Tectonic coal, formed after the intact coal being subjected to long-term intense squeezing,
shearing and deformation, is characterised by brittle or ductile damaged coal body, with the …

Recently, coalbed methane (CBM) has become one of the major unconventional gas
resources in the world. In 2017, the US CBM proved reserves were estimated at 336 Billion …

In-situ coal seam is generally under the stress constraint condition. However, the powder
coal is often adopted to study gas diffusion dynamics in the laboratory, in this case, the …

To research the dynamic mechanism of nitrogen and carbon dioxide displacement of
methane, we used the grand canonical Monte Carlo (GCMC) simulation method to …

To explore the effect of different functional group fractures in coal on the adsorption
characteristics of CH 4, molecular models of bituminous coal (Wiser) with fractured oxygen …

Pore size distribution of the coal is an important parameter for reliable prediction of coalbed
methane production which controls both diffusion (desorption time) and seepage (relative …

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 …

Using molecular dynamics, we simulated the diffusion behavior of supercritical methane in
shale nanopores composed of different matrix mineral types (organic matter, clay, and …

Gas desorption-diffusion plays a pivotal role in the coalbed methane extraction, CO 2
geological sequestration, CO 2 enhanced coalbed methane extraction and coal and gas …

In order to study the adsorption characteristics of single component, binary and ternary
mixed gases in lignite, the microscopic processes of CO 2 and N 2 injection for CH 4 …