Average specific weight of the formation (hydraulic fracturing)
Input(s)
\(\gamma_{\text {min }}\): Specific Weight of Minerals \(\left(\mathrm{p} / \mathrm{cm}^{3}\right)\)
\(\gamma_{\text {Liq }}\): Specific Weight of Liquid Phase \(\left(\mathrm{p} / \mathrm{cm}^{3}\right)\)
\(\varnothing\) : Porosity (fraction)
Output(s)
\(\gamma_{\text {formation }}\) Average Specific Weight of the Formation \(\left(\mathrm{p} / \mathrm{cm}^{3}\right)\)
Formula(s)
\[
\gamma_{\text {formation }}=(1-\varnothing) \gamma_{\min }+\varnothing \cdot \gamma_{L i q}
\]
Reference(s)
Saydam, T., (1967). Principles of Hydraulic Fracturing, ARI Publishing Co., Page: 5.