Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2007-01-02
2007-01-02
Buttner, David J. (Department: 1712)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C507S122000, C526S287000
Reexamination Certificate
active
10620041
ABSTRACT:
Compositions for increasing the thermal and pressure stability of well fluids viscosified using viscoelastic surfactants, the compositions including an effective amount of an oligomeric or polymeric compound that has a thermally stable backbone structure and at least one pendent viscoelastic surfactant functional group. Preferred compositions for increasing the stability of well fluids viscosified using monomeric viscoelastic surfactants include an effective amount of an oligomeric or polymeric compound that has a thermally stable backbone structure and a multiplicity of pendent viscoelastic surfactant functional groups attached to said backbone structure through relatively long hydrocarbon chains, 1 to 18 carbons in length.
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Abdur-Rahman Kamila B.
Arvie, Jr. Morris
Growcock Frederick B
Horton Robert L
Kippie David
Buttner David J.
M-I LLC
Osha & Liang LLP
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