Offshore staff
VIANA DO CASTELO, Portugal – SBM Offshore has contracted Lankhorst Offshore to supply the deepwater mooring lines for the FPSO Liza Unity for ExxonMobil’s Liza Phase 2 oil field development offshore Guyana.
The FPSO Liza Unity will be spread moored at a water depth of 1,600 m (5,249 ft) with 20 Cabral 512 deepwater mooring lines with a minimum breaking strength of 12,300 kN. Each mooring line measures 2,320 m (7,612 ft) in length. When deployed the mooring line will comprise a chain top segment, polyester rope middle segment and chain bottom segment, connected to a suction pile anchor.
According to Lankhorst, the ABS class approved Cabral 512 rope construction features a specially designed filter, preventing ingress of sand while the mooring lines are pre-laid on the seabed ahead of the FPSO arriving on station.
The Cabral 512 ropes will be manufactured at the company’s factory in Viana do Castelo, Portugal.
The Liza Unity is based on SBM Offshore’s Fast4Ward FPSO design. For these two Liza FPSOs, Lankhorst Offshore has developed a ‘standardized’ deepwater mooring model to reduce lead times.
In addition to reducing the number of shipping reels by loading longer mooring line lengths or multiple segments on each reel, Lankhorst has also introduced reusable shipping rope reels/cradles which can be returned to its manufacturing facilities. These enable a more sustainable supply of deepwater mooring lines, the company said. The Liza Unity mooring lines will reuse the 16 shipping reels returned from the Liza Destiny mooring.
03/19/2020
