Edward L. Doheny prices were high. The Mexican Petroleum Company was the largest in Mexico, and Mexico was the largest oil producer in the world. In 1922 Albert B. Fall, U.S. Secretary of the Interior, leased the oil field at Elk Hills, California, to the Pan American Petroleum & Transport Company. Around the same time, the Teapot Dome Field in Wyoming was leased to Sinclair Consolidated Oil Corporation. Both oilfields were part of the US Navy's petroleum reserves. Neither lease was subject to competitive bidding. In 1924 rumors about corruption in the deals escalated into the Teapot Dome scandal. Doheny's reputation was somewhat
Oil reserves in Ghana with Vetro Energy and PetroSeraya of Singapore have declared interests to provide assistance in construction of offshore platforms and drilling rigs for Ghana's state-owned oil company, Ghana National Petroleum Company on rapidly developing Ghana's oil and gas infrastructure and industry as Ghana aims to further increase output of oil to 2 million barrels per day and gas to 1.2 billion cubic feet per day with an expected annual generating revenue of GH₵140.7 billion (US$65 billion) in 2014. Ghana is believed to have up to to of petroleum in reserves, which is the sixth largest in Africa and the 25th largest