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建立了化学驱互溶驱替组分输运数学模型，将模型中所需的物化参数描述为驱油剂浓度相关的函数。定义了“有效 驱替带长度”参数，来量化和分析吸附、扩散弥散、段塞尺寸和驱替速度等多因素对组分输运过程与结果的影响机理。分析 了大庆油田ＡＳＰ复合驱常用驱油剂（表面活性剂ＯＲＳ－４１和碱ＮａＯＨ）在孔隙输运过程中的有效性和持久性。研究成果不 仅可以为复合驱工程工艺方案设计和动态监测提供指导，而且可用于代替部分实验室流动实验和辅助机理研究。研制的 模拟软件的显著特点是对注化学剂段塞情况下的数学模型计算进行了十分巧妙的边界条件处理，用有限差分的预测－校正 格式使计算结果更为准确可靠，其可靠性可用相应的物理模拟（流动）实验进行验证。
The mathematical model of transport of chemical flooding and displacing components was established. The physical and chemical parameters required in the model were described as functions related to the concentration of flooding agent. The parameters of “effective displacement zone length” are defined to quantify and analyze the influence mechanism of adsorption, diffusion dispersion, slug size and displacement velocity on the transport process and the result of the components. The effectiveness and persistence of the commonly used oil displacement agents (surfactant ORS-41 and alkali NaOH) of ASP composite flooding in pore transport in Daqing Oilfield were analyzed. The research results can not only provide guidance for the design and dynamic monitoring of complex flooding engineering process schemes, but also can be used to replace part of the laboratory flow experiments and auxiliary mechanisms. The notable feature of the developed simulation software is that it deals with the ingenious boundary conditions for the calculation of the mathematical model in case of chemical slug injection. The prediction and correction of the finite difference make the calculation more accurate and reliable, Physical simulation (flow) experiment to verify.