Stochastic nature of carbon dioxide hydrate induction times in Na-montmorillonite and marine sediment suspensions

► CO2 hydrate induction times in the presence of Na-montmorillonite were measured in high-pressure batch experiment. ► Stochastic analyses found that the best fit for the induction time distribution is lognormal distribution. ► Pressure, temperature, NaCl, and organic matter significantly change the lognormal parameters. ► Induction time is strongly affected by CO2-water-surface interactions. ► Suggest a better standard to select a proper site of CO2 storage in hydrates.