High-gas coal bed group dip orientation drilling cluster and gas extracting method

A technology of gas drainage and directional drilling, which is applied to the layout of gas drainage drilling in high-gas coal seam groups and the field of gas drainage. Release and other issues, to achieve the effect of reducing gas concentration, efficient drainage, and eliminating threats

Inactive Publication Date: 2016-10-12
ANHUI UNIV OF SCI & TECH
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increase of coal mining intensity and mining scale, the degree of pressure relief of coal seams during the mining of high-gas coal seam groups has been increased, increasing the release of pressure relief gas from high-gas coal seams, and the pressure relief gas will flow along the rock formations. The cracks and cracks migrate and

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-gas coal bed group dip orientation drilling cluster and gas extracting method
  • High-gas coal bed group dip orientation drilling cluster and gas extracting method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] The present invention will be further described below in conjunction with the drawings, see Figure 1~2 :

[0013] 1) First, construct a set of drilling sites (9) in the transportation lane (4) and return air lane (6) of the working face (5) of the coal seam (11), and then construct a set of drilling sites (9) respectively in each drilling site (9) The construction roof tilts directional bendable drilling cluster (7) and the bottom plate tilts directional bendable drilling cluster (8). After the drilling is completed, the hole is sealed, and the gas drainage pipeline is installed in each hole, and then merged separately Gas drainage system pipelines of return air lane (6) and transportation lane (4) are used for gas drainage.

[0014] 2) The roof inclined directional bendable drilling cluster (7) and the bottom plate inclined directional bendable drilling cluster (8) constructed in each drill site (9) are composed of 4 inclined directional bendable drilling holes.

[0015] 3...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a high-gas coal seam group inclination directional drilling cluster and a gas extraction method, which mainly consists of a transport lane, an air return lane, an inclination directional bendable drilling cluster and a drilling field. It is characterized in that a group of drilling sites are respectively constructed in the transportation lane and the air return lane of the working face of the coal seam, and a cluster of roof inclined and oriented bendable drilling holes and a cluster of bottom plate inclined and oriented bendable drilled holes are respectively constructed in each drilling site. Each cluster of boreholes is composed of 4 inclination-oriented bendable boreholes. After the borehole construction is completed, the holes are sealed, and gas drainage pipelines are installed in each borehole, and then merged into the gas drainage of the return airway and the transportation roadway respectively. The system pipeline is used to drain the gas released from the coal seam. The invention has the characteristics of short construction time, easy construction, low construction cost and large extraction range, and can improve the extraction efficiency of pressure-relieving gas in high-gas coal seam groups, especially the extraction of gas in gas-enriched areas in fracture zones.

Description

technical field [0001] The invention relates to a gas drainage drilling arrangement method and a gas drainage method of a high gas coal seam group, in particular to a high gas coal seam group inclination directional drilling cluster and a gas drainage method. Background technique [0002] There are high gassy coal seam groups in many mining areas in my country, and gas disaster is one of the most difficult disasters faced in the mining process of high gassy coal seam groups. In recent years, gas disaster accidents account for the highest proportion of coal mine accidents, and the prevention and control of gas disaster accidents is the top priority of mine safety work in high gas coal seam groups. With the increase of coal mining intensity and mining scale, the degree of pressure relief of coal seams during the mining of high-gas coal seam groups has been increased, increasing the release of pressure relief gas from high-gas coal seams, and the pressure relief gas will flow a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21F7/00E21B43/30
CPCE21F7/00E21B43/305
Inventor 马海峰史文豹丁长栋庞冬冬王文龙程志恒张振立李晓民
Owner ANHUI UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap