Statoil has published video footage of the first jacket for the Johan Sverdrup field sailing away from a yard in Norway.
The riser platform jacket weighs in a 26,000 tonnes, making it the largest of its kind on the Norwegian Continental Shelf.
It was completed at Kvaernerās yard at Verdal last month.
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.