Mud rheology calculations - Bingham plastic model

Input(s)

$\tau_{\mathrm{y}}$: Yield Stress $\left(\mathrm{lb} / 100 \mathrm{ft}^{2}\right)$

$\mu_{\mathrm{p}}$: Bingham Plastic Viscosity $(\mathrm{cP})$

$\gamma$: Shear Rate $(1 / \mathrm{s})$

Output(s)

$\tau$: Shear Stress $\left(\mathrm{lb} / 100 \mathrm{ft}^{2}\right)$

Formula(s)

$$ \tau=\tau_{\mathrm{y}}+\left(\mu_{\mathrm{p}} * \gamma\right) $$

Reference(s)

Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015. Houston, Texas, Page: 185.