Patents by Inventor Doan Ngoc Nguyen

Doan Ngoc Nguyen 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).

  • Directional antennas for electromagnetic mapping in a borehole
    Patent number: 9638827
    Abstract: A bottom hole assembly used for a field operation is disclosed herein. The bottom hole assembly can include at least one directional antenna disposed on an outer surface of a first tubing pipe of a tubing string, where the at least one directional antenna receives a first electric current from at least one power source, where the first electric current generates a first magnetic field that radiates from the at least one directional antenna into a formation. The bottom hole assembly can also include at least one receiver disposed on a second tubing pipe of the tubing string, where the at least one receiver receives the first magnetic field returning from the formation.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: May 2, 2017
    Assignees: LOS ALAMOS NATIONAL SECURITY, LLC, CHEVRON U.S.A. INC.
    Inventors: David Wesley Reagor, Doan Ngoc Nguyen, Stephen Paul Ashworth
  • Directional Antennas For Electromagnetic Mapping In a Borehole
    Publication number: 20160091628
    Abstract: A bottom hole assembly used for a field operation is disclosed herein. The bottom hole assembly can include at least one directional antenna disposed on an outer surface of a first tubing pipe of a tubing string, where the at least one directional antenna receives a first electric current from at least one power source, where the first electric current generates a first magnetic field that radiates from the at least one directional antenna into a formation. The bottom hole assembly can also include at least one receiver disposed on a second tubing pipe of the tubing string, where the at least one receiver receives the first magnetic field returning from the formation.
    Type: Application
    Filed: September 26, 2014
    Publication date: March 31, 2016
    Applicants: CHEVRON U.S.A. INC., LOS ALAMOS NATIONAL SECURITY, LLC
    Inventors: David Wesley Reagor, Doan Ngoc Nguyen, Stephen Paul Ashworth