Moorings Replacement and Hook-up for a'Damaged North Sea FPSO

摘要

In a North Sea storm during February 2011, the Gryphon Alpha floating production, storage, and offloading (FPSO) unit broke four of its 10 mooring lines and moved partially off station, resulting in damage to subsea assets. Following the incident, the FPSO was taken to dry dock for replacement of the damaged subsea infrastructure and moorings. This paper describes the measures put in place so that the mooring system could be replaced and the FPSO reconnected on an efficient schedule.