We explore the fully coupled thermo-hydro-mechanical-chemical (THMC) response of CO 2
enhanced CBM recovery (CO 2-ECBM) considering the coupling relationships of …

Injection of gas mixtures (CO 2, N 2) into coal seams is an efficient method to both reduce
CO 2 emissions and increase the recovery of coalbed methane. This process involves a …

Gas diffusion, a critical process during underground gas drainage and coalbed methane
recovery, is viewed as the bridge connecting the coal matrix and fractures. Study on gas …

Injecting CO 2 into the methane-bearing coal seams can not only store CO 2 but improve
coalbed methane recovery. In this paper, a fully coupled adsorption-hydro-thermo …

The pore structure of coal reservoirs determines the reserves of coalbed methane, and the
gas permeability determines the level of the production capacity. In this study, the SEM …

Temperature is a key factor affecting the CO 2 injection efficiency and CH 4 production
efficiency, so it is of great significance to clarify the evolution diagram of temperature change …

Steady-state flow methods are widely applied in the laboratory where permeability evolution
is typically evaluated assuming a uniform pressure gradient along the sample. The accuracy …

Coal in a natural geological mass is typically heterogeneous, potentially containing widely
distributed faults that affect gas migration and are closely associated with the occurrence of …

Gas drainage in boreholes is characterized as an essential means to control abnormal gas
emissions during mining. Unfortunately, its drainage efficiency is terribly restricted by high in …

High-voltage electrical pulses (HVEP) can potentially be used to increase the yield of low-
permeability coalbed methane (CBM) reservoirs. This study highlights the pore change and …