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Downhole expandable bore liner-filter

  • US 20040040703A1
  • Filed: 10/25/2002
  • Published: 03/04/2004
  • Est. Priority Date: 09/03/2002
  • Status: Active Grant
First Claim
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1. A downhole expandable bore liner and well screen assembly comprising:

  • a tubular base-pipe, the base-pipe having a central axis, a pipe-length and a tube wall with the tube wall having a plurality of through perforations for passing fluids, a filter-cover covering an outside tube-surface of the base-pipe, the filter-cover made of a compressible/self-expanding filter material and having a compressed-thickness, an expanded-thickness, a compressed outer-diameter and an expanded outer-diameter;

    a plurality of runners disposed at the outer cover-surface, the runners in a spaced relationship to each other and extending the pipe-length of the base pipe; and

    constriction means holding the runners in spaced relationship to each other and the filter-cover in a compressed configuration.

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