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本文在文献[1]的基础上做了进一步的试验研究,发现慢速降压过程流速对时间的依赖关系呈指数曲线形式,同时进行了慢速升压试验,同样发现流速与时间的指数关系。文中对文献[1]定义的附加残余效应系数提出了修改,重新定义为滞留分子粘弹效应系数,对降压过程和升压过程的粘弹效应系数进行了对比。通过岩心出口液浓度数据,证实了文中描述的粘弹效应机理和分子构象改变的物理模型的可靠性。
Based on the literature [1], this paper makes a further experimental study and found that the dependence of velocity on the time in slow depressurization process is exponential curve, at the same time, the slow pressurization test is carried out, and the exponential relationship between velocity and time . In this paper, the additional residual effect coefficient defined in [1] is proposed and redefined as viscoelastic coefficient of stagnant molecule. The viscoelastic coefficient of the step-down process and the step-up process are compared. Through the core outlet liquid concentration data, the reliability of the physical model of the viscoelastic reaction mechanism and the molecular conformational change described in the paper is confirmed.