摘要
在开放、变温热解实验中,对烃源岩样品进行了在线特定化合物13C/12C稳定同位素分析;在实验数据分析的基础上,利用平行一级反应模型和Arrehenius方程得出反应动力学参数。结果表明,同位素反应动力学结合区域热演化史能有效地解释天然气生成、聚集过程中同位素组成变化的特征,描述在地质系统天然气生成过程中的同位素效应。
In open non-isothermal pyrolysis system the source rocks was analyzed with ^13C/^12C stable-isotope of online specific compound. On the basis of the experimental data, reaction kinetic parameters were derived for each isotopic species of the hydrocarbon gases, assuming parallel first-order reactions and an Arrhenius-type temperature dependence. It is demonstrated that the combination of isotope-specific reaction kinetics with the regional thermal history provided a useful tool to account for variations in the isotopic compound of reservoir gases in the course of the accumulation history, and isotope-specific reaction kinetic parameters could satisfactorily describe the isotope effects associated with thermogenic natural gas generation in geological systems.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2005年第6期69-74,共6页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
北京市教育委员会共建项目(XK114140479)资助
关键词
天然气
稳定碳同位素
动力学模型
同位素分馏
活化能
natural gas
stable carbon isotope composition
kinetic model
isotopic fractionation
activation energy
