The purpose of this research is to investigate the properties of pore-fracture system and to reveal the relationship between the physical properties of coal reservoirs and recovery of coalbed methane in Huainan and Huaibei coal-fields.
借助于光学显微镜显微裂隙分析、压汞孔隙分析及低温氮吸附试验等手段,研究了两淮煤田煤储层孔、裂隙系统发育情况。
There exist lots of factors influencing the differencial distribution of permeability,from such aspects as the development of fracture system,the effective stress of coal-bed reservoirs,coal-bed tectonic evolution and coal-bearing rock metamorphic degree,the relationship among them and spacial distribution of highly permeable areas and the research progress are illustrated.
煤储层渗透性是制约煤层气勘探选区的重要参数,影响渗透率差异分布的因素有很多,从裂隙系统的发育、煤储层有效应力、煤层构造演化、煤岩变质程度几个方面阐述了它们与高渗区空间分布的关系及其研究进展。
In this paper, the advances in overseas research on the origin and reservoir characteristics of coalbed gas (CBG) are selectively summarized in the light of three aspects: the CBG-generating mechanism and its geological controls; the porous structure and adsorption/desorption of coal; fissure systems and their effect on the permeability of coal reservoirs.
从煤层气生成机制及其地质控制、煤储层孔隙结构与吸附/解吸行为、煤储层裂隙系统及其对渗透率的影响三个方面,有重点地总结了国外有关煤层气成因和煤储层物性研究的新进展。
With the analysis on the pressurized mercury experiments, a research was done on the development conditions of the porosity and fissure systems in the seams of the coalfield in Qinan Mining Area.
借助压汞试验分析,研究了祁南矿区煤田煤储层孔、裂隙系统发育情况,发现该区煤储层孔、裂隙系统具有:①微裂隙非常发育,多以宽度小于5μm,且长度小于300μm的裂隙为主体;②孔隙度较小,且孔隙类型中吸附孔(0~100nm)远比渗流孔(大于100nm)发育;③吸附孔多为连通性较差的一端封闭的平行板毛细孔。
The coupling analysis between permeability and stress included permeability-stress coupling of porous media and permeability-stress coupling of fissure system.
渗流-应力耦合包括多孔介质的渗流-应力耦合和裂隙系统的渗流-应力耦合两方面的内容。
