Chevron Corporation (Chevron) manages its investments in subsidiaries and affiliates, and provides administrative, financial, management and technology support to the United States and international subsidiaries that engage in integrated energy and chemicals operations. The Company operates through two business segments: Upstream and Downstream. Upstream operations consist primarily of exploring for, developing and producing crude oil and natural gas; liquefaction, transportation and regasification associated with liquefied natural gas; transporting crude oil by international oil export pipelines; processing, transporting, storage and marketing of natural gas, and a gas-to-liquids plant. Downstream operations consist primarily of refining of crude oil into petroleum products; marketing of crude oil and refined products; transporting of crude oil and refined products, and manufacturing and marketing of commodity petrochemicals.