The Brent Field is located in UKCS Block 211/29 in the northern North Sea c 73.5nm NE of the Shetland Islands. It is one of the earliest North Sea fields; discovered in 1971 and tested in 1972 in the Middle Jurassic Brent Group
sandstone hydrocarbon reservoirs. It opened around 1976; indeed the North Sea Hydrocarbon economy is tracked on World Markets by the price of Brent Crude
. There are at least 4 platforms working the field, although by 2019 plans for decommissioning were advanced.Brent Alpha
was installed in 1976 and is a fixed steel jacket, secured to the seabed by piles at the base of each of its eight legs, in 142 m of the northern North Sea. It ceased production in Nov 2014.