摘要
针对复杂河流相油藏在注水开发过程中,由于点坝侧积层的存在而造成油藏流体分布规律复杂、油田中后期挖潜困难的情况,在陆地油田精细储层解剖技术的基础上,结合海上油田特点,借助于现代沉积模式研究、水平井资料、地震精细解释等手段,利用对子井、水平井、密闭取心井等资料,半定量地描述了侧积层的产状,并通过机理模型研究了曲流河侧积层对调整井部署的影响,在油田实际生产中得到验证,指导部署调整井60口,合计日增油1 450 m3/d,提高采收率4.9%,有效指导了海上油田开发中后期的调整挖潜,对海上同类油田的开发具有积极的借鉴意义。
For a complex fluvial reservoir,the lateral accretion of point bar may lead to complicated distribution of reservoir fluids and difficult potential tapping in middle and late stages of development. On the basis of fine reservoir characterization for onshore oilfields,this paper semi-quantitatively analyzes the lateral accretion attitude in offshore oilfields using data of laterals,horizontal wells and sealed coring wells,by means of modern sedimentation model and fine seismic interpretation. Moreover,the mechanism model is used to identify the effects of meandering river lateral accretion on arrangement of infill wells. The practical application in 60 infill wells has proved that oil production increases by 1 450 m3/ d and the recovery rate rises by 4. 9%. Accordingly,this study is of great positive significance for adjustment and potential tapping in middle and late stages of offshore oilfield development as well as the development of similar offshore oilfields.
出处
《特种油气藏》
CAS
CSCD
北大核心
2013年第6期89-92,146,共4页
Special Oil & Gas Reservoirs
基金
国家科技重大专项"海上油田丛式井网整体加密及综合调整油藏工程技术应用研究"部分研究成果(2011ZX05024-002-007)
关键词
曲流河沉积微相
侧积层
数值模拟
点砂坝
油藏描述
调整井部署
挖潜
meandering river sedimentary microfacies
lateral accretion
numerical simulation
point bar
reservoir description
infill wells
potential tapping
