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Quantifying mineral surface energy by scanning force microscopy.

Bastian Sauerer1, Mikhail Stukan2, Wael Abdallah1

  • 1Schlumberger Middle East, S.A., Schlumberger Dhahran Carbonate Research Center, Dhahran Techno Valley, P.O. Box 39011, Dammam 31942, Saudi Arabia.

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Summary
This summary is machine-generated.

This study introduces a new method using scanning force microscopy (SFM) to measure the surface energy of carbonate rocks. This technique aids in predicting reservoir wettability for enhanced oil recovery strategies.

Keywords:
CalciteDolomiteSFMSurface energyWettability

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Area of Science:

  • Geochemistry
  • Materials Science
  • Petroleum Engineering

Background:

  • Understanding carbonate reservoir wettability is crucial for optimizing oil recovery.
  • Conventional methods for surface energy determination have limitations in scale and accuracy.

Purpose of the Study:

  • To develop and validate a novel method for quantifying the surface energy of carbonate rocks.
  • To establish a reliable protocol for predicting reservoir wettability using surface energy measurements.

Main Methods:

  • Utilized scanning force microscopy (SFM) for direct, quantitative force measurements at the sub-micron scale.
  • Performed local adhesion force measurements on calcite and dolomite samples in various fluid environments (air, polar, nonpolar).

Main Results:

  • Successfully determined the surface energy, including polar and nonpolar components, of carbonate minerals.
  • Demonstrated the feasibility of quantifying surface energy through SFM-based adhesion measurements, with results aligning with existing literature.
  • Established a proof-of-principle protocol for surface energy quantification.

Conclusions:

  • The SFM-based adhesion measurement technique offers a novel and accurate approach to characterize reservoir rock wettability.
  • This methodology complements traditional contact angle measurements by providing sub-micron scale insights.
  • The developed protocol has the potential to become a new standard for fast and accurate surface energy determination in reservoir characterization.