曹瑞成,李军辉,卢双舫,刘秋宏,陈学海,赵莹,胡寿梅

• 1:大庆油田有限责任公司海拉尔勘探开发指挥部
• 2:大庆石油学院地球科学学院

摘要(Abstract)：

以层序地层学理论为指导,通过对全凹陷范围内的地震、钻井、测井、岩芯以及古生物等资料的综合研究,建立了呼和湖凹陷白垩系层序地层格架。呼和湖凹陷白垩系划分为3个一级层序(TSq1—TSq3)、5个二级层序(Ⅰ—Ⅴ)、8个三级层序(Sq1—Sq8),并在层序格架内进行沉积相划分和沉积体系研究,确定该区主要发育冲积扇、扇三角洲、辫状河三角洲、湖底扇和湖泊沉积等沉积体系。冲积扇沉积体系主要分布在早期Sq1层序中;扇三角洲沉积体系主要分布在各层序的陡坡带,且在Sq2层序中尤为发育;辫状河三角洲沉积体系主要分布在Sq3、Sq4、Sq5层序的缓坡带;湖底扇沉积体系主要发育在Sq2和Sq4层序的洼陷带;沉积体系在平面与纵向上的演化受古构造与古地貌的控制,呼和湖凹陷南部沉积砂体为较有利的勘探区域。

关键词(KeyWords)： 呼和湖凹陷;白垩系;层序地层;沉积体系;沉积模式

Abstract:

Keywords:

基金项目(Foundation): 教育部新世纪优秀人才支持计划(NCET-04-0345)资助

作者(Author): 曹瑞成,李军辉,卢双舫,刘秋宏,陈学海,赵莹,胡寿梅

DOI: 10.19839/j.cnki.dcxzz.2011.02.005

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