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Further Studies on Phase Relationships in Chemical Flooding

  • R. C. Nelson

Abstract

Additional experimental evidence continues to support the idea that local phase equilibrium is approached closely in an oil reservoir under chemical flood. Since phases formed inside the pore space of the rock generally are not of equal mobility, components of the chemical slug may separate during the flood if they partition differently among the phases. Under certain conditions excess brine phases, generated in the mixing zone between the chemical slug and the oil bank, can sweep ahead of surfactant-rich, micro-emulsion phases creating, thereby, an in situ preflood.

Keywords

Surfactant Concentration Middle Phase Optimal Salinity Multivalent Cation Formation Brine 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1981

Authors and Affiliations

  • R. C. Nelson
    • 1
  1. 1.Shell Development CompanyHoustonUSA

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