One-way impacter based on turbine and spring

Abstract

The invention provides a one-way impacter based on a turbine and a spring. The one-way impacter is composed of an upper joint, a turbine assembly, a transmission assembly, a conversion joint, an impact assembly and a lower joint. The upper portion of the upper joint is connected with a drill pipe, and the lower portion of the upper joint is connected with a transmission shell, the conversion jointand the lower joint in sequence. The lower portion of the lower joint is connected with a drill bit, and turbine rotors generate a high-speed rotary motion under the impact effect of drilling fluid to sequentially drive a turbine shaft, a transmission shaft, a hammer body fixed cavity and an impact hammer to rotate. The impact hammer rotates and collides with the lower joint to generate impact torsional vibration. According to the one-way impacter based on the turbine and the spring, the impact hammer is symmetrically placed about the axis of the hammer body fixed cavity, and one time of rotation of the impact hammer can provide two times of torsional vibration impact effects, and the impact hammer continuously generates periodic circumferential collisions with the lower joint under the action of the spring force. The rotation and impact which are generated by the one-way impacter are transmitted to the drill bit through the lower joint, so that the drill bit generates high-frequencyone-way circumferential vibration, the occurrence of sticking of the drill bit and stick-slip is further avoided effectively, and the drilling efficiency is improved.

Description

technical field [0001] The invention relates to a one-way impactor based on a turbine and a spring, which is used in the fields of petroleum and natural gas shale gas drilling, mining, geological drilling and the like. Background technique [0002] In recent years, with the country's increasing demand for oil and natural gas, the exploitation of shale gas is also a hot spot and a challenge. Because during the drilling process, due to the driller’s technical and experience problems, the driller’s technical and experience problems often cause the drill to be sent too late or too fast, or because of the friction of the well wall, the drilling pressure applied to the drill bit is unstable, which affects the rock breaking efficiency. It is even possible to damage the drill bit, crack the cutting teeth of the drill bit, etc. due to the sudden increase of the drilling pressure, which will affect the drilling speed. On the other hand, when the PDC drill bit is drilling hard or abra...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a one-way impactor based on a turbine and a spring in order to solve the problems of drill bit sticking and stick-slip of the drill string during the drilling process, resulting in failure of the drilling tool and low ROP. Overcome the defects of the existing technology and increase the drilling speed

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