摘要
聚合物驱油是水驱后进一步提高采收率的一项有效技术。在驱替过程中,剖面返转现象会影响聚驱开发效果,不利于采收率的提高,还会进一步加剧层间矛盾,加大开发难度。因此研究剖面返转形成的机理和相关变化规律对提高聚合物驱采收率具有重要意义。本文综述了剖面返转形成的机理,影响因素以及变化规律,并对原因进行了分析,为油田生产提出了建议。
Polymer flooding can efficiently improve recovery efficiency after applying water flooding method.During polymer flooding,profile reversal severely affects the oil development effect,which is unfavorable for increase of recovery efficiency,and even further worsen interlayer contradiction,bringing about difficulty in subsequent development.Therefore,it is of utmost importance to investigate into the mechanism and variation of profile reversal during polymer flooding.This paper summarized mechanism and influence factors of profile reversal,and meanwhile,analyzed the causes and proposed suggestion for it.
出处
《精细与专用化学品》
CAS
2016年第2期37-40,共4页
Fine and Specialty Chemicals
关键词
聚合物驱
剖面返转
采收率
层间矛盾
机理
影响因素
polymer flooding
profile reversal
recovery efficiency
interlayer contradiction
mechanism
influence factors
