Lignosulfonate well cementing additives

Details Lignosulfonate well cementing additives Lignosulfonate well cementing additives

C - Chemistry, Metallurgy

09

K

260/133, 31/19

C09K 8/46 (2006.01) C04B 24/18 (2006.01)

Patent

CA 1147327

ABSTRACT OF THE DISCLOSURE Wells and like borings into the earth's surface, especially those for the production of petroleum and gas, are very well and efficaciously cemented with cement compositions or pastes containing, as their effective gel control and cement set retardation agents, an additive that is a resulfonated, alkaline oxidized, hydrolyzed, partially desulfonated ligno- sulfonate product.

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