Oxy engages in oil and gas exploration and production through its subsidiaries in three core regions of the world: the United States, Middle East/North Africa and Latin America. Oxy's Midstream, Marketing and Other segment comprises business units that gather, process, transport, store and market crude oil, natural gas, natural gas liquids and carbon dioxide. Glenn Springs Holdings, Inc., a wholly owned subsidiary of Occidental Petroleum Corp., manages historical environmental and operational sites for various Oxy entities with a focus on Oxy's commitment to the protection of health and the environment.
OxyChem, a wholly owned subsidiary, is a leading North American manufacturer of polyvinyl chloride (PVC) resins, chlorine and caustic soda – key building blocks for a variety of indispensable products such as plastics, pharmaceuticals and water treatment chemicals.