Hydraulic pulse oscillation device

Abstract

The invention relates to a hydraulic pulse oscillation device. The device comprises an upper joint, a rotating main shaft, a cylindrical cam mechanism, a circular flow channel, an inner cylinder, a motion outer shell, a wall-surrounding spring, a moving cylinder and a lower joint; the upper joint, the inner cylinder and the lower joint are sequentially connected to form a central cavity; the rotating main shaft, the cylindrical cam mechanism and the circular flow channel are located in the central cavity; the cylindrical cam mechanism is formed by connecting a cylindrical groove with a movingrod through a sliding roller and a cam pin; the lower end of the rotating main shaft is connected with the cylindrical groove; the sliding roller is located in a guide rail of the cylindrical groove;the circular flow channel is arranged in the lower connector, located below the moving rod and further provided with small flow channels evenly distributed outside a middle flow channel; the lower parts of the small flow channels all communicate with the middle flow channel; the motion outer shell sleeves an annular outer groove in the inner cylinder; and the moving cylinder is located below the wall-surrounding spring, is in contact fit with the wall-surrounding spring and is located between the motion outer shell and the inner cylinder. Stable axial vibration can be generated, the oscillation frequency is high, and the vibration amplitude is small.

Description

technical field [0001] The invention relates to a drilling device used in the fields of petroleum engineering, mining engineering, geotechnical engineering and the like, and specifically relates to a hydraulic pulse oscillation device. Background technique [0002] In order to meet the needs of the development of oil and gas exploration, contemporary oil drilling is mainly extended to deep and complex blocks. With the development of major oilfields, more and more wells with complex structures such as highly deviated wells, horizontal wells and multi-branch horizontal wells are used. The frictional resistance between the column and the borehole wall is increasing, resulting in low drilling weight transmission efficiency, which seriously restricts the drilling speed and extension ability. In the process of deep well drilling, the problems of difficult drilling in hard formations and slow drilling speed are very prominent. In order to meet the needs of new drilling conditions...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a hydraulic pulse oscillation device, which is used to solve the problems of the excessively large hydraulic pressure drop, mechanical friction and eddy current loss caused by the turbine drive eccentric method, and the problem of limited vibration impact momentum of the screw. The motor method is difficult and expensive to process

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