近年来 ,三元复合驱作为一种最具发展潜力的提高采收率方法已在大庆油田投入多个矿场试验 ,取得了较好的增油效果。但由于现有三元复合体系化学剂费用投入大 ,经济效益差 ,使其应用受到极大限制。采用数值模拟方法对三元复合驱剩余油分布特征进行了较为系统的研究 ,结果发现 ,三元复合驱在一定程度上加重了油藏“层间和平面”矛盾。在此基础上 ,通过数值模拟方法对复合体系配方进行筛选 ,并利用物理模拟方法对优化配方的驱油效果进行了评价 ,采收率提高幅度超过 2 0 % ,节约化学剂费用 30 %以上。实验结果表明 ,“低活性剂、低碱浓度、高聚合物浓度”三元复合体系是一种高效、廉价的驱油体系。 In recent years, ASP flooding, as one of the most promising methods for enhanced oil recovery, has been put into operation in a number of mines in Daqing Oilfield and has achieved good oil-enhancing effect. However, due to the large cost of chemicals in the existing ternary complex system and poor economic benefits, its application has been greatly restricted. The distribution of residual oil in ASP flooding was systematically studied by numerical simulation. The results show that ASP flooding aggravates the “interplatform and plane” contradictions in oil reservoirs to a certain extent. On this basis, the formulation of the composite system was screened by numerical simulation method. The oil displacement effect of the optimized formulation was evaluated by physical simulation method. The recovery rate increased more than 20% and the cost of chemical agent was reduced by 30%. The experimental results show that “low active agent, low alkali concentration, high polymer concentration” ternary complex system is an efficient and inexpensive oil displacement system.