THE Corus Tubes energy business has won its third major project in the Gulf of Mexico for the Devil’s Tower deepwater export line. This contract consists of nearly 160km of thick-walled 18-in pipe, and was awarded by subsea contractor Coflexip Stena Offshore, the US members of the Technip-Coflexip group. “We are pleased to announce another project success in the Gulf of Mexico following completion of the Banjo Seahawk project earlier this year,” said Russell Codling, Corus Tubes’ offshore sales manager. “The pipe will be produced at our 42-in DSAW mill in Hartlepool, UK, where we have one of the world’s most-powerful UOE pipe mills, capable of rolling extremely-thick-walled pipe.”
Williams Field Services awarded Coflexip Stena Offshore the EPCI (engineering, procurement, construction, and installation) contract for two 18-in export lines for Devil’s Tower in August last year. Corus Tubes’ contract scope includes 157km of X60 18-in OD pipe in wall thicknesses of 0.875-1.125in. Installation is continuing, and the riser hook-up is planned for completion in January.
The Devil’s Tower field development is located in 1750m water depths in block 773 of the Gulf of Mexico, with shallower water tie-ins near the edge of the continental shelf. Coflexip Stena Offshore will install the export pipelines. The 192-km long 18-in diameter oil line – the Mountaineer oil pipeline – will extend from Mississippi Canyon 773 to main pass 34, while the 144-km long 18-in gas export line – the Canyon Cliff gas pipeline – will run from Mississippi Canyon 773 to main pass 261.
Dominion owns a 75% working interest in Devil’s Tower, with Pioneer Resources Co owning the other 25%. As part of this agreement, Dominion will produce oil and gas from the field through the Williams-owned infrastructure.