Piston regulated hydraulic impactor

Abstract

The invention relates to a hydraulic impactor regulated by a piston. The upper end of the shell of the hydraulic impactor regulated by the piston is threadedly connected to the upper conversion joint, and the lower end of the housing is provided with an anvil, and the lower end of the anvil is a lower conversion joint; The body is fastened in the shell, there is an upper spacer sleeve and an upper valve seat between the upper conversion joint and the cylinder body, the valve cover is installed in the upper valve seat, there are flow channels around the valve cover, the valve cover and the cylinder body form a valve chamber, The impact hammer extends into the valve chamber through the cylinder body, the bottom of the impact hammer contacts the casing, a low-pressure chamber is formed between the impact hammer and the cylinder body, the casing has a low-pressure hole, and the low-pressure hole connects the low-pressure chamber with the annular space; the impact hammer There is a cylinder at the upper end, and the first piston bottom plate is located in the cylinder; there is a valve cylinder at the upper end of the anvil, and the second piston bottom plate is located in the valve cylinder, and the second piston top plate is a free end. There is a piston groove at the bottom of the impact hammer, and the impact hammer is connected to the anvil. , the second piston top plate is located in the piston groove. The invention solves the problem of poor impact effect of the existing hydraulic impactor.

Description

technical field [0001] The invention is applied to the fields of petroleum engineering, mining engineering, geotechnical engineering, etc., and is a hammer that uses fluid to generate power. It is used in combination with rotary drilling equipment to exert impact on a drill bit, and specifically relates to a hydraulic hammer regulated by a piston. Background technique [0002] With the rapid development of my country's national economy, the country's demand for oil and gas resources is increasing year by year. The intensity of oil and gas exploration continues to increase, and the difficulty of mining is increasing. The mining layer changes from shallow layer to deep layer and ultra-deep layer. The drilling speed is severely restricted, so it is urgent to increase the drilling speed. At present, impactors are used to impact the drill bit to increase the drilling speed, which is widely used in the drilling process. During rotary percussion drilling, it has been achieved th...

AI Technical Summary

Problems solved by technology

[0003] An object of the present invention is to provide a hydraulic impactor regulated by a piston, which is used to solve the problem of poor impact effect of existing hydraulic impactors

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