Greta Lydecker has been appointed managing director of the Aberdeen-based Chevron Upstream Europe, effective July 11, Chevron North Sea Ltd. said in a news release.

She succeeds Craig May, who was recently appointed to the role of vice president, upstream capability, based in Houston.

With a bachelor of science in geology from Allegheny College and a master’s of science in geophysics from Boston College, Lydecker previously served as vice president of Chevron’s San Joaquin Valley business unit in California. She joined Chevron in 1982 as a geologist and has held numerous positions of increasing responsibility in various locations throughout the U.S., according to the release.