油页岩干酪根热降解的动力学性质及其地球化学意义

KINETIC FEATURES OF THERMO-DEGRADATION OF KEROGENS IN OIL SHALES AND THEIR GEOCHEMICAL SIGNIFICANCES

张大江 黄第藩 李晋超 张亚丽

Zhang Dajiang Huang Difan Li Jinchao Zhang Yali

页岩油生产过程中的动力学研究,已有半个多世纪的历史了。近几年来,随着干酪根成油学说的发展,为了揭示成烃机理,关于油页岩和生油岩干酪根热降解反应动力学的研究,引起了许多石油地球化学工作者的极大兴趣。

The kinetic features of thermo-degradation of kerogen in unmatured oil shales and low-rank coals are studied by means of thermogravimetric analysis.The study indicates that there is no unitary reaction order and the apparent activation energy varies also in the entire process of the thermo-dagradation.The maturing process of kerogen can be ascribed to zero-order reaction and has lower average apparent activation energy;the oil generation process of matured kerogen can be ascribed to first-order reaction and has higher average apparent activation energy.The relation between the kerogen types and average apparent activation energies in maturing process can be given as E>E>E;while in oil generation process as E>E>E.

10.11743/ogg19830405