Laboratory observations have shown that coal permeability under the influence of gas adsorption can change instantaneously from reduction to enhancement. It is commonly believed that this instantaneous switching of permeability is due to the fact that the matrix swelling ultimately ceases at higher pressures and the influence of effective stresses take over. In this study, our previously-developed poroelastic model is used to uncover the true reason why coal permeability switches from reduction to enhancement. This goal is achieved through explicit simulations of the dynamic interactions between coal matrix swelling/shrinking and fracture aperture alteration, and translations of these interactions to perrmeability evolution under unconstrai...
Although the influence of gas sorption-induced coal deformation on porosity and permeability has bee...
ABSTRACT: The permeability of coal is an important parameter in the theory of coal reservoir gas flo...
To investigate the anisotropy of coal swelling, this study proposes an effective stress model for sa...
Stress-controlled swelling tests are normally conducted in the laboratory to characterize the evolut...
The goal of this study is to investigate how coal matrix strains affect the evolution of coal permea...
Although the influence of cross couplings between coal deformation, gas flow and thermal transport h...
Many researchers have concluded that the permeability should be measured after the adsorption equili...
We have developed a new coal-permeability model for uniaxial strain and constant confining-stress co...
We have developed a new coal-permeability model for uniaxial strain and constant confining stress co...
Coal permeability models are required to define the transient characteristics of permeability evolut...
The stress-dependent permeability of coal during coalbed methane production has been extensively stu...
Interaction of coal cleat and matrix plays an important role in determining the dynamic change of co...
Coal permeability is related to the fracture-pore structure of coal and is a key factor in determini...
This paper presents the inclusion of explicit dual poroelastic mechanical behaviour as part of an ex...
We construct theoretical models for time-dependent swelling of coal matrix material upon adsorption ...
Although the influence of gas sorption-induced coal deformation on porosity and permeability has bee...
ABSTRACT: The permeability of coal is an important parameter in the theory of coal reservoir gas flo...
To investigate the anisotropy of coal swelling, this study proposes an effective stress model for sa...
Stress-controlled swelling tests are normally conducted in the laboratory to characterize the evolut...
The goal of this study is to investigate how coal matrix strains affect the evolution of coal permea...
Although the influence of cross couplings between coal deformation, gas flow and thermal transport h...
Many researchers have concluded that the permeability should be measured after the adsorption equili...
We have developed a new coal-permeability model for uniaxial strain and constant confining-stress co...
We have developed a new coal-permeability model for uniaxial strain and constant confining stress co...
Coal permeability models are required to define the transient characteristics of permeability evolut...
The stress-dependent permeability of coal during coalbed methane production has been extensively stu...
Interaction of coal cleat and matrix plays an important role in determining the dynamic change of co...
Coal permeability is related to the fracture-pore structure of coal and is a key factor in determini...
This paper presents the inclusion of explicit dual poroelastic mechanical behaviour as part of an ex...
We construct theoretical models for time-dependent swelling of coal matrix material upon adsorption ...
Although the influence of gas sorption-induced coal deformation on porosity and permeability has bee...
ABSTRACT: The permeability of coal is an important parameter in the theory of coal reservoir gas flo...
To investigate the anisotropy of coal swelling, this study proposes an effective stress model for sa...