Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

51318-10636-Oil and Gas Field Corrosion Inhibitor Performance Validation Implementation of EIS

Picture for Oil and Gas Field Corrosion Inhibitor Performance Validation Implementation of EIS
Available for download

Results, interpretation, benefits and limits of using electrochemical impedance spectroscopy (EIS). Results reveal CI protection/failure mechanisms under specific test conditions.

Product Number: 51318-10636-SG
Author: J. Sonke / W.M. Bos
Publication Date: 2018
Industry: Science of Corrosion
$0.00
$20.00
$20.00

Application of corrosion inhibition in upstream oil and gas production is the way protect carbon steel against internal process corrosion. Test methods have been developed that mimic field conditions and test corrosion inhibitors (CI). Testing includes long-term (500 hr) tests to evaluate local effectiveness. A test program typically includes validation of CI performance at several conditions to qualify for its full operating range. This includes impact of water chemistry, acidic gasses (CO2 and/or H2S), temperature, shear stress, etc.

Validation and interpretation of test results can sometimes be complicated. Corrosion rates are generally reported based on weight loss, visual assessment and linear polarization resistance (LPR) measurements. These results often lead to a pass/fail outcome without providing insight into the protection mechanisms and failure modes.

Electrochemical impedance spectroscopy (EIS) is an electrochemical measurement technique that may help to reveal protection mechanisms and provide insight for optimisation of CI testing and application. For this reason, EIS measurements were introduced in support of standard CI test methods. This work outlines the results, provides interpretation and identifies the benefits and limits of using EIS. Based on the results guidelines are formulated for using EIS. The results revealed CI protection/failure mechanisms under specific test conditions.

Key words: Corrosion Inhibition, Electrochemical Impedance Spectroscopy, Corrosion Inhibitor Testing, Wall Shear Stress, Scaling.

Application of corrosion inhibition in upstream oil and gas production is the way protect carbon steel against internal process corrosion. Test methods have been developed that mimic field conditions and test corrosion inhibitors (CI). Testing includes long-term (500 hr) tests to evaluate local effectiveness. A test program typically includes validation of CI performance at several conditions to qualify for its full operating range. This includes impact of water chemistry, acidic gasses (CO2 and/or H2S), temperature, shear stress, etc.

Validation and interpretation of test results can sometimes be complicated. Corrosion rates are generally reported based on weight loss, visual assessment and linear polarization resistance (LPR) measurements. These results often lead to a pass/fail outcome without providing insight into the protection mechanisms and failure modes.

Electrochemical impedance spectroscopy (EIS) is an electrochemical measurement technique that may help to reveal protection mechanisms and provide insight for optimisation of CI testing and application. For this reason, EIS measurements were introduced in support of standard CI test methods. This work outlines the results, provides interpretation and identifies the benefits and limits of using EIS. Based on the results guidelines are formulated for using EIS. The results revealed CI protection/failure mechanisms under specific test conditions.

Key words: Corrosion Inhibition, Electrochemical Impedance Spectroscopy, Corrosion Inhibitor Testing, Wall Shear Stress, Scaling.

Product tags
Also Purchased
Picture for Guidelines for Corrosion Inhibitor Selection for Oil and Gas Production
Available for download

Guidelines for Corrosion Inhibitor Selection for Oil and Gas Production

Product Number: 51317--8842-SG
ISBN: 8842 2017 CP
Author: Johannes Sonke
Publication Date: 2017
$20.00

Recommended corrosion inhibitor (CI) testing methods and interpretation to assure proper execution of a test program. Associated guidance for CI test program definition testing and management to ensure and improve the integrity of carbon steels applications in our Industry.
Picture for Evaluating the impact of different families of scale inhibitors on corrosion inhibitor performance
Available for download

51318-11505-Evaluating the impact of different families of scale inhibitors on corrosion inhibitor performance

Product Number: 51318-11505-SG
Author: Ana Ferrer / Yolanda De-Abreu / Carol Roach
Publication Date: 2018
$20.00

How different families of scale inhibitors impact corrosion inhibitors performance in the presence of each other. Fundamental properties of both chemistries and how their interaction can be understood at the molecular level.
Picture for Corrosion Inhibitor Screening - Impact of Test Approaches & Conditions on Performance
Available for download

51318-11654-Corrosion Inhibitor Screening - Impact of Test Approaches & Conditions on Performance

Product Number: 51318-11654-SG
Author: Ian Carpenter / Hunter Thomson / Rodney Madjitey / Caroline M.E. Simpson
Publication Date: 2018
$20.00

This paper provides illustrative examples of how seemingly small changes to test methodology in preliminary screening tests can significantly influence the absolute performance and relative ranking of corrosion inhibitors.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support