Patents by Inventor John Qiang Zhou

John Qiang Zhou 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).

  • Patent number: 11086046
    Abstract: A system and method for the calibration of downhole azimuthally sensitive resistivity tools is disclosed. The system and method can eliminate and/or compensate for the measurement errors due to the electronic circuit, the mechanical structure, etc., of the tool. The system and method also can validate the measurement accuracy. The downhole azimuthal resistivity logging tool can be, but not limited to, the LWD azimuthal resistivity tools with coil(s) oriented in the directions other than the tool axis. In one embodiment, the system is constructed by the azimuthal resistivity tool, a tilted calibration loop made of conductive wire; an external resistor; and an external inductor. Some other method embodiment comprises an azimuthal resistivity tool, a semicircular conductive wire connected with a conductivity rectangular wire, and the external resistor and inductor.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: August 10, 2021
    Assignee: MAXWELL DYNAMICS, INC.
    Inventors: Hu Li, John Qiang Zhou
  • Publication number: 20190331830
    Abstract: A system and method for the calibration of downhole azimuthally sensitive resistivity tools is disclosed. The system and method can eliminate and/or compensate for the measurement errors due to the electronic circuit, the mechanical structure, etc., of the tool. The system and method also can validate the measurement accuracy. The downhole azimuthal resistivity logging tool can be, but not limited to, the LWD azimuthal resistivity tools with coil(s) oriented in the directions other than the tool axis. In one embodiment, the system is constructed by the azimuthal resistivity tool, a tilted calibration loop made of conductive wire; an external resistor; and an external inductor. Some other method embodiment comprises an azimuthal resistivity tool, a semicircular conductive wire connected with a conductivity rectangular wire, and the external resistor and inductor.
    Type: Application
    Filed: April 27, 2018
    Publication date: October 31, 2019
    Inventors: Hu Li, John Qiang Zhou