AI Article Synopsis
- The study focuses on the challenge of breaking emulsification in aging oil with high water content during tertiary oil recovery.
- Various experiments are conducted using ultrasonic reforming to analyze how different transducer input powers affect water content and the properties of oil samples before and after treatment.
- Results indicate that ultrasonic cavitation effectively demulsifies and dehydrates aging oil, achieving a dehydration rate of up to 98.24%, while also causing changes in droplet distribution and suggesting ultrasound's potential for reversible demulsification.
Article Abstract
With the tertiary oil recovery in the oilfield, the content of aging oil emulsion with high water content and complex components has become more prevalent, so it is crucial for aging oil to break the emulsification. In this paper, the experimental laws of water content are explored under the conditions of different transducer input powers through the ultrasonic reforming of aging oil, and the microscopic topography, particle size, components, etc. of oil samples before and after the irradiation of ultrasound are characterized through the microscopic analysis, particle size analysis and component analysis and other ways. The results show that the oil samples achieve the effect of demulsification and dehydration in the presence of ultrasonic cavitation effect, with a maximum dehydration rate of 98.24 %, and that the dehydration rate follows an "M-type" trend with the increase of power. The results of microscopic and particle size analyses demonstrate that ultrasonic irradiation destabilizes the oil-water interfacial membrane, and causes droplets of different sizes to collide, agglomerate, and settle. It was also observed that the droplets of the emulsion system are more evenly distributed and the intervals are increased. Furthermore, we hypothesize that ultrasound may be less irreversible in demulsification and dehydration of aging oil.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10995870 | PMC |
| http://dx.doi.org/10.1016/j.ultsonch.2024.106859 | DOI Listing |
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