Wells – Processes – Chemical inter-reaction of two or more introduced materials
Reexamination Certificate
2007-05-15
2007-05-15
Suchfield, George (Department: 3676)
Wells
Processes
Chemical inter-reaction of two or more introduced materials
C166S283000, C166S305100, C166S308200, C166S308300, C172S072000, C507S245000, C507S265000
Reexamination Certificate
active
10975730
ABSTRACT:
The present invention generally relates to a method for treating a subterranean formation with an aqueous viscoelastic treating fluid that an aqueous base fluid and one or more non-ionic amido amine oxide surfactant gelling agents. The treatment method comprises injecting the aqueous viscoelastic surfactant treating fluid through a wellbore and into the subterranean formation under conditions effective to control fluid loss, and breaking the gel of the aqueous viscoelastic treating fluid subsequent to treating said formation.
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McElfresh Paul M.
Williams Chad F.
Akzo Nobel N.V.
Mancini Ralph J.
Suchfield George
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