• 责任者：Lai Jin (College of Geosciences ; China University of Petroleum ; Beijing 102249 ; China) ; Wang Guiwen
• 刊名：Geology in China
• 出版年：2013
• 卷期：40(3)
• 关键词：砂岩储集层 ; sandstone reservoirs ; 四川 ; Sichuan Province
• 页码：p.927-938
• 图表：8 illus., 1 table, 21 refs.
• 分类号：1003
• issnNo：ISSN1000-3657
• isbnNo：CN11-1167/P

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     Petrologic characteristics, physical properties and pore structure characteristics of Xu2 (2nd member of Upper Triassic Xujiahe Formation) and Xu4 reservoirs were studied by means of core observation, normal thin section and casting thin section observation, scanning electron microscope analysis, mercury injection test and nuclear magnetic resonance experiment. The results show that the lithology of Xu2 and Xu4 reservoirs is dominated by feldspar lithic sandstone and lithic sandstone, the main reservoir space consists of intragranular corrosion pores and intergranular corrosion pores, and the reservoirs are characterized by low porosity and low permeability with strong heterogeneity. The results can provide guidance for the classified evaluation of Xu2 and Xu4 reservoirs and for the further gas exploration in the study area.