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.