Not sure what you are asking for....
It's simple math to transform capillary pressure plot to a Sw vs height above free water plot - if this is what you want, let me know and it's a easy solution (specify what sort of cap pressure test - fluids & mechanism, as well as what fluids and their densities in your reservoir). There are a number of functions you could then try to use to fit a general equation to this plot - Lambda, J-Func etc....
The harder bit is to take a few cap pressure curves, and decide how to apply them to all the different bits of rock in your model - 99.9999%+ of which do not have exactly the same properties to that which had the cap pressure measurement performed upon - Look to relate your Lambda/J-func etc relationships to your various cap pressure tests through perm, poro, facie or some combination of all the above..... no silver bullet
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