Patents by Inventor Chen Xiyuan

Chen Xiyuan 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).

  • Formulations comprising recovered water and a viscosifier and associated methods
    Patent number: 11060017
    Abstract: High viscosity fracturing fluids for fracturing a subterranean formulation are prepared by: (i) selecting recovered water; (ii) contacting said recovered water with a viscosifying agent, wherein said viscosifying agent is selected from fenugreek gum, tara gum, locust bean gum, guar gum and derivatives of the aforesaid; (iii) contacting said recovered water with one or more other additives for example with a cross-linking agent (A) for cross-linking said viscosifying agent, wherein contact of said recovered water with cross-linking agent (A) takes place when the pH of said recovered water is less than pH 6.5; (iv) adjusting the pH to pH 6.5-8.8.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: July 13, 2021
    Assignee: INDEPENDENCE OILFIELD CHEMICALS LLC
    Inventors: Christopher George Burke, Chen Xiyuan, John R. Willingham, Matthew Kye Yocham, Jeffrey C. Dawson
  • FORMULATIONS COMPRISING RECOVERED WATER AND A VISCOSIFIER, AND ASSOCIATED METHODS
    Publication number: 20190169489
    Abstract: High viscosity fracturing fluids for fracturing a subterranean formulation are prepared by: (i) selecting recovered water; (ii) contacting said recovered water with a viscosifying agent, wherein said viscosifying agent is selected from fenugreek gum, tara gum, locust bean gum, guar gum and derivatives of the aforesaid; (iii) contacting said recovered water with one or more other additives for example with a cross-linking agent (A) for cross-linking said viscosifying agent, wherein contact of said recovered water with cross-linking agent (A) takes place when the pH of said recovered water is less than pH 6.5; (iv) adjusting the pH to pH 6.5-8.8.
    Type: Application
    Filed: July 13, 2017
    Publication date: June 6, 2019
    Inventors: Christopher George Burke, Chen Xiyuan, John R Willingham, Matthew Kye Yocham, Jeffrey c. Dawson