Application of high pressure DSC to the kinetics of formation of methane hydrate inwater-in-oil emulsion

Didier Dalmazzone 1, * Nejib Hamed 1 Christine Dalmazzone 2 L. Rousseau 2
* Corresponding author
1 UCP - Unité de Chimie et Procédés
2 IFPEN - IFP Energies nouvelles
Abstract : A micro DSC analyzer fitted with special high-pressure vessels was used to investigate the kinetics of methane hydrate formation in the water phase dispersed as a stable emulsion in deep offshore drilling fluids. At high sub-cooling conditions, the peak of hydrate formation is perfectly visible and regular-shaped, and could be fitted by a Gaussian law. The average time for hydrate crystallization of the water droplets’ population was represented as a logarithmic function of the inverse of absolute temperature. At low sub-cooling conditions, the formation appears confused with the baseline; the amount of hydrate formed was thus measured from its enthalpy of dissociation, after periods of formation of variable duration.
Keywords : water-in-oil emulsion kinetics methane hydrates DSC
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Journal articles
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https://hal-ensta-paris.archives-ouvertes.fr//hal-01179675
Contributor : Didier Dalmazzone <>
Submitted on : Thursday, July 23, 2015 - 10:33:46 AM
Last modification on : Tuesday, October 1, 2019 - 10:32:05 AM

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Didier Dalmazzone, Nejib Hamed, Christine Dalmazzone, L. Rousseau. Application of high pressure DSC to the kinetics of formation of methane hydrate inwater-in-oil emulsion. Journal of Thermal Analysis and Calorimetry, Springer Verlag, 2006, 85 (2), pp.361-368. ⟨10.1007/s10973-006-7518-1⟩. ⟨hal-01179675⟩

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