Selection of appropriate corrosion resistant alloys (CRAs) for oil and gas service is a complex and challenging task. The complexity stems from the large number of potential CRA material candidates to be considered, and the need to characterize material response to a diverse range of corrosive operating conditions and, consequently, assess resistance to general corrosion, localized corrosion, SSC, SCC, hydrogen embrittlement and other performance criteria. Such characterization requires integrating metallurgical insights and corrosion modeling with significant data from lab and field to generate rules for CRA material evaluation and selection. This paper details the underlying framework of data and rules for a software systemΨ that the authors have developed over the last fifteen years, a rigorous, comprehensive tool that automates evaluation of different types of stainless steels, Nickel-based alloys and other CRAs through incorporation of deep material selection expertise integrated with large databases related to material characterization for corrosion and cracking.

Further, development of an equipment procurement system based on the material selection is also described in this paper. This equipment procurement system automates the generation of procurement specifications for comprehensive wellhead trims and Christmas tree components. Wellhead ordering requirements are generated as a function of multiple corrosion and material characterization parameters, and the system also generates specifications for sub-surface safety valves and production tubing.

Subject
Hydrogen sulfide, Materials, Corrosion resistant alloys, Valves, Sour environments, Materials selection, Procurement, Wellheads, Equipment, Pitting, Stainless steel, Sulfide stress cracking, Stress corrosion cracking
Keywords:
CRA selection, corrosion, cracking, valve, trim specs, subsurface safety valves, SSSV, corrosion prediction, material selection, software systems
© 2005 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).
2005
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.