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Carbon dioxide phase-change coal seam cracking guiding perforating device and outburst-preventing and scour-preventing method

A technology of carbon dioxide and phase change, applied in safety devices, earthwork drilling, gas discharge, etc., can solve problems such as limited communication of fracturing channels, achieve increased fracturing area, good fracturing effect, and increased permeability Effect

Inactive Publication Date: 2016-08-24
CCTEG SHENYANG RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the fracturing only relies on the gas itself and only involves single-hole fracturing, the communication of the fracturing channel is limited

Method used

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  • Carbon dioxide phase-change coal seam cracking guiding perforating device and outburst-preventing and scour-preventing method
  • Carbon dioxide phase-change coal seam cracking guiding perforating device and outburst-preventing and scour-preventing method

Examples

Experimental program
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Effect test

Embodiment 1

[0018] see figure 1 , a carbon dioxide phase change coal seam fracturing guide perforation device, including a carbon dioxide phase change coal seam cracker, characterized in that: a perforating charge 27 is placed in the explosion vent hole 3 of the carbon dioxide phase change coal seam cracker, and the explosion vent hole is plugged Head 29 blocked.

[0019] Wherein: the perforating charge 27 is placed in the explosion venting hole 3 and sealed with packaging material 28, and the plug 29 for the blast venting hole is made of plastic material.

[0020] Wherein: the packaging material 28 is yellow clay, and the perforating charge 27 is porous ceramsite.

Embodiment 2

[0022] see figure 1 , a carbon dioxide phase change coal seam fracturing guide perforation device, including a carbon dioxide phase change coal seam cracker, characterized in that: a perforating charge 27 is placed in the explosion vent hole 3 of the carbon dioxide phase change coal seam cracker, and the explosion vent hole is plugged Head 29 blocked.

[0023] Wherein: the perforating charge 27 is placed in the explosion venting hole 3 and sealed with packaging material 28, and the plug 29 for the blast venting hole is made of plastic material.

[0024] Wherein: the packaging material 28 is resin, and the perforating charge 27 is porous ceramsite.

Embodiment 3

[0026] see figure 2 , a method of anti-outburst and anti-shock, including ① starting at the same height of 1 meter at the head of the excavation working face 10, drilling a group of fan-shaped drilling holes at an equidistant distance of 0.5 meters on the roof of the parallel coal seam, consisting of blast holes and control holes, each blast hole Both sides are control holes, the specific order is control hole one 4, blast hole one 1, control hole two 5, control hole three 6, blast hole two 2, control hole four 7, control hole five 8, blast hole three 30, control hole three Hole six 9, ② Put a carbon dioxide phase change coal seam fracturing guide perforation device into all blast holes, including blast hole one 1, blast hole two 2, blast hole three 30, and the carbon dioxide phase change coal seam in blast hole one 1 The two explosion venting holes 3 of the fracturing-guiding perforation device are respectively aligned with the control hole 1 4 and the control hole 2 5, and ...

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Abstract

The invention relates to a carbon dioxide phase-change coal seam cracking guiding perforating device and an outburst-preventing and scour-preventing method. The carbon dioxide phase-change coal seam cracking guiding perforating device comprises a carbon dioxide phase-change coal seam cracking instrument and is characterized in that a perforating bullet is arranged in an explosion venting hole of the carbon dioxide phase-change coal seam cracking instrument and the explosion venting hole is plugged by a plug. The invention also provides the outburst-preventing and scour-preventing method. The device combined with the outburst-preventing and scour-preventing method provided by the invention is used for guiding the high energy gas through a perforating bullet track, so that the cracking effect is better; the orientation arrangement is adopted, so that the permeability is added to the perforating bullet track; the blast hole and the control hole are arranged, so that the cracks surrounding the blast hole and the control hole are more effectively communicated with each other; the cracking area is increased due to the fan-shaped arrangement.

Description

technical field [0001] The invention relates to a device and method for preventing and controlling coal and gas outburst and rock burst in coal mines, in particular to a carbon dioxide phase change coal seam fracturing and guiding perforation device and an anti-outburst and anti-collision method. Background technique [0002] At present, the domestic composite fractured perforation technology is mainly used in the petroleum field. Generally, a built-in composite perforator is used to generate high-energy gas through the combustion of gunpowder as a booster, injecting metal media into oil and gas reservoirs to increase rock mass fractures. , the process is to hang several sections of caseless bullets under the conventional perforating gun body, and ignite the caseless bullets while perforating, so that the perforation and fracturing can be completed at one time. It is composed of powder column and detonation system inside the powder column. [0003] Recently, American Oryx E...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/116E21B43/263E21F7/00
CPCE21B43/116E21B43/263E21F7/00
Inventor 王海东令狐建设张兴华王冬平赵长春王在胜李淑敏吴琼雷云梁忠秋孙亮王军刘丽丽
Owner CCTEG SHENYANG RES INST
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