Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component
Reexamination Certificate
2005-11-15
2005-11-15
Robertson, Jeffrey B. (Department: 1712)
Earth boring, well treating, and oil field chemistry
Earth boring
Contains organic component
C507S247000, C507S247000, C516S020000, C516S067000, C516S069000, C516S102000, C516S203000, C564S281000, C564S291000
Reexamination Certificate
active
06964940
ABSTRACT:
This invention is a method of preparing a quaternized amidoamine surfactant comprising reacting an amidotertiaryamine of formula with methyl halide and alkylene oxide, an aqueous quaternized amidoamine surfactant composition, a gelled aqueous composition comprising the quaternized amidoamine surfactant composition and one or more salts or alcohols and use of the gelled aqueous composition for fracturing subterranean formations.
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patent: 4851138 (1989-07-01), Jaroschek et al.
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patent: 2004/0214725 (2004-10-01), Moss
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Krogh James A.
Taylor Grahame N.
Treybig Duane S.
Williams Michael J.
Breininger Thomas M.
Martin Michael B.
Nalco Energy Services L.P.
Robertson Jeffrey B.
Tomah Products, Inc.
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