A Simple Hydraulic Oscillation Tool

Abstract

The invention relates to a simple hydraulic oscillating tool, which comprises a current-limiting upper connecting cylinder, a current-limiting pusher, a protective inner cylinder, a linkage rod, a driving gear, a driven rack, a ring-wall disc spring, and a moving outer cylinder. , The lower connecting tube, the current limiting upper connecting tube protects the inner tube, and the lower connecting tube is connected in turn, the protection inner tube and its upper and lower partitions form a protection cavity; the moving outer tube surrounds the protection inner tube and falls freely on the lower connecting tube. On the annular step on the cylinder, the moving outer cylinder and the protective inner cylinder form an annular space, and the upper port of the moving outer cylinder is located under the annular step of the upper flow restrictor; The middle flow channel mouth is in contact and fit, the upper end of the link rod is hinged with the current limiting pusher, the lower end is fixedly connected with the driving gear, the driving gear is hinged with the protection inner cylinder, the driving gear protrudes from the bar hole and meshes with the driven rack; the driven gear The upper and lower parts of the strip are provided with ring wall disc springs. The invention can generate stable axial vibration, has high oscillation frequency and small vibration amplitude.

Description

technical field [0001] The invention relates to a drilling device applied in the field of petroleum engineering, in particular to a simple hydraulic oscillating tool. Background technique [0002] At present, the drilling of oilfields has developed from the initial vertical wells to directional wells and horizontal wells. Under the dual influence of the large displacement inclination and the gravity of the drilling tools, the conventional drilling tools are closely attached to the lower side well wall, resulting in friction during drilling. If it is too large, there will be many drilling problems, such as drill string support pressure, sticking, etc., which will seriously affect the drilling speed. In order to effectively reduce frictional resistance and reduce drilling accidents, oscillating tools are generally used to convert the static friction between the drilling tool and the well wall into dynamic friction, so as to reduce frictional resistance and improve drilling eff...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a simple hydraulic oscillation tool, this hydraulic oscillation system is used to solve the problems of complex structure and short service life in the current method of using hydraulic power to generate radial vibration

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