Defoaming methods and compositions

Details Defoaming methods and compositions Defoaming methods and compositions

2007-12-18

2007-12-18

Bates, Zakiya W. (Department: 3676)

Wells

Processes

Material placed in pores of formation to treat resident...

C166S293000, C166S300000

Reexamination Certificate

active

11683214

ABSTRACT:
Embodiments of the present invention are directed to defoaming methods and compositions for well treatment fluids. An exemplary embodiment of the present invention provides a method of treating a subterranean formation, comprising introducing a treatment fluid comprising a liquid and a defoaming composition into a subterranean formation, the defoaming composition comprising an amide of carboxylic acid, a polypropylene glycol, an ethoxylated and propoxylated fatty alcohol, an ethoxylated alcohol comprising from 3 carbons to 6 carbons, and a hydrophobic silica in an amount of up to about 3% by weight of the defoaming composition.

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