
Mr. Zhang Yu
Leave a messageMr. Zhang Yu
Leave a messageDownhole motor is composed of five assemblies: by-pass valve, motor, anti-drop, cardan shaft and drive shaft.
Downhole motor is a kind of downhole dynamic drilling tool upon the power of drilling mud. Mud stream from the
outlet of mud pup 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 ratating, and to transmit the torque and speed onto the bit. The downhole
motor property mainly depends upon its property parameters.