\Delta Q (t) = Q^{\downarrow}_t(t) - Q^{\uparrow}_t(t) + Q^{\downarrow}_{GC}(t) + Q^{\downarrow}_{WAQ}(t)

where

cumulative offtakes by the time moment

cumulative intakes by the time moment

cumulative volumetric inflow from gas cap expansion

cumulative volumetric inflow from aquifer expansion