A model for calculating the formation resistivity factor in low and middle porosity sandstone formations considering the effect of pore geometry

Pore geometry is one of the main factors that may lead Archie's equation inaccurate in low and middle porosity sandstone formations. In order to build a robust relationship between the formation resistivity factor and the porosity for the low and middle porosity sandstone formations, we presented a pore-throat model (PT model) that considered the effect of pore geometry. The PT model is an effective medium model that treats the pore space as a...