Method of assembling self-cleaning helical spring filter

Details Method of assembling self-cleaning helical spring filter Method of assembling self-cleaning helical spring filter

1979-06-04

1981-02-10

Moon, Charlie T.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29434, 29446, B23P 1516

Patent

active

042492920

ABSTRACT:
Methods for cleaning sand from a helical spring sand filter, methods for assembling a self-cleaning helical spring sand filter, and a self-cleaning helical spring sand filter for use at the petroliferous unconsolidated sand strata of an oil well are disclosed. The filter comprises a helical spring connected in tension at each end to an elongated perforated sleeve for spacing apart all convolutions by a predetermined distance for forming the filter. One or more washer shaped cleaning rings with square holes therein are mounted between adjacent convolutions at one end of the spring for being rotated by a square ended rod supported by a sucker rod in a well between all of the convolutions to the spring other end for scraping off all foreign material from between the convolutions. The spring sand filter can be cleaned for as many times as there are cleaning rings instead of making trips to the surface for unclogging.

REFERENCES:
patent: 408487 (1889-08-01), Jewell
patent: 1414120 (1922-04-01), Fulcher
patent: 1638731 (1927-08-01), Hanson
patent: 2280054 (1942-04-01), Beck
patent: 2327687 (1943-08-01), Williams et al.
patent: 2729294 (1956-01-01), Adams
patent: 3750885 (1973-08-01), Fournier
patent: 3754651 (1973-08-01), Lannoch
patent: 3901320 (1975-08-01), Calderon
patent: 3973311 (1976-08-01), Harnsberger

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