Patent ID: 6131659
Filing Date: 2000-10-17
Classification: E21B,Y10S

Abstract:
A downhole corrosion monitoring apparatus for determining the condition of a section of a well tubing string or a well casing string, the apparatus comprising:(a) a plurality of piezoelectric transducers arranged in a fixed array, spaced longitudinally and axially from each other, and affixed about the circumference of the section of tubing or casing string to be monitored;(b) a microprocessor electrically connected to the transducers for activating the transducers and for receiving and transmitting signals produced by the transducers;(c) an electrical power source and conducting means extending from the power source to the microprocessor;(d) control and instrumentation means for activating the microprocessor and for receiving, recording and processing the data output signals of the microprocessor; and(e) display means in association with the control and instrumentation means for displaying data relating to corrosion rate and location of defects in the section of the tubing or casing string.