الفهرس 
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Abstract
This study aims at assessing Carboniferous-Miocene organic-rich facies through detailed geochemical methods including TOC, Rock-Eval pyrolysis, liquid chromatography, stable carbon isotopes, gas chromatography and gas chromatography-mass spectrometry. These are conducted on rock samples retrieved from well-distributed off- and on-shore oilfields in the Gulf of Suez Basin. In addition, visual observation of palynodebris using transmitted white light (TWL) and fluorescence microscopy (FM) for 98 cuttings samples, led to a better understanding of the biological and paleoenvironmental impacts on petroleum potential of the source rocks. A similar geochemical scenario was applied to 52 crude oil samples from the study area. Chemometrics using 16 source-related biomarker and isotope ratios identify six genetic oil families in the Gulf of Suez. These share common characteristics, where the precursor organic matter was deposited in a restricted marine environment with limited land-derived organic matter. The major factor that greatly modifies oil composition in the Gulf of Suez is thermal maturation. However, migration history, spatial and temporal organofacies variations of the presumed source rocks are also important. The overall geochemical similarity of the Gulf of Suez oils confirms the mixed nature of these fluids, and suggests that no single source rock horizon is likely to have sourced the oil in this promising province. Based on oil-source correlation data and a decision tree chemometric model, the Brown Limestone, Esna, Thebes, and Nukhul formations are the effective source rocks for oil families III, IV, and V, whereas none of the source rock extracts has been assigned for Family-I or -VI oils.