APACHE CORP
8-K, 1997-06-25
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: June 13, 1997


                               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 June 12, 1997, Apache Corporation ("Apache") replaced its global
credit facility with a new global credit facility (the "Global Credit
Facility"), which consists of several principal agreements. Apache entered into
a Credit Agreement (which is listed under Item 7 as Exhibit 10.1 and
incorporated herein by reference) with a credit commitment of $700 million
among Apache, the Lenders party thereto, Morgan Guaranty Trust Company, as
Global Documentation Agent and U.S. Syndication Agent, The First National Bank
of Chicago, as U.S. Documentation Agent, NationsBank of Texas, N.A., as
Co-Agent, Union Bank of Switzerland, Houston Agency, as Co-Agent, and The Chase
Manhattan Bank, as Global Administrative Agent. 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 of $125 million among Apache Canada, the
Lenders party thereto, Morgan Guaranty Trust Company, as Global Documentation
Agent, Royal Bank of Canada, as Canadian Documentation Agent, The Chase
Manhattan Bank of Canada, as Canadian Syndication Agent, Bank of Montreal, as
Canadian Administrative Agent, and The Chase Manhattan Bank, as Global
Administrative Agent. 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 of $175 million
among AEL, Apache Oil Australia, the Lenders party thereto, Morgan Guaranty
Trust Company, as Global Documentation Agent, Bank of America National Trust
and Savings Association, Sydney Branch, as Australian Documentation Agent, The
Chase Manhattan Bank, as Australian Syndication Agent, Citisecurities Limited,
as Australian Administrative Agent, and The Chase Manhattan Bank, as Global
Administrative Agent.

         Under the Global Credit Facility borrowing availability is no longer
restricted by a borrowing base calculation. Also, certain covenants and
restrictions contained in the previous credit facility have been eliminated and
certain interest rates have been reduced. The U.S. portion of the Global Credit
Facility is available as backup for Apache's commercial paper program, which
was recently expanded to $700 million. As of June 12, 1997, $209 million was
outstanding under the Global Credit Facility and $300 million was outstanding
under Apache's commercial paper program.

         Apache's press release relating to the Global Credit Facility and the
expansion of its commercial paper program is listed under Item 7 as Exhibit 
99.1 and is incorporated herein by reference.



<PAGE>   3



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


           EXHIBITS

             10.1*         Credit Agreement, dated June 12, 1997, among the
                           Registrant, the lenders named therein, Morgan
                           Guaranty Trust Company, as Global Documentation
                           Agent and U.S. Syndication Agent, The First National
                           Bank of Chicago, as U.S. Documentation Agent,
                           NationsBank of Texas, N.A., as Co-Agent, Union Bank
                           of Switzerland, Houston Agency, as Co-Agent, and The
                           Chase Manhattan Bank, as Global Administrative
                           Agent.

             10.2*         Credit Agreement, dated June 12, 1997, among Apache
                           Canada Ltd., a wholly-owned subsidiary of the
                           Registrant, the lenders named therein, Morgan
                           Guaranty Trust Company, as Global Documentation
                           Agent, Royal Bank of Canada, as Canadian
                           Documentation Agent, The Chase Manhattan Bank of
                           Canada, as Canadian Syndication Agent, Bank of
                           Montreal, as Canadian Administrative Agent, and The
                           Chase Manhattan Bank, as Global Administrative
                           Agent.

             10.3*         Credit Agreement, dated June 12, 1997, among Apache
                           Energy Limited and Apache Oil Australia Pty.
                           Limited, wholly-owned subsidiaries of the
                           Registrant, the lenders named therein, Morgan
                           Guaranty Trust Company, as Global Documentation
                           Agent, Bank of America National Trust and Savings
                           Association, Sydney Branch, as Australian
                           Documentation Agent, The Chase Manhattan Bank, as
                           Australian Syndication Agent, Citisecurities
                           Limited, as Australian Administrative Agent, and The
                           Chase Manhattan Bank, as Global Administrative
                           Agent.

             99.1*         Press release, dated June 24, 1997, "Apache Replaces
                           $1 Billion Credit Facility, Expands Commercial Paper
                           Program."
             ---------
             *             Filed herewith.


<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:  June 25, 1997                         By: /s/ Z. S. KOBIASHVILI
                                                ----------------------------
                                             Name:  Z. S. Kobiashvili
                                             Title: Vice President and 
                                                    General Counsel



<PAGE>   5

                                 EXHIBIT INDEX

   EXHIBITS                          DESCRIPTION
   --------                          -----------

     10.1*        Credit Agreement, dated June 12, 1997, among the Registrant,
                  the lenders named therein, Morgan Guaranty Trust Company, as
                  Global Documentation Agent and U.S. Syndication Agent, The
                  First National Bank of Chicago, as U.S. Documentation Agent,
                  NationsBank of Texas, N.A., as Co-Agent, Union Bank of
                  Switzerland, Houston Agency, as Co-Agent, and The Chase
                  Manhattan Bank, as Global Administrative Agent.

     10.2*        Credit Agreement, dated June 12, 1997, among Apache Canada
                  Ltd., a wholly-owned subsidiary of the Registrant, the
                  lenders named therein, Morgan Guaranty Trust Company, as
                  Global Documentation Agent, Royal Bank of Canada, as Canadian
                  Documentation Agent, The Chase Manhattan Bank of Canada, as
                  Canadian Syndication Agent, Bank of Montreal, as Canadian
                  Administrative Agent, and The Chase Manhattan Bank, as Global
                  Administrative Agent.

     10.3*        Credit Agreement, dated June 12, 1997, among Apache Energy
                  Limited and Apache Oil Australia Pty. Limited, wholly-owned
                  subsidiaries of the Registrant, the lenders named therein,
                  Morgan Guaranty Trust Company, as Global Documentation Agent,
                  Bank of America National Trust and Savings Association,
                  Sydney Branch, as Australian Documentation Agent, The Chase
                  Manhattan Bank, as Australian Syndication Agent,
                  Citisecurities Limited, as Australian Administrative Agent,
                  and The Chase Manhattan Bank, as Global Administrative Agent.

     99.1*        Press release, dated June 24, 1997, "Apache Replaces $1
                  Billion Credit Facility, Expands Commercial Paper Program."


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


<PAGE>   1






                                                                    EXHIBIT 10.1

                            [U.S. CREDIT AGREEMENT]

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




                                CREDIT AGREEMENT

                           dated as of June 12, 1997

                                     among

                              APACHE CORPORATION,

                           THE LENDERS PARTY HERETO,

                         MORGAN GUARANTY TRUST COMPANY,
                         as Global Documentation Agent
                          and U.S. Syndication Agent,

                      THE FIRST NATIONAL BANK OF CHICAGO,
                          as U.S. Documentation Agent,

                        NATIONSBANK OF TEXAS, N.A., and
                   UNION BANK OF SWITZERLAND, HOUSTON AGENCY,
                                 as Co-Agents,

                                      and

                           THE CHASE MANHATTAN BANK,
                         as Global Administrative Agent

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

                             CHASE SECURITIES INC.,
                               as Global Arranger

                           JP MORGAN SECURITIES INC.,
                             as Global Co-Arranger



================================================================================
<PAGE>   2



                               TABLE OF CONTENTS


<TABLE>
<S>                  <C>                                                                                               <C>
ARTICLE I            Definitions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
         1.1.        Defined Terms  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
         1.2.        Classification of Loans and Borrowings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         1.3.        Terms Generally  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         1.4.        Accounting Terms; GAAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18

ARTICLE II           The Credits  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
         2.1.        Commitments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
         2.2.        Loans and Borrowings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
         2.3.        Requests for Revolving Borrowings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19
         2.4.        Competitive Bid Procedure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
         2.5.        Funding of Borrowings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
         2.6.        Extension of Maturity Date and of Commitments  . . . . . . . . . . . . . . . . . . . . . . . . .  23
         2.7.        Interest Elections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25
         2.8.        Termination and Reduction of Commitments . . . . . . . . . . . . . . . . . . . . . . . . . . . .  26
         2.9.        Repayment of Loans; Evidence of Debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
         2.10.       Prepayment of Loans  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28
         2.11.       Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28
         2.12.       Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  29
         2.13.       Alternate Rate of Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  30
         2.14.       Increased Costs  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31
         2.15.       Break Funding Payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         2.16.       Taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         2.17.       Payments Generally; Pro Rata Treatment; Sharing of Set-offs  . . . . . . . . . . . . . . . . . .  33
         2.18.       Mitigation Obligations; Replacement of Lenders . . . . . . . . . . . . . . . . . . . . . . . . .  35
         2.19.       Currency Conversion and Currency Indemnity . . . . . . . . . . . . . . . . . . . . . . . . . . .  36

ARTICLE III          Representations and Warranties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         3.1.        Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         3.2.        Authorization and Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         3.3.        Government Approval and Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         3.4.        Pension and Welfare Plans  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         3.5.        Regulation U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         3.6.        Taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         3.7.        Subsidiaries; Restricted Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38

ARTICLE IV           Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
</TABLE>
<PAGE>   3


<TABLE>
<S>                  <C>                                                                                               <C>
         4.1.        Initial Loan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         4.2.        All Loans  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41

ARTICLE V            Affirmative Covenants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
         5.1.        Financial Reporting and Notices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
         5.2.        Compliance with Laws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
         5.3.        Maintenance of Properties  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         5.4.        Insurance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         5.5.        Books and Records  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         5.6.        Minimum Book Value for Assets of Borrower and its Restricted
                     Subsidiaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         5.7.        Use of Proceeds  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44

ARTICLE VI           Financial Covenants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         6.1.        Minimum Tangible Net Worth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         6.2.        Ratio of Total Debt to Capital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44

ARTICLE VII          Negative Covenants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         7.1.        Liens  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         7.2.        Mergers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         7.3.        Asset Dispositions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         7.4.        Transactions with Affiliates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         7.5.        Restrictive Agreements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         7.6.        Guaranties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47

ARTICLE VIII         Events of Default  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         8.1.        Listing of Events of Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         8.2.        Action if Bankruptcy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
         8.3.        Action if Other Event of Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49

ARTICLE IX           Agents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50

ARTICLE X            Miscellaneous  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
         10.1.       Notices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
         10.2.       Waivers; Amendments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53
         10.3.       Expenses; Indemnity; Damage Waiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         10.4.       Successors and Assigns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
         10.5.       Survival . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  58
         10.6.       Counterparts; Integration; Effectiveness . . . . . . . . . . . . . . . . . . . . . . . . . . . .  58
         10.7.       Severability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  59
         10.8.       Right of Setoff  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  59
</TABLE>





                                       ii
<PAGE>   4


<TABLE>
         <S>         <C>                                                                                               <C>
         10.9.       GOVERNING LAW; JURISDICTION; CONSENT TO SERVICE OF PROCESS . . . . . . . . . . . . . . . . . . .  59
         10.10.      Headings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
         10.11.      Confidentiality  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
         10.12.      Interest Rate Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
         10.13.      NO ORAL AGREEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  62
</TABLE>





                                      iii
<PAGE>   5


                             SCHEDULES AND EXHIBITS

<TABLE>
<S>              <C>
EXHIBITS:

Exhibit A-1      Form of Legal Opinion of Zurab S. Kobiashvili, Esq.
Exhibit A-2      Form of Legal Opinion of Chamberlain, Hrdlicka, White, Williams & Martin
Exhibit B        Form of Legal Opinion of Mayer, Brown & Platt
Exhibit C        Form of Compliance Certificate
Exhibit D        Form of Assignment and Acceptance
Exhibit E        Form of Borrowing/Interest Election Request
Exhibit F        Form of Competitive Bid Quote Request
Exhibit G        Form of Notice of Competitive Bid Quote Request
Exhibit H        Form of Competitive Bid
Exhibit I        Form of Competitive Bid Accept/Reject Letter


SCHEDULES:

Schedule 2.1     Commitments
Schedule 3.7     Subsidiaries; Restricted Subsidiaries
Schedule 7.1     Liens
</TABLE>





                                       iv
<PAGE>   6


                                CREDIT AGREEMENT

         THIS CREDIT AGREEMENT, dated as of June 12, 1997, is among APACHE
CORPORATION, a Delaware corporation, the LENDERS (as defined below) party
hereto, MORGAN GUARANTY TRUST COMPANY, as Global Documentation Agent and U.S.
Syndication Agent, THE FIRST NATIONAL BANK OF CHICAGO, as U.S. Documentation
Agent, NATIONSBANK OF TEXAS, N.A., and UNION BANK OF SWITZERLAND, HOUSTON
AGENCY, as Co-Agents, and THE CHASE MANHATTAN BANK, as Global Administrative
Agent.

         The parties hereto agree as follows:

                                   ARTICLE I

                                  Definitions

         SECTION 1.1.    Defined Terms.  As used in this Agreement, the
following terms have the meanings specified below:

         "ABR", when used in reference to any Loan or Borrowing, refers to
whether such Loan, or the Loans comprising such Borrowing, are bearing interest
at a rate determined by reference to the Alternate Base Rate.

         "Accepting Lenders" is defined in Section 2.6(c).

         "Adjusted LIBO Rate" means, with respect to any Eurodollar Borrowing
for any Interest Period, an interest rate per annum (rounded upwards, if
necessary, to the next 1/16 of 1%) equal to (a) the LIBO Rate for such Interest
Period multiplied by (b) the Statutory Reserve Rate.

         "Administrative Questionnaire" means an Administrative Questionnaire
in a form supplied by the Global Administrative Agent.

         "Affiliate" means, with respect to a specified Person, another Person
that directly, or indirectly through one or more intermediaries, Controls or is
Controlled by or is under common Control with the Person specified.

         "Agents" means each of the Global Administrative Agent, the Global
Documentation Agent, the U.S. Syndication Agent, the U.S. Documentation Agent
and the Co-Agents.

         "Agreed Currency" is defined in Section 2.19(a).
<PAGE>   7


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

         "Alternate Base Rate" means, for any day, a rate per annum equal to
the greatest of (a) the Prime Rate in effect on such day and (b) the Federal
Funds Effective Rate in effect on such day plus  1/2 of 1%.  Any change in the
Alternate Base Rate due to a change in the Prime Rate or the Federal Funds
Effective Rate shall be effective from and including the effective date of such
change in the Prime Rate or the Federal Funds Effective Rate, respectively.

         "Annual Certificate of Extension" means a certificate of Borrower,
executed by an Authorized Officer and delivered to the Global Administrative
Agent, in a form acceptable to the Global Administrative Agent, which requests
an extension of the then scheduled Maturity Date pursuant to Section 2.6.

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

         "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.

         "Applicable Percentage" means, with respect to any Lender, the
percentage of the total Commitments represented by such Lender's Commitment.
If the Commitments have terminated or expired, the Applicable Percentages shall
be determined based upon the Commitments most recently in effect, giving effect
to any assignments.

         "Applicable Rate" means, for any day, with respect to any Eurodollar
Revolving Loan, or with respect to the Facility Fees payable hereunder, as the
case may be, the applicable rate per annum set forth below under the caption
"Eurodollar Margin" or "Facility Fee", as the case may be, based upon the
ratings by Moody's, S&P and D&P, respectively, applicable on such date to the
Index Debt:

<TABLE>
<CAPTION>
=============================================================================================================
                                                       Facility Fee (in basis     Eurodollar Margin (in basis
                 Index Debt Ratings:                           points)                      points)
- -------------------------------------------------------------------------------------------------------------
 <S>              <C>                                 <C>                        <C>
 Category 1:      A/A2                                          6.00                         16.50
- -------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                2
<PAGE>   8

<TABLE>
 <S>              <C>                                          <C>                          <C>
- -------------------------------------------------------------------------------------------------------------
 Category 2:      A-/A3                                          8.00                        17.00
- -------------------------------------------------------------------------------------------------------------
 Category 3:      BBB+/Baa1                                      9.00                        18.50
- -------------------------------------------------------------------------------------------------------------
 Category 4:      BBB/Baa2                                      12.00                        20.50
- -------------------------------------------------------------------------------------------------------------
 Category 5:      BBB-/Baa3                                     17.50                        25.00
- -------------------------------------------------------------------------------------------------------------
 Category 6:      < BBB-/Baa3                                   25.00                        50.00
=============================================================================================================
</TABLE>
         For purposes of the foregoing, (i) if either Moody's, S&P or D&P shall
not have in effect a rating for the Index Debt (other than by reason of the
circumstances referred to in the last sentence of this definition), then such
rating agency shall be deemed to have established a rating in Category 6; (ii)
if the ratings established or deemed to have been established by Moody's, S&P
and D&P for the Index Debt shall fall within different Categories, the
Applicable Rate shall be based on the highest two ratings, unless the highest
two ratings shall fall within different Categories in which case the Applicable
Rate shall be based on the lower of the highest two ratings; and (iii) if the
ratings established or deemed to have been established by Moody's, S&P and D&P
for the Index Debt shall be changed (other than as a result of a change in the
rating system of Moody's, S&P or D&P), such change shall be effective as of the
date on which it is first announced by the applicable rating agency.  Each
change in the Applicable Rate shall apply during the period commencing on the
effective date of such change and ending on the date immediately preceding the
effective date of the next such change.  If the rating system of Moody's, S&P
or D&P shall change, or if any such rating agency shall cease to be in the
business of rating corporate debt obligations, Borrower and the Lenders shall
negotiate in good faith to amend this definition to reflect such changed rating
system or the unavailability of ratings from such rating agency and, pending
the effectiveness of any such amendment, the Applicable Rate shall be
determined by reference to the rating most recently in effect prior to such
change or cessation.

         "Assignment and Acceptance" means an assignment and acceptance entered
into by a Lender and an assignee (with the consent of any party whose consent
is required by Section 10.4), and accepted by the Global Administrative Agent,
in substantially the form of Exhibit D or any other form approved by the Global
Administrative Agent.

         "Australian Administrative Agent" means Citisecurities Limited (ACN
008 489 610) in its capacity as Australian administrative agent for the lenders
party to the Australian Credit Agreement and any successor thereto.





                                       3
<PAGE>   9



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

         "Australian Credit Agreement" means that certain Credit Agreement of
even date herewith among the Australian Borrower, the Australian Lenders, the
Global Administrative Agent, the Global Documentation Agent, the Australian
Administrative Agent, Bank of America National Trust and Savings Association,
Sydney Branch (ARBN 064 874 531), as Australian documentation agent, and The
Chase Manhattan Bank (ARBN 074 112 011), as Australian syndication agent, 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, and the agreement with
respect to fees, 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 Borrower, and any
officer or employee of Borrower specified as such to the Global Administrative
Agent in writing by any of the aforementioned officers of Borrower.

         "Availability Period" means the period from and including the Global
Effective Date to but excluding the earlier of the Maturity Date and the date
of termination of the Commitments.

         "Board" means the Board of Governors of the Federal Reserve System of
the United States of America.

         "Borrower" means Apache Corporation, a Delaware corporation.

         "Borrowing" means (a) Revolving Loans of the same Type, made,
converted or continued on the same date and, in the case of Eurodollar Loans,
as to which a single Interest Period is in effect or (b) a Competitive Loan or
group of Competitive Loans of the same Type made on the same date and as to
which a single Interest Period is in effect.

         "Borrowing Request" means a request by Borrower for a Revolving
Borrowing in accordance with Section 2.3, in substantially the form of Exhibit
E or any other form approved by the Global Administrative Agent.





                                       4

<PAGE>   10


         "Business Day" means any day that is not a Saturday, Sunday or other
day on which commercial banks in New York City are authorized or required by
law to remain closed; provided that, when used in connection with a Eurodollar
Loan, the term "Business Day" shall also exclude any day on which banks are not
open for dealings in dollar deposits in the London interbank market.

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

         "Canadian Borrower" means Apache Canada.

         "Canadian Credit Agreement" means that certain Credit Agreement of
even date herewith among the Canadian Borrower, the Canadian Lenders, the
Global Administrative Agent, the Global Documentation Agent, the Canadian
Administrative Agent, Royal Bank of Canada, as Canadian documentation agent,
and The Chase Manhattan Bank of Canada, as Canadian syndication agent, 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, and the agreement with
respect to fees, 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.

         "Capital" means the consolidated shareholder's equity of Borrower and
its Subsidiaries plus the consolidated Debt of Borrower and its Subsidiaries.

         "CERCLA" means the Comprehensive Environmental Response, Compensation
and Liability Act of 1980, 42 U.S.C.  Section  9601, et. seq., as amended from
time to time.

         "Change in Law" means (a) the adoption of any law, rule or regulation
after the date of this Agreement, (b) any change in any law, rule or regulation
or in the interpretation or application thereof by any Governmental Authority
after the date of this Agreement or (c) compliance by any Lender (or, for
purposes of Section 2.16(b), by any lending office of such Lender or by such
Lender's holding company, if any) with any request, guideline or directive
(whether or not having the force of law) of any Governmental Authority made or
issued after the date of this Agreement.





                                       5
<PAGE>   11



         "Class", when used in reference to any Loan or Borrowing, refers to
whether such Loan, or the Loans comprising such Borrowing, are Revolving Loans
or Competitive Loans.

         "Co-Agents" means NationsBank of Texas, N.A., and Union Bank of
Switzerland, Houston Agency, in their capacity as co-agents for the Lenders
hereunder.

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

         "Combined Commitments" means, with respect to each Combined Lender,
the commitment of such Combined Lender to make Revolving Loans (or in the case
of Australian Lenders or Canadian Lenders, "Loans" (as defined in the
Australian Credit Agreement and the Canadian Credit Agreement, respectively)),
expressed as an amount representing the maximum aggregate amount of such
Combined Lender's Revolving Credit Exposure (or in the case of Australian
Lenders or Canadian Lenders, "Credit Exposure" (as defined in the Australian
Credit Agreement and the Canadian Credit Agreement, respectively)) under the
Combined Credit Agreements, as such commitment may be reduced, increased or
terminated from time to time pursuant to the Global Loan Documents.  The
initial amount of each Combined Lender's Commitment is set forth on Schedule
2.1 to the applicable Combined Credit Agreement, or in a Assignment and
Acceptance (as defined in this Agreement and the Canadian Credit Agreement) or
in a Substitution Certificate (as defined in the Australian Credit Agreement)
or pursuant to which such Combined Lender shall have assumed its Combined
Commitment, as applicable.  The initial aggregate amount of the Combined
Lenders' Combined Commitments is $1,000,000,000.

         "Combined Credit Agreements" means this Agreement, the Australian
Credit Agreement and the Canadian Credit Agreement.

         "Combined Lenders" means the Lenders hereunder, the Australian Lenders
and the Canadian Lenders.

         "Combined Loan Documents" means the Loan Documents, the Australian
Loan Documents and the Canadian Loan Documents.

         "Combined Loans" means the loans made by the Combined Lenders to
Borrower, Australian Borrower and Canadian Borrower pursuant to the Combined
Loan Documents.

         "Combined Required Lenders" means Combined Lenders having in the
aggregate 51% of the aggregate total Combined Commitments under the Combined
Loan Documents, or, if the Combined Commitments have been terminated, Combined
Lenders holding 51% of the aggregate unpaid principal amount of the outstanding
Combined Loans under the Combined Loan Documents.





                                       6
<PAGE>   12


         "Commitment" means, with respect to each Lender, the commitment of
such Lender to make Revolving Loans, expressed as an amount representing the
maximum aggregate amount of such Lender's Revolving Credit Exposure hereunder,
as such commitment may be (a) reduced from time to time pursuant to Section
2.8, (b) reduced or increased from time to time pursuant to assignments by or
to such Lender pursuant to Section 10.4 and (c) terminated pursuant to Sections
8.2 or 8.3.  The initial amount of each Lender's Commitment is set forth on
Schedule 2.1, or in the Assignment and Acceptance pursuant to which such Lender
shall have assumed its Commitment, as applicable.  The initial aggregate amount
of the Lenders' Commitments is $700,000,000.

         "Competitive Bid" means an offer by a Lender to make a Competitive
Loan in accordance with Section 2.4, in substantially the form of Exhibit H or
any other form approved by the Global Administrative Agent.

         "Competitive Bid Accept/Reject Letter" means a letter in substantially
the form of Exhibit I or any other form approved by the Global Administrative
Agent.

         "Competitive Bid Rate" means, with respect to any Competitive Bid, the
Margin or the Fixed Rate, as applicable, offered by the Lender making such
Competitive Bid.

         "Competitive Bid Request" means a request by Borrower for Competitive
Bids in accordance with Section 2.4, in substantially the form of Exhibit F or
any other form approved by the Global Administrative Agent.

         "Competitive Loan" means a Loan made pursuant to Section 2.4.

         "Consolidated Tangible Net Worth" means (i) the consolidated
shareholder's equity of Borrower and its Subsidiaries (determined in accordance
with GAAP), less (ii) the amount of consolidated intangible assets of Borrower
and its Subsidiaries, plus (iii) the aggregate amount of any non-cash write
downs, on a consolidated basis, by Borrower and its Subsidiaries during the
term hereof.

         "Control" means the possession, directly or indirectly, of the power
to direct or cause the direction of the management or policies of a Person,
whether through the ability to exercise voting power, by contract or otherwise.
"Controlling" and "Controlled" have meanings correlative thereto.

         "Controlled Group" means all members of a controlled group of
corporations and all members of a controlled group of trades or businesses
(whether or not incorporated) under common control which, together with
Borrower, are treated as a single employer under Section 414 (b) or 414 (c) of
the Internal Revenue Code or Section 4001 of ERISA.





                                       7
<PAGE>   13



         "Debt" of any Person means indebtedness, including capital leases,
shown as debt on a consolidated balance sheet of such Person prepared in
accordance with GAAP.

         "Declining Lenders" is defined in Section 2.6(c).

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

         "dollars" or "$" refers to lawful money of the United States of
America.

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

         "Environmental Laws" means all applicable federal, state or local
statutes, laws, ordinances, codes, rules and regulations (including consent
decrees and administrative orders) relating to public health and safety and
protection of the environment.

         "Environmental Liability" means any liability, contingent or otherwise
(including any liability for damages, costs of environmental remediation,
fines, penalties or indemnities), of Borrower or any Subsidiary directly or
indirectly resulting from or based upon (a) violation of any Environmental Law,
(b) the generation, use, handling, transportation, storage, treatment or
disposal of any Hazardous Materials, (c) exposure to any Hazardous Materials,
(d) the release or threatened release of any Hazardous Materials into the
environment or (e) any contract, agreement or other consensual arrangement
pursuant to which liability is assumed or imposed with respect to any of the
foregoing.

         "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended, and any successor statute of similar import, together with the
regulations thereunder, in each case as in effect from time to time.

         "ERISA Affiliate" means any trade or business (whether or not
incorporated) that, together with Borrower, is treated as a single employer
under Section 414(b) or (c) of the Code or, solely for purposes of Section 302
of ERISA and Section 412 of the Code, is treated as a single employer under
Section 414 of the Code.

         "ERISA Event" means (a) any "reportable event", as defined in Section
4043 of ERISA or the regulations issued thereunder with respect to a Plan
(other than an event for which the 30-day notice period is waived); (b) the
existence with respect to any Plan of an "accumulated funding deficiency" (as
defined in Section 412 of the Code or Section 302 of ERISA), whether or not
waived; (c) the filing pursuant to Section 412(d) of the Code or Section 303(d)
of ERISA of an application for a waiver of the minimum funding standard with
respect to any Plan; (d) the





                                       8
<PAGE>   14


incurrence by Borrower or any of its ERISA Affiliates of any liability under
Title IV of ERISA with respect to the termination of any Plan; (e) the receipt
by Borrower or any ERISA Affiliate from the PBGC or a plan administrator of any
notice relating to an intention to terminate any Plan or Plans or to appoint a
trustee to administer any Plan; (f) the incurrence by Borrower or any of its
ERISA Affiliates of any liability with respect to the withdrawal or partial
withdrawal from any Plan or Multiemployer Plan; or (g) the receipt by Borrower
or any ERISA Affiliate of any notice, or the receipt by any Multiemployer Plan
from Borrower or any ERISA Affiliate of any notice, concerning the imposition
of Withdrawal Liability or a determination that a Multiemployer Plan is, or is
expected to be, insolvent or in reorganization, within the meaning of Title IV
of ERISA.

         "Eurodollar", when used in reference to any Loan or Borrowing, refers
to whether such Loan, or the Loans comprising such Borrowing, are bearing
interest at a rate determined by reference to the Adjusted LIBO Rate (or, in
the case of a Competitive Loan, the LIBO Rate).

         "Event of Default" has the meaning assigned to such term in Article
VIII.

         "Excluded Taxes" means, with respect to any Agent, any Lender or any
other recipient of any payment to be made by or on account of any obligation of
Borrower hereunder, (a) income or franchise taxes imposed on (or measured by)
its net income by the United States of America, or by the jurisdiction under
the laws of which such recipient is organized or in which its principal office
is located or, in the case of any Lender, in which its applicable lending
office is located, (b) any branch profits taxes imposed by the United States of
America or any similar tax imposed by any other jurisdiction in which Borrower
is located and (c) in the case of a Foreign Lender (other than an assignee
pursuant to a request by Borrower under Section 2.18(b)), any withholding tax
that is imposed on amounts payable to such Foreign Lender at the time such
Foreign Lender becomes a party to this Agreement (or designates a new lending
office) or is attributable to such Foreign Lender's failure to comply with
Section 2.16(e), except to the extent that such Foreign Lender (or its
assignor, if any) was entitled, at the time of designation of a new lending
office (or assignment), to receive additional amounts from Borrower with
respect to such withholding tax pursuant to Section 2.16(a).

         "Existing Global Credit Facilities" means (i) that certain Fourth
Amended and Restated Credit Agreement, dated as October 31, 1996, among
Borrower, the lenders party thereto, 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, (ii) that certain Credit Agreement, dated as October 31, 1996, among
the Australian Borrower, the lenders party thereto, The First National Bank of
Chicago, as global administrative agent, Chase Securities Australia Limited
(ACN 002 888 011), as Australian administrative agent, First Chicago Capital
Markets, Inc., as arranger, and Chase Securities Inc., as arranger, and (iii)
that certain Credit Agreement, dated as October 31, 1996, among the Canadian
Borrower, the lenders party thereto, The First National Bank of Chicago, as
global administrative agent,





                                       9
<PAGE>   15


Bank of Montreal, as Canadian administrative agent, First Chicago Capital
Markets, Inc., as arranger, and Chase Securities Inc., as arranger.

         "Facility Fee" is defined in Section 2.11.

         "Federal Funds Effective Rate" means, for any day, the weighted
average (rounded upwards, if necessary, to the next 1/100 of 1%) of the rates
on overnight Federal funds transactions with members of the Federal Reserve
System arranged by Federal funds brokers, as published on the next succeeding
Business Day by the Federal Reserve Bank of New York, or, if such rate is not
so published for any day that is a Business Day, the average (rounded upwards,
if necessary, to the next 1/100 of 1%) of the quotations for such day for such
transactions received by the Global Administrative Agent from three Federal
funds brokers of recognized standing selected by it.

         "Fixed Rate" means, with respect to any Competitive Loan (other than a
Eurodollar Competitive Loan), the fixed rate of interest per annum (expressed
as a decimal to no more than four (4) decimal places) specified by the Lender
making such Competitive Loan in its related Competitive Bid.

         "Fixed Rate Loan" means a Competitive Loan bearing interest at a Fixed
Rate.

         "Foreign Lender" means any Lender that is not organized under the laws
of, or resident, in the United States.  For purposes of this definition, the
United States of America, each State thereof and the District of Columbia shall
be deemed to constitute a single jurisdiction.

         "GAAP" means generally accepted accounting principles as in effect
from time to time, applied on a basis consistent with the most recent financial
statements of Borrower and its Subsidiaries delivered to the Lenders pursuant
hereto.

         "Global Administrative Agent" means The Chase Manhattan Bank, in its
capacity as global administrative agent for the Combined Lenders.

         "Global Documentation Agent" means Morgan Guaranty Trust Company, in
its capacity as global documentation agent for the Lenders hereunder.

         "Global Effective Date" means a date agreed upon by Borrower and the
Global Administrative Agent as the date on which the conditions specified in
Section 4.1 of each Combined Credit Agreement are satisfied (or waived in
accordance with Section 10.2 of each Combined Credit Agreement).





                                       10
<PAGE>   16


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

         "Governmental Authority" means the government of the United States of
America, any other nation or any political subdivision thereof, whether state
or local, and any agency, authority, instrumentality, regulatory body, court,
central bank or other entity exercising executive, legislative, judicial,
taxing, regulatory or administrative powers or functions of or pertaining to
government.

         "Hazardous Material" means (a) any "hazardous substance," as defined
by CERCLA; (b) any "hazardous waste," as defined by the Resource Conservation
and Recovery Act; or (c) any pollutant or contaminant or hazardous, dangerous
or toxic chemical, material or substance within the meaning of any other
Environmental Law.

         "Indebtedness" of any Person means all (i) Debt, and (ii) guaranties
or other contingent obligations in respect of the Debt of any other Person.

         "Indemnified Taxes" means Taxes other than Excluded Taxes.

         "Index Debt" means senior, unsecured, non-credit enhanced, long-term
indebtedness for borrowed money of Borrower that is not guaranteed by any other
Person or subject to any other credit enhancement.

         "Interest Election Request" means a request by Borrower to convert or
continue a Revolving Borrowing in accordance with Section 2.7, in substantially
the form of Exhibit E or any other form approved by the Global Administrative
Agent.

         "Interest Payment Date" means (a) with respect to any ABR Loan, the
last day of each March, June, September and December, (b) with respect to any
Eurodollar Loan, the last day of the Interest Period applicable to the
Borrowing of which such Loan is a part and, in the case of a Eurodollar
Borrowing with an Interest Period of more than three (3) months' duration, each
day prior to the last day of such Interest Period that occurs at intervals of
three (3) months' duration after the first day of such Interest Period, and (c)
with respect to any Fixed Rate Loan, the last day of the Interest Period
applicable to the Borrowing of which such Loan is a part and, in the case of a
Fixed Rate Borrowing with an Interest Period of more than 90 days' duration
(unless otherwise specified in the applicable Competitive Bid Request), each
day prior to the last day of such Interest Period that occurs at intervals of
90 days' duration after the first day of such





                                       11
<PAGE>   17


Interest Period, and any other dates that are specified in the applicable
Competitive Bid Request as Interest Payment Dates with respect to such
Borrowing.

         "Interest Period" means (a) with respect to any Eurodollar Borrowing,
the period commencing on the date of such Borrowing and ending on the
numerically corresponding day, or, with the consent of the Global
Administrative Agent, such other day, in the calendar month that is one, two,
three or six months (or, with the consent of each Lender, nine or twelve
months) thereafter, as Borrower may elect, (b) with respect to any Fixed Rate
Borrowing, the period (which shall not be less than seven (7) days or more than
360 days) commencing on the date of such Borrowing and ending on the date
specified in the applicable Competitive Bid Request; provided, that (i) if any
Interest Period would end on a day other than a Business Day, such Interest
Period shall be extended to the next succeeding Business Day unless, in the
case of a Eurodollar Borrowing only, such next succeeding Business Day would
fall in the next calendar month, in which case such Interest Period shall end
on the next preceding Business Day and (ii) any Interest Period pertaining to a
Eurodollar Borrowing that commences on the last Business Day of a calendar
month (or on a day for which there is no numerically corresponding day in the
last calendar month of such Interest Period) shall end on the last Business Day
of the last calendar month of such Interest Period.  For purposes hereof, the
date of a Borrowing initially shall be the date on which such Borrowing is made
and thereafter shall be the effective date of the most recent conversion or
continuation of such Borrowing.

         "Judgment Currency" is defined in Section 2.19(b).

         "Lenders" means the Persons listed on Schedule 2.1 and any other
Person that shall have become a party hereto pursuant to an Assignment and
Acceptance, other than any such Person that ceases to be a party hereto
pursuant to an Assignment and Acceptance.

         "LIBO Rate" means, with respect to any Eurodollar Borrowing for any
Interest Period, the rate appearing on Page 3750 of the Telerate Service (or on
any successor or substitute page of such Service, or any successor to or
substitute for such Service, providing rate quotations comparable to those
currently provided on such page of such Service, as reasonably determined by
the Global Administrative Agent and the Borrower from time to time for purposes
of providing quotations of interest rates applicable to dollar deposits in the
London interbank market) at approximately 11:00 a.m., London time, two Business
Days prior to the commencement of such Interest Period, as the rate for dollar
deposits with a maturity comparable to such Interest Period.  In the event that
such rate is not available at such time for any reason, then the "LIBO Rate"
with respect to such Eurodollar Borrowing for such Interest Period shall be the
rate at which dollar deposits of $5,000,000 and for a maturity comparable to
such Interest Period are offered by the principal London office of the Global
Administrative Agent in immediately available funds in the London interbank
market at approximately 11:00 a.m., London time, two Business Days prior to the
commencement of such Interest Period.





                                       12
<PAGE>   18



         "Lien" means any mortgage, pledge, lien, encumbrance, charge, or
security interest of any kind, granted or created to secure Indebtedness;
provided, however, that, with respect to any prohibitions of Liens on Property,
the following transactions shall not be deemed to create a Lien to secure
Indebtedness; (i) production payments and (ii) liens required by statute and
created in favor of U.S. governmental entities to secure partial, progress,
advance, or other payments intended to be used primarily in connection with air
or water pollution control.

         "Loan Document" means this Agreement, any Borrowing Request, any
Interest Election Request, any Competitive Bid Quote Request, any Notice of
Competitive Bid Quote Request, any Competitive Bid, any Competitive Bid
Accept/Reject Letter, any Annual Certificate of Extension, any Assignment and
Acceptance, any election notice, the agreement with respect to fees described
in Section 2.11(b), and each other agreement, document or instrument delivered
by Borrower or any other Person in connection with this Agreement, as such may
be amended from time to time.

         "Loans" means the loans made by the Lenders to Borrower pursuant to
this Agreement.  

         "Margin" means, with respect to any Competitive Loan
bearing interest at a rate based on the LIBO Rate, the marginal rate of
interest, if any, to be added to or subtracted from the LIBO Rate to determine
the rate of interest applicable to such Loan, as specified by the Lender making
such Loan in its related Competitive Bid.

         "Material Adverse Effect" means, as to any matter, that such matter
could reasonably be expected to materially and adversely affect the assets,
business, properties, condition (financial or otherwise) of Borrower and its
Subsidiaries taken as a whole.  No matter shall be considered to result, or be
expected to result, in a Material Adverse Effect unless such matter causes
Borrower and its Subsidiaries, on a consolidated basis, to suffer a loss or
incur a cost equal to at least ten percent (10%) of Borrower's Consolidated
Tangible Net Worth.

         "Maturity Date" means the Original Maturity Date, or such other later
date as may result from any extension requested by Borrower and consented to by
the Lenders pursuant to Section 2.6.

         "Moody's" means Moody's Investors Service, Inc.

         "Multiemployer Plan" means a multiemployer plan as defined in Section
4001(a)(3) of ERISA.

         "Notice of Competitive Bid Request" means a notice of request by
Borrower for Competitive Bids sent by the Global Administrative Agent to each
Lender in accordance with Section 2.4, in substantially the form of Exhibit G
or any other form approved by the Global Administrative Agent.





                                       13
<PAGE>   19



         "Obligations" means, at any time, the sum of (i) the outstanding
principal amount of any Loans plus (ii) all accrued and unpaid interest and
Facility Fees plus (iii) all other obligations of Borrower or any Subsidiary to
any Lender or any Agent, whether or not contingent, arising under or in
connection with any of the Loan Documents.

         "Original Maturity Date" means June 12, 2002.

         "Other Currency" is defined in Section 2.19(a).

         "Other Taxes" means any and all present or future stamp or documentary
taxes or any other excise or property taxes, charges or similar levies arising
from any payment made hereunder or from the execution, delivery or enforcement
of, or otherwise with respect to, this Agreement.

         "PBGC" means the Pension Benefit Guaranty Corporation referred to and
defined in ERISA and any successor entity performing similar functions.

         "Pension Plan" means a "pension plan," as such term is defined in
Section 3(2) of ERISA, which is subject to Title IV of ERISA (other than a
multiemployer plan as defined in Section 4001(a)(3) of ERISA), and to which a
Borrower or any corporation, trade or business that is, along with a Borrower,
a member of a Controlled Group, may have liability, including any liability by
reason of having been a substantial employer within the meaning of Section 4063
of ERISA at any time during the preceding five years, or by reason of being
deemed to be a contributing sponsor under Section 4069 of ERISA.

         "Person" means any natural person, corporation, limited liability
company, joint venture, partnership, firm, association, trust, government,
governmental agency or any other entity, whether acting in an individual,
fiduciary or other capacity.

         "Plan"  means any employee pension benefit plan (other than a
Multiemployer Plan) subject to the provisions of Title IV of ERISA or Section
412 of the Code or Section 302 of ERISA, and in respect of which Borrower or
any ERISA Affiliate is (or, if such plan were terminated, would under Section
4069 of ERISA be deemed to be) an "employer" as defined in Section 3(5) of
ERISA.

         "Prime Rate" means the rate of interest per annum publicly announced
from time to time by The Chase Manhattan Bank as its prime rate in effect at
its principal office in New York City which rate may not be the lowest rate
offered; each change in the Prime Rate shall be effective from and including
the date such change is publicly announced as being effective.

         "Property" means (i) any property owned or leased by Borrower or any
Subsidiary, or any interest of Borrower or any Subsidiary in property, which is
considered by Borrower to be capable





                                       14
<PAGE>   20


of producing oil, gas, or minerals in commercial quantities, (ii) any interest
of Borrower or any Subsidiary in, any refinery, processing or manufacturing
plant owned or leased by Borrower or any manufacturing plant owned or leased by
Borrower or any Subsidiary, (iii) any interest of Borrower or any Subsidiary
in, all present and future oil, gas, other liquid and gaseous hydrocarbons, and
other minerals now or hereafter produced from any other Property or to which
Borrower or any Subsidiary may be entitled as a result of its ownership of any
Property, and (iv) all real and personal assets owned or leased by Borrower or
any Subsidiary used in the drilling, gathering, processing, transportation, or
marketing of any oil, gas, and other hydrocarbons or minerals, except (a) any
such real or personal assets related thereto employed in transportation,
distribution or marketing or (b) any interest of Borrower or any Subsidiary in,
any refinery, processing or manufacturing plant, or portion thereof, which
property described in clauses (a) or (b), in the opinion of the Board of
Directors of Borrower, is not a principal plant or principal facility in
relation to the activities of Borrower and its Subsidiaries taken as a whole.

         "Register" has the meaning set forth in Section 10.4.

         "Regulation U" means any of Regulations G, T, U or X of the Board from
time to time in effect and shall include any successor or other regulations or
official interpretations of said Board 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.

         "Related Parties" means, with respect to any specified Person, such
Person's Affiliates and the respective directors, officers, employees, agents
and advisors of such Person and such Person's Affiliates.

         "Replacement Lenders" is defined in Section 2.6(c)(ii).

         "Required Lenders" means Lenders having in the aggregate 51% of the
aggregate total Commitments, or, if the Commitments have been terminated,
Lenders holding 51% of the aggregate unpaid principal amount of the outstanding
Obligations.

         "Resource Conservation and Recovery Act" means the Resource
Conservation and Recovery Act, 42 U.S.C. Section 690, et seq., as amended from
time to time.

         "Restricted Subsidiary" means any Subsidiary of Borrower that owns any
asset representing or consisting of an entitlement to production from, or other
interest in, reserves of oil, gas or other minerals in place located in the
United States, Canada or Australia or is otherwise designated by Borrower in
writing to the Global Administrative Agent.





                                       15
<PAGE>   21


         "Revolving Credit Exposure" means, with respect to any Lender at any
time, the sum of the outstanding principal amount of such Lender's Revolving
Loans at such time.

         "Revolving Loan" means a Loan made pursuant to Section 2.3.

         "S&P" means Standard & Poor's and any successor thereto that is a
nationally-recognized rating agency.

         "Stated Maturity Date" means, with respect to any Competitive Bid
Loan, the last day of any Interest Period.

         "Statutory Reserve Rate" means a fraction (expressed as a decimal),
the numerator of which is the number one and the denominator of which is the
number one minus the aggregate of the applicable maximum reserve percentages
(including any basic, marginal, special, emergency or supplemental reserves)
expressed as a decimal established by the Board to which the Global
Administrative Agent is subject with respect to the Adjusted LIBO Rate, for
eurocurrency funding (currently referred to as "Eurocurrency Liabilities" in
Regulation D of the Board).  Such reserve percentages shall include those
imposed pursuant to such Regulation D.  Eurodollar Loans shall be deemed to
constitute eurocurrency funding and to be subject to such reserve requirements
without benefit of or credit for proration, exemptions or offsets that may be
available from time to time to any Lender under such Regulation D or any
comparable regulation.  The Statutory Reserve Rate shall be adjusted
automatically on and as of the effective date of any change in any reserve
percentage.

         "subsidiary" means, with respect to any Person, any corporation or
other similar entity of which more than 50% of the outstanding capital stock
(or other equity) having ordinary voting power to elect a majority of the Board
of Directors of such corporation or entity (irrespective of whether or not at
the time capital stock or any other class or classes of such corporation or
entity shall or might have voting power upon the occurrence of any contingency)
is at the time directly or indirectly owned by such Person.

         "Subsidiary" means any subsidiary of Borrower; provided, however, that
in all events the following Persons shall not be deemed to be Subsidiaries of
Borrower or any of its Subsidiaries: Producers Energy Marketing, LLC, a
Delaware limited liability company, 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, 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.

         "Taxes" means any and all present or future taxes, levies, imposts,
duties, deductions, charges or withholdings imposed by any Governmental
Authority.





                                       16
<PAGE>   22



         "Transactions" means the execution, delivery and performance by
Borrower of this Agreement and the other Loan Documents, the borrowing of Loans
and the use of the proceeds thereof.

         "Type", when used in reference to any Loan or Borrowing, refers to
whether the rate of interest on such Loan, or on the Loans comprising such
Borrowing, is determined by reference to the Adjusted LIBO Rate, the Alternate
Base Rate or, in the case of a Competitive Loan or Borrowing, the LIBO Rate or
a Fixed Rate.

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

         "Unrestricted Subsidiary" means any Subsidiary of Borrower that is not
a Restricted Subsidiary.

         "U.S. Documentation Agent" means The First National Bank of Chicago,
in its capacity as U.S. documentation agent for the Lenders hereunder.

         "U.S. Syndication Agent" means Morgan Guaranty Trust Company, in its
capacity as U.S. syndication agent for the Lenders hereunder.

         "Welfare Plan" means a "welfare plan," as such term is defined in 
Section3(1) of ERISA.

         "Withdrawal Liability" means liability to a Multiemployer Plan as a
result of a complete or partial withdrawal from such Multiemployer Plan, as
such terms are defined in Part I of Subtitle E of Title IV of ERISA.

         SECTION 1.2.    Classification of Loans and Borrowings.  For
purposes of this Agreement, Loans may be classified and referred to by Class
(e.g., a "Revolving Loan") or by Type (e.g., a "Eurodollar Loan") or by Class
and Type (e.g., a "Eurodollar Revolving Loan").  Borrowings also may be
classified and referred to by Class (e.g., a "Revolving Borrowing") or by Type
(e.g., a "Eurodollar Borrowing") or by Class and Type (e.g., a "Eurodollar
Revolving Borrowing").

         SECTION 1.3.    Terms Generally.  The definitions of terms herein
shall apply equally to the singular and plural forms of the terms defined.
Whenever the context may require, any pronoun shall include the corresponding
masculine, feminine and neuter forms.  The words "include", "includes" and
"including" shall be deemed to be followed by the phrase "without limitation".
The word "will" shall be construed to have the same meaning and effect as the
word "shall".  Unless the context requires otherwise (a) any definition of or
reference to any agreement, instrument or other document herein shall be
construed as referring to such agreement, instrument





                                       17
<PAGE>   23


or other document as from time to time amended, supplemented or otherwise
modified (subject to any restrictions on such amendments, supplements or
modifications set forth herein), (b) any reference herein to any Person shall
be construed to include such Person's successors and assigns, (c) the words
"herein", "hereof" and "hereunder", and words of similar import, shall be
construed to refer to this Agreement in its entirety and not to any particular
provision hereof, (d) all references herein to Articles, Sections, Exhibits and
Schedules shall be construed to refer to Articles and Sections of, and Exhibits
and Schedules to, this Agreement and (e) the words "asset" and "property" shall
be construed to have the same meaning and effect and to refer to any and all
tangible and intangible assets and properties, including cash, securities,
accounts and contract rights.

         SECTION 1.4.    Accounting Terms; GAAP.  Except as otherwise
expressly provided herein, all terms of an accounting or financial nature shall
be construed in accordance with GAAP, as in effect from time to time; provided
that, if Borrower notifies the Global Administrative Agent that Borrower
requests an amendment to any provision hereof to eliminate the effect of any
change occurring after the date hereof in GAAP or in the application thereof on
the operation of such provision (or if the Global Administrative Agent notifies
Borrower that the Required Lenders request an amendment to any provision hereof
for such purpose), regardless of whether any such notice is given before or
after such change in GAAP or in the application thereof, then such provision
shall be interpreted on the basis of GAAP as in effect and applied immediately
before such change shall have become effective until such notice shall have
been withdrawn or such provision amended in accordance herewith.

                                   ARTICLE II

                                  The Credits

         SECTION 2.1.    Commitments.  Subject to the terms and conditions
set forth herein, each Lender agrees to make Revolving Loans in U.S. Dollars to
Borrower from time to time during the Availability Period in an aggregate
principal amount that will not result in (a) such Lender's Revolving Credit
Exposure exceeding such Lender's Commitment or (b) the sum of the total
Revolving Credit Exposures plus the aggregate principal amount of outstanding
Competitive Loans exceeding the total Commitments.  Within the foregoing limits
and subject to the terms and conditions set forth herein, Borrower may borrow,
prepay and reborrow Revolving Loans.

         SECTION 2.2.    Loans and Borrowings.

         (a)     Each Revolving Loan shall be made as part of a Borrowing
consisting of Revolving Loans made by the Lenders ratably in accordance with
their respective Commitments.  Each Competitive Loan shall be made in
accordance with the procedures set forth in Section 2.4.  The failure of any
Lender to make any Loan required to be made by it shall not relieve any other





                                       18
<PAGE>   24


Lender of its obligations hereunder; provided that the Commitments and
Competitive Bids of the Lenders are several and no Lender shall be responsible
for any other Lender's failure to make Loans as required.

         (b)     Subject to Section 2.13, (i) each Revolving Borrowing shall be
comprised entirely of ABR Loans or Eurodollar Loans as Borrower may request in
accordance herewith, and (ii) each Competitive Borrowing shall be comprised
entirely of Eurodollar Loans or Fixed Rate Loans as Borrower may request in
accordance herewith.  Each Lender at its option may make any Eurodollar Loan by
causing any domestic or foreign branch or Affiliate of such Lender to make such
Loan; provided that any exercise of such option shall not affect the obligation
of Borrower to repay such Loan in accordance with the terms of this Agreement.

         (c)     At the commencement of each Interest Period for any Eurodollar
Revolving Borrowing, such Borrowing shall be in an aggregate amount that is an
integral multiple of $1,000,000 and not less than $5,000,000 (including any
continuation or conversion of existing Revolving Loans made in connection
therewith).  At the time that each ABR Revolving Borrowing is made, such
Borrowing shall be in an aggregate amount that is an integral multiple of
$1,000,000 and not less than $5,000,000 (including any continuation or
conversion of existing Revolving Loans made in connection therewith); provided
that an ABR Revolving Borrowing may be in an aggregate amount that is equal to
the entire unused balance of the total Commitments.  Each Competitive Borrowing
shall be in an aggregate amount that is an integral multiple of $1,000,000 and
not less than $5,000,000.  Borrowings of more than one Type and Class may be
outstanding at the same time; provided that there shall not at any time be more
than a total of ten (10) Eurodollar Revolving Borrowings outstanding.

         (d)     Notwithstanding any other provision of this Agreement,
Borrower shall not be entitled to request, or to elect to convert or continue,
any Borrowing if the Interest Period requested with respect thereto would end
after the Maturity Date.

         SECTION 2.3.    Requests for Revolving Borrowings.   To request a
Revolving Borrowing, Borrower shall notify the Global Administrative Agent of
such request by telephone (a) in the case of a Eurodollar Borrowing, not later
than 1:00 p.m., New York City time, three Business Days before the date of the
proposed Borrowing or (b) in the case of an ABR Borrowing, not later than 11:00
a.m., New York City time, on the date of the proposed Borrowing.  Each such
telephonic Borrowing Request shall be irrevocable and shall be confirmed
promptly by hand delivery or telecopy to the Global Administrative Agent of a
written Borrowing Request in a form approved by the Global Administrative Agent
and signed by Borrower.  Each such telephonic and written Borrowing Request
shall specify the following information in compliance with Section 2.2:

                 (i)     the aggregate amount of the requested Borrowing;





                                       19
<PAGE>   25


                 (ii)    the date of such Borrowing, which shall be a
         Business Day;

                 (iii)   whether such Borrowing is to be an ABR Borrowing
         or a Eurodollar Borrowing; and

                 (iv)    in the case of a Eurodollar Borrowing, the
         initial Interest Period to be applicable thereto, which shall be a
         period contemplated by the definition of the term "Interest Period".

If no election as to the Type of Revolving Borrowing is specified, then the
requested Revolving Borrowing shall be an ABR Borrowing.  If no Interest Period
is specified with respect to any requested Eurodollar Revolving Borrowing, then
Borrower shall be deemed to have selected an Interest Period of one month's
duration.  Promptly following receipt of a Borrowing Request in accordance with
this Section, the Global Administrative Agent shall advise each Lender of the
details thereof and of the amount of such Lender's Loan to be made as part of
the requested Borrowing.

         SECTION 2.4.    Competitive Bid Procedure.

         (a)     Subject to the terms and conditions set forth herein, from
time to time during the Availability Period, Borrower may request Competitive
Bids and may (but shall not have any obligation to) accept Competitive Bids and
borrow Competitive Loans; provided that the sum of the total Revolving Credit
Exposures plus the aggregate principal amount of outstanding Competitive Loans
at any time shall not exceed the total Commitments.  To request Competitive
Bids, Borrower shall notify the Global Administrative Agent of such request by
telephone, in the case of a Eurodollar Borrowing, not later than noon, New York
City time, four Business Days before the date of the proposed Borrowing and, in
the case of a Fixed Rate Borrowing, not later than 10:00 a.m., New York City
time, one Business Day before the date of the proposed Borrowing; provided that
Borrower may submit up to (but not more than) five (5) Competitive Bid Requests
on the same day, but a Competitive Bid Request shall not be made within five
Business Days after the date of any previous Competitive Bid Request, unless
any and all such previous Competitive Bid Requests shall have been withdrawn or
all Competitive Bids received in response thereto rejected.  Each such
telephonic Competitive Bid Request shall be confirmed promptly by hand delivery
or telecopy to the Global Administrative Agent of a written Competitive Bid
Request and signed by Borrower.  Each such telephonic and written Competitive
Bid Request shall specify the following information in compliance with Section
2.2:

                 (i)     the aggregate amount of the requested Borrowing;

                 (ii)    the date of such Borrowing, which shall be a
         Business Day;





                                       20
<PAGE>   26


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

                 (iv)    the Interest Period to be applicable to such
         Borrowing, which shall be a period contemplated by the definition of
         the term "Interest Period".

Promptly following receipt of a Competitive Bid Request in accordance with this
Section, the Global Administrative Agent shall notify the Lenders of the
details thereof by telecopy to each Lender of a Notice of Competitive Bid Quote
Request inviting the Lenders to submit Competitive Bids.

         (b)     Each Lender may (but shall not have any obligation to) make
one or more Competitive Bids to Borrower in response to a Competitive Bid
Request.  Each Competitive Bid by a Lender must be in a form approved by the
Global Administrative Agent and must be received by the Global Administrative
Agent by telecopy, in the case of a Eurodollar Competitive Borrowing, not later
than noon, New York City time, three Business Days before the proposed date of
such Competitive Borrowing, and in the case of a Fixed Rate Borrowing, not
later than 10:00 a.m., New York City time, on the proposed date of such
Competitive Borrowing.  Competitive Bids that do not conform substantially to
the form approved by the Global Administrative Agent may be rejected by the
Global Administrative Agent, and the Global Administrative Agent shall notify
the applicable Lender as promptly as practicable.  Each Competitive Bid shall
specify (i) the principal amount (which shall be a minimum of $5,000,000 and an
integral multiple of $1,000,000 and which may equal the entire principal amount
of the Competitive Borrowing requested by Borrower) of the Competitive Loan or
Loans that the Lender is willing to make, (ii) the Competitive Bid Rate or
Rates at which the Lender is prepared to make such Loan or Loans (expressed as
a percentage rate per annum in the form of a decimal to no more than four
decimal places) and (iii) the Interest Period applicable to each such Loan and
the last day thereof.

         (c)     The Global Administrative Agent shall promptly notify Borrower
by telecopy of a summary of the Competitive Bid Rate and the principal amount
specified in each Competitive Bid and the identity of the Lender that shall
have made such Competitive Bid.

         (d)     Subject only to the provisions of this paragraph, Borrower may
accept or reject any Competitive Bid.  Borrower shall notify the Global
Administrative Agent by telephone, confirmed by telecopy, in the form of a
Competitive Bid Accept/Reject Letter, whether and to what extent it has decided
to accept or reject each Competitive Bid, in the case of a Eurodollar
Competitive Borrowing, not later than 1:00 p.m., New York City time, three
Business Days before the date of the proposed Competitive Borrowing, and in the
case of a Fixed Rate Borrowing, not later than 11:00 a.m., New York City time,
on the proposed date of the Competitive Borrowing; provided that (i) the
failure of Borrower to give such notice shall be deemed to be a rejection of
each





                                       21
<PAGE>   27


Competitive Bid, (ii) Borrower shall not accept a Competitive Bid made at a
particular Competitive Bid Rate if Borrower rejects a Competitive Bid made at a
lower Competitive Bid Rate, (iii) the aggregate amount of the Competitive Bids
accepted by Borrower shall not exceed the aggregate amount of the requested
Competitive Borrowing specified in the related Competitive Bid Request, (iv) to
the extent necessary to comply with clause (iii) above, Borrower may accept
Competitive Bids at the same Competitive Bid Rate in part, which acceptance, in
the case of multiple Competitive Bids at such Competitive Bid Rate, shall be
made pro rata in accordance with the amount of each such Competitive Bid, and
(v) except pursuant to clause (iv) above, no Competitive Bid shall be accepted
for a Competitive Loan unless such Competitive Loan is in a minimum principal
amount of $5,000,000  and an integral multiple of $1,000,000; provided further
that if a Competitive Loan must be in an amount less than $5,000,000 because of
the provisions of clause (iv) above, such Competitive Loan may be for a minimum
of $1,000,000 or any integral multiple thereof, and in calculating the pro rata
allocation of acceptances of portions of multiple Competitive Bids at a
particular Competitive Bid Rate pursuant to clause (iv) the amounts shall be
rounded to integral multiples of $1,000,000 in a manner determined by Borrower.
A notice given by Borrower pursuant to this paragraph shall be irrevocable.

         (e)     The Global Administrative Agent shall promptly notify each
bidding Lender by telecopy whether or not its Competitive Bid has been accepted
(and, if so, the amount and Competitive Bid Rate so accepted), and each
successful bidder will thereupon become bound, subject to the terms and
conditions hereof, to make the Competitive Loan in respect of which its
Competitive Bid has been accepted.

         (f)     If the Global Administrative Agent shall elect to submit a
Competitive Bid in its capacity as a Lender, it shall submit such Competitive
Bid directly to Borrower at least one quarter of an hour earlier than the time
by which the other Lenders are required to submit their Competitive Bids to the
Global Administrative Agent pursuant to paragraph (b) of this Section.

         SECTION 2.5.    Funding of Borrowings.

         (a)     Each Lender shall make each Loan to be made by it hereunder on
the proposed date thereof by wire transfer of immediately available funds by
12:00 noon, New York City time, to the account of the Global Administrative
Agent most recently designated by it for such purpose by notice to the Lenders.
The Global Administrative Agent will make such Loans available to Borrower by
promptly crediting the amounts so received, in like funds, to an account of
Borrower designated by Borrower from time to time in a written notice to the
Global Administrative Agent executed by two Authorized Officers.

         (b)     Unless the Global Administrative Agent shall have received
notice from a Lender prior to the proposed date of any Borrowing that such
Lender will not make available to the Global Administrative Agent such Lender's
share of such Borrowing, the Global Administrative





                                       22
<PAGE>   28


Agent may assume that such Lender has made such share available on such date in
accordance with paragraph (a) of this Section and may, in reliance upon such
assumption, make available to Borrower a corresponding amount.  In such event,
if a Lender has not in fact made its share of the applicable Borrowing
available to the Global Administrative Agent, then the applicable Lender and
Borrower severally agree to pay to the Global Administrative Agent forthwith on
demand such corresponding amount with interest thereon, for each day from and
including the date such amount is made available to Borrower to but excluding
the date of payment to the Global Administrative Agent, at (i) in the case of
such Lender, the greater of the Federal Funds Effective Rate or a rate
determined by the Global Administrative Agent in accordance with banking
industry rules on interbank compensation or (ii) in the case of Borrower, the
interest rate applicable to Loans made in such Borrowing.  If such Lender pays
such amount to the Global Administrative Agent, then such amount shall
constitute such Lender's Loan included in such Borrowing.

         SECTION 2.6.    Extension of Maturity Date and of Commitments.

         (a)     Subject to the other provisions of this Agreement and provided
that no Event of Default has occurred and is continuing, the total Commitments
shall be effective for an initial period from the Global Effective Date to the
Original Maturity Date; provided that the Maturity Date, and concomitantly the
total Commitments, may be extended for successive one year periods expiring on
the date which is one (1) year from the then scheduled Maturity Date.  If
Borrower shall request in an Annual Certificate of Extension delivered to the
Global Administrative Agent at least 45 days prior to the date which is four
years prior to the Maturity Date that the Maturity Date be extended for one
year from the then scheduled Maturity Date, then the Global Administrative
Agent shall promptly notify each Lender of such request and each Lender shall
notify the Global Administrative Agent, no later than 30 days prior to the date
which is four years prior to the Maturity Date, whether such Lender, in the
exercise of its sole discretion, will extend the Maturity Date for such one
year period.  Any Lender which shall not timely notify the Global
Administrative Agent whether it will extend the Maturity Date shall be deemed
to not have agreed to extend the Maturity Date.  No Lender shall have any
obligation whatsoever to agree to extend the Maturity Date.  Any agreement to
extend the Maturity Date by any Lender shall be irrevocable, except as provided
in Section 2.6(c).

         (b)     If all Lenders notify the Global Administrative Agent pursuant
to clause (a) of this Section 2.6 of their agreement to extend the Maturity
Date, then the Global Administrative Agent shall so notify each Lender and
Borrower, and such extension shall be effective without other or further action
by any party hereto for such additional one year period.

         (c)     If Lenders constituting at least the Required Lenders approve
the extension of the then scheduled Maturity Date (such Lenders agreeing to
extend the Maturity Date herein called the "Accepting Lenders") and if one or
more Lenders shall notify, or be deemed to notify, the Global Administrative
Agent pursuant to clause (a) of this Section 2.6 that they will not extend





                                       23
<PAGE>   29


the then scheduled Maturity Date (such Lenders herein called the "Declining
Lenders"), then (A) the Global Administrative Agent shall promptly so notify
Borrower and the Accepting Lenders, (B) the Accepting Lenders shall, upon
Borrower's election to extend the then scheduled Maturity Date in accordance
with clause (i) or (ii) below, extend the then scheduled Maturity Date and (C)
Borrower shall, pursuant to a notice delivered to the Global Administrative
Agent, the Accepting Lenders and the Declining Lenders, no later than the tenth
(10th) day following the date by which each Lender is required, pursuant to
Section 2.6(a), to approve or disapprove the requested extension of the total
Commitments, either:

                 (i)     elect to extend the Maturity 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 Maturity Date except for the operation
         of this Section 2.6.  On such date, (x) Borrower shall deliver a
         notice of the effectiveness of such termination to the Declining
         Lenders with a copy to the Global Administrative Agent and (y)
         Borrower shall pay in full in immediately available funds all
         Obligations of Borrower owing to the Declining Lenders, including any
         amounts required pursuant to Section 2.15, and (z) upon the occurrence
         of the events set forth in clauses (x) and (y), the Declining Lenders
         shall each cease to be a Lender hereunder for all purposes, other than
         for purposes of Sections 2.14 through 2.17, Section 2.19 and Section
         10.3, and shall cease to have any obligations or any Commitment
         hereunder, other than to the Agents pursuant to Article IX, and the
         Global Administrative Agent shall promptly notify the Accepting
         Lenders and Borrower of the new Commitments; or

                 (ii)    elect to extend the Maturity Date with respect to
         the Accepting Lenders and, prior to or no later than the then
         scheduled Maturity 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) Borrower shall pay in full
         in immediately available funds all Obligations of Borrower owing to
         any 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 Declining Lender's or Declining
         Lenders' rights and obligations 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 Obligations payable to such Declining Lender
         or Declining Lenders plus any accrued but unpaid interest on such
         Obligations and accrued but unpaid fees or other amounts owing in
         respect of such Declining Lender's or Declining Lenders' Loans and
         Commitments hereunder, and (y) upon the payment of such amounts
         referred to in clause(x) and the execution of an Assignment and
         Acceptance by the Replacement Lender or Replacement Lenders and the
         Declining Lender or Declining Lenders, the Replacement Lender or
         Replacement Lenders shall each constitute a Lender hereunder and the
         Declining Lender





                                       24
<PAGE>   30


         or Declining Lenders being so replaced shall no longer constitute a
         Lender (other than for purposes of Sections 2.14 through 2.17, Section
         2.19 and Section 10.3), and shall no longer have any obligations
         hereunder, other than to the Agents pursuant to Article IX; 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 Lenders thereof) no later than the tenth
         (10th) day following the date by which each Lender is required,
         pursuant to Section 2.6(a), to approve or disapprove the requested
         extension of the Maturity Date, and concomitantly the total
         Commitments.

         If Borrower fails to timely provide the election notice referred to in
this clause(c), Borrower 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 Maturity Date, and the concomitant total Commitments, with
respect to the Accepting Lenders, and, on the then scheduled Maturity Date,
Borrower shall repay in full all Obligations under the Loan Documents.

         SECTION 2.7.    Interest Elections.

         (a)     Each Revolving Borrowing initially shall be of the Type
specified in the applicable Borrowing Request (or an ABR Borrowing if no Type
is specified) and, in the case of a Eurodollar Revolving Borrowing, shall have
an initial Interest Period as specified in such Borrowing Request (or one month
if no Interest Period is specified).  Thereafter, Borrower may elect to convert
such Borrowing to a different Type or to continue such Borrowing and, in the
case of a Eurodollar Revolving Borrowing, may elect Interest Periods therefor,
all as provided in this Section.  Borrower may, subject to the requirements of
Section 2.2(c), elect different options with respect to different portions of
the affected Borrowing, in which case each such portion shall be allocated
ratably among the Lenders holding the Loans comprising such Borrowing, and the
Loans comprising each such portion shall be considered a separate Borrowing.
This Section shall not apply to Competitive Borrowings, which may not be
converted or continued.

         (b)     To make an election pursuant to this Section, Borrower shall
notify the Global Administrative Agent of such election by telephone by the
time that a Borrowing Request would be required under Section 2.3 if Borrower
were requesting a Revolving Borrowing of the Type resulting from such election
to be made on the effective date of such election.  Each such telephonic
Interest Election Request shall be irrevocable and shall be confirmed promptly
by hand delivery or telecopy to the Global Administrative Agent of a written
Interest Election Request signed by Borrower.

        (c)     Each telephonic and written Interest Election Request shall 
specify the following information in compliance with Section 2.2:





                                       25
<PAGE>   31


                 (i)     the Borrowing to which such Interest Election
         Request applies and, if different options are being elected with
         respect to different portions thereof, the portions thereof to be
         allocated to each resulting Borrowing (in which case the information
         to be specified pursuant to clauses (iii) and (iv) below shall be
         specified for each resulting Borrowing);

                 (ii)    the effective date of the election made pursuant
         to such Interest Election Request, which shall be a Business Day;

                 (iii)   whether the resulting Borrowing is to be an ABR
         Borrowing or a Eurodollar Borrowing; and
  
                 (iv)    if the resulting Borrowing is a Eurodollar
         Borrowing, the Interest Period to be applicable thereto after giving
         effect to such election, which shall be a period contemplated by the
         definition of the term "Interest Period".

If any such Interest Election Request requests a Eurodollar Borrowing but does
not specify an Interest Period, then Borrower shall be deemed to have selected
an Interest Period of one month's duration.

         (d)     Promptly following receipt of an Interest Election Request,
the Global Administrative Agent shall advise each Lender of the details thereof
and of such Lender's portion of each resulting Borrowing.

         (e)     If Borrower fails to deliver a timely Interest Election
Request with respect to a Eurodollar Revolving Borrowing prior to the end of
the Interest Period applicable thereto, then, unless such Borrowing is repaid
as provided herein, at the end of such Interest Period such Borrowing shall be
converted to an ABR Borrowing.  Notwithstanding any contrary provision hereof,
if an Event of Default has occurred and is continuing and the Global
Administrative Agent, at the request of the Required Lenders, so notifies
Borrower, then, so long as an Event of Default is continuing, (i) no
outstanding Revolving Borrowing may be converted to or continued as a
Eurodollar Borrowing and (ii) unless repaid and provided the Indebtedness has
not been accelerated pursuant to Section 8.3, each Eurodollar Revolving
Borrowing shall be converted to an ABR Borrowing at the end of the Interest
Period applicable thereto.

         SECTION 2.8.    Termination and Reduction of Commitments.

         (a)     Unless previously terminated, the Commitments shall terminate
on the Maturity Date.





                                       26
<PAGE>   32


         (b)     Borrower may at any time terminate, or from time to time
reduce, the Commitments; provided that (i) each reduction of the Commitments
shall be in an amount that is an integral multiple of $1,000,000 and not less
than $5,000,000 and (ii) Borrower shall not terminate or reduce the Commitments
if, after giving effect to any concurrent prepayment of the Loans in accordance
with Section 2.10, the sum of the Revolving Credit Exposures plus the aggregate
principal amount of outstanding Competitive Loans would exceed the total
Commitments.

         (c)     Borrower shall notify the Global Administrative Agent of any
election to terminate or reduce the Commitments under paragraph (b) of this
Section at least two Business Days prior to the effective date of such
termination or reduction, specifying such election and the effective date
thereof.  Promptly following receipt of any notice, the Global Administrative
Agent shall advise the Lenders of the contents thereof.  Each notice delivered
by Borrower pursuant to this Section shall be irrevocable; provided that a
notice of termination of the Commitments delivered by Borrower may state that
such notice is conditioned upon the effectiveness of other credit facilities,
in which case such notice may be revoked by Borrower (by notice to the Global
Administrative Agent on or prior to the specified effective date) if such
condition is not satisfied.  Any termination or reduction of the Commitments
shall be permanent.  Each reduction of the Commitments shall be made ratably
among the Lenders in accordance with their respective Commitments.

         SECTION 2.9.    Repayment of Loans; Evidence of Debt.

         (a)     Borrower hereby unconditionally promises to pay (i) to the
Global Administrative Agent for the account of each Lender the then unpaid
principal amount of each Revolving Loan on the Maturity Date and (ii) to the
Global Administrative Agent for the account of each Lender the then unpaid
principal amount of each Competitive Loan on the last day of the Interest
Period applicable to such Loan.

         (b)     Each Lender shall maintain in accordance with its usual
practice an account or accounts evidencing the indebtedness of Borrower to such
Lender resulting from each Loan made by such Lender, including the amounts of
principal and interest payable and paid to such Lender from time to time
hereunder.

         (c)     The Global Administrative Agent shall maintain accounts in
which it shall record (i) the amount of each Loan made hereunder, the Class and
Type thereof and the Interest Period applicable thereto, (ii) the amount of any
principal or interest due and payable or to become due and payable from
Borrower to each Lender hereunder and (iii) the amount of any sum received by
the Global Administrative Agent hereunder for the account of the Lenders and
each Lender's share thereof.





                                       27
<PAGE>   33


         (d)     The entries made in the accounts maintained pursuant to
paragraph (b) or (c) of this Section shall be prima facie evidence of the
existence and amounts of the obligations recorded therein; provided that the
failure of any Lender or the Global Administrative Agent to maintain such
accounts or any error therein shall not in any manner affect the obligation of
Borrower to repay the Loans in accordance with the terms of this Agreement.

         (e)     Any Lender may request that Loans made by it be evidenced by
one or more promissory notes.  In such event, Borrower shall prepare, execute
and deliver to such Lender promissory notes payable to the order of such Lender
(or, if requested by such Lender, to such Lender and its registered assigns and
in a form approved by the Global Administrative Agent).  Thereafter, the Loans
evidenced by such promissory notes and interest thereon shall at all times
(including after assignment pursuant to Section 10.4) be represented by one or
more promissory notes in such form payable to the order of the payee named
therein (or, if any such promissory note is a registered note, to such payee
and its registered assigns).

         SECTION 2.10.   Prepayment of Loans.

         (a)     Borrower shall have the right at any time and from time to
time to prepay any Borrowing in whole or in part, subject to prior notice in
accordance with paragraph (b) of this Section; provided that Borrower shall not
have the right to prepay any Competitive Loan without the prior consent of the
Lender thereof and compensation for break funding, to the extent required by
Section 2.15.

         (b)     Borrower shall notify the Global Administrative Agent by
telephone (confirmed by telecopy) of any prepayment hereunder (i) in the case
of prepayment of a Eurodollar Revolving Borrowing, not later than 1:00 p.m.,
New York City time, three Business Days before the date of prepayment or (ii)
in the case of prepayment of an ABR Revolving Borrowing, not later than 11:00
a.m., New York City time, on the date of prepayment.  Each such notice shall be
irrevocable and shall specify the prepayment date and the principal amount of
each Borrowing or portion thereof to be prepaid; provided that, if a notice of
prepayment is given in connection with a conditional notice of termination of
the Commitments as contemplated by Section 2.8, then such notice of prepayment
may be revoked if such notice of termination is revoked in accordance with
Section 2.8.  Promptly following receipt of any such notice relating to a
Revolving Borrowing, the Global Administrative Agent shall advise the Lenders
of the contents thereof.  Each partial prepayment of any Revolving Borrowing
shall be in an amount that would be permitted in the case of an advance of a
Revolving Borrowing of the same Type as provided in Section 2.2.  Each
prepayment of a Revolving Borrowing shall be applied ratably to the Loans
included in the prepaid Borrowing.  Prepayments shall be accompanied by accrued
interest to the extent required by Section 2.12.





                                       28
<PAGE>   34


         SECTION 2.11.   Fees.

         (a)     Borrower agrees to pay to the Global Administrative Agent for
the account of each Lender a facility fee (the "Facility Fee"), which shall
accrue at the Applicable Rate on the daily amount of the Commitment of such
Lender (whether used or unused) during the period from and including the Global
Effective Date to but excluding the date on which such Commitment terminates;
provided that, if such Lender continues to have any Revolving Credit Exposure
after its Commitment terminates, then such Facility Fee shall continue to
accrue on the daily amount of such Lender's Revolving Credit Exposure from and
including the date on which its Commitment terminates to but excluding the date
on which such Lender ceases to have any Revolving Credit Exposure.  Accrued
Facility Fees shall be payable in arrears on the first day of, April, July and
October and the second day of January of each year and on the date on which the
Commitments terminate, commencing on the first such date to occur after the
date hereof; provided that any Facility Fees accruing after the date on which
the Commitments terminate shall be payable on demand.  All Facility Fees shall
be computed on the basis of a year of 365 days (or 366 days in a leap year) and
shall be payable for the actual number of days elapsed (including the first day
but excluding the last day).

         (b)     Borrower agrees to pay to the Global Administrative Agent, for
its own account, fees payable in the amounts and at the times separately agreed
upon between Borrower and the Global Administrative Agent.

         (c)     All fees payable hereunder shall be paid on the dates due, in
immediately available funds, to the Global Administrative Agent for
distribution, in the case of Facility Fees, to the Lenders.  Fees paid shall
not be refundable under any circumstances.

         SECTION 2.12.   Interest.

         (a)     The Loans comprising each ABR Borrowing shall bear interest at
the Alternate Base Rate.

         (b)     The Loans comprising each Eurodollar Borrowing shall bear
interest (i) in the case of a Eurodollar Revolving Loan, at the Adjusted LIBO
Rate for the Interest Period in effect for such Borrowing plus the Applicable
Rate, or (ii) in the case of a Eurodollar Competitive Loan, at the LIBO Rate
for the Interest Period in effect for such Borrowing plus (or minus, as
applicable) the Margin applicable to such Loan.

         (c)     Each Fixed Rate Loan shall bear interest at the Fixed Rate
applicable to such Loan.

         (d)     Notwithstanding the foregoing, if any principal of or interest
on any Loan or any fee or other amount payable by Borrower hereunder is not
paid when due, whether at stated





                                       29
<PAGE>   35


maturity, upon acceleration or otherwise, such overdue amount shall bear
interest, after as well as before judgment, at a rate per annum equal to (i) in
the case of overdue principal of any Loan, 2% plus the rate otherwise
applicable to such Loan as provided in the preceding paragraphs of this Section
or (ii) in the case of any other amount, 2% plus the rate applicable to ABR
Loans as provided in paragraph (a) of this Section.

         (e)     Accrued interest on each Loan shall be payable in arrears on
each Interest Payment Date for such Loan and, in the case of Revolving Loans,
upon termination of the Commitments; provided that (i) interest accrued
pursuant to paragraph (d) of this Section shall be payable on demand, (ii) in
the event of any repayment or prepayment of any Loan, accrued interest on the
principal amount repaid or prepaid shall be payable on the date of such
repayment or prepayment and (iii) in the event of any conversion of any
Eurodollar Revolving Loan prior to the end of the current Interest Period
therefor, accrued interest on such Loan shall be payable on the effective date
of such conversion.

         (f)     All interest hereunder shall be computed on the basis of a
year of 360 days, except that interest computed by reference to (i) the
Alternate Base Rate at times when the Alternate Base Rate is based on the Prime
Rate and (ii) the Fixed Rate, shall be computed on the basis of a year of 365
days (or 366 days in a leap year), and in each case shall be payable for the
actual number of days elapsed (including the first day but excluding the last
day).  The applicable Alternate Base Rate, Adjusted LIBO Rate or LIBO Rate
shall be determined by the Global Administrative Agent, and such determination
shall be conclusive absent demonstrable error.

         SECTION 2.13.   Alternate Rate of Interest.  If prior to the
commencement of any Interest Period for a Eurodollar Borrowing:

                 (i)     the Global Administrative Agent determines (which
         determination shall be conclusive absent demonstrable error) that
         adequate and reasonable means do not exist for ascertaining the
         Adjusted LIBO Rate or the LIBO Rate, as applicable, for such Interest
         Period; or

                 (ii)    the Global Administrative Agent is advised by the
         Required Lenders that the Adjusted LIBO Rate for such Interest Period
         will not adequately and fairly reflect the cost to such Lenders of
         making or maintaining their Loans included in such Borrowing for such
         Interest Period; then the Global Administrative Agent shall give
         notice thereof to Borrower and the Lenders by telephone or telecopy as
         promptly as practicable thereafter and, until the Global
         Administrative Agent notifies Borrower and the Lenders that the
         circumstances giving rise to such notice no longer exist, (i) any
         Interest Election Request that requests the conversion of any
         Revolving Borrowing to, or continuation of any Revolving Borrowing as,
         a Eurodollar Borrowing shall be





                                       30
<PAGE>   36


         ineffective, (ii) if any Borrowing Request requests a Eurodollar
         Revolving Borrowing, such Borrowing shall be made as an ABR Borrowing
         and (iii) any request by Borrower for a Eurodollar Competitive
         Borrowing shall be ineffective; provided that (A) if the circumstances
         giving rise to such notice do not affect all the Lenders, then
         requests by Borrower for Eurodollar Competitive Borrowings may be made
         to Lenders that are not affected thereby and (B) if the circumstances
         giving rise to such notice affect only one Type of Borrowings, then
         the other Type of Borrowings shall be permitted.

         SECTION 2.14.   Increased Costs.

         (a)     If any Change in Law shall:

                 (i)     impose, modify or deem applicable any reserve,
         special deposit or similar requirement against assets of, deposits
         with or for the account of, or credit extended by, any Lender (except
         any such reserve requirement reflected in the Adjusted LIBO Rate); or

                 (ii)    impose on any Lender or the London interbank
         market any other condition affecting this Agreement or Eurodollar
         Loans or Fixed Rate Loans made by such Lender;

and the result of any of the foregoing shall be to increase the cost to such
Lender of making or maintaining any Eurodollar Loan or Fixed Rate Loan (or of
maintaining its obligation to make any such Loan) or to reduce the amount of
any sum received or receivable by such Lender hereunder (whether of principal,
interest or otherwise), then Borrower will pay to such Lender such additional
amount or amounts as will compensate such Lender for such additional costs
incurred or reduction suffered.

         (b)     If any Lender reasonably determines that any Change in Law
regarding capital requirements has or would have the effect of reducing the
rate of return on such Lender's capital or on the capital of such Lender's
holding company, if any, as a consequence of this Agreement or the Loans made
by such Lender, to a level below that which such Lender or such Lender's
holding company could have achieved but for such Change in Law (taking into
consideration such Lender's policies and the policies of such Lender's holding
company with respect to capital adequacy), then from time to time Borrower will
pay to such Lender such additional amount or amounts as will compensate such
Lender or such Lender's holding company for any such reduction suffered.

         (c)     A certificate of a Lender setting forth the amount or amounts
necessary to compensate such Lender or its holding company, as the case may be,
as specified in paragraph (a) or (b) of this Section (together with the
calculation thereof) shall be delivered to Borrower and





                                       31
<PAGE>   37


shall be conclusive absent demonstrable error.  Borrower shall pay such Lender
the amount shown as due on any such certificate within 10 days after receipt
thereof.

         (d)     Failure or delay on the part of any Lender to demand
compensation pursuant to this Section shall not constitute a waiver of such
Lender's right to demand such compensation; provided that Borrower shall not be
required to compensate a Lender pursuant to this Section for any increased
costs or reductions incurred more than 180 days prior to the date that such
Lender notifies Borrower of the Change in Law giving rise to such increased
costs or reductions and of such Lender's intention to claim compensation
therefor; provided further that, if the Change in Law giving rise to such
increased costs or reductions is retroactive, then the 180-day period referred
to above shall be extended to include the period of retroactive effect thereof.

         (e)     Notwithstanding the foregoing provisions of this Section, a
Lender shall not be entitled to compensation pursuant to this Section in
respect of any Competitive Loan if the Change in Law that would otherwise
entitle it to such compensation shall have been publicly announced prior to
submission of the Competitive Bid pursuant to which such Loan was made.

         SECTION 2.15.   Break Funding Payments.  In the event of (a) the
payment of any principal of any Eurodollar Loan or Fixed Rate Loan other than
on the last day of an Interest Period applicable thereto (including as a result
of an Event of Default), (b) the conversion of any Eurodollar Loan other than
on the last day of the Interest Period applicable thereto, (c) the failure to
borrow, convert, continue or prepay any Revolving Loan on the date specified in
any notice delivered pursuant hereto (regardless of whether such notice may be
revoked under Section 2.10(b) and is revoked in accordance therewith), (d) the
failure to borrow any Competitive Loan after accepting the Competitive Bid to
make such Loan, or (e) the assignment of any Eurodollar Loan or Fixed Rate Loan
other than on the last day of the Interest Period applicable thereto as a
result of a request by Borrower pursuant to either Section 2.6, or Section 2.18
then, in any such event, Borrower shall compensate each Lender for the loss,
cost and expense attributable to such event.  In the case of a Eurodollar Loan,
such loss, cost or expense to any Lender shall be deemed to include an amount
determined by such Lender to be the excess, if any, of (i) the amount of
interest which would have accrued on the principal amount of such Loan had such
event not occurred, at the Adjusted LIBO Rate that would have been applicable
to such Loan, for the period from the date of such event to the last day of the
then current Interest Period therefor (or, in the case of a failure to borrow,
convert or continue, for the period that would have been the Interest Period
for such Loan), over (ii) the amount of interest which would accrue on such
principal amount for such period at the interest rate which such Lender would
bid were it to bid, at the commencement of such period, for dollar deposits of
a comparable amount and period from other banks in the eurodollar market.  A
certificate of any Lender setting forth any amount or amounts that such Lender
is entitled to receive, together with the calculation thereof, pursuant to this
Section shall be delivered to Borrower and the Global Administrative Agent and
shall be conclusive absent demonstrable error.  Borrower shall pay to the
Global Administrative Agent for





                                       32
<PAGE>   38


the account of such Lender the amount shown as due on any such certificate
within 10 days after receipt thereof.

         SECTION 2.16.   Taxes.

         (a)     Any and all payments by or on account of any obligation of
Borrower hereunder shall be made free and clear of and without deduction for
any Indemnified Taxes or Other Taxes; provided that if Borrower shall be
required to deduct any Indemnified Taxes or Other Taxes from such payments,
then (i) the sum payable shall be increased as necessary so that after making
all required deductions (including deductions applicable to additional sums
payable under this Section) the Global Administrative Agent or Lender (as the
case may be) receives an amount equal to the sum it would have received had no
such deductions been made, (ii) Borrower shall make such deductions and (iii)
Borrower shall pay the full amount deducted to the relevant Governmental
Authority in accordance with applicable law.

         (b)     In addition, Borrower shall pay any Other Taxes to the
relevant Governmental Authority in accordance with applicable law.

         (c)     Borrower shall pay the Global Administrative Agent and each
Lender, within 10 days after written demand therefor, the full amount of any
Indemnified Taxes or Other Taxes paid by the Global Administrative Agent or
such Lender, as the case may be, on or with respect to any payment by or on
account of any obligation of Borrower hereunder (including Indemnified Taxes or
Other Taxes imposed or asserted on or attributable to amounts payable under
this Section) and any penalties, interest and reasonable expenses arising
therefrom or with respect thereto (other than any such penalties or interest
arising through the failure of the Global Administrative Agent or Lender to act
as a reasonably prudent agent or lender, respectively), whether or not such
Indemnified Taxes or Other Taxes were correctly or legally imposed or asserted
by the relevant Governmental Authority.  A certificate as to the amount of such
payment or liability delivered to Borrower by a Lender, or by the Global
Administrative Agent on its own behalf or on behalf of a Lender, shall be
conclusive absent demonstrable error.

         (d)     As soon as practicable after any payment of Indemnified Taxes
or Other Taxes by Borrower to a Governmental Authority, Borrower shall deliver
to the Global Administrative Agent the original or a certified copy of a
receipt issued by such Governmental Authority evidencing such payment, a copy
of the return reporting such payment or other evidence of such payment
reasonably satisfactory to the Global Administrative Agent.

         (e)     Any Foreign Lender that is entitled to an exemption from or
reduction of withholding tax under the law of the jurisdiction in which
Borrower is located, or any treaty to which such jurisdiction is a party, with
respect to payments under this Agreement shall deliver to Borrower (with a copy
to the Global Administrative Agent), at the time or times prescribed by





                                       33
<PAGE>   39


applicable law, such properly completed and executed documentation prescribed
by applicable law or reasonably requested by Borrower as will permit such
payments to be made without withholding or at a reduced rate.

         SECTION 2.17.   Payments Generally; Pro Rata Treatment; Sharing of
Set-offs.

         (a)     Borrower shall make each payment required to be made by it
hereunder (whether of principal, interest or fees, or of amounts payable under
Section 2.14, 2.15 or 2.16, or otherwise) prior to 1:00 p.m., New York City
time, on the date when due, in immediately available funds, without set-off or
counterclaim.  All such payments shall be made to the Global Administrative
Agent, c/o Loan & Agency Services Group, One Chase Manhattan Plaza, 8th Floor,
New York, New York 10081, except that payments pursuant to Sections 2.14, 2.16
and 10.3 shall be made directly to the Persons entitled thereto.  The Global
Administrative Agent shall distribute any such payments received by it for the
account of any other Person to the appropriate recipient promptly following
receipt thereof.  If any payment hereunder shall be due on a day that is not a
Business Day, the date for payment shall be extended to the next succeeding
Business Day, and, in the case of any payment accruing interest, interest
thereon shall be payable for the period of such extension.  All payments
hereunder shall be made in dollars.

         (b)     If at any time insufficient funds are received by and
available to the Global Administrative Agent to pay fully all amounts of
principal, interest and fees then due hereunder, such funds shall be applied
(i) first, towards payment of interest and fees then due hereunder, ratably
among the parties entitled thereto in accordance with the amounts of interest
and fees then due to such parties, and (ii) second, towards payment of
principal then due hereunder, ratably among the parties entitled thereto in
accordance with the amounts of principal then due to such parties.  If
insufficient funds are received due to Borrower's entitlement to withhold
amounts on account of Excluded Taxes in relation to a particular Lender, such
insufficiency shall not be subject to this Section 2.17(b) but shall be
withheld from and shall only affect payments made to such Lender.

         (c)     If any Lender shall, by exercising any right of set-off or
counterclaim or otherwise, obtain payment in respect of any principal of or
interest on any of its Revolving Loans resulting in such Lender receiving
payment of a greater proportion of the aggregate amount of its Revolving Loans
and accrued interest thereon than the proportion received by any other Lender,
then the Lender receiving such greater proportion shall purchase (for cash at
face value) participations in the Revolving Loans of other Lenders to the
extent necessary so that the benefit of all such payments shall be shared by
the Lenders ratably in accordance with the aggregate amount of principal of and
accrued interest on their respective Revolving Loans; provided that (i) if any
such participations are purchased and all or any portion of the payment giving
rise thereto is recovered, such participations shall be rescinded and the
purchase price restored to the extent of such recovery, without interest, and
(ii) the provisions of this paragraph shall not be construed to apply





                                       34
<PAGE>   40


to any payment made by Borrower pursuant to and in accordance with the express
terms of this Agreement or any payment obtained by a Lender as consideration
for the assignment of or sale of a participation in any of its Loans to any
assignee or participant, other than to Borrower or any Subsidiary or Affiliate
thereof (as to which the provisions of this paragraph shall apply).  Borrower
consents to the foregoing and agrees, to the extent it may effectively do so
under applicable law, that any Lender acquiring a participation pursuant to the
foregoing arrangements may exercise against Borrower rights of set-off and
counterclaim with respect to such participation as fully as if such Lender were
a direct creditor of Borrower in the amount of such participation.

         (d)     Unless the Global Administrative Agent shall have received
notice from Borrower prior to the date on which any payment is due to the
Global Administrative Agent for the account of the Lenders hereunder that
Borrower will not make such payment, the Global Administrative Agent may assume
that Borrower has made such payment on such date in accordance herewith and
may, in reliance upon such assumption, distribute to the Lenders the amount
due.  In such event, if Borrower has not in fact made such payment, then each
of the Lenders severally agrees to repay to the Global Administrative Agent
forthwith on demand the amount so distributed to such Lender with interest
thereon, for each day from and including the date such amount is distributed to
it to but excluding the date of payment to the Global Administrative Agent, at
the greater of the Federal Funds Effective Rate and a rate determined by the
Global Administrative Agent in accordance with banking industry rules on
interbank compensation.

         (e)     If any Lender shall fail to make any payment required to be
made by it pursuant to Section 2.17(d), then the Global Administrative Agent
may, in its discretion (notwithstanding any contrary provision hereof), apply
any amounts thereafter received by the Global Administrative Agent for the
account of such Lender to satisfy such Lender's obligations under such Section
until all such unsatisfied obligations are fully paid.

         SECTION 2.18.   Mitigation Obligations; Replacement of Lenders.

         (a)     If any Lender requests compensation under Section 2.14, or if
Borrower is required to pay any additional amount to any Lender or any
Governmental Authority for the account of any Lender pursuant to Section 2.16,
then such Lender shall use reasonable efforts to designate a different lending
office for funding or booking its Loans hereunder or to assign its rights and
obligations hereunder to another of its offices, branches or affiliates, if, in
the judgment of such Lender, such designation or assignment (i) would eliminate
or reduce amounts payable pursuant to Section 2.14 or 2.16, as the case may be,
in the future and (ii) would not subject such Lender to any unreimbursed cost
or expense and would not otherwise be disadvantageous to such Lender.  Borrower
hereby agrees to pay all reasonable costs and expenses incurred by any Lender
in connection with any such designation or assignment.





                                       35
<PAGE>   41


         (b)     If any Lender requests compensation under Section 2.14, or if
Borrower is required to pay any additional amount to any Lender or any
Governmental Authority for the account of any Lender pursuant to Section 2.16,
or if any Lender defaults in its obligation to fund Loans hereunder, then
Borrower may upon notice to such Lender and the Global Administrative Agent,
require such Lender to assign and delegate, without recourse or expense to, or
warranty by, such Lender (in accordance with and subject to the restrictions
contained in Section 10.4), all its interests, rights and obligations under
this Agreement (other than any outstanding Competitive Loans held by it) to an
assignee designated by Borrower which meets the requirements of Section 10.4(b)
that shall assume such obligations (which assignee may be another Lender, if a
Lender accepts such assignment); provided that (i) Borrower shall have received
the prior written consent of the Global Administrative Agent, which consent
shall not unreasonably be withheld, (ii) such Lender shall have received
payment of an amount equal to the outstanding principal of its Loans (other
than Competitive Loans), accrued interest thereon, accrued fees and all other
amounts payable to it hereunder, from the assignee (to the extent of such
outstanding principal and accrued interest and fees) or Borrower (in the case
of all other amounts), (iii) the assignee and assignor shall have entered into
an Assignment and Acceptance, and (iv) in the case of any such assignment
resulting from a claim for compensation under Section 2.14 or payments required
to be made pursuant to Section 2.16, such assignment will result in a reduction
in such compensation or payments.

         SECTION 2.19.   Currency Conversion and Currency Indemnity.

         (a)     Payments in Agreed Currency.  Borrower 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
Borrower or otherwise howsoever), such payment shall constitute a discharge of
the liability of Borrower hereunder and under the other Loan Documents in
respect of such obligation only to the extent of the amount of the Agreed
Currency which the relevant 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 next
Business Day following the date such judgment is given and in any event
Borrower shall be obligated to pay the Agents and the Lenders any deficiency in
accordance with Section 2.19(c).  For the foregoing purposes "rate of exchange"
means the rate at which the relevant Lender or Agent, as





                                       36
<PAGE>   42


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 Lender or
any Agent receives any payment or payments on account of the liability of
Borrower hereunder pursuant to any judgment or order in any Other Currency, and
(ii) the amount of the Agreed Currency which the relevant 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 Borrower on demand shall, and
Borrower hereby agrees to, indemnify and save the 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 2.19(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 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 III

                         Representations and Warranties

         In order to induce the Lenders and the Agents to enter into this
Agreement and the Lenders to make Loans hereunder, Borrower represents and
warrants unto the Agents and each Lender as set forth in this Article III.

         SECTION 3.1.    Organization.  Borrower is a corporation, and
each of its 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
where the failure to so qualify would have a Material Adverse Effect.

         SECTION 3.2.    Authorization and Validity.  The execution,
delivery and performance by Borrower of this Agreement and each other Loan
Document executed or to be executed by it, are within Borrower's corporate
powers, have been duly authorized by all necessary corporate action on behalf
of it, and do not (a) contravene Borrower's articles of incorporation or other





                                       37
<PAGE>   43


organizational documents, as the case may be; (b) contravene any material
contractual restriction, law or governmental regulation or court decree or
order binding on or affecting Borrower or any Subsidiary; or (c) result in, or
require the creation or imposition of, any Lien, not permitted by Section 7.1,
on any of Borrower's or any Subsidiary's properties.  This Agreement
constitutes, and each other Loan Document executed by Borrower will, on the due
execution and delivery thereof, constitute, the legal, valid and binding
obligations of Borrower enforceable in accordance with their respective terms
subject as to enforcement only to bankruptcy, insolvency, reorganization,
moratorium or other similar laws affecting the enforcement of creditor rights
generally and to general principles of equity.

         SECTION 3.3.    Government Approval and Regulation.  No
authorization or approval or other action by, and no notice to or filing with,
any governmental authority or regulatory body or other Person is required for
the due execution, delivery or performance by Borrower of this Agreement or any
other Loan Document.  Neither Borrower nor any of its Subsidiaries is an
"investment company," within the meaning of the Investment Company Act of 1940,
as amended, or a "holding company," or a "subsidiary company" of a "holding
company," or an "affiliate" of a "holding company" or of a "subsidiary company"
of a "holding company," within the meaning of the Public Utility Holding
Company Act of 1935, as amended.

         SECTION 3.4.    Pension and Welfare Plans.  During the
twelve-consecutive-month period prior to the date of the execution and delivery
of this Agreement and prior to the date of any Borrowing hereunder, no steps
have been taken to terminate any Pension Plan, and no contribution failure has
occurred with respect to any Pension Plan sufficient to give rise to a lien
under Section 302(f) of ERISA.  No condition exists or event or transaction has
occurred with respect to any Pension Plan which would result in the incurrence
by Borrower or any member of the Controlled Group of any liability, fine or
penalty in excess of $25,000,000.  Neither Borrower nor any member of the
Controlled Group has any contingent liability with respect to any
post-retirement benefit under a Welfare Plan, other than liability for
continuation coverage described in Part 6 of Title I of ERISA.

         SECTION 3.5.    Regulation U.  Borrower is not engaged in the
business of extending credit for the purpose of purchasing or carrying margin
stock, and no proceeds of any Loans will be used for a purpose which violates,
or would be inconsistent with, Regulation U.  Terms for which meanings are
provided in Regulations U are used in this Section with such meanings.

         SECTION 3.6.    Taxes.  Borrower and each of its Subsidiaries has
to the best knowledge of Borrower after due investigation filed all tax returns
and reports required by law to have been filed by it and has paid all taxes and
governmental charges thereby shown to be owing, except any such taxes or
charges which are being contested in good faith by appropriate proceedings and
for which adequate reserves in accordance with GAAP shall have been set aside
on its books or which the failure to file or pay could not reasonably be
expected to have a Material Adverse Effect.





                                       38
<PAGE>   44


         SECTION 3.7.    Subsidiaries; Restricted Subsidiaries.  Schedule
3.7 hereto contains an accurate list of all of the presently existing
Subsidiaries, including, without limitation, Restricted Subsidiaries, of
Borrower 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 Borrower 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.

                                   ARTICLE IV

                                   Conditions

         SECTION 4.1.    Initial Loan.  The obligations of the Lenders to
make the initial Loan shall be subject to the prior or concurrent satisfaction
of each of the conditions precedent set forth in this Section 4.1.

         (a)     Resolutions and Officers Certificates.  The Global
                 Administrative Agent shall have received from Borrower a
                 certificate, dated the Closing Date, of the Secretary or
                 Assistant Secretary of Borrower as to (a) resolutions of its
                 governing board, then in full force and effect authorizing the
                 execution, delivery and performance of this Agreement and each
                 other Loan Document to be executed by it; (b) the incumbency
                 and signatures of those of its officers authorized to act with
                 respect to this Agreement and each other Loan Document
                 executed by it; and (c) its articles of incorporation and
                 bylaws; upon which certificates each Lender may conclusively
                 rely until it shall have received a further certificate of an
                 authorized officer of Borrower canceling or amending such
                 prior certificate.

         (b)     Existing Facilities.  The Global Administrative Agent shall
                 have received a certificate, signed by an Authorized Officer
                 of Borrower, stating that Borrower or its Subsidiaries have
                 repaid in full and terminated the Existing Global Credit
                 Facilities concurrently with the initial Combined Loans under
                 the Combined Credit Agreements.

         (c)     Opinions of Counsel.  The Global Administrative Agent shall
                 have received opinions, dated the Closing Date, addressed to
                 the Global Administrative Agent, the other Agents and all
                 Lenders, from (i) Zurab S.  Kobiashvili, Esq., Vice President
                 and General Counsel of Borrower, in substantially the form
                 attached hereto as Exhibit A-1, (ii) Chamberlain, Hrdlicka,
                 White, Williams & Martin, counsel to Borrower, in
                 substantially the form attached hereto as Exhibit A-2, and





                                       39
<PAGE>   45


                 (iii) Mayer, Brown & Platt, counsel to the Global
                 Administrative Agent, in substantially the form attached
                 hereto as Exhibit B.

         (d)     Closing Fees and Expenses.  The Global Administrative Agent
                 shall have received for its own account, or for the account of
                 each Lender and other Agent, as the case may be, all fees,
                 costs and expenses due and payable pursuant hereto.

         (e)     Financial Statements.  The Global Administrative Agent shall
                 have received a certificate, signed by an Authorized Officer
                 of Borrower, stating that the audited consolidated financial
                 statements of Borrower and its Subsidiaries for fiscal year
                 1996 (the "1996 Financials") fairly present Borrower's
                 financial condition and results of operations and that prior
                 to the Global Effective Date no material adverse change in the
                 condition or operations of Borrower and its Subsidiaries,
                 taken as a whole, from that reflected in the 1996 Financials
                 has occurred and is continuing.

         (f)     Environmental Warranties.  In the ordinary course of its
                 business, Borrower conducts an ongoing review of the effect of
                 existing Environmental Laws on the business, operations and
                 properties of Borrower and its Subsidiaries, in the course of
                 which it attempts to identify and evaluate associated
                 liabilities and costs (including, without limitation, any
                 capital or operating expenditures required for clean-up or
                 closure of properties presently or previously owned, 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
                 Global Administrative Agent shall have received a certificate,
                 signed by an Authorized Officer of Borrower, stating that
                 after such review Borrower has reasonably concluded that
                 existing Environmental Laws are unlikely to have a Material
                 Adverse Effect, or that Borrower has established adequate
                 reserves in respect of any required clean-up.

         (g)     Global Effectiveness Notice.  The Global Administrative Agent
                 shall have received the Global Effectiveness Notice.

         (h)     Australian Credit Agreement and Canadian Credit Agreement.
                 The Global Administrative Agent shall have received copies of
                 the executed Australian Credit Agreement and the other
                 Australian Loan Documents and the executed Canadian Credit
                 Agreement and the other Canadian Loan Documents.





                                       40
<PAGE>   46


         (i)     Litigation.  The Global Administrative Agent shall have
                 received a certificate, signed by an Authorized Officer of
                 Borrower, stating that no litigation, arbitration,
                 governmental proceeding, Tax claim, dispute or administrative
                 or other proceeding shall be pending or, to the knowledge of
                 Borrower, threatened against Borrower or any of its
                 Subsidiaries which could reasonably be expected to have a
                 Material Adverse Effect or which purports to affect the
                 legality, validity or enforceability of this Agreement or any
                 other Loan Document.

         (j)     Other Documents.  The Global Administrative Agent shall have
                 received such other instruments and documents as any of the
                 Agents or their counsel may have reasonably requested.

The Global Administrative Agent shall notify Borrower, the other Agents and the
Lenders of the Global Effective Date, and such notice shall be conclusive and
binding.  Notwithstanding the foregoing, the obligations of the Lenders to make
Loans hereunder shall not become effective unless each of the foregoing
conditions is satisfied (or waived pursuant to Section 10.2) at or prior to
3:00 p.m., New York City time, on June 30, 1997 (and, in the event such
conditions are not so satisfied or waived, the Commitments shall terminate at
such time).

         SECTION 4.2.    All Loans.  The obligation of each Lender to fund
any Loan which results in an increase in the aggregate outstanding principal
amount of Loans under this Agreement on the occasion of any Borrowing shall be
subject to the satisfaction of each of the conditions precedent set forth in
this Section 4.2.

         (a)     Compliance with Warranties and No Default.  Both before and
                 after giving effect to any Borrowing, the following statements
                 shall be true and correct: (1) the representations and
                 warranties set forth in Article III shall be true and correct
                 with the same effect as if then made (unless stated to relate
                 solely to an earlier date, in which case such representations
                 and warranties shall be true and correct as of such earlier
                 date); and (b) no Default or Event of Default shall have then
                 occurred and be continuing.

         (b)     Borrowings.  The Global Administrative Agent shall have
                 received a Borrowing Request for any Revolving Borrowing, or a
                 Competitive Borrowing Request and a Competitive Bid
                 Accept/Reject Letter for any Competitive Borrowing.





                                       41
<PAGE>   47


                                   ARTICLE V

                             Affirmative Covenants

         Until the Commitments have expired or been terminated and all
Obligations shall have been paid in full and unless the Required Lenders shall
otherwise consent in writing, Borrower covenants and agrees with the Lenders
that:

         SECTION 5.1.    Financial Reporting and Notices.  Borrower will
furnish, or will cause to be furnished, to each Lender and the Global
Administrative Agent copies of the following financial statements, reports,
notices and information:

         (a)     within 90 days after the end of each Fiscal Year of Borrower,
                 a copy of the audited annual report for such fiscal year for
                 Borrower and its Subsidiaries, including therein consolidated
                 balance sheets of Borrower and its Subsidiaries as of the end
                 of such fiscal year and consolidated statements of earnings
                 and cash flow of Borrower and its Subsidiaries for such fiscal
                 year, in each case certified (without qualification) by
                 independent public accountants of nationally recognized
                 standing selected by Borrower;

         (b)     within 45 days after the end of each of the first three fiscal
                 quarters of each fiscal year of Borrower commencing with the
                 fiscal quarter ending June 30, 1997, unaudited consolidated
                 balance sheets of Borrower and its Subsidiaries as of the end
                 of such fiscal quarter and consolidated statements of earnings
                 and cash flow of Borrower and its Subsidiaries for such fiscal
                 quarter and for the period commencing at the end of the
                 previous fiscal year and ending with the end of such fiscal
                 quarter, certified by an Authorized Officer of Borrower;

         (c)     together with the financial statements described in (a) and
                 (b) above a compliance certificate, in substantially the form
                 of Exhibit C or any other form approved by the Global
                 Administrative Agent, executed by an Authorized Officer of
                 Borrower;

         (d)     within five (5) days after the occurrence of each Default, a
                 statement of an Authorized Officer of Borrower setting forth
                 details of such Default and the action which Borrower has
                 taken and proposes to take with respect thereto;

         (e)     promptly after the sending or filing thereof, copies of all
                 material public filings, reports and communications from
                 Borrower, and all reports and registration statements which
                 Borrower or any of its Subsidiaries files with the Securities
                 and Exchange Commission or any national securities exchange;





                                       42
<PAGE>   48


         (f)     immediately upon becoming aware of the institution of any
                 steps by Borrower or any other Person to terminate any Pension
                 Plan, or the failure to make a required contribution to any
                 Pension Plan if such failure is sufficient to give rise to a
                 Lien under Section 302(f) of ERISA, or the taking of any
                 action with respect to a Pension Plan which would reasonably
                 be expected to result in the requirement that Borrower furnish
                 a bond or other security to the PBGC or such Pension Plan, or
                 the occurrence of any event with respect to any Pension Plan
                 which would reasonably be expected to result in the incurrence
                 by Borrower of any liability, fine or penalty in excess of
                 $25,000,000, or any material increase in the contingent
                 liability of Borrower with respect to any postretirement
                 Welfare Plan benefit, notice thereof; and

         (g)     such other information respecting the financial condition or
                 operations of Borrower or any of its Subsidiaries as any
                 Lender through the Global Administrative Agent may from time
                 to time reasonably request.

         SECTION 5.2.    Compliance with Laws.  Borrower will, and will
cause each of its Subsidiaries to, comply in all material respects with all
applicable laws, rules, regulations and orders where noncompliance therewith
may reasonably be expected to have a Material Adverse Effect, except where the
necessity of compliance therewith is contested in good faith by appropriate
proceedings.

         SECTION 5.3.    Maintenance of Properties.  Borrower will, and
will cause each of its Subsidiaries to, maintain, preserve, protect and keep
valid title to, or valid leasehold interest in, all of its properties and
assets, real and personal, tangible and intangible, of any nature whatsoever
(including patents, trademarks, trade names, service marks and copyrights),
free and clear of all Liens, charges or claims (including infringement claims
with respect to patents, trademarks, copyrights and the like) except as
permitted pursuant to Section 7.1 and except for imperfections and other
burdens of title thereto as do not in the aggregate materially detract from the
value thereof or for the use thereof in their businesses (taken as a whole).

         SECTION 5.4.    Insurance.  Borrower will, and will cause each of
its Subsidiaries to, maintain or cause to be maintained with responsible
insurance companies (subject to self-insured retentions) insurance with respect
to its properties and business against such casualties and contingencies and of
such types and in such amounts as is customary in the case of similar
businesses.

         SECTION 5.5.    Books and Records.  Borrower will, and will cause
each of its Subsidiaries to, keep books and records which accurately reflect
all of its business affairs and transactions and permit the Global
Administrative Agent and the other Agents and each Lender through the Global
Administrative Agent or any of their respective authorized representatives,





                                       43
<PAGE>   49


during normal business hours and at reasonable intervals, to visit all of its
offices, to discuss its financial matters with its officers and to examine
(and, at the expense of the Global Administrative Agent or such other Agent or
Lender or, if a Default or Event of Default has occurred and is continuing, at
the expense of Borrower, photocopy extracts from) any of its books or other
records.

         SECTION 5.6.    Minimum Book Value for Assets of Borrower and its
Restricted Subsidiaries.  Borrower shall maintain an aggregate book value for
assets of the Borrower and its Restricted Subsidiaries (without duplication and
excluding the aggregate book value attributable to the Borrower or any
Restricted Subsidiary arising in connection with any Subsidiary which is not a
Restricted Subsidiary) as of the end of any fiscal quarter, commencing with the
quarter ending March 31, 1997, equal to or greater than the difference of (i)
US $2,000,000,000 less (ii) the aggregate amount of any non-cash write downs
(other than for recurring depletion or depreciation) made by Borrower and any
Restricted Subsidiary; provided that, if as of the end of any fiscal quarter
Borrower is not in compliance with this Section, Borrower, for a period of 30
days following the delivery of the financial statements for such fiscal
quarter, shall be entitled to cure such non-compliance by delivering a notice
to the Global Administrative Agent designating certain Unrestricted
Subsidiaries as Restricted Subsidiaries for the purposes of this Agreement at
which time the Global Administrative Agent shall redetermine compliance with
this Section using such newly-designated Restricted Subsidiaries in such
redetermination.

         SECTION 5.7.    Use of Proceeds.  Borrower will, and will cause
each Subsidiary to, use the proceeds of the Loans (i) to refinance existing
Indebtedness of Borrower and its Subsidiaries, (ii) for Borrower's and its
Subsidiaries' general corporate purposes, including any non-hostile
acquisitions, or (iii) to backup Borrower's commercial paper facilities.

                                   ARTICLE VI

                              Financial Covenants

         Until the Commitments have expired or been terminated and all
Obligations shall have been paid in full and unless the Required Lenders shall
otherwise consent in writing, Borrower covenants and agrees with the Lenders
that:

         SECTION 6.1.    Minimum Tangible Net Worth.  Borrower will not
permit its Consolidated Tangible Net Worth as of the end of any fiscal quarter,
commencing with the quarter ending March 31, 1997, to be less than (i)
$1,000,000,000 plus (ii) an amount equal to 50% of the sum of Borrower's and
its Subsidiaries' consolidated net income for each fiscal quarter, beginning
with the fiscal quarter ending June 30, 1997, during which such consolidated
net income is greater than $0.





                                       44
<PAGE>   50


         SECTION 6.2.    Ratio of Total Debt to Capital.  Borrower will
not permit its ratio (expressed as a percentage) of (i) the consolidated Debt
of Borrower and its Subsidiaries to (ii) Capital to be greater than 60% at the
end of any fiscal quarter, commencing with the fiscal quarter ending March 31,
1997.

                                  ARTICLE VII

                               Negative Covenants

         Until the Commitments have expired or terminated and all Obligations
have been paid in full and unless the Required Lenders shall otherwise consent
in writing, Borrower covenants and agrees with the Lenders that:

         SECTION 7.1.    Liens.  Borrower will not, and will not permit
any of its Subsidiaries to, create, incur, assume or suffer to exist any Lien
upon the stock, assets, or indebtedness of Borrower or any of its Subsidiaries
to secure Indebtedness of Borrower or any other Person except:

         (i)     Liens on any property or assets owned or leased by Borrower or
                 any Subsidiary existing at the time such property or asset was
                 acquired (or at the time such Person became a Subsidiary);
                 provided that in the case of the acquisition of a Subsidiary
                 such Lien only encumbers property or assets immediately prior
                 to, or at the time of, the acquisition by Borrower of such
                 Subsidiary;

         (ii)    purchase money Liens so long as such Liens only encumber
                 property or assets acquired with the proceeds of the purchase
                 money indebtedness incurred in connection with such Lien;

         (iii)   Liens granted by an Unrestricted Subsidiary on its assets to
                 secure Indebtedness incurred by such Unrestricted Subsidiary;

         (iv)    Liens on assets of a Restricted Subsidiary securing
                 Indebtedness of a Restricted Subsidiary owing to Borrower or
                 to another Restricted Subsidiary or Liens on assets of an
                 Unrestricted Subsidiary securing Indebtedness of an
                 Unrestricted Subsidiary owing to Borrower, to a Restricted
                 Subsidiary or to another Unrestricted Subsidiary;

         (v)     Liens existing on the Closing Date set forth on Schedule 7.1;

         (vi)    Liens arising under operating agreements;





                                       45
<PAGE>   51


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

         (viii)  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 oil, natural gas and natural gas liquids, 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;

         (ix)    Liens on the stock or other ownership interests of or in any
                 Unrestricted Subsidiary;

         (x)     Liens for taxes, assessments or similar charges, incurred in
                 the ordinary course of business, that are not yet due and
                 payable or that are being contested as set forth in Section
                 3.6;

         (xi)    pledges or deposits made in the ordinary course of business to
                 secure payment of worker's compensation, or to participate in
                 any fund in connection with worker's compensation,
                 unemployment insurance, old-age pensions or other social
                 security programs;

         (xii)   Liens imposed by mandatory provisions of law such as for
                 mechanics', materialmen's, warehousemen's, carriers', or other
                 like Liens, securing obligations incurred in the ordinary
                 course of business that are not yet due and payable;

         (xiii)  Liens in renewal or extension of any of the foregoing
                 permitted Liens, so long as limited to the property or assets
                 encumbered and the amount of Indebtedness secured immediately
                 prior to such renewal or extension; and

         (xiv)   in addition to Liens permitted by clauses (i) through (xiii)
                 above, Liens on property or assets if the aggregate
                 Indebtedness secured thereby does not exceed $100,000,000.

         SECTION 7.2.    Mergers.  Borrower will not liquidate or
dissolve, consolidate with, or merge into or with, any other Person, or sell,
lease or otherwise transfer all or substantially all of its assets unless (a)
Borrower is the survivor of such merger or consolidation, and (b) no Default or
Event of Default has occurred and is continuing or would occur after giving
effect thereto.





                                       46
<PAGE>   52



         SECTION 7.3.    Asset Dispositions.  Borrower will not, and will
not permit any of its Restricted Subsidiaries to, sell, transfer, lease,
contribute or otherwise convey, or grant options, warrants or other rights with
respect to all or substantially all of its assets.  Notwithstanding the
foregoing, nothing herein shall prohibit any transfer of any assets from
Borrower to any Subsidiary of Borrower, from any Subsidiary of Borrower to
Borrower or from a Subsidiary of Borrower to another Subsidiary of Borrower.

         SECTION 7.4.    Transactions with Affiliates.  Borrower will not,
and will not permit any of its Subsidiaries to, enter into, or cause, suffer or
permit to exist any arrangement or contract with any of its other Affiliates
unless such arrangement or contract or group of arrangements or contracts, as
the case may be, are conducted on an arms-length basis; provided, however, that
this Section shall not apply to Producers Energy Marketing, LLC, a Delaware
limited liability company, 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,
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.

         SECTION 7.5.    Restrictive Agreements.  Borrower will not, and
will not permit any of its Subsidiaries to, enter into any agreement (excluding
this Agreement, or any other Loan Document) limiting the ability of Borrower to
amend or otherwise modify this Agreement or any other Loan Document.  Borrower
will not, and will not permit any of its Restricted Subsidiaries to, enter into
any agreement which restricts or prohibits the ability of any Restricted
Subsidiary to make any payments, directly or indirectly, to Borrower by way of
dividends, advances, repayments of loans or advances, reimbursements of
management and other intercompany charges, expenses and accruals or other
returns on investments, or any other agreement or arrangement which restricts
the ability of any such Restricted Subsidiary to make any payment, directly or
indirectly, to Borrower.

         SECTION 7.6.     Guaranties.  Borrower will not, and will not
permit any of its Restricted Subsidiaries to, guaranty any Indebtedness not
included in the consolidated Debt of Borrower and its Subsidiaries in an
aggregate outstanding principal amount at any time exceeding $100,000,000.

                                  ARTICLE VIII

                               Events of Default

         SECTION 8.1.     Listing of Events of Default.  Each of the
following events or occurrences described in this Section 8.1 shall constitute
an "Event of Default":





                                       47
<PAGE>   53


         (a)     Non-Payment of Obligations.  Borrower shall default in the
                 payment or prepayment when due of any principal of any Loan,
                 or Borrower shall default (and such default shall continue
                 unremedied for a period of five (5) Business Days) in the
                 payment when due of any interest, fee or of any other
                 obligation hereunder.

         (b)     Breach of Warranty.  Any representation or warranty of
                 Borrower made or deemed to be made hereunder or in any other
                 Loan Document or any other writing or certificate furnished by
                 or on behalf of Borrower to the Global Administrative Agent,
                 any other Agent or any Lender for the purposes of or in
                 connection with this Agreement or any such other Loan Document
                 is or shall be false or misleading when made in any material
                 respect.

         (c)     Non-Performance of Covenants and Obligations.  Borrower shall
                 default in the due performance and observance of any of its
                 obligations under Section 5.6, Section 7.2 or under Article
                 VI.

         (d)     Non-Performance of Other Covenants and Obligations.  Borrower
                 shall default in the due performance and observance of any
                 other agreement contained herein or in any other Loan
                 Document, and such default shall continue unremedied for a
                 period of 30 days after notice thereof shall have been given
                 to Borrower by the Global Administrative Agent or the Required
                 Lenders.

         (e)     Default on Other Indebtedness.  A default shall occur in the
                 payment when due (subject to any applicable grace period),
                 whether by acceleration or otherwise, of any direct payment
                 obligation of Borrower or any of its Restricted Subsidiaries
                 in any amount in excess of $25,000,000.

         (f)     Pension Plans.  Any of the following events shall occur with
                 respect to any Pension Plan: (a) the institution of any steps
                 by Borrower, any member of its Controlled Group or any other
                 Person to terminate a Pension Plan if, as a result of such
                 termination, Borrower or any such member could be required to
                 make a contribution to such Pension Plan, or would reasonably
                 expect to incur a liability or obligation to such Pension
                 Plan, in excess of $25,000,000; or (b) a contribution failure
                 occurs with respect to any Pension Plan sufficient to give
                 rise to a lien under Section 302(f) of ERISA.

         (g)     Bankruptcy and Insolvency.  Borrower or any of its Restricted
                 Subsidiaries shall (a) become insolvent or generally fail to
                 pay, or admit in writing its inability or unwillingness to
                 generally pay, debts as they become due; (b) apply for,
                 consent to, or acquiesce in, the appointment of a trustee,
                 receiver, sequestrator or other custodian for Borrower, or any
                 of its Restricted Subsidiaries, or any substantial





                                       48
<PAGE>   54


                 part of the property of any thereof, or make a general
                 assignment for the benefit of creditors; (c) in the absence of
                 such application, consent or acquiescence, permit or suffer to
                 exist the appointment of a trustee, receiver, sequestrator or
                 other custodian for Borrower, or any of its Restricted
                 Subsidiaries, or for a substantial part of the property of any
                 thereof, and such trustee, receiver, sequestrator or other
                 custodian shall not be discharged within 60 days, provided
                 that Borrower and each Restricted Subsidiary hereby expressly
                 authorizes the Global Administrative Agent, each other Agent
                 and each Lender to appear in any court conducting any relevant
                 proceeding during such 60-day period to preserve, protect and
                 defend their rights under the Loan Documents; (d) permit or
                 suffer to exist the commencement of any bankruptcy,
                 reorganization, debt arrangement or other case or proceeding
                 under any bankruptcy or insolvency law, or any dissolution,
                 winding up or liquidation proceeding, in respect of Borrower
                 or any of its Restricted Subsidiaries, and, if any such case
                 or proceeding is not commenced by Borrower or such Restricted
                 Subsidiary, such case or proceeding shall be consented to or
                 acquiesced in by Borrower or such Restricted Subsidiary or
                 shall result in the entry of an order for relief or shall
                 remain for 60 days undismissed, provided that Borrower and
                 each Restricted Subsidiary hereby expressly authorizes the
                 Global Administrative Agent and each Lender to appear in any
                 court conducting any such case or proceeding during such
                 60-day period to preserve, protect and defend their rights
                 under the Loan Documents; or (e) take any corporate or
                 partnership action authorizing, or in furtherance of, any of
                 the foregoing.

         (h)     Judgments.  Any judgment or order for the payment of money in
                 an amount of $25,000,000 or more in excess of valid and
                 collectible insurance in respect thereof or in excess of an
                 indemnity with respect thereto reasonably acceptable to the
                 Required Lenders shall be rendered against Borrower or any of
                 its Restricted Subsidiaries and either (a) enforcement
                 proceedings shall have been commenced by any creditor upon
                 such judgment or order, or (b) such judgment shall have become
                 final and non-appealable and shall have remained outstanding
                 for a period of 60 consecutive days.

         (i)     Change in Control.  Any Person or group of Persons (within the
                 meaning of Section 13 or 14 of the Securities Exchange Act)
                 shall acquire beneficial ownership (within the meaning of Rule
                 13d-3 promulgated by the Securities and Exchange Commission
                 under the Securities Exchange Act) of 33 1/3% or more of the
                 outstanding shares of common stock of Borrower.

         (j)     Event of Default under Australian Loan Documents or Canadian
                 Loan Documents.  Any "Event of Default" as defined in the
                 Australian Loan Documents or the





                                       49
<PAGE>   55


                 Canadian Loan Documents shall occur; provided that the
                 occurrence of a "Default" as defined in the Australian Loan
                 Documents or the Canadian Loan Documents shall constitute a
                 Default under this Agreement; provided further that if such
                 "Default" is cured or waived under the Australian Loan
                 Documents or the Canadian Loan Documents, as applicable, then
                 such "Default" shall no longer constitute a Default under this
                 Agreement.

         SECTION 8.2.         Action if Bankruptcy.  If any Event of Default
described in Section 8.1(g) shall occur, the Commitments (if not theretofore
terminated) shall automatically terminate and the outstanding principal amount
of all outstanding Loans and all other obligations hereunder shall
automatically be and become immediately due and payable, without notice or
demand.

         SECTION 8.3.         Action if Other Event of Default.  If any Event
of Default (other than any Event of Default described in Section 8.2) shall
occur for any reason, whether voluntary or involuntary, and be continuing, the
Global Administrative Agent, upon the direction of the Required Lenders, shall
by notice to Borrower declare all of the outstanding principal amount of the
Loans and all other obligations hereunder to be due and payable and the
Commitments (if not theretofore terminated) to be terminated, whereupon the
full unpaid amount of such Loans and other obligations shall be and become
immediately due and payable, without further notice, demand or presentment, and
the Commitments shall terminate.

                                   ARTICLE IX

                                     Agents

         Each of the Lenders hereby irrevocably appoints The Chase Manhattan
Bank as the Global Administrative Agent, Morgan Guaranty Trust Company as
Global Documentation Agent and U.S. Syndication Agent, The First National Bank
of Chicago as U.S. Documentation Agent, NationsBank of Texas, N.A. as Co-Agent,
and Union Bank of Switzerland, Houston Agency, as Co-Agent, and authorizes each
such Agent to take such actions on its behalf and to exercise such powers as
are delegated to such Agent by the terms hereof, together with such actions and
powers as are reasonably incidental thereto.

         Any bank serving as an Agent hereunder shall have the same rights and
powers in its capacity as a Lender as any other Lender and may exercise the
same as though it were not an Agent, and such bank and its Affiliates may
accept deposits from, lend money to and generally engage in any kind of
business with Borrower or any Subsidiary or other Affiliate thereof as if it
were not an Agent hereunder.





                                       50
<PAGE>   56


         The Agents shall not have any duties or obligations except those
expressly set forth herein.  Without limiting the generality of the foregoing,
(a) the Agents shall not be subject to any fiduciary or other implied duties,
regardless of whether a Default has occurred and is continuing, (b) each Agent
shall not have any duty to take any discretionary action or exercise any
discretionary powers, except discretionary rights and powers expressly
contemplated hereby that such Agent is required to exercise in writing by the
Required Lenders (or such other number or percentage of the Lenders as shall be
necessary under the circumstances as provided in Section 10.2), and (c) except
as expressly set forth herein, the Agents shall not have any duty to disclose,
and shall not be liable for the failure to disclose, any information relating
to Borrower or any of its Subsidiaries that is communicated to or obtained by
the bank serving as such Agent or any of its Affiliates in any capacity.  Each
Agent shall not be liable for any action taken or not taken by it with the
consent or at the request of the Required Lenders (or such other number or
percentage of the Lenders as shall be necessary under the circumstances as
provided in Section 10.2) or in the absence of its own gross negligence or
willful misconduct.  Each Agent shall be deemed not to have knowledge of any
Default unless and until written notice thereof is given to such Agent by
Borrower or a Lender, and such Agent shall not be responsible for or have any
duty to ascertain or inquire into (i) any statement, warranty or representation
made in or in connection with this Agreement, (ii) the contents of any
certificate, report or other document delivered hereunder or in connection
herewith, (iii) the performance or observance of any of the covenants,
agreements or other terms or conditions set forth herein, (iv) the validity,
enforceability, effectiveness or genuineness of this Agreement or any other
agreement, instrument or document, or (v) the satisfaction of any condition set
forth in Article IV or elsewhere herein, other than to confirm receipt of items
expressly required to be delivered to such Agent.

         The Global Administrative Agent and the other Agents shall be entitled
to rely upon, and shall not incur any liability for relying upon, any notice,
request, certificate, consent, statement, instrument, document or other writing
believed by it to be genuine and to have been signed or sent by the proper
Person.  The Global Administrative Agent and the other Agents also may rely
upon any statement made to it orally or by telephone and believed by it to be
made by the proper Person, and shall not incur any liability for relying
thereon.  The Global Administrative Agent and the other Agents may consult with
legal counsel (who may be counsel for Borrower), independent accountants and
other experts selected by it, and shall not be liable for any action taken or
not taken by it in accordance with the advice of any such counsel, accountants
or experts.

         Any Agent may perform any and all its duties and exercise its rights
and powers by or through any one or more sub-agents appointed by such Agent.
Any Agent and any such sub-agent may perform any and all its duties and
exercise its rights and powers through their respective Related Parties.  The
exculpatory provisions of the preceding paragraphs shall apply to any such
sub-agent and to the Related Parties of such Agent and any such sub-agent, and
shall apply to their respective activities in connection with the syndication
of the credit facilities provided for herein as well as activities as an Agent.





                                       51
<PAGE>   57


         Subject to the appointment and acceptance of a successor Global
Administrative Agent as provided in this paragraph, the Global Administrative
Agent may resign at any time by notifying the Lenders and Borrower.  Upon any
such resignation, Borrower shall have the right, in consultation with the
Combined Required Lenders, to appoint one of the Lenders as a successor.  If no
successor shall have been so appointed by Borrower and shall have accepted such
appointment within 30 days after the retiring Global Administrative Agent gives
notice of its resignation, then the retiring Global Administrative Agent may,
on behalf of the Lenders, appoint a successor Global Administrative Agent which
shall be a bank with an office in New York, New York, or an Affiliate of any
such bank.  Upon the acceptance of its appointment as Global Administrative
Agent hereunder by a successor, such successor shall succeed to and become
vested with all the rights, powers, privileges and duties of the retiring
Global Administrative Agent, and the retiring Global Administrative Agent shall
be discharged from its duties and obligations hereunder.  The fees payable by
Borrower to a successor Global Administrative Agent shall be the same as those
payable to its predecessor unless otherwise agreed between Borrower and such
successor.  After the Global Administrative Agent's resignation hereunder, the
provisions of this Article and Section 10.3 shall continue in effect for the
benefit of such retiring Global Administrative Agent, its sub-agents and their
respective Related Parties in respect of any actions taken or omitted to be
taken by any of them while it was acting as Global Administrative Agent.

         Each Lender acknowledges that it has, independently and without
reliance upon any Agent or any other Lender and based on such documents and
information as it has deemed appropriate, made its own credit analysis and
decision to enter into this Agreement.  Each Lender also acknowledges that it
will, independently and without reliance upon any Agent or any other Lender and
based on such documents and information as it shall from time to time deem
appropriate, continue to make its own decisions in taking or not taking action
under or based upon this Agreement, any related agreement or any document
furnished hereunder or thereunder.

                                   ARTICLE X

                                 Miscellaneous

         SECTION 10.1.   Notices.  Except in the case of notices and other
communications expressly permitted to be given by telephone, all notices and
other communications provided for herein shall be in writing and shall be
delivered by hand or overnight courier service, mailed by certified or
registered mail or sent by telecopy, as follows:

         (a)     if to Borrower, to:

                          Apache Corporation
                          2000 Post Oak Boulevard, Suite 100
                          Houston, Texas  77056-4400





                                       52
<PAGE>   58


                          Attention:       Matthew W. Dundrea, Treasurer
                          Telephone:       (713) 296-6640
                          Facsimile:       (713) 296-6458

                 with a copy to:

                          Manager, Banking and Cash Management
                          Apache Corporation
                          2000 Post Oak Boulevard, Suite 100
                          Houston, Texas  77056-4400
                          Telephone:       (713) 296-6642
                          Facsimile:       (713) 296-6477

                 and with copy to:

                          Vice President and General Counsel
                          Apache Corporation
                          2000 Post Oak Boulevard, Suite 100
                          Houston, Texas  77056-4400
                          Telephone:       (713) 296-6204
                          Facsimile:       (713) 296-6458

         (b)     if to the Global Administrative Agent, to:

                          The Chase Manhattan Bank
                          Loan & Agency Services Group
                          One Chase Manhattan Plaza
                          8th Floor
                          New York, New York 10081
                          Attention:       Vincent Siino
                          Telephone:       (212) 552-7423
                          Facsimile:       (212) 552-5777

                 with a copy to:

                          The Chase Manhattan Bank
                          707 Travis, 5 TCB N
                          Houston, Texas 77002
                          Attention:       Peter Licalzi
                          Telephone:       (713) 216-8870
                          Facsimile:       (713) 216-8869





                                       53
<PAGE>   59


         (c)     if to any other Lender, to it at its address (or telecopy
number) provided to the Global Administrative Agent and Borrower or as set
forth in its Administrative Questionnaire.

Any party hereto may change its address or telecopy number for notices and
other communications hereunder by notice to the other parties hereto.  All
notices and other communications given to any party hereto in accordance with
the provisions of this Agreement shall be deemed to have been given on the date
of receipt.

         SECTION 10.2.   Waivers; Amendments.

         (a)     No failure or delay by the Global Administrative Agent or any
Lender in exercising any right or power hereunder shall operate as a waiver
thereof, nor shall any single or partial exercise of any such right or power,
or any abandonment or discontinuance of steps to enforce such a right or power,
preclude any other or further exercise thereof or the exercise of any other
right or power.  The rights and remedies of the Global Administrative Agent and
the Lenders hereunder are cumulative and are not exclusive of any rights or
remedies that they would otherwise have.  No waiver of any provision of this
Agreement or consent to any departure by Borrower therefrom shall in any event
be effective unless the same shall be permitted by paragraph (b) of this
Section, and then such waiver or consent shall be effective only in the
specific instance and for the purpose for which given.  Without limiting the
generality of the foregoing, the making of a Loan shall not be construed as a
waiver of any Default, regardless of whether the Global Administrative Agent or
any Lender may have had notice or knowledge of such Default at the time.

         (b)     Any of the Combined Loan Documents or any provision thereof
may be waived, amended or modified pursuant to an agreement or agreements in
writing entered into by Borrower and the Combined Required Lenders or by
Borrower and the Global Administrative Agent with the consent of the Combined
Required Lenders; provided that the same waiver, amendment or modification is
requested by Borrower in connection with each of the Combined Credit
Agreements; and provided further that no such agreement shall amend, modify or
otherwise affect the rights or duties of (i) the Lenders described in the first
proviso of Section 10.2(c) without the prior written consent of each Lender
affected thereby and (ii) the Global Administrative Agent without the prior
written consent of the Global Administrative Agent.

         (c)     Except as provided for in Section 10.2(b) above, neither this
Agreement nor any provision hereof may be waived, amended or modified except
pursuant to an agreement or agreements in writing entered into by Borrower and
the Required Lenders or by Borrower and the Global Administrative Agent with
the consent of the Required Lenders; provided that no such agreement shall (i)
increase the Commitment of any Lender or the Commitments without the written
consent of such Lender or each Lender, respectively, (ii) reduce the principal
amount of any Loan or reduce the rate of interest thereon, or reduce any fees
payable hereunder,





                                       54
<PAGE>   60


without the written consent of each Lender affected thereby, (iii) postpone the
scheduled date of payment of the principal amount of any Loan, or any interest
thereon, or any fees payable hereunder, or reduce the amount of, waive or
excuse any such payment, or postpone the scheduled date of expiration of any
Commitment, without the written consent of each Lender affected thereby, (iv)
change Section 2.17(b) or (c) in a manner that would alter the pro rata sharing
of payments required thereby, without the written consent of each Lender, or
(v) change any of the provisions of this Section or the definition of "Required
Lenders" or any other provision hereof specifying the number or percentage of
Lenders required to waive, amend or modify any rights hereunder or make any
determination or grant any consent hereunder, without the written consent of
each Lender; provided further that no such agreement shall amend, modify or
otherwise affect the rights or duties of the Global Administrative Agent
hereunder without the prior written consent of the Global Administrative Agent.

         SECTION 10.3.   Expenses; Indemnity; Damage Waiver.

         (a)     Borrower shall pay (i) all reasonable out-of-pocket expenses
incurred by the Agents and their Affiliates, including the reasonable fees,
charges and disbursements of counsel for the Agents, in connection with the
syndication of the credit facilities provided for herein, the preparation and
administration of this Agreement or any amendments, modifications or waivers of
the provisions hereof (whether or not the transactions contemplated hereby or
thereby shall be consummated) and (ii) all reasonable out-of-pocket expenses
incurred by the Agents or any Lender, including the fees, charges and
disbursements of any counsel for the Agents or any Lender, in connection with
the enforcement or protection of its rights in connection with this Agreement,
including its rights under this Section, or in connection with the Loans made
hereunder, including all such out-of-pocket expenses incurred during any
workout, restructuring or negotiations in respect of such Loans or this
Agreement.

         (b)     Borrower shall indemnify the Agents and each Lender, and each
Related Party of any of the foregoing Persons (each such Person being called an
"Indemnitee") against, and hold each Indemnitee harmless from, any and all
losses, claims, damages, liabilities and related expenses, including the
reasonable fees, charges and disbursements of any counsel for any Indemnitee,
incurred by or asserted against any Indemnitee arising out of, in connection
with, or as a result of (i) the execution or delivery of this Agreement or any
agreement or instrument contemplated hereby, the performance by the parties
hereto of their respective obligations hereunder or the consummation of the
Transactions or any other transactions contemplated hereby, (ii) any Loan or
the actual or proposed use of the proceeds therefrom, (iii) any actual or
alleged presence or release of Hazardous Materials on or from any property
owned or operated by Borrower or any of its Subsidiaries, or any Environmental
Liability related in any way to Borrower or any of its Subsidiaries, or (iv)
any actual or prospective claim, litigation, investigation or proceeding
relating to any of the foregoing, whether based on contract, tort or any other
theory and regardless of whether any Indemnitee is a party thereto; provided
that such





                                       55
<PAGE>   61


indemnity shall not, as to any Indemnitee, be available to the extent that such
losses, claims, damages, liabilities or related expenses (i) resulted from the
gross negligence or willful misconduct of such Indemnitee or (ii) arise in
connection with any issue in litigation commenced by Borrower or any of its
Subsidiaries against any Indemnitee for which a final judgment is entered in
favor of Borrower or any of its Subsidiaries against such Indemnitee.

         (c)     To the extent that Borrower fails to pay any amount required
to be paid by it to the Global Administrative Agent under paragraph (a) or (b)
of this Section, each Lender severally agrees to pay to the Global
Administrative Agent, such Lender's Applicable Percentage (determined as of the
time that the applicable unreimbursed expense or indemnity payment is sought)
of such unpaid amount; provided that the unreimbursed expense or indemnified
loss, claim, damage, liability or related expense, as the case may be, was
incurred by or asserted against the Global Administrative Agent.

         (d)     To the extent permitted by applicable law, Borrower shall not
assert, and hereby waives, any claim against any Indemnitee, on any theory of
liability, for special, indirect, consequential or punitive damages (as opposed
to direct or actual damages) arising out of, in connection with, or as a result
of, this Agreement or any agreement or instrument contemplated hereby, the
Transactions or any Loan or the use of the proceeds thereof, except for any
such claim arising from such Indemnitee's gross negligence or willful
misconduct.

         (e)     All amounts due under this Section shall be payable not later
than thirty (30) days after written demand therefor.

         SECTION 10.4.   Successors and Assigns.

         (a)     The provisions of this Agreement shall be binding upon and
inure to the benefit of the parties hereto and their respective successors and
assigns permitted hereby, except that Borrower may not assign or otherwise
transfer any of its rights or obligations hereunder without the prior written
consent of each Lender (and any attempted assignment or transfer by Borrower
without such consent shall be null and void).  Nothing in this Agreement,
expressed or implied, shall be construed to confer upon any Person (other than
the parties hereto, their respective successors and assigns permitted hereby
and, to the extent expressly contemplated hereby, the Related Parties of each
of the Global Administrative Agent and the Lenders) any legal or equitable
right, remedy or claim under or by reason of this Agreement.

         (b)     Any Lender may assign to one or more assignees all or a
portion of its rights and obligations under this Agreement (including all or a
portion of its Commitment and the Loans at the time owing to it); provided
that (i) except in the case of an assignment to a Lender or an Affiliate of a
Lender, each of Borrower and the Global Administrative Agent must give their
prior written consent to such assignment (which consent shall not be
unreasonably withheld), (ii) except





                                       56     
<PAGE>   62


in the case of an assignment to a Lender or an Affiliate of a Lender or an
assignment of the entire remaining amount of the assigning Lender's Commitment,
the amount of the Commitment of the assigning Lender subject to each such
assignment (determined as of the date the Assignment and Acceptance with
respect to such assignment is delivered to the Global Administrative Agent)
shall be in increments of $1,000,000 and not less than $10,000,000 unless each
of Borrower and the Global Administrative Agent otherwise consent, (iii) each
partial assignment shall be made as an assignment of a proportionate part of
all the assigning Lender's rights and obligations under this Agreement, except
that this clause (iii) shall not apply to rights in respect of outstanding
Competitive Loans, (iv) the parties to each assignment shall execute and
deliver to the Global Administrative Agent an Assignment and Acceptance,
together with a processing and recordation fee of $3,500, and (v) the assignee,
if it shall not be a Lender, shall deliver to the Global Administrative Agent
an Administrative Questionnaire; and provided further that any consent of
Borrower otherwise required under this paragraph shall not be required if an
Event of Default under Section 8.1 has occurred and is continuing.  Subject to
acceptance and recording thereof pursuant to paragraph (d) of this Section,
from and after the effective date specified in each Assignment and Acceptance
the assignee thereunder shall be a party hereto and, to the extent of the
interest assigned by such Assignment and Acceptance, have the rights and
obligations of a Lender under this Agreement, and the assigning Lender
thereunder shall, to the extent of the interest assigned by such Assignment and
Acceptance, be released from its obligations under this Agreement (and, in the
case of an Assignment and Acceptance covering all of the assigning Lender's
rights and obligations under this Agreement, such Lender shall cease to be a
party hereto but shall continue to be entitled to the benefits of Sections
2.14, 2.15, 2.16, 2.17, 2.19 and 10.3).  Any assignment or transfer by a Lender
of rights or obligations under this Agreement that does not comply with this
paragraph shall be treated for purposes of this Agreement as a sale by such
Lender of a participation in such rights and obligations in accordance with
paragraph (e) of this Section.

         (c)     The Global Administrative Agent, acting for this purpose as an
agent of Borrower, shall maintain at one of its offices in The City of New York
a copy of each Assignment and Acceptance delivered to it and a register for the
recordation of the names and addresses of the Lenders, and the Commitment of,
and principal amount of the Loans owing to, each Lender pursuant to the terms
hereof from time to time (the "Register").  The entries in the Register shall
be conclusive, and Borrower, the Global Administrative Agent and the Lenders
may treat each Person whose name is recorded in the Register pursuant to the
terms hereof as a Lender hereunder for all purposes of this Agreement,
notwithstanding notice to the contrary.  The Register shall be available for
inspection by Borrower and any Lender, at any reasonable time and from time to
time upon reasonable prior notice.

         (d)     Upon its receipt of a duly completed Assignment and Acceptance
executed by an assigning Lender and an assignee, the assignee's completed
Administrative Questionnaire (unless the assignee shall already be a Lender
hereunder), the processing and recordation fee referred to





                                       57
<PAGE>   63


in paragraph (b) of this Section and any written consent to such assignment
required by paragraph (b) of this Section, the Global Administrative Agent
shall accept such Assignment and Acceptance and record the information
contained therein in the Register and will provide prompt written notice to
Borrower of the effectiveness of such Assignment.  No assignment shall be
effective for purposes of this Agreement unless it has been recorded in the
Register as provided in this paragraph.

         (e)     Any Lender may, without the consent of Borrower or the Global
Administrative Agent, sell participations to one or more banks or other
entities (a "Participant") in all or a portion of such Lender's rights and
obligations under this Agreement (including all or a portion of its Commitment
and the Loans owing to it); provided that (i) such Lender's obligations under
this Agreement shall remain unchanged, (ii) such Lender shall remain solely
responsible to the other parties hereto for the performance of such
obligations, (iii) Borrower, the Global Administrative Agent and the other
Lenders shall continue to deal solely and directly with such Lender in
connection with such Lender's rights and obligations under this Agreement, and
(iv) if such Participant is not a Lender or an Affiliate of a Lender, such
Lender shall have given notice to Borrower of the name of the Participant and
the amount of such participation.  Any agreement or instrument pursuant to
which a Lender sells such a participation shall provide that such Lender shall
retain the sole right to enforce this Agreement and to approve any amendment,
modification or waiver of any provision of this Agreement; provided that such
agreement or instrument may provide that such Lender will not, without the
consent of the Participant, agree to any amendment, modification or waiver
described in the first proviso to Section 10.2(c) that affects such
Participant.  Subject to paragraph (f) of this Section, Borrower agrees that
each Participant shall be entitled to the benefits of Sections 2.14, 2.15 and
2.16 to the same extent as if it were a Lender and had acquired its interest by
assignment pursuant to paragraph (b) of this Section.  To the extent permitted
by law, each Participant also shall be entitled to the benefits of Section 10.8
as though it were a Lender, provided such Participant agrees to be subject to
Section 2.17(c) as though it were a Lender.

         (f)     A Participant shall not be entitled to receive any greater
payment under Section 2.14, 2.15 or 2.16 than the applicable Lender would have
been entitled to receive with respect to the participation sold to such
Participant, unless Borrower shall expressly agree otherwise in writing.  A
Participant that would be a Foreign Lender if it were a Lender shall not be
entitled to the benefits of Section 2.16 unless Borrower is notified of the
participation sold to such Participant and such Participant agrees, for the
benefit of Borrower, to comply with Section 2.16(e) as though it were a Lender.

         (g)     Any Lender may at any time pledge or assign a security
interest in all or any portion of its rights under this Agreement to secure
obligations of such Lender to a Federal Reserve Bank or, in the case of a
Lender organized in a jurisdiction outside of the United States, a comparable
Person, and this Section shall not apply to any such pledge or assignment of a
security interest; provided that no such pledge or assignment of a





                                       58
<PAGE>   64


security interest shall release a Lender from any of its obligations hereunder
or substitute any such pledgee or assignee for such Lender as a party hereto.

         SECTION 10.5.   Survival.  All covenants, agreements,
representations and warranties made by Borrower herein and in the certificates
or other instruments delivered in connection with or pursuant to this Agreement
shall be considered to have been relied upon by the other parties hereto and
shall survive the execution and delivery of this Agreement and the making of
any Loans, regardless of any investigation made by any such other party or on
its behalf and notwithstanding that the Global Administrative Agent or any
Lender may have had notice or knowledge of any Default or incorrect
representation or warranty at the time any credit is extended hereunder, and
shall continue in full force and effect as long as the principal of or any
accrued interest on any Loan or any fee or any other amount payable under this
Agreement is outstanding and unpaid and so long as the Commitments have not
expired or terminated.  The provisions of Sections 2.14, 2.15, 2.16, 2.17, 2.19
and 10.3 and Article IX shall survive and remain in full force and effect
regardless of the consummation of the transactions contemplated hereby, the
repayment of the Loans, the expiration or termination of the Commitments or the
termination of this Agreement or any provision hereof.

         SECTION 10.6.   Counterparts; Integration; Effectiveness.  This
Agreement may be executed in counterparts (and by different parties hereto on
different counterparts), each of which shall constitute an original, but all of
which when taken together shall constitute a single contract.  This Agreement
and any separate letter agreements with respect to fees payable to the Global
Administrative Agent constitute the entire contract among the parties relating
to the subject matter hereof and supersede any and all previous agreements and
understandings, oral or written, relating to the subject matter hereof.  Except
as provided in Section 4.1, this Agreement shall become effective when it shall
have been executed by the Global Administrative Agent and when the Global
Administrative Agent shall have received counterparts hereof which, when taken
together, bear the signatures of each of the other parties hereto, and
thereafter shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and assigns.  Delivery of an executed
counterpart of a signature page of this Agreement by telecopy shall be
effective as delivery of a manually executed counterpart of this Agreement.

         SECTION 10.7.   Severability.  Any provision of this Agreement
held to be invalid, illegal or unenforceable in any jurisdiction shall, as to
such jurisdiction, be ineffective to the extent of such invalidity, illegality
or unenforceability without affecting the validity, legality and enforceability
of the remaining provisions hereof; and the invalidity of a particular
provision in a particular jurisdiction shall not invalidate such provision in
any other jurisdiction.

         SECTION 10.8.   Right of Setoff.  If an Event of Default shall
have occurred and be continuing and the Obligations of Borrower shall have been
accelerated, each Lender and each of





                                       59
<PAGE>   65


its Affiliates is hereby authorized at any time and from time to time, to the
fullest extent permitted by law, to set off and apply any and all deposits
(general or special, time or demand, provisional or final) at any time held and
other obligations at any time owing by such Lender or Affiliate to or for the
credit or the account of Borrower against any of and all the obligations of
Borrower now or hereafter existing under this Agreement held by such Lender,
irrespective of whether or not such Lender shall have made any demand under
this Agreement and although such obligations may be unmatured.  The rights of
each Lender under this Section are in addition to other rights and remedies
(including other rights of setoff) which such Lender may have.

         SECTION 10.9.   GOVERNING LAW; JURISDICTION; CONSENT TO SERVICE OF
PROCESS.

         (a)     THIS AGREEMENT AND THE OTHER 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 YORK.

         (b)     BORROWER HEREBY IRREVOCABLY AND UNCONDITIONALLY SUBMITS, FOR
ITSELF AND ITS PROPERTY, TO THE NONEXCLUSIVE JURISDICTION OF THE SUPREME COURT
OF THE STATE OF NEW YORK SITTING IN NEW YORK COUNTY AND OF THE UNITED STATES
DISTRICT COURT OF THE SOUTHERN DISTRICT OF NEW YORK, AND ANY APPELLATE COURT
FROM ANY THEREOF, IN ANY ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO
THIS AGREEMENT, OR FOR RECOGNITION OR ENFORCEMENT OF ANY JUDGMENT, AND EACH OF
THE PARTIES HERETO HEREBY IRREVOCABLY AND UNCONDITIONALLY AGREES THAT ALL
CLAIMS IN RESPECT OF ANY SUCH ACTION OR PROCEEDING MAY BE HEARD AND DETERMINED
IN SUCH NEW YORK STATE OR, TO THE EXTENT PERMITTED BY LAW, IN SUCH FEDERAL
COURT.  EACH OF THE PARTIES HERETO AGREES THAT A FINAL JUDGMENT IN ANY SUCH
ACTION OR PROCEEDING SHALL BE CONCLUSIVE AND MAY BE ENFORCED IN OTHER
JURISDICTIONS BY SUIT ON THE JUDGMENT OR IN ANY OTHER MANNER PROVIDED BY LAW.
NOTHING IN THIS AGREEMENT SHALL AFFECT ANY RIGHT THAT THE AGENTS OR ANY LENDER
MAY OTHERWISE HAVE TO BRING ANY ACTION OR PROCEEDING RELATING TO THIS AGREEMENT
AGAINST BORROWER OR ITS PROPERTIES IN THE COURTS OF ANY JURISDICTION.

         (c)     BORROWER HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES, TO THE
FULLEST EXTENT IT MAY LEGALLY AND EFFECTIVELY DO SO, ANY OBJECTION WHICH IT MAY
NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY SUIT, ACTION OR PROCEEDING
ARISING OUT OF OR RELATING TO THIS AGREEMENT IN ANY COURT REFERRED TO IN
PARAGRAPH (b) OF THIS SECTION.





                                       60
<PAGE>   66


EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT
PERMITTED BY LAW, THE DEFENSE OF AN INCONVENIENT FORUM TO THE MAINTENANCE OF
SUCH ACTION OR PROCEEDING IN ANY SUCH COURT.

         (d)     EACH PARTY TO THIS AGREEMENT IRREVOCABLY CONSENTS TO SERVICE
OF PROCESS BY REGISTERED MAIL, POSTAGE PREPAID, OR BY PERSONAL SERVICE WITHIN
OR WITHOUT THE STATE OF NEW YORK.  NOTHING IN THIS AGREEMENT WILL AFFECT THE
RIGHT OF ANY PARTY TO THIS AGREEMENT TO SERVE PROCESS IN ANY OTHER MANNER
PERMITTED BY LAW.

         SECTION 10.10.  Headings.  Article and Section headings and the
Table of Contents used herein are for convenience of reference only, are not
part of this Agreement and shall not affect the construction of, or be taken
into consideration in interpreting, this Agreement.

         SECTION 10.11.  Confidentiality.  Each of the Agents and the
Lenders agrees to maintain the confidentiality of the Information (as defined
below), except that Information may be disclosed (a) to its and its Affiliates'
directors, officers, employees and agents, including accountants, legal counsel
and other advisors (it being understood that the Persons to whom such
disclosure is made will be informed of the confidential nature of such
Information and instructed to keep such Information confidential), (b) to the
extent requested by any regulatory authority, (c) to the extent required by
applicable laws or regulations or by any subpoena or similar legal process, (d)
to any other party to this Agreement, (e) in connection with the exercise of
any remedies hereunder or any suit, action or proceeding relating to this
Agreement or the enforcement of rights hereunder, (f) subject to an agreement
containing provisions substantially the same as those of this Section, to any
assignee of or Participant in, or any prospective assignee of or Participant
in, any of its rights or obligations under this Agreement, (g) with the consent
of Borrower or (h) to the extent such Information (A) becomes publicly
available other than as a result of a breach of this Section by any Person or
(B) becomes available to any Agent or any Lender on a nonconfidential basis
from a source other than Borrower or any Person obligated to maintain the
confidentiality of such Information.  Prior to disclosing any Information under
clause (c) above, the Agent or Lender required or asked to make such disclosure
shall make a good faith effort to give Borrower prior notice of such proposed
disclosure to permit Borrower to attempt to obtain a protective order or other
appropriate injunctive relief.  For the purposes of this Section, "Information"
means all information received from Borrower relating to Borrower or its
business, other than any publicly available information and such information
that is available to any Agent or any Lender on a nonconfidential basis prior
to disclosure by Borrower; provided that, in the case of information received
from Borrower after the date hereof, such information is clearly identified at
the time of delivery as confidential.  Any Person required to maintain the
confidentiality of Information as provided in this Section shall be considered
to have complied with its obligation to do so if such





                                       61
<PAGE>   67


Person has exercised the same degree of care to maintain the confidentiality of
such Information as such Person would accord to its own confidential
information.

         SECTION 10.12.  Interest Rate Limitation.  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 Borrower to a 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 Lender or Agent limiting rates of interest which may be
charged or collected by such Lender or Agent.  Accordingly, if the transactions
contemplated hereby would be illegal, unenforceable, usurious or criminal under
laws applicable to a Lender or Agent (including the laws of any jurisdiction
whose laws may be mandatorily applicable to such Lender or Agent
notwithstanding anything to the contrary in this Agreement or any other Loan
Document but subject to Section 2.12 hereof) then, in that event,
notwithstanding anything to the contrary in this Agreement or any other Loan
Document, it is agreed as follows:

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

                 (ii)         the aggregate of all consideration which
         constitutes interest under applicable law that is 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 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 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 Borrower by such Lender or Agent (or, if such
         consideration shall have been paid in full, such excess refunded to
         Borrower);

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

                 (iv)         if at any time the interest provided pursuant to
         this Section or any other clause of this Agreement or any other Loan
         Document, together with any other fees or compensation payable
         pursuant to this Agreement or any other Loan Document and deemed
         interest under laws applicable to such 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 Lender
         or Agent pursuant to this Agreement shall be





                                       62
<PAGE>   68


         limited, notwithstanding anything to the contrary in this Agreement or
         any other 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 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 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 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), 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; and

                 (v)          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 Loan Documents) by such Lender or Agent would cause such
         Lender to charge Borrower a criminal rate of interest, the 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 Lender or Agent, as applicable, and if
         received such affected Lender or Agent will return such funds to
         Borrower so that the rate of interest paid by Borrower shall not
         exceed a criminal rate of interest from the date this Agreement was
         entered into.

         SECTION 10.13.  NO ORAL AGREEMENTS.  THIS WRITTEN AGREEMENT AND
THE OTHER 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]





                                       63
<PAGE>   69


         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed by their respective authorized officers as of the day and year
first above written.

                                        APACHE CORPORATION


                                        By: /S/ Apache Corporation        
                                            -----------------------------------
                                        Name:    Matthew W. Dundrea
                                        Title:   Treasurer





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 1
<PAGE>   70



                                        THE CHASE MANHATTAN BANK,
                                        as Global Administrative Agent



                                        By: /S/ The Chase Manhattan Bank  
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 2
<PAGE>   71



                                        MORGAN GUARANTY TRUST
                                        COMPANY, as Global Documentation
                                        Agent and U.S. Syndication Agent


                                        By: /S/ Morgan Guaranty Trust Company
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 3
<PAGE>   72



                                      THE FIRST NATIONAL BANK OF
                                      CHICAGO, as U.S. Documentation Agent



                                      By: /S/ The First National Bank of Chicago
                                          ------------------------------------
                                      Name:
                                      Title:






                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 4
<PAGE>   73



                                        NATIONSBANK OF TEXAS, N.A., as
                                        Co-Agent


                                        By: /S/ Nationsbank of Texas, N.A.
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 5
<PAGE>   74




                              UNION BANK OF SWITZERLAND,
                              HOUSTON AGENCY, as Co-Agency



                              By: /S/ Union Bank of Switzerland, Houston Agency
                                  ---------------------------------------------
                              Name:
                              Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 6
<PAGE>   75



                                        THE CHASE MANHATTAN BANK, as
                                        Lender



                                        By: /S/ The Chase Manhattan Bank  
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 7
<PAGE>   76



                                          MORGAN GUARANTY TRUST
                                          COMPANY, as Lender


                                          By: /S/ Morgan Guaranty Trust Company
                                              ---------------------------------
                                          Name:
                                          Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 8
<PAGE>   77



                                     THE FIRST NATIONAL BANK
                                     OF CHICAGO, as Lender


                                     By: /S/ The First National Bank of Chicago
                                         --------------------------------------
                                     Name:
                                     Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 9
<PAGE>   78



                                        NATIONSBANK OF TEXAS, N.A., as
                                        Lender


                                        By: /S/ Nationsbank of Texas, N.A.
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 10
<PAGE>   79




                               UNION BANK OF SWITZERLAND,
                               HOUSTON AGENCY, as Lender


                               By: /S/ Union Bank of Switzerland Houston Agency
                                   -------------------------------------------- 
                               Name:
                               Title:


                               By: /S/ Union Bank of Switzerland Houston Agency
                                   -------------------------------------------- 
                               Name:
                               Title:






                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 11
<PAGE>   80



                            BANK OF AMERICA NATIONAL
                            TRUST AND SAVINGS
                            ASSOCIATION, as Lender


                            By:  /S/ Bank of America National Trust and Savings
                                     Association     
                                 ----------------------------------------------
                            Name:
                            Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 12
<PAGE>   81


                                        BANK OF MONTREAL, as Lender


                                        By: /S/ Bank of Montreal          
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 13
<PAGE>   82


                                        CITIBANK, N.A., as Lender


                                        By: /S/ Citibank, N.A.            
                                            -----------------------------------
                                        Name:
                                        Title:






                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 14


<PAGE>   83
                                        ROYAL BANK OF CANADA, as Lender


                                        By: /S/ Royal Bank of Canada      
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 15
<PAGE>   84



                                    ABN-AMRO BANK N.V. - HOUSTON
                                    AGENCY, as 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 U.S. CREDIT AGREEMENT]

                                     S - 16
<PAGE>   85


                                 THE BANK OF NOVA SCOTIA,
                                 ATLANTA AGENCY, as Lender


                                 By: /S/ The Bank of Nova Scotia Atlanta Agency
                                     ------------------------------------------
                                 Name:
                                 Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 17
<PAGE>   86


                                        CIBC INC. as Lender


                                        By: /S/ CIBC, Inc.                
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 18
<PAGE>   87


                                  CHRISTIANIA BANK OG
                                  KREDITKASSE, ASA, as Lender


                                  By:  /S/ Christiania Bank Og Kreditkasse, ASA
                                       ----------------------------------------
                                  Name:
                                  Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 19
<PAGE>   88


                                     SOCIETE GENERALE, SOUTHWEST 
                                     AGENCY, as Lender


                                     By: /S/ Societe Generale, Southwest Agency
                                         --------------------------------------
                                     Name:
                                     Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 20
<PAGE>   89


                                        BANQUE PARIBAS, as Lender


                                        By: /S/ Banque Paribas            
                                            -----------------------------------
                                        Name:
                                        Title:

                                        By: /S/ Banque Paribas            
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 21
<PAGE>   90


                                        COLORADO NATIONAL BANK, as
                                        Lender


                                        By: /S/ Colorado National Bank    
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 22
<PAGE>   91


                                THE FUJI BANK, LIMITED - 
                                HOUSTON AGENCY, as Lender


                                By: /S/ The Fuji Bank, Limited - Houston Agency
                                    -------------------------------------------
                                Name:
                                Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 23
<PAGE>   92


                                        UNION BANK OF CALIFORNIA, N.A.,
                                        as Lender


                                        By: /S/ Union Bank of California, N.A.
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 24
<PAGE>   93


                                        BANQUE NATIONALE DE PARIS, as
                                        Lender


                                        By: /S/ Banque Nationale de Paris 
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 25
<PAGE>   94


                                THE LONG-TERM CREDIT BANK OF
                                JAPAN, LTD., as Lender


                                By: /S/ The Long-Term Credit Bank of Japan, Ltd.
                                    -------------------------------------------
                                Name:
                                Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 26
<PAGE>   95


                             ISTITUTO BANCARIO SAN PAOLO
                             DI TORINO SPA, as Lender


                             By:  /S/ Istituto Bancario San Paolo Di Torino SpA
                                  ---------------------------------------------
                             Name:
                             Title:



                             By: /S/ Istituto Bancario San Paolo Di Torino SpA
                                 ----------------------------------------------
                             Name:
                             Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 27
<PAGE>   96


                                        THE SUMITOMO BANK, LIMITED,
                                        as Lender


                                        By: /S/ The Sumitomo Bank, Limited
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 28
<PAGE>   97


                                        TORONTO DOMINION (TEXAS), 
                                        INC., as Lender


                                        By: /S/ Toronto Dominion (Texas), Inc.
                                            -----------------------------------
                                        Name:
                                        Title:





                   [SIGNATURE PAGE TO U.S. CREDIT AGREEMENT]

                                     S - 29

<PAGE>   1





                                                                    EXHIBIT 10.2

                          [CANADIAN CREDIT AGREEMENT]

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


                                CREDIT AGREEMENT

                           dated as of June 12, 1997

                                     among

                              APACHE CANADA LTD.,

                           THE LENDERS PARTY HERETO,

                         MORGAN GUARANTY TRUST COMPANY,
                         as Global Documentation Agent,

                             ROYAL BANK OF CANADA,
                        as Canadian Documentation Agent,

                      THE CHASE MANHATTAN BANK OF CANADA,
                         as Canadian Syndication Agent,

                               BANK OF MONTREAL,
                       as Canadian Administrative Agent,

                                      and

                           THE CHASE MANHATTAN BANK,
                         as Global Administrative Agent



                             CHASE SECURITIES INC.,
                               as Global Arranger

                           JP MORGAN SECURITIES INC.,
                             as Global Co-Arranger


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



<TABLE>
<S>                  <C>                                                                                               <C>
ARTICLE I            Definitions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
         1.1.        Defined Terms  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
         1.2.        Classification of Loans and Borrowings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
         1.3.        Terms Generally  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
         1.4.        Accounting Terms; GAAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15

ARTICLE II           The Credits  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
         2.1.        Commitments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
         2.2.        Loans and Borrowings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
         2.3.        Requests for Borrowings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
         2.4.        [Intentionally omitted]  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         2.5.        Funding of Borrowings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         2.6.        Extension of Maturity Date and of Commitments  . . . . . . . . . . . . . . . . . . . . . . . . .  18
         2.7.        Interest Elections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
         2.8.        Termination and Reduction of Commitments . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
         2.9.        Repayment of Loans; Evidence of Debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
         2.10.       Prepayment of Loans  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
         2.11.       Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
         2.12.       Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
         2.13.       Alternate Rate of Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25
         2.14.       Increased Costs  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  26
         2.15.       Break Funding Payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
         2.16.       Taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
         2.17.       Payments Generally; Pro Rata Treatment; Sharing of Set-offs  . . . . . . . . . . . . . . . . . .  28
         2.18.       Mitigation Obligations; Replacement of Lenders . . . . . . . . . . . . . . . . . . . . . . . . .  30
         2.19.       Currency Conversion and Currency Indemnity . . . . . . . . . . . . . . . . . . . . . . . . . . .  31

ARTICLE III          Representations and Warranties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         3.1.        Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         3.2.        Authorization and Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         3.3.        Government Approval and Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         3.4.        Unfunded Pension Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         3.5.        Regulation U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33
         3.6.        Taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33
         3.7.        Subsidiaries; Restricted Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33

ARTICLE IV           Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33
         4.1.        Initial Loan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33

                                                                i
</TABLE>
<PAGE>   3
<TABLE>
<S>                  <C>                                                                                               <C>
         4.2.        All Loans  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35

ARTICLE V            Affirmative Covenants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         5.1.        Financial Reporting and Notices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         5.2.        Compliance with Laws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         5.3.        Maintenance of Properties  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         5.4.        Insurance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         5.5.        Books and Records  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         5.6.        Minimum Book Value for Assets of
                     Parent and its Restricted Subsidiaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         5.7.        Use of Proceeds  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38

ARTICLE VI           Financial Covenants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         6.1.        Minimum Tangible Net Worth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         6.2.        Ratio of Total Debt to Capital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39

ARTICLE VII          Negative Covenants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         7.1.        Liens  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         7.2.        Mergers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
         7.3.        Asset Dispositions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
         7.4.        Transactions with Affiliates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
         7.5.        Restrictive Agreements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
         7.6.        Guaranties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42

ARTICLE VIII         Events of Default  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
         8.1.        Listing of Events of Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
         8.2.        Action if Bankruptcy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         8.3.        Action if Other Event of Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44

ARTICLE IX           Agents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45

ARTICLE X            Miscellaneous  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         10.1.       Notices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         10.2.       Waivers; Amendments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
         10.3.       Expenses; Indemnity; Damage Waiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         10.4.       Successors and Assigns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
         10.5.       Survival . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         10.6.       Counterparts; Integration; Effectiveness . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         10.7.       Severability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
         10.8.       Right of Setoff  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
         10.9.       GOVERNING LAW; JURISDICTION; CONSENT TO SERVICE OF PROCESS . . . . . . . . . . . . . . . . . . .  55
         10.10.      Headings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56

                                                                ii

</TABLE>





<PAGE>   4
<TABLE>
         <S>         <C>                                                                                               <C>
         10.11.      Confidentiality  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
         10.12.      Interest Rate Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
         10.13.      NO ORAL AGREEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  58

                                                               iii
</TABLE>





<PAGE>   5
                             SCHEDULES AND EXHIBITS

<TABLE>
<CAPTION>
EXHIBITS:
<S>                  <C>
Exhibit A-1          Form of Legal Opinion of Bennett Jones Verchere
Exhibit A-2          Form of Legal Opinion of Chamberlain, Hrdlicka, White, Williams & Martin
Exhibit B            Form of Legal Opinion of Burnet, Duckworth & Palmer
Exhibit C            Form of Compliance Certificate
Exhibit D            Form of Assignment and Acceptance
Exhibit E            Form of Borrowing/Interest Election Request
Exhibit F            Form of Guaranty


SCHEDULES:

Schedule 2.1         Commitments
Schedule 3.7         Subsidiaries; Restricted Subsidiaries
Schedule 7.1         Liens

                                                                iv

</TABLE>





<PAGE>   6
                                CREDIT AGREEMENT

         THIS CREDIT AGREEMENT, dated as of June 12, 1997, is among APACHE
CANADA LTD., a corporation organized under the laws of the Province of Alberta,
Canada, the LENDERS (as defined below) party hereto, MORGAN GUARANTY TRUST
COMPANY, as Global Documentation Agent, ROYAL BANK OF CANADA, as Canadian
Documentation Agent, THE CHASE MANHATTAN BANK OF CANADA, as Canadian
Syndication Agent, BANK OF MONTREAL, as Canadian Administrative Agent, and THE
CHASE MANHATTAN BANK, as Global Administrative Agent.

         The parties hereto agree as follows:

                                   ARTICLE I

                                  Definitions

         SECTION 1.1.         Defined Terms.  As used in this Agreement, the
following terms have the meanings specified below:

         "ABR", when used in reference to any Loan or Borrowing, refers to
whether such Loan, or the Loans comprising such Borrowing, are bearing interest
at a rate determined by reference to the Alternate Base Rate.

         "Accepting Lenders" is defined in Section 2.6(c).

         "Adjusted LIBO Rate" means, with respect to any Eurodollar Borrowing
for any Interest Period, an interest rate per annum (rounded upwards, if
necessary, to the next 1/16 of 1%) equal to (a) the LIBO Rate for such Interest
Period multiplied by (b) the Statutory Reserve Rate.

         "Administrative Questionnaire" means an Administrative Questionnaire
in a form supplied by the Global Administrative Agent.

         "Affiliate" means, with respect to a specified Person, another Person
that directly, or indirectly through one or more intermediaries, Controls or is
Controlled by or is under common Control with the Person specified.

         "Agents" means each of the Global Administrative Agent, the Global
Documentation Agent, the Canadian Administrative Agent, the Canadian
Syndication Agent and the Canadian Documentation Agent.

         "Agreed Currency" is defined in Section 2.19(a).
<PAGE>   7
         "Agreement" means this Credit Agreement, as it may be amended,
supplemented, restated or otherwise modified and in effect from time to time.

         "Alternate Base Rate" means, for any day, a rate per annum equal to
the greatest of (a) the U.S. Base Rate in effect on such day and (b) the
Federal Funds Effective Rate in effect on such day plus  1/2 of 1%.  Any change
in the Alternate Base Rate due to a change in the U.S. Base Rate or the Federal
Funds Effective Rate shall be effective from and including the effective date
of such change in the U.S. Base Rate or the Federal Funds Effective Rate,
respectively.

         "Annual Certificate of Extension" means a certificate of Parent and
Borrower, executed by an Authorized Officer and delivered to the Global
Administrative Agent and the Canadian Administrative Agent, in a form
acceptable to the Global Administrative Agent and the Canadian Administrative
Agent, which requests an extension of the then scheduled Maturity Date pursuant
to Section 2.6.

         "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.

         "Applicable Percentage" means, with respect to any Lender, the
percentage of the total Commitments represented by such Lender's Commitment.
If the Commitments have terminated or expired, the Applicable Percentages shall
be determined based upon the Commitments most recently in effect, giving effect
to any assignments.

         "Applicable Rate" means, for any day, with respect to any Eurodollar
Loan, or with respect to the Facility Fees payable hereunder, as the case may
be, the applicable rate per annum set forth below under the caption "Eurodollar
Margin" or "Facility Fee", as the case may be, based upon the ratings by
Moody's, S&P and D&P, respectively, applicable on such date to the Index Debt:


<TABLE>
<CAPTION>
==============================================================================================================
                                                       Facility Fee (in basis     Eurodollar Margin (in basis
                 Index Debt Ratings:                           points)                      points)
- --------------------------------------------------------------------------------------------------------------
 <S>              <C>                                           <C>                          <C>
 Category 1:      A/A2                                          6.00                         16.50
- --------------------------------------------------------------------------------------------------------------
 Category 2:      A-/A3                                         8.00                         17.00
- --------------------------------------------------------------------------------------------------------------
 Category 3:      BBB+/Baa1                                     9.00                         18.50
==============================================================================================================
</TABLE>





                                       2
<PAGE>   8
<TABLE>
 <S>              <C>                                           <C>                          <C>
- --------------------------------------------------------------------------------------------------------------
 Category 4:      BBB/Baa2                                      12.00                        20.50
- --------------------------------------------------------------------------------------------------------------
 Category 5:      BBB-/Baa3                                     17.50                        25.00
- --------------------------------------------------------------------------------------------------------------
 Category 6:      Less than BBB-/Baa3                           25.00                        50.00
==============================================================================================================
</TABLE>

         For purposes of the foregoing, (i) if either Moody's, S&P or D&P shall
not have in effect a rating for the Index Debt (other than by reason of the
circumstances referred to in the last sentence of this definition), then such
rating agency shall be deemed to have established a rating in Category 6; (ii)
if the ratings established or deemed to have been established by Moody's, S&P
and D&P for the Index Debt shall fall within different Categories, the
Applicable Rate shall be based on the highest two ratings, unless the highest
two ratings shall fall within different Categories in which case the Applicable
Rate shall be based on the lower of the highest two ratings; and (iii) if the
ratings established or deemed to have been established by Moody's, S&P and D&P
for the Index Debt shall be changed (other than as a result of a change in the
rating system of Moody's, S&P or D&P), such change shall be effective as of the
date on which it is first announced by the applicable rating agency.  Each
change in the Applicable Rate shall apply during the period commencing on the
effective date of such change and ending on the date immediately preceding the
effective date of the next such change.  If the rating system of Moody's, S&P
or D&P shall change, or if any such rating agency shall cease to be in the
business of rating corporate debt obligations, Parent, Borrower and the Lenders
shall negotiate in good faith to amend this definition to reflect such changed
rating system or the unavailability of ratings from such rating agency and,
pending the effectiveness of any such amendment, the Applicable Rate shall be
determined by reference to the rating most recently in effect prior to such
change or cessation.

         "Assignment and Acceptance" means an assignment and acceptance entered
into by a Lender and an assignee (with the consent of any party whose consent
is required by Section 10.4), and accepted by the Canadian Administrative
Agent, in substantially the form of Exhibit D or any other form approved by the
Canadian Administrative Agent.

         "Australian Administrative Agent" means Citisecurities Limited (ACN
008 489 610) in its capacity as Australian administrative agent for the lenders
party to the Australian Credit Agreement and any successor thereto.

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

         "Australian Credit Agreement" means that certain Credit Agreement of
even date herewith among the Australian Borrower, the Australian Lenders, the
Global Administrative Agent, the Global Documentation Agent, the Australian
Administrative Agent, Bank of America National Trust and Savings Association,
Sydney Branch (ARBN 064 874 531), as Australian documentation





                                       3
<PAGE>   9
agent, and The Chase Manhattan Bank (ARBN 074 112 011) as Australian
syndication agent, 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, and the agreement with
respect to fees, 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 Borrower, the Chairman,
the President, the Vice President and Chief Financial Officer and the Treasurer
of Borrower, and any officer or employee of Borrower specified as such to the
Canadian Administrative Agent and Global Administrative Agent in writing by any
of the aforementioned officers of Borrower, or, with respect to Parent, the
Chairman, the Vice President and Chief Financial Officer and the Treasurer of
Parent, and any officer or employee of Parent specified as such to the Canadian
Administrative Agent and the Global Administrative Agent in writing by any of
the aforementioned officers of Parent.

         "Availability Period" means the period from and including the Global
Effective Date to but excluding the earlier of the Maturity Date and the date
of termination of the Commitments.

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

         "Borrowing" means Loans of the same Type, made, converted or continued
on the same date and, in the case of Eurodollar Loans, as to which a single
Interest Period is in effect.

         "Borrowing Request" means a request by Borrower for a Borrowing in
accordance with Section 2.3, in substantially the form of Exhibit E or any
other form approved by the Canadian Administrative Agent and the Global
Administrative Agent.

         "Business Day" means any day that is not a Saturday, Sunday or other
day on which commercial banks in Calgary, Toronto and New York are authorized
or required by law to remain closed; provided that, when used in connection
with a Eurodollar Loan, the term "Business Day" shall also exclude any day on
which banks are not open for dealings in dollar deposits in the London
interbank market.

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





                                       4
<PAGE>   10
         "Canadian Documentation Agent" means Royal Bank of Canada, in its
capacity as Canadian documentation agent for the Lenders hereunder.

         "Canadian Syndication Agent" means The Chase Manhattan Bank of Canada,
in its capacity as Canadian Syndication Agent for the Lenders hereunder.

         "Capital" means the consolidated shareholder's equity of Parent and
its Subsidiaries plus the consolidated Debt of Parent and its Subsidiaries.

         "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 GAAP.

         "CERCLA" means the Comprehensive Environmental Response, Compensation
and Liability Act of 1980, 42 U.S.C.  Section  9601, et. seq., as amended from
time to time.

         "Change in Law" means (a) the adoption of any law, rule or regulation
after the date of this Agreement, (b) any change in any law, rule or regulation
or in the interpretation or application thereof by any Governmental Authority
after the date of this Agreement or (c) compliance by any Lender (or, for
purposes of Section 2.16(b), by any lending office of such Lender or by such
Lender's holding company, if any) with any request, guideline or directive
(whether or not having the force of law) of any Governmental Authority made or
issued after the date of this Agreement.

         "Combined Commitments" means, with respect to each Combined Lender,
the commitment of such Combined Lender to make Loans (or in the case of U.S.
Lenders, "Revolving Loans" (as defined in the U.S. Credit Agreement)),
expressed as an amount representing the maximum aggregate amount of such
Combined Lender's Credit Exposure (or in the case of the U.S. Lender's,
"Revolving Credit Exposure" (as defined in the U.S. Credit Agreement)) under
the Combined Credit Agreements, as such commitment may be reduced, increased or
terminated from time to time pursuant to the Global Loan Documents.  The
initial amount of each Combined Lender's Commitment is set forth on Schedule
2.1 to the applicable Combined Credit Agreement, or in a Assignment and
Acceptance (as defined in this Agreement and the U.S. Credit Agreement) or in a
Substitution Certificate (as defined in the Australian Credit Agreement)
pursuant to which such Combined Lender shall have assumed its Combined
Commitment, as applicable.  The initial aggregate amount of the Combined
Lenders' Combined Commitments is $1,000,000,000.

         "Combined Credit Agreements" means this Agreement, the Australian
Credit Agreement and the U.S. Credit Agreement.

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





                                       5
<PAGE>   11
         "Combined Loan Documents" means the Loan Documents, the Australian
Loan Documents and the U.S. Loan Documents.

         "Combined Loans" means the loans made by the Combined Lenders to
Borrower, Parent and Australian Borrower pursuant to the Combined Loan
Documents.

         "Combined Required Lenders" means Combined Lenders having in the
aggregate 51% of the aggregate total Combined Commitments under the Combined
Loan Documents, or, if the Combined Commitments have been terminated, Combined
Lenders holding 51% of the aggregate unpaid principal amount of the outstanding
Combined Loans under the Combined Loan Documents.

         "Commitment" means, with respect to each Lender, the commitment of
such Lender to make Loans, expressed as an amount representing the maximum
aggregate amount of such Lender's Credit Exposure hereunder, as such commitment
may be (a) reduced from time to time pursuant to Section 2.8, (b) reduced or
increased from time to time pursuant to assignments by or to such Lender
pursuant to Section 10.4 and (c) terminated pursuant to Sections 8.2 or 8.3.
The initial amount of each Lender's Commitment is set forth on Schedule 2.1, or
in the Assignment and Acceptance pursuant to which such Lender shall have
assumed its Commitment, as applicable.  The initial aggregate amount of the
Lenders' Commitments is $125,000,000.

         "Consolidated Tangible Net Worth" means (i) the consolidated
shareholder's equity of Parent and its Subsidiaries (determined in accordance
with GAAP), less (ii) the amount of consolidated intangible assets of Parent
and its Subsidiaries, plus (iii) the aggregate amount of any non-cash write
downs, on a consolidated basis, by Parent and its Subsidiaries during the term
hereof.

         "Control" means the possession, directly or indirectly, of the power
to direct or cause the direction of the management or policies of a Person,
whether through the ability to exercise voting power, by contract or otherwise.
"Controlling" and "Controlled" have meanings correlative thereto.

         "Credit Exposure" means, with respect to any Lender at any time, the
sum of the outstanding principal amount of such Lender's Loans at such time.

         "Debt" of any Person means indebtedness, including capital leases,
shown as debt on a consolidated balance sheet of such Person prepared in
accordance with GAAP.

         "Declining Lenders" is defined in Section 2.6(c).

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





                                       6
<PAGE>   12
         "dollars" or "$" refers to lawful money of the United States of
America.

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

         "Environmental Laws" means all applicable federal, state, provincial,
territorial or local statutes, laws, ordinances, codes, rules and regulations
(including consent decrees and administrative orders) relating to public health
and safety and protection of the environment (including, for example and
without limitation, the Environmental Protection and Enhancement Act (Alberta)
and the Canadian Environmental Protection Act).

         "Environmental Liability" means any liability, contingent or otherwise
(including any liability for damages, costs of environmental remediation,
fines, penalties or indemnities), of Borrower or any Subsidiary directly or
indirectly resulting from or based upon (a) violation of any Environmental Law,
(b) the generation, use, handling, transportation, storage, treatment or
disposal of any Hazardous Materials, (c) exposure to any Hazardous Materials,
(d) the release or threatened release of any Hazardous Materials into the
environment or (e) any contract, agreement or other consensual arrangement
pursuant to which liability is assumed or imposed with respect to any of the
foregoing.

         "Eurodollar", when used in reference to any Loan or Borrowing, refers
to whether such Loan, or the Loans comprising such Borrowing, are bearing
interest at a rate determined by reference to the Adjusted LIBO Rate.

         "Event of Default" has the meaning assigned to such term in Article
VIII.

         "Excluded Taxes" means, with respect to any Agent, any Lender or any
other recipient of any payment to be made by or on account of any obligation of
Borrower hereunder, (a) income or franchise taxes imposed on (or measured by)
its net income by the federal, or any provincial, government of Canada, or by
the jurisdiction under the laws of which such recipient is organized or in
which its principal office is located or, in the case of any Lender, in which
its applicable lending office is located, (b) any branch profits taxes imposed
by the federal, or any provincial, government of Canada or any similar tax
imposed by any other jurisdiction in which Borrower is located and (c) in the
case of a Foreign Lender (other than an assignee pursuant to a request by
Borrower under Section 2.18(b)), any withholding tax that is imposed on amounts
payable to such Foreign Lender at the time such Foreign Lender becomes a party
to this Agreement (or designates a new lending office) or is attributable to
such Foreign Lender's failure to comply with Section 2.16(e), except to the
extent that such Foreign Lender (or its assignor, if any) was entitled, at the
time of designation of a new lending office (or assignment), to receive
additional amounts from Borrower with respect to such withholding tax pursuant
to Section 2.16(a).

         "Existing Global Credit Facilities" means (i) that certain Fourth
Amended and Restated Credit Agreement, dated as October 31, 1996, among Parent,
the lenders party thereto, The First





                                       7
<PAGE>   13
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, (ii) that certain Credit Agreement, dated as
October 31, 1996, among the Australian Borrower, the lenders party thereto, The
First National Bank of Chicago, as global administrative agent, Chase
Securities Australia Limited (ACN 002 888 011), as Australian administrative
agent, First Chicago Capital Markets, Inc., as arranger, and Chase Securities
Inc., as arranger, and (iii) that certain Credit Agreement, dated as October
31, 1996, among the Borrower, the lenders party thereto, The First National
Bank of Chicago, as global administrative agent, Bank of Montreal, as Canadian
administrative agent, First Chicago Capital Markets, Inc., as arranger, and
Chase Securities Inc., as arranger.

         "Facility Fee" is defined in Section 2.11.

         "Federal Funds Effective Rate" means, for any day, the weighted
average (rounded upwards, if necessary, to the next 1/100 of 1%) of the rates
on overnight Federal funds transactions with members of the Federal Reserve
System arranged by Federal funds brokers, as published on the next succeeding
Business Day by the Federal Reserve Bank of New York, or, if such rate is not
so published for any day that is a Business Day, the average (rounded upwards,
if necessary, to the next 1/100 of 1%) of the quotations for such day for such
transactions received by the Global Administrative Agent from three Federal
funds brokers of recognized standing selected by it.

         "Foreign Lender" means any Lender that is not a resident in Canada for
purposes of the Income Tax Act (Canada).  For purposes of this definition,
Canada and each Province thereof shall be deemed to constitute a single
jurisdiction.

         "GAAP" means generally accepted accounting principles as in effect
from time to time, applied on a basis consistent with the most recent financial
statements of Parent, Borrower and their Subsidiaries delivered to the Lenders
pursuant hereto.

         "Global Administrative Agent" means The Chase Manhattan Bank, in its
capacity as global administrative agent for the Combined Lenders.

         "Global Documentation Agent" means Morgan Guaranty Trust Company, in
its capacity as global documentation agent for the Lenders hereunder.

         "Global Effective Date" means a date agreed upon by Parent, Borrower,
the Canadian Administrative Agent and the Global Administrative Agent as the
date on which the conditions specified in Section 4.1 of each Combined Credit
Agreement are satisfied (or waived in accordance with Section 10.2 of each
Combined Credit Agreement).

         "Global Effectiveness Notice" means a notice and certificate of Parent
and Borrower properly executed by an Authorized Officer of Parent and Borrower,
respectively, addressed to





                                       8
<PAGE>   14
the Combined Lenders and delivered to the Global Administrative Agent and the
Canadian Administrative Agent, in sufficient number of counterparts to provide
one for each such lender and each agent under each Combined Credit Agreement,
whereby Parent certifies satisfaction of all the conditions precedent to the
effectiveness under Section 4.1 of each Combined Credit Agreement.

         "Governmental Authority" means the government of Canada, any other
nation or any political subdivision thereof, whether state, provincial,
territorial or local, and any agency, authority, instrumentality, regulatory
body, court, central bank or other entity exercising executive, legislative,
judicial, taxing, regulatory or administrative powers or functions of or
pertaining to government.

         "Guaranty" means that certain Guaranty, dated as of June 12, 1997, by
Parent in favor of the Lenders and the other Lender Parties (as defined
therein), in substantially the form of Exhibit F or any other form approved by
the Global Administrative Agent and the Canadian Administrative Agent, 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; or (c) any pollutant or contaminant or hazardous, dangerous
or toxic chemical, material or substance within the meaning of any other
Environmental Law.

         "Indebtedness" of any Person means all (i) Debt, and (ii) guaranties
or other contingent obligations in respect of the Debt of any other Person.

         "Indemnified Taxes" means Taxes other than Excluded Taxes.

         "Index Debt" means senior, unsecured, non-credit enhanced, long-term
indebtedness for borrowed money of Parent that is not guaranteed by any other
Person or subject to any other credit enhancement.

         "Interest Election Request" means a request by Borrower to convert or
continue a Borrowing in accordance with Section 2.7, in substantially the form
of Exhibit E or any other form approved by the Global Administrative Agent and
the Canadian Administrative Agent.

         "Interest Payment Date" means (a) with respect to any ABR Loan, the
last day of each March, June, September and December, and (b) with respect to
any Eurodollar Loan, the last day of the Interest Period applicable to the
Borrowing of which such Loan is a part and, in the case of a Eurodollar
Borrowing with an Interest Period of more than three (3) months' duration, each
day prior to the last day of such Interest Period that occurs at intervals of
three (3) months' duration after the first day of such Interest Period.





                                       9
<PAGE>   15
         "Interest Period" means the period commencing on the date of any
Eurodollar Borrowing and ending on the numerically corresponding day, or, with
the consent of the Canadian Administrative Agent, such other day, in the
calendar month that is one, two, three or six months (or, with the consent of
each Lender, nine or twelve months) thereafter, as Borrower may elect,
provided, that (i) if any Interest Period would end on a day other than a
Business Day, such Interest Period shall be extended to the next succeeding
Business Day unless such next succeeding Business Day would fall in the next
calendar month, in which case such Interest Period shall end on the next
preceding Business Day and (ii) any Interest Period that commences on the last
Business Day of a calendar month (or on a day for which there is no numerically
corresponding day in the last calendar month of such Interest Period) shall end
on the last Business Day of the last calendar month of such Interest Period.
For purposes hereof, the date of a Borrowing initially shall be the date on
which such Borrowing is made and thereafter shall be the effective date of the
most recent conversion or continuation of such Borrowing.

         "Judgment Currency" is defined in Section 2.19(b).

         "Lenders" means the Persons listed on Schedule 2.1 and any other
Person that shall have become a party hereto pursuant to an Assignment and
Acceptance, other than any such Person that ceases to be a party hereto
pursuant to an Assignment and Acceptance.

         "LIBO Rate" means, with respect to any Eurodollar Borrowing for any
Interest Period, the rate appearing on Page 3750 of the Telerate Service (or on
any successor or substitute page of such Service, or any successor to or
substitute for such Service, providing rate quotations comparable to those
currently provided on such page of such Service, as reasonably determined by
the Global Administrative Agent, the Canadian Administrative Agent and the
Borrower from time to time for purposes of providing quotations of interest
rates applicable to dollar deposits in the London interbank market) at
approximately 11:00 a.m., London time, two Business Days prior to the
commencement of such Interest Period, as the rate for dollar deposits with a
maturity comparable to such Interest Period.  In the event that such rate is
not available at such time for any reason, then the "LIBO Rate" with respect to
such Eurodollar Borrowing for such Interest Period shall be the rate at which
dollar deposits of $5,000,000 and for a maturity comparable to such Interest
Period are offered by the principal London office of the Global Administrative
Agent in immediately available funds in the London interbank market at
approximately 11:00 a.m., London time, two Business Days prior to the
commencement of such Interest Period.

         "Lien" means any mortgage, pledge, lien, encumbrance, charge, or
security interest of any kind, granted or created to secure Indebtedness;
provided, however, that, with respect to any prohibitions of Liens on Property,
the following transactions shall not be deemed to create a Lien to secure
Indebtedness; (i) production payments and (ii) liens required by statute and
created in favor of Canadian governmental entities to secure partial, progress,
advance, or other payments intended to be used primarily in connection with air
or water pollution control.





                                       10
<PAGE>   16
         "Loan Document" means this Agreement, the Guaranty, any Borrowing
Request, any Interest Election Request, any Annual Certificate of Extension,
any Assignment and Acceptance, any election notice, the agreement with respect
to fees described in Section 2.11(b), and each other agreement, document or
instrument delivered by Borrower or any other Person in connection with this
Agreement, as such may be amended from time to time.

         "Loans" means the loans made by the Lenders to Borrower pursuant to
this Agreement.

         "Material Adverse Effect" means, as to any matter, that such matter
could reasonably be expected to materially and adversely affect the assets,
business, properties, condition (financial or otherwise) of Parent and its
Subsidiaries taken as a whole.  No matter shall be considered to result, or be
expected to result, in a Material Adverse Effect unless such matter causes
Parent and its Subsidiaries, on a consolidated basis, to suffer a loss or incur
a cost equal to at least ten percent (10%) of Parent's Consolidated Tangible
Net Worth.

         "Maturity Date" means the Original Maturity Date, or such other later
date as may result from any extension requested by Borrower and Parent and
consented to by the Lenders pursuant to Section 2.6.

         "Moody's" means Moody's Investors Service, Inc.

         "Obligations" means, at any time, the sum of (i) the outstanding
principal amount of any Loans plus (ii) all accrued and unpaid interest and
Facility Fees plus (iii) all other obligations of Borrower or any Subsidiary to
any Lender or any Agent, whether or not contingent, arising under or in
connection with any of the Loan Documents.

         "Original Maturity Date" means June 12, 2002.

         "Other Currency" is defined in Section 2.19(a).

         "Other Taxes" means any and all present or future stamp or documentary
taxes or any other excise or property taxes, charges or similar levies arising
from any payment made hereunder or from the execution, delivery or enforcement
of, or otherwise with respect to, this Agreement.

         "Parent" means Apache Corporation, a corporation organized under the
laws of the State of Delaware.

         "Person" means any natural person, corporation, limited liability
company, joint venture, partnership, firm, association, trust, government,
governmental agency or any other entity, whether acting in an individual,
fiduciary or other capacity.

         "Property" means (i) any property owned or leased by Borrower or any
Subsidiary, or any interest of Borrower or any Subsidiary in property, which is
considered by Borrower to be 





                                       11
<PAGE>   17
capable of producing oil, gas, or minerals in commercial quantities, (ii) any
interest of Borrower or any Subsidiary in any refinery, processing or
manufacturing plant owned or leased by Borrower or any manufacturing plant owned
or leased by Borrower or any Subsidiary, (iii) any interest of Borrower or any
Subsidiary in all present and future oil, gas, other liquid and gaseous
hydrocarbons, and other minerals now or hereafter produced from any other
Property or to which Borrower or any Subsidiary may be entitled as a result of
its ownership of any Property, and (iv) all real and personal assets owned or
leased by Borrower or any Subsidiary used in the drilling, gathering,
processing, transportation, or marketing of any oil, gas, and other hydrocarbons
or minerals, except (a) any such real or personal assets related thereto
employed in transportation, distribution or marketing or (b) any interest of
Borrower or any Subsidiary in, any refinery, processing or manufacturing plant,
or portion thereof, which property described in clauses (a) or (b), in the
opinion of the Board of Directors of Borrower, is not a principal plant or
principal facility in relation to the activities of Borrower and its
Subsidiaries taken as a whole.

         "Register" has the meaning set forth in Section 10.4.

         "Regulation U" means any of Regulations G, T, U or X of the Board of
Governors of the Federal Reserve System of the United States from time to time
in effect and shall include any successor or other regulations or official
interpretations of said Board 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.

         "Related Parties" means, with respect to any specified Person, such
Person's Affiliates and the respective directors, officers, employees, agents
and advisors of such Person and such Person's Affiliates.

         "Replacement Lenders" is defined in Section 2.6(c)(ii).

         "Required Lenders" means Lenders having in the aggregate 51% of the
aggregate total Commitments, or, if the Commitments have been terminated,
Lenders holding 51% of the aggregate unpaid principal amount of the outstanding
Obligations.

         "Resource Conservation and Recovery Act" means the Resource
Conservation and Recovery Act, 42 U.S.C. Section 690, et seq., as amended from
time to time.

         "Restricted Subsidiary" means any Subsidiary of Borrower or Parent
that owns any asset representing or consisting of an entitlement to production
from, or other interest in, reserves of oil, gas or other minerals in place
located in the United States, Canada or Australia or is otherwise designated in
writing by Parent to the Global Administrative Agent.

         "S&P" means Standard & Poor's and any successor thereto that is a
nationally-recognized rating agency.





                                       12
<PAGE>   18
         "Statutory Reserve Rate" means a fraction (expressed as a decimal),
the numerator of which is the number one and the denominator of which is the
number one minus the aggregate of the applicable maximum reserve percentages
(including any basic, marginal, special, emergency or supplemental reserves)
expressed as a decimal with respect to the Adjusted LIBO Rate, for eurocurrency
funding.  Eurodollar Loans shall be deemed to constitute eurocurrency funding
and to be subject to such reserve requirements without benefit of or credit for
proration, exemptions or offsets that may be available from time to time.  The
Statutory Reserve Rate shall be adjusted automatically on and as of the
effective date of any change in any reserve percentage.

         "subsidiary" means, with respect to any Person, any corporation or
other similar entity of which more than 50% of the outstanding capital stock
(or other equity) having ordinary voting power to elect a majority of the Board
of Directors of such corporation or entity (irrespective of whether or not at
the time capital stock or any other class or classes of such corporation or
entity shall or might have voting power upon the occurrence of any contingency)
is at the time directly or indirectly owned by such Person.

         "Subsidiary" means any subsidiary of Borrower or Parent.

         "Taxes" means any and all present or future taxes, levies, imposts,
duties, deductions, charges or withholdings imposed by any Governmental
Authority.

         "Transactions" means the execution, delivery and performance by
Borrower of this Agreement and the other Loan Documents, the borrowing of Loans
and the use of the proceeds thereof.

         "Type", when used in reference to any Loan or Borrowing, refers to
whether the rate of interest on such Loan, or on the Loans comprising such
Borrowing, is determined by reference to the Adjusted LIBO Rate or the
Alternate Base Rate.

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

         "Unrestricted Subsidiary" means any Subsidiary of Borrower that is not
a Restricted Subsidiary.

         "U.S. Base Rate" means the rate of interest per annum announced from
time to time 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; each change in the U.S. Base Rate shall be effective from and
including the date such change is announced as being effective.

         "U.S. Credit Agreement" means that certain Credit Agreement of even
date herewith among the Parent, the U.S.  Lenders, the Global Administrative
Agent, the Global Documentation Agent, the U.S. Documentation Agent, the U.S.
Syndication Agent, NationsBank of Texas, N.A.,





                                       13
<PAGE>   19
as Co-agent, and Union Bank of Switzerland, Houston Agency, as Co-agent, as it
may be amended, supplemented, restated or otherwise modified and in effect from
time to time.

         "U.S. Documentation Agent" means The First National Bank of Chicago,
in its capacity as U.S. documentation agent for the Lenders hereunder.

         "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
assignment agreements, and the agreement with respect to fees, 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. Syndication Agent" means Morgan Guaranty Trust Company, in its
capacity as U.S. syndication agent for the Lenders hereunder.

         SECTION 1.2.         Classification of Loans and Borrowings.  For
purposes of this Agreement, Loans may be classified and referred to by Type
(e.g., a "Eurodollar Loan").  Borrowings also may be classified and referred to
by Type (e.g., a "Eurodollar Borrowing").

         SECTION 1.3.         Terms Generally.  The definitions of terms herein
shall apply equally to the singular and plural forms of the terms defined.
Whenever the context may require, any pronoun shall include the corresponding
masculine, feminine and neuter forms.  The words "include", "includes" and
"including" shall be deemed to be followed by the phrase "without limitation".
The word "will" shall be construed to have the same meaning and effect as the
word "shall".  Unless the context requires otherwise (a) any definition of or
reference to any agreement, instrument or other document herein shall be
construed as referring to such agreement, instrument or other document as from
time to time amended, supplemented or otherwise modified (subject to any
restrictions on such amendments, supplements or modifications set forth
herein), (b) any reference herein to any Person shall be construed to include
such Person's successors and assigns, (c) the words "herein", "hereof" and
"hereunder", and words of similar import, shall be construed to refer to this
Agreement in its entirety and not to any particular provision hereof, (d) all
references herein to Articles, Sections, Exhibits and Schedules shall be
construed to refer to Articles and Sections of, and Exhibits and Schedules to,
this Agreement and (e) the words "asset" and "property" shall be construed to
have the same meaning and effect and to refer to any and all tangible and
intangible assets and properties, including cash, securities, accounts and
contract rights.

         SECTION 1.4.         Accounting Terms; GAAP.  Except as otherwise
expressly provided herein, all terms of an accounting or financial nature shall
be construed in accordance with GAAP, as in effect from time to time; provided
that, if Borrower notifies the Canadian Administrative





                                       14
<PAGE>   20
Agent and the Global Administrative Agent that Borrower requests an amendment
to any provision hereof to eliminate the effect of any change occurring after
the date hereof in GAAP or in the application thereof on the operation of such
provision (or if the Canadian Administrative Agent and the Global
Administrative Agent notify Borrower that the Required Lenders request an
amendment to any provision hereof for such purpose), regardless of whether any
such notice is given before or after such change in GAAP or in the application
thereof, then such provision shall be interpreted on the basis of GAAP as in
effect and applied immediately before such change shall have become effective
until  such notice shall have been withdrawn or such provision amended in
accordance herewith.

                                  ARTICLE II

                                  The Credits

         SECTION 2.1.         Commitments.  Subject to the terms and conditions
set forth herein, each Lender agrees to make Loans in U.S. Dollars to Borrower
from time to time during the Availability Period in an aggregate principal
amount that will not result in (a) such Lender's Credit Exposure exceeding such
Lender's Commitment or (b) the Credit Exposures exceeding the total
Commitments.  Within the foregoing limits and subject to the terms and
conditions set forth herein, Borrower may borrow, prepay and reborrow Loans.

         SECTION 2.2.         Loans and Borrowings.

         (a)     Each Loan shall be made as part of a Borrowing consisting of
Loans made by the Lenders ratably in accordance with their respective
Commitments.  The failure of any Lender to make any Loan required to be made by
it shall not relieve any other Lender of its obligations hereunder; provided
that the Commitments of the Lenders are several and no Lender shall be
responsible for any other Lender's failure to make Loans as required.

         (b)     Subject to Section 2.13, each Borrowing shall be comprised
entirely of ABR Loans or Eurodollar Loans as Borrower may request in accordance
herewith.  Each Lender at its option may make any Eurodollar Loan by causing
any domestic or foreign branch or Affiliate of such Lender to make such Loan;
provided that any exercise of such option shall not affect the obligation of
Borrower to repay such Loan in accordance with the terms of this Agreement.

         (c)     At the commencement of each Interest Period for any Eurodollar
Borrowing, such Borrowing shall be in an aggregate amount that is an integral
multiple of $1,000,000 and not less than $5,000,000 (including any continuation
or conversion of existing Loans made in connection therewith).  At the time
that each ABR Borrowing is made, such Borrowing shall be in an aggregate amount
that is an integral multiple of $1,000,000 and not less than $5,000,000
(including any continuation or conversion of existing Loans made in connection
therewith); provided that an ABR Borrowing may be in an aggregate amount that
is equal to the entire unused balance of the total Commitments.  Borrowings of
more than one Type may be outstanding at the





                                       15
<PAGE>   21
same time; provided that there shall not at any time be more than a total of
ten (10) Eurodollar Borrowings outstanding.

         (d)     Notwithstanding any other provision of this Agreement,
Borrower shall not be entitled to request, or to elect to convert or continue,
any Borrowing if the Interest Period requested with respect thereto would end
after the Maturity Date.

         SECTION 2.3.         Requests for Borrowings.   To request a
Borrowing, Borrower shall notify the Canadian Administrative Agent of such
request by telephone (a) in the case of a Eurodollar Borrowing, not later than
1:00 p.m., Toronto time, three Business Days before the date of the proposed
Borrowing or (b) in the case of an ABR Borrowing, not later than noon, Toronto
time, on the date of the proposed Borrowing.  Each such telephonic Borrowing
Request shall be irrevocable and shall be confirmed promptly by hand delivery
or telecopy to the Canadian Administrative Agent of a written Borrowing Request
in a form approved by the Canadian Administrative Agent and signed by Borrower.
Each such telephonic and written Borrowing Request shall specify the following
information in compliance with Section 2.2:

                 (i)          the aggregate amount of the requested Borrowing;

                 (ii)         the date of such Borrowing, which shall be a
         Business Day;

                 (iii)        whether such Borrowing is to be an ABR Borrowing
         or a Eurodollar Borrowing; and

                 (iv)         in the case of a Eurodollar Borrowing, the
         initial Interest Period to be applicable thereto, which shall be a
         period contemplated by the definition of the term "Interest Period".

If no election as to the Type of Borrowing is specified, then the requested
Borrowing shall be an ABR Borrowing.  If no Interest Period is specified with
respect to any requested Eurodollar Borrowing, then Borrower shall be deemed to
have selected an Interest Period of one month's duration.  Promptly following
receipt of a Borrowing Request in accordance with this Section, the Canadian
Administrative Agent shall advise each Lender of the details thereof and of the
amount of such Lender's Loan to be made as part of the requested Borrowing.

         SECTION 2.4.         [Intentionally omitted].

         SECTION 2.5.         Funding of Borrowings.

         (a)     Each Lender shall make each Loan to be made by it hereunder on
the proposed date thereof by wire transfer of immediately available funds by
1:00 p.m., Toronto time, to the account of the Canadian Administrative Agent
most recently designated by it for such purpose by notice to the Lenders.  The
Canadian Administrative Agent will make such Loans available to





                                       16
<PAGE>   22
Borrower by promptly crediting the amounts so received, in like funds, to an
account of Borrower designated by Borrower from time to time in a written
notice to the Canadian Administrative Agent executed by two Authorized
Officers.

         (b)     Unless the Canadian Administrative Agent shall have received
notice from a Lender prior to the proposed date of any Borrowing that such
Lender will not make available to the Canadian Administrative Agent such
Lender's share of such Borrowing, the Canadian Administrative Agent may assume
that such Lender has made such share available on such date in accordance with
paragraph (a) of this Section and may, in reliance upon such assumption, make
available to Borrower a corresponding amount.  In such event, if a Lender has
not in fact made its share of the applicable Borrowing available to the
Canadian Administrative Agent, then the applicable Lender and Borrower
severally agree to pay to the Canadian Administrative Agent forthwith on demand
such corresponding amount with interest thereon, for each day from and
including the date such amount is made available to Borrower to but excluding
the date of payment to the Canadian Administrative Agent, at (i) in the case of
such Lender, the greater of the Federal Funds Effective Rate or a rate
determined by the Canadian Administrative Agent in accordance with banking
industry rules in Canada on interbank compensation or (ii) in the case of
Borrower, the interest rate applicable to Loans made in such Borrowing.  If
such Lender pays such amount to the Canadian Administrative Agent, then such
amount shall constitute such Lender's Loan included in such Borrowing.

         SECTION 2.6.         Extension of Maturity Date and of Commitments.

         (a)     Subject to the other provisions of this Agreement and provided
that no Event of Default has occurred and is continuing, the total Commitments
shall be effective for an initial period from the Global Effective Date to the
Original Maturity Date; provided that the Maturity Date, and concomitantly the
total Commitments, may be extended for successive one year periods expiring on
the date which is one (1) year from the then scheduled Maturity Date.  If
Parent and Borrower shall request in an Annual Certificate of Extension
delivered to the Canadian Administrative Agent and the Global Administrative
Agent at least 45 days prior to the date which is four years prior to the
Maturity Date that the Maturity Date be extended for one year from the then
scheduled Maturity Date, then the Canadian Administrative Agent shall promptly
notify each Lender of such request and each Lender shall notify the Canadian
Administrative Agent, no later than 30 days prior to the date which is four
years prior to the Maturity Date, whether such Lender, in the exercise of its
sole discretion, will extend the Maturity Date for such one year period.  Any
Lender which shall not timely notify the Canadian Administrative Agent whether
it will extend the Maturity Date shall be deemed to not have agreed to extend
the Maturity Date.  No Lender shall have any obligation whatsoever to agree to
extend the Maturity Date.  Any agreement to extend the Maturity Date by any
Lender shall be irrevocable, except as provided in Section 2.6(c).

         (b)     If all Lenders notify the Canadian Administrative Agent
pursuant to clause (a) of this Section 2.6 of their agreement to extend the
Maturity Date, then the Canadian Administrative





                                       17
<PAGE>   23
Agent shall so notify the Global Administrative Agent, each Lender and
Borrower, and such extension shall be effective without other or further action
by any party hereto for such additional one year period.

         (c)     If Lenders constituting at least the Required Lenders approve
the extension of the then scheduled Maturity Date (such Lenders agreeing to
extend the Maturity Date herein called the "Accepting Lenders") and if one or
more Lenders shall notify, or be deemed to notify, the Canadian Administrative
Agent pursuant to clause (a) of this Section 2.6 that they will not extend the
then scheduled Maturity Date (such Lenders herein called the "Declining
Lenders"), then (A) the Canadian Administrative Agent shall promptly so notify
Borrower and the Accepting Lenders, (B) the Accepting Lenders shall, upon
Borrower's election to extend the then scheduled Maturity Date in accordance
with clause (i) or (ii) below, extend the then scheduled Maturity Date and (C)
Borrower shall, pursuant to a notice delivered to the Canadian Administrative
Agent, the Accepting Lenders and the Declining Lenders, no later than the tenth
(10th) day following the date by which each Lender is required, pursuant to
Section 2.6(a), to approve or disapprove the requested extension of the total
Commitments, either:

                 (i)          elect to extend the Maturity 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 Maturity Date except for the operation
         of this Section 2.6.  On such date, (x) Borrower shall deliver a
         notice of the effectiveness of such termination to the Declining
         Lenders with a copy to the Canadian Administrative Agent and (y)
         Borrower shall pay in full in immediately available funds all
         Obligations of Borrower owing to the Declining Lenders, including any
         amounts required pursuant to Section 2.15,  and (z) upon the
         occurrence of the events set forth in clauses (x) and (y), the
         Declining Lenders shall each cease to be a Lender hereunder for all
         purposes, other than for purposes of Sections 2.14 through 2.17,
         Section 2.19 and Section 10.3, and shall cease to have any obligations
         or any Commitment hereunder, other than to the Agents pursuant to
         Article IX, and the Canadian Administrative Agent shall promptly
         notify the Accepting Lenders and Borrower of the new Commitments; or

                 (ii)         elect to extend the Maturity Date with respect to
         the Accepting Lenders and, prior to or no later than the then
         scheduled Maturity 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 (such lenders herein
         called the "Replacement Lenders") and (B) Borrower shall pay in full
         in immediately available funds all Obligations of Borrower owing to
         any 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 Declining Lender's or Declining
         Lenders' rights and obligations 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 Obligations payable to such Declining Lender
         or Declining Lenders plus any accrued but





                                       18
<PAGE>   24
         unpaid interest on such Obligations and accrued but unpaid fees or
         other amounts owing in respect of such Declining Lender's or Declining
         Lenders' Loans and Commitments hereunder, and (y) upon the payment of
         such amounts referred to in clause(x) and the execution of an
         Assignment and Acceptance by the Replacement Lender or Replacement
         Lenders and the Declining Lender or Declining Lenders, the Replacement
         Lender or Replacement Lenders shall each constitute a Lender hereunder
         and the Declining Lender or Declining Lenders being so replaced shall
         no longer constitute a Lender (other than for purposes of Sections
         2.14 through 2.17, Section 2.19 and Section 10.3), and shall no longer
         have any obligations hereunder, other than to the Agents pursuant to
         Article IX; 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 Canadian Administrative Agent and
         the Global Administrative Agent (which shall promptly notify the
         Lenders thereof) no later than the tenth (10th) day following the date
         by which each Lender is required, pursuant to Section 2.6(a), to
         approve or disapprove the requested extension of the Maturity Date,
         and concomitantly the total Commitments.

         If Borrower fails to timely provide the election notice referred to in
this clause(c), Borrower 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 Maturity Date, and the concomitant total Commitments, with
respect to the Accepting Lenders, and, on the then scheduled Maturity Date,
Borrower shall repay in full all Obligations under the Loan Documents.

         SECTION 2.7.         Interest Elections.

         (a)     Each Borrowing initially shall be of the Type specified in the
applicable Borrowing Request (or an ABR Borrowing if no Type is specified) and,
in the case of a Eurodollar Borrowing, shall have an initial Interest Period as
specified in such Borrowing Request (or one month if no Interest Period is
specified).  Thereafter, Borrower may elect to convert such Borrowing to a
different Type or to continue such Borrowing and, in the case of a Eurodollar
Borrowing, may elect Interest Periods therefor, all as provided in this
Section.  Borrower may, subject to the requirements of Section 2.2(c),  elect
different options with respect to different portions of the affected Borrowing,
in which case each such portion shall be allocated ratably among the Lenders
holding the Loans comprising such Borrowing, and the Loans comprising each such
portion shall be considered a separate Borrowing.

         (b)     To make an election pursuant to this Section, Borrower shall
notify the Canadian Administrative Agent of such election by telephone by the
time that a Borrowing Request would be required under Section 2.3 if Borrower
were requesting a Borrowing of the Type resulting from such election to be made
on the effective date of such election.  Each such telephonic Interest Election
Request shall be irrevocable and shall be confirmed promptly by hand delivery
or





                                       19
<PAGE>   25
telecopy to the Canadian Administrative Agent of a written Interest Election
Request signed by Borrower.

         (c)     Each telephonic and written Interest Election Request shall
specify the following information in compliance with Section 2.2:

                 (i)          the Borrowing to which such Interest Election
         Request applies and, if different options are being elected with
         respect to different portions thereof, the portions thereof to be
         allocated to each resulting Borrowing (in which case the information
         to be specified pursuant to clauses (iii) and (iv) below shall be
         specified for each resulting Borrowing);

                 (ii)         the effective date of the election made pursuant
         to such Interest Election Request, which shall be a Business Day;

                 (iii)        whether the resulting Borrowing is to be an ABR
         Borrowing or a Eurodollar Borrowing; and

                 (iv)         if the resulting Borrowing is a Eurodollar
         Borrowing, the Interest Period to be applicable thereto after giving
         effect to such election, which shall be a period contemplated by the
         definition of the term "Interest Period".

If any such Interest Election Request requests a Eurodollar Borrowing but does
not specify an Interest Period, then Borrower shall be deemed to have selected
an Interest Period of one month's duration.

         (d)     Promptly following receipt of an Interest Election Request,
the Canadian Administrative Agent shall advise each Lender of the details
thereof and of such Lender's portion of each resulting Borrowing.

         (e)     If Borrower fails to deliver a timely Interest Election
Request with respect to a Eurodollar Borrowing prior to the end of the Interest
Period applicable thereto, then, unless such Borrowing is repaid as provided
herein, at the end of such Interest Period such Borrowing shall be converted to
an ABR Borrowing.  Notwithstanding any contrary provision hereof, if an Event
of Default has occurred and is continuing and the Canadian Administrative
Agent, at the request of the Required Lenders, so notifies Borrower, then, so
long as an Event of Default is continuing, (i) no outstanding Borrowing may be
converted to or continued as a Eurodollar Borrowing and (ii) unless repaid and
provided the Indebtedness has not been accelerated pursuant to Section 8.3,
each Eurodollar Borrowing shall be converted to an ABR Borrowing at the end of
the Interest Period applicable thereto.





                                       20
<PAGE>   26
         SECTION 2.8.         Termination and Reduction of Commitments.

         (a)     Unless previously terminated, the Commitments shall terminate
on the Maturity Date.

         (b)     Borrower may at any time terminate, or from time to time
reduce, the Commitments; provided that (i) each reduction of the Commitments
shall be in an amount that is an integral multiple of $1,000,000 and not less
than $5,000,000 and (ii) Borrower shall not terminate or reduce the Commitments
if, after giving effect to any concurrent prepayment of the Loans in accordance
with Section 2.10, the Credit Exposures would exceed the total Commitments.

         (c)     Borrower shall notify the Canadian Administrative Agent of any
election to terminate or reduce the Commitments under paragraph (b) of this
Section at least two Business Days prior to the effective date of such
termination or reduction, specifying such election and the effective date
thereof.  Promptly following receipt of any notice, the Canadian Administrative
Agent shall advise the Lenders of the contents thereof.  Each notice delivered
by Borrower pursuant to this Section shall be irrevocable; provided that a
notice of termination of the Commitments delivered by Borrower may state that
such notice is conditioned upon the effectiveness of other credit facilities,
in which case such notice may be revoked by Borrower (by notice to the Canadian
Administrative Agent on or prior to the specified effective date) if such
condition is not satisfied.  Any termination or reduction of the Commitments
shall be permanent.  Each reduction of the Commitments shall be made ratably
among the Lenders in accordance with their respective Commitments.

         SECTION 2.9.         Repayment of Loans; Evidence of Debt.

         (a)     Borrower hereby unconditionally promises to pay to the
Canadian Administrative Agent for the account of each Lender the then unpaid
principal amount of each Loan on the Maturity Date.

         (b)     Each Lender shall maintain in accordance with its usual
practice an account or accounts evidencing the indebtedness of Borrower to such
Lender resulting from each Loan made by such Lender, including the amounts of
principal and interest payable and paid to such Lender from time to time
hereunder.

         (c)     The Canadian Administrative Agent shall maintain accounts in
which it shall record (i) the amount of each Loan made hereunder, the Type
thereof and the Interest Period applicable thereto, (ii) the amount of any
principal or interest due and payable or to become due and payable from
Borrower to each Lender hereunder and (iii) the amount of any sum received by
the Canadian Administrative Agent hereunder for the account of the Lenders and
each Lender's share thereof.





                                       21
<PAGE>   27
         (d)     The entries made in the accounts maintained pursuant to
paragraph (b) or (c) of this Section shall be prima facie evidence of the
existence and amounts of the obligations recorded therein; provided that the
failure of any Lender or the Canadian Administrative Agent to maintain such
accounts or any error therein shall not in any manner affect the obligation of
Borrower to repay the Loans in accordance with the terms of this Agreement.

         (e)     Any Lender may request that Loans made by it be evidenced by
one or more promissory notes.  In such event, Borrower shall prepare, execute
and deliver to such Lender promissory notes payable to the order of such Lender
(or, if requested by such Lender, to such Lender and its registered assigns and
in a form approved by the Canadian Administrative Agent and the Global
Administrative Agent).  Thereafter, the Loans evidenced by such promissory
notes and interest thereon shall at all times (including after assignment
pursuant to Section 10.4) be represented by one or more promissory notes in
such form payable to the order of the payee named therein (or, if any such
promissory note is a registered note, to such payee and its registered
assigns).

         SECTION 2.10.        Prepayment of Loans.

         (a)     Borrower shall have the right at any time and from time to
time to prepay any Borrowing in whole or in part, subject to prior notice in
accordance with paragraph (b) of this Section.

         (b)     Borrower shall notify the Canadian Administrative Agent by
telephone (confirmed by telecopy) of any prepayment hereunder (i) in the case
of prepayment of a Eurodollar Borrowing, not later than 1:00 p.m., Toronto
time, three Business Days before the date of prepayment or (ii) in the case of
prepayment of an ABR Borrowing, not later than noon, Toronto time, on the date
of prepayment.  Each such notice shall be irrevocable and shall specify the
prepayment date and the principal amount of each Borrowing or portion thereof
to be prepaid; provided that, if a notice of prepayment is given in connection
with a conditional notice of termination of the Commitments as contemplated by
Section 2.8, then such notice of prepayment may be revoked if such notice of
termination is revoked in accordance with Section 2.8.  Promptly following
receipt of any such notice, the Canadian Administrative Agent shall advise the
Lenders of the contents thereof.  Each partial prepayment of any Borrowing
shall be in an amount that would be permitted in the case of an advance of a
Borrowing of the same Type as provided in Section 2.2.  Each prepayment of a
Borrowing shall be applied ratably to the Loans included in the prepaid
Borrowing.  Prepayments shall be accompanied by accrued interest to the extent
required by Section 2.12 and compensation for break funding, to the extent
required by Section 2.15.





                                       22
<PAGE>   28
         SECTION 2.11.        Fees.

         (a)     Borrower agrees to pay to the Canadian Administrative Agent
for the account of each Lender a facility fee (the "Facility Fee"), which shall
accrue at the Applicable Rate on the daily amount of the Commitment of such
Lender (whether used or unused) during the period from and including the Global
Effective Date to but excluding the date on which such Commitment terminates;
provided that, if such Lender continues to have any Credit Exposure after its
Commitment terminates, then such Facility Fee shall continue to accrue on the
daily amount of such Lender's Credit Exposure from and including the date on
which its Commitment terminates to but excluding the date on which such Lender
ceases to have any Credit Exposure.  Accrued Facility Fees shall be payable in
arrears on the first day of April, July and October and the second day of
January of each year and on the date on which the Commitments terminate,
commencing on the first such date to occur after the date hereof; provided that
any Facility Fees accruing after the date on which the Commitments terminate
shall be payable on demand.  All Facility Fees shall be computed on the basis
of a year of 365 days (or 366 days in a leap year) and shall be payable for the
actual number of days elapsed (including the first day but excluding the last
day).

         (b)     Borrower agrees to pay to the Canadian Administrative Agent,
for its own account, fees payable in the amounts and at the times separately
agreed upon between Borrower and the Canadian Administrative Agent.

         (c)     All fees payable hereunder shall be paid on the dates due, in
immediately available funds, to the Canadian Administrative Agent for
distribution, in the case of Facility Fees, to the Lenders.  Fees paid shall
not be refundable under any circumstances.

         SECTION 2.12.        Interest.

         (a)     The Loans comprising each ABR Borrowing shall bear interest at
the Alternate Base Rate.

         (b)     The Loans comprising each Eurodollar Borrowing shall bear
interest at the Adjusted LIBO Rate for the Interest Period in effect for such
Borrowing plus the Applicable Rate.

         (c)     Notwithstanding the foregoing, if any principal of or interest
on any Loan or any fee or other amount payable by Borrower hereunder is not
paid when due, whether at stated maturity, upon acceleration or otherwise, such
overdue amount shall bear interest, after as well as before judgment, at a rate
per annum equal to (i) in the case of overdue principal of any Loan, 2% plus
the rate otherwise applicable to such Loan as provided in the preceding
paragraphs of this Section or (ii) in the case of any other amount, 2% plus the
rate applicable to ABR Loans as provided in paragraph (a) of this Section.

         (d)     Accrued interest on each Loan shall be payable in arrears on
each Interest Payment Date for such Loan and upon termination of the
Commitments; provided that (i) interest accrued





                                       23
<PAGE>   29
pursuant to paragraph (c) of this Section shall be payable on demand, (ii) in
the event of any repayment or prepayment of any Loan, accrued interest on the
principal amount repaid or prepaid shall be payable on the date of such
repayment or prepayment and (iii) in the event of any conversion of any
Eurodollar Loan prior to the end of the current Interest Period therefor,
accrued interest on such Loan shall be payable on the effective date of such
conversion.

         (e)     All interest hereunder shall be computed on the basis of a
year of 360 days, except that interest computed by reference to the Alternate
Base Rate at times when the Alternate Base Rate is based on the U.S. Base Rate
shall be computed on the basis of a year of 365 days (or 366 days in a leap
year), and in each case shall be payable for the actual number of days elapsed
(including the first day but excluding the last day).  The applicable Alternate
Base Rate or Adjusted LIBO Rate shall be determined by the Canadian
Administrative Agent, and such determination shall be conclusive absent
demonstrable error.

         (f)     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 Borrower.

         (g)     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, acceptance or
other evidence of indebtedness or in any other Loan Document now or hereafter
taken by any Agent or any Lender for the obligations of Borrower under this
Agreement, or any other instrument referred to herein, and all interest and
fees payable by Borrower to the Lenders, shall accrue from day to day, computed
as described herein in accordance with the "nominal rate" method of interest
calculation.

         (h)     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.

         SECTION 2.13.        Alternate Rate of Interest.  If prior to the
commencement of any Interest Period for a Eurodollar Borrowing:

                 (i)          the Canadian Administrative Agent determines
         (which determination shall be conclusive absent demonstrable error)
         that adequate and reasonable means do not exist for ascertaining the
         Adjusted LIBO Rate for such Interest Period; or

                 (ii)         the Canadian Administrative Agent is advised by
         the Required Lenders that the Adjusted LIBO Rate for such Interest
         Period will not adequately and fairly reflect the cost to such Lenders
         of making or maintaining their Loans included in such Borrowing for
         such Interest Period;





                                       24
<PAGE>   30


         then the Canadian Administrative Agent shall give notice thereof to
         Borrower and the Lenders by telephone or telecopy as promptly as
         practicable thereafter and, until the Canadian Administrative Agent
         notifies Borrower and the Lenders that the circumstances giving rise
         to such notice no longer exist, (i) any Interest Election Request that
         requests the conversion of any Borrowing to, or continuation of any
         Borrowing as, a Eurodollar Borrowing shall be ineffective and (ii) if
         any Borrowing Request requests a Eurodollar Borrowing, such Borrowing
         shall be made as an ABR Borrowing; provided that if the circumstances
         giving rise to such notice affect only one Type of Borrowings, then
         the other Type of Borrowings shall be permitted.

         SECTION 2.14.        Increased Costs.

         (a)     If any Change in Law shall:

                 (i)          impose, modify or deem applicable any reserve,
         special deposit or similar requirement against assets of, deposits
         with or for the account of, or credit extended by, any Lender (except
         any such reserve requirement reflected in the Adjusted LIBO Rate); or

                 (ii)         impose on any Lender or the London interbank
         market any other condition affecting this Agreement or Eurodollar
         Loans made by such Lender;

and the result of any of the foregoing shall be to increase the cost to such
Lender of making or maintaining any Eurodollar Loan (or of maintaining its
obligation to make any such Loan) or to reduce the amount of any sum received
or receivable by such Lender hereunder (whether of principal, interest or
otherwise), then Borrower will pay to such Lender such additional amount or
amounts as will compensate such Lender for such additional costs incurred or
reduction suffered.

         (b)     If any Lender reasonably determines that any Change in Law
regarding capital requirements has or would have the effect of reducing the
rate of return on such Lender's capital or on the capital of such Lender's
holding company, if any, as a consequence of this Agreement or the Loans made
by such Lender, to a level below that which such Lender or such Lender's
holding company could have achieved but for such Change in Law (taking into
consideration such Lender's policies and the policies of such Lender's holding
company with respect to capital adequacy), then from time to time Borrower will
pay to such Lender such additional amount or amounts as will compensate such
Lender or such Lender's holding company for any such reduction suffered.

         (c)     A certificate of a Lender setting forth the amount or amounts
necessary to compensate such Lender or its holding company, as the case may be,
as specified in paragraph (a) or (b) of this Section (together with the
calculation thereof) shall be delivered to Borrower and shall be conclusive
absent demonstrable error.  Borrower shall pay such Lender the amount shown as
due on any such certificate within 10 days after receipt thereof.





                                       25
<PAGE>   31
         (d)     Failure or delay on the part of any Lender to demand
compensation pursuant to this Section shall not constitute a waiver of such
Lender's right to demand such compensation; provided that Borrower shall not be
required to compensate a Lender pursuant to this Section for any increased
costs or reductions incurred more than 180 days prior to the date that such
Lender notifies Borrower of the Change in Law giving rise to such increased
costs or reductions and of such Lender's intention to claim compensation
therefor; provided further that, if the Change in Law giving rise to such
increased costs or reductions is retroactive, then the 180-day period referred
to above shall be extended to include the period of retroactive effect thereof.

         SECTION 2.15.        Break Funding Payments.  In the event of (a) the
payment of any principal of any Eurodollar Loan other than on the last day of
an Interest Period applicable thereto (including as a result of an Event of
Default), (b) the conversion of any Eurodollar Loan other than on the last day
of the Interest Period applicable thereto, (c) the failure to borrow, convert,
continue or prepay any Loan on the date specified in any notice delivered
pursuant hereto (regardless of whether such notice may be revoked under Section
2.10(b) and is revoked in accordance therewith) or (d) the assignment of any
Eurodollar Loan other than on the last day of the Interest Period applicable
thereto as a result of a request by Borrower pursuant to either  Section 2.6 or
Section 2.18 then, in any such event, Borrower shall compensate each Lender for
the loss, cost and expense attributable to such event.  In the case of a
Eurodollar Loan, such loss, cost or expense to any Lender shall be deemed to
include an amount determined by such Lender to be the excess, if any, of (i)
the amount of interest which would have accrued on the principal amount of such
Loan had such event not occurred, at the Adjusted LIBO Rate that would have
been applicable to such Loan, for the period from the date of such event to the
last day of the then current Interest Period therefor (or, in the case of a
failure to borrow, convert or continue, for the period that would have been the
Interest Period for such Loan), over (ii) the amount of interest which would
accrue on such principal amount for such period at the interest rate which such
Lender would bid were it to bid, at the commencement of such period, for dollar
deposits of a comparable amount and period from other banks in the eurodollar
market.  A certificate of any Lender setting forth any amount or amounts that
such Lender is entitled to receive, together with the calculation thereof,
pursuant to this Section shall be delivered to Borrower and the Canadian
Administrative Agent and shall be conclusive absent demonstrable error.
Borrower shall pay to the Canadian Administrative Agent for the account of such
Lender the amount shown as due on any such certificate within 10 days after
receipt thereof.

         SECTION 2.16.        Taxes.

         (a)     Any and all payments by or on account of any obligation of
Borrower hereunder shall be made free and clear of and without deduction for
any Indemnified Taxes or Other Taxes; provided that if Borrower shall be
required to deduct any Indemnified Taxes or Other Taxes from such payments,
then (i) the sum payable shall be increased as necessary so that after making
all required deductions (including deductions applicable to additional sums
payable under this Section) the Canadian Administrative Agent, the Global
Administrative Agent or Lender (as the case may be) receives an amount equal to
the sum it would have received had no such deductions





                                       26
<PAGE>   32
been made, (ii) Borrower shall make such deductions and (iii) Borrower shall
pay the full amount deducted to the relevant Governmental Authority in
accordance with applicable law.

         (b)     In addition, Borrower shall pay any Other Taxes to the
relevant Governmental Authority in accordance with applicable law.

         (c)     Borrower shall pay the Canadian Administrative Agent, the
Global Administrative Agent and each Lender, within 10 days after written
demand therefor, the full amount of any Indemnified Taxes or Other Taxes paid
by the Canadian Administrative Agent, the Global Administrative Agent or such
Lender, as the case may be, on or with respect to any payment by or on account
of any obligation of Borrower hereunder (including Indemnified Taxes or Other
Taxes imposed or asserted on or attributable to amounts payable under this
Section) and any penalties, interest and reasonable expenses arising therefrom
or with respect thereto (other than any such penalties or interest arising
through the failure of the Canadian Administrative Agent, the Global
Administrative Agent or Lender to act as a reasonably prudent agent or lender,
respectively), whether or not such Indemnified Taxes or Other Taxes were
correctly or legally imposed or asserted by the relevant Governmental
Authority.  A certificate as to the amount of such payment or liability
delivered to Borrower by a Lender, or by either the Canadian Administrative
Agent or the Global Administrative Agent on its own behalf or on behalf of a
Lender, shall be conclusive absent demonstrable error.

         (d)     As soon as practicable after any payment of Indemnified Taxes
or Other Taxes by Borrower to a Governmental Authority, Borrower shall deliver
to the Canadian Administrative Agent the original or a certified copy of a
receipt issued by such Governmental Authority evidencing such payment, a copy
of the return reporting such payment or other evidence of such payment
reasonably satisfactory to the Canadian Administrative Agent.

         (e)     Any Foreign Lender that is entitled to an exemption from or
reduction of withholding tax under the law of the jurisdiction in which
Borrower is located, or any treaty to which such jurisdiction is a party, with
respect to payments under this Agreement shall deliver to Borrower (with a copy
to the Canadian Administrative Agent), at the time or times prescribed by
applicable law, such properly completed and executed documentation prescribed
by applicable law or reasonably requested by Borrower as will permit such
payments to be made without withholding or at a reduced rate.

    SECTION 2.17.        Payments Generally; Pro Rata Treatment; Sharing of
Set-offs.

         (a)     Borrower shall make each payment required to be made by it
hereunder (whether of principal, interest or fees, or of amounts payable under
Section 2.14, 2.15 or 2.16, or otherwise) prior to 1:00 p.m., Toronto time, on
the date when due, in immediately available funds, without set-off or
counterclaim.  All such payments shall be made to the Canadian Administrative
Agent, c/o Bank of Montreal, 22nd Floor, First Canadian Place, Toronto, Ontario
M5X 1A1, except that payments pursuant to Sections 2.14, 2.16 and 10.3 shall be
made directly





                                       27
<PAGE>   33
to the Persons entitled thereto.  The Canadian Administrative Agent shall
distribute any such payments received by it for the account of any other Person
to the appropriate recipient promptly following receipt thereof.  If any
payment hereunder shall be due on a day that is not a Business Day, the date
for payment shall be extended to the next succeeding Business Day, and, in the
case of any payment accruing interest, interest thereon shall be payable for
the period of such extension.  All payments hereunder shall be made in dollars.

         (b)     If at any time insufficient funds are received by and
available to the Canadian Administrative Agent to pay fully all amounts of
principal, interest and fees then due hereunder, such funds shall be applied
(i) first, towards payment of interest and fees then due hereunder, ratably
among the parties entitled thereto in accordance with the amounts of interest
and fees then due to such parties, and (ii) second, towards payment of
principal then due hereunder, ratably among the parties entitled thereto in
accordance with the amounts of principal then due to such parties.  If
insufficient funds are received due to Borrower's entitlement to withhold
amounts on account of Excluded Taxes in relation to a particular Lender, such
insufficiency shall not be subject to this Section 2.17(b) but shall be
withheld from and shall only affect payments made to such Lender.

         (c)     If any Lender shall, by exercising any right of set-off or
counterclaim or otherwise, obtain payment in respect of any principal of or
interest on any of its Loans resulting in such Lender receiving payment of a
greater proportion of the aggregate amount of its Loans and accrued interest
thereon than the proportion received by any other Lender, then the Lender
receiving such greater proportion shall purchase (for cash at face value)
participations in the Loans of other Lenders to the extent necessary so that
the benefit of all such payments shall be shared by the Lenders ratably in
accordance with the aggregate amount of principal of and accrued interest on
their respective Loans; provided that (i) if any such participations are
purchased and all or any portion of the payment giving rise thereto is
recovered, such participations shall be rescinded and the purchase price
restored to the extent of such recovery, without interest, and (ii) the
provisions of this paragraph shall not be construed to apply to any payment
made by Borrower pursuant to and in accordance with the express terms of this
Agreement or any payment obtained by a Lender as consideration for the
assignment of or sale of a participation in any of its Loans to any assignee or
participant, other than to Borrower or any Subsidiary or Affiliate thereof (as
to which the provisions of this paragraph shall apply).  Borrower consents to
the foregoing and agrees, to the extent it may effectively do so under
applicable law, that any Lender acquiring a participation pursuant to the
foregoing arrangements may exercise against Borrower rights of set-off and
counterclaim with respect to such participation as fully as if such Lender were
a direct creditor of Borrower in the amount of such participation.

         (d)     Unless the Canadian Administrative Agent shall have received
notice from Borrower prior to the date on which any payment is due to the
Canadian Administrative Agent for the account of the Lenders hereunder that
Borrower will not make such payment, the Canadian Administrative Agent may
assume that Borrower has made such payment on such date in accordance herewith
and may, in reliance upon such assumption, distribute to the Lenders the





                                       28
<PAGE>   34
amount due.  In such event, if Borrower has not in fact made such payment, then
each of the Lenders severally agrees to repay to the Canadian Administrative
Agent forthwith on demand the amount so distributed to such Lender with
interest thereon, for each day from and including the date such amount is
distributed to it to but excluding the date of payment to the Canadian
Administrative Agent, at the greater of the Federal Funds Effective Rate and a
rate determined by the Canadian Administrative Agent in accordance with banking
industry rules in Canada on interbank compensation.

         (e)     If any Lender shall fail to make any payment required to be
made by it pursuant to Section 2.17(d), then the Canadian Administrative Agent
may, in its discretion (notwithstanding any contrary provision hereof), apply
any amounts thereafter received by the Canadian Administrative Agent for the
account of such Lender to satisfy such Lender's obligations under such Section
until all such unsatisfied obligations are fully paid.

         SECTION 2.18.        Mitigation Obligations; Replacement of Lenders.

         (a)     If any Lender requests compensation under Section 2.14, or if
Borrower is required to pay any additional amount to any Lender or any
Governmental Authority for the account of any Lender pursuant to Section 2.16,
then such Lender shall use reasonable efforts to designate a different lending
office for funding or booking its Loans hereunder or to assign its rights and
obligations hereunder to another of its offices, branches or affiliates, if, in
the judgment of such Lender, such designation or assignment (i) would eliminate
or reduce amounts payable pursuant to Section 2.14 or 2.16, as the case may be,
in the future and (ii) would not subject such Lender to any unreimbursed cost
or expense and would not otherwise be disadvantageous to such Lender.  Borrower
hereby agrees to pay all reasonable costs and expenses incurred by any Lender
in connection with any such designation or assignment.

         (b)     If any Lender requests compensation under Section 2.14, or if
Borrower is required to pay any additional amount to any Lender or any
Governmental Authority for the account of any Lender pursuant to Section 2.16,
or if any Lender defaults in its obligation to fund Loans hereunder, then
Borrower may upon notice to such Lender and the Canadian Administrative Agent
and the Global Administrative Agent, require such Lender to assign and
delegate, without recourse or expense to, or warranty by, such Lender (in
accordance with and subject to the restrictions contained in Section 10.4), all
its interests, rights and obligations under this Agreement to an assignee
designated by Borrower and which meets the requirements of Section 10.4(b) that
shall assume such obligations (which assignee may be another Lender, if a
Lender accepts such assignment); provided that (i) Borrower shall have received
the prior written consent of the Canadian Administrative Agent and the Global
Administrative Agent, which consent shall not unreasonably be withheld, (ii)
such Lender shall have received payment of an amount equal to the outstanding
principal of its Loans, accrued interest thereon, accrued fees and all other
amounts payable to it hereunder, from the assignee (to the extent of such
outstanding principal and accrued interest and fees) or Borrower (in the case
of all other amounts), (iii) the assignee and assignor shall have entered into
an Assignment and Acceptance and (iv) in the case of any such assignment





                                       29
<PAGE>   35
resulting from a claim for compensation under Section 2.14 or payments required
to be made pursuant to Section 2.16, such assignment will result in a reduction
in such compensation or payments.

         SECTION 2.19.        Currency Conversion and Currency Indemnity.

         (a)     Payments in Agreed Currency.  Borrower 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
Borrower or otherwise howsoever), such payment shall constitute a discharge of
the liability of Borrower hereunder and under the other Loan Documents in
respect of such obligation only to the extent of the amount of the Agreed
Currency which the relevant 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 next
Business Day following the date such judgment is given and in any event
Borrower shall be obligated to pay the Agents and the Lenders any deficiency in
accordance with Section 2.19(c).  For the foregoing purposes "rate of exchange"
means the rate at which the relevant 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 Lender or
any Agent receives any payment or payments on account of the liability of
Borrower hereunder pursuant to any judgment or order in any Other Currency, and
(ii) the amount of the Agreed Currency which the relevant 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 Borrower on demand shall, and
Borrower hereby agrees to, indemnify and save the 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 2.19(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





                                       30
<PAGE>   36
apply irrespective of any indulgence granted by the 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 III

                         Representations and Warranties

         In order to induce the Lenders and the Agents to enter into this
Agreement and the Lenders to make Loans hereunder, Borrower represents and
warrants unto the Agents and each Lender as set forth in this Article III.

         SECTION 3.1.         Organization.  Borrower is a corporation, and
each of its 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
where the failure to so qualify would have a Material Adverse Effect.

         SECTION 3.2.         Authorization and Validity.  The execution,
delivery and performance by Borrower of this Agreement and each other Loan
Document executed or to be executed by it, are within Borrower's corporate
powers, have been duly authorized by all necessary corporate action on behalf
of it, and do not (a) contravene Borrower's articles of incorporation or other
organizational documents, as the case may be; (b) contravene any material
contractual restriction, law or governmental regulation or court decree or
order binding on or affecting Borrower or any Subsidiary; or (c) result in, or
require the creation or imposition of, any Lien, not permitted by Section 7.1,
on any of Borrower's or any Subsidiary's properties.  This Agreement
constitutes, and each other Loan Document executed by Borrower will, on the due
execution and delivery thereof, constitute, the legal, valid and binding
obligations of Borrower enforceable in accordance with their respective terms
subject as to enforcement only to bankruptcy, insolvency, reorganization,
moratorium or other similar laws affecting the enforcement of creditor rights
generally and to general principles of equity.

         SECTION 3.3.         Government Approval and Regulation.  No
authorization or approval or other action by, and no notice to or filing with,
any governmental authority or regulatory body or other Person is required for
the due execution, delivery or performance by Borrower of this Agreement or any
other Loan Document.  Neither Parent or Borrower nor any of their Subsidiaries
is an "investment company," within the meaning of the Investment Company Act of
1940, as amended, or 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.





                                       31
<PAGE>   37
         SECTION 3.4.         Unfunded Pension Liabilities.  The unfunded
pension or similar liabilities of Parent, Borrower and their Subsidiaries do
not in the aggregate exceed $25,000,000.

         SECTION 3.5.         Regulation U.  Borrower is not engaged in the
business of extending credit for the purpose of purchasing or carrying margin
stock, and no proceeds of any Loans will be used for a purpose which violates,
or would be inconsistent with, Regulation U.  Terms for which meanings are
provided in Regulations U are used in this Section with such meanings.

         SECTION 3.6.         Taxes.  Borrower and each of its Subsidiaries has
to the best knowledge of Borrower after due investigation filed all tax returns
and reports required by law to have been filed by it and has paid all taxes and
governmental charges thereby shown to be owing, except any such taxes or
charges which are being contested in good faith by appropriate proceedings and
for which adequate reserves in accordance with GAAP shall have been set aside
on its books or which the failure to file or pay could not reasonably be
expected to have a Material Adverse Effect.

         SECTION 3.7.         Subsidiaries; Restricted Subsidiaries.  Schedule
3.7 hereto contains an accurate list of all of the presently existing
Subsidiaries, including, without limitation, Restricted Subsidiaries, of
Borrower 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 Borrower 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.

                                   ARTICLE IV

                                   Conditions

         SECTION 4.1.         Initial Loan.  The obligations of the Lenders to
make the initial Loan shall be subject to the prior or concurrent satisfaction
of each of the conditions precedent set forth in this Section 4.1.

         (a)     Resolutions and Officers Certificates.  The Canadian
                 Administrative Agent and the Global Administrative Agent shall
                 have received from Borrower a certificate, dated the Closing
                 Date, of the Secretary or Assistant Secretary of Borrower as
                 to (a) resolutions of its governing board, then in full force
                 and effect authorizing the execution, delivery and performance
                 of this Agreement and each other Loan Document to be executed
                 by it; (b) the incumbency and signatures of those of its
                 officers authorized to act with respect to this Agreement and
                 each other Loan Document executed by it; and (c) its articles
                 of incorporation and bylaws; upon which certificates each
                 Lender may conclusively rely until it shall have received a
                 further certificate of an authorized officer of Borrower
                 canceling or amending such prior certificate.





                                       32
<PAGE>   38
         (b)     Existing Facilities.  The Canadian Administrative Agent and
                 the Global Administrative Agent shall have received a
                 certificate, signed by an Authorized Officer of Parent and
                 Borrower, stating that Parent or its Subsidiaries have repaid
                 in full and terminated the Existing Global Credit Facilities
                 concurrently with the initial Combined Loans under the
                 Combined Credit Agreements.

         (c)     Opinions of Counsel.  The Global Administrative Agent shall
                 have received opinions, dated the Closing Date, addressed to
                 the Canadian Administrative Agent and the Global
                 Administrative Agent, the other Agents and all Lenders, from
                 (i) Bennett Jones Verchere, counsel to Borrower, in
                 substantially the form attached hereto as Exhibit A-1, (ii)
                 Chamberlain, Hrdlicka, White, Williams & Martin, U.S. counsel
                 to Borrower, in substantially the form attached hereto as
                 Exhibit A-2, and (iii) Burnet, Duckworth & Palmer, counsel to
                 the Canadian Administrative Agent and the Global
                 Administrative Agent, in substantially the form attached
                 hereto as Exhibit B.

         (d)     Closing Fees and Expenses.  The Canadian Administrative Agent
                 shall have received for its own account, or for the account of
                 each Lender and other Agent, as the case may be, all fees,
                 costs and expenses due and payable pursuant hereto.

         (e)     Financial Statements.  The Canadian Administrative Agent and
                 the Global Administrative Agent shall have received a
                 certificate, signed by an Authorized Officer of Borrower,
                 stating that (i) the audited consolidated financial statements
                 of Parent and its Subsidiaries for fiscal year 1996 and (ii)
                 the report and accompanying financial statements of Parent,
                 Borrower and its Subsidiaries for fiscal year 1996
                 (collectively, the "1996 Financials") fairly present Parent's
                 and Borrower's consolidated financial condition and results of
                 operations and that prior to the Global Effective Date no
                 material adverse change in the condition or operations of
                 Parent or Borrower and its Subsidiaries, taken as a whole,
                 from that reflected in the 1996 Financials has occurred and is
                 continuing.

         (f)     Environmental Warranties.  In the ordinary course of its
                 business, Borrower conducts an ongoing review of the effect of
                 existing Environmental Laws on the business, operations and
                 properties of Borrower and its Subsidiaries, in the course of
                 which it attempts to identify and evaluate associated
                 liabilities and costs (including, without limitation, any
                 capital or operating expenditures required for clean-up or
                 closure of properties presently or previously owned, 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





                                       33
<PAGE>   39
                 expenses).  On the basis of this review, the Canadian
                 Administrative Agent and the Global Administrative Agent shall
                 have received a certificate, signed by an Authorized Officer
                 of Borrower, stating that after such review Borrower has
                 reasonably concluded that existing Environmental Laws are
                 unlikely to have a Material Adverse Effect, or that Borrower
                 has established adequate reserves in respect of any required
                 clean-up.

         (g)     Global Effectiveness Notice.  The Canadian Administrative
                 Agent and the Global Administrative Agent shall have received
                 the Global Effectiveness Notice.

         (h)     Australian Credit Agreement and U.S. Credit Agreement.  The
                 Canadian Administrative Agent and the Global Administrative
                 Agent shall have received copies of the executed Australian
                 Credit Agreement and the other Australian Loan Documents and
                 the executed U.S. Credit Agreement and the other U.S. Loan
                 Documents.

         (i)     Guaranty.  The Canadian Administrative Agent and the Global
                 Administrative Agent shall have received an executed Guaranty
                 for Borrower.

         (j)     Litigation.  The Canadian Administrative Agent and Global
                 Administrative Agent shall have received a certificate, signed
                 by an Authorized Officer of Parent, stating that no
                 litigation, arbitration, governmental proceeding, Tax claim
                 dispute or administrative or other proceeding shall be pending
                 or, to the knowledge of Parent, threatened against Parent or
                 any of its Subsidiaries which could reasonably be expected to
                 have a Material Adverse Effect or which purports to affect the
                 legality, validity or enforceability of this Agreement or any
                 other Loan Document.

         (k)     Other Documents.  The Canadian Administrative Agent and the
                 Global Administrative Agent shall have received such other
                 instruments and documents as any of the Agents or their
                 counsel may have reasonably requested.

The Canadian Administrative Agent shall notify Borrower, the other Agents and
the Lenders of the Global Effective Date, and such notice shall be conclusive
and binding.  Notwithstanding the foregoing, the obligations of the Lenders to
make Loans hereunder shall not become effective unless each of the foregoing
conditions is satisfied (or waived pursuant to Section 10.2) at or prior to
3:00 p.m., Toronto time, on June 30, 1997 (and, in the event such conditions
are not so satisfied or waived, the Commitments shall terminate at such time).

         SECTION 4.2.         All Loans.  The obligation of each Lender to fund
any Loan which results in an increase in the aggregate outstanding principal
amount of Loans under this Agreement on the occasion of any Borrowing shall be
subject to the satisfaction of each of the conditions precedent set forth in
this Section 4.2.





                                       34
<PAGE>   40
         (a)          Compliance with Warranties and No Default.  Both before 
                      and after giving effect to any Borrowing, the following
                      statements shall be true and correct: (1) the
                      representations and warranties set forth in Article III
                      shall be true and correct with the same effect as if then
                      made (unless stated to relate solely to an earlier date,
                      in which case such representations and warranties shall be
                      true and correct as of such earlier date); and (b) no
                      Default or Event of Default shall have then occurred and
                      be continuing.
                      
         (b)          Borrowings.  The Canadian Administrative Agent shall have
                      received a Borrowing Request for any Borrowing.

                                   ARTICLE V

                             Affirmative Covenants

         Until the Commitments have expired or been terminated and all
Obligations shall have been paid in full and unless the Required Lenders shall
otherwise consent in writing, Borrower covenants and agrees with the Lenders
that:

         SECTION 5.1.         Financial Reporting and Notices.  Borrower will
furnish, will cause to be furnished or will assist Parent in furnishing, to
each Lender, the Canadian Administrative Agent and the Global Administrative
Agent copies of the following financial statements, reports, notices and
information:

         (a)     within 90 days after the end of each Fiscal Year of Borrower,
                 a copy of the report for such fiscal year and accompanying
                 financial statements for Borrower and its Subsidiaries,
                 including therein consolidated balance sheets of Borrower and
                 its Subsidiaries as of the end of such fiscal year and
                 consolidated statements of earnings and cash flow of Borrower
                 and its Subsidiaries for such fiscal year, all prepared in
                 accordance with GAAP in each case certified by an Authorized
                 Officer of Borrower, such signature deemed to be a
                 certification that such financial statements present fairly in
                 accordance with GAAP the financial position of the Borrower
                 and its Subsidiaries;

         (b)     within 45 days after the end of each of the first three fiscal
                 quarters of each fiscal year of Borrower commencing with the
                 fiscal quarter ending June 30, 1997, unaudited consolidated
                 balance sheets of Borrower and its Subsidiaries as of the end
                 of such fiscal quarter and consolidated statements of earnings
                 and cash flow of Borrower and its Subsidiaries for such fiscal
                 quarter and for the period commencing at the end of the
                 previous fiscal year and ending with the end of such fiscal
                 quarter, all prepared in accordance with GAAP certified by an
                 Authorized Officer of Borrower, such signature deemed to be a
                 certification that such financial





                                       35
<PAGE>   41
                 statements present fairly in accordance with GAAP the
                 financial position of the Borrower and its Subsidiaries;

         (c)     together with the financial statements described in (a) and
                 (b) above, a compliance certificate, in substantially the form
                 of Exhibit C or any other form approved by the Canadian
                 Administrative Agent and the Global Administrative Agent,
                 executed by an Authorized Officer of Parent and an Authorized
                 Officer of Borrower;

         (d)     within five (5) days after the occurrence of each Default, a
                 statement of an Authorized Officer of Parent and an Authorized
                 Officer of Borrower setting forth details of such Default and
                 the action which Parent and Borrower have taken and proposes
                 to take with respect thereto;

         (e)     promptly after the sending or filing thereof, copies of all
                 material public filings, reports and communications from
                 Parent or Borrower, and all reports and registration
                 statements which Parent or Borrower or any of their
                 Subsidiaries files with the Securities and Exchange
                 Commission, any national securities exchange or any federal or
                 provincial securities regulatory body in Canada;

         (f)     such other information respecting the financial condition or
                 operations of Borrower or any of its Subsidiaries as any
                 Lender through the Canadian Administrative Agent may from time
                 to time reasonably request.

         SECTION 5.2.         Compliance with Laws.  Borrower will, and will
cause each of its Subsidiaries to, comply in all material respects with all
applicable laws, rules, regulations and orders where noncompliance therewith
may reasonably be expected to have a Material Adverse Effect, except where the
necessity of compliance therewith is contested in good faith by appropriate
proceedings.

         SECTION 5.3.         Maintenance of Properties.  Borrower will, and
will cause each of its Subsidiaries to, maintain, preserve, protect and keep
valid title to, or valid leasehold interest in, all of its properties and
assets, real and personal, tangible and intangible, of any nature whatsoever
(including patents, trademarks, trade names, service marks and copyrights),
free and clear of all Liens, charges or claims (including infringement claims
with respect to patents, trademarks, copyrights and the like) except as
permitted pursuant to Section 7.1 and except for imperfections and other
burdens of title thereto as do not in the aggregate materially detract from the
value thereof or for the use thereof in their businesses (taken as a whole).

         SECTION 5.4.         Insurance.  Borrower will, and will cause each of
its Subsidiaries to, maintain or cause to be maintained with responsible
insurance companies (subject to self-insured retentions) insurance with respect
to its properties and business against such casualties and contingencies and of
such types and in such amounts as is customary in the case of similar
businesses.





                                       36
<PAGE>   42
         SECTION 5.5.         Books and Records.  Borrower will, and will cause
each of its Subsidiaries to, keep books and records which accurately reflect
all of its business affairs and transactions and permit the Canadian
Administrative Agent or the Global Administrative Agent and the other Agents
and each Lender through the Canadian Administrative Agent or the Global
Administrative Agent or any of their respective authorized representatives,
during normal business hours and at reasonable intervals, to visit all of its
offices, to discuss its financial matters with its officers and to examine
(and, at the expense of the Canadian Administrative Agent, the Global
Administrative Agent or such other Agent or Lender or, if a Default or Event of
Default has occurred and is continuing, at the expense of Borrower, photocopy
extracts from) any of its books or other records.

         SECTION 5.6.         Minimum Book Value for Assets of Parent and its
Restricted Subsidiaries.  Parent shall maintain an aggregate book value for
assets of Parent and its Restricted Subsidiaries (without duplication and
excluding the aggregate book value attributable to Parent or any Restricted
Subsidiary arising in connection with any Subsidiary which is not a Restricted
Subsidiary) as of the end of any fiscal quarter, commencing with the quarter
ending March 31, 1997, equal to or greater than the difference of (i) US
$2,000,000,000 less (ii) the aggregate amount of any non-cash write downs
(other than for recurring depletion or depreciation) made by Parent and any of
its Restricted Subsidiaries; provided that, if as of the end of any fiscal
quarter Parent is not in compliance with this Section, Parent, for a period of
30 days following the delivery of the financial statements for such fiscal
quarter, shall be entitled to cure such non-compliance by delivering a notice
to the Global Administrative Agent designating certain Unrestricted
Subsidiaries as Restricted Subsidiaries for the purposes of this Section at
which time the Global Administrative Agent shall redetermine compliance with
this Section using such newly-designated Restricted Subsidiaries in such
redetermination.

         SECTION 5.7.         Use of Proceeds.  Borrower will, and will cause
each Subsidiary to, use the proceeds of the Loans (i) to refinance existing
Indebtedness of Borrower and its Subsidiaries or (ii) for Borrower's and its
Subsidiaries' general corporate purposes, including any non-hostile
acquisitions.

                                   ARTICLE VI

                              Financial Covenants

         Until the Commitments have expired or been terminated and all
Obligations shall have been paid in full and unless the Required Lenders shall
otherwise consent in writing, Borrower covenants and agrees with the Lenders
that:

         SECTION 6.1.         Minimum Tangible Net Worth.  Parent will not
permit its Consolidated Tangible Net Worth as of the end of any fiscal quarter,
commencing with the quarter ending March 31, 1997, to be less than (i)
$1,000,000,000 plus (ii) an amount equal to 50% of the sum of Parent's and its
Subsidiaries' consolidated net income for each fiscal quarter, beginning with





                                       37
<PAGE>   43
the fiscal quarter ending June 30, 1997, during which such consolidated net
income is greater than $0.

         SECTION 6.2.         Ratio of Total Debt to Capital.  Parent will not
permit its ratio (expressed as a percentage) of (i) the consolidated Debt of
Parent and its Subsidiaries to (ii) Capital to be greater than 60% at the end
of any fiscal quarter, commencing with the fiscal quarter ending March 31,
1997.

                                  ARTICLE VII

                               Negative Covenants

         Until the Commitments have expired or terminated and all Obligations
have been paid in full and unless the Required Lenders shall otherwise consent
in writing, Borrower covenants and agrees with the Lenders that:

         SECTION 7.1.         Liens.  Borrower will not, and will not permit
any of its Subsidiaries to, create, incur, assume or suffer to exist any Lien
upon the stock, assets, or indebtedness of Borrower or any of its Subsidiaries
to secure Indebtedness of Borrower or any other Person except:

         (i)     Liens on any property or assets owned or leased by Borrower or
                 any Subsidiary existing at the time such property or asset was
                 acquired (or at the time such Person became a Subsidiary);
                 provided that in the case of the acquisition of a Subsidiary
                 such Lien only encumbers property or assets immediately prior
                 to, or at the time of, the acquisition by Borrower of such
                 Subsidiary;

         (ii)    purchase money Liens so long as such Liens only encumber
                 property or assets acquired with the proceeds of the purchase
                 money indebtedness incurred in connection with such Lien;

         (iii)   Liens granted by an Unrestricted Subsidiary on its assets to
                 secure Indebtedness incurred by such Unrestricted Subsidiary;

         (iv)    Liens on assets of a Restricted Subsidiary securing
                 Indebtedness of a Restricted Subsidiary owing to Borrower, to
                 Parent or to another Restricted Subsidiary or Liens on assets
                 of an Unrestricted Subsidiary securing Indebtedness of an
                 Unrestricted Subsidiary owing to Borrower, to Parent, to a
                 Restricted Subsidiary or to another Unrestricted Subsidiary;

         (v)     Liens existing on the Closing Date set forth on Schedule 7.1;

         (vi)    Liens arising under operating agreements;





                                       38
<PAGE>   44
         (vii)   Liens reserved in oil, gas and/or mineral leases for bonus
                 rental payments and for compliance with the terms of such
                 leases;

         (viii)  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 oil, natural gas and natural gas liquids, 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;

         (ix)    Liens on the stock or other ownership interests of or in any
                 Unrestricted Subsidiary;

         (x)     Liens for taxes, assessments or similar charges, incurred in
                 the ordinary course of business, that are not yet due and
                 payable or that are being contested as set forth in Section
                 3.6;

         (xi)    pledges or deposits made in the ordinary course of business to
                 secure payment of worker's compensation, or to participate in
                 any fund in connection with worker's compensation,
                 unemployment insurance, old-age pensions or other social
                 security programs;

         (xii)   Liens imposed by mandatory provisions of law such as for
                 mechanics', materialmen's, warehousemen's, carriers', or other
                 like Liens, securing obligations incurred in the ordinary
                 course of business that are not yet due and payable;

         (xiii)  Liens in renewal or extension of any of the foregoing
                 permitted Liens, so long as limited to the property or assets
                 encumbered and the amount of Indebtedness secured immediately
                 prior to such renewal or extension;

         (xiv)   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;

         (xv)    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





                                       39
<PAGE>   45
                 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);

         (xvi)   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 such Liens being granted 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); and

         (xvii)  in addition to Liens permitted by clauses (i) through (xvi)
                 above, Liens on property or assets of Parent, Borrower and any
                 of their Subsidiaries if the aggregate Indebtedness of all
                 such Persons secured thereby does not exceed $100,000,000.

         SECTION 7.2.         Mergers.  Borrower will not liquidate or
dissolve, amalgamate with, consolidate with, or merge into or with, any other
Person, or sell, lease or otherwise transfer all or substantially all of its
assets unless (a) Borrower is the survivor of such amalgamation, merger or
consolidation, and (b) no Default or Event of Default has occurred and is
continuing or would occur after giving effect thereto.

         SECTION 7.3.         Asset Dispositions.  Borrower will not, and will
not permit any of its Restricted Subsidiaries to, sell, transfer, lease,
contribute or otherwise convey, or grant options, warrants or other rights with
respect to all or substantially all of its assets.  Notwithstanding the
foregoing, nothing herein shall prohibit any transfer of any assets from
Borrower to any Subsidiary of Borrower, from any Subsidiary of Borrower to
Borrower or from a Subsidiary of Borrower to another Subsidiary of Borrower.

         SECTION 7.4.         Transactions with Affiliates.  Borrower will not,
and will not permit any of its Subsidiaries to, enter into, or cause, suffer or
permit to exist any arrangement or contract with any of its other Affiliates
unless such arrangement or contract or group of arrangements or contracts, as
the case may be, are conducted on an arms-length basis; provided, however, that
this Section shall not apply to Producers Energy Marketing, LLC, a Delaware
limited liability company.

         SECTION 7.5.         Restrictive Agreements.  Borrower will not, and
will not permit any of its Subsidiaries to, enter into any agreement (excluding
this Agreement or any other Loan Document) limiting the ability of Borrower to
amend or otherwise modify this Agreement or any other Loan Document.  Borrower
will not, and will not permit any of its Restricted Subsidiaries to, enter into
any agreement which restricts or prohibits the ability of any Restricted
Subsidiary to make any payments, directly or indirectly, to Borrower by way of
dividends, advances, repayments of loans or advances, reimbursements of
management and other intercompany charges, expenses and accruals or other
returns on investments, or any other agreement or





                                       40
<PAGE>   46
arrangement which restricts the ability of any such Restricted Subsidiary to
make any payment, directly or indirectly, to Borrower.

         SECTION 7.6.         Guaranties.  Parent and Borrower will not, and
will not permit any of their Restricted Subsidiaries to, guaranty any
Indebtedness not included in the consolidated Debt of Parent and its
Subsidiaries in an aggregate outstanding principal amount at any time exceeding
$100,000,000.

                                  ARTICLE VIII

                               Events of Default

         SECTION 8.1.         Listing of Events of Default.  Each of the
following events or occurrences described in this Section 8.1 shall constitute
an "Event of Default":

         (a)     Non-Payment of Obligations.  Borrower shall default in the
                 payment or prepayment when due of any principal of any Loan,
                 or Borrower shall default (and such default shall continue
                 unremedied for a period of five (5) Business Days) in the
                 payment when due of any interest, fee or of any other
                 obligation hereunder.

         (b)     Breach of Warranty.  Any representation or warranty of
                 Borrower made or deemed to be made hereunder or in any other
                 Loan Document or any other writing or certificate furnished by
                 or on behalf of Borrower to the Global Administrative Agent,
                 the Canadian Administrative Agent, any other Agent or any
                 Lender for the purposes of or in connection with this
                 Agreement or any such other Loan Document is or shall be false
                 or misleading when made in any material respect.

         (c)     Non-Performance of Covenants and Obligations.  Borrower or
                 Parent shall default in the due performance and observance of
                 any of its obligations under Section 5.6, Section 7.2 or under
                 Article VI.

         (d)     Non-Performance of Other Covenants and Obligations.  Borrower
                 or Parent shall default in the due performance and observance
                 of any other agreement contained herein or in any other Loan
                 Document, and such default shall continue unremedied for a
                 period of 30 days after notice thereof shall have been given
                 to Borrower by the Global Administrative Agent, the Canadian
                 Administrative Agent, or the Required Lenders.

         (e)     Default on Other Indebtedness.  A default shall occur in the
                 payment when due (subject to any applicable grace period),
                 whether by acceleration or otherwise, of any direct payment
                 obligation of Parent, Borrower or any of their Restricted
                 Subsidiaries in any amount in excess of $25,000,000.





                                       41
<PAGE>   47
         (f)     [Intentionally omitted].

         (g)     Bankruptcy and Insolvency.  Borrower or any of its Restricted
                 Subsidiaries shall (a) become insolvent or generally fail to
                 pay, or admit in writing its inability or unwillingness to
                 generally pay, debts as they become due; (b) apply for,
                 consent to, or acquiesce in, the appointment of a trustee,
                 receiver, receiver and manager, sequestrator or other
                 custodian for Borrower, or any of its Restricted Subsidiaries,
                 or any substantial part of the property of any thereof, or
                 make a general assignment for the benefit of creditors; (c) in
                 the absence of such application, consent or acquiescence,
                 permit or suffer to exist the appointment of a trustee,
                 receiver, receiver and manager, sequestrator or other
                 custodian for Borrower, or any of its Restricted Subsidiaries,
                 or for a substantial part of the property of any thereof, and
                 such trustee, receiver, receiver and manager, sequestrator or
                 other custodian shall not be discharged within 60 days,
                 provided that Borrower and each Restricted Subsidiary hereby
                 expressly authorizes the Global Administrative Agent, the
                 Canadian Administrative Agent, each other Agent and each
                 Lender to appear in any court conducting any relevant
                 proceeding during such 60- day period to preserve, protect and
                 defend their rights under the Loan Documents; (d) permit or
                 suffer to exist the commencement of any bankruptcy,
                 insolvency, reorganization, debt arrangement or other case or
                 proceeding under any bankruptcy or insolvency law, or any
                 dissolution, winding up or liquidation proceeding, in respect
                 of Borrower or any of its Restricted Subsidiaries, and, if any
                 such case or proceeding is not commenced by Borrower or such
                 Restricted Subsidiary, such case or proceeding shall be
                 consented to or acquiesced in by Borrower or such Restricted
                 Subsidiary or shall result in the entry of an order for relief
                 or shall remain for 60 days undismissed, provided that
                 Borrower and each Restricted Subsidiary hereby expressly
                 authorizes the Global Administrative Agent, the Canadian
                 Administrative Agent, and each Lender to appear in any court
                 conducting any such case or proceeding during such 60-day
                 period to preserve, protect and defend their rights under the
                 Loan Documents; or (e) take any corporate or partnership
                 action authorizing, or in furtherance of, any of the
                 foregoing.  Notwithstanding parts (c) and (d) of this Section
                 8.1(g), during the 60 day periods referred to therein, and for
                 the sole purposes of (i) voting at any meeting of creditors of
                 the Borrower which may take place during such 60 day period or
                 (ii) having standing and participating in proceedings or
                 matters arising out of (c) or (d) above where any Agent or
                 Lender is acting to preserve, protect or defend its rights
                 under the Loan Documents, the Lenders, at their sole option,
                 shall be deemed to have accelerated repayment pursuant to
                 Section 8.3 and the Indebtedness of the Borrower hereunder
                 shall be deemed to have become due and payable, but such
                 deeming shall not of itself be considered a Default hereunder.

         (h)     Judgments.  Any judgment or order for the payment of money in
                 an amount of $25,000,000 or more in excess of valid and
                 collectible insurance in respect thereof





                                       42
<PAGE>   48
                 or in excess of an indemnity with respect thereto reasonably
                 acceptable to the Required Lenders shall be rendered against
                 Parent, Borrower or any of their Restricted Subsidiaries and
                 either (a) enforcement proceedings shall have been commenced
                 by any creditor upon such judgment or order, or (b) such
                 judgment shall have become final and non-appealable and shall
                 have remained outstanding for a period of 60 consecutive days.

         (i)     Change in Control.  Parent shall fail to own or control,
                 directly or indirectly, all of the outstanding shares of
                 common stock of Borrower.

         (j)     Event of Default under Australian Loan Documents or U.S. Loan
                 Documents.  Any "Event of Default" as defined in the
                 Australian Loan Documents or the U.S. Loan Documents shall
                 occur; provided that the occurrence of a "Default" as defined
                 in the Australian Loan Documents or the U.S. Loan Documents
                 shall constitute a Default under this Agreement; provided
                 further that if such "Default" is cured or waived under the
                 Australian Loan Documents or the U.S. Loan Documents, as
                 applicable, then such "Default" shall no longer constitute a
                 Default under this Agreement.

         SECTION 8.2.         Action if Bankruptcy.  If any Event of Default
described in Section 8.1(g) shall occur, the Commitments (if not theretofore
terminated) shall automatically terminate and the outstanding principal amount
of all outstanding Loans and all other obligations hereunder shall
automatically be and become immediately due and payable, without notice or
demand.

         SECTION 8.3.         Action if Other Event of Default.  If any Event
of Default (other than any Event of Default described in Section 8.2) shall
occur for any reason, whether voluntary or involuntary, and be continuing, the
Canadian Administrative Agent, upon the direction of the Required Lenders,
shall by notice to Borrower declare all of the outstanding principal amount of
the Loans and all other obligations hereunder to be due and payable and the
Commitments (if not theretofore terminated) to be terminated, whereupon the
full unpaid amount of such Loans and other obligations shall be and become
immediately due and payable, without further notice, demand or presentment, and
the Commitments shall terminate.

                                   ARTICLE IX

                                     Agents

         Each of the Lenders hereby irrevocably appoints The Chase Manhattan
Bank as the Global Administrative Agent, Morgan Guaranty Trust Company as
Global Documentation Agent, Bank of Montreal as Canadian Administrative Agent,
Royal Bank of Canada as Canadian Documentation Agent, The Chase Manhattan Bank
of Canada as Canadian Syndication Agent, and authorizes each such Agent to take
such actions on its behalf and to exercise such powers as are





                                       43
<PAGE>   49
delegated to such Agent by the terms hereof, together with such actions and
powers as are reasonably incidental thereto.

         Any bank serving as an Agent hereunder shall have the same rights and
powers in its capacity as a Lender as any other Lender and may exercise the
same as though it were not an Agent, and such bank and its Affiliates may
accept deposits from, lend money to and generally engage in any kind of
business with Borrower or any Subsidiary or other Affiliate thereof as if it
were not an Agent hereunder.

         The Agents shall not have any duties or obligations except those
expressly set forth herein.  Without limiting the generality of the foregoing,
(a) the Agents shall not be subject to any fiduciary or other implied duties,
regardless of whether a Default has occurred and is continuing, (b) each Agent
shall not have any duty to take any discretionary action or exercise any
discretionary powers, except discretionary rights and powers expressly
contemplated hereby that such Agent is required to exercise in writing by the
Required Lenders (or such other number or percentage of the Lenders as shall be
necessary under the circumstances as provided in Section 10.2), and (c) except
as expressly set forth herein, the Agents shall not have any duty to disclose,
and shall not be liable for the failure to disclose, any information relating
to Borrower or any of its Subsidiaries that is communicated to or obtained by
the bank serving as such Agent or any of its Affiliates in any capacity.  Each
Agent shall not be liable for any action taken or not taken by it with the
consent or at the request of the Required Lenders (or such other number or
percentage of the Lenders as shall be necessary under the circumstances as
provided in Section 10.2) or in the absence of its own gross negligence or
willful misconduct.  Each Agent shall be deemed not to have knowledge of any
Default unless and until written notice thereof is given to such Agent by
Borrower or a Lender, and such Agent shall not be responsible for or have any
duty to ascertain or inquire into (i) any statement, warranty or representation
made in or in connection with this Agreement, (ii) the contents of any
certificate, report or other document delivered hereunder or in connection
herewith, (iii) the performance or observance of any of the covenants,
agreements or other terms or conditions set forth herein, (iv) the validity,
enforceability, effectiveness or genuineness of this Agreement or any other
agreement, instrument or document, or (v) the satisfaction of any condition set
forth in Article IV or elsewhere herein, other than to confirm receipt of items
expressly required to be delivered to such Agent.

         The Canadian Administrative Agent, the Global Administrative Agent and
the other Agents shall be entitled to rely upon, and shall not incur any
liability for relying upon, any notice, request, certificate, consent,
statement, instrument, document or other writing believed by it to be genuine
and to have been signed or sent by the proper Person.  The Canadian
Administrative Agent, the Global Administrative Agent and the other Agents also
may rely upon any statement made to it orally or by telephone and believed by
it to be made by the proper Person, and shall not incur any liability for
relying thereon.  The Canadian Administrative Agent, the Global Administrative
Agent and the other Agents may consult with legal counsel (who may be counsel
for Borrower), independent accountants and other experts selected by it, and
shall not be liable





                                       44
<PAGE>   50
for any action taken or not taken by it in accordance with the advice of any
such counsel, accountants or experts.

         Any Agent may perform any and all its duties and exercise its rights
and powers by or through any one or more sub-agents appointed by such Agent.
Any Agent and any such sub-agent may perform any and all its duties and
exercise its rights and powers through their respective Related Parties.  The
exculpatory provisions of the preceding paragraphs shall apply to any such
sub-agent and to the Related Parties of such Agent and any such sub-agent, and
shall apply to their respective activities in connection with the syndication
of the credit facilities provided for herein as well as activities as an Agent.

         Subject to the appointment and acceptance of a successor Global
Administrative Agent or Canadian Administrative Agent as provided in this
paragraph, the Global Administrative Agent or the Canadian Administrative Agent
may resign at any time by notifying the Lenders and Borrower.  Upon any such
resignation, Borrower shall have the right, in consultation with the Combined
Required Lenders, to appoint one of the Lenders as a successor.  If no
successor shall have been so appointed by Borrower and shall have accepted such
appointment within 30 days after the retiring Global Administrative Agent or
Canadian Administrative Agent gives notice of its resignation, then the
retiring Global Administrative Agent or Canadian Administrative Agent may, on
behalf of the Lenders, appoint a successor Global Administrative Agent or
Canadian Administrative Agent which shall be a bank with an office in New York,
New York, or Toronto, Canada, respectively, or an Affiliate of any such bank.
Upon the acceptance of its appointment as Global Administrative Agent or
Canadian Administrative Agent hereunder by a successor, such successor shall
succeed to and become vested with all the rights, powers, privileges and duties
of the retiring Global Administrative Agent or Canadian Administrative Agent,
and the retiring Global Administrative Agent or Canadian Administrative Agent
shall be discharged from its duties and obligations hereunder.  The fees
payable by Borrower to a successor Global Administrative Agent or Canadian
Administrative Agent shall be the same as those payable to its predecessor
unless otherwise agreed between Borrower and such successor.  After the Global
Administrative Agent's or Canadian Administrative Agent's resignation
hereunder, the provisions of this Article and Section 10.3 shall continue in
effect for the benefit of such retiring Global Administrative Agent or Canadian
Administrative Agent, its sub-agents and their respective Related Parties in
respect of any actions taken or omitted to be taken by any of them while it was
acting as Global Administrative Agent or Canadian Administrative Agent,
respectively.

         Each Lender acknowledges that it has, independently and without
reliance upon any Agent or any other Lender and based on such documents and
information as it has deemed appropriate, made its own credit analysis and
decision to enter into this Agreement.  Each Lender also acknowledges that it
will, independently and without reliance upon any Agent or any other Lender and
based on such documents and information as it shall from time to time deem
appropriate, continue to make its own decisions in taking or not taking action
under or based upon this Agreement, any related agreement or any document
furnished hereunder or thereunder.





                                       45
<PAGE>   51
                                   ARTICLE X

                                 Miscellaneous

         SECTION 10.1.        Notices.  Except in the case of notices and other
communications expressly permitted to be given by telephone, all notices and
other communications provided for herein shall be in writing and shall be
delivered by hand or overnight courier service, mailed by certified or
registered mail or sent by telecopy, as follows:

         (a)     if to Borrower, to:

                          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:

                          Manager, Banking and Cash Management
                          Apache Corporation
                          2000 Post Oak Boulevard, Suite 100
                          Houston, Texas  77056-4400
                          Telephone:       (713) 296-6642
                          Facsimile:       (713) 296-6477

                 and with copy to:

                          Vice President and General Counsel
                          Apache Corporation
                          2000 Post Oak Boulevard, Suite 100
                          Houston, Texas  77056-4400
                          Telephone:       (713) 296-6204
                          Facsimile:       (713) 296-6458





                                       46
<PAGE>   52
         (b)     if to the Global Administrative Agent, to:

                          The Chase Manhattan Bank
                          Loan & Agency Services Group
                          One Chase Manhattan Plaza
                          8th Floor
                          New York, New York 10081
                          Attention:       Vincent Siino
                          Telephone:       (212) 552-7423
                          Facsimile:       (212) 552-5777

                 with a copy to:

                          The Chase Manhattan Bank
                          707 Travis, 5 TCB N
                          Houston, Texas 77002
                          Attention:       Peter Licalzi
                          Telephone:       (713) 216-8870
                          Facsimile:       (713) 216-8869

         (c)     if to the Canadian Administrative Agent, to:

                          Bank of Montreal
                          24th Floor, 1st Canadian Place
                          Toronto, Ontario
                          Canada  M5X 1A1
                          Attention:       Paul Montgomery
                          Telephone:       (416) 867-7110
                          Facsimile:       (416) 867-5938

                 with a copy to:

                          Bank of Montreal
                          Global Distribution
                          22nd Floor, F.C.P.
                          Toronto, Ontario
                          Canada  M5X 1A1
                          Attention:       Manager
                          Telephone:       (416) 867-5718
                          Facsimile:       (416) 867-5612

         (d)     if to any other Lender, to it at its address (or telecopy
number) provided to the Global Administrative Agent, the Canadian
Administrative Agent and Borrower or as set forth in its Administrative
Questionnaire.





                                       47
<PAGE>   53
Any party hereto may change its address or telecopy number for notices and
other communications hereunder by notice to the other parties hereto.  All
notices and other communications given to any party hereto in accordance with
the provisions of this Agreement shall be deemed to have been given on the date
of receipt.

         SECTION 10.2.        Waivers; Amendments.

         (a)     No failure or delay by the Global Administrative Agent, the
Canadian Administrative Agent or any Lender in exercising any right or power
hereunder shall operate as a waiver thereof, nor shall any single or partial
exercise of any such right or power, or any abandonment or discontinuance of
steps to enforce such a right or power, preclude any other or further exercise
thereof or the exercise of any other right or power.  The rights and remedies
of the Global Administrative Agent, the Canadian Administrative Agent and the
Lenders hereunder are cumulative and are not exclusive of any rights or
remedies that they would otherwise have.  No waiver of any provision of this
Agreement or consent to any departure by Borrower therefrom shall in any event
be effective unless the same shall be permitted by paragraph (b) of this
Section, and then such waiver or consent shall be effective only in the
specific instance and for the purpose for which given.  Without limiting the
generality of the foregoing, the making of a Loan shall not be construed as a
waiver of any Default, regardless of whether the Global Administrative Agent,
the Canadian Administrative Agent or any Lender may have had notice or
knowledge of such Default at the time.

         (b)     Any of the Combined Loan Documents or any provision thereof
may be waived, amended or modified pursuant to an agreement or agreements in
writing entered into by Borrower and the Combined Required Lenders or by
Borrower and the Global Administrative Agent and the Canadian Administrative
Agent with the consent of the Combined Required Lenders; provided that the same
waiver, amendment or modification is requested by Parent in connection with
each of the Combined Credit Agreements; and provided further that no such
agreement shall amend, modify or otherwise affect the rights or duties of (i)
the Lenders described in the first proviso of Section 10.2(c) without the prior
written consent of each Lender affected thereby and (ii) the Global
Administrative Agent or the Canadian Administrative Agent without the prior
written consent of the Global Administrative Agent or the Canadian
Administrative Agent, respectively.

         (c)     Except as provided for in Section 10.2(b) above, neither this
Agreement nor any provision hereof may be waived, amended or modified except
pursuant to an agreement or agreements in writing entered into by Borrower and
the Required Lenders or by Borrower and the Global Administrative Agent and the
Canadian Administrative Agent with the consent of the Required Lenders;
provided that no such agreement shall (i) increase the Commitment of any Lender
or the Commitments without the written consent of such Lender or each Lender,
respectively, (ii) reduce the principal amount of any Loan or reduce the rate
of interest thereon, or reduce any fees payable hereunder, without the written
consent of each Lender affected thereby, (iii) postpone the scheduled date of
payment of the principal amount of any Loan, or any





                                       48
<PAGE>   54
interest thereon, or any fees payable hereunder, or reduce the amount of, waive
or excuse any such payment, or postpone the scheduled date of expiration of any
Commitment, without the written consent of each Lender affected thereby, (iv)
change Section 2.17(b) or (c) in a manner that would alter the pro rata sharing
of payments required thereby, without the written consent of each Lender, or
(v) change any of the provisions of this Section or the definition of "Required
Lenders" or any other provision hereof specifying the number or percentage of
Lenders required to waive, amend or modify any rights hereunder or make any
determination or grant any consent hereunder, without the written consent of
each Lender; provided further that no such agreement shall amend, modify or
otherwise affect the rights or duties of the Global Administrative Agent or the
Canadian Administrative Agent hereunder without the prior written consent of
the Global Administrative Agent or the Canadian Administrative Agent,
respectively.

         SECTION 10.3.        Expenses; Indemnity; Damage Waiver.

         (a)     Borrower shall pay (i) all reasonable out-of-pocket expenses
incurred by the Agents and their Affiliates, including the reasonable fees,
charges and disbursements of counsel for the Agents (on a solicitor and his own
client basis), in connection with the syndication of the credit facilities
provided for herein, the preparation and administration of this Agreement or
any amendments, modifications or waivers of the provisions hereof (whether or
not the transactions contemplated hereby or thereby shall be consummated) and
(ii) all reasonable out-of-pocket expenses incurred by the Agents or any
Lender, including the fees, charges and disbursements of any counsel (on a
solicitor and his own client basis) for the Agents or any Lender, in connection
with the enforcement or protection of its rights in connection with this
Agreement, including its rights under this Section, or in connection with the
Loans made hereunder, including all such out-of-pocket expenses incurred during
any workout, restructuring or negotiations in respect of such Loans or this
Agreement.

         (b)     Borrower shall indemnify the Agents and each Lender, and each
Related Party of any of the foregoing Persons (each such Person being called an
"Indemnitee") against, and hold each Indemnitee harmless from, any and all
losses, claims, damages, liabilities and related expenses, including the
reasonable fees, charges and disbursements of any counsel (or a solicitor and
his own client basis) for any Indemnitee, incurred by or asserted against any
Indemnitee arising out of, in connection with, or as a result of (i) the
execution or delivery of this Agreement or any agreement or instrument
contemplated hereby, the performance by the parties hereto of their respective
obligations hereunder or the consummation of the Transactions or any other
transactions contemplated hereby, (ii) any Loan or the actual or proposed use
of the proceeds therefrom, (iii) any actual or alleged presence or release of
Hazardous Materials on or from any property owned or operated by Borrower or
any of its Subsidiaries, or any Environmental Liability related in any way to
Borrower or any of its Subsidiaries, or (iv) any actual or prospective claim,
litigation, investigation or proceeding relating to any of the foregoing,
whether based on contract, tort or any other theory and regardless of whether
any Indemnitee is a party thereto; provided that such indemnity shall not, as
to any Indemnitee, be available to the extent that such losses, claims,
damages, liabilities or related expenses (i) resulted from the gross





                                       49
<PAGE>   55
negligence or willful misconduct of such Indemnitee or (ii) arise in connection
with any issue in litigation commenced by Borrower or any of its Subsidiaries
against any Indemnitee for which a final judgment is entered in favor of
Borrower or any of its Subsidiaries against such Indemnitee.

         (c)     To the extent that Borrower fails to pay any amount required
to be paid by it to the Global Administrative Agent or the Canadian
Administrative Agent under paragraph (a) or (b) of this Section, each Lender
severally agrees to pay to the Global Administrative Agent or the Canadian
Administrative Agent, such Lender's Applicable Percentage (determined as of the
time that the applicable unreimbursed expense or indemnity payment is sought)
of such unpaid amount; provided that the unreimbursed expense or indemnified
loss, claim, damage, liability or related expense, as the case may be, was
incurred by or asserted against the Global Administrative Agent or the Canadian
Administrative Agent, respectively.

         (d)     To the extent permitted by applicable law, Borrower shall not
assert, and hereby waives, any claim against any Indemnitee, on any theory of
liability, for special, indirect, consequential or punitive damages (as opposed
to direct or actual damages) arising out of, in connection with, or as a result
of, this Agreement or any agreement or instrument contemplated hereby, the
Transactions or any Loan or the use of the proceeds thereof, except for any
such claim arising from such Indemnitee's gross negligence or willful
misconduct.

         (e)     All amounts due under this Section shall be payable not later
than thirty (30) days after written demand therefor.

         SECTION 10.4.        Successors and Assigns.

         (a)     The provisions of this Agreement shall be binding upon and
inure to the benefit of the parties hereto and their respective successors and
assigns permitted hereby, except that Borrower may not assign or otherwise
transfer any of its rights or obligations hereunder without the prior written
consent of each Lender (and any attempted assignment or transfer by Borrower
without such consent shall be null and void).  Nothing in this Agreement,
expressed or implied, shall be construed to confer upon any Person (other than
the parties hereto, their respective successors and assigns permitted hereby
and, to the extent expressly contemplated hereby, the Related Parties of each
of the Global Administrative Agent, the Canadian Administrative Agent and the
Lenders) any legal or equitable right, remedy or claim under or by reason of
this Agreement.

         (b)     Any Lender may assign to one or more assignees which are
residents in Canada for purposes of the Income Tax Act (Canada) all or a
portion of its rights and obligations under this Agreement (including all or a
portion of its Commitment and the Loans at the time owing to it); provided
that (i) except in the case of an assignment to a Lender or an Affiliate of a
Lender, each of Borrower, the Canadian Administrative Agent and the Global
Administrative Agent must give their prior written consent to such assignment
(which consent shall not be unreasonably withheld), (ii) except in the case of
an assignment to a Lender or an Affiliate of a Lender or an assignment





                                       50
<PAGE>   56
of the entire remaining amount of the assigning Lender's Commitment, the amount
of the Commitment of the assigning Lender subject to each such assignment
(determined as of the date the Assignment and Acceptance with respect to such
assignment is delivered to the Canadian Administrative Agent and the Global
Administrative Agent) shall be in increments of $1,000,000 and not less than
$10,000,000 unless each of Borrower, the Canadian Administrative Agent and the
Global Administrative Agent otherwise consent, (iii) each partial assignment
shall be made as an assignment of a proportionate part of all the assigning
Lender's rights and obligations under this Agreement, (iv) the parties to each
assignment shall execute and deliver to the Canadian Administrative Agent and
the Global Administrative Agent an Assignment and Acceptance, together with a
processing and recordation fee of $3,500 to the Canadian Administrative Agent,
and (v) the assignee, if it shall not be a Lender, shall deliver to the
Canadian Administrative Agent and the Global Administrative Agent an
Administrative Questionnaire; and provided further that any consent of Borrower
otherwise required under this paragraph shall not be required if an Event of
Default under Section 8.1 has occurred and is continuing.  Subject to
acceptance and recording thereof pursuant to paragraph (d) of this Section,
from and after the effective date specified in each Assignment and Acceptance
the assignee thereunder shall be a party hereto and, to the extent of the
interest assigned by such Assignment and Acceptance, have the rights and
obligations of a Lender under this Agreement, and the assigning Lender
thereunder shall, to the extent of the interest assigned by such Assignment and
Acceptance, be released from its obligations under this Agreement (and, in the
case of an Assignment and Acceptance covering all of the assigning Lender's
rights and obligations under this Agreement, such Lender shall cease to be a
party hereto but shall continue to be entitled to the benefits of Sections
2.14, 2.15, 2.16, 2.17, 2.19 and 10.3).  Any assignment or transfer by a Lender
of rights or obligations under this Agreement that does not comply with this
paragraph shall be treated for purposes of this Agreement as a sale by such
Lender of a participation in such rights and obligations in accordance with
paragraph (e) of this Section.

         (c)     The Canadian Administrative Agent and the Global
Administrative Agent, acting for this purpose as an agent of Borrower, shall
maintain at one of its offices in Toronto, Canada, and The City of New York,
respectively, a copy of each Assignment and Acceptance delivered to it and a
register for the recordation of the names and addresses of the Lenders, and the
Commitment of, and principal amount of the Loans owing to, each Lender pursuant
to the terms hereof from time to time (the "Register").  The entries in the
Register shall be conclusive, and Borrower, the Canadian Administrative Agent,
the Global Administrative Agent and the Lenders may treat each Person whose
name is recorded in the Register pursuant to the terms hereof as a Lender
hereunder for all purposes of this Agreement, notwithstanding notice to the
contrary.  The Register shall be available for inspection by Borrower and any
Lender, at any reasonable time and from time to time upon reasonable prior
notice.

         (d)     Upon its receipt of a duly completed Assignment and Acceptance
executed by an assigning Lender and an assignee, the assignee's completed
Administrative Questionnaire (unless the assignee shall already be a Lender
hereunder), the processing and recordation fee referred to in paragraph (b) of
this Section and any written consent to such assignment required by paragraph





                                       51
<PAGE>   57
(b) of this Section, the Canadian Administrative Agent and the Global
Administrative Agent shall accept such Assignment and Acceptance and record the
information contained therein in the Register and will provide prompt written
notice to Borrower of the effectiveness of such Assignment.  No assignment
shall be effective for purposes of this Agreement unless it has been recorded
in the Register as provided in this paragraph.

         (e)     Any Lender may, without the consent of Borrower, the Canadian
Administrative Agent or the Global Administrative Agent, sell participations to
one or more banks or other entities which are resident in Canada for purposes
of the Income Tax Act (Canada) (a "Participant") in all or a portion of such
Lender's rights and obligations under this Agreement (including all or a
portion of its Commitment and the Loans owing to it); provided that (i) such
Lender's obligations under this Agreement shall remain unchanged, (ii) such
Lender shall remain solely responsible to the other parties hereto for the
performance of such obligations, (iii) Borrower, the Canadian Administrative
Agent, the Global Administrative Agent and the other Lenders shall continue to
deal solely and directly with such Lender in connection with such Lender's
rights and obligations under this Agreement, and (iv) if such Participant is
not a Lender or an Affiliate of a Lender, such Lender shall have given notice
to Borrower of the name of the Participant and the amount of such
participation.  Any agreement or instrument pursuant to which a Lender sells
such a participation shall provide that such Lender shall retain the sole right
to enforce this Agreement and to approve any amendment, modification or waiver
of any provision of this Agreement; provided that such agreement or instrument
may provide that such Lender will not, without the consent of the Participant,
agree to any amendment, modification or waiver described in the first proviso
to Section 10.2(c) that affects such Participant.  Subject to paragraph (f) of
this Section, Borrower agrees that each Participant shall be entitled to the
benefits of Sections 2.14, 2.15 and 2.16 to the same extent as if it were a
Lender and had acquired its interest by assignment pursuant to paragraph (b) of
this Section.  To the extent permitted by law, each Participant also shall be
entitled to the benefits of Section 10.8 as though it were a Lender, provided
such Participant agrees to be subject to Section 2.17(c) as though it were a
Lender.

         (f)     A Participant shall not be entitled to receive any greater
payment under Section 2.14, 2.15 or 2.16 than the applicable Lender would have
been entitled to receive with respect to the participation sold to such
Participant, unless Borrower shall expressly agree otherwise in writing.  A
Participant that would be a Foreign Lender if it were a Lender shall not be
entitled to the benefits of Section 2.16 unless Borrower is notified of the
participation sold to such Participant and such Participant agrees, for the
benefit of Borrower, to comply with Section 2.16(e) as though it were a Lender.

         SECTION 10.5.        Survival.  All covenants, agreements,
representations and warranties made by Borrower herein and in the certificates
or other instruments delivered in connection with or pursuant to this Agreement
shall be considered to have been relied upon by the other parties hereto and
shall survive the execution and delivery of this Agreement and the making of
any Loans, regardless of any investigation made by any such other party or on
its behalf and notwithstanding that the Canadian Administrative Agent, the
Global Administrative Agent or any





                                       52
<PAGE>   58
Lender may have had notice or knowledge of any Default or incorrect
representation or warranty at the time any credit is extended hereunder, and
shall continue in full force and effect as long as the principal of or any
accrued interest on any Loan or any fee or any other amount payable under this
Agreement is outstanding and unpaid and so long as the Commitments have not
expired or terminated.  The provisions of Sections 2.14, 2.15, 2.16, 2.17, 2.19
and 10.3 and Article IX shall survive and remain in full force and effect
regardless of the consummation of the transactions contemplated hereby, the
repayment of the Loans, the expiration or termination of the Commitments or the
termination of this Agreement or any provision hereof.

         SECTION 10.6.        Counterparts; Integration; Effectiveness.  This
Agreement may be executed in counterparts (and by different parties hereto on
different counterparts), each of which shall constitute an original, but all of
which when taken together shall constitute a single contract.  This Agreement
and any separate letter agreements with respect to fees payable to the Canadian
Administrative Agent constitute the entire contract among the parties relating
to the subject matter hereof and supersede any and all previous agreements and
understandings, oral or written, relating to the subject matter hereof.  Except
as provided in Section 4.1, this Agreement shall become effective when it shall
have been executed by the Canadian Administrative Agent and the Global
Administrative Agent and when the Canadian Administrative Agent and the Global
Administrative Agent shall have received counterparts hereof which, when taken
together, bear the signatures of each of the other parties hereto, and
thereafter shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and assigns.  Delivery of an executed
counterpart of a signature page of this Agreement by telecopy shall be
effective as delivery of a manually executed counterpart of this Agreement.

         SECTION 10.7.        Severability.  Any provision of this Agreement
held to be invalid, illegal or unenforceable in any jurisdiction shall, as to
such jurisdiction, be ineffective to the extent of such invalidity, illegality
or unenforceability without affecting the validity, legality and enforceability
of the remaining provisions hereof; and the invalidity of a particular
provision in a particular jurisdiction shall not invalidate such provision in
any other jurisdiction.

         SECTION 10.8.        Right of Setoff.  If an Event of Default shall
have occurred and be continuing and the Obligations of Borrower shall have been
accelerated, each Lender and each of its Affiliates is hereby authorized at any
time and from time to time, to the fullest extent permitted by law, to set off
and apply any and all deposits (general or special, time or demand, provisional
or final) at any time held and other obligations at any time owing by such
Lender or Affiliate to or for the credit or the account of Borrower against any
of and all the obligations of Borrower now or hereafter existing under this
Agreement held by such Lender, irrespective of whether or not such Lender shall
have made any demand under this Agreement and although such obligations may be
unmatured.  The rights of each Lender under this Section are in addition to
other rights and remedies (including other rights of setoff) which such Lender
may have.





                                       53
<PAGE>   59
         SECTION 10.9.        GOVERNING LAW; JURISDICTION; CONSENT TO SERVICE OF
PROCESS.

         (a)     THIS AGREEMENT AND THE OTHER 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.

         (b)     BORROWER HEREBY IRREVOCABLY AND UNCONDITIONALLY SUBMITS, FOR
ITSELF AND ITS PROPERTY, TO THE NONEXCLUSIVE JURISDICTION OF THE COURTS OF THE
PROVINCE OF ALBERTA, AND ANY APPELLATE COURT FROM ANY THEREOF, IN ANY ACTION OR
PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT, OR FOR RECOGNITION OR
ENFORCEMENT OF ANY JUDGMENT, AND EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY
AND UNCONDITIONALLY AGREES THAT ALL CLAIMS IN RESPECT OF ANY SUCH ACTION OR
PROCEEDING MAY BE HEARD AND DETERMINED IN SUCH COURTS OF THE PROVINCE OF
ALBERTA.  EACH OF THE PARTIES HERETO AGREES THAT A FINAL JUDGMENT IN ANY SUCH
ACTION OR PROCEEDING SHALL BE CONCLUSIVE AND MAY BE ENFORCED IN OTHER
JURISDICTIONS BY SUIT ON THE JUDGMENT OR IN ANY OTHER MANNER PROVIDED BY LAW.
NOTHING IN THIS AGREEMENT SHALL AFFECT ANY RIGHT THAT THE AGENTS OR ANY LENDER
MAY OTHERWISE HAVE TO BRING ANY ACTION OR PROCEEDING RELATING TO THIS AGREEMENT
AGAINST BORROWER OR ITS PROPERTIES IN THE COURTS OF ANY JURISDICTION.

         (c)     BORROWER HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES, TO THE
FULLEST EXTENT IT MAY LEGALLY AND EFFECTIVELY DO SO, ANY OBJECTION WHICH IT MAY
NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY SUIT, ACTION OR PROCEEDING
ARISING OUT OF OR RELATING TO THIS AGREEMENT IN ANY COURT REFERRED TO IN
PARAGRAPH (b) OF THIS SECTION.  EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY
WAIVES, TO THE FULLEST EXTENT PERMITTED BY LAW, THE DEFENSE OF AN INCONVENIENT
FORUM TO THE MAINTENANCE OF SUCH ACTION OR PROCEEDING IN ANY SUCH COURT.

         (d)     EACH PARTY TO THIS AGREEMENT IRREVOCABLY CONSENTS TO SERVICE
OF PROCESS BY REGISTERED MAIL, POSTAGE PREPAID, OR BY PERSONAL SERVICE WITHIN
OR WITHOUT THE PROVINCE OF ALBERTA.  NOTHING IN THIS AGREEMENT WILL AFFECT THE
RIGHT OF ANY PARTY TO THIS AGREEMENT TO SERVE PROCESS IN ANY OTHER MANNER
PERMITTED BY LAW.

         SECTION 10.10.       Headings.  Article and Section headings and the
Table of Contents used herein are for convenience of reference only, are not
part of this Agreement and shall not affect the construction of, or be taken
into consideration in interpreting, this Agreement.





                                       54
<PAGE>   60
         SECTION 10.11.       Confidentiality.  Each of the Agents and the
Lenders agrees to maintain the confidentiality of the Information (as defined
below), except that Information may be disclosed (a) to its and its Affiliates'
directors, officers, employees and agents, including accountants, legal counsel
and other advisors (it being understood that the Persons to whom such
disclosure is made will be informed of the confidential nature of such
Information and instructed to keep such Information confidential), (b) to the
extent requested by any regulatory authority, (c) to the extent required by
applicable laws or regulations or by any subpoena or similar legal process, (d)
to any other party to this Agreement, (e) in connection with the exercise of
any remedies hereunder or any suit, action or proceeding relating to this
Agreement or the enforcement of rights hereunder, (f) subject to an agreement
containing provisions substantially the same as those of this Section, to any
assignee of or Participant in, or any prospective assignee of or Participant
in, any of its rights or obligations under this Agreement, (g) with the consent
of Borrower or (h) to the extent such Information (A) becomes publicly
available other than as a result of a breach of this Section by any Person or
(B) becomes available to any Agent or any Lender on a nonconfidential basis
from a source other than Borrower or any Person obligated to maintain the
confidentiality of such Information.  Prior to disclosing any Information under
clause (c) above, the Agent or Lender required or asked to make such disclosure
shall make a good faith effort to give Borrower prior notice of such proposed
disclosure to permit Borrower to attempt to obtain a protective order or other
appropriate injunctive relief.  For the purposes of this Section, "Information"
means all information received from Borrower relating to Borrower or its
business, other than any publicly available information and such information
that is available to any Agent or any Lender on a nonconfidential basis prior
to disclosure by Borrower; provided that, in the case of information received
from Borrower after the date hereof, such information is clearly identified at
the time of delivery as confidential.  Any Person required to maintain the
confidentiality of Information as provided in this Section shall be considered
to have complied with its obligation to do so if such Person has exercised the
same degree of care to maintain the confidentiality of such Information as such
Person would accord to its own confidential information.

         SECTION 10.12.       Interest Rate Limitation.  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 Borrower to a 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 Lender or Agent limiting rates of interest which may be
charged or collected by such Lender or Agent.  Accordingly, if the transactions
contemplated hereby would be illegal, unenforceable, usurious or criminal under
laws applicable to a Lender or Agent (including the laws of any jurisdiction
whose laws may be mandatorily applicable to such Lender or Agent
notwithstanding anything to the contrary in this Agreement or any other Loan
Document but subject to Section 2.12 hereof) then, in that event,
notwithstanding anything to the contrary in this Agreement or any other Loan
Document, it is agreed as follows:

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





                                       55
<PAGE>   61
                 (ii)         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 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 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 Borrower by such Lender or Agent (or, if such
         consideration shall have been paid in full, such excess refunded to
         Borrower);

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

                 (iv)         if at any time the interest provided pursuant to
         this Section or any other clause of this Agreement or any other Loan
         Document, together with any other fees or compensation payable
         pursuant to this Agreement or any other Loan Document and deemed
         interest under laws applicable to such 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 Lender
         or Agent pursuant to this Agreement shall be limited, notwithstanding
         anything to the contrary in this Agreement or any other 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 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 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 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), 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; and

                 (v)          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 Loan Documents) by such Lender or Agent would cause such
         Lender to charge Borrower a criminal rate of interest, the 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 Lender or Agent, as applicable, and if
         received such affected Lender or Agent will return such funds to
         Borrower so that the rate of interest paid by Borrower shall not
         exceed a criminal rate of interest from the date this Agreement was
         entered into.





                                       56
<PAGE>   62
         SECTION 10.13.       NO ORAL AGREEMENTS.  THIS WRITTEN AGREEMENT AND
THE OTHER 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]





                                       57
<PAGE>   63
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed by their respective authorized officers as of the day and year
first above written.



                                         APACHE CANADA LTD.


                                         By: /S/ Apache Canada Ltd.           
                                             -----------------------------------
                                         Name:   Matthew W. Dundrea
                                         Title:  Treasurer






                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 1
<PAGE>   64

                                         THE CHASE MANHATTAN BANK, as Global
                                         Administrative Agent


                                         By: /S/ The Chase Manhattan Bank     
                                             -----------------------------------
                                         Name:
                                         Title:






                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 2
<PAGE>   65

                                         MORGAN GUARANTY TRUST COMPANY, as 
                                         Global Documentation Agent


                                         By: /S/ Morgan Guaranty Trust Company
                                             -----------------------------------
                                         Name:
                                         Title:






                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 3
<PAGE>   66

                                         BANK OF MONTREAL, as Canadian 
                                         Administrative Agent


                                         By: /S/ Bank of Montreal            
                                             -----------------------------------
                                         Name:
                                         Title:






                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 4
<PAGE>   67

                                         ROYAL BANK OF CANADA, as Canadian
                                         Documentation Agent


                                         By: /S/ Royal Bank of Canada        
                                             -----------------------------------
                                         Name:
                                         Title:






                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 5
<PAGE>   68

                                     THE CHASE MANHATTAN BANK OF CANADA,
                                     as Canadian Syndication Agent


                                     By: /S/ The Chase Manhattan Bank of Canada
                                         ---------------------------------------
                                     Name:
                                     Title:






                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 6
<PAGE>   69
                                     THE CHASE MANHATTAN BANK OF CANADA, as 
                                     Lender
                                     
                                     
                                     By: /S/ The Chase Manhattan Bank of Canada
                                         ---------------------------------------
                                     Name:
                                     Title:





                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 7
<PAGE>   70

                                         [S]
                                         BANK OF MONTREAL, as Lender


                                         By: /S/ Bank of Montreal           
                                             -----------------------------------
                                         Name:
                                         Title:






                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 8
<PAGE>   71

                                         ROYAL BANK OF CANADA, as Lender


                                         By: /S/ Royal Bank of Canada  
                                            ------------------------------------
                                         Name:
                                         Title:






                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 9
<PAGE>   72

                                         THE BANK OF NOVA SCOTIA, as Lender


                                         By: /S/ The Bank of Nova Scotia   
                                             -----------------------------------
                                         Name:
                                         Title:






                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 10
<PAGE>   73

                                     CANADIAN IMPERIAL BANK OF COMMERCE, 
                                     as Lender


                                     By: /S/ Canadian Imperial Bank of Commerce
                                         ---------------------------------------
                                     Name:
                                     Title:





                                     By: /S/ Canadian Imperial Bank of Commerce
                                         ---------------------------------------
                                     Name:
                                     Title:






                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 11
<PAGE>   74

                                    THE TORONTO-DOMINION BANK, as Lender


                                    By: /S/ The Toronto-Dominion Bank     
                                        ----------------------------------------
                                    Name:
                                    Title:






                 [SIGNATURE PAGE TO CANADIAN CREDIT AGREEMENT]

                                     S - 12

<PAGE>   1
                                                                    EXHIBIT 10.3



                         [AUSTRALIAN CREDIT AGREEMENT]


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


                                CREDIT AGREEMENT

                           dated as of June 12, 1997

                                     among

                             APACHE ENERGY LIMITED,
                       APACHE OIL AUSTRALIA PTY LIMITED,

                           THE LENDERS PARTY HERETO,

                         MORGAN GUARANTY TRUST COMPANY,
                         as Global Documentation Agent,

                   BANK OF AMERICA NATIONAL TRUST AND SAVINGS
                          ASSOCIATION, SYDNEY BRANCH,
                       as Australian Documentation Agent,

                           THE CHASE MANHATTAN BANK,
                        as Australian Syndication Agent,

                            CITISECURITIES LIMITED,
                      as Australian Administrative Agent,

                                      and

                           THE CHASE MANHATTAN BANK,
                         as Global Administrative Agent

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

                             CHASE SECURITIES INC.,
                               as Global Arranger

                           JP MORGAN SECURITIES INC.,
                             as Global Co-Arranger

================================================================================
<PAGE>   2




                               TABLE OF CONTENTS



<TABLE>
<S>                  <C>                                                                                               <C>
ARTICLE I            Definitions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
         1.1.        Defined Terms  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
         1.2.        [Intentionally omitted]  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
         1.3.        Terms Generally  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
         1.4.        Accounting Terms; GAAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14

ARTICLE II           The Credits  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
         2.1.        Commitments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
         2.2.        Loans and Borrowings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
         2.3.        Requests for Borrowings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
         2.4.        [Intentionally omitted]  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
         2.5.        Funding of Borrowings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
         2.6.        Extension of Maturity Date and of Commitments  . . . . . . . . . . . . . . . . . . . . . . . . .  17
         2.7.        Interest Elections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19
         2.8.        Termination and Reduction of Commitments . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
         2.9.        Repayment of Loans; Evidence of Debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
         2.10.       Prepayment of Loans  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
         2.11.       Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
         2.12.       Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
         2.13.       Alternate Rate of Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
         2.14.       Increased Costs  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
         2.15.       Break Funding Payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25
         2.16.       Taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  26
         2.17.       Payments Generally; Pro Rata Treatment; Sharing of Set-offs  . . . . . . . . . . . . . . . . . .  27
         2.18.       Mitigation Obligations; Replacement of Lenders . . . . . . . . . . . . . . . . . . . . . . . . .  28
         2.19.       Currency Conversion and Currency Indemnity . . . . . . . . . . . . . . . . . . . . . . . . . . .  29

ARTICLE III          Representations and Warranties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  30
         3.1.        Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  30
         3.2.        Authorization and Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  30
         3.3.        Government Approval and Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31
         3.4.        Superannuation Scheme  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31
         3.5.        Regulation U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31
         3.6.        Taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31
         3.7.        Subsidiaries; Restricted Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31
</TABLE>




                                      ii
<PAGE>   3


<TABLE>
<S>                  <C>                                                                                               <C>
ARTICLE IV           Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         4.1.        Initial Loan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
         4.2.        All Loans  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  34

ARTICLE V            Affirmative Covenants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
         5.1.        Financial Reporting and Notices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
         5.2.        Compliance with Laws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         5.3.        Maintenance of Properties  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         5.4.        Insurance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         5.5.        Books and Records  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         5.6.        Minimum Book Value for Assets of Parent and Its Restricted
                      Subsidiaries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         5.7.        Use of Proceeds  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         5.8.        Borrowing Request  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37

ARTICLE VI           Financial Covenants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         6.1.        Minimum Tangible Net Worth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         6.2.        Ratio of Total Debt to Capital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38

ARTICLE VII          Negative Covenants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         7.1.        Liens  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         7.2.        Mergers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         7.3.        Asset Dispositions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
         7.4.        Transactions with Affiliates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
         7.5.        Restrictive Agreements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
         7.6.        Guaranties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40

ARTICLE VIII         Events of Default  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
         8.1.        Listing of Events of Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
         8.2.        Action if Administration, Winding Up, Arrangements and Insolvency  . . . . . . . . . . . . . . .  43
         8.3.        Action if Other Event of Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43

ARTICLE IX           Agents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43

ARTICLE X            Miscellaneous  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         10.1.       Notices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         10.2.       Waivers; Amendments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48
         10.3.       Expenses; Indemnity; Damage Waiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
         10.4.       Successors and Transferees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         10.5.       Survival . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53
</TABLE>





                                      iii
<PAGE>   4


<TABLE>
         <S>         <C>                                                                                               <C>
         10.6.       Counterparts; Integration; Effectiveness . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53
         10.7.       Severability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53
         10.8.       Right of Setoff  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         10.9.       GOVERNING LAW; JURISDICTION; CONSENT TO SERVICE OF PROCESS . . . . . . . . . . . . . . . . . . .  54
         10.10.      Headings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
         10.11.      Confidentiality  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
         10.12.      Interest Rate Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
         10.13.      NO ORAL AGREEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
</TABLE>





                                       iv
<PAGE>   5


                             SCHEDULES AND EXHIBITS

<TABLE>
<S>              <C>
EXHIBITS:

Exhibit A-1      Form of Legal Opinion of Parker & Parker
Exhibit A-2      Form of Legal Opinion of Chamberlain, Hrdlicka, White, Williams & Martin
Exhibit B        Form of Legal Opinion of Allen Allen & Hemsley
Exhibit C        Form of Compliance Certificate
Exhibit D        Form of Substitution Certificate
Exhibit E        Form of Borrowing/Interest Election Request
Exhibit F        Form of Guaranty


SCHEDULES:

Schedule 2.1     Commitments
Schedule 3.7     Subsidiaries; Restricted Subsidiaries
Schedule 7.1     Liens
</TABLE>





                                       v
<PAGE>   6


                                CREDIT AGREEMENT

         THIS CREDIT AGREEMENT, dated as of June 12, 1997, 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, "Borrower"), the LENDERS (as defined
below) party hereto, MORGAN GUARANTY TRUST COMPANY, as Global Documentation
Agent, BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION, SYDNEY BRANCH
(ARBN 064 874 531), as Australian Documentation Agent, THE CHASE MANHATTAN BANK
(ARBN 074 112 011), as Australian Syndication Agent, CITISECURITIES LIMITED
(ACN 008 489 610), as Australian Administrative Agent, and THE CHASE MANHATTAN
BANK, as Global Administrative Agent.

         The parties hereto agree as follows:

                                   ARTICLE I

                                  Definitions

         SECTION 1.1.         Defined Terms.  As used in this Agreement, the
following terms have the meanings specified below:

         "Accepting Lenders" is defined in Section 2.6(c).

         "Administrative Questionnaire" means an Administrative Questionnaire
in a form supplied by the Global Administrative Agent.

         "Affiliate" means, with respect to a specified Person, another Person
that directly, or indirectly through one or more intermediaries, Controls or is
Controlled by or is under common Control with the Person specified.

         "Agents" means each of the Global Administrative Agent, the Global
Documentation Agent, the Australian Administrative Agent, the Australian
Syndication Agent and the Australian Documentation Agent.

         "Agreed Currency" is defined in Section 2.19(a).

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





<PAGE>   7



         "Annual Certificate of Extension" means a certificate of Parent and
Borrower, executed by an Authorized Officer and delivered to the Global
Administrative Agent and the Australian Administrative Agent, in a form
acceptable to the Global Administrative Agent and the Australian Administrative
Agent, which requests an extension of the then scheduled Maturity Date pursuant
to Section 2.6.

         "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.

         "Applicable Percentage" means, with respect to any Lender, the
percentage of the total Commitments represented by such Lender's Commitment.
If the Commitments have terminated or expired, the Applicable Percentages shall
be determined based upon the Commitments most recently in effect, giving effect
to any assignments.

         "Applicable Rate" means, for any day, with respect to any Loan, or
with respect to the Facility Fees payable hereunder, as the case may be, the
applicable rate per annum set forth below under the caption "Eurodollar Margin"
or "Facility Fee", as the case may be, based upon the ratings by Moody's, S&P
and D&P, respectively, applicable on such date to the Index Debt:

<TABLE>
<CAPTION>                                                                                                    
=============================================================================================================
                                                       Facility Fee (in basis     Eurodollar Margin (in basis
                 Index Debt Ratings:                           points)                      points)
- -------------------------------------------------------------------------------------------------------------
 <S>              <C>                                           <C>                          <C>
 Category 1:      A/A2                                          6.00                         16.50
- -------------------------------------------------------------------------------------------------------------

 Category 2:      A-/A3                                         8.00                         17.00
- -------------------------------------------------------------------------------------------------------------

 Category 3:      BBB+/Baa1                                     9.00                         18.50
- -------------------------------------------------------------------------------------------------------------

 Category 4:      BBB/Baa2                                      12.00                        20.50
- -------------------------------------------------------------------------------------------------------------

 Category 5:      BBB-/Baa3                                     17.50                        25.00
- -------------------------------------------------------------------------------------------------------------

 Category 6:      Less than BBB-/Baa3                           25.00                        50.00
=============================================================================================================

</TABLE>


         For purposes of the foregoing, (i) if either Moody's, S&P or D&P shall
not have in effect a rating for the Index Debt (other than by reason of the
circumstances referred to in the last sentence of this definition), then such
rating agency shall be deemed to have established a rating





                                       2
<PAGE>   8



in Category 6; (ii) if the ratings established or deemed to have been
established by Moody's, S&P and D&P for the Index Debt shall fall within
different Categories, the Applicable Rate shall be based on the highest two
ratings, unless the highest two ratings shall fall within different Categories
in which case the Applicable Rate shall be based on the lower of the highest
two ratings; and (iii) if the ratings established or deemed to have been
established by Moody's, S&P and D&P for the Index Debt shall be changed (other
than as a result of a change in the rating system of Moody's, S&P or D&P), such
change shall be effective as of the date on which it is first announced by the
applicable rating agency.  Each change in the Applicable Rate shall apply
during the period commencing on the effective date of such change and ending on
the date immediately preceding the effective date of the next such change.  If
the rating system of Moody's, S&P or D&P shall change, or if any such rating
agency shall cease to be in the business of rating corporate debt obligations,
Parent, Borrower and the Lenders shall negotiate in good faith to amend this
definition to reflect such changed rating system or the unavailability of
ratings from such rating agency and, pending the effectiveness of any such
amendment, the Applicable Rate shall be determined by reference to the rating
most recently in effect prior to such change or cessation.

         "Australian Administrative Agent" means Citisecurities Limited (ACN
008 489 610) in its capacity as Australian administrative agent for the lenders
party to the Australian Credit Agreement and any successor thereto.

         "Australian Documentation Agent" means Bank of America National Trust
and Savings Association, Sydney Branch (ARBN 064 874 531), in its capacity as
Australian Documentation Agent for the Lenders hereunder.

         "Australian Syndication Agent" means The Chase Manhattan Bank (ARBN
074 112 011), in its capacity as Australian Syndication Agent for the Lenders
hereunder.

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

         "Availability Period" means the period from and including the Global
Effective Date to but excluding the earlier of the Maturity Date and the date
of termination of the Commitments.

         "Borrower" means Apache Energy Limited and Apache Oil Australia.





                                       3
<PAGE>   9


         "Borrowing" means Loans made or continued on the same date and as to
which a single Interest Period is in effect.

         "Borrowing Request" means a request by Borrower for a Borrowing in
accordance with Section 2.3, in substantially the form of Exhibit E or any
other form approved by the Australian Administrative Agent and the Global
Administrative Agent.

         "Business Day" means a weekday on which (a) (for the purpose of
determining the LIBO Rate under the second sentence of the definition of "LIBO
Rate") 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 Canadian Administrative Agent for the lenders party to the Canadian Credit
Agreement and any successor thereto.

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

         "Canadian Credit Agreement" means that certain Credit Agreement of
even date herewith among the Canadian Borrower, the Canadian Lenders, the
Global Administrative Agent, the Global Documentation Agent, the Canadian
Administrative Agent, the Canadian Documentation Agent and the Canadian
Syndication Agent, 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, and the agreement with
respect to fees, 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.

         "Capital" means the consolidated shareholder's equity of Parent and
its Subsidiaries plus the consolidated Debt of Parent and its Subsidiaries.

         "CERCLA" means the Comprehensive Environmental Response, Compensation
and Liability Act of 1980, 42 U.S.C.  Section 9601, et. seq., as amended from
time to time.





                                       4
<PAGE>   10


         "Change in Law" means (a) the adoption of any law, rule or regulation
after the date of this Agreement, (b) any change in any law, rule or regulation
or in the interpretation or application thereof by any Governmental Authority
after the date of this Agreement or (c) compliance by any Lender (or, for
purposes of Section 2.16(b), by any lending office of such Lender or by such
Lender's holding company, if any) with any request, guideline or directive
(whether or not having the force of law) of any Governmental Authority made or
issued after the date of this Agreement.

         "Combined Commitments" means, with respect to each Combined Lender,
the commitment of such Combined Lender to make Loans (or in the case of U.S.
Lenders, "Revolving Loans" (as defined in the U.S. Credit Agreement)),
expressed as an amount representing the maximum aggregate amount of such
Combined Lender's Credit Exposure (or in the case of the U.S Lender's,
"Revolving Credit Exposure" (as defined in the U.S. Credit Agreement)) under
the Combined Credit Agreements, as such commitment may be reduced, increased or
terminated from time to time pursuant to the Global Loan Documents.  The
initial amount of each Combined Lender's Commitment is set forth on Schedule
2.1 to the applicable Combined Credit Agreement, or in a Substitution
Certificate or in a Assignment and Acceptance (as defined in the Canadian
Credit Agreement and the U.S. Credit Agreement) pursuant to which such Combined
Lender shall have assumed its Combined Commitment, as applicable.  The initial
aggregate amount of the Combined Lenders' Combined Commitments is
$1,000,000,000.

         "Combined Credit Agreements" means this Agreement, the Canadian Credit
Agreement and the U.S. Credit Agreement.

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

         "Combined Loan Documents" means the Loan Documents, the Canadian Loan
Documents and the U.S. Loan Documents.

         "Combined Loans" means the loans made by the Combined Lenders to
Borrower, Parent and Canadian Borrower pursuant to the Combined Loan Documents.

         "Combined Required Lenders" means Combined Lenders having in the
aggregate 51% of the aggregate total Combined Commitments under the Combined
Loan Documents, or, if the Combined Commitments have been terminated, Combined
Lenders holding 51% of the aggregate unpaid principal amount of the outstanding
Combined Loans under the Combined Loan Documents.

         "Commitment" means, with respect to each Lender, the commitment of
such Lender to make Loans, expressed as an amount representing the maximum
aggregate amount of such Lender's Credit Exposure hereunder, as such commitment
may be (a) reduced from time to time





                                       5
<PAGE>   11


pursuant to Section 2.8, (b) reduced or increased from time to time pursuant to
assignments by or to such Lender pursuant to Section 10.4 and (c) terminated
pursuant to Sections 8.2 or 8.3.  The initial amount of each Lender's
Commitment is set forth on Schedule 2.1, or in the Substitution Certificate
pursuant to which such Lender shall have assumed its Commitment, as applicable.
The initial aggregate amount of the Lenders' Commitments is $175,000,000.

         "Consolidated Tangible Net Worth" means (i) the consolidated
shareholder's equity of Parent and its Subsidiaries (determined in accordance
with GAAP), less (ii) the amount of consolidated intangible assets of Parent
and its Subsidiaries, plus (iii) the aggregate amount of any non-cash write
downs, on a consolidated basis, by Parent and its Subsidiaries during the term
hereof.

         "Control" means the possession, directly or indirectly, of the power
to direct or cause the direction of the management or policies of a Person,
whether through the ability to exercise voting power, by contract or otherwise.
"Controlling" and "Controlled" have meanings correlative thereto.

         "Credit Exposure" means, with respect to any Lender at any time, the
sum of the outstanding principal amount of such Lender's Loans at such time.

         "Debt" of any Person means indebtedness, including capital leases,
shown as debt on a consolidated balance sheet of such Person prepared in
accordance with GAAP.

         "Declining Lenders" is defined in Section 2.6(c).

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

         "dollars" or "$" refers to lawful money of the United States of
America.

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

         "Environmental Laws" means all applicable federal, state, provincial,
territorial or local statutes, laws, ordinances, codes, rules and regulations
(including consent decrees and administrative orders) relating to public health
and safety, protection of the environment and planning (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





                                       6
<PAGE>   12


Act 1970 (NSW), Environmental Planning & Assessment Act 1979 (NSW) and the
Environmental Protection (Impact of Proposals) Act of 1974 Commonwealth of
Australia).

         "Environmental Liability" means any liability, contingent or otherwise
(including any liability for damages, costs of environmental remediation,
fines, penalties or indemnities), of Borrower or any Subsidiary directly or
indirectly resulting from or based upon (a) violation of any Environmental Law,
(b) the generation, use, handling, transportation, storage, treatment or
disposal of any Hazardous Materials, (c) exposure to any Hazardous Materials,
(d) the release or threatened release of any Hazardous Materials into the
environment or (e) any contract, agreement or other consensual arrangement
pursuant to which liability is assumed or imposed with respect to any of the
foregoing.

         "Event of Default" has the meaning assigned to such term in Article
VIII.

         "Excluded Taxes" means, with respect to any Agent, any Lender or any
other recipient of any payment to be made by or on account of any obligation of
Borrower hereunder, (a) income or franchise taxes imposed on (or measured by)
its net income by Australia, or by the jurisdiction under the laws of which
such recipient is organized or in which its principal office is located or, in
the case of any Lender, in which its applicable lending office is located, (b)
any branch profits taxes imposed by Australia or any similar tax imposed by any
other jurisdiction in which Borrower is located and (c) in the case of a
Foreign Lender (other than an assignee pursuant to a request by Borrower under
Section 2.18(b)), any withholding tax that is imposed on amounts payable to
such Foreign Lender at the time such Foreign Lender becomes a party to this
Agreement (or designates a new lending office) or is attributable to such
Foreign Lender's failure to comply with Section 2.16(e), except to the extent
that such Foreign Lender (or its assignor, if any) was entitled, at the time of
designation of a new lending office (or assignment), to receive additional
amounts from Borrower with respect to such withholding tax pursuant to Section
2.16(a).

         "Existing Global Credit Facilities" means (i) that certain Fourth
Amended and Restated Credit Agreement, dated as October 31, 1996, among Parent,
the lenders party thereto, 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,
(ii) that certain Credit Agreement, dated as October 31, 1996, among the
Borrower, the lenders party thereto, The First National Bank of Chicago, as
global administrative agent, Chase Securities Australia Limited (ACN 002 888
011), as Australian administrative agent, First Chicago Capital Markets, Inc.,
as arranger, and Chase Securities Inc., as arranger, and (iii) that certain
Credit Agreement, dated as October 31, 1996, among the Canadian Borrower, the
lenders party thereto, The First National Bank of Chicago, as global
administrative agent, Bank of Montreal, as Canadian administrative agent, First
Chicago Capital Markets, Inc., as arranger, and Chase Securities Inc., as
arranger.





                                       7
<PAGE>   13


         "Facility Fee" is defined in Section 2.11.

         "Foreign Lender" means any Lender that is not a resident in Australia
for purposes of, the Income Tax Assessment Act 1936 (Cth).  For purposes of
this definition, Australia and each State thereof shall be deemed to constitute
a single jurisdiction.

         "GAAP" means generally accepted accounting principles as in effect
from time to time, applied on a basis consistent with the most recent financial
statements of Parent, Borrower and their Subsidiaries delivered to the Lenders
pursuant hereto.

         "Global Administrative Agent" means The Chase Manhattan Bank, in its
capacity as global administrative agent for the Combined Lenders.

         "Global Documentation Agent" means Morgan Guaranty Trust Company, in
its capacity as global documentation agent for the Lenders hereunder.

         "Global Effective Date" means a date agreed upon by Parent, Borrower,
the Australian Administrative Agent and the Global Administrative Agent as the
date on which the conditions specified in Section 4.1 of each Combined Credit
Agreement are satisfied (or waived in accordance with Section 10.2 of each
Combined Credit Agreement).

         "Global Effectiveness Notice" means a notice and certificate of Parent
and Borrower properly executed by an Authorized Officer of Parent and Borrower,
respectively, addressed to the Combined Lenders and delivered to the Global
Administrative Agent and the Australian Administrative Agent, in sufficient
number of counterparts to provide one for each such lender and each agent under
each Combined Credit Agreement, whereby Parent certifies satisfaction of all
the conditions precedent to the effectiveness under Section 4.1 of each
Combined Credit Agreement.

         "Governmental Authority" means the government of Australia, any other
nation or any political subdivision thereof, whether state, provincial,
territorial or local, and any agency, authority, instrumentality, regulatory
body, court, central bank or other entity exercising executive, legislative,
judicial, taxing, regulatory or administrative powers or functions of or
pertaining to government.

         "Guaranty" means that certain Deed of Guaranty, dated as of June 12,
1997, by Parent in favor of the Lenders and the other Lender Parties (as
defined therein), in substantially the form of Exhibit F or any other form
approved by the Global Administrative Agent and the Australian Administrative
Agent, as such Guaranty may from time to time be amended, supplemented,
restated, reaffirmed or otherwise modified.





                                       8
<PAGE>   14


         "Hazardous Material" means (a) any "hazardous substance," as defined
by CERCLA; (b) any "hazardous waste," as defined by the Resource Conservation
and Recovery Act; or (c) any pollutant or contaminant or hazardous, dangerous
or toxic chemical, material or substance within the meaning of any other
Environmental Law.

         "Indebtedness" of any Person means all (i) Debt, and (ii) guaranties
or other contingent obligations in respect of the Debt of any other Person.

         "Indemnified Taxes" means Taxes other than Excluded Taxes.

         "Index Debt" means senior, unsecured, non-credit enhanced, long-term
indebtedness for borrowed money of Parent that is not guaranteed by any other
Person or subject to any other credit enhancement.

         "Interest Election Request" means a request by Borrower to convert or
continue a Borrowing in accordance with Section 2.7, in substantially the form
of Exhibit E or any other form approved by the Global Administrative Agent and
the Australian Administrative Agent.

         "Interest Payment Date" means, with respect to any Loan, the last day
of the Interest Period applicable to the Borrowing of which such Loan is a part
and, in the case of a Borrowing with an Interest Period of more than three (3)
months' duration, each day prior to the last day of such Interest Period that
occurs at intervals of three (3) months' duration after the first day of such
Interest Period.

         "Interest Period" means the period commencing on the date of any
Borrowing and ending on the numerically corresponding day, or, with the consent
of the Australian Administrative Agent, such other day,  in the calendar month
that is one, two, three or six months (or, with the consent of each Lender,
nine or twelve months) thereafter, as Borrower may elect, provided, that (i) if
any Interest Period would end on a day other than a Business Day, such Interest
Period shall be extended to the next succeeding Business Day unless such next
succeeding Business Day would fall in the next calendar month, in which case
such Interest Period shall end on the next preceding Business Day and (ii) any
Interest Period that commences on the last Business Day of a calendar month (or
on a day for which there is no numerically corresponding day in the last
calendar month of such Interest Period) shall end on the last Business Day of
the last calendar month of such Interest Period.  For purposes hereof, the date
of a Borrowing initially shall be the date on which such Borrowing is made and
thereafter shall be the effective date of the most recent conversion or
continuation of such Borrowing.

         "Judgment Currency" is defined in Section 2.19(b).





                                       9
<PAGE>   15


         "Lenders" means the Persons listed on Schedule 2.1 and any other
Person that shall have become a party hereto pursuant to Section 10.4
(including any commercial lending institution becoming a party hereto pursuant
to a Substitution Certificate) or otherwise by operation of law, other than any
such Person that ceases to be a party hereto pursuant to a Substitution
Certificate.

         "LIBO Rate" means, with respect to any Borrowing for any Interest
Period, the rate appearing on Page 3750 of the Telerate Service (or on any
successor or substitute page of such Service, or any successor to or substitute
for such Service, providing rate quotations comparable to those currently
provided on such page of such Service, as reasonably determined by the Global
Administrative Agent, the Australian Administrative Agent and the Borrower from
time to time for purposes of providing quotations of interest rates applicable
to dollar deposits in the London interbank market) at approximately 11:00 a.m.,
London time, two Business Days prior to the commencement of such Interest
Period, as the rate for dollar deposits with a maturity comparable to such
Interest Period.  In the event that such rate is not available at such time for
any reason, then the "LIBO Rate" with respect to such Borrowing for such
Interest Period shall be the rate (rounded upwards, if necessary, to the next
1/16 of 1%) at which dollar deposits of $5,000,000 and for a maturity
comparable to such Interest Period are offered by the principal London office
of the Global Administrative Agent in immediately available funds in the London
interbank market at approximately 11:00 a.m., London time, two Business Days
prior to the commencement of such Interest Period.

         "Lien" means any mortgage, pledge, lien, encumbrance, charge, or
security interest of any kind, granted or created to secure Indebtedness;
provided, however, that, with respect to any prohibitions of Liens on Property,
the following transactions shall not be deemed to create a Lien to secure
Indebtedness; (i) production payments (as such term is used in the United
States) and (ii) liens required by statute and created in favor of Australian
governmental entities to secure partial, progress, advance, or other payments
intended to be used primarily in connection with air or water pollution
control.

         "Loan Document" means this Agreement, the Guaranty, any Borrowing
Request, any Interest Election Request, any Annual Certificate of Extension,
any Substitution Certificate, any election notice, the agreement with respect
to fees described in Section 2.11(b) and each other agreement, document or
instrument delivered by Borrower or any other Person in connection with this
Agreement, as such may be amended from time to time.

         "Loans" means the loans made by the Lenders to Borrower pursuant to
this Agreement which bear interest at a rate determined by reference to the
LIBO Rate.

         "Material Adverse Effect" means, as to any matter, that such matter
could reasonably be expected to materially and adversely affect the assets,
business, properties, condition (financial or otherwise) of Parent and its
Subsidiaries taken as a whole.  No matter shall be considered to





                                       10
<PAGE>   16


result, or be expected to result, in a Material Adverse Effect unless such
matter causes Parent and its Subsidiaries, on a consolidated basis, to suffer a
loss or incur a cost equal to at least ten percent (10%) of Parent's
Consolidated Tangible Net Worth.

         "Maturity Date" means the Original Maturity Date, or such other later
date as may result from any extension requested by Borrower and Parent and
consented to by the Lenders pursuant to Section 2.6.

         "Moody's" means Moody's Investors Service, Inc.

         "Obligations" means, at any time, the sum of (i) the outstanding
principal amount of any Loans plus (ii) all accrued and unpaid interest and
Facility Fees plus (iii) all other obligations of Borrower or any Subsidiary to
any Lender or any Agent, whether or not contingent, arising under or in
connection with any of the Loan Documents.

         "Original Maturity Date" means June 12, 2002.

         "Other Currency" is defined in Section 2.19(a).

         "Other Taxes" means any and all present or future stamp or documentary
taxes or any other excise or property taxes, charges or similar levies arising
from any payment made hereunder or from the execution, delivery or enforcement
of, or otherwise with respect to, this Agreement.

         "Parent" means Apache Corporation, a corporation organized under the
laws of the State of Delaware.

         "Person" means any natural person, corporation, limited liability
company, joint venture, partnership, firm, association, trust, government,
governmental agency or any other entity, whether acting in an individual,
fiduciary or other capacity.

         "Property" means (i) any property owned or leased by Borrower or any
Subsidiary, or any interest of Borrower or any Subsidiary in property, which is
considered by Borrower to be capable of producing oil, gas, or minerals in
commercial quantities, (ii) any interest of Borrower or any Subsidiary in, any
refinery, processing or manufacturing plant owned or leased by Borrower or any
manufacturing plant owned or leased by Borrower or any Subsidiary, (iii) any
interest of Borrower or any Subsidiary in, all present and future oil, gas,
other liquid and gaseous hydrocarbons, and other minerals now or hereafter
produced from any other Property or to which Borrower or any Subsidiary may be
entitled as a result of its ownership of any Property, and (iv) all real and
personal assets owned or leased by Borrower or any Subsidiary used in the
drilling, gathering, processing, transportation, or marketing of any oil, gas,
and other hydrocarbons or minerals, except (a) any such real or personal assets
related thereto employed in





                                       11
<PAGE>   17


transportation, distribution or marketing or (b) any interest of Borrower or
any Subsidiary in, any refinery, processing or manufacturing plant, or portion
thereof, which property described in clauses (a) or (b), in the opinion of the
Board of Directors of Borrower, is not a principal plant or principal facility
in relation to the activities of Borrower and its Subsidiaries taken as a
whole.

         "Register" has the meaning set forth in Section 10.4.

         "Regulation U" means any of Regulations G, T, U or X of the Board of
Governors of the Federal Reserve System of the United States of America from
time to time in effect and shall include any successor or other regulations or
official interpretations of said Board 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.

         "Related Parties" means, with respect to any specified Person, such
Person's Affiliates and the respective directors, officers, employees, agents
and advisors of such Person and such Person's Affiliates.

         "Replacement Lenders" is defined in Section 2.6(c)(ii).

         "Required Lenders" means Lenders having in the aggregate 51% of the
aggregate total Commitments, or, if the Commitments have been terminated,
Lenders holding 51% of the aggregate unpaid principal amount of the outstanding
Obligations.

         "Resource Conservation and Recovery Act" means the Resource
Conservation and Recovery Act, 42 U.S.C. Section 690, et seq., as amended from
time to time.

         "Restricted Subsidiary" means any Subsidiary of Borrower or Parent
that owns any asset representing or consisting of an entitlement to production
from, or other interest in, reserves of oil, gas or other minerals in place
located in the United States, Canada or Australia or is otherwise designated by
Parent in writing to the Global Administrative Agent.

         "S&P" means Standard & Poor's and any successor thereto that is a
nationally-recognized rating agency.

         "subsidiary" means, with respect to any Person, any corporation or
other similar entity of which more than 50% of the outstanding capital stock
(or other equity) having ordinary voting power to elect a majority of the Board
of Directors of such corporation or entity (irrespective of whether or not at
the time capital stock or any other class or classes of such corporation or
entity shall or might have voting power upon the occurrence of any contingency)
is at the time directly or indirectly owned by such Person.





                                       12
<PAGE>   18


         "Subsidiary" means any subsidiary of Borrower or Parent.

         "Substitution Certificate" means a substitution certificate entered
into by a Lender and a transferee (with the consent of any party whose consent
is required by Section 10.4), and accepted by the Australian Administrative
Agent, in substantially the form of Exhibit D or any other form approved by the
Australian Administrative Agent.

         "Taxes" means any and all present or future taxes, levies, imposts,
duties, deductions, charges or withholdings imposed by any Governmental
Authority.

         "Transactions" means the execution, delivery and performance by
Borrower of this Agreement and the other Loan Documents, the borrowing of Loans
and the use of the proceeds thereof.

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

         "Unrestricted Subsidiary" means any Subsidiary of Borrower that is not
a Restricted Subsidiary.

         "U.S. Credit Agreement" means that certain Credit Agreement of even
date herewith among the Parent, the U.S.  Lenders, the Global Administrative
Agent, the Global Documentation Agent, the U.S. Documentation Agent, the U.S.
Syndication Agent, NationsBank of Texas, N.A., as Co-agent, and Union Bank of
Switzerland, Houston Agency, as Co-agent, as it may be amended, supplemented,
restated or otherwise modified and in effect from time to time.

         "U.S. Documentation Agent" means The First National Bank of Chicago,
in its capacity as U.S. documentation agent for the Lenders hereunder.

         "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
assignment agreements, and the agreement with respect to fees, 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. Syndication Agent" means Morgan Guaranty Trust Company, in its
capacity as U.S. syndication agent for the Lenders hereunder.





                                       13
<PAGE>   19


         SECTION 1.2.         [Intentionally omitted].

         SECTION 1.3.         Terms Generally.  The definitions of terms herein
shall apply equally to the singular and plural forms of the terms defined.
Whenever the context may require, any pronoun shall include the corresponding
masculine, feminine and neuter forms.  The words "include", "includes" and
"including" shall be deemed to be followed by the phrase "without limitation".
The word "will" shall be construed to have the same meaning and effect as the
word "shall".  Unless the context requires otherwise (a) any definition of or
reference to any agreement, instrument or other document herein shall be
construed as referring to such agreement, instrument or other document as from
time to time amended, supplemented or otherwise modified (subject to any
restrictions on such amendments, supplements or modifications set forth
herein), (b) any reference herein to any Person shall be construed to include
such Person's successors and assigns, (c) the words "herein", "hereof" and
"hereunder", and words of similar import, shall be construed to refer to this
Agreement in its entirety and not to any particular provision hereof, (d) all
references herein to Articles, Sections, Exhibits and Schedules shall be
construed to refer to Articles and Sections of, and Exhibits and Schedules to,
this Agreement and (e) the words "asset" and "property" shall be construed to
have the same meaning and effect and to refer to any and all tangible and
intangible assets and properties, including cash, securities, accounts and
contract rights.

         SECTION 1.4.         Accounting Terms; GAAP.  Except as otherwise
expressly provided herein, all terms of an accounting or financial nature shall
be construed in accordance with GAAP, as in effect from time to time; provided
that, if Borrower notifies the Australian Administrative Agent and the Global
Administrative Agent that Borrower requests an amendment to any provision
hereof to eliminate the effect of any change occurring after the date hereof in
GAAP or in the application thereof on the operation of such provision (or if
the Australian Administrative Agent and the Global Administrative Agent notify
Borrower that the Required Lenders request an amendment to any provision hereof
for such purpose), regardless of whether any such notice is given before or
after such change in GAAP or in the application thereof, then such provision
shall be interpreted on the basis of GAAP as in effect and applied immediately
before such change shall have become effective until  such notice shall have
been withdrawn or such provision amended in accordance herewith.

                                   ARTICLE II

                                  The Credits

         SECTION 2.1.         Commitments.  Subject to the terms and conditions
set forth herein, each Lender agrees to make Loans in U.S. Dollars to Borrower
from time to time during the Availability Period in an aggregate principal
amount that will not result in (a) such Lender's Credit Exposure exceeding such
Lender's Commitment or (b) the Credit Exposures exceeding the





                                       14
<PAGE>   20


total Commitments.  Within the foregoing limits and subject to the terms and
conditions set forth herein, Borrower may borrow, prepay and reborrow Loans.
Apache Energy Limited and Apache Oil Australia shall be jointly and severally
liable for all Obligations under this Agreement and the other Loan Documents.

         SECTION 2.2.         Loans and Borrowings.

         (a)     Each Loan shall be made as part of a Borrowing consisting of
Loans made by the Lenders ratably in accordance with their respective
Commitments.  The failure of any Lender to make any Loan required to be made by
it shall not relieve any other Lender of its obligations hereunder; provided
that the Commitments of the Lenders are several and no Lender shall be
responsible for any other Lender's failure to make Loans as required.

         (b)     Subject to Section 2.13, each Borrowing shall be comprised
entirely of Loans as Borrower may request in accordance herewith.  Each Lender
at its option may make any Loan by causing any domestic or foreign branch or
Affiliate of such Lender to make such Loan; provided that any exercise of such
option shall not affect the obligation of Borrower to repay such Loan in
accordance with the terms of this Agreement.

         (c)     At the commencement of each Interest Period for any Borrowing,
such Borrowing shall be in an aggregate amount that is an integral multiple of
$1,000,000 and not less than $5,000,000 (including any continuation of existing
Loans made in connection therewith); provided that a Borrowing may be in an
aggregate amount that is equal to the entire unused balance of the total
Commitments.  There shall not at any time be more than a total of ten (10)
Borrowings outstanding.

         (d)     Notwithstanding any other provision of this Agreement,
Borrower shall not be entitled to request, or to elect to convert or continue,
any Borrowing if the Interest Period requested with respect thereto would end
after the Maturity Date.

         SECTION 2.3.         Requests for Borrowings.   To request a
Borrowing, Borrower shall notify the Australian Administrative Agent of such
request by telephone not later than 1:00 p.m., New York time, three Business
Days before the date of the proposed Borrowing.  Each such telephonic Borrowing
Request shall be irrevocable and shall be confirmed promptly by hand delivery
or telecopy to the Australian Administrative Agent of a written Borrowing
Request in a form approved by the Australian Administrative Agent and signed by
Borrower.  Each such telephonic and written Borrowing Request shall specify the
following information in compliance with Section 2.2:

                 (i)          the aggregate amount of the requested Borrowing;





                                       15
<PAGE>   21


                 (ii)         the date of such Borrowing, which shall be a
         Business Day;

                 (iii)        the initial Interest Period to be applicable
         thereto, which shall be a period contemplated by the definition of the
         term "Interest Period"; and

                 (iv)         an account or accounts in New South Wales,
         Australia, Australian Capital Territory, Australia or outside of
         Australia for payment of the Borrowing previously designated to the
         Australian Administrative Agent by a written notice executed by two
         Authorized Officers of Apache Energy Limited and two Authorized
         Officers of Apache Oil Australia.

If no Interest Period is specified with respect to any requested Borrowing,
then Borrower shall be deemed to have selected an Interest Period of one
month's duration.  Promptly following receipt of a Borrowing Request in
accordance with this Section, the Australian Administrative Agent shall advise
each Lender of the details thereof and of the amount of such Lender's Loan to
be made as part of the requested Borrowing.

         SECTION 2.4.         [Intentionally omitted].

         SECTION 2.5.         Funding of Borrowings.

         (a)     Each Lender shall make each Loan to be made by it hereunder on
the proposed date thereof by wire transfer of immediately available funds by
12:00 noon, New York time, to the account of the Australian Administrative
Agent most recently designated by it for such purpose by notice to the Lenders.
The Australian Administrative Agent will make such Loans available to Borrower
by promptly crediting the amounts so received, in like funds, to an account of
Borrower maintained in New South Wales, Australia, Australian Capital
Territory, Australia or outside of Australia and designated by Borrower from
time to time in a written notice to the Australian Administrative Agent
executed by two Authorized Officers of Apache Energy Limited and two Authorized
Officers of Apache Oil Australia.

         (b)     Unless the Australian Administrative Agent shall have received
notice from a Lender prior to the proposed date of any Borrowing that such
Lender will not make available to the Australian Administrative Agent such
Lender's share of such Borrowing, the Australian Administrative Agent may
assume that such Lender has made such share available on such date in
accordance with paragraph (a) of this Section and may, in reliance upon such
assumption,  but is under no obligation to, make available to Borrower a
corresponding amount.  In such event, if a Lender has not in fact made its
share of the applicable Borrowing available to the Australian Administrative
Agent, then the applicable Lender and Borrower severally agree to pay to the
Australian Administrative Agent forthwith on demand such corresponding amount
with interest thereon, for each day from and including the date such amount is
made available to Borrower to





                                       16
<PAGE>   22


but excluding the date of payment to the Australian Administrative Agent, at
(i) in the case of such Lender, at a rate reasonably determined by the
Australian Administrative Agent in accordance with banking industry rules on
interbank compensation or (ii) in the case of Borrower, the interest rate
applicable to Loans made in such Borrowing.  If such Lender pays such amount to
the Australian Administrative Agent, then such amount shall constitute such
Lender's Loan included in such Borrowing.

         SECTION 2.6.         Extension of Maturity Date and of Commitments.

         (a)     Subject to the other provisions of this Agreement and provided
that no Event of Default has occurred and is continuing, the total Commitments
shall be effective for an initial period from the Global Effective Date to the
Original Maturity Date; provided that the Maturity Date, and concomitantly the
total Commitments, may be extended for successive one year periods expiring on
the date which is one (1) year from the then scheduled Maturity Date.  If
Parent and Borrower shall request in an Annual Certificate of Extension
delivered to the Australian Administrative Agent and the Global Administrative
Agent at least 45 days prior to the date which is four years prior to the
Maturity Date that the Maturity Date be extended for one year from the then
scheduled Maturity Date, then the Australian Administrative Agent shall
promptly notify each Lender of such request and each Lender shall notify the
Australian Administrative Agent, no later than 30 days prior to the date which
is four years prior to the Maturity Date, whether such Lender, in the exercise
of its sole discretion, will extend the Maturity Date for such one year period.
Any Lender which shall not timely notify the Australian Administrative Agent
whether it will extend the Maturity Date shall be deemed to not have agreed to
extend the Maturity Date.  No Lender shall have any obligation whatsoever to
agree to extend the Maturity Date.  Any agreement to extend the Maturity Date
by any Lender shall be irrevocable, except as provided in Section 2.6(c).

         (b)     If all Lenders notify the Australian Administrative Agent
pursuant to clause (a) of this Section 2.6 of their agreement to extend the
Maturity Date, then the Australian Administrative Agent shall so notify the
Global Administrative Agent, each Lender and Borrower, and such extension shall
be effective without other or further action by any party hereto for such
additional one year period.

         (c)     If Lenders constituting at least the Required Lenders approve
the extension of the then scheduled Maturity Date (such Lenders agreeing to
extend the Maturity Date herein called the "Accepting Lenders") and if one or
more Lenders shall notify, or be deemed to notify, the Australian
Administrative Agent pursuant to clause (a) of this Section 2.6 that they will
not extend the then scheduled Maturity Date (such Lenders herein called the
"Declining Lenders"), then (A) the Australian Administrative Agent shall
promptly so notify Borrower and the Accepting Lenders, (B) the Accepting
Lenders shall, upon Borrower's election to extend the then scheduled Maturity
Date in accordance with clause (i) or (ii) below, extend the then scheduled
Maturity Date and (C)





                                       17
<PAGE>   23


Borrower shall, pursuant to a notice delivered to the Australian Administrative
Agent, the Accepting Lenders and the Declining Lenders, no later than the tenth
(10th) day following the date by which each Lender is required, pursuant to
Section 2.6(a), to approve or disapprove the requested extension of the total
Commitments, either:

                 (i)          elect to extend the Maturity 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 Maturity Date except for the operation
         of this Section 2.6.  On such date, (x) Borrower shall deliver a
         notice of the effectiveness of such termination to the Declining
         Lenders with a copy to the Australian Administrative Agent and (y)
         Borrower shall pay in full in immediately available funds all
         Obligations of Borrower owing to the Declining Lenders, including any
         amounts required pursuant to Section 2.15, and (z) upon the occurrence
         of the events set forth in clauses (x) and (y), the Declining Lenders
         shall each cease to be a Lender hereunder for all purposes, other than
         for purposes of Sections 2.14 through 2.17, Section 2.19 and Section
         10.3, and shall cease to have any obligations or any Commitment
         hereunder, other than to the Agents pursuant to Article IX, and the
         Australian Administrative Agent shall promptly notify the Accepting
         Lenders and Borrower of the new Commitments; or

                 (ii)         elect to extend the Maturity Date with respect to
         the Accepting Lenders and, prior to or no later than the then
         scheduled Maturity 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 (such lenders herein
         called the "Replacement Lenders") and (B) Borrower shall pay in full
         in immediately available funds all Obligations of Borrower owing to
         any 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 Declining Lender's or Declining
         Lenders' rights and obligations 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 Obligations payable to such Declining Lender
         or Declining Lenders plus any accrued but unpaid interest on such
         Obligations and accrued but unpaid fees or other amounts owing in
         respect of such Declining Lender's or Declining Lenders' Loans and
         Commitments hereunder, and (y) upon the payment of such amounts
         referred to in clause(x)and the execution of a Substitution
         Certificate by the Replacement Lender or Replacement Lenders and
         Declining Lender or Declining Lenders, the Replacement Lender or
         Replacement Lenders shall each constitute a Lender hereunder and the
         Declining Lender or Declining Lenders being so replaced shall no
         longer constitute a Lender (other than for purposes of Sections 2.14
         through 2.17, Section 2.19 and Section 10.3), and shall no longer have
         any obligations hereunder, other than to the Agents pursuant to
         Article IX; or





                                       18
<PAGE>   24


                 (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 Australian Administrative Agent and
         the Global Administrative Agent (which shall promptly notify the
         Lenders thereof) no later than the tenth (10th) day following the date
         by which each Lender is required, pursuant to Section 2.6(a), to
         approve or disapprove the requested extension of the Maturity Date,
         and concomitantly the total Commitments.

         If Borrower fails to timely provide the election notice referred to in
this clause(c), Borrower 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 Maturity Date, and the concomitant total Commitments, with
respect to the Accepting Lenders, and, on the then scheduled Maturity Date,
Borrower shall repay in full all Obligations under the Loan Documents.

         SECTION 2.7.         Interest Elections.

         (a)     Each Borrowing shall have an initial Interest Period as
specified in the applicable Borrowing Request (or one month if no Interest
Period is specified).  Thereafter, Borrower may elect to continue such
Borrowing and may elect Interest Periods therefor, all as provided in this
Section.  Borrower may, subject to the requirements of Section 2.2(c), elect
different options with respect to different portions of the affected Borrowing,
in which case each such portion shall be allocated ratably among the Lenders
holding the Loans comprising such Borrowing, and the Loans comprising each such
portion shall be considered a separate Borrowing.

         (b)     To make an election pursuant to this Section, Borrower shall
notify the Australian Administrative Agent of such election by telephone by the
time that a Borrowing Request would be required under Section 2.3 if Borrower
were requesting a Borrowing resulting from such election to be made on the
effective date of such election.  Each such telephonic Interest Election
Request shall be irrevocable and shall be confirmed promptly by hand delivery
or telecopy to the Australian Administrative Agent of a written Interest
Election Request signed by Borrower.

         (c)     Each telephonic and written Interest Election Request shall
specify the following information in compliance with Section 2.2:

                 (i)          the Borrowing to which such Interest Election
         Request applies and, if different options are being elected with
         respect to different portions thereof, the portions thereof to be
         allocated to each resulting Borrowing (in which case the information
         to be specified pursuant to clause (iii) below shall be specified for
         each resulting Borrowing);

                 (ii)         the effective date of the election made pursuant
         to such Interest Election Request, which shall be a Business Day; and





                                       19
<PAGE>   25


                 (iii)        the Interest Period to be applicable thereto
         after giving effect to such election, which shall be a period
         contemplated by the definition of the term "Interest Period".

If any such Interest Election Request requests a Borrowing but does not specify
an Interest Period, then Borrower shall be deemed to have selected an Interest
Period of one month's duration.

         (d)     Promptly following receipt of an Interest Election Request,
the Australian Administrative Agent shall advise each Lender of the details
thereof and of such Lender's portion of each resulting Borrowing.

         (e)     If Borrower fails to deliver a timely Interest Election
Request with respect to a Borrowing prior to the end of the Interest Period
applicable thereto, then, unless such Borrowing is repaid as provided herein,
at the end of such Interest Period such Borrowing shall be continued as a
Borrowing with an Interest Period of one month.  Notwithstanding any contrary
provision hereof, if an Event of Default has occurred and is continuing and the
Australian Administrative Agent, at the request of the Required Lenders, so
notifies Borrower, then, so long as an Event of Default is continuing, unless
repaid and provided the Indebtedness has not been accelerated pursuant to
Section 8.3, each Borrowing shall be continued as a Borrowing with an Interest
Period of one month at the end of the Interest Period applicable thereto.

         SECTION 2.8.         Termination and Reduction of Commitments.

         (a)     Unless previously terminated, the Commitments shall terminate
on the Maturity Date.

         (b)     Borrower may at any time terminate, or from time to time
reduce, the Commitments; provided that (i) each reduction of the Commitments
shall be in an amount that is an integral multiple of $1,000,000 and not less
than $5,000,000 and (ii) Borrower shall not terminate or reduce the Commitments
if, after giving effect to any concurrent prepayment of the Loans in accordance
with Section 2.10, the Credit Exposures would exceed the total Commitments.

         (c)     Borrower shall notify the Australian Administrative Agent of
any election to terminate or reduce the Commitments under paragraph (b) of this
Section at least two Business Days prior to the effective date of such
termination or reduction, specifying such election and the effective date
thereof.  Promptly following receipt of any notice, the Australian
Administrative Agent shall advise the Lenders of the contents thereof.  Each
notice delivered by Borrower pursuant to this Section shall be irrevocable;
provided that a notice of termination of the Commitments delivered by Borrower
may state that such notice is conditioned upon the effectiveness of other
credit facilities, in which case such notice may be revoked by Borrower (by





                                       20
<PAGE>   26


notice to the Australian Administrative Agent on or prior to the specified
effective date) if such condition is not satisfied.  Any termination or
reduction of the Commitments shall be permanent.  Each reduction of the
Commitments shall be made ratably among the Lenders in accordance with their
respective Commitments.

         SECTION 2.9.         Repayment of Loans; Evidence of Debt.

         (a)     Borrower hereby unconditionally promises to pay to the
Australian Administrative Agent for the account of each Lender the then unpaid
principal amount of each Loan on the Maturity Date.

         (b)     Each Lender shall maintain in accordance with its usual
practice an account or accounts evidencing the indebtedness of Borrower to such
Lender resulting from each Loan made by such Lender, including the amounts of
principal and interest payable and paid to such Lender from time to time
hereunder.

         (c)     The Australian Administrative Agent shall maintain accounts in
which it shall record (i) the amount of each Loan made hereunder and the
Interest Period applicable thereto, (ii) the amount of any principal or
interest due and payable or to become due and payable from Borrower to each
Lender hereunder and (iii) the amount of any sum received by the Australian
Administrative Agent hereunder for the account of the Lenders and each Lender's
share thereof.

         (d)     The entries made in the accounts maintained pursuant to
paragraph (b) or (c) of this Section shall be prima facie evidence of the
existence and amounts of the obligations recorded therein; provided that the
failure of any Lender or the Australian Administrative Agent to maintain such
accounts or any error therein shall not in any manner affect the obligation of
Borrower to repay the Loans in accordance with the terms of this Agreement.

         (e)     Any Lender may request that Loans made by it be evidenced by
one or more promissory notes.  In such event, Borrower shall prepare, execute
and deliver to such Lender promissory notes payable to the order of such Lender
(or, if requested by such Lender, to such Lender and its registered assigns and
in a form approved by the Australian Administrative Agent and the Global
Administrative Agent).  Thereafter, the Loans evidenced by such promissory
notes and interest thereon shall at all times (including after assignment
pursuant to Section 10.4) be represented by one or more promissory notes in
such form payable to the order of the payee named therein (or, if any such
promissory note is a registered note, to such payee and its registered
assigns).





                                       21
<PAGE>   27


         SECTION 2.10.        Prepayment of Loans.

         (a)     Borrower shall have the right at any time and from time to
time to prepay any Borrowing in whole or in part, subject to prior notice in
accordance with paragraph (b) of this Section.

         (b)     Borrower shall notify the Australian Administrative Agent by
telephone (confirmed by telecopy) of any prepayment hereunder not later than
1:00 p.m., New York time, three Business Days before the date of prepayment.
Each such notice shall be irrevocable and shall specify the prepayment date and
the principal amount of each Borrowing or portion thereof to be prepaid;
provided that, if a notice of prepayment is given in connection with a
conditional notice of termination of the Commitments as contemplated by Section
2.8, then such notice of prepayment may be revoked if such notice of
termination is revoked in accordance with Section 2.8.  Promptly following
receipt of any such notice, the Australian Administrative Agent shall advise
the Lenders of the contents thereof.  Each partial prepayment of any Borrowing
shall be in an amount that would be permitted in the case of an advance of a
Borrowing as provided in Section 2.2.  Each prepayment of a Borrowing shall be
applied ratably to the Loans included in the prepaid Borrowing.  Prepayments
shall be accompanied by accrued interest to the extent required by Section 2.12
and compensation for break funding, to the extent required by Section 2.15.

         SECTION 2.11.        Fees.

         (a)     Borrower agrees to pay to the Australian Administrative Agent
for the account of each Lender a facility fee (the "Facility Fee"), which shall
accrue at the Applicable Rate on the daily amount of the Commitment of such
Lender (whether used or unused) during the period from and including the Global
Effective Date to but excluding the date on which such Commitment terminates;
provided that, if such Lender continues to have any Credit Exposure after its
Commitment terminates, then such Facility Fee shall continue to accrue on the
daily amount of such Lender's Credit Exposure from and including the date on
which its Commitment terminates to but excluding the date on which such Lender
ceases to have any Credit Exposure.  Accrued Facility Fees shall be payable in
arrears on the first day of April, July and October and the second day of
January of each year and on the date on which the Commitments terminate,
commencing on the first such date to occur after the date hereof; provided that
any Facility Fees accruing after the date on which the Commitments terminate
shall be payable on demand.  All Facility Fees shall be computed on the basis
of a year of 365 days (or 366 days in a leap year) and shall be payable for the
actual number of days elapsed (including the first day but excluding the last
day).

         (b)     Borrower agrees to pay to the Australian Administrative Agent,
for its own account, fees payable in the amounts and at the times separately
agreed upon between Borrower and the Australian Administrative Agent.





                                       22
<PAGE>   28


         (c)     All fees payable hereunder shall be paid on the dates due, in
immediately available funds, to the Australian Administrative Agent for
distribution, in the case of Facility Fees, to the Lenders.  Fees paid shall
not be refundable under any circumstances.

         SECTION 2.12.        Interest.

         (a)     [Intentionally omitted].

         (b)     The Loans comprising each Borrowing shall bear interest at the
LIBO Rate for the Interest Period in effect for such Borrowing plus the
Applicable Rate.

         (c)     Notwithstanding the foregoing, if any principal of or interest
on any Loan or any fee or other amount payable by Borrower hereunder is not
paid when due, whether at stated maturity, upon acceleration or otherwise, such
overdue amount shall bear interest, after as well as before judgment, at a rate
per annum equal to (i) in the case of overdue principal of any Loan, 2% plus
the rate otherwise applicable to such Loan as provided in the preceding
paragraph of this Section or (ii) in the case of any other amount, 2% plus the
rate applicable to Borrowings with an Interest Period equal to one month as of
the date of determination.

         (d)     Accrued interest on each Loan shall be payable in arrears on
each Interest Payment Date for such Loan and upon termination of the
Commitments; provided that (i) interest accrued pursuant to paragraph (c) of
this Section shall be payable on demand, (ii) in the event of any repayment or
prepayment of any Loan, accrued interest on the principal amount repaid or
prepaid shall be payable on the date of such repayment or prepayment and (iii)
in the event of any conversion of any Loan prior to the end of the current
Interest Period therefor, accrued interest on such Loan shall be payable on the
effective date of such conversion.

         (e)     All interest hereunder shall be computed on the basis of a
year of 360 days, and shall be payable for the actual number of days elapsed
(including the first day but excluding the last day).  The applicable LIBO Rate
shall be determined by the Australian Administrative Agent, and such
determination shall be conclusive absent demonstrable error.

         SECTION 2.13.        Alternate Rate of Interest.  If prior to the
commencement of any Interest Period for a Borrowing:

                 (i)          the Australian Administrative Agent determines
         (which determination shall be conclusive absent demonstrable error)
         that adequate and reasonable means do not exist for ascertaining the
         LIBO Rate for such Interest Period; or



                                     23
<PAGE>   29
                 (ii)         the Australian Administrative Agent is advised by
         the Required Lenders that the LIBO Rate for such Interest Period will
         not adequately and fairly reflect the cost to such Lenders of making
         or maintaining their Loans included in such Borrowing for such
         Interest Period;

then the Australian Administrative Agent shall give notice thereof to Borrower
and the Lenders by telephone or telecopy as promptly as practicable thereafter
and, until the Australian Administrative Agent notifies Borrower and the
Lenders that the circumstances giving rise to such notice no longer exist, (i)
any Loans from such Lender then outstanding shall bear interest at such
Lender's cost of funds plus the Applicable Rate for the remainder of the
Interest Period applicable to such Loan and (ii) until such time as such
situation is no longer the case, any Loan made thereafter shall consist of a
Loan which bears interest at such Lender's cost of funds plus the Applicable
Margin made by such Lender(s) and Loans made by each other Lender; provided
that if the circumstances giving rise to such notice do not affect all Interest
Periods, then Borrowings with respect to the unaffected Interest Periods shall
be permitted.

         SECTION 2.14.        Increased Costs.

         (a)     If any Change in Law shall:

                 (i)          impose, modify or deem applicable any reserve,
         special deposit or similar requirement against assets of, deposits
         with or for the account of, or credit extended by, any Lender; or

                 (ii)         impose on any Lender or the London interbank
         market any other condition affecting this Agreement or Loans made by
         such Lender;

and the result of any of the foregoing shall be to increase the cost to such
Lender of making or maintaining any Loan (or of maintaining its obligation to
make any such Loan) or to reduce the amount of any sum received or receivable
by such Lender hereunder (whether of principal, interest or otherwise), then
Borrower will pay to such Lender such additional amount or amounts as will
compensate such Lender for such additional costs incurred or reduction
suffered.

         (b)     If any Lender reasonably determines that any Change in Law
regarding capital requirements has or would have the effect of reducing the
rate of return on such Lender's capital or on the capital of such Lender's
holding company, if any, as a consequence of this Agreement or the Loans made
by such Lender, to a level below that which such Lender or such Lender's
holding company could have achieved but for such Change in Law (taking into
consideration such Lender's policies and the policies of such Lender's holding
company with respect to capital adequacy), then from time to time Borrower will
pay to such Lender such additional amount or





                                       24
<PAGE>   30


amounts as will compensate such Lender or such Lender's holding company for any
such reduction suffered.

         (c)     A certificate of a Lender setting forth the amount or amounts
necessary to compensate such Lender or its holding company, as the case may be,
as specified in paragraph (a) or (b) of this Section (together with the
calculation thereof) shall be delivered to Borrower and shall be conclusive
absent demonstrable error.  Borrower shall pay such Lender the amount shown as
due on any such certificate within 10 days after receipt thereof.

         (d)     Failure or delay on the part of any Lender to demand
compensation pursuant to this Section shall not constitute a waiver of such
Lender's right to demand such compensation; provided that Borrower shall not be
required to compensate a Lender pursuant to this Section for any increased
costs or reductions incurred more than 180 days prior to the date that such
Lender notifies Borrower of the Change in Law giving rise to such increased
costs or reductions and of such Lender's intention to claim compensation
therefor; provided further that, if the Change in Law giving rise to such
increased costs or reductions is retroactive, then the 180-day period referred
to above shall be extended to include the period of retroactive effect thereof.

         SECTION 2.15.        Break Funding Payments.  In the event of (a) the
payment of any principal of any Loan other than on the last day of an Interest
Period applicable thereto (including as a result of an Event of Default), (b)
the conversion of any Loan other than on the last day of the Interest Period
applicable thereto, (c) the failure to borrow, convert, continue or prepay any
Loan on the date specified in any notice delivered pursuant hereto (regardless
of whether such notice may be revoked under Section 2.10(b) and is revoked in
accordance therewith) or (d) the assignment of any Loan other than on the last
day of the Interest Period applicable thereto as a result of a request by
Borrower pursuant to either Section 2.6 or Section  2.18, then, in any such
event, Borrower shall compensate each Lender for the loss, cost and expense
attributable to such event.  In the case of a Loan, such loss, cost or expense
to any Lender shall be deemed to include an amount determined by such Lender to
be the excess, if any, of (i) the amount of interest which would have accrued
on the principal amount of such Loan had such event not occurred, at the LIBO
Rate that would have been applicable to such Loan, for the period from the date
of such event to the last day of the then current Interest Period therefor (or,
in the case of a failure to borrow, convert or continue, for the period that
would have been the Interest Period for such Loan), over (ii) the amount of
interest which would accrue on such principal amount for such period at the
interest rate which such Lender would bid were it to bid, at the commencement
of such period, for dollar deposits of a comparable amount and period from
other banks in the eurodollar market.  A certificate of any Lender setting
forth any amount or amounts that such Lender is entitled to receive, together
with the calculation thereof, pursuant to this Section shall be delivered to
Borrower and to the Australian Administrative Agent and shall be conclusive
absent demonstrable error.  Borrower shall pay to the Australian Administrative
Agent for the





                                       25
<PAGE>   31


account such Lender the amount shown as due on any such certificate within 10
days after receipt thereof.

         SECTION 2.16.        Taxes.

         (a)     Any and all payments by or on account of any obligation of
Borrower hereunder shall be made free and clear of and without deduction for
any Indemnified Taxes or Other Taxes; provided that if Borrower shall be
required to deduct any Indemnified Taxes or Other Taxes from such payments,
then (i) the sum payable shall be increased as necessary so that after making
all required deductions (including deductions applicable to additional sums
payable under this Section) the Australian Administrative Agent, the Global
Administrative Agent or Lender (as the case may be) receives an amount equal to
the sum it would have received had no such deductions been made, (ii) Borrower
shall make such deductions and (iii) Borrower shall pay the full amount
deducted to the relevant Governmental Authority in accordance with applicable
law.

         (b)     In addition, Borrower shall pay any Other Taxes to the
relevant Governmental Authority in accordance with applicable law.

         (c)     Borrower shall pay the Australian Administrative Agent, the
Global Administrative Agent and each Lender, within 10 days after written
demand therefor, the full amount of any Indemnified Taxes or Other Taxes paid
by the Australian Administrative Agent, the Global Administrative Agent or such
Lender, as the case may be, on or with respect to any payment by or on account
of any obligation of Borrower hereunder (including Indemnified Taxes or Other
Taxes imposed or asserted on or attributable to amounts payable under this
Section) and any penalties, interest and reasonable expenses arising therefrom
or with respect thereto (other than any such penalties or interest arising
through the failure of the Australian Administrative Agent, the Global
Administrative Agent or Lender to act as a reasonably prudent agent or lender,
respectively), whether or not such Indemnified Taxes or Other Taxes were
correctly or legally imposed or asserted by the relevant Governmental
Authority.  A certificate as to the amount of such payment or liability
delivered to Borrower by a Lender, or by either the Australian Administrative
Agent or the Global Administrative Agent on its own behalf or on behalf of a
Lender, shall be conclusive absent demonstrable error.

         (d)     As soon as practicable after any payment of Indemnified Taxes
or Other Taxes by Borrower to a Governmental Authority, Borrower shall deliver
to the Australian Administrative Agent the original or a certified copy of a
receipt issued by such Governmental Authority evidencing such payment, a copy
of the return reporting such payment or other evidence of such payment
reasonably satisfactory to the Australian Administrative Agent.

         (e)     Any Foreign Lender that is entitled to an exemption from or
reduction of withholding tax under the law of the jurisdiction in which
Borrower is located, or any treaty to





                                       26
<PAGE>   32


which such jurisdiction is a party, with respect to payments under this
Agreement shall deliver to Borrower (with a copy to the Australian
Administrative Agent), at the time or times prescribed by applicable law, such
properly completed and executed documentation prescribed by applicable law or
reasonably requested by Borrower as will permit such payments to be made
without withholding or at a reduced rate.

         SECTION 2.17.        Payments Generally; Pro Rata Treatment; Sharing
of Set-offs.

         (a)     Borrower shall make each payment required to be made by it
hereunder (whether of principal, interest or fees, or of amounts payable under
Section 2.14, 2.15 or 2.16, or otherwise) prior to 1:00 p.m., New York time, on
the date when due, in immediately available funds, without set-off or
counterclaim.  All such payments shall be made to the Australian Administrative
Agent, c/o Citibank, N.A., 399 Park Avenue, New York, NY USA 10043, Account
Name: Citibank Limited, Account No: 36058247, Reference: Citisecurities
Limited/Apache, except that payments pursuant to Sections 2.14, 2.16 and 10.3
shall be made directly to the Persons entitled thereto.  The Australian
Administrative Agent shall distribute any such payments received by it for the
account of any other Person to the appropriate recipient promptly following
receipt thereof.  If any payment hereunder shall be due on a day that is not a
Business Day, the date for payment shall be extended to the next succeeding
Business Day, and, in the case of any payment accruing interest, interest
thereon shall be payable for the period of such extension.  All payments
hereunder shall be made in dollars.

         (b)     If at any time insufficient funds are received by and
available to the Australian Administrative Agent to pay fully all amounts of
principal, interest and fees then due hereunder, such funds shall be applied
(i) first, towards payment of interest and fees then due hereunder, ratably
among the parties entitled thereto in accordance with the amounts of interest
and fees then due to such parties, and (ii) second, towards payment of
principal then due hereunder, ratably among the parties entitled thereto in
accordance with the amounts of principal then due to such parties.  If
insufficient funds are received due to Borrower's entitlement to withhold
amounts on account of Excluded Taxes in relation to a particular Lender, such
insufficiency shall not be subject to this Section 2.17(b) but shall be
withheld from and shall only affect payments made to such Lender.

         (c)     If any Lender shall, by exercising any right of set-off or
counterclaim or otherwise, obtain payment in respect of any principal of or
interest on any of its Loans resulting in such Lender receiving payment of a
greater proportion of the aggregate amount of its Loans and accrued interest
thereon than the proportion received by any other Lender, then the Lender
receiving such greater proportion shall purchase (for cash at face value)
participations in the Loans of other Lenders to the extent necessary so that
the benefit of all such payments shall be shared by the Lenders ratably in
accordance with the aggregate amount of principal of and accrued interest on
their respective Loans; provided that (i) if any such participations are
purchased and





                                       27
<PAGE>   33


all or any portion of the payment giving rise thereto is recovered, such
participations shall be rescinded and the purchase price restored to the extent
of such recovery, without interest, and (ii) the provisions of this paragraph
shall not be construed to apply to any payment made by Borrower pursuant to and
in accordance with the express terms of this Agreement or any payment obtained
by a Lender as consideration for the assignment of or sale of a participation
in any of its Loans to any assignee or participant, other than to Borrower or
any Subsidiary or Affiliate thereof (as to which the provisions of this
paragraph shall apply).  Borrower consents to the foregoing and agrees, to the
extent it may effectively do so under applicable law, that any Lender acquiring
a participation pursuant to the foregoing arrangements may exercise against
Borrower rights of set-off and counterclaim with respect to such participation
as fully as if such Lender were a direct creditor of Borrower in the amount of
such participation.

         (d)     Unless the Australian Administrative Agent shall have received
notice from Borrower prior to the date on which any payment is due to the
Australian Administrative Agent for the account of the Lenders hereunder that
Borrower will not make such payment, the Australian Administrative Agent may
assume that Borrower has made such payment on such date in accordance herewith
and may, in reliance upon such assumption, but is under no obligation to,
distribute to the Lenders the amount due.  In such event, if Borrower has not
in fact made such payment, then each of the Lenders severally agrees to repay
to the Australian Administrative Agent forthwith on demand the amount so
distributed to such Lender with interest thereon, for each day from and
including the date such amount is distributed to it to but excluding the date
of payment to the Australian Administrative Agent, at a rate reasonably
determined by the Australian Administrative Agent in accordance with banking
industry rules on interbank compensation.

         (e)     If any Lender shall fail to make any payment required to be
made by it pursuant to Section 2.17(d), then the Australian Administrative
Agent may, in its discretion (notwithstanding any contrary provision hereof),
apply any amounts thereafter received by the Australian Administrative Agent
for the account of such Lender to satisfy such Lender's obligations under such
Section until all such unsatisfied obligations are fully paid.

         SECTION 2.18.        Mitigation Obligations; Replacement of Lenders.

         (a)     If any Lender requests compensation under Section 2.14, or if
Borrower is required to pay any additional amount to any Lender or any
Governmental Authority for the account of any Lender pursuant to Section 2.16,
then such Lender shall use reasonable efforts to designate a different lending
office for funding or booking its Loans hereunder or to transfer its rights and
obligations hereunder to another of its offices, branches or affiliates, if, in
the judgment of such Lender, such designation or transfer (i) would eliminate
or reduce amounts payable pursuant to Section 2.14 or 2.16, as the case may be,
in the future and (ii) would not subject such Lender to any unreimbursed cost
or expense and would not otherwise be disadvantageous to such Lender.





                                       28
<PAGE>   34


Borrower hereby agrees to pay all reasonable costs and expenses incurred by any
Lender in connection with any such designation or transfer.

         (b)     If any Lender requests compensation under Section 2.14, or if
Borrower is required to pay any additional amount to any Lender or any
Governmental Authority for the account of any Lender pursuant to Section 2.16,
or if any Lender defaults in its obligation to fund Loans hereunder, then
Borrower may, upon notice to such Lender and the Australian Administrative
Agent and the Global Administrative Agent, require such Lender to transfer and
delegate, without recourse or expense to, or warranty by, such Lender (in
accordance with and subject to the restrictions contained in Section 10.4), all
its interests, rights and obligations under this Agreement to a transferee
designated by Borrower and which meets the requirements of Section 10.4(b) that
shall assume such obligations (which transferee may be another Lender, if a
Lender accepts such transfer); provided that (i) Borrower shall have received
the prior written consent of the Australian Administrative Agent and the Global
Administrative Agent, which consent shall not unreasonably be withheld, (ii)
such Lender shall have received payment of an amount equal to the outstanding
principal of its Loans, accrued interest thereon, accrued fees and all other
amounts payable to it hereunder, from the transferee (to the extent of such
outstanding principal and accrued interest and fees) or Borrower (in the case
of all other amounts), (iii) the transferee and transferor shall have entered
into a Substitution Certificate, and (iv) in the case of any such transfer
resulting from a claim for compensation under Section 2.14 or payments required
to be made pursuant to Section 2.16, such transfer will result in a reduction
in such compensation or payments.

         SECTION 2.19.        Currency Conversion and Currency Indemnity.

         (a)     Payments in Agreed Currency.  Borrower 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
Borrower or otherwise howsoever), such payment shall constitute a discharge of
the liability of Borrower hereunder and under the other Loan Documents in
respect of such obligation only to the extent of the amount of the Agreed
Currency which the relevant 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 next
Business





                                       29
<PAGE>   35


Day following the date such judgment is given and in any event Borrower shall
be obligated to pay the Agents and the Lenders any deficiency in accordance
with Section 2.19(c).  For the foregoing purposes "rate of exchange" means the
rate at which the relevant 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 Lender or
any Agent receives any payment or payments on account of the liability of
Borrower hereunder pursuant to any judgment or order in any Other Currency, and
(ii) the amount of the Agreed Currency which the relevant 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 Borrower on demand shall, and
Borrower, jointly and severally, hereby agrees to, indemnify and save the
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 2.19(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 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 III

                         Representations and Warranties

         In order to induce the Lenders and the Agents to enter into this
Agreement and the Lenders to make Loans hereunder, Borrower represents and
warrants unto the Agents and each Lender as set forth in this Article III.

         SECTION 3.1.         Organization.  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 where the
failure to so qualify would have a Material Adverse Effect.





                                       30
<PAGE>   36


         SECTION 3.2.         Authorization and Validity.  The execution,
delivery and performance by each of Apache Energy Limited and Apache Oil
Australia of this Agreement and each other Loan Document executed or to be
executed by it, are within the corporate powers of Apache Energy Limited and
Apache Oil Australia, have been duly authorized by all necessary corporate
action on behalf of it, and do not (a) contravene the certificate or articles
of incorporation or memorandum or other organizational documents of Apache
Energy Limited and Apache Oil Australia, as the case may be; (b) contravene any
material contractual restriction, law or governmental regulation or court
decree or order binding on or affecting Apache Energy Limited or Apache Oil
Australia or any Subsidiary; or (c) result in, or require the creation or
imposition of, any Lien, not permitted by Section 7.1, on any of properties of
Apache Energy Limited, Apache Oil Australia or any of their Subsidiaries.  This
Agreement constitutes, and each other Loan Document executed by Apache Energy
Limited and Apache Oil Australia will, on the due execution and delivery
thereof, constitute, the legal, valid and binding obligations of Apache Energy
Limited and Apache Oil Australia, respectively, enforceable in accordance with
their respective terms subject as to enforcement only to bankruptcy,
insolvency, reorganization, moratorium or other similar laws affecting the
enforcement of creditor rights generally and to general principles of equity.

         SECTION 3.3.         Government Approval and Regulation.  No
authorization or approval or other action by, and no notice to or filing with,
any governmental authority or regulatory body or other Person is required for
the due execution, delivery or performance by Apache Energy Limited or Apache
Oil Australia of this Agreement or any other Loan Document.  Neither Parent,
Apache Energy Limited or Apache Oil Australia nor any of their Subsidiaries is
an "investment company," within the meaning of the Investment Company Act of
1940, as amended, or a "holding company," or a "subsidiary company" of a
"holding company," or an "affiliate" of a "holding company" or of a "subsidiary
company" of a "holding company," within the meaning of the Public Utility
Holding Company Act of 1935, as amended.

         SECTION 3.4.         Superannuation Scheme.  Borrower administers a
defined benefit superannuation fund (as described in the Superannuation
Industry (Supervision) Act 1993 (the "SIS Act") and Parent, Borrower and their
Subsidiaries liabilities under such fund do not in the aggregate exceed
$25,000,000.

         SECTION 3.5.         Regulation U.  Borrower is not engaged in the
business of extending credit for the purpose of purchasing or carrying margin
stock, and no proceeds of any Loans will be used for a purpose which violates,
or would be inconsistent with, Regulation U.  Terms for which meanings are
provided in Regulations U are used in this Section with such meanings.

         SECTION 3.6.         Taxes.  Borrower and each of its Subsidiaries has
to the best knowledge of Borrower after due investigation filed all tax returns
and reports required by law to have been filed by it and has paid all taxes and
governmental charges thereby shown to be owing, except any





                                       31
<PAGE>   37


such taxes or charges which are being contested in good faith by appropriate
proceedings and for which adequate reserves in accordance with GAAP shall have
been set aside on its books or which the failure to file or pay could not
reasonably be expected to have a Material Adverse Effect.

         SECTION 3.7.         Subsidiaries; Restricted Subsidiaries.  Schedule
3.7 hereto contains an accurate list of all of the presently existing
Subsidiaries, including, without limitation, Restricted Subsidiaries, of
Borrower 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 Borrower 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.

                                   ARTICLE IV

                                   Conditions

         SECTION 4.1.         Initial Loan.  The obligations of the Lenders to
make the initial Loan shall be subject to the prior or concurrent satisfaction
of each of the conditions precedent set forth in this Section 4.1.

         (a)     Resolutions and Officers Certificates.  The Australian
                 Administrative Agent and the Global Administrative Agent shall
                 have received from Borrower a certificate, dated the Closing
                 Date, of the Secretary or Assistant Secretary of each of
                 Apache Energy Limited and Apache Oil Australia as to (a)
                 resolutions of its governing board, then in full force and
                 effect authorizing the execution, delivery and performance of
                 this Agreement and each other Loan Document to be executed by
                 it; (b) the incumbency and signatures of those of its officers
                 authorized to act with respect to this Agreement and each
                 other Loan Document executed by it; and (c) its articles of
                 incorporation and bylaws; upon which certificates each Lender
                 may conclusively rely until it shall have received a further
                 certificate of an authorized officer of either Apache Energy
                 Limited or Apache Oil Australia, respectively, canceling or
                 amending such prior certificate.

         (b)     Existing Facilities.  The Australian Administrative Agent and
                 the Global Administrative Agent shall have received a
                 certificate, signed by an Authorized Officer of Parent and
                 each Borrower, stating that Parent or its Subsidiaries have
                 repaid in full and terminated the Existing Global Credit
                 Facilities concurrently with the initial Combined Loans under
                 the Combined Credit Agreements.





                                       32
<PAGE>   38


         (c)     Opinions of Counsel.  The Global Administrative Agent shall
                 have received opinions, dated the Closing Date, addressed to
                 the Australian Administrative Agent and the Global
                 Administrative Agent, the other Agents and all Lenders, from
                 (i) Parker & Parker, counsel to Borrower, in substantially the
                 form attached hereto as Exhibit A-1, (ii) Chamberlain,
                 Hrdlicka, White, Williams & Martin, U.S. counsel to Borrower,
                 in substantially the form attached hereto as Exhibit A-2, and
                 (iii) Allen Allen & Hemsley, counsel to the Australian
                 Administrative Agent and the Global Administrative Agent, in
                 substantially the form attached hereto as Exhibit B.

         (d)     Closing Fees and Expenses.  The Australian Administrative
                 Agent shall have received for its own account, or for the
                 account of each Lender and other Agent, as the case may be,
                 all fees, costs and expenses due and payable pursuant hereto.

         (e)     Financial Statements.  The Australian Administrative Agent and
                 the Global Administrative Agent shall have received a
                 certificate, signed by an Authorized Officer of Borrower,
                 stating that (i) the audited consolidated financial statements
                 of Parent and its Subsidiaries for fiscal year 1996 and (ii)
                 the report and accompanying financial statements of Parent,
                 Borrower and its Subsidiaries for fiscal year 1996
                 (collectively, the "1996 Financials") fairly present Parent's
                 and Borrower's consolidated financial condition and results of
                 operations and that prior to the Global Effective Date no
                 material adverse change in the condition or operations of
                 Parent or Borrower and its Subsidiaries, taken as a whole,
                 from that reflected in the 1996 Financials has occurred and is
                 continuing.

         (f)     Environmental Warranties.  In the ordinary course of its
                 business, each Borrower conducts an ongoing review of the
                 effect of existing Environmental Laws on the business,
                 operations and properties of each Borrower and their
                 Subsidiaries, in the course of which it attempts to identify
                 and evaluate associated liabilities and costs (including,
                 without limitation, any capital or operating expenditures
                 required for clean-up or closure of properties presently or
                 previously owned, 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 Australian Administrative Agent and the
                 Global Administrative Agent shall have received a certificate,
                 signed by an Authorized Officer of each Borrower, stating that
                 after such review each Borrower has reasonably concluded that
                 existing Environmental Laws are unlikely to have





                                       33
<PAGE>   39


                 a Material Adverse Effect, or that each Borrower has
                 established adequate reserves in respect of any required
                 clean-up.

         (g)     Global Effectiveness Notice.  The Australian Administrative
                 Agent and the Global Administrative Agent shall have received
                 the Global Effectiveness Notice.

         (h)     Canadian Credit Agreement and U.S. Credit Agreement.  The
                 Australian Administrative Agent and the Global Administrative
                 Agent shall have received copies of the executed Canadian
                 Credit Agreement and the other Canadian Loan Documents and the
                 executed U.S. Credit Agreement and the other U.S. Loan
                 Documents.

         (i)     Guaranty.  The Australian Administrative Agent and the Global
                 Administrative Agent shall have received an executed Guaranty
                 for Borrower.

         (j)     Litigation.  The Australian Administrative Agent and the
                 Global Administrative Agent shall have received a certificate,
                 signed by an Authorized Officer of Parent, stating that no
                 litigation, arbitration, governmental proceeding, Tax claim,
                 dispute or administrative or other proceeding shall be pending
                 or, to the knowledge of Parent, threatened against Parent or
                 any of its Subsidiaries which could reasonably be expected to
                 have a Material Adverse Effect or which purports to affect the
                 legality, validity or enforceability of this Agreement or any
                 other Loan Document.

         (k)     Other Documents.  The Australian Administrative Agent and the
                 Global Administrative Agent shall have received such other
                 instruments and documents as any of the Agents or their
                 counsel may have reasonably requested.

The Australian Administrative Agent shall notify Borrower, the other Agents and
the Lenders of the Global Effective Date, and such notice shall be conclusive
and binding.  Notwithstanding the foregoing, the obligations of the Lenders to
make Loans hereunder shall not become effective unless each of the foregoing
conditions is satisfied (or waived pursuant to Section 10.2) at or prior to
3:00 p.m., New York time, on June 30, 1997 (and, in the event such conditions
are not so satisfied or waived, the Commitments shall terminate at such time).

         SECTION 4.2.         All Loans.  The obligation of each Lender to fund
any Loan which results in an increase in the aggregate outstanding principal
amount of Loans under this Agreement on the occasion of any Borrowing shall be
subject to the satisfaction of each of the conditions precedent set forth in
this Section 4.2.

         (a)     Compliance with Warranties and No Default.  Both before and
                 after giving effect to any Borrowing, the following statements
                 shall be true and correct: (1) the





                                       34
<PAGE>   40


                 representations and warranties set forth in Article III shall
                 be true and correct with the same effect as if then made
                 (unless stated to relate solely to an earlier date, in which
                 case such representations and warranties shall be true and
                 correct as of such earlier date); and (b) no Default or Event
                 of Default shall have then occurred and be continuing.

         (b)     Borrowings.  The Australian Administrative Agent shall have
                 received a Borrowing Request for any Borrowing.

                                   ARTICLE V

                             Affirmative Covenants

         Until the Commitments have expired or been terminated and all
Obligations shall have been paid in full and unless the Required Lenders shall
otherwise consent in writing, Borrower covenants and agrees with the Lenders
that:

         SECTION 5.1.         Financial Reporting and Notices.  Borrower will
furnish, will cause to be furnished or will assist Parent in furnishing, to
each Lender, the Australian Administrative Agent and the Global Administrative
Agent copies of the following financial statements, reports, notices and
information:

         (a)     within 90 days after the end of each Fiscal Year of Borrower,
                 a copy of the report for such fiscal year and accompanying
                 financial statements for Borrower and its Subsidiaries,
                 including therein consolidated balance sheets of Borrower and
                 its Subsidiaries as of the end of such fiscal year and
                 consolidated statements of earnings and cash flow of Borrower
                 and its Subsidiaries for such fiscal year, all prepared in
                 accordance with GAAP in each case certified by an Authorized
                 Officer of Borrower, such signature deemed to be a
                 certification that such financial statements present fairly in
                 accordance with GAAP the financial position of the Borrower
                 and its Subsidiaries;

         (b)     within 45 days after the end of each of the first three fiscal
                 quarters of each fiscal year of Borrower commencing with the
                 fiscal quarter ending June 30, 1997, unaudited consolidated
                 balance sheets of Borrower and its Subsidiaries as of the end
                 of such fiscal quarter and consolidated statements of earnings
                 and cash flow of Borrower and its Subsidiaries for such fiscal
                 quarter and for the period commencing at the end of the
                 previous fiscal year and ending with the end of such fiscal
                 quarter, all prepared in accordance with GAAP certified by an
                 Authorized Officer of Borrower, such signature deemed to be a
                 certification that such financial





                                       35
<PAGE>   41


                 statements present fairly in accordance with GAAP the
                 financial position of the Borrower and its Subsidiaries;

         (c)     together with the financial statements described in (a) and
                 (b) above, a compliance certificate, in substantially the form
                 of Exhibit C or any other form approved by the Australian
                 Administrative Agent and the Global Administrative Agent,
                 executed by an Authorized Officer of Parent, an Authorized
                 Officer of Apache Energy Limited and an Authorized Officer of
                 Apache Oil Australia;

         (d)     within five (5) days after the occurrence of each Default, a
                 statement of an Authorized Officer of Parent and an Authorized
                 Officer of Borrower setting forth details of such Default and
                 the action which Parent and Borrower have taken and proposes
                 to take with respect thereto;

         (e)     promptly after the sending or filing thereof, copies of all
                 material public filings, reports and communications from
                 Parent or Borrower, and all reports and registration
                 statements which Parent or Borrower or any of their
                 Subsidiaries files with the Securities and Exchange
                 Commission, any national securities exchange or any federal
                 securities regulatory body in Australia;

         (f)     such other information respecting the financial condition or
                 operations of Borrower or any of its Subsidiaries as any
                 Lender through the Australian Administrative Agent may from
                 time to time reasonably request.

         SECTION 5.2.         Compliance with Laws.  Borrower will, and will
cause each of its Subsidiaries to, comply in all material respects with all
applicable laws, rules, regulations and orders where noncompliance therewith
may reasonably be expected to have a Material Adverse Effect, except where the
necessity of compliance therewith is contested in good faith by appropriate
proceedings.

         SECTION 5.3.         Maintenance of Properties.  Borrower will, and
will cause each of its Subsidiaries to, maintain, preserve, protect and keep
valid title to, or valid leasehold interest in, all of its properties and
assets, real and personal, tangible and intangible, of any nature whatsoever
(including patents, trademarks, trade names, service marks and copyrights),
free and clear of all Liens, charges or claims (including infringement claims
with respect to patents, trademarks, copyrights and the like) except as
permitted pursuant to Section 7.1 and except for imperfections and other
burdens of title thereto as do not in the aggregate materially detract from the
value thereof or for the use thereof in their businesses (taken as a whole).

         SECTION 5.4.         Insurance.  Borrower will, and will cause each of
its Subsidiaries to, maintain or cause to be maintained with responsible
insurance companies (subject to self-insured





                                       36
<PAGE>   42


retentions) insurance with respect to its properties and business against such
casualties and contingencies and of such types and in such amounts as is
customary in the case of similar businesses.

         SECTION 5.5.         Books and Records.  Borrower will, and will cause
each of its Subsidiaries to, keep books and records which accurately reflect
all of its business affairs and transactions and permit the Australian
Administrative Agent or the Global Administrative Agent and the other Agents
and each Lender through the Australian Administrative Agent or the Global
Administrative Agent or any of their respective authorized representatives,
during normal business hours and at reasonable intervals, to visit all of its
offices, to discuss its financial matters with its officers and to examine
(and, at the expense of the Australian Administrative Agent, the Global
Administrative Agent or such other Agent or Lender or, if a Default or Event of
Default has occurred and is continuing, at the expense of Borrower, photocopy
extracts from) any of its books or other records.

         SECTION 5.6.         Minimum Book Value for Assets of Parent and Its
Restricted Subsidiaries.  Parent shall maintain an aggregate book value for
assets of Parent and its Restricted Subsidiaries (without duplication and
excluding the aggregate book value attributable to Parent or any Restricted
Subsidiary arising in connection with any Subsidiary which is not a Restricted
Subsidiary) as of the end of any fiscal quarter, commencing with the quarter
ending March 31, 1997, equal to or greater than the difference of (i) US
$2,000,000,000 less (ii) the aggregate amount of any non-cash write downs
(other than for recurring depletion or depreciation) made by Parent and any of
its Restricted Subsidiaries; provided that, if as of the end of any fiscal
quarter Parent is not in compliance with this Section, Parent, for a period of
30 days following the delivery of the financial statements for such fiscal
quarter, shall be entitled to cure such non-compliance by delivering a notice
to the Global Administrative Agent designating certain Unrestricted
Subsidiaries as Restricted Subsidiaries for the purposes of this Section at
which time the Global Administrative Agent shall redetermine compliance with
this Section using such newly-designated Restricted Subsidiaries in such
redetermination.

         SECTION 5.7.         Use of Proceeds.  Borrower will, and will cause
each Subsidiary to, use the proceeds of the Loans (i) to refinance existing
Indebtedness of Borrower and its Subsidiaries or (ii) for Borrower's and its
Subsidiaries' general corporate purposes, including any non-hostile
acquisitions.

         SECTION 5.8.         Borrowing Request.  It is a condition precedent
to the operation of this Article V that Borrower has submitted a Borrowing
Request to the Australian Administrative Agent.





                                       37
<PAGE>   43


                                   ARTICLE VI

                              Financial Covenants

         Until the Commitments have expired or been terminated and all
Obligations shall have been paid in full and unless the Required Lenders shall
otherwise consent in writing, Borrower covenants and agrees with the Lenders
that:

         SECTION 6.1.         Minimum Tangible Net Worth.  Parent will not
permit its Consolidated Tangible Net Worth as of the end of any fiscal quarter,
commencing with the quarter ending March 31, 1997, to be less than (i)
$1,000,000,000 plus (ii) an amount equal to 50% of the sum of Parent's and its
Subsidiaries' consolidated net income for each fiscal quarter, beginning with
the fiscal quarter ending June 30, 1997, during which such consolidated net
income is greater than $0.

         SECTION 6.2.         Ratio of Total Debt to Capital.  Parent will not
permit its ratio (expressed as a percentage) of (i) the consolidated Debt of
Parent and its Subsidiaries to (ii) Capital to be greater than 60% at the end
of any fiscal quarter, commencing with the fiscal quarter ending March 31,
1997.

                                  ARTICLE VII

                               Negative Covenants

         Until the Commitments have expired or terminated and all Obligations
have been paid in full and unless the Required Lenders shall otherwise consent
in writing, Borrower covenants and agrees with the Lenders that:

         SECTION 7.1.         Liens.  Borrower will not, and will not permit
any of its Subsidiaries to, create, incur, assume or suffer to exist any Lien
upon the stock, assets, or indebtedness of Borrower or any of its Subsidiaries
to secure Indebtedness of Borrower or any other Person except:

         (i)     Liens on any property or assets owned or leased by Borrower or
                 any Subsidiary existing at the time such property or asset was
                 acquired (or at the time such Person became a Subsidiary);
                 provided that in the case of the acquisition of a Subsidiary
                 such Lien only encumbers property or assets immediately prior
                 to, or at the time of, the acquisition by Borrower of such
                 Subsidiary;





                                       38
<PAGE>   44


         (ii)    purchase money Liens so long as such Liens only encumber
                 property or assets acquired with the proceeds of the purchase
                 money indebtedness incurred in connection with such Lien;

         (iii)   Liens granted by an Unrestricted Subsidiary on its assets to
                 secure Indebtedness incurred by such Unrestricted Subsidiary;

         (iv)    Liens on assets of a Restricted Subsidiary securing
                 Indebtedness of a Restricted Subsidiary owing to Borrower, to
                 Parent or to another Restricted Subsidiary or Liens on assets
                 of an Unrestricted Subsidiary securing Indebtedness of an
                 Unrestricted Subsidiary owing to Borrower, to Parent, to a
                 Restricted Subsidiary or to another Unrestricted Subsidiary;

         (v)     Liens existing on the Closing Date set forth on Schedule 7.1;

         (vi)    Liens arising under operating agreements;

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

         (viii)  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 oil, natural gas and natural gas liquids, 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;

         (ix)    Liens on the stock or other ownership interests of or in any
                 Unrestricted Subsidiary;

         (x)     Liens for taxes, assessments or similar charges, incurred in
                 the ordinary course of business, that are not yet due and
                 payable or that are being contested as set forth in Section
                 3.6;

         (xi)    pledges or deposits made in the ordinary course of business to
                 secure payment of worker's compensation, or to participate in
                 any fund in connection with worker's compensation,
                 unemployment insurance, old-age pensions or other social
                 security programs;





                                       39
<PAGE>   45


         (xii)   Liens imposed by mandatory provisions of law such as for
                 mechanics', materialmen's, warehousemen's, carriers', or other
                 like Liens, securing obligations incurred in the ordinary
                 course of business that are not yet due and payable;

         (xiii)  Liens in renewal or extension of any of the foregoing
                 permitted Liens, so long as limited to the property or assets
                 encumbered and the amount of Indebtedness secured immediately
                 prior to such renewal or extension; and

         (xiv)   in addition to Liens permitted by clauses (i) through (xvi)
                 above, Liens on property or assets of Parent, Borrower and any
                 of their Subsidiaries if the aggregate Indebtedness of all
                 such Persons secured thereby does not exceed $100,000,000.

         SECTION 7.2.         Mergers.  Borrower will not liquidate or
dissolve, amalgamate with, consolidate with, or merge into or with, any other
Person, or sell, lease or otherwise transfer all or substantially all of its
assets unless (a) Borrower is the survivor of such amalgamation, merger or
consolidation, and (b) no Default or Event of Default has occurred and is
continuing or would occur after giving effect thereto.

         SECTION 7.3.         Asset Dispositions.  Borrower will not, and will
not permit any of its Restricted Subsidiaries to, sell, transfer, lease,
contribute or otherwise convey, or grant options, warrants or other rights with
respect to all or substantially all of its assets.  Notwithstanding the
foregoing, nothing herein shall prohibit any transfer of any assets from
Borrower to any Subsidiary of Borrower, from any Subsidiary of Borrower to
Borrower or from a Subsidiary of Borrower to another Subsidiary of Borrower.

         SECTION 7.4.         Transactions with Affiliates.  Borrower will not,
and will not permit any of its Subsidiaries to, enter into, or cause, suffer or
permit to exist any arrangement or contract with any of its other Affiliates
unless such arrangement or contract or group of arrangements or contracts, as
the case may be, are conducted on an arms-length basis.

         SECTION 7.5.         Restrictive Agreements.  Borrower will not, and
will not permit any of its Subsidiaries to, enter into any agreement (excluding
this Agreement or any other Loan Document) limiting the ability of Borrower to
amend or otherwise modify this Agreement or any other Loan Document.  Borrower
will not, and will not permit any of its Restricted Subsidiaries to, enter into
any agreement which restricts or prohibits the ability of any Restricted
Subsidiary to make any payments, directly or indirectly, to Borrower by way of
dividends, advances, repayments of loans or advances, reimbursements of
management and other intercompany charges, expenses and accruals or other
returns on investments, or any other agreement or arrangement which restricts
the ability of any such Restricted Subsidiary to make any payment, directly or
indirectly, to Borrower.





                                       40
<PAGE>   46


         SECTION 7.6.         Guaranties.  Parent and Borrower will not, and
will not permit any of its Restricted Subsidiaries to, guaranty any
Indebtedness not included in the consolidated Debt of Parent and its
Subsidiaries in an aggregate outstanding principal amount at any time exceeding
$100,000,000.

                                  ARTICLE VIII

                               Events of Default

         SECTION 8.1.         Listing of Events of Default.  Each of the
following events or occurrences described in this Section 8.1 shall constitute
an "Event of Default":

         (a)     Non-Payment of Obligations.  Borrower shall default in the
                 payment or prepayment when due of any principal of any Loan,
                 or Borrower shall default (and such default shall continue
                 unremedied for a period of five (5) Business Days) in the
                 payment when due of any interest, fee or of any other
                 obligation hereunder.

         (b)     Breach of Warranty.  Any representation or warranty of
                 Borrower made or deemed to be made hereunder or in any other
                 Loan Document or any other writing or certificate furnished by
                 or on behalf of Borrower to the Global Administrative Agent,
                 the Australian Administrative Agent, any other Agent or any
                 Lender for the purposes of or in connection with this
                 Agreement or any such other Loan Document is or shall be false
                 or misleading when made in any material respect.

         (c)     Non-Performance of Covenants and Obligations.  Borrower or
                 Parent shall default in the due performance and observance of
                 any of its obligations under Section 5.6, Section 7.2 or under
                 Article VI.

         (d)     Non-Performance of Other Covenants and Obligations.  Borrower
                 or Parent shall default in the due performance and observance
                 of any other agreement contained herein or in any other Loan
                 Document, and such default shall continue unremedied for a
                 period of 30 days after notice thereof shall have been given
                 to Borrower by the Global Administrative Agent, the Australian
                 Administrative Agent, or the Required Lenders.

         (e)     Default on Other Indebtedness.  A default shall occur in the
                 payment when due (subject to any applicable grace period),
                 whether by acceleration or otherwise, of any direct payment
                 obligation of Parent, Borrower or any of its Restricted
                 Subsidiaries in any amount in excess of $25,000,000.

         (f)     [Intentionally omitted].





                                       41
<PAGE>   47



         (g)     Administration, Winding Up, Arrangements and Insolvency.
                 Borrower or any of its Restricted Subsidiaries shall (a)
                 become or under legislation is presumed or taken to be
                 insolvent or generally fail to pay, or admit in writing its
                 inability or unwillingness to generally pay, debts as they
                 become due; (b) apply for, consent to, or acquiesce in, the
                 appointment of a trustee, receiver, receiver and manager
                 sequestrator or other custodian for Borrower, or any of its
                 Restricted Subsidiaries, or any substantial part of the
                 property of any thereof, or make a general assignment for the
                 benefit of creditors; (c) in the absence of such application,
                 consent or acquiescence, permit or suffer to exist the
                 appointment of an administrator, trustee, receiver, receiver
                 and manager, sequestrator or other custodian for Borrower, or
                 any of its Restricted Subsidiaries, or for a substantial part
                 of the property of any thereof, and such administrator,
                 trustee, receiver, receiver and manager sequestrator or other
                 custodian shall not be discharged within 60 days, provided
                 that Borrower and each Restricted Subsidiary hereby expressly
                 authorizes the Global Administrative Agent, the Australian
                 Administrative Agent, each other Agent and each Lender to
                 appear in any court conducting any relevant proceeding during
                 such 60-day period to preserve, protect and defend their
                 rights under the Loan Documents; (d) permit or suffer to exist
                 the commencement of any bankruptcy, insolvency,
                 reorganization, debt arrangement, compromise or composition
                 with or assignment for the benefit of its creditors or a class
                 of them, or other case or proceeding under any bankruptcy or
                 insolvency law, or any dissolution, winding up, administration
                 or liquidation proceeding, in respect of Borrower or any of
                 its Restricted Subsidiaries, and, if any such case or
                 proceeding is not commenced by Borrower or such Restricted
                 Subsidiary, such case or proceeding shall be consented to or
                 acquiesced in by Borrower or such Restricted Subsidiary or
                 shall result in the entry of an order for relief or shall
                 remain for 60 days undismissed or an investigation into all or
                 part of the affairs of Borrower under companies legislation,
                 provided that Borrower and each Restricted Subsidiary hereby
                 expressly authorizes the Global Administrative Agent, the
                 Australian Administrative Agent, and each Lender to appear in
                 any court conducting any such case or proceeding during such
                 60-day period to preserve, protect and defend their rights
                 under the Loan Documents; or (e) take any corporate or
                 partnership action authorizing, or in furtherance of, any of
                 the foregoing.

         (h)     Judgments.  Any judgment or order for the payment of money in
                 an amount of $25,000,000 or more in excess of valid and
                 collectible insurance in respect thereof or in excess of an
                 indemnity with respect thereto reasonably acceptable to the
                 Required Lenders shall be rendered against Parent, Borrower or
                 any of their Restricted Subsidiaries and either (a)
                 enforcement proceedings shall have been commenced by any
                 creditor upon such judgment or order, or (b) such judgment





                                       42
<PAGE>   48


                 shall have become final and non-appealable and shall have
                 remained outstanding for a period of 60 consecutive days.

         (i)     Change in Control.  Parent fails to own or control, directly
                 or indirectly, all of the voting shares of Borrower.

         (j)     Event of Default under Canadian Loan Documents or U.S. Loan
                 Documents.  Any "Event of Default" as defined in the Canadian
                 Loan Documents or the U.S. Loan Documents shall occur;
                 provided that the occurrence of a "Default" as defined in the
                 Canadian Loan Documents or the U.S. Loan Documents shall
                 constitute a Default under this Agreement; provided further
                 that if such "Default" is cured or waived under the Canadian
                 Loan Documents or the U.S. Loan Documents, as applicable, then
                 such "Default" shall no longer constitute a Default under this
                 Agreement.

         (k)     Enforcement Against Assets.  A receiver, receiver and manager
                 or similar officer is appointed to, Liens are enforced over or
                 distresses, attachments or other executions are levied or
                 enforced over all or any of the assets and undertaking of
                 Borrower in excess of $25,000,000 in the aggregate.

         SECTION 8.2.         Action if Administration, Winding Up,
Arrangements and Insolvency.  If any Event of Default described in Section
8.1(g) shall occur, the Commitments (if not theretofore terminated) shall
automatically terminate and the outstanding principal amount of all outstanding
Loans and all other obligations hereunder shall automatically be and become
immediately due and payable, without notice or demand.

         SECTION 8.3.         Action if Other Event of Default.  If any Event
of Default (other than any Event of Default described in Section 8.2) shall
occur for any reason, whether voluntary or involuntary, and be continuing, the
Australian Administrative Agent, upon the direction of the Required Lenders,
shall by notice to Borrower declare all of the outstanding principal amount of
the Loans and all other obligations hereunder to be due and payable and the
Commitments (if not theretofore terminated) to be terminated, whereupon the
full unpaid amount of such Loans and other obligations shall be and become
immediately due and payable, without further notice, demand or presentment, and
the Commitments shall terminate.





                                       43
<PAGE>   49


                                   ARTICLE IX

                                     Agents

         Each of the Lenders hereby irrevocably appoints The Chase Manhattan
Bank as the Global Administrative Agent, Morgan Guaranty Trust Company as
Global Documentation Agent, Citisecurities Limited as Australian Administrative
Agent, Bank of America National Trust and Savings Association, Sydney Branch as
Australian Documentation Agent, The Chase Manhattan Bank as Australian
Syndication Agent, and authorizes each such Agent to take such actions on its
behalf and to exercise such powers as are delegated to such Agent by the terms
hereof, together with such actions and powers as are reasonably incidental
thereto.

         Any bank serving as an Agent hereunder shall have the same rights and
powers in its capacity as a Lender as any other Lender and may exercise the
same as though it were not an Agent, and such bank and its Affiliates may
accept deposits from, lend money to and generally engage in any kind of
business with Borrower or any Subsidiary or other Affiliate thereof as if it
were not an Agent hereunder.

         The Agents shall not have any duties or obligations except those
expressly set forth herein.  Without limiting the generality of the foregoing,
(a) the Agents shall not be subject to any fiduciary or other implied duties,
regardless of whether a Default has occurred and is continuing, (b) each Agent
shall not have any duty to take any discretionary action or exercise any
discretionary powers, except discretionary rights and powers expressly
contemplated hereby that such Agent is required to exercise in writing by the
Required Lenders (or such other number or percentage of the Lenders as shall be
necessary under the circumstances as provided in Section 10.2), and (c) except
as expressly set forth herein, the Agents shall not have any duty to disclose,
and shall not be liable for the failure to disclose, any information relating
to Borrower or any of its Subsidiaries that is communicated to or obtained by
the bank serving as such Agent or any of its Affiliates in any capacity.  Each
Agent shall not be liable for any action taken or not taken by it with the
consent or at the request of the Required Lenders (or such other number or
percentage of the Lenders as shall be necessary under the circumstances as
provided in Section 10.2) or in the absence of its own gross negligence or
willful misconduct.  Each Agent shall be deemed not to have knowledge of any
Default unless and until written notice thereof is given to such Agent by
Borrower or a Lender, and such Agent shall not be responsible for or have any
duty to ascertain or inquire into (i) any statement, warranty or representation
made in or in connection with this Agreement, (ii) the contents of any
certificate, report or other document delivered hereunder or in connection
herewith, (iii) the performance or observance of any of the covenants,
agreements or other terms or conditions set forth herein, (iv) the validity,
enforceability, effectiveness or genuineness of this Agreement or any other
agreement, instrument or document, or (v) the satisfaction of any condition set
forth in Article IV or elsewhere herein, other than to confirm receipt of items
expressly required to be delivered to such Agent.





                                       44
<PAGE>   50



         The Australian Administrative Agent, the Global Administrative Agent
and the other Agents shall be entitled to rely upon, and shall not incur any
liability for relying upon, any notice, request, certificate, consent,
statement, instrument, document or other writing believed by it to be genuine
and to have been signed or sent by the proper Person.  The Australian
Administrative Agent, the Global Administrative Agent and the other Agents also
may rely upon any statement made to it orally or by telephone and believed by
it to be made by the proper Person, and shall not incur any liability for
relying thereon.  The Australian Administrative Agent, the Global
Administrative Agent and the other Agents may consult with legal counsel (who
may be counsel for Borrower), independent accountants and other experts
selected by it, and shall not be liable for any action taken or not taken by it
in accordance with the advice of any such counsel, accountants or experts.

         Any Agent may perform any and all its duties and exercise its rights
and powers by or through any one or more sub-agents appointed by such Agent.
Any Agent and any such sub-agent may perform any and all its duties and
exercise its rights and powers through their respective Related Parties.  The
exculpatory provisions of the preceding paragraphs shall apply to any such
sub-agent and to the Related Parties of such Agent and any such sub-agent, and
shall apply to their respective activities in connection with the syndication
of the credit facilities provided for herein as well as activities as an Agent.

         Subject to the appointment and acceptance of a successor Global
Administrative Agent or Australian Administrative Agent as provided in this
paragraph, the Global Administrative Agent or the Australian Administrative
Agent may resign at any time by notifying the Lenders and Borrower.  Upon any
such resignation, Borrower shall have the right, in consultation with the
Combined Required Lenders, to appoint one of the Lenders as a successor.  If no
successor shall have been so appointed by Borrower and shall have accepted such
appointment within 30 days after the retiring Global Administrative Agent or
Australian Administrative Agent gives notice of its resignation, then the
retiring Global Administrative Agent or Australian Administrative Agent may, on
behalf of the Lenders, appoint a successor Global Administrative Agent or
Australian Administrative Agent which shall be a bank with an office in New
York, New York, or Sydney, Australia, respectively, or an Affiliate of any such
bank.  Upon the acceptance of its appointment as Global Administrative Agent or
Australian Administrative Agent hereunder by a successor, such successor shall
succeed to and become vested with all the rights, powers, privileges and duties
of the retiring Global Administrative Agent or Australian Administrative Agent,
and the retiring Global Administrative Agent or Australian Administrative Agent
shall be discharged from its duties and obligations hereunder.  The fees
payable by Borrower to a successor Global Administrative Agent or Australian
Administrative Agent shall be the same as those payable to its predecessor
unless otherwise agreed between Borrower and such successor.  After the Global
Administrative Agent's or Australian Administrative Agent's resignation
hereunder, the provisions of this Article and Section 10.3 shall continue in
effect for the benefit of such retiring Global Administrative Agent or
Australian Administrative Agent, its sub-agents and their respective





                                       45
<PAGE>   51


Related Parties in respect of any actions taken or omitted to be taken by any
of them while it was acting as Global Administrative Agent or Australian
Administrative Agent, respectively.

         Each Lender acknowledges that it has, independently and without
reliance upon any Agent or any other Lender and based on such documents and
information as it has deemed appropriate, made its own credit analysis and
decision to enter into this Agreement.  Each Lender also acknowledges that it
will, independently and without reliance upon any Agent or any other Lender and
based on such documents and information as it shall from time to time deem
appropriate, continue to make its own decisions in taking or not taking action
under or based upon this Agreement, any related agreement or any document
furnished hereunder or thereunder.

                                   ARTICLE X

                                 Miscellaneous

         SECTION 10.1.        Notices.  Except in the case of notices and other
communications expressly permitted to be given by telephone, all notices and
other communications provided for herein shall be in writing and shall be
delivered by hand or overnight courier service, mailed by certified or
registered mail or sent by telecopy, as follows:

         (a)     if to Borrower, to:

                          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:

                          Manager, Banking and Cash Management
                          Apache Corporation
                          2000 Post Oak Boulevard, Suite 100
                          Houston, Texas  77056-4400
                          Telephone:       (713) 296-6642
                          Facsimile:       (713) 296-6477

                 and with copy to:

                          Vice President and General Counsel





                                       46
<PAGE>   52


                          Apache Corporation
                          2000 Post Oak Boulevard, Suite 100
                          Houston, Texas  77056-4400
                          Telephone:       (713) 296-6204
                          Facsimile:       (713) 296-6458

         (b)     if to the Global Administrative Agent, to:

                          The Chase Manhattan Bank
                          Loan & Agency Services Group
                          One Chase Manhattan Plaza
                          8th Floor
                          New York, New York 10081
                          Attention:       Vincent Siino
                          Telephone:       (212) 552-7423
                          Facsimile:       (212) 552-5777

                 with a copy to:

                          The Chase Manhattan Bank
                          707 Travis, 5 TCB N
                          Houston, Texas 77002
                          Attention:       Peter Licalzi
                          Telephone:       (713) 216-8870
                          Facsimile:       (713) 216-8869

         (c)     if to the Australian Administrative Agent, to:

                          Citisecurities Limited (ACN 008 489 610)
                          1 Margaret Street
                          Sydney, NSW 2000
                          Australia
                          Attention:       Celle Raguine
                          Telephone:       (02) 9239 9860
                          Facsimile:       (02) 9262 2520

                 with a copy to:

                          Citibank, N.A.
                          Level 26
                          101 Collins Street





                                       47
<PAGE>   53


                          Melbourne, VIC 3000
                          Attention:       Mr. Damian Berry
                          Telephone:       (03) 9653-7357
                          Facsimile:       (03) 9653 7301

         (d)     if to any other Lender, to it at its address (or telecopy
number) provided to the Global Administrative Agent, the Australian
Administrative Agent and Borrower or as set forth in its Administrative
Questionnaire.

Any party hereto may change its address or telecopy number for notices and
other communications hereunder by notice to the other parties hereto.  All
notices and other communications given to any party hereto in accordance with
the provisions of this Agreement shall be deemed to have been given on the date
of receipt.

         SECTION 10.2.        Waivers; Amendments.

         (a)     No failure or delay by the Global Administrative Agent, the
Australian Administrative Agent or any Lender in exercising any right or power
hereunder shall operate as a waiver thereof, nor shall any single or partial
exercise of any such right or power, or any abandonment or discontinuance of
steps to enforce such a right or power, preclude any other or further exercise
thereof or the exercise of any other right or power.  The rights and remedies
of the Global Administrative Agent, the Australian Administrative Agent and the
Lenders hereunder are cumulative and are not exclusive of any rights or
remedies that they would otherwise have.  No waiver of any provision of this
Agreement or consent to any departure by Borrower therefrom shall in any event
be effective unless the same shall be permitted by paragraph (b) of this
Section, and then such waiver or consent shall be effective only in the
specific instance and for the purpose for which given.  Without limiting the
generality of the foregoing, the making of a Loan shall not be construed as a
waiver of any Default, regardless of whether the Global Administrative Agent,
the Australian Administrative Agent or any Lender may have had notice or
knowledge of such Default at the time.

         (b)     Any of the Combined Loan Documents or any provision thereof
may be waived, amended or modified pursuant to an agreement or agreements in
writing entered into by Borrower and the Combined Required Lenders or by
Borrower and the Global Administrative Agent and the Australian Administrative
Agent with the consent of the Combined Required Lenders; provided that the same
waiver, amendment or modification is requested by Parent in connection with
each of the Combined Credit Agreements; and provided further that no such
agreement shall amend, modify or otherwise affect the rights or duties of (i)
the Lenders described in the first proviso of Section 10.2(c) without the prior
written consent of each Lender affected thereby and (ii) the Global
Administrative Agent or the Australian Administrative Agent without the prior
written consent of the Global Administrative Agent or the Australian
Administrative Agent, respectively.





                                       48
<PAGE>   54


         (c)     Except as provided for in Section 10.2(b) above, neither this
Agreement nor any provision hereof may be waived, amended or modified except
pursuant to an agreement or agreements in writing entered into by Borrower and
the Required Lenders or by Borrower and the Global Administrative Agent and the
Australian Administrative Agent with the consent of the Required Lenders;
provided that no such agreement shall (i) increase the Commitment of any Lender
or the Commitments without the written consent of such Lender or each Lender,
respectively, (ii) reduce the principal amount of any Loan or reduce the rate
of interest thereon, or reduce any fees payable hereunder, without the written
consent of each Lender affected thereby, (iii) postpone the scheduled date of
payment of the principal amount of any Loan, or any interest thereon, or any
fees payable hereunder, or reduce the amount of, waive or excuse any such
payment, or postpone the scheduled date of expiration of any Commitment,
without the written consent of each Lender affected thereby, (iv) change
Section 2.17(b) or (c) in a manner that would alter the pro rata sharing of
payments required thereby, without the written consent of each Lender, or (v)
change any of the provisions of this Section or the definition of "Required
Lenders" or any other provision hereof specifying the number or percentage of
Lenders required to waive, amend or modify any rights hereunder or make any
determination or grant any consent hereunder, without the written consent of
each Lender; provided further that no such agreement shall amend, modify or
otherwise affect the rights or duties of the Global Administrative Agent or the
Australian Administrative Agent hereunder without the prior written consent of
the Global Administrative Agent or the Australian Administrative Agent,
respectively.

         SECTION 10.3.        Expenses; Indemnity; Damage Waiver.

         (a)     Borrower, jointly and severally, shall pay (i) all reasonable
out-of-pocket expenses incurred by the Agents and their Affiliates, including
the reasonable fees, charges and disbursements of counsel for the Agents, in
connection with the syndication of the credit facilities provided for herein,
the preparation and administration of this Agreement or any amendments,
modifications or waivers of the provisions hereof (whether or not the
transactions contemplated hereby or thereby shall be consummated) and (ii) all
reasonable out-of-pocket expenses incurred by the Agents or any Lender,
including the fees, charges and disbursements of any counsel for the Agents or
any Lender, in connection with the enforcement or protection of its rights in
connection with this Agreement, including its rights under this Section, or in
connection with the Loans made hereunder, including all such out-of-pocket
expenses incurred during any workout, restructuring or negotiations in respect
of such Loans or this Agreement.

         (b)     Borrower, jointly and severally, shall indemnify the Agents
and each Lender, and each Related Party of any of the foregoing Persons (each
such Person being called an "Indemnitee") against, and hold each Indemnitee
harmless from, any and all losses, claims, damages, liabilities and related
expenses, including the reasonable fees, charges and disbursements of any
counsel (or a solicitor and his own client basis) for any Indemnitee, incurred
by or asserted against any Indemnitee arising out of, in connection with, or as
a result of (i) the execution or





                                       49
<PAGE>   55


delivery of this Agreement or any agreement or instrument contemplated hereby,
the performance by the parties hereto of their respective obligations hereunder
or the consummation of the Transactions or any other transactions contemplated
hereby, (ii) any Loan or the actual or proposed use of the proceeds therefrom,
(iii) any actual or alleged presence or release of Hazardous Materials on or
from any property owned or operated by Borrower or any of its Subsidiaries, or
any Environmental Liability related in any way to Borrower or any of its
Subsidiaries, or (iv) any actual or prospective claim, litigation,
investigation or proceeding relating to any of the foregoing, whether based on
contract, tort or any other theory and regardless of whether any Indemnitee is
a party thereto; provided that such indemnity shall not, as to any Indemnitee,
be available to the extent that such losses, claims, damages, liabilities or
related expenses (i) resulted from the gross negligence or willful misconduct
of such Indemnitee or (ii) arise in connection with any issue in litigation
commenced by Borrower or any of its Subsidiaries against any Indemnitee for
which a final judgment is entered in favor of Borrower or any of its
Subsidiaries against such Indemnitee.

         (c)     To the extent that Borrower fails to pay any amount required
to be paid by it to the Global Administrative Agent or the Australian
Administrative Agent under paragraph (a) or (b) of this Section, each Lender
severally agrees to pay to the Global Administrative Agent or the Australian
Administrative Agent, such Lender's Applicable Percentage (determined as of the
time that the applicable unreimbursed expense or indemnity payment is sought)
of such unpaid amount; provided that the unreimbursed expense or indemnified
loss, claim, damage, liability or related expense, as the case may be, was
incurred by or asserted against the Global Administrative Agent or the
Australian Administrative Agent, respectively.

         (d)     To the extent permitted by applicable law, Borrower shall not
assert, and hereby waives, any claim against any Indemnitee, on any theory of
liability, for special, indirect, consequential or punitive damages (as opposed
to direct or actual damages) arising out of, in connection with, or as a result
of, this Agreement or any agreement or instrument contemplated hereby, the
Transactions or any Loan or the use of the proceeds thereof, except for any
such claim arising from such Indemnitee's gross negligence or willful
misconduct.

         (e)     All amounts due under this Section shall be payable not later
than thirty (30) days after written demand therefor.

         SECTION 10.4.        Successors and Transferees.

         (a)     The provisions of this Agreement shall be binding upon and
inure to the benefit of the parties hereto and their respective successors and
transferees permitted hereby, except that Borrower may not transfer any of its
rights or obligations hereunder without the prior written consent of each
Lender (and any attempted transfer by Borrower without such consent shall be
null and void).  Nothing in this Agreement, expressed or implied, shall be
construed to confer upon





                                       50
<PAGE>   56


any Person (other than the parties hereto, their respective successors and
transferees permitted hereby and, to the extent expressly contemplated hereby,
the Related Parties of each of the Global Administrative Agent, the Canadian
Administrative Agent and the Lenders) any legal or equitable right, remedy or
claim under or by reason of this Agreement.

         (b)     Any Lender may transfer to one or more bank or other entities
which are residents in Australia for purposes of the Income Tax Assessment Act
1936 (Cth) ("Substituting Lender") all or a portion of its rights and
obligations under this Agreement (including all or a portion of its Commitment
and the Loans at the time owing to it); provided  that (i) except in the case
of a transfer to a Lender or an Affiliate of a Lender, each of Borrower, the
Australian Administrative Agent and the Global Administrative Agent must give
their prior written consent to such transfer (which consent shall not be
unreasonably withheld), (ii) except in the case of a transfer to a Lender or an
Affiliate of a Lender or a transfer of the entire remaining amount of the
transferring Lender's Commitment, the amount of the Commitment of the
transferring Lender subject to each such transfer (determined as of the date
the Substitution Certificate with respect to such transfer is delivered to the
Australian Administrative Agent and the Global Administrative Agent) shall be
in increments of $1,000,000 and not less than $10,000,000 unless each of
Borrower, the Australian Administrative Agent and the Global Administrative
Agent otherwise consent, (iii) each partial transfer shall be made as a
transfer of a proportionate part of all the transferring Lender's rights and
obligations under this Agreement, (iv) the parties to each transfer shall
execute and deliver to the Australian Administrative Agent and the Global
Administrative Agent a Substitution Certificate, together with a processing and
recordation fee of $3,500 to the Australian Administrative Agent, and (v) the
Substituting Lender, if it shall not be a Lender, shall deliver to the
Australian Administrative Agent and the Global Administrative Agent an
Administrative Questionnaire; and provided further that any consent of Borrower
otherwise required under this paragraph shall not be required if an Event of
Default under Section 8.1 or has occurred and is continuing.  Subject to
acceptance and recording thereof pursuant to paragraph (d) of this Section,
from and after the effective date specified in each Substitution Certificate
the Substituting Lender thereunder shall be a party hereto and, to the extent
of the interest transferred by such Substitution Certificate, have the rights
and obligations of a Lender under this Agreement, and the transferring Lender
thereunder shall, to the extent of the interest transferred by such
Substitution Certificate, be released from its obligations under this Agreement
(and, in the case of a Substitution Certificate covering all of the
transferring Lender's rights and obligations under this Agreement, such Lender
shall cease to be a party hereto but shall continue to be entitled to the
benefits of Sections 2.14, 2.15, 2.16, 2.17, 2.19 and 10.3).  Any transfer by a
Lender of rights or obligations under this Agreement that does not comply with
this paragraph shall be treated for purposes of this Agreement as a sale by
such Lender of a participation in such rights and obligations in accordance
with paragraph (e) of this Section.

         (c)     The Australian Administrative Agent and the Global
Administrative Agent, acting for this purpose as an agent of Borrower, shall
maintain at one of its offices in Sydney, Australia,





                                       51
<PAGE>   57


and The City of New York, respectively, a copy of each Substitution Certificate
delivered to it and a register for the recordation of the names and addresses
of the Lenders, and the Commitment of, and principal amount of the Loans owing
to, each Lender pursuant to the terms hereof from time to time (the
"Register").  The entries in the Register shall be conclusive, and Borrower,
the Australian Administrative Agent, the Global Administrative Agent and the
Lenders may treat each Person whose name is recorded in the Register pursuant
to the terms hereof as a Lender hereunder for all purposes of this Agreement,
notwithstanding notice to the contrary.  The Register shall be available for
inspection by Borrower and any Lender, at any reasonable time and from time to
time upon reasonable prior notice.

         (d)     Upon its receipt of a duly completed Substitution Certificate
executed by an transferring Lender and a Substituting Lender, the Substituting
Lender's completed Administrative Questionnaire (unless the Substituting Lender
shall already be a Lender hereunder), the processing and recordation fee
referred to in paragraph (b) of this Section and any written consent to such
transfer required by paragraph (b) of this Section, the Australian
Administrative Agent and the Global Administrative Agent shall accept such
Substitution Certificate and record the information contained therein in the
Register and will provide prompt written notice to Borrower of the
effectiveness of such Substitution Certificate.  No transfer shall be effective
for purposes of this Agreement unless it has been recorded in the Register as
provided in this paragraph.

         (e)     Any Lender may, without the consent of Borrower, the
Australian Administrative Agent or the Global Administrative Agent, sell
participations to one or more banks or other entities which are resident in
Australia for purposes of the Income Tax Assessment Act 1936 (Cth) (a
"Participant") in all or a portion of such Lender's rights and obligations
under this Agreement (including all or a portion of its Commitment and the
Loans owing to it); provided that (i) such Lender's obligations under this
Agreement shall remain unchanged, (ii) such Lender shall remain solely
responsible to the other parties hereto for the performance of such
obligations, (iii) Borrower, the Australian Administrative Agent, the Global
Administrative Agent and the other Lenders shall continue to deal solely and
directly with such Lender in connection with such Lender's rights and
obligations under this Agreement, and (iv) if such Participant is not a Lender
or an Affiliate of a Lender, such Lender shall have given notice to Borrower of
the name of the Participant and the amount of such participation.  Any
agreement or instrument pursuant to which a Lender sells such a participation
shall provide that such Lender shall retain the sole right to enforce this
Agreement and to approve any amendment, modification or waiver of any provision
of this Agreement; provided that such agreement or instrument may provide that
such Lender will not, without the consent of the Participant, agree to any
amendment, modification or waiver described in the first proviso to Section
10.2(c) that affects such Participant.  Subject to paragraph (f) of this
Section, Borrower agrees that each Participant shall be entitled to the
benefits of Sections 2.14, 2.15 and 2.16 to the same extent as if it were a
Lender and had acquired its interest by transfer pursuant to paragraph (b) of
this Section.  To the extent permitted by law, each Participant also shall be
entitled to the benefits of Section 10.8 as though it were a Lender,





                                       52
<PAGE>   58


provided such Participant agrees to be subject to Section 2.17(c) as though it
were a Lender.  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.

         (f)     A Participant shall not be entitled to receive any greater
payment under Section 2.14, 2.15 or 2.16 than the applicable Lender would have
been entitled to receive with respect to the participation sold to such
Participant, unless Borrower shall expressly agree otherwise in writing.  A
Participant that would be a Foreign Lender if it were a Lender shall not be
entitled to the benefits of Section 2.16 unless Borrower is notified of the
participation sold to such Participant and such Participant agrees, for the
benefit of Borrower, to comply with Section 2.16(e) as though it were a Lender.

         SECTION 10.5.        Survival.  All covenants, agreements,
representations and warranties made by Borrower herein and in the certificates
or other instruments delivered in connection with or pursuant to this Agreement
shall be considered to have been relied upon by the other parties hereto and
shall survive the execution and delivery of this Agreement and the making of
any Loans, regardless of any investigation made by any such other party or on
its behalf and notwithstanding that the Australian Administrative Agent, the
Global Administrative Agent or any Lender may have had notice or knowledge of
any Default or incorrect representation or warranty at the time any credit is
extended hereunder, and shall continue in full force and effect as long as the
principal of or any accrued interest on any Loan or any fee or any other amount
payable under this Agreement is outstanding and unpaid and so long as the
Commitments have not expired or terminated.  The provisions of Sections 2.14,
2.15, 2.16, 2.17, 2.19  and 10.3 and Article IX shall survive and remain in
full force and effect regardless of the consummation of the transactions
contemplated hereby, the repayment of the Loans, the expiration or termination
of the Commitments or the termination of this Agreement or any provision
hereof.

         SECTION 10.6.        Counterparts; Integration; Effectiveness.  This
Agreement may be executed in counterparts (and by different parties hereto on
different counterparts), each of which shall constitute an original, but all of
which when taken together shall constitute a single contract.  This Agreement
and any separate letter agreements with respect to fees payable to the
Australian Administrative Agent constitute the entire contract among the
parties relating to the subject matter hereof and supersede any and all
previous agreements and understandings, oral or written, relating to the
subject matter hereof.  Except as provided in Section 4.1, this Agreement shall
become effective when it shall have been executed by the Australian
Administrative Agent and the Global Administrative Agent and when the
Australian Administrative Agent and the Global Administrative Agent shall have
received counterparts hereof which, when taken together, bear the signatures of
each of the other parties hereto, and thereafter shall be binding upon and
inure to the benefit of the parties hereto and their respective successors and
assigns.  Delivery of an executed counterpart of a signature page of this
Agreement by telecopy shall be effective as delivery of a manually executed
counterpart of this Agreement.





                                       53
<PAGE>   59


         SECTION 10.7.        Severability.  Any provision of this Agreement
held to be invalid, illegal or unenforceable in any jurisdiction shall, as to
such jurisdiction, be ineffective to the extent of such invalidity, illegality
or unenforceability without affecting the validity, legality and enforceability
of the remaining provisions hereof; and the invalidity of a particular
provision in a particular jurisdiction shall not invalidate such provision in
any other jurisdiction.

         SECTION 10.8.        Right of Setoff.  If an Event of Default shall
have occurred and be continuing and the Obligations of Borrower shall have been
accelerated, each Lender and each of its Affiliates is hereby authorized at any
time and from time to time, to the fullest extent permitted by law, to set off
and apply any and all deposits (general or special, time or demand, provisional
or final) at any time held and other obligations at any time owing by such
Lender or Affiliate to or for the credit or the account of Borrower against any
of and all the obligations of Borrower now or hereafter existing under this
Agreement held by such Lender, irrespective of whether or not such Lender shall
have made any demand under this Agreement and although such obligations may be
unmatured.  The rights of each Lender under this Section are in addition to
other rights and remedies (including other rights of setoff) which such Lender
may have.

         SECTION 10.9.        GOVERNING LAW; JURISDICTION; CONSENT TO SERVICE
OF PROCESS.

         (a)     THIS AGREEMENT AND THE OTHER 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.

         (b)     BORROWER HEREBY IRREVOCABLY AND UNCONDITIONALLY SUBMITS, FOR
ITSELF AND ITS PROPERTY, TO THE NONEXCLUSIVE JURISDICTION OF THE COURTS OF THE
STATE OF NEW SOUTH WALES, AND ANY APPELLATE COURT FROM ANY THEREOF, IN ANY
ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT, OR FOR
RECOGNITION OR ENFORCEMENT OF ANY JUDGMENT, AND EACH OF THE PARTIES HERETO
HEREBY IRREVOCABLY AND UNCONDITIONALLY AGREES THAT ALL CLAIMS IN RESPECT OF ANY
SUCH ACTION OR PROCEEDING MAY BE HEARD AND DETERMINED IN SUCH COURTS OF THE
STATE OF NEW SOUTH WALES.  EACH OF THE PARTIES HERETO AGREES THAT A FINAL
JUDGMENT IN ANY SUCH ACTION OR PROCEEDING SHALL BE CONCLUSIVE AND MAY BE
ENFORCED IN OTHER JURISDICTIONS BY SUIT ON THE JUDGMENT OR IN ANY OTHER MANNER
PROVIDED BY LAW.  NOTHING IN THIS AGREEMENT SHALL AFFECT ANY RIGHT THAT THE
AGENTS OR ANY LENDER MAY OTHERWISE HAVE TO BRING ANY ACTION OR PROCEEDING
RELATING TO THIS





                                       54
<PAGE>   60


AGREEMENT AGAINST BORROWER OR ITS PROPERTIES IN THE COURTS OF ANY JURISDICTION.

         (c)     BORROWER HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES, TO THE
FULLEST EXTENT IT MAY LEGALLY AND EFFECTIVELY DO SO, ANY OBJECTION WHICH IT MAY
NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY SUIT, ACTION OR PROCEEDING
ARISING OUT OF OR RELATING TO THIS AGREEMENT IN ANY COURT REFERRED TO IN
PARAGRAPH (b) OF THIS SECTION.  EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY
WAIVES, TO THE FULLEST EXTENT PERMITTED BY LAW, THE DEFENSE OF AN INCONVENIENT
FORUM TO THE MAINTENANCE OF SUCH ACTION OR PROCEEDING IN ANY SUCH COURT.

         (d)     EACH PARTY TO THIS AGREEMENT IRREVOCABLY CONSENTS TO SERVICE
OF PROCESS BY REGISTERED MAIL, POSTAGE PREPAID, OR BY PERSONAL SERVICE WITHIN
OR WITHOUT THE STATE OF NEW SOUTH WALES.  NOTHING IN THIS AGREEMENT WILL AFFECT
THE RIGHT OF ANY PARTY TO THIS AGREEMENT TO SERVE PROCESS IN ANY OTHER MANNER
PERMITTED BY LAW.

         SECTION 10.10.       Headings.  Article and Section headings and the
Table of Contents used herein are for convenience of reference only, are not
part of this Agreement and shall not affect the construction of, or be taken
into consideration in interpreting, this Agreement.

         SECTION 10.11.       Confidentiality.  Each of the Agents and the
Lenders agrees to maintain the confidentiality of the Information (as defined
below), except that Information may be disclosed (a) to its and its Affiliates'
directors, officers, employees and agents, including accountants, legal counsel
and other advisors (it being understood that the Persons to whom such
disclosure is made will be informed of the confidential nature of such
Information and instructed to keep such Information confidential), (b) to the
extent requested by any regulatory authority, (c) to the extent required by
applicable laws or regulations or by any subpoena or similar legal process, (d)
to any other party to this Agreement, (e) in connection with the exercise of
any remedies hereunder or any suit, action or proceeding relating to this
Agreement or the enforcement of rights hereunder, (f) subject to an agreement
containing provisions substantially the same as those of this Section, to any
assignee of or Participant in, or any prospective assignee of or Participant
in, any of its rights or obligations under this Agreement, (g) with the consent
of Borrower or (h) to the extent such Information (A) becomes publicly
available other than as a result of a breach of this Section by any Person or
(B) becomes available to any Agent or any Lender on a nonconfidential basis
from a source other than Borrower or any Person obligated to maintain the
confidentiality of such Information.  Prior to disclosing any Information under
clause (c) above, the Agent or Lender required or asked to make such disclosure
shall make a good faith effort to give Borrower prior notice of such proposed
disclosure to permit Borrower to attempt to obtain a protective order or other
appropriate injunctive relief.  For the purposes of this Section, "Information"
means all





                                       55
<PAGE>   61


information received from Borrower relating to Borrower or its business, other
than any publicly available information and such information that is available
to any Agent or any Lender on a nonconfidential basis prior to disclosure by
Borrower; provided that, in the case of information received from Borrower
after the date hereof, such information is clearly identified at the time of
delivery as confidential.  Any Person required to maintain the confidentiality
of Information as provided in this Section shall be considered to have complied
with its obligation to do so if such Person has exercised the same degree of
care to maintain the confidentiality of such Information as such Person would
accord to its own confidential information.

         SECTION 10.12.       Interest Rate Limitation.  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 Borrower to a 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 Lender or Agent limiting rates of interest which may be
charged or collected by such Lender or Agent.  Accordingly, if the transactions
contemplated hereby would be illegal, unenforceable, usurious or criminal under
laws applicable to a Lender or Agent (including the laws of any jurisdiction
whose laws may be mandatorily applicable to such Lender or Agent
notwithstanding anything to the contrary in this Agreement or any other Loan
Document but subject to Section 2.12 hereof) then, in that event,
notwithstanding anything to the contrary in this Agreement or any other Loan
Document, it is agreed as follows:

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

                 (ii)         the aggregate of all consideration which
         constitutes interest under applicable law that is 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 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 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 Borrower by such Lender or Agent (or, if such
         consideration shall have been paid in full, such excess refunded to
         Borrower);

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





                                       56
<PAGE>   62


                 (iv)         if at any time the interest provided pursuant to
         this Section or any other clause of this Agreement or any other Loan
         Document, together with any other fees or compensation payable
         pursuant to this Agreement or any other Loan Document and deemed
         interest under laws applicable to such 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 Lender
         or Agent pursuant to this Agreement shall be limited, notwithstanding
         anything to the contrary in this Agreement or any other 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 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 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 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), 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; and

                 (v)          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 Loan Documents) by such Lender or Agent would cause such
         Lender to charge Borrower a criminal rate of interest, the 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 Lender or Agent, as applicable, and if
         received such affected Lender or Agent will return such funds to
         Borrower so that the rate of interest paid by Borrower shall not
         exceed a criminal rate of interest from the date this Agreement was
         entered into.

         SECTION 10.13.       NO ORAL AGREEMENTS.  THIS WRITTEN AGREEMENT AND
THE OTHER 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]





                                       57
<PAGE>   63


         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed by their respective authorized officers as of the day and year
first above written.


                                     APACHE ENERGY LIMITED (ACN 009          
                                     301 964)                                
                                                                             
                                                                             
                                     By: /S/ Apache Energy Limited           
                                         --------------------------------------
                                     Name:   Matthew W. Dundrea              
                                     Title:  Treasurer              
                                                                             
                                                                             
                                                                             
                                     APACHE OIL AUSTRALIA PTY.               
                                     LIMITED (ACN 050 611 688)               
                                                                             
                                                                             
                                     By: /S/ Apache Oil Australia Pty. Limited  
                                         --------------------------------------
                                     Name:   Matthew W. Dundrea              
                                     Title:  Treasurer              
                                                                             
                                                                             



                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 1
<PAGE>   64



                                      THE CHASE MANHATTAN BANK, as            
                                      Global Administrative Agent             
                                                                              
                                                                              
                                      By: /S/ The Chase Manhattan Bank        
                                          -------------------------------------
                                      Name:
                                      Title:





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 2
<PAGE>   65



                                     MORGAN GUARANTY TRUST                
                                     COMPANY, as Global Documentation     
                                     Agent                                
                                                                          
                                                                          
                                     By: /S/ Morgan Guaranty Trust Company
                                         --------------------------------------
                                     Name:
                                     Title:





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 3
<PAGE>   66



                                     CITISECURITIES LIMITED (ACN 008           
                                     489 610), as Australian Administrative 
                                     Agent                     
                                                                               
                                                                               
                                     By: /S/ Citisecurities Limited            
                                         --------------------------------------
                                     Name:
                                     Title:





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 4
<PAGE>   67



                                 BANK OF AMERICA NATIONAL  
                                 TRUST AND SAVINGS ASSOCIATION,                 
                                 SYDNEY BRANCH (ARBN 064 874 531),
                                 as Australian Documentation Agent          
                                                                        
                                                                        
                                 By: /S/ Bank of America National Trust 
                                         and Savings Association, Sydney Branch
                                     ------------------------------------------

                                 Name:
                                 Title:





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 5
<PAGE>   68



                                     THE CHASE MANHATTAN BANK              
                                     (ARBN 074 112 011), as Australian     
                                     Syndication Agent                     
                                                                           
                                                                           
                                     By: /S/ The Chase Manhattan Bank      
                                         --------------------------------------
                                     Name:
                                     Title:





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 6
<PAGE>   69



                                     CITIBANK, N.A. (ARBN 072 814 058), as 
                                     Lender


                                     By: /S/ Citibank, N.A.
                                         --------------------------------------
                                     Name:
                                     Title:





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 7
<PAGE>   70



                                     BANK OF AMERICA NATIONAL                  
                                     TRUST AND SAVINGS ASSOCIATION,            
                                     SYDNEY BRANCH (ARBN 064 874 531),         
                                     as Lender                                 
                                                                               
                                                                               
                                     By: /S/ Bank of America National Trust    
                                             and Savings Association,          
                                             Sydney Branch                     
                                         --------------------------------------
                                     Name:
                                     Title:





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 8
<PAGE>   71



                                     THE CHASE MANHATTAN BANK            
                                     (ARBN 074 112 011), as Lender       
                                                                         
                                                                         
                                     By: /S/ The Chase Manhattan Bank    
                                         --------------------------------------
                                     Name:
                                     Title:





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 9
<PAGE>   72


                                     MORGAN GUARANTY TRUST                   
                                     COMPANY OF NEW YORK, SYDNEY             
                                     BRANCH (ARBN 065 326 356), as Lender    
                                                                             
                                                                             
                                     By: /S/ Morgan Guaranty Trust Company   
                                             of New York, Sydney Branch      
                                         --------------------------------------
                                     Name:
                                     Title:





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 10
<PAGE>   73


                                     THE FIRST NATIONAL BANK OF                
                                     CHICAGO (ARBN 065 752 918), as Lender     
                                                                               
                                                                               
                                     By: /S/ The First National Bank of Chicago
                                         --------------------------------------
                                     Name:
                                     Title:





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 11
<PAGE>   74


                                     ROYAL BANK OF CANADA (ARBN 076    
                                     940 880), as Lender               
                                                                       
                                                                       
                                     By: /S/ Royal Bank of Canada      
                                         --------------------------------------
                                     Name:
                                     Title:





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 12
<PAGE>   75


                                         BANQUE NATIONALE DE PARIS 
                                         (ARBN 000 000 117), as Lender


SIGNED on behalf of                 )
                                    )
- ------------------------------------)
by its attorney in the              )
presence of:                        )    /S/ Banque Nationale de Paris
                                         --------------------------------------
                                         Attorney

- ------------------------------------     --------------------------------------
Witness                                  Print Name

- ------------------------------------
Print Name

                                         BNP PACIFIC (AUSTRALIA) LIMITED 
                                         (ACN 000 226 666), as Lender


SIGNED on behalf of                 )
                                    )
- ------------------------------------)
by its attorney in the              )
presence of:                        )    /S/ BNP Pacific (Australia) Limited
                                         --------------------------------------
                                         Attorney

- ------------------------------------     --------------------------------------
Witness                                  Print Name

- ------------------------------------
Print Name





                [SIGNATURE PAGE TO AUSTRALIAN CREDIT AGREEMENT]

                                     S - 13

<PAGE>   1
                               [LETTERHEAD]

CONTACTS:

(MEDIA):        JOHN KELSO              (713/296-6155)
                TONY LENTINI            (713/296-6227)
(INVESTOR):     ROBERT DYE              (713/296-6662)

(WEBSITE):      APACHECORP.COM

                                                        FOR IMMEDIATE RELEASE   

                APACHE REPLACES $1 BILLION CREDIT FACILITY,
                     EXPANDS COMMERCIAL PAPER PROGRAM

        Houston, June 24, 1997--Apache Corporation (NYSE: APA) today announced
that it has replaced its $1 billion borrowing-base credit facility with a new
billion-dollar global corporate credit facility and expanded its commercial
paper program to $700 million from $300 million.
        The new global credit facility provides Apache with greater borrowing
capacity, increased financial flexibility and less restrictive covenants, while
lowering its all-in borrowing costs by 7-1/2 basis points.  Terms reflect
Apache's stronger credit ratings.  The new facility was led by Chase Manhattan
and arranged by Chase Securities and J. P. Morgan Securities.
        The new credit arrangement comprises three separate bank facilities:  a
$700 million credit commitment in the United States; a $175 million facility in
Australia; and a $125 million credit line in Canada.  The new facilities enable
Apache to draw on its full $1 billion credit line without restrictions tied to
periodic revaluations of the company's reserves.
        Apache increased the size of its commercial paper program to provide
access to additional low-cost, short-term funds.
        Apache is a large oil and gas independent with operations in North
America, Egypt, Western Australia, Poland, The People's Republic of China,
Indonesia and the Ivory Coast.

                                   -end



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