凝析气井气窜后的产能特征变化及调整措施效果评价  

THE EFFECT OF GAS BREAKTHROUGH ON PRODUCTIVITY FEATURE OF CONDENSATE GAS WELL

作　　者：刘东[1] 张久存[1] 张明亮[1] 

机构地区：[1]中国石油塔里木油田公司天然气事业部,新疆库尔勒841000

出　　处：《新疆石油天然气》2008年第4期81-84,共4页Xinjiang Oil & Gas

基　　金：国家"十五"重点科技攻关项目(2001BA605A02)成果部分研究内容

摘　　要：在凝析气藏循环注气驱替过程中,受储集层非均质性影响,注入干气易于流过高渗透带或天然裂缝而发生过早气窜。文章分析牙哈凝析气田循环注气开发的现场资料,结合数值模拟方法,阐述了注入气突破至采气井井底后,采气井井流物组分及相态的变化规律,并研究了气窜发生后气井产能的变化特征,总结了凝析气井气窜后的治理措施及措施效果评价[1]。Under the effect of the reservior heterogeneity,injected gas is easy to flow through high permeabilityzone or natural fracture and cause the premature gas breakthrough during cyclic gas injection displacement ofcondensate gas reservoir. In this paper,it will be probed into how to delay the gas breakthrough, and modify theinjection and production relationship after the gas breakthrough, through the discussion of cyclic gas injectiondevelopment of Yaha gasfield, composition of well fluid and law of phase changement after the injected gas driveand breakthrough to the downhole and difference between the open flow capacity of binomial productivity and theactual capacity changement.

关 键 词：高渗透带 混相驱 注入体积 井流物 流压 反凝析 

分 类 号：TE372[石油与天然气工程—油气田开发工程]