DR-195.NGT.6/7.43.М1

Description

PDM DR-195.NGT.6/7.43.М1 is a new universal hydraulic downhole motor used for drilling of oil and gas wells with rock and PDC bits of 215,9-269,9 mm diameter.

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°.

The bearing section has multi-row thrust ball bearing of enhanced load-carrying capacity and radial hard alloy bearings.

PDMs are completed with imported extended power sections with enhanced operation life. Due to very short shoulder up to the point of axes misalignment (only 1856 mm) the 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 Loctite 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.

PDMs can be completed with replaceable centralizer:

Centralizer

Technical and power
specifications

Technical specification

Housing OD, mm	195/197
Power section lobe configuration	6/7
PDM length, mm	7 601
Length of stator rubber lining, mm	4 250
Length of bearing section up to a curvature point, mm	1 856
Diameter of bits used, mm	212,7-250,8
Connecting thread to drill pipes	З-147
Connecting thread to bits	З-117
Maximum density of drilling mud, g/cm3	1,9
Allowed axial load, kN	250
Weight, kg	1 328

 
Power specification

Working fluid flow rate, l/s	20-53
Output shaft rotation speed:
- in no-load conditions, RPM	82-217
Torque at maximum power, kN*m	11,1
Pressure drop:
- at maximum power, MPa	5,6
Power, kW	226

Outline drawing

Comparison
of specifications

Parameter	DR-195.NGT.5/6.43.М1	DR-195.NGT.6/7.43.М1
Technical specification:
Housing OD, mm	195/197	195/197
Power section lobe configuration	5/6	6/7
PDM length, mm	7 601	7 601
Length of stator rubber lining, mm	4 250	4 250
Length of bearing section up to a curvature point, mm	1 856	1 856
Diameter of bits used, mm	212,7-250,8	212,7-250,8
Connecting thread to drill pipes	З-147	З-147
Connecting thread to bits	З-117	З-117
Maximum density of drilling mud, g/cm3	1,9	1,9
Allowed axial load, kN	250	250
Weight, kg	1 328	1 328
Power specification:
Working fluid flow rate, l/s	18,5-37	20-53
Output shaft rotation speed:
- in no-load conditions, RPM	79-158	82-217
Torque at maximum power, kN*m	8,9	11,1
Pressure drop:
- at maximum power, MРa	5,6	5,6
Power, kW	130	226

Download

Description and specification of DR-195.NGT.6/7.43.М1 (0.2 MB, pdf)