This paper reviews the effect of low molecular weight organic acids (acetic, propionic, butyric) on corrosion rates in the presence of CO2. Recent papers point out concentrations of acetic acid in produced fluids as low as 100 ppm in the gas phase can cause corrosion attack as a result of thinning of the iron carbonate corrosion product layer. The effect of the mineral content of the produced water is also discussed. Laboratory methods for determining the concentration of low concentrations of organic acids are discussed. Laboratory and field data are presented.

Subject
Water, Acid concentration, Corrosion rate, Top of the line corrosion, Sodium chloride, Bicarbonates, Acetates, Acidity, Sodium chloride solution, Organic acids, Ion concentrations, Corrosion inhibitors, Acetic acid
Keywords:
CO2 corrosion, acetic acid, organic acids, buffer, top of line corrosion
© 2004 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).
2004
Association for Materials Protection and Performance (AMPP)
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