基于泡沫微观渗流特征的泡沫驱数学模型  

A Mathematical Model of Foam Flooding Based on Foam Microscopic Seepage Characteristics

作　　者：鹿腾[1] 李兆敏[1] 李敬[1] 李冉[1] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266555

出　　处：《计算物理》2012年第4期519-524,共6页Chinese Journal of Computational Physics

基　　金：国家自然科学基金重点项目(51034007);中央高校基本科研业务费专项资金(12CX06027A)资助项目

摘　　要：通过泡沫微观渗流实验可以看出泡沫在多孔介质内呈现两种渗流状态:流动泡沫和捕集泡沫.泡沫封堵实验可以看出泡沫封堵能力具有叠加性,当泡沫驱达到稳态后,岩心入口端泡沫封堵压力梯度小于岩心后段封堵压力梯度.基于泡沫总量平衡思想和泡沫性质表征模型,建立泡沫驱多组分数学模型.对该模型进行数值求解,模型采用全隐式方法求解.通过与泡沫封堵实验拟合,验证了模型的有效性,在此基础上研究了泡沫驱过程中不同位置处泡沫数目、压力、含水饱和度等泡沫驱渗流特征参数变化规律.Foam microscopic seepage experiments show that foam present two seepage states： Flowing foam and trapped foam. Foam plugging experiment show that foam plugging ability has accumulating effect, Plugging pressure gradient near core inlet is less than that of downstream of the core when foam flooding reaches steady state. A multi-component mathematical model characterizing foam flooding is established based on bubble population balance theory and foam properties. The model is solved numerically with fully implicit method. Validity of the model is verified with foam plugging experiment. Meanwhile, foam microscopic seepage characteristic parameters such as foam texture, pressure and aqueous phase saturation in foam flooding are studied.

关 键 词：泡沫驱 数学模型 数值模拟 微观渗流实验 封堵实验 

分 类 号：TE357[石油与天然气工程—油气田开发工程]