Aqueous polysaccharide compositions

Details Aqueous polysaccharide compositions Aqueous polysaccharide compositions

C - Chemistry, Metallurgy

08

K

31/26

C08K 3/16 (2006.01) C08K 5/098 (2006.01) C09K 8/08 (2006.01)

Patent

CA 1295120

ABSTRACT AQUEOUS POLYSACCHARIDE COMPOSITIONS The invention provides aqueous polysaccharide compositions comprising 0.03 to 5% w/v of a water-soluble polysaccharide, 5 to 80% w/v of at least one salt of at least one mono- or divalent cation, wherein at least 0.05% w/v, based on the composition, of the at least one salt is formate, the balance of the at least one salt, if any, being at least one halide, a process for preparing the compositions, and their use in well-drilling operations.

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