Characterization based on biomarkers distribution of some crude oils in Gulf of Suez area - Egypt

Eight crude oil samples from the gulf of suez oil fields were analyzed by using gc-ms. biomarker characteristics are used to provide information on source organic matter input,depositional environment and maturation level. data includes normal alkanes and a cyclic isoprenoids distribution,tarpanes and steranes aliphatic biomarkers. the biomarkers are characterized by a dominance of low to medium molecular weight n-alkane compounds with significant waxy n-alkane (nc25-nc35),low pr/ph ratio (< 1.0),high proportions of hopanes relative to tricyclic terpanes,ts/tm ratio of the oil samples ranged from (0.25 to 1.00) this together with the high sulphur contents,high values of c35/c34 and high c27 regular steranes. the biomarker parameters reflecting that the oils were derived from carbonate source rocks contain aquatic (algal and bacterial) organic matter with minor terrigenous organic matter contribution that were deposited in marine environments under reducing conditions and generated at different maturities. © 2017 university of mohammed premier oujda morocco.