| Brent System | |
| Type: | oil |
| Country: | Scotland, United Kingdom |
| Operator: | TAQA Bratani |
| Length Km: | 147 |
| Discharge: | 100000oilbbl/d |
| Diameter In: | 36 |
| Direction: | north-south-west |
| Start: | North Sea oilfields |
| Finish: | Sullom Voe Terminal |
| Through: | Cormorant Alpha |
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.[2] The Brent system is jointly owned by 21 companies.
Oil is transported from 20 oilfields, including:
The Cormorant A to Sullom Voe pipeline is 36inches diameter steel (API 5L X60) of 147km (91miles) in length. It has capacity of .[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]
| 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]
| 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 |
Oil production from the Brent field from 1976 to 1983 was as follows (1000 barrels):[5]
Shell UK Limited propose to decommission the Brent Field pipelines in the mid-2020s.