考虑毛细压差后多孔介质渗透率的分形模型  

Study of the Effect of Capillary Pressure on Permeability

作　　者：罗慧[1] 裴培[1] 刘艳军[1] 

机构地区：[1]武汉科技学院数理系,湖北武汉430073

出　　处：《三明学院学报》2007年第4期395-399,共5页Journal of Sanming University

摘　　要：建立了多孔介质渗透率的分形模型,并分析了毛细压差对渗透率的影响。将分析结果与实验数据相比较,发现模型与实验吻合得很好。当孔隙度小于0.35时,毛细压差对渗透率的影响非常大,不能忽略;当孔隙率较大时,毛细压差对渗透率的影响并不大。A fractal permeability model is derived which accounts for the capillary pressure, and the permeability contribution from the capillary pressure is analyzed. The predicted permeability is compared with the available experimental data, and good agreement is found between the present model predictions and available experimental data. The result show that at low porosity （〈0. 35）, the capillary pressure has the significant influence on the total permeability, and the capillary pressure effect cannot be neglected. But at high porosity （〉0.35）, the effect of capillary pressure on permeability is insignificant.

关 键 词：渗透率 细压差 多孔介质 分形 

分 类 号：O469[理学—凝聚态物理]