Major features:
Driving of RT and DW is independent, RT rev, torque and mud pump stroke can be adjusted separately as per drilling technology, which provides precondition and guarantee for drilling technology optimization and auto-bit-feeding realization.
RT and auto-bit-feeding both adopt AC VF all-digital auto control technique, which make the performance of the rig under drilling condition get close to digital-control electric VF rig; but its cost is much lower. Driller operates the touch screen to fulfill drilling operation through optimized drilling parameters, which will reduce labor intensity significantly and improve work efficiency. Display, restoration, regulation and control, remote management of major drilling parameters can be realized.
Main technical parameters:
1 |
Nominal drilling depth |
4000m （ 114mmDP ） |
10 |
Substructure type |
Block package type |
3200m （ 127mmDP ） |
2 |
Max hook load |
2250kN |
11 |
Substructure height and clear height under RT beam |
7.5m ， 6.3m |
3 |
Wire rope system of traveling system |
5×6 ， parallel |
12 |
Mast type and effective height |
K TYPE ， 43m |
4 |
DW rated power |
735kW （ 1000hp ） |
13 |
Transmission mode |
hydraulic transmission and chain paralleling ， AC-VFD-AC |
5 |
DW gear |
4 forward |
4 forward+ 2 reverse |
14 |
Quantity/power of main diesel engine |
3×810kW |
15 |
Quantity/power of auxiliary generator set |
3×400kW |
6 |
Diameter of drilling wire rope |
φ 32mm |
7 |
RT opening diameter |
698.5mm （ 27 1/2″ ） |
16 |
Quantity and power of VF motor |
1×600kW+1x45 kW |
8 |
RT gear |
One gear stepless speed regulation |
Two gears stepless speed regulation |
17 |
HP mud manifold |
φ 102mm （ bore diameter ） ×35MPa |
9 |
Quantity and power of drilling pump |
2× 1300 hp |
18 |
Effective mud volume of solid control system |
260m3 |
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