Pipeline end-sled design for gulf lateral sets several benchmarks

Installation in 1999 of Discovery Producer Services LLC's Green Canyon Block 209 lateral in the Gulf of Mexico represented several important achievements.Among them were:The deepest gulf use of double-submerged-arc welded line pipe.To date, the largest and highest pressure rated diverless connectors (16-in. and 12-in. ANSI 1500 class).Establishment of a dual-diameter expandable and piggable deepwater natural gas transmission system.The successful use of large diameter, high-pressure diverless connectors will assist establishing future pipeline transmission infrastructure beyond the continental shelf.The primary focus of this article is on design, fabrication, testing, and installation...

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