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Deformable well screen

  • US 5,901,789 A
  • Filed: 11/08/1996
  • Issued: 05/11/1999
  • Est. Priority Date: 11/08/1995
  • Status: Expired due to Term
First Claim
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1. A deformable well screen for preventing migration of solid particles into a hydrocarbon production well, which screen comprises:

  • at least one substantially tubular filter layer having a sieve opening size which is tailored to the size of particles that are to be blocked by the screen,wherein the filter layer is deformable such that it can be expanded, bent, and/or compressed during installation of the screen in a wellbore and that any variation of the sieve opening size of each filter layer as a result of such deformation remains within predetermined limitswherein the filter layer comprises a series of scaled filter sheets which are arranged around an expandable slotted carrier tube and which, when seen in a circumferential direction, are connected at one edge to said tube and at another edge at least partly overlap an adjacent filter sheet.

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