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French firm to build offshore drilling rig for Anadarko

28th November 2012

Technip will design, construct and transport a 23,000-tonnes truss spar hull for ultra-deepwater development in the US Gulf of Mexico

French firm to build offshore drilling rig for Anadarko
The spar will have a capacity of more than 80,000 barrels of oil and 2.3 million cubic meters of natural gas per day

French subsea, offshore and onshore specialist Technip will construct a truss spar hull for Texas-based oil and gas major Anadarko Petroleum Corporation, the company announced on Tuesday, for use in ultra-deepwater field development in the US Gulf of Mexico.

Technip will begin the engineering, construction and transport of a 23,000-tonnes truss spar hull for Anadarko’s Heidelberg field development. According to the subsea, offshore and onshore specialist, the spar will have a capacity of more than 80,000 barrels of oil and 2.3 million cubic meters of natural gas per day. Project sanctioning is expected in mid-2013.

Spars are cylindrical, partially submerged floating oil platforms typically used in deep waters. They can be designed in one of three conventional ways. In the truss spar, the midsection is made up of truss elements connecting the upper buoyant hull (hard tank) with the bottom soft tank containing permanent ballast. The Heidelberg spar will be designed and built at Technip’s main construction yard, in Pori, Finland.

Discovered in 2009, the Heidelberg field is located at a water depth of 1,620 m in the US Gulf of Mexico, in the  Green Canyon Block 860, approximately 322 km southwest of New Orleans. It is owned by Anadarko (44.25 per cent), Eni and Apache (12.5 per cent stake each), Statoil (12 per cent), and Cobalt and ExxonMobil (each own 9.375 per cent).

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