Formation Mechanism of High-Quality Reservoir of Calcarenaceous Sandstone in Fourth Member of Xujiahe Formation, Fenggu Area, Western Sichuan Depression
详细信息
- 责任者：Luo Wenjun (School of Resources and Enviroment ; Southwest Petroleum Univesity ; Chengdu 610500 ; China) ; Peng Jun
- 刊名：Petroleum Geology & Experiment
- 出版年：2012
- 卷期：34(4)
- 关键词：砂岩储集层 ; sandstone reservoirs ; 四川盆地 ; Sichuan Basin
- 页码：p.412-416, 421
- 图表：2 illus., 2 tables, 19 refs.
- 分类号：1003
- issnNo：ISSN1001-6112
- isbnNo：CN32-1151/TE
摘要
The calcarenaceous sandstone reservoir in the fourth member of the Xujiahe Formation in Fenggu area of the Western Sichuan Depression is a typical tight sandstone reservoir. The analysis of reservoir feature and diagenesis has indicated that the differential cementation of reservoir calcite is the key for the preservation of primary pore in high-quality reservoir. Then, disruption communicates reservoir and acid fluid of hydrocarbon emplacement, improving reservoir quality. The later hydrocarbon charge protects reservoir porosity.