POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby
 constitutes and appoints Robert K. Reeves, Amanda M. McMillian,
Anne V. Bruner, Rachelle Maniago-Earls and Courtney H. Landry,
signing singly, the undersigned's true and lawful
attorney-in-fact to:

1. execute for and on behalf of the undersigned, in the
undersigned's capacity as a director and officer of Anadarko
Petroleum Corporation (the "Company"), Forms ID, 3, 4 and 5,
pursuant to Section 16(a) of the Securities Exchange Act of
1934 and the rules thereunder, and Form 144, pursuant to
Rule 144 under the Securities Act of 1933 and the rules
thereunder, if required; and

2. do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete
and execute any such Form 3, Form 4, Form 5 or Form 144 and
timely file such form with the United States Securities and
Exchange Commission and any stock exchange or similar
authority; and

3. take any other action of any type whatsoever in connection
with the foregoing which, in the opinion of such attorney-in-fact,
may be of benefit to, in the best interest of, or legally
required by, the undersigned, it being understood that the documents
executed by such attorney-in-fact on behalf of the undersigned
pursuant to this Power of Attorney shall be in such form and shall
contain such terms and conditions as such attorney-in-fact may
approve in such attorney-in-fact's discretion.

The undersigned hereby grants such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever
requisite, necessary or proper to be done in the exercise of any
of the rights and powers herein granted, as fully to all intents
and purposes as the undersigned might or could do if personally
present, with full power of substitution or revocation, hereby
ratifying and confirming all that such attorney-in-fact shall
lawfully do or cause to be done by virtue of this power of attorney
and the rights and powers herein granted. The undersigned acknowledges
that the foregoing attorney-in-fact, in serving in such capacity at
the request of the undersigned, is not assuming, nor is the Company
assuming, any of the undersigned's responsibilities to comply with
Section 16(a) of the Securities Exchange Act of 1934 or Rule 144 of
the Securities Act of 1933.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer a director or an officer of the Company unless
earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact; provided, however, this Power of Attorney
will expire immediately upon the termination of employment of any
attorney-in-fact as to that attorney-in-fact only, but not as to any
other appointed attorney-in-fact hereunder.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
to be executed as of this 9th day of February, 2017.


/s/ R. A. Walker
R. A. Walker