L51419 Assessing the Cathodic Protection Levels of Well Casings

This report is oriented towards providing a tutorial explanation of casing response to applied protection current based on computer-modeled examples. This presentation will allow the reader to obtain an insight into the parameters, which affect casing behavior when a storage field is energized with cathodic protection currents.

The principal objectives of this research program were: (1) to develop a method for predicting the down-hole distribution of protection current in a well casing; (2) to identify surface measurements which could be used to assess protection levels on the casing and (3) to identify the principal interference mechanisms in a storage field and develop a means of determining their effects.