Apache Corporation 6.000% NOTES DUE 2013

Exhibit 4.1

     THIS NOTE IS A GLOBAL SECURITY. UNLESS THIS NOTE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (THE “DEPOSITORY”) TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY NOTE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

CUSIP: 037411 AU 9
ISIN: US037411AU90

Apache Corporation
6.000% NOTES DUE 2013

     APACHE CORPORATION, a Delaware corporation (the “Company”, which term includes any successor corporation under the Indenture hereinafter referred to), for value received hereby promises to pay to Cede & Co., or registered assigns, the principal sum of Four Hundred Million Dollars on September 15, 2013 (“Stated Maturity”) and to pay interest thereon from October 1, 2008 or from the most recent date in respect of which interest has been paid or duly provided for, on March 15 and September 15 of each year (each, an “Interest Payment Date”), commencing March 15, 2009, and at Stated Maturity or upon such other date on which the principal of this Note becomes due and payable, whether by declaration of acceleration, notice of redemption or otherwise, and including any Redemption Date or Change in Control Purchase Date (each such date, “Maturity”), at the rate of 6.000% per annum, until the principal hereof is paid or duly made available for payment. The interest so payable, and punctually paid or duly provided for, on any Interest Payment Date will, as provided in the Indenture referred to below, be paid to the Person in whose name this Note (or one or more Predecessor Securities) is registered as of the close of business on March 1 or September 1, as the case may be (whether or not a Business Day), next preceding such Interest Payment Date (each such date, a “Regular Record Date”). Any such interest which is payable, but is not punctually paid or duly provided for, on any Interest Payment Date shall forthwith cease to be payable to the Holder of this Note on such Regular Record Date, and shall be paid to the Person in whose name this Note (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such defaulted interest to be fixed by the Trustee, notice whereof shall be given to the Holder of this Note not less than 10 days prior to such Special Record Date, or may be paid in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Notes may be listed, and upon such notice as may be required by such exchange, all as more fully provided in the Indenture.

     Payment of the principal of, and premium, if any, and interest on, this Note will be made at the office or agency maintained for that purpose in the Borough of Manhattan, The City of New York, in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts; provided, however, that payment of interest may be made at the option of the Company by check mailed to the Person in whose name this Note is registered at the close of business on the related record date; provided further, that, notwithstanding anything else contained herein, if this Note is a Global Security and is held in book-entry form through the facilities of the Depository, payments on this Note will be made to the Depository or its nominee in accordance with the arrangements then in effect between the Trustee and the Depository.

     Reference is hereby made to the further provisions of this Note set forth on the succeeding pages hereof, which further provisions shall for all purposes have the same effect as if set forth herein.

CERTIFICATE OF AUTHENTICATION

     This is one of the Securities of the series designated herein, referred to in the within-mentioned Indenture.

Apache Corporation
6.000% NOTES DUE 2013

     This Note is one of a duly authorized issue of Securities of the Company issued under an Indenture, dated as of February 15, 1996, between the Company and The Bank of New York Mellon Trust Company, N.A. (formerly known as The Bank of New York Trust Company, N.A., as successor-in-interest to JP Morgan Chase Bank, N.A., formerly known as The Chase Manhattan Bank), as trustee (the “ Trustee ”, which term includes any successor trustee under the Indenture), as supplemented by that certain First Supplemental Indenture, dated November 5, 1996, between the Company and the Trustee (the “ Indenture ”), designated as the 6.000% Notes due 2013 (the “Notes”), limited to $400,000,000 aggregate principal amount, subject to the provisions of the Indenture. Reference is made to the Indenture for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Notes and of the terms upon which the Notes are, and are to be, authenticated and delivered. All terms used in this Note set forth below which are not defined herein and which are defined in the Indenture shall have the meanings assigned to them in the Indenture.

     The Indenture provides for the defeasance of the Notes and certain covenants in certain circumstances.

     This Note is unsecured as to payment of principal and premium, if any, and interest, and ranks pari passu with all other unsecured unsubordinated indebtedness of the Company.

     Interest payments on this Note will include interest accrued to but excluding the applicable Interest Payment Date or Maturity hereof, as the case may be. Interest payments for this Note shall be computed and paid on the basis of a 360-day year of twelve 30-day months.

     In the case where the applicable Interest Payment Date or Maturity with respect hereto, as the case may be, does not fall on a Business Day, payment of principal, premium, if any, or interest otherwise payable on such day need not be made on such day, but may be made on the next succeeding Business Day with the same force and effect as if made on the Interest Payment Date or at Maturity and, unless the Company defaults on such payment, no interest shall accrue with respect to such payment for the period from and after the Interest Payment Date or such Maturity, as the case may be, to the date of payment. “Business Day” means any day other than a Saturday, Sunday or other day on which banking institutions in The City of New York are authorized or obligated by law, regulation or executive order to close.

     The Notes will not be subject to any sinking fund and, except as provided in the Indenture or herein, will not be redeemable or repayable prior to their Stated Maturity.

     The Notes are redeemable as a whole or in part, at the Company’s option at any time, at a Redemption Price equal to the greater of (i) 100 percent of their principal amount or (ii) the sum of the present values of the remaining scheduled payments of principal and interest thereon (not including any portion of such payments of interest accrued to the Redemption Date) discounted to the Redemption Date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the applicable Treasury Rate plus 50 basis points, plus, in each case, accrued interest to the Redemption Date. The Company will, however, pay the interest installment due on any Interest Payment Date that occurs on or before a Redemption Date to the Holders as of the close of business on the Regular Record Date immediately preceding that Interest Payment Date.

     “Treasury Rate” means, with respect to any Redemption Date, (a) the yield, under the