TECHNICAL FEATURES
Ø The max hook load is of 6750kN, AC-DC-AC electric drive technology is adopted and the PLC enables intelligent driller control;
Ø Mast effective height , 57.5m, is enough for drilling with quadruple stand;
Ø The front side of substructure is high and back side is low. The drawworks is fixed at low position on the back side and the drill floor is flat with larger operation area;
Ø The high speed and high power AC VFD motor of drawworks is specially designed and produced according to the special requirements of drilling operation. The main motor frequency converter is of one-to-two control mode which improves the dynamic response of motors;
Ø The 3000HP dual-shift VFD drive drawworks makes the rig operation more economic and the module design is easy for installation and transportation;
Ø The drawworks employs the modular design, meeting the large power drawworks installation and transportation requirements;
Ø Rotary table has one or two shifts with independent gear drive;
Ø The drilling rig uses Φ42mm high-strength steel wire rope, reducing weight of traveling and lifting system and improving the power efficiency of drilling rig;
Ø HL-type high-pressure (7,500 psi) mud pump is adopted.
TECHNICAL PARAMETER
|
Drill Model |
ZJ90/6750DB-S |
|
|
Nominal Drilling Depth, m |
127mm(5") Drill Pipe |
6000~9000 |
|
Max. Hook Load, kN (t) |
6750 (675) |
|
|
Hook Speed, m/s |
0～1.82 |
|
|
Line of Hoisting System |
14 |
|
|
Drilling Line Diameter mm(in) |
Φ42（1 5/8） |
|
|
Drawworks |
Type |
JC90DB |
|
Power (kW) |
2200 |
|
|
Shift |
2 |
|
|
Brake |
Hydraulic Disc Brake ( Dynamic Brake ) |
|
|
Swivel |
Model |
SL675 |
|
Stem Diameter，mm |
Φ102 |
|
|
Rotary Table |
Opening，mm |
Φ952.5 |
|
Shift |
Ⅰ or Ⅱ, Stepless |
|
|
Mast |
Type |
K |
|
Clear Height，m |
57.5 |
|
|
Max. Load, kN |
6750 |
|
|
Monkey Board Height，m |
34.5,35.5 |
|
|
Substructure |
Type |
Front level, swing lift |
|
Floor Height, m |
12 |
|
|
Clear Height, m |
10 |
|
|
Mud Pump |
Drive Mode |
AC VFD Drive |
|
最大泵压 Max Pump Pressure |
52MPa |
|
|
High-pressure Lines |
Φ103（通径 Bore Dia.）×70MPa |
|
|
Electric Drive Mode |
AC-DC-AC， One-to-One Control |
|
