J. Ray McDermott Completes Installation of Conger Project in the Deepwater Gulf of Mexico

abarrelfullabarrelfull wrote on 04 May 2015 11:10

J. Ray McDermott, a subsidiary of McDermott International, Inc. (NYSE:MDR), has recently completed the installation of the Conger flowlines and subsea systems for the Conger partners, Amerada Hess (operator), Shell and Kerr-McGee.
The flowlines and subsea system tie back the Conger development of subsea wells in Garden Banks 215 (water depth 1,450 feet) to Shell's Salsa Platform in Garden Banks 172 (water depth 700 feet).

Production from the wells flows to the platform via insulated, piggable, dual eight-inch flowlines (each 4.5 miles in length) that are connected to a subsea manifold by insulated hard pipe flowline jumpers. An additional well will be tied in to the subsea manifold via a one mile, six-inch diameter, insulated flowline.

The project is technically noteworthy in that the design MAOP of the flowline system is 13,600 pounds per square inch (psi). This pipeline system is the first "15 K" subsea pipeline system in the world.

J. Ray McDermott was responsible for installing the three flowlines, four pipeline end manifolds, and the subsea distribution manifold. The flowlines were tied back to the Salsa platform via J-tubes at the Salsa platform. Work scope was completed with the successful hydrotest of the completed pipeline system.

J. Ray performed the work with the Derrick Barge 16 that was recently upgraded with a modular S-lay package and enhanced deepwater lowering capacity. This project highlighted the ability of the upgraded DB16 to economically address the varied installation tasks associated with deepwater subsea developments with a single mobilization of a construction vessel.

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