Several test methods have been utilised to characterise the sulphide stress cracking (SSC) behaviour of tubular materials in sour service environments. The results have been analysed to predict the long term exposure behaviour of a range of downhole tubular steels. This has led to a better definition of suitability of tubular steels for sour service applications enabling the selection of the most suitable and cost effective material for specific use. The environmental variables studied have been confined to pH and H2S partial pressure, combinations of which cover most aspects of sour service exposure. The results have shown that the in-situ pH is at least as important as H2S partial pressure for determining the resistance of tubulars to SSC.

Subject
Test methods, Strain rate, Materials, Stress intensity, Materials performance, Stress cracking, Partial pressures, Acidity, Solution chemistry, Mechanical failure, Steel, Carbon steel, Sulfide stress cracking
Keywords:
Sulphide Stress Cracking, Solution Chemistry, Carbon Steel, 13% Cr Steel, Domain Criteria
© 1991 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).
1991
Association for Materials Protection and Performance (AMPP)
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