Kerr-McGee awards risers, flowline for Gunnison spar development

By OGJ editors

HOUSTON, Nov. 15 -- Kerr-McGee Oil & Gas Corp., a wholly owned subsidiary of Oklahoma City-based Kerr-McGee Corp., has awarded a contract for the supply of a flexible flowline, jumper, and risers for Gunnison field's spar development project in the Gulf of Mexico to Wellstream, a unit of Halliburton Energy Services Group.

Gunnison field, in almost 3,150 ft of water, was discovered in May 2000 on Garden Banks Block 668 about 155 miles southeast of Galveston, Tex. (OGJ Online, June 05, 2000). The field will be developed using the Kerr-McGee Global Producer VII truss spar, which is being designed to produce 40,000 b/d of oil and 200 MMcfd of natural gas.

CSO Aker Maritime, a subsidiary of Technip-Coflexip Group, Paris, is handling the engineering, procurement, fabrication, and delivery of the hull, moorings and riser system. Delivery of the spar hull is scheduled for third quarter 2003 (OGJ Online, Nov. 15, 2001), and first oil from the development is anticipated in first quarter 2004.

Wellstream will manufacture the flowline, risers, and jumper at its Panama City, Fla. facility, where burst and dynamic testing will be performed. Items to be delivered in June include a 5.375-in. ID, 8,000 psi flowline; a 5.375-in. ID, 8,000 psi jumper; and three 5.375-in. ID, 8,000 psi risers.

"The project offers technical challenges for Wellstream due to high pressure and deepwater specifications." said Brian Cocksedge, Wellstream's managing director. "High strength armor material will be utilized on the designs, which allows for a lighter weight product to meet the onerous operating conditions," he said.

In addition to operator Kerr-McGee, which has a 50% working interest in Gunnison field, concession partners include Nexen Petroleum Offshore USA Inc., a wholly owned unit of Nexen Inc., Calgary, 30% and Energy Resource Technology Inc., a subsidiary of Cal Dive International Inc., Houston, 20%.

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