Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2007-10-12
2010-02-16
Seidleck, James (Department: 1796)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C507S240000, C507S241000, C507S244000, C507S246000, C507S254000, C507S256000, C507S260000, C507S266000, C507S267000, C166S308200, C166S308600, C166S311000
Reexamination Certificate
active
07662756
ABSTRACT:
A fluid for use in a subterranean formation penetrated by a wellbore, the fluid comprising: (a) water; (b) an orthoester; and (c) a surfactant comprising a tertiary alkyl amine ethoxylate generally represented by the following formula:in-line-formulae description="In-line Formulae" end="lead"?(CH2—CH2—O)XHin-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?R—N<in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?(CH2—CH2—O)YHin-line-formulae description="In-line Formulae" end="tail"?wherein R is an alkyl group or aryl group, and wherein X and Y are each independently at least one. A method of fracturing a subterranean formation, comprising the step of forming a foamed fracturing fluid comprising water; an orthoester; a surfactant comprising a tertiary alkyl amine ethoxylate generally represented by the formula above; and a gas. The method also provides the step of introducing the foamed fracturing fluid into a subterranean formation at a pressure sufficient to create a fracture in the subterranean formation.
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McMechan David
Todd Bradley L.
Welton Thomas D.
Booth Albanesi & Schroeder LLC
Figueroa John J
Halliburton Energy Service,s Inc.
Kent Robert A.
Seidleck James
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