Brent System
Template:Use dmy dates Template:Use British English Template:Infobox pipeline The Brent System pipeline transports oil from the North Sea oilfields via Cormorant Alpha to the Sullom Voe Terminal in Shetland, Scotland.[1] Since 3 August 2009, it is operated by Abu Dhabi National Energy Company replacing the previous operator Royal Dutch Shell.[1][2] The Brent system is jointly owned by 21 companies.[1]
Oil transportation system
Oil is transported from 20 oilfields, including:
- Thistle
- Murchison
- Hutton
- North West Hutton
- Dunlin
- Brent A, B, C & D
- Cormorant Alpha
- North Cormorant
- Tern
- Eider
Pipelines
The Cormorant A to Sullom Voe pipeline is Template:Convert diameter steel (API 5L X60) of Template:Convert in length. It has capacity of Template:Convert.[1] The Brent C to Cormorant A pipeline is 30 inches (760 mm) in diameter and 35 kilometres (22 mi) long.
Other oil pipelines are:[3]
| Pipeline number | From | To | Diameter (inches) | Length (km) |
|---|---|---|---|---|
| PL001 | Brent C | Cormorant A | 30 | 35.9 |
| PL049 | Brent A | Brent Spar | 16 | 2.8 |
| PL048 | Brent B | Brent Spar | 16 | 2.3 |
| PL045 | Brent B | Brent C | 24 | 4.6 |
| PL046 | Brent D | Brent C | 20 | 4.0 |
| PL1955 | Brent A | Brent B | 14 (flexible) |
The specification for crude oil transported in the Brent system is as follows:[4]
| Parameter | Value |
|---|---|
| Entry point | Cormorant A |
| Exit point | Sullom Voe terminal |
| Crude oil | Non-sour |
| Base sediment and water | 5% |
| True vapour pressure at entry | 115 psia @ 100 °F |
| True vapour pressure at exit | 220 psia @ 100 °F |
| Hydrogen sulfide | 25 mg/l |
| Carbon dioxide | 251 mg/l |
Production
Oil production from the Brent field from 1976 to 1983 was as follows (1000 barrels):[5]<graph>{ "version": 2, "width": 400, "height": 200, "data": [ { "name": "table", "values": [ { "x": 1976, "y": 766 }, { "x": 1977, "y": 9484 }, { "x": 1978, "y": 28962 }, { "x": 1979, "y": 65323 }, { "x": 1980, "y": 51154 }, { "x": 1981, "y": 84165 }, { "x": 1982, "y": 118073 }, { "x": 1983, "y": 146079 } ] } ], "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>
Decommissioning
Shell UK Limited propose to decommission the Brent Field pipelines in the mid-2020s.[3]