One of the SHF models:
where model parameters are calibrated on water saturation from OH logs for each lithofacies or petrotype individually. The coefficient is related to FWL correction but usually set the same for all lithofacies / petrotypes of a given reservoir unit. If core data is abundant then one can build a reasonable correlation of model parameters on porosity and/or permeability :
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Physics / Fluid Dynamics / Percolation
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Field Study & Modelling / Petrophysics / Saturation Height Function (SHF) / SHF mathematical models
[ Basic reservoir properties ]
1 | Cuddy, S., Allinson, G. and Steele, R.: “A simple, convincing model for calculating water saturations in Southern North Sea gas fields”, Paper H, SPWLA 34th Annual Logging Symposium, June 13th – 16th (1993). |
2 | SPE 71326, B. Harrison (Enterprise Oil), X.D. Jing (Imperial College, London), Saturation Height Methods and Their Impact on Volumetric Hydrocarbon in Place Estimates, 2001 |