Foamed cement slurries, additives and methods

Details Foamed cement slurries, additives and methods Foamed cement slurries, additives and methods

2006-03-21

2006-03-21

Bagnell, David (Department: 3672)

Wells

Processes

Cementing, plugging or consolidating

C166S309000, C106S646000, C106S677000, C507S202000

Reexamination Certificate

active

07013975

ABSTRACT:
The present invention relates to foamed cement slurries, additives and methods. A foamed cement slurry of the invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and an environmentally benign foaming and stabilizing additive comprising a mixture of an ammonium salt of an alkyl ether sulfate surfactant, a cocoamidopropyl betaine surfactant, a cocoamidopropyl dimethylamine oxide surfactant, sodium chloride and water.

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