A multi-technique electrochemical corrosion monitoring approach was used to differentiate between general and localized corrosion activity in a water injection system. The data obtained clearly identified, in real-time, the localized corrosion that resulted in failures in the system. This approach showed benefit over and above 'conventional' corrosion monitoring techniques (e.g. Linear Polarization Resistance and coupons) that had failed to identify the corrosion risk or enable an assessment of cause. Subsequent to identifying the type of corrosion in the system, the real-time corrosion monitoring enabled a suitable corrosion inhibitor to be identified and optimized in the field to mitigate the corrosion. The findings from the study have been confirmed by weight loss coupon data and 'conventional' monitoring techniques after implementation of a treatment program using the optimized corrosion inhibitor formulation.

Subject
Corrosion rate, Instrumentation, General corrosion rate, Chemical inhibition, Corrosion inhibitors, Water injection, Corrosion data, Pitting, Corrosion coupons, Localized corrosion, Linear polarization resistance, Pitting factor, Types of corrosion
Keywords:
corrosion, general, localized, pitting, electrochemical, monitoring, inhibitor, formulation
© 2006 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2006
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.