Term Loan Agreement

TERM LOAN AGREEMENT (this “Agreement”) dated as of January 30, 2007, between CONTANGO OIL & GAS COMPANY, a Delaware corporation (the “Borrower”), and CENTAURUS CAPITAL LLC, (the “Lender”).

In consideration of the mutual covenants, rights and obligations contained herein, the benefits to be derived therefrom, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereby agree as follows:

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

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

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

“Agreement” has the meaning set forth in the introductory paragraph hereof.

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

“Borrower” means Contango Oil & Gas Company, a Delaware corporation, and its successors and permitted assigns.

“Business Acquisition” means (a) an Investment by Borrower or any other Contango Entity in any other Person pursuant to which such Person shall become a Subsidiary or shall be merged into or consolidated with Borrower or such Contango Entity or (b) an acquisition by Borrower or any other Contango Entity of the property and assets of any other Person that constitute substantially all of the assets of such Person or any division or other business unit of such Person.

“Business Day” means any day that is not a Saturday, Sunday or other day on which commercial banks in Houston, Texas, are authorized or required by Law to remain closed.

“Capital Lease Obligations” of any Person means the obligations of such Person to pay rent or other amounts under any lease of (or other arrangement conveying the right

to use) real or personal property, or a combination thereof, which obligations are required to be classified and accounted for as capital leases on a balance sheet of such Person under its method of accounting, and the amount of such obligations shall be the capitalized amount thereof determined in accordance with its method of accounting.

(a) direct obligations of, or obligations the principal of and interest on which are unconditionally guaranteed or insured by, the United States of America (or by any agency thereof to the extent such obligations are backed by the full faith and credit of the United States of America), in each case maturing within one year from the date of acquisition thereof;

(b) investments in commercial paper maturing within one year from the date of acquisition thereof and having, at such date of acquisition, a credit rating of at least A-1 from Standard & Poor’s Rating Service (“S&P”) and P-1 from Moodys Investor’s Service, Inc. (“Moodys”);

(c) investments in certificates of deposit, banker’s acceptances and time deposits maturing within one year from the date of acquisition thereof issued or guaranteed by or placed with, and money market deposit accounts issued or offered by, any domestic office of any commercial bank organized under the Laws of the United States of America or any State thereof that has a combined capital and surplus and undivided profits of not less than $500,000,000;

(d) fully collateralized repurchase agreements with a term of not more than 30 days for securities described in clause (a) above and entered into with a financial institution satisfying the criteria described in clause (c) above;

(e) money market funds that (i) comply with the criteria set forth in Securities and Exchange Commission Rule 2a-7 under the Investment Company Act of 1940, (ii) are rated or invest solely in the assets described in clauses (a) through (d) above and (iii) have portfolio assets of at least $5,000,000,000;

(f) marketable direct obligations issued by any state of the United States of America or any political subdivision of any such state or any public instrumentality thereof, in each case maturing within one year after the date of acquisition and having, at such date, the highest rating obtainable from either S&P or Moodys; and

(g) other securities, instruments, bonds and obligations rated at least AA by S&P or Aa by Moodys.

“Change in Control” means (a) any Person or “group” of Persons (within the meaning of Rules 13d-3 and 13d-5 under the Exchange Act) other than Kenneth R. Peak shall have (i) acquired, directly or indirectly, beneficial ownership (within the meaning of Rule 13d-3 under the Exchange Act) of securities representing 30% or more of the combined voting power of all outstanding voting securities of the Borrower or (ii) obtained the power (whether or not exercised) to elect a majority of the Borrower’s

directors, (b) individuals who were directors of the Borrower on the date hereof, and individuals elected as directors by not less than two-thirds of the individuals who were directors of the Borrower on such date, shall cease to constitute a majority of the members of the board of directors of the Borrower, or (c) Kenneth R. Peak shall cease to be an executive officer of the Borrower or shall otherwise cease to be active in the day to day management of the Borrower’s operations and activities.

“Change in Law” means (a) the adoption of any Law after the date of this Agreement, (b) any change in any Law or in the interpretation or application thereof by any Governmental Authority after the date of this Agreement or (c) compliance by the Lender with any request, guideline or directive (whether or not having the force of Law) of any Governmental Authority made or issued after the date of this Agreement.

“Closing Date” means January 30, 2007, or such other date as the Borrower and the Lender shall agree.

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

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

“Debt” of any Person means, without duplication, (a) all obligations of such Person for borrowed money or with respect to deposits or advances of any kind, (b) all obligations of such Person evidenced by bonds, debentures, notes or similar instruments, (c) all obligations of such Person upon which interest charges are customarily paid, (d) all obligations of such Person under conditional sale or other title retention agreements relating to property acquired by such Person, (e) all obligations of such Person in respect of the deferred purchase price of property or services (excluding current accounts payable incurred in the ordinary course of business that are due not more than 90 days from the creation thereof), (f) all Debt of others secured by (or for which the holder of such Debt has an existing right, contingent or otherwise, to be secured by) any Lien on property owned or acquired by such Person, whether or not the Debt secured thereby has been assumed, (g) all guarantees by such Person of Debt of others, (h) all Capital Lease Obligations of such Person, (i) all obligations, contingent or otherwise, of such Person as an account party in respect of letters of credit and letters of guaranty, (j) all obligations, contingent or otherwise, of such Person in respect of bankers’ acceptances, and (k) any other items required to be listed as a liability under the Borrower’s method of accounting, other than accounts payable not more than 90 days from date, incurred in the ordinary course of business. The Debt of any Person shall include the Debt of any other entity (including any partnership in which such Person is a general partner) to the extent such Person is liable therefor as a result of such Person’s ownership interest in or other relationship with such entity, except to the extent the terms of such Debt provide that such Person is not liable therefor.

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

“Drawdown Termination Date” has the meaning given such term in Section 2.1(a).

“Environmental Laws” means all Laws, notices or binding agreements issued, promulgated or entered into by any Governmental Authority, relating in any way to the environment, preservation or reclamation of natural resources, the management, release or threatened release of any Hazardous Substance or to health and safety matters.

“Environmental Permits” means any and all permits, licenses, registrations, notifications, approvals, exemptions and any other authorization required under any applicable Environmental Law.

“Equity Interests” means shares of capital stock, partnership interests, membership interests in a limited liability company, beneficial interests in a trust or other equity ownership interests in a Person, and any warrants, options or other rights entitling the holder thereof to purchase or acquire any such equity interest.

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

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

“ERISA Event” means (a) any “reportable event”, as defined in section 4043 of ERISA or the regulations issued thereunder with respect to a Plan (other than an event for which the 30-day notice period is waived); (b) the existence with respect to any Plan of an “accumulated funding deficiency” (as defined in section 412 of the Code or section 302 of ERISA), whether or not waived; (c) the filing pursuant to section 412(d) of the Code or section 303(d) of ERISA of an application for a waiver of the minimum funding standard with respect to any Plan; (d) the incurrence by the Borrower or any of its ERISA Affiliates of any liability under Title IV of ERISA with respect to the termination of any Plan; (e) the receipt by the Borrower or any ERISA Affiliate from the PBGC or a plan administrator of any notice relating to an intention to terminate any Plan or Plans or to appoint a trustee to administer any Plan; (f) the incurrence by the Borrower or any of its ERISA Affiliates of any liability with respect to the withdrawal or partial withdrawal from any Plan or Multiemployer Plan; or (g) the receipt by the Borrower or any ERISA Affiliate of any notice, or the receipt by any Multiemployer Plan from the Borrower or any ERISA Affiliate of any notice, concerning the imposition of Withdrawal Liability or a determination that a Multiemployer Plan is, or is expected to be, insolvent or in reorganization, within the meaning of Title IV of ERISA.

“Event of Default” has the meaning assigned to such term in Article 7.

“Fee Letter” has the meaning assigned to such term in Section 4.1(l).

“Financial Officer” means the chief financial officer, principal accounting officer, treasurer or controller of the Borrower.

“Freeport” means Freeport LNG Development, L.P., a Delaware limited partnership.

“GAAP” means, subject to the qualifications contained in Section 1.3, generally accepted accounting principles in the United States of America, as in effect from time to time.

“Governmental Approval” means (a) any authorization, consent, approval, license, waiver, ruling, permit, tariff, rate, certification, exemption, filing, variance, claim, order, judgment, decree, sanction or publication of, by or with; (b) any notice to; (c) any declaration of or with; or (d) any registration by or with, or any other action or deemed action by or on behalf of, any Governmental Authority.

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

“guarantee” of or by any Person (the “guarantor”) means any obligation, contingent or otherwise, of the guarantor guaranteeing or having the economic effect of guaranteeing any Debt or other obligation of any other Person (the “primary obligor”) in any manner, whether directly or indirectly, and including any obligation of the guarantor, direct or indirect, (a) to purchase or pay (or advance or supply funds for the purchase or payment of) such Debt or other obligation or to purchase (or to advance or supply funds for the purchase of) any security for the payment thereof, (b) to purchase or lease property, securities or services for the purpose of assuring the owner of such Debt or other obligation of the payment thereof, (c) to maintain working capital, equity capital or any other financial statement condition or liquidity of the primary obligor so as to enable the primary obligor to pay such Debt or other obligation or (d) as an account party in respect of any letter of credit or letter of guaranty issued to support such Debt or obligation; provided, that the term guarantee shall not include endorsements for collection or deposit in the ordinary course of business.

“Guarantors” means Contango Operators, Inc., REX Offshore Corporation, COE Offshore, LLC, Contango Gas Solutions I, Inc., Contango Gas Solutions II, Inc., Contango Gas Solutions, LP, Contango STEP I, Inc., Contango STEP II, Inc., Contango STEP, L.P., and any other Subsidiary which now or hereafter guarantees the obligations and indebtedness of Borrower under the Loan Documents pursuant to Section 5.10.

“Guaranty” means a Guaranty, to be executed by each of the Guarantors, in the form attached hereto as Exhibit 1.2.

“Hazardous Substances” means all explosive or radioactive substances or wastes and all hazardous or toxic substances, wastes or other pollutants, including petroleum or petroleum distillates, asbestos or asbestos containing materials, polychlorinated biphenyls, radon gas, infectious or medical wastes and all other substances or wastes of any nature regulated pursuant to any applicable Environmental Law.

“Incremental Funding Event” has the meaning assigned to such term in Section 2.1(a).

“Indemnified Taxes” means Taxes other than, with respect to the Lender, taxes that are imposed on its overall net income by the United States of America and taxes that are imposed on its overall net income (and franchise taxes imposed in lieu thereof) by the state or foreign jurisdiction under the laws of which the Lender is organized or is a resident, or has a fixed place of business or a permanent establishment, or any political subdivision of any of the foregoing, and taxes that are imposed on its overall net income (and franchise taxes imposed in lieu thereof) by the state or foreign jurisdiction of its applicable lending office or any political subdivision thereof.

“Independent Engineer” means W. D. Von Gonten & Co., with respect to on-shore reserves, William M. Cobb & Associates, Inc., with respect to off-shore reserves, or another independent engineering firm selected by the Borrower and approved in writing by Lender.

“Interest Period” means the period commencing on the date of the Loan, or on the last day of the immediately preceding Interest Period, as applicable, and ending on the numerically corresponding day in the calendar month that is one month thereafter; provided, that (a) if any Interest Period would end on a day other than a Business Day, such Interest Period shall be extended to the next succeeding Business Day unless such next succeeding Business Day would fall in the next calendar month, in which case such Interest Period shall end on the next preceding Business Day and (b) any Interest Period that commences on the last Business Day of a calendar month (or on a day for which there is no numerically corresponding day in the last calendar month of such Interest Period) shall end on the last Business Day of the last calendar month of such Interest Period.

“Investment” means (a) any direct or indirect purchase or other acquisition by the Borrower or any of its Subsidiaries of, or of a beneficial interest in, any Equity Interests of any other Person and (b) any loan, advance (other than advances to employees for moving, entertainment and travel expenses, drawing accounts and similar expenditures in the ordinary course of business) or capital contribution by the Borrower or any of its Subsidiaries to any other Person. The amount of any investment shall be the original cost of such investment plus the cost of all additions thereto, without any adjustments for increases or decreases in value, or write-ups, write-downs or write-offs with respect to such Investment.

“Law” means all laws, statutes, treaties, ordinances, codes, acts, rules, regulations, Governmental Approvals and Orders of all Governmental Authorities, whether now or hereafter in effect.

“LIBO Rate” means, with respect to any Interest Period, the rate as calculated by the British Bankers’ Association and obtained through a nationally recognized service such as Dow Jones (Telerate), Reuters or Bloomberg (the “Service”) and including any successor or substitute page of such Service, or any successor to or substitute for such Service, providing rate quotations comparable to those currently provided on such page of such Service, as determined by the Lender from time to time for purposes of providing quotations of interest rates applicable to dollar deposits in the London interbank market) at approximately 11:00 a.m., London time, two Business Days prior to the commencement of such Interest Period, as the rate for dollar deposits with a maturity comparable to such Interest Period. In the event that such rate is not available at such time for any reason, then the “LIBO Rate” for such Interest Period shall be the rate reasonably determined by Lender, at which dollar deposits in the amount of the outstanding Loan and for a maturity comparable to such Interest Period are offered by major commercial banks in immediately available funds in the London interbank market at approximately 11:00 a.m., London time, two Business Days prior to the commencement of such Interest Period.

“Lien” means, with respect to any asset, (a) any mortgage, deed of trust, lien, pledge, hypothecation, encumbrance, charge or security interest in, on or of such asset, (b) the interest of a vendor or a lessor under any conditional sale agreement, capital lease or title retention agreement (or any financing lease having substantially the same economic effect as any of the foregoing) relating to such asset and (c) in the case of securities, any purchase option, call or similar right of a third party with respect to such securities.

“Loan” means all of the loans and advances made by the Lender to the Borrower pursuant to Section 2.1(a).

“Loan Documents” means this Agreement, the Note, the Pledge Agreements, each Guaranty, the Fee Letter and any other agreement entered into in connection with the transactions contemplated by this Agreement.

“Material Adverse Effect” means a material adverse effect on (a) the business, assets, property, financial condition or results of operations of the Borrower and its Subsidiaries, taken as a whole, (b) the ability of the Borrower to perform its obligations under the Loan Documents or (c) the validity or enforceability of the Loan Documents or the validity, perfection, priority or enforceability of the Liens created thereunder.

“Material Debt” means Debt (other than the Loan) of the Borrower or any other Contango Entity in an aggregate principal amount exceeding $1,000,000.

“Multiemployer Plan” means a multiemployer plan as defined in section 4001(a)(3) of ERISA.

“Oil and Gas Properties” means all oil, gas and/or mineral leases, oil, gas or mineral properties, mineral servitudes and/or mineral rights of any kind (including, without limitation, mineral fee interests, lease interests, farmout interests, overriding royalty and royalty interests, net profits interests, oil payment interests, production payment interests and other types of mineral interests), and all oil and gas gathering, treating, storage, processing and handling assets.

“Order” means a binding order, writ, judgment, award, injunction, decree, ruling or decision of any Governmental Authority or arbitrator.

“Organizational Documents” means, with respect to any entity, the articles or certificate of incorporation, bylaws, partnership agreement or membership agreement or equivalent governing documents of such entity.

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

“Partnership Agreement” means the that certain Amended and Restated Limited Partnership Agreement dated February 27, 2003, originally executed by and among Freeport LNG-GP, Inc., a Delaware corporation, as the general partner, Freeport LNG Investments, LLC, a Delaware limited liability company, and Cheniere LNG, Inc., a Delaware corporation, both as limited partners, creating Freeport, as amended by the First Amendment thereto dated December 19, 2003, and as further amended, modified or supplemented from time to time.

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

“Permitted Liens“ means with respect to any asset or property (a) royalties, overriding royalties, reversionary interests, production payments and similar burdens; (b) sales contracts or other arrangements for the sale of production of oil, gas or associated liquid or gaseous hydrocarbons which would not (when considered cumulatively with the matters set forth in clause (a) above) deprive Borrower or any of its Subsidiaries of any material right in respect of its assets or properties (except for rights customarily granted

with respect to such contracts and arrangements); (c) statutory Liens for taxes or other assessments that are not yet delinquent (or that, if delinquent, are being contested in good faith by appropriate proceedings, levy and execution thereon having been stayed and continue to be stayed and for which Borrower has set aside on its books adequate reserves in accordance with GAAP); (d) easements, rights of way, servitudes, permits, surface leases and other rights in respect to surface operations, pipelines, grazing, logging, canals, ditches, reservoirs or the like, conditions, covenants and other restrictions, and easements of streets, alleys, highways, pipelines, telephone lines, power lines, railways and other easements and rights of way on, over or in respect of Borrower’s or any of its Subsidiaries’ assets or properties and that do not individually or in the aggregate, cause a Material Adverse Effect; (e) materialmen’s, mechanic’s, repairman’s, employee’s, warehousemen’s, landlord’s, carrier’s, pipeline’s, contractor’s, sub-contractor’s, operator’s, non-operator’s (arising under operating or joint operating agreements), and other Liens (including any financing statements filed in respect thereof) incidental to obligations incurred by Borrower or any of its Subsidiaries in connection with the construction, maintenance, development, transportation, storage or operation of Borrower’s or such Subsidiary’s assets or properties to the extent not delinquent (or which, if delinquent, are being contested in good faith by appropriate proceedings and for which Borrower or such Subsidiary has set aside on its books adequate reserves in accordance with GAAP); (f) Liens in connection with workmen’s compensation, unemployment insurance or other social security, old age pension or public liability obligations; and (g) rights reserved to or vested in any municipality, governmental, statutory or other public authority to control or regulate Borrower’s or its Subsidiaries’ assets and properties in any manner, and all applicable laws, rules and orders from any Governmental Authority.

“Person” means any natural person, corporation, limited liability company, trust, joint venture, association, company, partnership, Governmental Authority or other entity.

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

“Pledge Agreements” means those certain Pledge Agreements, dated as of the date hereof, made by each of the Borrower, REX Offshore Corporation, COE Offshore, LLC, Contango Gas Solutions I, Inc., Contango Gas Solutions II, Inc., Contango STEP I, Inc., and Contango STEP II, Inc., in favor of the Lender.

“Preferred Stock” means any Perpetual Cumulative Convertible Preferred Stock (in any series) of the Borrower.

“Price Criteria” means certain price assumptions determined by the Borrower’s then current hydrocarbon borrowing base lending bank (or, if the Borrower has no such borrowing base lending bank at such time, The Royal Bank of Scotland plc) used by said bank in the determination of borrowing base calculations for senior secured oil and gas

loans; provided in each instance that such bank discloses such pricing assumptions, in writing, to Borrower and the Lender; and provided further that if such price assumptions are not disclosed or otherwise available, “Price Criteria” shall mean price assumptions determined by Lender pursuant to its then current policies and procedures used in making senior secured oil and gas loans.

“Producing Reserves” means the Proved Reserves from reservoirs that are currently being produced and sold.

“Project Documents” means the Partnership Agreement and all amendments thereto, the Partnership Interest Purchase Agreement dated March 1, 2003, entered into among the Borrower, Sundance, Cheniere LNG, Inc., and Cheniere Energy, Inc., the consent letter dated March 1, 2003, executed by the general partner of Freeport granting consent to the transfer of a 10% interest in Freeport from Cheniere LNG, Inc. to Borrower, and any other contracts, amendments, stockholder agreements or other documents or agreements executed in connection therewith.

“Proved Reserves” means the estimated quantities of crude oil, condensate, natural gas and natural gas liquids from Oil and Gas Properties, as determined by the Borrower’s Independent Engineer, that geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating conditions (i.e., prices and costs as of the date the estimate is made), as determined in accordance with Rule 4-10 of Regulation S-X promulgated by, and other applicable requirements of, the Securities and Exchange Commission.

“PV-9 Value” means, with respect to any Oil and Gas Properties, the then present value of the future net revenues attributable to such Oil and Gas Properties as determined by the Independent Engineer and using a 9% discount rate and the Price Criteria of the then relevant Reserve Report under Section 5.1(j), and specifically with respect to the Proved Reserves and the Producing Reserves owned by the Contango Entities (other than Contango Offshore Exploration, LLC and Republic Exploration LLC), such value calculated on the basis of the most recent Reserve Report and said Price Criteria.

“RBS Loan Agreement” has the meaning assigned to such term in Section 6.2.

“Reserve Report” means a report separately stated with respect to (a) all Oil and Gas Properties owned directly or indirectly by the Contango Entities valued in accordance with Rule 4-10 of Regulation S-X promulgated by, and other applicable requirements of, the United States Securities and Exchange Commission, and (b) all Oil and Gas Properties owned directly or indirectly by the Contango Entities valued using the Price Criteria, setting forth, among other things, (i) the PV-9 Value of such Oil and Gas Properties, (ii) the Proved Reserves attributable to such Oil and Gas Properties, (iii) the Producing Reserves attributable to such Oil and Gas Properties and (iv) a projection of the rate of production of the Proved Reserves attributable to such Properties as of the date of such Reserve Report.

“Restricted Payment” means any distribution (whether in cash, securities or other property) with respect to any Equity Interests in the Borrower or any of its Subsidiaries, or any payment (whether in cash, securities or other property), including any sinking fund or similar deposit, on account of the purchase, redemption, retirement, acquisition, cancellation or termination of any such Equity Interests in the Borrower or any of its Subsidiaries or any option, warrant or other right to acquire any such Equity Interests in the Borrower or any of its Subsidiaries.

“Statutory Reserve Rate” means, at any time, a fraction (expressed as a decimal), the numerator of which is the number one and the denominator of which is the number one minus the aggregate of the maximum reserve percentages (including any marginal, special, emergency or supplemental reserves) expressed as a decimal in effect at such time (as established by the Board of Governors of the U.S Federal Reserve System) to which the Lender is subject for Eurocurrency funding (currently referred to as “Eurocurrency Liabilities” in Regulation D of the Board of Governors).

“Subsidiary” means, with respect to any Person (the “parent”) at any date, any corporation, limited liability company, partnership, association or other entity (other than Contango Offshore Exploration, LLC and Republic Exploration LLC), the accounts of which would be consolidated with those of the parent in the parent’s consolidated financial statements if such financial statements were prepared in accordance with the Borrower’s method of accounting as of such date, as well as any other corporation, limited liability company, partnership, association or other entity (a) of which securities or other ownership interests representing more than 50% of the equity or more than 50% of the ordinary voting power or, in the case of a partnership, more than 50% of the general partnership interests are, as of such date, owned, controlled or held, or (b) that is, as of such date, otherwise Controlled, by the parent or one or more Subsidiaries of the parent or by the parent and one or more Subsidiaries of the parent.

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

“Transactions” means the execution, delivery and performance by the Borrower and the Guarantors of this Agreement and the other Loan Documents to which it is a party, the borrowing of the Loan and the use of the proceeds thereof.

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

1.2 Terms Generally. The definitions of terms herein shall apply equally to the singular and plural forms of the terms defined. Whenever the context may require, any pronoun shall include the corresponding masculine, feminine and neuter forms. The words “include”, “includes” and “including” shall be deemed to be followed by the phrase “without limitation”. The word “will” shall be construed to have the same meaning and effect as the word “shall”.

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

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

(a) Subject to the terms and conditions set forth herein, on the second Business Day following the Closing Date the Lender shall make a loan to the Borrower in the principal amount requested by the Borrower up to a maximum of $30,000,000. If less than $30,000,000 is borrowed on such second Business Day after the Closing Date, and subject to the terms and conditions set forth herein, Borrower shall be entitled to request that additional amounts be advanced to it from time to time in increments of not less than $1,000,000 such that the total Loan outstanding would equal a maximum of $30,000,000; provided, however, that no amounts may be advanced which would cause the total Loan outstanding to exceed $10,000,000 unless and until Borrower has demonstrated to Lender’s reasonable satisfaction that the No. 1 well located in federal offshore waters on Block 10, Eugene Island Area (OCS-G 23851) has produced hydrocarbons at an average rate of 25 mmcfe (million cubic feet of gas equivalent) or more per day for a period of five consecutive days (the “Incremental Funding Event”). All advances (other than the initial advance to be made pursuant to the first sentence of this Section 2.1(a)) shall require (i) five (5) Business Days prior written notice thereof (for any advance of $3,000,000 or less), or (ii) ten (10) Business Days prior written notice thereof (for any advance in excess of $3,000,000), and shall be made pursuant to a Request for Advance

in the form of Exhibit 2.1 hereto. Such additional advances shall be requested and made not later than five days prior to the Maturity Date. If less than $30,000,000 is advanced by Lender hereunder by the date which is ten (10) Business Days prior to the Maturity Date (the “Drawdown Termination Date”), the Loan shall be in the maximum amount outstanding on such date and there shall be no further advances hereunder. Amounts prepaid or repaid with respect to the Loan may not be reborrowed. The Lender shall make any advances under the Loan by wire transfer of immediately available funds to the account of the Borrower set forth in Exhibit 2.1.

(b) The Borrower shall prepare, execute and deliver to the Lender a Note payable to the order of the Lender substantially in the form of Exhibit 1.1. Thereafter, the Loan shall at all times (including after assignment pursuant to Section 8.3) be represented by a Note payable to the order of the payee named therein.

(c) The Lender shall maintain an account evidencing the indebtedness of the Borrower to the Lender resulting from the Loan, including the amounts of principal and interest payable and paid to the Lender from time to time hereunder. The entries made in such account shall, to the extent permitted by applicable law, be prima facie evidence of the existence and amounts of the obligations of the Borrower recorded therein absent manifest error; provided, however, that the failure of the Lender to maintain any such account or any error therein shall not in any manner affect the obligation of the Borrower to repay the Loan in accordance with the terms of this Agreement.

2.2 Repayment of Loan. The Borrower hereby unconditionally promises to pay to the Lender the Loan in full on the Maturity Date.

(a) The Borrower may, upon three Business Days’ notice to the Lender, prepay the Loan in whole or in part without premium or penalty (other than any amounts which may be due under Section 2.7 as a result of such prepayment). Any prepayment of principal under this section shall be in the minimum principal amount of $2,000,000.00 and additional intervals of $1,000,000.00 and shall be accompanied by all interest then accrued and unpaid on the principal so repaid together with any amounts due under Section 2.7.

(b) Subject to Section 8.12, if the Loan is not funded in the full amount at any time during the period from the Closing Date to the Drawdown Termination Date, the Borrower shall pay to the Lender a non-use fee in the amount of 0.50% per annum multiplied by such non-funded amount, such fee to be paid on the last day of each calendar quarter, commencing March 31, 2007 through and including September 30, 2008, and on the Drawdown Termination Date. For the avoidance of doubt, the amount of any advances under the Loan that are prepaid or repaid shall not be subject to such non-use fee. If the Loan is not fully funded in the amount of $30,000,000 by the Drawdown Termination Date, the Loan shall be deemed to be fully funded and no further non-use fee shall be payable.

(a) The Loan shall bear interest on each day during the related Interest Period at the Adjusted Eurodollar Rate in effect on the first day of such Interest Period plus 5.0%.

(b) Notwithstanding the foregoing, if any principal of or interest on the Loan or any other amount payable by the Borrower hereunder is not paid when due, whether at stated maturity, upon acceleration or otherwise, such overdue amount shall bear interest, after as well as before judgment, at a rate per annum equal to 2% plus the rate otherwise applicable to the Loan.

(c) Accrued interest on the Loan shall be payable in arrears on each Interest Payment Date; provided that (i) interest accrued pursuant to paragraph (b) of this Section shall be payable on demand and (ii) in the event of any repayment or prepayment of the Loan, accrued interest on the principal amount repaid or prepaid shall be payable on the date of such repayment or prepayment.

(d) All interest hereunder shall be computed on the basis of a year of 360 days, and in each case shall be payable for the actual number of days elapsed (including the first day but excluding the last day).

2.5 Payments Generally. The Borrower shall make each payment required to be made by it hereunder (whether of principal, interest, or otherwise) prior to 2:00 p.m., Houston, Texas time, on the date when due, in immediately available funds, without set-off or counterclaim. Any amounts received after such time on any date may, in the discretion of the Lender, be deemed to have been received on the next succeeding Business Day for purposes of calculating interest thereon. All such payments shall be made to the Lender by wire transfer to such account of Lender as may be designated from time to time in a notice from Lender to Borrower. If any payment hereunder shall be due on a day that is not a Business Day, the date for payment shall be extended to the next succeeding Business Day, and, in the case of any payment accruing interest, interest thereon shall be payable for the period of such extension. All payments hereunder shall be made in U.S. dollars.

in each case other than as specified in paragraph (b) below, and the result of any of the foregoing shall be to increase the cost to the Lender of maintaining the Loan or to reduce the amount of any sum received or receivable by the Lender hereunder (whether of principal, interest or otherwise), in each case by an amount

that the Lender reasonably deems to be material, then the Borrower shall pay to the Lender, in accordance with paragraph (c) of this Section 2.6 after the Borrower’s receipt of its written demand accompanied by documentation specifying in reasonable detail the events and circumstances and the applicable Change in Law in support of any such reimbursement request, such additional amount or amounts necessary to compensate the Lender for such additional costs incurred or reduction suffered.

(b) If the Lender determines that any Change in Law regarding capital requirements has or would have the effect of reducing the rate of return on the Lender’s capital or on the capital of the Lender’s holding company, if any, as a consequence of this Agreement or the Loan made by the Lender to a level below that which the Lender or the Lender’s holding company could have achieved but for such Change in Law (taking into consideration the Lender’s policies and the policies of the Lender’s holding company with respect to capital adequacy) by an amount reasonably deemed by the Lender to be material, then from time to time upon submission by the Lender to the Borrower of a written demand therefor accompanied by documentation specifying in reasonable detail the events and circumstances applicable to such reduction and the applicable Change in Law in support of such demand, and the amount demanded pursuant hereto, the Borrower will, within 30 days after receipt of such demand, pay to the Lender such additional amount or amounts necessary to compensate the Lender or such Lender’s holding company for any such reduction suffered.

(c) A certificate of the Lender setting forth the amount or amounts necessary to compensate the Lender or its holding company, as the case may be, together with the relevant demand and accompanying documentation, all as specified in paragraph (a) or (b) of this Section 2.6 shall be delivered to the Borrower and shall be conclusive absent manifest error. The Borrower shall pay the Lender the amount shown as due on any such certificate within 30 days after receipt thereof.

(d) Failure or delay on the part of the Lender to demand compensation pursuant to this Section 2.6 shall not constitute a waiver of the Lender’s right to demand such compensation; provided that the Borrower shall not be required to compensate the Lender pursuant to this Section for any increased costs or reductions incurred more than 180 days prior to the date that the Lender notifies the Borrower of the Change in Law giving rise to such increased costs or reductions and of the Lender’s intention to claim compensation therefor in accordance with this Section; provided further that, if the Change in Law giving rise to such increased costs or reductions is retroactive, then the 180-day period referred to above shall be extended to include the period of retroactive effect thereof.

2.7 Break Funding Payments. If the Borrower makes any principal payment other than on the last day of an Interest Period applicable thereto (including as a result of an Event of Default or any prepayment under Section 2.3(a)), then the Borrower shall compensate the Lender for the loss, cost and expense attributable to such event. Such loss, cost or expense to the Lender shall be deemed to include an amount determined by the Lender to be the excess, if any, of (a) the amount of interest which would have accrued on the amount so prepaid or converted,

or not so borrowed, continued, converted or prepaid at the Adjusted Eurodollar Rate that would have been applicable to the Loan, for the period from the date of such event to the last day of the then current Interest Period therefor, over (b) the amount of interest that would have accrued to the Lender on such principal amount for such period at the interest rate that the Lender would bid were it to bid, at the commencement of such period, for dollar deposits of a comparable amount and period from other banks in the interbank Eurodollar market. A certificate of the Lender setting forth any amount or amounts that the Lender is entitled to receive pursuant to this Section shall be delivered to the Borrower and shall be conclusive absent manifest error. The Lender shall submit written demand specifying in reasonable detail the events and circumstances resulting in such payment obligation, together with a certificate as to any amounts payable pursuant to this Section to the Borrower. The Borrower shall pay the Lender the amount shown as due on any such certificate within 30 days after receipt thereof.

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

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

(c) The Borrower shall indemnify the Lender, within 10 days after written demand therefor, for the full amount of any Indemnified Taxes or Other Taxes paid by the Lender on or with respect to any payment by or on account of any obligation of the Borrower hereunder (including Indemnified Taxes or Other Taxes imposed or asserted on or attributable to amounts payable under this Section) and any penalties, interest and reasonable expenses arising therefrom or with respect thereto, whether or not such Indemnified Taxes or Other Taxes were correctly or legally imposed or asserted by the relevant Governmental Authority. A certificate as to the amount of such payment or liability delivered to the Borrower by the Lender shall be conclusive absent manifest error.

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

(e) If the Lender is entitled to an exemption from or reduction of withholding tax under the law of the United States, or of the jurisdiction in which the Borrower is

located, or any treaty to which such jurisdiction is a party, with respect to payments under this Agreement, it shall deliver to the Borrower, at the time or times prescribed by applicable law, such properly completed and executed documentation prescribed by applicable law or reasonably requested by the Borrower as will permit such payments to be made without withholding or at a reduced rate.

(f) The Lender shall determine if, in its reasonable discretion, it has received a refund of any Taxes or Other Taxes as to which it has been indemnified by the Borrower or with respect to which a Borrower has paid additional amounts pursuant to this Section 2.8. If it determines that it has received any such refund, it shall pay over such refund to the Borrower (but only to the extent of indemnity payments made, or additional amounts paid, by the Borrower under this Section 2.8 with respect to the Taxes or Other Taxes giving rise to such refund), net of all out-of-pocket expenses of the Lender and without interest (other than any interest paid by the relevant Governmental Authority with respect to such refund); provided that the Borrower, upon the request of the Lender, agrees to repay the amount paid over to the Borrower (plus any penalties, interest or other charges imposed by the relevant Governmental Authority) to the Lender in the event the Lender is required to repay such refund to such Governmental Authority. This Section shall not be construed to require the Lender to make available its tax returns (or any other information relating to its taxes that it deems confidential) to the Borrower or any other Person.

3.1 Organization. Each Contango Entity (a) is duly organized, validly existing and in good standing under the Laws of the jurisdiction of its organization, (b) has the requisite power and authority to conduct its business in each jurisdiction in which its business is conducted and (c) is duly qualified or licensed to conduct business and is in good standing in each such jurisdiction except where any failure to be duly qualified or licensed or in good standing could not reasonably be expected to have a Material Adverse Effect.

3.2 Authority Relative to this Agreement. The Borrower and each Guarantor has the power and authority to execute and deliver this Agreement and the other Loan Documents to which it is a party and to perform its obligations hereunder and thereunder. The Transactions have been duly authorized by all necessary action on the part of the Borrower and each Guarantor. This Agreement and the other Loan Documents have been duly and validly executed and delivered by the Borrower and each Guarantor, to the extent a party thereto, and constitute its legal, valid and binding obligations enforceable against the Borrower and/or each such Guarantor, in accordance with their respective terms, subject to the effect of any applicable bankruptcy, insolvency, reorganization, moratorium or similar Laws affecting creditors’ rights and remedies generally and to the effect of general principles of equity (regardless of whether enforcement is considered in a proceeding at Law or in equity).

(b) result in the imposition of any Lien (other than in favor of Lender) on any Contango Entity;

(c) to the knowledge of Borrower, after due inquiry, result in, or constitute an event that would be, a breach, violation or default under any Governmental Approval held by, or relating to the business of any Contango Entity, in each case that could reasonably be expected to have a Material Adverse Effect;

(d) require any Contango Entity to obtain any consent, waiver, approval, exemption, authorization or other action of, or make any filing with or give any notice to, any Person except (i) such as have been obtained or made and are in full force and effect, (ii) the release and discharge of the Guaranty Bank Mortgage Documents as contemplated in Section 5.10, and (iii) consents, waivers, approvals, exemptions, authorizations, filings, notices and other actions the failure of which to obtain or make could not reasonably be expected to have a Material Adverse Effect; or

(e) violate any Law or Order applicable to any Contango Entity or by which its properties or assets may be bound, except where such violation could not reasonably be expected to result in a Material Adverse Effect.

3.4 Financial Condition. The audited consolidated balance sheet of the Borrower and its consolidated Subsidiaries at June 30, 2006, and the related audited consolidated statements of income, cash flows and stockholder’s equity for the fiscal year ended on such date, together with the related notes and schedules thereto, reported on by Grant Thornton LLP, and the unaudited balance sheet and statement of income for the Borrower and its consolidated Subsidiaries of the quarter ending September 30, 2006, copies of all of which have heretofore been furnished or made available to the Lender, were prepared in accordance with GAAP consistently applied throughout the periods presented and present fairly in all material respects the consolidated financial position of the Borrower and its consolidated Subsidiaries as of such date, and the consolidated results of their operations and their consolidated cash flows for the period then ended. Neither the Borrower nor any of its Subsidiaries have any material liability or obligation that is not disclosed in the foregoing financial statements or in the notes thereto. Since the date of such financial statements, there has been no development, circumstance or event that has had or could reasonably be expected to have a Material Adverse Effect.

3.5 Litigation. No litigation, investigation or proceeding of or before any arbitrator or Governmental Authority is pending or, to the knowledge of the Borrower, threatened by or against any Contango Entity or against any of their respective assets (a) with respect to any of the Loan Documents or any of the Transactions or (b) that could reasonably be expected to have a Material Adverse Effect.

3.6 No Default. No Contango Entity is in default under or with respect to any agreement to which it is a party that could reasonably be expected to have a Material Adverse Effect. Each Contango Entity is in compliance in all material respects with each covenant

applicable to it under the Loan Documents, and no Default has occurred and is continuing or would occur as a result of the execution and delivery of this Agreement and the Loan Documents.

3.7 Ownership of Property; Liens. The Company owns 100% of the outstanding Equity Interests of (a) Contango Operators, Inc., (b) Sundance, and Sundance owns 10% of the limited partnership interests of Freeport, (c) REX Offshore Corporation, and REX Offshore Corporation owns 42.70046% of the Equity Interests of Republic Exploration LLC, (d) COE Offshore, LLC, and COE Offshore, LLC owns 76.03379% of the Equity Interests of Contango Offshore Exploration LLC, (e) Contango Gas Solutions I, Inc., and Contango Gas Solutions I, Inc. owns a 1.0% general partner interest in Contango Gas Solutions, LP, a Texas limited partnership, and (f) Contango Gas Solutions II, Inc., and Contango Gas Solutions II, Inc. owns a 99.0% limited partner interest in Contango Gas Solutions, LP, a Texas limited partnership, (g) Contango STEP I, Inc., and Contango STEP I, Inc. owns a 1.0% general partner interest in Contango STEP, LP, a Texas limited partnership, and (h) Contango STEP II, Inc., and Contango STEP II, Inc. owns a 99.0% limited partner interest in Contango STEP, LP, a Texas limited partnership. Each Contango Entity has good and marketable title to all of its Oil and Gas Properties that are not personal property and good title to all such Oil and Gas Properties that are personal property and material to the Borrower and its Subsidiaries taken as a whole, except for the Guaranty Bank Mortgage Documents and such imperfections of title as do not in the aggregate materially detract from the value thereof to, or the use thereof in, the business of the Borrower and its Subsidiaries. The Borrower or one of its Subsidiaries is entitled to receive a decimal share of all hydrocarbons produced from, or allocated to, each property described in the most recent Reserve Report equal to not less than the net revenue interest set forth in such Reserve Report. There are no “back-in” or “reversionary” interests held by third parties that could materially reduce the interest of the Borrower and its Subsidiaries in such properties except as provided for in such Reserve Report.

3.8 Intellectual Property. Each Contango Entity owns, or is licensed to use, all trademarks, tradenames, copyrights, technology, know-how and processes necessary for the conduct of its business as currently conducted except for those the failure to own or license which could not reasonably be expected to have a Material Adverse Effect (the “Intellectual Property”). No claim has been asserted and is pending by any Person challenging or questioning the use of any such Intellectual Property or the validity or effectiveness of any such Intellectual Property which could reasonably be expected to have a Material Adverse Effect, nor does the Borrower know of any valid basis for any such claim which could reasonably be expected to have a Material Adverse Effect. The use of such Intellectual Property by each Contango Entity does not infringe on the rights of any Person, except for such claims and infringements that, in the aggregate, could not reasonably be expected to have a Material Adverse Effect.

3.9 Taxes. Each Contango Entity has filed all material tax returns that are required to be filed by it and has paid or caused to be paid all taxes shown on said returns and all assessments, fees and other governmental charges levied upon it or upon any of its property or income that are due and payable, other than such taxes, assessments, fees and other governmental charges, if any, as are being diligently contested in good faith and by appropriate proceedings and with respect to which there have been established adequate reserves on the books of the Borrower in accordance with GAAP. To the knowledge of the Borrower, no material tax lien has been filed, and no material claim is being asserted, with respect to any such taxes or assessments, fees or other governmental charges.

3.10 Federal Reserve Regulations. No part of the proceeds of the Loan will be used for “purchasing” or “carrying” any “margin stock” within the respective meanings of each of the quoted terms under Regulation U of the Board of Governors of the Federal Reserve System as now and from time to time hereafter in effect. If requested by the Lender, the Borrower shall furnish to the Lender a statement to the foregoing effect in conformity with the requirements of FR Form U-1 referred to in said Regulation U. The Loan and other transactions contemplated hereunder will not violate the provisions of Regulations T and X.

3.11 ERISA. No ERISA Event has occurred or is reasonably expected to occur that, when taken together with all other such ERISA Events for which liability is reasonably expected to occur, could reasonably be expected to result in a Material Adverse Effect. The present value of all accumulated benefit obligations under each Plan (based on the assumptions used for purposes of Statement of Financial Accounting Standards No. 87) did not, as of the date of the most recent financial statements reflecting such amounts, exceed the fair market value of the assets of such Plan.

3.12 Subsidiaries. The Persons listed on Schedule 3.12 constitute all of the Subsidiaries of the Borrower.

3.13 Environmental Matters. Except as set forth on Schedule 3.13, and other than exceptions to any of the following that could not, in the aggregate, reasonably be expected to give rise to a Material Adverse Effect or materially adversely affect the value of the Oil and Gas Properties of any Contango Entity taken as a whole:

(a) Each Contango Entity (i) is, and within the period of all applicable statutes of limitation has been in compliance with all applicable Environmental Laws; (ii) holds all Environmental Permits (each of which is in full force and effect) required for any of its current or planned operations or for any property owned, leased, or otherwise operated by it; and (iii) is, and within the period of all applicable statutes of limitation has been, in compliance with all of its Environmental Permits; and no officer of such Contango Entity has knowledge of any reason why its Environmental Permits will not timely be renewed or any new Environmental Permits will not timely be obtained subject to the conditions and terms that may be applied to them by the relevant Governmental Authorities.

(b) To the knowledge of the Borrower, after due inquiry, Hazardous Substances have not been transported, disposed of, emitted, discharged, or otherwise released or threatened to be released, to or at any real property presently or formerly owned, leased or operated by any Contango Entity or at any other location, which could reasonably be expected to (i) give rise to liability of any Contango Entity under any applicable Environmental Law or (ii) interfere with the continued operations of any Contango Entity.

(c) No judicial, administrative, or arbitral proceeding (including any notice of violation or alleged violation) under or relating to any Environmental Law to which any Contango Entity is, or to the knowledge of the Borrower will be, named as a party is pending or, to the knowledge of the Borrower threatened.

(d) No Contango Entity has received any written request for information, or been notified that it is a potentially responsible party under any Environmental Law, or with respect to any Hazardous Substances.

(e) No Contango Entity has entered into or agreed to any consent decree, order, or settlement, nor is subject to any judgment, decree, or order, in any judicial, administrative, arbitral, or other forum, relating to compliance with or liability under any Environmental Law.

(f) No Contango Entity has assumed or retained, by contract or operation of law, any liabilities of any kind, fixed, contingent or otherwise, under any Environmental Law other than in conformity with standard industry practice.

3.14 No Material Misstatements. All information, reports, financial statements, exhibits and schedules furnished to the Lender by or on behalf of the Borrower or any Guarantor in connection with the negotiation of any Loan Document or included therein or delivered pursuant thereto, when taken as a whole, did not contain any untrue statements of a material fact and did not omit to state any material fact necessary in order to make the statements contained therein, in the light of the circumstances under which they were made, not materially misleading. All projections and estimates concerning the Borrower and its Subsidiaries that are or have been made available to the Lender by or on behalf of the Borrower have been prepared based on good faith estimates and based upon assumptions believed by the Borrower to be reasonable in all material respects at the time of such preparation.

3.15 Insurance. Each Contango Entity carries and maintains with respect to its insurable properties insurance (including, to the extent consistent with past practices, self-insurance) with financially sound and reputable insurers of the types, to such extent and against such risks as is customary with companies in the same or similar businesses.

3.16 Future Commitments. Except as set forth on Schedule 3.16, on a net basis there are no material gas imbalances, material take-or-pay or other prepayments with respect to the Oil and Gas Properties of any Contango Entity (or, in the case of Oil and Gas Properties operated by operators other than a Contango Entity, to the Borrower’s knowledge after reasonable investigation) which would require such Contango Entity to deliver hydrocarbons produced from Oil and Gas Properties at some future time without then or thereafter receiving full payment therefor.

3.17 Security Documents. The provisions of the Pledge Agreements will be effective to grant to the Lender a legal, valid and enforceable lien and security interest in all of the right, title and interest of the Borrower and/or the applicable Guarantor in the collateral described therein and the proceeds thereof and, upon taking delivery of the stock certificates and membership unit certificates evidencing any pledged Equity Interests together with duly executed stock powers or otherwise obtaining control of such Equity Interests (with respect to any such Equity Interests that are certificated), or filing UCC-1 Financing Statements in respect

of such pledged Equity Interests with the Secretary of State of the State of Delaware (with respect to any such Equity Interests that are uncertificated) the Lender shall have a fully perfected first priority lien on, and security interest in, all right, title and interest of the Borrower and the applicable Guarantors in such collateral and the proceeds thereof, in each case prior and superior in right to any other Person.

3.18 Investment Company Status. No Contango Entity is an “investment company” as defined in, or subject to regulation under, the Investment Company Act of 1940, as amended.

4.1 Effective Date. The obligation of the Lender to make the initial advance on the Loan shall be subject to the satisfaction (or waiver in accordance with Section 8.2) of each of the following conditions:

(a) The Lender shall have received from the Borrower a counterpart of this Agreement signed on behalf of such party (which may include electronic transmission of a signed signature page of this Agreement);

(b) The Borrower shall have executed and delivered to the Lender the Note in the amount, maturity and as otherwise provided for herein;

(c) The Pledge Agreements shall have been executed and delivered to the Lender by the Borrower and the applicable Guarantors, and the Guarantors shall have executed and delivered to the Lender a Guaranty, guaranteeing the payment and performance of the obligations and indebtedness of the Borrower under this Agreement and the other Loan Documents;

(d) The Lender shall have received all certificates representing the initial Pledged Securities (as such term is defined in the Pledge Agreements), in each case accompanied by a stock power duly executed by the Borrower or the applicable Guarantor in blank;

(e) The Lender shall have received a certificate of a Financial Officer to the effect that (i) the representation and warranties of the Borrower set forth in Article 3 are true and correct in all material respects as of the Closing Date, except to the extent such representations and warranties expressly relate to an earlier date (in which case such representations and warranties shall be true and correct in all material respects as of such earlier date), (ii) no Default shall exist either before or after giving effect to the Transactions, and (iii) no Material Adverse Effect shall have occurred since September 30, 2006;

(f) The Lender shall have received a legal opinion of Morgan, Lewis & Bockius LLP, counsel for the Borrower and the Guarantors, in form and substance satisfactory to the Lender; and the Borrower and the Guarantors hereby request such counsel to deliver such opinions;

(g) The Lender shall have received such documents and certificates as the Lender or its counsel may reasonably request relating to the organization, existence and good standing of the Borrower and its Subsidiaries, the authorization of the Transactions, the authority of each natural Person executing any of the Loan Documents on behalf of the Borrower and any other legal matters relating to the Borrower, its Subsidiaries, this Agreement or the Transactions, all in form and substance reasonably satisfactory to the Lender and its counsel;

(h) The Lender shall have received all fees and other amounts due and payable on or prior to the Closing Date under this Agreement and any other Loan Document;

(i) The Lender shall have received reports of UCC, tax and judgment and other Lien searches conducted by a reputable search firm with respect to the Contango Entities in each location reasonably requested by the Lender and the information disclosed in such reports shall be reasonably satisfactory to the Lender;

(j) The Lender shall have received long form good standing certificates with respect to the Borrower and the Guarantors issued by the Secretary of State of the State of their respective formation or incorporation, and a certificate of authority to conduct business and a good standing certificate with respect to (i) Contango Operators, Inc. issued by the Secretary of State of Louisiana and (ii) Contango Gas Solutions II, Inc. and Contango STEP II, Inc., issued by the Secretary of State of Nevada;

(k) The Lender shall have reviewed certificates or binders evidencing the insurance coverage of the Borrower and its Subsidiaries;

(l) The Lender shall have received an executed copy of the fee letter of even date herewith between the Lender and the Borrower (the “Fee Letter”); and

(m) The Lender shall have received such other documents and certificates as the Lender or its counsel may reasonably request.

The obligation to make any advance of the Loan, including the initial advance, is subject to the further satisfaction of the following conditions:

(b) immediately before and after giving effect to such advance, no Default or Event of Default shall have occurred and be continuing and the making of such advance shall not cause a Default or Event of Default;

(c) the representations and warranties of Borrower and the Guarantors contained in this Agreement and the other Loan Documents shall be true and correct in all material respects on and as of the date of such advance, except to the extent such representations and warranties expressly relate to an earlier date (in which case such representations and warranties shall be true and correct in all material respects as of such earlier date); and

(d) following the making of such advance, the aggregate outstanding principal amount of the Loan shall not exceed $10,000,000 unless the Incremental Funding Event has occurred.

(e) Lender shall have received a certificate from a Financial Officer to the effect that (i) attached to such certificate is a true and complete copy of the most recent Reserve Report (as defined in the RBS Loan Agreement) prepared by the Independent Engineer (as defined in the RBS Loan Agreement) and delivered to the lender under such RBS Loan Agreement, (ii) after giving effect to such advance, no default, event of default or non-compliance with the terms of the RBS Loan Agreement will exist, and (iii) setting forth in reasonable detail the calculations demonstrating compliance with Section 6.1(b) of the RBS Loan Agreement based on the reserves and other information set forth in such Reserve Report.

Each advance of the Loan hereunder shall constitute a representation and warranty by Borrower that on the date of such advance the statements contained in subclauses (b), (c), and (d) above and the certificate referenced in subclause (e) above are true.

Until the principal of and interest on the Loan and all other amounts owing by Borrower to Lender hereunder and under the other Loan Documents shall have been paid in full, the Borrower covenants and agrees with the Lender as follows:

5.1 Financial Statements; Other Information. The Borrower shall furnish to the Lender:

(a) within 90 days after the end of each fiscal year of the Borrower, its audited consolidated balance sheet and related statements of income, shareholders’ equity and cash flows as of the end of and for such year, setting forth in reasonable detail, in each case in comparative form the figures for the previous fiscal year, all reported on by Grant Thornton LLP or other independent public accountants of recognized national standing (without a “going concern” or like qualification or exception and without any qualification or exception as to the scope of such audit) to the effect that such consolidated financial statements present fairly in all material respects the financial condition and results of operations of the Borrower and its consolidated Subsidiaries on a consolidated basis in accordance with GAAP consistently applied, in each case, as of the date indicated;

(b) within 45 days after the end of each of the first three fiscal quarters of each fiscal year of the Borrower, its consolidated balance sheet and related statements of income and cash flows as of the end of and for such fiscal quarter and the then elapsed portion of the fiscal year, setting forth in each case in comparative form the figures for

the corresponding period or periods of (or, in the case of the balance sheet, as of the end of) the previous fiscal year, all certified by one of its Financial Officers as presenting fairly in all material respects the financial condition and results of operations of the Borrower and its consolidated Subsidiaries on a consolidated basis in accordance with GAAP consistently applied, in each case as of the date indicated, subject to normal year-end audit adjustments and the absence of footnotes;

(c) concurrently with any delivery of financial statements under clause (a) or (b) above, a certificate of a Financial Officer of the Borrower (i) certifying as to whether a Default has occurred and, if a Default has occurred, specifying the details thereof and any action taken or proposed to be taken with respect thereto, (ii) setting forth reasonably detailed calculations demonstrating compliance with Section 6.13 and Section 6.15 and (iii) stating whether any change in GAAP or in the application thereof has occurred since the date of the last audited financial statements delivered pursuant to Section 5.1(a) and, if any such change has occurred, specifying the effect of such change on the financial statements accompanying such certificate;

(d) promptly after the same become available, notice of the filing of (i) all periodic and other reports, proxy statements and other materials filed by the Borrower or any Subsidiary with the Securities and Exchange Commission or with any national securities exchange, or distributed by the Borrower to its shareholders generally, as the case may be, and (ii) all press releases and other statements made available generally by the Borrower or any of its Subsidiaries to the public concerning material developments in the business of the Borrower or any of its Subsidiaries;

(e) promptly upon receipt of any complaint, order, citation, notice or other written communication from any Person with respect to, or upon the Borrower obtaining knowledge of, (i) the existence or alleged existence of a violation of any applicable Environmental Law or any liability arising under Environmental Laws in connection with any property now or previously owned, leased or operated by the Borrower or any of its Subsidiaries, (ii) any release of Hazardous Substances on such property or any part thereof in a quantity that is reportable under any applicable Environmental Law, and (iii) any pending or threatened proceeding for the termination, suspension or non-renewal of any permit required under any applicable Environmental Law, in each case in which there is a reasonable likelihood of an adverse decision or determination that could result in a Material Adverse Effect. Such notice shall contain a certificate of an executive officer of Borrower, setting forth, in reasonable detail, such matter and the actions, if any, that Borrower or such applicable Subsidiary is required or proposes to take;

(f) promptly following any request therefor, such other information regarding the operations, business affairs and financial condition of the Borrower or any Subsidiary, or compliance with the terms of this Agreement, as the Lender may reasonably request;

(g) promptly upon receipt thereof, copies of all reports and comment letters from its independent public accountants to the Borrower or any of its Subsidiaries, their respective Boards of Directors (or equivalent governing body) or any committee thereof with respect to the financial statements described in Section 5.1(a);

(h) within 120 days after the end of each fiscal year, the Borrower will make available to the Lender material reasonably satisfactory to the Lender describing all material insurance coverage maintained by the Borrower and its Subsidiaries as of the date of such report;

(i) prior to September 30 of each year, a copy of the Reserve Report prepared in connection with the Borrower’s preparation and filing of its annual report on SEC Form 10-K;

(j) copies of any reserve reports prepared by the Borrower or its Independent Engineer and submitted to the Borrower’s then current hydrocarbon borrowing base lending bank promptly following such submission; and

(k) within 10 days of the execution by all parties of any amendment to any of the Project Documents, a copy of said amendment or said Project Document, as amended.

5.2 Notices of Material Events. The Borrower shall furnish to the Lender promptly, and, in any event, within five Business Days, written notice of the following:

(b) the filing or commencement of any action, suit or proceeding by or before any arbitrator or Governmental Authority against or affecting the Borrower or any Subsidiary thereof that, if adversely determined, could reasonably be expected to result in a Material Adverse Effect or that in any manner questions the validity of the Loan Documents;

(c) the occurrence of any ERISA Event that, alone or together with any other ERISA Events that have occurred, could reasonably be expected to result in liability of the Borrower and its Subsidiaries in an aggregate amount exceeding $100,000;

(d) any default by the Borrower or any of its Subsidiaries of which the borrower has knowledge under any material contract, together with a description of the nature of such default and any action taken or proposed to be taken with respect to such default; and

(e) any other development that results in, or could reasonably be expected to result in, a Material Adverse Effect.

Each notice delivered under this Section shall be accompanied by a statement of a Financial Officer or other executive officer of the Borrower setting forth the details of the event or development requiring such notice and any action taken or proposed to be taken with respect thereto.

5.3 Existence; Conduct of Business. The Borrower shall (a) preserve and maintain its legal existence and the rights, licenses, permits, privileges and franchises material to the conduct of its business except where the failure to do so could not reasonably be expected to result in a Material Adverse Effect and (b) cause each of its Subsidiaries to preserve and maintain its legal

existence and the rights, licenses, permits, privileges and franchises material to the conduct of its business; provided that the foregoing shall not prohibit any merger, consolidation, liquidation or dissolution permitted under Section 6.3.

5.4 Payment of Obligations. The Borrower shall pay its obligations, including Tax liabilities, before the same shall become delinquent or in default, except where (a) the validity or amount thereof is being contested in good faith by appropriate proceedings, (b) the Borrower has set aside on its books adequate reserves with respect thereto in accordance with its method of accounting and (c) the failure to make payment pending such contest could not reasonably be expected to result in a Material Adverse Effect. The Borrower shall cause each of its Subsidiaries to pay its obligations, including Tax liabilities, before the same shall become delinquent or in default, except where (a) the validity or amount thereof is being contested in good faith by appropriate proceedings, (b) such Subsidiary has set aside on its books adequate reserves with respect thereto in accordance with its method of accounting and (c) the failure to make payment pending such contest could not reasonably be expected to result in a Material Adverse Effect.

5.5 Maintenance of Properties; Insurance. The Borrower shall, and shall cause each of its Subsidiaries to (a) maintain all property material to the conduct of its business in good working order and condition, in accordance with industry practice, ordinary wear and tear excepted, and (b) maintain, with financially sound and reputable insurance companies, insurance in such amounts and against such risks as are customarily maintained by similarly situated companies engaged in the same or similar businesses operating in the same or similar locations, which insurance shall name Lender, as “additional insured” and as a “loss payee”, as applicable.

5.6 Books and Records; Inspection Rights. The Borrower shall, and shall cause each of its Subsidiaries to keep proper books of record and account in which full, true and correct entries are made of all dealings and transactions in relation to its business and activities. The Borrower shall, and shall cause each of its Subsidiaries to permit any representatives designated by the Lender, upon reasonable prior notice, to visit and inspect its properties, to examine and make extracts from its books and records, and to discuss its affairs, finances and condition with its officers and independent accountants, all at such reasonable times and as often as reasonably requested. The Lender shall pay its out-of-pocket expenses incurred with respect to such visits, inspections, examinations, extracts and discussions except during the existence of an Event of Default, in which event the Borrower shall be responsible for such costs reasonably incurred by the Lender.

5.7 Compliance with Laws. The Borrower shall, and shall cause each of its Subsidiaries to, comply with all Laws and Orders applicable to it or its property, except where the failure to do so, individually or in the aggregate, could not reasonably be expected to result in a Material Adverse Effect.

5.8 Ownership of Certain Subsidiaries. The Borrower shall at all times own 100% of the outstanding Equity Interests of (a) Contango Operators, Inc., (b) Sundance, and Sundance shall at all times own not less than 10% of the limited partnership interests of Freeport, (c) REX Offshore Corporation, and REX Offshore Corporation shall at all times own not less than 42.70046% of the Equity Interests of Republic Exploration LLC, (d) COE Offshore, LLC, and COE Offshore, LLC shall at all times own not less than 76.03379% of the Equity Interests of

Contango Offshore Exploration, LLC, (e) Contango Gas Solutions I, Inc., and Contango Gas Solutions I, Inc. shall at all times own a 1.0% general partner interest in Contango Gas Solutions, LP, a Texas limited partnership, (f) Contango Gas Solutions II, Inc., and Contango Gas Solutions II, Inc. shall at all times own a 99.0% limited partner interest in Contango Gas Solutions, LP, a Texas limited partnership, (g) Contango STEP I, Inc., and Contango STEP I, Inc. shall at all times own a 1.0% general partner interest in Contango STEP, LP, a Texas limited partnership, and (h) Contango STEP II, Inc., and Contango STEP II, Inc. shall at all times own a 99.0% limited partner interest in Contango STEP, LP, a Texas limited partnership.

5.9 Use of Proceeds. The Borrower shall use the proceeds of the Loan for the exploration, development and/or acquisition of Oil and Gas Properties, for further investment in seismic acquisitions and to make other Investments which are otherwise permitted under Section 6.5, and for other general working capital purposes, and shall not use any of such proceeds for any purpose that would violate any of the regulations of the Board of Governors, including Regulations T, U and X.

Promptly upon the request of Lender, from time to time, Borrower shall (a) cause any additional properties or assets of any Contango Entity (other than Sundance) to be subject to perfected, first priority Liens in favor of Lender to secure the obligations and indebtedness of Borrower hereunder pursuant to mortgages, security agreements, pledge agreements and other collateral documents as may be satisfactory to Lender in its sole discretion, and (b) cause any Subsidiary (other than Sundance and its Subsidiaries), whether currently existing, direct or indirect, which is not currently a Guarantor, to execute a Guaranty. Within thirty (30) days after the Closing Date, Borrower shall cause all Liens under that certain Mortgage, Deed of Trust, Security Agreement, Financing Statement and Assignment of Production dated effective as of January 8, 2002 from Contango Oil and Gas Company for the benefit of Guaranty Bank, FSB (as modified, supplemented or amended, herein referred to as the “Guaranty Bank Mortgage”), and any financing statements or other documents, instruments and agreements executed and delivered in connection therewith or relating thereto (collectively with the Guaranty Bank Mortgage herein referred to as the “Guaranty Bank Mortgage Documents”), to be released and discharged of record in each jurisdiction in which such Guaranty Bank Mortgage Documents have been filed, pursuant to lien releases, termination statements and other documents and agreements in form and substance satisfactory to Lender.

Until the principal of and interest on the Loan shall have been paid in full, the Borrower covenants and agrees with the Lender as follows:

6.1 Debt. The Borrower shall not, and shall not permit any of its Subsidiaries to create, incur, assume or permit to exist any Debt, except:

(a) All Debt existing as of the Closing Date and listed on Schedule 6.1 attached hereto;

(c) Other Debt not to exceed, in the aggregate for all such other Debt at any time outstanding an amount equal to $1,000,000.

6.2 Liens. The Borrower shall not and shall not permit any of its Subsidiaries to, create, incur, assume or permit to exist any Lien on any of its assets or properties now owned or hereafter acquired, except for:

(a) Liens securing the obligations and indebtedness of Borrower hereunder and under the other Loan Documents;

(b) All Liens existing as of the Closing Date and listed on Schedule 6.2 attached hereto;

(d) Liens on the Equity Interests of Sundance granted to secure the indebtedness under that certain Term Loan Agreement dated as of April 27, 2006 between Borrower and The Royal Bank of Scotland plc (the “RBS Loan Agreement”).

6.3 Fundamental Changes. The Borrower shall not, and shall not permit any of its Subsidiaries to merge into or consolidate with any other Person, or liquidate or dissolve, except that (a) any Guarantor may merge with or into Borrower or another Guarantor, and (b) any Subsidiary which is not a Guarantor may be liquidated or dissolved or may merge with any other Subsidiary which is not a Guarantor.

6.4 Disposition of Assets. The Borrower shall not, and shall not permit any of its Subsidiaries to sell, lease, transfer, abandon, assign or otherwise dispose of any of its properties or assets except for (a) sales of inventory in the ordinary course of business, (b) sales of worn out or obsolete equipment or other property no longer used or useful in its business, and (c) other dispositions of assets (other than Collateral) with an aggregate value not to exceed $5,000,000 during any fiscal year.

6.5 Investments. The Borrower will not, and will not allow any of its Subsidiaries to make an Investment in any other Person, except:

(b) Investments existing on the date hereof and described on Schedule 6.5 attached hereto;

(c) Investments by (i) any Subsidiary in Borrower, (ii) Borrower in any Guarantor or by any Guarantor in any other Guarantor;

(d) Investments consisting of extensions of credit, prepayments, security deposits or similar transactions entered into in the ordinary course of business consistent with past practice, and Investments received in satisfaction or partial satisfaction thereof from financially troubled account debtors to the extent reasonably necessary in order to prevent or limit loss;

(e) additional Investments from and after the Closing Date by REX Offshore Corporation in Republic Exploration LLC not to exceed in the aggregate $5,000,000 during any fiscal year;

(f) additional Investments from and after the Closing Date by COE Offshore, LLC in Contango Offshore Exploration, LLC not to exceed in the aggregate $5,000,000 during any fiscal year;

(g) additional Investments from and after the Closing Date by Borrower in Sundance, the proceeds of which shall in turn be used by Sundance to make additional Investments in Freeport not to exceed in the aggregate the amount necessary to comply with the obligations and commitments of Sundance under the Project Documents as in effect on the Closing Date; and

(h) other Investments not to exceed in the aggregate $1,000,000 during any fiscal year.

6.6 Restricted Payments. The Borrower shall not, and shall not permit any of its Subsidiaries to, declare or make, or agree to pay or make, directly or indirectly, any Restricted Payment, except:

(a) the Borrower may declare and make distributions with respect to its Equity Interests payable solely in additional Equity Interests;

(b) any Subsidiary of the Borrower may make a Restricted Payment to the Borrower or any Guarantor; and

(c) if no Default has occurred and is continuing, the Borrower may (i) declare and pay dividends with respect to any of its Preferred Stock in an amount not to exceed, in the aggregate, $1,500,000 during any fiscal year, and (ii) repurchase up to a maximum of $500,000 of its Equity Interests consisting of common stock in the aggregate for all such repurchases during the term hereof.

6.7 Transactions with Affiliates. The Borrower will not, and will not permit any of its Subsidiaries to sell, lease or otherwise transfer any property or assets to, or purchase, lease or otherwise acquire any property or assets from, or otherwise engage in any other transactions with, any holder of 10% or more of its equity securities or any of its Affiliates, except:

(a) in the ordinary course of business at prices and on terms and conditions not less favorable to the Borrower or such Subsidiary than could be obtained on an arm’s-length basis from unrelated third parties;

(b) any Restricted Payment permitted by Section 6.6 or as otherwise permitted hereunder;

(c) indemnities in favor of any officer of the Borrower pursuant to the Organizational Documents of the Borrower or statutory provisions;

(d) any reasonable employee benefit or compensation plan or arrangement or any reasonable transaction pursuant to an employment contract; or

(e) transactions between or among the Borrower and its Subsidiaries which are otherwise permitted by this Agreement.

6.8 Restrictive Agreements. The Borrower shall not, and shall not permit any Subsidiary to, directly or indirectly, enter into, incur or permit to exist any agreement or other arrangement that prohibits, restricts or imposes any condition upon the ability of any Subsidiary to make any Restricted Payments to or Investments in Borrower or any Guarantor, or create, incur or permit to exist any Lien in favor of Lender upon any of its property or assets; provided that (a) the foregoing shall not apply to restrictions and conditions imposed by Law or by this Agreement, (b) the foregoing shall not apply to restrictions or conditions existing on the date hereof contained in the RBS Loan Agreement or any of the Project Documents (but shall apply to any extension or renewal of, or any amendment or modification expanding the scope of, any such restriction or condition), and (c) the foregoing shall not apply to customary provisions in leases and other contracts restricting the assignment thereof.

6.9 Business Acquisitions. The Borrower shall not, and shall not permit any Subsidiary to make any Business Acquisitions unless (a) any Subsidiary acquired or formed in connection with such Business Acquisition shall have guaranteed the obligations and indebtedness of the Borrower hereunder pursuant to a Guaranty, and (b) all of the Equity Interests of, and substantially all of the assets of any such newly acquired or formed Subsidiary shall be subject to Liens in favor of the Lender to secure the Borrower’s obligations and indebtedness hereunder pursuant to mortgages, security agreements and other collateral documentation satisfactory to Lender.

6.10 Organizational Documents. The Borrower shall not, and shall not permit and of its Subsidiaries to, amend its Organizational Documents in any manner that would adversely and materially affect the rights of the Lender under this Agreement or any other Loan Document or its ability to enforce the same.

6.11 Nature of Business. The Borrower and its Subsidiaries shall not engage in any business other than those in which they are currently engaged and any other business reasonably related thereto.

6.12 Accounting Changes. The Borrower shall not change the end of its fiscal year from its current date of June 30^th or make any changes in its accounting treatment and reporting practices except as required or permitted in accordance with its method of accounting.

6.13 Working Capital. The Borrower shall not, as at the end of any fiscal quarter, permit the current assets of the Borrower and its Subsidiaries, plus any unused availability for advances under this Agreement, to be less than the current liabilities of the Borrower and its Subsidiaries.

6.14 Freeport Organizational Documents. The Borrower shall not permit Sundance to consent to any amendment, modification or supplement to the Partnership Agreement or any of the Project Documents that could reasonably be expected to have a Material Adverse Effect.

6.15 Debt Coverage. The Borrower shall not permit the total aggregate Debt of the Borrower and its Subsidiaries (other than the outstanding principal amount of Debt under the RBS Loan Agreement) to exceed the lesser of (a) 100% of the PV-9 Value of the Producing Reserves and (b) 70% of the PV-9 Value of the Proved Reserves, at any time from and after June 30, 2007.

6.16 RBS Loan Agreement. The Borrower shall not, and shall not permit any of its Subsidiaries to (i) amend, waive or modify any term or provision of the RBS Loan Agreement or any promissory notes, security documents or other documents, instruments or agreements entered into in connection therewith or relating thereto (collectively, the “RBS Loan Documents”) if the effect of any such amendment, waiver or modification is to make the terms of any RBS Loan Document more onerous to the Borrower or any of its Subsidiaries or to subject the Borrower or any of its Subsidiaries to any additional material obligation thereunder, or (ii) make any voluntary prepayment of, or optionally redeem, or make any payment in defeasance of, any part of the obligations and indebtedness of Borrower and its Subsidiaries under the RBS Loan Agreement and the other RBS Loan Documents.

7.1 Events of Default. If any of the following events (“Events of Default”) shall occur:

(a) the Borrower shall fail to pay any principal of the Loan when and as the same shall become due and payable, whether at the due date thereof or at a date fixed for prepayment thereof or otherwise;

(b) the Borrower shall fail to pay any interest on the Loan or any other amount (other than an amount referred to in clause (a) of this Section 7.1) payable under this Agreement or the other Loan Documents, when and as the same shall become due and payable, and such failure shall continue unremedied for a period of five days;

(c) any representation or warranty made or deemed made by or on behalf of the Borrower or any Guarantor in or in connection with this Agreement or any amendment or modification hereof or waiver hereunder, or in any report, certificate, financial statement, Loan Document or other document furnished pursuant to or in connection with this Agreement or any amendment or modification thereof or waiver thereunder, shall prove to have been incorrect in any material respect when made or deemed made;

(d) the Borrower shall fail to observe or perform any covenant, condition or agreement contained in Section 5.5 or in Article 6, and such failure shall continue unremediated for a period of five days;

(e) the Borrower or any Guarantor shall fail to observe or perform any covenant, condition or agreement contained in this Agreement (other than those specified in clause (a), (b) or (d) of this Section 7.1) or in any other Loan Document to which it is a party, and such failure shall continue unremedied for a period of 30 days;

(f) the Borrower or any of its Subsidiaries shall fail to make any payment (whether of principal or interest) in respect of any Material Debt, when and as the same shall become due and payable or within any applicable grace period;

(g) any event or condition occurs that results in any Material Debt becoming due prior to its scheduled maturity or that enables or permits (with or without the giving of notice, the lapse of time or both) the holder or holders of any Material Debt or any trustee or agent on its or their behalf to cause any Material Debt to become due, or to require the prepayment, repurchase, redemption or defeasance thereof, prior to its scheduled maturity; provided that this clause (g) shall not apply to secured Debt that becomes due as a result of the voluntary sale or transfer of the property or assets securing such Debt;

(h) an involuntary proceeding shall be commenced or an involuntary petition shall be filed seeking (i) liquidation, reorganization or other relief in respect of the Borrower or any of its Subsidiaries or its debts, or of a substantial part of its assets, under any Federal, state or foreign bankruptcy, insolvency, receivership or similar law now or hereafter in effect or (ii) the appointment of a receiver, trustee, custodian, sequestrator, conservator or similar official for the Borrower or any of its Subsidiaries or for a substantial part of its assets, and, in any such case, such proceeding or petition shall continue undismissed for 60 days or an order or decree approving or ordering any of the foregoing shall be entered;

(i) the Borrower or any of its Subsidiaries shall (i) voluntarily commence any proceeding or file any petition seeking liquidation, reorganization or other relief under any Federal, state or foreign bankruptcy, insolvency, receivership or similar law now or hereafter in effect, (ii) consent to the institution of, or fail to contest in a timely and appropriate manner, any proceeding or petition described in clause (h) of this Section 7.1, (iii) apply for or consent to the appointment of a receiver, trustee, custodian, sequestrator, conservator or similar official for the Borrower or for a substantial part of its assets, (iv) file an answer admitting the material allegations of a petition filed against it in any such proceeding, (v) make a general assignment for the benefit of creditors or (vi) take any action for the purpose of effecting any of the foregoing;

(j) the Borrower or any of its Subsidiaries shall become unable, admit in writing its inability or fail generally to pay its debts as they become due;

(k) one or more judgments for the payment of money in an aggregate amount in excess of $100,000 shall be rendered against the Borrower or any of its Subsidiaries and the same shall remain undischarged for a period of 60 consecutive days during which execution shall not be effectively stayed, or any action shall be legally taken by a judgment creditor to attach or levy upon any assets of the Borrower or any of its Subsidiaries to enforce any such judgment;

(l) an ERISA Event shall have occurred that, in the opinion of the Lender, when taken together with all other ERISA Events that have occurred, could reasonably be expected to result in a Material Adverse Effect; or

then, and in every such event, and at any time thereafter during the continuance of such event, the Lender may, by notice to the Borrower, take any or all of the following actions, at the same or different times: (i) declare the Loan then outstanding to be due and payable in whole (or in part, in which case any principal not so declared to be due and payable may thereafter be declared to be due and payable), and thereupon the principal of the Loan so declared to be due and payable, together with accrued interest thereon and all fees and other obligations of the Borrower accrued hereunder, shall become due and payable immediately, without presentment, demand, protest or other notice of any kind, all of which are hereby waived by the Borrower; provided, however, that in case of any event with respect to the Borrower described in Section 7.1(h) or Section 7.1(i), the principal of the Loan then outstanding, together with accrued interest thereon and all fees and other obligations of the Borrower accrued hereunder, shall automatically become due and payable, without presentment, demand, protest or other notice of any kind, all of which are hereby waived by the Borrower, and (ii) exercise any or all of the remedies available to it under any of the Loan Documents, at Law or in equity.

(a) Except in the case of notices and other communications expressly permitted to be given by telephone (and subject to paragraph (b) below), all notices and other communications provided for herein shall be in writing and shall be delivered by hand or overnight courier service, mailed by certified or registered mail or sent by telecopy, as follows:

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

8.2 Amendments; Waivers. Neither this Agreement nor any provision hereof may be waived, amended or modified except pursuant to an agreement or agreements in writing entered into by the Borrower and the Lender. No failure or delay by the Lender in exercising any right or power hereunder shall operate as a waiver thereof, nor shall any single or partial exercise of any such right or power, or any abandonment or discontinuance of steps to enforce such a right or power, preclude any other or further exercise thereof or the exercise of any other right or power. The rights and remedies of the Lender hereunder are cumulative and are not exclusive of any rights or remedies that it would otherwise have. No waiver of any provision of this Agreement or consent to any departure by the Borrower therefrom shall in any event be effective unless the same shall be permitted by this Section, and then such waiver or consent shall be effective only in the specific instance and for the purpose for which given. Without limiting the generality of the foregoing, the making of the Loan shall not be construed as a waiver of any Default, regardless of whether the Lender may have had notice or knowledge of such Default at the time.

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

8.4 Survival. All covenants, agreements, representations and warranties made by the Borrower herein and in the certificates or other instruments delivered in connection with or pursuant to this Agreement shall be considered to have been relied upon by the other parties hereto and shall survive the execution and delivery of this Agreement and the making of the Loan, regardless of any investigation made by any such other party or on its behalf and notwithstanding that the Lender may have had notice or knowledge of any Default or incorrect representation or warranty at the time any credit is extended hereunder, and shall continue in full force and effect as long as the principal of or any accrued interest on the Loan or any other amount payable under this Agreement is outstanding and unpaid.

8.5 Counterparts. This Agreement may be executed in counterparts and may be delivered in original or facsimile form (and by different parties hereto on different counterparts), each of which shall constitute an original, but all of which when taken together shall constitute a single contract.

(a) The Borrower shall pay (i) all reasonable out-of-pocket costs and expenses (including, without limitation, Uniform Commercial Code and lien search fees and charges, fees and expenses associated with corporate record searches and governmental certificates regarding the status of the Contango Entities, other filing fees, mortgage or stamp taxes, in each case whether incurred directly by the Lender or by its legal counsel or other agent or representative on behalf of the Lender, but excluding, however, any fees of Lender’s legal counsel for services rendered), in connection with the preparation, negotiation, execution, delivery and administration of this Agreement and the other Loan Documents, and (ii) all reasonable out-of-pocket expenses incurred by the Lender, including the fees, charges and disbursements of one primary law firm as counsel, local counsel as needed and consultants for the Lender, in the enforcement or protection of its rights in connection with this Agreement and the other Loan Documents, including its rights under this Section, or in connection with the Loan made hereunder, including all such out-of-pocket expenses incurred during any workout, restructuring or negotiations in respect of the Loan.

(b) The Borrower shall and hereby does indemnify the Lender, it Affiliates and the directors, officers, managers, employees, agents and representatives of any of the foregoing Persons (each such Person being called an “Indemnitee”) against, and hold each Indemnitee harmless from, any and all losses, claims, damages, liabilities and related expenses, including the reasonable fees, charges and disbursements of any

counsel for any Indemnitee, incurred by or asserted against any Indemnitee arising out of, in connection with, or as a result of (i) the execution or delivery of this Agreement or any agreement or instrument contemplated hereby, the performance by the parties hereto of their respective obligations hereunder or the consummation of the Transactions or any other transactions contemplated hereby, (ii) the Loan or the use of the proceeds therefrom, (iii) any actual or alleged presence or release of Hazardous Substance on or from any real property owned or operated by the Borrower or any of its Subsidiaries, or any liability arising under Environmental Laws related in any way to the Borrower or any of its Subsidiaries, or (iv) any claim, litigation, investigation or proceeding relating to any of the foregoing, whether based on contract, tort or any other theory and regardless of whether any Indemnitee is a party thereto, including any such loss, claim, damage or liability caused by the negligence of any Indemnitee; provided that such indemnity shall not, as to any Indemnitee, be available to the extent that such losses, claims, damages, liabilities or related expenses are determined by a court of competent jurisdiction by final and nonappealable judgment to have resulted from the gross negligence or willful misconduct of such Indemnitee.

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

(d) All amounts due under this Section shall be payable promptly after receipt of a request therefor by the Borrower.

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

(a) THIS AGREEMENT AND THE OTHER LOAN DOCUMENTS SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAW OF THE STATE OF NEW YORK WITHOUT REGARD TO ANY CHOICE-OF-LAW PROVISIONS THAT WOULD REQUIRE THE APPLICATION OF THE LAW OF ANOTHER JURISDICTION.

(b) EXCEPT TO THE EXTENT REQUIRED FOR THE EXERCISE OF THE REMEDIES PROVIDED IN THE OTHER LOAN DOCUMENTS, BORROWER HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY LAW, ANY OBJECTION WHICH IT MAY NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY LITIGATION (DEFINED BELOW) ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT OR ANY OF THE LOAN

DOCUMENTS BROUGHT IN DISTRICT COURTS OF HARRIS COUNTY, TEXAS, OR IN THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF TEXAS, HOUSTON DIVISION.

(c) BORROWER HEREBY IRREVOCABLY CONSENTS TO THE SERVICE OF PROCESS OUT OF ANY OF THE AFOREMENTIONED COURTS IN ANY SUCH LITIGATION BY THE MAILING OF COPIES THEREOF BY CERTIFIED MAIL, RETURN RECEIPT REQUESTED, POSTAGE PREPAID, TO BORROWER’S OFFICE. NOTHING HEREIN SHALL AFFECT THE RIGHTS OF LENDER TO COMMENCE LEGAL PROCEEDINGS OR OTHERWISE PROCEED AGAINST BORROWER IN ANY JURISDICTION OR TO SERVE PROCESS IN ANY MANNER PERMITTED BY APPLICABLE LAW. TO THE EXTENT THAT BORROWER HAS OR HEREAFTER MAY ACQUIRE ANY IMMUNITY FROM JURISDICTION OF ANY COURT OR FROM ANY LEGAL PROCESS (WHETHER THROUGH SERVICE OR NOTICE, ATTACHMENT PRIOR TO JUDGMENT, ATTACHMENT IN AID OF EXECUTION, EXECUTION OR OTHERWISE) WITH RESPECT TO ITSELF OR ITS PROPERTY, BORROWER HEREBY IRREVOCABLY WAIVES SUCH IMMUNITY IN RESPECT OF ITS OBLIGATIONS UNDER THIS AGREEMENT AND THE OTHER LOAN DOCUMENTS. AS USED HEREIN, THE TERM “LITIGATION” MEANS ANY PROCEEDING, CLAIM, LAWSUIT OR INVESTIGATION (I) CONDUCTED OR THREATENED BY OR BEFORE ANY COURT OR GOVERNMENTAL DEPARTMENT, COMMISSION, BOARD, BUREAU, AGENCY OR INSTRUMENTALITY OF THE UNITED STATES OR OF ANY STATE, COMMONWEALTH, NATION, TERRITORY, POSSESSION, COUNTY, PARISH, OR MUNICIPALITY, WHETHER NOW OR HEREAFTER CONSTITUTED OR EXISTING, OR (II) PENDING BEFORE ANY PUBLIC OR PRIVATE ARBITRATION BOARD OR PANEL.

8.9 WAIVER OF JURY TRIAL. EACH PARTY HERETO HEREBY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY (WHETHER BASED ON CONTRACT, TORT OR ANY OTHER THEORY). EACH PARTY HERETO (A) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER AND (B) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION.

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

8.11 Confidentiality. The Lender shall maintain the confidentiality of the Information (as defined below), except that Information may be disclosed:

(a) to its and its Affiliates’ directors, officers, managers, employees and agents, including accountants, legal counsel and other advisors (it being understood that the Persons to whom such disclosure is made will be informed of the confidential nature of such Information and instructed to keep such Information confidential);

(e) in connection with the exercise of any remedies hereunder or any suit, action or proceeding relating to this Agreement or the enforcement of rights hereunder;

(f) subject to an agreement containing provisions substantially the same as those of this Section, to any assignee of, or any prospective assignee of, any of its rights or obligations under this Agreement;

(h) to the extent such Information (i) becomes publicly available other than as a result of a breach of this Section or (ii) becomes available to the Lender on a nonconfidential basis from a source other than the Borrower.

For the purposes of this Section, “Information” means all information received from the Borrower relating to the Borrower or its business, other than any such information that is available to the Lender on a nonconfidential basis prior to disclosure by the Borrower; provided, in the case of information received from the Borrower after the date hereof, such information is clearly identified at the time of delivery as confidential. Any Person required to maintain the confidentiality of Information as provided in this Section shall be considered to have complied with its obligation to do so if such Person has exercised the same degree of care to maintain the confidentiality of such Information as such Person would accord to its own confidential information.

8.12 Usury Savings Clause. The Borrower and the Lender intend to contract in strict compliance with all applicable usury laws from time to time in effect, and no term or provision contained in this Agreement or any other document or instrument now or hereafter executed in connection herewith shall ever create (or ever be construed to create) a contract to pay for the use, forbearance or detention of money with interest at a rate in excess of the maximum nonusurious rate of interest that the Lender is permitted to contract for, charge or receive under applicable law and as to which the Borrower could not successfully assert a claim or defense of usury (the “Maximum Rate”). For purposes hereof, “interest” shall include the aggregate of all charges that constitute interest under applicable law that are contracted for, reserved, taken, charged or received under or in connection with this Agreement. If the payment of any amounts due hereunder is accelerated by reason of any election of the Lender resulting from the occurrence of an Event of Default or otherwise, then any consideration constituting interest may never include more than the maximum nonusurious amount permitted by applicable law, and

excess interest, if any, provided for in or in connection with this Agreement shall be canceled automatically as of the date of such acceleration, and, if theretofore paid, shall be credited on the principal balance due and the balance thereof, if any, refunded to the Borrower. If the Lender shall collect, charge, contract for or receive moneys that are interest and/or are deemed to constitute interest at a rate in excess of the Maximum Rate, all such sums in excess of the Maximum Rate shall be immediately credited against the outstanding principal balance, and the balance thereof, if any, returned to the Borrower upon such determination. All calculations of the rate of interest contracted for, charged or received hereunder or otherwise that are made for the purpose of determining whether such rate exceeds the Maximum Rate shall be made, to the extent permitted by applicable usury laws, by amortizing, prorating and spreading in equal parts during the period of the full stated term of payment obligation all interest at any time contracted for, charged, collected or received by the Lender in connection herewith. The provisions of this Section 8.12 shall control over all provisions of this Agreement that may be in apparent conflict herewith, if any.

8.13 No Oral Agreements. THIS WRITTEN AGREEMENT, THE NOTE AND THE OTHER LOAN DOCUMENTS TOGETHER CONSTITUTE THE FINAL AGREEMENT OF THE PARTIES IN REGARD TO THE MATTERS DESCRIBED HEREIN AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG THE PARTIES.

8.14 USA Patriot Act. To the extent that Lender is now or hereafter becomes subject to the requirements of the USA Patriot Act (Title III of Pub. L. 107-56 (signed into law October 26, 2001)) (the “Act”), Lender hereby notifies the Borrower that pursuant to the requirements of the Act, it may be required to obtain, verify and record information that identifies the Borrower and its Subsidiaries, which information includes the name and address of the Borrower and its Subsidiaries, and other information that will allow such Lender to identify the Borrower and its Subsidiaries in accordance with the Act.

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


BORROWER:

CONTANGO OIL & GAS COMPANY

By:		/s/ KENNETH R. PEAK
		Kenneth R. Peak,
		Chairman of the Board, Chief Executive Officer, President, Chief Financial Officer, and Secretary

LENDER:

CENTAURUS CAPITAL LLC

By:		/s/ LAWRENCE G. WHALLEY
		Lawrence G. Whalley,
		President

For value received, CONTANGO OIL & GAS COMPANY, a Delaware corporation (the “Borrower”), promises to pay to the order of CENTAURUS CAPITAL LLC (the “Lender”), the aggregate unpaid principal amount of the Loan made by the Lender to the Borrower pursuant to the Term Loan Agreement referred to below on the dates and in the amounts specified in such Term Loan Agreement. All capitalized terms used herein and not otherwise defined have the meanings set forth in the Term Loan Agreement.

The Borrower promises to pay interest on the unpaid principal amount of the Loan at the rate and on the dates set forth in the Term Loan Agreement. Both principal and interest are payable in same day funds at the office of the Lender set forth in the Term Loan Agreement.

This Note is the note referred to in, and is entitled to the benefits of, the Term Loan Agreement dated as of January 30, 2007 (as amended, restated, modified, supplemented and in effect from time to time, the “Term Loan Agreement”) between the Borrower and the Lender. The Term Loan Agreement, among other things, contains provisions for acceleration of the maturity hereof upon the happening of certain stated events, for prepayments of principal hereof prior to the maturity hereof upon the terms and conditions therein specified, and for restrictions on the payment or collection of interest in excess of the Maximum Rate.

The Borrower and any and all endorsers, guarantors and sureties severally waive grace, demand, presentment for payment, notice of dishonor, default, acceleration or intent to accelerate, protest and notice of protest and diligence in collecting and bringing of suit against any party hereto, and agree to all renewals, extensions or partial payments hereon and to any release or substitution of security herefor, in whole or in part, with or without notice, before or after maturity.

This Note shall be governed by and construed under the laws of the State of New York.


CONTANGO OIL & GAS COMPANY

By:
Name:
Title:

THIS GUARANTY (this “Guaranty”) is dated January [ ], 2007, by [INSERT NAME OF GUARANTOR], a [Insert jurisdiction of organization and type of entity] (“Guarantor”), in favor of CENTAURUS CAPITAL LLC, a Delaware limited liability company (“Lender”).

Reference is made herein to that certain Term Loan Agreement of even date herewith by and among Contango Oil & Gas Company, a Delaware corporation (“Borrower”), and Lender (as the same may be amended, modified or restated from time to time, the “Term Loan Agreement”; capitalized terms used but not defined herein shall have the meaning given such terms in the Term Loan Agreement), and the indebtedness, obligations and liabilities owing thereunder or under the other Loan Documents, have been guaranteed by COE Offshore, LLC, a Delaware limited liability company, Contango Gas Solutions I, Inc., a Delaware corporation, Contango Gas Solutions II, Inc., a Delaware corporation, Contango Gas Solutions, L.P., a Texas limited partnership, Contango Operators, Inc., a Delaware corporation, Contango STEP I, Inc., a Delaware corporation, Contango STEP II, Inc., a Delaware corporation, Contango STEP, L.P., a Texas limited partnership, and REX Offshore Corporation, a Delaware corporation (collectively, the “Guarantors”).

WHEREAS, Lender has required, as a condition to the Term Loan Agreement, that Guarantor execute and deliver this Guaranty; and

WHEREAS, Guarantor has determined that valuable benefits will be derived by it as a result of the Term Loan Agreement and the extension of credit to be made by Lender thereunder; and

WHEREAS, Guarantor has further determined that the benefits accruing to it from the Term Loan Agreement exceed Guarantor’s anticipated liability under this Guaranty;

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

1. Guarantor hereby absolutely and unconditionally guarantees the prompt, complete and full payment when due, no matter how such shall become due, of the Obligations (defined below), and further guarantees that Borrower will properly and timely perform the Obligations. Notwithstanding any contrary provision in this Guaranty, however, Guarantor’s maximum liability under this Guaranty is limited, to the extent, if any, required so that its liability is not subject to avoidance under applicable Debtor Relief Laws (as such term is defined in Paragraph 8 hereof). As used herein, the term “Obligations” means all present or future indebtedness, obligations and liabilities of Borrower or any of the Guarantors incurred under, arising out of, or in connection with, the Term Loan Agreement and the other Loan Documents, including, without limitation, the Note and all other promissory notes given in substitution thereof or in modification, renewal or extension thereof, in whole or in part.

2. If Guarantor is or becomes liable for any indebtedness owing by Borrower to Lender by endorsement or otherwise than under this Guaranty, such liability shall not be in any manner impaired or affected hereby, and the rights of Lender hereunder shall be cumulative of any and all other rights that Lender may ever have against Guarantor. The exercise by Lender of any right or remedy hereunder or under any other instrument, at law or in equity, shall not preclude the concurrent or subsequent exercise of any other right or remedy.

3. In the event of default by Borrower in payment of the Obligations, or any part thereof, when such Obligations become due, either by their terms or as the result of the exercise of any power to accelerate, Guarantor shall, on demand, and without further notice of dishonor and without any notice having been given to Guarantor previous to such demand of the acceptance by Lender of this Guaranty, and without any notice having been given to such Guarantor previous to such demand of the creating or incurring of such Obligations, pay the amount due thereon to Lender in accordance with the method for payment described in the Term Loan Agreement, and it shall not be necessary for Lender, in order to enforce such payment by Guarantor, first, to institute suit or exhaust its remedies against Borrower or others liable on such Obligations, to have Borrower joined with Guarantor in any suit brought under this Guaranty or to enforce their rights against any security which shall ever have been given to secure such indebtedness; provided, however, that in the event Lender elects to enforce and/or exercise any remedies they may possess with respect to any security for the Obligations prior to demanding payment from Guarantor, Guarantor shall nevertheless be obligated hereunder for any and all sums still owing to Lender on the Obligations and not repaid or recovered incident to the exercise of such remedies.

4. Notice to Guarantor of the acceptance of this Guaranty and of the making, renewing or assignment of the Obligations and each item thereof, are hereby expressly waived by Guarantor.

5. Each payment on the Obligations shall be deemed to have been made by Borrower unless express written notice is given to Lender at the time of such payment that such payment is made by Guarantor as specified in such notice.

6. If all or any part of the Obligations at any time are secured, Guarantor agrees that Lender may at any time and from time to time, at its discretion and with or without valuable consideration, allow substitution or withdrawal of collateral or other security and release collateral or other security or compromise or settle any amount due or owing under the Term Loan Agreement or amend or modify in whole or in part the Term Loan Agreement or any Loan Document executed in connection with same without impairing or diminishing the obligations of Guarantor hereunder. Guarantor further agrees that if Borrower executes in favor of Lender any collateral agreement, mortgage or other security instrument, the exercise by Lender of any right or remedy thereby conferred on Lender shall be wholly discretionary with Lender, and that the exercise or failure to exercise any such right or remedy shall in no way impair or diminish the obligation of Guarantor hereunder. Guarantor further agrees that Lender shall not be liable for any failure to use diligence in the collection of the Obligations or in preserving the liability of any person liable for the Obligations, and Guarantor hereby waives presentment for payment, notice of nonpayment, protest and notice thereof (including, notice of acceleration), and diligence in bringing suits against any Person liable on the Obligations, or any part thereof.

7. Guarantor agrees that Lender, in its sole discretion, may (i) bring suit against all Guarantors (including, without limitation, Guarantor) of the Obligations jointly and severally or against any one or more of them, (ii) compound or settle with any one or more of such Guarantors for such consideration as Lender may deem proper, and (iii) release one or more of such Guarantors from liability hereunder, and that no such action shall impair the rights of Lender to collect the Obligations (or the unpaid balance thereof) from other such Guarantors of the Obligations, or any of them, not so sued, settled with or released. Guarantor agrees, however, that nothing contained in this paragraph, and no action by Lender permitted under this paragraph, shall in any way affect or impair the rights or obligations of such Guarantors among themselves.

8. Guarantor represents and warrants to Lender that, to the extent Guarantor is not an individual, Guarantor is (i) a corporation, limited liability company or limited partnership duly organized and validly existing under the laws of the jurisdiction of its incorporation or formation; and (ii) Guarantor possesses all requisite authority and power to authorize, execute, deliver and comply with the terms of this Guaranty; this Guaranty has been duly authorized and approved by all necessary action on the part of Guarantor and constitutes a valid and binding obligation of Guarantor enforceable in accordance with its terms, except as the enforcement thereof may be limited by applicable Debtor Relief Laws; and no approval or consent of any court or any Person, including any governmental entity, is required for the authorization, execution, delivery or compliance with this Guaranty which has not been obtained (and copies thereof delivered to Lender), other than those for which such failure to obtain would not reasonably be expected to result in a Material Adverse Effect. As used in this Guaranty, the term, “Debtor Relief Laws” means the Bankruptcy Code of the United States of America and all other applicable liquidation, conservatorship, bankruptcy, moratorium, rearrangement, receivership, insolvency, reorganization, suspension of payments or similar debtor relief laws from time to time in effect affecting the rights of creditors generally.

9. Guarantor covenants and agrees that until the Obligations are paid and performed in full, except as otherwise provided in the Term Loan Agreement or unless Lender gives their prior written consent to any deviation therefrom, it will (i) at all times maintain its existence and authority to transact business in any State or jurisdiction where the failure to maintain such existence would reasonably be expected to have a Material Adverse Effect, (ii) promptly deliver to Lender such information respecting its business affairs, assets and liabilities as Lender may reasonably request, and (iii) duly and punctually observe and perform all covenants applicable to Guarantor under the Term Loan Agreement and the other Loan Documents. The failure of Guarantor to comply with the terms of this paragraph shall be an Event of Default under the Term Loan Agreement.

10. This Guaranty is for the benefit of Lender, its successors and assigns, and in the event of an assignment by Lender (or its successors or assigns) of the Obligations, or any part thereof, the rights and benefits hereunder, to the extent applicable to the Obligations so assigned, may be transferred with such Obligations. This Guaranty is binding upon Guarantor and its successors and assigns.

11. No modification, consent, amendment or waiver of any provision of this Guaranty, nor consent to any departure by Guarantor therefrom, shall be effective unless the same shall be in writing and signed by Lender and Guarantor, and then shall be effective only in the specific instance and for the purpose for which given. No delay or omission by Lender in exercising any power or right hereunder shall impair any such right or power or be construed as a waiver thereof or any acquiescence therein, nor shall any single or partial exercise of any such power preclude other or further exercise thereof, or the exercise of any other right or power hereunder. All rights and remedies of Lender hereunder are cumulative of each other and of every other right or remedy which Lender may otherwise have at law or in equity or under any other contract or document, and the exercise of one or more rights or remedies shall not prejudice or impair the concurrent or subsequent exercise of other rights or remedies.

12. No provision herein or in any promissory note, instrument or any other Loan Document executed by Borrower or Guarantor evidencing the Obligations shall require the payment or permit the collection of interest in excess of the Maximum Rate. If any excess of interest in such respect is provided for herein or in any such promissory note, instrument, or any other Loan Document, the provisions of this paragraph shall govern, and neither Borrower nor Guarantor shall be obligated to pay the amount of such interest to the extent that it is in excess of the amount permitted by law. The intention of the parties being

to conform strictly to any applicable federal or state usury laws now in force, all promissory notes, instruments and other Loan Documents executed by Borrower or Guarantor evidencing the Obligations shall be held subject to reduction to the amount allowed under said usury laws as now or hereafter construed by the courts having jurisdiction.

13. If Guarantor should breach or fail to perform any provision of this Guaranty, Guarantor agrees to pay Lender all reasonable costs and expenses (including court costs and reasonable attorneys fees) incurred by Lender in the enforcement hereof.

14. (a) The liability of Guarantor under this Guaranty shall in no manner be impaired, affected or released by the insolvency, bankruptcy, making of an assignment for the benefit of creditors, arrangement, compensation, composition or readjustment of Borrower or any other Guarantor, or any proceedings affecting the status, existence or assets of Borrower or any other Guarantor, or other similar proceedings instituted by or against Borrower or any other Guarantor and affecting the assets of Borrower or any other Guarantor.

(b) Guarantor acknowledges and agrees that any interest on any portion of the Obligations which accrues after the commencement of any proceeding referred to in clause (a) above (or, if interest on any portion of the Obligations ceases to accrue by operation of law by reason of the commencement of said proceeding, such interest as would have accrued on such portion of the Obligations if said proceedings had not been commenced) shall be included in the Obligations because it is the intention of Guarantor and Lender that the Obligations which are guaranteed by Guarantor pursuant to this Guaranty should be determined without regard to any rule of law or order which may relieve Borrower of any portion of such Obligations. Guarantor will permit any trustee in bankruptcy, receiver, debtor in possession, assignee for the benefit of creditors or similar person to pay Lender, or allow the claim of Lender in respect of, any such interest accruing after the date on which such proceeding is commenced.

(c) In the event that all or any portion of the Obligations are paid by Borrower, the obligations of Guarantor hereunder shall continue and remain in full force and effect or be reinstated, as the case may be, in the event that all or any part of such payment(s) are rescinded or recovered directly or indirectly from Lender as a preference, fraudulent transfer or otherwise, and any such payments which are so rescinded or recovered shall constitute Obligations for all purposes under this Guaranty.

15. Guarantor understands and agrees that any amounts of Guarantor on account with Lender may be offset to satisfy the obligations of Guarantor hereunder.

16. Guarantor hereby subordinates and makes inferior any and all indebtedness now or at any time hereafter owed by Borrower to Guarantor to the Obligations evidenced by the Term Loan Agreement and agrees after the occurrence of an Event of Default under the Term Loan Agreement, or any event which with notice, lapse of time, or both, would constitute an Event Default thereunder, not to permit Borrower to repay, or to accept payment from Borrower of, such indebtedness or any part thereof without the prior written consent of Lender.

17. During the period that Lender has any commitment to lend under the Loan Documents, or any amount payable under any of the Loan Documents remains unpaid, and throughout any additional preferential period subsequent thereto, Guarantor hereby waives any and all rights of subrogation to which Guarantor may otherwise be entitled against Borrower, or any other Guarantor of the Obligations, as a result of any payment made by Guarantor pursuant to this Guaranty.

18. As of the date hereof, Guarantor is solvent and able to pay all of its liabilities as such liabilities mature.

19. If any provision of this Guaranty is held to be illegal, invalid, or unenforceable, such provision shall be fully severable; this Guaranty shall be construed and enforced as if such illegal, invalid, or unenforceable provision had never comprised a part hereof; and the remaining provisions hereof shall remain in full force and effect and shall not be affected by the illegal, invalid, or unenforceable provision or by its severance herefrom.

20. (a) THIS GUARANTY SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAW OF THE STATE OF NEW YORK WITHOUT REGARD TO ANY CHOICE-OF-LAW PROVISIONS THAT WOULD REQUIRE THE APPLICATION OF THE LAW OF ANOTHER JURISDICTION.

(b) EXCEPT TO THE EXTENT REQUIRED FOR THE EXERCISE OF THE REMEDIES PROVIDED IN THE OTHER LOAN DOCUMENTS, GUARANTOR HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY LAW, ANY OBJECTION WHICH IT MAY NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY LITIGATION (DEFINED BELOW) ARISING OUT OF OR IN CONNECTION WITH THIS GUARANTY OR ANY OF THE LOAN DOCUMENTS BROUGHT IN DISTRICT COURTS OF HARRIS COUNTY, TEXAS, OR IN THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF TEXAS, HOUSTON DIVISION.

(c) GUARANTOR HEREBY IRREVOCABLY CONSENTS TO THE SERVICE OF PROCESS OUT OF ANY OF THE AFOREMENTIONED COURTS IN ANY SUCH LITIGATION BY THE MAILING OF COPIES THEREOF BY CERTIFIED MAIL, RETURN RECEIPT REQUESTED, POSTAGE PREPAID, TO GUARANTOR’S OFFICE. NOTHING HEREIN SHALL AFFECT THE RIGHTS OF LENDER TO COMMENCE LEGAL PROCEEDINGS OR OTHERWISE PROCEED AGAINST GUARANTOR IN ANY JURISDICTION OR TO SERVE PROCESS IN ANY MANNER PERMITTED BY APPLICABLE LAW. TO THE EXTENT THAT GUARANTOR HAS OR HEREAFTER MAY ACQUIRE ANY IMMUNITY FROM JURISDICTION OF ANY COURT OR FROM ANY LEGAL PROCESS (WHETHER THROUGH SERVICE OR NOTICE, ATTACHMENT PRIOR TO JUDGMENT, ATTACHMENT IN AID OF EXECUTION, EXECUTION OR OTHERWISE) WITH RESPECT TO ITSELF OR ITS PROPERTY, GUARANTOR HEREBY IRREVOCABLY WAIVES SUCH IMMUNITY IN RESPECT OF ITS OBLIGATIONS UNDER THIS GUARANTY AND THE OTHER LOAN DOCUMENTS. AS USED HEREIN, THE TERM “LITIGATION” MEANS ANY PROCEEDING, CLAIM, LAWSUIT OR INVESTIGATION (I) CONDUCTED OR THREATENED BY OR BEFORE ANY COURT OR GOVERNMENTAL DEPARTMENT, COMMISSION, BOARD, BUREAU, AGENCY OR INSTRUMENTALITY OF THE UNITED STATES OR OF ANY STATE, COMMONWEALTH, NATION, TERRITORY, POSSESSION, COUNTY, PARISH, OR MUNICIPALITY, WHETHER NOW OR HEREAFTER CONSTITUTED OR EXISTING, OR (II) PENDING BEFORE ANY PUBLIC OR PRIVATE ARBITRATION BOARD OR PANEL.

(d) GUARANTOR HEREBY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY (WHETHER BASED ON CONTRACT, TORT OR ANY OTHER THEORY). GUARANTOR (I) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF

LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER AND (II) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS UNDER THE LOAN DOCUMENTS.

21. THIS GUARANTY AND THE OTHER LOAN DOCUMENTS COLLECTIVELY REPRESENT THE FINAL AGREEMENT BY AND AMONG LENDER AND GUARANTOR AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF LENDER AND GUARANTOR. THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG LENDER AND GUARANTOR.


GUARANTOR:

[INSERT NAME OF GUARANTOR], a [Insert jurisdiction of formation and type of organization]

By:
Name:
Title:

Reference is made to the Term Loan Agreement dated as of January 30, 2007 (as may be further amended and restated, and in effect on the date hereof, the “Loan Agreement”), between Contango Oil & Gas Company, a Delaware corporation, as Borrower, and Centaurus Capital LLC, as Lender. Terms defined in the Loan Agreement are used herein with the same meanings. This notice constitutes a Request for Advance and the Borrower hereby requests an advance under the Loan Agreement, and in that connection the Borrower specifies the following information with respect to the Borrowing requested hereby:

The Borrower hereby represents and warrants that no Event of Default has occurred and is continuing under the Loan Agreement.


Very truly yours,

CONTANGO OIL & GAS COMPANY

By:
		Kenneth R. Peak
		Chairman of the Board, Chief Executive
		Officer, President, Chief Financial Officer,
		and Secretary

By:
		Sergio Castro
		Vice President and Treasurer


Exhibit 1.1 –		Form of Note
Exhibit 1.2 –		Form of Guaranty
Exhibit 2.1 –		Form Request for Advance


Schedule 3.12 –		Subsidiaries
Schedule 3.13 –		Environmental Matters
Schedule 3.16 –		Future Commitments
Schedule 6.1 –		Existing Debt
Schedule 6.2 –		Existing Liens
Schedule 6.5 –		Loans, Advances and Investments


		Page
	Article 1
	Definitions

1.1	Defined Terms	1
1.2	Terms Generally	11
1.3	Accounting Terms	12

	Article 2
	Loan

2.1	The Loan	12
2.2	Repayment of Loan	13
2.3	Prepayment of Loan; Reduction of Amount of Loan	13
2.4	Interest	14
2.5	Payments Generally	14
2.6	Increased Costs	14
2.7	Break Funding Payments	15
2.8	Taxes	16

	Article 3
	Representations and Warranties

3.1	Organization	17
3.2	Authority Relative to this Agreement	17
3.3	No Violation	17
3.4	Financial Condition	18
3.5	Litigation	18
3.6	No Default	18
3.7	Ownership of Property; Liens	19
3.8	Intellectual Property	19
3.9	Taxes	19
3.10	Federal Reserve Regulations	20
3.11	ERISA	20
3.12	Subsidiaries	20
3.13	Environmental Matters	20
3.14	No Material Misstatements	21
3.15	Insurance	21
3.16	Future Commitments	21
3.17	Security Documents	21
3.18	Investment Company Status	22

	Article 4
	Conditions

4.1	Effective Date	22
4.2	Conditions to each Subsequent Advance of the Loan	23



	Article 5
	Affirmative Covenants

5.1	Financial Statements; Other Information	24
5.2	Notices of Material Events	26
5.3	Existence; Conduct of Business	26
5.4	Payment of Obligations	27
5.5	Maintenance of Properties; Insurance	27
5.6	Books and Records; Inspection Rights	27
5.7	Compliance with Laws	27
5.8	Ownership of Certain Subsidiaries	27
5.9	Use of Proceeds	28
5.10	Additional Collateral/Guarantors/Release of Prior Mortgages.	28

	Article 6
	Negative Covenants

6.1	Debt	28
6.2	Liens	29
6.3	Fundamental Changes	29
6.4	Disposition of Assets	29
6.5	Investments	29
6.6	Restricted Payments	30
6.7	Transactions with Affiliates	30
6.8	Restrictive Agreements	31
6.9	Business Acquisitions	31
6.10	Organizational Documents	31
6.11	Nature of Business	31
6.12	Accounting Changes	31
6.13	Working Capital	31
6.14	Freeport Organizational Documents	32
6.15	Debt Coverage	32
6.16	RBS Loan Agreement	32

	Article 7
	Events of Default and Remedies

7.1	Events of Default	32

	Article 8
	Miscellaneous

8.1	Notices	34
8.2	Amendments; Waivers	35
8.3	Successors and Assigns	36
8.4	Survival	36
8.5	Counterparts	36
8.6	Expenses; Indemnity; Damage Waiver	36
8.7	Severability	37
8.8	Governing Law	37
8.9	WAIVER OF JURY TRIAL	38


8.10	Headings	38
8.11	Confidentiality	38
8.12	Usury Savings Clause	39
8.13	No Oral Agreements	40
8.14	USA Patriot Act	40


H-648707.7


H-648707.7		i


H-648707.7		ii


H-648707.7		iii