地球物理学进展 ›› 2012, Vol. 27 ›› Issue (6): 2585-2593.doi: 10.6038/j.issn.1004-2903.2012.06.036

• 应用地球物理 • 上一篇    下一篇

下刚果盆地构造特征及油气勘探潜力

杨晓娟1, 李军2, 于炳松1   

  1. 1. 中国地质大学(北京), 北京 100083;
    2. 中国石油化工股份有限公司石油勘探开发研究院, 北京 100083
  • 收稿日期:2011-12-30 修回日期:2012-02-22 出版日期:2012-12-20 发布日期:2012-12-20
  • 作者简介:杨晓娟,女,1982年生,中国地质大学(北京)硕士研究生,油气地质研究方向.(E-mail:cocolee8214680@sina.com)
  • 基金资助:
    国家油气专项子专题"全球主要地质时期原型盆地形成演化研究" (2011ZX05005-004-HZ06, 2011ZX05009-002)资助.

Structural feature and exploratory potential of the Lower Congo Basin

YANG Xiao-juan1, LI Jun2, YU Bing-song1   

  1. 1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;
    2. Exploration & Production Research Institute, SINOPEC, Beijing 100083, China
  • Received:2011-12-30 Revised:2012-02-22 Online:2012-12-20 Published:2012-12-20

摘要: 下刚果盆地位于西非海岸,为一中生代裂谷与被动大陆边缘叠合盆地.盆地被阿普特期盐岩分为盐上及盐下构造层,上下两层构造特征差异明显.盐下以早期裂陷晚期坳陷为特征,盐上地层受盐岩运动和构造背景的双重影响,由东到西分为拉张带、过渡带及挤压带. 盆地目前已证实的重要的成藏组合有三套,即盐下裂谷成藏组合、盐下-盐上成藏组合与第三系成藏组合. 综合分析认为水深大于2000 m深水区是盐上浊积砂体潜力最大的地区,浅水地区为盐上碳酸盐岩潜力区,而大西洋枢纽带两侧为盐下勘探潜力区.

Abstract: Lower Congo Basin, which is located in West Africa coast, is a superimposed basin of a continental rift basin and a passive continental margin basin. The basin is divided to pre-salt and post-salt tectonic layers by Aptian salt and two layers are of obvious differences in structural characteristic. Pre-salt structure is characterized by early rift and late depression. Post-salt structure is affected by salt movement and tectonic background, with a division of extensional, transitional and compressive belt from east to west. In present three important plays have been proved, which are pre-salt play, pre-salt and post-salt play and Tertiary play. Integrated geological analyses show that the exploratory potential area of turbidite sand of post-salt is the deep-water region with water depth over 2000m, that of carbonate of post-salt is shallow water region and that of pre-salt is lateral Atlantic hinge zone.

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