Torsion generator for providing one-way impact

Abstract

The invention discloses a torsion generator for providing one-way impact, wherein the torsion generator is used for petroleum and gas well drilling and can convert pressure of mud into circumferential one-way impact of a driving shaft. According to the technical scheme, the torsion generator is mainly composed of an upper connector, an outer cylinder, a central shaft, a lower connector, a drill bit connector and the like; the upper connector, the outer cylinder, the lower connector and the drill bit connector are matched through threads and form a cavity inside after being fixed, and the cavity is sequentially provided with an anti-disengaging assembly, an inner cylinder, the central shaft, the driving shaft, a mass block, a universal shaft upper connector, a locking check ring, a universal shaft and a universal shaft lower connector from top to bottom; blades are arranged on the outer wall of the inner cylinder, and a screw stator is arranged on the inner wall of the inner cylinder; a screw rotor is arranged on the outer wall of the upper end of the central shaft, and an inner spline is arranged at the lower end of the central shaft; an outer spline is arranged at the upper end of the driving shaft, and the universal shaft upper connector is arranged at the lower end of the driving shaft. According to the torsion generator, the driving shaft is driven through drilling fluid to rotate so as to generate periodic circumferential one-way impact, and rock breaking efficiency of a drill bit is improved; stable circumferential vibration is generated, and the phenomenon that the drill bit is stuck and the stick slip phenomenon are effectively avoided.

Description

technical field [0001] The invention relates to a torsion generator for providing unidirectional impact in the drilling of oil, natural gas and coal gas layers. Background technique [0002] In recent years, as the country's demand for oil and natural gas has increased significantly, the development of oil and natural gas has also increased. However, during the drilling process, the drill bit often occurs sticking or stick-slip phenomenon. At this time, the drill string will undergo serious torsional deformation, which will make the drilling process extremely unstable, and even cause the drilling tool to fail. great harm. At present, in the drilling process, the various downhole tools used usually only provide axial impact, and cannot solve the stick-slip and stuck pipe phenomena that occur during the drilling process. [0003] If the tool is successfully used in the drilling process, since it can provide a periodic one-way impact in the circumferential direction, it will ...

AI Technical Summary

Problems solved by technology

However, during the drilling process, the drill bit often occurs sticking or stick-slip phenomenon. At this time, the drill string will undergo serious torsional deformation, which will make the drilling process extremely unstable, and even cause the drilling tool to fail. great harm

At present, in the drilling process, the various downhole tools used usually can only provide axial impact, and cannot solve the stick-slip and stuck pipe phenomena in the drilling process

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