聚合物驱后砂岩储层岩石物理特征变化机制  

Variation mechanism of petrophysical property of sandstone reservoir after polymer flooding

作　　者：高建[1,2] 侯加根[2] 王军[1] 贾俊山[1] 蔡燕杰[3] 

机构地区：[1]中石化胜利油田地质科学研究院,山东东营257015 [2]中国石油大学资源与信息学院,北京102249 [3]中石化胜利油田孤岛采油厂,山东东营中257231

出　　处：《中国石油大学学报（自然科学版）》2009年第3期22-26,共5页Journal of China University of Petroleum(Edition of Natural Science)

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。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.

关 键 词：聚合物驱 测井响应 响应机制 岩电试验 

分 类 号：TE122.23[石油与天然气工程—油气勘探]