Anadarko Names Robert Gwin Senior Vice President.

Bruce Busmire Named Vice President, Chief Accounting Officer and Treasurer

HOUSTON -- Anadarko Petroleum Corporation (NYSE:APC) today announced that Robert G. Gwin has been named Senior Vice President.

Mr. Gwin has more than 20 years of experience in corporate finance and executive management. He joined Anadarko in January 2006 as Vice President, Finance and Treasurer.

In his new position, Mr. Gwin will join the company's executive management committee and will assume oversight of the company's human resources functions. In addition, he will continue to serve as the President and Chief Executive Officer of Western Gas Holdings, LLC, which is the general partner of Western Gas Partners, LP.

Anadarko also announced that Bruce W. Busmire, formerly the company's Vice President and Chief Accounting Officer, has been named Vice President, Chief Accounting Officer and Treasurer.

Mr. Busmire joined Anadarko in May 2006. He began his career in the energy industry in 1980 and has extensive experience in several areas of finance including accounting, investor relations and executive leadership.

Anadarko Petroleum Corporation's mission is to deliver a competitive and sustainable rate of return to shareholders by exploring for, acquiring and developing oil and natural gas resources vital to the world's health and welfare. As of year-end 2007, the company had 2.4 billion barrels-equivalent of proved reserves, making it one of the world's largest independent exploration and production companies. For more information about Anadarko, please visit www.anadarko.com.