DR-106.NGT.7/8.30.М2

Description

PDM DR-106.NGT.7/8.30.М2 is a new universal hydraulic downhole motor used for:

• drilling of oil and gas wells with 120.6 – 149.2 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 1214 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	106/110
Power section lobe configuration	7/8
PDM length, mm	5 185
Length of stator rubber lining, mm	3 000
Length of bearing section up to a curvature point, mm	1 214
Diameter of bits used, mm	120,6-149,2
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	80
Weight, kg	267

 
Power specification

Working fluid flow rate, l/s	6-12
Output shaft rotation speed:
- in no-load conditions, RPM	96-192
Torque at maximum power, kN*m	2,3-3,5
Pressure drop:
- at maximum power, MPa	5-10
Power, kW	53

Outline drawing

Comparison
of specifications

Parameter

Technical specification:

Housing OD, mm

Power section lobe configuration

PDM length, mm

Length of stator rubber lining, mm

Length of bearing section up to a curvature point, mm

Diameter of bits used, mm

Connecting thread to drill pipes

Connecting thread to bits

Maximum density of drilling mud, g/cm3

Allowed axial load, kN

Weight, kg

Power specification:

Working fluid flow rate, l/s

Output shaft rotation speed:

- in no-load conditions, RPM

Torque at maximum power, kN*m

Pressure drop:

- at maximum power, MРa

Power, kW

DR-106.NGT.5/6.53.M1	DR-106.NGT.7/8.30.M1	DR-106.NGT.5/6.53.M2	DR-106.NGT.7/8.30.M2
105/110	106/110	105/110	106/110
5/6	7/8	5/6	7/8
7 154	4 854	7 485	5 185
5 320	3 000	5 320	3 000
883	883	1 214	1 214
120,6-149,2	120,6-149,2	120,6-149,2	120,6-149,2
З-86	З-86	З-86	З-86
З-76	З-76	З-76	З-76
1,6	1,6	1,6	1,6
80	80	80	80
369	250	386	267
6-12	6-12	6-12	6-12
161-321	96-192	161-321	96-192
3,25	2,3-3,5	3,25	2,3-3,5
8	5-10	8	5-10
99	53	99	53

Download

Description and specification of DR-106.NGT.7/8.30.М2 (0.3 MB, pdf)