Patents by Inventor G. Paul Willhite

G. Paul Willhite has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Polyelectrolyte complexes for oil and gas applications
    Patent number: 8372786
    Abstract: A polyelectrolyte complex for the controlled release of an oil and gas field chemical selected from the group consisting of (a) a gel-forming or cross-linking agent, (b) a scale inhibitor, (c) a corrosion inhibitor, (d) an inhibitor of asphaltene or wax deposition, (e) a hydrogen sulfide scavenger, (f) a hydrate inhibitor, (g) a breaking agent, and a surfactant.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: February 12, 2013
    Assignee: University of Kansas
    Inventors: Cory Berkland, Mary Cordova, Jenn-Tai Liang, G. Paul Willhite
  • Polyelectrolyte complexes for oil and gas applications
    Patent number: 8183184
    Abstract: A polyelectrolyte complex for the controlled release of an oil and gas field chemical selected from the group consisting of (a) a gel-forming or cross-linking agent, (b) a scale inhibitor, (c) a corrosion inhibitor, (d) an inhibitor of asphaltene or wax deposition, (e) a hydrogen sulfide scavenger, (f) a hydrate inhibitor, (g) a breaking agent, and a surfactant.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: May 22, 2012
    Assignee: University of Kansas
    Inventors: Cory Berkland, Mary Cordova, Jenn-Tai Liang, G. Paul Willhite
  • Polyelectrolyte Complexes For Oil And Gas Applications
    Publication number: 20100056399
    Abstract: A polyelectrolyte complex for the controlled release of an oil and gas field chemical selected from the group consisting of (a) a gel-forming or cross-linking agent, (b) a scale inhibitor, (c) a corrosion inhibitor, (d) an inhibitor of asphaltene or wax deposition, (e) a hydrogen sulfide scavenger, (f) a hydrate inhibitor, (g) a breaking agent, and a surfactant.
    Type: Application
    Filed: September 22, 2009
    Publication date: March 4, 2010
    Inventors: Cory Berkland, Mary Cordova, Jenn-Tai Liang, G. Paul Willhite
  • Polyelectrolyte complexes as delayed gelling agents for oil and gas applications
    Patent number: 7644764
    Abstract: A gel-forming composition for reducing the permeability of a subterranean formation or zone comprising a water soluble polymer (e.g., Alcoflood® 935) and a polyelectrolyte gelling agent comprising a polycation (e.g., polyalkylene imine) and a polyanion (e.g., dextran sulfate) is provided. The gel-forming composition is used to delay gelation in the subterranean formation.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: January 12, 2010
    Assignee: University of Kansas
    Inventors: Cory Berkland, Mary Cordova, Jenn-Tai Liang, G. Paul Willhite
  • Polyelectrolyte Complexes as Delayed Gelling Agents for Oil and Gas Applications
    Publication number: 20080223578
    Abstract: A polyelectrolyte complex for the controlled or delayed gelation of a water and hydrocarbon producing subterranean formation.
    Type: Application
    Filed: August 30, 2007
    Publication date: September 18, 2008
    Applicant: University of Kansas
    Inventors: Cory Berkland, Mary Cordova, Jenn-Tai Liang, G. Paul Willhite
  • Polyelectrolyte complexes for oil and gas applications
    Publication number: 20080058229
    Abstract: A polyelectrolyte complex for the controlled release of an oil and gas field chemical selected from the group consisting of (a) a gel-forming or cross-linking agent, (b) a scale inhibitor, (c) a corrosion inhibitor, (d) an inhibitor of asphaltene or wax deposition, (e) a hydrogen sulfide scavenger, (f) a hydrate inhibitor, (g) a breaking agent, and a surfactant.
    Type: Application
    Filed: September 5, 2006
    Publication date: March 6, 2008
    Inventors: Cory Berkland, Mary Cordova, Jenn-Tai Liang, G. Paul Willhite