地质学报2017，Vol.91Issue(5)：1130-1140,11.
煤系页岩气储层非均质性研究——以宁武盆地太原组和山西组为例
Heterogeneity of Shale Gas Reservoirs in Coal Measures: A Case Study of the Taiyuan and Shanxi Formations in the Ningwu Basin
摘要
Abstract
Reservoir heterogeneity is one of the main bottlenecks that affect the exploration and development of shale gas in coal measures.By analyzing the compositional and reservoir characteristics of the shale samples of Taiyuan Formation (Fm.) and Shanxi Fm.in the Ningwu basin,the intervals and types of shale are divided.The macro heterogeneity of TOC,mineral porosity,surface area,pore volume and the micro heterogeneity of pore structure are analyzed to reveal the influencing factors of the macro-micro heterogeneity.The result shows that the average thickness of the shale in Taiyuan Fm.and Shanxi Fm.are 32.77 m and 67.68 m respectively,and can be divided in 5 intervals and 4 types of shale.According to the property parameters,the black shale with medium TOC,porosity,water sensitivity and high brittleness is high-quality reservoir which is most conducive for exploitation.The micro pores are mainly affected by the clay mineral content,showing a positive correlation,and TOC content is positively correlated with the micropore volume when the clay content is low.The macro heterogeneity of coal measure shale is mainly controlled by sedimentary and tectonic factors,while the micro heterogeneity is influenced by the diagenesis and evolution.The research results can provide a reliable basis for the selection of high quality reservoirs and fracturing process of shale gas in coal measures.关键词
煤系页岩气/储层非均质性/太原组和山西组/宁武盆地Key words
shale gas in coal measures/reservoir heterogeneity/Taiyuan Formation and Shanxi Formation/Ningwu basin引用本文复制引用
左兆喜,张晓波,陈尚斌,司庆红,张超,刘正..煤系页岩气储层非均质性研究——以宁武盆地太原组和山西组为例[J].地质学报,2017,91(5):1130-1140,11.基金项目
本文为中国博士后科学基金第八批特别资助项目(编号2015T80595)、中国博士后科学基金项目(编号2014M551684)和国家自然科学青年基金项目(编号41402124)资助成果. （编号2015T80595）
