Shale Volume - SP

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Shale Volume - SP

Where:
• Vshale= volume of shale
• PSP= pseudostatic spontaneous potential (maximum SP of shaly formation)
• SSP= static spontaneous potential of a nearby thick clean sand

Calculate Shale Volume (Vsh) - SP
PSP (mV)		SSP (mV)
Result (dec) Result (%)

Results

Vsh - SP - Results
PSP (mV)	SSP (mV)	Vsh (dec)	Vsh (%)

The other alternative to calculate shale volume is the following one:

Where:
• SPshale= value of SP in a shale (usually assumed to be zero)

Calculate Vsh - SP
PSP (mV)		SSP (mV)
SPshale (mV)
Result (dec) Result (%)

Results

Vsh - SP Results
PSP (mV)	SSP (mV)	SPshale (mV)	Vsh (dec)	Vsh (%)

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Made by Henry Herrera