地层水电阻率是电测解释中的主要参数之一。目前由测井资料判断油水层、用来衡量油层品级的两个主要参数——含油多少和可动程度——都离不开它。测井解释者把孔隙度、地层电阻率和地层水电阻率习惯上称为测井解释的“三大参数”。通常求取地层水电阻率有三种方法,即化学分析法,自然电位法和地层电阻率 Formation water resistivity is one of the main parameters in electrical interpretation. Judging from the well logging data, the two main parameters that are used to measure the oil grade, oil content and mobility, can not be separated from it. Log interpreters have traditionally referred to porosity, formation resistivity and formation water resistivity as the “three major parameters” of log interpretation. There are usually three methods for determining formation water resistivity: chemical analysis method, natural potential method and formation resistivity