umbilical

French oil services provider, Technip, has secured an engineering, procurement, installation and construction (EPIC) contract in the range of €100m to €250m from Chevron North Sea, to develop the Alder field as a subsea tieback to the Britannia Bridge Link Platform (BLP).

Located in the central North Sea, about 200km north-east of Aberdeen, Scotland, the Alder field is at a water depth of approximately 150m.

The scope of the contract includes detailed design and pipelay of a 28km, 16in pipe-in-pipe system and installation of a 28km hybrid umbilical.

It involves subsea works, including the installation of a manifold structure featuring high integrity pressure protection system (HIPPS), subsea isolation valve structure, valves and spoolpiece components.

The contract, which is expected to be completed in the second semester of 2015, will be executed by Technip’s operating centre in Aberdeen.

"Located in the central North Sea, about 200km north-east of Aberdeen, Scotland, the Alder field is at a water depth of about 150m."

Technip said its engineering firm Genesis will complete the detailed design work-scope, while its spoolbase in Evanton, Scotland, will fabricate the pipe-in-pipe.

DUCO, a wholly-owned subsidiary of Technip in Newcastle, England, will manufacture the umbilical, which is an assembly of steel tubes / thermoplastic hoses that can include electrical cables or optic fibres used to control subsea structures from a platform or a vessel.

Vessels from Technip’s fleet will be used for the offshore campaign, including its modern pipelay vessel, the Deep Energy.

Technip UK managing director, Bill Morrice, said the UK Continental Shelf is still an exciting place to be, with many major fields being developed both around traditional developments and in deeper waters west of Shetland, a market where the company is keen to maximise opportunities.

"Technip has a proven track record in delivering EPIC contracts of this scale and our unique vertical integration is an added-value advantage for our clients, as our capabilities cover the entire value chain for subsea infrastructures," Morrice added.

Chevron North Sea, a subsidiary of Chevron, operates the Alba, Captain, Erskine and Strathspey fields, and is a joint operator of the BLP.


Image: The contract includes installation of a 28km hybrid umbilical and assembly of steel tubes / thermoplastic hoses. Photo courtesy of Technip.

Energy