Calculate Neutron-Density Porosity - Shale corrected - Dewan (1983)

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Neutron-Density Combinaton Porosity- Shale corrected- Dewan (1983)

Dewan (1983) also proposed a shale correction to porosity values obtained from the combination of neutron and density well logs. This expression is represented as the square root of the sum of the squared shale corrected porosity values of each well log (neutron and density). The ecuation is expressed the following way:

Where:
• ɸND= neutron-density porosity- shale corrected
• ɸDe= density porosity- shale corrected
• ɸNe= neutron porosity- shale corrected

Porosity - Neutron-Density (ɸnd) - Shale corrected- Dewan (1983)
ɸne: Decimal		ɸde: Decimal

Made by Henry Herrera