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

This jack-up drilling rig joined in our growing fleet of offshore drilling rigs since 1989. The COSL BOHAI 12 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 ¢ü
Design Criteria
Max/Min Operating Water Depth: 56/45 m
Max Rated Drilling Depth: 6,000 m
Storage Capacities
Fuel Oil: 12,006 ft3 (340m3)
Lube oil: 198 ft3 (5.6 m3)
Drilling Water: 15,538 ft3 (440 m3)
Potable Water: 8,934ft3 (253 m3)
Bulk Mud: 4,661 ft3 (132 m3)
Bulk Cement: 4,661 ft3 (132 m3)
Total of Active Mud and Reserve Mud: (308 m3)
Sack Storage: about 5000(sacks)
Main Dimensions
Length Overall£º 183'9" (56 meters)
Breadth Overall: 157'6" (48 meters)
Depth of Hull: 21'-6" (6.563 meters)
Overall Length of Leg: 277'3"£¨84.5 meters£©ft including Spud Can
Number of Legs: 3
Type of Legs: Square Trussed Leg
Heli-Deck Diameter: 70'£¨Acrossf flats£©
Max. Cantilever Combined Load: 2,600 kips at 40ft/0ft
1,109 kips at 75ft/15ft
Living quarters: 100 persons
Maximum Gross Variable Load
Transit VL: 2,333kips (1050t)
Drilling VL: 4,800kips (2160t)
Survival VL: 3,111kips (1400t)
Jacking VL: 3,555kips (1600t)
Power Equipment
Main Diesel: Caterpillar 3516TA
Diesel Engines: 1615HP x 4, 1200 rpm
Main Generators: 1750KVAx4, 60Hz, 0.7pf
Drilling Equipment
Draw works: National 1320-UE
Derrick: Continental Emsco
Traveling Block: IDECO UTB-525
Crown Block: Continental Emsco RA-60-7-750TB
Top Driver: VARCO IDS-1
Rotary Table: Continental Emsco T-375
BOP Equipment
BOP Stack: One Set Shaffer 13-5/8" 10K Double BOP
One Set Shaffer 13-5/8" 10K Single BOP
One Set Shaffer 13-5/8" 5K Annual BOP
BOP Control System: Koomy Control System
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:
2
Number of double rooms:
2
Number of four-persons rooms:
5
Number of six-persons rooms:
13
Toilets: 12
Showers: 15
Galley: 1
Recreation Room: 2
Gym: 1
Changing Room: 1
Deck Crane
Crane: Two Favco/Favelle 6/10K
Location: Port/Stb.
Boom Length: 122ft
Block capacities and hoisting speeds:  
Load/Radius/Speed (min. radius): 40.8/7.5 (t/m)
Load/Radius/Speed(max.radius): 6.4/36.6 (t/m)
Jacking Systems and Rack chock system
Make/type: MHI Japan/
No. of jacks: 36 units
Maximum normal jacking capacity: 441 kips£¨200ton£©/units
Maximum preload jacking capacity: 881 kips£¨400ton£©/units
Jacking speed: 1 ft/min
Rack chocks available: Yes
 
©Copyright 2006-2007,China Oilfield Services Limited. Legal Disclaimer