考虑变井筒存储的凝析气压力动态分析  

Pressure behavior analysis of condensate gas reservoir in consideration of variable well-bore storage

作　　者：张艳玉[1] 聂法健[1] 李洪君[1] 李楼楼[1] 宋辉辉[1] 尉雪梅[1] 

机构地区：[1]中国石油大学,山东东营257061

出　　处：《水动力学研究与进展（A辑）》2006年第4期519-525,共7页Chinese Journal of Hydrodynamics

摘　　要：许多因素影响凝析气井压力动态,以前的试井分析方法虽然考虑了井筒存储的影响,但没有考虑变井筒存储的影响。然而由于凝析气自身的特性,井筒存储的变化对压力及压力导数动态有显著的影响,如不考虑此因素将会对凝析气压力动态分析结果产生较大的影响。文中针对凝析气井测试的特点,对Xu&Lee的凝析气井试井分析数学模型进行修正,建立了考虑表皮效应及变井筒存储的凝析气井试井解释数学模型,对其进行求解,分析研究了各参数对压力和压力导数动态的影响,并形成了新的理论图版。There are many factors affecting the pressure behavior of condensate gas well. Although the previous study considered the factor of well-bore storage, the variable well-bore storage did not be taken into consideration. However, in view of characteristic of condensate gas, variable well-bore storage has a marked influence on the pressure and derivative of pressure. If the function of variable well-bore storage is neglected, the result of the analysis will be not precise. This paper amends the Xu ＆ Lee＇s model and presents a new mathematical model in regard of the effects of skin, as well as variable well-bore storage. Through the solution of the new model, the paper further analyzed the impact of every parameter on the pressure and derivative of pressure, and the plots of typical pressure curves were given.

关 键 词：变井筒存储 凝析气 压力动态 压力导数 

分 类 号：TE3[石油与天然气工程—油气田开发工程]