Resistivity derived porosity - Flushed Zone - Residual Hydrocarbons Correction

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Resistivity derived porosity - Flushed Zone - Residual Hydrocarbons Correction

Where:
• ɸ= porosity
• a= tortuosity factor
• Sw= water saturation of the uninvaded zone
• m= cementation exponent
• n= saturation exponent
• Rmf= resistivity of the mud filtrate at formation temperature
• Rxo= shallow resistivity from a very shallow reading device such as lateolog-8, microspherically focused log, or microlaterolog

Calculate Porosity (ɸ)
a		Rmf (ohm-m)
Rxo (ohm-m)		Sw (dec)
n		m

Results

Porosity (ɸ) - Results
a	Rmf (ohm-m)	Rxo (ohm-m)	Sw (dec)	n	m	ɸ (dec)	ɸ (%)

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Made by Henry Herrera