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ZJ70/4500D

ZJ70/4500D rig is drived with 4 sets of CAT3512 diesel generating sets. 0750V DC transduced from 50Hz AC by SCR system drive the YZ08/YZ08A DC motors connected with 2000hp drawworks and mud pump. Drawworks is drived with 2 sets of motors, 2 sets of mud pumps are drived with 2 sets of motors separately. The front open mast and the helicospiral substructure are raised and dropped by drawworks, the main brake of which is hydraulic disc brake, the auxiliary brake is electromagnetic eddy current brake.

Features:

1.      Adopts one time raising type, substructure, mast and all equipments are installed at low position, and raise the mast and substructure by the power from the winch.

2.      It can satisfy the requirement for explosion-proof, safety, drilling engineering and equipment installation, dismantling and easy maintenance requirements.

Specifications
Nominal drilling depth
114mm DP
3500~5000 m
 
Open diameter of rotary table
φ952.5mm (37.5” )
127mm DP
2800~4500 m
Qty.× power of diesel engine
2×1310kW
Max.hook load
3150kN (315tf)
Shift of drawwork
1 forward+1 reverse stepless speed
Traveling system
6×7
Height of drilling floor
9m
Dia of wireline
φ35mm
Mast model and height
K Type 44.5m
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