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Protective Sleeve For Expandable Tubulars

  • US 20080066929A1
  • Filed: 11/21/2007
  • Published: 03/20/2008
  • Est. Priority Date: 01/07/2002
  • Status: Abandoned Application
First Claim
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1. An assembly, comprising:

  • a first tubular member comprising a pin member including external threads;

    a second tubular member comprising a box member including internal threads coupled to the external threads of the pin member of the first tubular sleeve; and

    an external sleeve coupled to and overlapping with the ends of the first and second tubular members;

    wherein the external threads of the pin member of the first tubular member comprise a plurality of spaced apart groups of external threads;

    wherein the internal threads of the box member of the second tubular member comprise a plurality of spaced apart groups of internal threads; and

    wherein the external surface end of the pin member of the first tubular member comprises a stress concentrator.

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