High temperature fluid loss additive for cement slurry and metho

Details High temperature fluid loss additive for cement slurry and metho High temperature fluid loss additive for cement slurry and metho

1990-12-12

1992-05-26

Dixon, Jr., William R.

Compositions: coating or plastic

Materials or ingredients

Additive materials for inorganic cements which contain a...

106639, 106653, 106724, 106802, 106810, 106819, 252 8551, 524 4, 166285, 166293, 507120, 507121, 507140, C04B 735, E21B 3314

Patent

active

051164213

ABSTRACT:
A fluid loss control additive for use in well cementing operations wherein the downhole temperature ranges from about 200.degree. to about 500.degree. F. The additive is a polymer comprised of 2-acrylamido-2-methyl propane-3-sulphonic acid, N-vinyl,-N-methylacetamide, in the presence or absence of arcylamide. This additive is also effective in saltwater cement slurries.

REFERENCES:
patent: 4015991 (1977-04-01), Persinski et al.
patent: 4309523 (1982-01-01), Engelhardt et al.
patent: 4555269 (1985-11-01), Rao et al.
patent: 4632186 (1986-12-01), Boncan et al.
patent: 4674574 (1987-06-01), Saloly et al.
patent: 4700780 (1987-10-01), Brothers
patent: 4806164 (1989-02-01), Brothers
patent: 4865129 (1989-09-01), Ryles

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