Patents by Inventor Mark Chih-Hung

Mark Chih-Hung 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).

  • Methods for performing simulation of surfactant flooding of a hydrocarbon reservoir
    Patent number: 8271249
    Abstract: The present invention performs numerical simulation of surfactant flooding during enhanced oil recovery of a given hydrocarbon reservoir. The present invention utilizes an improved method for determining relative permeability while maintaining physical consistency when the phase behavior varies between different phase Types. This new relative permeability model maintains the physical consistency in the transition from Type II(?) to Type III to Type II(+) systems and vice versa.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: September 18, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Irene Lee Gullapalli, Mark Chih-Hung Chien
  • Methods For Performing Simulation of Surfactant Flooding of a Hydrocarbon Reservoir
    Publication number: 20110246164
    Abstract: The present invention performs numerical simulation of surfactant flooding during enhanced oil recovery of a given hydrocarbon reservoir. The present invention utilizes an improved method for determining relative permeability while maintaining physical consistency when the phase behavior varies between different phase Types. This new relative permeability model maintains the physical consistency in the transition from Type II(?) to Type III to Type II(+) systems and vice versa.
    Type: Application
    Filed: June 15, 2011
    Publication date: October 6, 2011
    Applicant: Chevron U.S.A. Inc.
    Inventors: Irene Lee Gullapalli, Mark Chih-Hung
  • Methods for performing simulation of surfactant flooding of a hydrocarbon reservoir
    Patent number: 7983886
    Abstract: The present invention performs numerical simulation of surfactant flooding during enhanced oil recovery of a given hydrocarbon reservoir. The present invention utilizes an improved method for determining relative permeability while maintaining physical consistency when the phase behavior varies between different phase Types. This new relative permeability model maintains the physical consistency in the transition from Type II(?) to Type III to Type II(+) systems and vice versa.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: July 19, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Irene Lee Gullapalli, Mark Chih-Hung
  • METHODS FOR PERFORMING SIMULATION OF SURFACTANT FLOODING OF A HYDROCARBON RESERVOIR
    Publication number: 20090070085
    Abstract: The present invention performs numerical simulation of surfactant flooding during enhanced oil recovery of a given hydrocarbon reservoir. The present invention utilizes an improved method for determining relative permeability while maintaining physical consistency when the phase behavior varies between different phase Types. This new relative permeability model maintains the physical consistency in the transition from Type II(?) to Type III to Type II(+) systems and vice versa.
    Type: Application
    Filed: September 10, 2007
    Publication date: March 12, 2009
    Inventors: Irene Lee Gullapalli, Mark Chih-Hung