Cecon Finalizes Detail Engineering of New Pipelay System

Cecon has finalized the detail engineering of the Pipe Lay Ramp for one of the most versatile systems in the industry. Flexible pipes and rigid pipe will be deployed through the same pipe lay ramp. The main advantage however is that the system offers both J-lay and reel-lay capabilities for laying rigid pipes.

The effective Reel Lay method will be employed in areas with good infrastructures served by spool bases such as the North Sea basin and the GOM while the J-lay method will be employed in remote areas when transit time and loading capacity is critical. The full advantage of the system is particularly emphasized for SCRs (Steel Cantenary Risers) when fatigue sensitive parts require the J-lay method while the rest can be installed by the reel lay method. Conversion between J-lay and reel-lay mode can be done within one to two days.

Pipe Lay System:

The main components of the lay spread are the following:

  • The main ramp supporting the bulk of the pipe lay equipment including the 200 Te tensioner
  • The Pipe Handling Tower for bringing the pipes from the storage area to the firing line
  • The pipe storage area for 4500 Te of pipe with its pipe handling system
  • The 2400 Te carousel under deck for flexible, umbilicals and power cables
  • The 1500 Te capacity reel for rigid and flexible pipes
  • Two A&R systems; up to 80 Te and between 80 and 200 Te
  • The 250 Te AHC crane to 2500 m water depth

System capabilities:

  • The system can operate in shallow to deep water only limited by the top tension capacity of 200 Te.
  • Flexible pipes ranging from 100 to 700 mm diameter
  • Rigid pipes ranging from 4 inch to 24 inch by the J-lay method
  • Rigid pipes ranging from 4 to 12 inch with the Reel-Lay method
  • J-lay method designed to handle triple joints (38 m sections)
  • PLETs/PLEMs/Connectors and In-line Ts weighing up to 30 Te

The system can be easily converted between the J-lay and reel-lay mode by exchanging the straightener unit with the welding enclosure.