Flow Unit Classification of Chang 8 Lithologic Oil Reservoir in Heshui District of Xifeng Oilfield
详细信息
- 责任者：Feng Yangwei (State Key Laboratory of Continental Dynamics ; Northwest University ; Xi’an 710069 ; China) ; Sun Wei
- 刊名：Fault-Block Oil and Gas Fields
- 出版年：2011
- 卷期：18(2)
- 关键词：岩性油气藏 ; lithologic reservoir ; 储层流动单元 ; reservoir flow unit ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.223-227
- 图表：2 illus., 2 tables, 17 refs.
- 分类号：1003
- issnNo：ISSN1005-8907
- isbnNo：CN41-1219/TE
摘要
On the basis of the analysis of core observation and well logging data, Chang 8 reservoir is classified vertically into fine isochronal stratigraphic units by applying high-resolution sequence stratigraphic theory. Through the analysis, this paper horizontally selects five weighting parameters: effective thickness, porosity, permeability, oil saturation and flow zone exponent. SPSS software is applied to cluster analysis for these parameters. The flow units can be divided into Class E, Class G, Class M and Class P. Various flow units are distinguished Microscopic percolation features of flow unit reveal that Class E and Class G flow units are the profitable reservoirs developed highly in the study area, and Class M flow unit is an enrichment zone of remaining oil, which are the key target of enhanced oil recovery.
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