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Modeling on flowing rules of performed-particle-gel in porous media
WANG Jing1, LIU Hui-qing1, WANG Zeng-lin1,2, XU Jie1,2
(1.MOE Key Laboratory of Petroleum Engineering in China University of Petroleum, Beijing 102249, China;2.Shengli Oilfield Branch Company, SINOPEC, Dongying 257001, China)
Abstract:
In order to study the flowing rules of performed-particle-gel(PPG) in porous media, a performed-particle-gel flooding mathematical model characterizing the throat blocking and particles restarting was established based on the mass conservation law. The IMPES method and Runge-Kutta method were used to solve this mathematical model. The results show that PPG can realize deep profile control without damaging the medium and low permeable parts. PPG injection rate and injection volume fraction are the important factors influencing the profile control effect. The critical pressure and the compatibility between PPG diameter and throat diameter are the key factors determining the profile control effect. When the diameter ratio of PPG to throat and the critical pressure of restarting are lower, throat blocking can not occur. However, larger diameter ratio of PPG to throat and higher critical pressure may damage the reservoir.
Key words:  reservoir  performed-particle-gel  mathematical model  flowing rules  throat blocking  porous media