凝析气藏井筒周围凝析液析出的动态分析  

THE DYNAMIC ANALYSIS FOR CONDENSATE BANKING AROUND WELLBORE IN CONDENSATE GAS RESERVOIR

作　　者：朱炬辉[1] 胡永全[1] 赵金洲[1] 张矿生[1] 陈凯[1] 

机构地区：[1]西南石油学院

出　　处：《天然气勘探与开发》2004年第1期33-35,共3页Natural Gas Exploration and Development

基　　金：中石化集团公司项目"深层凝析气藏评价及储层改造攻关技术"内容之一

摘　　要：文章定义了流度函数 ,提出了应用凝析液析出的动力学方法 ,模拟凝析气井随着时间变化天然气的重组分的凝析变化的一种新的分析方法。在低渗透凝析气藏开发中 ,一旦油藏以低于露点的井底流压生产 ,各个组分都存在一个完全稳定的状态 ;井的生产压差与产量变化将显著的影响凝析液在地层析出和聚积 ,且在井筒附近更严重 ;同时 ,不可能靠关井来阻止凝析油的析出 。This paper makes a definition for mobility function and raises a new way to simulate heavy components banking varing with time by using the dynamic method of condensate banking. In the development of condensate gas reservoir with low permeability, When the reservoir producing at a bottomhole pressure under dew point, each component has a full-steady state; Variation of producing pressure drop and production rate will strikingly affect condensate banking and collecting in the formation, this phenomenon is more serious around the wellbore. Condensate banking can't be prevented by shut in, for this way will only lead to more serious banking.

关 键 词：凝析气藏 井筒 凝析液 流度函数 动力学 时间 天然气 

分 类 号：TE373[石油与天然气工程—油气田开发工程]