Enron Corporation was an American energy, commodities, and services company based in Houston, Texas. It was founded by Kenneth Lay in 1985 as a merger between Lay's Houston Natural Gas and InterNorth, both relatively small regional companies. Before its bankruptcy on December 2, 2001, Enron employed approximately 20,600 staff and was a major electricity, natural gas, communications, and pulp and paper company, with claimed revenues of nearly $101 billion during 2000. Fortune named Enron "America's Most Innovative Company" for six consecutive years.
BHP Group Limited is an Australian multinational mining and metals public company headquartered in Melbourne, Victoria, Australia.
Ovintiv Inc. is an American independent petroleum company. The company was formed in 2020 through a restructuring of its Canadian predecessor, Encana. Ovintiv is incorporated in Delaware and headquartered in Denver, Colorado.
Marathon Oil Corporation is an American company engaged in hydrocarbon exploration incorporated in Ohio and headquartered in the Marathon Oil Tower in Houston, Texas. A direct descendant of Standard Oil, it also runs international gas operations focused on Equatorial Guinea, offshore Central Africa.
Chesapeake Energy Corporation is an American exploration and production company, headquartered in Oklahoma City.
Group Sonangol is a parastatal that formerly oversaw petroleum and natural gas production in Angola. The group consisted of Sonangol E.P. and its many subsidiaries. The subsidiaries generally had Sonangol E.P. as a primary client, along with other corporate, commercial, and individual clients. Angola is estimated to have over 5 billion barrels (790,000,000 m3) of offshore and coastal petroleum reserves, and new discoveries are outpacing consumption by a 5-to-1 ratio.
Devon Energy Corporation is an energy company engaged in hydrocarbon exploration in the United States. It is organized in Delaware and its corporate operative headquarters are in the 50-story Devon Energy Center in Oklahoma City, Oklahoma. Its primary operations are in the Barnett Shale STACK formation in Oklahoma, Delaware Basin, Eagle Ford Group, and the Rocky Mountains.
CIT Group (CIT), a subsidiary of First Citizens BancShares, is an American financial services company. It provides financing, including factoring, cash management, treasury management, mortgage loans, Small Business Administration loans, leasing, and advisory services principally to individuals, middle-market companies and small businesses, primarily in North America. Under the reporting mark CEFX, it leases locomotives and railroad cars to rail transport and shipping companies in North America. It also operates a direct bank. In January 2022, CIT was acquired by First Citizens BancShares.
UGI Corporation is a natural gas and electric power distribution company headquartered in King of Prussia, Pennsylvania, with extensive operations in the United States and Europe.
SemGroup Corporation was a publicly-traded company engaged in natural gas, petroleum, and propane pipeline transport. It was organized in Delaware and headquartered in Tulsa, Oklahoma. In December 2019, the company was acquired by Energy Transfer LP.
Weatherford International plc, an American–Irish public limited company, together with its subsidiaries, is a multinational oilfield service company and one of the largest companies in the world in oil services. Weatherford is a company providing equipment and services used in the drilling, evaluation, completion, production, and intervention of oil and natural gas wells. Many of the company's businesses, including those of predecessor companies, have been operating for more than 50 years.
The institutional corruption in Angola refers to the pervasive and long-standing issue of corruption within the country's government and public institutions. The aftermath of the 30-year civil war and the influence of the Soviet command economy have resulted in significant institutional damage and the emergence of a centralized government with authoritarian tendencies. This has allowed the president and his associates to exert control over the nation's resources, enabling them to exploit the economy for personal gain through legal and extra-legal means.
SandRidge Energy, Inc. is a company engaged in hydrocarbon exploration in the Mid-Continent region of the United States. It is organized in Delaware and headquartered in Oklahoma City, Oklahoma.
BP p.l.c. is a British multinational oil and gas company headquartered in London, England. It is one of the oil and gas "supermajors" and one of the world's largest companies measured by revenues and profits. It is a vertically integrated company operating in all areas of the oil and gas industry, including exploration and extraction, refining, distribution and marketing, power generation, and trading.
Linn Energy, Inc. was a company engaged in hydrocarbon exploration. It was incorporated in Delaware and headquartered in Houston. In 2018, the company split into Roan Resources and Riviera Resources.
WPX Energy, Inc. was a company engaged in hydrocarbon exploration. It was organized in Delaware and headquartered in Tulsa, Oklahoma. In 2021, the company merged with Devon Energy.
Whiting Petroleum Corporation was a company engaged in hydrocarbon exploration primarily in the Bakken Formation and Three Forks Shale. It was organized in Delaware with its operational headquarters in Denver, Colorado.
Chord Energy Corporation is a company engaged in hydrocarbon exploration and hydraulic fracturing in the Williston Basin in North Dakota and Montana. It is organized in Delaware and headquartered in Houston, Texas, with an office in Williston, North Dakota. The company was formerly known as Oasis Petroleum.
GE Oil & Gas was the division of General Electric that owned its investments in the petroleum industry. In July 2017, this division was merged with Baker Hughes.
Concho Resources Inc. was a company engaged in hydrocarbon exploration, incorporated and organized in Delaware and headquartered in Midland, Texas, with operations exclusively in the Permian Basin. In 2021, the company was acquired by ConocoPhillips.
$0.016 billion (2016)
-$2.343 billion (2016)