石油与天然气地质 ›› 2009, Vol. 30 ›› Issue (6): 762-767.doi: 10.11743/ogg20090614

• 油气地质 • 上一篇    下一篇

Bongor盆地油气成藏地质条件及分布规律初探

宋红日1,2, 窦立荣2, 肖坤叶3, 胡勇2, 任立忠2   

  1. 1. 中国地质大学, 北京, 100083;中国石油天然气勘探开发公司, 北京, 100034;
    2. 中国石油天然气勘探开发公司, 北京, 100034;
    3. 中国石油天然气股份有限公司, 石油勘探开发研究院, 北京, 100083
  • 收稿日期:2009-05-13 出版日期:2009-12-25 发布日期:2012-01-16

An exploratory research on geological conditions of hydrocarbon pooling and distribution patterns of reservoirs in the Bongor Basin

Song Hongri1,2, Dou Lirong2, Xiao Kunye3, Hu Yong2, Ren Lizhong2   

  1. 1. China University of Geosciences, Beijing 100083, China;
    2. China National Oil and Gas Exploration and Development Corporation, Beijing 100034, China;
    3. PetroChina Exploration & Development Research Institute, Beijing 100083, China
  • Received:2009-05-13 Online:2009-12-25 Published:2012-01-16

摘要:

Bongor盆地位于西非裂谷系和中非裂谷系交汇部位,是受中西非裂谷系(WCARS)影响发育起来的中新生代裂谷盆地。Bongor盆地下白垩统发育多套良好烃源岩、多套储集性能良好的砂体、有效的圈闭和3套封盖性能良好的区域性盖层及优越的生储盖组合配置,构成其油气成藏的基本地质条件;构造、构造-岩性复合型是主要的油气藏类型;生油凹陷和成熟烃源岩分布范围、区域性盖层、储集砂体和二级构造带控制着油气分布;北部斜坡带中段的深挖细找,前中生界基岩、北部斜坡带东、西两侧以及南部陡坡带是今后油气勘探的方向。

关键词: 烃源岩, 储层, 油气成藏, Bongor盆地, 西非裂谷系

Abstract:

The Bangor Basin,a Meso-Cenozoic rift basin developed under the influence of the West and Central Africa Rift Systems,is located in the joint of the West Africa Rift System and the Central Africa Rift System.The basic geological conditions in the Bongor Basin are favorable for hydrocarbon pooling,including multiple sets of quality source rocks in the Lower Cretaceous,multiple sets of sandbodies with good reservoir properties,effective traps,3 quality regional seals and excellent source-reservoir-seal combinations.The structural traps and the structural-lithologic traps are predominant.The distribution of hydrocarbons is under the control of the distribution of hydrocarbon kitchen and mature source rocks,regional seals,reservoir sandbodies and secondary structu-ral zones.For further exploration,the focus will be the middle section of the northern slope zone,pre-Mesozoic basement,east and west sides of the northern slope zone and the southern steep slope zone.

Key words: source rock, reservoir, hydrocarbon pooling, Bongor Basin, West Africa Rift System

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