High temperature expanding cement composition and use

Details High temperature expanding cement composition and use High temperature expanding cement composition and use

1980-12-19

1982-05-04

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 89, 106 90, 106 98, 106120, 166293, 166294, C04B 700

Patent

active

043280366

ABSTRACT:
A hydratable cement composition useful for preparing a pectolite-containing expanding cement at temperatures above about 150.degree. C. comprising a water soluble sodium salt of a weak acid, a 0.1 molar aqueous solution of which salt has a pH of between about 7.5 and about 11.5, a calcium source, and a silicon source, where the atomic ratio of sodium to calcium to silicon ranges from about 0.3:0.6:1 to about 0.03:1:1; aqueous slurries prepared therefrom and the use of such slurries for plugging subterranean cavities at a temperature of at least about 150.degree. C.
The invention composition is useful for preparing a pectolite-containing expansive cement having about 0.2 to about 2 percent expansion, by volume, when cured at at least 150.degree. C.

REFERENCES:
patent: 3826665 (1974-07-01), Hovasse et al.
patent: 4028125 (1977-06-01), Martin
patent: 4036659 (1977-07-01), Stude
patent: 4256500 (1981-03-01), Turpin
patent: 4261755 (1981-04-01), Berry et al.

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