Xenon hydrate formation in water-in-oil emulsion: Investigation with the radiographic method

Xenon hydrate formation in water-in-oil emulsion: Investigation with the radiographic method

•Xenon hydrate formation in water in oil emulsion was studied by radiographic method.•Hydrate formation follows two stages.•The first stage is the rapid growth of the hydrate crust at the gas – emulsion interface.•The second stage is slow hydrate growth throughout the emulsion.•Hydrate formation res...

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Bibliographic Details
Published in:Chemical engineering science Vol. 270; p. 118539
Main Authors: Manakov, Andrey Yu, Kuper, Konstantin E., Drobchik, Arkadi N., Sagidullin, Alexey K., Semenov, Matvei E., Stoporev, Andrey S.
Format: Journal Article
Language:English
Published: Elsevier Ltd 15-04-2023
Subjects:
DSC
Emulsion
Gas hydrate
Oil
Radiography
Xenon
Radiography
Gas hydrate
Oil
Emulsion
DSC
Xenon
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Summary:•Xenon hydrate formation in water in oil emulsion was studied by radiographic method.•Hydrate formation follows two stages.•The first stage is the rapid growth of the hydrate crust at the gas – emulsion interface.•The second stage is slow hydrate growth throughout the emulsion.•Hydrate formation results in mechanical deformation of the emulsion sample. Formation of gas hydrate plugs can significantly complicate oil recovery. For this reason, investigating hydrate formation in oil disperse systems is topical. This work presents the results of radiographic and DSCinvestigations of xenon hydrate formation in awater-in-oil emulsion. The process proceeds in two stages as follows. The hydrate proliferates near the emulsion–gas boundary in the first stage. The hydrate particles in this region grow together, at least partially. The final hydrate content in this area is significantly higher than in other parts of the sample. In the second stage, the hydrate's slow growth occurs over the sample's entire volume distorting its shape, possibly due to the difference in water and hydrate molar volumes. At this stage, a significant part of the hydrate (33%) forms with no detectable heat release.The obtained results will improve the description of the kinetics of hydrate growth in static water-in-oil emulsions.
ISSN:0009-2509
1873-4405
DOI:10.1016/j.ces.2023.118539