Occidental Petroleum Corp. engages in the exploration and production of oil and natural gas. The company is headquartered in Houston, Texas and currently employs 13,323 full-time employees. The firm 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. The company 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. The company also optimizes its transportation and storage capacity and invests in entities that conduct similar activities.