目前在水驱油实验中使用的光刻孔隙模型虽较以往有很大改进,但模型的孔隙结构及表面物理性质仍与实际储集岩有较大差距。最近我们研制成功的砂岩微观模型克服了这一缺陷。本文概要地介绍了新研制的砂岩模型及其初步实验结果,并讨论了排驱和吸入过程的驱替方式、自吸现象及残余油、水的形成机制。 At present, the lithographic pore model used in water flooding experiments has been greatly improved compared with the past, but the pore structure and surface physical properties of the model still have a big gap with the actual reservoir rocks. Recently we developed a successful sandstone microscopic model to overcome this shortcoming. This paper presents a brief introduction of the newly developed sandstone model and its preliminary experimental results, and discusses displacement methods, self-priming phenomena and formation mechanisms of residual oil and water during drainage and aspiration processes.