Principle of screw drilling tool slant
Screw drilling tool is a positive displacement positive displacement power conversion device that converts liquid pressure energy into mechanical energy. It is mainly composed of three parts: screw motor (stator and rotor) assembly, cardan shaft assembly and drive shaft assembly.

The mud pump output washing fluid into the screw motor, forming a certain pressure difference at the inlet and outlet of the motor, driving the motor rotor rotation, speed and torque through the cardigan shaft and drive shaft will be transferred to the drill bit, so as to achieve the purpose of rock crushing.

There are three main reasons why a screw drill can perform directional drilling:

1. When the screw drilling tool works, the drill bit rotates and breaks the rock, while the screw outer pipe and drill pipe column do not rotate;

Two, can be connected with different angles of orientation or adjustable bending outer pipe;

Three, can carry out inclination and azimuth measurement while drilling.