Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1988-10-03
1989-12-12
Hearn, Brian E.
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
106 84, 405267, C04B 1204
Patent
active
048865508
ABSTRACT:
A flexible grout composition is used to cement a conduit within a bore hole to prevent fluid loss, for sealing and grouting well casings, plugging abandoned wells, and waterproofing earthen structures. The flexible grout composition consists essentially of water, a water-swellable clay, such as bentonite; optionally a particulate filler; and a dispersing agent for the water-swellable clay, such as sodium acid pyrophosphate (SAPP). The grout composition is mixed with water to form a slurry and the slurry is pumped into its intended location, for example, within the annulus defined between an outer surface of a conduit or casing disposed within a bore hole, and the surrounding earthen formation formed, for example, by drilling.
REFERENCES:
patent: 4696698 (1987-09-01), Harriet
patent: 4696699 (1987-09-01), Harriet
patent: 4797159 (1989-01-01), Harriet
American Colloid Company
Griffis Andrew
Hearn Brian E.
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