FPSO Stybarrow Venture MV16 Internal Disconnectable Turret
Scope of Work
SOFEC designed, constructed and supplied a disconnectable internal turret mooring system to moor a 150,000 dwt MODEC-newbuild FPSO in 825m water depth.
This unique SOFEC internal disconnectable turret mooring system is ABS classed.
General Description
| Client Name: | BHP Billiton Petroleum |
| Contract Award: | March 2006 |
| Installation Date: | September 2007 |
| First Oil: | November 2007 |
| Vessel Size: | 160,000 dwt |
| Storage Capacity: | 900,000 bbls |
| Water Depth: | 825m (2,706ft) |
| Supply / Fabrication: | Turret - Malaysia Vessel - Korea |
Design Environmental Criteria
100-year storm
| Significant Wave Height: | 6.6m (21.6ft) |
| Wind Velocity: | 20m/s (38.8 knots) |
| Surface Current: | 1.1m/s (2.1 knots) |
Mooring System
Turrets
Spider Buoy
9-leg 3×3, chain, wire rope support buoys and drag anchor
Disconnectable Internal
Fluid Swivel Assembly
| Production 1: | 2 X 12-in. toroids (ANSI Class 1500) |
| Production 2: | 2 X 12 in. toroids (ANSI Class 1500) |
| Test Swivel: | 2 X 12-in. toroid (ANSI Class 1500) |
| Gas Lift: | 1 X 4-in. toroid (ANSI Class 1500) |
| Gas Injection: | 1 X 4-in. toroid (ANSI Class 2500) |
| Eskdale Production: | 1 X 6-in. toroid (ANSI Class 2500) |
| Water Injection: | 1 X 8-in. toroid (ANSI Class 1500) |
| Chemical/Utility: | 15 paths X 5000psi |
| Electrical Slip Ring Assembly: | 5 paths X 10,000psi |
| Low Voltage Power/Signal: | 98 paths |
| Fiber optical Rotary Joint | 10 multimode |
Riser System
2 x 10-in. Flexible pipe – Production (Provision for 2 x 12-in. future)
2 x 8-in. Flexible pipe – Production
2 x 7-in. Flexible pipe – Production
1 x 6-in. Flexible pipe – Production
1 x 10-in. Flexible pipe – Water Injection
1 x 6-in. Flexible pipe – Gas Injection
1 x 6-in. Flexible pipe – Gas lift
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 disconnectable internal turret mooring system.