The Brent System pipeline transports oil from the North Sea oilfields via Cormorant Alpha to the Sullom Voe Terminal in Shetland, Scotland. Since 3 August 2009, it is operated by Abu Dhabi National Energy Company replacing the previous operator Royal Dutch Shell. The Brent system is jointly owned by 21 companies. 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 diameter steel (API 5L X60) of in length. It has capacity of . The Brent C to Cormorant A pipeline is 30 inches (760 mm) in diameter and 35 kilometres (22 mi) long. Other oil pipelines are: The specification for crude oil transported in the Brent system is as follows: Production Oil production from the Brent field from 1976 to 1983 was as follows (1000 barrels): Decommissioning Shell UK Limited propose to decommission the Brent Field pipelines in the mid-2020s. References North Sea energy Oil pipelines in the United Kingdom Oil and gas industry in Scotland Shell plc buildings and structures Pipelines under the North Sea