摘要
在循环注气凝析气井产能试井过程中,常会发生反凝析现象,导致凝析油在井底造成阻塞。在气井产能测试时,主要表现出常规二项式产能测试曲线为负斜率。为准确进行产能测试,将阻塞表皮系数理论与常规二项式产能方程理论相结合,获得了考虑阻塞效应前提下,相对准确的凝析气井产能试井方法。实测分析表明:该方法在产量校正基础上,可有效解决循环凝析气井产能试井曲线斜率为负的问题,并能正确获得气井产能。
Retrograde condensate phenomenon often occurs during deliverability tests in gas condensate wells with cyclic gas injection,causing blocking at bottom hole by condensate oil,which is reflected as negative slope on conventional binomial deliverability test curve. The theory of blocking skin factor was integrated with conventional binomial deliverability equation to obtain a more accurate method of gas condensate well deliverability test under the premise of considering blocking effect. Measurement analysis indicates that this method can effectively solve the problem of negative slope on deliverability test curve and accurately predict condensate gas well deliverability on the basis of production calibration.
出处
《特种油气藏》
CAS
CSCD
北大核心
2012年第4期81-83,154-155,共3页
Special Oil & Gas Reservoirs
基金
国家重大科技专项"大型油气田及煤层气开发"子课题"塔里木盆地库车前陆冲断带油气勘探开发示范工程"(2008ZX05046)
关键词
凝析气
产量校正
产能试井
反凝析现象
阻塞表皮系数
凝析油阻塞
gas condensate
production calibration
deliverability test
retrograde condensate phenomenon
blocking skin factor
blocking by condensate oil
