Английская Википедия:Brigantine, Caravel, Corvette and Shamrock gas fields
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.
The fields
The 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
The 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
Gas 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] <graph>{ "version": 2, "width": 600, "height": 300, "data": [ { "name": "table", "values": [ { "x": 1999, "y": 1782 }, { "x": 2000, "y": 1048 }, { "x": 2001, "y": 517 }, { "x": 2002, "y": 154 }, { "x": 2003, "y": 129 }, { "x": 2004, "y": 471 }, { "x": 2005, "y": 403 }, { "x": 2006, "y": 174 }, { "x": 2007, "y": 39 }, { "x": 2008, "y": 63 }, { "x": 2009, "y": 0 }, { "x": 2010, "y": 0 }, { "x": 2011, "y": 0 }, { "x": 2012, "y": 0 }, { "x": 2013, "y": 0 }, { "x": 2014, "y": 0 } ] } ], "scales": [ { "name": "x", "type": "ordinal", "range": "width", "zero": false, "domain": { "data": "table", "field": "x" } }, { "name": "y", "type": "linear", "range": "height", "nice": true, "domain": { "data": "table", "field": "y" } } ], "axes": [ { "type": "x", "scale": "x" }, { "type": "y", "scale": "y" } ], "marks": [ { "type": "rect", "from": { "data": "table" }, "properties": { "enter": { "x": { "scale": "x", "field": "x" }, "y": { "scale": "y", "field": "y" }, "y2": { "scale": "y", "value": 0 }, "fill": { "value": "steelblue" }, "width": { "scale": "x", "band": "true", "offset": -1 } } } } ] }</graph>
See also
References