SAN RAMON, Calif. — Chevron Corp. has made three key appointments to its executive team and is realigning its existing technology and services organizations. Effective Jan. 1, Jay Johnson becomes senior vice president, Upstream, and Joe Geagea becomes senior vice president, Technology, Projects and Services. The new roles will report to George Kirkland, vice chairman and executive vice president, Upstream. Also effective Jan. 1, Pierre Breber becomes corporate vice president and president, Chevron Gas and Midstream. Todd Levy will replace Johnson in London as president of Europe, Eurasia and Middle East Exploration and Production Co. For more information, visit www.chevron.com or call (925) 842-1000.