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.
出处
《钻采工艺》
CAS
北大核心
2009年第5期47-49,共3页
Drilling & Production Technology
关键词
裂缝-洞-井连通
LAPLACE空间解
定压外边界
微分方程
fracture and vugs with wellbore connection,Laplace space solution,constant pressure outer boundary,differential equation
