D型菌解无定形体和B型微粒体的热模拟实验研究

STUDY ON THE THERMAL SIMULATION EXPERIMENT OF D BACTERIODECOMPOSED AMORPHOUS SOLID AND B MICRINITE

本文采用快速热模拟实验方法，对菌解无定形体Ｄ和微粒体Ｂ含量达到７６．５０％～９３．８８％的干酪根样品进行热模拟实验，并着重讨论其热演化生烃规律及对成烃的贡献。实验结果表明，菌解无定形体Ｄ的液体烃产率较高，微粒体Ｂ的气体烃产率最大。所有实验样品的产烃峰期均发生在Ｒｏ值相当于０．７０％～１．００％时，产气峰期略滞后，Ｒｏ值约为０．８％～１．００％。烃类组分为Ｃ１－Ｃ１７，因此菌解无定形体和微粒体Ｂ是形成天然气和凝析油的重要显微组分之一。

By the method of the Rapid Thermal Simulation Experiment, kerogen samples with the D bacteriodecomposed amorphous solid and B micrinite contents of 76.50%-93.88% are conducted the experiment. And their hydrocarbon generating mechanism of thermal evolution and their contribution to hydrocarbon formation are discussed in particular. Experimental results reveal that D bacteriodecomposed amorphous solid has higher liquid hydrocarbon producibility and B micrinite has maximum gas hydrocarbon producibility. The peak period of hydrocarbon generation for all the experimental samples occurs at the R 0 value of 0.70%-1.00%, and the peak period of gas hydrocarbon generation slightly lags with the R 0 value of 0.80%-1.00%. As the hydrocarbon components include C 1-C 17 , hacteriodecomposed amorphous solid and B micrinite are some major macerals to form natural gas and condensate.