Natural gas clathrate hydrates, which exist under sea ground, are expected as near future energy resources. Dissociation kinetics of methane hydrates in viscous fluid, which have various viscosities, was studied experimentally. Simple ice-water system fitted well to model calculation. Influence of bubbles was one of primary factor of misfit of calculated value to experimental results in hydrates-water system. The bubble influence also affected dissociation in hydrate-XANVIS solution system.
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