Chevron Corp., San Ramon, (NYSE: CVX) has named Melody Meyer president of Chevron energy technology, effective June 1. She is vice president, Gulf of Mexico strategic unit, in Covington, La.

                Mark Puckett will retire as president of Chevron energy technology, effective June 1.

Louie Ehrlich has been named president of Chevron information technology and chief information officer, effective June 1. He is vice president, services and strategy, and CIO for global downstream.

Gary Masada will retire as president of Chevron information technology and CIO, effective June 1.