Occidental Petroleum Corporation is one of the world's largest oil groups in the United States. Net sales (including intra-group) break down by activity as follows:
- exploration and production of hydrocarbon (70%): 226 million barrels of crude oil, 91 million barrels of natural gaz liquids and 18.4 billion m3 of natural gas produced in 2021;
- fabrication of chemicals (19.4%): basic chemicals (chlorine, caustic soda, ethylene, etc.) and performance chemicals (primarily PVC, pigments, and plastics);
- transportation, storage and distribution of hydrocarbons (10.6%).
The United States account for 84.2% of net sales.