ConocoPhillips Company is an American multinational corporation engaged in hydrocarbon exploration and production. It is based in the Energy Corridor district of Houston, Texas.
BG Group plc was a British multinational oil and gas company headquartered in Reading, United Kingdom. On 8 April 2015, Royal Dutch Shell announced that it had reached an agreement to acquire BG Group for $70 billion, subject to regulatory and shareholder agreement. The sale was completed on 15 February 2016. Prior to the takeover, BG Group was listed on the London Stock Exchange and was a constituent of the FTSE 100 Index. In the 2015 Forbes Global 2000, BG Group was ranked as the 583rd 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.
Eni S.p.A., acronym for and formerly legally known as Ente nazionale idrocarburi, is an Italian multinational energy company headquartered in Rome. It is considered one of the "supermajor" oil companies in the world, with a market capitalization of €50 billion, as of 31 December 2023. The Italian government owns a 30.5% golden share in the company, 1.99% held through the Ministry of Economy and Finance and 28.5% through the Cassa Depositi e Prestiti. The company is a component of the Euro Stoxx 50 stock market index.
Capricorn Energy plc is a British oil and gas exploration and development company based in Edinburgh, Scotland.
Oil India Limited (OIL) is a central public sector undertaking engaged in the business of exploration, development and production of crude oil and natural gas, transportation of crude oil and production of liquid petroleum gas. The central public sector undertaking is a Maharatna, with the Ministry of Petroleum and Natural Gas overseeing its operations. Headquartered in Duliajan, Assam, the company has its offices in Duliajan, Noida, Guwahati and Jodhpur.
Premier Oil plc was an independent UK oil company with gas and oil interests in the United Kingdom, Asia, Africa and Mexico. It was devoted entirely to the 'upstream' sector of the industry — the exploitation of oil and gas — as opposed to the 'downstream' refining and retail sector. It was listed on the London Stock Exchange until it was acquired by Chrysaor Holdings and then merged into Harbour Energy in March 2021.
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.
AVEVA Group plc is a British multinational information technology consulting company headquartered in Cambridge, England. The company started as the Computer-Aided Design Centre which was created in Cambridge in 1967 by the UK Ministry of Technology and Cambridge University.
Pharos Energy Plc, previously SOCO International, is an oil and gas exploration and production company, headquartered in London. The company changed its name to Pharos Energy Plc in October 2019 after coming under fire for illegal activity in Virunga.
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.
JKX Oil & Gas Limited is a private British company engaged in the exploration and production of hydrocarbons in Ukraine and Hungary. The company's headquarter is located in London, United Kingdom. The key operating subsidiaries of the company are located in Ukraine and Hungary.
Heritage Oil is an independent Jersey-based oil and gas exploration and production company. Its activities are focused on Africa, the Middle East and Russia. In June 2014, the company was acquired by a fund owned by the former chief executive of Qatar's sovereign wealth fund.
Oando Plc is a Nigerian multinational energy company operating in the upstream, midstream and downstream.
Ophir Energy plc was an oil and gas exploration and production company based in London. It owned both operating and non-operating assets in Africa, Asia, and Mexico.
Vanoil Energy is a multinational corporation that was active in oil exploration in Kenya and Rwanda but headquartered in Vancouver, British Columbia. The company was founded in September 2009 as a spin off of Vangold Resources' oil and gas assets, which at the time consisted of exploration and evaluation rights in Kenya and Rwanda and a farmout agreement on a well in Alberta, though the farmout agreement expired in 2011. The company pursued seismic exploration activities in both Kenya and Rwanda with funds received through stock offerings. Vanoil's involvement in Rwanda ended in 2013 with the expiry of their exploration and evaluation contract with the Rwanda government. After Kenya refused to extend its agreements with Vanoil's after they expired Vanoil entered in international arbitration in 2014 seeking compensation for losses However, on 1 October 2014, Vanoil announced that it had commenced international arbitration against the Government of Kenya.
The Galata gas field is a natural gas field located on the continental shelf of the Black Sea approximately 25km Southeast of Varna, Bulgaria. The field was the first to be developed offshore Bulgaria, and at peak production provided more than 16% of Bulgaria's domestic gas needs, the platform and associated infrastructure is still the only production facility located in the Bulgarian Black Sea.
The Kaliakra gas field is a natural gas field located on the continental shelf of the Black Sea located approximately 30km Southeast of Varna, Bulgaria. It was discovered by Melrose Resources plc in 2007 and brought on production in November 2010 through a subsea wellhead and tie-back pipeline to the Galata field platform infrastructure to the West.
Cove Energy plc, also known as Cove, was a London-headquartered oil and gas exploration company with assets in East Africa. The company was created in June 2009. In 2012, following significant gas discoveries offshore Mozambique, Royal Dutch Shell and PTT Exploration and Production (PTTEP), a subsidiary of Thailand's national oil company PTT Public Company Limited, engaged in a prominent bidding war to acquire Cove. Ultimately, the company was sold in August 2012 to PTTEP.
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.
