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LaTeX Math Block
anchorPcow
alignmentleft
P_{cow} = p_o - p_w



LaTeX Math Block
anchorPcow
alignmentleft
P_{cog} = p_o - p_g


In most popular practical case of a 3-phase fluid model this will be:where

average phase pressure

LaTeX Math Inline
bodyp_o

oil phase pressure

LaTeX Math Inline
bodyp_g

gas phase pressure

LaTeX Math Inline
bodyp_w

water phase pressure

LaTeX Math Inline
bodyp


Some engineering applications make fair use of the concept of Average phase pressure:

3-phase Oil + Gas + Water fluid model


LaTeX Math Block
anchorOGW
alignmentleft
p = \frac{1}{3} \, ( p_w + p_o + p_g )


2-phase Oil + Water fluid model


LaTeX Math Block
anchorOW
alignmentleft
p = \frac{1}{2} \, ( p_w + p_o )


2-phase Oil + Gas fluid model


LaTeX Math Block
anchorOG
alignmentleft
p = \frac{1}{2} \, ( p_o + p_g )


2-phase Gas + Water fluid model


LaTeX Math Block
anchorWG
alignmentleft
p = \frac{1}{2} \, ( p_w + p_g )



See also

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Natural Science / Physics /  Fluid Dynamics / Percolation

Capillary pressure ] [ Average phase pressure ]