Corrosion and erosion remain two key issues in petroleum production. In the last few years, there has been an increasing demand for online process control where the rate of metal loss may be monitored. From an ultrasound perspective these challenges reduce to measuring the wall thickness over time. By combining permanently installed sensors, low noise measurements and temperature compensation, lab experiments have shown that it is possible to detect changes in wall thickness on the sub micrometer scale. The results suggest that ultrasound technology is well suited for real time corrosion monitoring applications, and that it may be used for inhibitor control and optimization as well.

Subject
Materials, Corrosion rate, Confidence intervals, Moduli, Thickness measurement, Thermal expansion, Pipelines, Corrosion detection, Transducers, Constants, Wall thickness, Steel, Linear polarization resistance
Keywords:
Ultrasound, real time monitoring, temperature compensation, high resolution
© 2008 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).
2008
Association for Materials Protection and Performance (AMPP)
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