Statoil vice president for the Norwegian continental shelf Arne Sigve Nylund described the North Sea start-up as "an early Christmas gift", given that production from the field was not scheduled to get under way before Christmas Eve.

"I am pretty proud that our team and the suppliers have achieved this," Nylund said at a press conference during ONS in Stavanger.

"The first time I got familiar with the project, in 2012, cost estimates were Nkr8.8