节点文献
珠江口盆地西部珠江组潮流砂脊的分布、形态和水动力机制
Distribution,geometry and hydrodynamic mechanism of tidal sand ridges in the Zhujiang Formation,the western Zhujiangkou Basin
【摘要】 综合地震、钻井及测井资料,运用层序地层学理论,研究认为珠江口盆地西部珠江组一段上部泥质粉砂岩低阻油层砂体为潮流砂脊砂体,对潮流砂脊的形态与平面展布特征进行了研究,探讨了潮流砂脊的水动力特点与形成机制,并在珠江组一段上部识别出四期水道,分析了潮流水道的分布及井震特征。指出水道内潮流砂脊构造-岩性圈闭和水道侧向遮挡构造-岩性圈闭两种有利的潮流砂脊隐蔽圈闭。
【Abstract】 An integration of seismic,drilling and logging data with sequence stratigraphic theories reveals that the oil-bearing argillaceous siltstones of low-resistivity at the upper part of the first member of the Zhujiang Formation in western Zhujiangkou Basin are tidal sand ridges.This paper studies their geometry and planar distribution,and discusses their hydrodynamic features and forming mechanism.Four stages of water channels are identified in the upper part of the first member of the Zhujiang Formation,and their distribution as well as logging and seismic characteristics are also analyzed.It is suggested that there are two kinds of potential subtle traps:intra-channel tidal sand ridge structural-stratigraphic traps and channel lateral-sealing structural-stratigraphic traps.
【Key words】 low-resistivity oil layer; tidal sand ridge; Zhujiang Formation; Wenchang Sag; Zhujiangkou Basin;
- 【文献出处】 石油与天然气地质 ,Oil & Gas Geology , 编辑部邮箱 ,2010年05期
- 【分类号】P618.13
- 【被引频次】6
- 【下载频次】259