DR-165.NGT.7/8.58.М1

Description

PDM DR-165.NGT.7/8.58.M1 is a new universal hydraulic downhole motor used for drilling of oil and gas wells with 190,5 – 250,8 mm rock and PDC bits.

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 multi-row thrust ball bearing of enhanced load-carrying capacity and radial hard alloy bearings. The PDM is completed with imported extended power sections with enhanced operation life.

Due to a very short shoulder up to the point of axes misalignment (only 1800 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 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.

Technical and power
specifications

Technical specification

Housing OD, mm	165
Power section lobe configuration	7/8
PDM length, mm	9 111
Length of stator rubber lining, mm	5 720
Length of bearing section up to a curvature point, mm	1 856
Diameter of bits used, mm	190,5-250,8
Connecting thread to drill pipes	З-133
Connecting thread to bits	З-117
Maximum density of drilling mud, g/cm3	1,9
Allowed axial load, kN	250
Weight, kg	1 138

 
Power specification

Working fluid flow rate, l/s	17-38
Output shaft rotation speed:
- in no-load conditions, RPM	71-160
Torque at maximum power, kN*m	10,9
Pressure drop:
- at maximum power, MPa	7
Power, kW	164

Outline drawing

Comparison
of specifications

Parameter	DR-165.NGT.7/8.58.М1	DR-165.NGT.7/8.69.М1
Technical specification:
Housing OD, mm	165	165
Power section lobe configuration	7/8	7/8
PDM length, mm	9 111	10 271
Length of stator rubber lining, mm	5 720	6 880
Length of bearing section up to a curvature point, mm	1 856	1 856
Diameter of bits used, mm	190,5-250,8	190,5-250,8
Connecting thread to drill pipes	З-133	З-133
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	1 138	1 283
Power specification:
Working fluid flow rate, l/s	17-38	17-38
Output shaft rotation speed:
- in no-load conditions, RPM	71-160	71-160
Torque at maximum power, kN*m	10,9	13,1
Pressure drop:
- at maximum power, MРa	7	7
Power, kW	164	197

Download

Description and specification of DR-165.NGT.7/8.58.М1 (0.3 MB, pdf)