Riser Cutting and FPSO Disconnection
North Sea
90m
Decommissioning
Subsea 7 delivered an ROV deployable cutting solution to disconnect 5 risers and moorings from an FPSO.
Barracuda connectors fitted to the risers meant each transition piece was different geometry. All locations were to be cut as close to the hull underside as possible and the diamond wire saw (DWS) would need to be flown by ROV to all 5 locations.
The project yielded a number of successes including:
Subsea 7 developed a bespoke engineered solution utilising our existing DWS fleet to fulfil the following requirements:
FPSO riser and mooring disconnections were required as follows: