Chevron is engaged in energy and chemicals operations. Upstream operations consist primarily of, among others, exploring for, developing, producing and transporting crude oil and natural gas; processing, liquefaction, transportation and regasification associated with liquefied natural gas; transporting, storage and marketing of natural gas; and a gas-to-liquids plant. Downstream operations consist primarily of, among others, refining crude oil into petroleum products; marketing of crude oil, refined products and lubricants; and manufacturing and marketing of commodity petrochemicals, plastics for industrial uses and fuel and lubricant additives.