Abstract
Fatigue testing was carried out primarily on a medium strength low alloy steel manufactured for use in sour environments. The testing was done in a sour brine solution that simulated drilling fluid. Test variables included hydrogen sulfide overpressure, stress ratio, fatigue test frequency and test temperature. Sour fatigue thresholds were increased compared to non-sour conditions, particularly as the fatigue cycling frequency was decreased, as the stress ratio was decreased and as the testing temperature was increased. The increases correlated with crack closure effects from the corrosion products. Implications for operations in sour environments are discussed.
© 1999 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).
1999
Association for Materials Protection and Performance (AMPP)
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