Fluid composition for drilling

Details Fluid composition for drilling Fluid composition for drilling

C - Chemistry, Metallurgy

09

K

31/26

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

Patent

CA 1217933

Abstract of the Disclosure A fluid composition suitable for use in drilling containing a sulfoethylcellulose alkali metal salt of which a degree of substitution is from 0.5 to 2.5 and the viscosity of a 1% by weight aqueous solution is 5 to 5,000 cP. The sulfoethylcellulose alkali metal salt has excellent water loss reducing ability and viscosity building ability and is soluble and stable in the presence of any monovalent and polyvalent salts at a wide pH range, and is applicable as a high molecular additive to a drilling mud and a completion fluid.

450733

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