In the mining process of close distance outburst coal seams, a large amount of gas is
desorbed and discharged into the atmosphere causing the waste of coal bed gas resource …

Coalbed methane (CBM) has emerged as a key clean fuel. The efficient recovery of CBM
heavily relies on the materials used to seal cracks in gas drainage boreholes. This study …

我国碎软低渗煤储层分布广泛, 然而由于其煤体松软, 破碎, 渗透性差, 常规的直井/水平井煤储层
直接压裂技术应用于碎软低渗煤储层强化及其煤层气地面开发的效果并不理想 …

Coal rock is a type of geological material containing a natural cleat system. During coalbed
methane extraction, the influence of this system on the damage behavior and failure …

The uniaxial creep test offers a robust approach for investigating the creep behavior of coal
particles, while an empirical creep model based on the extended Langmuir equation …

During the gas extraction drilling process, especially the soft coal seam drilling process, due
to the constraints of geological conditions, technical conditions, and other factors, it is easy …

To prevent economic losses caused by borehole breakout during coalbed methane
extraction, it is essential to understand the mechanisms of borehole deformation and the …

Affected by tectonics, soft and hard composite coal seams are widely distributed in China;
the soft stratification in the soft and hard composite coal seam is the key to controlling the …

In order to achieve better sealing of boreholes, the performance of sealing materials is
modified to improve the efficiency of coalbed methane extraction. In this paper, a new type of …

Drilling for gas extraction, a common method in coal mine gas control, involves tedious
loading and uploading of drill pipes. This study aims to design a method for detecting and …