Rheologically stable aqueous drilling fluids

Details Rheologically stable aqueous drilling fluids Rheologically stable aqueous drilling fluids

1986-05-13

1988-04-19

Guynn, Herbert B.

Compositions

Leather or fur treating

252 851, C09K 702

Patent

active

047387882

ABSTRACT:
Aqueous drilling muds which are rheologically stable, non-toxic and adopted for use at high temperatures, are comprised of a viscosity modifying material, e.g., a conventional clay, and a copolymeric dispersant therefor, said copolymeric dispersant comprising the water-soluble, low molecular weight copolymerizate of from about 75 to 99 molar % of acrylic or methacrylic acid, or admixture thereof, with from about 1 to 25 molar % of a water-soluble salt of allyl or methallylsulfonic acid, or admixture thereof.

REFERENCES:
patent: 2552775 (1951-05-01), Fischer et al.
patent: 3203938 (1965-08-01), Baechtold
patent: 3730990 (1973-05-01), Perricone et al.
patent: 3761410 (1973-09-01), Mondshine
patent: 4048077 (1977-09-01), Engelhardt et al.
patent: 4085167 (1978-04-01), Lewis et al.
patent: 4451628 (1984-05-01), Dammann
patent: 4554307 (1985-11-01), Farrar et al.

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