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Method of plugging high-pressure borehole water gushing in the fractured zone of downhole

A technology for broken zones and faults, applied in drilling equipment and methods, drainage, directional drilling, etc., can solve the problems of poor drainage effect, high operation risk, poor grouting effect, etc., to improve construction efficiency, ensure construction safety, The effect of reducing construction risk

Active Publication Date: 2022-07-22
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for plugging water gushing in high-pressure boreholes in downhole fault fracture zones, using downhole directional drilling technology to block water gushing in high-pressure boreholes in fault fracture zones, which can effectively solve the current method for plugging boreholes in broken and high-pressure water gushing underground The problems caused by large amount of engineering, long construction period, high operation risk, poor drainage effect and poor grouting effect

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  • Method of plugging high-pressure borehole water gushing in the fractured zone of downhole
  • Method of plugging high-pressure borehole water gushing in the fractured zone of downhole

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[0043] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0044] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and or "including" are used in this specification, they indicate the presence of features, steps, operations, and or combinations thereof.

[0045] The present invention will be described in detail below with reference to the accompanying drawings and spec...

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Abstract

A method for plugging water gushing in a high-pressure borehole in a fractured zone of a downhole. The downhole directional drilling technology is used to block the gushing of water in a high-pressure borehole in the fractured zone of a fault. At the same time, choosing a safe area to construct long-distance directional drainage holes can avoid the intubation drainage and grouting method operators being exposed to high water pressure and broken surrounding rock construction areas, and effectively reduce the construction risks of operators. The hole layout method of the present invention comprehensively considers Reinforcement of surrounding rock mass and drainage of water-gushing boreholes are adopted. At the same time, the high drilling efficiency and precise drilling control of downhole directional drilling technology are used, which effectively overcomes the complicated drilling and grouting engineering procedures of conventional reinforcement hole construction, long construction period and drilling. The disadvantage of the large number of holes.

Description

technical field [0001] The invention relates to a water gushing plugging technology for underground boreholes, belongs to the technical field of water prevention and control in coal mines and protection of groundwater resources, and in particular relates to a method for plugging high-pressure borehole water gushing in an underground fault fracture zone. Background technique [0002] Water gushing from underground boreholes is a major type of water hazard in coal mines. For the types of water hazard in underground boreholes, the commonly used plugging and control techniques include grouting with built-up retaining walls, static pressure grouting, and drainage grouting. The treatment methods have their own advantages and disadvantages: the grouting method of building a retaining wall is characterized by safety and reliability, but it needs to block the roadway, which requires a large amount of engineering and a long construction period; To press and break the surrounding rock,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/13E21F16/02E21B7/04E21B43/30
CPCE21B33/13E21F16/02E21B7/046E21B43/305
Inventor 薛建坤王皓赵春虎杨建尚宏波孙洁董兴玲王强民
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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