Abstract: In this paper, the results of chemical flooding numerical simulation are presented. An improved chemical flood compositional model simulator is given out, which gives a more complete description in physical chemistry than others published previously[1、2、3、5]. In this paper,phase behavior model, cation exchange model, phase viscosities, residual satuaration and other parameters were included and their formations are improved. A sediment loss model was derived and introduced. The new concepts of effective flow saturation were given, and a new parameter of emulsification ratio is presented also. Thus, the behaviors of chemical flooding are deaconstrated by this simulator, a lot of investigation for one-dimensional flow are given, for example, the effect of sedimentant loss on recovery effeciency, etc. Results of investigation shows that this simulator is a better compositional one, which can be used in multidimensional problems.

摘要： 本文提出了一个更切合实际的化学驱油组分模型模拟器。模拟器中引进了相态模型、离子交换模型、相粘度、残余饱和度以及其它参数,给出了更接近表面活性剂驱油实际情况的有效流动孔隙度、有效流动饱和度等新的概念;改进了相粘度;建立了三离子交换模型、沉淀反应模型,并提出了乳化平衡速率(或增溶平衡速率)等新的参数,揭示了化学驱油的渗流规律。模型应用结果表明,用该模型模拟化学驱油是有效的,并与实验室所得结果相符,是一个具有应用价值的模型。

关键词: 化学驱, 组分模型, 物性参数, 模拟器