Over the past decade, the exploration and development of deep coalbed methane (CBM)
resources in China have attracted significant attention for their immense potential. Typically …

China produced 17.1 billion cubic meters (BCM) of methane sourced from coal seams in
2015, of which 4.43 BCM is from wells drilled from the surface. This level of production is a …

Pore pressures in most deep sedimentary formations are not hydrostatic; instead they are
overpressured and elevated even to more than double of the hydrostatic pressure. If the …

Underground coal mining has a strong disturbance on surrounding rock strata, causing
inevitable water inflow into mined spaces, which seriously affects safety production. Mine …

Efficiently and accurately understanding the fluid flow behavior in ultra-deep natural gas
reservoirs is very challenging due to the complex geological environment and the intricate …

Borehole instabilities pose significant challenges to drilling and completion operations,
particularly in regions with weak bedding planes and pre-existing fractures where formations …

Hydraulic fracturing is a key technology for improving the permeability of coal reservoirs.
Understanding the variation of hydraulically induced fractures is crucial for improving …

从煤层气, 页岩气基本概念入手, 系统分析了煤层气/页岩气开发地质条件,
主要包括成藏地质条件, 赋存环境条件和开发工程力学条件3 个方面, 进一步对煤层气/页岩气 …

采用鄂尔多斯盆地东南缘高煤级煤储层样品, 通过煤样的应力敏感性试验,
分析了煤储层应力敏感性及有效围压, 煤中裂隙和含水情况等对煤储层应力敏感性的影响 …

Coalbed methane (CBM) resources in China have been estimated to exceed 36 Tcm. As of
2014, there were∼ 9300 producing CBM wells in China with an annual production of∼ 4.4 …