Wells – Processes – Placing fluid into the formation
Reexamination Certificate
2007-01-19
2010-06-08
Bates, Zakiya W (Department: 3676)
Wells
Processes
Placing fluid into the formation
C166S300000, C166S285000, C166S295000
Reexamination Certificate
active
07730950
ABSTRACT:
Methods of using water-soluble hydrophobically modified polymers to treat intervals of a subterranean formation having variable permeabilities. An exemplary embodiment provides a method of treating an interval of a subterranean formation having a permeability that varies. The method comprises contacting the interval with a water-soluble hydrophobically modified polymer capable of selectively reducing the effective permeability of the interval to water without a comparable reduction of the effective permeability of the interval to hydrocarbons. The hydrophobically modified polymer modifies the interval to have a more uniform permeability without substantially preventing the flow of fluids through the interval. The method further comprises introducing a treatment fluid into the interval. The more uniform permeability of the interval allows for a more uniform treatment of the interval by the treatment fluid than would be allowed without treatment of the interval with the hydrophobically modified polymer.
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Brown David L.
Nguyen Philip D.
Bates Zakiya W
DiTrani Angela M
Halliburton Energy Service,s Inc.
Kent Robert A.
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