石油实验地质2018，Vol.40Issue(3)：372-380,9.DOI:10.11781/sysydz201803372
南大西洋两岸含盐盆地类型与油气分布规律
Basin types and hydrocarbon distribution in salt basins in the South Atlantic
摘要
Abstract
The salt basins in the South Atlantic are rift-passive continental margin superimposed basins.These basins have the same tectonic evolution history and similar characteristics of stratigraphic development, but the hydrocarbon distribution is extremely uneven.Based on the further subdivision of basin type,this paper discussed the distribution of hydrocarbon in the salt basins. First,according to the characteristics of stratigraphic structure which was deposited during the rift stage, the salt basins in the South Atlantic were divided into two kinds of basin:rift strata with characteristics of depressions and uplifts, and rift strata with monoclinic characteristics. According to the characteristics of stepped faults during the rift stage and the sedimentary characteristics during the stage of passive continental margin, each type can be subdivided into two subtypes. Second, based on the analysis of regional petroleum geological conditions, there are three hydrocarbon accumulation combinations in the study area, including pre-salt, post-salt Cretaceous and Tertiary hydrocarbon accumulation combinations, and this paper outlines accumulation models and the main controlling factors.Finally, from the point of view of the basin type,the difference of hydrocarbon accumulation conditions in different basins was pointed out,and the differences of hydrocarbon distribution in different basins were discussed. These results will guide further oil and gas exploration in the salt basins in the South Atlantic.关键词
成藏组合/主控因素/含盐盆地/南大西洋Key words
hydrocarbon accumulation combination/main controlling factor/salt basin/South Atlantic分类
能源科技引用本文复制引用
刘静静,邬长武,丁峰..南大西洋两岸含盐盆地类型与油气分布规律[J].石油实验地质,2018,40(3):372-380,9.基金项目
国家重大科技专项"南大西洋两岸盆地成藏条件及战略选区"(2016ZX05033001-003)资助. （2016ZX05033001-003）
