Features of saturates mixture filtration in porous medium

30th International Conference on Interaction of Intense Energy Fluxes with Matter

Kachalov, V.V.^1 ; Maikov, I.L.^1 ; Molchanov, D.A.^1 ; Torchinsky, V.M.^1 ; Zaichenko, V.M.^1

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13, Moscow

125412, Russia^1

关键词: Hydrocarbon mixture;    Isothermal conditions;    Medium permeability;    Multicomponent mixture;    Retrograde condensation;    Self-oscillating systems;    Thermodynamic characteristics;    Thermodynamic conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012108/pdf
DOI  :  10.1088/1742-6596/653/1/012108

来源: IOP

【 摘 要 】

Consideration is given to the filtration process of the two-phase multicomponent mixture in the porous. It is shown that "mixture-porous medium" system becomes self- oscillating one during filtration process under special conditions when there is a region of retrograde condensation on the phase diagram of the mixture. A mathematical model of the hydrocarbon mixtures filtration process of the methane series has been developed and a computer program for calculating hydrodynamic and thermodynamic characteristics of this process under isothermal conditions with phase transitions has been created. Consideration is given to the basic mechanisms influencing the filtration dynamics. Limits of the model applicability are discussed. Condition range for occurring self-oscillatory properties in "mixture-porous medium" system is determined by medium permeability, viscosity of the mixture, initial and boundary filtration conditions. Experimental filtration research of mixtures "methane-n-butane", "methane-propane-butane", "methane-pentane" under the thermodynamic conditions corresponding retrograde condensation region on the phase diagram have shown validity of this model. It is argued that any multicomponent mixture having a retrograde condensation region on the phase diagram appears as self-oscillating system under right conditions.