• 责任者：Wang Huan (Key Laboratory of Petroleum Resource Research ; Chinese Academy of Sciences ; Lanzhou 730000 ; China) ; Wang Qi
• 刊名：Journal of Earth Sciences and Environment
• 出版年：2011
• 卷期：33(2)
• 关键词：盖层 ; cap rocks ; 琼东南盆地 ; Qiongdongnan Basin
• 页码：p.152-158
• 图表：5 illus., 3 tables, 21 refs.
• 分类号：1003
• issnNo：ISSN1672-6561
• isbnNo：CN61-1423/P

Based on the single well and sedimentary facies data, the mudstone caprock in Meishan Formation of Qiongdongnan Basin was comprehensively evaluated. The results showed that the lithology of caprock was mainly shallow-bathyal marine mudstone, and the caprock developed in northern uplift belt and central depression, and the lateral continuity was good. Based on the relationship between sonic interval transit time and the displacement pressure of observed rock sample, the difference of displacement pressure between sandstone in the first member of Sanya Formation and mudstone in Meishan Formation was calculated, and the microscopic evaluation was carried out. The results indicated that the characteristic of the difference of displacement pressure was high in the upland and low in the depression for single well.