The user-friendliness and the accuracy of various methods to calculate corrosion rates in sweet gas production tubing was evaluated by comparing the predictions with results of mechanical caliper surveys, weightloss coupons and time to tubing leaks. It is concluded that the physical conditions in the wells in terms of liquid water presence and flow regimes are modeled adequately. The corrosion rates are generally exaggerated by the predictions. The most important factors influencing the corrosion are discussed as are the usefulness of caliper inspections and weightloss coupons to monitor corrosion. Experience with internal plastic coatings and batch inhibition is reported.

Subject
Water, Corrosion rate, Predicted corrosion rate, Calipers, Liquids, Flowlines, Tubing, Wellheads, Defects, Corrosion modeling, Corrosion inhibitors, De Waard corrosion model, Corrosion coupons
© 1995 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).
1995
Association for Materials Protection and Performance (AMPP)
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