Thermally stable mobility control reagents for harsh...

Details Thermally stable mobility control reagents for harsh... Thermally stable mobility control reagents for harsh...

E - Fixed Constructions

21

B

31/23

E21B 43/22 (2006.01) C09K 8/588 (2006.01)

Patent

CA 1226122

THERMALLY STABLE MOBILITY CONTROL REAGENTS FOR HARSH ENVIRONMENT RESERVOIRS ABSTRACT Polymers of 2-acrylamido-2-methylpropane sulfonic acid or its salts are used to maintain the viscosity or aqueous solutions thereof in the presence of divalent salt contain- ing-waters during the enhanced recovery of petroleum from sub-terranean petroleum-bearing deposits.

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