June 24 (Reuters) - Chevron ( CVX ) said on Monday it

expects upstream turnarounds and downtime to impact 65,000

barrels of oil equivalent per day in production in the second

quarter mostly at Tengizchevroil (TCO) in Kazakhstan and several

Gulf of Mexico assets.

The U.S. oil major said it expects downstream turnarounds to

impact earnings by $300 million to $400 million mainly due to

maintenance at the El Segundo and Richmond refineries in

California.