Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2011-08-16
2011-08-16
Kugel, Timothy J. (Department: 1765)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C507S203000, C507S905000, C507S922000, C516S198000, C516S204000, C516S917000
Reexamination Certificate
active
07998911
ABSTRACT:
A non-toxic, environmentally friendly, green flowback aid is disclosed that reduces water blockage when injected into a fractured reservoir. The composition includes an water soluble ester of a low molecular weight alcohol and a low molecular weight organic acid, an oil soluble ester of a low molecular weight alcohol and a high molecular weight fatty acid, one or more water soluble or dispersible nonionic surfactant(s) derived from vegetable or animal sources, one or more anionic or amphoteric surfactant(s) derived from animal or vegetable based sources, and, water. Compositions for low temperature applications are also disclosed that can remain fluid down to −41° F.
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Berger Christie Huimin
Berger Paul Daniel
Kugel Timothy J.
Oil Chem Technologies
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