PO.SCAL.Leverett.J.SI

Description

Leverett J-function, [dimensionless]. J = (Pc/σcosθ) × √(k/φ) (SI units).

Formula

=LAMBDA(Pc, K, porosity, IFT, theta, LET( Pc_psi, PO.UnitConverter(Pc, "kPa", "psi"), IFT_dynecm, PO.UnitConverter(IFT, "mN/m", "dyne/cm"), PO.SCAL.Leverett.J(Pc_psi, K, porosity, IFT_dynecm, theta)))

Parameters

Parameter Unit Description
Pc kPa Capillary pressure, [kPa]
K - Permeability, [mD]
porosity - Porosity, [fraction]
IFT mN/m Interfacial tension, [mN/m]. Typical oil-water ~30
theta - Contact angle, [degrees]

Examples

Invocation Expected
=PO.SCAL.Leverett.J.SI(689.5, 50, 0.2, 20, 360) 17.124191

Related Lambdas

PO.SCAL.BrooksCorey.Pc.SI

Brooks-Corey capillary pressure, [kPa]. Pc = Pd × Se^(-1/λ) (SI units).

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PO.SCAL.BrooksCorey.Sw.SI

Brooks-Corey saturation from capillary pressure, [fraction]. Inverse of Pc function (SI units).

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PO.SCAL.Cf.Lime.ByNewman.SI

Calculates rock pore volume compressibility in limestones using Newman correlation, [1/kPa] (SI units).

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PO.SCAL.Cf.Sand.ByNewman.SI

Calculates rock pore volume compressibility in sandstones using Newman correlation, [1/kPa] (SI units).

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PO.SCAL.Leverett.Pc.SI

Capillary pressure from J-function, [kPa]. Pc = J × σcosθ × √(φ/k) (SI units).

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PO.SCAL.VanGenuchten.Pc.SI

Van Genuchten capillary pressure, [kPa]. Se = [1 + (αPc)^n]^(-m) (SI units).

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Used in Blueprints

Capillary Pressure Models Comparison

Compare capillary pressure curves using Brooks-Corey and Van Genuchten models. Includes Leverett J-function for scaling between different rock types.

J-Function Capillary Pressure Scaling

Scale capillary pressure from a reference core plug to a different rock type using the Leverett J-function. Essential for transferring SCAL data between reservoir facies with different porosity and permeability.

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