Assertion: porosity | /r/HasProperty | ϕ \displaystyle \phi
Facets:
Source sentences:
text: Assuming that the measured bulk density ( ρ bulk {\displaystyle \rho _{\text{bulk}}} ) only depends on matrix density ( ρ matrix {\displaystyle \rho _{\text{matrix}}} ) and fluid density ( ρ fluid {\displaystyle \rho _{\text{fluid}}} ), and that these values are known along the wellbore, porosity ( ϕ {\displaystyle \phi } ) can be inferred by the formula