| Occidental Petroleum Corporation (Occidental) conducts its operations through various oil and gas, chemical and other subsidiaries and affiliates. The Company operates in two segments: oil and gas, and chemical. The oil and gas segment explores for, develops, produces and markets crude oil and natural gas. The chemical segment (OxyChem) manufactures and markets basic chemicals, vinyls and performance chemicals. The Company's domestic oil and gas operations are located at the Permian Basin in west Texas and New Mexico, Elk Hills and other locations in California, the Hugoton field in Kansas and Oklahoma, Utah and western Colorado. International operations are located in Argentina, Bolivia, Colombia, Libya, Oman, Qatar, the United Arab Emirates and Yemen. OxyChem manufactures and markets basic chemicals, vinyls, chlorinated organics and performance chemicals. In June 2007, BP p.l.c. acquired Occidental's oil and gas interests in Horn Mountain. |