HOUSTON – Offshore Installation Services has received a decommissioning contract from Centrica Energy for the abandonment of multiple wells in the North Sea. The initial campaign includes six subsea wells in the central North Sea, in categories 2.1 and 2.2, which will be abandoned by a diverless, vessel-based approach.
Planning and engineering are under way, and the scope of the contract will begin this summer.
The campaign will be conducted from an anchor-handling tug supply vessel, theIsland Valiant. During phase one, the Suspended Well Abandonment Tool (SWAT) system from sister Acteon company Claxton Engineering Services will be deployed through the vessel’s moonpool to set cement plugs in the bore and across all the casing annuli.
The second phase will use an abrasive severance system for the cutting of the wells and sequential removal from the seabed. This will conclude the offshore operations.