Revisiting Kelvin equation and Peng–Robinson equation of state for accurate modeling of hydrocarbon phase behavior in nano capillaries
Abstract The thermodynamics of fluids in confined (capillary) media is different from the bulk conditions due to the effects of the surface tension, wettability, and pore radius as described by the classical Kelvin equation. This study provides experimental data showing the deviation of propane vapo...
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2021
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oai:doaj.org-article:3c3f79f2365947eb9a3bd1dcbb0464642021-12-02T17:04:35ZRevisiting Kelvin equation and Peng–Robinson equation of state for accurate modeling of hydrocarbon phase behavior in nano capillaries10.1038/s41598-021-86075-82045-2322https://doaj.org/article/3c3f79f2365947eb9a3bd1dcbb0464642021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86075-8https://doaj.org/toc/2045-2322Abstract The thermodynamics of fluids in confined (capillary) media is different from the bulk conditions due to the effects of the surface tension, wettability, and pore radius as described by the classical Kelvin equation. This study provides experimental data showing the deviation of propane vapour pressures in capillary media from the bulk conditions. Comparisons were also made with the vapour pressures calculated by the Peng–Robinson equation-of-state (PR-EOS). While the propane vapour pressures measured using synthetic capillary medium models (Hele–Shaw cells and microfluidic chips) were comparable with those measured at bulk conditions, the measured vapour pressures in the rock samples (sandstone, limestone, tight sandstone, and shale) were 15% (on average) less than those modelled by PR-EOS.Ilyas Al-KindiTayfun BabadagliNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021) |
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Medicine R Science Q Ilyas Al-Kindi Tayfun Babadagli Revisiting Kelvin equation and Peng–Robinson equation of state for accurate modeling of hydrocarbon phase behavior in nano capillaries |
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Abstract The thermodynamics of fluids in confined (capillary) media is different from the bulk conditions due to the effects of the surface tension, wettability, and pore radius as described by the classical Kelvin equation. This study provides experimental data showing the deviation of propane vapour pressures in capillary media from the bulk conditions. Comparisons were also made with the vapour pressures calculated by the Peng–Robinson equation-of-state (PR-EOS). While the propane vapour pressures measured using synthetic capillary medium models (Hele–Shaw cells and microfluidic chips) were comparable with those measured at bulk conditions, the measured vapour pressures in the rock samples (sandstone, limestone, tight sandstone, and shale) were 15% (on average) less than those modelled by PR-EOS. |
format |
article |
author |
Ilyas Al-Kindi Tayfun Babadagli |
author_facet |
Ilyas Al-Kindi Tayfun Babadagli |
author_sort |
Ilyas Al-Kindi |
title |
Revisiting Kelvin equation and Peng–Robinson equation of state for accurate modeling of hydrocarbon phase behavior in nano capillaries |
title_short |
Revisiting Kelvin equation and Peng–Robinson equation of state for accurate modeling of hydrocarbon phase behavior in nano capillaries |
title_full |
Revisiting Kelvin equation and Peng–Robinson equation of state for accurate modeling of hydrocarbon phase behavior in nano capillaries |
title_fullStr |
Revisiting Kelvin equation and Peng–Robinson equation of state for accurate modeling of hydrocarbon phase behavior in nano capillaries |
title_full_unstemmed |
Revisiting Kelvin equation and Peng–Robinson equation of state for accurate modeling of hydrocarbon phase behavior in nano capillaries |
title_sort |
revisiting kelvin equation and peng–robinson equation of state for accurate modeling of hydrocarbon phase behavior in nano capillaries |
publisher |
Nature Portfolio |
publishDate |
2021 |
url |
https://doaj.org/article/3c3f79f2365947eb9a3bd1dcbb046464 |
work_keys_str_mv |
AT ilyasalkindi revisitingkelvinequationandpengrobinsonequationofstateforaccuratemodelingofhydrocarbonphasebehaviorinnanocapillaries AT tayfunbabadagli revisitingkelvinequationandpengrobinsonequationofstateforaccuratemodelingofhydrocarbonphasebehaviorinnanocapillaries |
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