Effect of exposure environment on the interactions between acid gas (H2S and CO2) and pozzolan-amended wellbore cement under acid gas co-sequestration conditions

- Pozzolan-amended cement was exposed to supercritical CO2-H2S and brine with CO2-H2S.
- Cement with 35 vol% pozzolan was altered more when exposed to brine.
- Cement with 65 vol% pozzolan was altered more when exposed to supercritical CO2-H2S.
- Difference in exposure environment did not result in difference in mineral formation.