摘要
为了解决油田内、油田间、洼陷间、凹陷间的地层划分和对比问题,针对地震资料纵向分辨率低和高分辨率层序地层对比难以在平面上进行连续追踪的缺点,提出了井震约束下的高分辨率层序地层学对比方法。该方法共包括5步:进行研究区地震反射界面的研究;建立地质分层与地震反射界面的关系;地震层序的划分及地震层序对比;在井震约束下进行层序划分和长期基准面旋回识别;进行中期和短期基准面旋回的识别。在南堡凹陷高尚堡、柳赞、唐海3个油田进行了应用并取得了较好的效果,找出了3个油田间地层的对应关系,实现了3个油田间大层和小层的统一划分。
In order to deal with stratigraphic division and correlation within a oilfield or among oilfields,sags and depressions,the method of high resolution sequence stratigraphic correlation constrained by well-seismic data was put forward so as to overcome the shortcomings of the poor vertical resolution of seismic data and the difficulty of successive pursuit of high resolution sequence in laterally.The method can be divided into 5 steps:researching seismic reflective boundary in the studied area,establishing the relation between geology laminate and seismic reflective boundary,classifying and correlating seismic sequence, identifying sequence and long-term base level cycles,identifying medium-term and short-term base level cycles.Good result was achieved after the application in the Gaoshangpu,Liuzan and Tanghai oilfields in the Nanpu Depression.The correspondent relationships were found and unified strata classification among the fields was achieved.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2009年第3期61-64,共4页
Petroleum Geology and Recovery Efficiency
关键词
井震约束
高分辨率层序地层
河流相
地层对比
基准面旋回
the controlling of logs and seismic data
high resolution sequence stratigraphy
river facies
stratigraphic correlation
base level cycle
