Calculate Apparent Water Resistivity (Rwa) - Archie

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Apparent Water Resistivity (Rwa) - Archie

The apparent water resisitivity (Rwa) can be calculated from Archie's equation, and this includes the values of true formation resistivity, porosity, tortuosity factor and cementation exponent. The expression is summarized the following way:

Where:
• Rwa= apparent resistivity of formation water
• Rt= true formation resistivity as derived from a deep reading resistivity log
• ɸ = porosity
• a= tortuosity factor
• m= cementation exponent

Calculate Apparent Water Resistivity (Rwa)- Archie

Calculate Apparent Water Resistivity (Rwa)
Rt: ohm-m		ɸ: Decimal
m:		a:

Made by Henry Herrera