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Chemistry for Sustainable Development

2017 year, number 6

Synthesis of Natural Gas Hydrates in Water-in-Oil Emulsions

1Institute for Petroleum and Gas Problems, Siberian Branch, Russian Academy of Sciences, Yakutsk, Russia
2M. K. Ammosov North-Eastern Federal University, Yakutsk, Russia
3Republican Research Scientific-Consulting Centre for Expertise, Moscow, Russia
Keywords: гидрат природного газа, водонефтяная эмульсия (ВНЭ), гидратосодержание, natural gas hydrate, water-in-oil (W/O) emulsion, hydrate content
Pages: 575-580


The paper presents the results on synthesis of natural gas hydrates in a medium of water-in-oil emulsions in a high-pressure cell. Hydrates are generated in emulsions via a stepwise mechanism, as established. Its origin is driven by diffusion parameters of natural gas. Hydrate growth from natural gas dissolved in oil occurs in emulsion medium accompanied by concentrating methane, as demonstrated by the study of the composition of the resulting hydrates. Whereas hydrate composition does not depend on a ratio of oil and aqueous components of the emulsion. Hydrate content in emulsions is directly dependent on the amount of water in an emulsion composition and decreases with increasing the water fraction, as demonstrated.

DOI: 10.15372/CSD20170607