松辽盆地中部含油组合高精度层序地层格架分析HIGH-RESOLUTION SEQUENCE STRATIGRAPHIC FRAMEWORK FOR THE MIDDLE OIL-BEARING BEDS IN THE SONGLIAO BASIN
辛仁臣,张翼,张春卉,郭涛,张雪辉
摘要(Abstract)：
上白垩统青山口组、姚家组和嫩江组一段是松辽盆地最主要的含油层系,习惯上称之为中部含油组合。地震、测井、录井、岩芯及古生物资料综合研究表明,中部含油组合由超层序SSQq-qn的高水位时期和湖泊萎缩时期形成的青山口组二三段和SSQy-n的低水位时期和湖泊扩张时期形成的姚家组和嫩江组一段组成。中部含油组合内部的姚家组底界为超层序界面,其顶底分别为超层序SSQq-qn和SSQy-n的密集段。中央坳陷区中部含油组合发育的地层较全。青一段和泉头组四段顶部组成1个三级层序,包含2个四级层序;青二三段由3个三级层序构成,又可划分为5个四级层序;姚家组由2个三级层序组成,并分别对应1个四级层序;嫩江组一段相当于1个三级层序,其中可划分为3个四级层序。不同级别的层序在古生物、岩性—测井曲线和地震反射资料上都有特征的响应。
关键词(KeyWords)： 层序格架;四级层序;中部含油组合;青山口组;姚家组;嫩江组;上白垩统;松辽盆地
基金项目(Foundation): 国家自然科学基金(No.40272057)资助
作者(Author): 辛仁臣,张翼,张春卉,郭涛,张雪辉
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