复合双孔介质油藏中压力分布的相似结构  

SIMILAR STRUCTURE OF PRESSURE DISTRIBUTION IN DOUBLE POROSITY COMPOSITE RESERVOIR

作　　者：郑鹏社[1] 李顺初[1] 朱维兵[1] 

机构地区：[1]西华大学

出　　处：《钻采工艺》2008年第4期80-81,3,共2页Drilling & Production Technology

基　　金：国家"九五"重点攻关项目(编号:96-111-03-01-07)

摘　　要：文章首先建立了复合双孔介质油藏在考虑井筒储集和表皮效应和三种外边界(无穷大、定压、封闭)条件下的试井分析模型;利用Laplace变换,求得了其在Laplace空间中的无量纲压力分布的精确解;经过分析其解式的特征,发现了它们在三种外边界下的解式之间具有相似结构,并作了进一步应用的讨论。这项研究,可以极大地方便试井分析的软件编制,也是对石油渗流理论的进一步发展。The mathematic model for well test analysis of perfectly describing the double porosity composite sealed reservoir with the bottom-hole storage and the skin effects and the three kinds of outer boundary conditions (infinite boundary, constant pressure outer boundary, closed boundary) was established. By using the Laplace transform method, the solution of the dimensionless pressure in Laplace space was got. The similar structure of the solution's form in the three kinds of outer boundary conditions was discovered passing through analysis its characteristics. Furthermore, more discussion was taken. The research was convenient to design well test analysis program, and it was also a deep development of flow theory of fluids in porous media.

关 键 词：复合双孔介质油藏 井筒储集 表皮效应 外边界条件 LAPLACE空间解 相似结构 

分 类 号：TE353[石油与天然气工程—油气田开发工程]