The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 15, 2005
Filed:
Jan. 08, 2003
Duane S. Treybig, Sugar Land, TX (US);
Grahame N. Taylor, Houston, TX (US);
James A. Krogh, Janesville, WI (US);
Michael J. Williams, Madison, WI (US);
Duane S. Treybig, Sugar Land, TX (US);
Grahame N. Taylor, Houston, TX (US);
James A. Krogh, Janesville, WI (US);
Michael J. Williams, Madison, WI (US);
Nalco Energy Services, L.P., Sugar Land, TX (US);
Tomah Products, Inc., Milton, WI (US);
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.