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 …

There is a significant diversity in the global coal basins in terms of their rank, age, geological
features and fracturing characteristics. A section of such coal basins is often not …

The pore structures in coal are the occurrence and migration space of coalbed methane
(CBM). Therefore, the research on the pore structures in coal is of great significance for the …

This article reviews the storage of captured CO2 in coal seams. Other geologic formations,
such as depleted petroleum reservoirs, deep saline aquifers and others have received …

The complex fracture-matrix structure of the unconventional reservoir will significantly affect
the gas seepage, energy conduction and the extraction properties. A good understanding of …

This paper provides a review of hydromechanical (HM) couplings in fractured rock, with
special emphasis on HM interactions as a result of, or directly connected with human …

Several investigators have reported coal permeability decreases with increasing stress, but
no conceptual model has been advanced to explain this effect. To better understand the …

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 …

Gas sorption by coal is closely related to its physical and chemical properties, which are, in
turn, governed by coal type and rank. The role of coal type (sensu maceral composition) is …

The matrix volume of coal shrinks when occluded gases desorb from its structure. In coalbed
gas reservoirs, matrix shrinkage could cause the fracture aperture width to increase, causing …