Volume 05: Proceedings of 11th International Conference on Applied Energy, Part 4, Sweden, 2019

Rheological of Methane Hydrate Formed from Emulsion Zaixing Liu, Weiguo Liu, Ran Liu, Chen Lang, Yongchen Song,Yanghui Li

Abstract

Methane hydrate formation has been a crucial factor affecting the blockage of in subsea oil and gas transportation pipelines. To study the rheological properties of hydrate slurries, methane hydrate were formed in situ from water-oil emulsion with different water cut (20 vol%-70 vol%). Meanwhile, viscosity measurement and yield stress measurement were conducted with a high-pressure rheometer. Emulsion exhibit a shear-thinning behavior and increase in viscosity under hydrate formation. Hydrate slurry viscosity and yield stress had a significant increase with increasing water volume fraction. And hydrate formed in oil-in-water emulsions were more likely to aggregate and cause blockage than in water-in-oil emulsions.

Keywords flow assurance, methane hydrate, rheology, emulsions, hydrate slurry viscosity

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