Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2007-07-17
2009-08-25
Kugel, Timothy J. (Department: 1796)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C166S308100, C166S308200, C166S308300, C507S119000, C507S120000, C507S140000, C507S145000, C507S224000, C507S269000, C507S277000
Reexamination Certificate
active
07579302
ABSTRACT:
Embodiments relate to improving the performance of anionic friction reducing polymers in water containing multivalent ions. Exemplary embodiments relate to methods of improving the performance of anionic friction reducing polymers in a subterranean treatment, wherein the method comprises adding a complexing agent to water comprising multivalent ions. The method comprises adding the anionic friction reducing polymer to the water comprising the multivalent ions, wherein the anionic friction reducing polymer is added in an amount less than or equal to about 0.15% by weight of the water. The method comprises introducing the water comprising the multivalent ions, the complexing agent and the anionic friction reducing polymer into at least a portion of the subterranean formation such that the friction reducing polymer reduces energy loss due to turbulence in the water. The complexing agent complexes with at least a portion of the multivalent ions in the water such that the reduction of energy loss by the friction reducing polymer is improved.
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Chatterji Jiten
Hanes, Jr. Rob E.
King Bobby J.
King Karen L.
McMechan David E.
Halliburton Energy Service,s Inc.
Kent Robert A.
Kugel Timothy J.
Tumey L.L.P.
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