高校地质学报2012，Vol.18Issue(3)：522-527,6.
沁水盆地南部煤层孔隙-裂隙系统及其对渗透率的贡献
Pore and Fracture Systems and Their Contribution to the Permeability of Coal Reservoirs in Southern Qinshui Basin
摘要
Abstract
Based on the studies of the conventional porosity and permeability, nuclear magnetic resonance (NMR) and scanning electron microscope (SEM), pore and fracture system and its permeability contribution of the coal reservoirs in southern Qinshui basin were discussed. Results showed that the pores of coal samples are mainly composed of adsorption pores while seepage pores develop poorly, resulting in a very low porosity for movable fluid. Percentage of large fissures with type A and B is relatively low in most coal samples, while small fissures with type C and D develop well. Macropores and microfissures have commonly with most important contribution to the permeability of coals. The macropore porosity in the samples from the Qinshui basin is relatively low with most of the fissures filled by minerals. The connectivity among the pores and fissures is poor, which decrease the permeability of the coal reservoir in the Qinshui basin in general. Macroscopic tectonic fissures may improve the permeability of the coal reservoirs to a certain extent.关键词
沁水盆地/煤/孔隙/裂隙/渗透率Key words
Qinshui Basin/ coal/ pore/ fissure/ permeability分类
天文与地球科学引用本文复制引用
陶树,王延斌,汤达祯,许浩,何伟,李勇..沁水盆地南部煤层孔隙-裂隙系统及其对渗透率的贡献[J].高校地质学报,2012,18(3):522-527,6.基金项目
国家科技重大专项(2011ZX05034-01) （2011ZX05034-01）
国家重点基础研究发展规划项目(2009CB219604) （2009CB219604）
煤层气资源与成藏过程教育部重点实验室(中国矿业大学)开放基金资助项目(2012-001)和中国博士后科学基金(2011M500433)联合资助 （中国矿业大学）
