Equipment for oil and
gas industry

+7 (342) 238-61-01

54 Fominskaya str., Perm

DR-95.NGT.7/8.42.М1

Description

PDM DR-95.NGT.7/8.42.M1 is a new universal hydraulic downhole motor used for:

  • drilling of oil and gas wells with 112 – 132 mm bits,
  • well reconstruction by sidetracking with rock bits, PDC bits, including bicentric ones;
  • well workover operations.

An adjustable bent sub is placed between bearing section and power section. The adjustment range is between 0° and 2° or between 0° and 3°.

Bearing section has axial multi-row rolling bearing and radial hard alloy bearings. Due to a very short shoulder up to the point of axes misalignment (only 1139 mm) drillers can:

  • perform tripping without significant pressing of a bit to internal walls in the production string;
  • perform sidetracking of complex profile where it is required to alternate deviated intervals of more than 5°/10 m built rate and stabilization intervals with rotation of a drill string without the assembly tripping-out to replace the bend angle.
  • minimize risk of leaving the motor parts in the well, as all the threads are screwed applying 3M glue, and each motor is completed with safety sub.
  • do a large volume of work with one motor (it is especially important for hard-to-reach regions) as the overhaul life reaches approximately 200 hrs.
Technical and power
specifications

Technical specification

Housing OD, mm 95/98
Power section lobe configuration 7/8
PDM length, mm 6 285
Length of stator rubber lining, mm 4 180
Length of bearing section up to a curvature point, mm 1 139
Diameter of bits used, mm 112-132
Connecting thread to drill pipes З-86
Connecting thread to bits З-76
Maximum density of drilling mud, g/cm3 1,6
Allowed axial load, kN 55
Weight, kg 260

 
Power specification

Working fluid flow rate, l/s 5-10
Output shaft rotation speed:  
- in no-load conditions, RPM 126-257
Torque at maximum power, kN*m 2,46
Pressure drop:  
- at maximum power, MPa 5,36
Power, kW 60
Outline drawing

Comparison
of specifications
Parameter DR-95.NGT.7/8.42.М1 DR-95.NGT.7/8.53.М1
Technical specification:  
Housing OD, mm 95/98 95/98 
Power section lobe configuration 7/8  7/8
PDM length, mm 6 285 7 405 
Length of stator rubber lining, mm 4 180 5 300 
Length of bearing section up to a curvature point, mm 1 139 1 139 
Diameter of bits used, mm 112-132 112-132 
Connecting thread to drill pipes З-86 З-86 
Connecting thread to bits З-76 З-76 
Maximum density of drilling mud, g/cm3 1,6  1,6
Allowed axial load, kN 55 55 
Weight, kg 260 307 
Power specification:  
Working fluid flow rate, l/s 5-10 5-10
Output shaft rotation speed:    
- in no-load conditions, RPM 126-257 150-340
Torque at maximum power, kN*m 2,46 3,12
Pressure drop:    
- at maximum power, MРa 5,36 8,0
Power, kW 60 100

 

 

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