Statoil has published video footage of the first jacket being put in place at the Johan Sverdrup field.
The riser platform weighs in at 26,000 tonnes, making it the largest of its kind on the Norwegian Continental Shelf.
It was completed at Kvaerner’s yard at Verdal.
It is the first major structure to be completed for the Johan Sverdrup project.
Statoil is the operator of Johan Sverdrup with a 40% stake. The other partners are Aker BP, Petoro, Maersk Oil and Lundin.
First oil is expected from the North Sea field, located 160kilometres west of Stavanger, in 2019.