Means for collecting unwanted material in an oil or gas well

Details Means for collecting unwanted material in an oil or gas well Means for collecting unwanted material in an oil or gas well

1995-11-22

1997-11-04

Neuder, William P.

Wells

With junk retrieving means

175312, D21B 3116

Patent

active

056829507

ABSTRACT:
Means for collecting and bringing up unwanted material from an oil or gas well, the means thereby comprising a grinder or mill (6) and a coating (8) of a wear resistant material along its front and outer surfaces, the mill (6) being secured to a throughgoing drilling pipe having an inner centric liquid channel (7), the axially leading facing end of the mill (6) comprising a channel (4) extending through the mill (6) and into a junk chamber (3) behind or after the mill (6), the upper end of the means comprising a strainer (2) allowing penetration of liquid, but restraining the material, the rotation of the means from the throughgoing drilling pipe thereby ensuring that junk is brought into the channel (4) and from here into the junk chamber (3).

REFERENCES:
patent: 1472213 (1923-10-01), Gilstrap
patent: 1656526 (1928-01-01), Lincoln
patent: 2169922 (1939-08-01), Notley
patent: 2890756 (1959-06-01), Middleton
patent: 3520359 (1970-07-01), Ehrlich
patent: 4696502 (1987-09-01), Desai
patent: 5176208 (1993-01-01), Lalande et al.

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