North Sea

A North Sea field is one or numerous oil and gas discoveries combined which the licensees or operators have decided to develop, and for which the authorities have authorised a plan for development and operation (pdo) or granted a pdo exemption. Since first oil was produced and started in 1971, gas, oil and condensate have been produced from a whole of 106 North Sea fields on the Norwegian shelf. At the end of 2018, 83 fields have been in production: sixty three in the north sea, 18 in the norwegian sea and a pair of field inside the barents sea.

Engineering, Design and Analysis of Subsea Foundation Structures

Prosjektering, Design og Analyser av Undervanns Fundament Strukturer

One of the new offshore developments that commenced out producing in 2018, Aasta Hansteen, while a further 14 have been although still under development. Many of the producing fields are getting older, however a number of them nevertheless have significant remaining reserves that continue to be explored. Furthermore, the aid base in those offshore fields increases when small discoveries in the vicinity are tied in to current infrastructure.

North Sea Field Developments

  • Brage by Equinor
    Brage is an oil field with some gas. The Brage platform is an integrated accommodation, processing and drilling installation on a steel jacket. The field started operating in 1993 and reached top production in 1998 at 120,000 barrels of oil per day. Brage currently produces 25,000 barrels per day. Transport The oil is transported in a pipeline to Oseberg ...
  • NUGGETS by Total
    field is located in blocks 3/18c, 3/19a, 3/19b, 3/20a, 3124a, 3/24c and 3125a in the UK sector of the northern North Sea, south of Dunbar, where the water depth is 120m. NUGGETS, North Sea, Total, Europe(North),
  • Kristin Deepwater by Equinor
    Four subsea templates installed on Kristin will be tied back to a floating production platform with a daily production capacity of 126,000 barrels of condensate and just over 18 million cubic metres of rich gas. The reservoir lies almost 5,000 metres beneath the seabed, and is due to be drained through 12 subsea wells. The ...
  • Morpeth by British Borneo
    The Morpeth project received official sanction from British-Borneo in February 1997. Model tests were executed in April, and first steel was cut in July. The keel was laid in October and the pile foundations were installed in November. The hull was loaded out in mid-July 1998 and installed using McDermott’s DB50 derrick barge in DP ...
  • Tyrihans by Equinor
    field is located on the Haltenbank in the Norwegian Sea, 35km southeast of the Kristin field in roughly 285m of water. The discovery comprises two structures – Tyrihans North and Tyrihans South. Tyrihans, North Sea, Equinor, Europe(North),
  • Shearwater by Shell
    field lies in the Central Graben area of the central North Sea, approximately 200km east of Aberdeen in 90m (995ft) of water. Shearwater, North Sea, Shell, Europe(North),
  • Snøhvit Gas by Equinor
    gas field development comprises three fields – Snøhvit, Albatross and Askeladd. These lie in the Barents Sea, about 140km north-west of Hammerfest in northern Norway. The fields were discovered in 1984 in 250m to 345m of water. Snøhvit Gas, Barents Sea, Equinor, Europe(North),
  • Hanze F2A by Veba Oil Netherlands
    lies in block F/2 in the Dutch sector of the North Sea, about 200km north-west of Den Helder. The field has reserves exceeding 34 million barrels of oil, as well as 40bcf of associated gas. Hanze F2A, North Sea, Veba Oil Netherlands, Europe(North),
  • R Block Development-Renee by ConocoPhillips
    development is located approximately 200km north-east of Aberdeen. Renee lies in 146m of water, 21.6km from the AH001. Rubie lies in a water depth of 148m, 5.6km away from Renee. R Block Development-Renee, North Sea, ConocoPhillips, Europe(North),
  • Gungne by Equinor
    Gungne is a satellite to Sleipner East in the North Sea. This reservoir was discovered in 1982, and began producing on 21 April 1996 through a well drilled from the Sleipner A platform. Measuring 7,377 metres in horizontal offset from Sleipner A, this well represented a record for Statoil at the time. It has a total measured depth ...
  • Alba Phase II by ChevronTexaco
    in North Sea Block 16/26, 130 miles north-east of Aberdeen, came on stream in January 1994. In the first phase a platform was installed in the north of the field exporting oil by tanker via a floating storage unit (FSU). Alba Phase II, North Sea, ChevronTexaco, Europe(North),
  • Elgin Franklin by Total
    fields lie in the UK North Sea’s Central Graben, approximately 240km east of Aberdeen and in water 93m deep. Elgin is located in blocks 22/30b, 22/30c and 29/5b. Elgin Franklin, North Sea, Total, Europe(North),
  • Jotun by Exxonmobil
    is located on the Utsira High, between the Balder and Heimdal fields, approximately 200km west of Stavanger. Average water depth in the field area is 126m. Geologically, Jotun consists of the Elli, Elli South and Tau West structures. Jotun, North Sea, Exxonmobil, Europe(North),
  • Sleipner West by Equinor
    This field was discovered in 1974, and lies in Norwegian North Sea blocks 15/6 and 15/9. Production of gas and condensate (light oil) began in August 1996. The gas is exported in Norway’s transport network for sales gas, while condensate is carried in the pipeline to the Kårstø processing plant north of Stavanger. Condensate is exported from Kårstø ...
  • Vixen by ConocoPhillips
    originally known as E-Plus; however, the name change to Vixen represents Conoco’s continued use of the "V" motif and its practice of naming many of its natural gas fields in the southern sector of the U.K. Vixen, North Sea, ConocoPhillips, Europe(North),
  • Mars by Shell
    The initial development was designed to recover about 500 million barrels of oil equivalent. The development for the initial project phase is approximately $1.0 billion. About 55% of the project costs were spent on the fabrication and installation of the hull, deck, facilities and pipelines. The other 45% of the project costs are to be ...
  • Canyon Express by Total
    Canyon Express is a unique development not only for its depth and technical merits, but for the way three producers from three fields have come together to produce fields that would otherwise have been too marginal to be viable. The project connects to three separate deep water gas fields in the Mississippi Canyon and Desoto ...
  • Laminaria by Woodside
    is located in the Timor Sea, 550km north-west of Darwin. Water depths increase from 50m to 300-400m near Laminaria and 400-500m over Corallina, before deepening to over 2,000m further north in the Timor Trough. Laminaria, Timor Sea, Woodside, Asia,
  • Sigyn Gas by Esso
    Sigyn gas field is located in block 16/7 in the Norwegian North Sea. The discovery well is 12km south-east of the Sleipner A platform. Sigyn field was discovered in 1982. Esso Norway operates the field, with a 40% interest. Statoil holds a 50% interest, while Norsk Hydro holds the 10%. In 2001, Statoil signed NOK375 ...
  • Hoover Diana by ExxonMobil
    The $1.2-billion project to codevelop these two fields will produce peak rates of 100,000 bopd and 325 MMcfd gas. ExxonMobil (66.7%) is the operator; BP Amoco holds the remaining 33.3%. The development utilizes a Deep Draft Caisson Vessel (DDCV) located over Hoover. The 83-story-tall DDCV floats vertically and is nearly "half a football field in diameter," ...
  • Ekofisk II by ConocoPhillips
    area development consisted of eight oil and gas fields, namely Cod, Ekofisk, West Ekofisk, Tor, Albuskjell, Eldfisk, Edda and Embla. This complex also formed a transportation hub for Valhall, Hod, Gyda, Ula, Statfjord, Heimdal, Tommel Ekofisk II, North Sea, ConocoPhillips, Europe(North),
  • Britannia by ConocoPhillips
    field discovered in the mid 1970s, is the first in the UK sector of the North Sea to be operated jointly by two companies, Conoco and Chevron, through the formation of the new operating company, Britannia Operator Limited. Britannia, North Sea, ConocoPhillips, Europe(North),
  • Vilje by Equinor
    1 August 2008, the first oil flowed from the Vilje field to the Alvheim floating production, storage and offloading vessel (FPSO). The Vilje field is located in the northern part of the North Sea, north of the Heimdal field. Equinor is the operator of the field, with a 28.85 percent interest. Vilje is the first Equinor-operated field ...
  • Clair by BP
    The Clair field is located 47 miles west of Shetland in approximately 140 meters of water and was considered the largest undeveloped resource on the UK Continental Shelf (It covers an area of 220 square kilometers)until the late 1980’s. The Clair field covers five license blocks – 206/7a; 206/12; 206/8; 206/13a; and 206/9. The first phase ...
  • Shtokman Gas Condensate Deposit Barents Sea by Sevmorneftegas
    An appraisal drilling programme was carried out between 1990 and 1995, and following this, a production sharing system was signed in 2000 by the Russian government. The licensee is Sevmorneftegaz, which is owned by the companies Rosneft (state) and Gazprom (state/private). In late 2004 and early 2005, preliminary agreements were signed with ChevronTexaco, ConocoPhillips, ExxonMobil, ...
  • Genesis by ChevronTexaco
    Genesis – the production facility comprises a floating cylindrical hull (SPAR) moored to the seabed with integrated drilling facilities and a capacity of 20 wells. Oil and gas is exported via a newly built 49-kilometre, 14-inch pipeline to the South Timbalier 301B platform where it joins a 24-inch trunkline to shore. Developing the Genesis field began ...
  • Manatee by Shell
    Manatee is expected to recover in excess of 12 million barrels of oil equivalent, with peak production rates potentially reaching up to 25,000 barrels of oil per day. Production began during the third quarter of 2002, with peak production rates reaching up to 25,000 barrels of oil per day. Manatee will be the fourth subsea ...
  • Goliat by ENI
    The Goliat oil discovery is located 85 km north-west of Hammerfest and 50 km southeast of the Snøhvit field and the drilling is being undertaken by the semi-submersible drilling rig "Erik Raude". The water depth is 341 meters and the well has reached a depth of approximately 2.400 meters. Planned total depth is 2.700 meters. Goliat, ...
  • Triton by Amerada Hess
    The three Triton fields lie in the North Sea, 190km east of Aberdeen. They are being developed using an FPSO, located approximately 20km away from the Bittern field and 12km from the Guillemot West field, via subsea pipelines. Triton, North Sea, Amerada Hess, Europe(North),
  • Fram by Equinor
    The Fram oil finds in the North Sea comprise the Fram West and Fram East fields. The fields are located about 20 kilometers north of the Troll field at a depth of approximately 350 meters. Both field developments consist of subsea installations connected via pipelines to the Troll C platform. The well streams from the fields are ...