Influence of temperature on methane hydrate formation

Abstract During gas hydrate formation process, a phase transition of liquid water exists naturally, implying that temperature has an important influence on hydrate formation. In this study, methane hydrate was formed within the same media. The experimental system was kept at 1.45, 6.49, and 12.91 °C...

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Autores principales:	Peng Zhang, Qingbai Wu, Cuicui Mu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/07e2ba43fb0d42e4bb332fb334a2a8a8
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spelling	oai:doaj.org-article:07e2ba43fb0d42e4bb332fb334a2a8a82021-12-02T16:08:24ZInfluence of temperature on methane hydrate formation10.1038/s41598-017-08430-y2045-2322https://doaj.org/article/07e2ba43fb0d42e4bb332fb334a2a8a82017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08430-yhttps://doaj.org/toc/2045-2322Abstract During gas hydrate formation process, a phase transition of liquid water exists naturally, implying that temperature has an important influence on hydrate formation. In this study, methane hydrate was formed within the same media. The experimental system was kept at 1.45, 6.49, and 12.91 °C respectively, and then different pressurization modes were applied in steps. We proposed a new indicator, namely the slope of the gas flow rates against time (dν g /dt), to represent the intrinsic driving force for hydrate formation. The driving force was calculated as a fixed value at the different stages of formation, including initial nucleation/growth, secondary nucleation/growth, and decay. The amounts of gas consumed at each stage were also calculated. The results show that the driving force during each stage follows an inverse relation with temperature, whereas the amount of consumed gas is proportional to temperature. This opposite trend indicates that the influences of temperature on the specific formation processes and final amounts of gas contained in hydrate should be considered separately. Our results also suggest that the specific ambient temperature under which hydrate is formed should be taken into consideration, when explaining the formation of different configurations and saturations of gas hydrates in natural reservoirs.Peng ZhangQingbai WuCuicui MuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Peng Zhang Qingbai Wu Cuicui Mu Influence of temperature on methane hydrate formation
description	Abstract During gas hydrate formation process, a phase transition of liquid water exists naturally, implying that temperature has an important influence on hydrate formation. In this study, methane hydrate was formed within the same media. The experimental system was kept at 1.45, 6.49, and 12.91 °C respectively, and then different pressurization modes were applied in steps. We proposed a new indicator, namely the slope of the gas flow rates against time (dν g /dt), to represent the intrinsic driving force for hydrate formation. The driving force was calculated as a fixed value at the different stages of formation, including initial nucleation/growth, secondary nucleation/growth, and decay. The amounts of gas consumed at each stage were also calculated. The results show that the driving force during each stage follows an inverse relation with temperature, whereas the amount of consumed gas is proportional to temperature. This opposite trend indicates that the influences of temperature on the specific formation processes and final amounts of gas contained in hydrate should be considered separately. Our results also suggest that the specific ambient temperature under which hydrate is formed should be taken into consideration, when explaining the formation of different configurations and saturations of gas hydrates in natural reservoirs.
format	article
author	Peng Zhang Qingbai Wu Cuicui Mu
author_facet	Peng Zhang Qingbai Wu Cuicui Mu
author_sort	Peng Zhang
title	Influence of temperature on methane hydrate formation
title_short	Influence of temperature on methane hydrate formation
title_full	Influence of temperature on methane hydrate formation
title_fullStr	Influence of temperature on methane hydrate formation
title_full_unstemmed	Influence of temperature on methane hydrate formation
title_sort	influence of temperature on methane hydrate formation
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/07e2ba43fb0d42e4bb332fb334a2a8a8
work_keys_str_mv	AT pengzhang influenceoftemperatureonmethanehydrateformation AT qingbaiwu influenceoftemperatureonmethanehydrateformation AT cuicuimu influenceoftemperatureonmethanehydrateformation
_version_	1718384512571801600

Influence of temperature on methane hydrate formation

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