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| LaTeX Math Block | ||
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\phi_e = \frac{V_\phi}{V_r} |
The reason to introduce this concept is that a part of the actual inter-grain void is filled with shale thus reducing the actual volume available for fluids.
It splits into two components: open porosity
and closed porosity LaTeX Math Inline body \phi_{\rm opn}
:LaTeX Math Inline body \phi_{\rm cls}
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