Hydrolyzed co-polymers of N-vinylamide and acrylamide for use as

Details Hydrolyzed co-polymers of N-vinylamide and acrylamide for use as Hydrolyzed co-polymers of N-vinylamide and acrylamide for use as

1988-11-07

1990-05-01

Lipman, Bernard

Compositions

Leather or fur treating

175 65, 252 8514, 524445, 524447, 524555, C09K 700

Patent

active

049216210

ABSTRACT:
Aqueous, clay-based drilling mud compositions are improved with respect to waterloss control by the addition of a hydrolyzed copolymer of acrylamide and an N-vinylamide. The copolymer, which is effective over a broad range of molecular weights, contains at least 5 mol percent of the N-vinylamide monomer moiety of which at least 5 mol percent is hydrolyzed to vinylamine units. Well drilling is improved by circulating through the bore hole a drilling mud containing this waterloss control additive.

REFERENCES:
patent: 3278506 (1968-10-01), Chamot et al.
patent: 3730900 (1973-05-01), Perricone
patent: 3764530 (1973-10-01), Burland
patent: 3957739 (1976-05-01), Cabestany et al.
patent: 4217214 (1980-08-01), Dubin
patent: 4444667 (1984-04-01), Burkert et al.
patent: 4476029 (1984-10-01), Sy
patent: 4500437 (1985-02-01), Engelhardt
patent: 4533708 (1985-08-01), Costello
patent: 4652623 (1987-03-01), Chen et al.
patent: 4680128 (1987-07-01), Portnoy
patent: 4699722 (1987-10-01), Dymond et al.

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