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The Inspection of Steel Coiled Oilfield Tubulars

Coiled oilfield tubulars up to length 32,000 ft. are now being manufactured. Their NDE has evolved to where standards are requiring advanced form of magnetic flux leakage and phased array ultrasound. This presentation covers recent developments in these techniques, including a non-contact magnetic method for measuring wall thickness, phased array methods for flaw assessment, especially in butt welds, and the use of an internal untethered robot. Examples of NDE results are given, including 2 strings that were submerged by hurricane Katrina.

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