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The Fleet  Our Rigs  List by Rig Type  Discoverer 534

Fleet Specifications

Discoverer 534
The DISCOVERER 534 is a self-propelled Dynamically Positioned drillship capable of operating in moderate environments and water depths up to 7,000 feet using an 18¾in 10,000 psi BOP stack and 21in OD marine drilling riser. 
Rig Type Other Deepwater 
Design Sonat Offshore Discoverer Class, self-propelled dynamically positioned drillship 
Builder Mitsui Engineering & Shipbuilding Ltd., Osaka, Japan 
Year Built 1975/1991/1996 
Classification ABS + A1 EM drilling unit, AMS Drilling unit, SOLAS - 1974, USCG IMO MODU 
Flag Panama 
Accommodation 128 berths plus 3 berths in sick bay 
Helideck S-61; 90 ft x 92 ft; 2000 gallon refuelling system 
Moonpool  
Station Keeping Dynamically Positioned 
Max Drill Depth 26,000 ft / 7,925 m 
Max Water Depth 7,000 ft / 2,134 m 
Operating Conditions Waves: 25 ft; Wind: 50 knots 
Storm Conditions Waves: 90 ft; Wind: 100 knots 

Technical Dimensions

Length 534 ft  163 m 
Breadth 87 ft  27 m 
Depth 32 ft  10 m 
Operating Draft 25 ft  8 m 
Ocean Transit Draft 0 ft  0 m 
VDL - Operating 9,236 st  8,381 mt 

Capacities

Liquid Mud 4,200 bbls  23,581 cu ft  667 cu m 
Drill Water 12,415 bbls  69,704 cu ft  1,973 cu m 
Potable Water 1,413 bbls  7,933 cu ft  225 cu m 
Fuel Oil 19,791 bbls  111,117 cu ft  3,145 cu m 
Bulk Mud   9,600 cu ft  272 cu m 
Bulk Cement   4,800 cu ft  136 cu m 
Sack Material 2,200 sacks     

Drilling Equipment

Derrick Pyramid 170 x 46 x 54 ft; 600 mt nominal capacity 
Drawworks National 1625-DE 3000 HP w/ 1¾in wire rope w/ National UDBE disc brake & anti-birdcaging 
Motion Compensator HSMC, 218mt operating (544mt pinned) 
Top Drive Varco TDS-5, 590 mt 
Rotary National C-495 with 49½in opening 
Pipe Handling Byron Jackson hydraulically generated semi automatic pipe handling system 
Mud Pumps 3 x National 12-P-160 triplex pumps 
Shale Shakers 6 x Brandt dual tandem; (5) Brandt LCM shakers 
Desander Derrick High G dryer w/ (2) 10in cones. 
Desilter Derrick High G dryer w/ (20) 4in cones. 
Mud Cleaner N/A 
BOP 2 x Shaffer 18¾in 10,000 psi double rams; Shaffer 18¾in 5,000 psi annular preventer; Cameron 10,000 psi wellhead connector. 
LMRP Shaffer 18¾in, 5,000 psi annular; Vetco HAR-H4 10,000 psi riser connector 
Diverter Modified Regan KFDS with 14in outlets 
Control System Shaffer multiplex system. 
Riser 95 x Vetco 21 in OD, 75 foot joints 
Riser
Tensioners
726mt maximum tensioning capacity 
Guideline
Tensioners
4 x HSMC 9.07mt 
Podline
Tensioners
 
Choke & Kill McEvoy 10000 psi manifold; 2 x manually adjustable and 2 x remote controlled valves 
Cementing Halliburton ASKE-4 electric 

Machinery

Main Power 6 x EMD MD-20-645E9 diesels driving 1 x 2,500kW generator; 1 x EMD MD-12-645E8 1050kw 
Emergency Power 1 x Caterpillar 3304 90KW 
Power Distribution General Electric SCR System 
Deck Cranes 2 x Bucyrus Erie Mk 35, 80ft boom, 35mt @ 20ft; 2 x Bucyrus Erie Mk 60, 120ft boom, 47mt @ 25 ft 
Thrusters 6 x Bird-Johnson thrusters (2,500 hp each) 
Propulsion 2 x propellers 8000hp each 

Mooring Equipment

Winches Class only N/A - D.P. 
Wire/Chain Class only N/A - D.P. 
Anchors Class only N/A - D.P.