Norway's Equinor ASA (NYSE: EQNR) is interested in buying Chevron Corp.'s (NYSE: CVX) stake in Rosebank, an oil and gas field in the British part of the North Sea, two sources close to the process told Reuters.

UPDATE: Equinor Acquires 40% Stake In Rosebank Project In North Sea

Chevron on Sept. 26 said that it had received interest from a potential buyer for its 40% stake in one of Britain's biggest oil and gas developments.

Equinor declined comment.

The sale of its 40% stake in the Rosebank project would mark Chevron's complete exit from the aging basin after it launched the sale of its other fields in the region earlier this year.

However, it was unclear if the San Ramon, Calif.-based company was interested in selling out of the project, which is yet to be approved for development.

"Chevron can confirm it has received an expression of interest for its share in the Rosebank project," the spokeswoman said, without elaborating.

The Rosebank project, located some 130 km (80 miles) northwest of the Shetlands in seas over a kilometer deep, would be one of the biggest new fields in the U.K. North Sea.

With reserves estimated at around 300 million barrels of oil, it could help boost the basin's production.

Other stakeholders in the Rosebank project include Suncor Energy Inc. (NYSE: SU), and privately-backed Ineos and Siccar Point Energy Ltd., which is seeking buyers for at least half of its stake in the project.