Sonic Derived Porosity- Shale Corrected - Dresser Atlas (1979)

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Sonic Derived Porosity- Shale Corrected - Dresser Atlas (1979)

Where:
• ɸSe= effective (shale-corrected) sonic porosity
• ɸS= sonic porosity
• ɸSsh= sonic porosity in a nearby shale
• Vshale= volumen de arcillas
• Δtlog= interval transit time of the formation (from the sonic log)
• Δtma= matrix interval transit time
• Δtfl= fluid interval transit time
• Δtsh= interval transit time in a nearby shale

Calculate Sonic Derived Porosity
Δtlog (µs/ft)		Δtma (µs/ft)
Δtfl (µs/ft)		Δtsh (µs/ft)
Vsh (dec)

Results

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Calculate Sonic Derived Porosity - Results
Δtlog (µs/ft)	Δtma (µs/ft)	Δtfl (µs/ft)	Δtsh (µs/ft)	Vsh (dec)	ɸse (dec)	ɸse (%)
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Made by Henry Herrera