Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
ANADARKO PETROLEUM CORP
  2. Issuer Name and Ticker or Trading Symbol
Western Gas Partners LP [WES]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
1201 LAKE ROBBINS DR.
3. Date of Earliest Transaction (Month/Day/Year)
08/02/2010
(Street)

THE WOODLANDS, TX 77380
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ 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 Units representing limited partner interests 08/02/2010   P   1,048,196 A (1) 10,302,631 (1) (2) I See footnotes (1) (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
ANADARKO PETROLEUM CORP
1201 LAKE ROBBINS DR.
THE WOODLANDS, TX 77380
    X    
WESTERN GAS RESOURCES INC
1201 LAKE ROBBINS DR.
THE WOODLANDS, TX 77380
    X    
WGR Holdings LLC
1201 LAKE ROBBINS DR.
THE WOODLANDS, TX 77380
    X    

Signatures

 /s/ David L. Siddall, Vice President, Deputy General Counsel and Corporate Secretary of Anadarko Petroleum Corporation   08/03/2010
**Signature of Reporting Person Date

 /s/ David L. Siddall, Vice President and Corporate Secretary of Western Gas Resources, Inc.   08/03/2010
**Signature of Reporting Person Date

 /s/ David L. Siddall, Vice President and Secretary of WGR Holdings, LLC   08/03/2010
**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) On August 2, 2010, in connection with the closing of the transactions contemplated by the Contribution Agreement (the "Contribution Agreement"), dated July 30, 2010, among Western Gas Resources, Inc. ("WGR"), WGR Asset Holding Company LLC, WGR Holdings, LLC ("WGR Holdings"), Western Gas Holdings, LLC (the "General Partner"), WES GP, Inc., Western Gas Partners, LP (the "Partnership"), Western Gas Operating, LLC and WGR Operating, LP, the Partnership acquired Kerr-McGee Gathering LLC for aggregate consideration of approximately $498 million. The consideration consisted of $473,100,000 in cash, 1,048,196 common units of the Partnership issued to WGR Holdings and 21,392 general partner units of the Partnership issued to the General Partner.
(2) As of August 2, 2010, (i) WGR Holdings owns 99% of the membership interests in the General Partner, (ii) WGR owns all of the membership interests of WGR Holdings and (iii) Anadarko Petroleum Corporation ("Anadarko") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGR Holdings.

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