Additive for cement slurry for well and method for producing said additive, cement slurry for well, and cementing method for well

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United States of America Patent

PATENT NO 11753572
APP PUB NO 20220220357A1
SERIAL NO

17604093

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Abstract

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An additive for a cement slurry for a well that is capable of suppressing the generation of free water and preventing flotation/separation of low-specific-gravity aggregate while securing sufficient cement strength even at a high temperature and a method for producing this additive are disclosed. The additive contains an aqueous dispersion of silica and a layered silicate.

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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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