流体在多孔介质仿真模型内的粘性指进研究  

Research on viscous fingering of fluid in simulated models with porous media

作　　者：蒋海岩[1] 袁士宝[1] 陶军[1] 

机构地区：[1]中国石油大学,山东东营257061

出　　处：《大庆石油地质与开发》2007年第2期83-86,共4页Petroleum Geology & Oilfield Development in Daqing

摘　　要：为了考查多孔介质的性质对粘性指进的影响,基于随机理论建立了多孔介质的仿真模型,运用分形生长的DLA方法在多孔介质仿真模型中进行粘性指进模拟,分析了粘度差和非均质性对粘性指进的影响,讨论了孔隙分维和驱替速度等宏观参数对粘性指进分维值之间的关系。分析结果认为,流体间的粘度差是产生粘性指进的内在因素,多孔介质的非均质性是诱发粘性指进现象的外在因素。通过控制流体间的粘度差和驱替速度可以抑制粘性指进的发生。For research the effect of porous media on viscous fingering, simulation model with porous media is established based on stochastic theory. Utilized fractal growth DLA method, viscous fingering simulation is performed in porous media simulation model. The effects of viscosity difference and heterogeneity on viscous fingering are analyzed, and the relationship between fractal dimension value of viscous fingering and some macro parameters, such as porosity fractal dimension and displacing velocity, are discussed in this paper. The result shows that viscosity difference between fluids is intrinsic factor that causes viscous fingering and porous media heterogeneity is extrinsic factor. So viscous fingering can be controlled by viscous difference between fluids and displacing velocity.

关 键 词：多孔介质 仿真 粘性指进 分形 

分 类 号：TE319[石油与天然气工程—油气田开发工程]