Foamed treatment fluids and associated methods

Details Foamed treatment fluids and associated methods Foamed treatment fluids and associated methods

2006-07-18

2006-07-18

Suchfield, George (Department: 3676)

Boring or penetrating the earth

Processes

Boring with specific fluid

C166S267000, C166S278000, C166S302000, C166S308600, C166S309000, C166S312000, C175S069000, C507S102000, C507S134000, C507S135000, C507S202000, C507S252000, C507S254000, C507S259000, C507S904000

Reexamination Certificate

active

07077219

ABSTRACT:
Methods in which temperature is used to control the foaming and/or defoaming of foamed treatment fluids comprising an aqueous liquid, an ionic foaming surfactant, and a gas are provided. A method of treating at least a portion of a subterranean formation is provided, the method comprising: providing a treatment fluid having a foam transition temperature, the treatment fluid comprising an aqueous liquid, and an ionic foaming surfactant; foaming the treatment fluid to form a foamed treatment fluid; circulating the foamed treatment fluid in a well bore penetrating the subterranean formation; and defoaming at least a substantial portion of the foamed treatment fluid, the defoaming comprising lowering the temperature of the foamed treatment fluid to about at or below the foam transition temperature.

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