Wells – Processes – Chemical inter-reaction of two or more introduced materials
Reexamination Certificate
2006-06-27
2006-06-27
Bates, Zakiya W. (Department: 3676)
Wells
Processes
Chemical inter-reaction of two or more introduced materials
C166S280200, C166S308400
Reexamination Certificate
active
07066262
ABSTRACT:
This invention relates to reduced volatility gelled liquid hydrocarbon treatment fluids and methods of their use and preparation. In one embodiment, this invention provides a method of treating a portion of a subterranean formation comprising: providing a reduced volatility gelled liquid hydrocarbon treatment fluid that comprises a liquid hydrocarbon and a gelling agent that comprises a polyvalent metal salt of a phosphoric acid ester, and treating the portion of the subterranean formation with the reduced volatility gelled liquid hydrocarbon treatment fluid. In another embodiment, this invention provides a gelled liquid hydrocarbon treatment fluid: that comprises a liquid hydrocarbon and a gelling agent that comprises a polyvalent metal salt of a phosphoric acid ester; that has a concentration of less than about 250 mg/liter of trialkyl phosphate esters that have a molecular weight of less than about 350; and that has a diester-to-monoester content molar ratio of at least about 2:1.
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Hochwalt et al., “Alkyl Esters of Phosphoric Acid,” IND and ENG'G Chemistry, vol. 34, at 20 (1942).
Baker & Botts
Bates Zakiya W.
Halliburton Energy Service,s Inc.
Kent Robert A.
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