聚合物驱数学模型的若干问题  

Discussions on some problems about the mathematical model of polymer flooding

作　　者：王敬[1] 刘慧卿[1] 汪超锋 庞海洋 

机构地区：[1]中国石油大学石油工程教育部重点实验室,北京102249 [2]中国石油长城钻探公司,辽宁盘锦124010

出　　处：《石油学报》2011年第5期857-861,共5页Acta Petrolei Sinica

基　　金：国家科技重大专项(2008ZX05024-002-012和2008ZX05011-004)资助

摘　　要：随着聚合物驱理论、油田开发技术和化学工艺的发展,现有的聚合物驱数学模型在油藏开发模拟过程中暴露出一些问题,如驱油体系流变特性、渗流特性、物理化学特性,聚合物驱提高采收率机理、开发效果,原油物性,模拟计算等。依据渗流力学、物理化学、提高采收率及物理模拟实验理论讨论了现有聚合物驱数学模型在质量守恒方程、驱油体系表观黏度模型、聚合物驱残余油饱和度模型、水相渗透率下降系数、可及孔隙体积以及原油黏度模型中存在的问题,并提出了相应的解决方法和改进的模型。With advances in the polymer flooding theory,reservoir development technology and chemical techniques,current polymer flooding mathematical models have encountered some problems during the simulation process of reservoir development,such as rheological behaviors,seepage features and physicochemical characteristics of the flooding system,EOR mechanism and development effect of polymer flooding,oil properties,analog calculation,etc..Based on theories of seepage mechanics,physical chemistry,EOR and physical simulation experiments,we discussed some problems as current polymer flooding mathematical models were applied,which included the mass conservation equation,apparent viscosity model of the flooding system,residual-oil saturation model of polymer flooding,descending factor of water-phase permeability,accessible pore volume and crude viscosity model.Some relevant ways to solve problems and improve models were proposed,and they are expected to be of guiding importance in accurately and reasonably stimulating polymer flooding development techniques.

关 键 词：聚合物驱 数学模型 质量守恒方程 表观黏度 残余油饱和度 渗透率下降系数 可及孔隙体积 黏弹性稠油 

分 类 号：TE357[石油与天然气工程—油气田开发工程]