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ZJ40DB Drilling Rig
Features:
The drawworks is driven by two AC motors with 1+1R/2+2R step-less speed, and reversal will be realized by AC motor reversal
The mud pump is driven by AC motors, which are mounted on the rear skid of mud pump, with V-belt transmission and simple structure
The independent driven rotary table runs with 1+1R/2+2R step-less speed and reversal will be realized by AC motor reversal
Using AC-DC-AC drive technology, rotary table and drawworks are four quadrant running and full digital vector control.
Single drum, gear driven and one/two shifts smooth speed change drawworks is simple in structure and reliable in operation.
Feed back/Dynamic brake is adopted to replace eddy current brake as auxiliary brake.
Automatic drilling is obtained by drawworks main motor or an independent motor. Intellectual position control for traveling block prevent crown block and rotary table from collision.
Real time communication and network is available by using PROFIBUS technology
K type mast is suitable for install top drive system
Sling shot or swing up substructure and mast are used so that all the equipment can be installed at lower position
Specification:
Model | Unit | ZJ40/2250 DB |
Nominal drilling depth(4-1/4” DP) | m | 2500-4000 |
ft | 8000-13000 | |
Max. hook load | kn | 2250 |
lbs | 500000 | |
Traveling system | 5x6 | |
Wire line dia. | mm | 32 |
In | 1-1/4 | |
Rated power of drawworks | kw | 735 |
hp | 1000 | |
Drawworks speed | I or II, smooth change | |
Braking type | Hyd. Disc brake + regeneration brake | |
Crown block | type | TC225 |
Traveling block | type | YC225 |
OD of block sheaves | mm | 1120 |
Swlive | type | SL225 |
Rotary table opening | mm | 700 |
in | 27.5 | |
Mast type and height (K type) | m | 44 |
ft | 144 | |
Substructure type and height (Swing/Slingshot) | m | 7.5 |
ft | 25 | |
Clear height under rotary beam | m | 6 |
ft | 20 | |
Mud pump number and power | kw | 2 x 956 |
hp | 2 x 1300 | |
Max. pump pressure | mpa | 35 |
psi | 5000 | |
Power drive mode | AC-DC-AC | |
Control mode | One to One/One to Two |
