Chevron Corp. engages in the business of integrated energy and chemical operations. It operates through the Upstream and Downstream segments. The Upstream segment consists primarily of exploring for, developing and producing crude oil and natural gas; processing, liquefaction, transportation, and regasification associated with liquefied natural gas; transporting crude oil by major international oil export pipelines; transporting, storage and marketing of natural gas; and a gas-to-liquids project. The Downstream segment consists primarily of refining crude oil into petroleum products; marketing of crude oil and refined products; transporting crude oil and refined products by pipeline, marine vessel, motor equipment and rail car; and manufacturing and marketing of commodity petrochemicals, plastics for industrial uses and fuel and lubricant additives. The company was founded in 1906 and is headquartered in San Ramon, CA.