【摘要】 基于中国石油天然气股份有限公司所属油田目前所处的开发阶段、资源基础、地面系统现状和原油采收率水平等,分析了中国石油所属油田面临的开发形势,提出老油田二次开发的概念。二次开发的对象必须符合3个条件:①油田服役年限在20年以上(稠油油田服役年限在12年以上);②标定的油田可采储量采出程度在70%以上;③油田综合含水率达到85%以上。二次开发是项系统工程,"十一五"以来中国石油在油藏研究、钻采工程、地面系统等方面形成了特色技术。按照"整体部署,分步实施,试点先行"的实施原则,中国石油老油田原油采收率可提高10%~20%。中国石油老油田二次开发前景广阔,实施二次开发工程是中国石油老油田开发的必然选择。更多还原

【Abstract】 This paper presents a new concept of redevelopment of mature fields and defines its object on the basis of the PetroChina’s field development status analysis,including development stage,remaining reserves,surface engineering,and average oil recovery factor.For mature field redevelopment,three conditions must be met.Firstly,the field producing is over 20 years(heavy oil fields over 12 years);secondly,the recovery factor of recoverable reserves is up to 70%;thirdly,the field water cut is up to 85%.PetroChina has developed special technologies and technical know-how in reservoir study,drilling and production engineering,and surface engineering since the national 11th five-year plan.Mature field redevelopment is complex system engineering and should follow three principles,which are integrative deployment,staged implementation,and pilot study first.Redevelopment of mature oilfields is a necessary way and the expected increase of oil recovery factor ranges from 10% to 20%.更多还原