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

This jack-up drilling rig is the latest addition to our growing fleet of offshore drilling rigs. The COSL NH1 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.

NANHAI ¢ñ
Design Criteria
Max/Min Operating Water Depth: 154/30 ft
Max Rated Drilling Depth: 20,000 ft
Storage Capacities
Fuel Oil: 28,040 ft3 (794 m3)
Lube oil: 141 ft3 (4.0 m3)
Drilling Water: 30,618 ft3 (867 m3)
Potable Water: 14,126 ft3 (400m3)
Bulk Mud: 5,933 ft3 (168 m3)
Bulk Cement: 5,933 ft3 (168 m3)
Heavy Mud Accepted: 389 ft3 (11 m3)
Total of Active Mud and Reserve Mud: (330 m3)
Sack Storage: 4000(sacks)
Main Dimensions
Length Overall£º 311¡¯ (94.7 meters)
Length of Hull: 213' (64.92meters)
Breadth of Hull: 212¡¯ (64.92 meters)
Depth of Hull: 27¡¯ (8.27 meters)
Overall Length of Leg: 290 ft including Spud Cans
Number of Legs: 3
Type of Legs: Independent/Triangular
Heli-Deck Diameter: 75' x 75¡¯
Max. Cantilever Combined Load: 2,000 kips at 0ft
660 kips at 60ft
Living quarters: 106 persons per UK HSE
Maximum Gross Variable Load
Transit VL: 3,924kips (1780t)
Drilling VL: 5,500kips (2500t)
Survival VL: 3,924kips (1780t)
Jacking VL: 2,646kips (1200t)
Power Equipment
Main Diesel: Caterpillar 3516 DITA
Diesel Engines: 1230.5KW x 4, 1200 rpm
Main Generators: 1950KVAx5, 60Hz, 0.6pf
DC MOTOR Drilling System: 5 EA, 1200KW, TPC
Drilling Equipment
Draw works: National 1320-UE
Derrick: PYRAMID base30¡¯x30¡¯ up 8¡¯x8¡¯ high 147¡¯
Traveling Block: National 650G500 6x60
Crown Block: National 760-FA 7x60
Top Driver: VARCO IDS-1
Rotary Table: National C-375
BOP Equipment
BOP Stack: One Set Shaffer 13-5/8" 15K
One Set Hydril 21-1/4¡± 2K BOP Stack
BOP Control System: KOOMEY Offshore System Inc
Accommodation
Company Representative¡¯s Office: 2
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 double rooms:
7
Number of 4 mens rooms:
6
Number of 6 mens rooms: 10
Number of 8 mens rooms: 1
Toilets: 14
Showers: 14
Galley: 1
Recreation Room: 1
Gym: 1
Changing Room: 1
Deck Crane
Crane: Two Amclyde Unit 10000HD &One National Oilwell 60DNS110-1.75
Location: Port/Stb fwd/Stb Aft.
Boom Length: 110ft
Block capacities and hoisting speeds:  
Load/Radius/Speed(min.radius): 46/25 /1.1t/ft (ft/sec)
Load/Radius/Speed(max.radius): 12/110/5.2t/ft (ft/sec)
Jacking Systems and Rack chock system
Make/type: NATIONAL/4-PINION
No. of jacks: 48 units
Maximum normal jacking capacity: 800 kips/units
Maximum preload jacking capacity: 800 kips/units
Jacking speed: 1.0 ft/min
Rack chocks available: Yes
 
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