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Abstract
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Nowadays, many types of enhanced oil recovery methods are used in oil reservoirs in order to provide energy. Water flooding, polymer injection, water injection with low salinity, etc. are among the methods that are used to increase oil extraction, but due to the existence of heterogeneity in geophysical parameters, fluid properties, boundary conditions, etc., at the fluid boundary injection and oil, a phenomenon called fingering phenomenon occurs. With the increase of fingering phenomenon, injection fluid breaks through faster and as a result, less oil is produced, so it is necessary to investigate more factors affecting this phenomenon. In this study, the effects of changes in porosity, permeability, oil viscosity, injection fluid viscosity, and pressure difference on both sides of the reservoir on the phenomenon of fingering have been investigated, and the results indicate that the increase in permeability and the increase in pressure difference have a direct relationship with the intensification of the phenomenon of fingering. Also, the increase in porosity and viscosity has an inverse relationship with the intensification of the fingering phenomenon.
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