摘要
该文概要介绍了国内外有关影响冻胶类堵剂封堵性能的因素的研究情况，具体分析了冻胶类型及组成、岩心含油饱和度、渗透率、岩石的润湿性、驱替相类型对堵剂封堵性能和堵水调剖效果的影响，表明冻胶本身的结构特性是影响冻胶封堵率的根本因素；冻胶的封堵率随着岩心含油饱和度的增加而减小，同时受到岩石的润湿性和驱替相类型的影响；冻胶对亲水岩石的封堵率大于对亲油岩石的封堵率，对水相的堵塞程度大于对油相的堵塞程度。在此基础上推导出了调剖堵水施工中堵剂封堵率的计算公式。
The paper introduced brierly influence factors on plugging performance of gel plugging agents at home and abroad,and analyzed influence of gel types and compositions,oil saturation,permeability,wettability and displaced phase types on the plugging performance of the plugging agents and water plugging profile control effect.It has been found that the structure character of gel is a main factor influencing gel plugging ratio.With the increase of rock oil saturation the gel plugging ratio decreases.Gel plugging ratio for water wet rock is larger than that for oil wet rock by virtue of the influences of rock wettability and displaced phase types.Then the calculating formula of plugging ratio is derived for the purpose of water plugging operation.
关键词
水溶性聚合物
冻胶
堵水
调剖剂
油井
gel,oil saturation,permeability,wettability,displacement fluid, plugging, performance residual resistance factor
