Method of producing light weight cement for use of cementation o

Details Method of producing light weight cement for use of cementation o Method of producing light weight cement for use of cementation o

1986-09-17

1988-09-06

Capella, Steven

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

166292, C04B 702

Patent

active

RE0327425

ABSTRACT:
A cement slurry of low specific density for cementation of oil-and gas wells is produced by mixing oil-well cement with finely divided emission products comprising amorphous silica dust which has been obtained during the electrothermal preparation of ferrosilicon and/or silicon metal, water, and any desirable dispersion components, the emission products being added in an amount in the range of 1-50% of the total weight of dry material. The emission products can either be mixed with the cement while both components are in the dry state whereupon there is added a sufficient quantity of water in order to obtain a desired specific weight of the slurry or first mixed with water and any other desired dispersion components and this slurry is mixed with the oil-well cement.

REFERENCES:
patent: 3131075 (1964-04-01), Brooks
patent: 4046583 (1977-09-01), Collepardi
patent: 4111711 (1978-09-01), Kiehl et al.
patent: 4118242 (1978-10-01), Kjohl et al.

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