Category : 
Mining Machinery

mud motor

Lake Petro

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Downhole motor /Mud Motor for oil well Drilling

A mud motor (or drilling motor,downhole motor) is a progressive cavity positive displacement pump (PCPD) placed in the drill string to provide additional power to the bit while drilling. The PCPD pump uses drilling fluid (commonly referred to as drilling mud, or just mud) to create eccentric motion in the power section of the motor which is transferred as concentric power to the drill bit (well). The mud motor uses different rotor and stator configurations to provide optimum performance for the desired drilling operation, typically increasing the number of lobes and length of power assembly for greater horsepower.


Main Features of downhole motor mud motor 

1) Increased rate of penetration.

2)Better hole deviation control. 

3) Reduction in drill string failure rate.

4)Reduction in wear and tear of the swivel, Kelly, and rotary drives.

5) Reduction in fuel cost, since compared to rotary drilling, less energy is required to power a downhole motor.

Specifications For Downhole  Motor 5LZ165x7.0V -4

General Info
Outer Diameter (OD)
165 mm
6 1/2 in
Bit Size Range
213-251 mm
8 3/8-9 7/8  in
Well hole Size Range
213-251 mm
6 3/4-8 3/4 in
Top connection 
4 1/2REG
Bit Conection 
4 1/2REG

Power Section and Perfomance
Lob configuration
Numbers of stages
Flow Rate
862-1724 lpm
Rotary Speed 
87-174  rpm

Standard Elastomer
Max Pressure Loss
4.52  Mpa
655 psi
Max Torgue
4878 N.m
3957 lb.ft
Power Output
 88 Kw
119 hp
Operational Pressure Loss 
3.2 Mpa
466 lb. ft
Operational Torgue 
3673  N.m
2709 lb.ft

Bearing Sub 
Operational Pressure
160 KN
Max Pressure 
80 KN
17600 lb



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