石油与天然气地质 ›› 2010, Vol. 31 ›› Issue (5): 542-551.doi: 10.11743/ogg20100503

• 石油与天然气地质 • 上一篇    下一篇

冀中坳陷淀南地区沙河街组一段层序地层及沉积演化

  

  • 出版日期:2010-10-28 发布日期:2010-12-10
  • 作者简介:赵贤正（1962—），男，教授级高级工程师，油气勘探。
  • 基金资助:

    国家科技重大专项（2009ZX05009-002）。

Sequence stratigraphy and sedim entary evolution of Es 1 in D iannan area of the Jizhong Depression

  • Online:2010-10-28 Published:2010-12-10

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摘要：

综合利用岩心、钻井、测井以及地震资料，对冀中坳陷淀南地区沙河街组一段进行了层序地层划分，建立了以体系域为单元的等时层序地层对比格架，将沙河街组一段划分为一个三级层序，并以岩性、岩相以及地层叠置样式的变化进一步细分出低位、湖侵和高位体系域。在层序地层格架的基础上，分析了沙河街组一段沉积相的构成、演化和分布规律，认为沙河街组一段主要发育三角洲相和湖泊相沉积。

关键词: 沙河街组一段, 层序地层, 沉积体系, 淀南地区, 冀中坳陷

Abstract:

Based on an integration of core，drilling，logging and seism ic data，the paper performs sequence stratigraphic division of the firstmember of the Eogene Shahejie Formation（Es 1 ）in the Diannan area of JizhongDepression and constructs an isochronal sequence stratigraphic correlation framework with one system tract as a unit.One third-order sequence is recognized in Es 1 ，and it can be subdivided into a lowstand，a lake transgression and a highstand systems tractbased on the stratigraphic superimposition patterns aswell as its lithologic and lithofacies changes.The construction of the isochronous stratigraphic framework shed light on the analysis of composition，evolution and distribution pattern of its sedimentary facies.The result indicates that the Es 1 is dom inated by delta and lacustrine facies.

Key words: firstmember of the Shahejie Formation, sequence stratigraphy, sedimentary system, Diannan area, Jizhong Depression