Characterization of oils from Fazenda Belém - Potiguar Basin, Northeast Brazil

Asphaltenes (isolated by preparative TLC) from Potiguar Basin (Brazil) crude oils were submitted to mild oxidation to disrupt their structure, releasing the occluded oil. The released hydrocarbons were compared with those from the original crude oil, in order to provide an additional insight regardi...

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Bibliographic Details
Published in:Petroleum science and technology 2018-02, Vol.36 (3), p.173-178
Main Authors: Silva, Iara Samara de Alcântara, de Sousa, Alek André Costa, de Souza, Igor Viegas Alves Fernandes, Capilla, Ramsés, da Cruz, Georgiana Feitosa, Citó, Antônia Maria das Graças Lopes, de Lima, Sidney Gonçalo
Format: Article
Language:English
Subjects:
asphaltene
Asphaltenes
biodegradation
Biomarkers
chromatography in Preparative Plate occluded hydrocarbons
Crude oil
Geochemistry
Hydrocarbons
Oxidation
potiguar basin
Thermal evolution
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Summary:Asphaltenes (isolated by preparative TLC) from Potiguar Basin (Brazil) crude oils were submitted to mild oxidation to disrupt their structure, releasing the occluded oil. The released hydrocarbons were compared with those from the original crude oil, in order to provide an additional insight regarding composition in biomarkers and depositional paleoenvironment. It was possible to suggest that the oil samples present low thermal evolution, marine depositional environment and anoxide. The results showed that the release of these occluded hydrocarbon, which are remnants from the original oil, can be a tool for the geochemical study of highly biodegraded oils, leading to better maturation and origin information.
ISSN:1091-6466
1532-2459
DOI:10.1080/10916466.2017.1403448