摘要
凝析气藏在井筒压力低于露点压力生产时,井筒附近出现两相流区,使得地层中析出的液体大大影响开发过程中的流动特性。本文在前人研究的基础上,针对传统凝析气藏渗流存在的主要问题,从微元法入手,建立了一种新的考虑油环带影响的凝析气藏渗流数学模型。通过拉氏变换并求解,获得考虑油环带影响的气藏气井井底压力响应数学模型,对凝析气藏气井井底压力响应的流动阶段和影响因素展开分析和讨论,并对某凝析气井的实际压力恢复资料进行了精细解释。
When the condensate gas pool is producing underthe dew-point pressure,the flowing characteristics will be great affected by the fluid separated out from formations,owing to the two-phrase flow near the well bore areas.In this paper,based on previous studies,in view of the main problems in traditional gas condensate reservoir,starting from the micro-element method,a flow Model considering the oil rim area in gas condensate reservoir is established.And Using by Laplace transform,we have gotten bottom hole pressure response model in three-zone composite gas reservoirs.Then we have analyzed and discussed the bottom hole pressure response factors and low regime in composite gas reservoirs.,and have carefully explained information on the actual pressure recovery of some condensate gas wells.This study has certain guiding significance to gas condensate reservoir on the fine interpretation of well test data.
出处
《新疆石油天然气》
CAS
2010年第3期54-57,70,共5页
Xinjiang Oil & Gas
关键词
凝析气藏
油环带
试井
condensate gas reservoir
the oil rim area
well test
