Wells – Processes – Chemical inter-reaction of two or more introduced materials
Reexamination Certificate
2008-01-29
2008-01-29
Bates, Zakiya W. (Department: 3676)
Wells
Processes
Chemical inter-reaction of two or more introduced materials
C166S294000
Reexamination Certificate
active
11170237
ABSTRACT:
Crosslinkable-polymer compositions are provided that may be useful for, among other things, reducing, stopping, or diverting the flow of fluids in subterranean formations. The crosslinkable-polymer compositions may comprise an aqueous fluid, a chitosan-reacting polymer, chitosan, and a gelation-retarding additive comprising an acid derivative. Various methods of use are also provided.
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Dalrymple Eldon D.
Eoff Larry S.
Reddy B. Raghava
Vasquez Julio
Baker & Botts L.L.P.
Bates Zakiya W.
DiTrani Angela
Halliburton Energy Service,s Inc.
Kent Robert A.
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