Drilling Services
Key specifications of our jackup rigs: To Drilling Services

This jack-up drilling rig is recommendable addition to our growing fleet of offshore drilling rigs. The COSL BOHAI 10 is designed to provide first class drilling services in all weather environments. It holds ABS & CCS classification and is fully IMO compliance and certified. COSL has a proven track record in offshore drilling operations and assures its customers that our rigs will be operated according to stringent international and industry standards particularly in regards to Quality and HSE.

BOHAI ¢ú
Design Criteria
Max/Min Operating Water Depth: 250/16ft
Max Rated Drilling Depth: 20000 ft
Storage Capacities
Fuel Oil: 223.36 m3
Lube oil: 4.54 m3
Drilling Water: 404 m3
Potable Water: 305.8 m3
Bulk Mud: 56.6 x 2 m3
Bulk Cement: 56.6 x 2 m3
Heavy Mud Accepted: 12 m3
Total of Active Mud and Reserve Mud: 180 m3
Sack Storage: 4000(sacks)
Main Dimensions
Length Overall£º 85.388 meters
Breadth Overall: 53.645 meters
Length of Hull: 64.719 meters
Breadth of Hull: 53.645 meters
Depth of Hull: 6.096 meters
Overall Length of Leg: 109.834 meters including Spud Cans
Number of Legs: 3
Type of Legs: Independent/Triangular
Heli-Deck Diameter: 21.336 meters(across flats)
Max. Cantilever Combined Load: 397.1 tons at 40 ft/0 ft
170.3 tons at 40 ft/12 ft
Living quarters: 98 persons
Maximum Gross Variable Load
Drilling VL: 1270 t
Survival VL: 1270t
Jacking VL: 1270t
Power Equipment
Main Diesel: Caterpillar 3516DITA
Diesel Engines: 1615HP x 4, 1200 rpm
Main Generators: 1162.5KVAx4, 60Hz,0.8pf
DC MOTOR Drilling System: 4EA,GE
Drilling Equipment
Draw works: National 1320-UE
Derrick: National TYPE A
Traveling Block: National 660H500 6 x60
Crown Block: National 760-FA 7x60
Top Driver: M.H. DDM500
Rotary Table: National C-375
BOP Equipment
BOP Stack: One Set Shaffer 13-5/8" 15K
BOP Control System: Koomey T20150
Accommodation
Company Representative¡¯s Office: 1
Contractor¡¯s Representative¡¯s Office: 1
Control Room: 1
Radio Room: 1
Helicopter Assembly Room: 1
Hospital / No of Beds 1/2
Accommodations:  
Number of single rooms:
1
Number of double rooms:
3
Toilets: 9
Showers: 7
Galley: 1
Recreation Room: 1
Changing Room: 2
Deck Crane
Crane: Three Marathon PCM-120
Location: Port,Stb,fwd/Stb
Boom Length: 120ft
Block capacities and hoisting speeds:  
Load/Radius/Speed (min. radius): 55.81/23 /1.1 t/ft (ft/sec)
Load/Radius/Speed(max.radius): 13.86/85/5.2 t/ft (ft/sec)
Jacking Systems and Rack chock system
Make/type: Marathon£¬4HI-1/4
No. of jacks: 36 units
Maximum normal jacking capacity: 1,000 kips/leg
Maximum preload jacking capacity: 1,300 kips/leg
Jacking speed: 0.46 meters /min
 
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