Calculation of the Phase Equilibrium of a Hydrocarbon Mixture with Regard for the Capillary Pressure Jump in It by the Example of the Astrakhan Field

The influence of a capillary pressure jump in a porous medium on the equilibrium between its liquid and gas phases, defined by the Peng–Robinson equation of state, was investigated. A numerical analysis of the phase diagrams of a gas–condensate mixture, constructed in gas-pressure and liquid-pressur...

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Bibliographic Details
Published inJournal of engineering physics and thermophysics Vol. 96; no. 6; pp. 1516 - 1526
Main Authors Raikovskii, M. I., Dem’yanov, A. Yu, Dinariev, O. Yu, Rudenko, D. V.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.11.2023
Springer
Springer Nature B.V
Subjects
Analysis
Capillary pressure
Classical Mechanics
Complex Systems
Engineering
Engineering Thermodynamics
Equations of state
Heat and Mass Transfer
Industrial Chemistry/Chemical Engineering
Mathematical analysis
Mixtures
Numerical analysis
Phase diagrams
Phase equilibria
Porous media
Pressure jump
Thermodynamics
Vapor phases
saturation
gas–condensate mixture
phase equilibrium
free energy
capillary pressure jump
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Summary:The influence of a capillary pressure jump in a porous medium on the equilibrium between its liquid and gas phases, defined by the Peng–Robinson equation of state, was investigated. A numerical analysis of the phase diagrams of a gas–condensate mixture, constructed in gas-pressure and liquid-pressure coordinates for different capillary pressure jumps in the mixture, has been performed. The boundary of the two-phase region of such a mixture was determined as a domain of its existence in the two-phase state. The calculations were not associated with a concrete porous medium, and they were based on the condition of phase equilibrium of such a medium at different capillary pressure jumps in it.
ISSN:1062-0125
1573-871X
DOI:10.1007/s10891-023-02821-x