Environmentally safe well plugging composition

Details Environmentally safe well plugging composition Environmentally safe well plugging composition

1994-07-19

1995-12-19

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106218, 106241, 106416, 166293, 166295, 428403, 428497, 530201, 507112, C04B 1410

Patent

active

054765439

ABSTRACT:
A composition for plugging wells that is biodegradable and environmentally safe comprising bentonite particles coated with a water soluble coating of biodegradable natural resin, such as certified three pound Confectioners White Lac Glaze in Specially Denatured Ethyl Alcohol (SDA) Formula 35A, 190 proof. The bentonite may be in the form of chips or compressed pellets. When exposed to water, the soluble coating dissolves at a uniform rate, exposing the bentonite to water whereupon it expands to form a tough but flexible water impermeable seal of a semi-solid, gel-like mass.

REFERENCES:
patent: 2836555 (1958-05-01), Armentrout
patent: 4124550 (1978-11-01), Kobayashi et al.
patent: 4194915 (1980-03-01), Perkins
patent: 4391925 (1983-07-01), Mintz et al.
patent: 4810534 (1989-03-01), Seaborne et al.
patent: 4929580 (1990-05-01), Jones
patent: 5106421 (1992-04-01), Marshall, Jr. et al.
patent: 5322879 (1994-06-01), Gane et al.

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