As a part of an overall upgrading of corrosion control activities on the water injection system a comprehensive project for installing systems for the cathodic protection of water well casings was approved. These water wells are located in groups serving centralized water injection pump stations over a large geographical area (Figure 1). Due to a wide variety of soil conditions encountered in the various areas, both close (or distributed) and remote C.P. anode systems were designed. These ranged from individual well head transformer rectifier units in areas of extremely low soil resistivities (below 100 ohm centimeter) to large units designed to serve a number of wells and utilizing both surface and deep anode ground beds in areas with soil resistivities of 5000-500,000 ohm-centimeters.

Subject
Electric current, Water, Piping, Soil resistivity, Installation, Flanges, Transformers, Wellheads, Rectifiers, Resistors, Well casings, Electrode potential, Anodes
© 1980 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).
1980
Association for Materials Protection and Performance (AMPP)
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