Formation treatment with silicate activated lignosulfonate gel

Details Formation treatment with silicate activated lignosulfonate gel Formation treatment with silicate activated lignosulfonate gel

E - Fixed Constructions

21

B

166/31

E21B 43/28 (2006.01)

Patent

CA 1111342

ABSTRACT OF THE DISCLOSURE Highly conductive zones in subterranean formations are treated with aqueous fluids containing gel-forming amounts of water-soluble ligno- sulfonate and silicate. Suitable treating fluids contain about 2 to about 5 weight percent sodium or ammonium lignosulfonate and sodium silicate at a weight ratio of SiO2 to lignosulfonate of about 0.2 to about 1.

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