聚合物驱相对渗透率曲线计算方法研究  

Calculating method for relative permeability curve of polymer flooding

作　　者：杨清彦[1,2] 李斌会[2] 周英芳[1] 费春光[2] 

机构地区：[1]中国地质大学能源学院,北京100083 [2]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《石油学报》2010年第2期294-297,301,共5页Acta Petrolei Sinica

基　　金：国家科技重大专项(2008ZX05000-042)"松辽盆地喇萨杏高含水油田提高采收率示范工程"项目资助

摘　　要：在修正Blake-Kozeny方程的基础之上推导出了非牛顿幂律型流体驱油的分流量方程、前缘运动方程,并根据推导的驱替前缘运动方程建立了视黏度与注水倍数关系以及平均含水饱和度与末端含水饱和度的关系式,考虑了聚合物溶液稠度系数H、幂律指数n、不可波及体积、岩石物性以及实验驱替速度等因素的影响,得到了新的聚合物驱相对渗透率计算方法。算例结果表明,油相的相对渗透率值与传统JBN方法计算的结果基本一致,而水相相对渗透率值则大于传统的JBN方法的计算结果,聚合物溶液的有效黏度在驱替过程中随着饱和度的增加先变小、后增大。The Blake-Kozeny equation was amended in this paper,and on the basis of this fractional flow equation and displacement front equation,and the relationship between visible viscosity and multiple of water injection,the average water saturation and the end water saturation were presented by considering of the influence of consistency coefficient of polymer solution H,power-law index n,inaccessible pore volume,the physical character of porous medium and flooding velocity in experiment,and then a new calculating method of relative permeability curve of polymer were presented.The result shows that by this new method,the relative permeability of oil phase was basically the same as that derived in JBN method,while the relative permeability of water was higher.In the flooding course,the effective viscosity of polymer solution firstly decreased,and then increased with the increasing of saturation rate.

关 键 词：Blake-Kozeny方程 相对渗透率 聚合物驱 不可波及体积 计算方法 

分 类 号：TE357.431[石油与天然气工程—油气田开发工程]