The Norwegian oil and gas company owns an 80% stake in the project in the UK North Sea.
Equinor, which is the operator of Rosebank, is considering selling a quarter of its stake or a 20% stake in the project, sources said.
The divesture could fetch around $1.5bn (Nkr16.8bn) for Equinor, they added.
Equinor refused to comment on the news, reported the media outlet.
The news comes after the North Sea Transition Authority (NTSA) approved the development and production of Rosebank this September.
How well do you really know your competitors?
Access the most comprehensive Company Profiles on the market, powered by GlobalData. Save hours of research. Gain competitive edge.
Your download email will arrive shortly
Not ready to buy yet? Download a free sample
We are confident about the unique quality of our Company Profiles. However, we want you to make the most beneficial decision for your business, so we offer a free sample that you can download by submitting the below formBy GlobalData
Located around 128km west of Shetland, Rosebank is said to be the UK’s largest untapped oilfield.
UK-based Ithaca Energy owns the remaining 20% stake in Rosebank.
It is anticipated that the field will start production in 2026–27, producing 300 million barrels of oil over its lifetime.
The field’s development is projected to cost $3.8bn.
Equinor has cut costs by streamlining the field’s development and redeploying a floating production, storage and offloading vessel.
In April this year, the International Energy Agency declared that to keep global warming to 1.5°C, no new oil and gas resources should be developed.
More than 200 million metric tonnes of carbon dioxide could be released when Rosebank oil is burnt, making the proposed project controversial, reported CNBC.
Earlier this week, Equinor found oil close to the Gina Krog oil and gas field in the Norwegian North Sea.
The discovery is estimated to contain recoverable amounts of 5–16 million barrels of oil equivalent.