Abstract: The matching relation between HPAM (partially hydrolyzed polyacrylamide) KYPAM-II and the pores of nuclepore film was investigated using nuclepore film filtration, scanning electron microscope(SEM) and dynamic light scattering (DLS). The results indicate that when the polymer KYPAM-II solution passed through nuclepore films with different pore diameters, the figure of the filtration curves, the solution viscosity and concentration before and after filtration, and the size variation of polymer molecular clews differed. Sharp changes in the shape of the solution filtration curve, concentration and viscosity of the solution and size of the polymer molecular clews occurred at a nuclepore film pore diameter of 0.6~0.7 μm, where retention of the polymer molecules began to occur. Pores less than 0.7 μm could be readily blocked by the polymer molecules, while pores larger than that show good matching with the polymer KYPAM-II without blocking. It may be concluded from this study that the polymer KYPAM-II has good matching only with large nuclepore film pores.

Key words: Polymer flooding, Viscosity, Nuclepore film, Retention

摘要： 采用核孔膜过滤、扫描电镜（ＳＥＭ）和动态光散射（ＤＬＳ），研究了部分水解聚丙烯酰胺（ＨＰＡＭ）ＫＹＰＡＭ－ＩＩ与核孔膜孔径间的匹配关系。结果表明，聚合物溶液通过不同孔径的核孔膜时的过滤曲线、过滤前后溶液的粘度、质量浓度及聚合物分子线团大小均发生不同程度的变化。聚合物ＫＹＰＡＭ－ＩＩ溶液通过孔径０．６～０．７μｍ核孔膜时，溶液的过滤曲线、溶液质量浓度、粘度及分子线团尺寸大小均发生较明显的变化，聚合物分子在核孔膜表面发生了明显的滞留现象，容易对孔径小于０．７μｍ的核孔膜产生堵塞作用。而聚合物ＫＹＰＡＭ－ＩＩ与孔径大于０．７μｍ的核孔膜匹配关系较好，不会对其造成堵塞。聚合物ＫＹＰＡＭ－ＩＩ与较大孔径的核孔膜相匹配，聚合物与核孔膜孔隙的匹配性主要与其分子线团大小及核孔膜孔隙大小有关。

关键词: 聚合物驱 , 粘度 , 核孔膜 , 滞留