LZ197 Down-hole Motor

Working principle of LZ197 Down-hole Motor

Down-hole Motor is a type of positive displacement motor that uses various drilling fluids such as oil-based mud, emulsified mud, and clay mud as power fluids. When it works, high-pressure drilling fluid enters the chamber between the stator and rotor of the screw drilling tool, pushing the rotor to rotate. The rotor then drives the main shaft and drill bit to rotate, thereby converting hydraulic energy into mechanical energy and achieving drill bit drilling.

Characteristics of LZ197 Down-hole Motor

1. Stable power output: It can provide relatively stable torque and speed under different downhole conditions, ensuring efficient drilling operations.

2. Adapt to various geological formations: By selecting different parameters such as the number of motor heads and bending angles, it is possible to adapt to various geological conditions ranging from soft to hard.

3. Good directional performance: Especially for curved screw drilling tools and adjustable angle screw drilling tools, they can accurately control the wellbore trajectory, meet the requirements of directional drilling and horizontal drilling, effectively reduce the torque of composite drilling in the horizontal section, and improve the safety factor of underground construction.

4. Can be paired with multiple types of drill bits: Suitable for selecting various types of drill bits, such as roller bits, PDC bits, etc., suitable drill bits can be selected according to different formation characteristics and drilling requirements to improve drilling efficiency.

Selection criteria of LZ197 Down-hole Motor

1. Requirements for wellbore type and inclination angle: For wellbore types such as directional wells and horizontal wells that require strict control of wellbore trajectory, curved screw drilling tools or adjustable angle screw drilling tools are usually selected, and the degree and other parameters of the curved shell are determined based on the designed inclination angle to meet the requirements of wellbore trajectory control.

2. Stratigraphic characteristics: Different parameters of screw drilling tools should be selected for different geological characteristics. In softer formations, down-hole motors with fewer heads can be used to improve mechanical drilling speed by utilizing their high-speed characteristics; In harder formations, it is necessary to choose multi head down-hole motors to provide sufficient torque.

3. Drilling fluid performance: Although down-hole motors are suitable for various types and densities of drilling fluids, they generally require drilling fluids with a sand content of less than 0.5% and good lubricity to reduce wear on the drilling tools and extend their service life.

Technical parameters of LZ197 Down-hole Motor