Marc A Baures

US Patent:

8314231, Nov 20, 2012

Filed:

May 1, 2008

Appl. No.:

12/599205

Inventors:

Marc A. Baures - Ettrick WI, US
Charles Alfred Krier - Brookfield WI, US
Henry W. Cox - Blacksburg VA, US

Assignee:

Hydrite Chemical Co. - Brookfield WI

International Classification:

C07H 1/00
C07H 3/00
C08B 37/00

US Classification:

536124

Abstract:

Methods for depolymerizing polysaccharides are disclosed. In certain exemplary methods, polysaccharides having a first average molecular weight can be reacted with hydroxyl free radicals to produce polysaccharides having a second average molecular weight lower than the first average molecular weight. The hydroxyl free radicals can be formed by interaction of an oxidant with a catalyst comprising a polydentate ligand complexed with a metal ion. In certain exemplary embodiments, the oxidant can be hydrogen peroxide, and the catalyst can be iron methylglycine diacetate or iron-2,3,4,5,6 pentahydroxyhexanoate.

US Patent:

20170362924, Dec 21, 2017

Filed:

Sep 6, 2017

Appl. No.:

15/696379

Inventors:

- Verona WI, US
Marc Baures - Ettrick WI, US
Larry Kinsman - Verona WI, US

International Classification:

E21B 43/25
C09K 8/03
C09K 8/62
C09K 8/52
C09K 8/50

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.

US Patent:

20170022409, Jan 26, 2017

Filed:

Apr 3, 2015

Appl. No.:

15/301302

Inventors:

- Verona WI, US
Marc Baures - Ettrick WI, US
Larry Kinsman - Verona WI, US

International Classification:

C09K 8/62
E21B 43/267
C09K 8/80
E21B 43/26

Abstract:

A method of reducing the viscosity of a viscosified fluid in an underground drilling operation comprising, where the introduction of a chelated transition metal catalyzes the viscosity reduction of the viscosified fluid. The chelated transition metal may be ferric methylglycinediacetate. Additionally, an uninhibited oxidizing agent, such as a peroxygen compound, may also be present in combination with the chelated transition metal to catalyze the viscosity reduction of the viscosified fluid.

US Patent:

20150275064, Oct 1, 2015

Filed:

Mar 27, 2015

Appl. No.:

14/670720

Inventors:

- Verona WI, US
Marc Baures - Ettrick WI, US
Larry Kinsman - Verona WI, US

International Classification:

C09K 8/05
E21B 43/25
C09K 8/66

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.