Patents by Inventor David Arthur Sidney Switzer

David Arthur Sidney Switzer 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).

  • ELECTROMAGNETIC COMMUNICATIONS SYSTEM AND METHOD FOR A DRILLING OPERATION
    Publication number: 20200088026
    Abstract: A wireless communications system for a downhole drilling operation comprises a drill string, surface communications equipment, and a downhole telemetry tool. The surface communications equipment comprises a surface EM communications module with an EM downlink transmitter configured to transmit through at least a portion of the drill string an EM downlink transmission at a frequency between 0.5 Hz and 180 kHz. The downhole telemetry tool is mountable to a drill string and has a downhole electromagnetic (EM) communications unit with an EM downlink receiver configured to receive the EM downlink transmission. The downhole EM communications unit can further comprise an EM uplink transmitter configured to transmit an EM uplink transmission at a frequency GO between 0.5 Hz and 180 kHz, in which case the surface EM communications module further comprises an EM uplink receiver configured to receive the EM uplink transmission.
    Type: Application
    Filed: February 26, 2018
    Publication date: March 19, 2020
    Inventors: Barry Daniel Buternowsky, Kurtis Kenneth Lee West, Jili Liu, Aaron William Logan, Mahdi Yousefi Koopaei, Vincent Raymond Martin, Ali Ahmed Ali Massoud, David Arthur Sidney Switzer, Mingdong Xu, Mojtaba Kazemi Miraki