High Flow Rate Downhole Motor

The adoption of hollow and different sizes of harden alloy jet nozzle can increase the incoming flow rate and the power of the drill bit. High flow rate downhole motor is common used in drilling works, because high flow of mud downhole motor and high horsepower downhole motor can easily drill rock stratum. Therefore, high mud flow downhole motors ensure the long service life.

Principle: Downhole motor is a kind of downhole dynamic drilling tool upon the power of drilling mud. Mud stream from the outlet of mud pump flows through a by-pass valve into the

motor. This stream produces pressure loss at both inlet and outlet of the pump to push the rotor into rotating, and to transmit the torque and speed onto the bit. The downhole motor

property mainly depends upon its property parameters.

Constitution: Downhole motor is composed of five assemblies: by-pass valve, motor, anti-drop, cardan shaft and drive shaft.

The down-hole motor is a positive-displacement down-hole motor. It converts the high pressure fluid power of the mud into the mechanical energy of drill bit rotation. The motor is

widely used in the drilling, making inclination, adjusting azimuth, coring, reaming, side tracking and work over for the directional wells, horizontal wells side tracked wells and straight

wells of oilfields and coal mines. In addition, it is suitable for compound drilling and traversing and other special works.