Method of chemically delaying peroxygen based viscosity reduction reactions
AssigneeOrin Technologies, LLC
InventorsAdam Mohs, Marc Baures, Larry Kinsman
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Abstract
A method of time delayed reduction in the molecular weight of polymers in a viscosified fluid and a method of time delayed breaking of viscosified fluids through treatment of the viscosified fluid with a viscosity breaking composition. The viscosity breaking composition is formed from a peroxygen compound, a peroxygen inhibiting agent and a peroxygen catalyzing agent, where the relative concentration of the components determines the duration of the a time interval require for breaking the viscosified fluid.
Claims13
A time delayed viscosity breaking composition for reducing a molecular weight of polymers in a viscosified fluid, the composition in a first configuration comprising:
- a stabilized intermediate inhibitor mixture formed from a combination of a first volume of a peroxygen compound, a second volume of a peroxygen inhibiting agent and a third volume of a peroxygen catalyzing agent;
- the first volume of the peroxygen compound comprising a peroxide;
- the second volume of the peroxygen inhibiting agent comprising a phosphate, wherein the stabilized intermediate inhibitor mixture is formed of between 0.5% and 10.0% by weight of the second volume of the peroxygen inhibiting agent;
- the third volume of the peroxygen catalysing agent comprising a ferric methylglycine diacetate;
- and
- wherein a relative ratio of the first and second volumes determine a time delay for reducing the molecular weight of polymers in the viscosified fluid after introducing the stabilized intermediate inhibitor mixture into the viscosified fluid.
A time delayed viscosity breaking composition for reducing a molecular weight of polymers in a viscosified fluid, the composition in a first configuration comprising:
- a stabilized intermediate inhibitor mixture formed from a combination of a first volume of a peroxygen compound and a second volume of a peroxygen inhibiting agent;
- the first volume of the peroxygen compound comprising a peroxide;
- the second volume of the peroxygen inhibiting agent comprising a phosphate, wherein the stabilized intermediate inhibitor mixture is formed of between 0.5% and 10.0% by weight of the second volume of the peroxygen inhibiting agent;
- and,
- a third volume of a ferric methylglycine diacetate;
- and
- wherein a relative ratio of the first and second volumes and the relative ratio of the third volume to a volume of the viscosified fluid determines a time delay for reducing the molecular weight of polymers in the viscosified fluid after introducing the stabilized intermediate inhibitor mixture into the viscosified fluid.
Dependencies are inferred from the claim text.