Velocity of shear waves
Input(s)
G: Shear Modulus \((\mathrm{Pa})\)
\(\rho\): Density \(\left(\mathrm{kg} / \mathrm{m}^{3}\right)\)
Output(s)
\(V_{s}\): Velocity of Shear Waves \((\mathrm{m} / \mathrm{s})\)
Formula(s)
Reference(s)
Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 3, Page: 46.
\(11.81 \quad V_{p}\) and \(V_{s}\) calculation (Eberhart-Phillips)
Input(s)
\(\emptyset\): Porosity (fraction)
C: Clay Content (fraction)
\(\sigma\): Effective Stress (psi)
Output(s)
\(V_{p}\): Velocity of Compressional Waves \((\mathrm{ft} / \mathrm{s})\)
\(V_{s}\): Shear Waves \((\mathrm{ft} / \mathrm{s})\)
Formula(s)
Reference(s)
Mark D. Zoback, Reservoir Geomechanics, Cambridge University Press, UK, Page: 53.
\(11.82 \quad V_{p}\) and \(V_{s}\) calculation (geomechanical model)
Input(s)
\(\mathrm{K}\): Bulk Modulus (psi)
G: Shear Modulus (psi)
\(\rho\): Density (ppg)
Output(s)
\(V_{p}\): Velocity of Compressional Waves \((\mathrm{ft} / \mathrm{s})\)
\(V_{s}\): Shear Waves \((\mathrm{ft} / \mathrm{s})\)
Formula(s)
Reference(s)
Mark D. Zoback, Reservoir Geomechanics, Cambridge University Press, UK, Page: 63.