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