Diagenesis and Pore Evolution of Huagang Formation Tight Sandstone Reservoirs in a Structure of Xihu Depression in East China Sea Basin

详细信息   

• 责任者：Zhang Wu (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Xu Fa
• 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 ; 西湖凹陷 ; Xihu Sag
• 页码：p.122-129
• 图表：3 illus., 1 table, 14 refs.
• 分类号：1003
• issnNo：ISSN1671-9727
• isbnNo：CN51-1634/N

摘要

Through observing the cores of 3 wells in a structure of the Xihu depression in East China Sea Basin and identifying rock slices,scanning electron microscopy and testing reservoir physical property,the authors recognize and restore the reservoir diagenesis and the pore evolution process.The results show that the Oligocene Huagang Formation compacted sandstone has mainly undergone the compaction,cementation,dissolution and many kinds of diagenesis.At present,it comes to from B period of the middle diagenesis stage to the late diagenesis stage.