The firm has interests in six oil fields located in the Northern North Sea,[3] two of which (the West Don and Don Southwest fields) previously formed the Petrofac Energy Developments business unit and have a combined production of 40,000 barrels per day (6,400 m3/d).[4] The other four (Broom, Heather, Thistle and Deveron) were part-owned by Lundin Petroleum prior to the creation of EnQuest and are capable of producing 24,000 barrels per day (3,800 m3/d).[4] EnQuest is the operator of each field; its financial interests are as follows:[5] In November, 2013, EnQuest were granted permission to develop the Kraken field which has an estimated 140 million barrels of oil.[6]
Companies with headquarters and/or registered office in the UK but no applicable energy operations within the country shown in italics1Ultimate parent company is not UK-based 2Integrated in the United States, no generation or supply activities in the UK
