Typical flow patterns for a gas-oil-water flow encountered in pipelines with elevation changes are three-phase stratified types of flows (stratified or annular) and slug flow, where water and oil phases may not be completely mixed; and gas mixed-liquid two-phase slug flow and stratified flow, where water and oil phases are mixed. This paper reviews a number of effects of flow on the various aspects of corrosion, i.e., whether water is in continuous contact with the pipe wall, what the clock positions of contact are to the pipe wall, and how to couple the flow characteristics with corrosion rate prediction. This paper also presents a case study to illustrate methods to employ such flow simulation results and In-line-Inspection data to prioritize locations for corrosion monitoring and inspections.

Subject
Flow patterns, Water, Piping, Modeling, Corrosion rate, Flow velocity, Walls, Slug flow, Solids, Pipelines, Liquids, Stress, Oil
Keywords:
three-phase flow, mechanistic model, transition of flow, slug stress, cumulative corroded volume
© 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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