Ultrasonic inspection apparatus for tubular members and method

Details Ultrasonic inspection apparatus for tubular members and method Ultrasonic inspection apparatus for tubular members and method

1977-08-10

1978-08-15

Gill, James J.

Measuring and testing

Vibration

By mechanical waves

73625, 73634, G01N 2904

Patent

active

041063473

ABSTRACT:
An ultrasonic inspection apparatus for use in inspecting drill pipe or like tubular members being tripped into or out of a well borehole comprises a plurality of ultrasonic wheel-type search units arranged on a frame which defines a vertical passage for the tubular member. The search units are symmetrically disposed around the tubular member and are urged into sonic coupling with the member by means of pneumatic cylinders each having an extendible and retractable member for radially moving its respective search unit in a horizontal plane. The search unit assembly includes a number of stabilizer guide wheels for engaging the surface of the tubular member. The pneumatic cylinder is associated with a self-relieving pressure regulator for maintaining the search wheel contact with the tubular member at a constant pressure. A method of inspecting a string of pipe during a tripping operation is also provided.

REFERENCES:
patent: 3327523 (1967-06-01), Kelemencky et al.
patent: 4041773 (1977-08-01), Hauldren et al.

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