Title: Comparison of Hydrocarbon Geological Characteristics of Intercoastal Passive Continental Margin Basins,South Atlantic Ocean
Abstract: By comparing the tectonic evolution,stratigraphic development,petroleum accumulation elements and exploration data in intercoastal passive continental margin basins in the south Atlantic ocean,this paper summarized the petroleum geological conditions and hydrocarbon distribution discrepancies of the two regions,including the genesis of their formations.The passive continental margin basins of West Africa have much more petroleum resources than those of eastern South America.The former's hydrocarbons are mainly found in post-salt sequences,dominant in structural and structural-stratigraphic traps,whereas the latter's hydrocarbons are found priority to post-salt sequences,secondary to pre-salt sequences,dominated by structural-stratigraphic traps.The development of continental margins is different in width and narrow extent,the West Africa is in alternately development,while the eastern South America is of nature of wide mid-south part and narrow north part.In general,the former has better quality and maturity of source rocks than the latter's,with well developed post-salt deep water turbidite sandstone and fault controlled petroleum vertical migration style of West Africa basins,compared with the broadly developed pre-salt carbonate reservoir and petroleum vertical and lateral migration controlled by fault,unconformity and lithology of eastern South America basins.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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