Based in: United States
Occidental Petroleum Corporation (NYSE: OXY) is an international oil and gas exploration and production company with operations in the United States, Middle East region and Latin America.
Headquartered in Houston, Occidental is one of the largest U.S. oil and gas companies, based on equity market capitalization.
Fields in Iraq: Had a 23.44 percent share in the Zubair oil field, but relinquished it to the state-owned South Oil Company in October 2016.
From the company's website:
Occidental and consortium members Eni and Korea Gas Corporation are redeveloping the Zubair Field in southern Iraq with state-owned South Oil Company and Missan Oil Company as state partner. Zubair is one of the largest discovered oilfields in the world.
In 2014, the consortium partners received approval from the Government of Iraq for the full field development to the contractually targeted production level of 850,000 barrels of oil per day.
For latest news on this company's activities in Iraq please click here.
A full list of International Oil Companies (IOCs) operating in Iraq under licences granted by the Ministry of Oil in Baghdad can be found here.