Occidental Petroleum Corporation (Occidental) conducts its operations, through various oil and gas, chemical, midstream, marketing and other subsidiaries, and affiliates. The Company operates in three business segments: oil and gas segment, chemical segment, and midstream, marketing and other segment. The oil and gas segment explores for, develops, produces and markets crude oil, natural gas liquids (NGLs), condensate and natural gas. The chemical segment (OxyChem) manufactures and markets basic chemicals, vinyls and performance chemicals. The midstream, marketing and other segment (midstream and marketing) gathers, treats, processes, transports, stores, trades and markets crude oil, natural gas, NGLs, condensate and carbon dioxide (CO2) and generates and markets power. In February 2008, Occidental purchased from Plains a 50% interest in oil and gas properties in the Permian Basin and western Colorado.