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Oil correlations

Created by Arthur Aslanyan (Nafta College), last modified on Jan 26, 2023

	Location	p_b	R_s		B_o		c_o		μ_o			c_po	λ_o
			p ≤ p_b	p ≥ p_b	p ≤ p_b	p ≥ p_b	p ≤ p_b	p ≥ p_b	p = 1 atm	p ≤ p_b	p ≥ p_b
Standing (1942)	California	link	link	link	link
Vasquez-Beggs (1980)	World-wide	link	link	link	link	link		link			link
Glaso (1980)	North Sea	link	link	link	link				link
Marhoun (1988)	Middle East	link	link	link	link
Petrosky-Farshad (1993)	Gulf of Mexico	link	link	link	link	link		link	link	link	link
McCain (2011)	World-wide			link				link
Bergman-Sutton (2006-2009)	World-wide									link
Beggs-Robinson (1975)	N/A								link	link
Beal (1946)	California/ Mid-Continent								link		link
Chew-Connally/Standing (1959/1977)										link

In case the Undersaturated oil (p ≥ p_b) B_o correlation is not defined the most popular choice is to use Vasquez-Beggs (1980) Undersaturated B_o or Petrosky-Farshad (1993) Undersaturated Bo correlations.

In case of Undersaturated oil (p ≥ pb) one can also use the following relation between B_o and c_o:

(1)	$\begin{array}{l}\displaystyle c_o = - \frac{1}{B_o} \frac{dB_o}{dp}\end{array}$

(2)	$\begin{array}{l}\displaystyle B_o (p, T) = B_{ob}(T) \cdot \exp \left[ - \int_{p_b}^p c_o(p) \, dp \right], \quad B_{ob}(T) = B_o (p_b, T)\end{array}$

See Also

Petroleum Industry / Upstream / Petroleum Engineering / Subsurface E&P Disciplines / Reservoir Engineering (RE) / PVT correlations

References

Tarik Ahmed, Reservoir Engineering Handbook , Elsevier, 2006, ISBN-13: 978-0884157762

McCain, W.D. and Spivey, J.P. and Lenn, C.P., Petroleum Reservoir Fluid Property Correlations, 2011, PennWell Corporation, ISBN 9781593701871, ICCN 2010031823

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