Tubular threaded joint capable of being subjected to diametral expansion
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United States of America Patent
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-
Mar 30, 2004
Grant Date -
Nov 7, 2002
app pub date -
May 22, 2002
filing date -
Jun 30, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A threaded joint to be expanded, including a lip at the end of the male element end a housing for the lip on the female element to make the threaded joint capable of being sealed and of having a maximum internal passage cross-section after being subjected to diametral expansion by more than 10%. The free male end surface is socketed before expansion into a partially transverse shoulder surface of the female housing through the matching rebating shapes of the surfaces. And, the male lip outer peripheral surface is arranged with little play of the internal peripheral surface of the female housing. Such a threaded joint is particularly useful for casings and tubings used in oil wells.
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