North Sea oil is a mixture of hydrocarbons, comprising liquid petroleum and natural gas, produced from petroleum reservoirs beneath the North Sea.
Yibal is the largest oilfield in Oman, located in the Ad Dhahirah Governorate, about 360km southwest of Muscat. It began production in 1968, and at its peak had a production of nearly 250,000 barrels per day (40,000 m3/d). In recent years, it has begun to decline, and in 2005 produces about 88,000 barrels per day (14,000 m3/d). The Yibal oil field is operated primarily by Petroleum Development Oman.
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.
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.
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.
Oil and Gas Development Company Limited, commonly known as OGDCL is a Pakistani oil and gas company. It has a primary listing on the Pakistan Stock Exchange, and secondary listing on the London Stock Exchange. Established in 1961 by the Government of Pakistan, it was turned into a public listed company on 23 October 1997. Today it is involved in exploring, drilling, refining and selling oil and gas in Pakistan. It is based on Jinnah Avenue, Blue Area in Islamabad, with the Government of Pakistan holding 74% stake in the company. Rest are held by private investors. For the financial year 2022, it reported net sales of Rs 335.46 billion and profit of Rs 133.78 billion.
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.
Prudhoe Bay Oil Field is a large oil field on Alaska's North Slope. It is the largest oil field in North America, covering 213,543 acres (86,418 ha) and originally contained approximately 25 billion barrels (4.0×109 m3) of oil. The amount of recoverable oil in the field is more than double that of the next largest field in the United States by acreage (the East Texas Oil Field), while the largest by reserves is the Permian Basin (North America). The field was operated by BP; partners were ExxonMobil and ConocoPhillips until August 2019; when BP sold all its Alaska assets to Hilcorp.
JKX Oil & Gas plc is a British-based hydrocarbon exploration and production company, listed on the London Stock Exchange. JKX operates primarily in Russia and Ukraine, but has a presence in six other countries in Europe and North America. In June 2011, VTB Capital plc, a subsidiary of Russian state bank VTB, increased its share in JKX Oil & Gas to 6.4%. The deal makes VTB bank the fourth largest shareholder in the company. Ihor Kolomoyskyi, the co-owner of Privat Group, remains the largest shareholder in JKX with a 27.06% stake.
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.
The East Midlands Oil Province, also known as the East Midlands Petroleum Province, covers the petroliferous geological area across the north-eastern part of the East Midlands of England that has a few small oil fields. The largest field in the province is the Welton oil field, the second largest onshore oil field in the UK.
Oando Plc is a Nigerian multinational energy company operating in the upstream, midstream and downstream.
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.
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.
The Magnus oilfield is a large oilfield in the United Kingdom's zone of North Sea. It is located 160 kilometres (99 mi) north-east of the Shetland Islands. The field is located mainly in Block 211/12a. Resources are estimated to total 1.54 billion barrels of oil, of which 869 million barrels are recoverable reserves.
The Bentley Oil Field is a heavy oil field located on the East Shetland Platform in the UK Northern North Sea, 8 kilometres (5.0 mi) southeast of the Bressay Field, 15 kilometres (9.3 mi) east of the Kraken Field and 20 kilometres (12 mi) north-northeast of the Bruce Field.
Xcite Energy was an oil company based in the United Kingdom. The company's main asset is the Bentley Heavy Oil Field in the North Sea, although it also has a number of smaller assets included in License P.1979, located near to the Bentley Oil Field.
Rockhopper Exploration PLC is an oil and gas exploration company headquartered in Salisbury, Wiltshire, United Kingdom. It owns offshore exploration and production licences in the North Falkland Basin in the waters north of the Falkland Islands.
The Thistle oil field is a large oil field in the northern sector of the North Sea. The oil field, discovered in September 1972 by Signal Oil and Gas Company, is produced over the Thistle Alpha platform, located 125 nautical miles northeast of Sumburgh, Shetland Islands and 275 nautical miles Northeast of Aberdeen, Scotland.
$1,839.1 million (2022) [1] 
$(41.2) million (2022) [1] 