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Petroleum in the South Atlantic

The petroleum deposits in the South Atlantic are considered in terms of the contemporary understanding of the formation of petroleum and of the petroleum system concept. These hydrocarbon reserves (7% of the global reserves), contained in the sedimentary rims along the coasts of West Africa and of t...

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Bibliographic Details
Published in:Oil & gas science and technology 2004-05, Vol.59 (3), p.243-253
Main Author: Huc, A. Y.
Format: Article
Language:English
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Summary:The petroleum deposits in the South Atlantic are considered in terms of the contemporary understanding of the formation of petroleum and of the petroleum system concept. These hydrocarbon reserves (7% of the global reserves), contained in the sedimentary rims along the coasts of West Africa and of the Eastern seaboard of South America, result from a favourable geological setting that is essentially the same on both sides of the ocean, giving rise to an almost symmetrical pattern. Their history is described within the general framework of the opening of the South Atlantic Ocean, which began over 140 Ma ago with the breaking up of the proto-continent Pangea. The importance of these concepts for the opening up of deep and ultra-deep offshore prospects in West Africa and Brazil is underlined. La richesse pétrolière de l'Atlantique Sud s'explique par le biais du concept contemporain de système pétrolier. Ces réserves d'hydrocarbures (7 % des réserves mondiales), qui s'égrainent le long des côtes de l'ouest africain et de l'est du continent sud-américain, résultent d'une situation géologique favorable, essentiellement la même pour les deux côtés de l'océan. Leur mise en place est décrite ici dans le cadre général de l'ouverture de l'océan sud-Atlantique, qui a commencé il y a plus de 140 Ma avec la déchirure du protocontinent Pangée. On soulignera l'importance de ces concepts pour l'exploration des réserves offshore profondes et ultraprofondes des marges occidentale de l'Afrique et orientale du Brésil.
ISSN:1294-4475
1953-8189
DOI:10.2516/ogst:2004017