镜质体反射率作为成熟度指标的探讨

VITRINITE REFLECTANCE(Ro)AS A MATURATION INDICATOR

本文通过对源岩样品镜质体反射率的测定分析表明,未抽提源岩的R_0值与已抽提源岩的R_0值存在差异,并随成熟度增加这种差异逐渐增大;不同类型但经历了相同的演化程度之后的源岩R_0值不同;相同样品不同气体反应压力下,其R_0值不同。

ABSTRACT: Vitrinite reflectance of source rocks is determined and analyzed,it shows that there are differences in the vitrinite reflectance (Ro value) between initial sample and extract-ed sample and the difference increases progressively with maturation increasing. Ro value of different types of source rocks which experienced the same evalution,is different. Ro value is influenced by gas pressure in experimental simulation. And the same sample with different pressure,its Ro value differs.