Abstract
Electric pulses of several hundred volts, applied for very brief periods of time, several thousand times per second, are more effective and economical than conventional DC currents in protecting deep and/or close spaced well casings against external corrosion. More uniform current distribution, greater depth of protection, reduced stray current interference, and smaller anode bed requirements are the main benefits of pulsed technology. Operating principles, equivalent electrical circuits, design considerations and field cathodic protection logging experience will be reviewed.
© 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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