Transocean :: Transocean Marianas

Transocean Marianas
The TRANSOCEAN MARIANAS is a Sedco 700 design semi-submersible drilling unit capable of operating in water depths up to 5,300 ft with conventional mooring and up to 7,000 ft with Operator furnished alternative mooring system.
Rig Type	Deepwater Floater
Design	Earl & Wright Sedco 700 Series Enhanced
Builder	Mitsubishi Heavy Industries (original hull); FELS Singapore & AMFELS Texas (conversion/upgrade)
Year Built	Original Hull 1979 / Upgraded 1998
Classification	ABS +A1 Column Stabilized Drilling Unit, M
Flag	Marshall Islands
Accommodation	148 beds
Helideck	72 ft x 72 ft, rated for Sikorsky S61N or S92
Moonpool	23 ft x 70 ft
Station Keeping	Moored
Max Drill Depth	30,000 ft / 9,143 m
Max Water Depth	5,300 ft / 1,615 m (conventional mooring) or 7,000 ft / 2,134 m (preset mooring)
Operating Conditions	Wave: 65 ft @ 10 sec; Wind: 70 knots; Current: 2.0 knots
Storm Conditions	Wave: 103 ft @ 16 sec; Wind: 100 knots; Current: 2.0 knots

Technical Dimensions

Length (main deck)	264 ft	80 m
Breadth (main deck)	197 ft	60 m
Main Deck Elevation Above Base Line	122 ft	37 m
Operating Draft	81 ft	25 m
Ocean Transit Draft	30 ft	9 m
VDL - Operating	4,077 st	3,700 mt

Capacities

Liquid Mud	10,000 bbls	61,516 cu ft	1,589 cu m
Drill Water	10,958 bbls	61,277 cu ft	1,742 cu m
Potable Water	2,912 bbls	16,347 cu ft	462 cu m
Fuel Oil	19,716 bbls	110,682 cu ft	3,134 cu m
Bulk Mud		7,800 cu ft	220 cu m
Bulk Cement		7,800 cu ft	220 cu m
Sack Material	7,000 sacks

Drilling Equipment

Derrick	Pyramid 174 feet x 40 feet x 40 feet; 680 mt gross nominal capacity
Drawworks	National Model 1625 UDBE 3,000 hp; 1¾in drill line
Motion Compensator	Maritime Hydraulics Crown Mounted 25 ft stroke; 600 kips compensated; 1,500 kips locked
Top Drive	Varco TDS-4S 680 mt
Rotary	Continental Emsco with 49½in opening
Pipe Handling	Maritime Hydraulics Racking Arm
Mud Pumps	3 x Continental Emsco FB 2200 7,500 psi + 1 x Contintental Emsco FA 1600 (booster pump)
Shale Shakers	2 x Derrick Cascade Flo-line Primer + 6 x Derrick FLC 2000 4 panel
Mud Cleaner	1 x Derrick 16 x 4in cones
BOP	1 x Shaffer 18¾in 10K annular preventer; 2 x Hydril LWT 18¾in 15K double preventer; 1 x Cameron TL 18¾in 15K single preventer; Vetco ExF H4 18¾in 15K wellhead connector
LMRP	1 x Shaffer 18¾in 10K annular preventer; Vetco H4 HAR 18¾in 15K riser connector
Diverter	ABB Vetco KFDS Type CSO Diverter
Control System	Hydril multiplex BOP control system
Riser	ABB Vetco HMF Type E 21in OD riser; 75ft joints with 15,000psi 4 1/2in ID C&K lines
Riser Tensioners	8 x Westech Dual 100 kips. Total capacity 1,600 kips.
Guideline Tensioners	N/A
Podline Tensioners	N/A
Choke & Kill Manifold	WOM 15,000 psi system
Cementing	Halliburton VIP diesel driven 22,000 psi unit (third party equipment)

Machinery

Main Power	6 x EMD MD-20 3,600 hp + 1 x EMD-MD-16 1,950 hp. Total available power 23,550 hp.
Emergency Power	1 x Detroit diesel driving 1 x Gulf Electric 1,500 kw 480 V AC generator
Power Distribution	Siemens SCR system
Deck Cranes	1 x Bucyrus Erie 120 ft boom, 75 st @ 30 ft; 1 x Seatrax 160 ft boom 62 st @ 30 ft; 1 x Tech TC60 100 ft boom, 20 st.

Mooring Equipment

Anchor Winches 4 x Amclyde CTW-375/53 Combination Traction Winch / Windlass Mooring System
Anchor Wire / Chain 8 x Bridon / Warrignton Seale 8,800 ft x 3¾ in wires; 8 x Hamanaka/NVRK 2,450 ft x 3.30in ABS grade NV R4 (K4) chains
Anchors 8 x 18 mt Stevpris MK V anchors
Propulsion / Thruster N/A

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