Gas diffusion in coal particles: A review of mathematical models and their applications

W Zhao, Y Cheng, Z Pan, K Wang, S Liu - Fuel, 2019 - Elsevier
As key flow properties for coalbed methane production, greenhouse gas reduction through
CO 2 storage in coal and gas drainage to improve mining safety, knowledge of gas diffusion …

Modelling permeability for coal reservoirs: a review of analytical models and testing data

Z Pan, LD Connell - International Journal of Coal Geology, 2012 - Elsevier
As with other reservoir types permeability is a key controlling factor for gas migration in
coalbed methane reservoirs. The absolute permeability of coal reservoirs changes …

Comparative analysis of permeability rebound and recovery of tectonic and intact coal: Implications for coalbed methane recovery in tectonic coal reservoirs

J Wei, E Su, G Xu, Y Yang, S Han, X Chen, H Chen… - Energy, 2024 - Elsevier
The permeability rebound and recovery of coal reservoirs is one of the key factors affecting
the efficient recovery of coalbed methane (CBM). Most studies focus on the permeability …

Interactions of multiple processes during CBM extraction: a critical review

J Liu, Z Chen, D Elsworth, H Qu, D Chen - International Journal of Coal …, 2011 - Elsevier
Coal permeability models are required to define the transient characteristics of permeability
evolution in fractured coals during CBM recovery. A broad variety of models have evolved to …

A fully coupled thermal-hydraulic-mechanical model with two-phase flow for coalbed methane extraction

S Li, C Fan, J Han, M Luo, Z Yang, H Bi - Journal of Natural Gas Science …, 2016 - Elsevier
Although the interaction of gas and coal has been comprehensively investigated in coalbed
methane (CBM) extraction process, fewer scholars have taken the effect of temperature and …

Numerical modeling of gas extraction from coal seam combined with a dual-porosity model: Finite difference solution and multi-factor analysis

H Xu, Y Qin, F Wu, F Zhang, W Liu, J Liu, M Guo - Fuel, 2022 - Elsevier
Gas extraction from coal seams is an extremely significant technical measure for preventing
gas hazards and predicting coalbed methane (CBM) reservoir. Gas diffusion and seepage …

A model of coal–gas interaction under variable temperatures

WC Zhu, CH Wei, J Liu, HY Qu, D Elsworth - International Journal of Coal …, 2011 - Elsevier
Although coal–gas interactions have been comprehensively investigated, fewer studies
consider the impact of thermal effects. In this study, a fully coupled model of coal …

Permeability evolution during progressive deformation of intact coal and implications for instability in underground coal seams

S Wang, D Elsworth, J Liu - International Journal of Rock Mechanics and …, 2013 - Elsevier
We report measurements of deformation, strength and permeability evolution during triaxial
compression of initially intact coals. Permeability is continuously measured by the constant …

Enhanced coalbed methane recovery

M Mazzotti, R Pini, G Storti - The Journal of Supercritical Fluids, 2009 - Elsevier
The recovery of coalbed methane can be enhanced by injecting CO2 in the coal seam at
supercritical conditions. Through an in situ adsorption/desorption process the displaced …

A mathematical model of coupled gas flow and coal deformation with gas diffusion and Klinkenberg effects

Q Liu, Y Cheng, H Zhou, P Guo, F An… - Rock Mechanics and Rock …, 2015 - Springer
The influence of gas diffusion behavior on gas flow and permeability evolution in coal seams
is evaluated in this paper. Coalbed methane (CBM) reservoirs differ from conventional …