Experimental apparatus and method for multi-physical field synergistic stimulation of methane diffusion in coal sample

Abstract

This application relates to the technical field of methane diffusion testing, and specifically relates to an experimental apparatus for multi-physical field synergistic stimulation of methane diffusion in a coal sample. In this experimental apparatus, an alternating magnetic field is applied by the magnetic field unit, causing temperature changes in the magnetic particles due to the magnetocaloric effect; a microwave field is generated by the microwave unit, acting on the entire interior of the simulated sample; the experimental study on the influence of stimulating methane diffusion in the coal sample is realized under the mutual synergistic effect of multi-physical fields such as the magnetic field and / or the microwave field, which is conducive to increasing the seepage capacity of coal reservoirs and promoting the diffusion capacity of coalbed methane, beneficial for improving coalbed methane production, and provides good technical support for exploring new coal reservoir stimulation methods.