Raymer hunt transform (porosity/transit time relationship)
Input(s)
ø: Porosity (fraction)
\(\Delta t_{m a}\): Travel Time in Matrix \((\mu \mathrm{s} / \mathrm{ft})\)
\(\Delta t_{f}\): Travel Time in Liquid/fluid \((\mu \mathrm{s} / \mathrm{ft})\)
Output(s)
\(\Delta \mathrm{t}\): Total Travel Time \((\mu \mathrm{s} / \mathrm{ft})\)
Formula(s)
\[
\Delta t=\left(\frac{(1-\phi)^{2}}{\Delta t_{m a}}+\left(\frac{\phi}{\Delta t_{f}}\right)\right)^{-1}
\]
Reference(s)
Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 3, Page: 56.