Anionic copolymers for improved control of drilling fluid rheolo

Details Anionic copolymers for improved control of drilling fluid rheolo Anionic copolymers for improved control of drilling fluid rheolo

1985-04-26

1987-07-14

Guynn, Herbert B.

Compositions

Leather or fur treating

252 851, C09K 702

Patent

active

046801286

ABSTRACT:
Low molecular weight copolymers of acrylic acid and salts of vinylsulfonic acid are superior dispersants and high temperature deflocculants for the stabilization of the rheological properties of aqueous claybased drilling fluids subjected to high levels of calcium ion contamination.

REFERENCES:
patent: 2552775 (1951-03-01), Fischer et al.
patent: 2650905 (1973-09-01), Fordyce et al.
patent: 2718497 (1955-09-01), Oldham et al.
patent: 3134686 (1964-05-01), Baechtold
patent: 3203938 (1965-08-01), Baechtold
patent: 3629101 (1971-12-01), Hille et al.
patent: 4554307 (1985-11-01), Farrar et al.

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