Activation of hydroxyethyl cellulose for use in heavy brines

Details Activation of hydroxyethyl cellulose for use in heavy brines Activation of hydroxyethyl cellulose for use in heavy brines

E - Fixed Constructions

21

B

31/26, 134/53

E21B 43/22 (2006.01) C08L 1/28 (2006.01) C09K 8/10 (2006.01)

Patent

CA 1189302

Abstract A viscosifying composition containing hydroxyethyl cel- lulose slurried in certain polar organic liquids, the compo- sition having been aged for a period of time sufficient to activate the hydroxyethyl cellulose such that it will hydrate in heavy brines having a density greater than about 13.5 pounds per gallon at ambient temperatures.

412541

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