The thermodynamic equilibrium of the reservoir fluids may end up with the pressure difference between fluid phases (called capillary pressure) due to difference in fluids interaction with rocks.:
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| P_{cow} = p_o - p_w |
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| P_{cog} = p_o - p_g |
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| P_{cgw} = p_g - p_w |
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whereIn most popular practical case of a 3-phase fluid model this will be:
Some engineering applications make fair use of the concept of Average phase pressure
:See also
See also
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Natural Science / Physics / Fluid Dynamics / Percolation
[ Capillary pressure ] [ Average phase pressure ] [ Oil phase pressure ][ Gas phase pressure ][ Water phase pressure ]Capillary pressure