Ultrasonic testing apparatus and method for multiple diameter oilfield tubulars
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United States of America Patent
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Feb 4, 1997
Grant Date -
N/A
app pub date -
Apr 26, 1995
filing date -
Apr 26, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Ultrasonic testing apparatus 10 and method for ultrasonically scanning an oilfield tubular 42,56. The apparatus includes four ultrasonic arrays 12, 14, 16, 18 each containing a plurality of individual watertight ultrasonic transducers 20. Axially adjustable ultrasonic arrays 100, 121 include axially spaced sockets 102, 106, and 122, 124, 126, respectively, for controlling an axial movement thereof to preferably discrete positions associated with each selected range of diameters of oilfield tubulars to be tested. Within that range of diameters, the ultrasonic testing apparatus 10 reliably provides for a constant 100% coverage of the tubular to be tested. During scanning, the tubular 56 is moved axially and rotationally with respect to an ultrasonic testing apparatus 50 to provide a helical scan pattern along the length of the tubular 56.
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