External protection for expandable threaded tubular connections

Details External protection for expandable threaded tubular connections External protection for expandable threaded tubular connections

2011-07-19

2011-07-19

Dunwoody, Aaron (Department: 3679)

Pipe joints or couplings

With casing, lining or protector

C175S325200

Reexamination Certificate

active

07980597

ABSTRACT:
A female element of a threaded tubular connection that is fitted to undergo diametrical expansion in a plastic deformation region. The female element is disposed at one end of a tubular component and includes on its external periphery a mechanism that absorbs scratch energy of a scratching body that may come into external contact with the female element and a mechanism that retains the scratch energy absorption mechanism. The retaining mechanism is configured to prevent release of debris from the scratch energy absorption mechanism during expansion of the threaded tubular connection.

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patent: 2005/0087983 (2005-04-01), Verger et al.
patent: 2005/0127671 (2005-06-01), Ellington et al.
patent: 2006/0061098 (2006-03-01), Hovem et al.
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patent: 2 841 626 (2004-01-01), None
patent: 02 16907 (2002-02-01), None
patent: 03 059549 (2003-07-01), None
patent: WO 2004/003416 (2004-01-01), None

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