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The Fleet  Our Rigs List by Rig Type Transocean Marianas
Fleet Specifications
| Transocean Marianas |
| The TRANSOCEAN MARIANAS is a Sedco 700 design semi-submersible drilling unit capable of operating in harsh environments and water depths up to 7,000 feet using a 18¾in, 15,000 psi BOP and a 21in OD marine riser. |
| Rig Type |
Other Deepwater |
 |
| Design |
Earl & Wright Sedco 700 Series Enhanced |
| Builder |
Mitsubishi (original hull) FELS (Conversion), Singapore; AMFELS (Brownsville, TX) |
| Year Built |
1998 |
| Classification |
ABS A1 Column Stabilized Unit; AMS; ACCU; DP S2 |
| Flag |
Marshall Islands |
| Accommodation |
150 berths |
| Helideck |
72ft x 72ft, rated for Sikorsky S-92 |
| Moonpool |
23 feet x 69 feet |
| Station Keeping |
Moored |
| Max Drill Depth |
25,000 ft / 7,620 m |
| Max Water Depth |
7,000 ft / 2,134 m |
| Operating Conditions |
Significant Wave: 25ft; Wind: 50 knots; Current: 2.0 knots |
| Storm Conditions |
Maximum Wave: 103.7ft; Wind: 80 knots; Current: 2.5 knots |
Technical Dimensions
| Length |
264 ft |
80 m |
| Breadth |
197 ft |
60 m |
| Depth |
122 ft |
37 m |
| Operating Draft |
81 ft |
25 m |
| Ocean Transit Draft |
30 ft |
9 m |
| VDL - Operating |
4,107 st |
3,727 mt |
Capacities
| Liquid Mud |
10,000 bbls |
56,145 cu ft |
1,589 cu m |
| Drill Water |
10,914 bbls |
61,277 cu ft |
1,734 cu m |
| Potable Water |
2,924 bbls |
16,417 cu ft |
465 cu m |
| Fuel Oil |
18,507 bbls |
103,908 cu ft |
2,941 cu m |
| Bulk Mud |
|
7,800 cu ft |
221 cu m |
| Bulk Cement |
|
7,800 cu ft |
221 cu m |
| Sack Material |
0 sacks |
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Drilling Equipment
| Derrick |
Pyrmid; 174 feet x 40 feet x 40 feet; 680mt nominal capacity, National 1625 UDBE; 3000hp -1¾in drill line, , , , , , , , |
| Drawworks |
National Model 1625 UDBE, Disc Brakes, 3 GE 752 Motors |
| Motion Compensator |
Maritime Hydraulics(crown mounted) 272mt operating (680mt pinned). |
| Top Drive |
Varco TDS-4S, 750mt |
| Rotary |
Continental Emsco with 49½in opening (KT Housing 48 5/8in) |
| Pipe Handling |
Maritime Hydraulics racking arm |
| Mud Pumps |
3 x Continental Emsco, triplex pumps-2200 hp and 1X1600 Contn/Emsco |
| Shale Shakers |
6 x Derrick 4 panel Hi-G |
| Desander |
See desilter |
| Desilter |
1 x Derrick w/ (16) 4in cones (882gpm) |
| Mud Cleaner |
2 x Derrick Flowline Primers |
| BOP |
Shaffer 10,000psi 18¾in annular, 2 x Hydril 18¾in 15,000 psi double rams; Vetco H4 15,000 psi wellhead connector; 1 x Cameron 18 3/4in 15,000 psi inverted single ram |
| LMRP |
Shaffer 10,000psi 18¾in annular, Vetco HA-H4 15,000 psi riser connector |
| Diverter |
Vetco, 5,000 psi w/ 3 x 12in OD flowlines |
| Control System |
Hydril multiplex BOP control system |
| Riser |
94 x Vetco 21in OD riser; 75ft joints with 15,000psi 4 1/2in ID C&K lines |
Riser
Tensioners |
725mt max. tensioning capacity |
Guideline
Tensioners |
Not Required |
Podline
Tensioners |
Not Required |
| Choke & Kill |
WOM 15,000 psi system with 2 x super and 2 x power chokes |
| Cementing |
Halliburton VIP diesel driven 22,000 psi unit |
Machinery
| Main Power |
6 x EMD MD-20 3,600hp, 6 x 2,500 generator, 1 x EMD-MD-16 1,950hp, 1400 generatorgenerator |
| Emergency Power |
1 x Detroit diesel driving 1 x Gulf Electric 1500 kw AC generator |
| Power Distribution |
Siemens SCR system |
| Deck Cranes |
1 x Buctrus Erie 120ft booms, 75mt @ 30deg; MH Bridge Crane, 2 x 18.5mt; 1 Seatrax 160 foot Boom, 75mt |
| Thrusters |
| Winches |
4 x Amclyde CTW-375 winches |
| Wire/Chain |
8 x 9,400ft x 3¾in cable; 8 x 2,500ft x 3¼in K4 chain |
| Anchors |
8 x 18mt Stevpris anchors | |
| Propulsion |
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Mooring Equipment
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