ZJ70/4500DZ Drilling Rig

Features
1. The rig adopts DC electric drive mode. From the 4 sets CAT3512B diesel generator power, the inverter drive cabinet after rectifying into 0-750V (adjustable) DC drive drawworks, mud pump, rotary motor, stepless speed regulation.
2.The rig adopts open front derricks, low installation, integral lifting.
3. The base for singleshot structure, all equipment installed on mesa low power integrated hoisting winch.
4.Four shaft hoist winch. Powered by two 750V, 800KW DC motor, the main brake using hydraulic disc brake, brake disc with double water-cooled disc. The auxiliary brake adopts water cooling electromagnetic eddy current brake. Winch configuration overwind valve type and hammer type anti-collision device.
5. A rotary table 1 750V, 800KW DC motor driven by flip chain box, universal shaft driving.
6, Every mud pump with 2 750V, 800KW DC motor driven by the joint group of narrow V. The continuous and steady change stepless speed regulation of DC motor can be realized and the displacement of the pump.
7.Using 5 class drilling mud purification system, it can be very well to remove harmful solid mud in the mud to purify.
产品参数
Model ZJ70/4500DZ
Nominal drillling depth 5″DP 6000m(19,685ft)
4 1/2″DP 7000m(22,965ft)
Max hook load 4500KN
Derrick type and effective height "K"type 45.5 m(149ft)
Rated power of drawwork 1470KW(2000HP)
Max fast line load                       485kN
Travelling system 7×6
Structure of travelling system 12
Rope diameter φ38 (1-1/2")
Norminal diameter of rotary table 37 1/2²
Mud pump power and quantity                        1600HP×3
Rate work pressure 5000Psi(35MPa)
Drillfloor height             10.5m
Power transmission mode                       AC-SCR-DC
Engine type and quantiy                     CAT3512B×4
Engine power                    1310kw(1781hp)