초록 ▼

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

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.

대표청구항 ▼

Ultrasonic testing apparatus for ultrasonically testing oilfield tubulars, said test apparatus including a tubular support frame having a central axis, said ultrasonic testing apparatus further comprising: first and second linear arrays of transducers for unltrasonically testing said oilfield tubula

Ultrasonic testing apparatus for ultrasonically testing oilfield tubulars, said test apparatus including a tubular support frame having a central axis, said ultrasonic testing apparatus further comprising: first and second linear arrays of transducers for unltrasonically testing said oilfield tubulars, each of said first and second linear array including a plurality of ultrasonic transducers arranged along respective first and second array axes each substantially parallel to said central axis and laterally offset with respect to each other; a drive assembly operable for axially moving an oilfield tubular with respect to said first and second linear arrays in a direction substantially parallel to said central axis, and for rotating said oilfield tubular with respect to said first and second linear arrays at a rate of rotation related to said axial movement, the drive assembly including a plurality of canted rotator stations mounted along said tubular support frame, with each canted rotator station including two wheels adjacent each other for supporting said oilfield tubular therebetween and being canted with respect to said central axis of said tubular frame support; and an axial adjustment assembly for adjusting an axial position of said first linear array with respect to said second linear array in a direction substantially parallel to said central axis.