A drilling riser joint with carbon fibre in the main structural body and titanium end flanges was put into service at the Heidrun TLP in 2001. The joint has an internal titanium liner. The joint was the first implementation of an offshore composite riser and was the end result of the Compriser project.
The composite riser joint has an internal diameter of 560 mm (22”) and is 15 m (48 ft) long. The joint is a part of the marine riser. The joint has been in service for ten years and has been treated as its metallic counterparts.
At the periodic inspection done in 2010, it was decided that the external layer needed refurbishment.
Inspection and pressure testing showed that the properties of the joint had not changed during service.