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Collapse resistant expandables for use in wellbore environments

  • US 7,191,842 B2
  • Filed: 03/12/2003
  • Issued: 03/20/2007
  • Est. Priority Date: 03/12/2003
  • Status: Expired due to Fees
First Claim
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1. A system, comprising:

  • an expandable tubular having a wall with a plurality of bistable cells that change from a stable collapsed state to a stable expanded state during expansion of the expandable tubular, the expandable tubular further comprising a blocking member, disposed in the wall, that shifts position upon reaching the expanded state to further resist return of the cells to the stable collapsed state.

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