The Brigantine, Caravel, Corvette and Shamrock fields are natural gas reservoirs and gas production facilities in the southern North Sea, close to the UK/Netherlands median line. The fields have produced natural gas since 1999.
| Corvette gas field | |
|---|---|
| Country | United Kingdom |
| Region | Southern North Sea |
| Location/blocks | 49/24 |
| Offshore/onshore | Offshore |
| Coordinates | 53.231944N 2.622778E |
| Operator | Shell |
| Owner | Shell Esso |
| Field history | |
| Discovery | 1996 |
| Start of production | 1999 |
| Production | |
| Recoverable gas | 211×109 cu ft (6.0×109 m3) |
| Producing formations | Rotliegendes |
The fields
editThe Brigantine, Caravel, Corvette and Shamrock gas fields are located in the adjacent UK Offshore Blocks 49/19, 49/20 and 49/24. Brigantine, Caravel and Corvette follow Shell’s convention of naming southern North Sea fields after types of sailing vessels. Brigantine has four gas accumulations designated A-D. The gas reservoirs have the following characteristics.[1] [2] [3] [4]
| Reservoir | Brigantine A | Brigantine B | Brigantine C | Brigantine D | Shamrock | Caravel | Corvette |
|---|---|---|---|---|---|---|---|
| Block | 49/19 | 49/19 | 49/19 | 49/19 | 49/20a | 49/20 | 49/24 |
| Year discovered | 1986 | 1997 | 1998 | 2001 | 1971 | 2002 | 1996 |
| Gas reservoir | Rotliegend | Rotliegend | |||||
| Gas reserves | 280 billion cubic feet or 10 billion cubic metres | 211 bscf | |||||
Development
editThe gas producing capability of the fields was realised through five offshore platforms, their characteristics are summarised in the table.[5] [1] [6] [7]##2 1 3 7
| Installation | Brigantine BR | Brigantine BG | Shamrock QS | Caravel QR | Corvette CV |
|---|---|---|---|---|---|
| Block | 49/19 | 49/19 | 49/20a | 49/20a | 49/24 |
| Coordinates | 53.442744 2.698202 | 53.402498 2.656400 | 53.495192 2.974531 | 53.542131 3.025706 | 53.231944 2.622778 |
| Water depth, m | 29 | 29 | 29 | 30 | 29 |
| Owner | Shell | Shell | Shell | Shell | Shell |
| Type | Fixed steel | Fixed steel | Monotower | Monotower | Fixed steel |
| Substructure weight, tonnes | 360 | 394 | 180 | 270 | 910 |
| Topsides weight, tonnes | 152 | 162 | 270 | 180 | 970 |
| Production start | 2001 | 2001 | 2008 | 2008 | 1999 |
| Production export (by pipeline) to | Brigantine BG | Corvette CV | Caravel QR | Corvette CV | Leman A complex |
| Export pipeline, length and diameter | 5.4 km, 20” | 19.6 km, 20” | 4.95 km, 16” | 33.3 km, 16” | 36.6 km, 20” |
Production
editGas production from the fields is summarised in the table.[1] Gas from these installations flows to the Leman A complex and from there to the Bacton gas terminal.
| Reservoir | Brigantine A | Brigantine B | Brigantine C | Brigantine D | Shamrock | Caravel | Corvette |
|---|---|---|---|---|---|---|---|
| Production start | 2001 | 2001 | 2002 | 2003 | 2008 | 2008 | 1999 |
| Peak production, mcm/y | 639 | 573 | 655 | 35 | 411 | 873 | 1,782 |
| Peak year | 2003 | 2001 | 2003 | 2006 | 2010 | 2011 | 1999 |
| Cumulative production, mcm/y | 2,673 | 1,561 | 2,247 | 90 | 1,137 | 2,568 | 4,780 |
| End of production | 2008 | 2008 | 2008 | 2008 | 2009 |
The production profile, in mcm/y, of the Corvette field was as shown.[1]
Graphs are unavailable due to technical issues. There is more info on Phabricator and on MediaWiki.org. |
See also
editReferences
edit- ^ a b c d "Oil and Gas UK – Field data". www.gov.uk. Archived from the original on 2015-10-27. Retrieved 8 December 2021.
- ^ "The Corvette field". mem.lyellcollection.org. Archived from the original on 2021-12-08. Retrieved 8 December 2021.
- ^ "Brigantine field development gets green light". www.ogj.com. 19 July 2000. Archived from the original on 2021-12-08. Retrieved 8 December 2021.
- ^ "England's Historic Seascapes: Withernsea to Skegness". archaeologydataservice.ac.uk. Archived from the original on 2021-12-08. Retrieved 8 December 2021.
- ^ "Inventory of Offshore Installations". odims.ospar.org. Archived from the original on 2021-11-25. Retrieved 8 December 2021.
- ^ "OGA interactive Maps". ogauthority.maps.arcgis.com. Archived from the original on 2019-01-26. Retrieved 8 December 2021.
- ^ "Stanardised monotowers". hsmoffshoreenergy.com. Archived from the original on 2021-12-08. Retrieved 8 December 2021.