摘要
通过运用拟一阶动力学、拟二阶动力学及双一阶动力学模型来进行页岩气逸散过程的动力学分析,发现双一阶动力学模型能更好地解释页岩气的逸散过程,通过使用校正的AICc来代替R2从而更精确地确定最佳拟合模型。双一阶动力学模型拟合的最优化表明孔隙中的扩散过程分为两个阶段:较快的大孔扩散以及较慢的小孔扩散阶段,而且内扩散是控制页岩逸散速率的主要过程。
Through the use of pseudo-first-order dynamics,pseudo-second-order dynamics,and double-first-order dynamics models to carry out the dynamic analysis of the shale gas escape process,it is found that the double-first-order dynamics model can better explain the escape of shale gas. In the scattered process,the best-fitting model can be determined more accurately by using the corrected AICc instead of R2. The optimization of the double first-order kinetic model fitting shows that the diffusion process in the pores is divided into two stages: faster macropore diffusion and slower small pore diffusion,and internal diffusion is the main factor controlling the shale escape evolution process.
作者
王睿婧
杨开源
侯文文
吕佳瑶
Wang Ruijing;Yang Kaiyuan;Hou Wenwen;Lyu Jiayao(School of Earth Sciences and Engineering,Xi'an Shiyou University,Xi'an710000,China)
出处
《云南化工》
CAS
2021年第8期143-147,共5页
Yunnan Chemical Technology
关键词
现场解吸实验
页岩气逸散
动力学拟合
On-site Desorption Experiment
Shale Gas Evolution
Kinetic Fitting
