Method and apparatus for coiled tubing inspection

Details Method and apparatus for coiled tubing inspection Method and apparatus for coiled tubing inspection

1991-12-05

1994-04-19

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73151, 73155, G01N 2922

Patent

active

053035925

ABSTRACT:
An inspection head for continuous acoustic energy inspection of coiled tubing consisting of a generally cylindrical test head for receiving the tubing longitudinally therethrough while being sealed on each end to maintain fluid couplant circulation. A cylindrical test array is disposed within the head to receive the tubing while directing a plurality of radially aligned compressional wave acoustic sensors and single in-line, angularly oriented shear wave acoustic sensors. Analysis of the various signal returns enables derivation of ovality, inside wall pitting, outside wall pitting, wall thickness, and transverse and/or longitudinal flaws.

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patent: 4108004 (1978-08-01), Murakami
patent: 4353249 (1982-10-01), Lagus et al.
patent: 4404853 (1983-09-01), Livingston
patent: 4475399 (1984-10-01), Livingston
patent: 4487072 (1984-12-01), Livingston
patent: 4541064 (1985-09-01), Livingston
patent: 4794791 (1989-01-01), Wittrisch

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