【摘要】 通过样品测定、毛管压力和动静态井资料分析,对胜利油田注聚区的聚合物溶液电性特征、储层内部结构变化和注聚后的储层变化机制进行研究。结果表明:随着聚合物质量浓度的增加,混合溶液电阻率具有下降的趋势,下降幅度受聚合物溶液配制方式的影响;聚合物溶液的携带作用使聚驱前后储层表现为物性参数值变大、孔隙结构变好,见聚后由于聚合物滞留作用使孔隙结构变差,滞留聚合物质量浓度越大,孔隙结构越差;清水配制清水注入方式的聚合物驱替过程电阻率曲线呈斜躺"S"型,清水配制污水注入方式的聚合物驱替过程电阻率呈下降的趋势。更多还原

【Abstract】 The electricity characteristics of polymer solution and internal texture and variation mechanism of reservoir after polymer flooding were studied by sample determination,capillary pressure curve and the analysis of dynamic and static well data.The results show that the resistivity of polymer solution descends with polymer concentration ascending and the decline range is influenced by the make-up pattern of polymer solution.Reservoir s physical property increases and its pore texture is improved after polymer flooding,but the pore texture becomes bad because of the resident action of residual polymer.The higher the concentration of the residual polymer is,the worse the pore texture is.The formation resistivity change has the shape of slanting letter "S" with the injection of clear water and clear water make-up pattern and the formation resistivity change descends with the injection of clear water and waste water make-up pattern.更多还原