Thermally stable thiosulfate hydroxyethylcellulose suspension

Details Thermally stable thiosulfate hydroxyethylcellulose suspension Thermally stable thiosulfate hydroxyethylcellulose suspension

1993-04-08

1995-04-18

Brunsman, David

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

106194, 166275, C09D10128, E21B 4316

Patent

active

054074754

ABSTRACT:
A storage and thermally stable polymer suspension in fresh water remains pourable after mixing at 6 months comprises at least 30% ammonium or sodium thiosulfate and 20% hydroxyethylcellulose. In an oil drilling fluid, yield value decreases less than 35% when heated for 16 hours at 250.degree. F.

REFERENCES:
patent: 3955998 (1976-05-01), Clampitt et al.
patent: 3964923 (1976-06-01), Zetmeir
patent: 5028263 (1991-07-01), Burdick
Huenicke et al., CA8L (24):162985v 1975 no month available.
Cellosize, Union Carbide Corporation, 1959, p. 22 no month available.

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