Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component
Reexamination Certificate
2011-04-12
2011-04-12
Kugel, Timothy J. (Department: 1765)
Earth boring, well treating, and oil field chemistry
Earth boring
Contains organic component
C507S110000, C507S117000, C507S209000, C507S213000, C507S219000, C507S237000, C507S904000
Reexamination Certificate
active
07923414
ABSTRACT:
Embodiments of this invention relate to a composition and a method for tailoring the rheology of a fluid for use in the oil field services industry including forming a fluid comprising a tetrakis(hydroxyalkyl) phosphonium salt and a polymer, and exposing the fluid to a temperature of about 20° C. to about 200° C., wherein a viscosity is observed that is at least about 5 percent different than if no salt were present. Embodiments of this invention also relate to a composition and a method for tailoring the rheology of a fluid for use in the oil field services industry including forming a fluid comprising a tetrakis(hydroxyalkyl) phosphonium salt and diutan and/or guar and/or guar derivatives and/or a combination thereof, and exposing the fluid to a temperature of about 20° C. to about 163° C., wherein a viscosity is observed that is at least about 5 percent lower than if no salt were present. Embodiments of this invention also relate to a composition and a method for tailoring the rheology of a fluid for use in the oil field services industry including forming a fluid comprising a tetrakis(hydroxyalkyl) phosphonium salt and xanthan, and exposing the fluid to a temperature of about 20° C. to about 200° C., wherein a viscosity is observed that is at least about 5 percent higher than if no salt were present.
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Ali Syed
Li Leiming
Lin Lijun
Samuel Mathew M.
Cate David
Greene Rachel
Kugel Timothy J.
Nava Robin
Schlumberger Technology Corporation
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