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对白音查平凹陷生物降解稠油物性及地化特征进行研究,认为该凹陷稠油宏观上具有密度、粘度、凝固点高,饱和烃含量低,饱和烃与芳烃比值小的特征;微观上烷烃色谱及生物标志物表明稠油为两期混合油,成熟度属低-较成熟油的信息。通过同位素技术恢复了达6井稠油密度后,以生物标志物及物性特征将该凹陷稠油划分为三级降解油,为了解该区含油气远景和地质勘探部署提供了可靠依据。
The physical and geochemical characteristics of heavy oil biodegraded in Baiyinchaping depression are studied. It is concluded that the heavy oil in this depression has macroscopic characteristics of density, viscosity, high freezing point, low saturated hydrocarbon content and small ratio of saturated hydrocarbon to aromatic hydrocarbon. Biomarkers indicate that heavy oil is a mixture of two phases with low maturity - more information on mature oil. After the density of heavy oil in Well Da 6 was recovered by isotope technique, the heavy oil in this depression was divided into tertiary degraded oil with biomarkers and physical characteristics, which provided a reliable basis for understanding the prospect of oil and gas in the area and the deployment of geological exploration.