A testing device and method for evaluating the pressure heterogeneity of coal reservoirs

Abstract

The invention discloses a testing device and operation method for evaluating the pressure heterogeneity of coal reservoirs, which falls under the technical fields of coal mine safety and coalbed methane extraction. The device includes a gas source, a gas pressure sensing system, a liquid pressure sensing system, a solid pressure sensing system, a pressure system, a sample loading system, and a data acquisition system. By adopting this structure, the testing device and operation method provide a means to evaluate the pressure heterogeneity of coal reservoirs. It holds significant importance for studying the gas pressure gradient distribution of coal reservoir and the dynamic changes in the two-phase pressure of water and gas during the process of coalbed methane extraction in tectonic coal reservoirs.

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