Occidental Petroleum Corporation (Occidental) conducts its operations through various subsidiaries and affiliates. The Company operates in three segments: oil and gas segment; chemical segment, and midstream, marketing and other segment. The oil and gas segment explores for, develops and produces oil and condensate, natural gas liquids (NGLs) and natural gas. The chemical segment (OxyChem) mainly manufactures and markets basic chemicals and vinyls. The midstream, marketing and other segment (midstream and marketing) gathers, processes, transports, stores, purchases and markets oil, condensate, NGLs, natural gas, carbon dioxide (CO2) and power. It also trades around its assets, including transportation and storage capacity, and trades oil, NGLs, gas and other commodities. The segment also invests in entities that conduct similar activities. On December 31, 2012, it acquired Eagle Ford Shale.