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A STUDY OF HYDRATE FORMATION AND DISSOCIATION FROM HIGH WATER CUT EMULSIONS AND THE IMPACT ON EMULSION INVERSION.Greaves, David P., Boxall, John A., Mulligan, James, Sloan, E. Dendy, Koh, Carolyn A. 07 1900 (has links)
Methane hydrate formation and dissociation studies from high water content (>60 vol% water) – crude oil emulsions were performed. The hydrate and emulsion system was characterized using two particle size analyzers and conductivity measurements. It was observed that hydrate formation and dissociation from water-in-oil (W/O) emulsions destabilized the emulsion, with the final emulsion formulation favoring a water continuous state following re-emulsification. Hence, following dissociation, the W/O emulsion formed a multiple o/W/O emulsion (60 vol% water) or inverted at even higher water cuts, forming an oil-in-water (O/W) emulsion (68 vol% water). In contrast, hydrate formation and dissociation from O/W emulsions (≥71 vol% water) stabilized the O/W emulsion.
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