GVA 7500 Arctic

 

Operation area               Harsh environment, Arctic

Operation water depth   70 - 500 m (230 - 1,640 ft)

                                       DP assisted mooring

Drilling depth                  Up to 12,000 m (40,000 ft)
Classification                  DNV plus Norwegian Authorities

                                       ICE 15, ICE1C

Accommodation             160 persons

 

 

  

 

 MAIN PARTICULARS  

 Length over all:

 115.2 m

 378.0 ft

 Width over all:

 100.8 m

 330.7 ft

 Width outside pontoons:

 78.1 m

 256.2 ft

 Length of pontoons:

 108.8 m

 356.9 ft

 Height  of pontoons:

 13.4 m

 44.1 ft

 Height to Upper Deck:

 48.7 m

159.8 ft

 Height of deck box:

 9.0 m

 29.5 ft

 Four columns:

 18.4 x 17.3 m

 60.4 x 56.8 ft

 Light Unit Weight:

 41,000 mt

 45,200 st

 Transit draught:

 13.1 m

 43.1 ft

 Transit displacement:

 54,000 mt

 59,520 st

 Transit deck & column P.load:

 4,000 mt

 4,400 st

 Operation draught:

 26.2 m

 86.0 ft

 Operation displacement:

 75,700 mt

 83,440 st

 Operation deck & column P.load:

 5,500 mt

 6,060 st

 Survival draught

 22.2 m

 72.8 ft

 Air gap in survival:

 17.5 m

 57.4 m

 Operation draft (ice condition):

 35.7 m

 117.1 ft

 MAIN MARINE SYSTEMS/EQUIP.                      

 Power generation:

 8 x 5,500 kW

 Thruster:

 8 x 4,000 kW

 Thruster control:

 DP 3

 Mooring system:

 16 point, all chain

 Main deck cranes:

 2 x 85 mt                   2 x 93 st

 MAIN DRILLING SYSTEMS/EQUIP. 

 Derrick for up to 135 ft stands:

 1,135 mt

 1,250 st

 Top drive:

 1,135 mt

 1,250 st

 Riser tensioners, wire line type:

 580 mt

 640 st

 Drilling riser, 75 ft joints

 2,000 kips flange rating

 Mud pumps:

 4 x 1,700 kW

 BOP Stack:

 15,000 psi, 6 rams

 Draw works, active heave compensating type

 TANK/STORAGE CAPACITIES

 Fuel oil:

 4,500

 28,300 bbls

 Drill water:

 3,600

 22.640 bbls

 Potable water:

 1,000 m³

 6,290 bbls

 Mud Storage, col+pont:

 2,100 m³

 13,200 bbls

 Mud pits:

 900 m³

 5,660 bbls

 Brine:

 1,200 m³

 7,550 bbls

 Base oil:

 1,200 m³

 7,550 bbls

 Bulk mud:

 620 m³

 22,000 ft³

 Bulk cement:

 280 m³

10,000 ft³

Sack storage:

7,500 sx