Total vs. Effective Porosity: Measurement, Interpretation Implications for Reservoir Modeling
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About the Course
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Abstract
This presentation examines total (PHIT) and effective (PHIE) porosity, showing that both are interpretations rather than direct measurements. It challenges common misconceptions, particularly that density porosity equals PHIT, and highlights how core measurements depend on laboratory procedures. Practical methods for deriving and calibrating porosity from logs are reviewed, alongside the limitations of multimineral models.
Your Instructor
Steve Cuddy is a petrophysicist who has worked with Schlumberger, BP, and Baker Hughes. He holds a PhD in petrophysics from the University of Aberdeen and degrees in physics, astrophysics, and philosophy. He has over 50 years of industry experience in formation evaluation and reservoir modelling. He has authored several award-winning SPE and SPWLA papers and has served as a Distinguished Lecturer for both organisations.
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