Water well stagnant bottom rehabilitation means and method

Details Water well stagnant bottom rehabilitation means and method Water well stagnant bottom rehabilitation means and method

1998-06-29

2000-10-31

Lillis, Eileen D.

Wells

Automatic

166312, 417 38, E21B 2100

Patent

active

061387509

ABSTRACT:
An apparatus and method of rehabilitating the stagnant bottom of water wells using existing well equipment including a pump and a pressure tank, augmented by valves and a conduit that extends from the surface to near the bottom of the stagnant region at the well bottom. Water pumped from the well is returned under pressure to the well bottom where it displaces the fouled contents of the stagnant region at the well bottom. This elevates the contents of the well bottom to a position above the pump intake, where the contents can then be pumped to waste.

REFERENCES:
patent: 1432425 (1922-10-01), Symons
patent: 4132268 (1979-01-01), Darrison
patent: 4462758 (1984-07-01), Speed
patent: 4741357 (1988-05-01), Battel et al.
patent: 4972709 (1990-11-01), Bailey, Jr. et al.
patent: 5064347 (1991-11-01), LaValley, Sr.

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