The Dan oil field is a large oil and associated gas field in the Danish sector of the North Sea, about west of Esbjerg. Oil and gas are produced through a complex of offshore installations. The Kraka and Regnar fields are satellites to the Dan installations.
The field The Dan field was discovered in May 1971 by the Britannia oil rig in Denmark Block 7.3 of the North Sea. 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.
Development The field was developed in phases through multi-platform installations, summarized as follows:
+Dan field installationsPlatformFunctionConfigurationTypeLegsWell slotsInstalledProduction startProduction toDan AWellhead drillingBridge linkedSteel Jacket46September 1971July 1972Dan BDan BProcessingSteel Jacket4–1972July 1972Oil to Gorm C; Gas to TyraDan CSeparator and FlareSteel Jacket3–1972July 1972–Dan DWellhead drillingSteel Jacket46March 19751976Dan BDan EWellhead drillingStand aloneSteel Jacket46April 19761977Dan B (pipeline)Dan FAWellhead drillingBridge linkedSteel Jacket1986Dan FCDan FBWellhead drillingSteel Jacket1986Dan FCDan FCProcessingSteel Jacket–1986Oil to Tyra; gas to GormDan FDFlareSteel Jacket–1992–Dan FEWellheadDan FCDan FFWellhead and processingSteel JacketDan FGProcessingSteel Jacket–2004
Kraka and Regnar fields The Kraka and Regnar fields are satellites to the Dan installation. The characteristics of the fields are as follows. +Kraka and Regnar fieldsFieldKrakaRegnarProspectAnneNilsReservoirChalkChalkGeological ageDanian and Upper CretaceousUpper CretaceousCoordinates55.402045°N 5.078377°E55.385323°N 4.288464°EBlock5505/175505/17Reservoir depth1,800 m1,700 mField delineation81 km234 km2ReservesDiscovered19661979 The fields are developed through two offshore installations as shown. +Kraka and Regnar field InstallationsFieldKrakaRegnarProduction start19911993Water depth45 m45 mInstallationFixed steel no helideckSubsea steelFunctionWellheads no processingWellhead no processingSubstructure weight tonnes55050Topsides weight tonnes400-Number of wells81StatusProducing (2022) No production since 2006Export, well fluids9 km 8-inch pipeline to Dan FA13 km 8-inch pipeline to Dan FAImport, lift gas9 km 3-inch pipeline from Dan FA- The oil production profile of the Kraka and Regnar fields (in 1000 cubic metres) is as shown. +Kraka and Regnar annual oil production (1000 m3) 1991-2007Year19911992199319941995199619971998199920002001200220032004200520062007Kraka144205390491469340315314404350253157139199211222176Regnar1454298641274329143318191916110 +Kraka and Regnar annual oil production (1000 m3) 2008-2022Year200820092010201120122013201420152016201720182019202020212022TotalKraka112376717012910189146116113108104115145796,407Regnar930
See also Tyra Field Gorm Field Halfdan field Skjold oil field Siri, Nini and Cecilie oil fields Valdemar oil and gas field South Arne oil and gas field Harald gas field Ravn oil field
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