Abstract

The changes in the dispersion of inverse emulsions of oil and their stability during the formation/decomposition of natural gas hydrates are studied in the work. It is established that in the cycle of the formation/decomposition of natural gas hydrates, the aqueous phase coalesces in oil emulsions, containing more than 60 wt % of water, with the subsequent average diameter of droplets enlarging by 12–28%. It is shown that water-in-oil emulsions lose their stability with the subsequent separation into continuous phases in both the processes of hydrate formation and freezing. The separation efficiency of emulsions with water cuts of less than 40 wt % during the hydrate formation process is higher than in freezing/thawing.

中文翻译：

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水合物形成前后油乳剂中水滴的分布

摘要

本文研究了天然气水合物的形成/分解过程中，油反相乳液的分散性及其稳定性的变化。可以确定的是，在天然气水合物的形成/分解循环中，水相在油乳液中会聚结，其中包含超过60 wt％的水，随后的平均液滴直径会增加12–28％。结果表明，在水合物形成和冷冻过程中，油包水型乳液失去了稳定性，随后被分离成连续相。在水合物形成过程中含水率小于40wt％的乳液的分离效率高于冷冻/解冻中的。