基于物性分类的含水饱和度计算方法——以帅垛油田阜宁组三段储层为例  

Water saturation calculation method based on physical property classification:a case study of the third section reservoir in Funing Formation,Shuaiduo Oilfield

作　　者：王安东 WANG Andong(Exploration&Development Research Institute of East China Oil&Gas Company,SINOPEC,Nanjing,Jiangsu 210011,China)

机构地区：[1]中国石化华东油气分公司勘探开发研究院,江苏南京210011

出　　处：《石油地质与工程》2025年第2期101-107,共7页Petroleum Geology and Engineering

摘　　要：帅垛油田阜宁组三段储层泥质含量高、厚度薄、物性差,导致储层测井响应特征复杂,利用Archie方程计算含水饱和度精度低。利用帅垛油田阜宁组三段地质、岩石物理实验、测井及测试等资料,结合储层岩性、电性、物性对含水饱和度参数的影响分析,通过体积模型开展泥质校正,建立了基于泥质校正的声波孔隙度计算模型,降低了泥质含量对孔隙度的影响;利用薄层电阻率校正图版对研究区视电阻率进行校正,消除了薄层对电阻率测井响应特征的影响;并通过对构建的物性指示参数分类建立了不同物性条件下含水饱和度计算方法。实践应用表明,该计算方法在帅垛油田阜三段储层应用效果良好,计算含水饱和度结果与岩心分析结果吻合,对区内储量评价具有一定指导意义。The high shale content,thin layer development and poor physical property of the third section of Funing Formation in Shuaiduo Oilfield lead to complex reservoir response characteristics and low accuracy of oil saturation calculation using Archie equation.This article analyzes the influence of reservoir lithology,electrical properties,and physical properties on water saturation parameters through geological,rock physics experiments,logging,and testing data.Based on the volume model,shale correction is carried out,and a acoustic porosity calculation model based on shale correction is established to reduce the influence of shale content on porosity.The apparent resistivity of the study area is corrected by using the thin-layer resistivity correction chart,and the effect of thin layer on the resistivity logging response is eliminated.Finally,a method for calculating water saturation under different physical property conditions was established by classifying the constructed physical property indicator parameters.The example analysis shows that this method has a good application effect,and the calculated water saturation results are consistent with the core analysis results.Therefore,the study has a good guidance for the reserves evaluation in the area.

关 键 词：泥质校正 孔隙度 薄层 物性分类 含水饱和度 

分 类 号：TE122.2[石油与天然气工程—油气勘探]