Yield strength (Bingham plastic model)

Input(s)

$\mathrm{K}$: Bulk Modulus (psi)

G: Shear Modulus (psi)

$\rho$: Density $(\mathrm{ppg})$

Output(s)

$V_{p}$: Velocity of Compressional Waves $(\mathrm{ft} / \mathrm{s})$

$V_{s}$: Shear Waves $(\mathrm{ft} / \mathrm{s})$

Formula(s)

$$ \begin{gathered} \mathrm{V}_{\mathrm{p}}=\left(\frac{\mathrm{K}+\frac{4 * \mathrm{G}}{3}}{\rho}\right)^{0.5} \\ \mathrm{~V}_{\mathrm{s}}=\left(\frac{\mathrm{G}}{\rho}\right)^{0.5} \end{gathered} $$

Reference(s)

Mark D. Zoback, Reservoir Geomechanics, Cambridge University Press, UK, page 63.