North Sea oil firm EnQuest is trying to sell a 20% stake in its £2billion Kraken field, a news report said.
EnQuest has brought in investment bank Jefferies to advise on the sale, Reuters reported, citing “documents”.
The company declined to comment.
EnQuest owns 70.5% of Kraken, while Cairn Energy has 29.5%.
The field, about 80 miles east of Shetland, came on stream in June 2017.
EnQuest tried to sell a stake in Kraken in 2016, but its talks with Israel’s Delek Group regarding a 20% farm-out collapsed.
In August, EnQuest said operational issues with the Kraken floating production vessel had forced it to lower its short-term production forecasts.
At the time, the firm said it expected to reach plateau production of about 50,000 barrels of oil per day in the first half of 2018.
EnQuest had net debts of $1.9billion (£1.4billlion) at the end of June 2017.