TY - JOUR
TI - Study on the model of contaminant ions reaction and diffusion near wellbore
AU - Shi Xiang-Chao
AU - Cai Wu-Qiang
AU - Meng Ying-Feng
JN - Thermal Science
PY - 2015
VL - 19
IS - 11
SP - 157
EP - 162
PT - Article
AB - During the development of oil field, well operation fluids will inevitably  invade the formation, and insoluble is produced when contaminant ions  contained in operation fluids react with formation fluids, which will easily  plugs the pores, consequently affecting the flow of formation fluids. It is  of remarkable significance for formation damage evaluation to study the laws  of contaminant ions transportation and distribution near wellbore. In this  study, the characteristics of highspeed percolation and contaminant ions  diffusion near wellbore are reasonably considered, and then we established  the non-Darcy flow reaction-diffusion equations, from which the contaminant  ions distribution and transportation will be illustrated, thereby, the  effects of pollutants migration and reaction on porosity and permeability are  further studied. Thus, the newly developed model can provide theoretical  basis and practical reference for plug removal.