Page 72 - Formulas and Calculations for Petroleum Engineering

Reservoir engineering formulas and calculations Chapter 1 65

Formula(s)

V b p
m
V ¼
1+ b p

Reference: Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 4,
Page: 320.

1.150 Volumetric heat capacity of a reservoir
Input(s)
3
M s : Volumetric Heat Capacity of Solids (btu/ft F)
Ø: Porosity (fraction)
S o : Oil Saturation (fraction)
3
M o : Volumetric Heat Capacity of Oil (btu/ft F)
S w : Water Saturation (fraction)
3
M w : Volumetric Heat Capacity of Water (btu/ft F)
S g : Saturation of Gas (fraction)
f: Fraction of non-condensable Gases (fraction)
3
M g : Volumetric Heat Capacity of Gases (btu/ft F)
r s : Density of Solids (g/cc)
C w : Isobaric Specific Heat of Water (btu/lb F)
DT: Temperature Differential (K)
L v : Latent Heat of Vaporization (btu/lb)

Output(s)
3
M r : Volumetric Heat Capacity of Reservoir (btu/ft F)

Formula(s)

v
L r s
M ¼ 1 ØÞ M +Ø M S +Ø S M +Ø S f M +1 fÞ + r C w
ð
ð
o
w
s
w
g
g
r
o
s
DT
Reference: Prats, M. 1986. Thermal Recovery. Society of Petroleum Engineers, New York, Chapter: 12, Page: 164.
1.151 Water breakthrough correlation in vertical wells—Bournazel and Jeanson
Input(s)
h: Oil Column Thickness (ft)
2
g: Gravitational Acceleration (ft/s )
k v : Vertical Permeability (mD)
r w : Water Density (g/cc)
m o : Oil Viscosity (cP)
r o : Oil Density (g/cc)
t BT : Water Breakthrough Time (s)
ø e : Porosity (fraction)
f m : Mobility Function Ratio (dimensionless)
Output(s)
t d : Dimensionless Breakthrough Time (days)