高孔高渗砂岩聚驱后的岩电参数变化影响因素

储层的岩电参数随着油藏开发逐渐发生变化。通过实验研究聚合物采油后储层的岩电参数变化，结果表明：岩电参数明显受到聚合物驱替浓度和配制方式的影响，驱替浓度大，储层泥质含量低，孔隙结构好，相应a 值变大，m和n 变小，b 值稳定；实验证实阿尔奇公式依然适用聚驱后储层，沉积微相直接控制产出聚合物浓度，可以分相带选取岩电参数进行饱和度解释。

Influencing Factars of Rock-electrical Parameters Alternation Causes after Polymer Flooding in High Porosity and High Permeability Sand Rock

Rock-electrical parameters are studied through many experiments and saturation interpretation are made in the geological condition.The study is show that polymer solution have low mobility and conductivity;polymer Concentration have effect on rock-electrical parameters,and shale content is lower and pore texture is better when concentration becomes higher.Correspondingly,a is bigger and m and n are smaller.Sedimentary microfacies control product polymer concentration directly.The Archies formula is suitable for polymer flooding reservoir,and saturation interpretation are made by using of different rock-electrical parameters.