lender shall be irrevocable,
except as provided in Section 2.2(c).

       (b)    If all the Australian Lenders notify the Australian
Administrative Agent pursuant to clause (a) of this Section 2.2 of their
agreement to extend the Termination Date, then the Australian Administrative
Agent shall so notify the Global Administrative Agent, each Australian Lender
and the Company, and such extension shall be effective without other or further
action by any party hereto for such additional one year period.

       (c)    If Australian Lenders constituting at least the Required Lenders
approve the extension of the then scheduled Termination Date (such Australian
Lenders agreeing to extend the Termination Date herein called the "Accepting
Lenders"), and if one or more of the Australian Lenders shall notify, or be
deemed to notify, the Australian Administrative Agent pursuant to clause (a) of
this Section 2.2 that they will not extend the then scheduled Termination Date
(such Australian Lenders herein called the "Declining Lenders"), then (A) the
Australian Administrative Agent shall promptly so notify the Company and the
Accepting Lenders, (B) the Accepting Lenders shall, upon the Company's election
to extend the then scheduled Termination Date in accordance with clause (i) or
(ii) below, extend the then scheduled Termination Date and (C) the Company
shall pursuant to a notice delivered to the Global Administrative Agent, the
Australian Administrative Agent, the Accepting Lenders and the Declining
Lenders, no later than the tenth day following the date by which each
Australian Lender is required, pursuant to Section 2.2(a), to approve or
disapprove the requested extension of the Aggregate Commitment, either:

              (i)    elect to extend the Termination Date with respect to the
       Accepting Lenders and direct the Declining Lenders to terminate their
       Commitments, which termination shall become effective on the date which
       would have been the Termination Date except for the operation of this
       Section 2.2.  On such date, (x) the Company shall deliver a notice of
       the effectiveness of such termination to the Declining Lenders with a
       copy to the Global Administrative Agent and the Australian
       Administrative Agent and (y) the Company shall pay in full in
       immediately available funds all Obligations of the Company owing to the
       Declining Lenders and (z) upon the occurrence of the events set forth in
       clauses (x) and (y), the Declining Lenders shall each cease to be a
       Australian Lender hereunder for all purposes, other than for purposes of
       Article VI, Section 14.7 and the Indemnity Agreement, and shall cease to
       have any obligations or any Commitment hereunder, other than to the
       Agents pursuant to Section 15.8, and the Australian Administrative Agent
       shall promptly notify the Accepting Lenders, the Global Administrative
       Agent and the Company of the new Aggregate Commitment; or

              (ii)   elect to extend the Termination Date with respect to the
       Accepting Lenders and, prior to or no later than the then scheduled
       Termination Date, (A) to replace one or more of the Declining Lender or
       Declining Lenders with another lender or lenders reasonably acceptable
       to the Australian Administrative Agent and the Global Administrative
       Agent (such lenders herein called the "Replacement Lenders") and (B) the
       Company shall pay in full in immediately available funds all Obligations
       of the Company owing to the Declining Lenders which are not being
       replaced, as provided in clause (i) above; provided that (x) the
       Replacement Lender or Replacement Lenders shall purchase, and the
       Declining Lender or Declining Lenders shall sell, the Notes of the
       Declining Lender or Declining Lenders being replaced and the Declining
       Lender's or Declining Lenders' rights hereunder without recourse or
       expense to, or warranty by, such Declining Lender or Declining Lenders
       being replaced for a purchase price equal to the aggregate outstanding
       principal amount of the Note or Notes payable to such Declining Lender
       or Declining Lenders plus any accrued but unpaid interest on such Note
       or Notes and accrued but unpaid fees





                                       15
<PAGE>   22
       in respect of such Declining Lender's or Declining Lenders' Loans and
       Commitments hereunder, and (y) all obligations of the Company owing
       under or in connection with this Agreement to the Declining Lender or
       Declining Lenders being replaced (including, without limitation, such
       increased costs, breakage fees payable under Section 6.3 and all other
       costs and expenses payable to each such Declining Lender) shall be paid
       in full in immediately available funds to such Declining Lender or
       Declining Lenders concurrently with such replacement, and (z) upon the
       payment of such amounts referred to in clauses (x) and (y), the
       Replacement Lender or Replacement Lenders shall each constitute an
       Australian Lender hereunder and the Declining Lender or Declining
       Lenders being so replaced shall no longer constitute an Australian
       Lender (other than for purposes of Article VI, Section 14.7 and the
       Indemnity Agreement), and shall no longer have any obligations
       hereunder, other than to the Agents pursuant to Section 15.8; or

              (iii)  elect to revoke and cancel the extension request in such
       Annual Certificate of Extension by giving notice of such revocation and
       cancellation to the Global Administrative Agent and the Australian
       Administrative Agent (which shall promptly notify the Australian Lenders
       thereof) no later than the tenth day following the date by which each
       Australian Lender is required, pursuant to Section 2.2(a), to approve or
       disapprove the requested extension of the Termination Date, and
       concomitantly the Aggregate Commitment.

       If the Company fails to timely provide the election notice referred to
in this clause(c), the Company shall be deemed to have revoked and cancelled
the extension request in the Annual Certificate of Extension and to have
elected not to extend the Termination Date, and the concomitant Aggregate
Commitment, with respect to the Accepting Lenders, and, on the then scheduled
Termination Date, the Company shall repay in full all Obligations under the
Australian Loan Documents.

       2.3.   [Intentionally Omitted].

       2.4.   Facility Fee; Other Fees.

       (a)    Facility Fee.  The Company agrees to pay to the Australian
Administrative Agent for the account of each Australian Lender a facility fee
for the period from (and including) the date hereof to the Termination Date, at
the applicable rates per annum set forth in Schedule A based on the applicable
Rating Level on such Australian Lender's ratable portion of the Aggregate
Commitment as in effect from time to time.

Facility fees accruing pursuant to this Section 2.4(a) shall be payable in
arrears on each Payment Date hereafter and on the Termination Date.  The
effective date for any change in the Facility Fees accruing pursuant to this
Section 2.4(a) shall be any date on which a change in the applicable Rating
Level occurs.

       (b)    Agents' Fees.  The Company shall pay to each Agent for its own
respective account such fees in connection with this Agreement as previously
have been agreed in writings between the Company and any such Agent (as such
writings may hereafter be amended, supplemented, restated or otherwise modified
and in effect).


                                  ARTICLE III

                                BORROWING; ETC.

       3.1.   Method of Borrowing.  Not later than 2:00 p.m. (New York time) on
each Borrowing Date for Loans, each Australian Lender shall make available its
Loan or Loans, in funds immediately available, to the Australian Administrative
Agent by transferring or depositing such funds to the bank or account which the
Australian Administrative Agent may specify in writing for that purpose from
time to time.  The Australian Administrative Agent will make the funds so
received from the Australian Lenders with respect to Loans available to the
Company





                                       16
<PAGE>   23
by transferring or depositing such funds to the bank or account in Sydney or
outside of Australia which the Company may specify in writing for that purpose.

       3.2.   Maximum Interest.  It is the intention of the parties hereto to
conform strictly to applicable interest, usury and criminal laws and, anything
herein to the contrary notwithstanding, the obligations of the Company to an
Australian Lender or any Agent under this Agreement shall be subject to the
limitation that payments of interest shall not be required to the extent that
receipt thereof would be contrary to provisions of law applicable to such
Australian Lender or Agent limiting rates of interest which may be charged or
collected by such Australian Lender or Agent.  Accordingly, if the transactions
contemplated hereby would be illegal, unenforceable, usurious or criminal under
laws applicable to an Australian Lender or Agent (including the laws of any
jurisdiction whose laws may be mandatorily applicable to such Australian Lender
or Agent notwithstanding anything to the contrary in this Agreement or any
other Australian Loan Document but subject to Section 3.8 hereof) then, in that
event, notwithstanding anything to the contrary in this Agreement or any other
Australian Loan Document, it is agreed as follows:

              (a)    the provisions of this Section 3.2 shall govern and
       control;

              (b)    the aggregate of all consideration which constitutes
       interest under applicable law that is contracted for, taken, reserved,
       charged or received under this Agreement, or under any of the other
       aforesaid agreements or otherwise in connection with this Agreement by
       such Australian Lender or Agent shall under no circumstances exceed the
       maximum amount of interest allowed by applicable law (such maximum
       lawful interest rate, if any, with respect to each Australian Lender and
       the Agent herein called the "Highest Lawful Rate"), and any excess shall
       be cancelled automatically and if theretofore paid shall be credited to
       the Company by such Australian Lender or Agent (or, if such
       consideration shall have been paid in full, such excess refunded to the
       Company);

              (c)    all sums paid, or agreed to be paid, to such Australian
       Lender or Agent for the use, forbearance and detention of the
       indebtedness of the Company to such Australian Lender or Agent hereunder
       or under any Australian Loan Document shall, to the extent permitted by
       laws applicable to such Australian Lender or Agent, as the case may be,
       be amortized, prorated, allocated and spread throughout the full term of
       such indebtedness until payment in full so that the actual rate of
       interest is uniform throughout the full term thereof;

              (d)    if at any time the interest provided pursuant to this
       Section 3.2 or any other clause of this Agreement or any other
       Australian Loan Document, together with any other fees or compensation
       payable pursuant to this Agreement or any other Australian Loan Document
       and deemed interest under laws applicable to such Australian Lender or
       Agent, exceeds that amount which would have accrued at the Highest
       Lawful Rate, the amount of interest and any such fees or compensation to
       accrue to such Australian Lender or Agent pursuant to this Agreement
       shall be limited, notwithstanding anything to the contrary in this
       Agreement or any other Australian Loan Document, to that amount which
       would have accrued at the Highest Lawful Rate, but any subsequent
       reductions, as applicable, shall not reduce the interest to accrue to
       such Australian Lender or Agent pursuant to this Agreement below the
       Highest Lawful Rate until the total amount of interest accrued pursuant
       to this Agreement or such other Australian Loan Document, as the case
       may be, and such fees or compensation deemed to be interest equals the
       amount of interest which would have accrued to such Australian Lender or
       Agent if a varying rate per annum equal to the interest provided
       pursuant to any other relevant Section hereof (other than this Section
       3.2), as applicable, had at all times been in effect, plus the amount of
       fees which would have been received but for the effect of this Section
       3.2; and

              (e)    with the intent that the rate of interest herein shall at
       all times be lawful, and if the receipt of any funds owing hereunder or
       under any other agreement related hereto (including any of the other
       Australian Loan Documents) by such Australian Lender or Agent would
       cause such Australian Lender





                                       17
<PAGE>   24
       to charge the Company a criminal rate of interest, the Australian
       Lenders and the Agents agree that they will not require the payment or
       receipt thereof or a portion thereof which would cause a criminal rate
       of interest to be charged by such Australian Lender or Agent, as
       applicable, and if received such affected Australian Lender or Agent
       will return such funds to the Company so that the rate of interest paid
       by the Company shall not exceed a criminal rate of interest from the
       date this Agreement was entered into.

       3.3.   Method of Selecting Interest Periods for Loans.  The Company
shall select the Interest Period applicable to each Revolving Advance from time
to time.  The Company shall give the Australian Administrative Agent
irrevocable notice (a "Borrowing Notice") not later than noon (Sydney time) at
least three (3) Business Days before the Borrowing Date for each Eurodollar
Advance, specifying:

              (i)    that the Borrowing Notice is delivered under this
       Agreement,

              (ii)   the Borrowing Date, which shall be a Business Day, of such
       Revolving Advance,

              (iii)  the aggregate amount of such Revolving Advance,

              (iv)   the Interest Period applicable thereto, and

              (v)    an account or accounts in Sydney or outside of Australia
       for payment of the Advance previously designated to the Australian
       Administrative Agent by a written notice executed by an Authorized
       Officer of each of Apache Energy Limited and Apache Oil Australia.

Each Eurodollar Advance shall bear interest from and including the first day of
the Interest Period applicable thereto to (but not including) the last day of
such Interest Period at the interest rate determined from time to time as
applicable to such Eurodollar Advance.  The Company shall select Interest
Periods with respect to Eurodollar Advances so that it is not necessary to pay
a Eurodollar Advance prior to the last day of the applicable Interest Period in
order to make the mandatory repayment on the Termination Date.

       3.4.   [Intentionally Omitted].

       3.5.   Minimum Amount of Each Advance.  Each requested Advance shall be
in the minimum amount of $5,000,000 (and in multiples of $1,000,000 if in
excess thereof).  No more than seven (7) Advances will be outstanding under
this Agreement at any time.

       3.6.   Continuation Elections.  By providing a Continuation Notice to
the Australian Administrative Agent on or before noon (Sydney time) on a
Business Day, the Company may from time to time irrevocably elect, on not less
than three nor more than five Business Days' notice, that all, or any portion
in an aggregate minimum amount of $5,000,000 and an integral multiple of
$1,000,000 or the remaining balance of any Loans be continued as Eurodollar
Loans (in the absence of delivery of a Continuation Notice with respect to any
Eurodollar Loan at least three Business Days before the last day of the then
current Interest Period with respect thereto, such Eurodollar Loan shall, on
such last day, automatically continue as a Eurodollar Loan with an Interest
Period of one month.

       3.7.   Telephonic Notices.  The Company hereby authorizes the Australian
Lenders and the Australian Administrative Agent to extend Advances based on
telephonic notices made by any Person or Persons the Australian Administrative
Agent or any Australian Lender in good faith believes to be acting on behalf of
the Company.  The Company agrees to deliver promptly to the Australian
Administrative Agent a written confirmation of each telephonic notice signed by
an Authorized Officer.  If the written confirmation differs in any material
respect from the action taken by the Australian Administrative Agent and the
Australian Lenders, the records of the Australian Administrative Agent and the
Australian Lenders shall govern absent manifest error.





                                       18
<PAGE>   25
       3.8.   Rate after Maturity.  Any Advance not paid at maturity, whether
by acceleration or otherwise, shall bear interest for the remainder of the
applicable Interest Period, at the rate (including the Eurodollar Spread)
otherwise applicable to such Interest Period plus 2% per annum.

       3.9.   Interest Payment Dates; Determination of Interest and Fees.

       (a)    Interest Payment Dates.  Interest accrued on each Eurodollar
Advance shall be payable on the last day of its applicable Interest Period and
on any date on which such Eurodollar Advance is prepaid, whether due to
acceleration or otherwise.  Interest accrued on each Eurodollar Advance having
an Interest Period longer than three (3) months shall also be payable on the
last day of each three-month interval during such Interest Period.

       (b)    Determination of Interest and Fees.  Facility fees shall be
calculated for actual days elapsed on the basis of a 365- or, if applicable,
366-day year, and all other interest and fees shall be calculated for actual
days elapsed on the basis of a 360-day year.  Any change in the Eurodollar
Spread attributable to a change in the Debt/Capitalization Ratio, if any, shall
be effective on the forty-fifth (45th) day following the end of the calendar
quarter in which occurred a change in Debt/Capitalization Ratio.  Any change in
the Eurodollar Spread attributable to a change in the Company's applicable
Rating Level, if any, shall be effective on the same day as such change in the
Company's applicable Rating Level.

       3.10.  Notification of Advances, Interest Rates, Prepayments and
Commitment Reductions.  Promptly after receipt thereof, the Australian
Administrative Agent will notify each Australian Lender of the contents of each
commitment reduction notice (pursuant to Section 4.5), Borrowing Notice,
Continuation Notice, and repayment notice received by it hereunder.  The
Australian Administrative Agent will notify each Australian Lender of the
Eurodollar Rate applicable to each Eurodollar Advance promptly upon
determination of such Eurodollar Rate.

       3.11.  Non-Receipt of Funds by the Australian Administrative Agent.
Unless the Company or an Australian Lender, as the case may be, notifies the
Australian Administrative Agent prior to the date on which it is scheduled to
make payment to the Australian Administrative Agent of (i) in the case of an
Australian Lender, the proceeds of a Loan or (ii) in the case of the Company, a
payment of principal, interest, fees or other amounts to the Australian
Administrative Agent for the account of the Australian Lenders or any Agent,
that it does not intend to make such payment, the Australian Administrative
Agent may assume that such payment has been made.  The Australian
Administrative Agent may, but shall not be obligated to, make the amount of
such payment available to the intended recipient in reliance upon such
assumption.  If such Australian Lender or the Company, as the case may be, has
not in fact made such payment to the Australian Administrative Agent, the
recipient of such payment shall, on demand by the Australian Administrative
Agent, repay to the Australian Administrative Agent the amount so made
available together with interest thereon in respect of each day during the
period commencing on the date such amount was so made available by the
Australian Administrative Agent until the date the Australian Administrative
Agent recovers such amount at a rate per annum equal to (i) in the case of
payment by an Australian Lender, a rate determined by the Australian
Administrative Agent, in line with its usual practice, for advances of similar
duration to financial institutions of the standing of the Australian Lender or
(ii) in the case of payment by the Company, the interest rate applicable to the
relevant Loan or, in the case of payments in respect of interest, fees or other
amounts, at a rate equal to the Australian Administrative Agent's cost of
funding such payments of interest, fees or other amounts.





                                       19
<PAGE>   26
                                   ARTICLE IV

              MANDATORY PAYMENTS; REDUCTIONS OF COMMITMENTS; ETC.

       4.1.   Mandatory Prepayments.

       (a)    Mandatory Prepayments.  To the extent that other payments have
not been made to remedy the conditions described below, the Company shall:

       (i)    if a Debt Limit Excession has occurred and is continuing, within
              120 days, unless otherwise provided below, and prior to any
              payment (other than any scheduled payment) of any other Borrowing
              Base Debt make a mandatory prepayment on the Loans in an amount
              equal to the amount necessary to eliminate any such Debt Limit
              Excession together with all interest accrued on the amount of
              such prepayment to the date thereof;

       (ii)   in the event that the issuance, assumption or creation of
              Borrowing Base Debt on any day which would cause a Debt Limit
              Excession effective as of 5:00 p.m. (Central Time) on such day,
              immediately, and in any event before 5:00 p.m. (Central Time), on
              such day make a mandatory prepayment on the Loans in an amount
              equal to the lesser of (x) the amount which would be necessary to
              eliminate such a Debt Limit Excession or (y) the aggregate
              principal amount of such Borrowing Base Debt issued, assumed or
              created on such day; and

       (iii)  upon the consummation of any Sale of any Property or any
              Borrowing Base Subsidiary of the Parent constituting (and
              designated by the Parent in a notice to the Global Administrative
              Agent as constituting) a permitted Sale under clause (iii) or
              (iv) of Section 11.3 of the U.S. Credit Agreement which results
              in a Debt Limit Excession, promptly, and in any event within
              three (3) Business Days thereof, make a mandatory prepayment on
              the Loans in the amount necessary to eliminate such Debt Limit
              Excession.

Notwithstanding that the Company shall have the period in which to make any
mandatory prepayment specified in this Section 4.1(a), (i) the Company shall
not be entitled to borrow Loans during such period except as provided under
Section 2.1(b) and (ii) the Company shall make all other prepayments and
payments required under or in connection with this Agreement; provided, that
for purposes of the foregoing provisions of this sentence the continuation of
any Eurodollar Loan as a Eurodollar Loan with an Interest period of one month
or any such shorter period permitted pursuant to the following proviso during
such period shall be deemed not to be the borrowing of a Loan; provided,
further, that, upon the request of the Company for the continuation of a
Eurodollar Loan as a Eurodollar Loan with an Interest Period of less than one
month, the Australian Administrative Agent, after obtaining the consent of the
Australian lenders, will use reasonable efforts to continue such a Eurodollar
Loan as a Eurodollar Loan of the requested duration.

       (b)    Application of Mandatory Prepayments.  Each mandatory prepayment
made under this Section 4.1 shall be applied (i) first, ratably among the
Australian Lenders with respect to any principal and interest due in connection
with Loans and (ii) second, after all amounts described in clause (i) have been
satisfied, ratably to any other Obligations then due.

       4.2.   Voluntary Prepayments.  The Company may from time to time, at its
option, prepay outstanding Advances, upon three (3) Business Days' prior notice
to the Australian Administrative Agent; provided that each such prepayment
shall be in a minimum aggregate amount of $5,000,000 or any integral multiple
of $1,000,000 in excess thereof without penalty or premium, except that if such
prepayment of a Eurodollar Loan occurs prior to a last day of any applicable
Interest Period, the Company shall also pay the amount specified in Section 6.3
at the time of such prepayment.  Such prepayments shall be applied, at the
Company's option, against outstanding Loans and against installments or amounts
due on account thereof in such order of application as the Company shall
direct; provided, that if the Company fails to direct an order of application
at or prior to the time of such notice of prepayment, then such





                                       20
<PAGE>   27
prepayments shall be applied (i) first, ratably among the Australian Lenders
with respect to any principal and interest due in connection with Loans and
(ii) second, after all amounts described in clause (i) have been satisfied,
ratably to any other Obligations then due; provided, further, that if, at the
time of any such prepayment, any Default shall have occurred and shall be
continuing, then the holders of the Obligations shall share such prepayment on
a pro rata basis, based on the respective amount of Obligations owing to each
such holder (whether or not matured and currently payable and whether
consisting of principal, accrued interest, fees, expenses, indemnities or other
types of Obligations) as of the date of occurrence of such Default.

       4.3.   Method of Payment.  All payments of principal, interest, and fees
hereunder shall be made by 1:00 p.m. (New York time) on the date when due in
immediately available funds to the Australian Administrative Agent to the
account or bank in Sydney or outside of Australia the Australian Administrative
Agent may nominate in writing from time to time for that purpose and shall be
applied (i) first, ratably among the Australian Lenders with respect to any
principal and interest due in connection with Loans and (ii) second, after all
amounts described in clause (i) have been satisfied, ratably to any other
Obligations then due; provided, however, that, if, at the time of any such
payment, any Default shall have occurred and shall be continuing, then the
holders of the Obligations shall share such payment on a pro rata basis, based
on the respective amount of Obligations owing to each such holder (whether or
not matured and currently payable and whether consisting of principal, accrued
interest, fees, expenses, indemnities or other types of Obligations) as of the
date of occurrence of such Default.  As between the Company and any Australian
Lender, the timely receipt of any payment by the Australian Administrative
Agent from the Company for the account of such Australian Lender shall
constitute receipt by such Australian Lender.  Each payment delivered to the
Australian Administrative Agent for the account of any Australian Lender shall
be paid promptly by the Australian Administrative Agent to such Australian
Lender in the same type of funds which the Australian Administrative Agent
received to the bank or account specified in a notice received by the
Australian Administrative Agent from such Australian Lender.  Each of the
Company and the Australian Administrative Agent shall be deemed to have
complied with this Section 4.3 with respect to any payment if it shall have
initiated a wire transfer to the appropriate recipient thereof and (on or prior
to the date of such transfer) furnished such recipient with written advice
(including reasonable detail) of such transfer.

       4.4.   Notes.  Each Australian Lender is hereby authorized to record the
principal amount of each of its Loans and each repayment thereof, on the
schedule attached to each of its Notes, provided, however, that the failure to
so record shall not affect the Company's obligations under any such Note.

       4.5.   Voluntary Reductions of Commitments.  The Company may permanently
reduce the Aggregate Commitment in whole, or in part, ratably among the
Australian Lenders, in a minimum aggregate amount of $5,000,000 or any integral
multiple of $1,000,000 in excess thereof; provided, however, that the amount of
the Aggregate Commitment may not be reduced to an amount which would cause it
to be less than the outstanding principal amount of the Loans.  All accrued
facility fees shall be payable on the effective date of any such reduction or
termination of the Aggregate Commitment.

       4.6.   Voluntary and Mandatory Prepayments.  Any prepayments of
principal of the Loans, whether voluntary or mandatory, shall include accrued
interest to, but not including, the date of the prepayment on the principal
amount being prepaid.

                                   ARTICLE V

                            [Intentionally Omitted].





                                       21
<PAGE>   28
                                   ARTICLE VI

                         CHANGE IN CIRCUMSTANCES; TAXES

       6.1.   Yield Protection.  If any law or any governmental or quasi-
governmental rule, regulation, policy, guideline or directive (whether or not
having the force of law), or any reasonable interpretation thereof, or
compliance of any Australian Lender with such,

              (a)    imposes or increases or deems applicable any reserve,
       assessment, insurance charge, special deposit or similar requirement
       against assets of, deposits with or for the account of, or credit
       extended by, any Australian Lender or any applicable Lending
       Installation (other than reserves and assessments taken into account in
       determining the interest rate applicable to Eurodollar Advances), or

              (b)    imposes any other condition the result of which is to
       increase the cost to any Australian Lender or any applicable Lending
       Installation of making, funding or maintaining Loans or reduces any
       amount receivable by any Australian Lender or any applicable Lending
       Installation in connection with Loans, or requires any Australian Lender
       or any applicable Lending Installation to make any payment calculated by
       reference to the amount of Loans held or interest received, by an amount
       reasonably deemed material by such Australian Lender,

then, within 15 days of demand by such Australian Lender, the Company shall pay
such Australian Lender that portion of such increased expense incurred or
reduction in an amount received which such Australian Lender reasonably
determines is attributable to making, funding and maintaining its Loans and its
Commitment.

       6.2.   Availability of Eurodollar Loans.  If any Australian Lender
determines that maintenance of its Eurodollar Loans at a suitable Lending
Installation would violate any applicable law, rule, regulation or directive,
whether or not having the force of law, (i) the Australian Administrative Agent
shall suspend the availability of the Eurodollar Rate with respect to such
Australian Lender until such time as such situation is no longer the case, (ii)
any Eurodollar Loans from such Australian Lender then outstanding shall bear
interest at such Australian Lender's cost of funds plus the Eurodollar Spread
for the remainder of the Interest Period applicable to such Loan and (iii)
until such time as such situation is no longer the case, any Eurodollar Advance
made thereafter shall consist of a Loan which bears interest at such Australian
Lender's cost of funds plus the Eurodollar Spread made by such Australian
Lender(s) and Eurodollar Loans made by each other Australian Lender.  If the
Required Lenders reasonably determine that deposits of a type or maturity
appropriate to match fund Eurodollar Advances are not available, the Australian
Administrative Agent shall suspend the availability of the Eurodollar Rate with
respect to any Eurodollar Advances made after the date of any such
determination until such time as such situation is no longer the case.  If the
Required Lenders determine that the Eurodollar Rate does not accurately reflect
the cost of making a Eurodollar Advance at such Eurodollar Rate, then, if for
any reason whatsoever the provisions of Section 6.1 are inapplicable, the
Australian Administrative Agent shall suspend the availability of the
Eurodollar Rate with respect to any Eurodollar Advances made on or after the
date of any such determination until such time as such situation is no longer
the case and shall require any outstanding Eurodollar Advances to be repaid.

       6.3.   Funding Indemnification.  If any payment of a Eurodollar Advance
occurs on a date which is not the last day of the applicable Interest Period,
whether because of acceleration, prepayment or otherwise (except pursuant to
Section 6.2), or a Eurodollar Advance is not made on the date specified by the
Company for any reason other than default by the Australian Lenders, the
Company, jointly and severally, will indemnify each Australian Lender for any
loss or cost incurred by it resulting therefrom, including, without limitation,
any loss or cost in liquidating or employing deposits acquired to fund or
maintain the Eurodollar Advance (net of any cost or expense, unless Section
6.1, 6.5 or 6.6 is applicable thereto, which the Australian Lender would have
incurred with respect to such Eurodollar Advance had such prepayment or failure
to fund not occurred).





                                       22
<PAGE>   29
       6.4.   Lending Installations.  Each Australian Lender may book its Loans
at any Lending Installation selected by such Australian Lender and may change
its Lending Installation from time to time.  All terms of this Agreement shall
apply to any such Lending Installation and the Notes shall be deemed held by
each Australian Lender for the benefit of such Lending Installation.  Each
Australian Lender may, by written or telex or facsimile notice to the
Australian Administrative Agent and the Company, designate a Lending
Installation through which Loans will be made by it and for whose account Loan
payments are to be made.  To the extent reasonably possible, each Australian
Lender shall designate an alternate Lending Installation with respect to its
Eurodollar Loans to reduce any liability of the Company to such Australian
Lender under Sections 6.1, 6.5 and 6.6, so long as such designation is not
disadvantageous to such Australian Lender in the sole opinion of such
Australian Lender.

       6.5.   Increased Capital Costs.  If any change in, or the introduction,
adoption, effectiveness, interpretation, reinterpretation or phase-in of, any
law or regulation, directive, guideline, decision or request (whether or not
having the force of law) of any court, central bank, regulator or other
governmental authority affects or would affect the amount of capital required
or expected to be maintained by any Australian Lender or any Person controlling
such Australian Lender, and such Australian Lender determines (in its sole and
absolute discretion) that the rate of return on its or such controlling
Person's capital as a consequence of its Commitments or the Loans made by such
Australian Lender is reduced to a level below that which such Australian
Lender, or such controlling Person, as the case may be, could have achieved but
for the occurrence of any such circumstance (taking into account such Person's
policies as to capital adequacy), then, in any such case upon notice from time
to time by such Australian Lender to the Company, the Company shall immediately
pay directly to such Australian Lender additional amounts sufficient to
compensate such Australian Lender or such controlling Person for such reduction
in rate of return.  A statement of such Australian Lender as to any such
additional amount or amounts (including calculations thereof in reasonable
detail) shall, in the absence of manifest error, be conclusive and binding on
the Company.  In determining such amount, such Australian Lender may use any
method of averaging and attribution that it (in its sole and absolute
discretion) shall deem applicable.

       6.6.   Taxes.  All payments by the Company or any Guarantor of principal
of, and interest on, the Loans and all other amounts payable hereunder and in
connection herewith shall be made free and clear of and without deduction for
any present or future income, excise, stamp or franchise taxes and other taxes,
fees, duties, withholdings or other charges of any nature whatsoever imposed by
any taxing authority, but excluding franchise taxes and taxes imposed on or
measured by any Agent's or any Australian Lender's, as applicable, net income
or receipts and any participation pursuant to Section 17.2 not occurring during
the continuation of a Default (such non-excluded items being called "Taxes").
In the event that any withholding or deduction from any payment to be made by
the Company or any Guarantor hereunder or under any Australian Loan Document is
required in respect of any Taxes pursuant to any applicable law, rule or
regulation, then the Company will

              (a)    pay directly to the relevant authority the full amount
       required to be so withheld or deducted;

              (b)    promptly forward to the Australian Administrative Agent an
       official receipt or other documentation satisfactory to the Australian
       Administrative Agent or the relevant Agent or Australian Lender
       evidencing such payment to such authority; and

              (c)    pay to the Australian Administrative Agent for the account
       of the Agents and the Australian Lenders such additional amount or
       amounts as is necessary to ensure that the net amount actually received
       by each Agent and Australian Lender will equal the full amount such
       Agent or Australian Lender would have received had no such withholding
       or deduction been required.

Moreover, if any Taxes are directly asserted against any Agent or any
Australian Lender, with respect to any payment received by it hereunder or in
connection herewith, the relevant Agent or Australian Lender may pay such Taxes
and the Company will promptly pay such additional amounts (including any
penalties, interest or expenses) as is necessary in order that the net amount
received by such Person after the payment of such Taxes (including any Taxes on
such additional amount) shall equal the amount such Person would have received
had such Taxes not been asserted.





                                       23
<PAGE>   30
       If the Company fails to pay any Taxes when due to the appropriate taxing
authority or fails to remit to the Australian Administrative Agent, for the
account of the respective Agents and Australian Lenders, the required receipts
or other required documentary evidence, the Company, jointly and severally,
shall indemnify the Agents and the Australian Lenders for any incremental
Taxes, interest or penalties that may become payable by any Agent or Australian
Lender as a result of any such failure.  For purposes of this Section 6.6, a
distribution hereunder by the Australian Administrative Agent or any other
Agent or any Australian Lender to or for the account of any Agent or Australian
Lender shall be deemed a payment by the Company.

       6.7.   Australian Lender Statements; Survival of Indemnity; Substitution
of Australian Lenders; Limitation on Claims by Australian Lenders.  Each Agent
and Australian Lender shall deliver to the Company and the Australian
Administrative Agent a written statement of such Agent or Australian Lender, as
the case may be, as to the amount due, if any, under Sections 6.1, 6.3, 6.5 or
6.6.  Such written statement shall set forth in reasonable detail the
calculations upon which such Agent or Australian Lender, as the case may be,
determined such amount and shall be final, conclusive and binding on the
Company in the absence of manifest error.  Determination of amounts payable
under such Sections in connection with a Eurodollar Loan shall be calculated as
though each Australian Lender funded its Eurodollar Loan through the purchase
of a deposit of the type and maturity corresponding to the deposit used as a
reference in determining the Eurodollar Rate applicable to such Loan, whether
in fact that is the case or not.  Unless otherwise provided herein, the amount
specified in the written statement shall be payable on demand after receipt by
the Company of the written statement.  The obligations of the Company under
Sections 6.1, 6.3, 6.5 and 6.6 shall survive payment of the Obligations and
termination of this Agreement.  In the event that any Australian Lender shall
deliver to the Company and the Australian Administrative Agent a written
statement as to an amount due under Section 6.1, 6.3, 6.5 or 6.6, the Company
may, at its sole expense and effort, require such Australian Lender to transfer
(in accordance with Section 17.3), without recourse, all of its interests,
rights and obligations under this Agreement to a transferee which shall assume
such transferred obligations (which transferee may be another Australian
Lender, if an Australian Lender accepts such transfer); provided that (i) such
transfer shall not conflict with any law, rule or regulation or order of any
court or other governmental authority, (ii) the Company shall have received a
written consent of the Australian Administrative Agent and the Arrangers in the
case of an entity that is not an Australian Lender, which consent shall not be
unreasonably withheld, (iii) the Company or such transferee shall have paid to
the transferring Australian Lender in immediately available funds the principal
of and interest accrued to the date of such payment on the Loans made by it
hereunder and all other amounts owed to it hereunder and the fee payable to the
Australian Administrative Agent pursuant to Section 17.3(b) and (iv) that
nothing in the foregoing is intended or shall be construed as obligating any
Australian Lender to locate such an a transferee.  The Company shall not be
required to pay to any Australian Lender any amount under Section 6.1, 6.3,
6.5, or 6.6 in respect of any time or period more than twelve months prior to
the time such Australian Lender notifies or bills the Company of or for such
amount.

       6.8.   [Intentionally Omitted].

       6.9.   Currency Conversion and Currency Indemnity.

       (a)    Payments in Agreed Currency.  The Company or any Guarantor shall
make payment relative to any Obligation in the currency (the "Agreed Currency")
in which the Obligation was effected.  If any payment is received on account of
any Obligation in any currency (the "Other Currency") other than the Agreed
Currency (whether voluntarily or pursuant to an order or judgment or the
enforcement thereof or the realization of any security or the liquidation of
the Company or any Guarantor or otherwise howsoever), such payment shall
constitute a discharge of the liability of the Company or such Guarantor
hereunder and under the other Australian Loan Documents in respect of such
obligation only to the extent of the amount of the Agreed Currency which the
relevant Australian Lender or Agent, as the case may be, is able to purchase
with the amount of the Other Currency received by it on the Business Day next
following such receipt in accordance with its normal procedures and after
deducting any premium and costs of exchange.

       (b)    Conversion of Agreed Currency into Judgment Currency.  If, for
the purpose of obtaining or enforcing judgment in any court in any
jurisdiction, it becomes necessary to convert into a particular currency (the
"Judgment Currency") any amount due in the Agreed Currency then the conversion
shall be made on the basis of the rate





                                       24
<PAGE>   31
of exchange prevailing on the Business Day next preceding the day on which
judgment is given and in any event the Company or a Guarantor shall be
obligated to pay the Agents and the Australian Lenders any deficiency in
accordance with Section 6.9(a).  For the foregoing purposes "rate of exchange"
means the rate at which the relevant Australian Lender or Agent, as applicable,
in accordance with its normal banking procedures is able on the relevant date
to purchase the Agreed Currency with the Judgment Currency after deducting any
premium and costs of exchange.

       (c)    Circumstances Giving Rise to Indemnity.  If (i) any Australian
Lender or the Agent receives any payment or payments on account of the
liability of the Company or any Guarantor hereunder pursuant to any judgment or
order in any Other Currency, and (ii) the amount of the Agreed Currency which
the relevant Australian Lender or Agent, as applicable, is able to purchase on
the Business Day next following such receipt with the proceeds of such payment
or payments in accordance with its normal procedures and after deducting any
premiums and costs of exchange is less than the amount of the Agreed Currency
due in respect of such obligations immediately prior to such judgment or order,
then the Company or the Guarantor on demand shall, and the Company, jointly and
severally, or the Guarantor hereby agree to, indemnify and save the Australian
Lenders and the Agents harmless from and against any loss, cost or expense
arising out of or in connection with such deficiency.

       (d)    Indemnity Separate Obligation.  The agreement of indemnity
provided for in Section 6.9(c) shall constitute an obligation separate and
independent from all other obligations contained in this Agreement, shall give
rise to a separate and independent cause of action, shall apply irrespective of
any indulgence granted by the Australian Lenders or Agents or any of them from
time to time, and shall continue in full force and effect notwithstanding any
judgment or order for a liquidated sum in respect of an amount due hereunder or
under any judgment or order.


                                  ARTICLE VII

                              CONDITIONS PRECEDENT

       7.1.   Conditions of Effectiveness.  The effectiveness of this Agreement
and the obligation of each Australian Lender to make Loans hereunder, are
subject to the conditions precedent that the following documents have been
furnished to the Global Administrative Agent and the Australian Administrative
Agent, each in form and substance satisfactory to each of the Global
Administrative Agent, the Australian Administrative Agent and the Arrangers,
and each (except for the Notes, of which only one original of each type shall
be signed for each Australian Lender) in sufficient number of duly executed
signed counterparts (or photocopies thereof) to provide one for the Global
Administrative Agent, the Australian Administrative Agent, the Arrangers and
each Australian Lender:

              (i)    Copies of the Certificate of Incorporation, the Memorandum
       and Articles of Incorporation of Apache Energy Limited and Apache Oil
       Australia.

              (ii)   Copies, certified by the Secretary or Assistant Secretary
       of Apache Energy Limited and Apache Oil Australia of its Board of
       Directors' resolutions (and resolutions of other bodies, if any are
       deemed necessary by counsel for the Global Administrative Agent and the
       Australian Administrative Agent) authorizing the execution, delivery and
       performance of the Australian Loan Documents.

              (iii)  Incumbency certificates, executed by the Secretary or
       Assistant Secretary of Apache Energy Limited and Apache Oil Australia,
       which shall identify by name and title and bear the signature of the
       officers of each of Apache Energy Limited and Apache Oil Australia
       authorized to sign the Australian Loan Documents and to make borrowings
       hereunder, upon which certificate the Agents and the Australian Lenders
       shall be entitled to rely until informed of any change in writing by
       Apache Energy Limited and Apache Oil Australia.

              (iv)   Written opinions of the Company's counsel acceptable to
       each of the Agents and the Arrangers, addressed to the Agents and the
       Australian Lenders, in substantially the form of Exhibit B hereto,





                                       25
<PAGE>   32
       with such modifications, additions, alterations, exceptions, assumptions
       and provisions as shall be acceptable to each of the Agents and the
       Arrangers.

              (v)    The Notes payable to the order of each of the Australian
       Lenders.

              (vi)   An executed Guaranty from each Borrowing Base Subsidiary.

              (vii)  A certificate of an Authorized Officer of Apache Energy
       Limited and Apache Oil Australia, satisfactory to each of the Agents and
       the Arrangers, regarding insurance maintained by Apache Energy Limited
       and Apache Oil Australia, respectively.

              (viii) The comfort letter, in form and substance acceptable to
       the Australia Administrative Agent and the Global Administrative Agent,
       in their sole discretion.

              (ix)   The opinion of Allen Allen & Hemsley, special Australian
       counsel to the Australian Administrative Agent, addressed to the Agents
       and the Australian Lenders, substantially in the form of Exhibit F
       hereto.

              (x)    The Global Effectiveness Notice.

              (xi)   A certificate, signed by an Authorized Officer of the
       Company, stating that on the Global Effective Date no Default or
       Unmatured Default has occurred and is continuing.

              (xii)  Copies of the executed Canadian Credit Agreement and the
       other Canadian Loan Documents, the executed U.S. Credit Agreement and
       the other U.S. Loan Documents, the executed Intercreditor Agreement and
       the executed Indemnity Agreements.

              (xiii) Such other instruments and documents as any of the
       Arrangers or the Agents or their counsel may have reasonably requested.

       The effectiveness of this Agreement and the obligation of each
Australian Lender to make Loans hereunder, are further conditioned upon the
Agents having received the fees to be received as set forth in Section 2.4(b)
on or prior to the Global Effective Date.

       7.2.   Each Advance.  The Australian Lenders shall not be required to
make any Advance unless on the applicable Borrowing Date:

              (a)    There exists no Default or Unmatured Default.

              (b)    There exists no Debt Limit Excession and the Company
       represents and warrants to the Australian Administrative Agent and
       Global Administrative Agent that, immediately before and after such
       Advance, there exists no Debt Limit Excession other than a Debt Limit
       Excession permitted pursuant to the first proviso to Section 2.1(b).

              (c)    The representations and warranties contained in Article
       VIII, including in Sections 8.3 and 8.7, or contained in any other
       Australian Loan Document are true and correct as of such Borrowing Date
       except for changes in the Schedules hereto reflecting transactions
       permitted by this Agreement.

              (d)    All legal requirements arising under or in connection with
       the Australian Loan Documents or applicable laws, rules or regulations
       and incident to the making of such Advance shall be satisfactory to the
       Agents and the Arrangers and their respective counsel.





                                       26
<PAGE>   33
              (e)    No event, occurrence, action, inaction or other item shall
       have occurred which results in a Material Adverse Effect.

       Each Borrowing Notice and Continuation Notice with respect to each
Advance shall constitute a representation and warranty by the Company that the
conditions contained in Sections 7.2(a), (b), (c) and (d) have been satisfied
and, that after giving effect to such Advance and the transfer or application
of the proceeds thereof, the sum of the aggregate outstanding principal amount
of all Borrowing Base Debt will not exceed the Global Borrowing Base except as
permitted in Section 2.1(b).


                                  ARTICLE VIII

                         REPRESENTATIONS AND WARRANTIES

       The Company represents and warrants to the Australian Lenders and the
Agents that:

       8.1.   Corporate Existence and Standing.  Each of Apache Energy Limited
and Apache Oil Australia is a corporation, and each of their Subsidiaries is a
corporation or other legal entity, in either case duly incorporated or
otherwise properly organized, validly existing and in good standing under the
laws of its jurisdiction of incorporation or organization and has all requisite
authority, permits and approvals, and is in good standing to conduct its
business in each jurisdiction in which its business is conducted.

       8.2.   Authorization and Validity.  Each of Apache Energy Limited and
Apache Oil Australia and each of their Subsidiaries has the corporate or
partnership power and authority and legal right to execute and deliver the
Australian Loan Documents and to perform its respective obligations thereunder.
The execution and delivery by each of Apache Energy Limited and Apache Oil
Australia and each of their Subsidiaries of the Australian Loan Documents to
which it is a party and the performance of Apache Energy Limited's, Apache Oil
Australia's and such Subsidiary's obligations thereunder have been duly
authorized by proper corporate or partnership proceedings, and the Australian
Loan Documents have been duly executed and delivered and constitute legal,
valid and binding obligations of each of Apache Energy Limited and Apache Oil
Australia and each of their Subsidiaries party thereto, in each case
enforceable against each of Apache Energy Limited and Apache Oil Australia and
such Subsidiaries in accordance with their terms, except as enforceability may
be limited by bankruptcy, insolvency or similar laws affecting the enforcement
of creditors' rights generally.

       8.3.   No Conflict; Government Consent.  Neither the execution and
delivery by the Company and each Subsidiary of the Australian Loan Documents
nor the consummation of the transactions therein contemplated, nor compliance
with the provisions thereof will violate any law, rule, regulation, order,
writ, judgment, injunction, decree or award binding on each of Apache Energy
Limited and Apache Oil Australia or any of their Subsidiaries or Apache Energy
Limited's, Apache Oil Australia's or any Subsidiary's certificate of
incorporation or memorandum and articles of incorporation or partnership
agreement or the provisions of any indenture, instrument or agreement to which
Apache Energy Limited and Apache Oil Australia or any Subsidiary is a party or
is subject, or by which it, or its property, is bound, or conflict with or
constitute a default thereunder, or result in the creation or imposition of any
Lien in, of or on all or any part of the property of Apache Energy Limited and
Apache Oil Australia or any Subsidiary.  No order, consent, approval, license,
authorization, or validation of, or filing, recording or registration with, or
exemption by, any governmental or public body or authority, or any subdivision
thereof, is required to authorize, or is required in connection with the
execution, delivery and performance of, or the legality, validity, binding
effect or enforceability of, any of the Australian Loan Documents.

       8.4.   Financial Statements.  The consolidated (i) financial statements
of the Parent dated December 31, 1995 and (ii) report and accompanying
financial statements of the Company and its Subsidiaries dated December 31,
1995, heretofore delivered to the Australian Lenders were prepared in
accordance with generally accepted accounting principles in effect on the date
such statements were prepared and fairly present the consolidated financial
condition of the Parent,





                                       27
<PAGE>   34
the Company and their respective Subsidiaries at such date and the consolidated
results of their operations for the period then ended.

       8.5.   Material Adverse Change.  Since December 31, 1995, there has been
no change in the business, assets, properties, operations, condition (financial
or otherwise) or results of operations or prospects of the Company and its
Subsidiaries or any legal or regulatory development which results in a Material
Adverse Effect.

       8.6.   Taxes.  The Company and the Subsidiaries have filed all federal
tax returns and all other tax returns which are required to be filed and have
paid all taxes due pursuant to said returns or pursuant to any assessment
received by the Company or any Subsidiary, except such taxes, if any, as are
being contested in good faith and as to which adequate reserves have been
provided.  The income tax returns of the Company and the Subsidiaries have been
audited by either the Australian Commissioner of Taxation or the Internal
Revenue Service or, if no audit was performed, the statute of limitations
permitting such an audit has run, through the fiscal year ended December 31,
1991.  No tax liens have been filed and no claims are being asserted with
respect to any such taxes.  The charges, accruals and reserves on the books of
the Company and the Subsidiaries in respect of any taxes or other governmental
charges are adequate.

       8.7.   Litigation and Guaranteed Obligations.  There is no litigation,
arbitration, governmental investigation, proceeding or inquiry pending or, to
the knowledge of any of their officers, threatened against or affecting the
Company or any Subsidiary which results in a Material Adverse Effect.  The
Company and its Subsidiaries have no material contingent obligations not
provided for or disclosed in the financial statements referred to in Section
8.4.

       8.8.   Subsidiaries.  Schedule 8.8 hereto contains an accurate list of
all of the presently existing Subsidiaries, including, without limitation,
Borrowing Base Subsidiaries, of the Company as of the date of this Agreement,
setting forth their respective jurisdictions of incorporation or organization
and the percentage of their respective capital stock, or the revenue share
attributable to the general and limited partnership interests, as the case may
be, owned by the Company or other Subsidiaries.  All of the issued and
outstanding shares of capital stock of such Subsidiaries which are corporations
have been duly authorized and issued and are fully paid and non-assessable.

       8.9.   Superannuation Scheme.  The Company administers a defined benefit
superannuation fund (as described in the Superannuation Industry (Supervision)
Act 1993 (the "SIS Act") and the Company and its Subsidiaries liabilities under
such fund do not in the aggregate exceed $5,000,000.

       8.10.  Accuracy of Information.  No information, exhibit or report
furnished by the Parent, the Company or any Subsidiary to any Agent or to any
Australian Lender in connection with the negotiation of, or compliance with,
the Australian Loan Documents contained any material misstatement of fact or
omitted to state a material fact or any fact necessary to make the statements
contained therein not misleading.

       8.11.  [Intentionally Omitted].

       8.12.  Material Agreements.  Neither the Company nor any Subsidiary is
in default in the performance, observance or fulfillment of any of the
obligations, covenants or conditions contained in (i) any agreement to which it
is a party, which default would result in a Material Adverse Effect or (ii) any
agreement or instrument evidencing or governing Indebtedness which default
would result in a Material Adverse Effect.

       8.13.  Compliance With Laws.  The Company and the Subsidiaries have
complied in all material respects with all applicable statutes, rules,
regulations, orders and restrictions of any domestic or foreign government or
any instrumentality or agency thereof, having jurisdiction over the conduct of
their respective businesses or the ownership of their respective Properties.
Neither the Company nor any of the Subsidiaries has received any notice to the
effect that it, its operations or the Properties are not in material compliance
with any of the requirements of applicable federal, state or local
environmental, health and safety statutes and regulations, or are the subject
of any federal or state investigation evaluating whether any remedial action is
needed to respond to a release of any toxic or hazardous waste or substance





                                       28
<PAGE>   35
into the environment, whether from the Properties or elsewhere, which in any
case would result in a Material Adverse Effect.

       8.14.  Title to Properties.  Each of the Company and the Subsidiaries
has defensible title to substantially all of its properties and assets, whether
legal or beneficial, free and clear of any and all Liens other than those Liens
permitted by Section 11.5.  The 1996 Engineers' Report refers to and covers all
of the reserves in the Properties as of the Global Effective Date and such
Report covers no reserves other than in such Properties.

       8.15.  Investment Company Act.  Neither the Company nor any Subsidiary
is an "investment company" or a company "controlled" by an "investment
company," within the meaning of the Investment Company Act of 1940, as amended.

       8.16.  Public Utility Holding Company Act.  Neither the Company nor any
Subsidiary is a "holding company" or a "subsidiary company" of a "holding
company," or an "affiliate" of a "holding company" or of a "subsidiary company"
of a "holding company," within the meaning of the Public Utility Holding
Company Act of 1935, as amended.

       8.17.  Post-Retirement Benefits.  The present value of the expected cost
of post-retirement medical and insurance benefits payable by the Company and
its Subsidiaries to its employees and former employees, as estimated by the
Company in accordance with procedures and assumptions deemed reasonable by the
Agents, does not exceed $3,000,000.

       8.18.  Solvency.  As of the Global Effective Date and upon each renewal
of this representation at any time thereafter, (i) the Company is Solvent, (ii)
the Company and its Consolidated Subsidiaries of the Company on a consolidated
basis are Solvent, and (iii) each Guarantor and its Consolidated Subsidiaries
on a consolidated basis are Solvent, provided, however, that this clause (iii)
shall not apply to any Guarantor which is a Subsidiary if the Company notifies
the Global Administrative Agent and the Australian Administrative Agent in
writing that it cannot in good faith certify to the Global Administrative
Agent, the Australian Administrative Agent and the Australian Lenders that such
Guarantor is Solvent.

       8.19.  Environmental Warranties.  In the ordinary course of its
business, the Company conducts an ongoing review of the effect of Environmental
Laws on the business, operations and Properties of the Company and its
Subsidiaries, in the course of which it identifies and evaluates associated
liabilities and costs (including any capital or operating expenditures required
for clean-up or closure of Properties presently owned or operated, any capital
or operating expenditures required to achieve or maintain compliance with
environmental protection standards imposed by law or as a condition of any
license, permit or contract, any related constraints on operating activities,
including any periodic or permanent shutdown of any facility or reduction in
the level of or change in the nature of operations conducted thereat and any
actual or potential liabilities to third parties, including employees, and any
related costs and expenses).  On the basis of this review, the Company has
reasonably concluded that, except as disclosed in writing by the Company to the
Australian Lenders and the Agents, to the best of its knowledge after due
inquiry:

              (a)    all facilities and property (including underlying
       groundwater) owned, leased or operated by the Company or any Subsidiary
       have been, and continue to be, owned, leased or operated by the Company
       or any Subsidiary in material compliance with all Environmental Laws;

              (b)    there have been no past, and there are no pending or
       threatened

                     (i)    claims, complaints, notices or inquiries to, or
              requests for information received by, the Company or any
              Subsidiary with respect to any alleged violation of any
              Environmental Law that, singly or in the aggregate, result in a
              Material Adverse Effect, or





                                       29
<PAGE>   36
                     (ii)   claims, complaints, notices or inquiries to, or
              requests for information received by, the Company or any
              Subsidiary regarding potential liability under any Environmental
              Law or under any common law theories relating to operations or
              the condition of any facilities or property (including underlying
              groundwater) owned, leased or operated by the Company or any
              Subsidiary that, singly or in the aggregate, result in a Material
              Adverse Effect;

              (c)    there have been no Releases of Hazardous Materials at, on
       or under any property now or previously owned or leased by the Company
       or any Subsidiary that, singly or in the aggregate, result in a Material
       Adverse Effect;

              (d)    the Company and each Subsidiary have been issued and are
       in compliance with all permits, certificates, approvals, licenses and
       other authorizations relating to environmental matters and necessary or
       desirable for their businesses except where failure to comply would not
       have a Material Adverse Effect;

              (e)    no property now or previously owned, leased or operated by
       the Company or any Subsidiary is listed or proposed for listing on any
       federal, or state list of sites requiring investigation or clean-up;

              (f)    there are no underground storage tanks, active or
       abandoned, including petroleum storage tanks, on or under any property
       now or previously owned, leased or operated by the Company or any
       Subsidiary that, singly or in the aggregate, result in a Material
       Adverse Effect;

              (g)    none of the Company or any Subsidiary has directly
       transported or directly arranged for the transportation of any Hazardous
       Material to any location which is listed or proposed for listing on any
       federal, or state list or which is the subject of federal, state or
       local enforcement actions or other investigations which may lead to
       material claims against the Company or such Subsidiary for any remedial
       work, damage to natural resources or personal injury which, singly or in
       the aggregate, results in a Material Adverse Effect;

              (h)    there are no polychlorinated biphenyls, radioactive
       materials or friable asbestos present at any property now or previously
       owned or leased by the Company or any Subsidiary that, singly or in the
       aggregate, results in a Material Adverse Effect; and

              (i)    no condition exists at, on or under any property now or
       previously owned or leased by the Company or any Subsidiary which, with
       the passage of time, or the giving of notice or both, would give rise to
       material liability under any Environmental Law that, singly or in the
       aggregate results in a Material Adverse Effect.


                                   ARTICLE IX

                             AFFIRMATIVE COVENANTS

       During the term of this Agreement but subject to Section 9.14, unless
the Required Lenders shall otherwise consent in writing:

       9.1.   Financial Reporting.  The Company will maintain a system of
accounting established and administered in accordance with generally accepted
accounting principles, and furnish, or assist the Parent in furnishing, to the
Global Administrative Agent, the Australian Administrative Agent and the
Australian Lenders:

              (a)    As soon as available and in any event within 90 days after
       the close of each of its fiscal years, a copy of the report for such
       year and accompanying financial statements, including balance sheets as
       of the end of such period, related profit and loss and reconciliation of
       surplus statements, and a statement of cash flows for the Company and
       its Consolidated Subsidiaries, all prepared in accordance with generally
       accepted





                                       30
<PAGE>   37
       accounting principles and signed by an Authorized Officer of the
       Company, such signature deemed to be a certification that (i) such
       financial statements present fairly in accordance with generally
       accepted accounting principles the financial position of the Company and
       its Consolidated Subsidiaries and (ii) no Default, Unmatured Default or
       Debt Limit Excession has occurred and is continuing.

              (b)    As soon as available and in any event within 45 days after
       the close of the first three quarterly periods of each of its fiscal
       years, for the Company and its Consolidated Subsidiaries, consolidated
       unaudited balance sheets as at the close of each such period and
       consolidated profit and loss and reconciliation of surplus statements
       and a statement of cash flows for the period from the beginning of such
       fiscal year to the end of such quarter, all prepared in accordance with
       generally accepted accounting principles and signed by an Authorized
       Officer of the Company, such signature deemed to be a certification that
       (i) such financial statements present fairly in accordance with
       generally accepted accounting principles, the financial position of the
       Company and its Consolidated Subsidiaries and (ii) that no Default,
       Unmatured Default or Debt Limited Excession has occurred and is
       continuing.

              (c)    Together with the financial statements required under
       clauses (a) and (b), a compliance certificate, in substantially the form
       of Exhibit C hereto, signed by an Authorized Officer of the Parent and
       an Authorized Officer of Apache Energy Limited and Apache Oil Australia
       and addressing the matters set forth therein.

              (d)    Promptly after December 31 of each calendar year,
       commencing December 31, 1996, and in any event not later than March 15
       of the next succeeding calendar year, an Approved Engineers' Report
       prepared as of December 31 of such calendar year, in form and substance
       satisfactory to the Engineering Banks.

              (e)    Promptly after June 30 of each calendar year and in any
       event not later than September 15 of such calendar year, a Parent's
       Engineers' Report prepared as of June 30 of such calendar year, in form
       and substance satisfactory to the Engineering Banks.

              (f)    Within 45 days in the case of a Parent's Engineers' Report
       and 60 days in the case of an Approved Engineers' Report, of any request
       by the Required Lenders in connection with any (other than the scheduled
       semi-annual redeterminations of the Global Borrowing Base) determination
       of the Global Borrowing Base pursuant to Section 2.3(a) of the U.S.
       Credit Agreement, an Approved Engineers' Report or a Parent's Engineers'
       Report, as the case may be, prepared as of the date of such request, in
       form and substance satisfactory to the Required Lenders.

              (g)    Promptly upon the furnishing thereof to the shareholders
       of the Parent or the Company copies of all financial statements, reports
       and proxy statements so furnished.

              (h)    Promptly upon the filing thereof, copies of all publicly
       available registration statements and annual, quarterly, monthly or
       other regular reports which the Parent or the Company or any of their
       Subsidiaries file with the Securities and Exchange Commission or any
       federal securities regulatory body in Australia.

              (i)    Promptly after December 31 of each calendar year,
       commencing December 31, 1996, and in any event no later than March 15 of
       the next succeeding calendar year, a budget (including specific capital
       expenditures information) through the Termination Date for the Parent
       and its Subsidiaries certified by an Authorized Officer of the Parent
       and in a format consistent with the Projections and otherwise in form
       and substance satisfactory to the Global Administrative Agent, the
       Australian Administrative Agent and the Arrangers.

              (j)    At the request of the Global Administrative Agent, the
       Australian Administrative Agent, either Arranger, or the Required
       Lenders promptly after June 30 of each calendar year, commencing June
       30, 1997, and in any event no later than September 15 of such calendar
       year, an update of the budget described in





                                       31
<PAGE>   38
       clause (i) of this Section 9.1 in form and substance satisfactory to the
       Global Administrative Agent and signed by an Authorized Officer of the
       Parent.

              (k)    Promptly and in any event within 40 days after the close
       of each calendar quarter during each year, a certificate of an
       Authorized Officer of the Parent certifying to the Global Administrative
       Agent, the Australian Administrative Agent and the Australian Lenders
       the Debt/Capitalization Ratio and the calculation thereof as of the last
       day of the immediately preceding calendar quarter.

              (l)    After receipt by the Global Administrative Agent and the
       Australian Administrative Agent of a notice from the Company specified
       in Section 8.18(iii), promptly and in any event within 30 days after the
       close of each calendar quarter, a certificate of an Authorized Officer
       of Apache Energy Limited and Apache Oil Australia certifying to the
       Global Administrative Agent, the Australian Administrative Agent and the
       Australian Lenders whether the Company can certify in good faith that
       any Subsidiary specified in any such notice is Solvent as of the date of
       such certificate.

              (m)    Such other information (including engineering, financial
       and non-financial information) as the Global Administrative Agent, the
       Australian Administrative Agent, either Arranger or any Australian
       Lender may from time to time reasonably request.

       9.2.   Use of Proceeds.  The Company will, and will cause each
Subsidiary to, use the proceeds of the Loans (i) to refinance existing
Indebtedness of the Company and the Subsidiaries (other than Indebtedness
incurred to finance, directly or indirectly, the purchase of shares of capital
stock of either Company or a Guarantor) or (ii) for the Company's and the
Subsidiaries' general corporate purposes.

       9.3.   Notice of Default, Unmatured Default, Litigation and Material
Adverse Effect.  The Company will give prompt notice in writing to the Global
Administrative Agent, the Australian Administrative Agent, the Australian
Lenders and to all Guarantors of (i) the occurrence of any Default or Unmatured
Default and the steps, if any, being taken to cure it, (ii) the occurrence of
any Debt Limit Excession and the steps, if any, being taken to cure it, (iii)
the occurrence of any adverse development with respect to any labor
controversy, litigation, action or proceeding described in Section 8.7, or the
commencement of any labor, controversy, litigation, action or proceeding of the
type described in Section 8.7 together with copies of all material pleadings
relating thereto, and (iv) the occurrence of any other development, financial
or otherwise, which results in a Material Adverse Effect or might materially
adversely affect the ability of the Company to repay the Obligations.

       9.4.   Conduct of Business.  The Company will, and will cause its
Subsidiaries to, carry on and conduct its respective business in substantially
the same manner and in substantially the same fields of enterprise as it is
presently conducted and, except to the extent permitted by Section 11.2 or
Section 11.3, will, and will cause each Subsidiary to, do all things necessary
to remain duly incorporated or organized, validly existing and in good standing
as a corporation or partnership, as the case may be, in its jurisdiction of
incorporation or organization and maintain all requisite authority to conduct
its business in each jurisdiction in which its business is conducted.

       9.5.   Taxes.  The Company will, and will cause each Subsidiary to, pay
when due all taxes, assessments and governmental charges and levies upon it or
its income, profits or property, and all lawful claims which, if unpaid, might
become a Lien upon any properties of the Company or any Subsidiary, except
those which are being contested in good faith by appropriate proceedings and
with respect to which adequate reserves in accordance with generally accepted
accounting principles have been set aside on its books.

       9.6.   Insurance.  The Company and its Subsidiaries will maintain, with
financially sound and reputable insurers, insurance with respect to their
respective properties and business against such liabilities, casualties, risks
and contingencies and in such types and amounts as customary in the case of
corporations engaged in the same or similar businesses and similarly situated.
Upon the request of the Global Administrative Agent or the Australian
Administrative Agent, the Company will furnish or cause to be furnished to the
Global Administrative Agent and the Australian





                                       32
<PAGE>   39
Administrative Agent from time to time a summary of the insurance coverage of
the Company and its Subsidiaries in form and substance satisfactory to the
Required Lenders in their reasonable judgment, and, if requested, will furnish
the Global Administrative Agent and the Australian Administrative Agent copies
of the applicable policies.  In the case of any fire, accident or other
casualty causing loss or damage to any property of the Company or any of its
Subsidiaries, the proceeds of such policies will be used (i) to repair or
replace the damaged property or (ii) to prepay the Obligations, at the election
of the Company.

       9.7.   Compliance with Laws.  The Company will, and will cause each
Subsidiary to, comply with all laws, rules, regulations, orders, writs,
judgments, injunctions, decrees or awards to which it may be subject.

       9.8.   Maintenance of Properties.  The Company will and will cause each
Subsidiary to, do all things necessary to maintain, preserve, protect and keep
its properties in good repair, working order and condition, and make all
necessary and proper repairs, renewals and replacements so that its business
carried on in connection therewith may be properly conducted at all times.

       9.9.   Inspection.  The Company will, and will cause each Subsidiary to,
permit the Australian Lenders, by their respective representatives and agents,
to inspect any of the properties, corporate books and financial records of the
Company and each Subsidiary, to examine and make copies of the books of
accounts and other financial records of the Company and each Subsidiary, and to
discuss the affairs, finances and accounts of the Company and each Subsidiary
with, and to be advised as to the same by, their respective officers at such
reasonable times and intervals as the Australian Lenders may designate.  Any
information received by the Australian Lenders as a result of the foregoing
shall be included in information subject to the confidentiality provisions set
forth in Exhibit G hereto.

       9.10.  Operation of Properties.  The Company will, and will cause each
Subsidiary to, preserve, operate and maintain, or cause to be preserved,
operated and maintained, the Properties in a good and workmanlike manner
continuously to their economic limit as a prudent operator in accordance with
good oil and gas industry standards.

       9.11.  Delivery of Guaranties.  At the request of the Global
Administrative Agent or the Australian Administrative Agent, the Company shall
at its own expense from time to time cause (i) each of the Company's Borrowing
Base Subsidiaries and (ii) after the occurrence of any Material Adverse Effect
or Downgrade Condition, each of the Company's Subsidiaries to deliver to the
Australian Administrative Agent a duly executed Guaranty, substantially in the
form of Exhibit H, together with such related documents and opinions as the
Australian Administrative Agent may request; provided, however, that no such
Non-Borrowing Base Subsidiary shall be required to deliver such a Guaranty if
such Non-Borrowing Base Subsidiary is prohibited from delivering such Guaranty
pursuant to a contractual obligation, acceptable to the Australian
Administrative Agent, in its reasonable discretion, arising with a Person other
than a Subsidiary or an Affiliate of the Company existing as of the date of
such request by the Australian Administrative Agent.

       9.12.  Environmental Covenant.  The Company will, and will cause each
Subsidiary to,

              (a)    use, operate and maintain all of its facilities and
       properties in material compliance with all Environmental Laws, keep all
       necessary permits, approvals, certificates, licenses and other
       authorizations relating to environmental matters in effect and remain in
       material compliance therewith, and handle all Hazardous Materials in
       material compliance with all applicable Environmental Laws;

              (b)    (i) promptly notify the Global Administrative Agent and
       the Australian Administrative Agent and provide copies upon receipt of
       all material written claims, complaints, notices, liens or inquiries
       relating to the condition of its facilities and properties or compliance
       with Environmental Laws, (ii) within ninety (90) days have dismissed
       with prejudice any actions or proceedings relating to compliance with
       Environmental Laws which could reasonably be expected to result in
       liability to the Company and its Subsidiaries in excess of ten percent
       (10%) of the Company's Consolidated Tangible Net Worth and (iii)
       diligently pursue cure of any material underlying environmental problem
       which forms the basis of any such claim, complaint, notice, lien,
       inquiry, proceeding or action; and





                                       33
<PAGE>   40
              (c)    provide such information and certifications which either
       of the Arrangers or the Australian Administrative Agent may reasonably
       request from time to time to evidence compliance with this Section 9.12.

       9.13.  Further Assurances.  The Company will cure and will cause its
respective Subsidiaries to cure promptly any defects in the creation and
issuance of any Obligations and the execution and delivery of any Guaranty.
The Company and each Subsidiary will at its expense promptly execute and
deliver to the Global Administrative Agent and the Australian Administrative
Agent upon request all such other and further reasonable documents, agreements
and instruments in compliance with, or accomplishment of, the covenants and
agreements of the Company and such Subsidiary in any Australian Loan Document.

       9.14.  Borrowing Notice.  It is a condition precedent to the operation
of this Article IX that the Company has given a Borrowing Notice hereunder.

       9.15.  Existing Acceptance Agreement.  The Company will (a) use the
proceeds of the initial Advance under this Credit Agreement to repay in full
all Obligations of the Company and its Subsidiaries under that certain Amended
and Restated Acceptance Agreement, dated as of May 26, 1994 (as amended, the
"Existing Acceptance Agreement"), among Apache Energy Limited, the various
financial institutions as are or may become parties thereto, and Bank of
Montreal, as Agent, and (b) simultaneously with the initial Advance, (i) cancel
all commitments under the Existing Acceptance Agreement and (ii) obtain the
release of (1) the charge registered against Apache Energy Limited (ASC
registered charge number 294979) in favor of the Bank of Montreal, (2) the
charge registered against Apache Northwest Pty. Ltd. (ASC registered charge
number 294982) in favor of the Bank of Montreal, and (3) any other Lien held by
Bank of Montreal in respect of the Company or any Guarantor.  On the date of
the initial Advance, the Company will provide to the Agents evidence that the
preceding requirements have been satisfied.


                                   ARTICLE X

                              FINANCIAL COVENANTS

       The Company covenants with the Agents and the Australian Lenders that:

       10.1.  Consolidated Tangible Net Worth.  The Parent will maintain
Consolidated Tangible Net Worth of not less than the sum of (i) $825,000,000,
plus (ii) the product of 0.50 times the sum of Consolidated Net Income for each
calendar quarter beginning with the calendar quarter ending June 30, 1996
during which Consolidated Net Income is greater than $0, plus (iii) the product
of 0.50 times the proceeds of the sale by the Parent and its Subsidiaries of
securities (other than securities constituting Indebtedness) net of reasonable
incidental, brokerage and legal costs actually paid to third parties (which
proceeds, in the event of a pooling of interest transaction, shall be deemed to
be one-half of the net addition to the Parent's consolidated balance sheet).

       10.2.  Ratio of EBITDDA to Consolidated Interest.  The Parent shall not
permit the ratio of (i) EBITDDA to (ii) Consolidated Interest Expense for any
four consecutive calendar quarters ending on the last day of any calendar
quarter to be less than 3.70 to 1.0.


                                   ARTICLE XI

                               NEGATIVE COVENANTS

       11.1.  Indebtedness.  The Company will not, nor will it permit any
Borrowing Base Subsidiary to, create, incur or suffer to exist any
Indebtedness, except:

              (a)    Borrowing Base Debt;





                                       34
<PAGE>   41
              (b)    Excluded Principal Debt;

              (c)    The Guaranteed Obligations permitted under Section 11.4
       (whether or not then payable), and intercompany Indebtedness pursuant to
       Investments by the Company permitted by Sections 11.10(d), (e), (f) and
       (g);

              (d)    Indebtedness existing on the date hereof and described in
       Schedule 11.1 hereto;

              (e)    Indebtedness of the type referred to in clause (vi) of the
       definition of Indebtedness;

              (f)    Indebtedness of the type referred to in clause (vii) of
       the definition of Indebtedness in a maximum aggregate amount not in
       excess of $10,000,000; provided such Indebtedness is otherwise permitted
       pursuant to Section 11.11;

              (g)    Indebtedness of the type referred to in clause (viii) of
       the definition of Indebtedness in a maximum aggregate amount not in
       excess of $10,000,000;

              (h)    [Intentionally Omitted];

              (i)    Indebtedness of the type referred to in clause (v) of the
       definition of Indebtedness in a maximum aggregate amount not in excess
       of $5,000,000; and

              (j)    Additional Indebtedness of the Company not included in the
       foregoing clauses (a) through (i) in an aggregate principal amount not
       exceeding $1,000,000.

       11.2.  Merger.  The Company will not, nor will it permit any Borrowing
Base Subsidiary to, amalgamate, merge or consolidate with or into any other
Person or Persons unless:

              (i)    the Company or such Borrowing Base Subsidiary, as the case
       may be, is the surviving entity of such amalgamation, merger or
       consolidation (and if an amalgamation, merger or consolidation between
       the Company and any Borrowing Base Subsidiary, the Company is the
       surviving entity) and no Change of Control occurs, or, with respect to
       any amalgamation, merger or consolidation in which any Person other than
       the Company or any Borrowing Base Subsidiary is the surviving entity,
       such Person becomes, as a result of such amalgamation, merger or
       consolidation, a Borrowing Base Subsidiary of which the Company owns,
       directly or indirectly, 100% of the outstanding capital stock, free and
       clear of all Liens, other than Liens permitted by Section 11.5 and, with
       respect to any amalgamation, merger or consolidation involving any
       Guarantor, such Person shall at its own expense deliver to the
       Australian Administrative Agent a duly executed Guaranty, substantially
       in the form of Exhibit H, together with such related documents and
       opinions as the Australian Administrative Agent may request; and

              (ii)   after giving effect to such amalgamation, merger or
       consolidation, no Default or Unmatured Default shall occur and be
       continuing.

       11.3.  Sales of Properties or Borrowing Base Subsidiaries.  The Company
will not, nor will it permit any of its Borrowing Base Subsidiaries to, lease,
sell, transfer, convey, assign, issue or otherwise dispose of any of its
Properties or any Borrowing Base Subsidiary to any other Person, whether in one
transaction or in a series of transactions, except if the transaction or
transactions fall into one of the following categories:

              (i)    Sales of Hydrocarbon inventory and severed oil and gas in
       the ordinary course of business.

              (ii)   Sales of Properties (other than Hydrocarbon inventory and
       severed oil and gas in the ordinary course of business) and Sales of any
       Borrowing Base Subsidiary which have an aggregate fair market





                                       35
<PAGE>   42
       value (or, with respect to the Sale of a Borrowing Base Subsidiary, the
       amount allocated to such Sale pursuant to Section 2.3(f) of the U.S.
       Credit Agreement) not in excess of $5,000,000 for all such Sales
       permitted pursuant to this clause (ii) during any period occurring
       between successive dates of determination of the Global Borrowing Base
       pursuant to Section 2.3 of the U.S. Credit Agreement.

              (iii)  Sales of Properties (other than sales of Hydrocarbon
       inventory and severed oil and gas in the ordinary course of business)
       and Sales of Borrowing Base Subsidiaries which are not described in the
       foregoing clause (ii) if the Required Lenders under the U.S. Credit
       Agreement and the Required Lenders under this Agreement give prior
       written consent to such Sale in the exercise of their sole discretion;
       provided, however, that concurrently with any such Sale (A) the Global
       Borrowing Base shall be reduced pursuant to Section 2.3(f) of the U.S.
       Credit Agreement, and (B) the Company shall make a mandatory prepayment
       pursuant to Section 4.1(a)(iii) hereof.

              (iv)   A transfer, conveyance or assignment to the Company or a
       Subsidiary of Properties as a result of a merger or consolidation
       permitted pursuant to Section 11.2.

Anything herein contained to the contrary notwithstanding, the Company will
not, nor will it permit any Borrowing Base Subsidiary to, consummate any Sale
otherwise permitted hereunder if it receives therefor consideration (a) other
than cash, other consideration readily convertible to cash or Hydrocarbon
Interests or (b) which is less than the fair market value of the relevant
property or asset.

       11.4.  Guaranteed Obligations.  The Company will not, nor will it permit
any Borrowing Base Subsidiary to, make or suffer to exist any Guaranteed
Obligation (including, without limitation, any Guaranteed Obligation with
respect to the obligations of a Non-Borrowing Base Subsidiary) in an aggregate
amount for all such Persons and Guaranteed Obligations (considering Guaranteed
Obligations for all such Persons without duplication) as of any date of
determination in excess of $10,000,000, except by endorsement of instruments
for deposit or collection in the ordinary course of business; provided,
however, that any obligation which is a Guaranteed Obligation of the Company or
one or more of its Borrowing Base Subsidiaries for purposes of this Agreement
shall not be Indebtedness of such Person for purposes hereof; and provided,
further, that the term "Guaranteed Obligation" shall not include any obligation
of any Person which constitutes Indebtedness of the Company or any of its
Borrowing Base Subsidiaries.

       11.5.  Liens.  The Company will not, nor will it permit any Borrowing
Base Subsidiary to, create, incur, or suffer to exist any Lien in, of or on (i)
any of the Company's and the Borrowing Base Subsidiaries' consolidated assets,
revenues and properties securing an amount greater than $5,000,000 in the
aggregate for all such Liens or (ii) any of the Properties, except in either
case:

              (a)    Liens for taxes, assessments or governmental charges or
       levies on its property if the same shall not at the time be delinquent
       or thereafter can be paid without penalty, or are being contested in
       good faith and by appropriate proceedings and for which adequate
       reserves in accordance with generally accepted accounting principles
       shall have been set aside on its books.

              (b)    Liens imposed by law, such as carriers', warehousemen's
       and mechanics' liens and other similar liens arising in the ordinary
       course of business which secure obligations not more than 60 days past
       due or which are being contested in good faith by appropriate
       proceedings and for which adequate reserves in accordance with generally
       accepted accounting principles shall have been set aside on its books.

              (c)    Liens arising out of pledges or deposits under worker's
       compensation laws, unemployment insurance, old age pensions, or other
       social security or retirement benefits, or similar legislation.

              (d)    Utility easements, building restrictions and such other
       encumbrances or charges against real property as are of a nature
       generally existing with respect to properties of a similar character and
       which do not





                                       36
<PAGE>   43
       in any material way affect the marketability of the same or interfere
       with the use thereof in the business of the Company or the Subsidiaries,
       as the case may be.

              (e)    Liens existing on the date hereof described in Schedule
       11.1 and securing the Indebtedness described in Schedule 11.1 hereto or
       otherwise permitted in connection with Indebtedness of the type
       described in Section 11.1(d) consented to by the Required Lenders in the
       exercise of their sole discretion.

              (f)    Liens arising under operating agreements in respect of
       obligations which are not yet due or which are being contested in good
       faith by appropriate proceedings.

              (g)    Liens reserved in oil, gas and/or mineral leases for bonus
       or rental payments and for compliance with the terms of such leases.

              (h)    Liens pursuant to partnership agreements, oil, gas and/or
       mineral leases, farm-out agreements, division orders, contracts for the
       sale, delivery, purchase, exchange, or processing of oil, gas and/or
       other hydrocarbons, unitization and pooling declarations and agreements,
       operating agreements, development agreements, area of mutual interest
       agreements, forward sales of Hydrocarbons, and other agreements which
       are customary in the oil, gas and other mineral exploration, development
       and production business and in the business of processing of gas and gas
       condensate production for the extraction of products therefrom.

              (i)    Liens securing the Indebtedness permitted in connection
       with Section 11.1(i).

              (j)    Liens associated with the pledging of securities of
       Subsidiaries which are not Borrowing Base Subsidiaries.

       11.6.  Restricted Payments, etc.  On and at all times after the Global
Effective Date, the Company will not and will not permit any of its Borrowing
Base Subsidiaries to make any optional payment or prepayment on, or redemption
of, or redeem, purchase or defease prior to its stated maturity, any
Indebtedness other than Indebtedness incurred under this Agreement or the other
Australian Loan Documents during the occurrence and continuation of any Debt
Limit Excession or if giving effect to such action would result in a Default or
Unmatured Default; and the Company will not, and will not permit any Borrowing
Base Subsidiary to, make any deposit for any of the foregoing purposes.

       11.7.  Transactions with Affiliates.  The Company will not, and will not
permit any of its Borrowing Base Subsidiaries to, enter into, or cause, suffer
or permit to exist any arrangement or contract with any of its other Affiliates
unless such arrangement is either (i) fair and equitable to the Company or such
Borrowing Base Subsidiary, as the case may be, or (ii) is not of a sort which
would not be entered into by a prudent Person in the position of the Company or
such Borrowing Base Subsidiary with, or which is on terms which are less
favorable than are obtainable from, any Person which is not one of its
Affiliates.

       11.8.  Negative Pledges, etc.  The Company will not, and will not permit
any of its Borrowing Base Subsidiaries to, enter into, on or at any time after
the Global Effective Date, any agreement (excluding this Agreement and any
other Global Loan Document) directly or indirectly prohibiting the creation,
assumption or perfection of any Lien upon its properties, revenues or assets,
whether now owned or hereafter acquired, restricting any loans, advances or
other Investments to or in the Company or any of its Borrowing Base
Subsidiaries, restricting the capitalization of the Company or any Borrowing
Base Subsidiary, restricting the ability of any Borrowing Base Subsidiary to
make dividend payments or other distributions or payments (by way of dividends,
advances, repayments of loans or advances, reimbursements or otherwise) or
restricting the ability of the Company or any Borrowing Base Subsidiary to
amend or otherwise modify this Agreement or any other Australian Loan Document.

       11.9.  Regulation U Acquisitions.  The Company will not, nor will it
permit any Borrowing Base Subsidiary to, use any of the proceeds of the Loans
to purchase or carry any "margin stock" (as defined in Regulation U) or to make
any Acquisition, except any of the following:





                                       37
<PAGE>   44
              (i)    Acquisitions not involving "margin stock," where such
       Acquisition shall have been approved or consented to by the board of
       directors or similar governing entity of the Person being acquired; or

              (ii)   Acquisitions involving "margin stock" where such
       Acquisitions shall have been approved or consented to by the board of
       directors or similar governing entity of the Person being acquired; or

              (iii)  Acquisitions of not more than 15% of the outstanding
       equity securities of any issuer, whether or not such securities are
       "margin stock";

provided, however, that the amount paid by the Company to consummate all
Acquisitions of the type described in clause (iii) shall not exceed $3,000,000
in the aggregate.  For purposes of this Section 11.9, the merger of the Company
or any Borrowing Base Subsidiary as permitted under Section 11.2 shall be
deemed to be an Acquisition not involving "margin stock."

       11.10. Investments.  The Company will not, and will not permit any of
its Borrowing Base Subsidiaries to, make, incur, assume or suffer to exist any
Investment in any other Person, except:

              (a)    Investments existing on the Global Effective Date and
       identified in Schedule 11.10;

              (b)    Cash Equivalent Investments;

              (c)    without duplication, Investments permitted as Indebtedness
       pursuant to Section 11.1 and Investments permitted as Guaranteed
       Obligations pursuant to Section 11.4;

              (d)    in the ordinary course of business, Investments by the
       Company or any Borrowing Base Subsidiary in any Guarantor or any
       Subsidiary;

              (e)    Investments in any Person in connection with (i) the
       acquisition, exploration, drilling or development of Hydrocarbon
       Interests, or (ii) costs incurred in connection with gathering,
       processing, transporting and marketing production from Hydrocarbon
       Interests;

              (f)    Investments resulting from a merger or consolidation
       permitted pursuant to Section 11.2;

              (g)    Other Investments in an aggregate amount not to exceed
       $3,000,000 during any calendar year;

provided, however, that

              (1)    any Investment which when made complies with the
       requirements of the definition of the term "Cash Equivalent Investment"
       may continue to be held notwithstanding that such Investment if made
       thereafter would not comply with such requirements; and

              (2)    no Investment otherwise permitted by clause (d), (e), (f)
       or (g) shall be permitted to be made if, immediately before or after
       giving effect thereto, any Default would have occurred and be
       continuing.

       11.11. Hedging Contracts.  The Company will not and will not permit any
of its Borrowing Base Subsidiaries to enter into or become obligated under any
contract for sale for future delivery of oil or gas from the Properties,
whether or not the subject oil or gas is to be delivered, hedging contract,
forward contract, commodity swap agreement, futures contract or other similar
agreement except for such contracts which in the aggregate do not cover at any
time a volume of oil or gas, as the case may be, equal to more than 75% of the
projected production of oil or gas, as the case may be, from the Properties for
the term covered by such contracts.





                                       38
<PAGE>   45
       11.12. Approval of Consents.  In any instance in this Article XI  where
it is provided that an action may be taken by the Company or a Borrowing Base
Subsidiary only with the approval or consent of the Required Lenders, the
failure by an Australian Lender to respond to a request for such approval or
consent within 10 Business Days of receipt of a request for such approval or
consent (or such other length of time as specified by the Global Administrative
Agent or the Australian Administrative Agent in such request) shall be deemed
an approval of, or consent to, such request.

                                  ARTICLE XII

                                    DEFAULTS

       The occurrence of any one or more of the following events shall
constitute a "Default":

       12.1.  Breach of Warranties and Misleading Statements.  Any
representation or warranty made or deemed made pursuant to Article VIII, by or
on behalf of the Company or any Subsidiary to the Australian Lenders, the
Global Administrative Agent, the Australian Administrative Agent, the Co-Agent,
the Arrangers or the Engineering Banks under or in connection with this
Agreement, any Loan, any Australian Loan Document, or any certificate, or,
information delivered in connection with this Agreement, any other Australian
Loan Document is breached or shall be false, incomplete or incorrect on the
date as of which made or deemed made in any material respect.

       12.2.  Nonpayment of Loans, Fees and other Obligations.  Nonpayment of
principal of any Loan when due; or nonpayment of interest upon any Loan or of
any facility fee or other Obligation under any of the Australian Loan Documents
within three (3) days after the same becomes due.

       12.3.  Breach of Certain Covenants.  Except as set forth in the
subsequent sentence, the breach by the Company of any of the terms or
provisions of Section 9.2, 9.3, 9.13, 9.15 or Article X or Article XI.  The
breach by the Company of any of the terms or provisions of (i) Section 11.1
pertaining to Indebtedness of the type referred to in clause (vii) of the
definition of Indebtedness or (ii) Section 11.10(b), which is not remedied
within 3 days of such occurrence.

       12.4.  Default Under Canadian Loan Documents or U.S. Loan Documents.  A
"Default" as defined in the Canadian Loan Documents or U.S. Loan Documents
occurs; provided that the occurrence of an "Unmatured Default" as defined in
the Canadian Loan Documents or U.S. Loan Documents shall constitute an
Unmatured Default under the Australian Loan Documents.

       12.5.  Non-Compliance with this Agreement.  The breach by the Company
(other than a breach which constitutes a Default under any other Section of
this Article XII) of any of the terms, provisions or covenants of this
Agreement which is not remedied within 30 days after written notice from the
Global Administrative Agent, the Australian Administrative Agent or any
Australian Lender.

       12.6.  Cross-Defaults.  Failure of the Company or any Borrowing Base
Subsidiary to pay any Indebtedness in excess of $25,000,000 in aggregate
principal amount when due; or the default by the Company or any Borrowing Base
Subsidiary in the performance of any term, provision or condition contained in
any agreement under which any such Indebtedness was created or is governed, the
effect of which is to cause, or to permit the holder or holders of such
Indebtedness to cause, such Indebtedness to become due prior to its stated
maturity; or any such Indebtedness of the Company or any Borrowing Base
Subsidiary shall be declared to be due and payable or required to be prepaid
(other than by a regularly scheduled payment) prior to the stated maturity
thereof; or the Company or any Borrowing Base Subsidiary shall not pay, or
shall admit in writing its inability to pay, such Indebtedness generally as it
becomes due.

       12.7.  Voluntary Dissolution and Insolvency Proceedings and Actions.
The Company or any Subsidiary shall (a) have an order made for its winding up,
dissolution or administration, (b) make an assignment for the benefit of
creditors, (c) apply for, seek, consent to, or acquiesce in, the appointment of
an administrator, receiver, custodian, trustee,





                                       39
<PAGE>   46
examiner, liquidator or similar official for it or any substantial part of its
property, (d) institute any proceeding seeking an order for relief under
federal or state bankruptcy or insolvency laws as now or hereafter in effect or
seeking to adjudicate it a bankrupt or insolvent, or seeking dissolution,
winding up, administration, liquidation, reorganization, arrangement,
adjustment or composition of it or its debts under any law relating to
bankruptcy, insolvency or reorganization or relief of debtors or fail to file
an answer or other pleading denying the material allegations of any such
proceeding filed against it, (e) take any corporate or partnership action to
authorize or effect any of the foregoing actions set forth in this Section 12.7
or (f) fail to contest in good faith any appointment or proceeding described in
Section 12.8; provided, however, that if any of the foregoing shall occur with
respect to any Non-Borrowing Base Subsidiary, it shall not constitute a Default
hereunder unless it shall result in a Material Adverse Effect.

       12.8.  Involuntary Insolvency Proceedings or Dissolution.  Without the
application, approval or consent of the Company or any Subsidiary, an
administrator, a receiver, trustee, examiner, liquidator or similar official
shall be appointed for such Person or any substantial part of its property, or
a proceeding described in Section 12.7(d) shall be instituted against the
Company or any Subsidiary and such appointment continues undischarged or such
proceeding continues undismissed or unstayed for a period of 30 consecutive
days or an investigation into all or part of the affairs of the Company
commences under companies legislation; provided, however, that if any of the
foregoing shall occur with respect to any Non-Borrowing Base Subsidiary, it
shall not constitute a Default hereunder unless it results in a Material
Adverse Effect.

       12.9.  Condemnation.  Any court, government or governmental agency shall
condemn, seize or otherwise appropriate, or take custody or control of all or
any portion of the Properties with a fair market value in excess of $5,000,000
in the aggregate for all such Properties.

       12.10. Judgments.  The Company or any Subsidiary shall fail within 45
days to pay, bond or otherwise discharge any uninsured portion of any judgment
or order for the payment of money in excess of $5,000,000 in the aggregate for
all such judgments and orders, which is not stayed on appeal or is not
otherwise being appropriately contested in good faith; provided, however, that
if any of the foregoing shall occur with respect to any Non-Borrowing Base
Subsidiary, it shall not constitute a Default hereunder unless it results in a
Material Adverse Effect.

       12.11. Enforcement Against Assets.  Liens are enforced over or
distresses, attachments or other executions are levied or enforced over all or
any of the assets and undertaking of the Company in excess of $5,000,000 in the
aggregate.

       12.12. Other Defaults Under Australian Loan Documents.  The occurrence
of any default by any party to the Australian Loan Documents (other than any
Agent or Lender) under any Australian Loan Document (other than this Agreement
or the Notes) or the breach of any of the terms or provisions by any party to
the Australian Loan Documents (other than any Agent or Lender) of any
Australian Loan Document (other than this Agreement or the Notes) which default
or breach is not remedied within 30 days of such occurrence.

       12.13. Failure of Australian Loan Documents.  Any Australian Loan
Document shall fail to remain in full force or effect or shall be declared null
and void, or any action shall be taken to discontinue or to assert the
invalidity or unenforceability of any Australian Loan Document.

       12.14. Change in Control.  Any Change in Control shall occur.


                                  ARTICLE XIII

             ACCELERATION, WAIVERS, AMENDMENTS, REMEDIES; RELEASES

       13.1.  Acceleration.  If any Default described in Section 12.7 or 12.8
occurs with respect to the Company, (a) the obligations of the Australian
Lenders to make Loans hereunder shall automatically terminate, (b) the
Commitments





                                       40
<PAGE>   47
of each of the Australian Lenders shall terminate and the Obligations shall
immediately become due and payable without any election or action on the part
of any Agent or any Australian Lender and without presentment, demand, protest
or notice of any kind, including, without limitation, notice of acceleration or
notice of intent to accelerate, all of which the Company and each Guarantor
each hereby expressly waives, and (c) the Agents and the Australian Lenders and
each of them shall be able to exercise any rights available to it or them under
the Australian Loan Documents or by law.  If any other Default occurs, (x) the
Required Lenders may terminate or suspend the obligations of the Australian
Lenders to make Loans hereunder, or reduce the Commitment of each of the
Australian Lenders to zero and declare the Obligations to be due and payable,
or both, whereupon the Obligations shall become immediately due and payable,
without presentment, demand, protest or notice of any kind, including without
notice of acceleration or notice of intent to accelerate, all of which the
Company and each Guarantor each hereby expressly waives, and (y) the Agents and
the Australian Lenders and each of them shall be able to exercise any rights
available to it or them under the Australian Loan Documents, any Guaranty or by
law.  The Australian Administrative Agent hereby agrees, at the written
direction of the Required Lenders, subject to the provisions of Article XV, to
exercise any of the foregoing rights available to it.

       13.2.  Amendments.  Subject to the provisions of this Article XIII, the
Required Lenders (or the Australian Administrative Agent with the consent in
writing of the Required Lenders) and the Company may enter into agreements
supplemental hereto for the purpose of adding or elucidating any provisions to
the Australian Loan Documents or changing in any manner the rights and remedies
of the Australian Lenders or the Company hereunder or waiving any Default
hereunder; provided, however, that no such supplemental agreement shall,
without the consent of each Australian Lender affected thereby:

              (a)    Extend the maturity of any Loan, Note or payment under a
       Guaranty, or reduce the principal amount of any of them, or reduce the
       rate or extend the time of payment of interest or fees thereon.

              (b)    Reduce the percentage specified in the definition of
       Required Lenders.

              (c)    Extend the Termination Date or reduce the amount or extend
       the payment date for, the mandatory payments required under Section 4.1
       or increase the amount of the Commitment of any Australian Lender
       hereunder or permit the Company to assign its rights or obligations
       under this Agreement or under any other Australian Loan Document.

              (d)    Amend this Section 13.2.

No amendment of any provision of this Agreement relating to any Agent shall be
effective without the written consent of such Agent.  The Australian
Administrative Agent may waive payment of the fee required under Section
17.3(b) without obtaining the consent of any of the Australian Lenders.

       13.3.  Preservation of Rights.  All remedies contained in the Australian
Loan Documents or afforded by law shall be cumulative and all shall be
available to the Agents and the Australian Lenders until the Obligations have
been paid in full.  No delay or omission of the Australian Lenders, the Agents
or any of them to exercise any right under the Australian Loan Documents shall
impair such right or be construed to be a waiver of any Default or an
acquiescence therein, and the making of a Loan notwithstanding the existence of
a Default or the inability of the Company to satisfy the conditions precedent
to such Loan shall not constitute any waiver or acquiescence.  Any single or
partial exercise of any such right shall not preclude other or further exercise
thereof or the exercise of any other right, and no waiver, amendment or other
variation of the terms, conditions or provisions of the Australian Loan
Documents whatsoever shall be valid unless in writing signed by the Australian
Lenders and the Agents required pursuant to Section 13.2, and then only to the
extent specifically set forth in such writing.





                                       41
<PAGE>   48
                                  ARTICLE XIV

                               GENERAL PROVISIONS

       14.1.  [Intentionally Omitted].

       14.2.  Governmental Regulation.  Anything contained in this Agreement to
the contrary notwithstanding, no Australian Lender shall be obligated to extend
credit to the Company in violation of any limitation or prohibition provided by
any applicable statute or regulation.

       14.3.  Taxes.  Subject to specific provisions in this Agreement to the
contrary, any taxes (excluding income taxes) or other similar assessments or
charges payable or ruled payable by any governmental authority in respect of
the Australian Loan Documents shall be paid by the Company, together with
interest and penalties, if any.

       14.4.  Headings.  Article and section headings in the Australian Loan
Documents are for convenience of reference only, and shall not govern the
interpretation of any of the provisions of the Australian Loan Documents.

       14.5.  Entire Agreement.  The Australian Loan Documents embody the
entire agreement and understanding among the Company, the Agents and the
Australian Lenders and supersede all prior agreements and understandings among
the Company, the Agents and the Australian Lenders relating to the subject
matter thereof.

       14.6.  Several Obligations.  The respective obligations of the
Australian Lenders hereunder are several and not joint and no Australian Lender
shall be the partner or agent of any other (except to the extent to which an
Agent is authorized to act as such).  The failure of any Australian Lender to
perform any of its obligations hereunder shall not relieve any other Australian
Lender from any of its obligations hereunder.  This Agreement is not intended
to, and shall not be construed so as to, confer any right or benefit upon any
Person other than the parties to this Agreement and their respective successors
and assigns.

       14.7.  Reimbursement of Costs and Expenses; Indemnification.

       (a)    Reimbursement of Costs and Expenses.  The Company shall reimburse
each Agent for any reasonable costs and out-of-pocket expenses (including fees
and expenses of consultants and attorneys' fees and expenses for such Agent)
paid or incurred by such Agent in connection with the preparation, review,
execution, delivery, amendment, modification and administration of the
Australian Loan Documents including, without limitation, the fees incurred by
such Agent in connection with its initial evaluation of the Properties.  The
Company shall reimburse each Agent and the Australian Lenders for any
reasonable costs and out-of-pocket expenses (including attorneys' fees and
expenses for the Agent and the Australian Lenders) paid or incurred by any
Agent or any Australian Lender in connection with the collection and
enforcement of the Australian Loan Documents.

       (b)    Indemnification.  In consideration of the execution and delivery
of this Agreement by each Australian Lender and the extension of the
Commitments, the Company, jointly and severally, hereby indemnifies, exonerates
and holds each Agent and each Australian Lender, and their respective
directors, agents, officers and employees ("Indemnified Persons") free and
harmless from and against any and all losses, claims, damages, penalties,
judgments, liabilities, actions, suits, costs and expenses (including, without
limitation, all expenses of litigation or preparation therefor whether or not
any Agent or any Australian Lender or any Indemnified Person is a party thereto
and all other attorneys' fees and disbursements) ("Claims") which any of them
may pay or incur as a result of, arising out of, or relating to,

              (i)    this Agreement, the other Australian Loan Documents, the
       transactions contemplated hereby or thereby;

              (ii)   the direct or indirect application or proposed application
       of the proceeds of any Loan hereunder;





                                       42
<PAGE>   49
              (iii)  any transaction financed or to be financed in whole or in
       part, directly or indirectly, with the proceeds of any Loan;

              (iv)   any investigation, litigation or proceeding related to any
       acquisition or proposed acquisition by the Company or any of its
       Subsidiaries of all or any portion of the stock or assets of any Person,
       whether or not any Agent or any Australian Lender is party thereto;

              (v)    any investigation, litigation or proceeding related to any
       environmental cleanup, audit, compliance or other matter relating to any
       Environmental Law or the condition of any facility or property owned,
       leased or operated by the Company or any Subsidiary;

              (vi)   the presence on or under, or the escape, seepage, leakage,
       spillage, discharge, emission, discharging or Releases from, any
       facility or property owned, leased or operated by the Company or any
       Subsidiary thereof of any Hazardous Material (including any losses,
       liabilities, damages, injuries, costs, expenses or claims asserted or
       arising under any Environmental Law), regardless of whether caused by,
       or within the control of, the Company or such Subsidiary;

              (vii)  any misrepresentation, inaccuracy or any breach in or of
       Section 8.19 or Section 9.12; or

              (viii) any investigation, litigation or proceeding related to any
       Investment by the Company or any of its Subsidiaries in any Person,
       whether or not any Agent or any Australian Lender is party thereto;

(the foregoing collectively the "Indemnified Liabilities"), except to the
extent that a final order of a court of competent jurisdiction finds that such
Indemnified Liability arises solely from such Indemnified Person's gross
negligence or wilful misconduct.  If and to the extent that the foregoing
undertaking may be unenforceable for any reason, the Company hereby agrees to
make the maximum contribution to the payment and satisfaction of each of the
Indemnified Liabilities which is permissible under applicable law.  The
obligations of the Company under this Section 14.7 shall survive the
termination of this Agreement or any non-assumption of this Agreement in a
bankruptcy or similar proceeding.  The Company shall be obligated to indemnify
the Indemnified Persons for all Claims regardless of whether the Company had
knowledge of the facts and circumstances giving rise to such Claims.

       14.8.  Numbers of Documents.  All statements, notices, closing
documents, and requests hereunder shall be furnished to the Australian
Administrative Agent with sufficient counterparts so that the Australian
Administrative Agent may furnish one to each of the Australian Lenders and each
of the Agents.

       14.9.  Severability of Provisions.  Any provision in any Australian Loan
Document that is held to be inoperative, unenforceable, or invalid in any
jurisdiction shall, as to that jurisdiction, be inoperative, unenforceable, or
invalid without affecting the remaining provisions in that jurisdiction or the
operation, enforceability, or validity of that provision in any other
jurisdiction, and to this end the provisions of all Australian Loan Documents
are declared to be severable.

       14.10. Nonliability of Australian Lenders.  The relationship between the
Company on the one hand and the Australian Lenders and the Agents on the other
hand shall be solely that of borrower and lender.  None of the Agents nor any
Australian Lender shall have any fiduciary responsibilities to the Company or
any of its Subsidiaries or Affiliates.  None of the Agents nor any Australian
Lender undertakes any responsibility to the Company or any of its Subsidiaries
or Affiliates to review or inform the Company of any matter in connection with
any phase of the Company's or such Subsidiary's or Affiliate's business or
operations.

       14.11. CHOICE OF LAW.  THE AUSTRALIAN LOAN DOCUMENTS (OTHER THAN THOSE
CONTAINING A CONTRARY EXPRESS CHOICE OF LAW PROVISION) SHALL BE CONSTRUED IN
ACCORDANCE WITH THE INTERNAL LAWS (AND NOT THE LAW OF CONFLICTS) OF THE STATE
OF NEW SOUTH WALES AND OF AUSTRALIA APPLICABLE THEREIN.





                                       43
<PAGE>   50
       14.12. CONSENT TO JURISDICTION.  ANY LITIGATION BASED HEREON, OR ARISING
OUT OF, UNDER, OR IN CONNECTION WITH, THIS AGREEMENT OR ANY OTHER AUSTRALIAN
LOAN DOCUMENT, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, STATEMENTS (WHETHER
VERBAL OR WRITTEN) OR ACTIONS OF ANY AGENT, THE AUSTRALIAN LENDERS OR THE
COMPANY SHALL BE BROUGHT AND MAINTAINED EXCLUSIVELY IN THE COURTS OF THE STATE
OF NEW SOUTH WALES; PROVIDED, HOWEVER, THAT ANY SUIT SEEKING ENFORCEMENT
AGAINST ANY COLLATERAL OR OTHER PROPERTY MAY BE BROUGHT, AT ANY AGENT'S OPTION,
IN THE COURTS OF ANY JURISDICTION WHERE SUCH COLLATERAL OR OTHER PROPERTY MAY
BE FOUND.  THE COMPANY HEREBY EXPRESSLY AND IRREVOCABLY SUBMITS TO THE
JURISDICTION OF THE COURTS OF THE STATE OF NEW SOUTH WALES FOR THE PURPOSE OF
ANY SUCH LITIGATION AS SET FORTH ABOVE AND IRREVOCABLY AGREES TO BE BOUND BY
ANY JUDGMENT RENDERED THEREBY IN CONNECTION WITH SUCH LITIGATION.  THE COMPANY
FURTHER IRREVOCABLY CONSENTS TO THE SERVICE OF PROCESS BY REGISTERED MAIL,
POSTAGE PREPAID, OR BY PERSONAL SERVICE WITHIN OR WITHOUT THE STATE OF NEW
SOUTH WALES.  THE COMPANY HEREBY EXPRESSLY AND IRREVOCABLY WAIVES, TO THE
FULLEST EXTENT PERMITTED BY LAW, ANY OBJECTION WHICH IT MAY HAVE OR HEREAFTER
MAY HAVE TO THE LAYING OF VENUE OF ANY SUCH LITIGATION BROUGHT IN ANY SUCH
COURT REFERRED TO ABOVE AND ANY CLAIM THAT ANY SUCH LITIGATION HAS BEEN BROUGHT
IN AN INCONVENIENT FORUM.  TO THE EXTENT THAT THE COMPANY HAS OR HEREAFTER MAY
ACQUIRE ANY IMMUNITY FROM JURISDICTION OF ANY COURT OF FROM ANY LEGAL PROCESS
(WHETHER THROUGH SERVICE OR NOTICE, ATTACHMENT PRIOR TO JUDGMENT, ATTACHMENT IN
AID OF EXECUTION OR OTHERWISE) WITH RESPECT TO ITSELF OR ITS PROPERTY, THE
COMPANY HEREBY IRREVOCABLY WAIVES SUCH IMMUNITY IN RESPECT OF ITS OBLIGATIONS
UNDER THIS AGREEMENT AND THE OTHER AUSTRALIAN LOAN DOCUMENTS.

       14.13. Confidentiality.  Each Australian Lender and each Agent agrees to
hold any confidential information which it may receive from the Company
pursuant to this Agreement in confidence in accordance with the provisions set
forth in Exhibit G hereto.  In addition to the disclosures permitted in such
provisions, the Australian Lenders and the Agents each shall be permitted to
make disclosures of such information in accordance with Section 17.4.


                                   ARTICLE XV

              THE AGENTS, THE ARRANGERS AND THE ENGINEERING BANKS

       15.1.  Appointment of Agents.  First Chicago is hereby appointed Global
Administrative Agent hereunder and under each other Australian Loan Document,
Chase Securities Australia Limited is hereby appointed Australian
Administrative Agent hereunder and under each other Australian Loan Document,
First Chicago Capital Markets, Inc. is hereby appointed as an Arranger
hereunder and under each other Australian Loan Document, Chase Securities Inc.
is hereby appointed as an Arranger hereunder and under each other Australian
Loan Document, and each of First Chicago and Chase is appointed as an
Engineering Bank hereunder and each of the Australian Lenders irrevocably
authorizes each such Agent to act in such capacities.  Each Agent agrees to act
as such upon the express conditions contained in this Article XV.  No Agent
shall have a fiduciary relationship in respect of any Australian Lender by
reason of this Agreement or any of the other Australian Loan Documents.

       15.2.  Powers.  Each Agent shall have and may exercise such powers under
this Agreement and the other Australian Loan Documents as are specifically
delegated to it by the terms of each thereof, together with such powers as are
reasonably incidental thereto.  None of the Agents shall have implied duties to
the Australian Lenders, or any obligation to the Australian Lenders to take any
action thereunder except any action by an Agent specifically provided by the
Australian Loan Documents to be taken by such Agent.

       15.3.  General Immunity.  No Agent nor any of its respective directors,
officers, agents or employees shall be liable to any Australian Lender or any
of the other Agents for any action taken or omitted to be taken by it or them





                                       44
<PAGE>   51
hereunder or under any other Australian Loan Document or in connection herewith
or therewith except for its or their own gross negligence or wilful misconduct
as established by final order of a court of competent jurisdiction.

       15.4.  No Responsibility for Loans, Recitals, etc.  No Agent nor any of
its respective directors, officers, agents or employees shall be responsible
for or have any duty to ascertain, inquire into, or verify (i) any statement,
warranty or representation made in connection with any Australian Loan Document
or any borrowing hereunder; (ii) the performance or observance of any of the
covenants or agreements of any obligor under any Australian Loan Document;
(iii) the satisfaction of any condition specified in Article VII, except
receipt by an Agent of items required to be delivered to such Agent unless such
condition shall have been waived in accordance with Section 13.2; or (iv) the
validity, effectiveness or genuineness of any Australian Loan Document or any
other agreement, instrument or writing furnished in connection therewith.

       15.5.  Action on Instructions of Australian Lenders.  Each Agent shall
in all cases be fully protected in acting, or in refraining from acting,
hereunder and under any other Australian Loan Document in accordance with
written instructions signed by the Required Lenders, and such instructions and
any action taken or failure to act pursuant thereto shall be binding on all of
the Australian Lenders, the other Agents and all holders of Notes.

       15.6.  Employment of Agents and Counsel.  Each Agent may execute any of
its duties as Agent hereunder and under any other Australian Loan Document by
or through employees, agents, and attorneys-in-fact and shall not be answerable
to the Australian Lenders, except as to money or securities received by it or
its authorized agents, for the default or misconduct of any such agents or
attorneys-in-fact selected by it with reasonable care.  Each Agent shall be
entitled to advice of counsel concerning all matters pertaining to the agency
hereby created and its respective duties hereunder and under any other
Australian Loan Document.

       15.7.  Reliance on Documents; Counsel.  Each Agent shall be entitled to
rely upon any Note, notice, consent, certificate, affidavit, letter, telegram,
statement, paper or document believed by it to be genuine and correct and to
have been signed or sent by the proper person or persons, and, in, respect to
legal matters, upon the opinion of counsel selected by such Agent, which
counsel may be employees of the Agents or any of them.

       15.8.  Reimbursement and Indemnification.  Each Australian Lender agrees
to reimburse and indemnify each of the Australian Administrative Agent, the
Global Administrative Agent, each Arranger and each Engineering Bank ratably in
proportion to such Australian Lender's Aggregate Commitments, (i) for any
amounts (other than principal or interest) not reimbursed by the Company or any
Guarantor for which such Agent is entitled to reimbursement by the Company
under the Australian Loan Documents, and (ii) for any liabilities, obligations,
losses, damages, penalties, actions, judgments, suits, costs, expenses or
disbursements of any kind and nature whatsoever which may be imposed on,
incurred by or asserted against such Agent in any way relating to or arising
out of the Australian Loan Documents or any other document delivered in
connection therewith or the transactions contemplated thereby, or the
enforcement of any of the terms thereof or of any such other documents,
provided that no Australian Lender shall be so liable to the extent any of the
foregoing is found by a final order of a court of competent jurisdiction to
have arisen solely from such Agent's gross negligence or willful misconduct.

       15.9.  Rights as an Australian Lender.  With respect to its Commitments,
Loans made by it and the Notes issued to it, each Agent shall have the same
rights and powers hereunder and under each other Australian Loan Document as
any Australian Lender and may exercise the same as though it did not hold such
role, and the term "Australian Lender" or "Australian Lenders" shall, unless
the context otherwise indicates, include each of them in its individual
capacity.  In addition to, and not by way of limitation of the rights set forth
in Section 15.2 and this Section 15.9, each Agent may accept deposits from,
lend money to, and generally engage in any kind of banking or trust business
with the Company or any Subsidiary or any other Affiliate of the Company as if
it did not hold such role.

       15.10. Australian Lender Credit Decision.  Each Australian Lender
acknowledges that it has, independently and without reliance upon any Agent or
any other Australian Lender and based on the financial statements prepared by
the Parent and such other documents and information as it has deemed
appropriate, made its own credit analysis and





                                       45
<PAGE>   52
decision to enter into this Agreement and the other Australian Loan Documents.
Each Australian Lender also acknowledges that it will, independently and
without reliance upon any Agent or any other Australian Lender 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
this Agreement and the other Australian Loan Documents.

       15.11. Certain Successor Agents.  Any Agent may resign at any time by
giving thirty (30) days' prior written notice thereof to the Australian Lenders
and the Company.  Upon any such resignation, the Company shall, if no Default
or Unmatured Default has occurred and is continuing, have the right (subject to
the consent of the Required Lenders) to appoint, on behalf of the Company and
the Australian Lenders, an Australian Lender as a successor Agent.  If no
successor Agent shall have been so appointed by the Company and shall have
accepted such appointment within thirty (30) days after the retiring Agent's
giving notice of resignation or if a Default or Unmatured Default has occurred
and is continuing, then the retiring Agent may appoint, on behalf of the
Company and the Australian Lenders, an Australian Lender as a successor Agent;
provided, however, that the Company may, within the one year period following
the appointment of a successor Agent, and upon thirty (30) days' written notice
to the Australian Lenders, remove the successor Agent and appoint a successor
Agent acceptable to the Company (subject to the consent of the Required
Lenders).  Upon the acceptance of any appointment as Agent hereunder by a
successor Agent, such successor Agent shall thereupon succeed to and become
vested with all the rights, powers, privileges and duties of the retiring
Agent, and the retiring Agent shall be discharged from its duties and
Obligations (but not any liability arising from its gross negligence or wilful
misconduct as established by a final order of a court of competent
jurisdiction) hereunder and under the other Australian Loan Documents.  After
any retiring Agent's resignation hereunder as Agent, the provisions of this
Article XV shall continue in effect for its benefit in respect of any actions
taken or omitted to be taken by it while it was acting as an Agent hereunder
and under the other Australian Loan Documents.


                                  ARTICLE XVI

                            SETOFF; RATABLE PAYMENTS

       16.1.  Setoff.  In addition to, and without limitation of, any rights of
the Australian Lenders under applicable law, if the Company becomes insolvent,
however evidenced, or any Default or Unmatured Default occurs, any indebtedness
from any Australian Lender to the Company (including all account balances,
whether provisional or final and whether or not collected or available) may be
offset and applied toward the payment of the Obligations owing to such
Australian Lender, whether or not the Obligations, or any part hereof, shall
then be due and payable.

       16.2.  Ratable Payments.  If any Australian Lender, whether by setoff or
otherwise, has payment made to it upon its Loans in a greater proportion than
it would have received pursuant to an allocation using the method set forth in
Section 4.2 or 4.3, such Australian Lender agrees, promptly upon demand, to
make such payments as are necessary so that after such payments each Australian
Lender will have received its correct payment proportion as calculated pursuant
to the allocation method set forth in Section 4.2 or 4.3.  If any Australian
Lender, whether in connection with setoff or amounts which might be subject to
setoff or otherwise, receives collateral or other protection for its
Obligations or such amounts which may be subject to set off, such Australian
Lender agrees, promptly upon demand, to take such action necessary such that
all Australian Lenders share in the benefits of such collateral ratably in
proportion to the Obligations owing to each of them.  In case any such payment
is disturbed by legal process, or otherwise, appropriate further adjustments
shall be made.


                                  ARTICLE XVII

              BENEFIT OF AGREEMENT; SUBSTITUTIONS; PARTICIPATIONS

       17.1.  Successors and Assigns.  The terms and provisions of the
Australian Loan Documents shall be binding upon and inure to the benefit of the
Company, the Agents and the Australian Lenders and their respective





                                       46
<PAGE>   53
successors and assigns, except that the Company shall not have the right to
assign its rights or obligations under the Australian Loan Documents and any
substitution by any Australian Lender must be made in compliance with Section
17.3.  The Australian Administrative Agent may treat the payee of any Note as
the owner thereof for all purposes hereof unless and until such payee complies
with Section 17.3 in the case of a substitution thereof or, in the case of any
other transfer, a written notice of the transfer is filed with such Agent.  Any
transferee of a Note agrees by acceptance thereof to be bound by all the terms
and provisions of the Australian Loan Documents.  Any request, authority or
consent of any Person, who at the time of making such request or giving such
authority or consent is the holder of any Note, shall be conclusive and binding
on any subsequent holder or transferee of such Note or of any Note or Notes
issued in exchange therefor.

       17.2.  Participations.

       (a)    Any Australian Lender, in the ordinary course of its business and
in accordance with applicable law, at any time may transfer to one or more
banks or other entities organized under the laws of and resident in Australia
for purposes of the Income Tax Assessment Act 1936 (Cth) ("Participants")
participating interests in any Loan owing to such Australian Lender, any Note
held by such Australian Lender, any Commitment of such Australian Lender or any
other interest of such Australian Lender under the Australian Loan Documents.
In the event of any such sale by an Australian Lender of participating
interests to a Participant, such Australian Lender's Obligations under the
Australian Loan Documents shall remain unchanged, such Australian Lender shall
remain solely responsible to the other parties hereto for the performance of
such obligations, such Australian Lender shall remain the holder of any such
Note or Obligation for all purposes under the Australian Loan Documents, and
the Company and the Agents shall continue to deal solely and directly with such
Australian Lender in connection with such Australian Lender's rights and
obligations under the Australian Loan Documents.  Any stamp duty payable on or
in respect of such a sale which does not occur during the continuation of a
Default shall be paid by the Participant.

       (b)    Each Australian Lender shall retain the sole right to approve,
without the consent of any Participant, any amendment, modification or waiver
of any provision of the Australian Loan Documents other than any amendment,
modification or waiver with respect to any Loan or Commitment in which such
Participant has an interest which forgives principal, interest or fees or
reduces the interest rate or fees payable with respect to any such Loan or
Commitment, postpones any date fixed for any regularly-scheduled payment of
principal of, or interest or fees on, or reimbursement obligation with respect
to, any such Loan or Commitment, releases any guarantor of any such Obligation.

       (c)    The Company agrees that each Participant shall be deemed to have
the right of setoff provided in Section 16.1 in respect of its participating
interest in amounts owing under the Australian Loan Documents to the same
extent as if the amount of its participating interest were owing directly to it
as an Australian Lender under the Australian Loan Documents, provided that each
Australian Lender shall retain the right of setoff provided in Section 16.1
with respect to the amount of participating interests sold to each Participant.
The Australian Lenders agree to share with each Participant, and each
Participant, by exercising the right of setoff provided in Section 16.1, agrees
to share with each Australian Lender, any amount received pursuant to the
exercise of its right of setoff, such amounts to be shared in accordance with
Section 16.2 as if each Participant were an Australian Lender.  The Company
also agrees that each Participant shall be entitled to the benefits of Sections
6.1 and 6.3 with respect to its participation in the Commitments or the Loans
outstanding from time to time; provided, that no Participant shall be entitled
to receive any greater amount pursuant to such Sections than the transferor
Australian Lender would have been entitled to receive in respect of the amount
of the participation transferred by such transferor Australian Lender to such
Participant had no such transfer occurred.





                                       47
<PAGE>   54
       17.3.  Substitutions.

       (a)    Any Australian Lender may, in the ordinary course of its business
and in accordance with applicable law, at any time transfer by way of
substitution to one or more banks or other entities which are organized under
the laws of and are residents in Australia for purposes of the Income Tax
Assessment Act 1936 (Cth) ("Substituting Lenders") all or any part of its
rights and obligations under the Australian Loan Documents subject to a minimum
of $5,000,000 or such lesser amount as may be agreed to by the Company;
provided that with respect to any Substituting Lender which is not an Affiliate
of such Australian Lender, such transfer shall require the consent of the
Company, which consent of the Company shall not be unreasonably withheld or
delayed.  Such transfer shall be effected by a substitution certificate
("Substitution Certificate") substantially in the form of Exhibit D hereto.
The consent of the Australian Administrative Agent shall also be required prior
to a transfer becoming effective with respect to a Substituting Lender which is
not organized under the laws of and resident in Australia for purposes of the
Income Tax Assessment Act 1936 (Cth). All such consents shall be substantially
in the form attached as Exhibits "D-II" or "D-III" to Exhibit D hereto and
shall not be unreasonably withheld (provided that the withholding of consent to
a transfer with respect to a Substituting Lender which is not organized under
the laws of and resident in Australia for purposes of the Income Tax Assessment
Act 1936 (Cth) shall not be considered unreasonable).

       (b)    Upon (i) delivery to the Australian Administrative Agent of a
notice of substitution, substantially in the form attached as Exhibit "D-I" to
Exhibit D hereto (a "Notice of Substitution"), together with any consents
required by Section 17.3.(a), and (ii) payment of a $3,000 fee to the
Australian Administrative Agent for processing such substitution, and (iii)
execution of the Substitution Certificate by all parties to it, such
substitution shall become effective on the substitution date specified in such
Substitution Certificate ("effective date"); provided, however, that any
amounts paid by the Company to, or for the benefit of, the retiring Australian
Lender, on or before the execution date of the Substitution Certificate, if
such date is later than the effective date of the substitution, shall be deemed
paid to and for the benefit of the Substituting Lender for all purposes.  On
and after the effective date of such substitution but subject to the terms of
the Substitution Certificate, such Substituting Lender shall for all purposes
be an Australian Lender, party to this Agreement and any other Australian Loan
Document, including, without limitation, the Intercreditor Agreement, executed
by the Australian Lenders, and shall have all the rights and obligations of an
Australian Lender under the Australian Loan Documents, including, without
limitation, the Intercreditor Agreement, to the same extent as if it were an
original party hereto, shall be deemed an Australian Lender for all purposes of
the Australian Loan Documents, including, without limitation, the Intercreditor
Agreement, and no further consent or action by the Company, the Australian
Lenders or any Agent shall be required to release the retiring Australian
Lender, with respect to the percentages of the Commitment, and the Loans
assigned to such Substituting Lender and the retiring Australian Lender shall
henceforth be so released, and each reference herein and in the other
Australian Loan Documents, including, without limitation, the Intercreditor
Agreement, to the retiring Australian Lender shall thereafter be deemed a
reference to the Substituting Lender for all purposes.  Upon the consummation
of any substitution to a Substituting Lender pursuant to this Section 17.3(b),
the Company shall issue replacement Notes to such retiring Australian Lender
and shall issue new Notes or, as appropriate, replacement Notes, to such
Substituting Lender, in each case in principal amounts reflecting their
respective Commitments, as adjusted pursuant to such substitution.

       17.4.  Dissemination of Information.  The Company authorizes each Agent
and each Australian Lender to disclose to any Participant or Substituting
Lender or any other Person acquiring an interest in the Australian Loan
Documents by operation of law (each a "Transferee") and any prospective
Transferee any and all information in such Australian Lender's possession
concerning the creditworthiness of the Company and the Subsidiaries, provided
that such Transferee and prospective Transferee agrees in writing to be bound
by Section 14.13 of this Agreement.





                                       48
<PAGE>   55
                                 ARTICLE XVIII

                                    NOTICES

       18.1.  Giving Notice.  Except as otherwise permitted by Section 3.7 with
respect to borrowing notices, all notices and other communications provided to
any party hereto under this Agreement or any other Australian Loan Document
shall be in writing or by telex or by facsimile and addressed or delivered to
such party at its address set forth below its signature hereto or at such other
address as may be designated by such party in a notice to the other parties.
Any notice, if mailed and properly addressed with postage prepaid, shall be
deemed given when received; any notice, if transmitted by telex or facsimile,
shall be deemed given when transmitted (answerback confirmed in the case of
telexes).

       18.2.  Change of Address.  The Company, each Agent, and each Australian
Lender may change the address for service of notice upon it by a notice in
writing to the other parties hereto.


                                  ARTICLE XIX

                                  COUNTERPARTS

       This Agreement may be executed in any number of counterparts, all of
which taken together shall constitute one agreement, and any of the parties
hereto may execute this Agreement by signing any such counterpart.  This
Agreement shall be effective when it has been executed by the Company, the
Agents and the Australian Lenders and each party has notified the Australian
Administrative Agent and the Global Administrative Agent, by telex, facsimile
or telephone, that it has taken such action.


                                   ARTICLE XX

                               NO ORAL AGREEMENTS

       THIS WRITTEN AGREEMENT, THE NOTES, AND THE OTHER AUSTRALIAN LOAN
DOCUMENTS REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL
AGREEMENTS OF THE PARTIES.  THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG THE
PARTIES.



                      [SIGNATURES BEGIN ON FOLLOWING PAGE]





                                       49
<PAGE>   56
       EACH ATTORNEY EXECUTING THIS AGREEMENT STATES THAT HE HAS NO NOTICE OF
THE REVOCATION OR SUSPENSION OF HIS POWER OF ATTORNEY.

       IN WITNESS WHEREOF, the Company, the Australian Lenders and the Agents
have executed this Agreement as of the date first above written.



                                     APACHE ENERGY LIMITED (ACN 009 301 964)


                                     By:  /s/ APACHE ENERGY LIMITED
                                          --------------------------------------
                                     Name:   Matthew W. Dundrea
                                     Title:  Treasurer


                                     Address:   Apache Canada Ltd.
                                                c/o Apache Corporation
                                                2000 Post Oak Boulevard
                                                Suite 100
                                                Houston, Texas  77056-4400

                                     Attention: Matthew W. Dundrea, Treasurer

                                     Telephone: (713) 296-6640
                                     Facsimile: (713) 296-6458


                                     with a copy to:

                                     Zurab S. Kobiashvili
                                     Vice President and General Counsel
                                     2000 Post Oak Boulevard, Suite 100
                                     Houston, Texas  77056-4400

                                     Telephone: (713) 296-6204
                                     Facsimile: (713) 296-6458





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 1
<PAGE>   57

                                     APACHE OIL AUSTRALIA PTY. LIMITED (ACN 050
                                     611 688)


                                     By:  /s/ APACHE OIL AUSTRALIA PTY. LIMITED 
                                          --------------------------------------
                                     Name:   Matthew W. Dundrea
                                     Title:  Treasurer


                                     Address:   Apache Canada Ltd.
                                                c/o Apache Corporation
                                                2000 Post Oak Boulevard
                                                Suite 100
                                                Houston, Texas  77056-4400

                                     Attention: Matthew W. Dundrea, Treasurer

                                     Telephone: (713) 296-6640
                                     Facsimile: (713) 296-6458


                                     with a copy to:

                                     Zurab S. Kobiashvili
                                     Vice President and General Counsel
                                     2000 Post Oak Boulevard, Suite 100
                                     Houston, Texas  77056-4400

                                     Telephone: (713) 296-6204
                                     Facsimile: (713) 296-6458





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 2
<PAGE>   58

                                     FIRST CHICAGO CAPITAL MARKETS, INC., as
                                     Arranger


                                   By:  /s/ FIRST CHICAGO CAPITAL MARKETS, INC. 
                                        --------------------------------------
                                   Name:
                                   Title:

                                   Address:   One First National Plaza
                                              Chicago, Illinois  60670

                                   Attention: Thomas E. Both

                                   Telephone: (312) 732-7268
                                   Facsimile: (312) 732-2038





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 3
<PAGE>   59

                                     CHASE SECURITIES INC., as Arranger


                                     By:  /s/ CHASE SECURITIES INC. 
                                          --------------------------------------
                                     Name:   Tod Benton
                                     Title:  Managing Director

                                     Address:   707 Travis
                                                5th Floor North
                                                Houston, Texas  77002

                                     Attention: Lori Vetters

                                     Telephone: (713) 216-4332
                                     Facsimile: (713) 216-4117





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 4
<PAGE>   60

                                     THE FIRST NATIONAL BANK OF CHICAGO, as
                                     Global Administrative Agent and Engineering
                                     Bank


                                    By:  /s/ THE FIRST NATIONAL BANK OF CHICAGO 
                                          --------------------------------------
                                    Name:   W. Walter Green
                                    Title:  Attorney-in-fact for The First
                                            National Bank of Chicago

                                    Address:   Syndications and
                                               Placements/Agency
                                               Suite 0353, 15th Floor
                                               One First National Plaza
                                               Chicago, IL  60670

                                    Attention: Mr. Thomas E. Both

                                    Telephone: (312) 732-7268
                                    Facsimile: (312) 732-2038





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 5
<PAGE>   61

                                     CHASE SECURITIES AUSTRALIA LIMITED (ACN 002
                                     888 011), as Australian Administrative
                                     Agent

SIGNED on behalf of              )
CHASE SECURITIES AUSTRALIA       )
LIMITED                          )
by its attorney in the           )
presence of:                     )   /s/ CHASE SECURITIES AUSTRALIA LIMITED 
                                     -------------------------------------------
                                     Attorney

                                      Lori Vetters                              
- ---------------------------------    -------------------------------------------
Witness                              Print Name

 Christopher Click               
- ---------------------------------
Print Name

                                     Address:   Level 35, AAP Centre
                                                259 George Street
                                                Sydney, NSW 2000

                                     Attention: Mr. Tony Benecke

                                     Telephone: 61 2 9250 4449
                                     Facsimile: 61 2 9251 3371





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 6
<PAGE>   62

Commitments                          J.P. MORGAN AUSTRALIA LIMITED (ACN 004 384
- -----------                          687), as an Australian Lender             
                                     
$25,000,000

SIGNED on behalf of              )
J.P. MORGAN AUSTRALIA LIMITED    )
by its attorney in the           )
presence of:                     )   /s/ J.P. MORGAN AUSTRALIA LIMITED 
                                     -------------------------------------------
                                     Attorney

                                                                                
- ---------------------------------    -------------------------------------------
Witness                              Print Name

                                 
- ---------------------------------
Print Name

                                     Address:   Level 25
                                                333 Collins Street
                                                Melbourne Vic. 3000

                                     Attention: Mr. Mitchell Stack

                                     Telephone: 61 3 9623 8395
                                     Facsimile: 61 3 9623 8353





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 7
<PAGE>   63

$20,000,000                          THE FIRST NATIONAL BANK OF CHICAGO,
                                     AUSTRALIAN BRANCH, (ARBN 065 752 918), as
                                     an Australian Lender

SIGNED on behalf of              )
THE FIRST NATIONAL BANK          )
OF CHICAGO                       )
by its attorney in the           )   /s/ THE FIRST NATIONAL BANK OF CHICAGO,
presence of:                     )       AUSTRALIAN BRANCH
                                     -------------------------------------------
                                     Attorney

                                        W. Walter Green, III,                   
- ---------------------------------    -------------------------------------------
Witness                              Print Name

 Francis R. Bradley, III         
- ---------------------------------
Print Name

                                     Address:   Level 4
                                                70 Hindmarsh Square
                                                Adelaide S.A. 5000

                                     Attention: Mr. Clinton Sampson

                                     Telephone: 61 8 8228 2222
                                     Facsimile: 61 8 8223 2948





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 8
<PAGE>   64

$30,000,000                          THE CHASE MANHATTAN BANK (ARBN 074 112
                                     011), as an Australian Lender

SIGNED on behalf of              )
THE CHASE MANHATTAN BANK         )
by its attorney in the           )
presence of:                     )   /s/ THE CHASE MANHATTAN BANK 
                                     -------------------------------------------
                                     Attorney

                                      Lori Vetters                              
- ---------------------------------    -------------------------------------------
Witness                              Print Name

 Christopher Click               
- ---------------------------------
Print Name

                                     Address:   Level 35, AAP Centre
                                                259 George Street
                                                Sydney NSW 2000

                                     Attention: Mr. Michael Klemme

                                     Telephone: 61 2 9250 4023
                                     Facsimile: 61 2 9251 3371





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 9
<PAGE>   65
$25,000,000                          BANK OF AMERICA NATIONAL TRUST AND SAVINGS
                                     ASSOCIATION (ARBN 064 874 531), SYDNEY
                                     BRANCH, as an Australian Lender


                             By:  /s/ BANK OF AMERICA NATIONAL TRUST AND SAVINGS
                                      ASSOCIATION 
                                  --------------------------------------
                             Name:   J. Stephen Mernick
                             Title:  Senior Vice President

                             Address:    18th Floor
                                         135 King Street
                                         Sydney NSW 2000

                             Attention:  Doriano Meta
                          
                             Telephone:  61 2 9931 4210
                             Facsimile:  61 2 9221 1023





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 10
<PAGE>   66
$25,000,000                          CITIBANK, N.A. (ARBN 072 814 058), as an
                                     Australian Lender


                                     By:  /s/ CITIBANK, N.A.                   
                                          --------------------------------------
                                     Name:
                                     Title:


                                     Address:    Level 26
                                                 101 Collins Street
                                                 Melbourne Vic. 3000

                                     Attention:  Mr. Dougal Thomson

                                     Telephone:  61 3 9653 7333
                                     Facsimile:  61 3 9653 7301





               
- ---------------
$125,000,000

AGGREGATE
COMMITMENT





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 11

<PAGE>   1
                                                                    EXHIBIT 10.4



                                October 31, 1996



To each of the Parties Listed
on attached Schedule I


       Re:    Apache Corporation Global Credit Facility Indemnity Agreement

Ladies and Gentlemen:

       Reference is hereby made to (i) that certain Intercreditor Agreement of
even date herewith, in the form attached hereto as Exhibit "A" unless the
parties hereto otherwise agree (the "Intercreditor Agreement"), among the
various commercial lending institutions (the "U.S. Lenders") as are or may
become parties to that certain Fourth Amended and Restated Credit Agreement of
even date herewith among the U.S. Borrower (as herein defined), the U.S.
Lenders, the Global Administrative Agent (as herein defined), the U.S. Co-Agent
(as herein defined) and the Arrangers therein named (the "Arrangers") (as it
may be amended, supplemented, restated or otherwise modified and in effect from
time to time, the "U.S. Credit Agreement"), the various commercial lending
institutions (the "Australian Lenders") as are or may become parties to that
certain Credit Agreement of even date herewith among the Australian Borrower
(as herein defined), the Australian Lenders, the Global Administrative Agent,
the Australian Administrative Agent (as herein defined) and the Arrangers (as
it may be amended, supplemented, restated or otherwise modified and in effect
from time to time, the "Australian Credit Agreement"), the various commercial
lending institutions (the "Canadian Lenders", and together with the U.S.
Lenders and the Australian Lenders, the "Lenders") as are or may become parties
to that certain Credit Agreement of even date herewith among the Canadian
Borrower (as herein defined), the Canadian Lenders, the Global Administrative
Agent, the Canadian Administrative Agent (as herein defined) and the Arrangers
(as it may be amended, supplemented, restated or otherwise modified and in
effect from time to time, the "Canadian Credit Agreement"), The First National
Bank of Chicago, as Global Administrative Agent (the "Global Administrative
Agent"), The Chase Manhattan Bank, as Co-Agent under the U.S. Credit Agreement
(the "U.S. Co-Agent"), Chase Securities Australia Limited (ACN 002 888 011), as
the Administrative Agent for the Australian Lenders (the "Australian
Administrative Agent"), Bank of Montreal, as the Administrative Agent for the
Canadian Lenders (the "Canadian Administrative Agent" and together with the
Global Administrative Agent and the Australian Administrative Agent, the
"Administrative Agents"), First Chicago Capital Markets, Inc., as Arranger, and
Chase Securities Inc., as Arranger; (ii) that certain Fourth Amended and
Restated Credit Agreement of even date herewith among Apache Corporation (the
"U.S.  Borrower"), the U.S. Lenders, the Global Administrative Agent, the U.S.
Co-Agent and the Arrangers; (iii) that certain Credit Agreement of even date
herewith among Apache Energy Limited (ACN 009 301
<PAGE>   2
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 2



964) and Apache Oil Australia Pty. Limited (ACN 050 611 688) (collectively, the
"Australian Borrower"), the Australian Lenders, the Global Administrative
Agent, the Australian Administrative Agent and the Arrangers; (iv) that certain
Credit Agreement of even date herewith among Apache Canada Ltd. (the "Canadian
Borrower", and together with the U.S. Borrower and the Australian Borrower, the
"Borrowers"), the Canadian Lenders, the Global Administrative Agent, the
Canadian Administrative Agent and the Arrangers, as each may be amended,
supplemented, restated or otherwise modified and in effect from time to time.
Capitalized terms not otherwise defined herein shall have the meanings assigned
to such terms in the Intercreditor Agreement.

       The U.S. Borrower consents to the terms and provisions of this letter
agreement (this "Indemnity Agreement") and the Intercreditor Agreement,
including, without limitation, the terms and provisions regarding the
disclosure of information, the sharing of payments, and the purchase and sale
of participations in the Credit Agreements, consents to all actions required of
any Administrative Agent or Lender pursuant to the terms and conditions of the
Intercreditor Agreement, and agrees to take all actions necessary to give
effect to the terms and provisions of this Indemnity Agreement and the
Intercreditor Agreement.  The U.S. Borrower agrees that any amounts which are
paid (or received by way of setoff, combination of accounts or similar
arrangements) to cure any Debt Limit Excession shall be made by the U.S.
Borrower to the U.S. Lenders, by the Australian Borrower to the Australian
Lenders and by the Canadian Borrower to the Canadian Lenders in accordance with
their respective Sharing Percentages as determined by the Administrative Agents
in accordance with the terms of the Intercreditor Agreement.  It is the
intention of the parties hereto that, except as otherwise set forth in this
Indemnity Agreement, under no circumstances will any Borrower be required to
pay any principal amount under the Global Loan Documents in excess of
outstanding Obligations with respect to its Credit Agreement and any guaranty
executed by the Borrower plus any interest, fees and other amounts as set forth
in this Indemnity Letter and any other Global Loan Document.

       If after any amount is paid under Section 3.3(c) of the Intercreditor
Agreement a Borrower or any trustee, liquidator, receiver or receiver-manager
or Person with analogous powers  (collectively the "Reimbursed Borrower")
recovers any amount from any Lenders ("Disgorging Lenders") in respect of any
amount theretofore used to reduce outstanding Obligations under any Credit
Agreement or to purchase or repurchase participation interests from the other
Lenders, then the amount so recovered (including any interest paid by the
Lenders) shall be treated for all purposes: (i) as between the relevant
Reimbursed Borrower and the Disgorging Lenders, and (ii) as between the
Disgorging Lenders and the other Lenders (the "Non-Disgorging Lenders"), to be
outstanding as U.S. Credit Outstandings, Canadian Credit
<PAGE>   3
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 3



Outstandings or Australian Credit Outstandings, as applicable, in which case
the Reallocable Payment Proportions shall thereupon be adjusted and,
notwithstanding the fact that no reallocable payment is received, Section
3.3(c) of the Intercreditor Agreement again applied in order that the
Reallocable Payment Proportions equal the applicable Target Sharing
Percentages.

       To the extent the application of the provisions of this Indemnity
Agreement or the Intercreditor Agreement give rise to any liability for any tax
payments (other than income tax and franchise tax payments) in connection with
any payments made by the U.S. Borrower, the Australian Borrower, the Canadian
Borrower, any Administrative Agent, the Co-Agent, any Arranger, or any Lender
or any other party to any Credit Agreement, then (notwithstanding any
provisions to the contrary set forth in the Credit Agreements), the U.S.
Borrower agrees that the Borrowers, including the U.S. Borrower, jointly and
severally, shall indemnify each Lender, Administrative Agent, Co-Agent and
Arranger (the "Loan Parties") and shall hold each Loan Party free and harmless
from and against any such liability; provided, however, that each Loan Party
(if so requested by a Borrower under a Credit Agreement through the appropriate
Administrative Agent) will use good faith efforts to accommodate any reasonable
request by such Borrower in order to avoid the need for, or reduce the amount
of, such compensation so long as the request will not, in the sole opinion of
the applicable Loan Party, be disadvantageous to such Loan Party.

       The U.S. Borrower agree to reimburse each Loan Party for any reasonable
costs and out-of-pocket expenses (including fees and expenses of consultants
and attorneys' fees (on a solicitor and his own client basis with respect to
the Canadian Loan Documents) for such Loan Party) paid or incurred by such Loan
Party in connection with the preparation, review, execution, delivery,
amendment, modification and administration of the Global Loan Documents,
including, without limitation, this Indemnity Agreement and the Intercreditor
Agreement.  The U.S.  Borrower agrees to reimburse each Loan Party for any
reasonable costs and out-of-pocket expenses (including attorneys' fees (on a
solicitor and his own client basis with respect to the Canadian Loan Documents)
for the Loan Parties) paid or incurred by any Loan Party in connection with the
collection and enforcement of the Global Loan Documents, including this
Indemnity Agreement and the Intercreditor Agreement.

       The U.S. Borrower hereby indemnifies, exonerates and holds each Loan
Party, and their respective directors, agents, officers and employees
("Indemnified Persons") free and harmless from and against any and all losses,
claims, damages, penalties, judgments, liabilities, actions, suits, costs and
expenses (including, without limitation, all expenses of litigation or
preparation therefor whether or not any Loan Party or any Indemnified Person is
a party thereto and all
<PAGE>   4
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 4



other attorneys' fees (on a solicitor and his own client basis with respect to
the Canadian Loan Documents) and disbursements) ("Claims") which any of them
may pay or incur as a result of, arising out of, or relating to, this Indemnity
Agreement, the Intercreditor Agreement, the other Global Loan Documents or the
transactions contemplated hereby or thereby (the "Indemnified Liabilities"),
except to the extent that a final order of a court of competent jurisdiction
finds that such Indemnified Liability arises solely from such Indemnified
Person's gross negligence or wilful misconduct.  If and to the extent that the
foregoing undertaking may be unenforceable for any reason, the U.S. Borrower
hereby agrees to make the maximum contribution to the payment and satisfaction
of each of the Indemnified Liabilities which is permissible under applicable
law.  The U.S.  Borrower shall be obligated to indemnify the Indemnified
Persons for all Claims regardless of whether the U.S. Borrower had knowledge of
the facts and circumstances giving rise to such Claims.

       Nothing contained in this agreement shall be construed in a manner which
would deem any party to this Indemnity Agreement, the Intercreditor Agreement
or any other Global Loan Document (under state law or for tax purposes) to be
acting in partnership with any other party.  The obligations of the U.S.
Borrower under this Indemnity Agreement and the Intercreditor Agreement shall
survive the termination of this Indemnity Agreement, the Intercreditor
Agreement or any other Global Loan Document or any non-assumption of this
Indemnity Agreement, the Intercreditor Agreement or any other Global Loan
Document in a bankruptcy or similar proceeding.

       This Indemnity Agreement may be executed in any number of counterparts
and by different parties on separate counterparts, and all such counterparts
shall together constitute but one and the same agreement.
<PAGE>   5
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 5




       THIS INDEMNITY AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH THE
INTERNAL LAWS (AND NOT THE LAW OF CONFLICTS) OF THE STATE OF ILLINOIS, BUT
GIVING EFFECT TO FEDERAL LAWS APPLICABLE TO NATIONAL BANKS.  This Indemnity
Agreement constitutes the entire understanding of the parties hereto with the
U.S. Borrower with respect to the Intercreditor Agreement and this Indemnity
Agreement and supersedes any prior agreements, written or oral, with respect
thereto.


                                           Very truly yours,

                                           Apache Corporation, as U.S. Borrower


                                           By: /s/ Apache Corporation 
                                              --------------------------------
                                           Name:  Matthew W. Dundrea
                                           Title: Treasurer
<PAGE>   6
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 6




AGREED AND CONSENTED TO BY:


THE FIRST NATIONAL BANK OF CHICAGO,
as Global Administrative Agent and on behalf of
the U.S. Lenders under the U.S. Credit Agreement


By: /s/ THE FIRST NATIONAL BANK OF CHICAGO   
   ---------------------------------------
Name:  W. Walter Green
Title: Attorney-in-fact for
       The First National Bank of Chicago
<PAGE>   7
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 7




AGREED AND CONSENTED TO BY:


THE CHASE MANHATTAN BANK, as U.S. Co-Agent


By: /s/ THE CHASE MANHATTAN BANK      
   -----------------------------------
Name:
Title:
<PAGE>   8
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 8




AGREED AND CONSENTED TO BY:


CHASE SECURITIES AUSTRALIA LIMITED (ACN 002 888 011), as
 Australian Administrative Agent and on behalf of 
 the Australian Lenders under the Australian Credit Agreement


SIGNED on behalf of         )
CHASE SECURITIES            )
AUSTRALIA LIMITED           )
by its attorney in the      )
presence of:                )           /s/ CHASE SECURITIES AUSTRALIA LIMITED 
                                        --------------------------------------
                                        Attorney

                                         Lori Vetters                           
- ------------------------------          -----------------------------------
Witness                                 Print Name

 Christopher Click            
- ------------------------------
Print Name
<PAGE>   9
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 9




AGREED AND CONSENTED TO BY:


BANK OF MONTREAL, as Canadian
 Administrative Agent and on behalf of
 the Canadian Lenders under the Canadian Credit Agreement


By: /s/ BANK OF MONTREAL      
   -----------------------------------
Name:
Title:
<PAGE>   10
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 10




AGREED AND CONSENTED TO BY:


FIRST CHICAGO CAPITAL MARKETS,
 INC., as Arranger


By: /s/ FIRST CHICAGO CAPITAL MARKETS, INC.
    ---------------------------------------
Name:
Title:
<PAGE>   11
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 11




AGREED AND CONSENTED TO BY:


CHASE SECURITIES INC., as Arranger


By: /s/ CHASE SECURITIES INC.      
   -----------------------------------
Name:  Tod Benton
Title: Managing Director
<PAGE>   12
                                   SCHEDULE I


The First National Bank of Chicago,
  as Global Administrative Agent

The Chase Manhattan Bank, as U.S. Co-Agent

Chase Securities Australia Limited, as
 Australian Administrative Agent

Bank of Montreal, as Canadian
 Administrative Agent

First Chicago Capital Markets, Inc., as Arranger

Chase Securities Inc., as Arranger

The U.S. Lenders party to the Fourth Amended
 and Restated Credit Agreement

The Australian Lenders party to the Australian Credit Agreement

The Canadian Lenders party to the Canadian Credit Agreement

c/o The First National Bank of Chicago
One First National Plaza
Chicago, Illinois  60670
<PAGE>   13



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



                            INTERCREDITOR AGREEMENT

                                     among

   THE LENDERS UNDER THE U.S. CREDIT AGREEMENT, THE CANADIAN CREDIT AGREEMENT
                      AND THE AUSTRALIAN CREDIT AGREEMENT,

                      THE FIRST NATIONAL BANK OF CHICAGO,
                        as Global Administrative Agent,

                           THE CHASE MANHATTAN BANK,
                  as Co-Agent under the U.S. Credit Agreement,

                      CHASE SECURITIES AUSTRALIA LIMITED,
                      as Australian Administrative Agent,

                               BANK OF MONTREAL,
                       as Canadian Administrative Agent,

                      FIRST CHICAGO CAPITAL MARKETS, INC.,
                                  as Arranger,

                                      and

                             CHASE SECURITIES INC.,
                                  as Arranger


                          Dated as of October 31, 1996



================================================================================
<PAGE>   14
                            INTERCREDITOR AGREEMENT


       THIS INTERCREDITOR AGREEMENT, dated as of October 31, 1996, is among the
various commercial lending institutions (the "U.S. Lenders") as are or may
become parties to the U.S. Credit Agreement (as herein defined), the various
commercial lending institutions (the "Canadian Lenders") as are or may become
parties to the Canadian Credit Agreement (as herein defined), the various
commercial lending institutions (the "Australian Lenders") as are or may become
parties to the Australian Credit Agreement (as herein defined), THE FIRST
NATIONAL BANK OF CHICAGO, as Global Administrative Agent (the "Global
Administrative Agent"), THE CHASE MANHATTAN BANK, as Co-Agent under the U.S.
Credit Agreement (the "U.S. Co-Agent"), CHASE SECURITIES AUSTRALIA LIMITED (ACN
002 888 011), as the Australian Administrative Agent for the Australian Lenders
(the "Australian Administrative Agent"), BANK OF MONTREAL, as the Canadian
Administrative Agent for the Canadian Lenders (the "Canadian Administrative
Agent" and together with the Global Administrative Agent and the Australian
Administrative Agent, the "Administrative Agents"), FIRST CHICAGO CAPITAL
MARKETS, INC., as Arranger, and CHASE SECURITIES INC., as Arranger.


                                    RECITALS

       A.     The U.S Lenders, the Canadian Lenders and the Australian Lenders
agree that the Lenders (as herein defined) will rank pari passu with one
another with respect to certain payments or recoveries and that certain matters
relating to the administration of the U.S. Credit Agreement, the Canadian
Credit Agreement or the Australian Credit Agreement (together, the "Credit
Agreements") will be made based upon the Combined Commitments (as herein
defined) of the Lenders.

       B.     The pari passu sharing described above will be achieved in
certain circumstances by requiring the U.S. Lenders, the Canadian Lenders or
the Australian Lenders to purchase from the other Lenders participations in the
Loans advanced under the other Credit Agreements.

       The parties hereto agree as follows:

                                   ARTICLE 1

                     DEFINITIONS AND TERMS OF CONSTRUCTION

       1.1    Certain Definitions.  When used herein, and unless otherwise
defined herein, terms and expressions defined in the U.S. Credit Agreement
shall have those meanings unless they are also defined in a different manner in
either the Australian Credit Agreement or the Canadian Credit Agreement (other
than any difference arising solely from conforming changes,
<PAGE>   15
such as the substitution of "Parent" for "Company"), in which case the
respective definitions set forth in the respective Credit Agreements shall
apply in relation to that Credit Agreement as required by the context; terms
defined in only one of the Credit Agreements shall have the meanings specified
in such Credit Agreement; and the following additional terms (whether or not
underscored) when used in this Intercreditor Agreement, including its preamble
and recitals, shall, except as otherwise set forth in this Section or where the
context otherwise requires, have the following meanings (such meanings to be
equally applicable to the singular and plural forms thereof):

       "Acceleration" means either (i) the termination of the Aggregate
Commitments under a Credit Agreement by reason of its stated maturity date or
(ii) the acceleration (after the occurrence of a Default) of the due date for
payment of the Obligations under a Credit Agreement automatically or by reason
of a declaration or demand.

       "Administrative Agents" has the meaning set forth in the preamble
hereto.

       "Agreement" means this Intercreditor Agreement, as it may be amended,
supplemented, restated or otherwise modified and in effect from time to time.

       "Apache Energy Limited" means Apache Energy Limited, a corporation
organized under the laws of the State of Western Australia, Australia.

       "Apache Oil Australia" means Apache Oil Australia Pty. Limited, a
corporation organized under the laws of the State of New South Wales,
Australia.

       "Arrangers" has the meaning set forth in the U. S. Credit Agreement.

       "Australian Administrative Agent" has the meaning set forth in the
preamble hereto.

       "Australian Borrowers" means Apache Energy Limited and Apache Oil
Australia.

       "Australian Commitments" has the meaning of the term "Aggregate
Commitment" as defined in the Australian Credit Agreement.

       "Australian Credit Agreement" means that certain Credit Agreement of
even date herewith among the Australian Borrowers, the Australian Lenders, the
Global Administrative Agent, the Australian Administrative Agent and the
Arrangers, as it may be amended, supplemented, restated or otherwise modified
(as permitted hereunder) and in effect from time to time.

       "Australian Credit Outstandings" means, in respect of any Australian
Lender, as at any date of determination thereof, the aggregate principal amount
of Loans outstanding from such Australian Lender under the Australian Credit
Agreement plus the aggregate amount of such





                                       2
<PAGE>   16
Lender's Commitment Percentage (under the Australian Credit Agreement) of any
other liabilities, obligations or indebtedness, including, without limitation,
accrued but unpaid interest and fees, of the Australian Borrowers or any other
party to the Australian Loan Documents (other than any Lender or Agent) under
the Australian Loan Documents.

       "Australian Lenders" has the meaning set forth in the preamble hereto.

       "Australian Loan Documents" has the meaning of the term "Loan Documents"
as defined in the Australian Credit Agreement.

       "Borrower" means the U.S. Borrower, the Canadian Borrower or the
Australian Borrowers.

       "Canadian Borrower" means Apache Canada Ltd., a corporation organized
under the laws of the Province of Alberta, Canada.

       "Canadian Commitments" has the meaning of the term "Aggregate
Commitment" as defined in the Canadian Credit Agreement.

       "Canadian Credit Agreement" means that certain Credit Agreement of even
date herewith among the Canadian Borrower, the Canadian Lenders, the Global
Administrative Agent, the Canadian Administrative Agent and the Arrangers, as
it may be amended, supplemented, restated or otherwise modified (as permitted
hereunder) and in effect from time to time.

       "Canadian Credit Outstandings" means, in respect of any Canadian Lender,
as at any date of determination thereof, the aggregate principal amount of
Loans outstanding from such Canadian Lender under the Canadian Credit Agreement
plus the aggregate amount of such Lender's Commitment Percentage (under the
Canadian Credit Agreement) of any other liabilities, obligations or
indebtedness, including, without limitation, accrued but unpaid interest and
fees, of the Canadian Borrower or any other party to the Canadian Loan
Documents (other than any Lender or Agent) under the Canadian Loan Documents.

       "Canadian Lenders" has the meaning set forth in the preamble hereto.

       "Canadian Loan Documents" has the meaning of the term "Loan Documents"
as defined in the Canadian Credit Agreement.

       "Co-Agent" has the meaning set forth in the preamble hereto.

       "Combined Commitments" means, at any time, the aggregate of the U.S.
Commitments, the Canadian Commitments and the Australian Commitments at such
time.





                                       3
<PAGE>   17
       "Combined Outstandings" means the aggregate of all U.S. Credit
Outstandings, Canadian Credit Outstandings and all Australian Credit
Outstandings.

       "Combined Required Lenders" means, at any time, Lenders having greater
than 66-2/3% of the aggregate amount of the Combined Commitments at such time.

       "Combined Super Majority Lenders" means, at any time, Lenders having 75%
of the aggregate amount of the Combined Commitments at such time.

       "Commitment Percentage" means, as to any Lender under any Credit
Agreement, the percentage equivalent of a fraction the numerator of which is
the amount of such Lender's Commitment under such Credit Agreement and the
denominator of which is the aggregate amount of the Commitments of all Lenders
under such Credit Agreement.

       "Credit Agreements" means the U.S. Credit Agreement, the Canadian Credit
Agreement and the Australian Credit Agreement.

       "Debt Limit Excession" has the meaning of the term "Debt Limit
Excession" as defined in the U.S. Credit Agreement.

       "Default" means a Default or Unmatured Default under (and as defined in)
any of the Credit Agreements.

       "Downgrade Condition" has the meaning of the term "Downgrade Condition"
as defined in the U.S. Credit Agreement.

       "Enforcing Party" has the meaning ascribed thereto in Section 2.6.

       "Global Administrative Agent" has the meaning set forth in the preamble
hereto.

       "Guaranty" means any "Guaranty" (as defined in any Credit Agreement)
delivered pursuant to such Credit Agreement, in each case as such guaranty may
from time to time be amended, supplemented, restated, reaffirmed or otherwise
modified.

       "Lenders" means the U.S. Lenders, the Canadian Lenders and the
Australian Lenders.

       "Loan Documents" means the Australian Loan Documents, the Canadian Loan
Documents and the U.S. Loan Documents.

       "Reallocable Payment" means any amount received by a Lender, after the
applicable Sharing Date, in respect of a Credit Agreement by virtue of any
payment or prepayment made by or for the account of a Borrower (including for
greater certainty any payment made under





                                       4
<PAGE>   18
a Guaranty of such Borrower's obligations and all amounts realized from the
exercise of any foreclosure or similar rights) or by virtue of an exercise of
any right of Set-Off.

       "Reallocable Payment Proportion" means, at any time:

       (a)    for the U.S. Lenders, a percentage determined by dividing:

              i.     the aggregate of the U.S. Credit Outstandings at such time
                     plus any amounts paid by the applicable U.S. Lenders
                     pursuant to Section 3.3(c) plus any amounts distributed by
                     the applicable U.S. Lenders to any Canadian Lenders or
                     Australian Lenders as holders of participation interests
                     in the U.S. Credit Outstandings to such time less any
                     amounts received by the applicable U.S. Lenders pursuant
                     to Section 3.3(c) less any amounts received by the
                     applicable U.S. Lenders from either Canadian Lenders or
                     Australian Lenders by virtue of the applicable U.S.
                     Lenders' holding participation interests in either the
                     Canadian Credit Outstandings or the Australian Credit
                     Outstandings to such time, by

              ii.    the Combined Outstandings at such time;

       (b)    for the Canadian Lenders, a percentage obtained by dividing:

              i.     the aggregate of the Canadian Credit Outstandings at such
                     time plus any amounts paid by the applicable Canadian
                     Lenders pursuant to Section 3.3(c) plus any amounts
                     distributed by the applicable Canadian Lenders to any U.S.
                     Lenders or Australian Lenders as holders of participation
                     interests in the Canadian Credit Outstandings to such time
                     less any amounts received by the applicable Canadian
                     Lenders pursuant to Section 3.3(c) less any amounts
                     received by the applicable Canadian Lenders from either
                     U.S. Lenders or Australian Lenders by virtue of the
                     applicable Canadian Lenders' holding participation
                     interests in either the U.S. Credit Outstandings or the
                     Australian Credit Outstandings to such time, by

              ii.    the Combined Outstandings at such time; and

       (c)    for the Australian Lenders, a percentage determined by dividing:

              i.     the aggregate of the Australian Credit Outstandings at
                     such time plus any amounts paid by the applicable
                     Australian Lenders pursuant to Section 3.3(c) plus any
                     amounts distributed by the applicable Australian Lenders
                     to any U.S. Lenders or Canadian Lenders as holders of
                     participation interests in the Australian Credit
                     Outstandings to such time less any





                                       5
<PAGE>   19
                     amounts received by the applicable Australian Lenders
                     pursuant to Section 3.3(c) less any amounts received by
                     the applicable Australian Lenders from either U.S. Lenders
                     or Canadian Lenders by virtue of the applicable Australian
                     Lenders' holding participation interests in either the
                     U.S. Credit Outstandings or the Canadian Credit
                     Outstandings to such time, by

              ii.    the Combined Outstandings at such time.

       "Set-Off" means the exercise of any right of set-off, combination of
accounts, bankers' liens or similar mechanisms.

       "Sharing Date" means, as applicable from time to time, the first to
occur of (i) the date on which any Acceleration has occurred or (ii) the date
on which any Default arising under Section 12.2 of any of the Credit Agreements
has occurred.

       "Sharing Percentage" means, at any time:

       (a)    for the U.S. Lenders, the percentage determined by dividing the
              U.S. Credit Outstandings by the Combined Outstandings at such
              time; and

       (b)    for the Canadian Lenders, the percentage determined by dividing
              the Canadian Credit Outstandings by the Combined Outstandings at
              such time; and

       (c)    for the Australian Lenders, the percentage determined by dividing
              the Australian Credit Outstandings by the Combined Outstandings
              at such time.

       "Target Sharing Percentages" means the Sharing Percentages of the U.S.
Lenders, the Canadian Lenders and the Australian Lenders determined as of the
applicable Sharing Date.  After a Sharing Date, Target Sharing Percentages of
the Lenders shall be recalculated as of each January 1, April 1, June 1 and
September 1 using the Combined Outstandings as of the applicable Sharing Date.

       "U.S. Borrower" means Apache Corporation, a corporation organized under
the laws of the State of Delaware.

       "U.S. Commitments" has the meaning of the term "Aggregate Commitment" as
defined in the U.S. Credit Agreement.

       "U.S. Credit Agreement" means that certain Fourth Amended and Restated
Credit Agreement of even date herewith among the U.S. Borrower, the U.S.
Lenders, the Global Administrative Agent, the Co-Agent and the Arrangers, as it
may be amended, supplemented, restated or otherwise modified (as permitted
hereunder) and in effect from time to time.





                                       6
<PAGE>   20
       "U.S. Credit Outstandings" means, in respect of any U.S. Lender, as at
any date of determination thereof, the aggregate principal amount of Loans
outstanding from such U.S. Lender under the U.S. Credit Agreement plus the
aggregate amount of such Lender's Commitment Percentage (under the U.S. Credit
Agreement) of any other liabilities, obligations or indebtedness, including,
without limitation, accrued but unpaid interest and fees, of the applicable
Borrower or any other party to the U.S. Loan Documents (other than any Lender
or Agent) under the U.S. Loan Documents.

       "U.S. Lenders" has the meaning set forth in the preamble hereto.

       "U.S. Loan Documents" has the meaning of the term "Loan Documents" as
defined in the U.S. Credit Agreement.

       1.2    Headings.  Article and section headings of this Agreement are for
convenience of reference only, and shall not govern the interpretation of any
of the provisions of this Agreement.

       1.3    Agreement References.  The term "this Agreement," "hereof,"
"hereunder" and similar expressions refer to this Agreement and not to any
particular Article, Section or other portion hereof and include any amendments
or supplements hereto.  Unless otherwise stated, references herein to
"Sections" are to Sections of this Agreement.

       1.4    Accounting and Financial Determination.  Unless otherwise
specified, all accounting terms used herein shall be interpreted, all
accounting determinations and computations hereunder, and all financial
statements required to be delivered hereunder, shall be prepared in accordance
with, the Agreement Accounting Principles.


                                   ARTICLE 2

                          CO-OPERATIVE ADMINISTRATION

       2.1    Combined Voting.  Notwithstanding anything to the contrary
provided in the  Australian Credit Agreement, Canadian Credit Agreement or the
U.S. Credit Agreement:

       (a)    no decision, determination, instruction, action, consent, waiver
              or amendment under any of the Credit Agreements which, by the
              terms of the applicable Credit Agreement, requires approval,
              agreement or consent by or from the "Required Lenders" (as such
              expression is used in the respective Credit Agreement), and no
              amendment of such requirement for such approval, agreement or
              consent by or from such "Required Lenders," shall be made, taken,
              implemented, given or effective unless, in addition to the
              required approval, agreement or consent by or





                                       7
<PAGE>   21
              from the Required Lenders under the applicable Credit Agreement,
              the same shall have been approved, agreed or consented to by the
              Combined Required Lenders;

       (b)    no decision, determination, instruction, action, consent, waiver
              or amendment under any of the Credit Agreements which, by the
              terms of such Credit Agreement, requires approval, agreement or
              consent by or from all Lenders under such Credit Agreement shall
              be made, taken, implemented, given or effective unless, in
              addition to the required approval, agreement or consent by or
              from all Lenders under the applicable Credit Agreement, the same
              shall have been approved, agreed or consented to by the Combined
              Super Majority Lenders.

       2.2    Notices and Communications.  The Administrative Agents shall
without request, to the extent not delivered by the relevant Borrower, promptly
provide to each other, for distribution to the Lenders under the applicable
Credit Agreement, (i) copies of any material notices or other communications
received from a Borrower and material information received or determinations
made by any Borrower; (ii) each determination of the Global Borrowing Base;
(iii) any notice or other information concerning a redetermination or reduction
of Commitments under a Credit Agreement; (iv) any notice or other information
concerning a Debt Limit Excession or a Downgrade Condition; (v) all financial
statements or other reports provided by any of the Borrowers; (vi) each
Approved Engineers' Report or Company's Engineers' Report; (vii) each
certificate delivered pursuant to Sections 9.1(a), (c) and (k) of any of the
Credit Agreements; (viii) each notice delivered pursuant to Section 9.3 of any
of the Credit Agreements; (ix) all calculations or material furnished by a
Borrower or prepared by an Administrative Agent with respect to covenants
contained in a Credit Agreement; (x) all payments received in respect of any of
the Combined Obligations following a Default; and (xi) such other information
in the possession of such Administrative Agent (including engineering,
financial and non-financial information) as any of the Administrative Agents
may from time to time reasonably request; provided that such Administrative
Agent shall have no liability to the other Administrative Agents or any Lenders
for the failure to deliver such information unless such failure is the result
of the gross negligence or willful misconduct of such Administrative Agent.

       2.3    Notice Requirements.  Without restricting the obligations of the
Administrative Agents under Section 2.2, each Administrative Agent agrees with
the other Administrative Agents that it will:

       (a)    concurrently with the delivery thereof by it to a Borrower,
              deliver to the other Administrative Agents a copy of any written
              notice of any Default;

       (b)    promptly after receipt thereof, deliver to the other
              Administrative Agents a copy of any notice or other information
              concerning a Debt Limit Excession or Downgrade Condition;





                                       8
<PAGE>   22
       (c)    promptly after receipt thereof from a Borrower, deliver to the
              other Administrative Agents a copy of any written notice received
              from a Borrower under Section 9.3 of its Credit Agreement;

       (d)    deliver to the other Administrative Agents prompt written notice
              of any declaration of Acceleration or determination that
              Acceleration has occurred under its Credit Agreement or that all
              or any portion of the Commitments under its Credit Agreement are
              terminated;

       (e)    deliver to the other Administrative Agents prompt written notice
              of the commencement of any legal actions or proceedings taken by
              or on behalf of it against a Borrower by reason of or arising out
              of any Default; and

       (f)    in the case of the U.S. Agent, deliver to the Canadian Agent and
              the Australian Agent prompt written notice of any determination
              or redetermination of the Global Borrowing Base (if any) under
              the U.S. Credit Agreement.

       2.4    Permitted Action by the Lenders.  Notwithstanding any other
provision of this Agreement, any Administrative Agent or (subject to the terms
of the relevant Credit Agreement) any Lender may, without instruction from the
Administrative Agent or Lenders under the other Credit Agreements (but in no
event shall be required to), take action permitted by applicable law to
preserve its rights, including, but not limited, to curing any default or
alleged default under any contract entered into by the relevant Borrower, and
paying any tax, fee or expense on behalf of the relevant Borrower.

       2.5    Co-operation.  Each Administrative Agent (and, where applicable,
the Lenders under the respective Credit Agreements) agrees with the other
Administrative Agents (and, where applicable, the Lenders under the other
Credit Agreements) that:

       (a)    to the extent available, it will from time to time promptly
              provide such information in its possession to the other
              Administrative Agents as may be reasonably necessary to enable
              the other Administrative Agents to make any calculation referred
              to in or necessary to implement Article 3 hereof or otherwise
              reasonably required by the other Administrative Agents for any
              other purpose hereof;

       (b)    to the extent reasonably possible and provided that an
              Administrative Agent shall not be required to breach any
              confidentiality agreement to which it is party or any applicable
              law, it will from time to time consult with the other
              Administrative Agents in good faith regarding the enforcement of
              its and each of the Lenders' rights and remedies under its Credit
              Agreement with a view to recovering amounts due under the Credit
              Agreements in an effective and cost-efficient manner;





                                       9
<PAGE>   23
       (c)    if, after a Default, it gains access to a Borrower's property,
              assets, financial information or data bases pursuant to the
              exercise of its secured rights, it will provide reasonable access
              to the other Administrative Agents to the extent it may legally
              do so; and

       (d)    each Lender will promptly notify the Administrative Agent under
              the Credit Agreement to which it is a party in writing of the
              receipt by such Lender of any Reallocable Payment and the
              applicable Administrative Agent will promptly notify the other
              Administrative Agents of such receipt.

       2.6    Enforcement.  From and after any Acceleration, where reasonably
practicable in the circumstances and in any event prior to the seeking of the
appointment of a receiver or receiver-manager or filing a bankruptcy petition
in respect of its Borrower, the Administrative Agent or Lender proposing to do
so (the "Enforcing Party") agrees to meet via telephone with the Administrative
Agents during reasonable business hours and to consult and cooperate with the
Administrative Agents in good faith regarding the enforcement of its rights and
each of its Lenders' rights with a view to recovering amounts due under the
Credit Agreements in an efficient and cost-efficient manner.


                                   ARTICLE 3

                               PARI PASSU SHARING

       3.1    Overall Intent.  It is the intention of the Lenders that,
following the occurrence of any Debt Limit Excession or any Sharing Date, they
shall share in any payments delivered by, or any amounts resulting from Set-Off
against, the U.S. Borrower, the Canadian Borrower or the Australian Borrower to
cure such Debt Limit Excession (until the Debt Limit Excession is cured or
until a Sharing Date occurs), and after any Sharing Date in any Reallocable
Payments received, pro rata to their respective proportions of the Combined
Outstandings.  It is the further intention of the Lenders that the pari passu
sharing arrangements set forth in this Article 3 shall never require that any
Lender purchase and continue to hold participations in an aggregate amount
greater than such Lender's Aggregate Commitments under any applicable Credit
Agreements.

       3.2    Payments to Cure Debt Limit Excession.  Upon the occurrence of a
Debt Limit Excession, the Administrative Agents shall determine the Sharing
Percentages of the U.S. Lenders, the Canadian Lenders and the Australian
Lenders at such time.  The U.S. Borrower, the Canadian Borrower and the
Australian Borrower agree that any amounts which are paid to cure such Debt
Limit Excession shall be made by the U.S. Borrower to the U.S. Lenders, by the
Canadian Borrower to the Canadian Lenders and by the Australian Borrower to the
Australian Lenders in accordance with their respective Sharing Percentages as
so determined.  For purposes of this Section 3.2 and until the Debt Limit
Excession is cured or a Sharing Date





                                       10
<PAGE>   24
occurs, the Sharing Percentages of the Lenders shall be recalculated as of each
January 1, April 1, June 1 and September 1 using the Combined Outstandings at
the time of such Debt Limit Excession.  If a Sharing Date occurs after a Debt
Limit Excession, the provisions of Section 3.3 shall be applicable to any
amount received by a Lender by way of a payment or Set-Off.

       3.3    Equalization Following the Occurrence of the Sharing Date.

       (a)    As of a Sharing Date, the Target Sharing Percentages of the
              respective Lenders shall be determined.

       (b)    Upon any receipt by any Administrative Agent or any Lender of any
              Reallocable Payments (after giving effect to application of such
              receipts), the Reallocable Payment Proportions of the U.S.
              Lenders, the Canadian Lenders and the Australian Lenders shall be
              determined.

       (c)    If the Reallocable Payment Proportions of the U.S. Lenders, the
              Canadian Lenders and the Australian Lenders calculated pursuant
              to Section 3.3(b) above are not equal to their respective Target
              Sharing Percentages, then the Lenders whose Reallocable Payment
              Proportion is less than their Target Sharing Percentages shall
              first, repurchase participations previously sold by them to other
              Lenders pursuant to previous applications of this Section 3.3(c)
              (such participation interests to be allocated pro rata among the
              sellers and the purchasers in accordance with their respective
              Target Sharing Percentages) and then purchase participations in
              the U.S. Credit Outstandings, the Canadian Credit Outstandings or
              the Australian Credit Outstandings, as the case may be (such
              participation interests to be allocated pro rata among the
              sellers and the purchasers in accordance with their respective
              Target Sharing Percentages), in U.S. Dollars on a non-recourse
              basis so that, after such payment by the purchasing Lenders and
              receipt thereof by the selling Lenders, their respective
              Reallocable Payment Proportions shall equal their Target Sharing
              Percentages; provided, however, that, if after any amount is paid
              under this Section 3.3(c), a Borrower or any trustee, liquidator,
              receiver or receiver-manager or Person with analogous powers
              (collectively, the "Reimbursed Borrower") recovers any amount
              from any Lenders ("Disgorging Lenders") in respect of any amount
              theretofore used to reduce outstanding Obligations under any
              Credit Agreement or to purchase or repurchase participation
              interests from the other Lenders, then the amount so recovered
              (including any interest paid by the Lenders) shall be treated for
              all purposes:

              i.     as between the relevant Reimbursed Borrower and the
                     Disgorging Lenders; and

              ii.    as between the Disgorging Lenders and the other Lenders,





                                       11
<PAGE>   25
              to be outstanding as U.S. Credit Outstandings, Canadian Credit
              Outstandings or Australian Credit Outstandings (as applicable),
              in which case the Reallocable Payment Proportions shall thereupon
              be adjusted and, notwithstanding the fact that no Reallocable
              Payment is received, this Section 3.3(c) again applied in order
              that the Reallocable Payment Proportions equal the applicable
              Target Sharing Percentages.

       (d)    Notwithstanding anything contained in this Agreement or the
              Credit Agreements, the purchase of participations hereunder by
              any Lenders shall not constitute an acquisition by such Lenders
              of any beneficial interest in the applicable Credit Agreement or
              any amount owing thereunder but shall constitute risk sharing
              payments among the Lenders and the beneficial interest in such
              Credit Agreement and all Obligations owing under such Credit
              Agreement shall at all times remain due and payable to the
              Lenders under the applicable Credit Agreement.

       3.4    Information.  From time to time following the occurrence of an
Acceleration, each Lender shall promptly provide its Administrative Agent with
all necessary information to enable the Administrative Agent to calculate U.S.
Credit Outstandings, Canadian Credit Outstandings or Australian Credit
Outstandings, Target Sharing Percentages and Reallocable Payment Proportions of
the Lenders, including any payments received.

       3.5    Pro Rata Treatment.  The arrangements contemplated by this
Agreement shall apply notwithstanding the time of any Default or any
Acceleration under a Credit Agreement or demand under a Guaranty; the date of
advance of any funds; the date of appointment of any receiver or receiver-
manager or bankruptcy trustee or of taking any other enforcement proceedings;
the date of obtaining any judgment; any provision of applicable law or
requirement of any governmental or public body or authority, or any subdivision
thereof; any defense, claim or any right not provided under this Agreement; or
the terms of any agreement between any Lender and/or a Borrower under any other
document or instrument between or among such parties, whether or not
bankruptcy, receivership or insolvency proceedings shall at any time have been
commenced.


                                   ARTICLE 4

                               RIGHTS OF LENDERS

       4.1    Rights of Lenders.  Subject to the terms of this Agreement, each
Administrative Agent and Lender shall be entitled to:

       (a)    deal with its Borrower and with others in connection with its
              Credit Agreement, give notices to and accept notices from its
              Borrower thereunder and administer its Credit Agreement in
              accordance with the terms thereof and of applicable law;





                                       12
<PAGE>   26
       (b)    enforce the provisions of its Credit Agreement and Loan Documents
              referred to therein to which it is a party, including suing for
              enforcement of the representations, covenants and payment
              obligations therein contained, whether or not it accelerates the
              maturity of any payment obligations in accordance with the terms
              thereof and of applicable law;

       (c)    demand repayment or accelerate the maturity of any payment
              obligation under the Credit Agreement to which it is a party in
              accordance with the terms thereof and of applicable law;

       (d)    amend or otherwise modify the Credit Agreement to which it is a
              party, subject to the conditions, and in the manner, therein set
              forth, provided that the definition of "Global Borrowing Base"
              and all provisions and terms relating thereto which are set forth
              in such Credit Agreement may not be amended or otherwise modified
              without the written consent of the Combined Super Majority Banks;
              or

       (e)    consent to any plan of arrangement or plan of reorganization
              involving its Borrower under any bankruptcy or insolvency law.


                                   ARTICLE 5

                                   ASSIGNMENT

       5.1    Assignees.  No provision of this Agreement shall restrict in any
manner the assignment, participation or other transfer by a Lender of all or
part of its right, title or interest under its Credit Agreement; provided that,
unless the assignee becomes a Lender for purposes of this Agreement in
accordance with Article 17 of the Credit Agreements and agrees to comply with
the terms and provisions of this Agreement, the assigning Lender shall remain
responsible for performance of this Agreement with respect to the interest
assigned, all as more fully set forth herein.


                                   ARTICLE 6

                                 MISCELLANEOUS

       6.1    No Partnership or Joint Venture.  Nothing contained in this
Agreement, and no action taken by the Administrative Agents or the Lenders (or
any of them) pursuant hereto, is intended to constitute or shall be deemed to
constitute the Administrative Agents or the Lenders (or any of them) a
partnership, association, joint venture or other entity.





                                       13
<PAGE>   27
       6.2    Notices.  All notices, requests and other communications to any
party hereunder shall be delivered in accordance with the delivery instructions
set forth in Article 18 of the applicable Credit Agreement.

       6.3    Amendments and Waivers.  Any provision of this Agreement may be
amended or waived if, and only if, such amendment or waiver is in writing and
signed by the Combined Super Majority Lenders; provided, however, that:

       (a)    the provisions of Section 3 of this Agreement, definitions used
              in or relating to Section 3 of this Agreement and the provisions
              of this Section 6.3 may only be amended with the unanimous
              written consent of all of the Lenders;

       (b)    the provisions hereof relating to "Combined Super Majority Banks"
              may only be amended with the unanimous written consent of the
              Combined Super Majority Lenders; and

       (c)    the provisions hereof relating to the "Administrative Agents" may
              only be amended with the unanimous written consent of the
              Administrative Agents.

       6.4    Currency and Payment Matters.  All payments hereunder shall be
made in immediately available funds in United States Dollars.  All payments to
any Lender hereunder shall be made to it, to the extent practicable, in
accordance with the provisions of the relevant Credit Agreement.

       6.5    Counterparts; Effectiveness.  This Agreement may be signed in any
number of counterparts, each of which shall be an original, and all of which
taken together shall constitute a single agreement, with the same effect as if
the signatories thereto and hereto were upon the same instrument.  This
Agreement shall become effective when (i) executed by each of the parties
listed on the signature pages hereof and (ii) when all conditions precedent set
forth in Section 7.1 of each Credit Agreement are satisfied.

       6.6    Benefits.  This Agreement is solely for the benefit of and shall
be binding upon the Lenders and their successors or assigns, and neither the
Borrowers nor any other third party shall have any right, benefit, priority or
interest under or by reason of this Agreement.

       6.7    Governing Law.  THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED
IN ACCORDANCE WITH THE APPLICABLE LAWS (OTHER THAN THE CONFLICT OF LAW RULES)
OF THE STATE OF ILLINOIS AND THE UNITED STATES OF AMERICA FROM TIME TO TIME IN
EFFECT.  EACH PARTY HERETO IRREVOCABLY SUBMITS TO THE NON-EXCLUSIVE
JURISDICTION OF THE COURTS OF THE STATE OF ILLINOIS FOR PURPOSES OF ANY SUIT,
ACTION OR OTHER PROCEEDING ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT
THAT MAY BE BROUGHT OR INSTITUTED AGAINST IT.





                                       14
<PAGE>   28
       6.8    Entire Agreement.  This Agreement supersedes any conflicting
provisions in any other agreement or instruments (other than the Loan
Documents) to which any Lender or Administrative Agent is party, with respect
to the rights, duties and obligations of such Lender or Administrative Agent to
the other Lenders and Administrative Agents.

       6.9    Time of the Essence.  Time is of the essence of this Agreement.

       6.10   Exculpation.  No Lender or Administrative Agent makes any
representation or warranty, and no Lender or Administrative Agent and none of
such Lender's or Administrative Agent's directors, officers, employees or
agents shall (i) be responsible with respect to any recitals, representations
or warranties, or for the execution, legality, validity, accuracy, sufficiency,
genuineness, effectiveness or enforceability of this Agreement, any of the
other Loan Documents or any other instrument or document executed or delivered
hereunder or thereunder or in connection herewith or therewith, (ii) be under
any duty to any other Lender or Administrative Agent to inquire into or pass
upon any of the foregoing matters, or to make any inquiry concerning the
performance by any party under any of the Loan Documents, or (iii) in any event
be liable as such for any action taken or omitted by it or them, except for its
or their own gross negligence or willful misconduct.  No Lender or
Administrative Agent assumes any responsibility for the financial condition of
any party to the Loan Documents, for the security value or existence of any of
the Properties, or for the performance of any obligations of any party to the
Loan Documents.  No Lender or Administrative Agent shall incur any liability
under or in respect of this Agreement, of any other Loan Document or any
instrument or document delivered under or pursuant hereto or thereto by relying
upon any oral, telephonic, telegraphic, electronic or written request or
notice, consent, waiver, amendment, certificate, affidavit, letter, telegram,
statement, paper, schedule, agreement, report, instrument or document believed
by it to be genuine and signed or sent by the proper Person or Persons;
provided, however, that the foregoing shall not amend or modify any requirement
in any Loan Document that any notice under such Loan Document be in writing.

       6.11   Severability.  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 unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

       6.12   Benefits of Article 15 of the Credit Agreements.  Each of the
Administrative Agents, the Co-Agent and the Arrangers shall be entitled to the
benefits of Article XV of its Credit Agreement and also to the benefits of
Article XV of the other Credit Agreements as if it were a named party in such
Article and party to such other Credit Agreement (provided that any payment
under the indemnification provisions of Section 15.8 of any Credit Agreement
relating to the collection of the Combined Obligations shall be shared by all
Lenders as herein provided), in connection with the performance under this
Agreement.





                                       15
<PAGE>   29
       6.13   No Oral Agreements

       THIS AGREEMENT AND ALL OTHER U.S. LOAN DOCUMENTS, CANADIAN LOAN
DOCUMENTS AND AUSTRALIAN LOAN DOCUMENTS (AS DEFINED IN THE RESPECTIVE CREDIT
AGREEMENTS) EXECUTED BY ANY OF THE PARTIES BEFORE OR SUBSTANTIALLY
CONTEMPORANEOUSLY WITH THE EXECUTION HEREOF TOGETHER CONSTITUTE A WRITTEN LOAN
AGREEMENT AND REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL
AGREEMENTS OF THE PARTIES.  THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE
PARTIES.

                      [SIGNATURES BEGIN ON FOLLOWING PAGE]





                                       16
<PAGE>   30
       IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed as of the date hereof by their respective officers thereunto duly
authorized.



                                     THE FIRST NATIONAL BANK OF CHICAGO, as
                                     Global Administrative Agent


                                     By: /s/ THE FIRST NATIONAL BANK OF CHICAGO
                                        ----------------------------------------
                                     Name:   W. Walter Green
                                     Title:  Attorney-in-fact for The First
                                             National Bank of Chicago





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                    S - 1
<PAGE>   31

                                     THE CHASE MANHATTAN BANK, as Co-Agent under
                                     the U.S. Credit Agreement


                                     By: /s/ THE CHASE MANHATTAN BANK 
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                    S - 2
<PAGE>   32

                                     CHASE SECURITIES AUSTRALIA LIMITED (ACN 002
                                     888 011), as Administrative Agent under the
                                     Australian Credit Agreement

SIGNED on behalf of              )
CHASE SECURITIES AUSTRALIA       )
LIMITED                          )
by its attorney in the           )
presence of:                     )   /s/ CHASE SECURITIES AUSTRALIA LIMITED  
                                     -------------------------------------------
                                     Attorney

                                      Lori Vetters                              
- ---------------------------------    -------------------------------------------
Witness                              Print Name

 Christopher Click               
- ---------------------------------
Print Name





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                    S - 3
<PAGE>   33

                                     BANK OF MONTREAL, as Administrative Agent
                                     under the Canadian Credit Agreement


                                     By: /s/ BANK OF MONTREAL    
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                    S - 4
<PAGE>   34

                                   FIRST CHICAGO CAPITAL MARKETS, INC., as
                                   Arranger


                                   By: /s/ FIRST CHICAGO CAPITAL MARKETS, INC.  
                                      ----------------------------------------
                                   Name:
                                   Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                    S - 5
<PAGE>   35

                                     CHASE SECURITIES INC., as Arranger


                                     By: /s/ CHASE SECURITIES INC.     
                                        ----------------------------------------
                                     Name:   Tod Benton
                                     Title:  Managing Director





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                    S - 6
<PAGE>   36

                                 THE FIRST NATIONAL BANK OF CHICAGO, as a
                                 U.S. Lender


                                 By:  /s/ THE FIRST NATIONAL BANK OF CHICAGO  
                                      --------------------------------------
                                 Name:   W. Walter Green
                                 Title:  Attorney-in-fact for The First
                                         National Bank of Chicago





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                    S - 7
<PAGE>   37

                                     THE CHASE MANHATTAN BANK, as a U.S. Lender


                                     By: /s/ THE CHASE MANHATTAN BANK     
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                    S - 8
<PAGE>   38

                                     BANK OF MONTREAL, as a U.S. Lender


                                     By: /s/ BANK OF MONTREAL        
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                    S - 9
<PAGE>   39

                            MORGAN GUARANTY TRUST COMPANY OF NEW YORK,
                             as a U.S. Lender
              

                             By: /s/ MORGAN GUARANTY TRUST COMPANY OF NEW YORK 
                                ----------------------------------------
                             Name:
                             Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 10
<PAGE>   40

                                     NATIONSBANK OF TEXAS, N.A., as a
                                     U.S. Lender


                                     By: /s/  NATIONSBANK OF TEXAS, N.A.   
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 11
<PAGE>   41

                                     ROYAL BANK OF CANADA, as a U.S. Lender


                                     By: /s/  ROYAL BANK OF CANADA   
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 12
<PAGE>   42

                       BANK OF AMERICA NATIONAL TRUST AND SAVINGS
                       ASSOCIATION, as a U.S. Lender


                       By: BANK OF AMERICA NATIONAL TRUST AND SAVINGS
                           ASSOCIATION                                       
                           ----------------------------------------
                           Name:   J. Stephen Mernick
                           Title:  Senior Vice President





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 13
<PAGE>   43

                                     CIBC INC., as a U.S. Lender


                                     By: /s/ CIBC INC.          
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 14
<PAGE>   44

                                   SOCIETE GENERALE, SOUTHWEST AGENCY, as a
                                   U.S. Lender



                                   By: /s/ SOCIETE GENERALE, SOUTHWEST AGENCY  
                                      ----------------------------------------
                                   Name:
                                   Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 15
<PAGE>   45

                                   ABN-AMRO BANK N.V. - HOUSTON AGENCY, as a
                                   U.S. Lender



                                   By: /s/ ABN-AMRO BANK N.V. - HOUSTON AGENCY  
                                      ----------------------------------------
                                   Name:
                                   Title:
          

                                   By: /s/ ABN-AMRO BANK N.V. - HOUSTON AGENCY
                                      ----------------------------------------
                                   Name:
                                   Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 16
<PAGE>   46

                                THE BANK OF NOVA SCOTIA, ATLANTA AGENCY, as
                                a U.S. Lender



                                By: /s/ THE BANK OF NOVA SCOTIA, ATLANTA AGENCY 
                                   ----------------------------------------
                                Name:
                                Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 17
<PAGE>   47

                                     CHRISTIANIA BANK OG KREDITKASSE, as a
                                     U.S. Lender


                                     By: /s/ CHRISTIANIA BANK OG KREDITKASSE  
                                        ----------------------------------------
                                     Name:
                                     Title:



                                     By: /s/ CHRISTIANIA BANK OG KREDITKASSE   
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 18
<PAGE>   48

                                     CITIBANK, N.A., as a U.S. Lender


                                     By: /s/  CITIBANK, N.A.            
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 19
<PAGE>   49

                             THE LONG-TERM CREDIT BANK OF JAPAN, LTD.,
                             as a U.S. Lender


                             By: /s/  THE LONG-TERM CREDIT BANK OF JAPAN, LTD. 
                                ----------------------------------------
                             Name:
                             Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 20
<PAGE>   50

                            UNION BANK OF SWITZERLAND, HOUSTON AGENCY,
                            as a U.S. Lender
                    

                            By: /s/ UNION BANK OF SWITZERLAND, HOUSTON AGENCY
                               ----------------------------------------
                            Name:
                            Title:
     

                            By: /s/ UNION BANK OF SWITZERLAND, HOUSTON AGENCY
                               ----------------------------------------
                            Name:
                            Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 21
<PAGE>   51

                                     THE FIRST NATIONAL BANK OF BOSTON, as a
                                     U.S. Lender


                                     By: /s/ THE FIRST NATIONAL BANK OF BOSTON 
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 22
<PAGE>   52

                                     BANQUE PARIBAS, as a U.S. Lender


                                     By: /s/ BANQUE PARIBAS
                                        ----------------------------------------
                                     Name:
                                     Title:


                                     By: /s/ BANQUE PARIBAS
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 23
<PAGE>   53

                                      COLORADO NATIONAL BANK, as a U.S. Lender


                                     By: /s/  COLORADO NATIONAL BANK
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 24
<PAGE>   54

                              THE FUJI BANK, LIMITED - HOUSTON AGENCY, as
                              a U.S. Lender


                             By: /s/ THE FUJI BANK, LIMITED - HOUSTON AGENCY
                                ----------------------------------------
                             Name:
                             Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 25
<PAGE>   55

                                     UNION BANK OF CALIFORNIA, N.A., as a
                                     U.S. Lender


                                     By: /s/  UNION BANK OF CALIFORNIA, N.A.
                                        ----------------------------------------
                                     Name:
                                     Title:


                                     By: /s/  UNION BANK OF CALIFORNIA, N.A.
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 26
<PAGE>   56

                                     THE FIRST NATIONAL BANK OF CHICAGO,
                                     AUSTRALIAN BRANCH (ARBN 065 752 918), as an
                                     Australian Lender

SIGNED on behalf of              )
THE FIRST NATIONAL BANK OF       )
CHICAGO, AUSTRALIAN BRANCH       )
by its attorney in the           )
presence of:                     )   /s/ THE FIRST NATIONAL BANK OF CHICAGO,
                                     AUSTRALIAN BRANCH
                                     -------------------------------------------
                                     Attorney

                                        W. Walter Green, III,                   
- ---------------------------------    -------------------------------------------
Witness                              Print Name

 Francis R. Bradley, III         
- ---------------------------------
Print Name





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 27
<PAGE>   57

                                     THE CHASE MANHATTAN BANK (ARBN 074 112
                                     011), as an Australian Lender

SIGNED on behalf of              )
THE CHASE MANHATTAN BANK         )
by its attorney in the           )
presence of:                     )   /s/  THE CHASE MANHATTAN BANK
                                     -------------------------------------------
                                     Attorney

                                      Lori Vetters                              
- ---------------------------------    -------------------------------------------
Witness                              Print Name

 Christopher Click               
- ---------------------------------
Print Name





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 28
<PAGE>   58

                                     J.P. MORGAN AUSTRALIA LIMITED (ACN 004 384
                                     687), as an Australian Lender

SIGNED on behalf of              )
J.P. MORGAN AUSTRALIA LIMITED    )
by its attorney in the           )
presence of:                     )   /s/  J.P. MORGAN AUSTRALIA LIMITED
                                     -------------------------------------------
                                     Attorney

                                                                                
- ---------------------------------    -------------------------------------------
Witness                              Print Name

                                 
- ---------------------------------
Print Name





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 29
<PAGE>   59

                             BANK OF AMERICA NATIONAL TRUST AND SAVINGS
                             ASSOCIATION (ARBN 064 874 531), SYDNEY
                             BRANCH, as an Australian Lender

                             By: /s/ BANK OF AMERICA NATIONAL TRUST AND SAVINGS
                                     ASSOCIATION
                                ----------------------------------------
                             Name:   J. Stephen Mernick
                             Title:  Senior Vice President





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 30
<PAGE>   60

                                     CITIBANK, N.A. (ARBN 072 814 058), as an
                                     Australian Lender


                                     By: /s/  CITIBANK, N.A.
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 31
<PAGE>   61

                                     BANK OF MONTREAL, as a Canadian Lender


                                     By: /s/  BANK OF MONTREAL
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 32
<PAGE>   62

                                     FIRST CHICAGO NBD BANK, CANADA, as a
                                     Canadian Lender


                                     By: /s/ FIRST CHICAGO NBD BANK, CANADA
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 33
<PAGE>   63

                                     THE CHASE MANHATTAN BANK OF CANADA, as a
                                     Canadian Lender


                                     By: /s/ THE CHASE MANHATTAN BANK OF CANADA
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 34
<PAGE>   64

                                     ROYAL BANK OF CANADA, as a Canadian Lender


                                     By: /s/ ROYAL BANK OF CANADA
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 35
<PAGE>   65

                                     CANADIAN IMPERIAL BANK OF COMMERCE, as a
                                     Canadian Lender



                                     By: /s/ CANADIAN IMPERIAL BANK OF COMMERCE
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 36
<PAGE>   66

                                     THE BANK OF NOVA SCOTIA, as a
                                     Canadian Lender


                                     By: /s/ THE BANK OF NOVA SCOTIA
                                        ----------------------------------------
                                     Name:
                                     Title:





                  [SIGNATURE PAGE TO INTERCREDITOR AGREEMENT]

                                   S - 37

<PAGE>   1
                                                                    EXHIBIT 10.5


                                October 31, 1996



To each of the Parties Listed
on attached Schedule I


       Re:    Apache Corporation Global Credit Facility
              Indemnity Agreement

Ladies and Gentlemen:

       Reference is hereby made to (i) that certain Intercreditor Agreement of
even date herewith, in the form attached hereto as Exhibit "A" unless the
parties hereto otherwise agree (the "Intercreditor Agreement"), among the
various commercial lending institutions (the "U.S. Lenders") as are or may
become parties to that certain Fourth Amended and Restated Credit Agreement of
even date herewith among the U.S. Borrower (as herein defined), the U.S.
Lenders, the Global Administrative Agent (as herein defined), the U.S. Co-Agent
(as herein defined) and the Arrangers therein named (the "Arrangers") (as it
may be amended, supplemented, restated or otherwise modified and in effect from
time to time, the "U.S. Credit Agreement"), the various commercial lending
institutions (the "Australian Lenders") as are or may become parties to that
certain Credit Agreement of even date herewith among the Australian Borrower
(as herein defined), the Australian Lenders, the Global Administrative Agent,
the Australian Administrative Agent (as herein defined) and the Arrangers (as
it may be amended, supplemented, restated or otherwise modified and in effect
from time to time, the "Australian Credit Agreement"), the various commercial
lending institutions (the "Canadian Lenders", and together with the U.S.
Lenders and the Australian Lenders, the "Lenders") as are or may become parties
to that certain Credit Agreement of even date herewith among the Canadian
Borrower (as herein defined), the Canadian Lenders, the Global Administrative
Agent, the Canadian Administrative Agent (as herein defined) and the Arrangers
(as it may be amended, supplemented, restated or otherwise modified and in
effect from time to time, the "Canadian Credit Agreement"), The First National
Bank of Chicago, as Global Administrative Agent (the "Global Administrative
Agent"), The Chase Manhattan Bank, as Co-Agent under the U.S. Credit Agreement
(the "U.S. Co-Agent"), Chase Securities Australia Limited (ACN 002 888 011), as
the Administrative Agent for the Australian Lenders (the "Australian
Administrative Agent"), Bank of Montreal, as the Administrative Agent for the
Canadian Lenders (the "Canadian Administrative Agent" and together with the
Global Administrative Agent and the Australian Administrative Agent, the
"Administrative Agents"), First Chicago Capital Markets, Inc., as Arranger, and
Chase Securities Inc., as Arranger; (ii) that certain Fourth Amended and
Restated Credit Agreement of even date herewith among Apache Corporation (the
"U.S. Borrower"), the U.S. Lenders, the Global Administrative Agent, the U.S.
Co-Agent and the Arrangers; (iii) that certain Credit Agreement of even date
herewith among Apache Energy Limited (ACN 009 301
<PAGE>   2
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 2



964) and Apache Oil Australia Pty. Limited (ACN 050 611 688) (collectively, the
"Australian Borrower"), the Australian Lenders, the Global Administrative
Agent, the Australian Administrative Agent and the Arrangers; (iv) that certain
Credit Agreement of even date herewith among Apache Canada Ltd. (the "Canadian
Borrower", and together with the U.S. Borrower and the Australian Borrower, the
"Borrowers"), the Canadian Lenders, the Global Administrative Agent, the
Canadian Administrative Agent and the Arrangers, as each may be amended,
supplemented, restated or otherwise modified and in effect from time to time.
Capitalized terms not otherwise defined herein shall have the meanings assigned
to such terms in the Intercreditor Agreement.

       The Australian Borrower consents to the terms and provisions of this
letter agreement (this "Indemnity Agreement") and the Intercreditor Agreement,
including, without limitation, the terms and provisions regarding the
disclosure of information, the sharing of payments, and the purchase and sale
of participations in the Credit Agreements, consents to all actions required of
any Administrative Agent or Lender pursuant to the terms and conditions of the
Intercreditor Agreement, and agrees to take all actions necessary to give
effect to the terms and provisions of this Indemnity Agreement and the
Intercreditor Agreement.  The Australian Borrower agrees that any amounts which
are paid (or received by way of setoff, combination of accounts or similar
arrangements) to cure any Debt Limit Excession shall be made by the U.S.
Borrower to the U.S. Lenders, by the Australian Borrower to the Australian
Lenders and by the Canadian Borrower to the Canadian Lenders in accordance with
their respective Sharing Percentages as determined by the Administrative Agents
in accordance with the terms of the Intercreditor Agreement.  It is the
intention of the parties hereto that, except as otherwise set forth in this
Indemnity Agreement, under no circumstances will any Borrower be required to
pay any principal amount under the Global Loan Documents in excess of
outstanding Obligations with respect to its Credit Agreement and any guaranty
executed by the Borrower plus any interest, fees and other amounts as set forth
in this Indemnity Letter and any other Global Loan Document.

       If after any amount is paid under Section 3.3(c) of the Intercreditor
Agreement a Borrower or any trustee, liquidator, receiver or receiver-manager
or Person with analogous powers  (collectively the "Reimbursed Borrower")
recovers any amount from any Lenders ("Disgorging Lenders") in respect of any
amount theretofore used to reduce outstanding Obligations under any Credit
Agreement or to purchase or repurchase participation interests from the other
Lenders, then the amount so recovered (including any interest paid by the
Lenders) shall be treated for all purposes: (i) as between the relevant
Reimbursed Borrower and the Disgorging Lenders, and (ii) as between the
Disgorging Lenders and the other Lenders (the
<PAGE>   3
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 3



"Non-Disgorging Lenders"), to be outstanding as U.S. Credit Outstandings,
Canadian Credit Outstandings or Australian Credit Outstandings, as applicable,
in which case the Reallocable Payment Proportions shall thereupon be adjusted
and, notwithstanding the fact that no reallocable payment is received, Section
3.3(c) of the Intercreditor Agreement again applied in order that the
Reallocable Payment Proportions equal the applicable Target Sharing
Percentages.

       To the extent the application of the provisions of this Indemnity
Agreement or the Intercreditor Agreement give rise to any liability for any tax
payments (other than income tax and franchise tax payments) in connection with
any payments made by the U.S. Borrower, the Australian Borrower, the Canadian
Borrower, any Administrative Agent, the Co-Agent, any Arranger, or any Lender
or any other party to any Credit Agreement, then (notwithstanding any
provisions to the contrary set forth in the Credit Agreements), the Australian
Borrower agrees that the Borrowers, including the Australian Borrower, jointly
and severally, shall indemnify each Lender, Administrative Agent, Co-Agent and
Arranger (the "Loan Parties") and shall hold each Loan Party free and harmless
from and against any such liability; provided, however, that each Loan Party
(if so requested by a Borrower under a Credit Agreement through the appropriate
Administrative Agent) will use good faith efforts to accommodate any reasonable
request by such Borrower in order to avoid the need for, or reduce the amount
of, such compensation so long as the request will not, in the sole opinion of
the applicable Loan Party, be disadvantageous to such Loan Party.

       The Australian Borrower agree to reimburse each Loan Party for any
reasonable costs and out-of-pocket expenses (including fees and expenses of
consultants and attorneys' fees (on a solicitor and his own client basis with
respect to the Canadian Loan Documents) for such Loan Party) paid or incurred
by such Loan Party in connection with the preparation, review, execution,
delivery, amendment, modification and administration of the Global Loan
Documents, including, without limitation, this Indemnity Agreement and the
Intercreditor Agreement.  The Australian Borrower agrees to reimburse each Loan
Party for any reasonable costs and out-of-pocket expenses (including attorneys'
fees (on a solicitor and his own client basis with respect to the Canadian Loan
Documents) for the Loan Parties) paid or incurred by any Loan Party in
connection with the collection and enforcement of the Global Loan Documents,
including this Indemnity Agreement and the Intercreditor Agreement.

       The Australian Borrower hereby indemnifies, exonerates and holds each
Loan Party, and their respective directors, agents, officers and employees
("Indemnified Persons") free and harmless from and against any and all losses,
claims, damages, penalties, judgments, liabilities, actions, suits, costs and
expenses (including, without limitation, all expenses of litigation or
<PAGE>   4
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 4



preparation therefor whether or not any Loan Party or any Indemnified Person is
a party thereto and all other attorneys' fees (on a solicitor and his own
client basis with respect to the Canadian Loan Documents) and disbursements)
("Claims") which any of them may pay or incur as a result of, arising out of,
or relating to, this Indemnity Agreement, the Intercreditor Agreement, the
other Global Loan Documents or the transactions contemplated hereby or thereby
(the "Indemnified Liabilities"), except to the extent that a final order of a
court of competent jurisdiction finds that such Indemnified Liability arises
solely from such Indemnified Person's gross negligence or wilful misconduct.
If and to the extent that the foregoing undertaking may be unenforceable for
any reason, the Australian Borrower hereby agrees to make the maximum
contribution to the payment and satisfaction of each of the Indemnified
Liabilities which is permissible under applicable law.  The Australian Borrower
shall be obligated to indemnify the Indemnified Persons for all Claims
regardless of whether the Australian Borrower had knowledge of the facts and
circumstances giving rise to such Claims.

       Nothing contained in this agreement shall be construed in a manner which
would deem any party to this Indemnity Agreement, the Intercreditor Agreement
or any other Global Loan Document (under state law or for tax purposes) to be
acting in partnership with any other party.  The obligations of the Australian
Borrower under this Indemnity Agreement and the Intercreditor Agreement shall
survive the termination of this Indemnity Agreement, the Intercreditor
Agreement or any other Global Loan Document or any non-assumption of this
Indemnity Agreement, the Intercreditor Agreement or any other Global Loan
Document in a bankruptcy or similar proceeding.

       This Indemnity Agreement may be executed in any number of counterparts
and by different parties on separate counterparts, and all such counterparts
shall together constitute but one and the same agreement.
<PAGE>   5
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 5




       THIS INDEMNITY AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH THE
INTERNAL LAWS (AND NOT THE LAW OF CONFLICTS) OF THE STATE OF ILLINOIS, BUT
GIVING EFFECT TO FEDERAL LAWS APPLICABLE TO NATIONAL BANKS.  This Indemnity
Agreement constitutes the entire understanding of the parties hereto with the
Australian Borrower with respect to the Intercreditor Agreement and this
Indemnity Agreement and supersedes any prior agreements, written or oral, with
respect thereto.


                                      Very truly yours,


                                      APACHE ENERGY LIMITED (ACN 009 301
                                      964), as an Australian Borrower


                                      By: /s/ APACHE ENERGY LIMITED 
                                         ----------------------------------
                                      Name:  Matthew W. Dundrea
                                      Title: Treasurer



                                      APACHE OIL AUSTRALIA PTY. LIMITED
                                      (ACN 050 611 688), as an Australian
                                      Borrower


                                      By: /s/ APACHE OIL AUSTRALIA PTY. LIMITED 
                                         --------------------------------------
                                      Name:  Matthew W. Dundrea
                                      Title: Treasurer
<PAGE>   6
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 6




AGREED AND CONSENTED TO BY:


THE FIRST NATIONAL BANK OF CHICAGO,
 as Global Administrative Agent and on behalf of
 the U.S. Lenders under the U.S. Credit Agreement


By: /s/ THE FIRST NATIONAL BANK OF CHICAGO 
   ---------------------------------------
Name:  W. Walter Green
Title: Attorney-in-fact for
       The First National Bank of Chicago
<PAGE>   7
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 7




AGREED AND CONSENTED TO BY:


THE CHASE MANHATTAN BANK, as U.S. Co-Agent


By: /s/ THE CHASE MANHATTAN BANK 
   ----------------------------------------
Name:
Title:
<PAGE>   8
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 8




AGREED AND CONSENTED TO BY:


CHASE SECURITIES AUSTRALIA LIMITED (ACN 002 888 011), as
 Australian Administrative Agent and on behalf of
 the Australian Lenders under the Australian Credit Agreement


SIGNED on behalf of         )
CHASE SECURITIES            )
AUSTRALIA LIMITED           )
by its attorney in the      )
presence of:                )            /s/ CHASE SECURITIES AUSTRALIA LIMITED 
                                         -------------------------------------
                                         Attorney

                                         Lori Vetters                        
- ------------------------------           -------------------------------------
Witness                                  Print Name

 Christopher Click            
- ------------------------------
Print Name
<PAGE>   9
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 9




AGREED AND CONSENTED TO BY:


BANK OF MONTREAL, as Canadian
 Administrative Agent and on behalf of
 the Canadian Lenders under the Canadian Credit Agreement


By: /s/ BANK OF MONTREAL 
   ----------------------------------------
Name:
Title:
<PAGE>   10
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 10




AGREED AND CONSENTED TO BY:


FIRST CHICAGO CAPITAL MARKETS,
 INC., as Arranger


By: /s/ FIRST CHICAGO CAPITAL MARKETS, INC.
   ----------------------------------------
Name:
Title:
<PAGE>   11
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 11




AGREED AND CONSENTED TO BY:


CHASE SECURITIES INC., as Arranger


By: /s/ CHASE SECURITIES INC. 
   ----------------------------------------
Name:  Tod Benton
Title: Managing Director
<PAGE>   12
                                   SCHEDULE I


The First National Bank of Chicago,
  as Global Administrative Agent

The Chase Manhattan Bank, as U.S. Co-Agent

Chase Securities Australia Limited, as
 Australian Administrative Agent

Bank of Montreal, as Canadian
 Administrative Agent

First Chicago Capital Markets, Inc., as Arranger

Chase Securities Inc., as Arranger

The U.S. Lenders party to the Fourth Amended
 and Restated Credit Agreement

The Australian Lenders party to the Australian Credit Agreement

The Canadian Lenders party to the Canadian Credit Agreement

c/o The First National Bank of Chicago
One First National Plaza
Chicago, Illinois  60670

<PAGE>   1
                                                                    EXHIBIT 10.6



                                October 31, 1996



To each of the Parties Listed
on attached Schedule I


       Re:    Apache Corporation Global Credit Facility Indemnity Agreement

Ladies and Gentlemen:

       Reference is hereby made to (i) that certain Intercreditor Agreement of
even date herewith, in the form attached hereto as Exhibit "A" unless the
parties hereto otherwise agree (the "Intercreditor Agreement"), among the
various commercial lending institutions (the "U.S. Lenders") as are or may
become parties to that certain Fourth Amended and Restated Credit Agreement of
even date herewith among the U.S. Borrower (as herein defined), the U.S.
Lenders, the Global Administrative Agent (as herein defined), the U.S. Co-Agent
(as herein defined) and the Arrangers therein named (the "Arrangers") (as it
may be amended, supplemented, restated or otherwise modified and in effect from
time to time, the "U.S. Credit Agreement"), the various commercial lending
institutions (the "Australian Lenders") as are or may become parties to that
certain Credit Agreement of even date herewith among the Australian Borrower
(as herein defined), the Australian Lenders, the Global Administrative Agent,
the Australian Administrative Agent (as herein defined) and the Arrangers (as
it may be amended, supplemented, restated or otherwise modified and in effect
from time to time, the "Australian Credit Agreement"), the various commercial
lending institutions (the "Canadian Lenders", and together with the U.S.
Lenders and the Australian Lenders, the "Lenders") as are or may become parties
to that certain Credit Agreement of even date herewith among the Canadian
Borrower (as herein defined), the Canadian Lenders, the Global Administrative
Agent, the Canadian Administrative Agent (as herein defined) and the Arrangers
(as it may be amended, supplemented, restated or otherwise modified and in
effect from time to time, the "Canadian Credit Agreement"), The First National
Bank of Chicago, as Global Administrative Agent (the "Global Administrative
Agent"), The Chase Manhattan Bank, as Co-Agent under the U.S. Credit Agreement
(the "U.S. Co-Agent"), Chase Securities Australia Limited (ACN 002 888 011), as
the Administrative Agent for the Australian Lenders (the "Australian
Administrative Agent"), Bank of Montreal, as the Administrative Agent for the
Canadian Lenders (the "Canadian Administrative Agent" and together with the
Global Administrative Agent and the Australian Administrative Agent, the
"Administrative Agents"), First Chicago Capital Markets, Inc., as Arranger, and
Chase Securities Inc., as Arranger; (ii) that certain Fourth Amended and
Restated Credit Agreement of even date herewith among Apache Corporation (the
"U.S. Borrower"), the U.S. Lenders, the Global Administrative Agent, the U.S.
Co-Agent and the Arrangers; (iii) that certain Credit Agreement of even date
herewith among Apache Energy Limited (ACN 009 301
<PAGE>   2
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 2



964) and Apache Oil Australia Pty. Limited (ACN 050 611 688) (collectively, the
"Australian Borrower"), the Australian Lenders, the Global Administrative
Agent, the Australian Administrative Agent and the Arrangers; (iv) that certain
Credit Agreement of even date herewith among Apache Canada Ltd. (the "Canadian
Borrower", and together with the U.S. Borrower and the Australian Borrower, the
"Borrowers"), the Canadian Lenders, the Global Administrative Agent, the
Canadian Administrative Agent and the Arrangers, as each may be amended,
supplemented, restated or otherwise modified and in effect from time to time.
Capitalized terms not otherwise defined herein shall have the meanings assigned
to such terms in the Intercreditor Agreement.

       The Canadian Borrower consents to the terms and provisions of this
letter agreement (this "Indemnity Agreement") and the Intercreditor Agreement,
including, without limitation, the terms and provisions regarding the
disclosure of information, the sharing of payments, and the purchase and sale
of participations in the Credit Agreements, consents to all actions required of
any Administrative Agent or Lender pursuant to the terms and conditions of the
Intercreditor Agreement, and agrees to take all actions necessary to give
effect to the terms and provisions of this Indemnity Agreement and the
Intercreditor Agreement.  The Canadian Borrower agrees that any amounts which
are paid (or received by way of setoff, combination of accounts or similar
arrangements) to cure any Debt Limit Excession shall be made by the U.S.
Borrower to the U.S. Lenders, by the Australian Borrower to the Australian
Lenders and by the Canadian Borrower to the Canadian Lenders in accordance with
their respective Sharing Percentages as determined by the Administrative Agents
in accordance with the terms of the Intercreditor Agreement.  It is the
intention of the parties hereto that, except as otherwise set forth in this
Indemnity Agreement, under no circumstances will any Borrower be required to
pay any principal amount under the Global Loan Documents in excess of
outstanding Obligations with respect to its Credit Agreement and any guaranty
executed by the Borrower plus any interest, fees and other amounts as set forth
in this Indemnity Letter and any other Global Loan Document.

       If after any amount is paid under Section 3.3(c) of the Intercreditor
Agreement a Borrower or any trustee, liquidator, receiver or receiver-manager
or Person with analogous powers  (collectively the "Reimbursed Borrower")
recovers any amount from any Lenders ("Disgorging Lenders") in respect of any
amount theretofore used to reduce outstanding Obligations under any Credit
Agreement or to purchase or repurchase participation interests from the other
Lenders, then the amount so recovered (including any interest paid by the
Lenders) shall be treated for all purposes: (i) as between the relevant
Reimbursed Borrower and the Disgorging Lenders, and (ii) as between the
Disgorging Lenders and the other Lenders (the
<PAGE>   3
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 3



"Non-Disgorging Lenders"), to be outstanding as U.S. Credit Outstandings,
Canadian Credit Outstandings or Australian Credit Outstandings, as applicable,
in which case the Reallocable Payment Proportions shall thereupon be adjusted
and, notwithstanding the fact that no reallocable payment is received, Section
3.3(c) of the Intercreditor Agreement again applied in order that the
Reallocable Payment Proportions equal the applicable Target Sharing
Percentages.

       To the extent the application of the provisions of this Indemnity
Agreement or the Intercreditor Agreement give rise to any liability for any tax
payments (other than income tax and franchise tax payments) in connection with
any payments made by the U.S. Borrower, the Australian Borrower, the Canadian
Borrower, any Administrative Agent, the Co-Agent, any Arranger, or any Lender
or any other party to any Credit Agreement, then (notwithstanding any
provisions to the contrary set forth in the Credit Agreements), the Canadian
Borrower agrees that the Borrowers, including the Canadian Borrower, jointly
and severally, shall indemnify each Lender, Administrative Agent, Co-Agent and
Arranger (the "Loan Parties") and shall hold each Loan Party free and harmless
from and against any such liability; provided, however, that each Loan Party
(if so requested by a Borrower under a Credit Agreement through the appropriate
Administrative Agent) will use good faith efforts to accommodate any reasonable
request by such Borrower in order to avoid the need for, or reduce the amount
of, such compensation so long as the request will not, in the sole opinion of
the applicable Loan Party, be disadvantageous to such Loan Party.

       The Canadian Borrower agree to reimburse each Loan Party for any
reasonable costs and out-of-pocket expenses (including fees and expenses of
consultants and attorneys' fees (on a solicitor and his own client basis with
respect to the Canadian Loan Documents) for such Loan Party) paid or incurred
by such Loan Party in connection with the preparation, review, execution,
delivery, amendment, modification and administration of the Global Loan
Documents, including, without limitation, this Indemnity Agreement and the
Intercreditor Agreement.  The Canadian Borrower agrees to reimburse each Loan
Party for any reasonable costs and out-of-pocket expenses (including attorneys'
fees (on a solicitor and his own client basis with respect to the Canadian Loan
Documents) for the Loan Parties) paid or incurred by any Loan Party in
connection with the collection and enforcement of the Global Loan Documents,
including this Indemnity Agreement and the Intercreditor Agreement.

       The Canadian Borrower hereby indemnifies, exonerates and holds each Loan
Party, and their respective directors, agents, officers and employees
("Indemnified Persons") free and harmless from and against any and all losses,
claims, damages, penalties, judgments, liabilities, actions, suits, costs and
expenses (including, without limitation, all expenses of litigation or
<PAGE>   4
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 4



preparation therefor whether or not any Loan Party or any Indemnified Person is
a party thereto and all other attorneys' fees (on a solicitor and his own
client basis with respect to the Canadian Loan Documents) and disbursements)
("Claims") which any of them may pay or incur as a result of, arising out of,
or relating to, this Indemnity Agreement, the Intercreditor Agreement, the
other Global Loan Documents or the transactions contemplated hereby or thereby
(the "Indemnified Liabilities"), except to the extent that a final order of a
court of competent jurisdiction finds that such Indemnified Liability arises
solely from such Indemnified Person's gross negligence or wilful misconduct.
If and to the extent that the foregoing undertaking may be unenforceable for
any reason, the Canadian Borrower hereby agrees to make the maximum
contribution to the payment and satisfaction of each of the Indemnified
Liabilities which is permissible under applicable law.  The Canadian Borrower
shall be obligated to indemnify the Indemnified Persons for all Claims
regardless of whether the Canadian Borrower had knowledge of the facts and
circumstances giving rise to such Claims.

       Nothing contained in this agreement shall be construed in a manner which
would deem any party to this Indemnity Agreement, the Intercreditor Agreement
or any other Global Loan Document (under state law or for tax purposes) to be
acting in partnership with any other party.  The obligations of the Canadian
Borrower under this Indemnity Agreement and the Intercreditor Agreement shall
survive the termination of this Indemnity Agreement, the Intercreditor
Agreement or any other Global Loan Document or any non-assumption of this
Indemnity Agreement, the Intercreditor Agreement or any other Global Loan
Document in a bankruptcy or similar proceeding.

       This Indemnity Agreement may be executed in any number of counterparts
and by different parties on separate counterparts, and all such counterparts
shall together constitute but one and the same agreement.
<PAGE>   5
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 5




       THIS INDEMNITY AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH THE
INTERNAL LAWS (AND NOT THE LAW OF CONFLICTS) OF THE STATE OF ILLINOIS, BUT
GIVING EFFECT TO FEDERAL LAWS APPLICABLE TO NATIONAL BANKS.  This Indemnity
Agreement constitutes the entire understanding of the parties hereto with the
Canadian Borrower with respect to the Intercreditor Agreement and this
Indemnity Agreement and supersedes any prior agreements, written or oral, with
respect thereto.


                                           Very truly yours,

                                           APACHE CANADA LTD., as Canadian
                                           Borrower


                                           By: /s/ APACHE CANADA LTD.
                                              ----------------------------------
                                           Name:  Matthew W. Dundrea
                                           Title: Treasurer
<PAGE>   6
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 6




AGREED AND CONSENTED TO BY:


THE FIRST NATIONAL BANK OF CHICAGO,
 as Global Administrative Agent and on behalf of
 the U.S. Lenders under the U.S. Credit Agreement


By: /s/ THE FIRST NATIONAL BANK OF CHICAGO               
   ----------------------------------------
Name:  W. Walter Green
Title: Attorney-in-fact for
       The First National Bank of Chicago
<PAGE>   7
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 7




AGREED AND CONSENTED TO BY:


THE CHASE MANHATTAN BANK, as U.S. Co-Agent


By: /s/ THE CHASE MANHATTAN BANK 
   ----------------------------------------
Name:
Title:
<PAGE>   8
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 8




AGREED AND CONSENTED TO BY:


CHASE SECURITIES AUSTRALIA LIMITED (ACN 002 888 011), as
 Australian Administrative Agent and on behalf of
 the Australian Lenders under the Australian Credit Agreement


SIGNED on behalf of         )
CHASE SECURITIES            )
AUSTRALIA LIMITED           )
by its attorney in the      )
presence of:                )            /s/ CHASE SECURITIES AUSTRALIA LIMITED 
                                         -------------------------------------
                                         Attorney

                                         Lori Vetters                        
- ------------------------------           -------------------------------------
Witness                                  Print Name

Christopher Click            
- ------------------------------
Print Name
<PAGE>   9
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 9




AGREED AND CONSENTED TO BY:


BANK OF MONTREAL, as Canadian
 Administrative Agent and on behalf of
 the Canadian Lenders under the Canadian Credit Agreement


By: /s/ BANK OF MONTREAL 
   ----------------------------------------
Name:
Title:
<PAGE>   10
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 10




AGREED AND CONSENTED TO BY:


FIRST CHICAGO CAPITAL MARKETS,
 INC., as Arranger


By: /s/ FIRST CHICAGO CAPITAL MARKETS, INC.
    ---------------------------------------
Name:
Title:
<PAGE>   11
To each of the Parties Listed
on attached Schedule I
October 31, 1996
Page 11




AGREED AND CONSENTED TO BY:


CHASE SECURITIES INC., as Arranger


By: /s/ CHASE SECURITIES INC. 
   ----------------------------------------
Name:  Tod Benton
Title: Managing Director
<PAGE>   12
                                   SCHEDULE I


The First National Bank of Chicago,
  as Global Administrative Agent

The Chase Manhattan Bank, as U.S. Co-Agent

Chase Securities Australia Limited, as
 Australian Administrative Agent

Bank of Montreal, as Canadian
 Administrative Agent

First Chicago Capital Markets, Inc., as Arranger

Chase Securities Inc., as Arranger

The U.S. Lenders party to the Fourth Amended
 and Restated Credit Agreement

The Australian Lenders party to the Australian Credit Agreement

The Canadian Lenders party to the Canadian Credit Agreement

c/o The First National Bank of Chicago
One First National Plaza
Chicago, Illinois  60670

<PAGE>   1
                                                                    EXHIBIT 99.1


                             [APACHE LETTERHEAD]


CONTACTS:

(MEDIA):      JOHN KELSO    (713) 296-6155
              TONY LENTINI  (713) 296-6227
(INVESTOR):   ROBERT DYE    (713) 296-6662

                                                           FOR IMMEDIATE RELEASE


                 APACHE OFFERS PROGRAM FOR ODD-LOT SHAREHOLDERS

       Houston (October 25, 1996) -- Apache Corporation (NYSE: APA) today
announced a purchase/sale program for odd-lot shareholders.  The program will
enable Apache shareholders owning fewer than 100 shares of the company's common
stock as of October 18, 1996, either to purchase enough additional stock to
reach 100 shares or to sell their holdings completely.

       The program is entirely voluntary and will be conducted exclusively
through the mail.  Participants will pay a processing fee of 75 cents for each
share purchased or sold.  Shares submitted for sale will first be matched to
purchase requests; unmatched shares will be bought by Apache and added to its
shares held in treasury.  If more shares are purchased by odd-lot shareholders
than sold, the unmatched purchases will be covered by shares bought in the open
market by Apache's agent.

       Program materials are scheduled to be mailed on October 28.  Shareholder
Communications Corporation will administer the program, which expires November
22, unless extended by Apache.

       Apache established the program to reduce administrative costs while
providing small shareholders with a convenient and inexpensive method of
purchasing or selling shares.  Shares purchased or sold under the program will
be at prevailing market prices.  This program does not apply to any shares held
in Apache's dividend reinvestment plan.

       Apache Corporation is a large gas and oil independent with operations in
North America and abroad.  Its shares are traded on the New York and Chicago
stock exchanges.

                                     -end-


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