Drilling mud additives based on a polymer mixture, their use, an

Details Drilling mud additives based on a polymer mixture, their use, an Drilling mud additives based on a polymer mixture, their use, an

1989-09-29

1991-07-02

Stoll, Robert L.

Compositions

Leather or fur treating

252 851, 252 8511, 252 8512, 252 8551, 523130, E21B 4322, C09K 702

Patent

active

050283421

ABSTRACT:
Drilling mud additives based on a polymer mixture of 20 to 80% by weight carboxymethyl cellulose and 80 to 20% by weight of a polycarboxylic acid selected from polyacrylate, polymethacrylate and/or copolymers thereof and/or salts thereof, in which the carboxymethyl cellulose, which has been obtained from raw linters and/or wood cellulose by the slurry process, is mixed in wet, alcohol-moist form with the polycarboxylic acid and dried, to their use in drilling muds or workover and packer liquids, and to a process for their production.

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Chemical Abstract, vol. 100 (1984), Abst. No. 212787V, Chemical Abstract, vol. 100 (1984), Abst. No. 212788W.

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