中国石油大学学报（自然科学版）2017，Vol.41Issue(2)：88-93,6.DOI:10.3969/j.issn.1673-5005.2017.02.010
地层水矿化度对含水饱和度精度的影响分析
Analysis for effect of variable formation water salinity on accuracy of water saturation
摘要
Abstract
Determining the formation resistivity of mixed fluid and the Archie's parameters precisely is the core technique for the evaluation of remaining oil saturation.During the water-flooding development,the formation resistivity of mixed fluid is however a dynamic parameter.In addition,when the water salinity varies in a wide range,the cementation exponent (m) and the saturation exponent (n) increase with increasing water salinity,affecting the accuracy in calculating water saturation using the Archie formula.In this paper,a method to obtain high-precision formation resistivity of mixed fluid is proposed using the theoretical simulation material balance method of variable multiple injected water.Based on the W-S model and Archie's formula,the formulas to calculate the dynamic cementation exponent (m) and saturation exponent (n) are derived,that potentially provides a series of geologic parameters for the calculation of water saturation.The study shows that the method can improve the accuracy of the resistivity of mixed liquid;and using dynamic values of the m and n can improve the accuracy of water saturation significantly.关键词
地层水矿化度/混合液电阻率/阿尔奇公式/含水饱和度Key words
formation water salinity/formation resistivity of mixed fluid/Archie formula/water saturation分类
天文与地球科学引用本文复制引用
申辉林,张立旭,谢莹峰,丁磊,黄洪奎,史安平..地层水矿化度对含水饱和度精度的影响分析[J].中国石油大学学报（自然科学版）,2017,41(2):88-93,6.基金项目
中海石油(中国)有限公司项目(YXKY-2014-ZJ-01) （中国）
