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LaTeX Math Block
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\sigma_f = s_w \cdot \sigma_w(T) + s_o \cdot \sigma_o(T) + s_g \cdot \sigma_g(T)

where

LaTeX Math Inline
bodys_w, \, s_o, \, s_g

volumetric fractions of water, oil and gas phases

LaTeX Math Inline
body\sigma_w(T), \, \sigma_o(T), \, \sigma_g(T)

electrical conductivity of the water, oil and gas phases

LaTeX Math Inline
bodyT

fluid temperature


In many practical applications the 

See Also

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Petroleum Industry / Upstream /  Data Acquisition / Well & Reservoir Surveillance / Well logging / Cased-Hole Logging / Production Logging (PLT) Borehole Flow Profile (BFP) / Fluid Conductivity Log (FCOND)

...