| 北部湾盆地涠西南凹陷油气运聚成藏特征 |
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| 引用本文： | 李颂,杨小晏.北部湾盆地涠西南凹陷油气运聚成藏特征[J].世界地质,2012,31(2):365-370. |
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| 作者姓名： | 李颂 杨小晏 |
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| 作者单位： | 1． 中海石油( 中国) 有限公司勘探部北京100010; 2． 中海石油研究中心北京100027 |
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| 摘 要： | 北部湾盆地涠西南凹陷是个断陷湖盆，在油气运聚体系中，断裂可以起到沟通烃源岩的作用，将烃源岩和储层连通在一起; 不整合面造成不同层系的接触与连通，从而为其附近发育的各种圈闭提供油气侧向运移的通道，并形成油气藏。涠西南凹陷已发现的油气分布特征总体上呈“断裂沟源、断脊运移、两面控藏、复式聚集、满凹含油”的油气分布格局，形成了一个“一源多储、复式聚集、连片含油”的油气聚集区。
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| 关 键 词： | 涠西南凹陷 断裂 运移 成藏 北部湾盆地 |
Characteristics of hydrocarbon migration and accumulation in Weixinan sag of Beibuwan Basin |
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| LI Song
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YANG Xiao-yan.Characteristics of hydrocarbon migration and accumulation in Weixinan sag of Beibuwan Basin[J].World Geology,2012,31(2):365-370. |
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| Authors: | LI Song YANG Xiao-yan |
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| Institution: | 1． Department of Exploration，CNOOC Limted，Beijing 100010，China; 2． Research Center of CNOOC，Beijing 100027，China |
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| Abstract: | Weixinan sag in Beibuwan Basin is a faulted lake basin in type. In hydrocarbon migration and accumulation process, the faults can connect the source rocks with reservoirs. The unconformities result in contact and connection between the different formations which provide hydrocarbon lateral migration paths for the adjacent traps to form accumulations. The distribution characteristics of hydrocarbon in Weixinan sag can be described as ＂rift connecting the source rocks, hydrocarbon migrating along the ridge, source rocks from both sides, multiple accumulations in a single structure and oil-bearing in full sag＂ , and formed a hydrocarbon accumulation zone of multiple reservoirs and accumulations with same source. |
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| Keywords: | Weixinan sag fault migration hydrocarbon accumulation Beibuwan Basin |
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