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Reservoir-Fluid Classification Chapter | 2 21
FIGURE 2.8 Saturated black oil and its associated equilibrium gas-phase diagrams.
FIGURE 2.9 Saturated volatile oil and its associated equilibrium gas-phase diagrams.
oil and its associated equilibrium gas-phase envelopes show that the reservoir
temperature is well far from the cricondentherm (indicating gas condensate
behavior).
A similar graph for gas condensate reservoir fluid, at its saturation state,
is shown in Fig. 2.10. If a gas condensate reservoir is discovered at its satu-
ration pressure, it is likely that an oil leg exists. The oil associated with the
gas condensate fluid is volatile oil.
