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叠合盆地特征及油气赋存条件 被引量:61

Geologic characteristics and petroleum accumulation conditions of superimposed basins
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摘要 叠合盆地在我国分布较广、结构多样,其油气资源规模和赋存成藏特点差别甚大。叠合盆地为不同世代相对独立盆地上下沉积叠置而成的组合盆地;归属改造盆地类型,具有独特的结构形式和成藏条件。根据叠合盆地演化和改造过程,将上叠盆地和下伏盆地的地质特征及两者叠合的时空关系作为一个整体,把叠合盆地划分为易延叠合型、改造叠合型、差异叠合型和多重叠合型4种类型,探讨了不同类型叠合盆地的油气赋存条件、成藏特点和分布规律。叠合盆地的下伏盆地一般发育并可能保存有良好的烃源岩,对盆地总的油气赋存条件、成藏特点和资源规模有重要影响。 Superimposed basins with different petroleum resource and accumulation features in different basins widely distribute in China and have obvious and various textures. These basins were formed by composed basins resulted from the superimposed sediments of separated basin in different stage. Those basins belong to one of the reformed basins and have the particular structures and petroleum accumulation conditions. On the basis of the evolution and reformation of the basins and taking the geological characteristics and their superimposed relation of overlying basins and underlying basins as a whole in time and space, the superimposed basins can be divided into four types of transforming superimposed basin, reformed superimposed basin, different superimposed basin and poly-superimposed basin. The petroleum formation condition, accumulation feature and distribution rule of different superimposed basin were discussed. The favorable source rock can be developed and kept in the underlying basin of the superimposed basins, which has significant influence on the whole petroleum occurrence condition, accumulation feature and resource scale of the basin.
作者 刘池洋
出处 《石油学报》 EI CAS CSCD 北大核心 2007年第1期1-7,共7页 Acta Petrolei Sinica
基金 国家重点基础研究发展规划项目(2003CB214600) 国家自然科学基金项目(No.40372096) 长江学者和创新团队发展计划资助项目(IRT0559)联合资助
关键词 叠合盆地 演化特征 上叠盆地 下伏盆地 烃源岩 油气成藏条件 superimposed basins evolution features overlying basin underlying basins source rock petroleum accumulation condition
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