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TOP DRIVE SYSTEM

  The top drive system is compact to meet the installation requirements of truck-mounted drilling and workover rigs, skid-mounted land rigs and offshore drilling rigs.
 With good performance, it is especially applicable for drilling operations of directional wells and horizontal wells in order to save auxiliary drilling time and improve drilling efficiency.
 The AC variable frequency drive is adopted to realize stepless speed regulation, wide regulating range, simple and reliable drive, and simple and convenient installation, maintenance and operation.
 The key load-bearing parts are made of special materials and subjected to heat treatment to ensure mechanical integrity.
 

 

DQ250

DQ500

Nominal drilling range(ft)

5″ DP

10498.7

19685.0

41/2″DP

13123.4

22965.8

Max. hook load(Ibf)

505800

1011600

Max. torque of main shaft(ft-lb)

29502.4

36878.0

Max. break-out torque(ft-lb)

44253.6

55317.0

Speed range of main shaft (r/min)

0~180

0~220

Suitable mast height(ft)

108~141

148

Opening diameter of central pipe(in)

2.95

2.95

 
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