Perforated pipe

Details Perforated pipe Perforated pipe

1980-09-18

1982-08-10

Leppink, James A.

Wells

Screens

Spiral

166227, 291635CW, 210499, E21B 4308

Patent

active

043433596

ABSTRACT:
A perforated pipe and method of making the same for use in wells, screen and the like, the perforations being in the form of sets of oppositely disposed slits in a tubular member defined along a helical path; the preparation being characterized as self-cleaning and resulting from a balanced forming operation to substantially reduce warpage.

REFERENCES:
patent: 514313 (1894-02-01), Eckstein
patent: 1027917 (1912-05-01), Smith
patent: 1028066 (1912-05-01), Smith
patent: 1367609 (1921-02-01), Layne
patent: 1507580 (1924-09-01), Cater
patent: 1620412 (1927-03-01), Tweeddale
patent: 1839284 (1932-01-01), White
patent: 1994344 (1935-03-01), Harrington
patent: 2217327 (1940-10-01), Zeidler, Jr.
patent: 2634613 (1953-04-01), Napier
patent: 2933137 (1960-04-01), D'Auoiffret et al.
patent: 3087560 (1963-04-01), Dodson
patent: 3431975 (1969-03-01), Blake
patent: 3844347 (1974-10-01), Stotzel et al.

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