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Helix ESG’s T1200 Trencher Completes First North Sea Oil and Gas Project

Helix Energy Solutions Group’s new T1200 burial and trenching unit is quickly establishing a positive track record following the completion of an oil and gas project in the North Sea. The T1200 features a 1,200hp jet trenching spread, capable of burying product in water depths to 3,000m (10,000ft).

T1200 was deployed to bury a 14km long (8.7 mile), 10 inch export pipeline that included a 3 inch piggyback methanol line. The project specialization called for the line to be buried 2m (6.5ft) deep, with one meter of covering fill. The subsea trenching unit’s water jetting system trenched and simultaneously buried the pipeline under 1.4m (4.5ft) of sand in a continuous run that took just 48 hours.

The successful project is the T1200’s first oil and gas operation, and proves the versatility of the asset which has also been deployed to trench and bury high voltage undersea cables used to transport electricity from offshore wind farms to onshore power stations.

The T1200, operated by Helix ESG’s robotics subsidiary, Canyon Offshore, performed its first trenching job in early July 2012 at the Sheringham Shoal offshore wind farm trenching and burying an approximately 700m (2,300ft) long power cable between the wind turbines. Out of the 80 sections required in the field, the T1200 trenched and buried 37.

The T1200 was built in the UK by Forum Energy Technologies’ Perry Slingsby Systems ROV brand. The T1200’s design was based around the time proven T750 trencher( also owned and operated by Canyon Offshore) but has over 50 percent greater power and the capacity to trench larger diameter products (36 inches) to burial depths of 3m (10ft) depending on soil strength.

Subsea World News – Helix ESG’s T1200 Trencher Completes First North Sea Oil and Gas Project.

Forum Subsea Deploys Perry T-1200 Trencher in UK

Forum Subsea Technologies, a business line of Forum Energy Technologies, Inc. announces the completed deployment and successful operation of the new Perry T-1200 Trencher for Canyon Offshore, a subsidiary of Helix Energy Solutions Group.

The T-1200 is mobilized to bury power cables at Sheringham Shoals, an offshore wind farm in the United Kingdom that is owned equally by Statoil and Statkraft through joint-venture company Scira Offshore Energy Limited. The wind farm, which is currently under construction, has 88 wind turbine generators, located 17 to 23 km offshore from the coastal town of Sheringham, North Norfolk.

Perry trenching systems are recognized by many clients as a market leader in this technology due to their design, reliability and capability and have been successfully utilised in challenging trenching environments throughout the world. The T-1200 Trencher is an update of the successful T-750 trencher also owned and operated by Canyon Offshore since 2004.

Forum Subsea Technologies is a business line of Forum Energy Technologies, Inc. Their ROV product line ranges from electric observation class ROVs to large hydraulic work-class vehicles used for inspection, survey and deep-water construction, as well as other remote intervention technologies and services. Forum Subsea Technologies is positioned to support its customers through a global sales team and a worldwide network of distributors and service centres.

Forum Energy Technologies Inc.,headquartered in Houston, Texas, is a global provider of manufactured technologies and applied products to the energy industry. With approximately 3,300 employees located throughout the world, Forum is well positioned to provide the products and technologies essential to solving the increasingly complex challenges of the subsea, drilling and production sectors of the oil and gas industry.

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T1200 Trenching Unit Nearing Completion in the UK

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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