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Controllable shock wave anti-reflection and heat injection combined gas extraction method and equipment

A technology of gas drainage and shock wave, which is applied in the field of gas drainage combined with controllable shock wave anti-reflection and heat injection, can solve the problems such as difficult drainage 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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  • Application Information

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Problems solved by technology

[0003] The first object of the present invention is to provide a controllable shock wave antireflection and heat injection 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 heat injection 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 heat injection combined gas drainage equipment in working state provided for this embodiment. Such as figure 1 As shown, this embodiment provides a controllable shock wave antireflection and heat injection combined gas drainage equipment, which is used to realize the controllable shock wave antireflection and heat injection combined gas drainage method.

[0032] The gas drainage method combined with controllable shock wave antireflection and heat injection includes the following steps: S200: se...

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Abstract

The invention provides a controllable shock wave anti-reflection and heat injection 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 water injection device to the experimental drill hole, installing a heating device used for heating water flow injected into the experimental drill hole, and installing a hole sealing device at a hole opening of the experimental drill hole; Step 400, connecting a gas drainage pipeline to a conventional drill hole, and starting the gas drainage pipeline; Step 600, starting a controllable shock wave generating device, and impacting the coal wall by shock waves; and Step 800, starting the water injection device and the heating device, and continuously injecting hot water into the experiment drill hole. The equipment is used for implementing the method. According to the invention, the gas in an adsorption 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 heat injection. Background technique [0002] Gas in coal seams mainly exists in two states: free state and adsorbed state. For coal with a high degree of metamorphism, the permeability of the coal seam is poor, and the gas in the coal 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 heat injection to solve the technical problem that the gas in the adsorbed state is difficult to extract. [0004] The controllable shock wave antireflection and heat injection combined gas drainage method provided by the present invention includes the following steps: S200: sending the controllable shock wave ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B43/24E21B43/26E21B43/34E21B47/07E21F7/00
CPCE21B43/006E21B43/24E21B43/26E21B43/34E21B47/07E21F7/00
Inventor 张倍宁高健勋殷裁云汪义龙孙晓虎李永元刘杰王耀辉伏明郭晓琛马新根
Owner 华能煤炭技术研究有限公司
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