Flow division type jetting and suction hydraulic impactor

Abstract

The invention relates to a flow division type jetting and suction hydraulic impactor. The upper end of a pup joint of a case of the flow division type jetting and suction hydraulic impactor is connected with an upper connector, and the lower end is connected with a transmission pup joint; an upper spray nozzle seat, a hammer inner sleeve, a valve sleeve and an impact hammer are arranged in a cavity formed between the upper top of the transmission pup joint and the upper connector; the upper end of the hammer inner sleeve is fixedly connected with the upper spray nozzle seat; the upper spray nozzle is fixed in a center hole of the upper spray nozzle seat through a clamp spring; symmetrical liquid discharging holes are formed in an annular step of the hammer inner sleeve; hole passages on the periphery of the upper spray nozzle seat and the liquid discharging holes are in one-to-one correspondence to form liquid distribution flow passages; the lower end of the valve sleeve is provided with an overflow groove communicating the upper part and the lower part of the hammer inner sleeve; the valve sleeve is positioned at the upper part of the hammer inner sleeve; a piston is arranged inside the valve sleeve; the impact hammer and the piston form a piston impact hammer assembly through screw threads; the piston and the impact hammer are arranged on the same axial line; the upper top ofthe transmission pup joint is provided with a center hole; a lower spray nozzle is arranged in the center hole through a clamp spring. The dynamic impact device has the advantages that the stable periodic axial impact vibration can be generated; the impact frequency is high; the impact force is strong.

Description

technical field [0001] The invention relates to a high-efficiency rock-breaking tool in the oil drilling industry, in particular to a split-flow jet-suction hydraulic impactor. Background technique [0002] In order to meet the development needs of oil and gas exploration, the development trend of the drilling industry is to expand to deeper and more complex blocks. In the process of drilling deep wells, as the depth increases, the drillability of rocks decreases, the difficulty of drilling becomes greater, and the problem of slowing down the footage begins to emerge. Therefore, improving the drilling speed of deep wells and ultra-deep wells is a key focus of the current domestic and foreign oil industries. [0003] At present, various impactors are the main tools to increase the drilling speed. However, the existing impactors generally have problems such as too many parts, short working life, small single impact force, and low work efficiency. The widespread existence of...

AI Technical Summary

Problems solved by technology

[0004] An object of the present invention is to provide a split-flow jet-suction hydraulic impactor, which is used to solve the problems of the existing impactors with too short life and a single impact force too small

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