EXHIBIT 1



                                  $125,000,000

                         WESTPORT RESOURCES CORPORATION

                    8 1/4% SENIOR SUBORDINATED NOTES DUE 2011


                               PURCHASE AGREEMENT

                                                                  March 27, 2003



LEHMAN BROTHERS INC.
  745 Seventh Avenue
    New York, NY 10019

Dear Sirs:


         1. Introductory. Westport Resources Corporation, a Nevada corporation
(the "COMPANY"), proposes, subject to the terms and conditions stated herein, to
issue and sell to Lehman Brothers Inc. (the "PURCHASER") $125,000,000 principal
amount of its 8 1/4% Senior Subordinated Notes Due 2011 ("OFFERED SECURITIES")
to be issued as additional securities under the indenture dated as of November
5, 2001, by and among the Company, the subsidiary guarantors from time to time
parties thereto (the "SUBSIDIARY GUARANTORS") and The Bank of New York, as
Trustee (the "TRUSTEE") ("the "ORIGINAL INDENTURE"), as supplemented by the
First Supplemental Indenture thereto, dated as of December 31, 2001 (the "FIRST
SUPPLEMENTAL INDENTURE"), the Second Supplemental Indenture thereto, dated as of
December 17, 2002 (the "SECOND SUPPLEMENTAL INDENTURE") and the Third
Supplemental Indenture thereto, to be dated as of April 3, 2003 (the "Third
Supplemental Indenture"). The Original Indenture, as supplemented by the First
Supplemental Indenture, the Second Supplemental Indenture and the Third
Supplemental Indenture, is referred to herein as the "INDENTURE." The Offered
Securities will be guaranteed (the "SUBSIDIARY GUARANTIES") by the Subsidiary
Guarantors. The Securities Act of 1933 is herein referred to as the "SECURITIES
ACT."

         Holders (including subsequent transferees) of the Offered Securities
will have the registration rights set forth in the registration rights agreement
(the "REGISTRATION RIGHTS AGREEMENT"), to be dated the Closing Date (as defined
below), for so long as such Offered Securities constitute "TRANSFER RESTRICTED
SECURITIES" (as defined in the Registration Rights Agreement). Pursuant to the
Registration Rights Agreement, the Company and the Subsidiary Guarantors will
agree to file with the Securities and Exchange Commission (the "COMMISSION")
under the circumstances and upon the terms and subject to the conditions set
forth therein, (i) a registration statement under the Securities Act (the
"EXCHANGE OFFER REGISTRATION STATEMENT") relating to the



                                                                               2


Company's 8 1/4% Senior Subordinated Notes in a like aggregate principal amount
as the Offered Securities, identical in all material respects to the Offered
Securities and registered under the Securities Act (the "EXCHANGE SECURITIES"),
to be offered in exchange for the Offered Securities (such offer to exchange
being referred to as the "EXCHANGE OFFER") and the Subsidiary Guaranties thereof
and, if applicable, (ii) a shelf registration statement pursuant to Rule 415
under the Securities Act (the "SHELF REGISTRATION STATEMENT" and, together with
the Exchange Offer Registration Statement, the "REGISTRATION STATEMENTS")
relating to the resale by certain holders of the Offered Securities and to use
its reasonable best efforts to cause such Registration Statements to be declared
and remain effective and usable for the periods specified in the Registration
Rights Agreement and to consummate the Exchange Offer. The Offered Securities
and the Exchange Securities are referred to collectively as the "SECURITIES."

         The Company and the Subsidiary Guarantors hereby agree with the
Purchaser as follows:

         2. Representations and Warranties of the Company. The Company and the
Subsidiary Guarantors represent and warrant to, and agree with, the Purchaser
that:

                  (a) An offering memorandum relating to the Offered Securities
         to be offered by the Purchaser has been prepared by the Company. Such
         offering memorandum (the "OFFERING MEMORANDUM"), as supplemented as of
         the date of this Agreement, together with any document incorporated by
         reference therein and any other document approved by the Company for
         use in connection with the contemplated resale of the Offered
         Securities are hereinafter collectively referred to as the "OFFERING
         DOCUMENT." On the date of this Agreement the Offering Document does
         not, and on the Closing Date (as defined below) the Offering Document
         will not, include any untrue statement of a material fact or omit to
         state any material fact required to be stated therein or necessary in
         order to make the statements therein, in the light of the circumstances
         under which they were made, not misleading. The preceding sentence does
         not apply to statements in or omissions from the Offering Document
         based upon written information furnished to the Company by the
         Purchaser specifically for use therein, it being understood and agreed
         that the only such information is that described as such in Section
         7(b) hereof. Except as disclosed in the Offering Document, on the date
         of this Agreement, (i) the Company's Annual Report on Form 10-K most
         recently filed with the Securities and Exchange Commission (the
         "COMMISSION") and (ii) all subsequent reports (items (i) and (ii)
         collectively, the "EXCHANGE ACT REPORTS") which have been filed by the
         Company with the Commission or sent to stockholders pursuant to the
         Securities Exchange Act of 1934 (the "EXCHANGE ACT") do not include any
         untrue statement of a material fact or omit to state any material fact
         necessary to make the statements therein, in the light of the
         circumstances under which they were made, not misleading. Such
         documents, when they were filed with the Commission, conformed in all
         material respects to the requirements of the Exchange Act and the rules
         and regulations of the Commission thereunder.



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                  (b) The Company has been duly incorporated and is an existing
         corporation in good standing under the laws of the State of Nevada,
         with power and authority (corporate and other) to own its properties
         and conduct its business as described in the Offering Document; and the
         Company is duly qualified to do business as a foreign corporation in
         good standing in all other jurisdictions in which its ownership or
         lease of property or the conduct of its business requires such
         qualification, except where the failure to be so qualified would not,
         individually or in the aggregate, have a material adverse effect on the
         business condition (financial or otherwise), properties or results of
         operations of the Company and its subsidiaries taken as a whole
         ("MATERIAL ADVERSE EFFECT").

                  (c) Each subsidiary of the Company has been duly incorporated
         or organized and, except Westport Argentina LLC and Westport Overriding
         Royalty LLC, is an existing corporation, limited partnership,
         partnership or limited liability company in good standing, and the
         Company expects that each of Westport Argentina LLC and Westport
         Overriding Royalty LLC will be an existing limited liability company in
         good standing on the Closing Date (as defined below), in each case
         under the laws of the jurisdiction of its incorporation or
         organization, with power and authority (corporate or other) to own its
         properties and conduct its business as described in the Offering
         Document; and each subsidiary of the Company is duly qualified to do
         business as a foreign corporation, limited partnership, partnership or
         limited liability company in good standing in all other jurisdictions
         in which its ownership or lease of property or the conduct of its
         business requires such qualification, except where the failure to be so
         qualified would not, individually or in the aggregate, have a Material
         Adverse Effect; all of the issued and outstanding capital stock or
         similar ownership interest of each subsidiary of the Company has been
         duly authorized and validly issued and is fully paid and nonassessable;
         and the capital stock of each subsidiary that is a corporation owned by
         the Company, directly or through subsidiaries, is owned free from
         liens, encumbrances and defects other than those liens listed in
         Schedule A hereto.

                  (d) For purposes of this agreement, a "subsidiary" of the
         Company shall mean any corporation, partnership, limited liability
         company or other business entity in which the Company owns, directly or
         indirectly, 50% or more of the voting or economic equity interest. A
         list of all subsidiaries of the Company, indicating their respective
         jurisdictions of formation or organization, the Company's direct or
         indirect ownership therein and whether they are Subsidiary Guarantors
         is attached as Schedule B.

                  (e) The Indenture has been duly authorized; the Offered
         Securities have been duly authorized; and when the Offered Securities
         are delivered and paid for pursuant to this Agreement on the Closing
         Date (as defined below), the Indenture will have been duly executed and
         delivered by the Company and the Subsidiary Guarantors, such Offered
         Securities will have been duly executed, authenticated, issued and
         delivered and will conform to the description thereof contained in the
         Offering Document and the Indenture and such Offered Securities will
         constitute



                                                                               4


         valid and legally binding obligations of the Company and the Subsidiary
         Guarantors, enforceable in accordance with their terms, subject to
         bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium
         and similar laws of general applicability relating to or affecting
         creditors' rights and to general equity principles.

                  (f) The Indenture is duly qualified under the Trust Indenture
         Act of 1939, as amended (the "TIA" or "TRUST INDENTURE ACT").

                  (g) Except as disclosed in the Offering Document, there are no
         contracts, agreements or understandings between the Company and any
         person that would give rise to a valid claim against the Company or the
         Purchaser for a brokerage commission, finder's fee or other like
         payment in connection with this offering.

                  (h) No consent, approval, authorization, or order of, or
         filing with, any governmental agency or body or any court is required
         under any of the "INCLUDED LAWS" (as defined in the opinion of Akin,
         Gump, Strauss, Hauer & Feld, L.L.P. delivered pursuant to Section 6(d)
         of this Agreement) for the consummation of the transactions
         contemplated by this Agreement and the Registration Rights Agreement in
         connection with the issuance and sale of the Offered Securities by the
         Company and the Subsidiary Guarantors, except such as have been
         obtained or made under the Securities Act or the Trust Indenture Act
         and such as may be required under state securities laws and except for
         the orders of the Commission declaring the Exchange Offer Registration
         Statement or the Shelf Registration Statement effective.

                  (i) The execution, delivery and performance by the Company and
         the Subsidiary Guarantors of the Indenture, this Agreement and the
         Registration Rights Agreement, and the issuance and sale of the Offered
         Securities and compliance with the terms and provisions thereof do not
         and will not, (i) result in a violation of any law, rule or regulation
         of any Included Law, (ii) result in a violation of any order, writ,
         judgment or decree known to the Company and applicable to the Company
         or any subsidiary of the Company or any of their properties, (iii)
         result in a violation of the Articles of Incorporation or by-laws or
         similar charter documents of the Company or of any subsidiary of the
         Company, or (iv) breach or result in a default or result in the
         acceleration of, or entitle any party to accelerate under any agreement
         or instrument to which the Company or any subsidiary of the Company is
         a party or by which the Company or any such subsidiary is bound or to
         which any of the properties of the Company or any such subsidiary is
         subject, except in the case of clauses (i), (ii) and (iv) for such
         breaches, violations or defaults under as would not, individually or in
         the aggregate, have a Material Adverse Effect.

                  (j) This Agreement has been duly authorized, executed and
         delivered by the Company and the Subsidiary Guarantors.



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                  (k) Except as disclosed in the Offering Document, the Company
         and its subsidiaries have good and valid title to all real properties
         and all other properties and assets owned by them, in each case free
         from liens, encumbrances and defects that would materially affect the
         value thereof or materially interfere with the use made or to be made
         thereof by them; and except as disclosed in the Offering Document, the
         Company and its subsidiaries hold any leased real or personal property
         under valid and enforceable leases with no exceptions that would
         materially interfere with the use made or to be made thereof by them.

                  (l) The Company and its subsidiaries possess adequate
         certificates, authorities or permits issued by appropriate governmental
         agencies or bodies necessary to conduct the business now operated by
         them in any material respect and have not received any notice of
         proceedings relating to the revocation or modification of any such
         certificate, authority or permit that, if determined adversely to the
         Company or any of its subsidiaries, would individually or in the
         aggregate have a Material Adverse Effect.

                  (m) Except as disclosed in the Offering Document, no labor
         dispute with the employees of the Company or any subsidiary exists or,
         to the knowledge of the Company, is imminent that is reasonably likely
         to have a Material Adverse Effect.

                  (n) The Company and its subsidiaries own or possess licenses
         or other enforceable legal rights to use or can acquire on reasonable
         terms, adequate trademarks, trade names and other rights to inventions,
         know-how, patents, copyrights, confidential information and other
         intellectual property (collectively, "INTELLECTUAL PROPERTY RIGHTS")
         necessary to conduct the business now operated by them in any material
         respect, or presently employed by them, and have not received any
         notice of infringement of or conflict with asserted rights of others
         with respect to any intellectual property rights that, if determined
         adversely to the Company or any of its subsidiaries, would individually
         or in the aggregate have a Material Adverse Effect.

                  (o) Except as disclosed in the Offering Document, neither the
         Company nor any of its subsidiaries is in violation of any statute, any
         rule, regulation, decision or order of any governmental agency or body
         or any court, domestic or foreign, relating to the use, disposal or
         release of hazardous or toxic substances or relating to the protection
         or restoration of the environment or human exposure to hazardous or
         toxic substances (collectively, "ENVIRONMENTAL LAWS"), owns or operates
         any real property contaminated with any substance that is subject to
         any environmental laws, is liable for any off-site disposal or
         contamination pursuant to any environmental laws, or is subject to any
         claim relating to any environmental laws, which violation,
         contamination, liability or claim would individually or in the
         aggregate have a Material Adverse Effect; and the Company is not aware
         of any pending investigation which might lead to such a claim.



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                  (p) Except as disclosed in the Offering Document, there are no
         pending actions, suits or proceedings against or affecting the Company,
         any of its subsidiaries or any of their respective properties that, if
         determined adversely to the Company or any of its subsidiaries, would
         individually or in the aggregate have a Material Adverse Effect, or
         would materially and adversely affect the ability of the Company or the
         Subsidiary Guarantors to perform their respective obligations under the
         Indenture, this Agreement or the Registration Rights Agreement, or
         which are otherwise material in the context of the sale of the Offered
         Securities; and no such actions, suits or proceedings are, to the
         Company's knowledge, threatened or contemplated.

                  (q) The financial statements incorporated by reference in the
         Offering Document present fairly, in all material respects, the
         financial position of the Company and its consolidated subsidiaries as
         of the dates shown and their results of operations and cash flows for
         the periods shown, and, except as otherwise disclosed in the Offering
         Document, such financial statements have been prepared in conformity
         with the generally accepted accounting principles in the United States
         applied on a consistent basis; and the assumptions used in preparing
         the pro forma financial statements included in the Offering Document
         provide a reasonable basis for presenting the significant effects
         directly attributable to the transactions or events described therein,
         the related pro forma adjustments give appropriate effect to those
         assumptions, and the pro forma columns therein reflect the proper
         application of those adjustments to the corresponding historical
         financial statement amounts.

                  (r) Except as disclosed in the Offering Document, since the
         date of the latest audited financial statements incorporated by
         reference in the Offering Document there has been no material adverse
         change, nor any development or event involving a prospective material
         adverse change, in the condition (financial or other), business,
         properties or results of operations of the Company and its subsidiaries
         taken as a whole, and, except as disclosed in or contemplated by the
         Offering Document, there has been no dividend or distribution of any
         kind declared, paid or made by the Company on any class of its capital
         stock.

                  (s) Neither the Company nor any Subsidiary Guarantor is an
         open-end investment company, unit investment trust or face-amount
         certificate company that is or is required to be registered under
         Section 8 of the United States Investment Company Act of 1940 (the
         "INVESTMENT COMPANY ACT"); and neither the Company nor any Subsidiary
         Guarantor is, and after giving effect to the offering and sale of the
         Offered Securities and the application of the proceeds thereof as
         described in the Offering Document neither will be, an "investment
         company" as defined in the Investment Company Act.

                  (t) No securities of the same class (within the meaning of
         Rule 144A(d)(3) under the Securities Act) as the Offered Securities are
         listed on any national securities exchange registered under Section 6
         of the Exchange Act or quoted in a U.S. automated inter-dealer
         quotation system.



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                  (u) Assuming the accuracy of the representations and
         warranties of the Purchaser set forth in Section 4 hereof, and the
         performance by the Purchaser of the agreements made herein, the offer
         and sale of the Offered Securities and the Subsidiary Guaranties and
         the initial resale of the Offered Securities by the Purchaser in the
         manner contemplated by this Agreement and the Offering Document will be
         exempt from the registration requirements of the Securities Act by
         reason of Section 4(2) thereof and Regulation S thereunder ("REGULATION
         S"); and it is not necessary to qualify an indenture in respect of the
         Offered Securities under the Trust Indenture Act.

                  (v) Neither the Company, nor any of its affiliates (as such
         term is defined in Rule 144 under the Securities Act, an "AFFILIATE"),
         nor any person acting on its or their behalf (other than the Purchaser,
         as to whom the Company and the Subsidiary Guarantors make no
         representation) (i) has, within the six-month period prior to the date
         hereof, offered or sold in the United States or to any U.S. person (as
         such terms are defined in Regulation S under the Securities Act) the
         Offered Securities or any security of the same class or series as the
         Offered Securities or (ii) has offered or will offer or sell the
         Offered Securities (A) in the United States by means of any form of
         general solicitation or general advertising within the meaning of Rule
         502(c) under the Securities Act or (B) with respect to any such
         securities sold in reliance on Rule 903 of Regulation S under the
         Securities Act, by means of any directed selling efforts within the
         meaning of Rule 902(c) of Regulation S. The Company, its Affiliates and
         any person acting on its or their behalf (other than the Purchaser, as
         to whom the Company and the Subsidiary Guarantors make no
         representation) have complied and will comply with the offering
         restrictions requirement of Regulation S. The Company has not entered
         and will not enter into any contractual arrangement with respect to the
         distribution of the Offered Securities except for this Agreement.

                  (w) On the Closing Date (as defined below), the Exchange
         Securities and the Subsidiary Guaranty set forth in the Indenture will
         have been duly authorized by the Company and the Subsidiary Guarantors;
         and when the Exchange Securities are issued, executed and authenticated
         in accordance with the terms of the Exchange Offer and the Indenture
         (i) the Exchange Securities will be entitled to the benefits of the
         Indenture including the Subsidiary Guaranty set forth in the Indenture,
         (ii) the Exchange Securities will be the valid and legally binding
         obligations of the Company, enforceable in accordance with their terms,
         and (iii) the Subsidiary Guaranty set forth in the Indenture will be
         the valid and binding obligation of each Subsidiary Guarantor and in
         the case of clauses (ii) and (iii) subject to bankruptcy, insolvency,
         fraudulent transfer, reorganization, moratorium and similar laws of
         general applicability relating to or affecting creditors' rights and to
         general equity principles.

                  (x) The Subsidiary Guaranty set forth in the Indenture has
         been duly authorized by each Subsidiary Guarantor; and, when issued,
         will have been duly executed and delivered by each such Subsidiary
         Guarantor and will conform to the description thereof contained in the
         Offering Document. When the Offered



                                                                               8


         Securities have been issued, executed and authenticated in accordance
         with the Indenture and delivered to and paid for by the Purchaser in
         accordance with the terms of this Agreement, the Subsidiary Guaranty of
         each Subsidiary Guarantor set forth in the Indenture will constitute
         valid and legally binding obligations of such Subsidiary Guarantor,
         enforceable in accordance with its terms, subject to bankruptcy,
         insolvency, fraudulent transfer, reorganization, moratorium and similar
         laws of general applicability relating to or affecting creditors'
         rights and to general equity principles.

                  (y) The Registration Rights Agreement has been duly authorized
         by the Company and each of the Subsidiary Guarantors and, on the
         Closing Date (as defined below), will have been duly executed and
         delivered by the Company and each of the Subsidiary Guarantors. When
         the Registration Rights Agreement has been duly executed and delivered,
         the Registration Rights Agreement will be a valid and binding agreement
         of the Company and each of the Subsidiary Guarantors, enforceable
         against the Company and each Subsidiary Guarantor in accordance with
         its terms, subject to bankruptcy, insolvency, fraudulent transfer,
         reorganization, moratorium and similar laws of general applicability
         relating to or affecting creditors' rights and to general equity
         principles. On the Closing Date (as defined below), the Registration
         Rights Agreement will conform as to legal matters to the description
         thereof in the Offering Memorandum.

                  (z) Neither the Company nor any of its subsidiaries is (i) in
         violation of its respective charter or by-laws or similar
         organizational documents or (ii) in default in the performance of any
         obligation, agreement, covenant or condition contained in any
         indenture, loan agreement, mortgage, lease or other agreement or
         instrument that is material to the Company and its subsidiaries, taken
         as a whole, to which the Company or any of its subsidiaries is a party
         or by which the Company or any of its subsidiaries or their respective
         properties are bound, except in the case of item (ii), where such
         default would not, individually or in the aggregate, have a Material
         Adverse Effect.

                  (aa) Except as disclosed in the Offering Document, there are
         no contracts, agreements or understandings between the Company or any
         Subsidiary Guarantor and any person granting such person the right to
         require the Company or such Subsidiary Guarantor to file a registration
         statement under the Securities Act with respect to any securities of
         the Company or such Subsidiary Guarantor or to require the Company or
         such Subsidiary Guarantor to include such securities with the
         Securities and Subsidiary Guaranties registered pursuant to any
         Registration Statement.

                  (bb) Neither the Company nor any of its subsidiaries nor any
         agent thereof acting on the behalf of them has taken, and none of them
         will take, any action that might cause this Agreement or the issuance
         or sale of the Offered Securities to violate Regulation T, Regulation U
         or Regulation X of the Board of Governors of the Federal Reserve
         System.



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                  (cc) No "nationally recognized statistical rating
         organization" as such term is defined for purposes of Rule 436(g)(2)
         under the Securities Act (i) has imposed (or has informed the Company
         or any Subsidiary Guarantor that it is considering imposing) any
         condition (financial or otherwise) on the Company's or any Subsidiary
         Guarantor's retaining any rating assigned to the Company or any
         Subsidiary Guarantor or any securities of the Company or any Subsidiary
         Guarantor or (ii) has indicated to the Company or any Subsidiary
         Guarantor that it is considering (a) the downgrading, suspension, or
         withdrawal of, or any review for a possible change that does not
         indicate the direction of the possible change in, any rating so
         assigned or (b) any change in the outlook for any rating of the
         Company, any Subsidiary Guarantor or any securities of the Company or
         any Subsidiary Guarantor.

                  (dd) No form of general solicitation or general advertising
         (as defined in Regulation D under the Securities Act) was used by the
         Company, the Subsidiary Guarantors or any of their respective
         representatives (other than the Purchaser, as to whom the Company and
         the Subsidiary Guarantors make no representation) in connection with
         the offer and sale of the Offered Securities contemplated hereby,
         including, but not limited to, articles, notices or other
         communications published in any newspaper, magazine, or similar medium
         or broadcast over television or radio, or any seminar or meeting whose
         attendees have been invited by any general solicitation or general
         advertising.

                  (ee) The Offered Securities offered by the Company and sold by
         the Company in reliance on Regulation S have been offered and will be
         offered and sold only in offshore transactions.

                  (ff) The sale of the Offered Securities by the Company
         pursuant to Regulation S is not part of a plan or scheme to evade the
         registration provisions of the Securities Act.

                  (gg) On the Closing Date (as defined below), the Indenture
         will conform in all material respects to the requirements of the Trust
         Indenture Act, and the rules and regulations of the Commission
         applicable to an indenture which is qualified thereunder.

                  (hh) The Company is subject to Section 13 or 15(d) of the
         Exchange Act.

         3. Purchase, Sale and Delivery of Offered Securities. On the basis of
the representations, warranties and agreements herein contained, but subject to
the terms and conditions herein set forth, the Company agrees to sell to the
Purchaser, and the Purchaser agrees to purchase from the Company, at a purchase
price of 105.5% of the principal amount thereof plus accrued interest from
November 1, 2002 to the Closing Date (as defined below), the aggregate principal
amount of Offered Securities.

         The Company will deliver against payment of the purchase price the
Offered Securities in the form of one or more permanent global securities in
definitive form (the



                                                                              10


"GLOBAL SECURITIES") deposited with the Trustee as custodian for The Depository
Trust Company ("DTC") and registered in the name of Cede & Co., as nominee for
DTC. Interests in any permanent Global Securities will be held only in
book-entry form through DTC, except in the limited circumstances described in
the Offering Document. Payment for the Offered Securities shall be made by the
Purchaser in Federal (same day) funds by wire transfer to an account specified
by the Company at a bank designated by the Company and reasonably acceptable to
the Purchaser at the office of Cravath, Swaine & Moore at 10 A.M. (New York
time), on April 3, 2003, or at such other time not later than seven full
business days thereafter as the Purchaser and the Company mutually determine,
such time being herein referred to as the "CLOSING DATE," against delivery to
the Trustee as custodian for DTC of the Global Securities representing all of
the Offered Securities. The Global Securities will be made available for
checking at the above office of Cravath, Swaine & Moore at least 24 hours prior
to the Closing Date.

         4. Representations by Purchaser; Resale by Purchaser. (a) The Purchaser
represents and warrants to the Company and the Subsidiary Guarantors that it is
an "accredited investor" within the meaning of Regulation D under the Securities
Act and a "qualified institutional buyer" within the meaning of Rule 144A of the
Securities Act.

                  (b) The Purchaser acknowledges that the Offered Securities
         have not been registered under the Securities Act and may not be
         offered or sold within the United States or to, or for the account or
         benefit of, U.S. persons except in accordance with Regulation S or
         pursuant to an exemption from the registration requirements of the
         Securities Act. The Purchaser represents and agrees that it has offered
         and sold the Offered Securities, and will offer and sell the Offered
         Securities (i) as part of its distribution at any time and (ii)
         otherwise until 40 days after the later of the commencement of the
         offering and the Closing Date, only in accordance with Rule 903 or Rule
         144A under the Securities Act ("RULE 144A"). Accordingly, neither the
         Purchaser nor its Affiliates, nor any persons acting on its or their
         behalf, have engaged or will engage in any directed selling efforts
         with respect to the Offered Securities, and the Purchaser, its
         Affiliates and all persons acting on its or their behalf have complied
         and will comply with the offering restrictions requirement of
         Regulation S. The Purchaser agrees that, at or prior to confirmation of
         sale of the Offered Securities, other than a sale pursuant to Rule
         144A, the Purchaser will have sent to each distributor, dealer or
         person receiving a selling concession, fee or other remuneration that
         purchases the Offered Securities from it during the restricted period a
         confirmation or notice to substantially the following effect:

                  "The Securities covered hereby have not been registered under
                  the U.S. Securities Act of 1933 (the "Securities Act") and may
                  not be offered or sold within the United States or to, or for
                  the account or benefit of, U.S. persons (i) as part of their
                  distribution at any time or (ii) otherwise until 40 days after
                  the later of the date of the commencement of the offering and
                  the closing date, except in either case in accordance with
                  Regulation S (or Rule 144A if available)



                                                                              11


                  under the Securities Act. Terms used above have the meanings
                  given to them by Regulation S."

         Other than the term "Affiliate" terms used in this subsection (b) have
the meanings given to them by Regulation S.

                  (c) The Purchaser agrees that it and each of its Affiliates
         has not entered and will not enter into any contractual arrangement
         with respect to the distribution of the Offered Securities except with
         the prior written consent of the Company.

                  (d) The Purchaser agrees that it and each of its Affiliates
         will not offer or sell the Offered Securities in the United States by
         means of any form of general solicitation or general advertising within
         the meaning of Rule 502(c) under the Securities Act, including, but not
         limited to (i) any advertisement, article, notice or other
         communication published in any newspaper, magazine or similar media or
         broadcast over television or radio, or (ii) any seminar or meeting
         whose attendees have been invited by any general solicitation or
         general advertising. The Purchaser agrees, with respect to resales made
         in reliance on Rule 144A of any of the Offered Securities, to deliver
         either with the confirmation of such resale or otherwise prior to
         settlement of such resale a notice to the effect that the resale of
         such Offered Securities has been made in reliance upon the exemption
         from the registration requirements of the Securities Act provided by
         Rule 144A.

                  (e) The Purchaser represents and agrees that (i) it has not
         offered or sold and prior to the date six months after the date of
         issue of the Offered Securities will not offer or sell any Offered
         Securities to persons in the United Kingdom except to persons whose
         ordinary activities involve them in acquiring, holding, managing or
         disposing of investments (as principal or agent) for the purposes of
         their businesses or otherwise in circumstances which have not resulted
         and will not result in an offer to the public in the United Kingdom
         within the meaning of the Public Offers of Securities Regulations 1995;
         (ii) it has only communicated or caused to be communicated and will
         only communicate or cause to be communicated any invitation or
         inducement to engage in investment activity (within the meaning of
         Section 21 of the Financial Services and Markets Act 2000 (the "FSMA"))
         received by it in connection with the issue or sale of any Offered
         Securities in circumstances in which Section 21(1) of the FSMA does not
         apply to the Issuer or any Guarantor; and (iii) it has complied and
         will comply with all applicable provisions of the FSMA with respect to
         anything done by it in relation to the Offered Securities in, from or
         otherwise involving the United Kingdom.

         5. Certain Agreements of the Company. The Company agrees with the
Purchaser that:

                  (a) The Company will advise the Purchaser promptly of any
         proposal to amend or supplement the Offering Document and will not
         effect such amendment or supplementation without the Purchaser's
         consent, which shall not be unreasonably withheld or delayed. If, at
         any time prior to the completion of the



                                                                              12


         resale of the Offered Securities by the Purchaser, any event occurs as
         a result of which the Offering Document as then amended or supplemented
         would include an untrue statement of a material fact or omit to state
         any material fact necessary in order to make the statements therein, in
         the light of the circumstances under which they were made, or if is
         necessary at any such time to amend or supplement the Offering Document
         to comply with any applicable law, not misleading, the Company promptly
         will notify the Purchaser of such event and promptly will prepare, at
         its own expense, an amendment or supplement which will correct such
         statement or omission or to effect such compliance. Neither the
         Purchaser's consent to, nor the Purchaser's delivery to offerees or
         investors of, any such amendment or supplement shall constitute a
         waiver of any of the conditions set forth in Section 6.

                  (b) The Company will furnish to the Purchaser copies of the
         Offering Document and all amendments and supplements to such documents,
         in each case as soon as available and in such quantities as the
         Purchaser requests, and the Company will furnish to the Purchaser on
         the date hereof three copies of the Offering Document signed by a duly
         authorized officer of the Company. At any time when the Company is not
         subject to Section 13 or 15(d) of the Exchange Act, the Company will
         promptly furnish or cause to be furnished to the Purchaser and, upon
         request of holders and prospective purchasers of the Offered
         Securities, to such holders and purchasers, copies of the information
         required to be delivered to holders and prospective purchasers of the
         Offered Securities pursuant to Rule 144A(d)(4) under the Securities Act
         (or any successor provision thereto) in order to permit compliance with
         Rule 144A in connection with resales by such holders of the Offered
         Securities. The Company will pay the expenses of printing and
         distributing to the Purchaser all such documents.

                  (c) The Company will arrange for the qualification of the
         Offered Securities for sale and the determination of their eligibility
         for investment under the laws of such jurisdictions in the United
         States and Canada as the Purchaser designates and will continue such
         qualifications in effect so long as required for the resale of the
         Offered Securities by the Purchaser, provided that the Company will not
         be required to qualify as a foreign corporation or to file a general
         consent to service of process in any such jurisdiction.

                  (d) During the period of five years hereafter, the Company
         will furnish to the Purchaser, as soon as practicable after the end of
         each fiscal year, a copy of its annual report to stockholders for such
         year; and the Company will furnish to the Purchaser (i) as soon as
         available, a copy of each report and any definitive proxy statement of
         the Company filed with the Commission under the Exchange Act or mailed
         to stockholders, and (ii) from time to time, such other information
         concerning the Company as the Purchaser may reasonably request, which
         such other information shall be kept confidential by the Purchaser to
         the extent so requested by the Company in writing at the time of
         delivery of such information.



                                                                              13


                  (e) During the period of two years after the Closing Date, the
         Company will, upon request, furnish to the Purchaser and any holder of
         Offered Securities a copy of the restrictions on transfer applicable to
         the Offered Securities.

                  (f) During the period of two years after the Closing Date, the
         Company will not, and will not permit any of its Affiliates to, resell
         any of the Offered Securities that have been reacquired by any of them.

                  (g) During the period of two years after the Closing Date,
         neither the Company nor any Subsidiary Guarantor will be or become, an
         open-end investment company, unit investment trust or face-amount
         certificate company that is or is required to be registered under
         Section 8 of the Investment Company Act.

                  (h) The Company will pay all expenses incidental to the
         performance of its obligations under this Agreement, the Indenture, and
         the Registration Rights Agreement, including (i) the fees and expenses
         of the Trustee and its professional advisers; (ii) all expenses in
         connection with the execution, issue, authentication, packaging and
         initial delivery of the Offered Securities and, as applicable, the
         Exchange Securities, the preparation and printing of this Agreement,
         the Registration Rights Agreement, the Offered Securities, the
         Indenture, the Offering Document and amendments and supplements
         thereto, and any other document relating to the issuance, offer, sale
         and delivery of the Offered Securities and as applicable, the Exchange
         Securities; (iii) the cost of listing the Offered Securities and
         qualifying the Offered Securities for trading in The Portal(SM) Market
         ("PORTAL") and any expenses incidental thereto; (iv) the cost of any
         advertising approved by the Company in connection with the issue of the
         Offered Securities; (v) for any expenses (including fees and
         disbursements of counsel) incurred in connection with qualification of
         the Offered Securities or the Exchange Securities for sale under the
         laws of such jurisdictions in the United States and Canada as the
         Purchaser designates and the printing of memoranda relating thereto;
         (vi) for any fees charged by investment rating agencies for the rating
         of the Securities or the Exchange Securities; and (vii) for expenses
         incurred in distributing the Offering Document (including any
         amendments and supplements thereto) to the Purchaser.

                  (i) In connection with the offering, until the Purchaser shall
         have notified the Company of the completion of the resale of the
         Offered Securities, neither the Company nor any of its Affiliates has
         or will, either alone or with one or more other persons, bid for or
         purchase for any account in which it or any of its Affiliates has a
         beneficial interest any Offered Securities or attempt to induce any
         person to purchase any Offered Securities; and neither it nor any of
         its Affiliates will make bids or purchases for the purpose of creating
         actual, or apparent, active trading in, or of raising the price of, the
         Offered Securities.

                  (j) For a period of 90 days after the date of the initial
         offering of the Offered Securities by the Purchaser, the Company will
         not offer, sell, contract to



                                                                              14


         sell, pledge or otherwise dispose of, directly or indirectly, any
         United States dollar-denominated debt securities issued or guaranteed
         by the Company and having a maturity of more than one year from the
         date of issue. The Company will not at any time offer, sell, contract
         to sell, pledge or otherwise dispose of, directly or indirectly, any
         securities under circumstances where such offer, sale, pledge, contract
         or disposition would cause the exemption afforded by Section 4(2) of
         the Securities Act or the safe harbor of Regulation S thereunder to
         cease to be applicable to the offer and sale of the Offered Securities.

                  (k) As soon as practicable after the Closing Date, the Company
         will use its best efforts to provide the Purchaser with evidence
         reasonably satisfactory to the Purchaser that each of Westport
         Argentina LLC and Westport Overriding Royalty LLC is an existing
         limited liability company in good standing under the laws of the State
         of Colorado.

         6. Conditions of the Obligations of the Purchaser. The obligations of
the Purchaser to purchase and pay for the Offered Securities will be subject to
the accuracy of the representations and warranties on the part of the Company
herein on the date hereof and on the Closing Date, to the accuracy of the
statements of officers of the Company made pursuant to the provisions hereof, to
the performance by the Company and the Subsidiary Guarantors of their respective
obligations hereunder and to the following additional conditions precedent:

                  (a) The Purchaser shall have received a letter, dated the date
         of this Agreement, of KPMG LLP confirming that they are independent
         public accountants with respect to the Company under rule 101 of the
         AICPA's Code of Professional Conduct, and its interpretations and
         rulings, and to the effect that:

                           (i) on the basis of a reading of the latest available
                  interim financial statements of the Company, inquiries of
                  officials of the Company who have responsibility for financial
                  and accounting matters and other specified procedures, nothing
                  came to their attention that caused them to believe that:

                                    (A) at the date of the latest available
                           balance sheet read by such accountants, or at a
                           subsequent specified date not more than three
                           business days prior to the date of this Agreement,
                           there was any change in the capital stock or any
                           increase in long-term debt of the Company and its
                           consolidated subsidiaries or, at the date of the
                           latest available balance sheet read by such
                           accountants, there was any decreases in consolidated
                           net current revenues or in the total or per-share
                           amounts of income before extraordinary items or of
                           net income, as compared with amounts shown on the
                           latest balance sheet incorporated by reference in the
                           Offering Document; or

                                    (B) for the period from the closing date of
                           the latest income statement incorporated by reference
                           in the Offering Document to



                                                                              15


                           the closing date of the latest available income
                           statement read by such accountants there were any
                           decreases, as compared with the corresponding period
                           of the previous year, in consolidated net sales, net
                           operating income, consolidated net income or in the
                           ratio of earnings to fixed charges;

                  except in all cases set forth in clauses (A) and (B) above for
                  changes, increases or decreases which the Offering Document
                  discloses have occurred or may occur or which are described in
                  such letter;

                           (ii) they have compared specified dollar amounts (or
                  percentages derived from such dollar amounts) and other
                  financial information contained and incorporated by reference
                  in the Offering Document and the Exchange Act Reports (in each
                  case to the extent that such dollar amounts, percentages and
                  other financial information are derived from the general
                  accounting records of the Company and its subsidiaries subject
                  to the internal controls of the Company's accounting system or
                  are derived directly from such records by analysis or
                  computation) with the results obtained from inquiries, a
                  reading of such general accounting records and other
                  procedures specified in such letter and have found such dollar
                  amounts, percentages and other financial information to be in
                  agreement with such results, except as otherwise specified in
                  such letter; and

                           (iii) on the basis of a reading of the pro forma
                  consolidated financial statements incorporated by reference in
                  the Offering Document, carrying out certain specified
                  procedures, reading of minutes, inquiries of certain officials
                  of the Company who have responsibility for financial and
                  accounting matters and proving the arithmetic accuracy of the
                  application of the pro forma adjustments to the historical
                  amounts in the pro forma consolidated financial statements,
                  nothing came to their attention which caused them to believe
                  that the pro forma consolidated financial statements do not
                  comply as to form in all material respects with the applicable
                  accounting requirements of Rule 11-02 of Regulation S-X under
                  the Securities Act or that the pro forma adjustments have not
                  been properly applied to the historical amounts in the
                  compilations of such statements or on the pro forma basis
                  described in the notes thereto, except that the applicable
                  accounting requirements of Rule 11-02 of Regulations S-X
                  preclude the presentation of the pro forma adjustments related
                  to the offering of the Securities and the application of the
                  estimated net proceeds from the offering of the Securities.

                  (b) The Purchaser shall have received a letter, dated the date
         of this Agreement, from Lon McCain, the Chief Financial Officer of the
         Company, to the effect that:



                                                                              16


                           (i) he and members of his staff are responsible for
                  the Company's financial and accounting matters and have
                  examined the Company's financial records and schedules
                  included in the Offering Document;

                           (ii) on the basis of the review referred to in clause
                  (i) above, nothing came to his attention that caused him to
                  believe that the consolidated balance sheets of the Company
                  and its subsidiaries as of December 31, 2000 and 2001, and the
                  consolidated statements of operations, stockholders' equity,
                  and cash flows for each of the two years in the period ended
                  December 31, 2001, and the related financial statement
                  schedules all incorporated by reference in the Offering
                  Document, do not fairly present the financial position of the
                  Company and its subsidiaries as of December 31, 2000 and 2001
                  and the results of their operations and cash flows for each of
                  the two years in the period ended December 31, 2001 in
                  conformity with generally accepted accounting principles; and

                           (iii) he has compared specified dollar amounts (or
                  percentages derived from such dollar amounts) and other
                  financial information contained and incorporated by reference
                  in the Offering Document and the Exchange Act Reports with the
                  results obtained from a reading of the general accounting
                  records of the Company and its subsidiaries and other
                  procedures specified in such letter and have found such dollar
                  amounts, percentages and other financial information to be in
                  agreement with such results, except as otherwise specified in
                  such letter.

                  (c) Subsequent to the execution and delivery of this
         Agreement, there shall not have occurred (i) any change, or any
         development or event involving a prospective change, in the condition
         (financial or other), business, properties or results of operations of
         the Company and its subsidiaries taken as one enterprise which, in the
         reasonable judgment of the Purchaser is material and adverse and makes
         it impractical or inadvisable to proceed with completion of the public
         offering or the sale of and payment for the Offered Securities; (ii)
         any downgrading in the rating of any debt securities or preferred stock
         of the Company by any "nationally recognized statistical rating
         organization" (as defined for purposes of Rule 436(g) under the Act),
         or any public announcement that any such organization has under
         surveillance or review its rating of any debt securities or preferred
         stock of the Company (other than an announcement with positive
         implications of a possible upgrading, and no implication of a possible
         downgrading, of such rating) or any announcement that the Company has
         been placed on negative outlook; (iii) any change in U.S. or
         international financial, political or economic conditions or currency
         exchange rates or exchange controls as would, in the reasonable
         judgment of the Purchaser, be likely to prejudice materially the
         success of the proposed issue, sale or distribution of the Offered
         Securities, whether in the primary market or in respect of dealings in
         the secondary market; (iv) any material suspension or material
         limitation of trading in securities generally on the New York Stock
         Exchange, or any setting of minimum



                                                                              17


         prices for trading on such exchange, or any suspension of trading of
         any securities of the Company on any exchange or in the
         over-the-counter market; (v) any banking moratorium declared by U.S.
         Federal or, New York authorities; (vi) any major disruption of
         settlements of securities or (vii) any attack on, outbreak or material
         escalation of hostilities or acts of terrorism involving the United
         States, any declaration of war by Congress or any other national or
         international calamity or emergency if, in the reasonable judgment of
         the Purchaser, the effect of any such attack, outbreak, escalation,
         act, declaration, calamity or emergency makes it impractical or
         inadvisable to proceed with completion of the public offering or the
         sale of and payment for the Offered Securities.

                  (d) The Purchaser shall have received an opinion, dated the
         Closing Date, of Akin, Gump Strauss, Hauer & Feld, L.L.P., counsel for
         the Company and the Subsidiary Guarantors, and from local counsel in
         Nevada, Colorado and Wyoming to the collective effect that:

                           (i) The Company is a validly existing corporation in
                  good standing under the laws of the State of Nevada and each
                  Subsidiary Guarantor is a validly existing corporation,
                  limited partnership, partnership or limited liability company
                  in good standing under the laws of the state of its
                  incorporation or organization, in each case with corporate,
                  limited partnership, partnership or limited liability company
                  power and authority to own its properties and conduct its
                  business as described in the Offering Document and the
                  Exchange Act Reports, and each is duly qualified to do
                  business as a foreign entity in good standing in the
                  jurisdictions identified in a schedule to the opinion;

                           (ii) Except for those liens listed in Schedule A
                  hereto, all outstanding shares of capital stock or similar
                  ownership interest of the Subsidiary Guarantors are owned of
                  record by the Company either directly or through wholly-owned
                  subsidiaries;

                           (iii) Each of this Agreement, the Registration Rights
                  Agreement and the Indenture has been duly authorized, executed
                  and delivered by the Company and each Subsidiary Guarantor a
                  party thereto; and each of the Registration Rights Agreement
                  and the Indenture constitutes a valid and legally binding
                  obligation of the Company and the Subsidiary Guarantors,
                  enforceable in accordance with its terms, subject to
                  bankruptcy, insolvency, fraudulent transfer, reorganization,
                  moratorium and similar laws of general applicability relating
                  to or affecting creditors' rights and to general equity
                  principles;

                           (iv) The Offered Securities have been duly
                  authorized, executed, issued and delivered and, assuming due
                  authentication, in accordance with this Agreement constitute
                  valid and binding obligations of the Company, enforceable
                  against the Company in accordance with their terms, and
                  entitled to the benefits of the Indenture, subject to
                  bankruptcy, insolvency,



                                                                              18


                  fraudulent transfer, reorganization, moratorium and similar
                  laws of general applicability relating to or affecting
                  creditors' rights and to general equity principles; and the
                  Offered Securities are in the form contemplated by the
                  Indenture and conform in all material respects to the
                  description thereof in the Offering Document;

                           (v) No consent, approval, authorization or order of,
                  or filing with, any governmental agency or body or any court
                  is required under any of the Included Laws to be obtained or
                  made by the Company or the Subsidiary Guarantors for the due
                  execution and delivery of this Agreement, the Indenture or the
                  Registration Rights Agreement and the performance of their
                  respective obligations hereunder or thereunder in connection
                  with the issuance and sale of the Offered Securities by the
                  Company, except such as have been obtained or made and such as
                  may be required under state securities laws, the Securities
                  Act, the Exchange Act, the Trust Indenture Act in connection
                  with the issuance of the Exchange Securities or the various
                  rules and regulations under each of the foregoing;

                           (vi) The execution, delivery and performance by the
                  Company and the Subsidiary Guarantors of the Indenture, this
                  Agreement and the Registration Rights Agreement, and the
                  issuance and sale of the Offered Securities to the Purchaser
                  in the manner contemplated herein and compliance with the
                  terms and provisions thereof did not and will not, (1) result
                  in a violation of any law, rule or regulation of any Included
                  Law, (2) result in a violation of any order, writ, judgment or
                  decree known to such counsel and applicable to the Company or
                  any subsidiary of the Company or any of their properties, (3)
                  result in a violation of the Articles of Incorporation or
                  by-laws or similar charter documents of the Company or of any
                  Subsidiary Guarantor, or (4) breach or result in a default
                  under or result in the acceleration of or entitle any party to
                  accelerate under any agreement or instrument filed as an
                  exhibit to the Exchange Act Reports, except in the case of
                  clauses (1), (2) and (4) for such violations, breaches,
                  defaults and accelerations as would not, individually or in
                  the aggregate, have a Material Adverse Effect;

                           (vii) The descriptions (A) in the Offering Document
                  under the captions "Notice to Investors," "Certain
                  Relationships and Related Transactions," "Description of
                  Certain Indebtedness," "Description of the Notes" and "Certain
                  Material United States Federal Income Tax Consequences" and
                  (B) in the Exchange Act Reports of statutes, legal and
                  governmental proceedings and contracts and other documents
                  fairly present, in all material respects, the information
                  required to be shown; it being understood that such counsel
                  need express no opinion as to the reserve data, reserve
                  reports, financial statements and related notes and schedules
                  and other financial data contained or incorporated by
                  reference in the Offering Document;



                                                                              19


                           (viii) Assuming the accuracy of the representations
                  and warranties of the parties to this Agreement and the
                  performance by such parties of their respective agreements
                  made herein, it is not necessary in connection with (i) the
                  offer, sale and delivery of the Offered Securities by the
                  Company and the Subsidiary Guarantors to the Purchaser
                  pursuant to this Agreement or (ii) the resales of the Offered
                  Securities by the Purchaser in the manner contemplated hereby
                  to register the Offered Securities and Subsidiary Guaranties
                  under the Securities Act;

                           (ix) The Indenture is duly qualified under the Trust
                  Indenture Act;

                           (x) The Subsidiary Guaranty set forth in the
                  Indenture conforms in all material respects to the description
                  thereof contained in the Offering Document. When the Offered
                  Securities have been issued, executed and authenticated in
                  accordance with the Indenture and delivered to and paid for by
                  the Purchaser in accordance with the terms of this Agreement,
                  the Subsidiary Guaranty of each Subsidiary Guarantor set forth
                  in the Indenture will constitute valid and legally binding
                  obligations of such Subsidiary Guarantor, enforceable in
                  accordance with its terms, subject to bankruptcy, insolvency,
                  fraudulent transfer, reorganization, moratorium and similar
                  laws of general applicability relating to or affecting
                  creditors' rights and to general equity principles;

                           (xi) The Exchange Securities have been duly
                  authorized by the Company; and if and when the Exchange
                  Securities are issued, executed and authenticated in
                  accordance with the terms of the Exchange Offer, the
                  Registration Rights Agreement and the Indenture, (i) the
                  Exchange Securities will be entitled to the benefits of the
                  Indenture including the Subsidiary Guaranty set forth in the
                  Indenture, (ii) the Exchange Securities will be the valid and
                  legally binding obligations of the Company, enforceable in
                  accordance with their terms, and (iii) the Subsidiary Guaranty
                  set forth in the Indenture will be the valid and binding
                  obligation of each Subsidiary Guarantor, and in the case of
                  clauses (ii) and (iii) subject to bankruptcy, insolvency,
                  fraudulent transfer, reorganization, moratorium and similar
                  laws of general applicability relating to or affecting
                  creditors' rights and to general equity principles;

                           (xii) Except as disclosed in the Offering Document,
                  none of the agreements filed as exhibits to the Exchange Act
                  Reports include any contracts, agreements or understandings
                  between the Company or any Subsidiary Guarantor and any person
                  granting such person the right to require the Company or such
                  Subsidiary Guarantor to file a registration statement under
                  the Securities Act with respect to any securities of the
                  Company or such Subsidiary Guarantor or to require the Company
                  or such Subsidiary Guarantor to include such securities with
                  the Securities and Subsidiary Guaranties registered pursuant
                  to any Registration Statement;



                                                                              20


                           In addition to the foregoing, such counsel shall also
                  provide a statement to the effect that such counsel has
                  participated in conferences with officers and representatives
                  of the Company, representatives of the independent public
                  accountants for the Company, the Purchaser and counsel for the
                  Purchaser at which the contents of the Offering Document and
                  related matters were discussed and, although such counsel is
                  not passing upon and does not assume any responsibility for
                  the accuracy, completeness or fairness of the statements
                  contained in the Offering Document, and has not made any
                  independent check or verification thereof (except as
                  specifically set forth in Section 6, paragraph d, item (vii)
                  above), based on such counsel's participation in such
                  conferences and conversations, their review of such records
                  and documents as described above, their understanding of the
                  U.S. federal securities laws and their experience they have
                  gained in their practice thereunder, they advise you that no
                  information has come to their attention that causes them to
                  believe that the Offering Document (except for reserve data,
                  reserve reports, financial statements and related notes and
                  schedules and other financial data included therein, as to
                  which they express no view), as of the date thereof, contained
                  or contains an untrue statement of a material fact or omitted
                  or omits to state a material fact necessary in order to make
                  the statements therein, in the light of the circumstances
                  under which they were made, not misleading.

                           The opinion of Akin, Gump, Strauss, Hauer and Feld,
                  L.L.P. described in this Section 6(d) shall be rendered to the
                  Purchaser at the request of the Company and shall so state
                  therein. Such opinion may, solely as it relates to the
                  application of laws other than the laws of the United States
                  and jurisdictions in which they are admitted, to the extent
                  such counsel deems proper and to the extent specified in such
                  opinion, be given directly from separate legal counsel
                  reasonably acceptable to the Purchaser and its legal counsel,
                  provided that such opinions from separate legal counsel are in
                  each case addressed directly to the Purchaser. Such counsel
                  may also state that, insofar as such opinion involves factual
                  matters, they have relied, to the extent they deem proper,
                  upon certificates of officers of the Company and it
                  subsidiaries and certificated of public officials, provided
                  that copies of such certificates are provided by such counsel
                  to the Purchaser;

                           For the purposes of the forgoing opinions and
                  statements the phrases "known to such counsel," "to such
                  counsel's knowledge" and words of similar meaning refer only
                  to the actual knowledge of the current lawyers of Akin, Gump
                  Strauss, Hauer & Feld, L.L.P. who have performed legal
                  services on behalf of the Company and the Subsidiary
                  Guarantors or the predecessors of such entities since March
                  19, 2002.



                                                                              21


                  (e) The Purchaser shall have received an opinion, dated the
         Closing Date, of Howard L. Boigon, Vice President and General Counsel
         of the Company, to the effect that:

                           (i) All outstanding shares of capital stock or
                  similar ownership interest of each Subsidiary Guarantor have
                  been duly and validly authorized and issued and are fully paid
                  and non-assessable;

                           (ii) Neither the Company nor any of its subsidiaries
                  is in violation of its respective charter or by-laws or, to
                  the knowledge of such counsel after due inquiry, in default in
                  the performance of any obligation, agreement, covenant or
                  condition contained in any indenture, loan agreement,
                  mortgage, lease or other agreement or instrument that is
                  material to the Company and its subsidiaries, taken as a
                  whole, to which the Company or any of its subsidiaries is a
                  party or by which the Company or any of its subsidiaries or
                  their respective property is bound;

                           (iii) Except as disclosed in the Offering Document,
                  there are no contracts, agreements or understandings between
                  the Company or any Subsidiary Guarantor and any person
                  granting such person the right to require the Company or such
                  Subsidiary Guarantor to file a registration statement under
                  the Securities Act with respect to any securities of the
                  Company or such Subsidiary Guarantor or to require the Company
                  or such Subsidiary Guarantor to include such securities with
                  the Securities and Subsidiary Guaranties registered pursuant
                  to any Registration Statement;

                           (iv) To such counsel's knowledge, after due inquiry,
                  there are no pending actions, suits or proceedings against or
                  affecting the Company, any of its subsidiaries or any of their
                  respective properties that, if determined adversely to the
                  Company or any of its subsidiaries, would individually or in
                  the aggregate have a Material Adverse Effect, or would
                  materially and adversely affect the ability of the Company to
                  perform its obligations under the Indenture, this Agreement,
                  or the Registration Rights Agreement, or which are otherwise
                  material in the context of the sale of the Offered Securities;
                  and no such actions, suits or proceedings are, to such
                  counsel's knowledge, threatened or contemplated.

                           In addition to the foregoing, such counsel shall also
                  provide a statement to the effect that such counsel has no
                  reason to believe that the Offering Document, or any amendment
                  or supplement thereto, or any Exchange Act Report as of the
                  date hereof and as of the Closing Date, contained any untrue
                  statement of a material fact or omitted to state any material
                  fact necessary to make the statements therein not misleading,
                  it being understood that such counsel need express no belief
                  or opinion as to the reserve information, financial statements
                  or other financial data contained in the Offering Document and
                  the Exchange Act Reports.



                                                                              22


                  (f) The Purchaser shall have received from Cravath, Swaine &
         Moore, counsel for the Purchaser, such opinion or opinions, dated the
         Closing Date, with respect to the incorporation of the Company, the
         validity of the Offered Securities, the Offering Document, the
         exemption from registration for the offer and sale of the Offered
         Securities by the Company to the Purchaser and the resales by the
         Purchaser as contemplated hereby and other related matters as the
         Purchaser may require, and the Company shall have furnished to such
         counsel such documents as they request for the purpose of enabling them
         to pass upon such matters.

                  (g) The Purchaser shall have received a certificate, dated the
         Closing Date, of the President or any Vice President and a principal
         financial or accounting officer of the Company in which such officers,
         to their knowledge, shall state that the representations and warranties
         of the Company in this Agreement are true and correct, that the Company
         has complied with all agreements and satisfied all conditions on its
         part to be performed or satisfied hereunder at or prior to the Closing
         Date, and that, subsequent to the respective dates of the most recent
         financial statements in the Offering Document there has been no
         material adverse change, nor any development or event involving a
         prospective material adverse change, in the condition (financial or
         other), business, properties or results of operations of the Company
         and its subsidiaries taken as a whole except as set forth in or
         contemplated by the Offering Document or as described in such
         certificate.

                  (h) The Purchaser shall have received a letter, dated the
         Closing Date, of KPMG LLP which meets the requirements of subsection
         (a) of this Section, except that the specified date referred to in such
         subsection will be a date not more than three days prior to the Closing
         Date for the purposes of this subsection.

                  (i) The Purchaser shall have received an executed copy of the
Registration Rights Agreement.

The Company will furnish the Purchaser with such conformed copies of such
opinions, certificates, letters and documents as the Purchaser reasonably
request. The Purchaser may in its sole discretion waive compliance with any
conditions to its obligations hereunder.

         7. Indemnification and Contribution. (a) Each of the Company and the
Subsidiary Guarantors will, jointly and severally, indemnify and hold harmless
the Purchaser, its affiliates, directors and officers and each person, if any,
who controls the Purchaser within the meaning of Section 15 of the Securities
Act, against any losses, claims, damages or liabilities, joint or several, to
which the Purchaser may become subject, under the Securities Act or the Exchange
Act or otherwise, insofar as such losses, claims, damages or liabilities (or
actions in respect thereof) arise out of or are based upon any untrue statement
or alleged untrue statement of any material fact contained in the Offering
Document, or any amendment or supplement thereto, or the Exchange Act Reports,
or arise out of or are based upon the omission or alleged omission to state



                                                                              23


therein a material fact required to stated therein or necessary in order to make
the statements therein, in the light of the circumstances under which they were
made, not misleading, including any losses, claims, damages or liabilities
arising out of or based upon the Company's failure to perform its obligations
under Section 5(a) of this Agreement, and will reimburse the Purchaser for any
legal or other expenses reasonably incurred by the Purchaser in connection with
investigating or defending any such loss, claim, damage, liability or action as
such expenses are incurred; provided, however, that the Company and the
Subsidiary Guarantors will not be liable in any such case to the extent that any
such loss, claim, damage or liability arises out of or is based upon an untrue
statement or alleged untrue statement in or omission or alleged omission from
any of such documents in reliance upon and in conformity with written
information furnished to the Company by the Purchaser specifically for use
therein, it being understood and agreed that the only such information consists
of the information described as such in subsection (b) below.

                  (b) The Purchaser will indemnify and hold harmless the Company
         and the Subsidiary Guarantors, their directors and officers and each
         person, if any, who controls the Company and the Subsidiary Guarantors
         within the meaning of Section 15 of the Securities Act, against any
         losses, claims, damages or liabilities to which the Company or the
         Subsidiary Guarantors may become subject, under the Securities Act or
         the Exchange Act or otherwise, insofar as such losses, claims, damages
         or liabilities (or actions in respect thereof) arise out of or are
         based upon any untrue statement or alleged untrue statement of any
         material fact contained in the Offering Document, or any amendment or
         supplement thereto, or arise out of or are based upon the omission or
         the alleged omission to state therein a material fact required to be
         stated therein or necessary in order to make the statements therein, in
         the light of the circumstances under which they were made, not
         misleading, in each case to the extent, but only to the extent, that
         such untrue statement or alleged untrue statement or omission or
         alleged omission was made in reliance upon and in conformity with
         written information furnished to the Company by the Purchaser through
         the Purchaser specifically for use therein, and will reimburse any
         legal or other expenses reasonably incurred by the Company in
         connection with investigating or defending any such loss, claim,
         damage, liability or action as such expenses are incurred, it being
         understood and agreed that the only such information furnished by the
         Purchaser consists of the following information in the Offering
         Document furnished by the Purchaser: the second and third sentences of
         the ninth paragraph and the tenth, eleventh and thirteenth paragraphs
         under the caption "Plan of Distribution"; provided, however, that the
         Purchaser shall not be liable for any losses, claims, damages or
         liabilities arising out of or based upon the Company's failure to
         perform its obligations under Section 5(a) of this Agreement.

                  (c) Promptly after receipt by an indemnified party under this
         Section of notice of the commencement of any action, such indemnified
         party will, if a claim in respect thereof is to be made against the
         indemnifying party under subsection (a) or (b) above, notify the
         indemnifying party of the commencement thereof; but the failure to
         notify the indemnifying party will not relieve it from any liability



                                                                              24


         which it may have to any indemnified party otherwise than under
         subsection (a) or (b) above. In case any such action is brought against
         any indemnified party and it notifies the indemnifying party of the
         commencement thereof, the indemnifying party will be entitled to
         participate therein and, to the extent that it may wish, jointly with
         any other indemnifying party similarly notified, to assume the defense
         thereof, with counsel satisfactory to such indemnified party (who shall
         not, except with the consent of the indemnified party, be counsel to
         the indemnifying party), and after notice from the indemnifying party
         to such indemnified party of its election so to assume the defense
         thereof, the indemnifying party will not be liable to such indemnified
         party under this Section for any legal or other expenses subsequently
         incurred by such indemnified party in connection with the defense
         thereof other than reasonable costs of investigation. In any such
         proceeding, any indemnified party shall have the right to retain its
         own counsel, but the fees and expenses of such counsel shall be at the
         expense of such indemnified party unless (i) the indemnifying party and
         the indemnified party shall have mutually agreed to the contrary; (ii)
         the indemnifying party has failed within a reasonable time to retain
         counsel reasonably satisfactory to the indemnified party; (iii) the
         indemnified party shall have reasonably concluded that there may be
         legal defenses available to it that are different from or in addition
         to those available to the indemnifying party; or (iv) the named parties
         in any such proceeding (including any impleaded parties) include both
         the indemnifying party and the indemnified party and representation of
         both parties by the same counsel would be inappropriate due to actual
         or potential differing interests between them. It is understood and
         agreed that the indemnifying party shall not, in connection with any
         proceeding or related proceeding in the same jurisdiction, be liable
         for the fees and expenses of more than one separate firm (in addition
         to any local counsel) for all indemnified parties, and that all such
         fees and expenses shall be reimbursed as they are incurred. Any such
         separate firm for the Purchaser, its affiliates, directors and officers
         and any control persons of the Purchaser shall be designated in writing
         by the Purchaser and any such separate firm for the Company, any
         Subsidiary Guarantor and any control persons of the Company and any
         Subsidiary Guarantor shall be designated in writing by the Company. No
         indemnifying party shall, without the prior written consent of the
         indemnified party, effect any settlement of any pending or threatened
         action in respect of which any indemnified party is or could have been
         a party and indemnity could have been sought hereunder by such
         indemnified party unless such settlement includes (i) an unconditional
         release of such indemnified party from all liability on any claims that
         are the subject matter of such action and (ii) does not include a
         statement as to or an admission of fault, culpability or failure to act
         by or on behalf of any indemnified party.

                  (d) If the indemnification provided for in this Section is
         unavailable or insufficient to hold harmless an indemnified party under
         subsection (a) or (b) above, then each indemnifying party shall
         contribute to the amount paid or payable by such indemnified party as a
         result of the losses, claims, damages or liabilities referred to in
         subsection (a) or (b) above (i) in such proportion as is appropriate to
         reflect the relative benefits received by the Company on the one



                                                                              25


         hand and the Purchaser on the other from the offering of the Offered
         Securities or (ii) if the allocation provided by clause (i) above is
         not permitted by applicable law, in such proportion as is appropriate
         to reflect not only the relative benefits referred to in clause (i)
         above but also the relative fault of the Company on the one hand and
         the Purchaser on the other in connection with the statements or
         omissions which resulted in such losses, claims, damages or liabilities
         as well as any other relevant equitable considerations. The relative
         benefits received by the Company and the Subsidiary Guarantors on the
         one hand and the Purchaser on the other shall be deemed to be in the
         same proportion as the total net proceeds from the offering (before
         deducting expenses) received by the Company bear to the total discounts
         and commissions received by the Purchaser from the Company under this
         Agreement. The relative fault shall be determined by reference to,
         among other things, whether the untrue or alleged untrue statement of a
         material fact or the omission or alleged omission to state a material
         fact relates to information supplied by the Company and the Subsidiary
         Guarantors or the Purchaser and the parties' relative intent,
         knowledge, access to information and opportunity to correct or prevent
         such untrue statement or omission. The amount paid by an indemnified
         party as a result of the losses, claims, damages or liabilities
         referred to in the first sentence of this subsection (d) shall be
         deemed to include any legal or other expenses reasonably incurred by
         such indemnified party in connection with investigating or defending
         any action or claim which is the subject of this subsection (d).
         Notwithstanding the provisions of this subsection (d), the Purchaser
         shall not be required to contribute any amount in excess of the amount
         by which the total discounts, fees and commissions received by the
         Purchaser exceeds the amount of any damages which the Purchaser has
         otherwise been required to pay by reason of such untrue or alleged
         untrue statement or omission or alleged omission.

                  (e) The obligations of the Company and the Subsidiary
         Guarantors under this Section shall be in addition to any liability
         which the Company or the Subsidiary Guarantors may otherwise have and
         shall extend, upon the same terms and conditions, to each person, if
         any, who controls the Purchaser within the meaning of the Securities
         Act or the Exchange Act; and the obligations of the Purchaser under
         this Section shall be in addition to any liability which the Purchaser
         may otherwise have and shall extend, upon the same terms and
         conditions, to each person, if any, who controls the Company and the
         Subsidiary Guarantors within the meaning of the Securities Act or the
         Exchange Act.

         8. Survival of Certain Representations and Obligations. The respective
indemnities, agreements, representations, warranties and other statements of the
Company or its officers and of the Purchaser set forth in or made pursuant to
this Agreement will remain in full force and effect, regardless of any
investigation, or statement as to the results thereof, made by or on behalf of
the Purchaser, the Company or any of their respective representatives, officers
or directors or any controlling person, and will survive delivery of and payment
for the Offered Securities. If for any reason the purchase of the Offered
Securities by the Purchaser is not consummated, the Company shall remain
responsible for the expenses to be paid or reimbursed by it pursuant to



                                                                              26


Section 5 and the respective obligations of the Company, the Subsidiary
Guarantors and the Purchaser pursuant to Section 7 shall remain in effect. If
the purchase of the Offered Securities by the Purchaser is not consummated for
any reason other than solely because of the occurrence of any event specified in
clause (iii), (iv), (v), (vi) or (vii) of Section 6(c), the Company and the
Subsidiary Guarantors, jointly and severally, will reimburse the Purchaser for
all out-of-pocket expenses (including fees and disbursements of counsel)
reasonably incurred by them in connection with the offering of the Offered
Securities.

         9. Notices. All communications hereunder will be in writing and, if
sent to the Purchaser will be mailed, delivered or telegraphed and confirmed to
Lehman Brothers Inc., 399 Park Avenue, Syndicate Registration, New York, NY
10022, Fax: (212) 526-0943, or, if sent to the Company or the Subsidiary
Guarantors, will be mailed, delivered or telegraphed and confirmed to it at
Westport Resources Corporation, 410 Seventeenth Street, Suite 2300, Denver,
Colorado, 80202-4436 Attention Donald D. Wolf.

         10. Successors. This Agreement will inure to the benefit of and be
binding upon the parties hereto and their respective successors and the
controlling persons referred to in Section 7, and no other person will have any
right or obligation hereunder, except that holders of Offered Securities shall
be entitled to enforce the agreements for their benefit contained in the second
and third sentences of Section 5(b) hereof against the Company as if such
holders were parties hereto.

         11. Counterparts. This Agreement may be executed in any number of
counterparts, each of which shall be deemed to be an original, but all such
counterparts shall together constitute one and the same Agreement.

         12. APPLICABLE LAW. THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED
IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO
PRINCIPLES OF CONFLICTS OF LAWS.

         Each of the Company and the Subsidiary Guarantors hereby submits to the
non-exclusive jurisdiction of the Federal and state courts in the Borough of
Manhattan in The City of New York in any suit or proceeding arising out of or
relating to this Agreement or the transactions contemplated hereby.



                                                                              27


         If the foregoing is in accordance with the Purchaser's understanding of
our agreement, kindly sign and return to us one of the counterparts hereof,
whereupon it will become a binding agreement among the Company, the Subsidiary
Guarantors and the Purchaser in accordance with its terms.

                                   Very truly yours,

                                   WESTPORT RESOURCES CORPORATION

                                   By: /s/ LON MCCAIN
                                       -----------------------------------------

                                   Name:  Lon McCain
                                   Title: Vice President, Treasurer and
                                          Chief Financial Officer

                                   SUBSIDIARY GUARANTORS:

                                   WESTPORT OIL AND GAS COMPANY, L.P.

                                       by WHG, INC.,
                                       its general partner,
                                       a Delaware corporation

                                   By: /s/ LON MCCAIN
                                       -----------------------------------------

                                   Name:  Lon McCain
                                   Title: Vice President, Treasurer and Chief
                                          Financial Officer

                                   WHG, INC.

                                   By: /s/ LON MCCAIN
                                       -----------------------------------------

                                   Name:  Lon McCain
                                   Title: Vice President, Treasurer and Chief
                                          Financial Officer

                                   WHL, INC.

                                   By: /s/ LON MCCAIN
                                       -----------------------------------------

                                   Name:  Lon McCain
                                   Title: Vice President, Treasurer and Chief
                                          Financial Officer



                                                                              28



                                   WESTPORT FINANCE CO.

                                   By: /s/ LON MCCAIN
                                       -----------------------------------------

                                   Name:  Lon McCain
                                   Title: Treasurer

                                   WESTPORT ARGENTINA LLC

                                       by WESTPORT OIL AND GAS
                                       COMPANY, L.P.,
                                       its member,
                                       a Delaware limited partnership

                                           by WHG, INC.,
                                           its general partner,
                                           a Delaware corporation

                                   By: /s/ LON MCCAIN
                                       -----------------------------------------

                                   Name:  Lon McCain
                                   Title: Vice President, Treasurer and Chief
                                          Financial Officer

                                   WESTPORT CANADA LLC

                                       by WESTPORT OIL AND GAS
                                       COMPANY, L.P.,
                                       its member,
                                       a Delaware limited partnership

                                           by WHG, INC.,
                                           its general partner,
                                           a Delaware corporation

                                   By: /s/ LON MCCAIN
                                       -----------------------------------------

                                   Name:  Lon McCain
                                   Title: Vice President, Treasurer and Chief
                                          Financial Officer



                                                                              29


                                   WESTPORT OVERRIDING ROYALTY LLC

                                       by WESTPORT OIL AND GAS
                                       COMPANY, L.P.,
                                       its manager,
                                       a Delaware limited partnership

                                           by WHG, INC.,
                                           its general partner,
                                           a Delaware corporation

                                   By: /s/ LON MCCAIN
                                       -----------------------------------------

                                   Name:  Lon McCain
                                   Title: Vice President, Treasurer and Chief
                                          Financial Officer

                                   JERRY CHAMBERS EXPLORATION COMPANY

                                       by WESTPORT OIL AND GAS
                                       COMPANY, L.P.,
                                       its general partner,
                                       a Delaware limited partnership

                                           by WHG, INC.,
                                           its general partner,
                                           a Delaware corporation

                                   By: /s/ LON MCCAIN
                                       -----------------------------------------

                                   Name:  Lon McCain
                                   Title: Vice President, Treasurer and Chief
                                          Financial Officer



                                                                              30


                                   HORSE CREEK TRADING & COMPRESSION COMPANY LLC

                                       by WESTPORT OIL AND GAS
                                       COMPANY, L.P.,
                                       its member,
                                       a Delaware limited partnership

                                           by WHG, INC.,
                                           its general partner,
                                           a Delaware corporation

                                   By: /s/ LON MCCAIN
                                       -----------------------------------------

                                   Name:  Lon McCain
                                   Title: Vice President, Treasurer and Chief
                                          Financial Officer

                                   WESTPORT FIELD SERVICES, LLC

                                   by WESTPORT RESOURCES CORPORATION,
                                   its manager,
                                   a Delaware corporation

                                   By: /s/ LON MCCAIN
                                       -----------------------------------------

                                   Name:  Lon McCain
                                   Title: Vice President, Treasurer and Chief
                                          Financial Officer




                                                                              31



The foregoing Purchase Agreement
   is hereby confirmed and
   accepted as of the date first
   above written.


LEHMAN BROTHERS INC.


    By /s/ MICHAEL A. GOLDBERG
       --------------------------------------
       Michael A. Goldberg, Managing Director



                                                                              32


                                   SCHEDULE A


                      Liens Affecting the Capital Stock of
                           Subsidiaries of the Company


1. Liens on the capital stock of subsidiaries owned directly or indirectly by
the Company and pledged pursuant to a pledge agreement in connection with the
Revolving Credit Facility (as defined in the Offering Memorandum).

2. Liens for taxes, assessments, fees and other governmental charges and claims
that are not yet due or which are being contested in good faith in appropriate
proceedings.




                                                                              33



                                   SCHEDULE B



                   List of Jurisdictions in Which the Company
                         or any subsidiary is Qualified
                     to do Business as a Foreign Corporation

         1. THE COMPANY.

<Table>
<Caption>
                      COMPANY                           STATE OF DOMESTICATION            FOREIGN QUALIFICATION
                                                                                    

            WESTPORT RESOURCES CORPORATION          Nevada                          Texas, Louisiana, Colorado
</Table>

         2. THE SUBSIDIARIES.

<Table>
<Caption>
                COMPANY                 STATE OF       FOREIGN QUALIFICATIONS                 OWNERSHIP
                                     DOMESTICATION
                                                                        
WESTPORT OIL AND GAS COMPANY, L.P.*  Delaware          Arkansas, Colorado,       WHG, Inc. 99% GP
                                                       Kansas, Louisiana,        WHL, Inc. 1%
                                                       Michigan, Montana,
                                                       Nebraska, New
                                                       Mexico, North
                                                       Dakota, Oklahoma,
                                                       South Dakota, Texas,
                                                       Utah, Wyoming
WESTPORT ARGENTINA LLC*              Colorado          --                        Westport Oil and Gas Company, L.P., 100%

WESTPORT CANADA LLC*                 Delaware          --                        Westport Oil and Gas Company, L.P., 100%

WESTPORT OVERRIDING ROYALTY LLC*     Colorado          --                        Westport Oil and Gas Company, L.P., 100%

WESTPORT FINANCE CO.                 Wyoming           --                        Westport Resources Corporation, 100%

JERRY CHAMBERS EXPLORATION COMPANY*  Colorado          --                        Westport Oil and Gas Company, L.P., 99% GP
                                                                                 Westport Canada LLC 1% GP

BELCO (CAYMAN ISLANDS) CORP.         Cayman Islands    --                        Westport Resources Corporation, 100%

HORSE CREEK TRADING & COMPRESSION    Colorado          North Dakota              Westport Oil and Gas Company, L.P., 100%
LLC*

WESTPORT FIELD SERVICES, LLC*        Delaware          Utah                      Westport Resources Corporation, 100%

WHG, INC.*                           Delaware          Colorado, North           Westport Resources Corporation, 100%
                                                       Dakota, Texas,
                                                       South Dakota

WHL, INC.*                           Delaware          Colorado                  Westport Resources Corporation, 100%
</Table>

- ----------

* Subsidiary Guarantor