Seals for gas and oil well swabs

Details Seals for gas and oil well swabs Seals for gas and oil well swabs

1986-02-24

1988-06-21

Wayner, William E.

Expansible chamber devices

Piston

Open-ended hollow skirt type

92242, 277207R, F16J 104

Patent

active

047518707

ABSTRACT:
Seal for maintaining gas-tight contact between casing wall and, particularly, automatic well swabs. The seal includes an upper portion containing a reinforcing tube and being minimally less in diameter than the casing interior, a tapering midsection and a lower skirt portion contacting the well casing. Also included is a secondary embodiment with an upper portion being substantially less in diameter than the casing interior and reinforcing ribs in the tapering midsection.

REFERENCES:
patent: 586688 (1897-07-01), Morrow
patent: 3994208 (1976-11-01), Boyer
patent: 4238992 (1980-12-01), Tuck, Jr.
patent: 4528896 (1985-07-01), Edwards

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