新疆石油地质

新疆石油地质 ›› 2005, Vol. 26 ›› Issue (5): 540-543.

• 油气勘探 • 上一篇    下一篇

宝饶洼槽下白垩统层序地层与生储盖组合

易定红, 贾义蓉, 石兰亭   

  1. 中国石油 石油勘探开发科学研究院 西北分院,兰州730020
  • 收稿日期:2005-01-05 出版日期:2005-10-01 发布日期:2020-11-23
  • 作者简介:易定红(1975-),男,湖南邵阳人,工程师,层序地层学,(Tel)0931-8686143,

Sequence Stratigraphy and Source-Reservoir-Caprock Assemblages of Lower Cretaceous in Baorao Trough

YI Ding-hong, JIU Y-rong, SHI Lan-ting   

  1. Northwest Branch, Research Institute of Petroleum Exploration and Development, Lanzhou, Gansu 730020, China
  • Received:2005-01-05 Online:2005-10-01 Published:2020-11-23

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摘要： 运用层序地层学原理和方法,通过对钻井和地震资料的综合分析, 在二连盆地吉尔嘎朗图凹陷下白垩统中识别出1个超长期基准面旋回(二级层序)SSC1和5个长期基准面旋回(三级层序)LSC1、LSC2、LSC3、LSC4,LSC5,并分析了各旋回的发育特征。在等时地层格架内,分析了其生油岩、储集层、盖层及储盖组合的发育和分布特征与基准面旋回的内在联系,指出本区研究层段主要发育LSC1、LSC2、LSC3+LSC4和LSC5共4套储羞组合,其中LSC3+LSC4储盖组合为最有利的含油储盖组合。

关键词: 二连盆地, 下白垩统, 层序, 地层, 生储盖组合

Abstract: One super-long term stratigraphic base level cycle (the second-class sequence) and coresponding 5 long temm stratigraphic base level cycles (the third class sequence) are recognized in Lower Creataceous of Jiergalangtu sag, Erlian basin by using the ways and principles of high resolution sequence stratigraphy. The long-term cycles could be described as ISC, LSC, LSC, LSC, LSC, and their developed characters are analyzed in this paper. Within the correlation framework of the sag, the development and distribution of the source-reservoir-caprock assemblages and their inner relationship to the base level eycle. [t is pointed out that four sets of the assemblages (LSCI, LSCz, LSC:+LSCs and LSCs) are developed, of which LSC3+LSCs assemblages are the most favorable for hydrorarbon accumulation.

Key words: Erlian basin, Lower Cretaceous, sequence, stratigraphy, source-reservoir caprock assemblage

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