Carbon dioxide, in the presence of water, is corrosive to carbon steel oil country tubulars. CO2 and water are commonly encountered together in drilling, production and enhanced recovery operations. Internal plastic coatings have been used to effectively mitigate CO2 attack in tubulars for almost fifty years. Proper coating selection and application, followed by proper installation and care of internally plastic coated tubular goods are all critical to the ultimate success of a downhole coating. This article addresses the requirements of each of these processes. In addition, field case histories are presented to demonstrate the effectiveness of internal plastic coatings specifically designed for oil production, gas production, and enhanced recovery conditions susceptible to corrosive attack by CO2.

Subject
Primers, Coating performance, Thin films, Coating application, Coatings, Piping, Gas pressure, Coating damage, Epoxy coatings, Tubing, Internal coatings, Powder coatings, Plastics
Keywords:
CO2 corrosion, internal plastic coatings, CO2 injection, water injection, oil production, gas production, downhole tubing, coating application, coating performance
© 1994 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).
1994
Association for Materials Protection and Performance (AMPP)
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