Ormen lange

Demanding topology

DEH Ormen Lange w510



Nexans DEH Ormen Lange umbilical w120Project description:

  • The Ormen Lange Field is situated some 120 km northwest of Norway's Møre coast at a depth of 850 m and will be able to meet up to 20 per cent of the UK’s gas requirements for up to 40 years.
  • All equipment is situated on the seafloor and controlled from onshore; there is no platform or other equipment at the surface.
  • The development of the Ormen Lange Field in the Norwegian Sea, which began in 2006, is one of the largest and most demanding industrial projects ever undertaken. The operator of the field is Shell.

Challenges of the project:

  • Difficult bottom conditions with a demanding topology which imposed special requirements for adaptation of the seafloor with Nexans’ subsea excavator, Spider.
  • Vertical fall of up to 30 degrees.


Nexans DEH Ormen Lange w120 Nexans' solution:
  • Two main steel tube umbilicals of 125 km each and one infield umbilical of 4 km installed in 2006 and 2007.
  • Umbilicals from Nyhamna to the Ormen Lange Field supply hydraulic fluid, electrical power and fibre-optic signals which will operate the production system under water.
  • Ormen Lange is one of the longest umbilicals to have been delivered. 
  • Levelling of the seafloor with Spider.
  • Infield length to the Southern Field delivered in 2009.
  • Infield length to the Northern Field will be delivered in 2012.