Patents by Inventor Nancy Hyangsil Choi

Nancy Hyangsil Choi 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).

  • System and method for fracturing rock in tight reservoirs
    Patent number: 9057261
    Abstract: Methods and systems are provided for fracturing rock in a formation to enhance the production of fluids from the formation. In one exemplary method, one or more wells are drilled into a reservoir, wherein each well comprises a main wellbore with two or more lateral wellbores drilled out from the main wellbore. One or more explosive charges are placed within each of the two or more lateral wellbores, and the explosive charges are detonated to generate pressure pulses which at least partially fracture a rock between the two or more lateral wellbores. The detonations are timed such that one or more pressure pulses emanating from different lateral wellbores interact.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: June 16, 2015
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Clifford Walters, Nancy Hyangsil Choi, Michael Edward McCracken, Jeff H. Moss
  • System and Method For Fracturing Rock In Tight Reservoirs
    Publication number: 20130000908
    Abstract: Methods and systems are provided for fracturing rock in a formation to enhance the production of fluids from the formation. In one exemplary method, one or more wells are drilled into a reservoir, wherein each well comprises a main wellbore with two or more lateral wellbores drilled out from the main wellbore. One or more explosive charges are placed within each of the two or more lateral wellbores, and the explosive charges are detonated to generate pressure pulses which at least partially fracture a rock between the two or more lateral wellbores. The detonations are timed such that one or more pressure pulses emanating from different lateral wellbores interact.
    Type: Application
    Filed: February 17, 2011
    Publication date: January 3, 2013
    Inventors: Clifford C. Walters, Nancy Hyangsil Choi, Michael Edward McCracken, Jeff H. Moss