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PRCI PR-151-106
- Assessing Cathodic Protection Levels of Well Casings
- Report / Survey by Pipeline Research Council International, 01/01/1983
- Publisher: PRCI
$6.00$12.00
L51419e
Science Applications, Inc.
Need: 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.
Result: 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.
Benefit: The results presented here have been partially validated by limited field testing which has been limited to wells less than 3000 feet long. To validate completely all aspects of the model, additional field-testing is advisable. In addition, the model structure is limited to specific field and structure geometries. Extension of the model to additional field configurations may be necessary in some situations.
Science Applications, Inc.
Need: 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.
Result: 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.
Benefit: The results presented here have been partially validated by limited field testing which has been limited to wells less than 3000 feet long. To validate completely all aspects of the model, additional field-testing is advisable. In addition, the model structure is limited to specific field and structure geometries. Extension of the model to additional field configurations may be necessary in some situations.
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