McDermott Completes Deepest Pipelines In U.S. Waters

McDermott Marine Construction has completed the deepest pipelines laid in U.S. waters. The two pipelines reached depths of approximately 1,400 feet and were installed for Conoco Inc.'s Jolliet project.

The 6.5-mile 10-inch lines were installed by McDermott's Derrick Barge 28 from the Conoco's Central Production Platform (CPP) in 620 feet of water in Green Canyon Block 52 to a tie-in point in Green Canyon Block 139 in 1,070 feet of water.

McDermott also installed a unified connector skid (UCS) for the Jolliet project in Green Canyon 184 in 1,020 feet of water. The UCS installation utilized saturation diving and McDermott's new Total Saturation System-7. These are the deepest working dives in the Gulf of Mexico. TSS-7 has a maximum dive rating of 1,500 feet and is based in the Gulf of Mexico. The UCS provides the future connection points for the flexible pipe tie-ins of the TLWP.

McDermott Marine Construction is a major operating unit of McDermott International, Inc., a leading worldwide energy services company.

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Maritime Reporter Magazine, page 22, Oct 1989

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