This paper describes some results of a research program on lifetime of gas/oil equipment for deep water which is in progress in Norway.

Parameters connecting severe material loss and environment are described in some detail. Particle erosion in high pressure gas and liquids and the effect of particle erosion mechanism on corrosion of stainless steels is demonstrated by experimental results and theoretical models/correlations. Inhibition of Carbon steel is discussed. Fluid flow details which seem to be connected with the material loss are briefly indicated. Corrosion prone areas for all steels i.e. water wetting is included. The paper then briefly describes an integrated prediction model for material loss of both Carbon steel with and without inhibitor and stainless steels. This model combines process-simulation, multiphase fluid-and particle flow mechanics and the resulting material loss mechanisms.

Finally, is given an example of prediction of limiting production rate with the integrated model for a large diameter and long distance flowline which is buried in the seabed and which terminates in a bend and a gas/liquid separator. Several of the aspects presented address material loss problems occuring also in land based industry.

Subject
Water, Electrochemical corrosion, Materials, Piping, Sand, Corrosion rate, Mass loss, Liquids, Corrosion attacks, Tubing, Corrosion modeling, Fluids, Erosion
© 1987 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).
1987
Association for Materials Protection and Performance (AMPP)
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