石油与天然气地质 ›› 2002, Vol. 23 ›› Issue (2): 166-169,182.doi: 10.11743/ogg20020214

• 油气空间 • 上一篇    下一篇

查干凹陷下白垩统层序地层格架与演化

郭彦如1,2, 于均民2, 樊太亮1   

  1. 1. 中国地质大学, 北京, 100083;
    2. 中国石油勘探开发研究院西北分院, 甘肃兰州, 730020
  • 收稿日期:2001-08-29 出版日期:2002-06-25 发布日期:2012-01-16

EVOLUTION AND SEQUENCE STRATIGRAPHIC FRAMEWORK OF LOWER CRETACEOUS IN CHAGAN DEPRESSION

Guo Yanru1,2, Yu Junmin2, Fan Tailiang 1   

  1. 1. Earth Resource Faculty, China University of Geosciences, Beijing;
    2. Northwest Branch, Research Institute of Petroleum Exploration & Development, CNPC, Lanzhou, Gansu
  • Received:2001-08-29 Online:2002-06-25 Published:2012-01-16

PDF (PC)

823

被引次数

70

摘要：

查干凹陷位于银额盆地东北角,依据地震、岩性、古生物、地化及测井等资料,其白垩系可划分出 1个一级层序、2个二级及 7个三级层序。巴音戈壁组一、二段沉积时期形成层序Ⅰ,Ⅱ;苏红图组沉积时期,形成层序Ⅲ,Ⅳ,Ⅴ;银根组沉积时期形成层序Ⅵ,Ⅶ。查干凹陷已有钻井显示,58%的油气层段分布于低位体系域中,30%的分布于高位体系域,12%的分布在湖侵体系域。

关键词: 下白垩统, 层序地层, 隐蔽油气藏, 查干凹陷

Abstract:

Lower Cretaceous of Chagan depression,situated in the northwest corner of YinE basin,can be divided into one first-order sequence;two second-order sequences and seven third-order sequences according to its data of seism,lithology,palaeobiography, geochemistry and well-logging etc.Ⅰ annd Ⅱ order sequences were shaped during Ⅰ and Ⅱ member deposition of Bayin Gebi Formation,Ⅲ,Ⅳ and Ⅴ-order sequences were formed in the deposition of Suhongtu Formation while Ⅵ and Ⅶ-order sequences formed in the deposition of Yingen Formation.Well-logging data collected from Chagan depression indicate that 58% oil and gas bearing-formation are distributed in lowstand system tracts,30% in highstand system tracts and 12% in lake ingression system tracts.

Key words: Lower Cretaceous, sequence stratigraphy, subtle reservoir, Chagan depression

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