Dan oil field

The Dan oil field is a large oil and associated gas field in the Danish sector of the North Sea, about 200 kilometres (120 mi) west of Esbjerg.

Dan oil field
CountryDenmark
Location/blocks7.3
LocationDanish sector North Sea
Offshore/onshoreOffshore
OperatorMaersk Oil
Field history
Discovery1971
Start of development1971
Start of production1972
Peak of production10,000 bopd
Peak year1977
Production
Peak of production (oil)10,000 barrels per day (~5.1×10^5 t/a)
Estimated oil in place125 million barrels (~1.74×10^7 t)
Recoverable gas1,200×10^9 cu ft (34×10^9 m3)
Producing formationsUpper Cretaceous chalk

The field

The Dan field was discovered in May 1971 by the Britannia oil rig in Denmark Block 7.3 of the North Sea.[1] The reservoir is an Upper Cretaceous Danian chalk at a depth of 5,800 to 6,400 feet (1,768 to 1,951 metres). The oil has an API gravity of 30.4 and a gas oil ratio of 600 standard cubic feet per barrel (scf/bbl). The estimated recoverable reserves are 90–125 million barrels (14.3–19.9 million cubic metres) of oil and 1.2–1.3 trillion cubic feet (34–37 billion cubic metres) of gas.[1]

Development

The field was developed in phases through multi-platform installations, summarized as follows:[1][2][3]

Dan field installations
Platform Function Configuration Type Legs Well slots Installed Production start Production to
Dan A Wellhead drilling Bridge linked Steel Jacket 4 6 September 1971 July 1972 Dan B
Dan B Processing Steel Jacket 4 1972 July 1972 Oil to Gorm C; Gas to Tyra
Dan C Separator and Flare Steel Jacket 3 1972 July 1972
Dan D Wellhead drilling Steel Jacket 4 6 March 1975 1976 Dan B
Dan E Wellhead drilling Stand alone Steel Jacket 4 6 April 1976 1977 Dan B (pipeline)
Dan FA Wellhead drilling Bridge linked Steel Jacket 1986 Dan FC
Dan FB Wellhead drilling Steel Jacket 1986 Dan FC
Dan FC Processing Steel Jacket 1986 Oil to Tyra; gas to Gorm
Dan FD Flare Steel Jacket 1992
Dan FE Wellhead Dan FC
Dan FF Wellhead and processing Steel Jacket
Dan FG Processing Steel Jacket 2004


Production of condensate (in 1000s of barrels) was:[1]

See also

References

  1. Oilfield Publications Limited (1985). The North Sea Platforms Guide. Ledbury UK: Oilfield Publications Limited. pp. 144–52.
  2. "MAERSK OIL ENVIRONMENTAL AND SOCIAL IMPACT STATEMENT – DAN" (PDF). ens.dn. 2015. Archived (PDF) from the original on 2021-10-04. Retrieved 4 October 2021.
  3. "DUC in the North Sea". Archived from the original on 2021-10-04. Retrieved 4 October 2021.

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