Retrievable screen device for drill pipe and the like

Details Retrievable screen device for drill pipe and the like Retrievable screen device for drill pipe and the like

1983-10-21

1985-01-22

Adee, John

Liquid purification or separation

Filter

Within flow line or flow line connected close casing

210452, 166227, 175314, B01D 3502

Patent

active

044950730

ABSTRACT:
A mud screen for installation between any two selected ends of interconnected pipes, such as a drill pipe string, comprises a supporting collar anchored in the selected threaded connection of the drill pipe string and a screen support mounted on such collar and secured thereto by one or more releasing devices. An apertured inverted conical screen is supported by the screen support in transverse relationship to the pipe bore. A bridging element is secured across the screen support and defines a mounting for an upstanding post which functions as a manual handle and also defines a fishing neck at its upper end for downhole retrieval.

REFERENCES:
patent: 2152980 (1939-04-01), Svadlenak
patent: 2942670 (1960-06-01), Burns et al.
patent: 3429448 (1969-02-01), Rosell
patent: 3450207 (1969-06-01), Hirsch
patent: 3749250 (1973-07-01), Oldford
patent: 3941697 (1976-03-01), Johnson
patent: 3970563 (1976-07-01), Codo
patent: 4169793 (1979-10-01), Lockshaw

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