Abstract: Seepage flow test of alkali-surfactant-polymer ternary composite oil displacement agent system (hereinafter refers to as the ASP system) was conducted with Sandpack model.Effect of permeability and length of the Sandpack on chromatographic separation phenomenon of the ASP system was investigated.Experimental results showed that under all separate conditions of permeability and length of the Sandpack,the ASP system displays remarkable chromatographic separation phenomenon.When the permeability reduces from 0.601 μm² to 0.390 μm²,the extent of chromatographic separation increases while when the length of the Sandpack increases from 100 cm to 240 cm,the extent of chromatographic separation displays somewhat increment.Such results indicated that both permeability and length of the Sandpack affect the chromatographic separation of the ASP system;while effect of the permeability is stronger than that of the length.

Key words: alkali surfactant and polymer system, chromatographic separation, Sandpack, permeability