The products from simulated weathered experiment of different crude oils are analyzed by GC/MS technique. The feasibility, principium and efficient index of weathered oils identification with the applications of recognition of relative distribution patterns and biomarker of aromatic hydrocarbon based on geochemisty are discussed. Alkylnaphthalene and aromatic sulfur compounds are indicative of depositional environment, methylnaphthalene ratio and methylphenanthrene index increase with the thermal maturity. ...
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