Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2005-12-06
2005-12-06
Tucker, Philip C. (Department: 1712)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C507S211000, C507S244000, C507S246000, C507S261000, C166S270000, C166S270100, C166S311000
Reexamination Certificate
active
06972274
ABSTRACT:
The present invention generally relates to a method and a composition useful in restoring the permeability of a porous underground petroleum containing formation. Restoring permeability to the formation enhances the injectivity thereby accelerating petroleum recovery. The method of the invention comprises treating said formation with a composition which comprises a combination of at least one nonionic compound, preferably an alkoxylated alcohol, with at least one cationic compound, preferably a quaternary ammonium compound, in an amount effective to improve the permeability of the formation. The composition may also optionally contain an alkyl glycoside.
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Gadberry James F.
Johnson Andress K.
Slikta Alberto
Akzo Nobel N.V.
Mancini Ralph J.
Tucker Philip C.
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