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

The COSL BOHAI9 is designed to provide first class drilling services in all weather environments. It holds 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 ¢ù
Design Criteria
Max/Min Operating Water Depth: 40m
Max Rated Drilling Depth: 6000m
Storage Capacities
Fuel Oil: 365.4 m3
Lube oil: 29.8 m3
Drilling Water: 170.2 m3
Potable Water: 391.7 m3
Bulk Mud: 111 m3
Bulk Cement: 111 m3
Total of Active Mud and Reserve Mud: 225 m3
Hydraulic pressure oil: 44.7 m3
Main Dimensions
Length Overall£º 76.0 meters
Breadth Overall: 46.6 meters
Length of Hull: 57.6 meters
Breadth of Hull: 34.0 meters
Depth of Hull: 5.5 meters
Overall Length of Leg: 78 meters
Number of Legs: 4
Type of Legs: Independent/Column
Heli-Deck Diameter: 17.2¡Á21.0meters
Max. Cantilever Combined Load: N/A
Living quarters: 95 persons
Maximum Gross Variable Load
Transit VL: 460t
Drilling VL: 1500t
Survival VL: 1000t
Jacking VL: 460t
Power Equipment
Main Diesel: Caterpillar D399
Diesel Engines: 1095hp x 5, 1000 rpm
Main Generators: 1062.5KVAx5, 50Hz 0.8pf
DC MOTOR Drilling System: GE DS3840WD 1800A
Drilling Equipment
Draw works: CONTINENTAL EMSCO C-¢ò
Derrick: CONTINENTAL EMSCO 20 RD
Traveling Block: National 660G500
Crown Block: CONTINENTAL EMSCO RA-52-71-3/8¡±¡Á12LINES
Top Driver: VARCO.BJ IDS-1
Rotary Table: CONTINENTAL EMSCO T-3750 RT-3A
BOP Equipment
BOP Stack: KOOMEY SU2KD6S T30160-3S 1SET
BOP Control System: KOOMEY TYPE 80 2SET
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 1/1
Accommodations:  
Number of single rooms:
1
Number of double rooms:
4
Toilets: 6
Number of fourth rooms:
16
Number of sixth rooms:
3
Toilets: 8
Showers: 7
Galley: 1
Recreation Room: 2
Gym: 1
Changing Room: N/A
Deck Crane
Crane: Two F.W.C CORPORATION
Location: Port / Stb
Boom Length: 80ft
Block capacities and hoisting speeds:  
Load/Radius/Speed (min. radius): 23T / 22ft / 0.5ft/sec
Load/Radius/Speed(max.radius): 6T / 77ft / 3ft/sec
Jacking Systems and Rack chock system
Make/type: Dalian Shipyard/Hydraulic jackingup
Maximum normal jacking capacity: 2100Tons/per leg
Maximum preload jacking capacity: 2100Tons/per leg
Jacking speed: 13meters/hour
Rack chocks available: N/A
 
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