press release

Unocal names Joseph Bryant as president and chief operating officer

El Segundo, Calif., July 21, 2004 - Unocal Corporation (NYSE: UCL) today said that Joseph H. Bryant has been named as Unocal's president and chief operating officer effective Sept. 1, 2004.

Joseph H. Bryant

Bryant, 48, has been president of BP Angola since 2000. Previously, he was president of BP Canada and an Amoco joint venture in China. He also has held leadership roles for Amoco business units in The Netherlands and the Gulf of Mexico and numerous engineering, financial and operational assignments throughout the continental U.S. He holds a Bachelor of Science degree in mechanical engineering from the University of Nebraska.

"Joe comes to Unocal with more than 27 years experience in the industry in both the domestic and international arenas," said Charles R. Williamson, Unocal chairman, chief executive officer and president. "He is a proven business leader and brings broad experience in exploration, production, and operations around the world, including management of deepwater developments."

Bryant will also serve on Unocal's management committee. He will be based at the company's Sugar Land, Texas, office, but will divide his time between Texas and Unocal corporate headquarters in El Segundo, Calif.

Bryant will be responsible for the company's domestic and international E&P units, as well as Unocal's reservoir and production engineering, exploration technology, drilling procurement and logistics, engineering and construction, and corporate information groups.

Unocal's president and COO post became vacant earlier this year when Timothy H. Ling died unexpectedly. Williamson has held the president post temporarily since that time.

About Unocal Corporation

Unocal is one of the world's leading independent natural gas and crude oil exploration and production companies. The company's principal oil and gas activities are in North America and Asia.

Updated: July 2004