Occidental Petroleum Corp. engages in the exploration and production of oil and natural gas. It operates through the following segments: Oil and Gas, Chemical, and Midstream and Marketing.

Marathon Petroleum Corp. engages in the refining, marketing, and transportation of petroleum products. It operates through the Refining and Marketing, and Midstream segments. The Refining and ...

Occidental said its average realized price for oil output was $71.07 per barrel, compared to $69.73 per barrel it realized ...