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.