Method of using urea as a sacrificial agent for surfactants...

Details Method of using urea as a sacrificial agent for surfactants... Method of using urea as a sacrificial agent for surfactants...

E - Fixed Constructions

21

B

31/30

E21B 43/22 (2006.01) C09K 8/58 (2006.01) C09K 8/84 (2006.01) E21B 43/24 (2006.01)

Patent

CA 2030330

METHOD OF USING UREA AS A SACRIFICIAL AGENT FOR SURFACTANTS IN ENHANCED OIL RECOVERY (D#79,012-F) ABSTRACT OF THE DISCLOSURE The disclosed invention is a method of injecting a solution or emulsion containing about 0.05% to about 10% by weight of urea as a sacrificial agent for surfactants into an underground formation in enhanced oil recovery operations, said underground formation having a temperature greater than about 130°F. HJD pg/aw:EX8N/OlACAN

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