油层低电阻率及阿尔奇公式中各参数的岩电实验研究

Low Reservoir Resistivity and Litho-electric Experiment of Each Parameter in Archie Equation

通过大量实验数据,说明油层低电阻率主要是由粘土附加导电、阳离子交换量等因素引起的。讨论了温度、压力对阿尔奇公式中各参数的影响效果,得出高温高压条件下饱和度指数n和孔隙度指数m的变化规律。

Large number of experimental data indicate that reservoir low resistivity is mainly resulted from additional conductivity and cation exchange. The effect of temperature and pressure on each parameter in Archie equation is disscussed , variation rules of porosity index m and saturation index n under high temperature and high pressure are obtained.