Flyndre, which straddles the UK and Norwegian North Sea median line, was discovered in 1974.
It has been developed as a tieback to theRepsol Sinopec Resources-operated Clyde platform, 25 km (15.5 mi) to the southwest, via a single production well.
Production heads via the Fulmar platform and onward to Teesside on the northeast English coast via the Norpipe system.
Georg Vidnes, Clyde Asset Manager, said: “We anticipate that the additional production from Flyndre will extend the life of Clyde well into the next decade.”
Output should peak at around 10,000 b/d, with the field expected to produce until at least 2023.
Maersk added that first oil from the Shaw field, part of the Repsol Sinopec Resources-operatedMontrose Area Redevelopment in the same sector, should follow later this spring.