【摘要】 对二连地区27口井403块岩心岩电实验资料进行统计分析,发现胶结指数m与系数a具有很好的相关性,由此实现了单块岩心的胶结指数m和系数a的计算。分析了岩心胶结指数m的相关因素,得出胶结指数m与岩心孔隙度相关性较好且受流体矿化度影响的结论,实现了由测井资料计算胶结指数m,采用连续可变a、m值计算含油饱和度。该方法适应二连地区复杂砂岩岩石孔隙结构变化快的特性,有利于提高含油饱和度计算精度。更多还原

【Abstract】 Analyzed are 403 cores’ rock electricity experiment data of 27 wells in Erlian basin.Discovered is the good relationship between cementation exponent m and factor a,and this makes it possible to calculate the m and a of a single core.Analyzed are the relevant factors of core cementation exponent m,and the m is closely related to core porosity and influenced by fluid salinity,and so we can get the m from log data.Then computed is oil saturation from log data and continuous variable a,m,which is adaptable to pore structure variations of complex sandstone and improves the precision of calculatiing oil saturation.更多还原