Centrica plc is a British multinational energy and services company with its headquarters in Windsor, Berkshire. Its principal activity is the supply of electricity and gas to consumers in the United Kingdom and Ireland.
Petróleo Brasileiro S.A., better known by the portmanteau Petrobras, is a state-owned Brazilian multinational corporation in the petroleum industry headquartered in Rio de Janeiro, Brazil. The company's name translates to Brazilian Petroleum Corporation — Petrobras.
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.
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.
Peregrino is an oil field located offshore of Brazil, east of Rio de Janeiro, in the southwest part of the Campos Basin area with about 2.3 billion barrels of oil in place within the sanctioned area. The oil field was discovered in 2004 and was formerly known as Chinook.
Sinochem Corporation is a Chinese state-owned multinational conglomerate primarily engaged in the production and trading of chemicals and fertilizer and exploration and production of oil for civilian and military purposes. Its majority owned fertilizer subsidiary Sinofert is involved throughout the chain from production of the product and procurement on international markets to distribution and retail.
Dana Petroleum plc 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.
Hardy Oil and Gas plc is a leading British-based oil and gas exploration and production business. It is headquartered in Aberdeen and is a former constituent of the FTSE 250 Index.
Shaanxi Yanchang Petroleum Group is a Chinese conglomerate mainly engaged in the exploration, production, transportation, and sale of petroleum and natural gas, and in addition the production and sales of petrochemical products. Founded in 1905, it is the fourth largest oil producer in the country. Almost all its reserves and refineries are located in Shaanxi.
Pioneer Natural Resources Company is an American company engaged in hydrocarbon exploration headquartered in Irving, Texas. It operates in the Cline Shale, which is part of the Spraberry Trend of the Permian Basin, where the company is the largest acreage holder.
Perenco is an independent Anglo-French oil and gas company with a headquarters in London and Paris. It conducts exploration and production activities in 16 countries around the globe.
Soyuzneftegaz – international investment group of companies headquartered in Russia involved in oil and gas exploration and production, as well as construction. It is founded and headed by Yuri Shafranik, Chairman of the Board of the Union of Oil and Gas Producers of Russia. The Interstate Bank of CIS holds 30% and SNG Holding holds 70% of shares.
Petrobank was an oil exploration, development, and production company based in Calgary, Canada. It operates through 4 units/subsidiaries, PetroBakken Energy in Canada, Petrominerales Ltd in Peru and Colombia, HBU in the heavy crude oil business, and its technology unit Archon Technologies Ltd . In 1986 the company changed its name from Petrobank Energy Resources Ltd. to Petrobank Energy and Resources Ltd. Though it has a significant resource base its ten patents for heavy oil extracting technology are becoming increasingly valuable to the company. In December 2010 the company received permission from the government of Alberta to produce oil sands bitumen at a new location in Dawson using a technique known as fireflooding, the third Petrobank operation that will use it; the 50% interest in Dawson was acquired in October from Shell Canada.
Frontera Energy is a Canadian petroleum exploration and production company in the business of heavy crude oil and natural gas. Its focus is on Colombia and Peru where it holds numerous properties including 38 blocks in the Llanos, Sucre-Co Lower Magdalena and Cesar Valley, Rancheria, Upper and Middle Magdalena Valley, Putumayo Valley, Ucayali and Maranon basins. In early 2010 it was the largest independent oil company operating in South America and in terms of private companies the fastest growing one in Colombia. In 2011 it was responsible for 41% of the growth in oil production in Colombia. In mid-2015 it changed its name from Pacific Rubiales to Pacific Exploration and Production, signalling the diminished importance of the Rubiales oil field in Colombia in the company's total assets and a broader focus in Latin America. When Pacific Exploration and Production filed for bankruptcy protection on April 27, 2016, it listed Pacific E&P Holdings Corp., Meta Petroleum Corp., Pacific Stratus International Energy Ltd., Pacific Stratus Energy Colombia Corp., Pacific Stratus Energy S.A., Pacific Off Shore Peru S.R.L., Pacific Rubiales Guatemala S.A., Pacific Guatemala Energy Corp., PRE-PSIE Coöperatief U.A., Petrominerales Colombia Corp. and Grupo C&C Energia (Barbados) Ltd. as subsidiaries. In June 2017, it renamed itself Frontera Energy, and was relisted on the Toronto Stock Exchange.
Circle Oil was an oil and gas exploration and production company based in Limerick in the Republic of Ireland. Its operations, all of which were in North Africa, specifically Egypt, Morocco and Tunisia, initially focused on oil exploration but expanded to include production.
San Leon Energy plc is an independent oil and gas exploration company and is Europe's leading shale gas company by acreage. San Leon has built up a portfolio of assets located in Poland, Morocco, Western Sahara, Albania, Ireland, Spain and Italy. The company's portfolio across these geographies is made up of both conventional exploration and shale assets.
The petroleum industry in Colombia is an important contributor to the country's economy.
The Rubiales Oil Field is an oil field located in the Llanos Basin, Meta Department, Colombia. It was discovered in 1981 and was first developed, operated and owned by Pacific Rubiales Energy. The field produces heavy oil (11.3-14.5° API) from the C7 unit of the Carbonera Formation. The porosity of the reservoir formation is between 28 and 33% and the permeability ranges from 3 to 5 Darcies. In 2008, 22.817.163 barrels were produced from the field. The total proven reserves of the Rubiales oil field are 4.38 billion barrels (588×106tonnes), and production in 2017 is 132,000 barrels per day (21,000 m3/d).
The Llanos Basin or Eastern Llanos Basin is a major sedimentary basin of 96,000 square kilometres (37,000 sq mi) in northeastern Colombia. The onshore foreland on Mesozoic rift basin covers the departments of Arauca, Casanare and Meta and parts of eastern Boyacá and Cundinamarca, western Guainía, northern Guaviare and southeasternmost Norte de Santander. The northern boundary is formed by the border with Venezuela, where the basin grades into the Barinas-Apure Basin.
Diversified Energy Company plc, formerly Diversified Gas & Oil plc, is a gas and oil production company operating in the Appalachian Basin in the United States. It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index.
