Abstract
The failure of production string casing as a result of corrosion in wells of the petroleum industry is rapidly becoming one of the most serious and perplexing problems to confront the industry. “With the period of flush production behind the industry in many areas and more pronounced emphasis being placed on prolonged production under secondary recovery methods, practical solutions to this problem are being sought.
This paper points out those areas in which the problem of casing corrosion is most troublesome, and lists the generally accepted causes and means of preventing and repairing such failures. The more recently developed methods of investigation, such as the use of casing potential logs and current with-drawal-potential surveys, and the use of cathodic protection, for preventing failures are discussed. 8.4.3
