在封闭地层中非牛顿幂率流体压降曲线分析  

Analysis for the Curve of Pressure Drawdown about the Non-Newtonian Power-Law Fluid in Bounded Reservoirs

作　　者：王晓冬[1] 王雅茹[2] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中石化勘探开发研究院,北京100083

出　　处：《油气井测试》2008年第5期11-13,16,共4页Well Testing

摘　　要：研究非牛顿流体压降特征有助于提高聚合物驱油或常规稠油开采效果。用Laplace变换方法给出了封闭地层中非牛顿幂率流体不稳定渗流数学模型的解析解式,通过渐近分析给出了比较完整的压降流动期表现公式,其中晚期拟稳态表达式是一个新的结果,而通过流动期渐近公式可以对非牛顿幂率流体压降测试数据进行简洁分析。给出了具体应用方法和步骤。It is functional to improve either polymer flooding or custom heavy oil recovery that to identify pressure drawdown characteristics of non-Newtonian fluids.The paper presents an analytical solution to the mathematical model describing the non-Newtonian power-law fluid flow in a circular bounded reservoir by Laplace transformations,and asymptotic formulas are obtained to express the flow regimes during the pressure drawdown process.Especially,in the formulas there is a new expression depict the last pseudo-steady state of non-Newtonian power-law fluid transient flow in the bounded reservoir.The formulas can be used to make a concise interpretation to the well-test data while two practically applied procedures about them are shown detailed in the paper.

关 键 词：非牛顿幂率流体 压力降落试井 井筒存储 表皮效应 流动期 

分 类 号：TE353[石油与天然气工程—油气田开发工程] O373[理学—流体力学]