High temperature lightweight foamed cements

Details High temperature lightweight foamed cements High temperature lightweight foamed cements

1987-09-17

1989-10-03

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 97, C04B 702

Patent

active

048713953

ABSTRACT:
Cement slurries are disclosed which are suitable for use in geothermal wells since they can withstand high temperatures and high pressures. The formulation consists of cement, silica flour, water, a retarder, a foaming agent, a foam stabilizer, and a reinforcing agent. A process for producing these cements is also disclosed.

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patent: 4588443 (1986-05-01), Bache
patent: 4655979 (1987-04-01), Nakano et al.
patent: 4683003 (1987-07-01), Nakano et al.
patent: 4684407 (1987-08-01), Umezawa et al.
patent: 4689083 (1987-08-01), Gutmann et al.
patent: 4737193 (1988-04-01), Guhmann et al.
patent: 4759802 (1988-07-01), Ochi et al.

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