The recent NACE IMPACT1 study on the role of corrosion management in controlling the cost of asset corrosion refocused industry on the high cost of operational failures. This paper narrows that focus to a cost versus performance study on the role of thermoplastic liners (TPL) in controlling costs associated with the protection of downhole oil and gas production tubulars from internal wear and corrosion.

While it is accepted that many different types of wear and corrosion mechanisms can contribute to downhole failures, it is common for oilfield subsurface engineers to discuss the absolute corrosion or wear resistance of a material or product based on unrelated applications. Material properties and test procedures are reviewed for their practicality in helping to identify nonmetallic solutions that address the typical causes of downhole tubing failures. Several field studies are presented with accompanying financial data that compare available commercial products and practices used to mitigate corrosion and wear. Additionally, the cost effectiveness of thermoplastic liners is analyzed using a realistic model to evaluate financial benefits over various lengths of service. The costs of downhole failures are included to further quantify the financial benefits from extending the Mean Time Between Failures (MTBF) for each well.

Subject
Wear, Costs, Materials failure, Corrosion failures, Materials, Couplings, Rods, Tubing, Case studies, Sucker rods, Corrosion protection, Thermoplastics, Oil
Keywords:
Downhole Corrosion, Rod Wear, Thermoplastic liners, economics, tubing failures, Internal Pipe Liners
© 2017 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).
2017
Association for Materials Protection and Performance (AMPP)
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