Improve the Saturation Calculation Using Porosity Model Varied with Fracture Dip in Fractured Reservoir

• 责任者：Lai Fuqiang (Faculty of Geo-Resource and Information ; China University of Petroleum ; Dongying 257061 ; China) ; Sun Jianmeng
• 刊名：Journal of Jilin University
• 出版年：2010
• 卷期：40(3)
• 关键词：裂隙型储集层 ; fractured reservoirs ; 地球物理测井 ; geophysical logging
• 页码：p.713-720
• 图表：4 illus., 18 refs.
• 分类号：1600
• issnNo：ISSN1671-5888
• isbnNo：CN22-1343/P

By assuming the conductivity way between different pore types, the method of establishing a reasonable porosity model and further combining with Archie equation to calculate water saturation is a conventional way. In the previous dual-porosity model, the effect of fracture dip and fracture tortuosity was not considered. The authors provide an improved porosity model varied with fracture dip and fracture tortuosity to reprocess the exponent index m and water saturation in fractured reservoir. By contrast with the core analysis data, the improved porosity model is more reasonable, and it maybe leads to a relative error of 32.1% while using the previous porosity model.