Xinjiang Petroleum Geology ›› 2006, Vol. 27 ›› Issue (2): 200-203.

Previous Articles     Next Articles

Theory and Mathematical Modeling of Nano-Silica Gel System for Oil Displacement

JU Bin-shan1, FAN Tai-liang1, QIU Xiao-feng2, SUN Ren-yuan2, WANG Xiao-dong1   

  1. 1. Institute of Energy Resources, China University of Geosciences, Beijing 100083, China;
    2. China University of Petroleum, Dongying, Shandong 257061, China
  • Received:2005-06-14 Revised:2005-06-14 Online:2006-04-01 Published:2020-10-30

Abstract: The theoretical analysis of nano-silica gel for oil displacement is conducted to quantitatively study the oil displacement effect of SiO2 gel system in nanometer scale. Based on the theories of continuous flow of porous media, rheology of silica gel solution and adsorption and migration of silica gel in porous media, a two-phase multicomponent mathematical model for oil displacement is developed with a numerical simulator, by which effects of the silica gel mass concentration, injection volume and flooding style on porosity, permeability and production response. The results show that the nano-silica gel solution can be applied to decrease values of reservoir porosity and permeability and obviously increase oil recovery, indicating that the plug injection process of silica gel solution is better than its alternative or continuous injection process for oil displacement.

Key words: nano-silica gel, percolation, rheology, EOR, IOR, mathematical model

CLC Number: