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Updated: Dec 24, 2025

The Quantification of Injectability by Mechanical Testing
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Polymer Injectivity Test Design Using Numerical Simulation.

Mohamed Adel Alzaabi1, Jørgen Gausdal Jacobsen1,2, Shehadeh Masalmeh3

  • 1Department of Chemistry, University of Bergen, 5007 Bergen, Norway.

Polymers
|April 9, 2020
PubMed
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Polymer injectivity tests provide crucial data on fluid behavior for enhanced oil recovery. Optimizing these tests helps understand polymer rheology and improve project design.

Area of Science:

  • Petroleum Engineering
  • Chemical Engineering
  • Materials Science

Background:

  • Polymer flooding is a key enhanced oil recovery (EOR) technique utilizing water-soluble polymers to increase injection water viscosity.
  • Polymers exhibit complex non-Newtonian behavior, with viscosity dependent on shear rate, impacting injectivity in porous media.
  • Understanding polymer rheology is vital for optimizing polymer flood projects and preventing injectivity issues.

Purpose of the Study:

  • To determine the valuable information obtainable from polymer injectivity tests.
  • To establish optimal test designs for maximizing data acquisition on polymer rheology.
  • To enhance the understanding and application of polymer flooding in the oil industry.

Main Methods:

  • Conducting simulation studies to analyze the impact of non-Newtonian rheology on bottom-hole pressure (BHP).
Keywords:
chemical EORin situ rheologypolymer floodingpolymer injectivitypolymer modeling

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  • Investigating the response of BHP under varying injection rates and durations.
  • Utilizing injection bottom-hole pressure as the primary data source for rheological analysis.

    • Main Results:

    • Simulation results demonstrate that BHP is sensitive to different non-Newtonian rheological models.
    • Variations in injection rate and time significantly influence the BHP response.
    • Polymer injectivity tests, analyzed via BHP, can effectively detect in-situ polymer rheology.

    Conclusions:

    • Polymer injectivity tests are a valuable tool for characterizing in-situ polymer rheology.
    • Optimized test designs can yield more comprehensive data for improved polymer flood EOR.
    • Accurate rheological understanding from injectivity tests enhances the efficiency and success of polymer flood projects.