Bohai No.5 , jack-up drilling rig which was built in 1983 and the latest upgrade in 2002. It 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.
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COSL 931
COSL 935
COSL 941
COSL 942
Design Criteria
Max/Min Operating Water Depth:
130/25 ft
Max Rated Drilling Depth:
20,000 ft
Storage Capacities
Fuel Oil:
12,895 ft3 (365.20 m3)
Lube oil:
198 ft3 (5.6 m3)
Drilling Water:
6,010 ft3 (170.2 m3)
Potable Water:
13,832 ft3 (391.72 m3)
Bulk Mud:
3,919 ft3 (111 m3)
Bulk Cement:
4,237 ft3 (120 m3)
Heavy Mud Accepted:
2,648 ft3 (75 m3)
Total of Active Mud and Reserve Mud:
6,180 ft3 (175 m3)
Sack Storage:
2500(sacks)
Main Dimensions
Length Overall£º
249'-4" (76.0 meters)
Breadth Overall:
152'-10" (46.6 meters)
Length of Hull:
189'-0" (57.6 meters)
Breadth of Hull:
111'-6" (34.0 meters)
Depth of Hull:
18'-0" (5.5 meters)
Overall Length of Leg:
258 ft including Spud Cans
Number of Legs:
4
Type of Legs:
column
Heli-Deck Diameter:
56'-5"x 68'-11"
Max. Cantilever Combined Load:
1380 kips at 45ft/0ft
630 kips at 45ft/12ft
Living quarters:
99 persons per UK HSE
Living quarters:
118 persons
Maximum Gross Variable Load
Towing VL:
1,766kips (802.92t)
Drilling VL:
3,017kips (1370t)
Survival VL:
1,766kips (802.92t)
Jacking VL:
1,766kips (802.92t)
Power Equipment
Main Diesel:
Caterpillar 3516 TA / 5 sets
Diesel Engines:
1341HP x 5 , 1000 rpm
Main Generators:
1600KVAx5, 50Hz,
SCR units:
4 ea SCR-750
Drilling Equipment
Draw works:
National 1320-UE
Derrick:
National 20 RD
Traveling Block:
National G660
Crown Block:
National FA-760
Top Driver:
Varco IDS-1
Rotary Table:
National C-375
BOP Equipment
BOP Stack:
One Set Varco Shalfer 13-5/8" 10K
One Set Hydril 21-1/4¡± 2K BOP Stack
BOP Control System:
Koomey Ltd. Type 80¡¯
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:
7
Toilets:
12
Showers:
16
Galley:
2
Recreation Room:
2
Gym:
1
Changing Room:
2
Deck Crane
Crane:
Two sets / BMC 2250D
Location:
Port / Stb fwd
Boom Length:
93 ft
Load capacity main hoist:
40.5 Ton
Load capacity aux. Hoist:
5.4 Ton
Lifting capacity versus radius:
93.0 ft
Jacking ¨C up Systems
Baker Marine / Hydraulic Jack-up
National 400 system
No. of jacks:
4 units
Maximum jacking capacity:
12,115 kips (5500 t)
Jacking speed:
13.8 m/hrs
