ZJ70D DC Electric Drilling Rig

• Parameters

Drilling rig modelZJ70/4500D
Nominal drilling depth, m114mm(4 1/2″) Drill pipe5000-7000
127mm(5″) Drill pipe4000-6000
Max. hook load, KN4500
Hook speed, m/ s0-1.44
Line strung of hoisting system12
Drill line diameter, mm38
Max. pull of fast line, KN487
DrawworksModelJC70D
Rated Power KW1470
Speed4
Main brakeHydraulic disc brake
Auxiliary brakeEddy or pneumatic air cooled disk brake
Crown blockTC450
Traveling blockYC450
Sheave OD of hoisting system, mm1524
HookDG450
SwivelModelSL450
Stem dia, Mm75
Rotary tableTable opening mm952.5
SpeedI or II, stepless speed regulation
Drive modelIndependent electric drive or compound drive
MastTypeK
Height, m45
Max. load, KN4500
Racking board height, m24.5, 25.5, 26.5
Sub-StructureTypeSwing lift or double-lift
Floor height, m9/10.5
Clear height, m7.6/9
Mud pumpModel × numberF-1600×3
Drive modeDC electric
High pressure manifoldФ103(bore dia.)×35MPa
Electric drive modeAC-SCR-DC, one for one or one for two
Main generator number and capacity4×1900KVA

• Features

  • • Adopting advanced AC-SCR-DC technology, realizing stepless speed regulation of drawworks, rotary table and mud pump for optimum drilling performance.

• Both   swing   lift  and  sling-shot   parallel-integrated substructures are optional. All parts on rig floor and mast can be installed on ground and raised with drawworks power.

• Main brake of drawworks can be hydraulic disc brake or band brake. Auxiliary brake of drawworks can be eddy current brake which is water cooling or air cooling or EATON pneumatic brake as the client’s requirements.

• Rotary table is driven by drawworks power through compound drive or by an independent motor.

• Independent driller cabin is on the user’s requirements. To realize intelligent control of pneumatic, electric, hydraulic and instrument system so that driller completes the total operations in the cabin for better working conditions and lessening working strength. Logic control, supervision and maintenance during complete drilling operations are available by PLC process. The drilling data can be stored printed and remote transmitted.

• Top drive drilling system can be equipped.