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Indonesia Model (Poupon-Leveaux)

Indonesia model is the same Archie model:

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anchorIndonesia
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\frac{1}{R_t} = \frac{\phi_e^m \, s_w^n }{A R_w} \quad \Rightarrow \quad s_w = \Big (  \frac{A}{\phi_e^m} \; \frac{R_w}{R_t} \Big) ^{1/n}

where constant 

LaTeX Math Inline
bodyA
 is defined by formation shaliness
LaTeX Math Inline
bodyV_{sh}
:

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\frac{1}{A} = 1 + \Big( \frac{V_{sh}^{2-V_{sh}}}{\phi_e} \, \frac{R_w}{R_{sh}}  \Big)^{1/2}  

where

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LaTeX Math Inline
bodyR_{sh}

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Excerpt Include
Indonesia Model (Poupon-Leveaux) @model
Indonesia Model (Poupon-Leveaux) @model
nopaneltrue

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Simandeux Model

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Simandeux model suggest a more complicated correlation between resitvity 

LaTeX Math Inline
bodyR_t
 and water saturation 
LaTeX Math Inline
bodys_w
:

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