Pore and Fracture Systems and Their Contribution to the Permeability of Coal Reservoirs in Southern Qinshui Basin

详细信息   

• 责任者：Tao Shu (State Key Laboratory of Coal Resources and Safe Mining ; China University of Mining and Technology ; Beijing 100083 ; China) ; Wang Yanbin
• 刊名：Geological Journal of China Universities
• 出版年：2012
• 卷期：18(3)
• 关键词：煤 ; coal ; 渗透率 ; permeability ; 沁水盆地 ; Qinshui Basin
• 页码：p.522-527
• 图表：2 illus., 4 tables, 17 refs.
• 分类号：1004
• issnNo：ISSN1006-7493
• isbnNo：CN32-1440/P

摘要

    

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. The 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.