Snap-lock bushing for prepacked screens

Details Snap-lock bushing for prepacked screens Snap-lock bushing for prepacked screens

2007-06-26

2010-06-15

Bagnell, David J (Department: 3672)

Wells

Screens

Porous material

C175S314000

Reexamination Certificate

active

07735553

ABSTRACT:
A snap-lock bushing is provided for use with prepacked screens for monitoring wells. The bushing has an inner bore for sliding over a tubular well casing member and a raised lip protruding from the inner bore for engaging corresponding grooves at each end of the well casing member. The raised lip includes a plurality of lip segments with gaps or slots formed between the lip segments, which allow the raised lip to flex outward during assembly. A prepacked screen is assembled using a snap-lock bushing at each end of the well casing member. A mesh screen is placed in a concentric relationship around the well casing member with the ends of the mesh screen secured over the outer cylindrical surfaces of the bushings. A filter pack of granular material is placed in the concentric space between the well casing member and the screen member during assembly.

REFERENCES:
patent: 5660484 (1997-08-01), Peel

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