Inflatable well seal

Details Inflatable well seal Inflatable well seal

1993-08-09

1995-05-02

Neuder, William P.

Wells

Packers or plugs

Expanded by confined fluid from central chamber, pump or...

166285, 285 18, 403 31, E21B 3313

Patent

active

054110831

ABSTRACT:
A method and apparatus for sealing wells utilizing an inflatable bag and an automatically separable coupler. An air compressor or other fluid source supplies a fluid to the inflatable bag via a hose connected to the bag by this coupler and a valve. The bag is lowered into the well and it is then inflated until the coupler separates thereby disconnecting the hose from the bag, thus allowing the hose and the coupler to be recovered and used again. The well is thus sealed by the inflated bag. Concrete or any other similar substance can then be deposited into the well to fill the cavity formed between the bag and the level of the ground. Once the bag has been inflated to cover the well opening, it is then disconnected from the hose and coupler. Disconnection is effected automatically by collapse of flexible gaskets which join the coupler and the valve.

REFERENCES:
patent: 3995694 (1976-12-01), Freiburger
patent: 4913229 (1990-04-01), Hearn

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