Analytical model for Joule-Thomson cooling under heat exchange during CO2 storage

•Exact solution for radial CO2 injection with Joule-Thomson cooling & heat exchange.•Heat exchange by Newton's law yields temperature profile stabilisation with time.•The Joule-Thomson effect can significantly decrease reservoir temperature.•Analytical model allows estimating the injection...

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Published inAdvances in water resources Vol. 190; p. 104758
Main Authors Chesnokov, Christina, Farajzadeh, Rouhi, Prempeh, Kofi Ohemeng Kyei, Kahrobaei, Siavash, Snippe, Jeroen, Bedrikovetsky, Pavel
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.08.2024
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Summary:•Exact solution for radial CO2 injection with Joule-Thomson cooling & heat exchange.•Heat exchange by Newton's law yields temperature profile stabilisation with time.•The Joule-Thomson effect can significantly decrease reservoir temperature.•Analytical model allows estimating the injection rates that avoid hydrate formation. This paper discusses axi-symmetric flow during CO2 injection into a non-adiabatic reservoir accounting for Joule-Thomson cooling and steady-state heat exchange between the reservoir and the adjacent layers by Newton's law. An exact solution for this 1D problem is derived and a new method for model validation by comparison with quasi 2D analytical heat-conductivity solution is developed. The temperature profile obtained by the analytical solution shows a temperature decrease to a minimum value, followed by a sharp increase to initial reservoir temperature on the temperature front. The temperature distribution head of the front is determined by the initial reservoir temperature, while the solution behind the front is determined by the temperature of injected CO2. The analytical model exhibits stabilisation of the temperature profile and the cooled zone. The explicit formula for temperature distributions allows determining the maximum injection rate that avoids hydrate formation. [Display omitted]
ISSN:0309-1708
1872-9657
DOI:10.1016/j.advwatres.2024.104758