The project involved the installation of jumpers, flying leads, subsea pump stations, umbilicals,and subsea landing of some of the industry’s largest and complex umbilical end terminations to a host floating production platform in 7,200 ft (2,195 m) of water 279 mi (449 km) offshore Louisiana. The project is part of the first stage of development of the Jack South, St. Malo South, and St. Malo North drill centers.
McDermott executed in-house fabrication of 21 high-specification rigid flowline, manifold and pump jumpers, and installed the structures using the Derrick Barge 50 (DB50) with its specialized deepwater lowering system. In addition, DB50 installed more than 80 flying leads, five additional rigid production well jumpers, and other subsea control and production boost components. DB50 was assisted by a fleet of up to 12 support vessels delivering material from various Gulf Coast fabrication and staging facilities to the offshore installation site.
Additionally, three control and two power umbilicals totaling 65 mi (105 km) were transported and installed by the subsea construction vessel North Ocean 102 (NO102), along with other related subsea structures.