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T1200 Trenching Unit Nearing Completion in the UK

Originally posted on Helix Currents:

Left: Seen here is the outer shell of the T1200 ROV Trenching and Burial Unit which is set for delivery to Canyon Offshore, Helix ESG’s subsea robotics unit, by summer 2012. Right: A computer animation of a completed T1200.

Helix ESG’s latest seabed trenching unit, the T1200, is in the final stages of construction at a Perry Slingsby Systems Remotely Operated Vehicle (ROV) plant in the UK.

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McDermott signs agreement for spool base services in Gulf of Mexico

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HOUSTON – McDermott International, Inc. says it has signed a 10-year frame agreement with Helix Subsea Construction, Inc. for spool base services in the Gulf of Mexico.

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“This agreement allows McDermott, when contracting with Helix, to offer full-service, shore-based pipeline stalking and spooling services from Helix’s premier 120-acre Gulf of Mexico spool base at Ingleside, Texas, to pursue deepwater and ultra-deepwater installation projects,” explained Stephen M. Johnson, chairman of the board, president and CEO, McDermott.

“By combining Helix’s established spool base services with McDermott’s state-of-the-art welding technology to support our newest subsea construction vessels and expanding subsea engineering resources, we can further offer full-service engineering, procurement, construction and installation for deepwater and ultra-deepwater subsea projects for Gulf of Mexico and Atlantic customers.”

Through the cooperation agreement, McDermott would fabricate the required mile-long stalks at Ingleside, and employ its own in-house automatic welding equipment, technology and technicians. The company says that these facilities and personnel will enable it to meet the stringent welding criteria required for deepwater subsea pipelines. The spool base is also designed for fabrication of pipeline end terminations, pipeline end manifolds, subsea manifolds and jumpers.

McDermott’s subsea construction vessels North Ocean 102 (“NO102”) and new-build lay vessel North Ocean 105 (“LV105”), due to be completed later this summer, both have reel-lay capabilities. LV105 is designed to lay both flexible and rigid pipe up to 16-in. diameter, with tension and hang-off clamp capacities of 440 tons and 550 tons, respectively. NO102 offers flexible and umbilical installation and is equipped with a 330-ton low squeeze pressure single tensioner and high capacity carousel.

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McDermott says it will employ strict welding procedures, advanced welding technology and technical experts to meet or exceed client welding criteria for deepwater subsea pipelines, from the Ingleside-based spool facility. Photo courtesy of Helix Subsea Construction, Inc.

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