FPSO Perintis External Turret
Scope of Work
SOFEC designed and constructed an external cantilevered turret mooring system for a permanently moored FPSO conversion.
The FPSO Perintis is installed near three fixed satellite production platforms located in the MASA fields offshore Malaysia. The FPSO is designed to produce a total of 55,000 BPD of combined fluids
including 35,000 BPD of crude oil and 100 MMscfd of gas. Processed crude is exported through a tandem offloading arrangement and the produced gas is exported through subsea pipelines. Water injection
is also provided by the FPSO’s topsides facilities to the field and has a maximum capacity of 25 MBPD.
This SOFEC external turret mooring system is ABS classed.
General Description
| Client Name: | Trenergy FPSO SDN BHD |
| Contract Award: | January 1998 |
| Installation Date: | March 1999 |
| First Oil: | April 1999 |
| Vessel Size: | 94,236 dwt |
| Storage Capacity: | 640,000 bbls |
| Water Depth: | 75m (246ft) |
| Fabrication: | Turret - Malaysia Vessel - Malaysia Topsides - Asia |
Design Environmental Criteria
(100-year storm)
| Significant Wave Height: | 5.5m (18 ft) |
| Wind Velocity: | 22m/s (43 knots) |
| Current: | 1m/s (1.8 knots) |
Mooring System
Turrets
6-leg Symmetric weighted catenary:
6-in. Stud link chain
12mt Drag embedment anchors
3.5-in. ORQ top chain
Permanent External Cantilevered
Fluid Swivel Assembly
| Water Injection: | 1 x 6-in. 900# (1,407 psi design) |
| Production: | 2 x 10-in. 900# (1,014 psi design) |
| Gas Lift Swivel: | 1 x 6-in. 900# (1,930 psi design) |
| Gas Export: | 1 x 6-in. 900# (1,930 psi design) |
| Hydraulic Utility Swivel: | 13 paths (3,000 psi design) |
| Electrical Utility Slipring: | 16 paths |
Riser System
1 x 16-in. Flexible riser (crude)
2 x 14-in. Flexible riser (crude)
1 x 12-in. Flexible riser (gas export)
1 x 6-in. Flexible riser (water injection)
1 x 4-in. Flexible riser (gas lift)