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Standing’s Relative Permeability Correlation (Part 1--Introduction)

Standing’s Relative Permeability Correlation (Part 1--Introduction). Review of Effective Permeability. Effective permeability is a function of pore size & pore size distribution wettability saturation saturation history. Review of Relative Permeability. The base permeability can be

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Standing’s Relative Permeability Correlation (Part 1--Introduction)

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  1. Standing’s Relative PermeabilityCorrelation (Part 1--Introduction)

  2. Review of Effective Permeability • Effective permeability is a function of • pore size & pore size distribution • wettability • saturation • saturation history

  3. Review of Relative Permeability • The base permeability can be • ka, dry air permeability at patm • k, absolute permeability • ko]Siw, oil permeability at irreducible water saturation

  4. Saturation History • Nomenclature • drainage: kro]dr • imbibition: kro]imb • Water-oil system, water wetting

  5. Saturation History • Nomenclature • drainage: kro]dr • imbibition: kro]imb • Gas-oil system, liquid wetting

  6. Saturation History • Application • Data must match reservoir process

  7. Fundamental Concepts • Fluids in pores are under capillary control • krw depends on mobile water, (Sw-Siw) • krg depends on gas present, Sg • kro depends on oil present, So, and the pore size in which it lies • Each fluid moves through separate groups of pores and tends to block flow of other fluids

  8. Effective Saturations

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