Year-End Reserves for Anadarko Total 2.43 Billion boe

Anadarko Petroleum estimates its worldwide proved reserves at year-end 2007 totaled 2.43 billion BOE. In 2007, excluding the effect of divestitures, the company added approximately 250 million BOE of proved reserves and incurred costs in exploration and development activities of approximately $3.84 billion. Reserve additions were primarily driven by low-risk development activities and infill drilling in the Greater Natural Buttes area, Wattenberg field and Powder River Basin, as well as the previously announced Peregrino development offshore Brazil.

Anadarko's year-end 2007 proved reserves were balanced between natural gas (58%, or 8.50 trillion cubic feet) and liquids (42%, or 1.01 billion barrels), which include crude oil, condensate and natural gas liquids.