Page 252 - PVT Property Correlations

Selection of PVT Correlations Chapter | 9 221

FIGURE 9.18 Comparison between calculated undersaturated oil viscosities from different cor-
relations with laboratory-measured values for the oil of Problem 2.

TABLE 9.7 Summary of Selected Correlations for Problem 2

Selected Correlation
Bubble point pressure Al-Shammasi (2001)
Gas in solution Farshad et al. (1996)
Oil formation volume factor Vasquez and Beggs (1980)
Dead oil viscosity Labedi (1992)
Saturated oil density Standing (1947)
Saturated oil viscosity Standing (1947)
Viscosity at the bubble point Chew and Connally (1959)
Undersaturated oil compressibility Dindoruk and Christman (2004)
Undersaturated oil viscosity Beal (1946)

are routinely used to characterize the fluids, it is expected that sets of
rules established for PVT correlation selection might yield inaccuracies
in some situations. However, the use of such rules is still beneficial, as
Problem 2 demonstrates. The use of rules can often result in selection of
reasonably accurate correlations, even if the technique does not lead to
selection of the most accurate correlation(s) for every fluid or for every
PVT property.