Viscoelastic surfactant fluids and associated methods

Details Viscoelastic surfactant fluids and associated methods Viscoelastic surfactant fluids and associated methods

2007-11-27

2007-11-27

Gay, Jennifer H. (Department: 3676)

Wells

Processes

Placing fluid into the formation

C166S282000, C507S259000

Reexamination Certificate

active

11058660

ABSTRACT:
Provided are treatment fluids that comprise an aqueous based fluid, a water-soluble salt, and a methyl ester sulfonate surfactant, and associated methods. In one embodiment, a method of treating a subterranean formation is provided, the method comprising: providing a treatment fluid comprising an aqueous base fluid, a water-soluble salt, and a methyl ester sulfonate surfactant; and introducing the treatment fluid into a well bore that penetrates the subterranean formation. Also provided are methods of fracturing a subterranean formation, and methods of removing formation particulates from a well bore or a near well bore region. In some instances, the treatment fluids exhibit viscoelastic behavior which may be due, at least in part, to the association of at least a portion of the methyl ester sulfonate surfactant into a plurality of micellar structures.

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