================================================================================
                                                                Exhibit 10.21



                                CREDIT AGREEMENT


                           GREY WOLF EXPLORATION INC.
                                   as Borrower


                                     - and -


                       MIRANT CANADA ENERGY CAPITAL, LTD.
                                    as Lender




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








                                December 20, 2001





                                TABLE OF CONTENTS
                                                                      Page




                                    Article 1
                        DEFINITIONS AND ACCOUNTING TERMS

1.1      Defined Terms........................................................1
1.2      Use of Defined Terms................................................18
1.3      Cross-References....................................................18
1.4      Accounting and Financial Determinations.............................19
1.5      Statutes, Regulations and Rules.....................................19
1.6      Monetary References.................................................19
1.7      Schedules and Exhibits..............................................19
                                    Article 2
                         COMMITMENT AND LOAN PROCEDURES

2.1      Commitment..........................................................19
2.2      Maximum Commitment Amount and Commitment Amount.....................20
2.3      Loan Procedure......................................................20
2.4      Records  21
                                    Article 3
                   REPAYMENTS, PREPAYMENTS, INTEREST AND FEES

3.1      Repayments and Prepayments..........................................21
3.2      Refinancing.........................................................22
3.3      Interest Provisions.................................................22
3.4      Collateral Account..................................................23
3.5      Closing Fee.........................................................25
3.6      Engineering Fee.....................................................25
                                    Article 4
                           TAXES AND OTHER PROVISIONS

4.1      Payments, Computations, etc.........................................25
4.2      Setoff   ...........................................................25
4.3      Right of First Refusal - Proposed Undertakings......................26
4.4      Right of First Refusal-Proposed Non-Subject Interest Undertaking....27
4.5      Use of Proceeds.....................................................28
                                    Article 5
                               CONDITIONS TO LOANS

5.1      Initial Loan........................................................29
5.2      Resolutions, etc....................................................29
5.3      Override Royalty Agreement..........................................29
5.4      Security 29
5.5      Release and Discharge...............................................30
                                       i

5.6      After-Acquired Property.............................................30
5.7      Memorandum of Purchase Contracts....................................30
5.8      Opinion of Counsel..................................................30
5.9      Certified Copy of Farmout Amending Agreement........................30
5.10     Development Plan and Schedules......................................30
5.11     Evidence of Insurance...............................................30
5.12     Approvals...........................................................31
5.13     Compliance with Loan Documents......................................31
5.14     No Default..........................................................31
5.15     Engineering.........................................................31
5.16     Environmental.......................................................31
5.17     Officer's Certificate...............................................31
5.18     Release of Liens....................................................31
5.19     Closing Fees, Expenses, etc.........................................32
5.20     ISDA Master Agreement...............................................32
5.21     Documents...........................................................32
5.22     Other Legal Matters.................................................32
5.23     All Loans...........................................................32
                                    Article 6
                         REPRESENTATIONS AND WARRANTIES

6.1      Representations.....................................................33
6.2      Organization........................................................33
6.3      Due Authorization, Non-Contravention, etc...........................33
6.4      Government Approval, Regulation, etc................................34
6.5      Validity, etc.......................................................34
6.6      Financial Information...............................................34
6.7      No Material Adverse Change..........................................34
6.8      Litigation, Labor Controversies, etc................................34
6.9      Subsidiaries........................................................34
6.10     Borrower's Shares...................................................34
6.11     Subject Interests...................................................34
6.12     Oil and Gas Leases..................................................35
6.13     Preferential Rights.................................................35
6.14     Balancing and Take-or-Pay Contracts.................................35
6.15     Production Requirements.............................................36
6.16     Facilities..........................................................36
6.17     Broker's Fees.......................................................36
6.18     Taxes    ...........................................................36
                                       ii

6.19     Compliance with Laws................................................36
6.20     Environmental Warranties............................................36
6.21     Accuracy of Information.............................................37
6.22     No Prohibition on Perfection........................................38
6.23     Solvency 38
6.24     Insurance...........................................................38
6.25     No Default..........................................................38
6.26     Farmout Lands.......................................................38
                                    Article 7
                              AFFIRMATIVE COVENANTS

7.1      Affirmative Covenants...............................................38
7.2      Punctual Payment....................................................38
7.3      Financial Information, Reports, Notices, etc........................38
7.4      Gathering and Transportation and Other Services.....................42
7.5      Collateral Coverage Deficiency or Collateral Coverage Default.......43
7.6      Use of Proceeds.....................................................43
7.7      Joint Operating Agreement...........................................43
7.8      Compliance with Laws................................................43
7.9      Production-Related Expenses and Taxes...............................44
7.10     Operation of Subject Interests......................................44
7.11     Development Plan....................................................45
7.12     Insurance...........................................................45
7.13     Accounting Principles...............................................46
7.14     Books and Records; Inspections......................................46
7.15     Environmental Covenant..............................................46
7.16     Board of Directors Meetings.........................................47
7.17     Hedging Agreements..................................................47
7.18     Protection of Security..............................................47
7.19     Grant Fixed Charge Security.........................................47
7.20     Further Assurances..................................................48
7.21     Override Records....................................................49
7.22     Title Deficiencies..................................................49
7.23     Further Due Diligence...............................................49
                                    Article 8
                               NEGATIVE COVENANTS

8.1      Negative Covenants..................................................50
8.2      Business Activities.................................................50
                                      iii

8.3      Indebtedness........................................................50
8.4      Liens    ...........................................................50
8.5      Restricted Payments, etc............................................50
8.6      Capital Expenditures................................................51
8.7      Accounts Receivable.................................................51
8.8      Rental Obligations..................................................51
8.9      Take-or-Pay Contracts...............................................51
8.10     Consolidation, Merger, etc..........................................51
8.11     Asset Dispositions, etc.............................................51
8.12     Abandonment of Wellbores or Conduct of Certain Operations...........52
8.13     Grant Liens, Mortgage or Transfer or Resignation as Operator
         of any Subject Interest.............................................52
8.14     Modification of Certain Agreements..................................52
8.15     Pension Plans.......................................................52
8.16     Other Agreements....................................................53
8.17     No Subsidiaries.....................................................53
8.18     No Other Hedging Agreements.........................................53
8.19     Transactions with Affiliates........................................53
8.20     Negative Pledges, Restrictive Agreements, etc.......................53
8.21     Limitations on Certain Financing Leases and Sale and
         Leaseback Transactions..............................................53
8.22     Dissemination of Information........................................54
8.23     Subject Interests...................................................54
                                    Article 9
                                EVENTS OF DEFAULT

9.1      Events of Default...................................................54
         (a)      Non-Payment of Obligations.................................54
         (b)      Breach of Warranty.........................................54
         (c)      Non-Performance of Certain Covenants and Obligations.......54
         (d)      Collateral Coverage Default................................54
         (e)      Default on Other Indebtedness..............................55
         (f)      Judgments         .........................................55
         (g)      Control of Borrower........................................55
         (h)      Bankruptcy, Insolvency.....................................55
         (i)      Winding-Up        .........................................56
         (j)      Impairment of Security, etc................................56
         (k)      Cumulative Reimbursable Expenses Amount....................56
         (l)      Material Adverse Change....................................56
         (m)      Dissemination of Information...............................56
                                       iv

9.2      Remedies of Lender..................................................56
                                   Article 10
                           OVERRIDE ROYALTY AGREEMENT

10.1     Override Royalty Agreement..........................................60
                                   Article 11
                    HYDROCARBON PURCHASE TERMS AND PROVISIONS

11.1     General.............................................................60
11.2     Marketing Subject Hydrocarbons to Third Persons.....................61
                                   Article 12
                            MISCELLANEOUS PROVISIONS

12.1     Waivers, Amendments, etc............................................61
12.2     Notices.............................................................61
12.3     Payment of Costs and Expenses.......................................62
12.4     Indemnification.....................................................62
12.5     Survival............................................................63
12.6     Inconsistency.......................................................64
12.7     Reimbursable Expenses...............................................64
12.8     Severability........................................................64
12.9     Headings............................................................64
12.10    Limitation on Liability.............................................64
12.11    Intentions of the Parties...........................................64
12.12    Governing Law; Entire Agreement.....................................64
12.13    Successors and Assigns..............................................64
12.14    Effect of Syndication...............................................65
12.15    Participations......................................................65
12.16    Maximum Rate of Return..............................................65
12.17    Waiver of Judgment Interest Act (Alberta)...........................66
12.18    Deemed Reinvestment Not Applicable..................................66
12.19    Confidentiality.....................................................66
12.20    Other Transactions..................................................66
12.21    Forum Selection and Consent to Jurisdiction.........................66
12.22    Waiver of Jury Trial................................................67
12.23    No Oral Agreements..................................................67
12.24    Execution in Counterparts, Effectiveness............................67
                                       v

                                       1


                                CREDIT AGREEMENT

This Credit Agreement dated as of December 20, 2001,

BETWEEN:

                           GREY WOLF EXPLORATION INC.,
           a corporation incorporated pursuant to the laws of Alberta,
                                   as Borrower


                                     - and -

                       MIRANT CANADA ENERGY CAPITAL, LTD.,
        a corporation incorporated pursuant to the laws of New Brunswick,
                                    as Lender

RECITALS

A.       Borrower is engaged directly in the business of acquiring, owning and
         operating certain oil and gas leasehold and other interests in Western
         Canada.

B.       Borrower desires to obtain the Commitment from Lender pursuant to which
         Loans, in a maximum aggregate principal amount of $150,000,000 and with
         a Commitment Amount as of the Effective Date of $40,000,000, will be
         made to Borrower from Lender prior to the Commitment Termination Date.

C.       Lender is willing, subject to the terms and conditions herein set forth
         to make Loans to Borrower pursuant to the Commitment.

D.       The Loan proceeds will be used (i) to repay existing Indebtedness, (ii)
         to develop the Subject Interests in accordance with the Development
         Plan, and (iii) for general business purposes and working capital
         purposes of Borrower consistent with the Development Plan and any other
         purposes as agreed by Lender and Borrower.

         NOW THEREFORE for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Parties agree as follows:

Article 1
                        DEFINITIONS AND ACCOUNTING TERMS

1.1      Defined Terms. The following terms when used in this Agreement,
         including its recitals, schedules and exhibits, shall, except where the
         context otherwise requires, have the following meanings (such meanings
         to be equally applicable to the singular and plural forms thereof):

         "Abraxas Amalgamation" means the amalgamation between Abraxas
         Acquisition Corporation and Borrower to be completed on or before
         January 1, 2002.

                                       2
         "Acceptable Proved Reserves" means Proved Reserves located in the
         Subject Interests that (i) have been evaluated by the Approved
         Independent Engineer and are included in the most recent Independent
         Engineering Report, (ii) are determined by Lender, in its sole and
         absolute discretion, to have satisfactory title, including Liens in
         favour of Lender and title opinions or other assurances of title
         satisfactory to Lender, if required by Lender (iii) are free of any
         Liens except for any Permitted Liens, and (iv) are covered by
         environmental reports, if required by Lender, which have been delivered
         to Lender and Lender has determined, in its reasonable discretion, that
         the results of such environmental reports are satisfactory.

         "Accountant" has the meaning set forth in Section 7.3(b).

         "Additional Development Program Option" has the meaning set forth in
         Section 4.3(b).

         "Affiliate" has the meaning attributed to it in the Business
         Corporations Act (Alberta).

         "Agreement" means, on any date, this Credit Agreement as originally in
         effect on the Effective Date and as thereafter from time to time
         amended, supplemented, amended and restated, or otherwise modified and
         in effect on such date.

         "Applicable Law" means with respect to any Person or matter, any
         federal, state, provincial, municipal, regional, tribal or local
         statute, law, code, rule, regulation, treaty, convention, application,
         order, decree, consent decree, injunction, directive, determination or
         other requirement (domestic, foreign or international and whether or
         not having the force of law) relating to such Person or matter and,
         where applicable, any interpretation thereof by a Governmental Agency
         having jurisdiction with respect thereto or charged with the
         administration or interpretation thereof.

         "Approvals" means each and every approval, authorization, license,
         permit, consent, variance, land use entitlement, franchise, agreement,
         filing or registration by or with any Governmental Agency or other
         Person necessary for all stages of acquiring, developing, operating,
         maintaining and abandoning Property, including the Subject Properties.

         "Approved Capital Expenditures" means, for purposes of calculating Net
         Cash Flow, capital expenditures specified in relation to a particular
         portion of the Subject Interests which are approved by Lender as part
         of the "PUD Capex (net)", "PDNP Capex (net)" and "Other Capital
         Expenditures (net)" sections, respectively, of the Development Plan and
         which only include the capital expenditures specified in relation to
         such portion of the Subject Interests in the "PUD Capex (net)", "PDNP
         Capex (net)" and "Other Capital Expenditures (net)" sections,
         respectively, of the Development Plan; provided, however, that,
         Approved Capital Expenditures reimbursed to Borrower shall not exceed
         the lesser of (i) Approved Capital Expenditures actually expended by
         Borrower for such period and (ii) the amount set forth in the "PUD
         Capex (net)", "PDNP Capex (net)" and "Other Capital Expenditures (net)"
         sections, respectively, of the Development Plan for such period. Unless
         specifically approved by Lender, any capital expenditures which fall


                                       3

         outside the above limitations shall be paid by Borrower and such
         capital expenditures will not be included in Approved Capital
         Expenditures.

         "Approved Independent Engineer" means McDaniel & Associates Consultants
         Ltd., or another independent petroleum engineer, selected by Borrower
         and acceptable to Lender, in its sole discretion; provided that Gilbert
         Laustsen Jung Associates Ltd., Outrim Szabo, Fekete Associates Inc.,
         DeGolyer and MacNaughton, Ryder Scott Co. Petroleum Consultants and
         Sproule & Associates Limited are all acceptable to Lender.

         "Approved G&A Expenses" means, for purposes of calculating Net Cash
         Flow, general and administrative expenses specified in relation to a
         particular portion of the Subject Interests and closing costs
         associated with this Agreement, reporting costs incurred under this
         Agreement for engineering and accounting reports and such other fees
         incurred by Borrower under this Agreement, which are approved by Lender
         as part of the "Approved G&A Expenses" section of the Development Plan;
         provided, however, that, unless otherwise specifically approved by
         Lender, Approved G&A Expenses reimbursed to Borrower shall not exceed
         the amount set forth in the "Approved G&A Expenses" section of the
         Development Plan for such period. Unless specifically approved by
         Lender, any general and administrative expenses which fall outside the
         above limitations shall be paid by Borrower and such general and
         administrative expenses will not be included in Approved G&A Expenses.

         "Approved Lease Operating Expenses" means, for purposes of calculating
         Net Cash Flow, production-related expenses specified in relation to a
         particular portion of the Subject Interests which are approved by
         Lender as part of the "Operating Expenses" section of the Development
         Plan and which only include the production-related expenses specified
         in relation to such portion of the Subject Interests in the "Operating
         Expenses" section of the Development Plan; provided, however, that,
         Approved Lease Operating Expenses reimbursed to Borrower shall not
         exceed the lesser of (i) Approved Lease Operating Expenses actually
         expended by Borrower for such period and (ii) the amount set forth in
         the "Operating Expenses" section of the Development Plan for such
         period. Unless specifically approved by Lender, any production-related
         expenses which fall outside the above limitations shall be paid by
         Borrower and such production-related expenses will not be included in
         Approved Lease Operating Expenses.

         "Approved Third-Party Transportation, Gathering and Marketing Expenses"
         means, for purposes of calculating Net Cash Flow, third-party
         transportation, gathering and marketing related expenses specified in
         relation to a particular portion of the Subject Interests which are
         approved by Lender and which only include the third-party
         transportation, gathering and marketing-related expenses specified in
         relation to such portion of the Subject Interests; provided, however,
         that Approved Third-Party Transportation, Gathering and Marketing
         Expenses reimbursed to Borrower shall not exceed Approved Third-Party
         Transportation, Gathering and Marketing Expenses actually expended by
         Borrower for such period. Unless specifically approved by Lender, any
         third-party transportation, gathering and marketing-related expenses
         which fall outside the above limitations shall be paid by Borrower and


                                       4

         such third-party transportation, gathering and marketing-related
         expenses will not be included in Approved Third-Party Transportation,
         Gathering and Marketing Expenses.

         "Authorized Officer" means, relative to any Obligor, those of its
         officers whose signatures and incumbency shall have been certified to
         Lender pursuant to Section 5.2.

         "Borrower" means Grey Wolf Exploration Inc. and its successors and
         permitted assigns.

         "Borrower Hedging Agreements" means each of (i) the Initial Hedging
         Agreements and (ii) any other Hedging Agreement entered into between
         Borrower and Lender or its Affiliates.

         "Broker's Fee" means any obligation or liability of any kind,
         contingent or otherwise, for any broker's, finders' or similar fees.

         "Business Day" means any day which is neither a Saturday or Sunday nor
         a legal holiday on which banks are authorized or required to be closed
         in Calgary, Alberta.

         "Capital Expenditures" means, for any period, the sum of (i) the
         aggregate amount of all expenditures of Borrower for fixed or capital
         assets made during such period which, in accordance with GAAP, would be
         classified as capital expenditures, and (ii) the aggregate amount of
         all Capitalized Lease Liabilities incurred during such period.

         "Capitalized Lease Liabilities" means the aggregate amount of all
         monetary obligations of Borrower and its Subsidiaries under any leasing
         or similar arrangement which, in accordance with GAAP, would be
         classified as capitalized leases, and, for purposes of this Agreement
         and each other Loan Document, the amount of such obligations shall be
         the capitalized amount thereof, determined in accordance with GAAP, and
         the stated maturity thereof shall be the date of the last payment of
         rent or any other amount due under such lease prior to the first date
         upon which such lease may be terminated by the lessee without payment
         of a penalty.

         "Cash Flow from Override" means, for any period and for each Override
         Royalty Agreement in effect at such time, proceeds payable to the owner
         of the Override pursuant to such Override Royalty Agreements for the
         life of the Subject Interests, which for greater certainty includes (i)
         any Subject Interest in respect of which Lender has exercised its
         Additional Development Program Option, and (ii) any replacement or
         offset well within the Subject Interests that produces Hydrocarbons
         that may be deemed to have been recovered by a well funded under this
         Agreement, or by a Subject Interest in which a well funded by this
         Agreement is located.

         "Change of Control" means if any Person, other than Abraxas Petroleum
         Corporation or Canadian Abraxas Petroleum Limited or their Affiliates
         acquires, directly or indirectly, alone or in concert with other
         Persons, over a period of time or at any one time, shares in the
         capital stock of Borrower aggregating in excess of 50% of all of the
         then issued and outstanding common shares and voting securities of
         Borrower, or if any Person, other than Abraxas Petroleum Corporation or


                                       5


         Canadian Abraxas Petroleum Limited or its Affiliates otherwise has the
         power to direct or cause the direction of the management and policies
         of Borrower.

         "Collateral Account" has the meaning set forth in Section 3.4.

         "Collateral Coverage Default" shall exist at all times when the
         Collateral Coverage Ratio is less than 125%.

         "Collateral Coverage Deficiency" shall exist at all times when the
         Collateral Coverage Ratio is less than 150% but greater than or equal
         to 125%.

         "Collateral Coverage Ratio" means, at any time, the ratio, expressed as
         a percentage, of (i) the sum of (A) Risked NPV10, plus (B) Working
         Capital, divided by (ii) Lender's Adjusted Investment.

         "Commitment" means Lender's obligation to make Loans pursuant to
         Section 2.1.

         "Commitment Amount" means, on the Effective Date $40,000,000, as such
         amount may be reduced or increased from time to time pursuant to
         Section 2.2.

         "Commitment Termination Date" means the earliest of (i) the Stated
         Maturity Date, (ii) the date on which the Commitment Amount and the
         Maximum Commitment Amount are terminated in full or reduced to zero
         pursuant to Section 2.2, and (iii) the date on which any Commitment
         Termination Event occurs. Upon the occurrence of any event described in
         clause (i) or (ii) of this definition, the Commitment shall terminate
         automatically without further action.

         "Commitment Termination Event" means (i) the occurrence of any Event of
         Default described in Section 9.1(h) or 9.1(i), or (ii) the occurrence
         and continuance of any other Event of Default and either (a) the
         declaration of the Loans to be due and payable pursuant to Section 9.2
         has been made, or (b) in the absence of such declaration, the giving of
         notice by Lender to Borrower that the Commitment has been terminated
         pursuant to Section 9.2.

         "Constating Document" means, relative to Borrower or its Subsidiaries,
         if any, its certificate of incorporation, formation or organization,
         its by-laws, operating agreement or other similar agreement and all
         shareholder agreements, voting trusts and similar arrangements
         applicable to any of its authorized shares of common stock.

         "Contingent Liability" means any agreement, undertaking or arrangement
         by which any Person guarantees, endorses or otherwise becomes or is
         contingently liable upon (by direct or indirect agreement, contingent
         or otherwise, to provide funds for payment, to supply funds to, or
         otherwise to invest in, a debtor, or otherwise to assure a creditor
         against loss) the Indebtedness of any other Person (other than by
         endorsements of instruments in the course of collection), or guarantees
         the payment of dividends or other distributions upon the securities of
         any other Person. The amount of any Person's obligation under any


                                       6

         Contingent Liability shall (subject to any limitation set forth
         therein) be deemed to be the outstanding principal amount (or maximum
         principal amount, if larger) of the Indebtedness guaranteed thereby.
         "Cumulative Return on Total Funding" means the annualized rate of
         return (on a before tax basis) actually earned by Lender from the
         repayment of all Indebtedness of Borrower to Lender under and pursuant
         to any of the Loan Documents, including for greater certainty,
         obligations of the Borrower arising under the Override, including any
         return resulting from the unwinding or early termination of a Borrower
         Hedging Agreement (the "Payout Amount").

         "Debenture" means the Debenture executed and delivered pursuant to
         Section 5.4(a) substantially in the form of Exhibit D-1, as amended,
         supplemented, restated or otherwise modified from time to time.

         "Debenture Pledge Agreement" means the Debenture Pledge Agreement
         executed and delivered pursuant to Section 5.4(a), substantially in the
         form of Exhibit D-2, as amended, supplemented, restated or otherwise
         modified from time to time.

         "Default" means any Event of Default or any condition, occurrence or
         event which, after notice or lapse of time or both, would constitute an
         Event of Default.

         "Default Rate" has the meaning set forth in Section 3.3.

         "Development Plan" means either (i) the development plan for the 2 year
         period after the Effective Date delivered to Lender pursuant to Section
         5.10 and attached hereto as Exhibit I, or (ii) the updated development
         plan, as required by and in accordance with Section 7.11, for the 2
         year period beginning on the date of delivery in substantially the same
         form as Exhibit I delivered to Lender and determined to be acceptable
         by Lender.

         "Direct Taxes" means (i) ad valorem taxes (or Taxes imposed in lieu
         thereof) imposed or assessed upon the Subject Interests or any mortgage
         thereof, (ii) corporate income tax, severance, gross production,
         occupation, extraction, gathering, and other Taxes and assessments of
         any kind, including conservation levies (other than (A) Taxes on or
         measured by Lender's net income or receipts and (B) franchise taxes)
         imposed or assessed with respect to or measured by or charged against
         the Subject Interests, and (iii) all other Taxes required by Applicable
         Law to be deducted from the proceeds of the Subject Interests.

         "Disbursement Request" has the meaning set forth in Section 3.4(b).

         "Disclosure Schedule" means the Disclosure Schedule attached as
         Schedule II, as it may be amended, supplemented or otherwise modified
         from time to time by Borrower with the written consent of Lender.

         "Dollar" and the sign "$" mean lawful money of Canada.

         "Effective Date" means December 20, 2001, or such other date as may be
         agreed to by the Parties.

                                       7

         "Environment" means all components of the earth, including all layers
         of the atmosphere, air, land (including all underground spaces and
         cavities and all lands submerged under water), soil, water (including
         surface and underground water), organic and inorganic matter and living
         organisms, and the interacting natural systems that include the
         components referred to in this definition.

         "Environmental Certificate" means a certificate substantially in the
         form of Exhibit J.

         "Environmental Laws" means all Applicable Laws relating to public
         health and safety and protection of the Environment.

         "Event of Default" has the meaning set forth in Section 9.1.

         "Existing Burdens" means, for any period, the aggregate amounts payable
         in respect of existing royalty, overriding royalty and other cost-free
         interests as a result of production of Hydrocarbons from the Subject
         Interests which burdens have been taken into account in determining the
         working interests and the net revenue interests in the Initial Subject
         Interests disclosed to Lender on Item 1.1 of the Disclosure Schedule.

         "GAAP" means generally accepted accounting principles which are in
         effect from time to time in Canada, in the case of Borrower, and the
         United States of America, in the case of Abraxas Petroleum Corporation.

         "Governmental Agency" means any federal, state, provincial, municipal,
         regional, tribal or local government or governmental department or
         other entity charged with the regulation, administration,
         interpretation or enforcement of any Applicable Law.

         "Hazardous Material" means (i) any "hazardous substance", as defined by
         the Environmental Protection and Enhancement Act (Alberta), as amended,
         or any similar legislation in jurisdictions where Borrower currently or
         in the future owns Property, (ii) any "hazardous waste", as defined by
         the Environmental Protection and Enhancement Act (Alberta), or any
         similar legislation in jurisdictions where Borrower currently or in the
         future owns Property, (iii) any petroleum product, or (iv) any
         pollutant or contaminant or hazardous, dangerous or toxic chemical,
         material or substance within the meaning of any other applicable
         Environmental Law relating to or imposing liability or standards of
         conduct concerning any hazardous, toxic or dangerous waste, substance
         or material, all as amended or hereafter amended.

         "Hedging Agreement" means any swap agreement, hedge agreement, floor
         agreement, collar agreement or other similar arrangement or agreement,
         including, any such agreement entered into in connection with an ISDA
         Master Agreement.

         "Hedging Obligations" means, with respect to any Person, all
         liabilities of such Person under Hedging Agreements, and all other
         agreements or arrangements designed to protect such Person against
         fluctuations in interest rates, commodity prices or currency exchange
         rates.

                                       8

         "herein", "hereof", "hereto", "hereunder" and similar terms contained
         in this Agreement or any other Loan Document refer to this Agreement or
         such other Loan Document, as the case may be, as a whole and not to any
         particular Section, paragraph or provision of this Agreement or such
         other Loan Document.

         "Hydrocarbon Proceeds" means the sum of all revenues and proceeds (i)
         received by Borrower from the sale of Hydrocarbons attributable to the
         Subject Interests and (ii) received (or if paid, less such amount) by
         Borrower from the settlement of any Hedging Agreement. Adjustments
         under clause (i) above will include adjustments related to third
         parties only, to be determined by Lender in its discretion acting
         reasonably, for (A) processing, treating and marketing fees, (B) fuel,
         shrinkage and unaccounted for losses, (C) fractionation costs, (D)
         storage and loading costs, (E) transportation costs including pipeline
         tariff, pipeline losses, and truck transport, and (F) any freight
         differentials received or allowed.

         "Hydrocarbons" means, collectively, oil, condensate and other liquid
         hydrocarbons, including natural gas or liquid products extracted from
         gas by means other than conventional field separation, and natural gas,
         casinghead gas, and other gaseous hydrocarbons, and, if applicable,
         helium and sulphur.

         "including" means including without limiting the generality of any
         description preceding such term.

         "Indebtedness" of any Person means, without duplication: (i) all
         obligations of such Person for borrowed money and all obligations of
         such Person evidenced by bonds, debentures, notes or other similar
         instruments, (ii) all obligations, contingent or otherwise, relative to
         the face amount of all letters of credit, whether or not drawn, and
         banker's acceptances issued for the account of such Person, (iii) all
         obligations of such Person as lessee under leases which have been or
         should be, in accordance with GAAP, recorded as Capitalized Lease
         Liabilities; (iv) all other items which, in accordance with GAAP, would
         be included as liabilities on the liability side of the balance sheet
         of such Person as of the date at which Indebtedness is to be
         determined, (v) net liabilities of such Person under all Hedging
         Obligations, (vi) whether or not so included as liabilities in
         accordance with GAAP, all obligations of such Person to pay the
         deferred purchase price of Property or services, and indebtedness
         (excluding prepaid interest thereon) secured by a Lien on Property
         owned or being purchased by such Person (including indebtedness arising
         under conditional sales or other title retention agreements), whether
         or not such indebtedness shall have been assumed by such Person or is
         limited in recourse, and (vii) all Contingent Liabilities of such
         Person in respect of any of the foregoing. For all purposes of this
         Agreement, the Indebtedness of any Person shall include the
         Indebtedness of any partnership in which such Person is a general
         partner and Indebtedness of a joint venture attributable to any such
         Person under any joint venture agreement or Applicable Law.

         "Indemnified Liabilities" has the meaning set forth in Section 12.4.

         "Indemnified Parties" has the meaning set forth in Section 12.4.

                                       9

         "Independent Reserve Report" has the meaning set forth in Section
         7.3(n).

         "Initial Drilling Program" means the well drilling program for the 42
         initial wells on the Subject Interests which is completed in accordance
         with the Development Plan.

         "Initial Hedging Agreement" has the meaning set forth in Section 7.17.

         "Initial Subject Interests" means all the right, title and interest of
         Borrower and its Subsidiaries in the initial Subject Properties, and
         are more particularly described in Schedule I.

         "Interest Rate" means, on any date and with respect to the Loans, a
         fixed rate of interest equal to 9.5% per annum (based on a year of 365
         days), subject to the adjustments as set forth herein.

         "Internal Reserve Report" has the meaning set forth in Section 7.3(o).

         "ISDA Master Agreement" means the International Swaps and Derivatives
         Association, Inc. Master Agreement executed and delivered pursuant to
         Section 5.20, substantially in the form of Exhibit H, as amended,
         supplemented, restated or otherwise modified from time to time.

         "Joint Operating Agreement" means all operating agreements to which
         Borrower is a party and which govern the operation of the Subject
         Interests, as each may be amended, supplemented, restated or otherwise
         modified from time to time.

         "Knowledge" means, with respect to any Person, either (i) the actual
         knowledge of information by such Person after reasonable inquiry or
         (ii) any information of which a reasonable and prudent Person operating
         in the same business capacity should have had knowledge after
         reasonable inquiry.

         "Lease Use Hydrocarbons" means any Hydrocarbons which are lost in the
         production thereof or used by the operator of the Subject Interests or
         any other Person for the purpose of reinjecting, producing, processing,
         treating, gathering or transporting Hydrocarbons from the Subject
         Interests, but only to the extent such Hydrocarbons are so used.

         "Lender" means Mirant Canada Energy Capital, Ltd., and its successors
         and assigns.

         "Lender's Adjusted Investment" means, at any time, the sum of: (i) the
         then outstanding principal balance of the Loans under this Agreement,
         plus (ii) any accrued and unpaid interest under the Loan Documents,
         plus (iii) only to the extent that proceeds have been deposited in the
         Collateral Account, any accrued and unpaid Override, plus (iv) any
         unpaid Reimbursable Expenses of Lender which are more than 15 days past
         due, plus (v) the aggregate amount of royalties that remain unpaid for
         30 days beyond the terms contained in the applicable Oil and Gas Leases
         and for which no designated cash reserves exists, plus (vi) the amount
         by which (A) the sum of capital expenditures and drilling, workover and


                                       10

         recompletion accounts payable of Borrower aggregating $100,000 or more
         exceeds (B) cash on hand either in the Collateral Account or held by
         Borrower that is solely earmarked and dedicated to the prompt payment
         of such costs and expenses.

         "Lien" means any security interest, mortgage, pledge, hypothecation,
         assignment, deposit arrangement, encumbrance, lien (statutory or
         otherwise), charge (whether fixed or floating) against, title retention
         agreement in respect of or interest in property to secure payment of a
         debt or performance of an obligation or other priority or preferential
         arrangement of any kind or nature whatsoever.

         "Loan" has the meaning set forth in Section 2.1.

         "Loan Document" means this Agreement, the Debenture, the Debenture
         Pledge Agreement, the Override Royalty Agreements, the Borrower Hedging
         Agreements and the ISDA Master Agreement, together with all exhibits,
         certificates, 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.

         "Loan Obligations" means all obligations (monetary or otherwise) of
         Borrower and each other Person (other than Lender) arising under or in
         connection with this Agreement and each other Loan Document that
         terminate upon the Indebtedness incurred pursuant to the Loans being
         unconditionally and irrevocably paid in full.

         "Loan Request" means a loan request and certificate duly executed by an
         Authorized Officer of Borrower, substantially in the form of Exhibit
         "A".

         "Maximum Commitment Amount" means, on any date, $150,000,000, as such
         amount may be reduced from time to time pursuant to Section 2.2.

         "Net Cash Flow" means, for any period, the sum of: (i) Hydrocarbon
         Proceeds received by Borrower for such period and any other gross
         revenues of Borrower (excluding cash flow from the sale of any or all
         of the Subject Interests or the refinancing of the Loans), minus (ii)
         Direct Taxes for such period, minus (iii) Existing Burdens for such
         period, only to the extent that they have been included within the
         amount of Hydrocarbon Proceeds, minus (iv) Cash Flow from Override for
         such period, minus (v) interest on the outstanding Loans accrued at the
         Interest Rate during such period, minus (vi) all Obligations under the
         Loan Documents related to the enforcement and maintenance of the Loan
         Documents, including Reimbursable Expenses, minus (vii) Approved Lease
         Operating Expenses actually paid by Borrower for such period, minus
         (viii) Approved Third-Party Transportation, Gathering and Marketing
         Expenses actually paid by Borrower for such period, minus (ix) Approved
         Capital Expenditures actually paid by Borrower for such period, minus
         (x) Approved G&A Expenses, minus (xi) goods and services Tax, minus
         (xii) distributions permitted under Section 8.5, (xiii) minus, a cash
         reserve of less than or equal to $100,000 to be used for general
         corporate purposes as the Borrower sees fit from time to time, minus
         (xiv) any other amounts approved by Lender in its sole and absolute
         discretion.

                                       11

         "Net Sales Proceeds" means the gross cash proceeds net of adjustments
         from the sale by Borrower of any of the Subject Interests, less the sum
         of the following expenses incurred in connection with such sale: normal
         and customary closing-related costs and expenses payable to
         unaffiliated third parties, such as Taxes (including ordinary and
         capital obligations incurred by Borrower attributable to such sale),
         escrow charges, title examination fees, reasonable legal fees and
         expenses incurred in connection with the sale, reasonable and customary
         brokerage commissions to third-parties and recording expenses
         (specifically excluding, however, any payments, commissions, fees or
         other amounts paid or payable to Borrower or any of its Affiliates or
         any other Obligor) payable in connection therewith by Borrower or any
         of its Affiliates as the seller thereunder.

         "Non-Consent Hydrocarbons" means those Hydrocarbons produced from a
         well during the applicable period of recoupment or reimbursement
         pursuant to a non-consent provision covering the relevant well or
         wells, which Hydrocarbons have been relinquished to the consenting
         party or participating party under the terms of such non-consent
         provision as the result of the election by Borrower not to participate
         in the particular operation.

         "Obligations" means all Loan Obligations and all other on-going
         obligations (monetary or otherwise) of Borrower and each other Person
         (other than Lender) arising under or in connection with the Loan
         Documents (including the Override Royalty Agreement and pursuant to
         Section 12.4 and 12.5).

         "Obligor" means Borrower or any other Person (other than Lender)
         obligated under any Loan Document.

         "Oil and Gas Leases" means all oil, gas, mineral and other leases and
         includes any subleases and assignments of operating rights.

         "Override" means an overriding royalty interest burdening and carved
         out of the Subject Interests granted pursuant to the Override Royalty
         Agreements.

         "Override Royalty Agreements" means, collectively, Override Royalty
         Agreement No. 1 and Override Royalty Agreement No. 2.

         "Override Royalty Agreement No. 1" means the Overriding Royalty
         Agreement executed and delivered pursuant to Section 5.3(a),
         substantially in the form of Exhibit "D", as it may be amended,
         supplemented, restated or otherwise modified from time to time.

         "Override Royalty Agreement No. 2" means the Override Royalty Agreement
         executed and delivered pursuant to Section 5.3(b), substantially in the
         form of Exhibit "E", as it may be amended, supplemented, restated or
         otherwise modified from time to time.

         "Override Hydrocarbons" means the Hydrocarbons conveyed to Lender
         pursuant to each Override Royalty Agreement.

         "Participant" has the meaning set forth in Section 12.15.

                                       12


         "Parties" means the parties to this Agreement, and "Party" means any
         one of them.

         "Payment Date" means the fifth (5th) Business Day following the end of
         each calendar month (commencing February 7, 2002) or, if any such day
         is not a Business Day, the next succeeding Business Day.

         "Payout Amount" has the meaning set forth in the definition of
         "Cumulative Return on Total Funding".

         "Permitted Liens" means (i) Liens for Taxes, assessments or other
         governmental charges or levies which are not delinquent or which are
         being contested diligently in good faith, (ii) Liens in connection with
         workers' compensation, unemployment insurance or other social security,
         pension plan or public liability obligations which are not delinquent
         or which are being contested diligently in good faith, (iii)
         operators', vendors', carriers', warehousemen's, repairmen's,
         builder's, mechanics', suppliers', workers', materialmen's,
         construction or other like Liens arising by operation of law in the
         ordinary course of business or incident to the exploration,
         development, operation and maintenance of oil and gas Properties or
         statutory landlord's Liens, including lessee or operator obligations
         under Applicable Law related to the ownership, exploration and
         production of oil, gas and minerals on private or Crown lands or
         waters, each of which is in respect of obligations that have not been
         outstanding more than 90 days or which are being contested diligently
         in good faith, provided the Persons entitled to the benefits of such
         Liens are not exercising remedies in respect thereof other than the
         making of demands or the giving or filing of notices required to
         perfect such Liens and are not suing for payment of the amounts secured
         thereby, (iv) Liens which (A) arise in the ordinary course of business
         under the Joint Operating Agreements, other operating agreements, gas
         balancing agreements, joint venture agreements, oil and gas partnership
         agreements, oil and gas leases, farm-out agreements, division orders,
         contracts for the sale, transportation or exchange of oil and natural
         gas, unitization and pooling declarations and agreements, area of
         mutual interest agreements, overriding royalty agreements, marketing
         agreements, processing agreements, net profits agreement, development
         agreements, gas balancing or deferred production agreements, injection,
         repressuring and recycling agreements, salt water or other disposal
         agreements, seismic or other geophysical permits or agreements, and
         other agreements which are usual and customary in the oil and gas
         business, and (B) are for claims which either are not delinquent or
         which are being contested diligently in good faith, provided the
         Persons entitled to the benefits of such Liens are not exercising
         remedies in respect thereof other than the making of demands or the
         giving or filing of notices required to perfect such Liens, (v) Liens
         reserved in oil and gas mineral leases, agreements or created by
         statute, to secure royalty, net profits interests, bonus payments,
         rental payments or other payments out of or with respect to the
         production, transportation or processing of Hydrocarbons, which are in
         existence on the Effective Date or the date the Subject Interests are
         made subject to this Agreement, and which are reflected in Schedule I,
         (vi) Liens arising solely by virtue of any statutory or common law
         provision relating to banker's liens, rights of set-off or similar
         rights and remedies and burdening only deposit accounts or other funds
         maintained with a creditor depository institution, (vii) defects or


                                       13

         irregularities in title, and liens, charges or encumbrances, which are
         not such as to interfere materially with the development, operation or
         value of the Subject Interests and not such as materially to impair
         title thereto, (viii) encumbrances (other than to secure the payment of
         Indebtedness or the deferred purchase price of Property or services),
         easements, restrictions, servitudes, permits, conditions, covenants,
         exceptions or reservations in any property of Borrower for the purpose
         of roads, pipelines, transmission lines, transportation lines,
         distribution lines for the removal of gas, oil, coal or other minerals
         or timber, and other like purposes, or for the joint or common use of
         real estate, rights of way, facilities and equipment, and defects,
         irregularities, zoning restrictions and deficiencies in title of any
         Property which in the aggregate do not materially impair the use of
         such Property for the purposes of which such Property is held by
         Borrower if any, or materially impair the value of such Property
         subject thereto; (ix) Liens on cash or securities pledged to secure
         performance of tenders, surety and appeal bonds, government contracts,
         performance and return of money bonds, bids, trade contracts, leases,
         statutory obligations, regulatory obligations and other obligations of
         a like nature incurred in the ordinary course of business, (x) those
         Liens consented to in writing by Lender, (xi) Liens securing payment of
         the Obligations granted pursuant to any Loan Document, (xii) Liens
         permitted by any other Loan Document, and (xiii) any Liens described on
         Item 1.1 ("Liens") of the Disclosure Schedule.

         "Person" means any natural person, corporation, partnership, company,
         firm, association, trust, Governmental Agency or any other entity,
         whether acting in an individual, fiduciary or other capacity.

         "Possible Reserves" means those Hydrocarbon reserves that are not
         Proved Reserves and are speculative reserves estimated beyond Proved
         and Probable Reserves where geological and engineering data suggest the
         presence of additional reserves, but where the risk is relatively high.

         "Probable Reserves" means those Hydrocarbons reserves which are not
         Proved Reserves and which analysis of geological and engineering data
         suggests are more likely than not to be recoverable, but where some
         element of risk or insufficient data prevent classification as proved.

         "Production Sale Contracts" means contracts for the sale of Subject
         Hydrocarbons now in effect or hereafter entered into by Borrower with
         Lender's written consent.

         "Projected Income and Expense Attributable to the Subject Interests"
         means, with respect to the Subject Interests for any period, the sum
         of: (i) estimated future Net Cash Flow, discounted at 10% per annum,
         attributable to total Acceptable Proved Reserves for such period, minus
         (ii) estimated Direct Taxes for such period, minus (iii) estimated
         Existing Burdens for such period, including the overriding royalties
         granted pursuant to the Overriding Royalty Agreements, minus (iv)
         estimated Approved Lease Operating Expenses (which must reflect actual
         historical results for such period, minus (v) estimated Approved Third
         Party Transportation, Gathering and Marketing Expenses for such period,
         minus (vi) estimated Approved Capital Expenditures for such period,
         including, any anticipated plugging and abandoning costs. In connection
         with such calculation, pricing assumptions are net at the wellhead and


                                       14

         are based on, (A) for volumes of oil and gas swapped or hedged with
         investment grade counter parties, the hedged price, and (B) for all
         other volumes, the forward New York Mercantile Exchange contract prices
         for oil and gas, less the basis adjustments for geographical and
         quality differentials. If a dispute arises concerning the inclusion of
         the Approved Lease Operating Expenses relating to workovers or other
         remedial capital expenses, Approved Independent Engineer will make a
         good faith determination if such are a predictable, prudent and ongoing
         expense(s) of Borrower, viewed as a whole (if the Approved Independent
         Engineer makes such good faith determination, then those expenses
         previously projected as "capital expenditures" will be included in
         Approved Lease Operating Expenses). All variables used to determine the
         Projected Income and Expense Attributable to Subject Interest shall be
         selected by Lender in its reasonable discretion.

         "Property" means any interest in any kind of property or asset, whether
         real, personal or mixed, or tangible or intangible.

         "Proposed Non-Subject Interest Undertaking" has the meaning set forth
         in Section 4.4.

         "Proposed Undertaking" has the meaning set forth in Section 4.3.

         "Proved Developed Non-Producing Reserves" means (i) those Proved
         Reserves expected to be produced from existing completion intervals in
         existing wells for which capacity is planned or available pursuant to
         an approved Development Plan, but due to pending pipeline connections
         or other mechanical or contractual requirements Hydrocarbon sales have
         not yet commenced, and (ii) other non-producing Proved Reserves which
         exist behind the casing of existing wells, or at minor depths below the
         present bottom of such wells, which are expected to be produced through
         these wells in the predictable future, where the cost of making such
         Hydrocarbons available for production should be relatively small
         compared to the cost of a new well and for which capacity is planned or
         available pursuant to an approved Development Plan.

         "Proved Developed Producing Reserves" means those Proved Reserves which
         are recoverable from existing completion intervals in existing wells
         currently open and producing to market at the time of the estimate.

         "Proved Reserves" means those recoverable Hydrocarbons which have been
         proved to a high degree of certainty by reason of existing production,
         adequate testing, or in certain cases by adequate core data and other
         engineering and geologic information on zones which are present in
         existing wells or in known reservoirs which are recoverable under
         existing economic and operating conditions. Reserves that can be
         produced economically through the application of established improved
         recovery techniques are included in the proved classification when (i)
         successful testing by a pilot project or the operation of any installed
         program in that reservoir or one in the immediate area with similar
         rock and fluid properties provides support for the engineering analysis
         on which the project or program was based, and (ii) it is reasonably
         certain the project will proceed. Reserves to be recovered by improved
         recovery techniques that have yet to be established through repeated
         economically successful applications are included in the proved


                                       15

         category only after successful testing by a pilot project or after the
         operation of an installed program in the reservoir provides support for
         the engineering analysis on which the project or program was based.
         Improved recovery includes all methods for supplementing natural
         reservoir forces and energy, or otherwise increasing ultimate recovery
         from a reservoir, including (A) pressure maintenance, (B) cycling, and
         (C) secondary recovery in its original sense. Improved recovery also
         includes the enhanced recovery methods of thermal, chemical flooding,
         and the use of miscible and immiscible displacement fluids.

         "Proved Undeveloped Reserves" means those Proved Reserves which are
         expected to be recovered from (i) new wells on undrilled acreage, (ii)
         the deepening of existing wells where a relatively major expenditure is
         required for completion, or (iii) an existing well where a relatively
         large expenditure is required to recomplete an existing completion
         interval or install production or transportation facilities for a
         primary or improved recovery project. Proved Undeveloped Reserves on
         undrilled acreage are limited to those drilling units offsetting
         productive units that are reasonably certain of production when
         drilled.

         "Proven Reserves" means, collectively, Proved Reserves, Proved
         Developed Producing Reserves, Proved Developed Non-Producing Reserves,
         and Proved Undeveloped Reserves.

         "Refinancing Date" has the meaning set forth to it in Section 3.2.

         "Refinancing Period" means the period commencing on the Effective Date
         and ending at 6:00 p.m. (Calgary, Alberta) on June 20, 2002.

         "Refinancing Minimum Return" means an amount equal to (i) an amount
         expressed in Dollars which is a Cumulative Return on Total Funding of
         17.5%, plus (ii) an amount equal to the present value (discounted at
         the rate of 10% per annum) of the Override Royalty Agreement No. 1
         attributable to the Subject Properties (other than the Proved Developed
         Producing Reserves) which are included in the Development Plan in
         effect on the Refinancing Date (the "PV10"). The PV10 will be
         calculated as follows:

         (a)      the reserve volumes will be the un-risked reserve volumes,
                  operating expenses, taxes and other burdens, as calculated by
                  Lender based on the Development Plan then in effect, provided
                  that Lender may adjust reserve volumes of certain wells that
                  are subject to the said Development Plan based on performance
                  of wells previously completed as part of the Development Plan
                  between the Effective Date and the Refinancing Date; and

         (b)      the applicable commodity prices will be the NYMEX forward oil
                  and gas price forecasts utilized by Lender at the time of the
                  Refinancing Date adjusted to take into account actual
                  processing, treating and other adjustments, plus the
                  applicable forward basis differentials applicable to the
                  pricing points provided by Lender to Borrower at the time of
                  the Refinancing Date.

                                       16


         "Reimbursable Expenses" means all expenses paid or incurred by Lender
         which consist of, or are incidental to (i) any production-related
         expense or production-related tax reasonably incurred by Lender in
         paying or performing any obligations on behalf of Borrower under any of
         the Loan Documents, (ii) any costs, expenses or other amounts
         reasonably incurred by Lender in paying or performing any obligations
         on behalf of Borrower under any of the Loan Documents, (iii) costs
         associated with cancellation of Borrower Hedging Agreements with Lender
         or any Affiliate of Lender, including brokers fees, exchange expenses,
         document expenses and related charges incurred by Lender as a result of
         contracts entered into during the term of this Agreement, (iv) the
         Indemnified Liabilities that become owing to any Indemnified Party
         under this Agreement which have not previously been paid by Borrower,
         and (v) the Tax Amount.

         "Release" means to release, spill, leak, pump, pour, emit, empty,
         discharge, migrate, inject, escape, leach, dispose, dump, abandon,
         deposit, seep, throw, place, exhaust, inoculate, inject, spray or to do
         a similar act.

         "Residual Hydrocarbons" means for any period of time the volume of all
         Hydrocarbons produced from the Subject Interests other than Override
         Hydrocarbons during the same period of time.

         "Risked NPV10" means, at any time, the calculation by Lender, in its
         sole and absolute discretion, using Lender's customary standards for
         evaluating reserves, of the present value of future cash flows
         (discounted at a nominal rate of ten percent (10%) per annum) from the
         Subject Interests, net of Existing Burdens, based upon the most recent
         Independent Reserve Report using Lender's customary standards for
         commodity prices, reserve risking, well and reserves concentration risk
         and limitations and Proved Developed Producing Reserves immaturity
         adjustment and which is adjusted from the date of the most recent
         Independent Reserve Report to the determination date for such
         calculation. In determining Risked NPV10, Proved Developed Producing
         Reserves, Proved Developed Non-Producing Reserves, Proved Undeveloped
         Reserves and Probable Reserves shall include only those reserves for
         which (i) capital improvements (as reflected in the most recent
         Independent Reserve Report) have been scheduled and which are
         reasonably expected to be available from either Lender or Net Cash
         Flow, as approved by Lender, and (ii) equipment and services are
         reasonably expected to be available.

         "Scheduled Payment" means, for any period, an amount equal to the
         greater of (i) the unpaid and accrued interest on the aggregate unpaid
         principal amount of the Loans or (ii) Net Cash Flow.

         "Stated Maturity Date" means December 20, 2007.

         "Subject Hydrocarbons" means all Hydrocarbons in and under, and which
         may be produced and saved from, and which shall accrue or be
         attributable to the Subject Interests and which are produced after the
         Effective Date (other than Lease Use Hydrocarbons and Non-Consent
         Hydrocarbons where Borrower is the non-consenting party) and shall be
         deemed to include the proceeds of such Hydrocarbons.

                                       17


         "Subject Interests" means all right, title and interest of Borrower in
         and to the Subject Properties and the Initial Subject Interests. The
         term "Subject Interest", when used with reference to any particular
         Subject Interest, shall mean and include (i) such Subject Interest as
         the same may be enlarged or diminished by the provisions of any
         contract or other instrument described in Schedule I, or by the removal
         of any charges or encumbrances to which such Subject Interest is
         subject, (ii) any and all renewals, replacements and extensions of such
         Subject Interest, or other interests in the Hydrocarbons in, under and
         that may be produced from lands comprising a portion of the Subject
         Interests acquired by Borrower during the term hereof, (iii) all
         contracts supplemental to or amendatory of or in substitution for the
         contracts described above insofar as the same relate to such Subject
         Interest, and (iv) all rights, titles and interests accruing or
         attributable to such Subject Interest by virtue of its being included
         in any pooling or unit.

         "Subject Property" and "Subject Properties" means the (i) initial
         Subject Properties more particularly described in Schedule I, and (ii)
         any and all Oil and Gas Leases and leasehold working interests, net
         profits interests and production payments, including the Oil and Gas
         Leases and leasehold working interests, net profits interests, royalty
         interests, mineral interests and production payments described in
         Schedule I, together with all Hydrocarbons severed while Obligations
         continue to exist which are attributable to such leases and interests
         together with all of the valid Subject Hydrocarbons unitization and
         pooling agreements which are described in such Schedule I or which
         relate to any of the properties and interests described in such
         Schedule I, and (iii) all Properties in which Borrower acquires or
         purports to acquire an interest in any Acquisition, if any, to the
         extent such Acquisition is funded by Lender pursuant to the terms of
         this Agreement.

         "Subsidiary" means, with respect to any Person, (i) any corporation of
         which more than 50% of the outstanding capital stock having ordinary
         voting power to elect a majority of the board of directors of such
         corporation (irrespective of whether at the time capital stock of any
         other class or classes of such corporation shall or might have voting
         power upon the occurrence of any contingency) is at the time directly
         or indirectly owned by such Person, by such Person and one or more
         other Subsidiaries of such Person, or by one or more other Subsidiaries
         of such Person; (ii) any partnership of which such Person, such Person
         and one or more other Subsidiaries of such Person, or one or more other
         Subsidiaries of such Person is a general partner, (iii) any limited
         liability company in which such Person, such Person and one or more
         other Subsidiaries of such Person, or one or more other Subsidiaries of
         such Person is a member or manager with ownership interest in excess of
         50% of all outstanding ownership interests, or (iv) any other entity in
         which such Person, such Person and one or more other Subsidiaries of
         such Person, or one or more other Subsidiaries of such Person has an
         ownership interest in excess of 50% of all outstanding ownership
         interests.

         "Tax Amount" means an amount equal to the aggregate of all amounts,
         including interest and penalties, if any, relating thereto, paid by
         Lender in such month, and which have not been paid by Borrower pursuant
         to the provisions of this Agreement, on account of (i) Direct Taxes,
         (ii) any excise tax imposed on or assessed with respect to or measured
         by or charged against the Subject Hydrocarbons, or (iii) any sales or


                                       18


         gross receipts taxes, which are imposed on Lender by any Governmental
         Agency in which any of the Subject Interests are located, and which are
         payable on account of Lender's Liens in the Subject Hydrocarbons,
         provided, however, that the Tax Amount shall not include any taxes
         associated with the handling, transportation, refining, purchase or
         sale of Subject Hydrocarbons after they have been delivered to the
         credit of Lender, nor any taxes which are imposed on Lender pursuant to
         the Income Tax Act (Canada).

         "Title Certificate" means a certificate substantially in the form of
Exhibit I.

         "Transportation Agreements" means any contract or agreement entered
         into from time to time by Borrower relating to the transportation of
         Hydrocarbons, as any such agreement or contract may be amended,
         supplemented, restated or otherwise modified from time to time.

         "Working Capital" means, at any time and determined in accordance with
         GAAP, the excess of (i) consolidated current assets of Borrower, minus
         (ii) consolidated current liabilities of Borrower.

1.2      Use of Defined Terms. Unless otherwise defined or the context otherwise
         requires, terms for which meanings are provided in this Agreement shall
         have such meanings when used in the Disclosure Schedule and in each
         Loan Request, Loan Document, notice and other communication delivered
         from time to time in connection with this Agreement or any other Loan
         Document.

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

1.4      Accounting and Financial Determinations. Unless otherwise specified,
         all accounting terms used herein or in any other Loan Document shall be
         interpreted, all accounting determinations and computations hereunder
         or thereunder shall be made, and all financial statements required to
         be delivered hereunder or thereunder shall be prepared in accordance
         with GAAP, consistently applied, which were applied in the preparation
         of the financial statements referred to in Section 6.6.

1.5      Statutes, Regulations and Rules. Any reference in the Loan Documents to
         all or any section or paragraph or any other subdivision of any
         Applicable Law will, unless otherwise expressly stated, be a reference
         to that Applicable Law or the relevant section or paragraph or other
         subdivision thereof, as such Applicable Law may be amended,
         substituted, replaced or re-enacted from time to time.

1.6      Monetary References. Whenever an amount of money is referred to in the
         Loan Documents, such amount will, unless otherwise expressly stated, be
         in Canadian Dollars.

                                       19


1.7      Schedules and Exhibits. The following are the Schedules and Exhibits
         which form part of this Agreement:

         Schedule I          -      Description of Subject Interests
         Schedule II         -      Use of Proceeds
         Schedule III        -      Insurance Requirements
         Schedule IV         -      Disclosure Schedule
         Schedule V          -      Pension Plans
         Schedule VI         -      List of Transportation Agreement and Joint
                                    Operating Agreements

         Schedule VII        -      Financing Lease Arrangements
         Schedule VIII       -      Title Deficiencies

         Exhibit A           -      Form of Loan Request
         Exhibit B           -      Form of Opinion of Borrower's Counsel
         Exhibit C-1         -      Form of Debenture
         Exhibit C-2         -      Form of Debenture Pledge Agreement
         Exhibit D           -      Form of Override Royalty Agreement No. 1
         Exhibit E           -      Form of Overriding Royalty Agreement No. 2
         Exhibit F           -      Form of ISDA Master Agreement
         Exhibit G           -      Development Plan
         Exhibit H           -      Form of Environmental Certificate
         Exhibit I           -      Form of Title Certificate

                                   Article 2
                         COMMITMENT AND LOAN PROCEDURES

2.1      Commitment. From time to time on any Business Day occurring prior to
         the Commitment Termination Date on the terms and subject to the
         conditions of this Agreement upon delivery of a Loan Request by
         Borrower to Lender, Lender, in its sole and absolute discretion, may
         make loans (the "Loans") to Borrower equal to the aggregate amount of
         the Loan requested by Borrower to be made on such day; provided,
         however, that if no Default or Event of Default has occurred and is
         continuing, Lender agrees to make Loans in the amount requested by
         Borrower to be made on such date in the aggregate amount for all Loans
         up to the Commitment Amount. The commitment of Lender described in this
         Section 2.1 is herein referred to as its "Commitment". Lender shall not
         be required to make any Loan if, after giving effect thereto, the
         aggregate outstanding principal amount of all Loans would exceed the
         Commitment Amount. Borrower may not borrow, repay and reborrow Loans.

2.2      Maximum Commitment Amount and Commitment Amount The Maximum Commitment
         Amount is subject to reduction from time to time pursuant to this
         Section 2.2. The Commitment Amount is subject to increase or reduction
         from time to time pursuant to this Section 2.2.

(a)      Optional Increase or Reduction:
         -------------------------------

                                       20


         (i)               Borrower may, from time to time on any Business Day
                           after December 20, 2002, voluntarily reduce the
                           Commitment Amount and/or the Maximum Commitment
                           Amount; provided, however, that all such reductions
                           shall require at least 3 Business Days' prior notice
                           to Lender and be permanent, and any partial reduction
                           of either the Commitment Amount or the Maximum
                           Commitment Amount shall be in a minimum amount of
                           $500,000 and in an integral multiple of $100,000.

         (ii)              Lender, in its sole and absolute discretion, may,
                           from time to time after giving Borrower 30 days prior
                           written notice, increase or reduce the Commitment
                           Amount; provided, however, that there shall be no
                           reductions in the Commitment Amount if such amount is
                           a contemplated expenditure pursuant to an approved
                           Development Plan; provided, further, that the
                           Commitment Amount may never exceed the Maximum
                           Commitment Amount and, if as a result of a reduction
                           in the Maximum Commitment Amount the Commitment
                           Amount exceeds the Maximum Commitment Amount at any
                           time, the Commitment Amount shall automatically be
                           reduced to an amount equal to the Maximum Commitment
                           Amount; and provided further, that the Commitment
                           Amount may never be reduced to an amount which is
                           less than the amount of outstanding Loans.

         (b)      Mandatory Reduction. Notwithstanding any other provision of
                  the Loan Documents to the contrary, the Commitment Amount and
                  the Maximum Commitment Amount each shall, without any further
                  action, automatically and permanently be reduced to zero ($0)
                  on the Commitment Termination Date.

2.3      Loan Procedure. By delivering a Loan Request to Lender on or before
         11:00 a.m., Calgary, Alberta time, on a Business Day, Borrower may from
         time to time irrevocably request, on not less than 3 nor more than 5
         Business Days' notice, that a Loan be made in a minimum amount of
         $100,000, and in an integral multiple of $100,000 or in the unused
         amount of the Commitment or in such other amount as agreed to by
         Lender, in its sole discretion. On the terms and subject to the
         conditions of this Agreement, each Loan shall be made on the Business
         Day specified in such Loan Request. Lender shall make funds in an
         amount equal to the requested Loan available to Borrower by wire
         transfer or account entry to the Collateral Account or, subject to
         Lender's consent, to such other account specified in the Loan Request,
         on or before 1:00 p.m., Calgary, Alberta time, on such Business Day.

2.4      Records. The Lender will maintain records, in written or electronic
         form, evidencing all Loans and all other Indebtedness owing by Borrower
         to Lender hereunder and under the other Loan Documents. Lender will
         enter in such records details of all amounts from time to time owing,
         paid or prepaid by Borrower to it hereunder. The information entered in
         such records will constitute prima facie evidence of such Loans and
         Indebtedness of Borrower to Lender hereunder.

                                       21

                                   Article 3
                   REPAYMENTS, PREPAYMENTS, INTEREST AND FEES

3.1      Repayments and Prepayments

(a)      Borrower shall unconditionally and irrevocably repay in full the unpaid
         principal amount of each Loan and unpaid interest on such Loans on the
         Stated Maturity Date. Prior thereto, Borrower:

         (i)      may, from time to time on any Business Day after December 20,
                  2002, make a voluntary prepayment, in whole or in part, of the
                  outstanding principal amount of any Loans; provided, however,
                  that all such voluntary prepayments shall require at least 3
                  but no more than 5 Business Days' prior written notice to
                  Lender, and provided, further, however, that Borrower may make
                  a voluntary prepayment as required by Sections 7.5 and
                  9.2(a)(iv) at any time;

         (ii)     shall, on the date of any sale of all or a portion of the
                  Subject Interests, make a mandatory prepayment in the amount
                  of the Net Sales Proceeds from such sale of the Subject
                  Interests;

         (iii)    shall, on each Payment Date, unless otherwise consented to by
                  Lender in writing, make a mandatory repayment in the amount of
                  Borrower's Net Cash Flow for the month prior to such Payment
                  Date;

         (iv)     shall, on each date when any reduction in the Commitment
                  Amount or the Maximum Commitment Amount shall become
                  effective, make a mandatory repayment of all Loans equal to
                  the excess, if any, of the aggregate outstanding principal
                  amount of all Loans at such time over the Commitment Amount as
                  so reduced; and

         (v)      shall, immediately upon any acceleration of the Stated
                  Maturity Date of any Loans pursuant to Section 9.2, repay all
                  Loans, unless only a portion of all Loans is so accelerated.

(b)      Each prepayment of any Loans made pursuant to Section 3.1(a) shall be
         without premium or penalty. All prepayments received by Lender pursuant
         hereto shall be applied (i) if received by Lender prior to 12:00 p.m.
         (noon), Calgary, Alberta time, on a Business Day, immediately on such
         Business Day and (ii) if received by Lender after 12:00 p.m. (noon),
         Calgary, Alberta time, on a Business Day, immediately on the first
         Business Day thereafter as follows:

         (i)      to the payment and satisfaction of all costs and expenses
                  reasonably incurred in connection with the collection of such
                  payments and proceeds;

         (ii)     to the payment of any accrued interest and fees on the Loans
                  pursuant to this Agreement and each other Loan Document; and

                                       22


         (iii)    to the payment of the outstanding principal under the Loans
                  outstanding hereunder.

3.2      Refinancing. Notwithstanding Section 3.1, if Borrower pays to Lender
         the Payout Amount at any time during the Refinancing Period (the
         "Refinancing Date"), then Borrower shall pay to Lender, on or prior to
         the end of the Refinancing Period, (which amount while outstanding
         shall be secured by the security granted pursuant to Section 5.4) the
         Refinancing Minimum Return.

         If Borrower pays the Payout Amount to Lender during the Refinancing
         Period, such payment shall be made free of any prepayment penalty which
         Lender may incur by virtue of the Payout Amount being made.

3.3      Interest Provisions.
         -------------------

         (a)      Interest on the outstanding principal amount of Loans shall
                  accrue daily at the Interest Rate. After the date any
                  principal amount of any Loan is due and payable (whether on
                  the Stated Maturity Date, upon acceleration or otherwise), or
                  after an Event of Default, or after any other monetary
                  Obligation of Borrower shall have become due and payable,
                  Borrower shall pay, but only to the extent permitted by
                  Applicable Law, interest (after as well as before judgment) on
                  such amounts at a rate per annum equal to fifteen percent
                  (15%) ("Default Rate"); provided, that once all such amounts
                  and accrued interest thereon are unconditionally and
                  irrevocably paid in full, interest shall accrue at the
                  Interest Rate.

         (b)      Interest accrued on each Loan shall be payable, without
                  duplication, (i) on the Stated Maturity Date therefor, (ii) on
                  the date of any payment or prepayment, in whole or in part, of
                  principal outstanding on such Loan; (iii) on each Payment Date
                  occurring after the Effective Date; and (iv) on that portion
                  of any Loans the Stated Maturity Date of which is accelerated
                  pursuant to Section 9.2, immediately upon such acceleration.
                  Interest accrued on Loans or other monetary Obligations
                  arising under this Agreement or any other Loan Document after
                  the date such amount is due and payable (whether on the Stated
                  Maturity Date, upon acceleration or otherwise) shall be
                  payable upon demand.

         (c)      For the purposes of the Interest Act (Canada) and all other
                  Applicable Law which may hereafter regulate the calculation or
                  computation of interest on borrowed funds, the annual rates of
                  interest and fees applicable to Loans are the rates as
                  determined hereunder multiplied by the actual number of days
                  in a period of one year commencing on the first day of the
                  period for which such interest is payable and divided by 365.

3.4      Collateral Account.
         ------------------

         (a)      Borrower shall cause all Hydrocarbon Proceeds to be delivered
                  to an account designated in writing by Lender from time to
                  time (the "Collateral Account") which is to be maintained by


                                       23

                  Lender and is in all respects satisfactory to Lender. No
                  funds, other than Hydrocarbon Proceeds and amounts from any
                  Loans, will be paid to the Collateral Account. If, however,
                  funds other than Hydrocarbon Proceeds are deposited into the
                  Collateral Account, Lender will pay such other funds to
                  Persons that Borrower directs Lender to pay in writing.
                  Borrower agrees not to open any new Collateral Account or
                  similar account, or take any action to terminate the existing
                  Collateral Account, without the prior written consent of
                  Lender. All Hydrocarbon Proceeds received by Borrower shall be
                  delivered in kind to Lender for deposit into the Collateral
                  Account and Borrower shall not commingle any such proceeds,
                  and shall hold separate and apart from all other property, all
                  such proceeds in express trust for the benefit of Lender until
                  delivery thereof is made to the Collateral Account.

         (b)      No more than 2 times a month, Borrower may request in writing
                  (a "Disbursement Request"), delivered three (3) Business Days
                  prior to the date of any requested disbursement and executed
                  by an Authorized Officer, that Lender reimburse Borrower or
                  disburse directly to Borrower, as appropriate, out of funds in
                  the Collateral Account, (i) Direct Taxes for such period, (ii)
                  Existing Burdens for such period, (iii) Cash Flow from
                  Override for such period (provided that such amounts will be
                  paid directly to Lender), (iv) interest on the Loans accrued
                  at the Interest Rate or, if applicable, the Default Rate
                  during such period, (provided that such amounts will be paid
                  directly to Lender) (v) all Obligations under the Loan
                  Documents related to the enforcement and maintenance of the
                  Loan Documents, (provided that such amounts will be paid
                  directly to Lender) (vi) all unpaid Scheduled Payments,
                  (provided that such amounts will be paid directly to Lender)
                  (vii) Approved Lease Operating Expenses due for such period,
                  provided that if any material Default or any Event of Default
                  has occurred and is continuing, then only Approved Lease
                  Operating Expenses actually paid by Borrower for such period,
                  (viii) Approved Third-Party Transportation, Gathering and
                  Marketing Expenses due for such period, provided that if any
                  material Default or any Event of Default has occurred and is
                  continuing, then only Approved Third-Party Transportation,
                  Gathering and Marketing Expenses actually paid by Borrower for
                  such period, (ix) Approved Capital Expenditures due for such
                  period, provided that if any material Default or any Event of
                  Default has occurred and is continuing, then only Approved
                  Capital Expenditures actually paid by Borrower for such
                  period, (x) Approved G&A Expenses due for such period,
                  provided that if any material Default or any Event of Default
                  has occurred and is continuing, then only Approved G&A
                  Expenses actually paid by Borrower for such period, (xi) goods
                  and services Taxes, (xii) cash reserves at no time exceeding
                  $100,000 to be used by Borrower for general corporate purposes
                  and (xiii) any other amounts approved by Lender in its sole
                  and absolute discretion. Such Disbursement Request shall set
                  forth in detail the calculation of each such item requested to
                  be paid and shall otherwise contain any information required
                  pursuant to this Section 3.4(b). Lender shall be protected in
                  all instances in paying the foregoing amounts based upon such
                  Disbursement Request without any need whatsoever to
                  independently verify such requested amounts. In addition if


                                       24


                  any material Default or any Event of Default has occurred and
                  is continuing, and notwithstanding the information provided by
                  Borrower, Lender shall have the right (it being hereby agreed
                  that Lender is not obligated to make such payment, is not
                  responsible to Borrower or any other Person for making or
                  failing to make any such payment and is not responsible for
                  seeing to the application of any such payment) to apply any
                  amount, in its sole discretion, from time to time in the
                  Collateral Account to the payment of any of the previously
                  specified payment items in the priority order in which such
                  specified payment items are listed.

         (c)      After receipt of a Disbursement Request meeting the
                  requirements of Section 3.3(b) by Borrower setting forth in
                  reasonable detail the proposed use of such funds and provided
                  that no material Default or Event of Default has occurred and
                  is continuing, Lender shall transfer to an account designated
                  by Borrower on the requested date for such disbursement (which
                  date must be at least three (3) Business Days after receipt by
                  Lender of the Disbursement Request) any or all of the funds in
                  the Collateral Account. Borrower hereby authorizes Lender in
                  Lender's sole discretion, to pay amounts either to Borrower or
                  to the applicable vendors or other payees directly. Upon
                  submission of a Disbursement Request relating to Approved
                  Lease Operating Expenses, Approved Third-Party Transportation,
                  Gathering and Marketing Expenses and Approved Capital
                  Expenditures, and upon Lender's satisfaction, in its sole
                  discretion, that such requested disbursement is to be made in
                  satisfaction of an Approved Lease Operating Expenses, Approved
                  Third-Party Transportation, Gathering and Marketing Expenses
                  or Approved Capital Expenditures or Approved G&A Expenses, and
                  subject to the other provisions hereof and in accordance with
                  Applicable Laws, and provided that no material Default or
                  Event of Default has occurred and is continuing, Lender shall
                  make the disbursement subject to the conditions in this
                  Agreement and the order of priority set forth in the second
                  paragraph of this Section providing that the foregoing shall
                  not be required. Lender shall have no obligation to make any
                  payment from the Collateral Account in respect of any amount
                  provided in this Section to the extent there are not
                  sufficient funds in the Collateral Account to make any such
                  payment.

3.5      Closing Fee.Borrower agrees to pay to Lender on the Effective Date a
         non-refundable closing fee in an amount equal to $75,000.

3.6      Engineering Fee. For so long as the Commitment is outstanding, Borrower
         agrees to pay to Lender on January 1 of each calendar year (commencing
         January 1, 2002) a non-refundable annual engineering fee in an amount
         equal to $20,000.

                                   Article 4
                           TAXES AND OTHER PROVISIONS

4.1      Payments, Computations, etc. All payments to be made to Lender by
         Borrower pursuant to this Agreement or any other Loan Document shall be
         made by Borrower to Lender, without setoff, deduction or counterclaim
         (except as may be required by Applicable Law), not later than 12:00
         p.m., Calgary, Alberta time, on the date due, in same day or
         immediately available funds, to such account as Lender shall specify


                                       25


         from time to time by notice to Borrower. Funds received after that time
         shall be deemed to have been received by Lender on the next succeeding
         Business Day. All interest and fees shall be computed on the basis of
         the actual number of days (including the first day but excluding the
         last day) occurring during the period for which such interest or fee is
         payable over a year comprised of 365 days. Whenever any payment to be
         made shall otherwise be due on a day which is not a Business Day, such
         payment shall be made on the next succeeding Business Day and such
         extension of time shall be included in computing interest and fees, if
         any, in connection with such payment.

4.2      Setoff. In addition to any rights and remedies of Lender provided by
         Applicable Law, if a Default or an Event of Default has occurred and is
         continuing or the Obligations have been accelerated, Lender is
         authorized at any time and from time to time, without prior notice to
         Borrower, any such notice being waived by Borrower to the fullest
         extent permitted by Applicable Law, to setoff and apply any and all
         deposits (general or special, time or demand, provisional or final) at
         any time held by, and other indebtedness at any time owing by, Lender
         or any of its Affiliates, including, amounts pursuant to any
         preferential right to purchase or market Subject Hydrocarbons and any
         Borrower Hedging Agreements against any and all Obligations owing to
         Lender and any of its Affiliates, now or hereafter existing,
         irrespective of whether or not Lender shall have made demand under this
         Agreement or any Loan Document and although such Obligations may be
         contingent or unmatured, and, as security for such Obligations,
         Borrower hereby grants to Lender and any of its Affiliates a continuing
         security interest in, any and all balances, credits, deposits or moneys
         of Borrower then or thereafter maintained with Lender. Lender agrees
         promptly to notify Borrower after any such setoff and application made
         by Lender; provided, however, that the failure to give such notice
         shall not affect the validity of such setoff and application. The
         rights of Lender and its Affiliates under this Section 4.2 are in
         addition to other rights and remedies (including other rights of setoff
         under Applicable Law or otherwise) which Lender and its Affiliates may
         have.

4.3      Right of First Refusal - Proposed Undertakings. This Section 4.3 shall
         be in full force and effect until the termination of the Commitment
         under this Agreement and the full and final satisfaction in cash of all
         outstanding Obligations.

         (a)      In the event that Borrower or any of its Subsidiaries intends
                  to obtain any financing for the purpose of exploring,
                  developing and producing Hydrocarbons from any Property
                  located within the Subject Interests (other than the Initial
                  Drilling Program) which is (i) in conformity with existing
                  field spacing rules, (ii) in compliance with the requirements
                  of Section 8.12, and (iii) which is not given more than a
                  nominal value in the current calculation of the Risked NPV10
                  (such proposed exploration, development and production
                  undertaking herein called the "Proposed Undertaking") and
                  prior to Borrower, or any such Subsidiary, approaching any
                  other Person with respect to such Proposed Undertaking,
                  Borrower first shall provide Lender with notice of its or its
                  Subsidiary's intent to enter into such Proposed Undertaking,
                  together with information relating to the terms, conditions,
                  feasibility and economics of such Proposed Undertaking,


                                       26


                  including an outline of the acreage and proposed leases for
                  the Proposed Undertaking, geological and engineering studies
                  and cost estimates, as well as any other information or data
                  which Lender may reasonably request in order for Lender to
                  adequately evaluate whether Lender would be willing to make a
                  Loan to finance such Proposed Undertaking.

         (b)      Lender shall have the option to make a Loan to finance the
                  Proposed Undertaking (the "Additional Development Program
                  Option") which shall be subject to all of the same terms and
                  conditions (including the Cash Flow from Override) as the then
                  current Subject Interests. Lender shall then have a period of
                  no less than 30 days after the delivery of such notice and all
                  such information and data in order to determine whether Lender
                  shall make a Loan to finance, in whole or in part, such
                  Proposed Undertaking and the amount of such Loan. As soon as
                  Lender reaches its decision, but no later than the end of such
                  period, Lender shall inform Borrower or its Subsidiary, as
                  applicable, whether it will participate in such Proposed
                  Undertaking. Lender shall have no obligation to fund any
                  Proposed Undertaking and may choose to fund (or not to fund)
                  any Proposed Undertaking without limiting its Additional
                  Development Program Option with respect to any future Proposed
                  Undertakings.

(c)               If, and only if, Lender declines to finance such Proposed
                  Undertaking, Borrower or its Subsidiary, as applicable, shall
                  be permitted to approach other Persons with respect to such
                  Proposed Undertaking, provided that the Proposed Undertaking
                  offered to such other Persons be on economic terms
                  substantially similar to those offered to Lender.

         (d)      In the event that another Person is willing to fund such
                  Proposed Undertaking pursuant to economic terms which are not
                  more onerous to Borrower or its Subsidiary, as applicable,
                  than the economic terms offered by Lender for such Proposed
                  Undertaking, then upon delivery of written evidence to Lender,
                  in form and substance acceptable to Lender, in its reasonable
                  discretion, of the funding by such Person of the Proposed
                  Undertaking, Lender shall release its Liens and reconvey its
                  Override on that portion, and only that portion, of the
                  Subject Interests covered by such Proposed Undertaking and
                  permit Borrower or its Subsidiary, as applicable, to commence
                  the Proposed Undertaking. In the event that such Proposed
                  Undertaking is not commenced as set forth in the preceding
                  sentence within a reasonable period of time (not to exceed 180
                  days from receiving notice under Section 4.3(a) and such
                  reasonable additional period as may be required in order to
                  obtain any required Approval or access to commence the conduct
                  of such operation), then upon fifteen (15) days prior notice
                  from Lender to Borrower and failure to convene the operations
                  by that time, that portion of the Subject Interests covered by
                  such Proposed Undertaking shall immediately be subjected to
                  first priority, perfected Liens (subject to Permitted Liens)
                  in favor of Lender, including amendments to the Debenture as
                  may be required by Lender covering such portion of the Subject
                  Interests covered by the Proposed Undertaking and granting to
                  Lender the Override on such Properties.

                                       27


         (e)      Borrower acknowledges, and agrees to cause each of its
                  Subsidiaries to acknowledge, that the granting of this right
                  of first refusal was a material condition and consideration
                  for the extension of the Commitment and that Lender would not
                  have extended the Commitment except for the granting of this
                  right of first refusal with respect to Proposed Undertakings.

4.4      Right of First Refusal-Proposed Non-Subject Interest Undertaking. This
         Section 4.4 shall be in full force and effect until the termination of
         the Commitment under this Agreement and the full and final satisfaction
         in cash of all outstanding Loan Obligations.

         (a)      In the event that Borrower or any of its Subsidiaries, if any,
                  intend to obtain any financing for the purpose of acquiring,
                  exploring, developing, producing or marketing Hydrocarbons for
                  any Property not located within the Subject Interests (such
                  proposed undertaking the "Proposed Non-Subject Interest
                  Undertaking") and prior to Borrower or such Subsidiary
                  approaching any other Person with respect to such Proposed
                  Non-Subject Interest Undertaking of Borrower or such
                  Subsidiary first shall provide Lender with notice of its
                  intent to enter into such Proposed Non-Subject Interest
                  Undertaking, together with information relating to the terms,
                  conditions, feasibility and economics of such Proposed
                  Non-Subject Interest Undertaking, including, geological and
                  engineering studies and cost estimates, as well as any other
                  information or data which Lender may reasonably request in
                  order for Lender to adequately evaluate whether Lender would
                  be willing to make a Loan to finance such Proposed Non-Subject
                  Interest Undertaking.

         (b)      Lender shall have an option to make a Loan to finance such
                  Proposed Non-Subject Interest Undertaking. Lender shall then
                  have a period of no less than thirty (30) days after the
                  delivery of such notice and all such information and data in
                  order to determine whether Lender shall make a Loan to
                  finance, in whole or in part, such Proposed Non-Subject
                  Interest Undertaking and the amount of such Loan. Borrower
                  agrees, and agrees to cause each of its Subsidiaries to agree,
                  to enter into good faith negotiations with Lender with respect
                  to mutually agreeable terms and conditions for the financing
                  of such Proposed Non-Subject Interest Undertaking. As soon as
                  Lender reaches its decision, but no later than the end of such
                  period, Lender shall inform Borrower or such Subsidiary
                  whether it chooses to participate in such Proposed Non-Subject
                  Interest Undertaking. Lender shall have no obligation to fund
                  any Proposed Non-Subject Interest Undertaking under this right
                  of first refusal and may choose to fund (or not to fund) any
                  Proposed Non-Subject Interest Undertaking without limiting its
                  right of first refusal with respect to any future Proposed
                  Non-Subject Interest Undertakings.

         (c)      If Lender declines to finance such Proposed Non-Subject
                  Interest Undertaking, Borrower or such Subsidiary shall be
                  permitted to approach other Persons with respect to such
                  Proposed Non-Subject Interest Undertaking. Lender agrees to
                  provide Borrower with no interest letters and releases, in
                  form satisfactory to Lender and Borrower, in respect of such
                  Proposal Non-Subject Interest Undertakings if required.

                                       28


         (d)      Borrower acknowledges, and agrees to cause each of its
                  Subsidiaries to covenant and acknowledge, that the granting of
                  this right of first refusal was a material condition and
                  consideration for the extension of the Commitment and that
                  Lender would not have extended the Commitment except for the
                  granting of this right of first refusal.

4.5      Use of Proceeds.


         (a)      Borrower shall apply the proceeds of the initial Loan (i) up
                  to $27,000,000 to repay in full existing Indebtedness of
                  Borrower to Canadian Imperial Bank of Commerce howsoever
                  arising, (ii) up to $40,000,000 minus the amount actually
                  drawn to repay Canadian Imperial Bank of Commerce pursuant to
                  clause (i) above for working capital and general corporate
                  purposes, including distributions to Abraxas Petroleum
                  Corporation and (iii) up to $85,000,000 to finance the
                  drilling of wells and related activities such as land, seismic
                  and infrastructure pertaining to existing and newly-acquired
                  Properties as set forth in the Development Plan.

(b)               Borrower shall apply the proceeds of each Loan after the
                  initial Loan (i) to develop the Subject Interests in
                  accordance with the Development Plan, (ii) for general
                  business purposes and working capital purposes of Borrower
                  consistent with the Development Plan, (iii) to pay costs, fees
                  and expenses associated with the closing of this Agreement,
                  (iv) to pay interest accrued in connection with the Loan
                  Documents, and (v) in accordance with Schedule II.

                                   Article 5
                               CONDITIONS TO LOANS

5.1      Initial Loan. The obligation of Lender to fund any Loan hereunder shall
         be subject to the prior or concurrent satisfaction of each of the
         conditions precedent set forth in this Article 5.

5.2      Resolutions, etc. Lender shall have received from Borrower and each of
         its Subsidiaries, if any, a certificate, dated the date of the initial
         Loan, of its Secretary or Assistant Secretary, as applicable, as to (i)
         resolutions of its directors 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; (ii) its Constating
         Documents, (iii) 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, upon which certificate Lender may conclusively
         rely until it shall have received a further certificate of one of its
         officer canceling or amending such prior certificate, and (iv) that
         Borrower and all of its Subsidiaries, if any, are in compliance with
         all of the covenants and agreements contained in this Agreement or any
         other Loan Document. Lender shall have received from Borrower and each
         of its Subsidiaries, if any, certificates of existence and good
         standing provided by the appropriate governmental officer in its
         jurisdiction of incorporation or formation and, in the case of
         certificates of good standing, in each jurisdiction in which its
         business is conducted.

                                       29


5.3      Override Royalty Agreement. Lender shall have received counterparts of
         (a) the Override Royalty Agreement No. 1 dated as of the date hereof,
         duly executed by Borrower, and (b) the Override Royalty Agreement No. 2
         dated as of the date hereof, which shall at all times be subject to
         Article 10.

5.4      Security. As security for the present and future Indebtedness of
         Borrower to Lender (and for the purpose of Hedging Obligations, to any
         Affiliate of Lender), Lender shall have received counterparts of the
         following documents, each dated as of the date hereof, duly executed by
         Borrower:

         (a)      a demand Debenture in the amount of $200,000,000 from
                  Borrower, together with a Debenture Pledge Agreement in
                  respect thereof, providing for a first priority Lien in all of
                  Borrower's present and after-acquired Property, a notice of
                  which is to be registered in all appropriate jurisdictions;

         (b)      when requested by Lender such documents and instruments
                  providing a fixed and specific Lien in accordance with the
                  provisions of the this Agreement and the other Loan Documents;
                  and

         (c)      evidence of the completion (or satisfactory arrangements for
                  the completion) of all recordings and filings of the
                  above-noted security documents in such offices in Canada or
                  any province thereof as may be necessary or, in the reasonable
                  opinion of Lender, desirable effectively to create a valid and
                  perfected Lien (subject to Permitted Liens) against the
                  Properties purported to be covered thereby.

5.5      Release and Discharge Lender shall have received executed copies of
         statements, if any, necessary to release and discharge of all Liens and
         other rights of any Person, including Canadian Imperial Bank of
         Commerce, in any Property described in the Debenture (other than
         Permitted Liens).

5.6      After-Acquired Property. All Property acquired by or on behalf of
         Borrower or any of its Subsidiaries, if any, after the date of
         execution of the security documents listed in Section 5.4 which forms
         part of the Property of Borrower or any of its Subsidiaries, if any,
         will be subject to the Liens constituted by the security documents
         listed in Section 5.4 without any further conveyance, mortgage, pledge,
         charge, assignment or other act on the part of the Parties.

5.7      Memorandum of Purchase Contracts. Lender shall have received any
         requested memorandum of agreement relating to the purchase of
         Hydrocarbons attributable to the Subject Interests executed by
         Borrower, in form and substance satisfactory to Lender in its sole
         discretion.

5.8      Opinion of Counsel. Lender shall have received an opinion dated the
         date hereof and addressed to Lender and its counsel from counsel to
         Borrower, substantially in the form of Exhibit C.

                                       30


5.9      Certified Copy of Farmout Amending Agreement. Lender shall have
         received a certified copy of an amending agreement dated on or before
         December 20, 2001 between Borrower and Canadian Abraxas Petroleum Ltd.,
         amending the Farmout Agreement between the same parties dated July 31,
         2001, in form and substance satisfactory to Lender.

5.10     Development Plan and Schedules. Lender shall have received (i) a
         Development Plan covering the Subject Interests in substance acceptable
         to Lender, (ii) a description of Initial Subject Interests, in form and
         substance acceptable to Lender in its sole discretion, and (iii) a "Use
         of Proceeds" schedule, in form and substance acceptable to Lender in
         its sole discretion.

5.11     Evidence of Insurance. Lender shall have received certificates of
         insurance satisfactory to it evidencing the existence of all insurance
         required to be maintained by Borrower and its Subsidiaries, if any, as
         applicable, by this Agreement and the other Loan Documents, which
         insurance, in each case, shall list Lender as "additional insured" and
         "sole loss payee with respect to first party claims" and be
         satisfactory to Lender in all respects in its sole discretion. The
         deductible of each such insurance policy shall be in an amount not to
         exceed $25,000 per occurrence.

5.12     Approvals. Borrower shall have obtained all necessary Approvals from
         all Governmental Agencies and from any other Persons relating to the
         Initial Subject Interests and the related Subject Hydrocarbons or
         pertaining to the Loan Documents, in form and substance satisfactory to
         Lender in its sole discretion. Lender shall have received copies of all
         such Approvals and such Approvals shall be in full force and effect on
         the Effective Date, and Lender shall have received a certificate to
         that effect signed by an Authorized Officer of Borrower.

5.13     Compliance with Loan Documents. Borrower shall have performed all
         agreements and covenants required by this Agreement and by the other
         Loan Documents to be performed by Borrower, and all representations and
         warranties herein and in the other Loan Documents made by Borrower, or
         any other Obligor shall be true and correct as of the Effective Date,
         and Lender shall have received a certificate to that effect signed by
         an Authorized Officer of Borrower.

5.14     No Default. No Default or Event of Default shall have occurred and be
         continuing on the Effective Date either before or after giving effect
         to this Agreement and the other Loan Documents, and Lender shall have
         received a certificate to that effect from an Authorized Officer of
         Borrower.

5.15     Engineering. Lender shall have received an Independent Reserve Report
         for the Subject Interests dated as of January 1, 2001, in form and
         substance, and with conclusions, satisfactory to Lender, and, since the
         date of such report, there has been no material change in respect
         thereof. Lender also shall have received all requested information
         regarding the past operating results of the Subject Interests, the
         current operation of the Subject Interests, Borrower's internal
         accounting, engineering and production monitoring system, projections
         of future operating results and the basis for such projections and all


                                       31


         other reasonably requested information, all in form, substance and, if
         applicable, with conclusions, satisfactory to Lender, in its sole
         discretion.

5.16     Environmental. Lender shall have received an environmental review,
         including environmental reports (each report to be prepared by a
         reputable independent consultant acceptable to Lender), relating to all
         or any part of the Subject Interests, each in form and substance, and
         with conclusions satisfactory to Lender in its sole discretion, and
         since the date of such review, there has been no material change in
         respect thereof. Lender shall have also received an Environmental
         Certificate.

5.17     Officer's Certificate.  Lender shall have received a Title Certificate.

5.18     Release of Liens. Lender shall have received evidence, in form and
         substance satisfactory to Lender, in its sole discretion, of the
         release of any and all Liens (other than Permitted Liens) to the extent
         either (i) filed of record or (ii) Borrower has Knowledge of any such
         Liens, including, mechanic's liens, materialmen's liens and other
         similar liens or encumbrances, which encumber the Subject Interests.

5.19     Closing Fees, Expenses, etc. Lender shall have received all fees, costs
         and expenses due and payable pursuant to Section 3.5 or otherwise and
         all amounts invoiced pursuant to Section 12.3.

5.20     ISDA Master Agreement. Borrower shall have entered into the ISDA Master
         Agreement.

5.21     Documents. Lender shall have received a list of each Transportation
         Agreement to be attached to this Agreement as Schedule VI and Borrower
         shall provide access to Lender, upon request by Lender, to all other
         documents evidencing assignment of all Oil and Gas Leases, all right,
         title and interest in and to the Transportation Agreements, and all
         other interests represented by Borrower to be part of the Subject
         Interests.

5.22     Other Legal Matters. All legal matters in connection with the title to
         the Subject Interests and the Subject Hydrocarbons shall be approved by
         Lender, and there shall have been furnished to Lender by Borrower at
         Borrower's expense, such title opinions, agreements, other opinions of
         counsel, and other records and information, including, evidence of any
         ratification documents, participation agreements, letter of
         understanding from any interest owner, as it may reasonably have
         requested for that purpose, in form and substance satisfactory to
         Lender, in its sole discretion.

5.23     All Loans. The obligation of Lender to fund any Loan on the occasion of
         any Loan (including the initial Loan) shall be subject to the
         satisfaction of each of the conditions precedent set forth in this
         Section 5.23.

         (a)      Compliance with Warranties, No Default, etc. Both before and
                  after giving effect to any Loan the following statements shall
                  be true and correct: (i) the representations and warranties
                  set forth in Article 6 (excluding, however, those contained in
                  Section 6.8) shall be true and correct with the same effect as
                  if then made (unless stated to relate solely to an earlier


                                       32


                  date, in which case such representations and warranties shall
                  be true and correct as of such earlier date), (ii) except as
                  disclosed by Borrower to Lender pursuant to Section 6.9 (A) no
                  labor controversy, litigation, arbitration or governmental
                  investigation or proceeding shall be pending or, to the
                  Knowledge of Borrower, threatened against Borrower which might
                  materially adversely affect Borrower's consolidated business,
                  operations, assets, revenues, properties or prospects or which
                  purports to affect the legality, validity or enforceability of
                  this Agreement or any other Loan Document, and (B) no
                  development shall have occurred in any labor controversy,
                  litigation, arbitration or governmental investigation or
                  proceeding disclosed pursuant to Section 6.9 which might
                  materially adversely affect the consolidated businesses,
                  operations, assets, revenues, properties or prospects of
                  Borrower; and (iii) no Default or Event of Default shall have
                  then occurred and be continuing, and the Borrower shall not
                  then be in material violation of any Applicable Law.

         (b)      Loan Request. Lender shall have received a Loan Request for
                  such Loan in accordance with Section 2.3. Each of the delivery
                  of a Loan Request and the acceptance by Borrower of the
                  proceeds of such Loan shall constitute a representation and
                  warranty by Borrower that on the date of such Loan (both
                  immediately before and after giving effect to such Loan and
                  the application of the proceeds thereof) the statements made
                  in Section 5.23(a) are true and correct. A Loan Request, when
                  given by Borrower, will be irrevocable and will oblige
                  Borrower to take the action contemplated herein and therein on
                  the date specified therein.

         (c)      Satisfactory Legal Form. All documents executed or submitted
                  pursuant hereto by or on behalf of Borrower shall be
                  satisfactory in form and substance to Lender; Lender and its
                  counsel shall have received all information, Approvals,
                  opinions, documents or instruments as Lender may reasonably
                  request.

                                   Article 6
                         REPRESENTATIONS AND WARRANTIES

6.1      Representations. In order to induce Lender to enter into this Agreement
         and to make Loans hereunder, Borrower represents and warrants unto
         Lender as set forth in this Article 6.

6.2      Organization. Borrower is a corporation validly organized and existing
         under the laws of the Province of Alberta, is duly qualified to do
         business and is as an extra-provincial corporation in each jurisdiction
         where the nature of its business requires such qualification, including
         British Columbia and the Northwest Territories and has full power and
         authority and holds all requisite Approvals to enter into and perform
         its Obligations under this Agreement, and each other Loan Document to
         which each is a party and to own and hold under lease its property and
         to conduct its business substantially as currently conducted by it.

                                       33


6.3      Due Authorization, Non-Contravention, etc. Borrower has the full legal
         power, right and capacity to enter into and perform this Agreement and
         the other Loan Documents and to sell and convey the Override. Borrower
         has the full legal power, right and capacity to enter into and perform
         the Loan Documents. 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 action, and do not (i) contravene
         Borrower's Constating Documents, (ii) contravene or result in any
         violation of or default under any Applicable Law or any material
         contract to which Borrower is a party or any material restriction,
         court decree or order, in each case binding on or affecting Borrower or
         any Properties, businesses, assets or revenues of Borrower; or (iii)
         result in, or require the creation or imposition of, any Lien on
         (except for the Liens created by the Loan Documents) any of Borrower's
         Properties, businesses, assets or revenues.

6.4      Government Approval, Regulation, etc. No authorization or Approval or
         other action by, and no notice to or filing with, any Governmental
         Agency or other Person is required to be obtained by Borrower for the
         due execution, delivery or performance by Borrower of this Agreement or
         any other Loan Document. Borrower does not conduct any business, or
         derive any revenues from any operations, outside the Provinces of
         Alberta and British Columbia or the Northwest Territories. Borrower
         does not have any business related to, or derive any revenue from, the
         production or marketing of Hydrocarbons outside the Provinces of
         Alberta and British Columbia or the Northwest Territories.

6.5      Validity, etc. This Agreement and each other Loan Document executed by
         Borrower constitute, the legal, valid and binding obligations of
         Borrower enforceable in accordance with their respective terms, in each
         case subject to the effect of any applicable bankruptcy, insolvency,
         reorganization, moratorium or similar laws affecting creditors' rights
         generally.

6.6      Financial Information. The financial statements of Borrower and Abraxas
         Petroleum Corporation and any related statements of earnings and cash
         flow, copies of which have been furnished to Lender, including the
         information furnished to Lender have been prepared in accordance with
         GAAP consistently applied, and present fairly the consolidated
         financial condition of the Persons covered thereby as at the dates
         thereof and the results of their operations for the periods then ended.

6.7      No Material Adverse Change. Since the date of the financial statements
         described in Section 6.6, there has been no material adverse change in
         the financial condition, operations, business, Properties or prospects
         of either Borrower or its Subsidiaries, taken as a whole.

6.8      Litigation, Labor Controversies, etc. There is no pending or, to the
         Knowledge of Borrower, threatened litigation, action, proceeding or
         labor controversy affecting Borrower or any of its Subsidiaries or any
         of their respective Properties, businesses, assets or revenues, or the
         Subject Interests, which may materially adversely affect the financial
         condition, operations, assets, business, properties or prospects of
         Borrower or such Subsidiary or the Subject Interests or which purports
         to affect the legality, validity or enforceability of this Agreement or
         any other Loan Document, except as disclosed in the Disclosure


                                       34


         Schedule.

6.9      Subsidiaries. Borrower has no Subsidiaries.

6.10     Borrower's Shares. All of the issued and outstanding shares of Borrower
         are legally and beneficially directly or indirectly owned by Abraxas
         Petroleum Corporation.

6.11     Subject Interests. The descriptions attached to Schedule I completely
         and correctly describe the Subject Interests. The representations and
         warranties of Borrower in the Override Royalty Agreement are true and
         correct in all respects as of the dates made or deemed made, and as of
         the Effective Date, Borrower's ownership of the Subject Interests
         entitles Borrower and such Subsidiary to a share of all Hydrocarbons
         produced from or attributable to the Oil and Gas Leases located on or
         under any of the lands described in Schedule I, and of the proceeds of
         such production, after giving effect to and/or deducting all applicable
         royalties, overriding royalties and other burdens or payments out of
         production (except the Override), which is not less than the respective
         net revenue interests identified on Schedule I and obligates Borrower
         to pay a share of all costs of operation and development of such Oil
         and Gas Leases which is not greater than the respective working
         interests identified on Schedule I. Borrower has good and marketable
         title to its Properties (including all Subject Interests) free and
         clear of all Liens, except for Permitted Liens. The Override Royalty
         Agreement will assign to Lender good and marketable title to the
         Override, free and clear of any Lien, except for Permitted Liens. Each
         lease and other interest in the Subject Interests and the Override is
         valid and in full force and effect, all ad valorem taxes, rentals,
         royalties and other amounts in respect thereof which are due, or have
         become due, have been paid and no default has occurred in respect of
         any such lease or interest which would have a material adverse effect
         on the Override. The Subject Interests are not subject to any tax or
         common law partnership, other than Permitted Liens. Borrower is the
         legal and beneficial owner of the right, title and interest to the
         Subject Interests more fully described on Schedule I.

6.12     Oil and Gas Leases. Each Oil and Gas Lease, and other interests
         described in Schedule I is valid and subsisting and in full force and
         effect, insofar as it covers or relates to the interests in land
         referred to or described in Schedule I as covered thereby; all material
         agreements, contracts, leases, permits, easements, rights-of-way, and
         other surface use rights necessary to own, maintain and operate such
         Oil and Gas Leases are in full force and effect and no material breach
         or default exists under any of such leases, agreements, contracts,
         permits, easements, rights-of-way or other rights. All rentals,
         royalties and taxes and other amounts due and payable under or in
         respect of the Oil and Gas Leases and other interests, or any of them,
         have been duly paid or provided for. No material default or event of
         default now exists under any of said leases and other interests and no
         material breach or default exists thereunder.

6.13     Preferential Rights. Except for: (i) the preferential purchase rights
         contained in Article 11 and the Override, (ii) the preferential
         purchase rights contained in the Joint Operating Agreements, and (iii)
         any preferential rights described in Schedule IV, there are no sale or
         use contracts or agreements, preferential purchase rights, calls,
         rights of first refusal or other similar rights or agreements in effect


                                       35


         relating to any of the Subject Interests or the properties burdened by
         the Override. No other Person has any contractual or other rights owed
         to it by Borrower which would restrict Borrower from honoring its
         obligations to deliver Hydrocarbons pursuant to the Loan Documents.

6.14     Balancing and Take-or-Pay Contracts. Except under any Joint Operating
         Agreement, none of the Subject Interests or any of the Subject
         Hydrocarbons is subject to or encumbered by a balancing,
         take-or-pay/make-up, deferred production, hydrocarbon banking or other
         arrangement under which one or more third parties may take a portion of
         the Subject Hydrocarbons without full payment therefor, in cash or
         immediately available funds at the market price or value thereof, as a
         result of Hydrocarbons having been taken from, or as a result of other
         actions or inactions with respect to, the Subject Interests or other
         properties.

6.15     Production Requirements. The production of all Hydrocarbons which have
         heretofore been produced from the Subject Interests is not in excess of
         allowable production quotas allowed or permitted to the Subject
         Interests by any applicable Governmental Agency so as to subject, after
         the Effective Date, any well located thereon, or Lender's interest in
         the production therefrom, to restrictions or penalties on allowables
         for overproduction.

6.16     Facilities. All wells, facilities, equipment and other Property of
         whatever kind or nature that are on the Subject Properties and are used
         in the operation of the Subject Interests are in good repair and
         working condition, normal wear and tear excepted, and have been
         designed, installed, and maintained in accordance with good industry
         standards and all applicable legal requirements; all wells on the
         Subject Interests are equipped for production and connected to a
         gathering system of sufficient capacity and pressure to permit, under
         ordinary operating conditions, the continuing delivery of Hydrocarbons
         in volumes equal to the volumes historically delivered; and all wells,
         facilities, equipment, and other Property of whatever kind or nature on
         the Subject Interests, together with those wells, facilities, equipment
         and other Property contemplated in the Development Plan, are, or will
         be subject to funding hereunder, capable of effecting the Development
         Plan. The facilities and arrangements by which Borrower disposes, or
         plans to dispose, of water produced either are sufficient or will be in
         compliance with the requirements of the Development Plan to dispose of
         the volumes of water currently, or expected to be, produced from the
         Subject Interests, and Borrower has no Knowledge or any reason to
         believe that the facilities and arrangements to be installed pursuant
         to the Development Plan will not be adequate in the future.

6.17     Broker's Fees. No Broker's Fee is owed by Borrower in respect of the
         matters provided for in this Agreement or any of the other Loan
         Documents.

6.18     Taxes. The Borrower has filed all federal, provincial and other tax
         returns and reports required by Applicable Law to have been filed by it
         and has paid all Taxes, assessments, fees and other governmental
         charges thereby shown to be owing, except any such Taxes, assessments,
         fees or charges which are being diligently contested in good faith by
         appropriate proceedings and for which adequate reserves in accordance
         with GAAP shall have been set aside on its books.

                                       36


6.19     Compliance with Laws. The Borrower (i) is not in violation of any
         Applicable Law of, or the terms of any license or permit issued by, any
         Governmental Agency, or (ii) has not failed to obtain any license,
         permit, franchise or other Approval necessary to ownership of any of
         its Properties or the conduct of its business except where such failure
         would not reasonably be expected to adversely affect Borrower.

6.20     Environmental Warranties. (i) All of the Subject Interests and
         associated facilities operated by Borrower has been, and continue to
         be, owned, leased or operated by Borrower in compliance with all
         material Environmental Laws; (ii) there have been no past, and there
         are no pending or, to the Knowledge of Borrower, threatened claims,
         complaints, notices or inquiries to, or requests for information
         received by, or known to, Borrower with respect to, any alleged
         violation of any Environmental Law with respect to the Subject
         Interests or associated facilities operated by Borrower; (iii) there
         are no pending or, to the Knowledge of Borrower, threatened claims,
         complaints, notices or inquiries to, or requests for information
         received by, or known to Borrower for potential liability under any
         Environmental Law or under any common law theories relating to
         operations or the condition of any of the lands comprising the Subject
         Interests (including underlying groundwater); (iv) to the Knowledge of
         Borrower, there have been no Releases of Hazardous Materials at, on or
         under the Subject Property, (v) Borrower has not been issued a notice
         of non-compliance and are in material compliance with all permits,
         certificates, approvals, licenses and other authorizations relating to
         environmental matters and necessary or desirable for its business and
         the operation of each of the Subject Interests; (vi) to the Knowledge
         of Borrower, none of the lands comprising the Subject Interests or any
         portion thereof are listed or proposed for listing on any federal or
         provincial list of sites requiring investigation or clean-up; (vii) to
         the Knowledge of Borrower, there are no underground storage tanks,
         active or abandoned, including petroleum storage tanks, on or under any
         of the lands comprising the Subject Interests; (viii) to the Knowledge
         of Borrower, Borrower has not directly transported or directly arranged
         for the transportation of any Hazardous Material (except crude oil
         and/or natural gas sold in the ordinary course of business or produced
         waters which has not created any material liability or obligation of
         Borrower) to any location which is listed or proposed for listing on
         any federal or provincial list or which is the subject of federal,
         provincial or local enforcement actions or other investigations which
         may lead to material claims against Borrower or any portion of any of
         the Subject Interests for any remedial work, damage to natural
         resources or personal injury; (ix) to the Knowledge of Borrower, there
         are no polychlorinated biphenyls, radioactive materials (other than
         naturally occurring radioactive material (NORM)) or friable asbestos
         present at any of the lands comprising the Subject Interests; and (x)
         to the Knowledge of Borrower, no condition exists at, on, under or in
         respect of any of the lands comprising the Subject Interests or any
         portion thereof which, with the passage of time, or the giving of
         notice or both, would give rise to material liability under any
         Environmental Law.

6.21     Accuracy of Information. All factual information heretofore or
         contemporaneously furnished by or on behalf of Borrower or Abraxas
         Petroleum Corporation in writing or otherwise to Lender for purposes of
         or in connection with this Agreement or any transaction contemplated
         hereby, including the Development Plan, the Independent Reserve Report


                                       37


         and factual data supporting any reserve reports and financial
         statements, and any aging of accounts payable and accounts receivable,
         is, and all other such factual information hereafter furnished by or on
         behalf of Borrower to Lender will be, true and accurate in every
         material respect on the date as of which such information is dated or
         certified and as of the date of execution and delivery of this
         Agreement by Lender, and such information is not, or shall not be, as
         the case may be, incomplete by omitting to state any material fact
         necessary to make such information not misleading. Borrower has no
         Knowledge of any omission of material fact which renders any such
         information incomplete or misleading in any way.

6.22     No Prohibition on Perfection. None of the terms or provisions of any
         indenture, mortgage, deed of trust, agreement or other instrument to
         which Borrower or any of its Subsidiaries, is a party or by which
         Borrower or any of its Subsidiaries, or the Property of Borrower or any
         of its Subsidiaries, is bound prohibit the filing or recordation of any
         of the Loan Documents or any other action which is necessary or
         appropriate in connection with the perfection of the Liens evidenced
         and created by any of the Loan Documents.

6.23     Solvency. Borrower is not "insolvent," as such term is used and defined
         in the Bankruptcy and Insolvency Act (Canada) or the Companies'
         Creditors Arrangement Act (Canada).

6.24     Insurance. Borrower has the benefit of the insurance coverage described
         in the certificates of insurance delivered pursuant to Article 5 and
         required to be maintained pursuant to Section 7.12.

6.25     No Default. No Default or Event of Default has occurred and is
         continuing.

6.26     Farmout Lands. To the best of Borrower's Knowledge, information and
         belief, there are no security registrations made against any of the
         "Farmout Lands" as described in the Farmout Agreement dated July 31,
         2001 between Borrower and Canadian Abraxas Petroleum Limited pursuant
         to the March 26, 1999 Abraxas Petroleum Corporation Indenture with
         Norwest Bank Minnesota, N.A. (now Wells Fargo) or the December 21, 1999
         Abraxas Petroleum Corporation et al Indenture with Firstar Bank, N.A.
         (collectively, the "Indentures") or otherwise, and if such
         registrations have been made, Borrower will cause such registrations to
         be discharged or to obtain no interest Letters from the Trustees
         pursuant to the Indentures.

                                   Article 7
                              AFFIRMATIVE COVENANTS

7.1      Affirmative Covenants. Borrower agrees with Lender that, until the
         unconditional and irrevocable payment in full in cash of all accrued
         and outstanding monetary Loan Obligations and the termination or
         expiration of the Commitment, Borrower will perform, or cause each of
         its Subsidiaries to perform, the obligations set forth in this Article
         7.

                                       38


7.2      Punctual Payment Borrower will pay or cause to be paid all Indebtedness
         and other Obligations payable under the Loan Documents punctually when
         due. Borrower will also pay or cause to be paid, promptly when due and
         in any event within 30 days of its payment due date, all accounts
         payable by Borrower, unless being contested in good faith by Borrower.

7.3      Financial Information, Reports, Notices, etc. Borrower will furnish, or
         will cause to be furnished, to Lender copies of the following financial
         statements, reports, notices and information:

         (a)      as soon as available and in any event within 60 days after the
                  end of each of the first three fiscal quarters of each fiscal
                  year of Borrower and Abraxas Petroleum Corporation,
                  unconsolidated balance sheets of Borrower and consolidated
                  balance sheet of Abraxas Petroleum Corporation as of the end
                  of such fiscal quarter and unconsolidated statements of
                  earnings and cash flow of Borrower and consolidated statements
                  of earnings and cash flow of Abraxas Petroleum Corporation 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, and any other financial records or reports of
                  Borrower or Abraxas Petroleum Corporation requested by Lender,
                  all prepared in accordance with GAAP, certified by an
                  Authorized Officer of Borrower and Lender, in its reasonable
                  discretion, shall have the right to employ, at Borrower's sole
                  expense, an independent accountant, acceptable to Lender in
                  its sole discretion, to independently verify the accuracy of
                  such financial statements;

         (b)      as soon as available and in any event within 120 days after
                  the end of each fiscal year of Borrower, a copy of the annual
                  audit report for such fiscal year for Borrower and Abraxas
                  Petroleum Corporation, including therein consolidated balance
                  sheets of Abraxas Petroleum Corporation as of the end of such
                  calendar year and consolidated statements of earnings and cash
                  flow of Borrower and its Subsidiaries for such calendar year
                  and a lease operating statement, including oil, gas and water
                  production, average prices received, and lease operating
                  costs, including transportation, gathering and marketing
                  costs, and all expenses on a well-by-well and asset-by-asset
                  basis, and any other financial records or reports of Borrower
                  requested by Lender, all financial statements prepared in
                  accordance with GAAP, in each case certified by the auditors
                  of Abraxas Petroleum Corporation (the "Accountant"), together
                  with a certificate from such Accountant to the effect that, in
                  making the examination necessary for the signing of such
                  annual report by such Accountant, they have not become aware
                  of any Default or Event of Default that has occurred and is
                  continuing, or, if they have become aware of such Default or
                  Event of Default, describing such Default or Event of Default
                  and the steps, if any, being taken to cure it;

         (c)      as soon as available and in any event within 30 days after the
                  end of each calendar month, (i) a monthly cash flow report of
                  Borrower for such month detailing sources and uses of funds,
                  (ii) a monthly compilation and aging of all accounts
                  receivables and accounts payable of Borrower for such month,
                  (iii) a monthly summary of capital expenditures of Borrower


                                       39


                  since the Effective Date and projections of capital
                  expenditures to be made in the future on a well-by-well and
                  asset-by-asset basis, (iv) a summary of net and gross general
                  and administrative expenses of Borrower for such month, and
                  (v) a lease operating statement for such month, including oil,
                  gas and water production, average prices received, and lease
                  operating costs, including transportation, gathering and
                  marketing costs, and all expenses on a well-by-well and
                  asset-by-asset basis, and any other financial records or
                  reports of Borrower reasonably requested by Lender, all
                  prepared in accordance with GAAP, certified by an Authorized
                  Officer of Borrower;

         (d)      on each Payment Date, a detailed calculation of Net Cash Flow
                  for the preceding three month period;

         (e)      as soon as available and in any event within 45 days after the
                  end of each calendar quarter of each calendar year of
                  Borrower, a summary of Capital Expenditures from the Effective
                  Date, detailed projections of all future Capital Expenditures
                  under the Development Plan, and a comparison of actual Capital
                  Expenditures by Borrower since the Effective Date to Approved
                  Capital Expenditures during the same period, and any other
                  records or reports of Borrower reasonably requested by Lender
                  in connection with Capital Expenditures, all prepared in
                  accordance with GAAP, certified by an Authorized Officer of
                  Borrower;

         (f)      as soon as possible and in any event within three (3) Business
                  Days after the occurrence of each Default or Event of Default,
                  a statement of an Authorized Officer of Borrower setting forth
                  details of such Default or Event of Default and the action
                  which Borrower has taken and/or proposes to take with respect
                  thereto;

         (g)      promptly upon receipt and in any event not later than three
                  (3) Business Days following such receipt, any information
                  concerning any actions, suits or proceedings by or before any
                  court, arbitrator or any Governmental Agency pending, or to
                  the Knowledge of Borrower threatened, against Borrower or any
                  of the Subject Interests, including any foreclosure
                  proceedings, if the aggregate amount of the claims under such
                  actions, suits or proceedings is greater than $50,000;

         (h)      as soon as available, and in any event within 30 days after
                  such reports become available, copies of all interim reserve
                  reports prepared by Borrower or any third-party engineer
                  relating to the Subject Interests;

         (i)      as soon as available, and in any event within 30 days of any
                  filing, copies of all federal income tax filings of Borrower,
                  and any schedules or exhibits attached thereto, certified by
                  an Authorized Officer of Borrower;

         (j)      at such times as may be requested by Lender, reports
                  concerning any change in methods of treatment or operation of
                  all or any wells on Subject Interests and production of
                  Subject Hydrocarbons, any drilling or development, any method
                  of secondary or tertiary recovery, or any other action with
                  respect to the Subject Interests, the decision as to which


                                       40


                  would reasonably be expected to materially increase or reduce
                  the quantity of Hydrocarbons ultimately recoverable from the
                  Subject Interests, or the rate of production therefrom, or
                  which would reasonably be expected to materially shorten or
                  lengthen the period of time required for amortization of the
                  Loans;

         (k)      as from time to time reasonably requested by Lender, copies of
                  any maps showing property lines and well locations, well logs,
                  core analysis, flow and pressure tests, crude oil and natural
                  gas analysis and casing programs and other technical
                  information related to the Subject Interests and the wells
                  thereon and the production therefrom in the possession, or
                  under the direct or indirect control, of Borrower;

         (l)      together with the delivery of the financial statements
                  delivered pursuant to Sections 7.3(a) and (b), a certificate
                  executed by an Authorized Officer of Borrower certifying that
                  Borrower is in compliance in all material respects with the
                  terms of this Agreement and the other Loan Documents, or if
                  not, specifying any exceptions thereto in reasonable detail;

         (m)      immediately, and in any event by the end of the following
                  Business Day, appropriate daily drilling reports and other
                  information as may be reasonably requested by Lender in
                  connection with the Subject Interests;

         (n)      no later than March 31 of each calendar year, reports in form
                  and substance satisfactory to Lender and using pricing,
                  engineering and other assumptions acceptable to Lender,
                  prepared by the Approved Independent Engineer, effective as of
                  January 1 of such calendar year, concerning (i) the quantity
                  of Subject Hydrocarbons economically recoverable based upon
                  the assumptions provided by Lender from the Subject Interests,
                  including the quantity of Proved Reserves, Proved Developed
                  Producing Reserves, Proved Developed Non-Producing Reserves,
                  Proved Undeveloped Reserves and Probable Reserves; (ii) the
                  Projected Income and Expense Attributable to the Subject
                  Interests; (iii) any change in methods of treatment or
                  operation of all or any wells on Subject Interests, any new
                  drilling or development, any method of secondary or tertiary
                  recovery, or any other action with respect to the Subject
                  Interests, the decision as to which would reasonably be
                  expected to increase or reduce the quantity of Subject
                  Hydrocarbons ultimately recoverable from the Subject
                  Interests, or the rate of production therefrom; and (iv) such
                  other information, technical or otherwise, as Lender may
                  reasonably request (each such report an "Independent Reserve
                  Report");

         (o)      promptly after June 30 of each calendar year (commencing with
                  the calendar year 2002), and in any event not later than
                  August 15 of such calendar year, a report in form and
                  substance satisfactory to Lender and using pricing,
                  engineering and other assumptions acceptable to Lender,
                  prepared by Borrower effective as of June 30 of such calendar
                  year updating the Independent Reserve Report and concerning
                  (i) the quantity of Subject Hydrocarbons economically


                                       41


                  recoverable based upon the assumptions provided by Lender from
                  the Subject Interests, including the quantity of Proved
                  Reserves, Proved Developed Producing Reserves, Proved
                  Developed Non-Producing Reserves, Proved Undeveloped Reserves,
                  Probable Reserves and Possible Reserves; (ii) the Projected
                  Income and Expense Attributable to the Subject Interests;
                  (iii) any change in methods of treatment or operation of all
                  or any wells on Subject Interests, any new drilling or
                  development, any method of secondary or tertiary recovery, or
                  any other action with respect to the Subject Interests, the
                  decision as to which would reasonably be expected to increase
                  or reduce the quantity of Subject Hydrocarbons ultimately
                  recoverable from the Subject Interests, or the rate of
                  production therefrom; and (iv) such other information,
                  technical or otherwise, as Lender may reasonably request (each
                  such report an "Internal Reserve Report");

         (p)      within a reasonable time of a reasonable request by Lender, an
                  Independent Reserve Report where there have been substantial
                  drilling operations, to be determined by Lender in its sole
                  discretion, in respect of the Property of Borrower in the
                  intermittent term between the delivery of the Independent
                  Reserve Reports delivered pursuant to Section 7.3(n); provided
                  that no such report will be requested more than three times
                  per calendar year;

         (q)      upon, but in no event later than ten (10) days after, any
                  responsible officer of Borrower becomes aware thereof, notice
                  of (i) any and all enforcement, cleanup, removal or other
                  governmental or regulatory actions instituted, completed or
                  threatened or other environmental claims against Borrower or
                  any of the Subject Interests pursuant to any applicable
                  Environmental Laws, or (ii) any environmental or similar
                  condition on any Property adjoining or in the vicinity of the
                  Property of Borrower that could reasonably be anticipated to
                  cause such Property or any part thereof to be subject to any
                  adverse restrictions on the ownership, occupancy,
                  transferability or use of such Property under any
                  Environmental Laws;

         (r)      promptly after (i) the sending or filing thereof, copies of
                  all reports which Borrower sends to any of its security
                  holders, (ii) the sending or filing thereof, all material
                  reports and registration statements which Borrower files with
                  any securities commission or any national securities exchange,
                  (iii) the filing thereof, copies of all tariff and rate cases
                  and other material reports filed with any Governmental
                  Authority (other than routine operating reports), and (iv)
                  receipt thereof, copies of all notices received from any
                  Governmental Authority concerning material noncompliance by
                  Borrower with any Applicable Laws; and

         (s)      with reasonable promptness, such other information respecting
                  the condition or operations, financial or otherwise, of
                  Borrower as Lender may from time to time reasonably request.

         All reports and other information herein described or otherwise
         described in this Agreement and all other reports which Borrower or
         Abraxas Petroleum Corporation is required to deliver pursuant to the
         terms and conditions hereof shall be prepared and delivered at the sole
         cost and expense of Borrower.

                                       42

7.4      Gathering and Transportation and Other Services. Subject to the
         provisions of this Section 7.4 with respect to Lender acting as
         Borrower's agent and Article 11 with respect to Lender's preferential
         right to purchase Subject Hydrocarbons, Borrower at its sole cost and
         expense (provided Lender shall pay its pro rata cost for transport,
         delivery and marketing of the Override Hydrocarbons by a Person which
         is not an Affiliate of Borrower) shall cause all Subject Hydrocarbons
         to be produced, delivered, gathered, compressed, treated, processed,
         fractionated and marketed, as a reasonably prudent operator and without
         discrimination as to Override Hydrocarbons and Residual Hydrocarbons.
         If Lender reasonably determines that Borrower is not causing any
         Subject Hydrocarbons to be gathered, compressed, treated, processed and
         fractionated to prepare such Subject Hydrocarbons to be marketed
         meeting required pipeline specifications, as a reasonably prudent
         operator, or that Borrower is not causing any Subject Hydrocarbons to
         be marketed as a reasonably prudent operator, then Lender may, in its
         sole discretion, act as agent with respect to such Subject Hydrocarbons
         to obtain or provide such services as would a reasonably prudent
         operator and in the manner set forth in this Agreement. Borrower will
         fully cooperate with Lender in its capacity as agent with respect to
         any such services.

7.5      Collateral Coverage Deficiency or Collateral Coverage Default. Borrower
         shall at all times maintain a Collateral Coverage Ratio of 150% or
         greater, but in any event, Borrower shall notify Lender promptly after
         becoming aware that any event, condition or circumstance which has
         occurred or exists which could reasonably be expected to become or
         constitute a Collateral Coverage Deficiency or a Collateral Coverage
         Default. Within 30 days of such notice or any notice of a Collateral
         Coverage Deficiency received by Borrower from Lender, Borrower must
         either at Lender's sole discretion (i) make a prepayment in conformity
         with Section 3.1 in an amount sufficient to eliminate the Collateral
         Coverage Deficiency, or (ii) pledge to Lender additional Properties
         which are acceptable to Lender, in its sole discretion, in a manner and
         in an amount sufficient to eliminate the Collateral Coverage
         Deficiency.

7.6      Use of Proceeds. Borrower shall (i) use the proceeds of the Loans as
         set forth in Section 4.5 and (ii) not use the proceeds of the Loans to
         pay any dividends or other distributions (except as provided under
         Section 8.5), to purchase any of its shares, to make any loans or
         advance any monies to any employee (excluding normal business and
         travel expense advances), consultant or agent of Borrower or to pay any
         cost, expense or otherwise, except in connection with Borrower's oil
         and gas exploration, development and production business consistent
         with the Development Plan, except as provided in Section 4.5(a)(ii).

7.7      Joint Operating Agreement. Except as may be otherwise approved by
         Lender, in its sole and absolute discretion, Borrower shall comply
         with, and perform any and all obligations and actions set forth in, the
         terms and provisions of the Joint Operating Agreements. Borrower shall
         provide prompt notice of the execution of all joint operating
         agreements relating to the Subject Interests or the Subject
         Hydrocarbons and, upon request by Lender, deliver copies of such joint


                                       43


         operating agreements relating to the Subject Interests or the Subject
         Hydrocarbons to which Borrower is a party duly certified by an
         Authorized Officer of Borrower as being true, correct and complete, and
         such agreements shall be in form and substance satisfactory to Lender.

7.8      Compliance with Laws. Borrower shall conduct all of its business
         within, and comply in all material respects with, all Applicable Laws,
         such compliance to include the maintenance and preservation of its
         existence and qualification as a corporation in good standing in its
         jurisdiction of incorporation and each other jurisdiction where it
         carries on business and all Approvals necessary to permit each of them
         to carry on their respective businesses.

7.9      Production-Related Expenses and Taxes. Borrower shall pay, promptly
         when due, and in any event within 90 days of its payment due date,
         except as contested in good faith by appropriate proceedings, all
         amounts in any way owed or owing with respect of the Subject Interests,
         including all production-related expenses. Borrower shall make all
         required income tax filings prior to any applicable filing deadlines.
         Borrower shall pay, promptly when due, and in any event within 30 days
         of its payment due date, except as contested in good faith by
         appropriate proceedings and for which adequate reserve in accordance
         with GAAP shall have been set aside in its books, together with
         interest and penalties thereon, if any, all Taxes imposed on Borrower
         or any of its Properties, (whether by operation of law or pursuant to
         this Agreement), including those set forth below: (i) all ad valorem
         taxes (or Taxes imposed in lieu thereof) imposed upon or assessed with
         respect to or charged against the Subject Interests or the Subject
         Hydrocarbons; and (ii) all severance taxes and other Taxes, duties,
         imposts, charges, levies and assessments of any kind or nature
         whatsoever, imposed upon or assessed with respect to or charged against
         the Subject Interests or the Subject Hydrocarbons.

7.10     Operation of Subject Interests. Borrower shall, as an independent
         contractor and as a prudent operator and at Borrower's sole cost and
         expense: (i) cause the Subject Interests to be developed, maintained
         and continuously operated for the production of Hydrocarbons in a good
         and workmanlike manner, as would a prudent operator (without regard to
         the existence of the Debenture or the Override), all in accordance with
         the Development Plan, generally accepted practices, applicable
         operating agreements, and Applicable Laws (including all Environmental
         Laws), and in a manner intended to be consistent with the production
         rate assumptions used in, and the levels defined in, the various
         production profile data provided to Lender; (ii) pay, or cause to be
         paid, promptly, and no longer than 90 days from the billing date for
         such amount, as and when due and payable, (A) all rentals, royalties
         and operating, development, production and transportation expenses and
         proceeds payable to the other mineral interest owners in respect of the
         Subject Interests or the Subject Hydrocarbons, excepting those being
         contested in good faith, (B) all production related-expenses and
         production-related Taxes incurred in or arising from the operation or
         development of the Subject Interests, or the producing, treating,
         gathering, or storing, of the Subject Hydrocarbons; excepting those
         being contested in good faith or those not yet payable in the ordinary
         course of business, and (C) all general and administrative related
         expenses and Taxes, excepting those being contested in good faith or
         those not yet payable in the ordinary course of business; (iii) cause


                                       44


         machinery, equipment and facilities necessary for the production of the
         Subject Hydrocarbons to be kept in working order as would a prudent
         operator (without regard to the existence of the Debenture) and
         necessary repairs, renewals, renovations, replacements, additions and
         improvements thereof or thereto to be promptly made; (iv) give or cause
         to be given to Lender written notice of every adverse claim or demand
         made by any Person (other than Lender or the buyer of Hydrocarbons)
         affecting the Subject Interests or the Subject Hydrocarbons which could
         have a material adverse effect on the Override or any portion thereof
         or on Borrower, and of any suit or other legal proceeding instituted
         with respect thereto, and cause necessary steps to be taken with
         reasonable diligence to protect and defend the Subject Interests and
         the Subject Hydrocarbons against any such adverse claim or demand which
         could have a material adverse effect on the Override or any portion
         thereof, or Borrower, including the employment of counsel for the
         prosecution or defense of litigation; and (v) cause the Subject
         Interests to be kept free and clear of Liens or overriding royalty
         interests other than Permitted Liens. Borrower shall maintain,
         preserve, protect and keep the Subject Interests in good repair,
         working order and condition, and make necessary and proper repairs,
         renewals and replacements so that (A) its business carried on in
         connection therewith may be properly conducted at all times and (B) the
         Subject Interests do not decline in value.

7.11     Development Plan. Except as may otherwise be approved by Lender, in its
         reasonable discretion, Borrower shall comply with, and perform any and
         all obligations and actions set forth in, the terms and provisions of
         the Development Plan. Lender and Borrower acknowledge and agree that
         operations in the field will not follow exactly the Development Plan.
         Adjustments and modifications to the various "Approved Expenditures"
         will be necessitated by the drilling and operating conditions
         encountered by Borrower and its contract operators. Additionally,
         upsets and emergencies can occur which will necessitate immediate
         action by Borrower in order to save lives and Property. Accordingly,
         Lender agrees to work closely with Borrower in promptly responding to
         such changed circumstances and necessary modification to the
         Development Plan. As soon as available, and in any event within 30 days
         after the end of each calendar quarter, Borrower shall deliver to
         Lender for review a proposed updated Development Plan. Within ten (10)
         Business Days of its receipt of the updated Development Plan, Lender
         will notify Borrower if such proposed Development Plan is acceptable.
         Upon the written notification of Borrower by Lender that the updated
         Development Plan is acceptable, such updated Development Plan will be
         deemed to replace the then current Development Plan for all purposes
         under the Loan Documents. Upon written notification to Borrower that
         such proposed Development Plan is not acceptable, Borrower shall have a
         period of five (5) Business Days to submit a revised updated
         Development Plan to Lender for review under the terms of this Section
         7.11.

7.12     Insurance. Borrower will maintain with financially sound and reputable
         insurance companies such insurance relating to the Subject Interests
         and the Subject Hydrocarbons in amount and type with such deductibles
         and against such risks, liabilities, casualties and contingencies as is
         maintained by prudent individuals in the industry (and which property
         insurance shall name Lender as an "additional insured" and as "sole


                                       45


         loss payee as to first party claims" as its interest may appear and
         shall contain endorsements to such policies providing that the insurer
         will notify Lender not less than 30 days prior to the expiration or
         termination of such policies), including (i) the insurance policy
         attached as Schedule III; and (ii) to the extent such insurance is
         carried by others engaged in the oil and gas exploration and production
         industry and in similar undertakings in the same general area or areas
         in which the Subject Interests are located, insurance on all personal
         property and fixtures used in connection with the operation of the
         Subject Interests, against loss or damage by fire, lightning, hail,
         tornado, explosion, hurricane and other similar risks, and (iii) OEE
         insurance during drilling operations. To the extent that Lender
         receives proceeds as a loss payee, such proceeds shall either be
         applied to the Obligations or to replace the damaged or lost Property,
         at Lender's sole discretion. Borrower shall furnish or cause to be
         furnished to Lender, upon the request of Lender (but no less than once
         each year), from time to time thereafter, a summary of the insurance
         coverage of Borrower in form and substance satisfactory to Lender in
         its sole discretion and copies of all applicable insurance policies.
         Unless otherwise specified, the deductible of each such insurance
         policy shall be in an amount not to exceed $25,000 per occurrence.

7.13     Accounting Principles. Unless otherwise specified, all accounting terms
         used herein or in any Loan Document shall be interpreted, and Borrower
         will, and will cause Abraxas Petroleum Corporation to, prepare all
         reports and financial statements and computations required under this
         Agreement or the other Loan Documents, all in accordance with GAAP
         consistently applied for all periods. Borrower will provide such
         information as Lender may request from time to time in accordance with
         accurate accounting standards customary and acceptable in the oil and
         gas exploration and production industry.

7.14     Books and Records; Inspections.


         (a)      Borrower will keep books and records which accurately reflect
                  all of their business affairs and transactions, or relate to
                  the Subject Interests, and permit Lender or any of its
                  representatives, at reasonable times and intervals, to visit
                  all of its offices and the Subject Interests, to discuss its
                  financial matters with its officers and independent public
                  accountant (and Borrower hereby authorize such independent
                  public accountant to discuss the financial matters of Borrower
                  with Lender or its representatives whether or not any
                  representative of Borrower is present) and to examine (and, at
                  the expense of Borrower, photocopy extracts from) any of its
                  books or other corporate records. Borrower shall pay any fees
                  and expenses incurred in connection with Lender's exercise of
                  its rights pursuant to this Section 7.14.

         (b)      Furthermore, Borrower will permit Lender, or its agents, at
                  the cost and expense of Borrower but at Lender's risk, to
                  enter upon the Subject Interests and all parts thereof, for
                  the purpose of investigating and inspecting the condition and
                  operation thereof, and shall permit reasonable access to the
                  field offices and other offices, including the principal place
                  of business, of Borrower to inspect and examine the Subject
                  Interests.

                                       46


7.15     Environmental Covenant. Borrower will (i) use and operate all of its
         facilities and Properties in material compliance with all Environmental
         Laws, keep all necessary Approvals relating to environmental matters in
         effect and remain in material compliance therewith, and handle all
         Hazardous Materials in material compliance with all applicable
         Environmental Laws, (ii) promptly cure and have dismissed with
         prejudice to the satisfaction of Lender any actions and proceedings
         relating to compliance with Environmental Laws, and diligently pursue
         the cure of any material underlying environmental problem which forms
         the basis of any such claim, complaint, notice or inquiry, and (iii)
         provide such information and certifications which Lender may reasonably
         request from time to time to evidence compliance with this Section
         7.15. Borrower will provide an Environmental Certificate to Lender at
         the same time as the delivery of the annual financial statements of
         Borrower referred to in Section 7.3(b).

7.16     Board of Directors Meetings. As soon as available and in any event 30
         days prior to any such meeting, Borrower shall deliver to Lender notice
         of any meeting of the Board of Directors of Borrower, any committee of
         Borrower or any meetings of the shareholders of Borrower. Borrower
         hereby grants to Lender the right to attend any such meetings as a
         non-voting observer.

7.17     Hedging Agreements. Promptly, and in any event within 10 days of
         receipt by Borrower of a written request from Lender, Borrower shall
         have entered into one or more swap, hedge, floor, collar or other
         similar agreements which are satisfactory to Lender at a price and for
         a term which is mutually acceptable to Borrower and Lender pursuant to
         the ISDA Master Agreement (each a "Initial Hedging Agreement") and
         satisfactory to Lender.

7.18     Protection of Security. Borrower shall do all things reasonably
         requested by Lender to protect, preserve and maintain the Subject
         Interests, the value thereof and the priority of the Liens granted in
         favour of Lender pursuant to the Loan Documents in relation to other
         Persons.

7.19     Grant Fixed Charge Security. If Lender considers it necessary for its
         adequate protection, Borrower, at the request of Lender, shall
         forthwith grant or cause to be granted to Lender, a fixed Lien (subject
         only to Permitted Liens which under Applicable Law rank in priority
         thereto) in such of Borrower's Property as Lender shall, in its sole
         discretion, determine as security for all then present and future
         Indebtedness of Borrower to Lender and its Affiliates under the Loan
         Documents. In this connection, Borrower shall:

         (a)      provide Lender with such information as is reasonably required
                  by the Agent to identify the property to be charged pursuant
                  to this Section 7.19;

         (b)      do all such things as are reasonably required to grant in
                  favour of Lender a fixed Lien (subject only to Permitted Liens
                  which under Applicable Law rank in priority thereto) in
                  respect of such property to be so charged pursuant to this
                  Section 7.19;

                                       47


         (c)      provide or cause to be provided to Lender with all corporate
                  resolutions and other action, as reasonably required, for
                  Borrower to grant to Lender a fixed Lien (subject only to
                  Permitted Liens which under Applicable Law rank in priority
                  thereto) in the property identified by Lender to be so
                  charged;

         (d)      provide Lender with such security instrument, legal opinions
                  and other documents which Lender, acting reasonably, deems are
                  necessary to give full force and effect to the provisions of
                  this Section 7.19;

         (e)      assist Lender in the registration or recording of such
                  agreements and instruments in such public registry offices in
                  Canada or any province thereof as Lender, acting reasonably,
                  deems necessary to give full force and effect to the
                  provisions of this Section 7.19; and

         (f)      pay all reasonable costs and expenses incurred by Lender in
                  connection with the preparation, execution and registration of
                  all agreements, documents and instruments, including any
                  amendments to any Loan Document, made in connection with this
                  Section 7.19.

7.20     Further Assurances.

         (a)      Borrower shall, upon the request of Lender, take such actions
                  and execute and deliver such documents and instruments as
                  Lender reasonably shall require to ensure that Lender shall,
                  at all times, have received currently effective duly executed
                  Loan Documents encumbering the Subject Interests of Borrower
                  constituting 100% of the Proven Reserves of Borrower to which
                  value is given in the determination of the then current Risked
                  NPV10 (with accompanying letters in lieu of transfer orders)
                  and satisfactory title evidence in form and substance
                  reasonably acceptable to Lender as to ownership of such the
                  Subject Interests.

         (b)      If Lender shall determine that, as of the date of any
                  determination of the Collateral Coverage Ratio, Borrower shall
                  have failed to comply with the Section 7.20(a), Lender may
                  notify Borrower in writing of such failure and, within 30 days
                  from and after receipt of such written notice by Borrower,
                  Borrower shall execute and deliver to Lender supplemental or
                  additional Loan Documents, in form and substance reasonably
                  satisfactory to Lender and its counsel, securing payment of
                  the Obligations and covering additional assets not then
                  encumbered by any Loan Documents (together with current
                  valuations, Independent Engineering Reports, and title
                  evidence applicable to the additional assets collaterally
                  assigned, each of which shall be in form and substance
                  reasonably satisfactory to Lender) such that Lender shall have
                  received currently effective duly executed Loan Documents
                  encumbering Subject Interests constituting 100% of the Proven
                  Reserves of Borrower to which value is given in the
                  determination of the then current Risked NPV10 (with
                  accompanying letters in lieu of transfer orders) and
                  satisfactory title evidence in form and substance acceptable
                  to Lender as to ownership of such Subject Interests.

                                       48


         (c)      Borrower will execute any and all further documents, financing
                  statements, agreements and instruments, and take all such
                  further actions (including the filing and recording of
                  financing statements, fixture filings, mortgages, debentures,
                  security agreements, pledge agreements, deeds of trust and
                  other documents), which may be required under any Applicable
                  Law, or which Lender may reasonably request, to effectuate the
                  transactions contemplated by the Loan Documents or to grant,
                  preserve, protect or perfect the Liens created or intended to
                  be created by the Loan Documents or the validity or priority
                  of any such Lien, all at the expense of Borrower. Borrower
                  agrees to provide to Lender, from time to time upon reasonable
                  request of Lender, information which is in the possession of
                  Borrower or otherwise reasonably obtainable by any of them,
                  reasonably satisfactory to Lender as to the perfection and
                  priority of the Liens created or intended to be created by the
                  Loan Documents.

         (d)      Borrower hereby authorizes Lender to file one or more
                  financing or continuation statements, and amendments thereto,
                  relative to all or any part of the Subject Interests or other
                  collateral granted by Borrower to Lender without the signature
                  of Borrower where permitted by Applicable Law. A carbon,
                  photographic or other reproduction of the Loan Documents or
                  any financing statement covering the Subject Interests or
                  other collateral granted by Borrower and any other Obligor to
                  Lender or any part thereof shall be sufficient as a financing
                  statement where permitted by Applicable Law.

(e)               Upon the acquisition of any new Properties by Borrower,
                  Borrower shall execute to and in favour of Lender, within 30
                  days of any such acquisition, a "Royalty Lands Addition
                  Schedule" which is attached to the Override Royalty
                  Agreements, describing the acquired Properties.

7.21     Override Records. Borrower shall at all times cause the Overrides
         described in the Override Royalty Agreements to be recorded in
         reasonable detail on the books and records of Borrower in respect of
         its Subject Interests and such books and records are to be maintained
         in accordance with prudent industry practice. Borrower will make such
         books and records available for review by Lender or its representatives
         during regular business hours at the offices of Borrower upon
         reasonable notice by Lender.

7.22     Title Deficiencies. Borrower agrees that it will use all commercially
         reasonable efforts to correct, explain or otherwise resolve to the
         satisfaction of the Lender, the title deficiencies that appear on the
         memorandum attached hereto as Schedule VIII on or prior to February 1,
         2002.

7.23     Further Due Diligence. Borrower agrees that prior to commencing
         operations on each well to be drilled pursuant to the Development Plan,
         it will provide Lender with reasonable title verification in respect of
         the Property on which such well is located, in form and scope
         satisfactory to Lender and such title verification shall be performed
         by a law firm acceptable to Lender, acting reasonably.



                                       49


                                    Article 8
                               NEGATIVE COVENANTS

8.1      Negative Covenants. Borrower agrees with Lender that, until the
         unconditional and irrevocable payment in full in cash of all accrued
         and outstanding monetary Loan Obligations and the termination or
         expiration of the Commitment, Borrower will or will cause each of its
         Subsidiaries to, perform, or not perform, as applicable, the
         obligations set forth in this Article 8.

8.2      Business Activities. Borrower will not engage, or permit any of its
         Subsidiaries to engage, in any business activity, except the acquiring,
         owning, operating, producing, gathering, treating, processing,
         transportation and marketing of Hydrocarbons and such activities as may
         be incidental or related thereto, without the prior written consent of
         Lender, in its sole and absolute discretion.

8.3      Indebtedness. Borrower will not, and will not permit any of its
         Subsidiaries to, create, incur, assume or suffer to exist or otherwise
         become or be liable in respect of any Indebtedness, other than, without
         duplication, (i) Indebtedness in respect of the Loans and other
         Obligations, (ii) unsecured Indebtedness incurred in the ordinary
         course of business (including (A) open accounts extended by suppliers
         on normal trade terms in connection with purchases of goods and
         services and (B) gas balancing, but excluding Indebtedness incurred
         through the borrowing of money or Contingent Liabilities) and (iii)
         Indebtedness not to exceed $100,000 for immediately required plugging
         and abandoning obligations, surety bonds, performance bonds and similar
         obligations and bonds; provided, however, that no Indebtedness
         otherwise permitted by clause (ii) above shall be permitted if, after
         giving effect to the incurrence thereof, any Default or Event of
         Default shall have occurred and be continuing.

8.4      Liens. Borrower will not, and will not permit any of its Subsidiaries
         to, create, incur, assume or suffer to exist any Lien upon any of its
         Property or revenues, whether now owned or hereafter acquired, except
         for Permitted Liens.

8.5      Restricted Payments, etc. On and at all times after the Effective Date,
         Borrower will not, and will not permit any of its Subsidiaries to,
         except as permitted pursuant to Section 4.5(a)(ii), declare, pay or
         make any dividend or distribution (in cash, property or obligations) on
         any interest or shares or capital stock (now or hereafter outstanding)
         of Borrower or on any interest or shares of any class or capital stock
         (now or hereafter outstanding) of Borrower or such Subsidiary or apply
         any of its funds, property or assets to the purchase, redemption,
         sinking fund or other retirement of any class of shares of any class or
         capital stock (now or hereafter outstanding) of Borrower or such
         Subsidiary, or warrants, options or other rights with respect to any
         interest or shares of any class or capital stock (now or hereafter
         outstanding) of Borrower or such Subsidiary, without the prior written
         consent of Lender, which consent may be withheld by Lender in its sole
         and absolute discretion. Borrower will not permit any Subsidiary to
         make any distributions other than to Borrower. Borrower will not, and
         will not permit its Subsidiaries to, make any deposit for any purpose
         that violates the provisions of this Section 8.5.

                                       50


8.6      Capital Expenditures.

         (a)      Borrower will not, and will not permit any of its Subsidiaries
                  to, make or commit to make Capital Expenditures in any
                  calendar year, except Capital Expenditures set forth in the
                  current "Capital Expenditures" section of the Development
                  Plan.

         (b)      Except as may otherwise be approved by Lender, in its sole and
                  absolute discretion, Borrower shall not, and will not permit
                  any of its Subsidiaries to, make (i) any expenditures which
                  are not set forth in the Development Plan or (ii) any payment
                  for any expenditure in excess of the amount set forth in the
                  Development Plan for such expenditure; provided, however,
                  that, notwithstanding the foregoing, Borrower may make
                  aggregate annual expenditures of up to $400,000 which are not
                  in conformity with the Development Plan, and such payments
                  shall be deemed approved amounts for the purposes of Section
                  3.4(b).

8.7      Accounts Receivable. Borrower shall not, and will not permit any of its
         Subsidiaries to, sell or discount any of its accounts receivable
         without the prior written consent of Lender.

8.8      Rental Obligations. Without the prior written consent of Lender,
         Borrower will not, and will not permit any of its Subsidiaries to,
         enter into at any time any arrangement which creates a Capitalized
         Lease Liability and which involves the leasing by Borrower from any
         lessor of any Property (or any interest therein), except arrangements
         which exist as of the Effective Date (or any renewals or replacements
         thereof) or are approved under the Development Plan or together with
         all other such arrangements which will then be in effect, will not
         require the payment of an aggregate amount of rentals by Borrower and
         its Subsidiaries (in aggregate) in excess of (excluding escalations
         resulting from a rise in the consumer price or similar index) $75,000
         for any calendar year or $150,000 during the full remaining term of
         such arrangements.

8.9      Take-or-Pay Contracts. Without the prior written consent of Lender, in
         its sole and absolute discretion, Borrower will not, and will not
         permit any of its Subsidiaries to, enter into or be a party to any
         arrangement for the purchase of materials, supplies, other Property
         (including Hydrocarbons) or services if such arrangement requires that
         payment be made by Borrower or such Subsidiaries regardless of whether
         such materials, supplies, other property or services are delivered or
         furnished to it.

8.10     Consolidation, Merger, etc. Except for the Abraxas Amalgamation,
         Borrower will not, and will not permit any of its Subsidiaries to,
         liquidate or dissolve, consolidate with, or merge into or with, any
         other Person, or purchase or otherwise acquire all or substantially all
         of the assets of any Person (or of any division thereof), without the
         prior written consent of Lender.

8.11     Asset Dispositions, etc. Except as permitted by Section 4.3, without
         the prior written consent of Lender, in its sole and absolute
         discretion after reasonable consultation with Borrower, Borrower will
         not, and will not permit any of its Subsidiaries to, sell, transfer,
         lease, contribute or otherwise convey, or grant options, warrants or
         other rights with respect to, all or any substantial part of its
         Property or the Subject Interests to any Person. Borrower will at all


                                       51


         times be the legal and beneficial owner of the Subject Interests.
         Borrower will not, and will not permit any of its Subsidiaries to,
         change its name, identity, principal place of business or the office
         where it keeps its books and records concerning the Override, the
         Production Sale Contracts and the contract rights and accounts now
         existing or hereafter arising in connection therewith without notifying
         Lender in writing of any such change at least 30 days prior to the
         effective date of such change.

8.12     Abandonment of Wellbores or Conduct of Certain Operations. Without
         first obtaining the written consent of Lender, Borrower will not, and
         will not permit any of its Subsidiaries to, (i) abandon any wellbore on
         the Subject Interests which is capable of producing in paying
         quantities heretofore or hereafter completed for production of
         Hydrocarbons; or (ii) conduct any work or operation in any wellbore of
         a Subject Interest, which work or operation is related to any zone,
         horizon, formation or interval not included in the Subject Interests.
         For all purposes of this Agreement and the Override Royalty Agreement,
         a well shall be deemed to be capable of producing Hydrocarbons "in
         paying quantities" unless and until there arises a condition, which
         reasonably appears to be permanent, such that the aggregate value of
         the Subject Hydrocarbons which are being produced or will be produced
         from such well (without considering the effect of the Override) no
         longer exceeds or will not exceed the costs and expenses directly
         related to the operation and maintenance of such well.

8.13     Grant Liens, Mortgage or Transfer or Resignation as Operator of any
         Subject Interest. Except as permitted by Section 4.4, without first
         obtaining the written consent of Lender which shall not unreasonably be
         withheld, Borrower will not, and will not permit any of its
         Subsidiaries to, (i) sell, assign, lease, mortgage, hypothecate,
         pledge, or otherwise transfer the interest of Borrower and its
         Subsidiaries in any of the Subject Interests, either in whole or in
         part, except for Permitted Liens and, to the extent permitted by
         Applicable Law, any purported sale, assignment, lease, mortgage or
         hypothecation or other transfer in contravention hereof shall be null
         and void; or (ii) resign as operator of any of the Subject Interests
         operated by Borrower or such Subsidiary unless the successor operator
         has been approved in writing by Lender or, following the occurrence of
         a Default or an Event of Default, Lender shall have requested in
         writing such resignation.

8.14     Modification of Certain Agreements. Borrower will not, and will not
         permit any of its Subsidiaries to, permit, or otherwise consent to, any
         amendment, supplement or other modification of any of the terms or
         provisions contained in, or applicable to, any Transportation
         Agreements, any Joint Operating Agreement or any gathering or marketing
         agreement with Lender, without the prior written consent of Lender
         which shall not unreasonably be withheld.

8.15     Pension Plans. Without the prior written consent of Lender which shall
         not unreasonably be withheld, Borrower will not create or permit to
         exist any pension or similar plan, other than those attached hereto as
         Schedule V, and any renewal of equivalent replacement thereof.

                                       52


8.16     Other Agreements. Borrower will not, and will not permit any of its
         Subsidiaries to, enter into any agreement containing any provision
         which would be violated or breached by the performance of their
         obligations under the Loan Documents or under any instrument or
         document delivered or to be delivered by Borrower or any of its
         Subsidiaries thereunder or in connection therewith.

8.17     No Subsidiaries. Without the prior written consent of Lender, in its
         sole and absolute discretion, Borrower will not, and will not permit
         any of its Subsidiaries to, at any time create or acquire any new
         Subsidiary or enter into any partnership, joint venture or other
         business, other than in the ordinary course of business.

8.18     No Other Hedging Agreements. Except for the ISDA Master Agreement and
         any Borrower Hedging Agreement, entered into in connection with such
         ISDA Master Agreement, Borrower will not, and will not permit any of
         its Subsidiaries to, enter into any other ISDA master agreement or any
         Hedging Agreement except pursuant to the ISDA Master Agreement.

8.19     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 Affiliates, unless
         Borrower or such Subsidiary has obtained the prior written consent of
         Lender in its sole discretion to such transaction.

8.20     Negative Pledges, Restrictive Agreements, etc. Borrower will not, and
         will not permit any of its Subsidiaries to, enter into any agreement
         prohibiting:

         (a)      the creation or assumption of any Lien in favor of Lender upon
                  its Properties, revenues or assets, whether now owned or
                  hereafter acquired, or the ability of Borrower to amend or
                  otherwise modify this Agreement or any other Loan Document; or

         (b)      the ability of any 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 Subsidiary to make any
                  payment, directly or indirectly, to Borrower.

8.21     Limitations on Certain Financing Leases and Sale and Leaseback
         Transactions. Borrower will not, and will not permit any Subsidiary to,
         enter into any synthetic lease or leveraged lease arrangement with any
         Person or enter into any arrangement with any Person providing for the
         leasing by Borrower or any Subsidiary of any Property, which Property
         is or has been sold or transferred by Borrower or any Subsidiary to
         such Person in contemplation of taking back a lease thereof, other than
         those described in Schedule VII.

8.22     Dissemination of Information. Borrower will not, and will not permit
         any Subsidiary to, cause or otherwise permit (i) any information in any
         way relating to the transaction contemplated by the Loan Documents to


                                       53


         be disseminated, quoted from or referred to at any time, in any manner
         or for any purpose, or (ii) any public reference to Lender to be made
         by Borrower in any press release or similarly public transmission,
         without the prior written consent in each specific instance of Lender,
         in its sole and absolute discretion, except to the extent required to
         be disclosed by Applicable Law or by any order, rule, regulation or
         legal process (whether valid or invalid) of any court or Governmental
         Agency.

8.23     Subject Interests. Borrower will not, and will not permit any of its
         Subsidiaries to, enter into any new agreements or assign or modify the
         terms of any existing agreements, relating to or affecting the Subject
         Properties' mineral interests, including additional override burdens or
         interests.

                                   Article 9
                                EVENTS OF DEFAULT

9.1      Events of Default. Each of the following events or occurrences
         described in this Section 9.1 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, or
                  interest on, any Loan; or Borrower shall default (and such
                  default shall continue unremedied for a period of five (5)
                  days) in the payment when due of any other Obligation.

         (b)      Breach of Warranty. Any representation or warranty of Borrower
                  or any other Obligor made or deemed to be made hereunder or in
                  any other Loan Document executed by it or any other writing or
                  certificate furnished by or on behalf of Borrower or any other
                  Obligor to Lender for the purposes of or in connection with
                  this Agreement or any other Loan Document (including any
                  certificates delivered pursuant to Article 5) is or shall be
                  incorrect when made in any material respect.

         (c)      Non-Performance of Certain Covenants and Obligations. A
                  default in the due performance by Borrower or any other
                  Obligor of any covenant or express agreement contained in this
                  Agreement or any other Loan Document, and continuation of such
                  default beyond the applicable grace period expressly granted
                  in this Agreement or any such other Loan Document, if any,
                  with respect thereto.

         (d)      Collateral Coverage Default. Subject to Section 9.2(a)(iv),
                  any occurrence of a Collateral Coverage Default.

         (e)      Default on Other Indebtedness.

                  (i)   A default shall occur in the payment when due (subject
                        to any applicable grace period), whether by acceleration
                        or otherwise, of any Indebtedness (including any Hedging
                        Obligations under a Hedging Agreement in effect between
                        Borrower and Lender or an Affiliate of Lender) of
                        Borrower or a default shall occur in the performance or


                                       54


                        observance of any obligation or condition with respect
                        to such Indebtedness if the effect of such default is to
                        accelerate the maturity of any such Indebtedness or such
                        default shall continue unremedied for any applicable
                        period of time sufficient to permit the holder or
                        holders of such Indebtedness, or any trustee or agent
                        for such holders, to cause such Indebtedness to become
                        due and payable prior to its expressed maturity.

                  (ii)  A failure to pay when due (or within 30 days after
                        written demand) any royalty, overriding royalty or
                        similar interest burdening the Subject Interests unless
                        (A) such royalty, overriding royalty or similar interest
                        is being disputed in good faith by Borrower, and (B)
                        Borrower establishes a suspense account acceptable to
                        Lender and any disbursement from such suspense account
                        other than to a non-affiliated interest owner who
                        Borrower has determined is the rightful owner of the
                        suspended funds subject to the prior written approval of
                        Lender.

         (f)      Judgments. Any judgment or order for the payment of money in
                  excess of $50,000 shall be rendered against Borrower and
                  either (i) enforcement proceedings shall have been commenced
                  by any creditor upon such judgment or order, or (ii) there
                  shall be any period of ten (10) consecutive days during which
                  a stay of enforcement of such judgment or order, by reason of
                  a pending appeal or otherwise, shall not be in effect.

         (g)      Control of Borrower. Any Change of Control shall occur.

         (h)      Bankruptcy, Insolvency. If a judgment, decree or order of a
                  court of competent jurisdiction is entered against Borrower or
                  any Obligor, (i) adjudging Borrower or any such Obligor
                  bankrupt or insolvent, or approving a petition seeking its
                  reorganization or winding-up under the Bankruptcy and
                  Insolvency Act (Canada), the Companies' Creditors Arrangement
                  Act (Canada) or any other bankruptcy, insolvency or analogous
                  Applicable Law, or (ii) appointing a receiver, trustee,
                  liquidator, or other Person with like powers, over all, or
                  substantially all, of the Property of Borrower or any such
                  Obligor or any of the Subject Interests; (iii) ordering the
                  involuntary winding up or liquidation of the affairs of
                  Borrower or any such Obligor or (iv) if any receiver or other
                  Person with like powers is appointed over all, or
                  substantially all, of the Property of Borrower or any such
                  Obligor, or any of the Subject Interests; unless, in any such
                  case, such judgment, petition, order or appointment is stayed
                  and of no effect against the rights of Lender under the Loan
                  Documents within 30 days of its entry and Lender is satisfied
                  that there is no adverse effect in its position as a result of
                  Lender permitting Borrower time to pursue such stay.

         (i)      Winding-Up. If, (i) an order or a resolution is passed for the
                  dissolution, winding-up, reorganization or liquidation of
                  Borrower or any other Obligor pursuant to Applicable Law,
                  including the Business Corporations Act (Alberta), or (ii)
                  Borrower or any such Obligor institutes proceedings to be
                  adjudicated bankrupt or insolvent, or consents to the
                  institution of bankruptcy or insolvency proceedings against it


                                       55


                  under the Bankruptcy and Insolvency Act (Canada), the
                  Companies' Creditors Arrangement Act (Canada) or any other
                  bankruptcy, insolvency or analogous Applicable Law, or (iii)
                  Borrower or any such Obligor consents or acquiesces to the
                  filing of any petition under any such Applicable Law or to the
                  appointment of a receiver, or other Person with like powers,
                  over all, or substantially all, of Borrower's or any such
                  Obligor's Property or the Subject Interests, or (iv) Borrower
                  or any such Obligor makes a general assignment for the benefit
                  of creditors, or becomes unable to pay its debts generally as
                  they become due, or (v) Borrower or any such Obligor takes or
                  consents to any action in furtherance of any of the aforesaid
                  purposes.

         (j)      Impairment of Security, etc. Any Loan Document, or any Lien
                  granted thereunder, shall (except in accordance with its
                  terms), in whole or in part, terminate, cease to be effective
                  or cease to be the legally valid, binding and enforceable
                  obligation of Borrower; Borrower or any other Person shall,
                  directly or indirectly, contest in any manner such
                  effectiveness, validity, binding nature or enforceability; or
                  any Lien securing any Obligation shall, in whole or in part,
                  cease to be a perfected first Lien.

         (k)      Cumulative Reimbursable Expenses Amount. The aggregate total
                  of all Reimbursable Expenses paid by Lender and which Lender
                  has not received a reimbursement from Borrower pursuant to
                  Section 9.2(a)(iii) shall exceed $50,000.

         (l)      Material Adverse Change. A material adverse change, as
                  determined by Lender in its sole and absolute discretion, in
                  the business, financial condition or results of operations in
                  Borrower's ability to perform or their respective obligations
                  under any Loan Documents to which it is a party.

         (m)      Dissemination of Information. The breach by Borrower of the
                  requirements of Section 8.22.

9.2      Remedies of Lender.

(a)      If an Event of Default:

         (i)      described in Sections 9.1(a), (b), (c), (e), (f), or (k)
                  (other than in respect of a payment) shall have occurred,
                  Lender may provide Borrower with written notice specifying in
                  reasonable detail the Event of Default which has occurred and
                  stating that it intends to exercise remedies provided in this
                  Section 9.2. Borrower shall then have 30 days after receipt of
                  such notice to cure or cause to be cured such default and to
                  provide Lender with notice and reasonable documentation that
                  it has cured or cause to be cured such Event of Default. If
                  Borrower does not provide such proper notice and evidence,
                  then Lender may immediately by notice to Borrower reduce the
                  Commitment Amount to zero and/or declare all or any portion of
                  the outstanding principal amount under this Agreement and
                  other Obligations to be due and payable whereupon the full


                                       56


                  unpaid amount under this Agreement and other Obligations which
                  shall be so declared due and payable shall be and become
                  immediately due and payable, without further notice, demand or
                  presentment, and Lender may exercise, in addition to other
                  remedies available at law or in equity or pursuant to the
                  other Loan Documents, the remedies set forth in Section
                  9.2(b);

         (ii)     in Sections 9.1(h) and 9.1(i) shall have occurred, then the
                  outstanding principal amount under this Agreement and all
                  other Obligations shall automatically be and become
                  immediately due and payable, without notice or demand and
                  Lender may exercise, in addition to other remedies available
                  at law or in equity or pursuant to the other Loan Documents,
                  the remedies set forth in Section 9.2(b); provided, however,
                  that Lender may not exercise such remedies if Borrower or any
                  other Obligor, as the case may be, shall have cured each such
                  Event of Default to the reasonable satisfaction of Lender
                  prior to the time when Lender elects to exercise such
                  remedies;

         (iii)    described in Section 9.1(k) shall have occurred, and if Lender
                  shall have paid or incurred a Reimbursable Expense in
                  connection therewith, Lender shall notify Borrower in writing
                  of such payment(s), and if Borrower does not fully reimburse
                  Lender within ten (10) days of receipt of such notice, Lender
                  shall be entitled by notice to Borrower to declare all or any
                  portion of the outstanding principal amount under this
                  Agreement and other Obligations to be due and payable
                  whereupon the full unpaid amount under this Agreement and
                  other Obligations which shall be so declared due and payable
                  shall be and become immediately due and payable, without
                  further notice, demand or presentment, and Borrower may
                  exercise, in addition to other remedies available at law or in
                  equity or pursuant to the other Loan Documents, its remedies
                  under Section 9.2(b).

         (iv)     If an Event of Default described in Section 9.1(d) shall have
                  occurred, Lender may provide Borrower with written notice
                  specifying in reasonable detail the Event of Default which has
                  occurred and stating that it intends to exercise remedies
                  provided in this Section 9.2. Borrower shall then have 60 days
                  after receipt of such notice to (A) cure or cause to be cured
                  such default by either (x) making a prepayment in conformity
                  with Section 3.1 in an amount sufficient to eliminate the
                  Collateral Coverage Default, or (y) pledge to Lender
                  additional properties which are acceptable to Lender, in its
                  sole discretion, in an manner and in an amount sufficient to
                  eliminate the Collateral Coverage Default, and (B) provide
                  Lender with notice and reasonable documentation that it has
                  cured or cause to be cured such Event of Default. If Borrower
                  does not provide such proper notice and evidence, then Lender
                  may immediately by notice to Borrower declare all or any
                  portion of the outstanding principal amount under this
                  Agreement and other Obligations to be due and payable
                  whereupon the full unpaid amount under this Agreement and
                  other Obligations which shall be so declared due and payable


                                       57


                  shall be and become immediately due and payable, without
                  further notice, demand or presentment, and Lender may
                  exercise, in addition to other remedies available at law or in
                  equity or pursuant to the other Loan Documents, the remedies
                  set forth in Section 9.2(b).

         (v)      If an Event of Default shall have occurred, then Lender may by
                  notice to Borrower declare all or any portion of the
                  outstanding principal amount under this Agreement and other
                  Obligations to be due and payable whereupon the full unpaid
                  amount of the Loans and other Obligations which shall be so
                  declared due and payable shall be and become immediately due
                  and payable, without further notice, demand or presentment,
                  and Borrower may exercise, in addition to other remedies
                  available at law or in equity or pursuant to the other Loan
                  Documents, its remedies Section 9.2(b).

(b)      After the occurrence of an Event of Default, and in addition to
         Lender's right to recover damages, all remedies set forth in Section
         9.2(a) and all other remedies available to Lender provided by
         Applicable Law or in equity or pursuant to the Loan Documents,
         including the Debenture and the Debenture Pledge Agreement, Lender may
         (but is not obligated or required to) exercise any or all of the
         following remedies:

         (i)      perform or cause to be performed or pay at Borrower's expense
                  the act or matter the failure of which resulted in the Event
                  of Default, in which event Lender may expend funds for such
                  purpose;

         (ii)     take any and all actions necessary to protect the Property
                  secured by the Debenture and the other security documents
                  referred to in Section 5.4, including taking any legal actions
                  or paying any amounts or settling any claims;

         (iii)    apply any amounts deposited in the Collateral Account as a
                  prepayment on the Loans outstanding under this Agreement
                  pursuant to Section 3.1;

         (iv)     after written notice to Borrower, exercise all rights of
                  Borrower with respect to the possession, operation and
                  development of some or all of the Subject Interests, including
                  the right to operate some or all of the Subject Interests;

         (v)      exercise the right to notify the purchasers of the Subject
                  Hydrocarbons to make direct payment to Lender;

         (vi)     have the use, in connection with operating the Subject
                  Interests, of any or all of the Property of Borrower located
                  thereon or used in connection therewith as then may be useful
                  or appropriate for the production, treating, storing, and
                  transporting of Subject Hydrocarbons and Borrower hereby grant


                                       58


                  Lender a non-exclusive easement and license to use any and all
                  such Property in the event of such occurrence;

         (vii)    Lender may on behalf of and for the account of Borrower, sell
                  or utilize all of the Subject Hydrocarbons and apply the
                  proceeds thereof attributable to interest of Borrower therein
                  to the costs and expenses of the operation and development of
                  the Subject Interests and to reimburse Lender for any amounts
                  so expended by Lender;

         (viii)   in the event of the occurrence of an Event of Default, Lender
                  may request and require Borrower to resign as record title
                  operator of the Subject Interests and take all actions
                  necessary to replace Borrower as record title operator,
                  including replacing Borrower as record title operator with
                  Lender or any of its Affiliates or any third-party, and
                  Borrower agrees (A) to cooperate fully in each and every way
                  in connection with the replacement of the operator of the
                  Subject Interests, including agreeing to withdraw as record
                  title operator of the Subject Interests, (B) to vote for and
                  otherwise support Lender's designated interim record title
                  operator until a successor record title operator is elected
                  pursuant to the terms and provisions of any joint operating
                  agreement, and (C) to vote for and otherwise support Lender's
                  choice as record title operator pursuant to the terms and
                  provisions of any joint operating agreement; provided that
                  Borrower -------- ---- shall remain obligated for all
                  obligations, costs and expenses arising from serving as record
                  title operator of the Subject Interests.

(c)      Upon demand, after the occurrence of an Event of Default, Borrower
         shall reimburse Lender for all reasonable amounts expended (including
         the fees and out-of-pocket expenses of counsel (on a solicitor and his
         own client basis) in connection therewith, the costs incurred by Lender
         in connection with the rescheduling of committed Hydrocarbon
         deliveries, the termination of any existing contracts or agreements and
         any pipeline service costs) by Lender (such expended amounts to be
         included as Reimbursable Expenses) as a result of or in connection with
         its exercise of remedies, together with interest on such amounts at the
         Default Rate from the date incurred until reimbursed.

(d)      Upon demand, after the occurrence of an Event of Default, Borrower
         shall submit an updated Development Plan.

(e)      The rights provided for in this Agreement and the other Loan Documents
         are cumulative and are not exclusive of any other rights, powers,
         privileges or remedies provided by Applicable Law or in equity, or
         under any other instrument, document or agreement, including the Loan
         Documents, now existing or hereafter arising.

                                       59


                                   Article 10
                           OVERRIDE ROYALTY AGREEMENT

10.1     Override Royalty Agreement.


         (a)      Upon Lender receiving a 17.5% Cumulative Return on Total
                  Funding under this Agreement, Lender shall reconvey, or shall
                  cause to be reconveyed, the Override described in the Override
                  Royalty Agreement No. 2 to Borrower and Lender shall take all
                  steps reasonably necessary to effect such registrations, if
                  any, as are necessary to effect such conveyances.

         (b)      Upon Lender receiving the Payout Amount pursuant to Section
                  3.2, Lender shall reconvey, or shall cause to be reconveyed,
                  the Override described in the Override Royalty Agreement No. 1
                  to Borrower and Lender shall take all steps reasonably
                  necessary to effect such registrations, if any, as are
                  necessary to effect such conveyances.

                                   Article 11
                    HYDROCARBON PURCHASE TERMS AND PROVISIONS

11.1     General. Lender, or any Affiliate of Lender, shall have the
         preferential right, but not the obligation, to purchase any Subject
         Hydrocarbons after any gathering, treating and processing utilized to
         prepare the Subject Hydrocarbons to be marketed meeting standard
         pipeline specifications, in accordance with the terms and conditions of
         this Article 11 from the Effective Date until the date on which the
         unconditional and irrevocable payment in full in cash of all accrued
         and outstanding monetary Loan Obligations is received by Lender and the
         termination or expiration of the Commitment. Such preferential right
         may be exercised from time to time during the period described in the
         preceding sentence upon thirty (30) days' written notice to Borrower.
         Lender shall purchase such Subject Hydrocarbons for a purchase price
         equal to their fair market value to be determined pursuant to a method
         acceptable to both Borrower and Lender. Lender or such Affiliate, as
         applicable, may, in its sole discretion, cease purchasing Subject
         Hydrocarbons from any or all wells or delivery points upon thirty (30)
         days' written notice to Borrower. In either case, Lender's election
         shall be effective on the first day of the first calendar month that
         begins after the expiration of the applicable thirty (30) day notice
         period. Without the prior written consent of Lender (which consent may
         be withheld in its sole and absolute discretion), Borrower will not,
         and will cause each of its Subsidiaries not to, enter into, or cause,
         suffer or permit to exist any arrangement or contract for the marketing
         of Subject Hydrocarbons with any Person other than Lender or an
         Affiliate of Lender; provided, however, that in the event Lender or
         such Affiliate elects not to purchase Subject Hydrocarbons in
         accordance with this Section 11.1, Borrower or any of its Subsidiaries
         may sell or contract to sell such Subject Hydrocarbons to any Person
         for a period not exceeding one (1) calendar month without the prior
         written consent of Lender (which consent may be withheld in Lender's
         sole discretion). In such case, Lender shall not be entitled to
         exercise the preferential rights until the expiry of such approved
         term. Any Subject Hydrocarbons consisting of natural gas, casinghead
         gas and other gaseous Hydrocarbons sold by Borrower and purchased by


                                       60


         Lender, or an Affiliate of Lender, as the case may be, shall be sold
         and purchased under the terms and conditions mutually acceptable to
         Lender and Borrower (and in any event, no less than the fair market
         value). Any Subject Hydrocarbons consisting of crude oil, condensate
         and other liquid Hydrocarbons sold by Borrower and purchased by Lender
         shall be sold and purchased under terms and conditions mutually
         acceptable to Lender and Borrower. At any time that Lender purchases
         any Subject Hydrocarbons, such purchase shall not be construed as
         Lender marketing Subject Hydrocarbons or causing such Subject
         Hydrocarbons to be marketed, and Borrower shall have no further
         interest or responsibility whatsoever with respect to such Subject
         Hydrocarbons purchased by Lender.

11.2     Marketing Subject Hydrocarbons to Third Persons. It is contemplated
         that Borrower may market, directly or indirectly, Subject Hydrocarbons
         to third Persons, as provided in Section 11.1. In such instances,
         Lender and Borrower shall execute letters in lieu (the "Letters in
         Lieu") before marketing Subject Hydrocarbons to such Persons. The
         Letters in Lieu shall be (i) addressed to the Person(s) purchasing the
         Subject Hydrocarbons, (ii) executed and delivered by both Borrower and
         Lender (or its Affiliate), (iii) shall require payment of the proceeds
         from the sale of the Hydrocarbons to the Collateral Account and
         otherwise in accordance with Section 3.4(a), and shall otherwise be in
         form and substance satisfactory to Lender, in its sole discretion and
         (iv) can be revoked or terminated only by a written instrument
         addressed to the Person(s) purchasing the Subject Hydrocarbons, and
         signed by both Borrower and Lender.

                                   Article 12
                            MISCELLANEOUS PROVISIONS

12.1     Waivers, Amendments, etc. The provisions of this Agreement and of each
         other Loan Document may from time to time be amended, modified or
         waived, if such amendment, modification or waiver is in writing and
         consented to by Borrower and Lender and in the case of Loan Documents
         to which a Subsidiary of Borrower is a party, such Subsidiary. No
         failure or delay on the part of Lender in exercising any power or right
         under this Agreement or any other Loan Document shall operate as a
         waiver thereof, nor shall any single or partial exercise of any such
         power or right preclude any other or further exercise thereof or the
         exercise of any other power or right. No notice to or demand on
         Borrower in any case shall entitle it to any notice or demand in
         similar or other circumstances. No waiver or approval by Lender under
         this Agreement or any other Loan Document shall, except as may be
         otherwise stated in such waiver or approval, be applicable to
         subsequent transactions. No waiver or approval hereunder shall require
         any similar or dissimilar waiver or approval thereafter to be granted
         hereunder.

12.2     Notices. All notices and other communications provided to any party
         hereto under this Agreement or any other Loan Document shall be in
         writing or by facsimile and addressed, delivered or transmitted to such
         party at its address or facsimile number set forth below its signature
         hereto or at such other address or facsimile number as may be
         designated by such party in a notice to the other parties. Any notice,
         if mailed and properly addressed with postage prepaid or if properly
         addressed and sent by pre-paid courier service, shall be deemed given


                                       61


         when received; any notice, if transmitted by facsimile, shall be deemed
         given when transmitted.

12.3     Payment of Costs and Expenses. Borrower agrees to pay on demand all
         expenses of Lender (including the reasonable fees (on a solicitor and
         his own client basis) and out-of-pocket expenses of counsel to Lender
         and of local counsel, if any, who may be retained by counsel to Lender)
         in connection with (i) the negotiation, preparation, execution and
         delivery of this Agreement and of each other Loan Document, including
         schedules and exhibits, and any amendments, waivers, consents,
         supplements or other modifications to this Agreement or any other Loan
         Document as may from time to time hereafter be required, whether or not
         the transactions contemplated hereby are consummated; and (ii) the
         filing, recording, refiling or re-recording of the Debenture and/or any
         personal property security legislation financing statements relating
         thereto and all amendments, supplements and modifications to any
         thereof and any and all other documents or instruments of further
         assurance required to be filed or recorded or refiled or re-recorded by
         the terms hereof or of the Debenture or the Debenture Pledge Agreement;
         and (iii) the preparation and review of the form of any document or
         instrument relevant to this Agreement or any other Loan Document.
         Borrower further agrees to pay, and to save Lender harmless from all
         liability for, any stamp or other Taxes which may be payable in
         connection with the execution or delivery of this Agreement, or any
         other Loan Documents or the borrowings hereunder. Borrower also agrees
         to reimburse Lender upon demand for all reasonable out-of-pocket
         expenses (including counsel fees (on a solicitor and his own client
         basis) and legal expenses) incurred by Lender in connection with (A)
         the negotiation of any restructuring or "work-out", whether or not
         consummated, of any Obligations and (B) the enforcement of any
         Obligations.

12.4     Indemnification. In consideration of the execution and delivery of this
         Agreement by Lender and the extension of the Commitment, Borrower
         hereby indemnifies, exonerates and holds Lender and each of its
         officers, directors, employees and agents (collectively, the
         "Indemnified Parties") free and harmless from and against any and all
         actions, causes of action, suits, claims, losses, costs, liabilities
         and damages, and expenses incurred in connection therewith
         (irrespective of whether any such Indemnified Party is a party to the
         action for which indemnification hereunder is sought), including
         reasonable legal fees (on a solicitor and his own client basis) and
         disbursements (collectively, the "Indemnified Liabilities"), incurred
         by the Indemnified Parties or any of them as a result of, or arising
         out of, or relating to (i) any transaction financed or to be financed
         in whole or in part, directly or indirectly, with the proceeds of any
         Loan; (ii) the entering into and performance of this Agreement and any
         other Loan Document by any of the Indemnified Parties (including any
         action brought by or on behalf of Borrower or any of its Subsidiaries
         as the result of any determination by Lender pursuant to Article 5 not
         to fund any Loan) other than costs, expenses and taxes incurred or
         accruing to Lender in the ordinary course of performing its
         responsibilities and recovering income which have not otherwise been
         specified as being the responsibility of Borrower; (iii) any
         investigation, litigation or proceeding related to any environmental
         cleanup, remediation, audit, compliance assessments, fines or other
         matter relating to the protection of the Environment or the Release of
         any Hazardous Material in connection with, or related to, the Subject


                                       62


         Interests; (iv) the presence on or under, or the Release from, any of
         the Subject Interests of any Hazardous Material (including any losses,
         liabilities, damages, injuries, costs, expenses or claims asserted or
         arising under any Environmental Law), regardless of whether caused by,
         or within the control of, Borrower or its Subsidiaries, if any, (v) any
         material breach of any representation or warranty by Borrower or any of
         its Subsidiaries, if any, contained in this Agreement or any other Loan
         Document to which such Person is a party; (vi) the receipt by an
         Affiliate of Borrower of any Subject Hydrocarbons or the ownership or
         purported ownership of the Subject Interests; (vii) any Event of
         Default; (viii) any costs, expenses or liabilities incurred by Lender
         arising from Lender providing any services under Section 7.4; (ix) any
         costs, expenses or liabilities incurred by Lender arising from, in
         respect of or in connection with Borrower's obligations to any owner of
         royalty interests on the Subject Interests; (x) any obligation,
         liability, contingent or otherwise, costs or expenses for brokers' or
         finders' fees relating to Borrower or any of its Subsidiaries in
         respect of the matters provided for in any of the Loan Documents, or
         (xi) the failure of Borrower to perform any of its material agreements
         or obligations set forth in this Agreement or in the other Loan
         Documents, and whether through an act or omission of an Indemnified
         Party or otherwise, and whether or not arising out of the sole, joint
         or concurrent negligence, fault or strict liability of any Indemnified
         Party, except for any such Indemnified Liabilities arising for the
         account of a particular Indemnified Party by reason of the relevant
         Indemnified Party's gross negligence or willful misconduct, provided,
         that, it is the intention of the Parties that the indemnified parties
         be indemnified in the case of their own ordinary negligence but
         excluding gross negligence and willful misconduct, provided further
         that the indemnities set forth in subsections (i), (ii), (v), (vi),
         (vii), (viii), (ix), (x) and (xi) to the extent not related to any
         losses, liabilities, damages, injuries, costs, expenses or claims
         asserted or arising in connection with any Environmental Law shall only
         be in effect from the Effective Date until the date which is one (1)
         year following the date on which the unconditional and irrevocable
         payment in full in cash of all accrued and outstanding monetary Loan
         Obligations is received by Lender and the termination or expiration of
         the Commitment. This indemnity shall apply, without limitation, to any
         Indemnified Liability imposed upon any Indemnified Party as a result of
         any Applicable Law. The Indemnified Parties, and their respective
         successors and assigns, shall have the right to defend against any such
         claims, employing counsel therefor and, unless furnished with
         reasonable indemnity, they or any of them shall have the right to pay
         or compromise and adjust all such claims. If and to the extent that the
         foregoing undertaking may be unenforceable for any reason, Borrower
         hereby agrees to make the maximum contribution to the payment and
         satisfaction of each of the Indemnified Liabilities which is
         permissible under Applicable Law.

12.5     Survival. The obligations of Borrower under Sections 12.3 and 12.4
         shall in each case survive any termination of this Agreement, the
         payment in cash of all accrued and outstanding monetary Loan
         Obligations and the termination or expiration of the Commitment. The
         representations and warranties made by Borrower in this Agreement and
         in each other Loan Document shall survive the execution and delivery of
         this Agreement and each such other Loan Document.

                                       63


12.6     Inconsistency. To the extent that there is any inconsistency or
         ambiguity between the provisions of this Agreement and any other Loan
         Document, the provisions of this Agreement will govern to the extent
         necessary to eliminate such inconsistency or ambiguity.

12.7     Reimbursable Expenses. While not required, if Lender performs any of
         the covenants of Borrower, pays any amounts in respect thereof or
         suffers any loss, cost or expense as a result of the failure of
         Borrower to timely perform any covenant or make any such payment, any
         such cost or expense incurred by Lender in respect thereof shall
         constitute a Reimbursable Expense and will be considered a subsequent
         principal advance under this Agreement, subject to the Interest Rate.

12.8     Severability. Any provision of this Agreement or any other Loan
         Document which is prohibited or unenforceable in any jurisdiction
         shall, as to such provision and such jurisdiction, be ineffective to
         the extent of such prohibition or unenforceability without invalidating
         the remaining provisions of this Agreement or such Loan Document or
         affecting the validity or enforceability of such provision in any other
         jurisdiction.

12.9     Headings. The various headings of this Agreement and of each other Loan
         Document are inserted for convenience only and shall not affect the
         meaning or interpretation of this Agreement or such other Loan Document
         or any provisions hereof or thereof.

12.10    Limitation on Liability. Lender's recourse as to the payment if
         principal and interest under the agreement is limited to the assets of
         Borrower and any other Obligor to the extent its or their assets are
         pledged, changed or mortgaged in favour of Lender unless certain
         actions of Borrower or any such other Obligor, including fraud,
         material misrepresentation, gross negligence and like actions, hinder
         or interfere with Lender's rights in the Property of Borrower and such
         other Obligors as set forth in the Loan Documents.

12.11    Intentions of the Parties. Nothing herein contained shall be construed
         to constitute either Party (under Applicable Law or for tax purposes)
         in partnership with the other Party.

12.12    Governing Law; Entire Agreement. This Agreement and each other Loan
         Document shall each be deemed to be a contract made under and governed
         by the laws of the Province of Alberta.

12.13    Successors and Assigns. This Agreement shall be binding upon and shall
         inure to the benefit of the Parties and their respective successors and
         permitted assigns; provided, however, that Borrower may not assign or
         transfer its rights or obligations hereunder without the prior written
         consent of Lender. Lender shall have the right to syndicate, sell or
         assign any portion of its Commitment Amount to any one or more Persons.
         In the event of such syndication, sale or assignment, Borrower shall,
         subject to the preceding limitations, execute and deliver all such
         agreements, documents and instruments as Lender may reasonably request
         to effect and recognize such syndication, sale or assignment. Any


                                       64


         syndication, sale or assignment as provided above, shall not require
         the consent of Borrower.

12.14    Effect of Syndication. To the extent that Lender sells or assigns any
         portion of its Commitment Amount pursuant to Section 12.13 and such new
         Lender has, or new Lenders have, as the case may be, executed and
         delivered to Borrower and Lender an agreement evidencing the same,
         Lender will be relieved and forever discharged of any and all of its
         covenants and obligations under the Loan Documents in respect of that
         portion of its Commitment Amount so sold or assigned from and after the
         date of such agreement and Borrower's recourse under the Loan Documents
         in respect of such portion so sold or assigned from and after the date
         of such agreement will be to such new Lender or new Lenders only, as
         the case may be, and their successors and assigns.

12.15    Participations. Lender may at any time sell to one or more financial
         institutions or other Persons (each of such financial institutions and
         other Persons being herein called a "Participant") participating
         interests in any of the Loans, commitments, or other interests of
         Lender hereunder, provided, however, that:

         (a)      no participation contemplated in this Section 12.15 will
                  relieve Lender from its commitments or its other obligations
                  hereunder or under any other Document;

         (b)      Lender will remain solely responsible for the performance of
                  its Commitment and such other obligations;

         (c)      no Participant will be entitled to require Lender to take or
                  refrain from taking any action hereunder or under any other
                  Loan Document; and

         (d)      Borrower will not be required to pay any amount hereunder that
                  is greater than the amount which it would have been required
                  to pay had no participating interest been sold.

12.16    Maximum Rate of Return. Notwithstanding any provision herein to the
         contrary, in no event will the aggregate "interest" (as defined in
         section 347 of the Criminal Code (Canada)) payable under this Agreement
         and the other Loan Documents exceed the maximum effective annual rate
         of interest on the "credit advanced" (as defined in that section 347)
         permitted under that section 347 and, if any payment, collection or
         demand pursuant to this Agreement in respect of "interest" (as defined
         in that section 347) is determined to be contrary to the provisions of
         that section 347, such payment, collection or demand will be deemed to
         have been made by mutual mistake of Borrower and Lender and the amount
         of such payment or collection will be refunded to Borrower. For
         purposes of this Agreement and the other Loan Documents, the effective
         annual rate of interest will be determined in accordance with generally
         accepted actuarial practices and principles over the term of the
         Agreement on the basis of annual compounding of the lawfully permitted
         rate of interest and, in the event of dispute, a certificate of a
         Fellow of the Canadian Institute of Actuaries appointed by Lender will
         be prima facie evidence, for the purposes of such determination.

                                       65


12.17    Waiver of Judgment Interest Act (Alberta). To the extent permitted by
         Applicable Law, the provisions of the Judgment Interest Act (Alberta)
         will not apply to the Loan Documents and are hereby expressly waived by
         Borrower.

12.18    Deemed Reinvestment Not Applicable. The principle of deemed
         reinvestment of interest will not apply to any interest calculation
         under the Loan Documents, and the rates of interest stipulated in this
         Agreement and the other Loan Documents are intended to be nominal rates
         and not effective rates or yields.

12.19    Confidentiality. Lender agrees that it (i) will maintain the
         confidentiality of all non-public information received from Borrower
         obtained pursuant to the terms of this Agreement or any other Loan
         Document in accordance with safe and sound business practices, and (ii)
         will not use such confidential information for any purpose other than
         in connection with this Agreement; provided, however, that this
         restriction shall not apply to information which (A) has at the
         particular time in question entered the public domain, or has been
         independently developed without the use or incorporation of any
         non-public information provided to Lender by Borrower by Lender other
         than through disclosure by Lender in violation of this Section 12.19,
         (B) is required to be disclosed by Applicable Law or by any order,
         rule, regulation or legal process (whether valid or invalid) of any
         court or Governmental Agency, (C) is furnished to any purchaser or
         prospective purchaser of participations, assignments or other interests
         in any Loan or Commitment that has executed and delivered to Borrower
         an agreement containing terms substantially similar to this Section
         12.19 and reasonably acceptable to Borrower, to keep such information
         confidential, or (D) is disclosed to Lender's examiners, Affiliates,
         outside auditors, outside lenders to Lender, counsel and other
         professional advisors who have a need for such information in
         connection with this Agreement or in connection with their relationship
         with Lender and who are advised of the confidential nature of such
         information. As used in this Section, the term "Lender" shall refer not
         only to the Persons designated as such in Section 1.1, but also to each
         director, Affiliate, officer, agent, counsel, employee and
         representative of such Person. Notwithstanding any other provisions of
         this Agreement, the terms of this Section 12.19 shall survive the
         termination of this Agreement for a period of one (1) year.

12.20    Other Transactions. Nothing contained herein shall preclude Lender from
         engaging in any transaction, in addition to those contemplated by this
         Agreement or any other Loan Document, with Borrower or any of its
         Affiliates in which Borrower or such Affiliate is not restricted hereby
         from engaging with any other Person.

12.21    Forum Selection and Consent to Jurisdiction. Any litigation based
         hereon, or arising out of, under, or in connection with, this Agreement
         or any other Loan Document, or any course of conduct, course of
         dealing, statements (whether verbal or written) or actions of Lender or
         Borrower or any other Obligor shall be brought and maintained
         exclusively in the courts of the Province of Alberta; provided,
         however, that any suit seeking enforcement against the Subject
         Interests or other Property may be brought, at Lender's option, in the
         courts of any jurisdiction where such Subject Interests or other
         Property may be found. Borrower, hereby expressly and irrevocably
         submit to the jurisdiction of the courts of the Province of Alberta for


                                       66


         the purpose of any such litigation as set forth above and irrevocably
         agrees to be bound by any judgment rendered thereby in connection with
         such litigation. Borrower further irrevocably consents, to the service
         of process by registered mail, postage prepaid, or by personal service
         within or outside of the Province of Alberta. Borrower hereby expressly
         and irrevocably waives, to the fullest extent permitted by Applicable
         Law, any objection which they may have or hereafter may have to the
         laying of venue of any such litigation brought in any such court
         referred to above and any claim that any such litigation has been
         brought in an inconvenient forum. To the extent that Borrower has or
         hereafter may acquire any immunity from jurisdiction of any court of
         from any legal process (whether through service or notice, attachment
         prior to judgment, attachment in aid of execution or otherwise) with
         respect to itself or its Property, Borrower hereby irrevocably waives
         such immunity in respect of its Obligations under this Agreement and
         the other Loan Documents.

12.22    Waiver of Jury Trial. Borrower hereby knowingly, voluntarily and
         intentionally waives any rights they may have to a trial by jury in
         respect of any litigation based hereon, or arising out of, under, or in
         connection with, this Agreement or any other Loan Document, or any
         course of conduct, course of dealing, statements (whether verbal or
         written) or actions of Lender or Borrower or any other Obligor.
         Borrower acknowledges and agrees that they have received full and
         sufficient consideration for this provision (and each other provision
         of each other Loan Document to which it is a Party) and that this
         provision is a material inducement for Lender entering into this
         Agreement and each such other Loan Document.

12.23    No Oral Agreements. This 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
         between the Parties.

12.24    Execution in Counterparts, Effectiveness. This Agreement may be
         executed by the Parties in several counterparts (including by facsimile
         transmission), each of which shall be deemed to be an original and all
         of which shall constitute together but one and the same agreement. This
         Agreement shall become effective when counterparts hereof executed on
         behalf of Borrower and Lender (or notice thereof satisfactory to
         Lender) shall have been received by Lender and notice thereof shall
         have been given by Lender to Borrower.

                                       67


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

                                  GREY WOLF EXPLORATION INC.


                                  By:
                                  Name: Robert L. G. Watson
                                  Title: Chairman, President and Chief
                                  Executive Officer

                                  Address: 1600 Bow Valley Square III
                                           255 - 2nd Street S.W.
                                           Calgary, Alberta  T2P 3G6

                                  Attention:        Robert L. G. Watson
                                  Telephone No.:(403) 262-1949
                                  Telecopy No.:     (403) 262-1969

                                  MIRANT CANADA ENERGY CAPITAL, LTD.


                                  By:
                                  Name:    Rob Lindermanis
                                  Title:   Managing Director

                                  Address: Suite 300
                                           440 - 2nd Avenue SW
                                           Calgary, Alberta  T2P 5E9

                                  Attention: Rob Lindermanis, Managing Director
                                  Telephone No.:(403) 218-1075
                                  Telecopy No.:     (403) 218-1575

                                  with a copy to Mirant Americas Energy
                                  Capital, L.P. at:

                                  Address: Two Allen Center, Ste. 2890
                                           1200 Smith Street
                                           Houston, Texas  77002

                                  Attention: Dave Stewart, Managing Director
                                  Telephone No.(713) 276-1902
                                  Telecopy No.:     (713) 276-1990




                                   SCHEDULE I

                        Description of Subject Interests

                              [Borrower to provide]




                                  SCHEDULE II

                                 Use of Proceeds







Repayment of Canadian Imperial Bank of Commerce**       $_____________

General Corporate Purposes                              $_____________

TOTAL:                                                  $_____________



[**Indicates amounts funded with initial Loan]








                                  SCHEDULE III

                             Insurance Requirements

Lender (Mirant Canada Energy Capital, Ltd.) must be listed as "sole loss payee
as to first party claims" and "additional insured" on each of the policies
required below.

Requirements for: GREY WOLF EXPLORATION INC.





                                   SCHEDULE IV

                               Disclosure Schedule






                                       NIL





                                   SCHEDULE V

                                  Pension Plan

Grey Wolf Exploration Inc. has established a group Registered Retirement Savings
Plan where the employee is invited to participate in the program by contributing
from 1 - 5% of their annual gross salary to a RRSP portfolio of their choice.
Deductions are taken each pay period and contributed to Merrill Lynch Canada,
the group plan administrator, on a monthly basis.

The Company will match the employees' contribution on a monthly basis. Company
contributions credited to the employee shall vest immediately.

Upon reaching the yearly maximum contribution limit as set by legislation, both
the employee's and the company's contributions will be deposited to a non-RRSP
account.







                                   SCHEDULE VI

                        List of Transportation Agreements

                                [To be provided]






                                  SCHEDULE VII

                          Financing Lease Arrangements

                                [To be provided]




                                  SCHEDULE VIII

                               Title Deficiencies

                                [To be provided]




                                    EXHIBIT A

                                    [Form of]

                                  Loan Request

Mirant Canada Energy Capital, Ltd.
Suite 300, 440 - 2nd Avenue S.W.
Calgary, Alberta
T2P 5E9

Attention:        Managing Director

                           GREY WOLF EXPLORATION INC.

Gentlemen and Ladies:

         This Loan Request is delivered to you pursuant to Section 2.3 of the
Credit Agreement, dated as of December 20, 2001 (together with all amendments,
if any, from time to time made thereto, the "Credit Agreement"), between Grey
Wolf Exploration Inc., an Alberta corporation (the "Borrower"), and you. Unless
otherwise defined herein or the context otherwise requires, terms used herein
have the meanings provided in the Credit Agreement.

         Borrower hereby requests that a Loan be made in the aggregate principal
amount of $______________ on ______________, 20_____.

         Borrower hereby acknowledges that, pursuant to Article 5 of the Credit
Agreement, each of the delivery of this Loan Request and the acceptance by
Borrower of the proceeds of the Loans requested hereby constitute a
representation and warranty by Borrower that, on the date of such Loans, and
before and after giving effect thereto and to the application of the proceeds
therefrom, all statements set forth in Article 6 of the Credit Agreement are
true and correct in all material respects.

         Borrower agrees that if prior to the time of the Loan requested hereby
any matter certified to herein by it will not be true and correct at such time
as if then made, it will immediately so notify you.

         Borrower certifies that no Default of Event of Default has occurred and
is continuing.

         Except to the extent, if any, that prior to the time of the Loan
requested hereby you shall receive written notice to the contrary from Borrower,
each matter certified to herein shall be deemed once again to be certified as
true and correct at the date of such Loan as if then made.

         Please wire transfer the proceeds of the Loan to the Collateral
Account.






         Borrower has caused this Loan Request to be executed and delivered, and
the certification and warranties contained herein to be made, by its
____________ this ____ day of _____________, 200__.


                               GREY WOLF EXPLORATION INC.

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




                                    EXHIBIT B

                                    [Form of]

                          Opinion of Borrower's Counsel

                                 [see attached]





                                   EXHIBIT C-1

                                    [Form of]

                                    Debenture

                                 [see attached]





                                   EXHIBIT C-2

                                    [Form of]

                           Debenture Pledge Agreement

                                 [see attached]




                                    EXHIBIT D

                                    [Form of]

                        Override Royalty Agreement No. 1

                                 [see attached]




                                    EXHIBIT E

                                    [Form of]

                        Override Royalty Agreement No. 2

                                 [see attached]




                                    EXHIBIT F

                                    [Form of]

                              ISDA Master Agreement

                                 [see attached]






                                    EXHIBIT G

                                Development Plan

                                 [see attached]






                                    EXHIBIT H

                                    [Form of]

                            Environmental Certificate

                                 [see attached]








                                    EXHIBIT I

                                    [Form of]

                                Title Certificate

                                 [see attached]