FPSO MODEC Venture MV11 Internal Disconnectable Turret
Scope of Work
SOFEC designed and constructed a disconnectable internal turret mooring system to moor a 150,000 dwt MODEC-converted FPSO in 156m water depth.
General Description
| Client Name: | Santos Ltd. |
| Contract Award: | October 2003 |
| Installation Date: | January 2005 |
| First Oil: | March 2005 |
| Vessel Size: | 150,000 dwt |
| Storage Capacity: | 930,000 bbls |
| Water Depth: | 156m (512ft) |
| Supply / Fabrication: | Turret - Singapore Vessel - Singapore |
Design Environmental Criteria
(100-year storm)
| Significant Wave Height: | 5.1m (16.7ft) |
| Wind Velocity: | 25m/s (48.6 knots) |
| Surface Current: | 1.3m/s (2.5 knots) |
Mooring System
Turrets
Spider Buoy
6-leg Symmetric, chain, wire rope and drag anchor
Disconnectable Internal
Fluid Swivel Assembly
| Production: | 3 x 8-in. toroid (ANSI Class 1500) |
| Water Injection: | 1 x 8-in. toroid (ANSI Class 1500) |
| Well Service: | 2 x 2-in. toroid (ANSI Class 1500) |
| Chemical/Utility: | XX paths x 5,500 psi |
| Electrical Slip Ring Assembly: | |
| Medium Voltage: | 62 paths x 6.6 KV |
| Low Voltage/Signal: | 172 paths |
Riser System
2 x 12-in. Flexible pipe – Production (Provision for 1 x 12-in. future)
1 x 12-in. Flexible pipe – Water Injection
2 x 2-in. Flexible pipe – Well Service
4 x Medium voltage power umbilical – Subsea Power
2 x Integrated service umbilical – Subsea Control (Provision for 1x future ISU)
Comments
When a cyclone approaches, the FPSO can easily temporarily evacuate from the field by the unique SOFEC internal disconnectable turret mooring system.