深水湖盆层序地层单元识别方法——以Muglad盆地Fula坳陷为例  

Identification of sequence reservoir section in deep-water lake basins——Taking Fula depression in Muglad basin as an example

作　　者：王林[1] 姜在兴[1] 冯磊[1] 潘校华 李志 

机构地区：[1]中国地质大学能源学院,北京100083 [2]中国石油国际勘探公司海外研究中心,北京100083

出　　处：《大庆石油地质与开发》2007年第6期24-27,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金(40672078)资助项目

摘　　要：以Muglad盆地Fula坳陷的Abu Gabra组上段为例,探讨了深水湖盆层序地层单元的识别方法。地震反射终止类型和地震相分析有助于划分大级别的层序界面,对地震资料的时频分析指导了三级层序及其体系域的识别,放射性测井资料的应用则可在钻井剖面上较精确地确定各级层序地层单元的界面。最终在Abu Gabra组上段划分了4个三级层序,其中层序二为三分层序,包括低位体系域、湖侵体系域和高位体系域,其他均为TR层序,分为湖侵体系域和湖退体系域。By taking the upper member of Abu Gabra Formation in Fula depression of Muglad basin as an example, methods for identifying sequence section of reservoir in deep - water basins are discussed. Analyses of seismic reflection termination forms and seismic facies can be used to identify high - leveled sequence boundaries. Seismic time - frequency analyses can be applied to the identification of third - level sequences and other system domains. The application of nuclear logging curves can be used to accurately determine boundaries of sequence reservoir sections. Finally, the upper member of Abu Gabra Formation is divided into four third - level sequences, and Sequence 2 is subdivided into three parts as low order system domain, lake transgressive system doamin and high order system domain, and the other sequences are all TR sequences which can be subdivided into lake transgressive system domain and lake regressive system doamin.

关 键 词：深水沉积 层序地层学 时频分析 放射性测井 Fula坳陷 

分 类 号：TE121[石油与天然气工程—油气勘探]