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\phi_e(\mathbf{r}, \ p) = \phi_{e0ei}(\mathbf{r}) \exp \left[ \int_{p_i}^p c_\phi(p) \, dp \right] |
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\phi_e(\mathbf{r}, \ p) = \phi_{e0ei}(\mathbf{r}) \cdot \left[ 1 + c_\phi \, (p-p_i) + 0.5 \, c_\phi \, (p-p_i)^2 \right] |
Most Subsurface E&P Disciplines (except Petrophysics) usually omit index "e" and denote Effective porosity as .Effective porosity at the initial formation pressure is usually denoted as | LaTeX Math Inline |
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body | \phi_i.See also
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Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petrophysics (PP) / Volumetric Rock Model
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