X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1990-03-12
1991-08-20
Westin, Edward P.
X-ray or gamma ray systems or devices
Specific application
Absorption
378 58, 378 62, 378 56, 378 99, 358111, G01N 2302, H05G 164
Patent
active
050420550
ABSTRACT:
A unit for producing an X-ray beam tangential to a threaded joint is disclosed. The X-beam is received and compared against a master sample. If there are any differences beyond allowable tolerances a failure indication is given. The tests are performed after the joint is made up but before the pipe is placed in the well, limiting remake costs. The X-ray beam is placed tangentially by shifting or rotating the beam as needed or by having a wide beam, so that tangents are obtained at two or more locations on the circumference of the joint. The unit may also compare pipe before making up a joint.
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Akar Pierre J.
Wirt Art
Westin Edward P.
Wong Don
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