Yousef Kazemzadeh

Due to population growth, the need for energy, especially fossil fuels, increases every year. Since the costs of exploring new reservoirs and drilling new wells are very high, most of the first and second period reservoirs have passed their life and it is necessary to use EOR methods. Water-based enhanced oil recovery methods are one of the common methods for increasing extraction from oil reservoirs. Water-based methods of increased harvesting can lead to emulsion formation and stability. Emulsion formation can change oil recovery according to its time, place and stability conditions. In this research, the formation and stability of the emulsion during the water-based methods of overharvesting and natural reservoir production are studied. Studying changes in emulsion formation and stability and its control in tanks is of great importance. The formation and stability of emulsion in slotted tanks is more important due to the heterogeneity of the tank. In this study, a micromodel with slot and matrix design was used to simulate the movement of emulsion in slotted tanks. In this research, water-in-oil emulsion with a volume ratio of 30 to 70 has been used and its dynamic movement in the matrix and gap environment has been studied. Salts, surfactants, and nanoparticles have been used in the aqueous phase. As a result, with image analysis, the droplet diameter of the emulsions containing AOS surfactant has a lower average droplet size and thus the stability of the emulsion is higher. The use of disulfide oil (DSO) also led to the intelligent control of asphaltene and more stability of the emulsion. In all experiments, the average droplet diameter decreased after injection into the micromodel, which indicates the positive effect