Abstract: Based on the substitution of network model for real porous media, this paper applies Monte-Carlo method to the study of the mechanism of particle migration/deposition in network model and of the effects of particle concentration and particle size distribution in permeability reduction of porous media. The method presented in this paper is not only suitable for the mechanism study of particle movement/deposition, but also for the research in some other fields.

Key words: particle size, pore clogging, formation harm, Month-Carlo Method, computer simulation