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Synonym: = MBO fluid @model

Specific case of a 3-phase fluid model based on three pseudo-components  

LaTeX Math Inline
bodyC = \{ W, O, G \}
:

LaTeX Math Inline
bodyW

water pseudo-component, which may include minerals  (assuming formation water and injection water composition is the same)

LaTeX Math Inline
bodyO

dead oil pseudo-component 

LaTeX Math Inline
bodyG

dry gas pseudo-component


existing in three possible 
phases 

LaTeX Math Inline
body\alpha = \{ w, o, g \}
:

LaTeX Math Inline
bodyw

water phase, consisting of Water component only

LaTeX Math Inline
bodyo

oil phase, consisting of dead Oil pseudo-component and dissolved dry Gas pseudo-componentt (called Solution Gas)

LaTeX Math Inline
bodyg

gas phase, consisting of dry Gas pseudo-component and vaporized dead Oil pseudo-component (called volatile oil)


The volumetric phase-balance equations is:

LaTeX Math Block
anchor1
alignmentleft
s_w + s_o+s_g =1

where

LaTeX Math Inline
bodys_w = \frac{V_w}{V}

share of total fluid volume

LaTeX Math Inline
bodyV
occupied by water phase
LaTeX Math Inline
bodyV_w

LaTeX Math Inline
bodys_o = \frac{V_o}{V}

share of total fluid volume

LaTeX Math Inline
bodyV
occupied by oil phase
LaTeX Math Inline
bodyV_o

LaTeX Math Inline
bodys_g = \frac{V_g}{V}

share of total fluid volume

LaTeX Math Inline
bodyV
occupied by gas phase
LaTeX Math Inline
bodyV_g


The accountable cross-phase exchanges are illustrated in the table below:



LaTeX Math Inline
bodyw

LaTeX Math Inline
bodyo

LaTeX Math Inline
bodyg

LaTeX Math Inline
bodyW

x

LaTeX Math Inline
bodyO


xx

LaTeX Math Inline
bodyG


xx


It's a typical case for saturated reservoir.

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