Microcosmic Pore Structure in Low-Moderate Permeability Reservoir of Fuyu Oil Layer in Sanzhao Sag
- 责任者：Liu Yuan (China University of Petroleum ; Beijing 102249 ; China) ; Zhu Xiaomin
- 刊名：Natural Gas Geoscience
- 出版年：2010
- 卷期：21(2)
- 关键词：孔隙结构 ; pore structure ; 低渗透储集层 ; low permeability reservoirs ; 松辽平原 ; Songliao Plain
- 页码：p.270-275
- 图表：7 illus., 2 tables, 10 refs.
- 分类号：1003
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
By cast slices, co-focused SEM, traditional mercury-injection method, and constant rate mercury-injection method, the microcosmic pore structure in low-moderate permeability reservoir of Fuyu oil layer in Sanzhao sag was determined. The pore structure is very complex. According to permeability, associating with pore type, pore throat radium, ratio of pore throat radium, and connectivity of pore throat, the reservoir is divided into two groups: moderate permeability reservoir with moderate pore and small throat and low permeability reservoir. the latter is further classified into three types: moderate pore and small throat reservoir, small pore and unhomogeneous and subtle throat reservoir, and small pore and homogeneous and subtle throat reservoir. These classifications of reservoir will guide the future exploration for this area.