GAS CHROMATOGRAPHY-MASS SPECTROMETRY (GC-MS) COMPOSITIONAL ANALYSES OF AROMATIC HYDROCARBONS IN NIGER DELTA CRUDE OILS.
In: Petroleum & Coal, Jg. 57 (2015-11-01), Heft 5, S. 526-531
Online
academicJournal
Zugriff:
The composition of aromatic hydrocarbons used as diagnostic tools in oil correlation studies was investigated in Niger Delta crude oils. Crude oil samples collected from producing wells were fractionated and gas chromatography-mass spectrometry (GC-MS) used to analyze the aromatic fraction. The analysis revealed high abundance of aromatic hydrocarbons which consist of polycyclic aromatic hydrocarbons (PAHs) 92.8% - 93.7% and aromatic steranes 6.3% - 7.2%. PAHs identified include C1 - C3 naphthalenes, C0 - C2 phenanthrenes, C0 - C1 biphenyls, C0 - C1 fluorenes and C0 - C1 dibenzo- thiophenes. The considerably high abundance of naphthalenes and low dibenzothiophene/phenan- threne ratio from 0.09 - 0.11 indicated contribution of terrestrial organic matter to source rocks which were deposited in oxic environment. The identified aromatic steranes, monoaromatic steranes (MAS) and triaromatic steranes (TAS), were characterized by the short-chain C20 - C22 and long- chain C26 - C29 series. The abundance of TAS over MAS from 2.08 - 2.99 suggest high maturity crude oils for the Niger Delta region. From these results, the characterization of aromatic hydrocarbon compounds in Niger Delta crude oils have provided substantial evidence of their suitability as geochemical markers for crude oil correlation studies. [ABSTRACT FROM AUTHOR]
Titel: |
GAS CHROMATOGRAPHY-MASS SPECTROMETRY (GC-MS) COMPOSITIONAL ANALYSES OF AROMATIC HYDROCARBONS IN NIGER DELTA CRUDE OILS.
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Autor/in / Beteiligte Person: | Onyema, Mark O. ; Osuji, Leo C. |
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Zeitschrift: | Petroleum & Coal, Jg. 57 (2015-11-01), Heft 5, S. 526-531 |
Veröffentlichung: | 2015 |
Medientyp: | academicJournal |
ISSN: | 1335-3055 (print) |
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