Knockout pin trap

Details Knockout pin trap Knockout pin trap

1980-02-19

1982-07-13

Pate, III, William F.

Wells

Means for guiding insertable element laterally of well axis

Secured in operative position by movable means engaging well...

29160, 166 99, 166187, 166227, 166328, 210445, E21B 3108

Patent

active

043389996

ABSTRACT:
A trap to catch knockout plugs or "pins" from casing inflation packers. The trap is mounted in the well casing above a float valve, and catches pins falling from casing inflation packers in the casing above it as these pins are broken off by a cementing plug descending into the well, thus preventing the loose pins from jamming the float valve open after cementing is completed. The trap comprises a generally cylindrical hollow body having rods extending laterally across its bore, and a collapsible pin guide mounted on top of the body to guide the pins into the body, where they are constrained above the float valve by the rods.

REFERENCES:
patent: 504679 (1893-09-01), Gibson
patent: 1167670 (1916-01-01), Wheeler
patent: 1465320 (1923-08-01), Spruill
patent: 1651321 (1927-11-01), Burkelman
patent: 1722965 (1929-07-01), Patton
patent: 1880004 (1932-09-01), Warswick
patent: 1908933 (1933-05-01), Tinello
patent: 2011518 (1935-08-01), Griffin
patent: 3086655 (1963-04-01), Compton

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