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Gas-injection coal seam gas displacement physical similarity simulation experiment table

A technology of physical similarity simulation and coal seam gas, which is applied in the field of gas injection flooding coal seam gas physical similarity simulation test bench, which can solve the problems of lack of test bench and difficult continuous monitoring.

Inactive Publication Date: 2015-04-01
马新足
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, in the research of this technology, it is difficult to realize continuous monitoring in field tests, and there is a lack of relevant test benches for laboratory experiments.

Method used

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  • Gas-injection coal seam gas displacement physical similarity simulation experiment table
  • Gas-injection coal seam gas displacement physical similarity simulation experiment table

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Embodiment Construction

[0016] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] like Figure 1-2 As shown, the embodiment of the present invention provides a gas injection displacement coal seam gas physical similarity simulation test platform, including a loading device, a degassing device, an adsorption device, a gas injection device, a drainage device, and a data acquisition device. The loading device includes a box Body 13, loading pressure head 11, hydraulic cylinder 16, oil circuit 20, control valve 21, hydraulic pump station 22 and capsule hole sealer 7, the box body 12 is wrapped with a heating layer 12 and a vacuum insulation layer 27, the A ball valve 29 is provided on the vacuum insulation layer 27, a ste...

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Abstract

The invention discloses a gas-injection coal seam gas displacement physical similarity simulation experiment table. A set of gas-injection coal seam gas displacement physical similarity simulation experiment table is established on the basis of a field gas-injection coal seam gas displacement technology. Experimental conditions can be controlled and changed manually, so that the influences of different types of injected gas, gas-injection pressure and gas-injection flow on the gas-injection displacement gas effect can be researched, the field gas-injection coal seam gas displacement technology can be simulated during an experiment, the simulation temperature and humidity are changed, and a certain reference is provided for the application of the field gas-injection coal seam gas displacement technology; meanwhile, the influence of simultaneous injection of multiple types of gas at different proportions on the gas-injection gas displacement effect can be detected.

Description

technical field [0001] The invention relates to the field of gas drainage, in particular to a gas injection displacement coal seam gas physical similarity simulation test platform. Background technique [0002] my country is the largest coal-producing country in the world, and it is also the country with the most serious disasters and accidents. Gas drainage is the fundamental measure to prevent and control coal mine gas disasters. Due to the characteristics of "three highs and three lows" of coal seam gas occurrence in my country, coal seam gas mining The effect of pre-pumping is not ideal, so it is necessary to take intensive measures for extraction. At present, domestic and foreign enhanced drainage measures mainly include hydraulic fracturing, hydraulic fracturing, deep hole pre-splitting blasting, etc., but the process is relatively complicated and the cost is high. The operation of gas injection displacement drainage is simple and the cost is low. Through the efforts ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F7/00E21B43/16
CPCE21B43/006E21B43/168
Inventor 马新足
Owner 马新足
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