E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/08 (2006.01) B01D 29/11 (2006.01) E21B 19/22 (2006.01)
Patent
CA 2144014
A coiled well screen includes an elongated and flexible tubular member wound in the shape of a coil. The tubular screen member may include support rods disposed cylindrically and extending in the axial direction and wire means to form slits of a predetermined width. The coiled screen may further include an elongated and flexible perforated tube formed with openings at a predetermined interval.
Nagaoka Tadayoshi
Sparlin Derry D.
Moffat & Co.
Nagaoka International Corporation
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