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应用胶体化学基本理论和水动力学原理,定量描述微粒沉积、分散和运移的规律,提出了注水过程中微粒分散运移的判定条件,定量分析了控制微粒分散运移的主导力系.既考虑了影响微粒分散运移的水动力学因素,又考虑了影响微粒分散运移的胶体表面化学因素.结果表明,不同油藏条件下,不同微粒表面电学特征对微粒分散运移具有本质上完全不同的影响,同时,注采速度始终是一个十分重要的影响因素.这个理论对水土保持、深层过滤、地下水工程特别是油田注水工程具有十分重要的指导意义.
Based on the basic theories of colloid chemistry and hydrodynamics, the law of deposition, dispersion and migration of particles is quantitatively described. The judgment conditions for the dispersion and migration of particles during water injection are proposed, and the dominant force controlling the dispersion and migration of particles is quantitatively analyzed. Considering the hydrodynamic factors that affect the dispersion and migration of particles, we also consider the colloidal surface chemistry that affects the dispersion and migration of particles. The results show that under different reservoir conditions, the surface electrical properties of different particles have essentially completely different effects on the dispersion and migration of particles. At the same time, the injection and extraction velocity is always a very important factor. This theory has very important guiding significance for soil and water conservation, deep filtration, groundwater engineering, especially oilfield waterflood engineering.