The paper reviews the “windows” where protective films are formed when corrosive gases, H2S, CO2, and mixtures of H2S and CO2 are present in the production of gas and oil. Parameters affecting the protective nature of the films include, temperature, partial pressure of acid gas, pH, brine content, and velocity. Guidelines for determining the conditions where protective films will be generated under production conditions are reviewed.

Subject
Water, Iron sulfide films, Corrosion rate, Iron sulfides, Iron carbonate films, Protective films, Partial pressures, Corrosion products, Film formation, Steel, Pitting, Carbon steel, Corrosion protection
Keywords:
internal pipeline corrosion, H2S, CO2, protective films
© 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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