Microwave excitation coal-bed gas desorption and seepage experimental device

Abstract

The invention discloses a microwave excitation coal-bed gas desorption and seepage experimental device, and belongs to coal-bed gas desorption and seepage experimental devices. The microwave excitation coal-bed gas desorption and seepage experimental device comprises a tri-axial pressure device and a microwave generating device. The tri-axial pressure device comprises an upper gland, a lower gland, a barrel, a piston, a barrier, an upper pressure head and a lower pressure head, the microwave generating device comprises a microwave antenna, a waveguide tube, a resonant cavity, a magnetron and a controller, the upper gland and the lower gland are respectively arranged on the upper portion and the lower portion of the barrel, the piston is arranged inside the lower gland, the barrier is fixed onto the inner side wall of the lower gland, the lower pressure head is arranged inside the lower gland, and the microwave antenna is arranged on the inner side wall of the barrel; the upper pressure head is arranged in the barrel, and the waveguide tube, the resonant cavity, the magnetron and the controller are arranged on the outside of the barrel. The microwave excitation coal-bed gas desorption and seepage experimental device has the advantages that desorption and seepage functional tests can be carried out on coal, desorption and seepage laws of the coal under a microwave effect can be acquired, and reliable data can be provided for reasonably draining and comprehensively utilizing coal-bed gas resources.

Description

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AI Technical Summary

Benefits of technology

This new experimenter's equipment allows researchers to study how different types of gas are absorbing by rocks during drilling operations or other activities that cause them to leak into space around it. It also provides accurate measurements on these gases when they break down over time without losing their effectiveness. These experiments help scientists better manage and use this resource more efficiently than current methods like liquid-liquid extraction techniques.

Problems solved by technology

This patents describes two types of experiments that have been conducted at various levels: one involves studying how well peaty materials like shale behave when subjected to high temperatures; another involves exploring what happens if there's no external stimuli applied beforehand. These techniques involve conductive heat transfer between gases inside porous rock layers through electromagnetic waves called microwaves.

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