POWER OF ATTORNEY
                     (Limited to Execution of Forms 4 and 5)



I, Sarah B. Teslik, do hereby constitute and appoint Cheri L. Peper and Jeffrey
B. King (with full power to each of them to act alone) as my true and lawful
agents and attorneys-in-fact with full power and authority to execute and
deliver on my behalf in accordance with Securities and Exchange Commission rules
and regulations all reports of changes in my beneficial ownership of securities
issued by Apache Corporation on Forms 4 and 5 as may be deemed advisable. I
hereby ratify and confirm all that each such agent and attorney-in-fact may do
by virtue hereof with respect to reports of my beneficial ownership of
securities issued by Apache Corporation.

This power of attorney shall remain in full force and effect until I am no
longer required to file Forms 4 and 5 with respect to changes in my beneficial
ownership of securities issued by Apache Corporation, unless earlier revoked by
me in writing delivered to the attorneys-in-fact named above.

In witness whereof, I have duly executed this power of attorney effective as of
this 1st day of November 2006.


                                                /s/ Sarah B. Teslik
                                         --------------------------------------
                                                    Sarah B. Teslik

State of Texas  ss.
                         ss.
County of Harrisss.

On this 1st day of November 2006, before me personally came Sarah B. Teslik, to
me known, and acknowledged this instrument. Witness my hand and official seal.


                                                 /s/ Melinda Jenkins
                                                --------------------
                                                    Notary Public
[Seal for Melinda Jenkins]
[Notary Public, State of Texas]
[My Commission Expires 07-25-2008]