Unitary float valve and wiping plug retainer

Details Unitary float valve and wiping plug retainer Unitary float valve and wiping plug retainer

1982-06-07

1984-04-17

Novosad, Stephen J.

Wells

Pistons, fluid driven into well

With stop

166328, 166386, E21B 3314

Patent

active

044428944

ABSTRACT:
A cementing float valve for subterranean wells is provided wherein a wiping plug retaining sleeve is concentrically positioned on the top of a float valve and secured to an outer housing by cementitous or other drillable material. the retaining sleeve provides a downwardly facing latching surface and a seal bore disposed above the latching surface for cooperation respectively with an expandable ring and an annular seal conventionally provided on a wiping plug.

REFERENCES:
patent: 2196652 (1940-04-01), Baker
patent: 2621742 (1952-12-01), Brown
patent: 2874785 (1959-02-01), Muse
patent: 3006415 (1961-10-01), Burns et al.
patent: 4060131 (1977-11-01), Kenneday et al.

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