Method of cementing

Details Method of cementing Method of cementing

1977-01-28

1977-10-18

Poer, J.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 90, 106110, 106315, 166293, C04B 735

Patent

active

040544613

ABSTRACT:
A cement composition is provided containing portland cement; calcium sulfate hemihydrate; an alkali metal nitrate; one or more retarders selected from the group consisting of a low molecular weight hydroxypolycarboxylic acid and sodium, potassium, and lithium salts thereof, and an alkaline hexametaphosphate; and as optional ingredients, calcium chloride and/or a condensation product of mononaphthalene sulfonic acid and formaldehyde; said ingredients being present in amounts effective to provide a cement which will set within a desired period of time at temperatures below about 80.degree. F down to below freezing, e.g. 32.degree. F, to provide a monolithic mass having adequate strength.

REFERENCES:
patent: 3663286 (1972-05-01), De Barrau
patent: 3723145 (1973-03-01), Haldas et al.
patent: 3782992 (1974-01-01), Uchikawa et al.
patent: 3891454 (1975-06-01), Cunningham et al.

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