Experimental study of water droplet break up in water in oil dispersions using an apparatus that produces localized pressure drops
Oil production facilities have choke/control valves to control production and protect downstream equipment against over pressurization. This process is responsible for droplets break up and the formation of emulsions which are difficult to treat. An experimental study of water in oil dispersion drop...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2019-01-01
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| Series: | Oil & Gas Science and Technology |
| Online Access: | https://doi.org/10.2516/ogst/2018079 |
| _version_ | 1818667195741241344 |
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| author | Silva Fabricio S. Medronho Ricardo A. Barca Luiz Fernando |
| author_facet | Silva Fabricio S. Medronho Ricardo A. Barca Luiz Fernando |
| author_sort | Silva Fabricio S. |
| collection | DOAJ |
| description | Oil production facilities have choke/control valves to control production and protect downstream equipment against over pressurization. This process is responsible for droplets break up and the formation of emulsions which are difficult to treat. An experimental study of water in oil dispersion droplets break up in localized pressure drop is presented. To accomplish that, an apparatus simulating a gate valve was constructed. Droplet Size Distribution (DSD) was measured by laser light scattering. Oil physical properties were controlled and three different break up models were compared with the experimental results. All experimental maximum diameters (dmax) were above Kolmogorov length scale. The results show that dmax decreases with increase of energy dissipation rate (ε) according to the relation dmax ∝ ε−0.42. The Hinze (1955, AIChE J.1, 3, 289–295) model failed to predict the experimental results, although, it was able to adjust reasonably well those points when the original proportional constant was changed. It was observed that increasing the dispersed phase concentration increases dmax due to turbulence suppression and/or coalescence phenomenon. Turbulent viscous break up model gave fairly good prediction. |
| first_indexed | 2024-12-17T06:16:34Z |
| format | Article |
| id | doaj.art-8acb97a8767a48db9ae5fdfb4ddc678d |
| institution | Directory Open Access Journal |
| issn | 1294-4475 1953-8189 |
| language | English |
| last_indexed | 2024-12-17T06:16:34Z |
| publishDate | 2019-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Oil & Gas Science and Technology |
| spelling | doaj.art-8acb97a8767a48db9ae5fdfb4ddc678d2022-12-21T22:00:29ZengEDP SciencesOil & Gas Science and Technology1294-44751953-81892019-01-0174110.2516/ogst/2018079ogst180232Experimental study of water droplet break up in water in oil dispersions using an apparatus that produces localized pressure dropsSilva Fabricio S.Medronho Ricardo A.Barca Luiz FernandoOil production facilities have choke/control valves to control production and protect downstream equipment against over pressurization. This process is responsible for droplets break up and the formation of emulsions which are difficult to treat. An experimental study of water in oil dispersion droplets break up in localized pressure drop is presented. To accomplish that, an apparatus simulating a gate valve was constructed. Droplet Size Distribution (DSD) was measured by laser light scattering. Oil physical properties were controlled and three different break up models were compared with the experimental results. All experimental maximum diameters (dmax) were above Kolmogorov length scale. The results show that dmax decreases with increase of energy dissipation rate (ε) according to the relation dmax ∝ ε−0.42. The Hinze (1955, AIChE J.1, 3, 289–295) model failed to predict the experimental results, although, it was able to adjust reasonably well those points when the original proportional constant was changed. It was observed that increasing the dispersed phase concentration increases dmax due to turbulence suppression and/or coalescence phenomenon. Turbulent viscous break up model gave fairly good prediction.https://doi.org/10.2516/ogst/2018079 |
| spellingShingle | Silva Fabricio S. Medronho Ricardo A. Barca Luiz Fernando Experimental study of water droplet break up in water in oil dispersions using an apparatus that produces localized pressure drops Oil & Gas Science and Technology |
| title | Experimental study of water droplet break up in water in oil dispersions using an apparatus that produces localized pressure drops |
| title_full | Experimental study of water droplet break up in water in oil dispersions using an apparatus that produces localized pressure drops |
| title_fullStr | Experimental study of water droplet break up in water in oil dispersions using an apparatus that produces localized pressure drops |
| title_full_unstemmed | Experimental study of water droplet break up in water in oil dispersions using an apparatus that produces localized pressure drops |
| title_short | Experimental study of water droplet break up in water in oil dispersions using an apparatus that produces localized pressure drops |
| title_sort | experimental study of water droplet break up in water in oil dispersions using an apparatus that produces localized pressure drops |
| url | https://doi.org/10.2516/ogst/2018079 |
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