الفهرس | Only 14 pages are availabe for public view |
Abstract A review on the utilization of petroleum hydrocarbons of is~prenoid, hopanoid and steranoid nature in organic geochemical studies is given together with the role of trace metals in the science of petroleum. A number of crude oils from Egyptian oil fields in the Gulf of Suez and the Western Desert were selected for the present investigation. They were analyzed for their hydrocarbon and trace metal contents by column and gas chromatography, mass spectrometry and atomic absorption spectroscopy. The geochemical studies involved oil-oil, oil-source rock and oil-maturity correlations. These included both bulk and biomarker parameters to relate and classify the oils into genetic groups. The bulk correlation characterized the Gulf of Suez oil, Zaffarana, with anoxic marine depositional environment and the Shushan basin oils, Khalda, Salam, and UmBaraka, with nonmarine paleoenvironment. However, the depositional environments of the remaining oils from Dahab Merrier basin, Alamein and Hourus, as well as AbuEIGharadig basin oil, WD-33, and AbuSenan basin oil, TSW-16, were not completely characterized by bulk correlations alone. The n-alkane distribution patterns of oils showed an aliphatic hydrocarbon dominance and excluded any biodegradation. They also characterized the source organic input of the oils, Zaffarana, WD-33, and TSW-16 as of marine matter derived from algae and/or bacteria. However, the gas chromatogram traces of Khalda, Hourus. |