摘要
大庆油田随着主力油层聚合物驱开发潜力的减小,需要在二类油层开展注聚和三元复合驱以实现产量接替。在矿场试验研究的基础上,确定了萨中二类油层三元复合驱井网井距、注入参数,对其见效特征有了明确认识,并形成了二类油层三元复合驱配套的增产、增注措施技术。实践表明,二类油层三元复合驱是可行的,可提高采收率20个百分点以上,为油田可持续发展提供更有效的接替技术支撑。
It is known that ASP flooding can not only expand the swept volume but enhance the oil displacement recovery as well. Since the research of ASP flooding developed in Daqing oilfield, the matching technology of ASP flooding has been formed. With the decreasing potential of polymer flooding in major reservoirs, polymer flooding and ASP flooding have been adopted to realize the production of the remaining reservoirs. Based on the research of field testing, the proper well pattern and injection parameters have been determined, which, therefore, have a clear understanding of its effective characteristics and formed matching technology to enhance the production. The application results indicate the ASP flooding of class-II oil layers is feasible and can enhance the oil recovery by 20%, providing technical support for the sustainable development of oilfield.
出处
《石油地质与工程》
CAS
2012年第1期112-115,9,共5页
Petroleum Geology and Engineering
关键词
萨中开发区
二类油层
三元复合驱
试验效果
Sazhong development area
class-II oil layers
ASP flooding
experimental effect
