Drilling mud additives based on a polymer mixture, their...

Details Drilling mud additives based on a polymer mixture, their... Drilling mud additives based on a polymer mixture, their...

C - Chemistry, Metallurgy

09

K

31/24

C09K 8/20 (2006.01) C09K 8/10 (2006.01)

Patent

CA 1318124

ABSTRACT OF THE DISCLOSURE 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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