Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing
Patent
1993-11-22
1995-02-14
Green, Anthony
Compositions: coating or plastic
Coating or plastic compositions
Inorganic settable ingredient containing
106DIG4, 166292, 405266, 405267, C04B 1200
Patent
active
053891465
ABSTRACT:
A grouting composition comprised of (a) 84-95 % by weight of granular water-swellable sodium-based bentonite, (b) 1-8 % by weight of finely divided salt-water hydratable sepiolite, and (c) 4-8% by weight of a clay stabilizer. The grout composition which contains no organic polymeric substances is mixed with fresh water to provide a pumpable, rehydratable, and easily applied grouting slurry. The slurry admixture will form a solid seal with low hydraulic conductivity and high structural stability. The grouting composition is useful for sealing the annular space around a well casing and plugging abandoned wells in practically all types of formations. A preferred grouting compostion comprises 88-90% by weight of granular sodium bentonite, 6-7% by weight of sepiolite, and 4-5% by weight of granular ammonium sulfate. In use, 50 pounds of the preferred grouting compostion is mixed with 13-14 gallons of fresh water directly to provide a grouting slurry with a total of 30-32% by weight of active solids and a density of 10.1-10.3 pounds per gallon. The slurry admixture is a completely inorganic, non-toxic, and environmentally safe grouting system.
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Baroid Technology Inc.
Green Anthony
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