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  Position: Home Products  > Petroleum drilling machine


Brief  Description

ZJ40/2250D can apply to gas and oil well exploration for 2000-3200m depthe with diameter 127mm dirll pipe ,2500-4000m with 114mm drill pipe.

1)The power system is composed of 3 sets of 760KW diesel engines. It is driven by means of AC-SCR-DC with full-digital controlled DC speed governor. The operating and monitoring system adopts the bus technology and the AC power interface is kept for installation of top  drive.

2)The draw works is driven by 1 set of 800KV positive-pressure and explosion-proof DC motor with four-shift step less speed governor. The main brake is the hydraulic disc brake and the auxiliary brake is the eddy current brake. It is equipped with the sand drum and 45KW emergency motor.

3) It is a swing-up design and can be installed at a lower position and wholly raised to proper position. The mast and substructure can be smoothly raised without changing the raising line. The driller cabin can centrally control the drilling job with convenient ,safe and reliable operation.

Main Technical Parameters 


13,100 ft4000m,4-1/2” DP

Max. hook load

505,820 lbs(2250 KN)

Max. DP weight

292,300 lbs(1,300 KN)

Rated horse power of draw works

1000HP (735KW)

Draw works hoisting speed

4+2R step-less change

Main brake

Hydraulic disc brake

Auxiliary brake

Electromagnetic eddy current brake

Diameter of drilling line


Hoisting lines


Hoisting pulley O.D.

44 in(1120mm)

Capacity of mud pump X Qty


Opening Dia. Of rotary table


Steps of rotary table


Mast height /type


Substructure type

Box on box

Drill floor height

24.6ft (7.5m)

Substructure clear height

6.12 (20ft)

Electric drive type


Diesel engine Qty X Main power


Auxiliary generator capacity X Qty


Power factor

0.8  No Brush Excite




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