ZJ70D rig adopts advanced SCR drive technology, 4 units of 1310 kw diesel generator set as the main power, the 50 hz, 600 v alternating current (ac) after ark of SCR rectifier into a 0-750 - v dc, respectively, driving power for the winch, rotary table and mud pump series dc motor; Winch driven by two motor; Rotary table by 1 electric motor driven by independent; Three sets of mud pump driven by two motor. Winch main brake for the hydraulic disc brake, auxiliary brake for DSW70 water-cooled electromagnetic brake. Before shedding derrick, screw type or double l type base. Using the winch lifting power.
Technical parameters:
|
Model |
ZJ70D |
|
Nominal drilling depth |
5″drill pipe 4000～6000 m |
|
4 1/2″drill pipe 4500～7000 m |
|
|
Maximum hook load |
4500kN |
|
Winch maximum input power |
1400kW |
|
Spotting hoist gears |
4+4R continuously variable transmission |
|
Mud pump model and total power |
F-1600；3×1180kW |
|
Rotary table model and opening diameter |
ZP375； 952.5mm |
|
Diesel generating set and output power |
4×1310kW |
|
Motor power and set |
DC motor 800kW×7 |