Exhibit 10.31


                        PURCHASE AND SALE AGREEMENT AMONG

                 SLATTERY TRUST, STARBUCKS TRUST, TODD GRABOIS,
                    ROBERT NOVAK, PRENTIS B. TOMLINSON, JR.,
                 CALIBRE OIL & GAS, INC., CALIBRE ENERGY, L.L.C.

                                     AND

                               BENZ ENERGY LTD.


                                April 22, 1998





                                    INDEX
                                    -----




SECTION           TITLE                                                PAGE
- -------           -----                                                ----

                                                                    

         RECITALS.........................................................2

1.       INTERPRETATION...................................................3

2.       SALE AND PURCHASE BETWEEN CALIBRE LLC AND THE PURCHASE...........7

5.       REPRESENTATIONS AND WARRANTIES..................................10

6.       COVENANTS.......................................................22

7.       CLOSING.........................................................28

8.       TERMINATION.....................................................31

9.       GENERAL PROVISIONS..............................................32

10.      COUNTERPARTS....................................................34









                        PURCHASE AND SALE AGREEMENT

     PURCHASE AND SALE AGREEMENT dated for reference this 22nd day of
April, 1998.

AMONG:
          SLATTERY TRUST, of P.O. Box 61268, Houston, Texas 77208-1268

          ("Slattery")

                                                              OF THE FIRST PART

AND:      STARBUCKS TRUST, of P.O. Box 61268, Houston, Texas 77208-1268

          ("Starbucks")

                                                             OF THE SECOND PART

AND:      TODD GRAB01S, of 8919 Ashridge Park, Spring, Texas 77379

          ("Grabois")

                                                              OF THE THIRD PART

AND:      ROBERT NOVAK, of 6326 Willgus Trail, Lane, Texas 77066

          ("Novak")

                                                             OF THE FOURTH PART


AND:      PRENTIS B. TOMLINSON. JR, of 1000 Louisiana, Suite 1500,
          Houston, Texas 77002

          ("Tomlinson")

                                                              OF THE FIFTH PART

                                       1




AND:      CALIBRE OIL & GAS, INC. of 1000 Louisiana, Suite 1500,
          Houston, Texas 77002

          ("Calibre Inc.")

                                                              OF THE SIXTH PART

AND:      CALIBRE ENERGY L.L.C. of 1000 Louisiana, Suite 1500,
          Houston, Texas 77002

          ("Calibre LLC")

                                                            OF THE SEVENTH PART

AND:      BENZ ENERGY LTD. of 1305 - 1090 West Georgia Street,
          Vancouver, British Columbia, V6E 3V7

          (the "Purchaser")

                                                             OF THE EIGHTH PART

WHEREAS:

A.     Calibre LLC owns 1000 common shares in the capital of Calibre Inc.
(the "CI Shares"), being 100% of the issued and outstanding shares in the
capital of Calibre Inc.

B.     Calibre Inc. owns the oil and gas interests and properties described
in the attached Schedule "A" (the "Calibre Properties") and has the
liabilities described in the attached Schedule "D" (the "Calibre
Liabilities");

C .    Slattery, Starbucks, Grabois and Novak (the "Members") own, among
other assets, the oil and gas interests and properties described in Schedule
"B" hereof (the "Member Properties");

D.     Tomlinson owns, among other assets, the oil and gas interests and
properties described in Schedule "C" hereof (the "Tomlinson Properties");

E.     Calibre LLC, the Members, Tomlinson and the Purchaser entered into a
letter of understanding dated November 17, 1997 (the "Letter of
Understanding") which set forth the terms and conditions under which:

       (1)   the Purchaser agreed to purchase from Calibre LLC and Calibre
             LLC agreed to sell to the Purchaser all of the CI Shares;

                                       2





       (2)   the Purchaser agreed to purchase from the Members and the
             Members agreed to sell to the Purchaser the Member Properties;
             and

       (3)   the Purchaser agreed to purchase from Tomlinson and Tomlinson
             agreed to sell to the Purchaser the Tomlinson Properties.

E.    In accordance with the terms of the Letter of Understanding, Calibre
LLC, the Members, Tomlinson and the Purchaser have prepared this Agreement as
the definitive agreement to supersede and replace the Letter of Understanding
concerning the transactions contemplated by the Letter of Understanding.

NOW THEREFORE THIS AGREEMENT WITNESSES that for and in consideration of the
sum of TEN ($10.00) DOLLARS now paid by the Purchaser to each of Calibre LLC,
the Members and Tomlinson and of the premises, covenants and agreements
herein set forth, the parties hereto covenant and agree each with the other
as follows:

1.    INTERPRETATION

1.1   DEFINITIONS. For the purposes of this Agreement and the recitals and
any schedules hereto, unless the context otherwise requires, the following
words and phrases will have the meanings hereinafter ascribed to them:

      (a)   "AGREEMENT" means this Agreement including the recitals and
            schedules hereto, as amended and supplemented;

      (b)  "APPROVALS" means any and all approvals, orders, consents,
            filings, licences and permits required by any applicable law,
            rule, regulation, order, decree or statute of any Governmental
            Authority including all court, securities, regulatory,
            shareholder and stock exchange approvals;

      (c)   "BUSINESS DAY" means any day on which commercial banking
            institutions in Vancouver, British Columbia are open for the
            transaction of business other than Saturday, Sunday or any day
            which is a legal holiday in Vancouver, British Columbia;

      (d)   "CALIBRE INC." means Calibre Oil & Gas, Inc., a body corporate
            subsisting under the laws of Texas;

      (e)   "CALIBRE FINANCIAL STATEMENTS" means the unaudited financial
            statements of Calibre Inc. for the period ended March 31, 1998
            attached hereto as Schedule "G";

      (f)   "CALIBRE LIABILITIES" means all of the liabilities of Calibre
            Inc. which are described in Schedule "D" hereto;


                                       3




      (g)   "CALIBRE LLC" means Calibre Energy L.L.C., a limited liability
            company subsisting under the laws of Texas;

      (h)   "CALIBRE PERMITTED ENCUMBRANCES" means any liens, encumbrances,
            charges, claims or rights of third parties summarized in Schedule
            "F" hereto;

      (i)   "CALIBRE PROPERTIES" means the oil and gas interests and
            properties described in Schedule "A";

      (j)   "CI SHARES" means 1000 common shares in the capital of Calibre
            Inc., being all of the issued and outstanding shares in the
            capital of Calibre Inc.;

      (k)   "CLOSING" has the meaning set out in Section 7.1 hereof, and
            "time of Closing" means the time that Closing occurs;

      (l)   "CLOSING DATE" means the date which is five days following the
            date of receipt of all required Approvals, or such other date as
            the parties may agree but no later than May 15,1998;

      (m)   "COMPANY ACT" means COMPANY ACT, R.S.B.C. 1979, c.59, as amended;

      (n)   "CONSTATING DOCUMENTS" means the Memorandum, the Articles, the
            Articles of Incorporation, the Articles of Arrangement, the
            Articles of Continuance or the Articles of Amalgamation pursuant
            to which a corporation is incorporated, arranged, continued or
            amalgamated, as the case may be, together with any amendments
            thereto, the by-laws of such corporation, any special rights and
            restrictions associated with any class of shares and any
            shareholders' agreement which has been executed by such
            corporation and which governs in whole or in part such
            corporation's affairs;

      (o)   "EFFECTIVE TIME" means 7:00 a.m., local time of the location of
            the Member Properties and the Tomlinson Properties on November
            14, 1997 (the "Effective Time");

      (p)   "EXCHANGE" means the Vancouver Stock Exchange;

      (q)   "GOVERNMENTAL AUTHORITY" means any federal, provincial, state,
            municipal, county parish, local or regional governmental or
            quasi-governmental authority, domestic or foreign, and bureau,
            board, administrative or other agency or regulatory body or
            instrumentality thereof;

      (r)   "KNOWLEDGE" means the actual, conscious awareness of a party and
            not any form of constructive, vicarious or imputed knowledge.
            When used with reference to a corporation, "knowledge" means the
            character of knowledge defined in the preceding


                                       4




            sentence of any of such corporation's directors and executive
            officers, and when used with respect to a trust means the same
            character of knowledge of the trustees of the trust;

      (s)   "MEMBER PERMITTED ENCUMBRANCES" means any liens, encumbrances,
            charges, claims or rights of third parties summarized in Schedule
            "J" hereto;

      (t)   "MEMBER PROPERTIES" means the oil and gas interests and
            properties described in Schedule "B" hereof;

      (u)   "NOTICE" means any citation, directive, order, claim, judgment,
            letter or other communication, written or oral, actual or
            threatened, from any Person;

      (v)   "PERSON" means and includes an individual, a partnership, a
            corporation, a joint venture, a trust, an unincorporated
            association or other entity or government or any agency or
            political subdivision thereof;

      (w)   "PROPERTIES" means the Calibre LLC Properties, the Members
            Properties and the Tomlinson Properties;

      (x)   "PURCHASER" means Benz Energy Ltd., a body corporate subsisting
            under the laws of the Yukon;

      (y)   "PURCHASER FINANCIAL STATEMENTS" means the annual audited
            financial statements of the Purchaser for the period ending
            August 31, 1997 together with the unaudited financial statements
            of the Purchaser for the period ending December 31, 1997 attached
            hereto as Schedule "H";

      (z)   "PURCHASER'S LIABILITIES" means all of the liabilities of Benz
            which are described in Schedule "H" hereto;

      (aa)  "PURCHASER'S SHARES" means 1,927,426 common shares without par
            value in the capital of the Purchaser at a deemed price of $2.80
            per share;

      (bb)  "SELLER" means individually or collectively as called for in the
            context of the usage of the term Calibre LLC, the Members or
            Tomlinson.

      (cc)  "TAXES" means all income, franchise, business, property, sales,
            use, value added, withholding, excise, alternate minimum capital
            and other taxes required to be reported upon or paid to any
            domestic or foreign jurisdiction and all interest and penalties
            thereon;


                                       5




      (dd)  "TEXSTAR" means Texstar Petroleum, Inc., a wholly owned
            subsidiary corporation of the Purchaser, subsisting under the
            laws of Texas;

      (ee)  "TEXSTAR PROMISSORY NOTES" means the promissory notes to be
            issued by Texstar pursuant to subsections 3.2(a)(ii), (b)(ii),
            (c)(ii) and 4.2(11) hereof;

      (ff)  "TOMLINSON PERMITTED ENCUMBRANCES" means any liens, encumbrances,
            charges, claims or rights of third parties summarized in Schedule
            "K" hereto;

      (gg)  "TOMLINSON PROPERTIES" means the oil and gas interests and
            properties described in Schedule "C" hereof;

      (hh)  "U.S. GOVERNMENTAL AUTHORITY" means any federal, state, county,
            parish, or local governmental or quasi-governmental authority of
            or within the United States of America, and any bureau, board,
            administrative or other agency or regulatory body or
            instrumentality thereof; and

      (ii)  "U.S. LAWS" means laws and regulations of any U.S. Governmental
            Authority.

1.2   SCHEDULES. The following Schedules are attached hereto and form a part
hereof:




SCHEDULE            SUBJECT

                 
  "A"               Calibre Properties
  "B"               Member Properties
  "C"               Tomlinson Properties
  "D"               Calibre Liabilities
  "F"               Calibre Permitted Encumbrances
  "G"               Calibre Financial Statements
  "H"               Purchaser Financial Statements
  "J"               Member Permitted Encumbrances
  "K"               Tomlinson Permitted Encumbrances
  "N"               Options, Warrants and Other Convertible Securities



                                       6







2.    SALE AND PURCHASE BETWEEN CALIBRE LLC AND THE PURCHASER

2.1   SALE AND PURCHASE OF CI SHARES. Upon and subject to the terms and
conditions set forth in this Agreement, Calibre LLC hereby agrees to sell,
assign and transfer to the Purchaser, and the Purchaser hereby agrees to
purchase from Calibre LLC, on the Closing Date, the CI Shares free and clear
of all liens, charges and encumbrances of any kind whatsoever. The sale and
purchase of the CI Shares shall occur on the Closing Date but shall be
effective as of the Effective Date.

2.2   PURCHASE PRICE FOR THE CI SHARES. The purchase price for the CI Shares
shall be CDN$5,396,793 (US$3,820,713) (the "CI Purchase Price"), payable by
the issuance by the Purchaser to Calibre LLC of the Purchaser's Shares. The
sale and purchase of the CI Shares shall occur on the Closing Date but shall
be effective as of the Effective Date.

2.3   RESALE RESTRICTIONS. Calibre LLC hereby acknowledges and accepts that
the Purchaser's Shares to be issued under the terms of this Agreement may be
subject to certain resale restrictions imposed under such applicable
securities; laws and the rules of regulatory bodies having jurisdiction and
Calibre LLC agrees to comply with such requirements and restrictions.

3.    SALE AND PURCHASE BETWEEN THE MEMBERS AND THE PURCHASER

3.1   SALE AND PURCHASE OF THE MEMBER PROPERTIES. Upon and subject to the
terms and conditions set forth in this Agreement, the Members hereby agree to
sell, assign and transfer to the Purchaser, and the Purchaser hereby agrees
to purchase from the Members, the Member Properties. The sale and purchase of
the Member Properties shall occur on the Closing Date but shall be effective
as of the Effective Date.

3.2   PURCHASE PRICE FOR THE MEMBER PROPERTIES. The purchase price for the
Member Properties shall be US$339,150 (CDN$478,201), subject to the
adjustments provided for herein (the "MP Purchase Price") payable by the
issuance and delivery to:

      (a)   Starbucks of (1) a certified check, bank draft or wire transfer
            in the amount of US$26,100 (CDN$36,866); and (ii) a promissory
            note issued by Texstar Petroleum, Inc. ("Texstar") to Starbucks
            in the original principal amount of US$200,000 (CDN$282,501);

      (b)   Grabois of: (i) a certified check, bank draft or wire transfer
            in the amount of US$9,135 (CDN$12,903); and (ii) a promissory
            note issued by Texstar to Grabois in the original principal
            amount of US$70,000 (CDN$98,875); and

      (c)   Novak of: (i) a certified check, bank draft or wire transfer in
            the amount of US$3,915 (CDN$5,529); and (ii) a promissory note
            issued by Texstar to Grabois in the original principal amount of
            US$30,000 (CDN$42,375).

                                       7



All amounts to be delivered under subsections 3.2(a)(i), (b)(i) and (c)(ii) are
to be delivered in cash in escrow pursuant to section 7.6 hereof, on the date of
execution of this Agreement. The Texstar Promissory Note to be delivered under
subsections 3.2(a)(ii), (b)(ii) and (c)(ii) are to be delivered at Closing. Each
of the Texstar Promissory Notes issued under subsections 3.2(a)(ii), (b)(ii) and
(c)(ii) shall: (i) bear interest at the per annum rate of 10%, (ii) be payable
in two installments, with 50% of the original principal amount being due on
April 1, 1998, and the remaining principal balance being due September 1, 1998,
and (iii) be guaranteed by the Purchaser.

3.3   ALLOCATION. The MP Purchase Price shall be allocated to the Member
Properties in accordance with the schedule set forth in Exhibit C of Schedule
"B". Each of the Members and the Purchaser covenant and agree that the values
allocated to various portions of the Member Properties which are set forth on
Exhibit C to Schedule "B", shall be binding on the Members.

3.4   OWNERSHIP PRIOR TO EFFECTIVE TIME. Except as set forth in section 3.6, the
Members shall be entitled to all of the rights and incidents of ownership
generated from or attributable to the Member Properties prior to the Effective
Time, including the right to all Oil and Gas (as defined in Schedule "B")
produced from or attributable to the Member Properties prior to the Effective
Time. The Members shall bear and be responsible for the duties, liabilities,
costs, expenses and obligations of ownership attributable to the Member
Properties prior to the Effective Time, except as may be otherwise provided
herein.

3.5   OWNERSHIP AFTER EFFECTIVE TIME. Except as set forth in section 3.6, the
Purchaser shall be entitled to all of the rights and incidents of ownership
generated from or attributable to the Member Properties after the Effective
Time, including the right to all Oil and Gas thereafter produced from or
attributable to the Member Properties after the Effective Time. The Purchaser
shall assume, bear and be responsible for the duties, liabilities, costs,
expenses and obligations of ownership attributable to the Member Properties from
and after the Effective Time, including but not limited to compliance with
applicable environmental laws and plugging and abandonment of all MP Wells (as
defined in Schedule "B") in accordance with applicable laws and regulations,
except as may be otherwise provided herein.

3.6   For purposes of calculating the adjustments to the Purchase Price, the
Members shall be credited with proceeds of production attributable to the Member
Properties through January 3 1, 1998 and shall be debited with costs and
expenses (except for capital costs) of operating the Member Properties through
January 31, 1998.

4.  SALE AND PURCHASE BETWEEN TOMLINSON AND THE PURCHASER

4.1   SALE AND PURCHASE OF THE TOMLINSON PROPERTIES. Upon and subject to the
terms and conditions set forth in this Agreement, Tomlinson hereby agrees to
sell, assign and transfer to the Purchaser, and the Purchaser hereby agrees to
purchase from Tomlinson, on the Closing Date, the Tomlinson Properties.


                                       8



4.2   PURCHASE PRICE FOR THE TOMLINSON PROPERTIES. The purchase price for the
Tomlinson Properties shall be US$1,921,850 (CDN$2,714,630), subject to the
adjustments provided for herein (the "TP Purchase Price"), payable by the
issuance and delivery to Tomlinson of: (i) a certified check, bank draft or wire
transfer in the amount of US$221,850 (CDN$313,365); and (ii) a promissory note
issued by Texstar to Tomlinson in the original principal amount of US$1,700,000
(CDN$2,401,265). The amount to be delivered under this sections 4.2(i) is to be
delivered in escrow pursuant to section 7.6 hereof, on the date of execution of
this Agreement. The Texstar Promissory Notes to be delivered under this section
4.2(ii) is to be delivered at Closing. The promissory notes issued under section
4.2(ii), shall: (i) bear interest at the per annum rate of 10%, (ii) be payable
in two installments, with 50% of the original principal amount being due on
April 1, 1998, and the remaining principal balance being due September 1, 1998,
and (iii) be guaranteed by the Purchaser.

4.3   ALLOCATION. The TP Purchase Price shall be allocated to the Tomlinson
Properties in accordance with the schedule set forth in Exhibit C of Schedule
"C". Each of Tomlinson and the Purchaser covenant and agree that the values
allocated to various portions of the Tomlinson Properties which are set forth on
Exhibit C to Schedule "C" shall be binding on Tomlinson.

4.4   OWNERSHIP PRIOR TO EFFECTIVE TIME. Except as set forth in section 4.6,
Tomlinson shall be entitled to all of the rights and incidents of ownership
generated from or attributable to the Tomlinson Properties prior to the Closing
Date, including the right to all Oil and Gas (as defined in Schedule "C")
produced from or attributable to the Tomlinson Properties prior to the Closing
Date. Tomlinson shall bear and be responsible for the duties, liabilities,
costs, expenses and obligations of ownership attributable to the Tomlinson
Properties prior to the Effective Time, except as may be otherwise provided
herein.

4.5   OWNERSHIP AFTER EFFECTIVE TIME. Except as set forth in section 4.6, the
Purchaser shall be entitled to all of the rights and incidents of ownership
generated from or attributable to the Tomlinson Properties after the Closing
Date, including the right to all Oil and Gas thereafter produced from or
attributable to the Tomlinson Properties after the Closing Date. The Purchaser
shall assume, bear and be responsible for the duties, liabilities, costs,
expenses and obligations of ownership attributable to the Tomlinson Properties
from and after the Closing Date, including but not limited to compliance with
applicable environmental laws and plugging and abandonment of all Wells in
accordance with applicable laws and regulations, except as may be otherwise
provided herein.

4.6   For purposes of calculating the Purchase Price, Tomlinson shall be
credited with proceeds of production attributable to the Tomlinson Properties
through January 31, 1998 and shall be debited with costs and expenses (except
for capital costs) of operating the Tomlinson Properties through January 31,
1998.

                                       9


5.    REPRESENTATIONS AND WARRANTIES

5.1   GENERAL REPRESENTATIONS AND WARRANTIES OF CALIBRE LLC, THE MEMBERS
AND TOMLINSON. Each of Calibre LLC, the Members and Tomlinson severally (and
not jointly and severally) represents and warrants to the Purchaser, as
representations and warranties that are true at the date hereof or as of
Closing, and acknowledges that the Purchaser is relying on each of the
following representations and warranties in entering into this Agreement that:

      (a)   CAPACITY - it has all requisite power and capacity to execute and
            deliver this Agreement, to carry out the transactions to which it
            is a party and to duly observe and perform all of its covenants
            set out herein;

      (b)   AUTHORITY - the execution and delivery of this Agreement has been
            duly and validly authorized by all necessary action on its part
            and this Agreement constitutes a legal, valid and binding
            obligation of it enforceable against it in accordance with its
            terms subject, as to enforcement, to bankruptcy, insolvency,
            reorganization and other similar laws of general applicability
            relating to or affecting creditors' rights and to the
            availability of equitable remedies;

      (c)   ARPROVALS AND FILINGS - to its Knowledge, no exemption or
            Approval of any court or Governmental Authority or any third
            party is required to be obtained by it with respect to the
            execution and delivery of this Agreement by it or the
            consummation by it of the transactions contemplated hereby,
            except applicable securities legislation, Exchange approval and
            shareholder approval of Calibre LLC;

      (d)   NO DEFAULT/APPROVALS - provided that it has completed all the
            necessary filings in subsection 5.1(c), neither the execution
            and delivery of this Agreement nor the due observance and
            performance by it of its obligations contemplated herein shall:

            (i)   result in a breach or violation by the it of any of the
                  terms, conditions or provisions of any law, judgment,
                  order, injunction, decree or ruling to which it is subject;
                  or

            (ii)  except for rights held by EnCap Energy Capital Fund III,
                  L.P. ("EnCap") and Bank One, Texas N.A. ("Bank One")
                  pursuant to existing credit facilities, give any other
                  Person any right of termination, cancellation, acceleration
                  in respect of, or constitute a material breach of or
                  material default under, any material agreement, instrument
                  or commitment to which it is a party or by which the
                  Calibre Properties, the Member Properties or the Tomlinson
                  Properties, as the case may be, are bound or affected which
                  termination, cancellation, acceleration or breach, if any,
                  would likely materially and adversely affect Calibre Inc.
                  or any portion of the

                                       10




              Calibre Properties, the Member Properties or the Tomlinson
              Properties, as the case may be.

5.2   SPECIFIC REPRESENTATIONS AND WARRANTIES OF CALIBRE LLC. Calibre LLC
represents and warrants to the Purchaser, as representations and warranties that
are true at the date hereof or as of Closing, and acknowledges that the
Purchaser is relying on each of the following representations and warranties in
entering into this Agreement that:

        (a)   CALIBRE PROPERTIES--

              (i)   the Calibre Properties are fully and accurately described
                    in Schedule "A" hereto except for Bank One and EnCap
                    liens and encumbrances described in Exhibit A to Schedule
                    "D";

             (ii)   to the best of Calibre LLC's Knowledge, Calibre Inc. is
                    the owner (both beneficially and of record insofar as
                    such Calibre Properties are required to be recorded in
                    public real property records) of the Calibre Properties
                    described in Schedule "A", free of any liens, charges,
                    claims, encumbrances, with the exception of Calibre
                    Permitted Encumbrances which in the aggregate would not
                    materially and adversely affect the value or future
                    operation of the Calibre Properties;

            (iii)   to the best of Calibre LLC's Knowledge, no third party
                    has any options to purchase, or any preferential rights
                    to acquire or develop any of the Calibre Properties and
                    except as may constitute a Calibre Permitted Encumbrance;

             (iv)   except for Bank One and EnCap liens and encumbrances, the
                    Calibre Properties have been validly transferred by
                    Calibre LLC to Calibre Inc. and are free and clear of all
                    liens, charges and encumbrances except the Calibre
                    Permitted Encumbrances and no interest in all or any of
                    the Calibre Properties have been transferred or otherwise
                    disposed of by Calibre Inc.;

              (v)   all applicable requirements and procedures established by
                    applicable U.S. Laws with regard to the grant or
                    acquisition of the Calibre Properties have been fulfilled
                    except for such matters of non-compliance, if any, as
                    would not affect materially and adversely Calibre Inc. or
                    any portion of the Calibre Properties;

             (vi)   neither Calibre LLC nor Calibre Inc. is in breach or
                    default of any laws or agreement under which Calibre Inc.
                    has acquired the Calibre Properties except for such
                    breaches or defaults, if any, as would not affect
                    materially and adversely Calibre Inc. or any portion of
                    the Calibre Properties;

                                       11




            (vii)   Calibre LLC and Calibre Inc. are in material compliance
                    with all permits, licenses, contracts and agreements
                    relating to the Calibre Properties. Calibre LLC and
                    Calibre Inc. are in material compliance with all laws,
                    rules, regulations and orders of federal, state or local
                    entities which have jurisdiction over Calibre LLC,
                    Calibre Inc. or the Calibre Properties, except for
                    noncompliance with such laws, rules and regulations
                    which, individually or in the aggregate, do not and will
                    not affect materially and adversely Calibre Inc. or any
                    portion of the Calibre Properties; and

           (viii)   to the best of Calibre LLC's Knowledge, there is no suit,
                    action, claim, investigation or inquiry pending or
                    threatened arising out of or with respect to the
                    ownership, operation or environmental condition of the
                    Calibre Properties.

       (b)    STATUS AND CAPACITY OF CALIBRE INC,-- Calibre Inc. is a
              corporation duly incorporated and validly in existence in
              accordance with the laws of the State of Texas, and Calibre Inc.:

              (i)   is in good standing and up-to-date with all its corporate
                    filings required under the laws of its incorporating
                    jurisdiction;

             (ii)   has the corporate power and capacity to carry on the
                    business now carried on by it and to own, lease or
                    acquire the assets or interests in assets now owned or
                    leased by it including the Calibre Properties;

            (iii)   is duly qualified to carry on business in each
                    jurisdiction in which the conduct of its business or the
                    ownership or leasing of its properties and assets makes
                    such qualification necessary except in jurisdictions
                    where the failure to be so qualified would not likely
                    affect materially and adversely Calibre Inc. or any
                    portion of the Calibre Properties;

             (iv)   is not in default of any requirement under any applicable
                    U.S. Laws or other laws to which it is subject except for
                    such defaults, if any, as would not likely affect
                    materially and adversely Calibre Inc. or any portion of
                    the Calibre Properties; and

              (v)   has no subsidiaries and has no participation in any
                    company, limited partnership or sole proprietorship;

                                       12




       (c)    ORGANIZATION OF CALIBRE INC.--

              (i)   Calibre Inc. has an authorized capital of 1000 shares
                    with a par value of US$.01 per share of which 1000 shares
                    are issued and outstanding;

             (ii)   all of the CI Shares are legally and beneficially owned by
                    Calibre LLC;

            (iii)   the CI Shares are all validly issued and outstanding as
                    fully paid and nonassessable shares and are free and
                    clear of all liens, charges and encumbrances and are
                    shares with a right to vote;

             (iv)   no Person has any right, present or future, contingent or
                    absolute, to require Calibre Inc. to issue any share in
                    its capital and, in particular, there are no outstanding
                    securities of Calibre Inc. which are convertible into
                    shares in the capital of Calibre Inc. and there are no
                    outstanding options on or rights to subscribe for any of
                    the unissued shares in the capital of Calibre Inc., or
                    any agreements, options or understandings capable of
                    becoming options or agreements to purchase the CI Shares;

              (v)   effective upon the Closing Date no Person other than
                    Calibre LLC or its nominee will have any right of any
                    Kind or nature to vote the CI Shares or to appoint the
                    officers or directors of Calibre Inc.; and

             (vi)   on the Closing Date, the CI Shares shall be validly
                    issued and fully paid, and shall be shares with the right
                    to vote. On the Closing Date, Calibre LLC shall have the
                    complete and absolute right to sell, to transfer and to
                    cede legal and beneficial title to the Cl Shares, without
                    the existence of preferential rights or acquisition
                    options created by the Constating Documents or other
                    agreements of Calibre Inc. and Calibre Inc. has no debt
                    other than as described in Schedule "D" and will not
                    have any indebtedness for borrowed money, whether
                    principal or interest other than as described in Exhibit
                    A to Schedule "D";

        (d)   FINANCIAL STATUS OF CALIBRE INC.--

              (i)   the Calibre Financial Statements and all the financial
                    records of Calibre Inc. are true, correct and complete in
                    all material respects, have been prepared in accordance
                    with generally accepted accounting principles in the
                    United States applied on a consistent basis throughout
                    the periods involved, fairly represent the financial
                    condition of Calibre Inc. as of the dates set forth in
                    the balance sheets included therein and the results of
                    operation of Calibre Inc. for the respective periods
                    covered thereby;

                                       13




             (ii)   there are no outstanding debts between Calibre Inc. and
                    Calibre LLC or between Calibre Inc. and the officers or
                    directors of Calibre Inc. or the officers and directors
                    of Calibre LLC or the relatives or associates of the
                    aforementioned persons and no direct or indirect
                    contractual connection is in existence between them,
                    including absolute or contingent liabilities, save and
                    except as may arise in the ordinary course of business
                    out of employment relationships between Calibre Inc. and
                    such persons and except as described in Schedule "D";

            (iii)   there are no material liabilities of Calibre Inc. that
                    are not disclosed in the most recent balance sheet
                    included in the Calibre Financial Statements except those
                    incurred in the ordinary course of business since the
                    date of the Calibre Financial Statements and except as
                    described in Schedule "D";

             (iv)   since the date of the Calibre Financial Statements, there
                    has been no:

                    A.   material change in the financial condition of Calibre
                         Inc. or its assets, liabilities or business;

                    B.   indebtedness for borrowed money incurred by Calibre
                         Inc. that is not reflected in the Calibre Financial
                         Statements or on Schedule "D" hereto;

                    C.   termination, revision or significant renegotiation of
                         any material contract with third parties; or

                    D.   event or condition that may have influenced in an
                         adverse and significant manner the financial
                         condition or business of Calibre Inc., individually
                         or collectively, with the exception of all the events
                         derived from the execution of this Agreement;

        (e)   ACQUISITION OF THE PURCHASER'S SHARES--

              (i)   it has such Knowledge and experience in financial and
                    business matters as to be capable of evaluating the
                    merits and risks of an investment in the Purchaser's
                    Shares and it is able to bear the economic risk of loss
                    of its entire investment;

             (ii)   it has had access to such additional information, if any,
                    concerning the Purchaser as it has considered
                    necessary in connection with an investment in the
                    Purchaser's Shares;

                                       14



            (iii) it is acquiring the Purchaser's Shares for its own account,
                  for investment purposes only and not with a view to any
                  resale, distribution or other disposition of the
                  Purchaser's Shares in violation of the United States or
                  other applicable securities laws;

            (iv)  it understands that the Purchaser's Shares have not been
                  and will not be registered under the United States
                  Securities Act of 1933, as amended (the "Securities Act")
                  or the securities laws of any state of the United States
                  and that the sale contemplated hereby is being made in
                  reliance of an exemption from such registration
                  requirements;

            (v)   it acknowledges that it has dealt directly with the
                  Purchaser rather than through the facilities of a security
                  exchange, investment bankers, or by any other means of
                  public distribution; and

            (vi)  it acknowledges that it has a significant amount of prior
                  business experience in the oil and gas industry in which
                  the Purchaser will operate.

      (f)   RESALE OF THE PURCHASER'S SHARES -

            (i)   it agrees that if it decides to offer, sell or otherwise
                  transfer any of the Purchaser's Shares, it will not offer,
                  sell or otherwise transfer any of such Shares directly or
                  indirectly, unless:

                  A.  the sale is to the Purchaser;

                  B.  the sale is made outside the United States in a
                      transaction meeting the requirements of Rule 904 of
                      Regulation S under the Securities Act and in compliance
                      with applicable local laws and regulations;

                  C.  the sale is made pursuant to an exemption from the
                      registration requirements under applicable securities
                      laws including, without limiting the generality of the
                      forgoing, the Securities Act provided by Rules 144 and
                      145 thereunder and in accordance with any applicable
                      state securities or "Blue Sky" laws; or

                  D.  the Purchaser's Shares are sold in a transaction that
                      does not require an exemption from applicable
                      securities laws or registration under the Securities
                      Act or any applicable state or laws and regulations
                      governing the offer and sale of securities, and it has
                      prior to such sale furnished to the Purchaser an
                      opinion of counsel reasonably satisfactory to the
                      Purchaser;


                                      15



      (g)   LEGENDING OF CERTIFICATES - it acknowledges that the certificates
            representing the Purchaser's Shares will bear a legend in
            accordance with applicable securities laws, including a legend
            stating that such shares have not been registered under the
            Securities Act or the securities laws of any state of the United
            States and may not be offered for sale or sold unless registered
            under the Securities Act and the securities laws of all
            applicable states of the United States or an exemption from such
            registration requirements is available; and

      (h)   CONSENT TO NOTATION - it consents to the Purchaser making a
            notation on its records of giving instructions to any transfer
            agent of the Purchaser in order to implement the restrictions on
            transfer set forth and described herein.

5.3   SPECIFIC REPRESENTATIONS AND WARRANTIES OF CALIBRE LLC AND THE MEMBERS
CONCERNING MEMBERS PROPERTIES. Each of Calibre LLC and each of the Members
represents and warrants to the Purchaser, as representations and warranties
that are true at the date hereof or as of Closing, and acknowledges that the
Purchaser is relying on each of the following representations and warranties
in entering into this Agreement that:

      (a)   MEMBER PROPERTIES -

            (i)   the Member Properties are fully and accurately described in
                  Schedule "B" hereto;

            (ii)  to the best of Calibre LLC's and the Members Knowledge, the
                  Members are the owners (both beneficially and of record
                  insofar as such Member Properties are required to be
                  recorded in public real property records) of the Member
                  Properties described in Schedule "B" free of any liens,
                  charges, claims, encumbrances, with the exception of the
                  Member Permitted Encumbrances, which in the aggregate
                  would materially and adversely affect the value or future
                  operation of the Member Properties;

            (iii) no third party has any options to purchase, or any
                  preferential rights to acquire or develop any of the Member
                  Properties for which notices have not been sent to such
                  third parties, and except as may constitute a Member
                  Permitted Encumbrance;

            (iv)  the Member Properties have been validly transferred by
                  Calibre LLC to the Members and are free and clear of all
                  liens, charges and encumbrances except the Member Permitted
                  Encumbrances and no interest in all or any of the Member
                  Properties have been transferred or otherwise disposed of
                  by the Members;


                                      16



            (v)   all applicable requirements and procedures established by
                  applicable U.S. Laws with regard to the grant or
                  acquisition of the Member Properties have been fulfilled
                  except for such matters of non-compliance, if any, as would
                  not likely affect materially and adversely any portion of
                  the Member Properties;

            (vi)  none of the Members nor Calibre LLC is in breach or default
                  of any laws or agreement under which it has acquired the
                  Member Properties except for such breaches or defaults, if
                  any, as would not likely affect materially and adversely
                  any portion of the Member Properties;

            (vii) the Members and Calibre LLC are in material compliance with
                  all permits, licenses, contracts and agreements relating to
                  Member Properties. The Members and Calibre LLC are in
                  material compliance with all laws, rules, regulations and
                  orders of federal, state or local entities which have
                  jurisdiction over the Members, Calibre LLC or the Member
                  Properties, except for noncompliance with such laws, rules
                  and regulations which, individually or in the aggregate, do
                  not and will not affect materially and adversely any
                  portion of the Member Properties; and

           (viii) to the best of Calibre LLC's and the Members Knowledge,
                  there is no suit, action, claim, investigation or inquiry
                  pending or threatened arising out of or with respect to the
                  ownership, operation or environmental condition of any of
                  the Member Properties.

5.4 SPECIFIC REPRESENTATIONS AND WARRANTIES OF CALIBRE LLC AND TOMLINSON
CONCERNING TOMLINSON PROPERTIES. Each of Calibre LLC and Tomlinson represents
and warrants to the Purchaser, as representations and warranties that are true
at the date hereof or as of Closing, and acknowledges that the Purchaser is
relying on each of the following representations and warranties in entering into
this Agreement that:

      (a)   TOMLINSON PROPERTIES - each of Calibre LLC and Tomlinson
            represents and warrants, in respect of the Tomlinson Properties
            that:

            (i)   the Tomlinson Properties are fully and accurately described
                  in Schedule "C" hereto;

            (ii)  to the best of Calibre LLC's and Tomlinson's Knowledge,
                  Tomlinson is the owner (both beneficially and of record
                  insofar as such Tomlinson Properties are required to be
                  recorded in public real property records) of the Tomlinson
                  Properties described in Schedule "C" free of any liens,
                  charges, claims, encumbrances, with the exception of the
                  Tomlinson Permitted Encumbrances which in the aggregate
                  would materially and adversely affect the value or future
                  operations of the Tomlinson Properties;


                                      17





            (iii) no third party has any options to purchase, or any
                  preferential rights to acquire or develop any of the
                  Tomlinson Properties for which notices have not been sent
                  to such third parties, and except as may constitute a
                  Tomlinson Permitted Encumbrance;

            (iv)  the Tomlinson Properties have been validly transferred by
                  Calibre LLC to Tomlinson and are free and clear of all
                  liens, charges and encumbrances except the Tomlinson
                  Permitted Encumbrances and no interest in all or any of the
                  Tomlinson Properties have been transferred or otherwise
                  disposed of by Tomlinson;

            (v)   all applicable requirements and procedures established by
                  applicable U.S. Laws with regard to the grant or
                  acquisition of the Tomlinson Properties have been fulfilled
                  except for such matters of non-compliance, if any, as would
                  not likely affect materially and adversely any portion of
                  the Tomlinson Properties;

            (vi)  neither Tomlinson nor Calibre LLC is in breach or default
                  of any laws or agreement under which it has acquired the
                  Tomlinson Properties except for such breaches or defaults,
                  if any, as would not likely affect materially and adversely
                  any portion of the Tomlinson Properties;

            (vii) Tomlinson and Calibre LLC are in material compliance with
                  all permits, licenses, contracts and agreements relating to
                  the Tomlinson Properties. Tomlinson and Calibre LLC are in
                  material compliance with all laws, rules, regulations and
                  orders of federal, state or local entities which have
                  jurisdiction over Tomlinson, Calibre LLC or the Tomlinson
                  Properties, except for noncompliance with such laws, rules
                  and regulations which, individually or in the aggregate, do
                  not and will not affect materially and adversely any
                  portion of any of the Tomlinson Properties; and

           (viii) to the best of Calibre LLC's and Tomlinson's Knowledge,
                  there is no suit, action, claim, investigation or inquiry
                  pending or threatened against Calibre LLC or Calibre Inc.
                  or arising out of or with respect to the ownership,
                  operation or environmental condition of the Tomlinson
                  Properties.

5.5 REPRESENTATIONS AND WARRANTIES OF THE PURCHASER. The Purchaser represents
and warrants to Calibre LLC, the Members and Tomlinson, as representations and
warranties that are true at the date hereof, and acknowledges that Calibre LLC,
the Members and Tomlinson are relying on each of the following representations
and warranties in entering this Agreement that:


                                      18





       (a)   CAPACITY - the Purchaser has all requisite corporate power and
             capacity to execute and deliver this Agreement, to carry out the
             transactions to which it is a party and to duly observe and
             perform all its covenants set out herein;

       (b)   AUTHORITY - the execution and delivery of this Agreement have
             been duly and validly authorized by all necessary action on the
             part of the Purchaser and this Agreement constitutes a legal,
             valid and binding obligation of the Purchaser enforceable
             against it in accordance with its terms subject, as to
             enforcement, to bankruptcy, insolvency, reorganization and other
             similar laws of general applicability relating to or affecting
             creditors' rights and to the availability of equitable remedies;

       (c)   APPROVALS AND FILINGS - no exemption or Approval of any court or
             Governmental Authority or any third party is required to be
             obtained by the Purchaser with respect to the execution and
             delivery of this Agreement by the Purchaser or the consummation
             by the Purchaser of the transactions contemplated hereby,
             except, to the Purchaser's Knowledge, as follows:

             (i)     acceptance for filing by the Exchange of final
                     documentation with respect to the transactions
                     contemplated hereby;

             (ii)    the Purchaser filing a report on Form 20 with the British
                     Columbia Securities Commission pursuant to the
                     provisions of applicable securities legislation; and

             (iii)   the Purchaser filing a press release and a report on
                     Form 27 with the British Columbia Securities Commission
                     pursuant to the provisions of applicable securities
                     legislation;

       (d)   NO DEFAULT/APPROVALS - provided that the Purchaser has obtained
             the Approvals in subsection 5.5(c), neither the execution and
             delivery of this Agreement nor the due observance and
             performance by the Purchaser of its obligations contemplated
             herein shall:

             (i)     result in a breach or violation by the Purchaser of any
                     of the terms, conditions or provisions of any law,
                     Judgment, order, injunction, decree, ruling to which the
                     Purchaser is subject; or

             (ii)    give any other Person any right of termination,
                     cancellation, acceleration in respect of, or constitute
                     a material breach of or material default under, any
                     material agreement, instrument or commitment to which
                     the Purchaser is a party or by which its properties or
                     assets are bound or affected which termination,
                     cancellation, acceleration or breach, if any, would
                     likely affect materially and adversely the Purchaser or
                     its properties or assets;

                                       19


       (e)   STATUS AND CAPACITY - the Purchaser is a corporation duly
             organized, validly existing and is in good standing in the
             jurisdiction of its incorporation,

             (i)     is in good standing and up-to-date with all its corporate
                     filings required under the laws of its incorporating
                     jurisdiction;

             (ii)    has the corporate power and capacity to carry on the
                     business now carried on by it and to own, lease or
                     acquire the assets or interests in assets now owned or
                     leased by it;

             (iii)   is duly qualified to carry on business in each
                     jurisdiction in which the conduct of its business or the
                     ownership or leasing of its properties and assets makes
                     such qualification necessary except in jurisdictions
                     where the failure to be so qualified would not likely
                     affect materially and adversely the Purchaser or its
                     properties or assets;

             (iv)    is not in default of any requirement under any
                     applicable laws to which it is subject except for such
                     defaults, if any, as would not likely affect materially
                     and adversely the Purchaser or its properties or assets;

             (v)     is in material compliance with all permits, licenses,
                     contracts and agreements relating to its properties. The
                     Purchaser is in material compliance with all laws,
                     rules, regulations and orders of federal, state or local
                     entities which have jurisdiction over the Purchaser or
                     its properties, including but not limited to all
                     environmental regulations and laws, except for
                     noncompliance with such laws, rules and regulations
                     which, individually or in the aggregate, do not and will
                     not affect materially and adversely any portion of its
                     properties;

       (f)   ORGANIZATION OF THE PURCHASER -

             (i)     the authorized capital of the Purchaser consist of an
                     unlimited number of common shares, of which 32,508,357
                     are validly issued and outstanding as fully paid and
                     non-assessable shares as at the date of this Agreement;

             (ii)    on the Closing Date, the Purchaser's Shares, after
                     issuance, will be validly issued as fully paid and
                     non-assessable shares free and clear of all liens
                     charges and encumbrances, and shall be shares with the
                     right to vote;

             (iii)   no Person has any right, present or future, contingent
                     or absolute, to require the Purchaser to issue any share
                     in its capital and, in particular, there are no
                     outstanding securities of the Purchaser which are
                     convertible into shares in the capital of the Purchaser
                     and there are no outstanding options on or rights

                                       20


                     to subscribe for any of the unissued shares in the
                     capital of the Purchaser except as otherwise described
                     in Schedule "N" hereto (which shall be as of March 31,
                     1998); and

             (iv)    effective upon the Closing Date no Person other than
                     Calibre LLC or its nominees will have any right of any
                     kind or nature to vote the Purchaser's Shares;

       (g)   FINANCIAL STATUS OF THE PURCHASER -

             (i)     the Purchaser's Financial Statements and all the
                     financial records of the Purchaser are true, correct and
                     complete in all material respects, have been prepared in
                     accordance with generally accepted accounting principles
                     in Canada applied on a consistent basis throughout the
                     periods involved, fairly represent the financial
                     condition of the Purchaser as of the dates set forth in
                     the balance sheets included therein and the results of
                     operation of the Purchaser for the respective periods
                     covered thereby;

             (ii)    there are no outstanding debts between the Purchaser and
                     the officers or directors of the Purchaser or the
                     relatives or associates of the aforementioned persons
                     and no direct or indirect contractual connection is in
                     existence between them, including absolute or contingent
                     liabilities, save and except as may arise in the ordinary
                     course of business out of employment relationships
                     between the Purchaser and such persons or except as
                     described in Schedule "N";

             (iii)   since the date of the Purchaser's Financial Statements,
                     there has been no:

                      A.   material change in the financial condition of the
                           Purchaser or its assets, liabilities or business;

                      B.   indebtedness for borrowed money incurred by the
                           Purchaser that is not reflected in the Purchaser's
                           Financial Statements or on Schedule "H" hereto;

                      C.   termination, revision or significant renegotiation
                           of any material contract with third parties; or

                      D.   event or condition that may have influenced in an
                           adverse and significant manner the financial
                           condition or business of the Purchaser,
                           individually or collectively, with the exception
                           of all the events derived from the execution of
                           this Agreement; and

                                       21


       (h)   LITIGATION. To the best of the Purchaser's knowledge, there is
             no suit, action, claim, investigation or inquiry pending or
             threatened against the Purchaser or arising out of or with
             respect to the ownership, operation or environmental condition
             of its properties.

5.6    RELIANCE. Prior to executing this Agreement, Purchaser has been
afforded an opportunity to examine the Properties and such materials as it
has requested to be provided to it by Calibre LLC, the Members and Tomlinson,
to discuss with representatives of Calibre LLC, the Members and Tomlinson
such materials and the nature and operation of the Properties and to
investigate the condition, including the subsurface condition, of the
Properties and the condition of the personal property. In entering into this
Agreement, Purchaser has relied solely on the express representations and
covenants of Calibre LLC, the Members and Tomlinson in this Agreement, its
independent investigation of, and judgment with respect to, the personal
property and the Properties and the advice of its own legal, tax, economic,
environmental, engineering, geological and geophysical advisors and not on
any written or oral comments or statements of any representatives of, or
consultants or advisors engaged directly or indirectly by, Calibre LLC, the
Members and Tomlinson or any advisor to Calibre LLC, the Members and
Tomlinson.

5.7    SURVIVAL OF REPRESENTATIONS, WARRANTIES AND COVENANTS. The
representations, warranties and covenants made by any party to this Agreement
herein or pursuant hereto, including any statements contained in any
certificate or other instrument delivered by or on behalf of any party
pursuant to this Agreement, and shall not survive the completion of the
transactions contemplated hereunder.

6.     COVENANTS

6.1    GENERAL COVENANTS OF CALIBRE LLC, THE MEMBERS AND TOMLINSON. Each of
Calibre LLC, each Member and Tomlinson severally covenants and agrees with
the Purchaser as follows:

       (a)   to provide all necessary information regarding itself, Calibre
             Inc., the Calibre Properties, the Member Properties or the
             Tomlinson Properties, as the case may be, to the Exchange as may
             be required to obtain the approval of the Exchange for the
             transactions contemplated herein;

       (b)   until the Closing Date, none of Calibre LLC, Calibre Inc., the
             Members or Tomlinson, will perform any act or enter into any
             transaction or negotiation which interferes or is inconsistent
             with the completion of the transactions contemplated herein or
             would render inaccurate in any material way any of the
             representations and warranties set forth in sections 5.1
             through 5.4, as the case may be, as if such representations and
             warranties were made at a date subsequent to such act,
             transaction or negotiation unless such transaction or
             negotiation is entered into with the consent of the Purchaser;


                                       22




       (c)   until the Closing Date, to promptly discuss with the Purchaser
             any significant developments in or with respect to Calibre LLC,
             Calibre Inc., the Calibre Properties the Member Properties or
             the Tomlinson Properties, and to provide to the Purchaser all
             such information about Calibre LLC, Calibre Inc., the Calibre
             Properties, the Member Properties and the Tomlinson Properties,
             as the case may be, as the Purchaser may reasonably request on a
             timely and regular basis, and to afford, or cause to be
             afforded, to the Purchaser and to their accountants, counsel,
             financial advisors and other representatives, full access during
             normal business hours to Calibre LLC's and Calibre Inc.'s
             management, properties, books, contracts, commitments and
             records in its possession or to which it has access and to allow
             the Purchaser and such representatives to perform a diligent and
             complete examination of Calibre LLC, Calibre Inc., the Calibre
             Properties, the Member Properties and the Tomlinson Properties
             during such period, to furnish at the request of the Purchaser
             a copy of all filings with any regulatory - authority, and all
             other information concerning Calibre LLC, Calibre Inc., the
             Calibre Properties, the Member Properties and the Tomlinson
             Properties as the Purchaser may reasonably request;

       (d)   forthwith after execution and delivery of this Agreement, to
             take such steps and proceedings in good faith as may be
             reasonably required to obtain all consents, Approvals, waivers
             (including preferential rights) and agreements of all other
             parties and Governmental Authorities which are required for the
             Purchaser to complete the transactions contemplated herein;

       (e)   each of Calibre LLC, the Members and Tomlinson, as the case may
             be, will in good faith make reasonable efforts to cause all the
             conditions precedent on its part to be performed, as set out in
             sections 7.3 and 7.4, to be complied with on or before the
             Closing Date;

       (f)   as soon as reasonably possible after any of Calibre LLC, the
             Members or Tomlinson, as the case may be, has determined that a
             state of facts exists which results in or will result in the
             non-fulfilment of any of the material conditions precedent set
             forth in sections 7.3 or 7.4, Calibre LLC, the Members and/or
             Tomlinson, as the case may be, will notify the Purchaser of such
             state of facts; and

       (g)   provided the conditions set forth in sections 7.3 and 7.4 have
             been satisfied or waived by the Closing Date, Calibre LLC, the
             Members and Tomlinson will execute and deliver all such
             documents and certificates required to carry out the
             transactions contemplated herein to which it is a party.


                                       23



6.2    ADDITIONAL COVENANTS OF CALIBRE LLC CONCERNING MAINTENANCE OF THE
CALIBRE PROPERTIES. From the date of this Agreement until Closing, Calibre
LLC agrees and covenants to cause Calibre Inc. to:

       (a)   administer and operate the Calibre Properties in good and
             workmanlike manner, and conduct its business and operations in a
             prudent manner, and in substantially the same manner as prior to
             the date of this Agreement;

       (b)   not introduce any new methods of management, operation or
             accounting with respect to any of the Calibre Properties;

       (c)   maintain and keep the Calibre Properties in good condition and
             working order; preserve the Calibre Properties in full force and
             effect; and fulfil all contractual or other covenants,
             obligations and conditions imposed upon Calibre Inc. with
             respect to the Calibre Properties, including, but not limited,
             to payment of royalties, delay rentals, shut-in gas royalties
             and any and all other required payments;

       (d)   operate or cause to be operated the CI Wells (as defined in
             Schedule "A") in accordance with generally accepted oil field
             practices and standards;

       (e)   not enter into agreements to drill new wells or to rework, plug
             back, deepen, plug or abandon any existing well or wells on the
             CI Leases (as defined in Schedule "A"), nor commence any
             drilling, reworking or completing or other operations or make or
             authorize any expenditures (except for emergency operations and
             operations required under presently existing contractual
             obligations) without giving notice to and consulting with the
             Purchaser; provided that such notice to and consultation with
             the Purchaser shall not be required with respect to any single
             expenditure that does not exceed Fifty Thousand Dollars
             ($50,000.00) or aggregate expenditures that do not exceed One
             Hundred Thousand Dollars ($100,000.00) (in either case, net to
             Calibre Inc.'s working interest);

       (f)   not voluntarily relinquish its position as operator to anyone
             other than the Purchaser with respect to any of the Calibre
             Properties or abandon any of the Calibre Properties;

       (g)   not, without the prior written consent of the Purchaser, (i)
             enter into any agreement or arrangement transferring, selling or
             encumbering any of the Calibre Properties; (ii) grant any
             preferential or other right to purchase or agree to require the
             consent of any party to the transfer and assignment of the
             Calibre Properties to the Purchaser; (iii) enter into any new
             sales contracts or supply contracts; or (iv) incur or agree to
             incur any material contractual obligation or liability (absolute
             or contingent) with respect to the Calibre Properties except as
             otherwise provided herein; and


                                       24



       (h)   promptly provide the Purchaser with written notice of (i) any
             claims, demands, suits or actions made against Calibre Inc.
             which materially affect the Calibre Properties; or (ii) any
             proposal from a third party to engage in any material
             transaction (e.g. a farmout) with respect to the Calibre
             Properties.

6.3    ADDITIONAL COVENANTS OF THE MEMBERS CONCERNING MAINTENANCE OF THE
MEMBER PROPERTIES. From the date of this Agreement until Closing, each of the
Members covenants and agrees to:

       (a)   administer and operate the Member Properties in good and
             workmanlike manner, and conduct its business and operations in a
             prudent manner, and in substantially the same manner as prior to
             the date of this Agreement;

       (b)   not introduce any new methods of management, operation or
             accounting with respect to any or all of the Member Properties;

       (c)   maintain and keep the Member Properties in good condition and
             working order; preserve the Member Properties in full force and
             effect; and fulfil all contractual or other covenants, obligations
             and conditions imposed upon the Members with respect to the
             Member Properties, including, but not limited, to payment of
             royalties, delay rentals, shut-in gas royalties and any and
             all other required payments;

       (d)   operate or cause to be operated the MP Wells (as defined in
             Schedule "B") in accordance with generally accepted oil field
             practices and standards;

       (e)   not enter into agreements to drill new wells or to rework, plug
             back, deepen, plug or abandon any existing well or wells on the
             MP Leases (as defined in Schedule "B"), nor commence any
             drilling, reworking or completing or other operations or make or
             authorize any expenditures (except for emergency operations and
             operations required under presently existing contractual
             obligations) without giving notice to and consulting with the
             Purchaser; provided that such notice to and consultation with
             prior written consent of the Purchaser shall not be required
             with respect to any single expenditure that does not exceed
             Fifty Thousand Dollars ($50,000.00) or aggregate expenditures
             that do not exceed One Hundred Thousand Dollars ($100,000.00)
             (in either case, net to the Members' working interest), and
             provided further that the terms of this paragraph shall not
             apply to any expenditures of the Members which will not be
             charged to the Purchaser.

       (f)   not voluntarily relinquish its position as operator to anyone
             other than the Purchaser with respect to any of the Member
             Properties or abandon any of the Member Properties;


                                       25



       (g)   not, without the prior written consent of the Purchaser, (i)
             enter into any agreement or arrangement transferring, selling or
             encumbering any of the Member Properties; (ii) grant any
             preferential or other right to purchase or agree to require the
             consent of any party to the transfer and assignment of the
             Member Properties to the Purchaser; (iii) enter into any new
             sales contracts or supply contracts; or (iv) incur or agree to
             incur any material contractual obligation or liability (absolute
             or contingent) with respect to the Member Properties except as
             otherwise provided herein; and

       (h)   promptly provide the Purchaser with written notice of (i) any
             claims, demands, suits or actions made against the Members which
             materially affect the Member Properties; or (ii) any proposal
             from a third party to engage in any material transaction (e.g. a
             farmout) with respect to the Member Properties.

6.4    ADDITIONAL COVENANTS OF TOMLINSON CONCERNING MAINTENANCE OF THE
TOMLINSON PROPERTIES. From the date of this Agreement until Closing,
Tomlinson covenants and agrees to:

       (a)   administer and operate the Tomlinson Properties in good and
             workmanlike manner, and conduct its business and operations in a
             prudent manner, and in substantially the same mariner as prior
             to the date of this Agreement;

       (b)   not introduce any new methods of management, operation or
             accounting with respect to any or all of the Tomlinson
             Properties;

       (c)   maintain and keep the Tomlinson Properties in good condition and
             working order; preserve the Tomlinson Properties in full force
             and effect; and fulfil all contractual or other covenants,
             obligations and conditions imposed upon Tomlinson with respect
             to the Tomlinson Properties, including, but not limited, to
             payment of royalties, delay rentals, shut-in gas royalties and
             any and all other required payments;

       (d)   operate or cause to be operated the TP Wells (as defined in
             Schedule "C") in accordance with generally accepted oil field
             practices and standards;

       (e)   not enter into agreements to drill new wells or to rework, plug
             back, deepen, plug or abandon any existing well or wells on the
             TP Leases (as defined in Schedule "C"), nor commence any
             drilling, reworking or completing or other operations or make or
             authorize any expenditures (except for emergency operations and
             operations required under presently existing contractual
             obligations) without giving notice to and consulting with the
             Purchaser; provided that such notice to and consultation with of
             the Purchaser shall not be required with respect to any single
             expenditure that does not exceed Fifty Thousand Dollars
             ($50,000.00) or aggregate expenditures that do not exceed One
             Hundred Thousand Dollars ($100,000.00) (in either case, net to
             Tomlinson's working interest), and provided further that the
             terms of this paragraph


                                       26


            shall not apply to any expenditures of the Tomlinson which will
            not be charged to the Purchaser.

      (f)   not voluntarily relinquish its position as operator to anyone
            other than the Purchaser with respect to any of the Tomlinson
            Properties or abandon any of the Tomlinson Properties;

      (g)   not, without the prior written consent of the Purchaser, (i)
            enter into any agreement or arrangement transferring, selling or
            encumbering any of the Tomlinson Properties; (ii) grant any
            preferential or other right to purchase or agree to require the
            consent of any party to the transfer and assignment of the
            Tomlinson Properties to the Purchaser; (iii) enter into any new
            sales contracts or supply contracts; or (iv) incur or agree to
            incur any material contractual obligation or liability (absolute
            or contingent) with respect to the Tomlinson Properties except as
            otherwise provided herein; and

      (h)   promptly provide the Purchaser with written notice of (i) any
            claims, demands, suits or actions made against the Members which
            materially affect the Tomlinson Properties; or (ii) any proposal
            from a third party to engage in any material transaction (e.g. a
            farmout) with respect to the Tomlinson Properties.

6.5   COVENANTS OF THE PURCHASER. The Purchaser covenants and agrees with the
Vendor as follows:

      (a)   until the Closing Date, the Purchaser will not perform any act or
            enter into any transaction or negotiation which interferes or is
            inconsistent with the completion of the transactions contemplated
            herein or would render inaccurate in any material way any of the
            representations and warranties set forth in section 5.5 as if
            such representations and warranties were made at a date
            subsequent to such act, transaction or negotiation unless such
            transactions or negotiations are entered into with the consent of
            Calibre LLC, the Members and Tomlinson;

      (b)   forthwith after execution and delivery of this Agreement, the
            Purchaser will take such steps and proceedings in good faith as
            may be reasonably required to obtain all consents, approvals,
            waivers (including preferential rights) and agreements of all
            other parties and Governmental Authorities which are required
            for the Purchaser to complete the transactions contemplated
            herein;

      (c)   the Purchaser will promptly apply for and diligently seek
            approval of the Exchange for the transactions contemplated herein;

      (d)   the Purchaser will, subject to the terms of this Agreement, pay
            the MP Purchase Price to the Members, the TP Purchase Price to
            Tomlinson and issue the Purchaser's

                                       27


            Shares to Calibre LLC as fully paid and non-assessable shares in
            accordance with the terms of this Agreement;

      (e)   the Purchaser will in good faith make reasonable efforts to cause
            all the conditions precedent on its part to be performed, as set
            out in sections 7.3 and 7.5, to be complied with on or before the
            Closing Date;

      (f)   as soon as reasonably possible after the Purchaser has determined
            that a state of facts exists which results in or will result in
            the non-fulfilment of any of the material conditions precedent
            set forth in sections 7.3 or 7.5, the Purchaser will notify
            Calibre LLC, the Members and Tomlinson of such state of facts; and

      (g)   provided the conditions set forth in sections 7.3 and 7.5 have
            been satisfied or waived by the Closing Date, the Purchaser will
            execute and deliver all such documents and certificates required
            to carry out the transactions contemplated herein to which the
            Purchaser is a party.

7.    CLOSING

7.1   TIME AND PLACE OF CLOSING. The Closing shall take place at 10:00 a.m.
(PST time) on the Closing Date at the offices of Porter & Hedges, L.L.P., in
Suite 3500,700 Louisiana, Houston, Texas 77002 or such other place as the
parties may agree.

7.2   CLOSING DOCUMENTS. On the Closing Date the parties will table the
following documents and instruments and take the following steps:

      (a)   Calibre LLC will table any Approvals required for the transfer of
            the C1 Shares to the Purchaser;

      (b)   Calibre LLC will table for delivery to the Purchaser written
            opinions of one or more counsel to Calibre LLC dated the Closing
            Date in a form reasonably satisfactory to the Purchaser that:

            (i)     Calibre has all requisite power and capacity to execute and
                    deliver all documents set out in this Agreement and to duly
                    observe and perform all its covenants set out herein;

            (ii)    the execution, delivery and performance by Calibre of the
                    agreements to effect the transactions contemplated
                    herewith to which it is a party has been duly authorized
                    by all necessary legal action on the part of Calibre;

            (iii)   which confirms Calibre Inc.'s corporate status and power;

                                       28


      (c)   Calibre will table for delivery to the Purchaser share
            certificates evidencing ownership of the CI Shares duly endorsed
            (or accompanied by duly executed stock powers) for transfer into
            the name of the Purchaser;

      (d)   the Purchaser will table for delivery to Calibre LLC a share
            certificate or certificates evidencing ownership of the
            Purchaser's Shares duly registered in the name of Calibre LLC;

      (e)   the Members shall deliver to the Purchaser, in form satisfactory
            to the Members and the Purchaser and the appropriate government
            agencies, an Assignment and Bill of Sale effecting the sale,
            transfer, conveyance and assignment of the Member Properties in
            the forms set forth as Exhibit D to Schedule "B";

      (f)   the Purchaser will table for delivery to the Members, the Texstar
            Promissory Notes, as set out in section 3.2 hereof;

      (g)   Tomlinson shall deliver to the Purchaser, in form satisfactory to
            Tomlinson and the Purchaser and the appropriate government
            agencies, an Assignment and Bill of Sale effecting the sale,
            transfer, conveyance and assignment of the Tomlinson Properties
            in the forms set forth as Exhibit D to Schedule "C";

      (h)   the Purchaser will table for delivery to Tomlinson, the Texstar
            Promissory Note, as set out in section 4.2 hereof;

      (i)   each of the parties hereto will execute and table for delivery,
            or cause to be executed and tabled for delivery, to the
            appropriate parties all such other documents and instruments
            reasonably required by the parties to effectively consummate the
            transactions hereunder.

7.3   JOINT CONDITIONS PRECEDENT TO CLOSING. The respective obligations of
each of the parties hereto to complete the Closing shall be subject to
satisfaction, on or before the Closing Date, of the following, conditions, any
of which may be waived by both the Purchaser and Calibre LLC, the Members and
Tomlinson acting together:

      (a)   there shall not be in force any order or decree of a court of
            competent jurisdiction or any Governmental Authority restraining,
            interfering with or enjoining the consummation of the
            transactions contemplated herein;

      (b)   all Approvals required for the completion of the transactions
            contemplated herein shall have been obtained or received from the
            Persons having jurisdiction in the circumstances; and

      (c)   this Agreement shall not have been terminated under Article 8.

                                       29


7.4   CONDITIONS TO OBLIGATIONS OF CALIBRE LLC, THE MEMBERS AND TOMLINSON. The
obligation of Calibre LLC, the Members and Tomlinson to complete the Closing is
subject to the satisfaction, on or before the Closing Date, of the following
conditions, any of which may be waived by it without prejudice to its rights to
rely on any other or others of them:

      (a)   each of the covenants, agreements, acts and undertakings of the
            Purchaser to be performed on or before the Closing Date pursuant
            to the terms of this Agreement shall have been duly performed by
            it, including the delivery of the documents specified in
            subsections 7.2(d), (f) and (h);

      (b)   the warranties and representations of the Purchaser contained in
            section 5.5 shall be true in all material respects on the Closing
            with the same effect as though made at and as of such time;

      (c)   the results of Calibre LLC's due diligence examination of the
            Purchaser shall be satisfactory to Calibre LLC, the Members and
            Tomlinson;

      (d)   there shall have been no material adverse change in the financial
            condition or assets of the Purchaser.

      (e)   no Governmental Authority shall have enacted any statute,
            regulation or bylaws or announced any policy that will materially
            and adversely affect the value of the Purchaser's Shares except
            as otherwise contemplated by the terms of this Agreement.

7.5   CONDITIONS TO OBLIGATIONS OF THE PURCHASER. The obligation of the
Purchaser to complete the Closing is subject to the satisfaction, on or before
the Closing Date, of the following conditions, any of which may be waived by it
without prejudice to its right to rely on any other or others of them:

      (a)   each of the covenants, agreements, acts and undertakings of
            Calibre LLC, the Members and Tomlinson, as the case may be, to be
            performed on or before the Closing Date pursuant to the terms of
            this Agreement shall have been duly performed by them, including
            the execution and delivery of the documents specified in
            subsections 7.2(a), (b), (c), (e) and (g);

      (b)   the warranties and representations of each of Calibre LLC, the
            Members and Tomlinson contained in Sections 5.1 through 5.4 shall
            be true in all material respects on the Closing with the same
            effect as though made at and as of such time;

      (c)   the results of the Purchaser's due diligence examination of
            Calibre LLC, Calibre Inc., the Calibre Properties, the Member
            Properties and the Tomlinson Properties shall be satisfactory to
            the Purchaser;

                                       30




       (d)   there shall have been no material adverse change in the
             financial condition or assets of Calibre Inc.;

       (e)   there shall have been no options, warrants or other rights to
             acquire shares of Calibre Inc. or agreements or options to
             acquire the CI Shares other than this Agreement;

       (f)   there shall be no increase in the number of shares of Calibre
             Inc. issued and outstanding above the numbers of such shares
             issued and outstanding as at the date hereof; and

       (g)   no Governmental Authority shall have enacted any statute,
             regulation or bylaws or announced any policy that will
             materially and adversely affect the value of the CI Shares, the
             Calibre Properties, the Member Properties or the Tomlinson
             Properties.

7.6    ESCROW OF CLOSING DOCUMENTS. The parties recognize that certain
formalities for the completion of the transactions contemplated by this
Agreement and Approvals may not be completed as at the Closing Date. In such
circumstance, the parties will place all closing documents in escrow with
solicitors for the Purchaser until such time as confirmations regarding
completion of these formalities and Approvals are received by the Purchaser
or as otherwise required on terms agreeable by each of the parties, acting
reasonably. Upon receipt of such confirmations, the escrow will be terminated
and all closing documents will be released to the parties entitled thereto.
The parties will take all actions as may be necessary to formalize the
transactions contemplated hereby.

8.     TERMINATION

8.1    MUTUAL TERMINATION. This Agreement may, prior to the Closing Date, be
terminated by the Purchaser, Calibre LLC, the Members and Tomlinson by
written agreement notwithstanding anything contained herein.

8.2    UNILATERAL TERMINATION.

       (a)   If any of the conditions contained in section 7.3 shall not be
             fulfilled or performed on or before the Closing Date and such
             condition has not been waived by the parties in accordance with
             the provisions of section 7.3, either of the parties may
             terminate this Agreement by notice to the other party and in
             such event both parties shall be released from all obligations
             under this Agreement and all rights of specific performance by
             either party shall terminate. Calibre LLC's, the Members' and
             Tomlinson's right to so terminate shall be exercised by Calibre
             LLC.

       (b)   If any of the conditions contained in section 7.4 shall not be
             fulfilled or performed on or before the Closing Date, Calibre
             LLC, the Members and Tomlinson may terminate this Agreement by
             written notice to the Purchaser signed by Calibre LLC

                                       31


             and in such event Calibre LLC, the Members and Tomlinson shall
             be released from all obligations hereunder and all rights of
             specific performance by any of the parties hereto shall
             terminate.

       (c)   If any of the conditions contained in section 7.5 shall not be
             fulfilled or performed on or before the Closing Date, the
             Purchaser may terminate this Agreement by written notice to
             Calibre LLC as representative of Calibre LLC, the Members, and
             Tomlinson, and in such event the Purchaser shall be released
             from all obligations hereunder and all rights of specific
             performance by any of the parties hereto shall terminate.

8.3    NOTICE OF UNFULFILLED CONDITIONS. If any party hereto shall determine
at any time prior to the Closing Date that it intends to terminate this
Agreement because of any unfulfilled and/or unperformed condition precedent
contained in this Agreement on the part of the other party to be fulfilled
and/or performed, it shall so notify the other party forthwith upon making
such determination to the end that such other party shall have the right and
opportunity to take such steps, at its own expense, as may be necessary for
the purpose of fulfilling and/or performing such condition precedent within a
reasonable period of time, but in no event later than 30 days after the
receipt of such Written notice by such other party of its intention to
terminate this Agreement.

9.     GENERAL PROVISIONS

9.1    Time is and will be of the essence of each and every provision of this
Agreement.

9.2    Each of the parties will, at their respective expense, execute and
deliver all such further documents and instruments, give all such further
assurances, and do all such acts and things as the other or its solicitors
may, either before or after the Closing Date, reasonably require to carry out
the full intent and meaning of this Agreement.

9.3    This Agreement contains the whole agreement among Calibre LLC, the
Members, Tomlinson and the Purchaser in respect of the subject matter hereof
and supersedes and replaces the Letter of Understanding and all prior
negotiations, communications and correspondence. There are no warranties,
representations, terms, conditions or collateral agreements, express or
implied, statutory or otherwise, other than as expressly set forth in this
Agreement.

9.4    This Agreement will entire to the benefit of and be binding upon the
parties and each of them and their respective heirs, successors, liquidators,
executors and assigns. No party may assign any of its right, title or
interest in, to or under this Agreement, nor will any such purported
assignment be valid amongst the parties hereto, except with the prior written
consent of all parties hereto, such consent not to be unreasonably withheld.

9.5    This Agreement is being delivered in and is intended to be performed
in British Columbia, and shall be construed and interpreted in accordance
with the laws of British Columbia and the laws

                                       32


of Canada applicable therein. The parties irrevocably attorn to the
jurisdiction of the arbitrators and courts of British Columbia and the venue
for any actions or arbitrations arising out of this Agreement will be
Vancouver, British Columbia.

9.6    Any notices required or permitted to be given under this Agreement
will be in writing and will be duly and properly given and received if
delivered, telecopied or mailed by prepaid post, in each case addressed to
the intended recipient at its respective address appearing on the first page
of this Agreement (or at such other address as a party may from time to time
designate by notice in writing to the other parties in accordance with this
section), and any such notice will be deemed to have been given and received,
if delivered, when delivered to such address, and if telecopied, on the next
business day after the telecopying of the same or, if mailed, on the tenth
business day after depositing the same in any post office in Canada unless
postal service is disrupted after the mailing of such notice, in which case
the party giving notice will forthwith give such notice in another permitted
manner.

9.7    No amendment, waiver, termination or variation of the terms,
conditions, warranties, covenants, agreements and undertakings set out herein
will be of any force or effect unless the same is reduced to writing duly
executed by all parties hereto in the same manner and with the same formality
as this Agreement is executed.

9.8    In the event that any date on which any action is required to be taken
or by which notice is to be received hereunder is not a Business Day, such
action shall be required to be taken on and such notice shall be required to
be received by the next succeeding day which is a Business Day.

9.9    No waiver of any of the provisions of this Agreement will constitute a
waiver of any other provision (whether or not similar) and no waiver will
constitute a continuing waiver unless otherwise expressly provided.

9.10   The representations, warranties, covenants and agreements contained in
this Agreement shall not merge in the Closing and shall have no further force
or effect from and after the Closing Date.

9.11   WAIVER OF REPRESENTATION TO THE EXTENT REQUIRED BY APPLICABLE LAW TO
BE OPERATIVE, THE DISCLAIMERS OF CERTAIN REPRESENTATIONS AND WARRANTIES IN
THIS SECTION 9.11 ARE "CONSPICUOUS DISCLAIMERS" FOR PURPOSES OF ANY
APPLICABLE LAW, RULE OR ORDER. THE EXPRESS REPRESENTATIONS OF CALIBRE LLC,
THE MEMBERS AND TOMLINSON CONTAINED IN THIS AGREEMENT ARE EXCLUSIVE AND ARE
IN LIEU OF, AND CALIBRE LLC, THE MEMBERS AND TOMLINSON EXPRESSLY DISCLAIM AND
NEGATE AND PURCHASER HEREBY WAIVES, ANY REPRESENTATION OR WARRANTY, EXPRESS
OR IMPLIED, AT COMMON LAW, BY STATUTE OR OTHERWISE, WITH RESPECT TO THE
QUALITY, QUANTITY OR VOLUME OF THE RESERVES, IF ANY, OF OIL, GAS OR OTHER
HYDROCARBONS IN OR UNDER THE PROPERTIES, THE ENVIRONMENTAL CONDITION, BOTH
SURFACE AND

                                       33


SUBSURFACE, OR OTHER CONDITIONS OF THE PROPERTIES, OR THE OWNERSHIP OR
OPERATION OF THE PROPERTIES OR ANY PART THEREOF OR FOR CLAIMS BY PURCHASER
FOR DAMAGES BECAUSE OF DEFECTS, WHETHER KNOWN OR UNKNOWN. EXCEPT AS OTHERWISE
PROVIDED HEREIN AND EXCEPT FOR THE TITLE WARRANTY CONTAINED IN THE ASSIGNMENT
AND BILL OF SALE, PURCHASER AGREES THAT CALIBRE LLC, THE MEMBERS AND
TOMLINSON ARE CONVEYING THE ASSETS WITHOUT REPRESENTATION OR WARRANTY AND
CALIBRE LLC, THE MEMBERS AND TOMLINSON DO NOT MAKE OR PROVIDE, AND PURCHASER
HEREBY WAIVES, ANY WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, AT COMMON
LAW, BY STATUTE OR OTHERWISE AND SPECIFICALLY IN THE CASE OF THE PERSONAL
PROPERTY WITHOUT ANY REPRESENTATION OR WARRANTY, EXPRESS OR IMPLIED, RELATING
TO THE QUALITY, MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, CONFORMITY
TO SAMPLES, OR CONDITIONS OF ANY OF THE PROPERTIES. CALIBRE LLC, THE MEMBERS
AND TOMLINSON DISCLAIM AND NEGATE, AND PURCHASER HEREBY WAIVES ALL OTHER
REPRESENTATIONS AND WARRANTIES, EXPRESS OR IMPLIED, BY STATUTE OR OTHERWISE
OR FOR CLAIMS BY PURCHASER FOR DAMAGES BECAUSE OF DEFECTS, WHETHER KNOWN OR
UNKNOWN. THE ITEMS OF PERSONAL PROPERTY, EQUIPMENT, IMPROVEMENTS, FIXTURES
AND APPURTENANCES CONVEYED AS PART OF THE PROPERTIES ARE SOLD, AND PURCHASER
ACCEPTS SUCH ITEMS "AS IS, WITH ALL FAULTS." THERE ARE NO WARRANTIES THAT
EXTEND BEYOND THE FACE OF THIS AGREEMENT. PURCHASER ACKNOWLEDGES THAT THIS
WAIVER IS CONSPICUOUS.

10.    COUNTERPARTS

10.1   This Agreement, and any certificates or other writing delivered in
connection herewith, may be executed in any number of counterparts with the
same effect as if all parties had all signed the same documents, and all such
counterparts and adopting instruments will be construed together and will
constitute one and the same instrument. The execution of this Agreement and
any other writing by any party hereto or thereto will not become effective
until counterparts hereof or thereof, as the case may be, have been executed
by all the parties hereto or thereto, and executed copies delivered to each
party who is a party hereto or thereto. Such delivery may be made by
facsimile transmission of the execution page or pages, hereof or thereof, to
each of the other parties by the party signing the

                                       34






particular counterpart, provided that forthwith after such facsimile
transmission, an originally executed execution page or pages is forwarded by
prepaid express courier to each of the other parties by the party signing
the particular counterpart.

IN WITNESS WHEREOF the parties have executed and delivered this Agreement as
of the day and year first above written.


BENZ ENERGY LTD.                      )
                                      )
By: /s/ [illegible]                   )
   ---------------------------------  )
Authorized Signatory                  )





CALIBRE ENERGY, L.L.C.                )
                                      )
                                      )
                                      )
By: /s/ Heather J. Tomlinson          )
   ---------------------------------  )
Authorized Signatory   Manager        )





CALIBRE OIL & GAS, INC.               )
                                      )
                                      )
                                      )
                                      )
By: /s/ Heather J. Tomlinson          )
   ---------------------------------  )
Authorized Signatory   Director       )


                                       35







THE SLATTERY TRUST                    )
                                      )
                                      )
                                      )
By: /s/ Prentis Tomlinson             )
   ---------------------------------
Name: Prentis Tomlinson, Trustee





THE STARBUCKS TRUST                   )
                                      )
                                      )
                                      )
By: /s/ Heather J. Tomlinson          )
   ---------------------------------  )
Name: Heather Tomlinson, Trustee      )



                                      )
                                      )
                                      )
 /s/ Todd Grabois                     )
- ------------------------------------  )
TODD GRABOIS                          )




                                      )
                                      )
                                      )
 /s/ Robert Novak                     )
- ------------------------------------  )
ROBERT NOVAK                          )




                                      )
                                      )
                                      )
 /s/ Prentis B. Tomlinson, Jr.        )
- ------------------------------------  )
PRENTIS B. TOMLINSON, JR.             )


                                       36