利用多孔介质计算机仿真模型研究粘性指进  

Viscous fingering research with the emulational model of porous media

作　　者：袁士宝[1] 雷光伦[1] 张建国[1] 陈月明[1] 陶军[1] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东东营257061

出　　处：《油气地质与采收率》2006年第5期59-61,共3页Petroleum Geology and Recovery Efficiency

摘　　要：为了研究多孔介质中粘性指进现象的发生和发展机理,基于随机理论建立了多孔介质计算机仿真模型。运用分形生长的理论在新建模型中进行粘性指进的模拟研究,分析了流体粘度差和非均质性对粘性指进的影响,讨论了驱替速度与粘性指进前缘分形维数之间的关系。分析结果表明,在多孔介质中,增加驱替流体粘度和降低驱替速度可控制粘性指进的发展。利用新建模型还可直观地观察到粘性指进产生的过程和剩余油的分布状态,实现了驱替过程的可视化。In order to study the occurring and developing mechanism of viscous fingering in porous media,computer emulational model of porous media is established based on stochastic theory. Fractal growth theory is applied to simulation of viscous fingering in a emulational model of porous media. The effect of viscosity difference and heterogeneity of fluid on the viscous fingering are analyzed. Also, the relationship between fractal dimension value of viscous fingering front and displacement velocity is discussed. The result is that the development of the viscous fingering in porous media can be controlled by increasing the viscosity of the displacement fluid and decreasing the displacement velocity. By the new model, the forming process of the viscous fingering and distribution of residual oil can be observed and visualized.

关 键 词：粘性指进 分形 仿真模型 多孔介质 

分 类 号：TE319[石油与天然气工程—油气田开发工程]