Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2005-06-07
2005-06-07
Tucker, Philip C. (Department: 1712)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C507S235000, C507S236000, C507S237000, C507S238000, C507S260000, C507S090000
Reexamination Certificate
active
06903054
ABSTRACT:
A method of treating a hydrocarbon-containing formation is disclosed. The method includes injecting a well treating fluid into a well, wherein the well treating fluid includes a self-diverting acid that includes about 1% to 30% by weight of at least one acid selected from the group consisting of hydrochloric acid, sulfuric acid, phosphoric acid, formic acid, acetic acid, citric acid, maleic acid, hydrofluoric acid and mixtures thereof; and about 1% to 20% by volume of at least one viscoelastic surfactant selected from a family of compounds described bywhere R3contains at least 10 carbon atoms, p=1-6, R2contains 1-6 carbon atoms and R1contains 1-6 carbon atoms; and about 0.7% to 20% by weight scale inhibitor.
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Fu Diankui
Garcia-Lopez de Victoria Marieliz
Echols Brigitte L.
Mitchell Thomas O.
Nava Robin
Schlumberger Technology Corporation
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