Earth boring – well treating – and oil field chemistry – Well treating – Contains inorganic component other than water or clay
Reexamination Certificate
2005-02-23
2008-03-18
Gulakowski, Randy (Department: 1796)
Earth boring, well treating, and oil field chemistry
Well treating
Contains inorganic component other than water or clay
C166S308100, C166S308300, C166S308500, C507S211000, C507S213000, C507S214000
Reexamination Certificate
active
07345013
ABSTRACT:
A composition useful for making gelled fluids by crosslinking hydratable polymers is an aqueous solution of zirconium complexed with carbonate and bicarbonate as the only multidentate ligands complexed with zirconium. The composition also provides pH modifying capability and the crosslinking is delayed, so that the single composition replaces several liquid additives previously necessary for generation of fluids used, for example, in hydraulic fracturing.
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Cate David
Fonseca Darla
Gulakowski Randy
Kugel Timothy J.
Nava Robin
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