Cleat and permeability altered by CO2 injection are key issues for enhanced coalbed
methane production and CO2 geo-sequestration into unminable coal seams. As the main …

It is of great significance to quantitatively describe the change in the permeability of the
water-injected coal to improve the effect of the coal seam water injection technology …

Complexity of fracture development in low permeability oil and gas reservoirs is of interest to
many field operators for production enhancement. In highly jointed shales such as Marcellus …

Liquid nitrogen (LN 2) cooling can induce significant cracking damage in coalbed methane
(CBM) reservoirs. To investigate the combined effects of LN 2 cooling and bedding angles …

In layered formations such as the Wufeng-Longmaxi marine shale, mechanical rock
properties may be uniform horizontally within a layer, but vary vertically, and from layer to …

Demand for a cleaner source of energy is increasing in India. In the search for alternate
energy sources, coal bed methane gas receives considerable attention for its potential as a …

Thermal shocking effect occurs when the coalbed methane (CBM) reservoirs meet liquid
nitrogen (LN2) of extremely low temperature. In this study, 3D via X-ray microcomputer …

Coalbed gas outburst processes commonly occur in ductile shear zones and release gas
quantities that far exceed the maximum gas adsorption capacity of coal seams. Although …

Coal reservoirs exhibit a ternary structure comprising pores, microfissures, and macro-
fissures, crucial for determining permeability and influencing the adsorption–desorption …

The seepage range of dynamic water in coal seam water injection technology directly
determines the disaster prevention effect. However, in the process of coal formation, primary …