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Hydraulic drive percussion primary-secondary drilling bit

A kind of technology of mother-in-law drill bit and punching, which is applied in the direction of drill bit, drilling equipment, earthwork drilling and mining, etc. It can solve the problems of side tooth shedding service life, poor chip removal of hydraulic punching and rotating drill bit, and repeated crushing of cuttings, so as to prevent Effects of shedding, reduced chance of returning to the bottom, reduced size and intensity of eddies

Active Publication Date: 2013-08-28
CHANGZHOU XIAOGUO INFORMATION SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in order to solve the problems of poor chip removal, repeated crushing of cuttings, shedding of side teeth and short service life of the hydraulic percussion drill bit, the present invention provides a hydraulic percussion drill bit

Method used

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Embodiment Construction

[0021] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0022] Such as Figure 1-4 As shown, it is an embodiment of the hydraulic punching and spinning female bit of the present invention, which includes a bit body 1 and teeth arranged on the end face of the bit body 1. The end face of the bit body 1 is a step-separated type, and its orthographic projection is a three-piece type fan-shaped, the end face is divided into a central circular end face 1-1 and three fan-shaped end faces 1-2, the fan-shaped end faces 1-2 are evenly distributed on the outer ring of the central circular end face 1-1, The root of each leaf-shaped end surface 1-2 is provided with an arc-shaped chip removal groove 2, and the three arc-shaped ...

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Abstract

The invention relates to the technical field of underground power tools, particularly to a hydraulic drive percussion primary-secondary drilling bit. The hydraulic drive percussion primary-secondary drilling bit comprises a drilling bit body and teeth which are arranged on the end face of the drilling bit body; the end face of the drilling bit body is in a ladder separation type; an orthographic projection is in a three-plate fan blade type; the end face comprises the end face of a central circle which is in an integral structure and fan-blade-shaped three end faces; the fan-blade-shaped three end faces are uniformly distributed on an external ring of the end face of the central circle; an arc-shaped chip removal groove is formed in the root portion of every fan-blade-shaped end face; the three arc-shaped chip removal grooves are closely attached to the external ring of the end face of the central ring; three bidirectional arc chip removal grooves which are in mutual non-intersection are uniformly formed inside the end face of the central circle; the three bidirectional arc chip removal grooves are corresponding to the three arc-shaped chip removal grooves one to one; and arc-shaped openings of the bidirectional arc chip removal grooves are opposite to arc-shaped openings of the arc chip removal grooves. The hydraulic drive percussion primary-secondary drilling bit has the advantages of enabling rock debris to be convenient to enter into flow channels, enabling repeat crush to be avoided, reducing rate of the rock debris returning to the bottom of a well, preventing fall off of edge teeth and improving rock cleaning efficiency and service life.

Description

technical field [0001] The invention relates to the technical field of downhole power tools, in particular to a hydraulic percussion and spinner drill bit. Background technique [0002] Percussive drilling technology is a drilling method that combines percussion drilling and rotary drilling. Its principle is to add an impactor on the basis of ordinary rotary drilling. The impactor relies on high-pressure gas or drilling fluid to push its piston. The up and down movement hits the rotary drill bit at the lower end, and the rotary drill bit breaks the rock under the combined action of impact dynamic load and static pressure rotation. The percussion and rotary drilling technology has the advantages of fast drilling speed, low drilling cost, large cuttings, low drilling pressure and light well deviation when drilling hard formations. At present, the rotary drilling technology has been widely used in mining, quarrying, geological exploration, hydrological water wells, oil drillin...

Claims

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Application Information

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IPC IPC(8): E21B10/00E21B10/60
Inventor 吕苗荣刁建波陆健刘志成
Owner CHANGZHOU XIAOGUO INFORMATION SERVICES
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