在注水油田开发中后期 ,注水管理越来越重要。如何减少井下产水量受到采油科技人员的日益重视。由加拿大工程研究中心开发出的井下分离技术给人们提供了技术手段 ,它可减少采出水的处理 ,又可进行经济合理地回注 ,达到增加采油量的目的。本文简要介绍了此项技术、应用实例、技术前景及其可应用的条件。 In the late development of waterflooding, waterflood management is more and more important. How to reduce the underground water production has been paid more and more attention by oil recovery technicians. The underground separation technology developed by the Engineering Research Center of Canada provides people with the technical means to reduce the production of produced water and to rebuild economically and reasonably so as to increase the oil production. This article briefly describes the technology, application examples, technical prospects and their applicable conditions.