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

The COSL BO HAI8 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.

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Design Criteria
Max/Min Operating Water Depth: 246/ 16ft
Max Rated Drilling Depth: 20000 ft
Storage Capacities
Fuel Oil: 7880.8 ft3 (223.36m3)
Lube oil: 176.4 ft3 (5 m3)
Drilling Water: 42312.4 ft3 (1199.23m3)
Potable Water: 10789.542 ft3 (305.8m3)
Bulk Mud: 3994ft3 (113.2m3)
Bulk Cement: 3994ft3 (113.2 m3)
Heavy Mud Accepted: 518.661ft3 (14.7m3)
Total of Active Mud and Reserve Mud: 9702.82 ft3 (275 m3)
Sack Storage: 2000(sacks)
Main Dimensions
Length Overall£º 212.33¡¯ (64.719 meters)
Breadth Overall: 176¡¯ (53.645 meters)
Length of Hull: 230'-10" (64.719 meters)
Breadth of Hull: 249'-4" (53.645meters)
Depth of Hull: 31'-0" (6.096 meters)
Overall Length of Leg: 360.348 ft including Spud Cans
Number of Legs: 3
Type of Legs: Independent/Triangular
Heli-Deck Diameter: 21.336M
Max. Cantilever Combined Load: 1,000 kips at 45ft/0ft
500kips at 45ft/12ft
Living quarters: 98 persons per UK HSE
Maximum Gross Variable Load
Transit VL: 1164.42t
Drilling VL: 1346.5t
Survival VL: 1270t
Jacking VL: 1270t
Power Equipment
Main Diesel: Caterpillar D 3516AT I
Diesel Engines: 1187KW x 4, 1200 rpm
Main Generators: 1062.5KVAx4, 60Hz,0.8pf
DC MOTOR Drilling System: 5GE752R3A,800HP,Siemens
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: VARCO IDS-1
Rotary Table: National C-375
BOP Equipment
BOP Stack: One Set Hydril Annual 13-5/8" 5K£¬Two Set Shaffer RAM 10K
One Set Hydril 21-1/4¡± 2K
BOP Control System: KOOMEY INC.
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 1/0
Accommodations:  
Number of single rooms:
1
Number of double rooms:
3
Toilets: 14
Showers: 25
Galley: 1
Recreation Room: 2
Gym: 0
Changing Room: 2
Deck Crane
Crane: PCM£­100AS
Location: FWD Port STBD
Boom Length: FWD 100ft PORT 120ft STBD 120ft
Block capacities and hoisting speeds:  
Load/Radius/Speed (min. radius): 22.5t/ 28.2ft/24m/min
Load/Radius/Speed(max.radius): 3.4/120ft/24m/min
Jacking Systems and Rack chock system
Make/type: Marathon Letouneau co
No. of jacks: 36 units
Maximum normal jacking capacity: 681 ton/units
Maximum preload jacking capacity: 1089.6 ton/units
Jacking speed: 1.6ft/min
Rack chocks available: Yes
 
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