松辽盆地干酪根在矿物基质作用下的热解生烃特征和动力学的研究

Research on Pyrolysis Process and Kinetic Parameters of Kerogen from Songliao Basin in Presence of Mineral Matrixes

利用热解气相色谱仪和岩石评价仪,对松辽盆地干酪根进行热解模拟实验,考察了岩石中矿物介质对松辽盆地干酪根热解产物组成特征和生烃动力学的影响,完成了矿物介质对干酪根热解生烃过程影响的全面考察。实验结果表明:各种介质均改变了干酪根热解产物的组成特征,并不同程度降低了干酪根裂解的表观活化能,从而加速了反膨的进行。实验结果支持了粘土矿物的正碳离子催化机理。

The thermal simulation experiments on kerogen from Songliao basin was carried out by means of Rock -Eval and Py-GC apparatus. The effects of the mineral matrixes in rock on the pyrolysis process, composition of hydrocarbon generated and kinetic parameters were studied. The results show that matrixes have changed the composition of pyrolysis products and have decreased the apparent activation energy of pyrolysis reaction, thus speeding up the progress of reaction. The experiments prove that the catalytic effect of clay minerals can be interpreted by carbonium ion mechanism.