Gulf Oil was a major global oil company in operation from 1901 to 1985. The eighth-largest American manufacturing company in 1941 and the ninth-largest in 1979, Gulf Oil was one of the Seven Sisters oil companies. Prior to its merger with Standard Oil of California, Gulf was one of the chief instruments of the Mellon family fortune; both Gulf and Mellon Financial had their headquarters in Pittsburgh, Pennsylvania, with Gulf's headquarters, the Gulf Tower, being Pittsburgh's tallest building until the completion of the U.S. Steel Tower.
Sunoco LP is an American master limited partnership organized under Delaware state laws and headquartered in Dallas, Texas. Dating back to 1886, the company has transitioned from a vertically integrated energy company to a distributor of fuels. It was previously engaged in oil, natural gas exploration and production, refining, chemical manufacturing, and retail fuel sales, but divested these businesses. Sunoco is the largest independent distributor of fuels in the United States.
The Athabasca oil sands, also known as the Athabasca tar sands, are large deposits of bitumen or extremely heavy crude oil that constitute unconventional resources, located in northeastern Alberta, Canada – roughly centred on the boomtown of Fort McMurray. These oil sands, hosted primarily in the McMurray Formation, consist of a mixture of crude bitumen, silica sand, clay minerals, and water. The Athabasca deposit is the largest known reservoir of crude bitumen in the world and the largest of three major oil sands deposits in Alberta, along with the nearby Peace River and Cold Lake deposits.
Husky Energy Inc. was a Canadian company engaged in hydrocarbon exploration, headquartered in Calgary, Alberta, Canada. It operates in Western and Atlantic Canada, the United States and the Asia Pacific region, with upstream and downstream business segments. In the 2020 Forbes Global 2000, Husky Energy was ranked as the 1443rd-largest public company in the world.
TotalEnergies SE is a French multinational integrated energy and petroleum company founded in 1924 and is one of the seven supermajor oil companies. Its businesses cover the entire oil and gas chain, from crude oil and natural gas exploration and production to power generation, transportation, refining, petroleum product marketing, and international crude oil and product trading. TotalEnergies is also a large-scale chemicals manufacturer.
BP Canada was a Canadian petroleum company and subsidiary of British Petroleum that existed between 1955 and 1992. The name refers to a group of companies that engaged in various segments of the petroleum industry lifecycle. BP entered the Canadian market in October 1953, when it purchased a 23 percent stake in the Triad Oil Company. In 1955, BP formed a Canadian subsidiary, based in Montreal, called BP Canada Limited. The company began acquiring retail stations in Ontario and Quebec and in 1957 started construction on a refinery in Montreal. By the end of the 1950s BP Canada was a fully-integrated operation. In 1964, it acquired from Cities Service the Oakville Refinery, and then expanded its operations significantly in 1971 when it acquired Supertest Petroleum.
TC Energy Corporation is a major North American energy company, based in the TC Energy Tower building in Calgary, Alberta, Canada, that develops and operates energy infrastructure in Canada, the United States, and Mexico. The company operates three core businesses: Natural Gas Pipelines, Liquids Pipelines and Energy.
Suncor Energy is a Canadian integrated energy company based in Calgary, Alberta. It specializes in production of synthetic crude from oil sands. In the 2020 Forbes Global 2000, Suncor Energy was ranked as the 48th-largest public company in the world.
Talisman Energy Inc. was a Canadian independent petroleum company that existed between 1993 and 2015. The company was created from the assets of BP Canada after British Petroleum divested its 57 percent stake in June 1992. It was one of Canada's largest independent oil and gas companies, and operated globally, with operations in Canada and the United States of America in North America; Colombia, South America; Algeria in North Africa; United Kingdom and Norway in Europe; Indonesia, Malaysia, Vietnam, Papua New Guinea, East Timor and Australia in the Far East; and Kurdistan in the Middle East. Talisman Energy has also built the offshore Beatrice Wind Farm in the North Sea off the coast of Scotland.
The China National Petroleum Corporation (CNPC) is a major national oil and gas corporation of China and one of the largest integrated energy groups in the world. Its headquarters are in Dongcheng District, Beijing. CNPC was ranked fourth in 2022 Fortune Global 500, a global ranking of the largest corporations by revenue.
Ultramar is an Eastern Canadian gas and home fuel retailer, with its head office located in Montreal, Quebec. It is the largest oil brand in Quebec and operates gas stations and home fuel delivery in Ontario, Quebec, and Atlantic Canada.
Canada has access to all main sources of energy including oil and gas, coal, hydropower, biomass, solar, geothermal, wind, marine and nuclear. It is the world's second largest producer of uranium, third largest producer of hydro-electricity, fourth largest natural gas producer, and the fifth largest producer of crude oil. In 2006, only Russia, the People's Republic of China, the United States and Saudi Arabia produce more total energy than Canada.
Dana Petroleum Limited is an oil and gas exploration and production company based in Aberdeen, Scotland. Its activities are focused on the North Sea, Africa and The Middle East. It is a subsidiary of the Korea National Oil Corporation and is a former constituent of the FTSE 250 Index.
Coastal Corporation was a diversified energy and petroleum products company headquartered at 9 Greenway Plaza in Greenway Plaza, Houston, Texas. The company was founded in 1955 by Oscar Wyatt and incorporated in 1955 as Coastal States Gas Producing Company. It merged with the El Paso Corporation in 2001. As of 1999, Coastal was a Fortune 500 company with 13,300 employees and annual revenues of $8.2 billion.
Supertest Petroleum Limited was a Canadian petroleum company that operated from 1923 to 1973. Its head office was in London, Ontario. It marketed itself as "Canada's All-Canadian Company", and was acquired by BP Canada in 1971.
Although there are numerous oil companies operating in Canada, as of 2009, the majority of production, refining and marketing was done by fewer than 20 of them. According to the 2013 edition of Forbes Global 2000, canoils.com and any other list that emphasizes market capitalization and revenue when sizing up companies, as of March 31, 2014 these are the largest Canada-based oil and gas companies.
Gulf Canada was a Canadian integrated petroleum company that existed between 1944 and 2001. Gulf Oil Corporation began operating in Canada in 1942, and two years later formed a Canadian subsidiary called the Canadian Gulf Oil Company. In 1956 Canadian Gulf Oil merged with the British American Oil Company and until 1969 operated under the British American name. In 1969, British American amalgamated with its subsidiaries into a new company called Gulf Oil Canada Limited.
Encana Corporation was a Canadian independent petroleum company that existed from 2002 to 2020. The company, stylised as EnCana until 2010, was created by David P. O'Brien of PanCanadian Petroleum and Gwyn Morgan of the Alberta Energy Company through the merger of their companies. At the time of its creation Encana was the world's largest independent petroleum company by measure of its value, production, and reserves. Morgan ran the company from its inception through the end of 2005. During its early years, Encana established its reputation as Canada's flagship energy company and an icon of Western Canadian business. In September 2005 it became Canada's largest corporation by market capitalisation for a brief time.
C$76.911 billion (2022)
