PROPERTIES OF BLACK OILS - Petroleum Reservoir Fluid Property Correlations - page 100

3

2

1

0

-1

-2

4.0

3.5

3.0

2.5

2.0

1.5

1.0

20 25 30 35 40 45 50

Stock-Tank Oil Gravity, °API

Eq. 3.22, B ob from Eq. 3.21a, c ofb from Eqs. 3.13
Al-Marhoun

Ahmed Eqs. 4-65, 4-69

Ahmed Eqs. 4-65, 4-70

Fig. 3-30. Average relative errors and average absolute relative errors of subsets of the data
described in table 3-18 sorted on stock-tank oil gravity show the quality of selected equations for
estimating oil formation volume factors for pressures greater than bubblepoint pressure across the
full range of this independent variable.