Page 93 - Petrophysics
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PROPERTIES OF SUBSURFACE FLUIDS 67
PSEUDO REDUCED PRESSURE, D.
N
PSEUDO REDUCED PRESSURE, p,
Figure 2.16. Real gas deviation factor as a function of pp. and Tpr.
to estimate gas viscosities at various temperatures and pressures (Figures
2.17 and 2.18) [30].
Oil Density
The most commonly measured physical property of crude oils and its
fractions is the API gravity. It is an arbitrary scale adopted for simplified
measurement by hydrometers, because it enables a linear scale for gravity
measurement. The "MI gravity is directly related to the specific gravity
as follows:
OAPI = (E) - 131.5 (2.18)
SGGOOF
