GVA 4000

The GVA 4000 drilling semi-submersible was designed for world wide operations with the following objectives:

 

 

Operation area               Moderate environment

Operation water depth   1,800 m (6,000 ft)

Drilling depth                  Up to 9,140 m (35,000 ft)
Regulations                    IMO MODO Code 2001, IMO DP Class 2

Classification                  DNV, ABS or Lloyd’s

Accommodation             100 persons

 

 

 

 

 MAIN PARTICULARS  

 Length over all:

 101.6 m

 333.3 ft

 Width over all:

 78.8 m

 258.7 ft

 Width outside pontoons:

 73.4 m

 240.8 ft

 Length of pontoons:

 80.6 m

 264.3 ft

 Height  of pontoons:

 7.5 m

 24.6 ft

 Height to Main Deck:

 36.5 m

 119.8 ft

 Height of deck box:

 8.0 m

 26.2 ft

 Four columns:

 14.2 dia.m

 46.6 dia ft

 Transit draught:

 7.2 m

 23.4 ft

 Transit displacement:

 21,000 mt

 23,147 st

 Transit deck & column P.load:

 3,200 mt

 3,527 st

 Operation draught:

 20.5 m

 67.3 ft

 Operation displacement:

 29,700 mt

 32,736 st

 Operation deck & column P.load:

 4,200 mt

 4,629 st

 Survival draught:

 16.2 m

 53.1 ft

 Air gap in survival:

 12 m

 39.4 ft

 MAIN MARINE SYSTEMS/EQUIPMENT                   

 Power generation:

 6 x 3,700 kW               6 x 4,690 HP

 Thruster:

 6 x 3000 kW                6 x 4,020 HP

 Thruster control:

 DP 2

 Mooring system:

 Emergency mooring

 Main deck cranes:

 2 x 60 mt                    2 x 66 st

 MAIN DRILLING SYSTEMS/EQUIPMENT

 Derrick for up to 124 ft stands:

 680 mt

 750 st

 Top drive:

 680 mt

 750 st

 Drawwork

 680 mt

 750 st

 Riser tensioners, wireline type:

 2,500 mt

 2,756 st

 Drilling riser, 75 ft joints

 2,500 kips flange rating

 Mud Pumps:

 3 x 1,700 kW

 3 x 2,200 HP

 BOP Stack:

 15,000 psi, 5 rams

 TANK/STORAGE CAPACITIES

 Fuel oil:

 2,340 m³

 14.716 bbls

 Drill water:

 1,660 m³

 10,440 bbls

 Potable water:

 360 m³

 2,264bbls

 Mud Storage, col+pont:

 400 m³

 2,516 bbls

 Mud pits:

 700 m³

 4,402 bbls

 Brine:

 400 m³

 2,516 bbls

 Base oil:

 250 m³

 1,572 bbls

 Bulk mud:

 400 m³

 14,100 cbft

 Bulk cement:

 200 m³

 7,050 cbft

Sack storage:

 7,500 sacks      

 7,500 sacks

 

References

Transocean Winner