Difference between revisions of "McCain Oil density correlation"
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:<math>\rho_a = -49.8930 + 85.0149\ SG_g - 3.70373\ SG_g\ \rho_{po} + 0.0479818\ SG_g\ \rho_{po}^2 + 2.98914\ \rho_{po} - 0.0356888\ \rho_{po}^2 </math> | :<math>\rho_a = -49.8930 + 85.0149\ SG_g - 3.70373\ SG_g\ \rho_{po} + 0.0479818\ SG_g\ \rho_{po}^2 + 2.98914\ \rho_{po} - 0.0356888\ \rho_{po}^2 </math> | ||
| + | Next pseudoliquid density: | ||
:<math>\rho_{po} = \frac{R_s\ SG_g + 4,600\ SG_o}{73.71+R_s\ SG_g\ / \rho_a}</math> | :<math>\rho_{po} = \frac{R_s\ SG_g + 4,600\ SG_o}{73.71+R_s\ SG_g\ / \rho_a}</math> | ||
| + | |||
| + | Iterate until pseudoliquid densities are equal. | ||
=== Discussion === | === Discussion === | ||
Revision as of 12:08, 26 July 2017
Contents
Brief
McCain is an empirical correlation for the oil density published in 1995 [1].
Math & Physics
Pseudoliquid density:
Apparent liquid density:
Next pseudoliquid density:
Iterate until pseudoliquid densities are equal.
Discussion
Application range
Description of the Data Used[2]:
Number of oil systems = 600
Number of dead oil observations = 460
Number of live oil observations = 2,073
Nomenclature
= coefficient
= coefficient
= coefficient
= pressure, psia
= solution gas-oil ratio, scf/stb
= oil specific gravity, dimensionless
= temperature, °F
= coefficient
= viscosity, cP
Subscripts
- b - bubble point
- od - dead oil
- os - saturated oil
- o - undersaturated oil
References
- ↑ McCain, W.D. Jr.; Hill, N. C. (1995). "Correlations for Liquid Densities and Evolved Gas Specific Gravities for Black Oils During Pressure Depletion"
. Society of Petroleum Engineers (SPE-30773-MS).
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedBR1975
