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Controllable shock wave anti-reflection and carbon dioxide displacement combined gas extraction method and equipment

A carbon dioxide and gas extraction technology, which is applied in mining equipment, gas emission, and mining fluids, etc., can solve the problems of difficult extraction of adsorbed gas.

Inactive Publication Date: 2021-09-14
华能煤炭技术研究有限公司
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Problems solved by technology

[0003] The first purpose of the present invention is to provide a controllable shock wave antireflection and carbon dioxide displacement combined gas drainage method to solve the technical problem that the gas in the adsorbed state is difficult to extract

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  • Controllable shock wave anti-reflection and carbon dioxide displacement combined gas extraction method and equipment

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Embodiment Construction

[0030] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] figure 1 A top view of the structure of the controllable shock wave anti-reflection and carbon dioxide displacement combined gas drainage equipment in working state provided for this embodiment. Such as figure 1 As shown, this embodiment provides a controllable shock wave anti-reflection and carbon dioxide displacement combined gas drainage equipment, which is used to realize the combined gas drainage method of controllable shock wave anti-reflection and carbon dioxide displacement.

[0032] The controllable shock wave antireflection and carbon dioxide displacement combined gas dr...

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Abstract

The invention provides a controllable shock wave anti-reflection and carbon dioxide displacement combined gas extraction method and equipment, relates to the technical field of gas extraction, and is designed for solving the problem that adsorbed gas is not easy to extract. The method comprises the following steps of Step 200, feeding a controllable shock wave generating device into an experimental drill hole of a coal body, connecting a carbon dioxide supply device to the experimental drill hole, and installing a hole sealing device at a hole opening of the experimental drill hole; Step 400, starting the controllable shock wave generating device, and impacting the coal wall by using impact waves; Step 600,connecting a gas extraction device to a conventional drill hole, and starting the gas extraction device; and Step 800, starting a carbon dioxide supply device, and injecting carbon dioxide into the experiment drill hole. The equipment is used for implementing the method. According to the invention, the gas in an adsorbed state in the coal body can be smoothly extracted.

Description

technical field [0001] The invention relates to the technical field of gas drainage, in particular to a gas drainage method and equipment combined with controllable shock wave antireflection and carbon dioxide displacement. Background technique [0002] Gas in coal seams mainly exists in two states: free state and adsorbed state. For soft and highly metamorphic coal seams, the permeability of the coal seam is poor, and the gas in the coal body mainly exists in the adsorbed state, so it is not easy to be extracted. Contents of the invention [0003] The first object of the present invention is to provide a gas drainage method combined with controllable shock wave anti-reflection and carbon dioxide displacement to solve the technical problem that the gas in the adsorbed state is difficult to extract. [0004] The controllable shock wave antireflection and carbon dioxide displacement combined gas drainage method provided by the present invention includes the following steps:...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B43/16E21B43/26E21B43/24E21F7/00
CPCE21B43/006E21B43/164E21B43/26E21B43/24E21F7/00
Inventor 张倍宁孙福龙孙晓虎王冰山栗磊高健勋沙兴峰马新根伏明徐浩杨阳乔力帆
Owner 华能煤炭技术研究有限公司
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