摘要
文章以我国东部小型箕状断陷湖盆的典型代表——南襄盆地为例,通过层序地层学研究,在第三系核桃园组地层中识别出4个三级层序。从地震反射结构、沉积结构、沉积序列等方面入手对该湖盆缓坡带的沉积体系特征、沉积模式进行了探讨,进而总结出缓坡带的2种沉积体系,提出与沉积体系相关的5种油气成藏模式。
Four third grade sequences were identified in the Hetaoyuan Formation of lower Tertiary in the north slop of Biyang depression through sequence stratigraphy research. A corrasion valley - lowstand fan sedimentary system was rec- ognized in the low system tracts of sequence I1 and 11I. The deposits in the corrasion valley had specific ＇seismic reflection structure, sedimentary structure and depositional sequence. This paper presents the sedimentary mode of ramp fan delta plain - corrasion valley - topogenetic low fan sedimentary system. There are 4 kinds of oil and gas reservoirs related with this sequence mode.
出处
《九江学院学报》
2009年第3期1-5,共5页
JOurnal of Jiujiang University :Social Science Edition
基金
中国石油化工股份有限公司委托课题"中国东部盆地高精度层序地层学及岩性油气藏勘探研究"资助
关键词
断陷湖盆
缓坡带
沉积体系
油气成藏
Nanxiang Basin
slope zone
sidimentary system
oil and gas reservoir
