PROPERTIES OF BLACK OILS - Petroleum Reservoir Fluid Property Correlations - page 130

Greek
Δρ p Adjustment to oil density due to pressure, lb/cu ft,

equations (3.18e) and (3.19d)

Δρ T Adjustment to oil density due to temperature, lb/cu ft,

equations (3.18g) and (3.19f)

γ g Weighted average surface gas specific gravity, equation (3.4)

γ gR Reservoir free gas specific gravity, equation (3.25)

γ gSP Separator gas specific gravity

γ gST Stock-tank gas specific gravity, equation (3.5a)

γ STO Stock-tank oil specific gravity

μ Viscosity, cp

μ ob Oil viscosity at bubblepoint pressure, cp

μ oD Dead oil viscosity, cp, equation (3.23a)

μ oR Oil viscosity at reservoir conditions, cp, equation (3.23c) or

(3.24a)

ρ Oil density, lb/cu ft

ρ a Apparent liquid density of total surface gases, lb/cu ft,

equation (3.17e) or (3.18c)

ρ bs Fake density used in oil density calculations, lb/cu ft,

equations (3.18f) and (3.19e)

ρ o Oil density, lb/cu ft

ρ ob Oil density at bubblepoint pressure, lb/cu ft

ρ oR Oil density at reservoir conditions, lb/cu ft, equation (3.19a)

or (3.20)

ρ oRb Oil density at reservoir bubblepoint pressure, lb/cu ft,

equation (3.18a)

ρ po Density of pseudoliquid created by combining (by calculation)

the stock-tank liquid with the total surface gases,
equations (3.18b) and (3.19b)

ρ STO Density of stock-tank oil, lb/cu ft

φ Porosity, fraction