Abstract: In this article, a procedure of making a two-dimentional physical model of micro-layered sandstone and the technique of microphotography are presented. The movement of fluids through porous medium can be observed directly with a projector. The technique has provided a rapid, accurate and convenient method for observing the variations of flooding fronts and studying oil displacement mechanism and residual oil distribution intended for enchancement of oil recovery. Emphasis is laid on the characteristics and mechanism of oil displacement by waterflooding, microemulsion and surfactant solutions, on the evaluation of the application of polymer buffer slug in fluid mobility improvement. A trace quantitative determination for a Part of test process has also been conducted,

摘要： 本文介绍了两维薄层砂岩物理模型的制作方法和显微摄影技术,该模型通过投影仪能够用来直接观测流体在孔隙中的运动。这项技术提供了一种快速、准确、简便的观察水驱前缘变化过程,研究驱油机理、剩余油分布规律和提高采收率的实验方法。文章主要阐明了水驱、微乳液和活性剂水溶液的驱油过程特征和驱油机理,并对聚合物缓冲段塞改善流动状况作出了评价。还进行了部分试验过程的微量定量测定。