Geological Features of Tight Sandstone Reservoir of Member 2 of Xujiahe Formation in Yingshan Structure,Central Sichuan,China

详细信息   

• 责任者：Yong Ziquan (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Wang Hao
• 刊名：Journal of Chengdu University of Technology
• 出版年：2012
• 卷期：39(2)
• 关键词：致密砂层 ; tight sands ; 砂岩储集层 ; sandstone reservoirs ; 四川盆地 ; Sichuan Basin
• 页码：p.137-144
• 图表：illus.,2 tables,14 refs.
• 分类号：1003
• issnNo：ISSN1671-9727
• isbnNo：CN51-1634/N

摘要

 
    

Member 2 of Upper Triassic Xujiahe Formation is a set of debris-feldspar and feldspar-quartz sandstone in the Yingshan structure. Based on the cores, the flake observation and physical properties data of the reservoir in the T3x2, this paper indicates that the 2nd member belongs to the front-delta deposition. The main reservoir sandy bodies have deposited in subaqueous distributary channel and distributary mouth bar with intergranular pore and intragranular pores as reservoir space. The reservoir is a cracked-porous type with low porosity and low permeability. The reservoir’s development is influenced by both sedimentary facies and diagenesis.