It extends across 3 blocks: 23/11a, 23/16b and 23/16c well, which was drilled by Shell.The field was historically defined as 2 fields: Barbara and Phyllis.
Arran is expected to produce around 100 million standard cubic feet per day of gas and 4 000 barrels per day of condensate, which combined equates to 21 000 barrels of oil equivalent per day.
The life of the development is estimated to be around 12 years.
Shell holds a 44.57% share in the project while 30.43% belongs to Rockrose Energy and the remaining 25% is owned by Dyas UK.
The natural gas and liquids they produce will be transported via a new-build 51 km pipeline to the Shearwater platform.
The Shearwater platform provides support for several surrounding fields, it was brought online in 2000 and it remains among the biggest producing fields in the North Sea.
In 2019, Subsea 7 announced the award of the Arran Gas Field Development contract by Shell, worth between $100-200 million.
On October 20, 2021, Shell announced that it had started production from the Arran field.