Well cover plate arrangement and method of use

Details Well cover plate arrangement and method of use Well cover plate arrangement and method of use

2008-04-17

2009-08-11

Gay, Jennifer H (Department: 3676)

Wells

Above ground apparatus

Well caps or casing heads

C166S094100

Reexamination Certificate

active

07571764

ABSTRACT:
A well cover arrangement is shown for covering the exposed opening of a well where the well has a submersible pump supported on a collared well string which is suspended downwardly in the well. The cover arrangement includes both a U-plate with a U-shaped opening therein and a door element which fits within the U-plate opening. Once the door element is properly positioned on the U-plate, cooperating locking elements maintain its proper position. The ultimate weight of the well tubing string further secures the door element as the collar in the well string contacts a portion of the door element, making removal of the door element only possible by first lifting the well string.

REFERENCES:
patent: 2735697 (1956-02-01), Zanin
patent: 3463247 (1969-08-01), Klein
patent: 3527295 (1970-09-01), Gangel et al.
patent: 3631895 (1972-01-01), Medina et al.
patent: 3963054 (1976-06-01), Martin
patent: 4111388 (1978-09-01), Presley
patent: 4129151 (1978-12-01), Henson
patent: 4202376 (1980-05-01), Forsell
patent: 4972905 (1990-11-01), Henson

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