Initial effective horizontal stress

Input(s)

v: Poisson (unitless)

$\rho$: Overburden Density $\left(\mathrm{lb} / \mathrm{ft}^{3}\right)$

$\mathrm{H}$: Formation Depth (ft)

$\alpha$: Biot Constant (unitless)

$p_{p}$: Reservoir Pressure (psi)

Output(s)

$\sigma_{h}$: Effective Horizontal Stress (psi)

Formula(s)

$$ \sigma_{\mathrm{h}}=\left(\frac{v}{1-v}\right) *\left(\left(\rho * \frac{\mathrm{H}}{144}\right)-\left(\alpha * \mathrm{p}_{\mathrm{p}}\right)\right) $$

Reference(s)

Boyun, G., William, C., \& Ali Ghalambor, G. (2007). Petroleum Production Engineering: A Computer-Assisted Approach Page: 259.