South Arne oil and gas field

Last updated
South Arne oil and gas field
CountryDenmark
RegionNorth Sea
Location/blocks5604/29 &30
Offshore/onshoreOffshore
Coordinates56.07835°N 4.22886°E
OperatorsHess (until 2021), Ineos (since 2021)
OwnerHess; DONG; Noreco; and Danoil (initially); Ineos (since 2021)
Field history
Start of production1999
Peak of production2,558,000 cubic metres oil/year
Production
Producing formationsChalk

The South Arne (Danish: Syd Arne) field is a major crude oil and associated gas production field in the Danish sector of the central North Sea. Production of oil and gas started in 1999, and peak oil and gas was in 2000.

Contents

The field

The characteristics of the South Arne field reservoir are as follows. [1]

FieldSouth Arne
ReservoirChalk
Geological ageDanian and Upper Cretaceous
Offshore Block5604/29 &30
Reservoir depth2,800 m
Reservoir pressure and temperature434 bar and 90°C.
Field delineation93 km2
ReservesOil 12.9 million m3

Gas 2.6 billion Normal m3

Discovered1969

Owners and operators

The field was originally owned jointly by Hess 57.48%; DONG 34.58%; Noreco 6.56%; and Danoil 1.58%. [2] It was operated by Hess. In 2021 Hess Denmark sold its interests in South Arne to Ineos E&P for $150 million. [2]

Infrastructure

The field was initially developed through a single offshore installation (SA), two further field installations (WHPE and WHPN) were commissioned in 2013. [3]   [1] Details are summarised below.

South Arne installations
NameSouth Arne (SA)WHPE Wellhead platform East (SA WHPE)WHPN Wellhead platform North (SA WHPN)
Coordinates56.07835°N 4.22886°E56.07823°N 4.230876°E56.09574°N 4.219251°E
Production start199920132013
Water depth60 m6060
InstallationConcrete gravity base and steel lattice drilling towerFixed steelFixed steel
AccessHelicopterBridge link to South ArneHelicopter
FunctionWellhead, process, accommodation (57 beds)WellheadsWellheads
Substructure weight tonnes112,8002,2242,333
Topsides weight tonnes8,9551,9321,762
Number of wells14 oil production, 7 water injection126
Export, liquidsTo subsea oil storage then by single anchor leg mooring (SAL) to tankerTo South ArnePipeline Bundle to WHPE (production P/L, lift gas and water injection)
Export, gas285 km 24-inch pipeline to NyhroTo South Arne


The subsea oil tank has a capacity of 87,000 m3 (547,230 barrels). It is 110 m by 90 m by 18 m high. [4] The single anchor leg mooring (SAL) is located 2 km (56.09247°N 4.25615°E) from the South Arne installation. [4]

Hejre tie back

There are plans to tie-in the Hejre platform into South Arne WHPE. This would be via a 30 km 10-inch or 12-inch multiphase pipeline. South Arne has sufficient capacity to process the Hejre fluids. [5]

Production

Production facilities comprise a single three-stage oil/gas/water separator train capable of processing 50,000 barrels of oil per day (8,065 m3/day), 2 million m3 of gas per day, and 100,000 barrels of water per day (16,129 m3/day), The gas compression is a single four-stage train. [4]

Production from the South Arne field is aided by water injection for pressure support. [1] Some produced water is injected into the reservoir, the remainder is treated and discharged overboard. Injection water is treated to remove sulphate ions prior to injection. [2]

The oil and gas production profile of the South Arne field is as shown in the tables.

South Arne annual oil production (1000 m3) and gas production (million Normal m3) 2013-2022 [6]
Year2013201420152016201720182019202020212022Total
Oil7001,0231,03094677457056547940834729,802
Gas1672383073702811871671321081087,665
South Arne annual oil production (1000 m3) and gas production (million Normal m3) 1999-2012 [6]
Year19992000200120022003200420052006200720082009201020112012
Oil7572,5582,0312,3132,3832,2572,3711,8691,2451,1391,1641,0661,004803
Gas167713774681544461485366234225271248238194

See also

Related Research Articles

In the oil industry, waterflooding or water injection is where water is injected into the oil reservoir, to maintain the pressure, or to drive oil towards the wells, and thereby increase production. Water injection wells may be located on- and offshore, to increase oil recovery from an existing reservoir.

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.

The Dalia Oil Field is an oil field in deepwater block 17, 135 kilometres (84 mi) off the coast of Cabinda, Angola. The field lies in water depths varying between 1,200 and 1,500 metres. Dalia oil field was discovered in September 1997 and brought into production in December 2006.

The South Pars/North Dome field is a natural-gas condensate field located in the Persian Gulf. It is by far the world's largest natural gas field, with ownership of the field shared between Iran and Qatar. According to the International Energy Agency (IEA), the field holds an estimated 1,800 trillion cubic feet of in-situ natural gas and some 50 billion barrels of natural gas condensates. On the list of natural gas fields it has almost as much recoverable reserves as all the other fields combined. It has significant geostrategic influence.

Ku-Maloob-Zaap is an oil field in Mexico. It is made up of three relatively large fields, Ku, Maloob, and Zaap, which are located to the immediate northwest of the Cantarell field. The field lies in 100 m (330 ft) of water.

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.

B3 is a major oil and gas field in the Baltic sea. The field is located 80 km north of the Polish coastal town Rozewie. The crude oil is also referred to as Rozewie crude. Processing, drilling and accommodation is based on the jack up rig Baltic Beta located in the field. Most of the oil is shipped by tanker to the Gdańsk refinery as a part of the refinery feedstock. The associated gas is transmitted by pipeline to the combined heat and power (CHP) plant in Wladyslawowo.

<span class="mw-page-title-main">North West Shelf Venture</span> Oil and gas project in the north west of Western Australia

The North West Shelf Venture, situated in the north-west of Western Australia, is Australia's largest resource development project. It involves the extraction of petroleum at offshore production platforms, onshore processing and export of liquefied natural gas, and production of natural gas for industrial, commercial and domestic use within the state.

The Hutton oil field, located on the UK continental shelf, was the location for the first ever production Tension Leg Platform (TLP).

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.

<span class="mw-page-title-main">Tyra Field</span>

Tyra Field is the largest gas condensate field in the Danish Sector of the North Sea. It was discovered in 1968 and production started in 1984. The field is owned by Dansk Undergrunds Consortium, a partnership between Total, Noreco and Nordsofonden, and operated by Total. The reservoir depth is about 2,000 metres (6,600 ft) and it covers area of 90 kilometres (56 mi) in the water depth of 37–40 metres (121–131 ft). The Tyra field has a number of satellite fields, including Roar, Svend and Tyra Southeast fields.

Gorm is a natural gas and oilfield in the Danish Sector of North Sea. It was discovered in 1971 and is the largest oilfield exploited by Denmark. The production infrastructure consists of five bridge-linked platforms and is operated by BlueNord. The facilities include two wellhead platforms and several processing platforms. The Rolf and Dagmar fields are satellites to Gorm.

Alwyn North is a major oil and gas field in the United Kingdom sector of the northern North Sea, 160 km east of the Shetland Islands. The field was developed through two bridge-linked offshore platforms and a number of subsea satellite wellheads. Alwyn North has been producing oil and gas since 1987 and is still (2023) in operation.

<span class="mw-page-title-main">Montrose oil field</span> UK offshore crude oil field

The Montrose oil field is a significant crude oil producing field in the UK sector of the central North Sea, 210 km east of Aberdeen. Production of oil started in 1976 and a major upgrade in 2016 extended the field life to beyond 2030.

The Beryl oil field is a major crude oil production field in the UK sector of the northern North Sea, 335 km north east of Aberdeen. Production of oil started in 1976 and the field is still producing oil and gas (2021).

The Argyll oil field is a depleted crude oil field in the UK sector of the central North Sea, 310 km east-south-east of Aberdeen. It was the first field to produce crude oil from the UK offshore continental shelf. Oil was produced between 1975 and 2020 through a series of floating and jack-up production installations. In later phases of development the field was known as Ardmore and then Alma. The adjacent Duncan and Innes fields also processed oil through the Argyll/Ardmore/Alma installation. Oil production from the field has now (2021) ceased.

The Skjold oil field is a crude oil and associated gas production field in the Danish sector of the central North Sea, close to the Danish-German median line. Production of oil started in 1982, peak oil was achieved in 1991 and production is expected to continue until 2038.

Halfdan is a significant oil and gas field in the south-western part of the Danish sector of the southern North Sea. The field has been in production since 1999. The Sif and Igor fields are satellites to Hallfdan.

The Siri oil field and its satellites, Nini and Cecille, are oil producing fields in the Danish sector of the southern North Sea. Operating since 1999 and 2003 they are the most northerly of Denmark's offshore oil assets located close to the Denmark-Norway median line.

The Harald field is a gas and associated condensate production field in the Danish sector of the central North Sea. Production of gas and liquids started in 1997, and peak gas was in 1998. The Lulita field is a satellite of the Harald field.

References

  1. 1 2 3 "Oil and gas production in Denmark 2013" (PDF). Retrieved 24 November 2023.
  2. 1 2 3 "A barrel full South Arne oil field" . Retrieved 24 November 2023.
  3. "OSPAR Inventory of Offshore Installations - 2021" . Retrieved 24 November 2023.
  4. 1 2 3 "South Arne Oil and Gas Project, Danish North Sea" . Retrieved 24 November 2023.
  5. "Hejre to South Arne Development Project" (PDF). Retrieved 24 November 2023.
  6. 1 2 "Danish Energy Agency. "Monthly and yearly production"" . Retrieved 24 November 2023.