摘要
聚/表二元复合驱技术在油田中的应用逐渐普及,如何迚一步提高二元复合驱后采收程度成为亟待探究的内容。通过室内实验表明二元复合驱后剩余油依然达到40%以上,剩余油主要附存在驱替剂未波及的岩体内。通过继续注入驱替剂扩大波及体积以及封堵过水通道达到开采剩余油的目的,同时也探究了油井停止生产后油水重新分布对后采收程度的影响。实验结果表明采收程度在二元复合驱的基础上注入不同驱替剂能迚一步提高1.4%~5.6%,二元复合驱后采收程度主要受到聚合物的浓度、聚合物注入量影响,二元复合驱后是否静置一段时间对采收程度影响较小。
The application of binary combination flooding technology in oilfield is gradually popularized.How to further improve the recovery degree after binary combination flooding has become an urgent topic to be explored.The indoor experiments showed that residual oil after binary combination flooding was still above 40%,remaining oil mainly existed in the rock mass where was not swept by the displacement agent.In this experiment,the remaining oil was recovered by continuing to enlarge sweep volume and inject displacement agent to plug water channel,the effect of new oil-water distribution after the well shutdown on the recovery of reproduction was explored.The experimental results showed that the recovery degree was further improved by 1.4%~5.6%by injecting different displacement agents on the basis of binary composite flooding.The recovery degree after binary combination flooding was mainly affected by the polymer concentration and polymer injection amount,and the well shutdown time after the binary combination flooding had little influence on the recovery degree.
作者
周久穆
ZHOU Jiu-mu(School of Petroleum Engineering,Northeast Petroleum University,Daqing Heilongjiang 163318,China)
出处
《当代化工》
CAS
2020年第7期1388-1391,共4页
Contemporary Chemical Industry
关键词
二元复合驱
油水重新分布
表面活性剂
剩余油
Binary combination flooding
Redistribution of oil and water
Surfactant
Remaining oil
作者简介
周久穆(1994-),男,河北省唐山市人,硕士研究生,研究方向:油气田开发工程。E-mail:313161142@qq.com。
