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Química Nova

Print version ISSN 0100-4042


CRUZ, Georgiana Feitosa da  and  MARSAIOLI, Anita Jocelyne. Natural processes of petroleum biodegradation in reservoirs. Quím. Nova [online]. 2012, vol.35, n.8, pp. 1628-1634. ISSN 0100-4042.

Petroleum biodegradation in reservoirs is a process caused by different microorganisms affecting many oil deposits which modifies the oil composition in a quasi-stepwise process starting from n-alkanes and isoprenoids through to diasteranes. This causes oil souring and increased viscosity, sulfur and metal content, having a direct impact on oil production and refining costs.

Keywords : aerobic and anaerobic microorganisms; petroleum biomarkers; oil composition.

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