Peculiarities of hydrate formation in "natural gas/asphaltene-resin-paraffin deposits/water" systems

[摘要] The results of research into kinetic parameters of formation and decomposition of hydrates synthesized in "natural gas/asphaltene-resin-paraffin deposits (ARPD)/water" model systems and in a "natural gas/water" system have been considered. The synthesis and decomposition of hydrates have been conducted in a calorimetric cell of the high-pressure differential scanning calorimetry (DSC). Calculations of kinetic parameters of the processes under study: the rate constants and order of reaction of formation/decomposition of a hydrate - containing phase in paraffin deposits and water, have been performed applying the Avrami equation. The rate of decomposition of hydrate - paraffins has been identified to be half that of hydrates formed in distilled water, thus indicating the stability of hydrate - paraffins. The degree of water conversion into the hydrate has been determined to decrease with an increase of the water content in ARPD emulsions.

[发布机构] M. Ammosov North-Eastern Federal University, Yakutsk, Russia^1;Institute of Oil and Gas Problems, Siberian Branch, Russian Academy of Sciences, Yakutsk, Russia^2

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Avrami equations;Distilled water;High pressure differential scanning calorimetries;Hydrate formation;Model system;Order of reaction