Ground composite L-shaped drilling well for gas control and gas control method

A drilling and ground technology, which is applied in the field of ground compound L-shaped drilling and gas treatment, can solve the problems of gas drainage effect and coal mining efficiency being difficult to balance, and achieve the effect of reducing gas gushing volume and improving safety.

Inactive Publication Date: 2015-05-06
DATONG COAL MINE GRP +3
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Problems solved by technology

[0005] The invention provides a ground compound L-shaped drilling and gas control method for gas control to overcome the need to coordinate coal mine mining and gas drainage, and the problem that it is difficult to balance the gas drainage effect and coal mining efficiency

Method used

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  • Ground composite L-shaped drilling well for gas control and gas control method
  • Ground composite L-shaped drilling well for gas control and gas control method
  • Ground composite L-shaped drilling well for gas control and gas control method

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Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0045] figure 1 The front view of Embodiment 1 of the ground compound L-shaped drilling for gas control provided by the present invention; figure 2 for figure 1 The top view of the ground compound L-shaped drilling well shown for gas control; image 3 for figure 1 Side view of the shown ground composite L-shaped well for gas control; Figure...

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Abstract

The invention provides a ground composite L-shaped drilling well for gas control and a gas control method. The ground composite L-shaped drilling well comprises a horizontal well section and an output well section, wherein the horizontal well section is positioned between a caving zone and a fissure zone above a first production layer, and comprises a first well passage, a second well passage and a third well passage, the first well passage is positioned above a goaf of the first production layer, the second well passage is positioned above a working surface of the first production layer, the third well passage is positioned above a to-be-produced mine body of the first production layer, the working surface is positioned at one side of the to-be-produced mine body, the goaf is positioned at one side, away from the to-be-produced mine body, of the working surface, the output well section comprises a first pipeline and a second pipeline, the second pipeline is positioned at the outer side of the first production layer, a first pipe opening of the first pipeline is communicated with a sixth opening end of the third well passage, and a fourth pipe opening of the second pipeline is connected with ground. The ground composite L-shaped drilling well is used for sucking and producing the gas enriched in the production area of the first production layer.

Description

technical field [0001] The embodiment of the present invention relates to safety production technology, in particular to a ground compound L-shaped drilling and a gas control method for gas control. Background technique [0002] With the increase of mining intensity in coal mines and the extension of new mines and generated mines to deep strata, the threat of gas to safe production is also increasing, and the work of gas control has attracted much attention and attention. [0003] Gas drainage is a gas control measure. The existing underground gas drainage technology requires drilling and excavating special gas drainage roadways in underground coal seams and setting up drainage pumping stations. [0004] This method requires unified coordination of coal mining and gas drainage, and it is difficult to balance the effects of gas drainage and coal mining efficiency. Contents of the invention [0005] The invention provides a ground compound L-shaped drilling and a gas contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F7/00E21B7/04E21B43/30
CPCE21F7/00E21B43/305
Inventor 袁亮于斌王立兵杨智文匡铁军王存权赵军刘冠学赵君金学玉张明王显军杨洋涂辉郝元伟柳炳俊宣宏斌孟凡龙李源田利军兰亦文景珂宁
Owner DATONG COAL MINE GRP
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