McDermott completes contract scope for Jack and St. Malo Project
McDermott International, Inc. has announced the successful completion of the Jack and St. Malo project for Chevron U.S.A. Inc. 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 7200 ft of water 279 miles offshore Louisiana. The project is part of the first stage of development of the Jack South, St. Malo South and St. Malo North Drill Centres.
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 specialised deepwater lowering system. In addition, more than 80 flying leads, five additional rigid production well jumpers and other subsea control and production boost components were installed by the DB50 – including three pump stations each weighing 209 tons to a depth of 6988 ft. The 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 totalling 65 miles were transported and installed by the subsea construction vessel North Ocean 102 (NO102) along with other related subsea structures.
“Our ability to fabricate the jumpers in house and utilise the combined strengths of the DB50’s deepwater lowering system and the high payload and top tension capacity of the NO102’s 330 t vertical lay system allowed McDermott to deliver an integrated subsea solution for our client on this complex deepwater project,” said Tony Duncan, Executive Vice President Subsea. “As the industry moves into deeper water, McDermott continues to tailor its subsea engineering expertise, fabrication facilities, and global fleet of specialised vessels to meet the evolving technical needs of our clients.”
Located in the Gulf of Mexico Walker Ridge Area, the Jack and St. Malo fields are jointly being developed with a host floating production unit.
Adapted from press release by Hannah Priestley-Eaton
Read the article online at: https://www.oilfieldtechnology.com/exploration/15092014/mcdermott-completes-contract-scope-for-jack-and-st-malo-project/
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