FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * PLANK ROGER B   2. Issuer Name and Ticker or Trading Symbol APACHE CORP [APA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President and / Chief Corporate Officer (Last) (First) (Middle) 2000 POST OAK BLVD, SUITE 100 3. Date of Earliest Transaction (Month/Day/Year) 02/12/2012 (Street) HOUSTON, TX 77056 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock (1) 02/12/2012   M(2)   12,500 A $ 0 133,976 D   Common Stock (1) 02/12/2012   F(3)   4,557 D $ 105.13 129,419 D   Common Stock (1)               12,134 I By Spouse Common Stock (1)               32,930 I By trust fbo L.B. Plank Common Stock (1)               38,934.911 I Held by trustee of 401(k) plan Common Stock (1)               35,557.4058 I By Trust (4) Common Stock (1)               15,731.646 I Held by trustee of NQ Plan Common Stock (1)               30,313.5942 I Indian Creek Holdings, Ltd.

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock / Units (5)

$ 0

02/12/2012

M

12,500

(2)

(2)

Common Stock (1)

12,500

$ 0

38,693

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
PLANK ROGER B 2000 POST OAK BLVD, SUITE 100 HOUSTON, TX 77056			President and	Chief Corporate Officer

Signatures

Cheri L. Peper, Attorney-in-Fact		02/13/2012
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The shares of common stock of Apache are deemed to also represent certain preferred stock purchase rights ('Rights'). The Rights are not currently exercisable or separately tradable and presently are evidenced by certificates for shares of the common stock. Value attributable to such Rights, if any, is reflected in the market price of the common stock.
(2)	Vesting on 02/12/2012 of restricted stock units pursuant to restricted stock unit award agreement under employer plan. Of these 12,500 shares, 7,500 shares (4,766 shares after tax withholding) will not be eligible for sale by the reporting person until such time as he retires or otherwise terminates employment with the company.
(3)	Shares withheld to cover required tax withholding on vesting of restricted stock units effective as of 02/12/2012.
(4)	These shares are held in trust for the benefit of the reporting person's children. The reporting person and spouse are trustees.
(5)	With tandem tax withholding right

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