Wells – Processes – Material placed in pores of formation to treat resident...
Reexamination Certificate
2005-07-19
2005-07-19
Walker, Zakiya (Department: 3672)
Wells
Processes
Material placed in pores of formation to treat resident...
C166S300000, C166S305100, C166S312000, C507S209000, C507S211000, C507S213000, C507S214000, C507S215000, C507S216000, C507S273000, C507S922000
Reexamination Certificate
active
06918445
ABSTRACT:
Methods and compositions for treating subterranean zones penetrated by well bores utilizing environmentally safe viscous fluids including a solubility increasing boron complex or ester forming compound. A method of the invention comprises the following steps. A viscous treating fluid composition is provided comprising water, a viscosity increasing polymer and a water soluble delayed polymer breaker that comprises a mixture of sodium perborate tetrahydrate and a solubility increasing boron complex or ester forming compound. The viscous treating fluid composition is introduced into the subterranean zone wherein the viscous treating fluid is allowed to break into a thin fluid of reduced viscosity.
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Foreign communication from a related counterpart application dated Aug. 16, 2004.
Frost Keith A.
Todd Bradley L.
Dougherty, Jr. C. Clark
Halliburton Energy Service,s Inc.
Kent Robert A.
Walker Zakiya
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