石油学报 ›› 2011, Vol. 32 ›› Issue (3): 417-423.DOI: 10.7623/syxb201103007

• 地质勘探 • 上一篇    下一篇

陆相断陷湖盆滩坝沉积模式——以东营凹陷古近系沙四上亚段为例

杨勇强 1  邱隆伟 1  姜在兴 2  银熙炉 3   

  1. 1中国石油大学地球资源与信息学院  山东青岛  266555; 2 中国地质大学能源学院  北京  100083; 3中国石化江汉油田天然气勘探开发处  重庆  404000
  • 收稿日期:2010-08-21 修回日期:2010-12-20 出版日期:2011-05-25 发布日期:2011-07-19
  • 通讯作者: 杨勇强
  • 作者简介:杨勇强,男,1982年11月生,2006年毕业于中国石油大学(华东),现为中国石油大学(华东)在读博士研究生,主要从事层序地层及沉积学研究。
  • 基金资助:

    国家科技重大专项(2008ZX05009-002)和中国石油大学(华东)优秀博士论文培育项目(Z10-02)联合资助。

A depositional pattern of beach bar in continental rift lake basins:A case study on the upper part of the fourth member of the Shahejie Formation in the Dongying Sag

YANG Yongqiang 1  QIU Longwei 1  JIANG Zaixing 2  YIN Xilu 3   

  • Received:2010-08-21 Revised:2010-12-20 Online:2011-05-25 Published:2011-07-19

摘要:

东营凹陷古近系沙四上亚段发育的滩坝沉积主要有砾质滩坝、砂质滩坝和碳酸盐岩滩坝。滩坝的形成与物源存在一定的关系,这种关系主要受物源类型、物源供应强度及水动力等的综合影响。东营凹陷各地区滩坝的宏观分布特征与微观沉积特征存在明显差异。在详细分析沉积特征的基础上,认为东营凹陷主要存在基岩—滩坝沉积体系、正常三角洲—滩坝沉积体系、扇三角洲—滩坝沉积体系和碳酸盐岩滩坝沉积体系,并建立了相应的沉积模式,为该区油气勘探提供了指导。

关键词: 东营凹陷, 沙四上亚段, 滩坝, 沉积特征, 沉积模式

Abstract:

The upper part of the fourth member of the Shahejie Formation in the Dongying Sag consists mainly of gravelly beach bar, sandy beach bar and carbonate beach bar. The present paper proposed that the formation of these beach bars showed a certain correlation with their sources, which was mainly influenced by combination of source type, source supply, hydrodynamic conditions and so on. There existed a significant difference in characteristics between the macro-distribution and the micro-deposition of beach bars in various regions of the Dongying Sag. Based on the detailed analysis of sedimentary characteristics, the paper divided beach bars of the upper part of the fourth member of the Shahejie Formation into several sedimentary systems, such as bedrock-beach bar, normal delta-beach bar, fan delta-beach bar and carbonate-beach bar.  Consequently, the corresponding sedimentary patterns were established in order to provide guidance for oil and gas exploration in the Dongying Sag.

Key words: Dongying Sag, upper part of the fourth member of Shahejie Formation, beach bar, sedimentary characteristics, depositional pattern