High-voltage electric pulse in-situ anti-reflection gas-bearing reservoir two-phase seepage test device

Abstract

The invention discloses a high-voltage electric pulse in-situ anti-reflection gas-bearing reservoir two-phase seepage test device which comprises a stress loading system, a high-voltage electric pulse fracturing operation system and a water-gas two-phase seepage system; the stress loading system comprises a pressure chamber, an axial pressure loading module and a confining pressure loading module; the high-voltage electric pulse fracturing operation system comprises a high-voltage electric pulse generation module, a high-voltage electric pulse signal monitoring module and a protection module; the water-gas two-phase seepage system comprises a water-gas pressure loading module and a flow data acquisition module. The high-voltage electric pulse in-situ anti-reflection gas-bearing reservoir two-phase seepage test can be carried out by simulating an electric pulse action coal body test under the conditions of different ground stress, different voltages and the like and simulating a high-voltage electric pulse cracking coal body physical test under the multi-physical field coupling action.

Description

technical field [0001] The invention relates to the field of mining of coalbed methane (mine gas), in particular to a high-voltage electric pulse in-situ anti-permeability gas-bearing reservoir two-phase seepage test device. Background technique [0002] As an emerging reservoir anti-reflection technology, high-voltage electric pulse crushing rock technology has been widely used in oil and gas mining, mineral processing, and coalbed methane mining in recent decades. The cracking effect of high-voltage electric pulse is to use the shock wave generated during the discharge process and the mechanical effect caused by the high temperature generated in the plasma channel to break the solid. In the field of coal seam anti-reflection technology, the high-voltage electric pulse coal seam anti-reflection technology has a series of advantages such as less energy consumption and high efficiency compared with the previous coal seam anti-reflection technology. At present, high-voltage e...

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Problems solved by technology

[0004] Although the existing electric pulse fracturing permeability enhancement system has realized the research on the high-voltage electric pulse fracturing coal body to a certain extent, it is unable to perform in-situ permeability enhancement and seepage on the loaded specimen during the test and obtain real-time Information, the amount of information obtained during the test is small, which limits the research on the response mechanism of the coal mass during the electric pulse fracturing process, and it is difficult to simulate the in-situ stress environment of the coal mass in deep mining

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