@wikipedia
Excerpt |
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Physical correlation for capillary pressure on reservoir saturation: LaTeX Math Block |
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| P_{cow} (s_w) = \frac{ (\sigma \cos \theta) _{ow} } { \sqrt \frac{k}{\phi}} \; J_{cow}(s_w) |
LaTeX Math Block |
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| P_{cog} (s_g) = \frac{ (\sigma \cos \theta)_{og} } { \sqrt \frac{k}{\phi}} \; J_{cog}(s_g) |
where | oil-water surface tension | | oil-gas surface tension | | oil-gas contact angle | | oil-gas contact angle | | absolute permeability to air | | porosity | | some function of water saturation | | some function of gas saturation |
The functions and are called Leverett J-functions. They are individual to every certain rock type, just like relative permeability curves. There are many correlations for Leverett J-functions and the most popular is Brooks-Corey correlation: Excerpt Include |
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| Brooks-Corey correlation |
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| Brooks-Corey correlation |
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See also
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Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petrophysics / Capillary pressure / Capillary pressure @model