E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/08 (2006.01) B01D 29/15 (2006.01) E03B 3/26 (2006.01)
Patent
CA 2423766
The present invention generally provides a wellscreen for use in water wells. In one aspect of the invention, the wellscreen includes a perforated base pipe (31), an inner wrap (32) and an outer wrap (34) with a filter material (36) packed in an annular area therebetween. The filter material provides additional filtering of fluids passing therethrough and also makes the wellscreen more resistant to collapse.
La présente invention concerne généralement un filtre à utiliser dans des puits d'eau. Dans un mode de réalisation de l'invention, ledit filtre comprend un tuyau de base perforé (31), une enveloppe intérieure (32) et une enveloppe extérieure (34) comportant une matière filtrante (36) logée dans une zone annulaire située entre les deux enveloppes. Ladite matière filtrante permet une filtration supplémentaire des liquides qui la traversent et rend également le filtre plus résistant à l'écrasement.
Buckner A. Wayne
Parris Daniel M.
Marks & Clerk
Weatherford/lamb Inc.
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