Effect of Mixed Thermodynamic and Kinetic Hydrate Promoters on Methane Hydrate Phase Boundary and Formation Kinetics

In this communication, formation kinetics and stability of methane hydrate in mixtures of (propanone + sodium lauryl sulfate (SDS)), as thermodynamic and kinetic hydrate promoter, have been studied. Results show that both the induction time and initial formation rate have been increased in the presence of propanone and the mixture of (propanone + SDS). Propanone and mixtures of (propanone + SDS) solutions decrease the self-preservation at low pressures and temperatures below the ice point. Moreover, the presence of propanone decreases the storage capacity of methane hydrate. The addition of SDS, however, increases the experimental storage capacity in comparison with the theoretical value.