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08286 Real Time Corrosion Monitoring to Assess the Corrosivity of Oil Water Mixtures and the Kinetics of the Response of Corrosion Inhibitors

Picture for 08286 Real Time Corrosion Monitoring to Assess the Corrosivity of Oil Water Mixtures and the Kinetic
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Product Number: 51300-08286-SG
ISBN: 08286 2008 CP
Author: W. Villamizar, C. Magana, H. Chow, J. Gonzalez, M. Casales, and L. Martínez
Publication Date: 2008
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$20.00
In this paper, we report experiences assessing real time corrosion inhibitors performance employing corrosion inhibitors currently used in the field in the Gulf of Mexico. The onset of the corrosion inhibitor performance in reducing the corrosion rate was clearly monitored in seven minutes intervals after the inhibitor application. By controlling the inhibitor concentration in the range of 5 to 100 ppm, corrosion rates are determined in time evolution from over 150 mpy to less than 1 mpy in the best performing chemical treatments. The real time corrosion monitoring equipment which includes several techniques: linear polarization resistance (LPR), harmonic analysis (HA), and electrochemical noise (EN). Environments include 3 % NaCl solution with and without 10 % diesel, saturated with CO2 at 50°C. Both, LPR and HA techniques had a quick answer, within 7 minutes, however, HA showed big fluctuations although similar trend in the corrosion rate to those given by the LPR technique.
In this paper, we report experiences assessing real time corrosion inhibitors performance employing corrosion inhibitors currently used in the field in the Gulf of Mexico. The onset of the corrosion inhibitor performance in reducing the corrosion rate was clearly monitored in seven minutes intervals after the inhibitor application. By controlling the inhibitor concentration in the range of 5 to 100 ppm, corrosion rates are determined in time evolution from over 150 mpy to less than 1 mpy in the best performing chemical treatments. The real time corrosion monitoring equipment which includes several techniques: linear polarization resistance (LPR), harmonic analysis (HA), and electrochemical noise (EN). Environments include 3 % NaCl solution with and without 10 % diesel, saturated with CO2 at 50°C. Both, LPR and HA techniques had a quick answer, within 7 minutes, however, HA showed big fluctuations although similar trend in the corrosion rate to those given by the LPR technique.
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