The present study focuses on the numerical evaluation of Archie’s coefficients – specifically, the cementation parameter and saturation exponent – using a digital model of a high-permeability rock sample. Accurate estimation of these parameters is critical for reservoir development planning and optimizing hydrocarbon recovery through formation stimulation techniques. To derive the coefficients, we construct two relationships: the formation factor versus porosity and the resistivity index versus water saturation. The paper presents a methodology and case studies for establishing these dependencies. The proposed approach involves solving two optimization problems to perform a linear regression in a logarithmic scale, based on both the generalized and classical forms of Archie’s law.

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Constructing Dependence of Electrical Parameters on Porosity and Water Saturation for Digital Models of High-Permeability Rock Samples

  • Tatyana Khachkova,
  • Vadim Lisitsa,
  • Vladislav Krutko,
  • Alexander Avdonin

摘要

The present study focuses on the numerical evaluation of Archie’s coefficients – specifically, the cementation parameter and saturation exponent – using a digital model of a high-permeability rock sample. Accurate estimation of these parameters is critical for reservoir development planning and optimizing hydrocarbon recovery through formation stimulation techniques. To derive the coefficients, we construct two relationships: the formation factor versus porosity and the resistivity index versus water saturation. The paper presents a methodology and case studies for establishing these dependencies. The proposed approach involves solving two optimization problems to perform a linear regression in a logarithmic scale, based on both the generalized and classical forms of Archie’s law.