Specification

High speed screw drilling rig mud motor for oil drilling

Mud motor is a part of screw drilling tools, which is a volumetric downhole power drilling tool that uses drilling fluid (mud) as a power source to convert liquid pressure energy into mechanical energy. It uses an internal power conversion mechanism to generate power through the flow of mud, thereby driving the drill bit to rotate and achieve drilling operations.

working principle

The working principle of a mud motor can be simply summarized as follows: when the mud pumped out by the mud pump flows through the mud motor, a certain pressure difference is formed at the inlet and outlet of the motor, which drives the rotor inside the motor to rotate around the axis of the stator. The rotor and stator mesh with each other to form a spiral sealed cavity, and energy conversion is achieved through the lead difference between the two. The rotational force of the rotor is transmitted to the drill bit through the universal shaft and transmission shaft, causing the drill bit to rotate and break the rock.

component

The mud motor is mainly composed of stator, rotor, universal joint, bearing assembly and other parts. Among them, the stator is made by injecting rubber lining on the inner wall of the steel pipe, and its inner hole has a specific geometric parameter spiral shape; The rotor is a screw with a hard layer that meshes with the stator.

advantage

High efficiency: Mud motors have high conversion efficiency, which can fully convert the hydraulic pressure of mud into the rotational power of drill bits, improving drilling efficiency.

Strong adaptability: Mud motors are suitable for various formations and drilling conditions, and can maintain good drilling performance in both soft and hard formations.

Compact structure: The structure design of the mud motor is compact, making it easy to install and maintain. At the same time, its internal components have strong wear resistance and corrosion resistance, which can adapt to harsh drilling environments.