Downhole Motor

Downhole Motor

Downhole Motor is a kind of downhole dynamic drilling tool driven by the power of drilling

mud. Mud stream from the outlet of a 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 on its property parameters.

Motor Assembly

Downhole motor rotor is manufactured from high quality alloy steel, while s-rotor is made

of rubber. High force and tearing strength of the rubber stator allows the tool to run in the

high temperatures (about 180 ℃ ) and high oil mud condition. All these benefits help to

maintain effective operation.

We produce the downhole motor with an external coating on the motor rotor that gives

the tool a much longer service life.

Cardan Shaft Assembly

The function of cardan shaft is to convert planetary motion into fixed constant rotation of

drive shaft, to transmit torque and speed from motor on the drive shaft and to the bit.

Drive Shaft Assembly

The driveshaft assembly converts the eccentric motion of the rotor into concentric rotation

for the bearing assembly. It also accommodates any angle set on the adjustable bent

housing (or fixed bend housing) and carries the thrust load from the rotor caused by the

pressure drop across the power section.

The drive shaft assembly are forged using superior alloy steel, it gives the shaft assembly

good strength and toughness and also greatly improve the anti-fatigue capacity during the

rotating movement, thus giving the downhole motor a much longer service life.