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Total to deploy novel pipe-in-pipe system

Total E&P UK is going to use reelable, electrically trace heated pipe-in-pipe (ETH-PIP) technology by Technip

Total to deploy novel pipe-in-pipe system Total to deploy novel pipe-in-pipe system

Total E&P UK has awarded Technip a $94-million contract to deliver a full engineering, procurement, construction, and installation tieback project for the Islay gas field in the UK northern North Sea. 

The contract will involve the first subsea execution of Technip’s reelable, electrically trace heated pipe-in-pipe (ETH-PIP) technology. This is designed to enhance the operability of subsea pipelines prone to blockage due to the formation of hydrates or wax. 

The full project work scope involves installation of a 6-km (3.7-mi) ETH-PIP, a control umbilical, subsea structures and seabed preparation, including detailed design, engineering, and project management. 


Islay is 440 km (273 mi) northeast of Aberdeen, in 120 m (393 ft) water depth. The field will tieback to the Forvie North manifold, which is connected to the Alwyn North production complex. Technip’s operating center in Aberdeen will execute the work, supported by the Evanton spoolbase in northern Scotland and Technip subsidiary companies Genesis Oil and Gas Consultants and Duco. 

Offshore installation will be performed in mid-2011 using a spread of vessels, including Technip’s new pipelay vessel, Apache II, and the DSVs Skandi Arctic and Skandi Achiever.

Technip says successful application of this technology reduces capital and operating costs for fields with demanding flow assurance conditions. The technology can be applied in shallow and deepwater environments. 

Source : Offshore Magazine