Cygnus

The Cygnus field is the single largest producing gas field in the UK making the fields production a key contributor to UK energy security. The field is located in the Southern North Sea in blocks 44/11a and 44/12a in water depths in the range of 15 to 25 meters.

The Cygnus infrastructure consists of three bridge-linked Alpha platforms, including a wellhead drilling centre (AWHP), a processing/utilities unit (APU) and the living quarters/central control room (AQU).

The Cygnus Bravo, an unmanned satellite platform, is approximately seven kilometres northwest of Cygnus Alpha.

Cygnus connects via the Esmond Transmission System (ETS) pipeline to the Perenco operated terminal at Bacton. Cygnus gas is blended with a high Wobbe Index gas in Bacton to achieve National Grid entry specification.

First gas from Cygnus was achieved in 2016 from Cygnus Alpha and 2017 from Cygnus Bravo. Two new development wells were brought onstream in 2023, supporting near term production. Gas compression commenced in 2022.

Partners

• Eni UK, a subsidiary of Ithaca Energy plc (38.75%), Spirit Energy (61.25%)