Geochemical modelling of acid injection in high salinity sandstones at reservoir conditions

Waterflooding is widely implemented to enhance oil recovery. The displacement efficiency of this method depends on multiple factors, including makeup water properties, native oil, and formation rock. incompatibility the injected fluid with pore can result in a chemical non-equilibrium state within porous media that may different reactions depend type number existing components system. present research aims develop mathematical model capable handling geochemical predict pH ions concentration during an acid injection while considering alterations rock properties. dependency properties (viscosity density) considered based system ionic concentration, which be more crucial high saline media. validity developed was evaluated using experimental literature data. results reveal addition effect pH, process influenced by composition fluid. In other words, salinity significant simulations. Comparing homogenous heterogenous mineral distribution shows insignificant sensitivity amount heterogeneity total contents remain constant both cases.