Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2011-08-23
2011-08-23
Figueroa, John J (Department: 1765)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C507S211000, C507S269000, C166S282000, C166S283000, C166S305100
Reexamination Certificate
active
08003578
ABSTRACT:
Brine-based well treatment compositions containing alkali nitrate exhibit greater thermal stability when used in deep wells than substantially similar brine-based well treatment compositions which do not contain an alkali nitrate. The brine is thickened with a water-soluble crosslinkable polymer and crosslinking agent. The enhanced thermal stability of the well treatment compositions allows use of the fluids at elevated temperatures, for instance as high as 400° F.
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Cawiezel Kay E.
Comeaux Bruce A.
Monroe Terry D.
Vollmer Daniel P.
Baker Hughes Incorporated
Figueroa John J
Jones John Wilson
Jones & Smith, LLP
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