摘要
在实验室条件下,利用压力差热分析仪(DTA)分别对新疆和吉林两种生油岩做了压力热解实验.获得了试样在压力1～60atm、升温速率为10℃/min条件下的热解DTA图谱,并采用总包一级反应动力学模型的积分法和微分法求得了动力学参数。结果表明,压力对于酪根的热降解有阻滞作用,对其热解动力学参数有一定的影响,文中还提出了压力因子f——反映压力对热解的阻尼作用;建立了新的压力热解动力学模型,检验结果表明,模型计算值与实验数据吻合较好。
For a better simulation of the natural degradation of source rock Kero- gen under experimental conditions, pyrolysis experiments on two kinds of source rock samples from Xinjiang and Jilin were carried out by means of high pressure differential thermal analyser(DTA). The pyrolysis DTA Curves were obtained under a linear rise of temperature of 10℃/min and a pressure of 1~60 atm respectively. The pyrolysis kinetics were investigated with the en- dothermal peaks in their DTA curves using integral method and differerntial method on an overall first order kinetic model. The kinetic parameters were calculated. It was shown that the pyrolysis of kerogen was retarded by pres- sure, and some effects of pressure on the pyrolysis kinetics were also inves- tigated. Furthermore, a pressure factor f was proposed, and a new pressure kinetic model was established. Results indicate a fair agreement between experimental and calculated data by using the suggested model.
出处
《石油学报》
EI
CAS
CSCD
北大核心
1991年第3期44-51,共8页
Acta Petrolei Sinica
基金
中国石油天然气总公司资助的研究课题
