Drilling Machine Rig of ZJ40/2250DB

Features:
1 ZJ40/2250DB AC drilling rig is suitable for the exploration of petroleum and gas wells with a depth of 2000-3200m by 127mm drilling rod, or a depth of 2500-4000m by 114mm drilling rod.
2. AC-DC-AC drive system.
3. Single shaft drawwork, drum notch. Hydraulic disc type brake is adopted as the main, while energy-losing brake or ETN brake is adopted as the auxiliary.
4. The rotary table adopts independent drive.
5. Parallelogram seat realizes the low-level installation of table-board equipments and derrick, then rises them up by right of drawwork.
6. The main mechanical components of drilling rig follow the standard of API with marks.
Technical Parameters
1. Nominal range of drilling depth 　　　　　φ127mm drilling rod　2000～3200m
φ114mm drilling rod　2500～4000m
2. Max hook load 　　　　　　　　　2250KN
3. Rated power of drawwork　 　　　　　　735kw
Main brake 　　　　　　　　　　Hydraulic disc type brake
Auxi-brake 　　　　　　　　　Energy loosing /236WCB
4. Cord of hoisting system 　　　　　　　5×6 straight
5. Steel wire diameter 　　　　　　φ32mm(1'/4″)
6. Diameter of tap’s central tube 　　　　　φ75mm
7. Type & quantity of mud pump 　　　　　F1300 2
8. Nominal diameter of rotary table’s notch 　　　　　φ698.5mm(27'/2″)
Independent drive 1+1R stepless speed regulation
9. Derrick type & useful height 　　　　K-type 44m
10. Height of drill stand 　　　　　　　　 7.5m
Rotary beam clearance　　　　　　6.3m
11.Drive type　　　　　　　　　AC-DC-AC
12. Diesel engine
Quantity of generator X Power 2x1200KW
Model 　　　　　　　 CAT 3512B DITA
Speed 　　　　　　　 1500r/min
Frequency & Voltage of generator Three-phase, 50HZ, 600V
Frequency control 5+1
13．Assistant generator 1×400KW
Type of diesel engine VOLVO
Speed 1500r/min
Frequency & Voltage of generator Three-phase, 50HZ, 400V
14. Air pressure 　　　　　　　　 1MPa
15. Mud pressure pipeline (double stack) 　　 4″×35 MPa
16. Capacity of mud circulating system 　　　 240m