ROLE OF PHASE EQUILIBRIUM IN MODULATING PRESSURE-TEMPERATURE PROFILES IN GAS-CONDENSATE RESERVOIRS
Abstract
Gas‑condensate fluids are complex multicomponent hydrocarbon mixtures that exhibit retrograde condensation — a phenomenon where liquid condenses from a single‑phase gas as pressure declines below the dew point at reservoir temperature. This paper reviews the thermodynamic properties, phase behavior, and production implications of gas‑condensate systems. It also provides quantitative phase diagrams for two representative fluids (Eilerts’ Fluid 843 and Fluid 1143) to illustrate real‑world variations in phase envelopes. The results underscore the importance of phase behavior in reservoir management, production optimization, and flow assurance.
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References
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Ahmed, T., Reservoir Engineering Handbook, 4th ed., Gulf Publishing, 2010.
