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PublisherWorld Petroleum CongressLanguageEnglish
Document ID 8127
Content TypeConference Paper
Title28. Relationship of Vapor-Liquid Equilibrium Ratios at Dewpoint Pressure to Compressibility Factors and Composition of Gas-Condensate Fluids
AuthorsC.K. Eilerts, N. Potts and B. A. Baker
Source5th World Petroleum Congress, May 30 - June 5, 1959 , New York, USA
Copyright1959. World Petroleum Congress
Preview Section II-Paper 28 COMPRESSIBILITY FACTORS AND COMPOSITION OF GAS-CONDENSATE FLUIDS BY C. KENNETH EILERTS," NORA POTTS"" AND BAKER*** - -. - __- --__ -I - -_- _-__- - __ composition of gas-condensate fluids i phase-boundary states. The vapor-liqi the critical state but departs from th and the critical temperature increases, to take this relationship of temperai c. ._. .. _..... 1 . -1 le other parameters. Optimum vali lures. 'wo methods are described for caicii _-_._ a--:>- __ A :-. ins of calculating equilibriui all components of a fluid ce between the temperature ,le.:--. .L - 'IfL-l..- --.:- ARSTRACT. The iinhii- -1atinneh;p between vapor-liquid equilibrium ratios at the dewpoint and s used to develop a mea m ratios for iid equilibrium ratio of is unity at iis value as the differen I of interest , The equation for calcuiatiiis UK cquiiau1-lu1ii Katlu is designed tures into account for both dewpoint and bubble-point states. Lomposition or rne iiquia pnase at tne dewpoint, determined for seven fluids at separator and reservoir temperatures, was utilized to determine one of the parameters required in the equation of the equilibrium ratio. Vapor pressures of the components at the temperature of interest are modified to provid ues of all the pa ted by least-square proced T (dating vapor-liquid equiiibnum ratios ot components of gas- condeinsata iiuius LIL uewpuiiit tciiipcratuies in the range 7O"to 310°F. when only composition of the fluid is known. Measured equilibrium ratios for relatively extrapolated to measured dewooint oreesure at the temperature of interest. rameters were calcula .... . .., low pressures may be

RESUME

. La relation unique entre composition des fluides gaz-condensai .. . - .. I .... vapeur-liquide au poi rapports d'équilibre les rapports d'équilibre I permet de calculer les nt de rosée et la pour les états de phase limite. ~e rapport d'eqiiilibre vapeur-liquide est unitaire pour tous les composants d'un fluide à l'état critique mais s'éloigne de cette valeur à mesure que croît la différence entre la tempéra- ture considérée et la température critique. L'équation qui permet de calculer le rapport d'équilibre. tient romote de ces temoératures Dour les deux états, et pour le point de rosée et pour celui de la phase liquide au point de rosée a 6th déterminée Dour et Qu réserw ries rt d'équilibre. nts j pour fournir les * YSIP~~FP nntima ne tnllP IPP nnrnmetrec nnr la méthode des formation de bulles. sept fluides aux températures du séparateni La composition de la paramètres requis dans l'équation du rappo à la température considérée
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