Dan oil field

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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 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.

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. ^ a b c d 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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