Ms Meyer is currently vice president of the Gulf of Mexico strategic business unit in Covington, Louisiana. She has held management assignments in Kazakhstan and Angola and senior positions in Chevron’s North America upstream organization, including being vice president of the MidContinent business unit.

Mr Ehrlich joined Chevron in 1981 as a programmer-analyst in New Orleans, Louisiana. He has since held several senior roles, including being named CIO for Chevron’s downstream marketing business in 2000. He is currently vice president of services and strategy and CIO for global downstream.

John McDonald, Chevron’s vice president and chief technology officer, said: Both these appointments will help ensure Chevron continues to deliver outstanding performance in the development of our global energy portfolio.