摘要
建立了沉积岩孔隙结构的二维分形模型,引入了描述沉积岩孔隙结构的参数分布分维D和半径比γ,并利用该模型对大粘滞比情形下沉积岩中的两相流驱替进行了计算机模拟,结果表明粘滞指进型与结构参数存在密切关系.当半径比较小而分布分维较大时,指进型明显地呈十字形生长,而当半径比较大而分布分维较小时,指进型表现为完全无序的分支结构.通过数据拟合,得到了指进型分维与结构参数的表达式.
A fractal two dimensional model of sedimentary rock with two structural parameters is presented. The simulations of two phase flow at a high viscous ratio in sedimentary rock show that the patterns of viscous fingering are closely related to the structural parameters. For a large value of fractal dimension of distribution and a small value of radius ratio, the fingering is characterized by dendrite growing along the coordinate axes.
出处
《华中理工大学学报》
CSCD
北大核心
1998年第A02期62-64,共3页
Journal of Huazhong University of Science and Technology
关键词
沉积岩
分形模型
采油
孔隙结构
两相流驱替
sedimentary rock
fractal model
structural parameter
viscous fingering