黏弹性聚合物溶液渗流数学模型  

Mathematical model of viscous-elastic polymer solution seepage

作　　者：曹仁义[1] 程林松[1] 郝炳英[1] 高海红[1] 姚大伟[1] 

机构地区：[1]中国石油大学(北京)石油天然气工程学院,北京102249

出　　处：《西安石油大学学报（自然科学版）》2007年第2期107-109,共3页Journal of Xi’an Shiyou University（Natural Science Edition）

摘　　要：分析聚合物溶液在简化孔喉模型中的流动情况,建立了综合考虑聚合物溶液特性和多孔介质特征的黏弹性本构模型,并在此基础上建立了聚合物溶液不稳定渗流数学模型,并利用数值方法求解.通过实例计算,对聚合物溶液的特征时间、稠度系数、幂律指数、孔隙因子(喉道长度与喉道直径之比)和注入速度对注入压力的影响进行了分析,绘制了相应的理论图版.结果表明:注入压力随聚合物溶液特征时间、稠度系数和注入速度的增大而增大,随幂律指数和孔隙因子的增大而减小.Based on the analysis of polymer solution flowing in throat model,the viscous-elastic constitutive model of the polymer solution seepage is established in which the characteristics of the polymer solution and porous media are all considered.The mathematical model of the unsteady seepage of the polymer solution is established according to the constitutive model,and the mathematical model is solved using numerical method.The influences of relaxation time,consistency coefficient,power law index,pore factor and injection rate on pressure performance are analyzed,and the corresponding typical curves are drawn.The research results show that,the injection pressure increases with the increase of relaxation time,consistency coefficient and injection rate,and decreases with the increase of power law index and porosity factor.

关 键 词：聚合物驱 黏弹性本构模型 渗流数学模型 理论图版 

分 类 号：TE357.431[石油与天然气工程—油气田开发工程]