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Capillarity in Fluid

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Related Experiment Videos

Coupling Microfluidics Data with Core Flooding Experiments to Understand Sulfonated/Polymer Water Injection.

Muhammad Tahir1, Rafael E Hincapie1, Nils Langanke1

  • 1Institute of Subsurface Energy Systems, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany.

Polymers
|June 3, 2020
PubMed
Summary
This summary is machine-generated.

Injecting modified low-salinity water with polymers enhances oil recovery by altering fluid interfaces and wettability. This method yields approximately 6% more oil than using synthetic seawater, offering a cost-effective enhanced oil recovery strategy.

Keywords:
EORfluid-fluid interactionpolymer degradationpolymer-floodingrecovery factorviscoelasticitywettability

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Area of Science:

  • Petroleum Engineering
  • Enhanced Oil Recovery (EOR)
  • Fluid Dynamics

Background:

  • Modified water injection, particularly low-salinity and sulfate-modified water, shows promise for enhanced oil recovery (EOR).
  • Understanding the mechanisms of fluid-fluid interfacial interactions and wettability alteration is crucial for optimizing EOR strategies.

Purpose of the Study:

  • To evaluate the influence of low-salinity/sulfate-modified water injection on oil recovery.
  • To investigate the underlying recovery mechanisms through coupled microfluidics and core flooding experiments.

Main Methods:

  • Detailed rheological characterization (steady shear, in-situ viscosity) of fluids.
  • Single and two-phase micromodel experiments to observe fluid behavior.
  • Core flooding experiments to simulate reservoir conditions.

Main Results:

  • Coupled microfluidics and core flooding confirmed that interfacial interactions and wettability alteration are key mechanisms for modified-water/low-salt EOR.
  • Sulfate-modified/low-salinity water combined with polymer flood achieved ~6% higher oil recovery compared to synthetic seawater with polymer.

Conclusions:

  • Modified water injection, especially sulfate-modified/low-salinity water, is an effective EOR method.
  • Combining microfluidics and core flooding provides valuable insights into fluid-fluid and rock-fluid interactions for EOR process evaluation.