North Sea oil is a mixture of hydrocarbons, comprising liquid petroleum and natural gas, produced from petroleum reservoirs beneath the North Sea.
Ormen Lange is a natural gas field on the Norwegian continental shelf. It is situated 120 kilometres (75 mi) northwest of Kristiansund, where seabed depths vary between 800 and 1,100 metres. The field is named after the famous longship Ormen Lange of Olaf Tryggvason, a 10th-century Viking king of Norway.
A floating production storage and offloading (FPSO) unit is a floating vessel used by the offshore oil and gas industry for the production and processing of hydrocarbons, and for the storage of oil. An FPSO vessel is designed to receive hydrocarbons produced by itself or from nearby platforms or subsea template, process them, and store oil until it can be offloaded onto a tanker or, less frequently, transported through a pipeline. FPSOs are preferred in frontier offshore regions as they are easy to install, and do not require a local pipeline infrastructure to export oil. FPSOs can be a conversion of an oil tanker or can be a vessel built specially for the application. A vessel used only to store oil is referred to as a floating storage and offloading (FSO) vessel.
Ekofisk is an oil field in block 2/4 of the Norwegian sector of the North Sea about 320 km (200 mi) southwest of Stavanger. Discovered in 1969 by Phillips Petroleum Company, it remains one of the most important oil fields in the North Sea. This was the first discovery of oil after the drilling of over 200 exploration wells in the North Sea "triggered" by the Groningen gas field discovery. In 1971, Phillips started producing directly to tankers from four subsea wells. Oil production is planned to continue until at least 2050.
The Dunlin oilfield is situated 195 km northeast of Lerwick, Shetland, Scotland, in block number 211/23a and 211/24a. It was originally operated by Shell but was sold in 2008 and is now operated by Fairfield Energy and partners MCX.
Kashagan Field is an offshore oil field in Kazakhstan's zone of the Caspian Sea. The field, discovered in 2000, is located in the northern part of the Caspian Sea close to Atyrau and is considered the world's largest discovery in the last 30 years, combined with the Tengiz Field. When discovered, it was the second largest oil field in the world.
The Clair oilfield is an offshore oil field in Scottish territorial waters 75 kilometres (47 mi) west of Shetland in water depths of up to 140 metres (460 ft). The field is the largest oilfield on the UK Continental Shelf with an estimated 8 billion barrels of oil-in-place, according to the BP Plc's website. It extends over an area of some 220 square kilometres (85 sq mi), covering five licence blocks.
Azeri–Chirag–Gunashli or Azeri–Chirag–Deepwater Gunashli is a complex of oil fields in the Caspian Sea, about 120 kilometres (75 mi) off the coast of Azerbaijan. It consists of the Azeri and Chirag oil fields, and the deepwater portion of the Gunashli oil field. An overall estimate of the area of the development is 432.4 square kilometres (167.0 sq mi). It is developed by the Azerbaijan International Operating Company, a consortium of international oil companies, and operated by BP on behalf of the consortium. The ACG fields have estimated recoverable reserves of about 5 to 6 billion barrels of petroleum. Peak oil production of 885,000 barrels per day (140,700 m3/d) was reached in 2010. However by the first quarter of 2024 production had fallen to 339,000 barrels per day (53,900 m3/d), or approximately one-third of peak value, as the development continued terminal decline. As of 2021, ACG oil accounted for 95% of all Azerbaijani oil exports.
Valhall is an oil field in the Norwegian sector of the North Sea. Discovered in 1975, production began in 1982 and is expected to continue until 2050. Valhall is located in 70 metres of water. It produces from chalk in the Tor and Hod Formations of Late Cretaceous age. The reservoir depth is approximately 2 400 metres.
Norpipe is a subsea oil and natural gas pipelines system in the North Sea. It supplies oil from the Norwegian Ekofisk and associated fields in the North Sea to the United Kingdom and natural gas to Germany.
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.
Foinaven oilfield is a deep-water oil development approximately 190 kilometres (120 mi) west of the Shetland Islands. Together with Schiehallion, Loyal, Solan, Clair and Lancaster fields it forms the area generally termed as the West of Shetland.
Grane is an offshore oil field in the North Sea located 185 km (115 mi) west of the city of Haugesund on the western coast of Norway. It is Norway's first heavy crude oil production field and Statoil's largest heavy oil field in the Norwegian continental shelf. The oil from the field, located in Block 25/11 is transported to Sture terminal via Grane oil pipeline. The injection gas is imported to Grane oil field from the Heimdal, located just north the field.
Oselvar is a subsea oil field, abandoned since April 2018, located 250 km (160 mi) southwest of Stavanger in the southern Norwegian section of the North Sea, close to the British border. Oselvar was discovered in 1991. The field is located at 23 kilometres (14 mi) distance from the Ula field to which it was tied back. The original estimated reserves at Oselvar were 38 million barrels of oil and 4 billion cubic metres of natural gas. The water depth at location is 72 metres (236 ft). In January 2022, DNO ASA reportedly had approval from Norway’s Petroleum Safety Authority (PSA) to remove subsea facilities from the Oselvar field. The Oselvar field installations were to be decommissioned by the end of 2022.
Gyda is an offshore oil field located in the southern Norwegian section of the North Sea, along with the Ula, Tambar and Tambar East fields making up the UGT area, usually attributed to DONG Energy's main areas of exploration and production activity. The Gyda field was discovered in 1980 and started producing on June 21, 1990. The field contains confirmed 39.6 million m3 of oil and 6.6 billion cubic meter of natural gas.
Tambar is an offshore oil field located in the southern Norwegian section of North Sea along with Ula and Gyda fields making up the UGT area, usually attributed to DONG Energy's main areas of exploration and production activity. The Ula field was discovered in 1983 and came online in 2001. Tambar was discovered in 1983 and became operational in July 2001. It contains confirmed 46.9 million m3 of oil.
Blane is an offshore oil field located in the southern Norwegian and northern British sectors of North Sea. The Blane facilities are located on the British continental shelf and are tied to the Ula field which is located 34 km (21 mi) to the northeast via subsea pipeline. The field was discovered in 1989 and produces high quality oil.
Aker BP ASA is a Norwegian oil exploration and development company focusing petroleum resources on the Norwegian Continental Shelf. It is present all over Norway. The headquarters are in Fornebu with additional offices in Trondheim, Stavanger and Harstad. The company employs a staff of more than 2,400.
