An automated field instrument has been used to on-line monitor the corrosion process in oil and gas production systems in order to minimize the corrosion damage and improve the asset integrity management in a real-time manner. This paper describes an example of a laboratory study using an automated field instrument to rapidly screen corrosion inhibitors for service in wet acid gas containing environments. Laboratory corrosion tests conducted according to ASTM G170 included bubble test and rotating cylinder electrode test. Additionally, another example of field evaluation of corrosion inhibitors in a sour gas pipeline is presented to address the practical application of the instrument for the process control in oil and gas production.

Subject
Rotating cylinder electrodes, Inhibitor performance, Corrosion rate, Pipelines, Dosages, Instrumentation, Bubbling, Inhibitor treatment, Inhibition efficiency, Corrosion inhibitors, Pitting, Linear polarization resistance, Pitting factor
Keywords:
Linear Polarization Resistance (LPR), Electrochemical Noise (EN), Harmonic Distortion Analysis (HDA), Oilfield Inhibitors
© 2009 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).
2009
Association for Materials Protection and Performance (AMPP)
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