Downhole Motor is a kind of downhole dynamic drilling tool driven by the power of drilling mud. Mud steam from the outlet of a mud pump flows through a by-pass valve into the motor.

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 assembly 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. Tianhe Downhole motors come in sizes ranging from Φ43mm to Φ286mm.

→The drilling fluid input flow is proportional to the output speed of the downhole motor.

→The output torque of the downhole motor is linearly related to the pressure drop generated by the drilling fluid through the motor.

→ The rotary power of the downhole motor is used to drive the drill bit to reduce the wear of the drill pipe.

→The downhole motor has a faster rotation speed than rotary table drilling, which is beneficial to increase the mechanical rotation speed.

→It can be combined with rotary table for drilling to increase rotation speed and improve drilling efficiency.

→The bearing is welded with tungsten carbide, which has a longer service life.

→It can realize directional control of well depth trajectory, make it easier to control well direction, and reduce drilling deviation compared with rotary table drilling.