press release

Unocal's 1Q 2002 earnings conference call set for April 25

El Segundo, Calif., April 18, 2002 -- Unocal Corporation (NYSE: UCL) will discuss its first quarter 2002 financial and operating results in a conference call webcast on Unocal's web site on Thursday, April 25, 2002. The conference call will begin at 1:00 p.m. PDT (4:00 p.m. EDT).

Investors, analysts, stockholders, news media, employees and the general public are invited to listen to the webcast. Listeners can use RealPlayer or Windows Media Player. Replays and transcripts of the conference call will be available on the Unocal web site through May 31, 2002.

Robert E. Wright, vice president of Investor Relations for Unocal, will be the conference call moderator. Timothy H. Ling, Unocal's president and chief operating officer, will join him. Unocal will offer graphics during the call that can be viewed or downloaded on your computer from the Unocal web site.

Unocal expects to announce its first quarter 2002 earnings results on April 25 before the open of trading on the NYSE.

About Unocal Corporation

Unocal is one of the world's leading independent natural gas and crude oil exploration and production companies. The company's oil and gas activities are in North America, Asia, Latin America, the North Sea, and West Africa. Unocal is one of the world's largest producers of geothermal energy with operations in the Philippines and Indonesia.

Updated: April 2002