Numerical study of the injection of liquid sulfur dioxide in a porous layer saturated with methane and water

This paper presents the results of numerical simulation of the injection of liquid sulfur dioxide into a porous reservoir accompanied by the formation of sulfur dioxide gas hydrate. The case is considered where the reservoir is initially saturated with methane and water and has a finite length and an impermeable outer boundary. It is shown that at the initial stage, the displacement of methane from the reservoir can occur with or without the formation of methane gas hydrate, depending on the permeability of the porous medium and pressure. It is found that over time, the thermodynamic conditions in the region of methane filtration become close to the formation conditions of methane gas hydrate.