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Coal seam hole drilling straightness keeping and skewing preventing device

A technology for anti-deviation and coal seam, which is applied in the direction of drill pipes, drill pipes, drilling equipment, etc., can solve problems such as drilling deflection, and achieve the effects of ensuring safe production, reducing, and promoting the drilling offset distance

Pending Publication Date: 2019-12-31
HENAN POLYTECHNIC UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiencies in the prior art, the present invention provides a straightness and anti-deviation device for coal seam drilling, which can ensure the construction quality of drainage drilling during the drilling process and solve the ubiquitous problem of drilling deviation. Comprehensively improve the effect of gas drainage

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  • Coal seam hole drilling straightness keeping and skewing preventing device
  • Coal seam hole drilling straightness keeping and skewing preventing device

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Embodiment Construction

[0019] The present invention will be clearly described below in conjunction with the drawings and specific embodiments in the embodiments of the present invention. The description here is only used to explain the present invention, but not as a limitation to the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present invention Inside.

[0020] like Figure 1-2 As shown, the present invention provides a straightness and anti-slant device for coal seam drilling, including a drill bit 1, a straight anti-slant rod 2, a reverse drill bit 3 and a triangular connecting rod 4, and the straightness and anti-slant rod 2 passes through it The rod joint set at the head is connected with the drill bit 1, and connected with the triangular connecting rod 4 through the threaded ...

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Abstract

The invention discloses a coal seam hole drilling straightness keeping and skewing preventing device which comprises a drill bit, a straightness keeping and skewing preventing rod, a reverse drill bitand a trihedral connecting rod, wherein the straightness keeping and skewing preventing rod is connected with the drill bit through a rod connector arranged at the head of the straightness keeping and skewing preventing rod, and is connected with the trihedral connecting rod through a threaded hole formed in the tail part of the straightness keeping and skewing preventing rod; the reverse drill bit is arranged on the straightness keeping and skewing preventing rod and is positioned at the connecting end of the straightness keeping and skewing preventing rod and the trihedral connecting rod. The coal seam hole drilling straightness keeping and skewing preventing device has the advantages that the reliability is high; a drilling technology is favorably improved; the hole forming quality isimproved; the drill hole qualification rate is improved, so that the drill hole deviation distance decrease is promoted; a gas extraction blank zone is favorably reduced; the gas extraction effect isimproved; and the safe production of a mine is ensured.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety, and in particular relates to a straightness and anti-slant device for coal seam drilling. Background technique [0002] With the gradual deepening of coal seam mining depth in my country and the higher and higher requirements for safe production in mines, the development of gas drainage technology in China has entered the stage of intensified drainage of low-permeability coal seams. Drainage drilling is required for coal seam gas drainage. Gas drainage drilling is the fundamental guarantee for realizing gas drainage. The quality of drilling will play a key role in the effect of gas drainage. Drainage borehole keeping straight and anti-deviation technology is one of the key technologies for coal seam gas drainage, but the problem of deflection of gas drainage boreholes is common. During the drilling construction process, the drilling is greatly affected by the azimuth, inclination angle,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/10E21B17/04E21B17/22
CPCE21B7/10E21B17/04E21B17/22
Inventor 许彦鹏段志国王兆丰芦海广陈立伟李慧文樊阳洋栗海滔杨万里
Owner HENAN POLYTECHNIC UNIV
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