Experimental study of two-phase filtration regimes of methane_n-pentane mixture

31st International Conference on Equations of State for Matter

Zaichenko, V.M.^1 ; Molchanov, D.A.^1 ; Torchinskiy, V.M.^1

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

125412, Russia^1

关键词: Filtration problems;    Gas condensate reservoirs;    Initial pressure;    Isothermal conditions;    Liquid and gas phasis;    N-pentane mixtures;    Natural conditions;    Two-phase filtration;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012042/pdf
DOI  :  10.1088/1742-6596/774/1/012042

来源: IOP

【 摘 要 】

The results of experimental studies of methane-n-pentane mixture filtration in a porous medium under isothermal conditions in pressure range typical for gas-condensate reservoirs are presented. Interest in the filtration problem of such mixtures is aroused by the need to intensify production of heavy fractions of gas-condensate-valuable hydrocarbons, consisting of methane and its higher homologues. Different flow regimes including oscillatory one are observed during gas-condensate extraction under natural conditions. Our studies have shown that there are multiple flow regimes including self-oscillating one under isothermal conditions for this type of mixtures depending on the initial pressure, the kind of the mixture's phase diagram and the permeability coefficients of the liquid and gas phases in the porous medium.