The company has oil reserves of around 600 million barrels (95,000,000m3)[11] and gas reserves of 10 billion m3.
On 26 September 2008, KNOC signed a deal with the Kurdistan Regional Government where KNOC was granted rights to explore and drill on several sites in the Iraqi Kurdistan in exchange for valuable support on a range of infrastructure projects.[12]
In 2009, the company purchased Harvest Operations for US$1.7 billion, along with its subsidiary North Atlantic Refining and its refinery in Come By Chance, Newfoundland and Labrador. It also assumed Harvest's US$2.2 billion in outstanding debt.[11][13][9] The US$3.9 billion bid was one of KNOC's largest deals at the time. That same year, the company acquired a 50% stake in privately held Petro-Tech, an oil firm with offshore assets in Peru.[14]
On 2 July 2010, KNOC confirmed preliminary discussions regarding a US$2.9 billion offer for the entire issued and to-be-issued share capital of Aberdeen-based Dana Petroleum.[15][16] In September 2010, Dana's management had continued to reject the takeover approach, but 64% of shares had already been bought by KNOC.[17][18][19] The takeover was official in October 2010, when KNOC secured 90% of Dana Petroleum's shares by going straight to the shareholders. The action led to the resignment of the chairman and three non-executive directors from the board.[20]
Tesoro Corporation, known briefly as Andeavor, was a Fortune 100 and a Fortune Global 500 company headquartered in San Antonio, Texas, with 2017 annual revenues of $35 billion, and over 14,000 employees worldwide. Based on 2017 revenue, the company ranked No. 90 in the 2018 Fortune 500 list of the largest United States corporations by total revenue.
Citgo Petroleum Corporation is a United States–based refiner, transporter and marketer of transportation fuels, lubricants, petrochemicals and other industrial products. Headquartered in the Energy Corridor area of Houston, it is majority-owned by PDVSA, a state-owned company of the Venezuelan government.
Petro-Canada is a retail and wholesale marketing brand subsidiary of Suncor Energy. Until 1991, it was a federal Crown corporation. In August 2009, Petro-Canada merged with Suncor Energy, with Suncor shareholders receiving approximately 60 percent ownership of the combined company and Petro-Canada shareholders receiving approximately 40 percent. The company retained the Suncor Energy name for the merged corporation and its upstream operations. It continues to use the Petro-Canada name nationwide.
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.
PetroChina Company Limited is a Chinese oil and gas company and is the listed arm of state-owned China National Petroleum Corporation (CNPC), headquartered in Dongcheng District, Beijing. The company is currently Asia's largest oil and gas producer. Traded in Hong Kong and New York, the mainland enterprise announced its plans to issue stock in Shanghai in November 2007, and subsequently entered the constituent of SSE 50 Index. In the 2020 Forbes Global 2000, PetroChina was ranked as the 32nd-largest public company in the world.
China Petroleum & Chemical Corporation (中国石油化工股份有限公司), or Sinopec, is a Chinese oil and gas enterprise based in Beijing. It is listed in Hong Kong and also trades in Shanghai.
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.
Singapore Petroleum Company Limited, in short SPC, is a Singaporean multinational oil and gas company. It is involved in the exploration and production of petroleum, refining, trading and petroleum product distribution.
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.
MOL Plc., also known as MOL Group, is a Hungarian multinational oil and gas company headquartered in Budapest, Hungary. Members of MOL Group include among others the Croatian and Slovak formerly state-owned oil and gas companies, INA and Slovnaft. MOL is Hungary's most profitable enterprise, with net profits of $770 million in 2019. The company is also the third most valuable company in Central and Eastern Europe and placed 402 on the Fortune Global 500 list of the world's largest companies in 2013.
Gunvor Group Ltd is a multinational energy commodities trading company registered in Cyprus, with its main trading office in Geneva, Switzerland. Gunvor also has trading offices in Singapore, Houston, Stamford, London and Dubai, with a network of representative offices around the globe. The company operates in the trade, transport, storage and optimization of petroleum and other energy products, as well as having investments in oil terminal and port facilities. Its operations consist of securing crude oil and petroleum products upstream and delivering it to market via pipelines and tankers. Gunvor has a separate company, Nyera, set up in 2021 to invest in renewable energy sources. It is run by energy transition director Fredrik Tornqvist.
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.
Compañía Española de Petróleos, S.A.U., commonly known as Cepsa, is a Spanish multinational oil and gas company headquartered at Torre Cepsa in the Cuatro Torres Business Area in Madrid, Spain. It operates in several European countries as well as in Algeria, Canada, Colombia, Morocco, Brazil, and Panama. The company currently produces around 260,000 barrels per day (41,000 m3/d) and has a refining capacity in three refineries of 21 million tonnes/year.
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.
Addax Petroleum was established in 1994 and since August 2009 has been a subsidiary of the Sinopec Group, one of the largest oil and gas producers in China, the biggest oil refiner in Asia, and the third largest worldwide. Addax Petroleum was an international gas and oil production and exploration company mainly focused on the Middle East, the North Sea, and Africa. Since its founding, the company has become one of the largest oil producers in West Africa.
China National Offshore Oil Corporation, or CNOOC Group, is the third-largest national oil company in China, after CNPC and China Petrochemical Corporation. The CNOOC Group focuses on the exploitation, exploration and development of crude oil and natural gas in offshore China, along with its subsidiary COOEC.
The Uganda Oil Refinery is a planned crude oil refinery in Kabaale village, on the Eastern shore of Lake Albert along the Hoima–Kaiso–Tonya Road, Buseruka Sub-county, Hoima District, Western Region, Uganda, near the border with the Democratic Republic of the Congo. It has been planned since 2010. Community opposition was repressed early on. After 5 years of negotiations the Albertine Graben Refinery Consortium (AGRC) formed in 2018 and agreed to design and build the refinery.
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.
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US$2.51 billion (2019) [1] 
