Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2006-05-23
2006-05-23
Wilson, James O. (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C536S123100, C536S090000, C536S095000, C536S096000, C536S084000, C536S085000, C507S213000, C507S200000, C507S100000, C166S170000, C166S294000, C166S295000, C424S659000, C424S660000, C514S839000, C514S054000
Reexamination Certificate
active
07049436
ABSTRACT:
Alcohol based hydraulic fracturing fluids useful for treating oil and gas wells are disclosed. The fluids are compatible with carbon dioxide, and comprise an alcohol, a polymer, a crosslinking agent, and a breaker. Hydroxypropyl guar with a molar substitution of about 1.2 to about 2.2 is identified as a presently preferred polymer.
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Gupta D. V. Satyanarayana
Jerat Anita C
Niechwiadowicz Greg
BJ Services Company
Howrey LLP
Khare Devesh
Wilson James O.
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