Apparatus for expanding a tubular member

CAFC
  • US 7,240,729 B2
  • Filed: 01/30/2004
  • Issued: 07/10/2007
  • Est. Priority Date: 12/07/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. An apparatus for radially expanding and plastically deforming a tubular member, comprising:

  • a support member comprising a fluid passage;

    a mandrel for radially expanding and plastically deforming the tubular member slidingly coupled to the support member for longitudinal fluid pressure-driven displacement relative to the support member in successive strokes, wherein the mandrel comprises an expansion cone;

    at least one pressure chamber defined by and positioned between the support member and mandrel fluidicly coupled to the fluid passage; and

    one or more releasable supports coupled to the support member adapted to support the tubular member, the one or more releasable supports being movable longitudinally through the interior of the tubular member, between the successive longitudinal strokes of the mandrel, and operable to internally grip successive longitudinal portions of the tubular member respectively during the successive strokes of the mandrel.

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