摘要
龙618区块是位于辽河油田的一个常规稠油区块,为了解决原油粘度高,常规注水开发效率低以及地层压力下降快等问题,进行室内岩心实验,研究化学驱注入方式对驱油效果的影响。结果表明:前置高浓度小段塞后续低浓度大段塞的驱油效果好于前置高浓度大段塞后续低浓度小段塞的驱油效果,并且二元主段塞注入前注入少量凝胶段塞可以调高采收率。
In order to solve the problems such as high crude oil viscosity, low efficiency of conventional water injection and fast formation pressure drop, Long 618 block is a conventional heavy oil block located in Liaohe oil field. The core experiment is carried out to study the effect of injection method on oil displacement efficiency. The results show that the oil displacement effect of the low-concentration large slug is better than that of the low-concentration slug with high concentration and large slug, and the injection of small amount of gel slugs can increase oil recovery.
作者
闫文华
吴东莹
汪宁宇
YAN Wen-hun WU Dong-ying WANG Ning-yu(Key Laboratory of Enhanced Oil Recovery, Ministry of Education, Ministry of Education, Northeast Petroleum University, Daqing 163318, China)
出处
《化学工程师》
CAS
2017年第4期41-43,共3页
Chemical Engineer
基金
中国石油科技创新基金"特高含水期二元驱多段赛等流度驱油方法研究"(2013D-5006-0203)
关键词
稠油
化学驱
注入方式
段塞
采收率
heavy oil
chemical flooding
injection method
slug
recovery ratio
