Patents by Inventor Xuhua Gao

Xuhua Gao 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).

  • SYSTEMS, METHODS AND TOOLS FOR SUBTERRANEAN ELECTROCHEMICAL CHARACTERIZATION AND ENTHALPY MEASUREMENT IN GEOTHERMAL RESERVOIRS
    Publication number: 20210404986
    Abstract: The present disclosure is directed to systems, methods and tools that measure ionic concentrations and downhole enthalpy of a flowing geothermal fluid in real-time at high-temperature and pressure. The systems, methods and tools include measuring the concentration of selected naturally occurring ions found in the liquid phase of the geothermal fluid throughout the wellbore using novel electrochemical sensor technologies. The change in liquid-phase ion concentration will be used to calculate the proportion of liquid to steam and allow for accurate enthalpy measurements. The techniques and technologies described here can be applied to any application of electrochemical sensing in extreme environments.
    Type: Application
    Filed: September 14, 2021
    Publication date: December 30, 2021
    Inventors: Grzegorz Cieslewski, Xuhua Gao, Ryan Falcone Hess, Avery T. Cashion, IV, William Corbin, Sasha Egan, Roland N. Horne
  • Systems, methods and tools for subterranean electrochemical characterization and enthalpy measurement in geothermal reservoirs
    Patent number: 11156583
    Abstract: The present disclosure is directed to systems, methods and tools that measure ionic concentrations and downhole enthalpy of a flowing geothermal fluid in real-time at high-temperature and pressure. The systems, methods and tools include measuring the concentration of selected naturally occurring ions found in the liquid phase of the geothermal fluid throughout the wellbore using novel electrochemical sensor technologies. The change in liquid-phase ion concentration will be used to calculate the proportion of liquid to steam and allow for accurate enthalpy measurements. The techniques and technologies described here can be applied to any application of electrochemical sensing in extreme environments.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: October 26, 2021
    Assignees: National Technology & Engineering Solutions of Sandia, LLC, The Board of Trustees of the Leland Stanford Junior University
    Inventors: Grzegorz Cieslewski, Xuhua Gao, Ryan Falcone Hess, Avery T. Cashion, IV, William C. Corbin, Sasha Egan, Roland N. Horne