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) Classification DNV, ABS or Lloyd’s Accommodation 100 persons
Regulations IMO MODO Code 2001, IMO DP Class 2
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MAIN PARTICULARS |
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Length over all: |
101.6 m |
333.3 ft |
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Width over all: |
78.8 m |
258.7 ft |
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Width outside pontoons: |
73.4 m |
240.8 ft |
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Length of pontoons: |
80.6 m |
264.3 ft |
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Height of pontoons: |
7.5 m |
24.6 ft |
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Height to Main Deck: |
36.5 m |
119.8 ft |
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Height of deck box: |
8.0 m |
26.2 ft |
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Four columns: |
14.2 dia.m |
46.6 dia ft |
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Transit draught: |
7.2 m |
23.4 ft |
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Transit displacement: |
21,000 mt |
23,147 st |
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Transit deck & column P.load: |
3,200 mt |
3,527 st |
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Operation draught: |
20.5 m |
67.3 ft |
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Operation displacement: |
29,700 mt |
32,736 st |
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Operation deck & column P.load: |
4,200 mt |
4,629 st |
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Survival draught: |
16.2 m |
53.1 ft |
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Air gap in survival: |
12 m |
39.4 ft |
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MAIN MARINE SYSTEMS/EQUIPMENT |
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Power generation: |
6 x 3,700 kW 6 x 4,690 HP |
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Thruster: |
6 x 3000 kW 6 x 4,020 HP |
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Thruster control: |
DP 2 |
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Mooring system: |
Emergency mooring |
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Main deck cranes: |
2 x 60 mt 2 x 66 st |
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MAIN DRILLING SYSTEMS/EQUIPMENT |
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Derrick for up to 124 ft stands: |
680 mt |
750 st |
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Top drive: |
680 mt |
750 st |
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Drawwork |
680 mt |
750 st |
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Riser tensioners, wireline type: |
2,500 mt |
2,756 st |
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Drilling riser, 75 ft joints |
2,500 kips flange rating |
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Mud Pumps: |
3 x 1,700 kW |
3 x 2,200 HP |
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BOP Stack: |
15,000 psi, 5 rams |
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TANK/STORAGE CAPACITIES |
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Fuel oil: |
2,340 m³ |
14.716 bbls |
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Drill water: |
1,660 m³ |
10,440 bbls |
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Potable water: |
360 m³ |
2,264bbls |
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Mud Storage, col+pont: |
400 m³ |
2,516 bbls |
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Mud pits: |
700 m³ |
4,402 bbls |
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Brine: |
400 m³ |
2,516 bbls |
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Base oil: |
250 m³ |
1,572 bbls |
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Bulk mud: |
400 m³ |
14,100 cbft |
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Bulk cement: |
200 m³ |
7,050 cbft |
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Sack storage: |
7,500 sacks |
7,500 sacks |
References