Downhole motor is a a kind of downhole dynamic drilling tool upon the power of drilling mud (or compressed gases) ,which is a kind of positive-displacement motor. Downhole motor is widely used in construction operations in the oil fields, geology, coal, salt water wells and other industries. Dynamic medium enters the motor of the screw drill from the drill string to form a certain differential pressure at both ends of the motor to propel the motor rotor for rotation and pass the torque and speed to the bit through the cardan shaft.

Window sidetracking technology apply to casing damaged well、stoping production well、abandoned well, It can improve oilfield acquisition efficiency and reduce cost.

Technical features: small radius of deflecting curvature, wide range of lateral well diameter, horizontal well section length, controllable azimuth, stable well deviation, main hole penetration, multi-layer or single-layer separate control, and branch hole re-entry.