This paper presents results from comparative laboratory tests of three internal plastic coatings used by one oil company for corrosion control in gas well tubulars. Prior to the testing program, coated tubulars from three different applicators were provided by supplier warehouses as equivalent materials for use in sweet gas well service. Coatings evaluations included autoclave, rocker arm, acid resistance and wireline abrasion testing. Tests were designed to compare coating performance under harsh conditions such as high water production or high-temperature, high-pressure conditions. This was done to accelerate the testing program, but also to identify any superior product(s). Test results showed that the three coatings are not equivalent, and that each coating has strengths in certain environments.

Subject
Acids, Test methods, Coating performance, Coatings, Wirelines, Autoclaves, Tubing, Corrosion losses, Coating adhesion, Test environments, Internal coatings, Blistering, Abrasion resistance
Keywords:
internal plastic coatings, carbon dioxide, autoclave tests, rocker arm test, acid resistance, wireline abrasion resistance, gas well tubulars
© 1997 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).
1997
Association for Materials Protection and Performance (AMPP)
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