Valero Energy Corporation is an American-based downstream petroleum company mostly involved in manufacturing and marketing transportation fuels, other petrochemical products, and power. It is headquartered in San Antonio, Texas, United States. Throughout the United States and Canada, the company owns and operates 15 refineries, and one in Wales, with a combined throughput capacity of approximately 3 million barrels (480,000 m3) per day, 11 ethanol plants with a combined production capacity of 1.2 billion US gallons (4,500,000 m3) per year, and a 50-megawatt wind farm. A Fortune 500 company, before the 2013 spinoff of CST Brands, Valero was one of the United States' largest retail operators with approximately 6,800 retail and branded wholesale outlets in the United States, Canada, United Kingdom, Mexico and Peru under the Valero, Diamond Shamrock, Shamrock, Beacon, and Texaco brands.
ConocoPhillips Company is an American multinational corporation engaged in hydrocarbon exploration and production. It is based in the Energy Corridor district of Houston, Texas.
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.
Clayton Howard Riddell, OC was a Canadian billionaire businessman who was the founder, president and CEO of Paramount Resources, based in Calgary, Alberta.
Marathon Petroleum Corporation is an American petroleum refining, marketing, and transportation company headquartered in Findlay, Ohio. The company was a wholly owned subsidiary of Marathon Oil until a corporate spin-off in 2011.
Marathon Oil Corporation is an American company engaged in hydrocarbon exploration incorporated in Ohio and headquartered at 990 Town and Country Boulevard in Houston, Texas. A direct descendant of Standard Oil, it also runs international gas operations focused on Equatorial Guinea, offshore Central Africa.
Anadarko Petroleum Corporation was a company engaged in hydrocarbon exploration. It was organized in Delaware and headquartered in two skyscrapers in The Woodlands, Texas: the Allison Tower and the Hackett Tower, both named after former CEOs of the company. In 2019, the company was acquired by Occidental Petroleum.
Caltex is a petroleum brand name of Chevron Corporation used in the Asia-Pacific region, the Middle East, and Southern Africa. Headquartered in Singapore, it is also the brand name of non-Chevron petroleum companies in some countries under a trademark licensing agreement with Chevron.
APA Corporation is the holding company for Apache Corporation, an American company engaged in hydrocarbon exploration. It is organized in Delaware and headquartered in Houston. The company is ranked 431st on the Fortune 500.
EOG Resources, Inc. is an American energy company engaged in hydrocarbon exploration. It is organized in Delaware and headquartered in the Heritage Plaza building in Houston, Texas.
Lundin Energy was an independent oil and gas exploration and production company formed from Lundin Oil in 2001 and based in Sweden with focus on operations in Norway.
Obsidian Energy Ltd. is a mid-sized Canadian oil and natural gas production company based in Calgary, Alberta.
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.
This article describes the energy and electricity production, consumption and import in Egypt.
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.
Questerre Energy Corporation (QEC) is an international energy exploration company headquartered in Calgary, Canada, and listed on the Toronto Stock Exchange and the Oslo Stock Exchange. It holds the largest acreage position in the Utica Shale in the Saint Lawrence Lowlands. Questerre also have operations in Saskatchewan and in the Montney Formation in Alberta.
Canadian Natural Resources Limited, or CNRL or Canadian Natural is a senior Canadian oil and natural gas company that operates primarily in the Western Canadian provinces of British Columbia, Alberta, Saskatchewan, and Manitoba, with offshore operations in the United Kingdom sector of the North Sea, and offshore Côte d'Ivoire and Gabon. The company, which is headquartered in Calgary, Alberta, has the largest undeveloped base in the Western Canadian Sedimentary Basin. It is the largest independent producer of natural gas in Western Canada and the largest producer of heavy crude oil in Canada.
Indian Oil Corporation Limited is an Indian Multinational oil and gas company under the ownership of the Ministry of Petroleum and Natural Gas, Government of India. Headquartered in New Delhi, it is a public sector undertaking whose operations are overseen by the Ministry of Petroleum and Natural Gas. Indian Oil is ranked 94th on the Fortune Global 500 list of the world's biggest corporations as of 2022. It is the largest government owned oil producer in the country both in terms of capacity and revenue.It has consolidated refining capacity of 80.55MMTPA which it intends to increase to 107MMTPA by 2024-25. As of 31 March 2021, Indian Oil's employee strength is 31,648, out of which 17,762 are executives and 13,876 non-executives, while 2,776 are women, comprising 8.77% of the total workforce.
Selected timeline related to orphan wells in Alberta, Canada is a list of events relevant to orphan wells in Alberta, Canada. Orphan wells are inactive oil or gas well sites that have no solvent owner that can be held legally or financially accountable for the decommissioning and reclamation obligations to ensure public safety and to address environmental liabilities.
C$965.5 million [3] 
C$-367.2 million [3] 
