Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2007-12-25
2007-12-25
Zimmer, Marc S. (Department: 1712)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C507S244000, C166S270200, C405S128500
Reexamination Certificate
active
10865075
ABSTRACT:
A method and composition are described for improving recovery of oil from an oil reservoir. The method includes adding an effective amount of a fatty acid alkyl ester oil recovery composition to an oil reservoir and recovering oil from the reservoir. The composition may include in predominant proportion a fatty acid alkyl ester as well as effective concentrations of a surfactant, a colloid, and an acid. One exemplary composition includes 96% soy methyl ester, 3% surfactant, and 1% vinegar.
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