利用双金刚烷指标研究济阳坳陷凝析油的成熟度和类型

Study on Condensate Maturity and Type Using Methyl Diamantane Parameter

根据济阳坳陷烃源岩中的双金刚烷指标与镜质组反射率实测值,建立了它们之间的数值对应关系,根据这种关系确定了济阳坳陷凝析油的成熟度,它们均属成熟—高成熟阶段的演化产物,Ro值在1.26%以上。利用二甲基双金刚烷类型判识指标,判识出济阳坳陷凝析油为煤成和湖相混合有机质生成两种类型。

The empirical relationship between methyl-diamantane parameter and the corresponding vitrinite reflectance value has been established based on their experimental data of the source rocks in Jiyang Depression. This empirical relationship has been used to evaluate the maturity of the condensate in Jiyang Depression. The maturity of the condensate in this area is believed to be highly mature（ Rn 〉 1.3% ）. Meanwhile, by means of the dimenthyl-diamantane parameter, the condensate in Jiyang depression can be divided into two types, which were from the humic kerogen in coal deposit and the mixed-type kerogen in lacustrine facies, respectively.