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Indicators02:39

Indicators

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Certain organic substances change color in dilute solution when the hydronium ion concentration reaches a particular value. For example, phenolphthalein is a colorless substance in any aqueous solution with a hydronium ion concentration greater than 5.0 × 10−9 M (pH < 8.3). In more basic solutions where the hydronium ion concentration is less than 5.0 × 10−9 M (pH > 8.3), it is red or pink. Substances such as phenolphthalein, which can be used to determine the pH of a solution, are...
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Sensitive Monitoring of the Minimum Inhibitor Concentration under Real Inorganic Scaling Scenarios.

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This study introduces a low-cost impedimetric sensor for real-time monitoring of scale formation in oil and gas operations. The developed method accurately determines the minimum inhibitor concentration (MIC), preventing pipeline blockages and ensuring supply chain continuity.

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Area of Science:

  • Petroleum Engineering
  • Materials Science
  • Chemical Engineering

Background:

  • Flow assurance is critical for safe and efficient oil and gas transport.
  • Scale formation poses a significant challenge, potentially causing pipeline blockages.
  • Accurate determination of minimum inhibitor concentration (MIC) is essential for effective scale prevention.

Purpose of the Study:

  • To develop a sensitive and low-cost impedimetric platform for monitoring scale formation.
  • To accurately assess the minimum inhibitor concentration (MIC) of antiscale products.
  • To provide a readily deployable solution for real-time scale monitoring in oil and gas industries.

Main Methods:

  • Utilized a simple and low-cost impedimetric platform.
  • Monitored scale formation on stainless-steel capillaries under simulated topside and subsea conditions.
  • Compared the sensor's performance against the conventional tube blocking test (TBT).

Main Results:

  • The impedimetric sensor continuously gauged scale formation with high sensitivity.
  • The method accurately determined MIC, validated by scanning electron microscopy.
  • The sensor outperformed TBT, avoiding the negative deviations observed with the conventional approach.

Conclusions:

  • The developed impedimetric platform offers a user-friendly and accurate solution for scale formation monitoring.
  • This technology enables early-stage detection of salt precipitation and precise MIC determination.
  • The readily deployable sensor combats scale issues, enhancing oil and gas flow assurance.