Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2006-01-24
2006-01-24
Tucker, Philip C. (Department: 1712)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C562S091000, C507S211000, C507S225000, C507S261000, C507S262000, C507S266000, C166S305100, C166S270100
Reexamination Certificate
active
06989355
ABSTRACT:
The present invention is directed to an under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes. The present invention is also directed to a method for enhancing the recovery of oil from a subterranean reservoir which method employs the under-neutralized alkylxylene sulfonic acid compositions of the present invention. The under-neutralized alkylxylene sulfonic acid compositions are employed in an aqueous media. The method optionally employs suitable co-surfactants, such as alcohols, alcohol ethers, polyalkylene glycols, poly(oxyalkylene)glycols and/or poly(oxyalkylene)glycol ethers.
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Campbell Curt B.
Sinquin Gilles P.
Chevron Oronite Company LLC
Kelley Sarita B.
Tucker Philip C.
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