显微组分分离在测定深湖相烃源岩镜质体反射率中的应用

镜质体反射率是判断烃源岩成熟度最核心的指标,是常规、非常规油气勘探开发必不可少的关键指标,但深湖相烃源岩的镜质体含量较低,难以找到足够数量点数的镜质体来测定镜质体反射率。提出利用有机显微组分分离技术选择性富集烃源岩中镜质组的实验方法使镜下的镜质组组分占比提高、镜质体点数增加,从而解决测定深湖相等低镜质体含量的烃源岩镜质体反射率困难的问题。

Features and correct application of coal vitrinite reflectance index

The law of mathematical statistics, which the coal vitrinite reflectance index obeys, the existing vitrinite representing deviations, and the advantages of judging coalification and the shortage of judging coal type were analyzed. The advantages and disadvantages of various determination methods and the expression index and different methods of identifying vitrinite on the determination results were compared. The vitality of coal vitrinite reflectance depends on its full play the unique function of reflectance histogram and the systematic errors between different determination methods do not affect the application based on reflectance histogram are considered.