Drilling fluid composition and process for the filtrate...

Details Drilling fluid composition and process for the filtrate... Drilling fluid composition and process for the filtrate...

C - Chemistry, Metallurgy

09

K

C09K 8/90 (2006.01) C09K 8/20 (2006.01) C09K 7/02 (1990.01)

Patent

CA 2101172

A b s t r a c t In order to reduce the filtrate of aqueous drilling fluid compositions based on clay minerals containing mixed metal hydroxides, a polysaccharide that is partially etherified with hydroxyethyl and/or hydroxypropyl groups is used as the filtrate-reducing agent.

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