Borehole cement slurry additive, method for storing same, borehole cement slurry, and borehole cementing method

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United States of America

PATENT NO 11965130
SERIAL NO

17603287

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Abstract

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A borehole cement slurry additive that is capable of suppressing the generation of free water from cement slurries in any environment, whether cold regions, mild regions, or hot regions; and a method for storing the same. The borehole cement slurry additive contains: an aqueous dispersion of silica having an average particle size of 3-200 nm as determined via dynamic light scattering; and a compound having an alcoholic hydroxyl group as a dispersion stabilizer, the compound being included in an amount of 1-30 mol per 1,000 g dispersion medium in the aqueous silica dispersion.

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Patent Owner(s)

  • NISSAN CHEMICAL CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kimata, Masaki Sodegaura, JP 3 0
Murakami, Satoru Sodegaura, JP 34 179
Oota, Isao Sodegaura, JP 9 39

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