DOWNHOLE WELL CORROSION MONITORING APPARATUS AND METHOD

摘要

The existence and rate of corrosion in a section of a well tubing or well casing is determined and monitored by installing at predetermined locations as the string is placed in the well bore, sections of pipe (20) that have been fitted with an array of piezoelectric transducers (26) and a microprocessor (28) that controls signals going to and from each array of transducers and signals going to and received from controls and intrumentation apparatus located at the earth's surface. The microprocessors at varying locations along the string are electrically connected to the surface control and instrumentation apparatus by conductor cables and/or by wireless means using the pipe string as the conductive path for electrical signals.