Production of oil and gas from shale wells formations located in the Permian Basin, West Texas, has increased due to high demand. It is estimated that approximately 30 billion barrels of oil and 75 trillion cubic feet of natural gas of been produced from Permian wells since the 1920s. Due to global demand for oil and gas, Permian production is once again growing and is estimated to continue to break production records by 2027.

During oil and gas production, API 5CT L80 production tubing is commonly used. Due to the exposure to the production of oil, gas and produced water, and other chemicals the internal surface of the tubing experiences wear and corrosion.

Lately, L80 tubing failures due to various corrosion mechanisms were observed. This paper presents two case studies of L80 corrosion failures and associated corrosion mechanism(s) via lab failure analysis.

Subject
X-ray diffraction, Energy dispersive X-ray spectroscopy, Photography, Couplings, Walls, Corrosion scales, Tubing, Corrosion losses, Internal surfaces, Pitting, Case studies, Deposit corrosion, Chlorides
Keywords:
L80, tubing, failure analysis, metallurgical examination, Permian basin
© 2023 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).
2023
Association for Materials Protection and Performance (AMPP)
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