Nexans DEH System in Deep ...

Press Release
Thursday, May 09, 2013
Nexans DEH System: Image courtesy of Nexans

Subsea 7 takes Nexans DEH system deeper than ever before for Chevron’s Lianzi project off SW Africa.

The Lianzi development (located in a unitized offshore zone between the Republic of Congo and the Republic of Angola) will include the world’s deepest installation of a Direct Electrical Heating (DEH) system of subsea production pipelines. Nexans say that their field-proven DEH solution provides eco-friendly and cost-effective flow assurance for subsea production pipelines. The contract with Subsea 7 is valued at approximately 25 million Euro, and the field is operated by Chevron Overseas (Congo) Limited.

The Lianzi fields tie back to the Benguela Belize Lobito Tomboco (BBLT) platform located in Angola Block 14. With a water depth between 390 and 1,070 meters, this will be the world’s deepest DEH system.

The contract with Subsea 7 covers the delivery of a complete DEH system, including DEH Riser Cable, Armored Feeder Cable, a 43 km long Piggyback Cable and all associated accessories for connection to the pipeline that will connect the Lianzi Development Project subsea facilities with the BBLT platform. The Piggyback Cable incorporates Nexans’ field proven Integrated Protection System (IPS).

Direct electrical heating (DEH) is a technology for flow assurance, developed to safeguard the wellstream through the pipeline to the platform. Alternating current (AC) transmitted from the DEH cable runs through the steel in the pipe, which heats up due to its own electrical resistance. By controlling the current, the pipeline inner wall can at all times be maintained above the critical temperature for wax and hydrate formation. The DEH system eliminates the need for chemical injection, pressure evacuation or other flow assurance methods that might have environmental or operational challenges. DEH allows the pipeline to be operated in a cost efficient and environmentally safe manner.

“This latest project with Subsea 7 is a further confirmation of Nexans’ position as the prime supplier for the development and implementation of DEH systems,” says Eldar Ystad, Sales Manager DEH systems, Nexans. “Over the past 15-20 years, Nexans has supplied 19 out of the 20 pipelines operating with DEH systems."

The cables for the Lianzi DEH system will be manufactured at the Nexans factory in Halden, Norway, for delivery during the summer of 2014.

 

 

Maritime Reporter November 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Contracts

Wärtsilä to Begin Building LNG Terminal in January

Wärtsilä has been given full notice to proceed (NTP) from Manga LNG Oy for the supply of a liquefied natural gas (LNG) import terminal in Tornio, Northern Finland.

Polarcus Awarded 3D Project Off West Africa

Polarcus Limited has signed a letter of intent with Perenco Oil & Gas Gabon S.A. for a 3D marine seismic acquisition project offshore West Africa.   The project,

Boskalis, VolkerWessels Win Offshore Wind Farm Work

Royal Boskalis Westminster N.V., in partnership with Volker Stevin International (VolkerWessels), has been awarded a contract by Iberdrola Renewables Offshore Deutschland

Underwater Engineering

DNV GL Targets Safer Approach to Subsea Lifting

The completion of a joint industry project (JIP) to improve existing standards and regulations around subsea lifting operations has resulted in a new recommended practice (RP).

Lowrance Renews Insight Genesis College Cup

Lowrance®, a world-leading brand in fishing electronics since 1957— announced today the renewal of its Insight Genesis™ College Cup. In its second year, the

Japan Gains Edge in Australia Submarine Deal

Australia and Japan appear to be inching closer to an agreement on the sale the top-secret technology from Japan to build a fleet of new generation submarines.

 
 
Maritime Contracts Maritime Security Maritime Standards Navigation Offshore Oil Pod Propulsion Ship Electronics Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1323 sec (8 req/sec)