Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2011-08-23
2011-08-23
Cano, Milton I (Department: 1763)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C507S219000, C166S305100, C166S307000, C166S308100
Reexamination Certificate
active
08003577
ABSTRACT:
A method of treating a subterranean formation penetrated by a wellbore utilizes a treating fluid formed from an aqueous solution of a water-soluble polymer. The treating fluid further contains a crosslinking agent and an optional delayed release alkaline additive. The delayed release alkaline additive may be at least one of urea, a urea derivative, a solid alkaline earth metal carbonate, a solid alkaline earth metal oxide and combinations of these. The treating fluid further includes an acidic pH adjusting agent used in an amount to provide the treating fluid with a pH of less than about 5. The treating fluid is then introduced into the formation.
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Abad Carlos
Howard Paul R.
Hutchins Richard D.
Li Leiming
Lin Lijun
Cano Milton I
Cate David
Greene Rachel
Griffin Jeff
Li Aiqun
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