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

Song Hongri; Dou Lirong; Xiao Kunye; Hu Yong; Ren Lizhong

doi:10.11743/ogg20090614

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An exploratory research on geological conditions of hydrocarbon pooling and distribution patterns of reservoirs in the Bongor Basin
Vol. 30, Issue 6, Pages: 762-767(2009)
Online First：25 December 2009，

Published：2009
DOI： 10.11743/ogg20090614
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DOI：

Song Hongri, Dou Lirong, Xiao Kunye, et al. An exploratory research on geological conditions of hydrocarbon pooling and distribution patterns of reservoirs in the Bongor Basin[J]. 2009, 30(6): 762-767. DOI： 10.11743/ogg20090614.

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。

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.