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Coal mine underworkings-type coal-seam gas fracturing equipment

A technology for underground roadways and coal seam gas, which is applied in mining equipment, gas discharge, safety devices, etc., and can solve the problem of lack of effective technical means for gas threats

Inactive Publication Date: 2012-09-26
DAQING ZHONGYOU QINGRUI GASOLINEEUM SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a variety of drainage measures are taken, the drainage rate can only reach about 35% at present, and some are even lower. There is no effective technical means to fundamentally solve the gas threat

Method used

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  • Coal mine underworkings-type coal-seam gas fracturing equipment
  • Coal mine underworkings-type coal-seam gas fracturing equipment

Examples

Experimental program
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Effect test

Embodiment Construction

[0013] see figure 1 , the specific implementation method adopts the following technical scheme: it includes a liquid storage tank 1, a fracturing fluid mixing sand mixer 2, a control and monitoring device 3, a high-pressure fracturing pump 4, an underground coal body 5, and a high-pressure and low-pressure manifold 6; The underground coal body 5 is connected to one end of several high-pressure fracturing pumps 4 through a high-low pressure manifold 6, and the other end of several high-pressure fracturing pumps 4 is connected to a fracturing fluid mixing sand mixer 2 through a high-low pressure manifold 6, One end of the fracturing fluid mixing sand mixer 2 is connected to several liquid storage tanks 1 through high and low pressure manifolds 6 , and the lower end of the fracturing fluid mixing sand mixer 2 is connected to the control and monitoring device 3 .

[0014] The liquid storage tank 1 can connect and combine various liquid storage pipes through pipelines as required, ...

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Abstract

The invention relates to the field of coal mine acquisition technology and specifically relates to coal mine underworkings-type coal-seam gas fracturing equipment. An underground coal body (5) is connected with one end of each of a plurality of high pressure fracturing pumps (4) through high-low pressure manifolds (6); the other end of each of the plurality of the high pressure fracturing pumps (4) is connected with a fracturing-liquid mixing and proportioning mixer (2) through the high-low pressure manifolds (6); one end of the fracturing-liquid mixing and proportioning mixer (2) is connected with a plurality of liquid storage tanks (1) through the high-low pressure manifolds (6); and a lower end of the fracturing-liquid mixing and proportioning mixer(2) is connected with a control monitoring device(3). The coal mine underworkings-type coal-seam gas fracturing equipment is used for fracturing coal seams, can assist in improving coal seam permeability and can assist in reducing rock bursts of a coal body fracturing area and reducing risks of coal and gas outbursts and the rock bursts at a working face.

Description

Technical field: [0001] The invention relates to the technical field of coal mine collection, in particular to coal mine underground roadway coal seam gas fracturing equipment. Background technique: [0002] Coal is the main energy source and important raw material in our country, and has an important strategic position in the national economy. Coal accounts for about 76.4% and 69.5% of my country's primary energy production and consumption structure respectively, and the total coal consumption has been on the rise in recent years. Safe production is the primary task of the development of the coal industry, and gas control is the top priority of coal mine safety. The occurrence conditions of coal seams in my country are complex and changeable, and gas disasters (gas explosion, coal and gas outburst, etc.) accidents occur from time to time. Especially in the past ten years, the increase of mining depth has made the geological conditions of coal mines more complicated, which...

Claims

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Application Information

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IPC IPC(8): E21F7/00
Inventor 孙利尧许卫
Owner DAQING ZHONGYOU QINGRUI GASOLINEEUM SCI & TECH
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