选择性堵水剂选择性堵水剂是指那些只堵水、不堵油的物质。这种堵水剂主要利用油和水、出油层和出水层之间的差异来达到选择性堵水的目的。下面是一些用到的选择性堵水剂。一、部分水解聚丙烯酰胺部分水解聚丙烯酰胺之所以能够选择性堵水是因为它的水溶液可以优先进入出水层(因出水层的含水饱和度高,对水的渗透率高)。在出水层中部分水解聚丙烯酰胺的 Selective water-blocking agent Selective water-blocking agent refers to those who only plug the water, not blocking the material. This plugging agent mainly uses the difference between oil and water, oil layer and water layer to achieve the purpose of selective water shutoff. Here are some of the selective plugging agents used. Partially Hydrolyzed Polyacrylamide Partially Hydrolyzed Polyacrylamide is able to selectively block water because its aqueous solution gives priority to entering the aquifer (due to its high water saturation and its high permeability to water). Partial hydrolysis of polyacrylamide in the effluent