摘要
由于凝析气井存在反凝析这一特殊现象,当井底压力低于露点压力时,原油从气井中析出,致使地层中流态从单相流变为多相流,并且随着时间的变化,凝析油饱和度是不断变化的。针对凝析气井压力恢复试井解释中存在的特殊问题,从变井筒储集、变表皮系数以及地层中相变三方面进行了分析,提出了新的认识,并应用到实际中,获得了符合地质油藏特征的试井参数。
When bottom-hole pressure is less than the dew-point,retrograde condensation occurs,the flowing characteristics in gas well will be greatly affected by the fluid separated out from the gas,and multiphase flow characteristics and other special factors such as changing wellborn storage,changing skin and changing phase etc.should be taken into account in well test analysis.Analyzing these special problems,this paper introduces some new understanding about these special problems of pressure buildup analysis in condensate gas well and its application.And the results accord with geological and actual condensate reservoir characteristics.
出处
《油气井测试》
2010年第1期28-30,共3页
Well Testing
关键词
凝析气井
变井筒储集
变表皮
复合模型
condensate gas well,changing wellborn storage,changing skin,composite model
