砾岩油藏由于孔隙结构的特殊性，水驱油效率往往不高，近年来出现的复合体系驱替方法能够有效地提高油藏驱油效率。以克拉玛依砾岩油藏为例，利用微观模拟技术研究了砾岩油藏特殊孔隙结构条件下水驱残余油在复合体系作用下的起动、分散、运移及聚集问题。实验表明，三元复合体系各组分之间的协同效应使得它克服了单相化学剂驱油的缺点，聚合物较好地控制了流度，碱起到牺牲剂的作用，使表活剂能够向更深的地方扩散，既提高了驱油效率又降低了表活剂的用量，从而降低了成本；“油墙”的形成、发展与稳定运动对驱油效率有较大的影响，对“油墙”的形成机理进行了初步探讨；同时，详细分析了不同孔隙结构的驱油机理以及对驱油效率的影响。实验结果表明，三元复合体系能够较大幅度提高原油采收率，是提高砾岩油藏采收率的有效途径之一。图１表２参３（郭海莉摘） Due to the particularity of pore structure in conglomerate reservoir, the water flooding efficiency is often not high. In recent years, the composite system flooding method can effectively improve the reservoir flooding efficiency. Taking the Karamay conglomerate reservoir as an example, the problem of priming, dispersing, migration and accumulation of water-flooding residual oil under the composite system under the special pore structure of conglomerate reservoir was studied by microscopic simulation technique. Experiments show that the synergy between the components of the ternary complex system makes it overcome the shortcomings of single-phase chemical flooding, the polymer better control of the flow, the base play a role as a sacrificial agent, the surfactant Can spread to deeper places, not only improve the efficiency of oil displacement but also reduce the amount of surfactant, thus reducing the cost; the formation, development and stable movement of “oil wall” have a greater impact on oil displacement efficiency, Oil wall "formation mechanism of a preliminary discussion; the same time, a detailed analysis of different pore structure of the oil displacement mechanism and the impact of the displacement efficiency. The experimental results show that the ternary composite system can greatly enhance the oil recovery and is an effective way to improve the oil recovery of conglomerate reservoir. Figure 1 Table 2 Reference 3 (Guo Haili Abstract)