Exploration and development of natural gas in the Marcellus Shale

Pioneer's mission of responsibly finding and producing oil and natural gas resources requires we stay true to the fundamental principles on which Pioneer was built.

Over the last 135 years, ExxonMobil has evolved from a regional marketer of kerosene in the U.S. to the largest publicly traded petroleum and petrochemical enterprise in the world.

We acquire the best, high quality, producing properties within the United States, increase operational efficiencies and prudently develop our assets to generate attractive returns and maximize values.

Kosmos is a full-cycle deep water independent oil and gas exploration and production company focused on the Atlantic Margins.

Hunt Oil actively engages in exploration and production activities in numerous areas in the United States, and it operates the majority of its U.S. production.