Occidental Petroleum Corporation is an international energy company with assets primarily in the United States, the Middle East, and North Africa. The Company is an oil and gas producer in the United States, including a producer in the Permian and DJ basins, and the offshore Gulf of Mexico. It operates through three segments: oil and gas, chemical and midstream and marketing. The oil and gas segment explores for, develops, and produces oil (which includes condensate), natural gas liquids (NGL) and natural gas. The chemical segment primarily manufactures and markets basic chemicals and vinyls. The midstream and marketing segment purchases, markets, gathers, processes, transports, and stores oil (which includes condensate), NGL, natural gas, carbon dioxide (CO2) and power. The midstream and marketing segment provides flow assurance and maximizes the value of its oil and gas. It also optimizes its transportation and storage capacity and invests in entities that conduct similar activities.