Designing facilities for CO2 transport and injection requires a thorough analysis of the relevant degradation modes. This includes such effects as wet upsets in nominally “dry” CO2, running ductile fracture in CO2 fluid, stability of elastomers and low temperatures associated with CO2 depressurization. If existing facilities are to be used, an assessment of their integrity status with a view to CO2 service has to be performed as well.

A case involving such an analysis is described. Next to internal corrosion and low temperature embrittlement, specific aspects considered are:

  • effect of impurities in CO2

  • running fracture of the export pipeline

  • internal epoxy flow coating stability

  • valve material compatibility with CO2

  • well completion aspects

Materials selection and corrosion control to mitigate potential threats to integrity are summarized. The work provides an outline of a framework that can serve to manage integrity in operation.

Subject
Water, Materials, Piping, Valves, Pipelines, Epoxy coatings, Impurities, Wall thickness, Steel, Elastomers, Fracture, Ductile fracture, Hydrocarbons
Keywords:
CO2, dense phase, corrosion, fracture, compatibility, integrity
© 2013 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).
2013
Association for Materials Protection and Performance (AMPP)
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