采用孔道壁面亲水和亲油的两种微观孔隙物理模型,在水驱和聚合物驱之后接着进行表面活性剂稀溶液驱,利用显微录像和照相技术研究了表面活性剂稀溶液的驱油机理。研究结果表明聚合物驱之后进行表面活性剂驱油仍是有效的。 Two micropore physical models of hydrophilic and lipophilic pore walls were used to conduct surfactant flooding followed by water flooding and polymer flooding. The displacement mechanism of the dilute surfactant solution was studied using microscopy and photographic techniques . The results show that surfactant flooding is still effective after polymer flooding.