A LOW-POWER AUTOMATED MEASUREMENT SYSTEM FOR PULSED EDDY CURRENT BASED INSPECTION OF OIL-WELL CASING

• Abstract:

  This paper presents a design of a multichannel measurement system for nondestructive inspection of oil-well casing's mechanical properties (i.e. tube wall thickness and inner diameter), employing pulsed eddy current (PEC) technique. A specific feature of the system is its operation in high-temperature environment (typically up to 175°C), which requires simple and robust circuits, low part-count probe design, low power consumption and proper automated measurement algorithms to ensure reliable operation. Based on our previous work on PEC method, we propose an inspection tool, consisted of a simple, low-length three-coil probe, switch-mode power conditioning and transmitter excitation unit, and a low-power data acquisition and telemetry circuit. Preliminary results of our high-temperature functional tests confirm reliable operation of the inspection tool and provide additional verification of the previously proposed PEC methodology for measurements in harsh environments.
• Download:

  IMEKO-TC4-2004-069.pdf
• DOI:

  _unreg_tc4-2004.069

Event details:

• IMEKO TC:

  TC4
• Event name:

  TC4 Symposium 2004
• Title:

  XIII IMEKO TC4 International Symposium on Measurements for Research and Industrial Applications (together with IXth International Workshop on ADC Modeling and Testing, IWADC)
• Place:

  Athens, GREECE
• Time:

  29 September 2004 - 1 October 2004