• 责任者：Chen Wenling (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Zhou Wen
• 刊名：Journal of Chengdu University of Technology
• 出版年：2013
• 卷期：40(5)
• 关键词：页岩气 ; shale gas ; 黑色页岩 ; black shale ; 四川盆地 ; Sichuan Basin
• 页码：p.554-561
• 图表：14 illus., 2 tables, 21 refs.
• 分类号：1003
• issnNo：ISSN1671-9727
• isbnNo：CN51-1634/N

     This paper adopts a series of measures, including SEM, mineral surface area, pore volume, pore diameters, total organic carbon （TOC）, vitrinite reflectivity （Ro）, source rock pyrolysis and X- ray mineral analysis, to research the pore characteristics and the main controlling factors of the black shale from the Upper Triassic Xujiahe Formation of Sichuan Basin. The results show that the main pore types are intergranular pores, grain boundary fractures, organic gas pores, intergranular dissolved pores, clay minerals intergranular pores and micro-fractures. The diameters of intergranular pores, intergranular dissolved pores and grain boundary fractures can reach micron level. The pore diameters are 0. 895%19. 907 nm. They are mainly micropores. The micropore and mesopore volume accounts for 92.5% of the total volume. The main controlling factors of the shale pores are the depth, diagenetic evolution, mineral, organic matter and the thermal evolution. The increasing of buried depth can decrease the micropore and mesopore volume, but the dissolution and the change of clay mineral assemblages in the diagenetic evolution stage can increase the macropore volume. TOC is a key controlling factor which has a positive correlation with micropore and mesopore volume, surface area, and micron pore diameter （SEM）. Ro has week control over the pore diameter and volume.