Hydraulic flushing (HF) is an efficient technique for improving coal mine gas extraction.
Although much research has been conducted in recent decades, many problems on its …

In-situ coal seam is generally under the stress constraint condition. However, the powder
coal is often adopted to study gas diffusion dynamics in the laboratory, in this case, the …

To enhance gas drainage in the soft and hard interbedded (SHI) coal seam, it's necessary to
unload the in-situ stress and improve its gas migration performance. In this research, a …

The injection of CO 2 or N 2 to displace CH 4 in coal seams can improve coalbed methane
(CBM) recovery. However, the migration pattern of these gases in the coal matrix is disputed …

With a sharp reduction in conventional oil and gas resources, tight oil and gas resources
have attracted great interest in the petroleum industry. Relative permeability plays an …

Abundant abandoned mine methane (AMM) accumulates in the mining-disturbed coal/rock
strata in abandoned coal mines. However, the simplified pore and fracture model of the …

The process of liquid slip on rough-walled hydrophobic surfaces with and without entrapped
gas bubbles is modeled. Here, starting with the Navier–Stokes equations, a set of partial …

Coal and gas outburst disasters in coal seams are becoming more serious as coal mines
extend deeper underground in China. Furthermore, the protective coal seam mining …

Closely-spaced outburst coal seams (COCS) is the main condition of coal seams in
southwest China, and gas disasters are one of the major problems affecting coal mine …

In this study, a phenomenon that can have significant technical and economic impacts in the
mining and unconventional gas production of hydrocarbon resources is discussed, change …