油气生成的热解实验与动力学研究进展

在过去几年里,关于油气生成进行了许多模拟实验工作,在动力学和热解实验上取得了一些新进展和新的认识。结合实验和研究,指出了应该注意的和有待解决的科学问题。选择开放体系还是封闭体系进行热解应取决于实验目的和研究目标。当前,一级平行反应动力学模型依然是油气生成过程研究的重要模型;具有超压的生烃动力学模型有待于进一步研究;ICTAC动力学委员会推荐的无模型动力学方法对于超压等因素的研究是困难的;对于包含油裂解的实验,压力的设置需要结合具体地质背景确定,最高热解温度须谨慎确定。

Advance in the pyrolysis experiments and kinetic modeling of oil and gas generation

The past decades have witnessed many simulating experiments carried out on the oil and gas generation and some new insight and advances in the kinetics and pyrolysis achieved.This paper is focused on an overview and consideration and the problems under investigation,based on the combination of these achievements and experiment results.The selection of Open-or closed-system for the pyrolysis simulating experiments depends on the pyrolysis goals and the research objects.At preset,the first order,parallel kinetics model remains an important one for the oil and gas generating process research.The isoconsersional method recommended by ICTAC Kinetics Committee is difficult for certain factors studies,such as overpressure and the kinetics model with overpressure effect needs in the future study.The maximum pressure set is expected according to the geological setting and the maximum temperature of pyrolysis is carefully set up for the pyrolysis including oil cracking.