Gas pipelines carrying both liquid and gas phases frequently exhibit annular flow conditions. This is a condition when the liquids travel on the pipe wall in a very thin film around the entire internal circumference of the pipe. This concept is illustrated in figure 1. With this picture of the travel of corrosive fluids in pipelines, it is obvious that monitors which are not located in the pipe wall and do not see the same liquid conditions as the pipe wall will not be representative of the actual corrosion in the pipeline. This had led us to investigate what are the conditions that exist in a gas pipeline and try to derive an equation which explains the existence of thin films and aids in predicting when they will be present.
Subject
Thin films,
Water,
Piping,
Corrosion rate,
Probes,
Walls,
Pipelines,
Gas velocity,
Liquid films,
Liquids,
Film thickness,
Corrosion probes,
Hydrocarbons
© 1976 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).
1976
Association for Materials Protection and Performance (AMPP)
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