Patent ID: 7698937

Claim:
A sensor system for detecting defects in a tubular string while positioned within a well, the system comprising: a sensor tool comprising a plurality of circumferentially spaced sensors arranged in two or more axially spaced rows; a plurality of sensors positioned in a row, each sensor positioned on one of a plurality of sensor support pads each having a radially outer surface radially outward of a respective sensor, the plurality of sensors in one of the two or more rows including sensors with sensor axes inclined at different angles relative to a tool central axis for scanning tubular string defects while the sensor tool is moving through the tubular string, the plurality of sensor pads in the two or more rows providing substantially 360° coverage of the tubular string within the well as the sensor tool is moved axially through the tubular string, and a spacing between the tool body and each of a plurality of sensor pads when in a radially extended sensing position providing an axially extending fluid flow channel through the tubular string and past the sensor system; one or more pivot members positioned along the length of the sensing tool to allow pivoting of a lower tool body supporting a lower plurality of sensors from an upper tool body supporting an upper plurality of sensors; and a flexible line connected to the sensor tool for lowering the sensor tool in the well and retrieving the sensor tool from the well.