Shale compaction

Input(s)

$\varnothing$: Porosity (fraction)

3: Second Empirical Constant from Porosity vs Vertical Stress Graph (1/MPa)

$\sigma_{\mathrm{v}}$: Vertical Effective Stress $(\mathrm{MPa})$

Output(s)

$\emptyset_{\mathrm{e}}$: Shale Compaction (fraction)

Formula(s)

$$ \varnothing_{\mathrm{e}}=\varnothing * \mathrm{e}^{-\beta_{*} \sigma_{\mathrm{v}}} $$

Reference(s)

Mark D. Zoback, Reservoir Geomechanics, Cambridge University Press, UK, Page: 46.