Coupled coal–gas interaction in coal seams is crucial to the efficient recovery of Coalbed
methane (CBM), and carbon dioxide-enhanced CBM (CO2-ECBM). Coal is physically …

When hydraulic fractures do not expand in the direction required by a project, it is difficult to
enhance coal seam permeability effectively. Slotting–directional hydraulic fracturing (SDHF) …

Field monitoring of hydraulic fractures is currently expensive, and the recorded data is often
limited to reflect fracture networks, implying the necessity of utilizing additional evidence to …

Hydraulic fracturing is mainly used for increasing large-scale coal seam permeability in coal
mines to exploit coalbed methane and prevent coal and gas outbursts. However …

Hydraulic fracturing is an effective method for producing coalbed methane. To better
understand the evolution of the fracture and pore structure of coals that contain macro …

Hydraulic fracturing is commonly used to enhance the hydraulic conductivity of geothermal,
oil, and gas reservoirs, particularly those situated in enclosed and unconventional …

The continuous injection of fracturing fluid results in a redistribution of stress in the area
affected by fracturing, which promotes the deformation and failure of coal. To reveal the …

Directional hydraulic fracturing (DHF) has been used in conductivity improvement of oil, gas
and geothermal energy reservoirs and hard rock roof breaking in coal mines. Although the …

Hydraulic fracturing operations have been widely used to enhance reservoir permeability
during the extraction of oil, shale gas and tight sandstone gas. Recently, non-aqueous …

Horizontally transverse isotropy (HTI) induced by vertical or subvertical aligned fractures is
common for unconventional fractured porous shale oil or gas reservoirs. Compared with the …