You are viewing an old version of this page. View the current version.
Compare with Current
View Page History
Version 1
Next »
Implicit Z-factor Correlations @model for the natural gas in the wide range of pseudo-reduced temperature
1.05 \leq T_{pr} \leq 3 and pseudo-reduced pressure
0.2 \leq P_{pr} \leq 15:
(1) |
Z = \frac{A_1 \, P_{pr}}{y} |
|
(2) |
-A_1 \, P_{pr} + \frac{y+y^2+y^3-y^4}{(1-y)^3} - A_2 \, y^2 + A_3 \, y^{\, A_4} = 0 |
|
(3) |
A_1 = 0.06125 \cdot t \cdot \exp \left[ -1.2 (1-t)^2 \right] |
|
(4) |
A_2 = 14.76 \, t - 9.76 \, t^2 +4.58 \, t^3 |
|
(5) |
A_3 = 90.7 \, t -242.2 \, t^2 + 42.4 \, t^3 |
|
(6) |
A_4 = 2.18 + 2.82 \, t |
|
|
where
See also
Natural Science / Physics /Thermodynamics / Z-factor / Z-factor Correlations @model
Reference
Dranchuk, P.M., and H. Abou-Kassem. "Calculation of Z Factors For Natural Gases Using Equations of State." J Can Pet Technol 14 (1975): doi.org/10.2118/75-03-03
Lateef A. Kareem, et al, New explicit correlation for the compressibility factor of natural gas: linearized z-factor isotherms, J Petrol Explor Prod Technol (2016) 6:481–492, DOI 10.1007/s13202-015-0209-3