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利用真实砂岩微观模型研究了鄯善油田三间房组油层微观水驱油特征。实验表明，扇三角洲前缘亚相与辫状河三角洲前缘亚相的分流河道沉积驱油效率无多大差异，并且在一定范围内，驱油效率随压力的升高而上升。三间房组的油层裂缝80％为充填缝，对水驱油过程无多大影响。由于三间房组油层强亲水，自吸对提高油层驱油效率是有利的。三间房组油层微观水驱油效率总体上高于安塞油田王窑区、科尔康油田白2块、五号桩油田桩23块三个低渗透油田（区块）。
The microscopic model of real sandstone was used to study the microscopic waterflooding characteristics of the Sanfangfang Formation in Shanshan Oilfield. Experiments show that there is not much difference between the distributary channel efficiency of distributary channel subfacies of fan delta front and braided delta front, and the displacement efficiency rises with the increase of pressure within a certain range. The Sanfangfang Formation fractures 80% of the filling gap, the water flooding process without much impact. Due to the strong hydrophilic and self-priming of the Sanfangfang Formation, it is beneficial to improve the oil displacement efficiency. The micro-water flooding efficiency of the Sanfangfang Formation is generally higher than that of the three low permeability oilfields (blocks) in Wangyao District of Ansai Oilfield, Block 2 of Ke’er Kang Oilfield and Pile 23 of Wu’liu Oilfield.