裂缝-洞-井连通油藏模型及其Laplace空间解  

CONNECTION MODEL OF FRACTURE AND VUGS WITH WELLBORE AND LAPLACE SPACE SOLUTION

作　　者：李伟[1] 李顺初[1] 苏见朋[1] 

机构地区：[1]西华大学数学与计算机学院应用数学研究所

出　　处：《钻采工艺》2009年第5期47-49,共3页Drilling & Production Technology

摘　　要：根据裂缝-洞-井连通的三重介质油藏的渗流特征,建立了其试井解释的数学模型,利用Laplace变换方法,推导出了在外边界定压的条件下的无因次井底压力分布的Laplace空间解。对所求得的Laplace空间解实际应用中,经常是采用Laplace数值反演技术(Stehfest方法或Crump方法)来求得相应的实空间的数值解,可以满足试井分析中的应用需要。这对研究裂缝-洞-井连通油藏的渗流规律和试井分析都具有重要的指导意义。On the basis of the seepage properties of connection of fracture and vugs with wellbore,a well test interpretation model for a triple-medium reservoir composed of matrix,fracture and vugs was established.By using Laplace transform method,the Laplace space solution of dimensionless wellbore pressure distribution was got which in the condition of constant pressure outer boundary.In actual application,the real space solution was obtained by using the Laplace solution reversal development.It could meet the requirement of well test analysis.

关 键 词：裂缝-洞-井连通 LAPLACE空间解 定压外边界 微分方程 

分 类 号：TE319[石油与天然气工程—油气田开发工程]