Occidental Petroleum Corporation is an integrated oil and gas company, with significant exploration and production exposure. The company is also a producer of a variety of basic chemicals, petrochemicals, polymers and specialty chemicals. The company conducts its operations through three segments: Oil and Gas, Chemical, and Midstream and Marketing. Oil and Gas segment explores, develops, produces and markets crude oil, natural gas liquids, condensate and natural gas. The company has operations in the U.S. as well as international locations. Chemical segment works under the company's wholly-owned subsidiary, Occidental Chemical Corporation. It manufactures and markets polyvinyl chloride resins, chlorine and caustic soda. Midstream and Marketing segment encompasses operations that gather, treat, process, transport, store, trade and market crude oil, natural gas, NGL, condensates and carbon dioxide. It also offers these services to third parties.