A method for reducing gas seepage into a cement slurry. The method includes adding a formulation to the cement slurry, the formulation comprising at least one component responsive to a predetermined concentration of hydrocarbon gas in the cement slurry, where upon the cement slurry reaching the predetermined concentration of hydrocarbon gas, the hydrocarbon gas undergoes at least a partial oxidation caused by the formulation to quicken the setting time of the cement slurry via release of heat by an exothermic reaction.