Abstract
Water injection into porous media serves various purposes such as maintaining reservoir pressure, wastewater removal, and enhancing hydrocarbon production recovery. One significant challenge in the water injection process is the formation of mineral scale due to the incompatibility between the injected water and the formation water. The dispersion coefficient, which characterizes the behavior of different ions in mixed waters, is a critical factor in water flooding studies. It determines the size of the mixing zone during miscible processes. This study calculates the dispersion coefficient using non-interacting and non-precipitating tracers in both homogeneous and heterogeneous cores. Experimental data were mathematically modeled, revealing previously unreported correlations between the dispersion coefficient and injection velocity for both types of rocks.
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