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生物标志化合物地球化学特征研究表明,孔古3井重油是奥陶系原生油藏在地质演化过程中遭受次生改造(生物降解或水洗氧化)、再经后期深埋熟化并分别充填有奥陶系高熟烃类而形成的多期次充填的复合成因原油。
The study on geochemical characteristics of biomarker compounds shows that the heavy oil in the Konggou 3 well was subjected to secondary transformation (biodegradation or washing oxidation) during the geological evolution of the Ordovician primary reservoirs. After deep maturation and later filling of Ordovician Department of high-maturity of hydrocarbons and the formation of multi-time filling of complex causes of crude oil.