ConocoPhillips has submitted plans for a £1billion project which straddles the Norway-UK median line in the North Sea.
The Tommeliten A project is a subsea tieback to the Ekofisk platform around 15miles away.
Plans have been dually submitted to the Norwegian Ministry of Petroleum and Energy and the UK Oil and Gas Authority, in line with regulatory rules for trans-boundary oil and gas projects.
ConocoPhillips said the North Sea project has resource potential in the range of 80-180million barrels of oil equivalent, mainly made up of gas condensate.
The US-headquartered operator said several contracts will be awarded during the project period, estimated to enable around 5,000 jobs.
First production from Tommeliten A is expected in 2024, with total capital investment of NOK 13 billion ($1.5bn).
Steiner Vage, ConocoPhillips president for Europe, Middle East and North Africa, said: “We are pleased to achieve this milestone for the Tommeliten A project.
“The field development will unlock production of new resources in the area and further strengthen the Ekofisk legacy and future.”
ConocoPhillips Skandinavia is the operator with a 28.1% stake, partnered with PGNiG Upstream Norway AS (42.1978 %), TotalEnergies EP Norge AS (20.1430 %),Vår Energi AS (9.0907 %), ConocoPhillips (U.K.) Holdings Ltd (0.2109%), TotalEnergies UK Ltd (0.1510%) and ENI UK Ltd (0.0681%).
Tommeliten A was discovered in 1977 and extends from Norwegian Block 1/9 into UK Block 30/20, and is being primarily developed as a Norwegian project.
ConocoPhillips pulled out of the UK in 2019 after completing the sale of a package of assets to Chrysaor (now Harbour Energy) in a £2billion deal.