Combined type through hydraulic down-the-hole hammer

Abstract

The invention discloses a combined type through hydraulic down-the-hole hammer. The combined type through hydraulic down-the-hole hammer comprises an outer pipe, wherein the bottom end of the outer pipe is connected with a power transmission shaft; a core pipe is arranged in the outer pipe; the bottom end of the core pipe is connected with the power transmission shaft; the interior of the core pipe is communicated with the interior of the power transmission shaft; the outer side of the core pipe is sleeved with an upper nozzle, an upper valve and a punch hammer assembly; a first annular nozzleis formed between the upper nozzle and the core pipe; an upper valve moving cavity is formed below the upper nozzle, the upper valve is arranged in the upper valve moving cavity, and the upper valvecan slide up and down in the upper valve moving cavity; the punch hammer assembly comprises an upper piston, a lower piston and a punch hammer body, the upper piston, the lower piston and the punch hammer body are all connected to the outer side of the core pipe in a sleeving mode, the upper piston and the lower piston are arranged at the upper end and the lower end of the punch hammer body respectively, the punch hammer body is connected to the outer side of the upper piston and the outer side of the lower piston in a sleeving mode, and the punch hammer assembly can slide in the axis direction relative to the inner side wall of the outer pipe; a second annular nozzle is formed between the bottom end of the upper piston and the core pipe, a first bypass opening is formed in the side face of the punch hammer body, and the first bypass opening is communicated with the second annular nozzle.

Description

technical field [0001] The invention relates to the field of geological exploration, in particular to a composite penetrating hydraulic down-the-hole hammer. Background technique [0002] Coring drilling is often required in the fields of scientific drilling, oil and gas exploration, new energy exploration and development, etc. The conventional lifting and core drilling process requires a lot of auxiliary work for tripping and tripping, and the labor intensity of operators is high. Construction efficiency Low. The use of hydraulic hammer technology in oil and gas exploration and development drilling can greatly improve drilling efficiency and drilling quality. The combination of advanced technology can greatly improve the efficiency of core drilling. Contents of the invention [0003] The object of the present invention is to solve the above problems and provide a composite through-hole hydraulic down-the-hole hammer that greatly improves the working efficiency of core d...

AI Technical Summary

Problems solved by technology

[0002] Coring drilling is often required in the fields of scientific drilling, oil and gas exploration, new energy exploration and development, etc. The conventional lifting and core drilling process requires a lot of auxiliary work for tripping and tripping, and the labor intensity of operators is high. Construction efficiency Low

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