Acidizing Operation Modelling in Sandstone Formations

In this paper a survey of modeling and simulation of matrix acidizing in sandstone formations and development of matrix acidizing simulator is investigated. The models used in acidizing of sandstone formation are recognized and one of the most important related models have been coded in such a way that equations covering this model and the stages of making the simulator is explained. In the end, by using simulation software, operations of characterizing of the formation as mineralogy, matrix acidizing, influences and parameters of design such as injection rate is investigated. The most important sandstone acidizing design parameters are acid injection rate, formulation and type of injected acid, volume of injected acid, volume of fluids used in after/before the injection. Computer simulation is performed as a way to investigate the influences of some factors on the result of acidizing operations and injecting fluid behavior and how to fix the damage from the wellbore for different values of these factors, Such as type of damaging material, percentage of formation mineralogy compound, damage intensity and its radius. Developed simulator can be applied to a number of these investigations.