LLOG Awards McDermott Subsea Tiebacks Contract for Stonefly in Gulf of Mexico
LLOG Exploration Company awarded McDermott International a contract valued at $1 million to $50 million for deepwater subsea pipeline tiebacks and structures from the Stonefly development to the Ram Powell platform, located approximately 140 miles southeast of New Orleans.
The scope of work includes project management, installation engineering, subsea structure and spoolbase stalk fabrication, and subsea installation of the subsea infrastructure to support a two-well subsea tieback from the Stonefly development site to the Ram Powell platform via a 60,000-ft, 6-in.-diameter pipeline at water depths ranging from 3,300 to 4,100 ft. McDermott will also design, fabricate, and install a steel catenary riser, a pipeline end manifold, and two in-line sleds.
The Stonefly development includes the Viosca Knoll 999 area where the contractor is scheduled to use its 50-acre spoolbase in Gulfport, Mississippi, for fabrication and reeled solutions. The subsea tiebacks and structures are scheduled to be installed using McDermott’s North Ocean 105 vessel in Q3 2019. Structure design and installation engineering began in January 2019.
The Ram Powell tension-leg platform is located in 3,200 ft of water in Viosca Knoll Area, Block 956, and is capable of processing 60,000 BOPD and 200 MMcf/D of gas.
In its operational update issued on 14 January, LLOG said it expects to bring nine wells on line this year, which include four development wells at Who Dat, Mandy, and Red Zinger. In addition, five wells from three new fields, Stonefly, Buckskin, and Nearly Headless Nick, are forecast to be brought on line in 2019.
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