Английская Википедия:Dan oil field
Шаблон:Short description Шаблон:Infobox oil field
The Dan oil field is a large oil and associated gas field in the Danish sector of the North Sea, about Шаблон:Convert 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.[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]
| 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]
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Kraka and Regnar fields
The Kraka and Regnar fields are satellites to the Dan installation. The characteristics of the fields are as follows.
| Field | Kraka | Regnar |
| Prospect | Anne | Nils |
| Reservoir | Chalk | Chalk |
| Geological age | Danian and Upper Cretaceous | Upper Cretaceous |
| Coordinates | 55.402045°N 5.078377°E | 55.385323°N 4.288464°E |
| Block | 5505/17 | 5505/17 |
| Reservoir depth | 1,800 m | 1,700 m |
| Field delineation | 81 km2 | 34 km2 |
| Reserves | ||
| Discovered | 1966 | 1979 |
The fields are developed through two offshore installations as shown.
| Field | Kraka | Regnar |
| Production start | 1991 | 1993 |
| Water depth | 45 m | 45 m |
| Installation | Fixed steel no helideck | Subsea steel |
| Function | Wellheads no processing | Wellhead no processing |
| Substructure weight tonnes | 550 | 50 |
| Topsides weight tonnes | 400 | - |
| Number of wells | 8 | 1 |
| Status | Producing (2022) | No production since 2006 |
| Export, well fluids | 9 km 8-inch pipeline to Dan FA | 13 km 8-inch pipeline to Dan FA |
| Import, lift gas | 9 km 3-inch pipeline from Dan FA | - |
The oil production profile of the Kraka and Regnar fields (in 1000 cubic metres) is as shown.
| Year | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 |
| Kraka | 144 | 205 | 390 | 491 | 469 | 340 | 315 | 314 | 404 | 350 | 253 | 157 | 139 | 199 | 211 | 222 | 176 |
| Regnar | 145 | 429 | 86 | 41 | 27 | 43 | 29 | 14 | 33 | 18 | 19 | 19 | 16 | 11 | 0 |
| Year | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | Total |
| Kraka | 112 | 37 | 67 | 170 | 129 | 101 | 89 | 146 | 116 | 113 | 108 | 104 | 115 | 145 | 79 | 6,407 |
| Regnar | 930 |
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
References
Шаблон:Portal Шаблон:Coord missing
