作者分析了有关文献和实验资料后指出,聚丙烯酰胺能大幅度降低岩层中水相渗透率,而对油相渗透率影响很小。从聚丙烯酰胺的结构性质看,也不会同酸作用形成永久性的堵塞物;另外,聚丙烯酰胺泥浆具有比重低、固相含量低及滤液分散性小等特点。因此,聚丙烯酰胺泥浆是对生产层损害较小的一种水基泥浆。 After analyzing the relevant literature and experimental data, the author pointed out that polyacrylamide can greatly reduce the permeability of the water layer in the rock formation, but has little effect on the permeability of the oil phase. From the perspective of the structural properties of polyacrylamide, it does not form a permanent plug with the action of acid. In addition, polyacrylamide mud has the characteristics of low specific gravity, low solid content and low filtrate dispersibility. Therefore, polyacrylamide mud is a water-based mud that impairs the production layer less.