Principal stress due to petro-static pressure (hydraulic fracturing)
Input(s)
\(\gamma\) : Average Specific Weight of Formation \(\left(\mathrm{p} / \mathrm{cm}^{3}\right)\)
\(h\): Depth \((\mathrm{m})\)
Output(s)
\(\sigma_{z}\): Principal Stress in z-axis \(\left(\mathrm{kp} / \mathrm{cm}^{2}\right)\)
Formula(s)
\[
\sigma_{z}=\frac{\gamma \cdot h}{10}
\]
Reference(s)
Saydam, T., (1967). Principles of Hydraulic Fracturing, ARI Publishing Co., Page: 5.