Page 48 - Formulas and Calculations for Petroleum Engineering

Reservoir engineering formulas and calculations Chapter 1 41

1.93 Oil density—Standing’s correlation

Input(s)
g o : Oil Specific Gravity (fraction)
R s : Solution Gas Oil Ratio (SCF/STB)
g g : Gas Specific Gravity (fraction)
t: Temperature (F)

Output(s)
3
r o : Oil density (lbm/ft )

Formula(s)

o
s
62:4 g +0:0136 R g g
r ¼
o ! 1:175
0:5
g g
0:972 + 0:000147 R +1:25 t
s
g o
Reference: Boyun, G., William, C., & Ali Ghalambor, G. (2007). Petroleum Production Engineering: A Computer-Assisted
Approach, Page: 2/20.
1.94 Oil formation volume factor—Standing’s correlation

Input(s)
R s : Gas Oil Ratio (SCF/STB)
g o : Specific Gravity of Oil Phase (fraction)
g g : Specific Gravity of Gas Phase (fraction)
t: Temperature (F)

Output(s)

B o : Oil FVF (RB/STB)

Formula(s)

! 1:2
0:5
B ¼ 0:9759 + 0:00012 R * g g +1:25*t
o s
g o
Reference: Boyun, G., William, C., & Ali Ghalambor, G. (2007). Petroleum Production Engineering: A Computer-Assisted
Approach, Page: 2/20.

1.95 Oil formation volume factor—Beggs-standing correlation—P < P b

Input(s)
R s : Solution Gas oil ratio (fraction)
g g : Specific Gravity of Gas (fraction)
g o : Specific Gravity of Oil (fraction)
T: Temperature (F)