Well screen

Details Well screen Well screen

E - Fixed Constructions

21

B

E21B 43/08 (2006.01) B01D 29/21 (2006.01) B01D 39/20 (2006.01)

Patent

CA 2215714

A well screen is disclosed for positioning in a well bore to screen solid particles from the fluid produced by the well comprising a base pipe, a portion of the wall of which is perforated, and having threaded connections for connecting the base pipe into a pipe string, a wire screen surrounding the perforated portion of the base pipe, a thin porous membrane comprising two layers of woven cloth of ceramic fibers wrapped around the wire screen, means for holding the ends of the porous cloth membrane in sealing engagement with the base pipe, and a perforated tubular metal shroud surrounding the woven ceramic cloth membrane to protect the membrane from damage when lowered into a well bore.

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