Screen

Details Screen Screen

1985-03-07

1987-04-14

Andrews, Melvyn J.

Wells

Screens

Spiral

166234, E21B 4300

Patent

active

046570799

ABSTRACT:
A screen particularly suitable for use in deep well comprises a reinforcing member (2) of a generally cylindrical configuration, a plurality of support rods (3) arranged on the outside of the reinforcing member (2) in the axial direction thereof and a wire (4) wound helically on the outside of the support rods (3). A multitude of slits (2b) continuous in substantially the circumferential direction of the reinforcing member (2) are formed at a predetermined pitch in the reinforcing member (2). The screen made according to the invention has a much larger opening space and therefore has a greater fluid collecting efficiency than conventional screens while maintaining a sufficient strength against an external pressure.

REFERENCES:
patent: 982485 (1911-01-01), Eberlein
patent: 1287031 (1918-12-01), Johnson
patent: 1848730 (1932-03-01), Lange
patent: 2155744 (1939-04-01), Van Westrum
patent: 3816894 (1974-06-01), Howard
patent: 3859713 (1975-01-01), Fiedler
patent: 3957087 (1976-05-01), Johnston
patent: 4079500 (1978-03-01), Tolliver

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