Defoaming methods and compositions

Details Defoaming methods and compositions Defoaming methods and compositions

2011-01-04

2011-01-04

Figueroa, John J (Department: 1765)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C507S219000, C507S265000, C507S266000, C507S269000, C166S285000

Reexamination Certificate

active

07863225

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 defoaming a well treatment fluid, comprising combining a defoaming composition with the well treatment fluid, wherein the defoaming composition comprises an amide of a 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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