GVA 40000

The GVA 40 000 is the largest semi-submersible in the world. It is a combined production, drilling and quarters semi-submersible (PDQ). The dual derrick is a real state of the art drilling system. The unit is designed for the Thunder Horse Field in the Gulf of Mexico. This unit got it all.

 

Name                           Thunder Horse

Location                      Gulf of Mexico 240 km

                                    (150 miles) South of New Orleans

Water depth                 1,840 m (6,040 ft)

Status                          Installed 2005

Owner                         BP and ExxonMobil

Design                         GVA

Top Design                  Mustang Engineering

Regulatory/Class         MMS/USCG/ABS

 
 

 

 

 

 

 

 

 

MAIN PARTICULARS

 

 

 Length over all:

 164.0 m

 538.1 ft

 Width over all:

 126.0 m

 413.4 ft

 Length of pontoons:

 110.0 m

 360.9 ft

 Height to Upper Deck:

 57.5 m

 188.6 ft

 Topside Load:

 50,500 tonnes

 111,338 kips

 Deck Drilling Payload:

 7,000 tonnes

 15,433 kips

 Light Unit Weight:

 78,000 tonnes

 171,967 kips

 Displacement:

 130,000 tonnes

 286,612 kips

 Draught:

 30.0 m

 98.4 ft

 Air gap in survival:

 17.5 m

 57.4 ft

VESSEL CAPACITIES

 

Oil Production:

  250,000 BOPD

Gas Production :

  200 MMSCFPD

Gas lift:

  60 MMSCFPD

Water Injection:

  300,000 BWPD

Risers:

  14 SCR,4 Flexibles

Drilling:

  Drilling Derrick, Drill Depth  30,000 ft

Accommodation:

  188 persons

Station Keeping:

 16 point semi-taut chain-wire-chain system

 

References

Thunder Horse