Patents by Inventor Jarrod David Chapman

Jarrod David Chapman 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).

  • Inertial compensation for a quill oscillator
    Patent number: 11767749
    Abstract: A drilling system configured to reduce friction during slide drilling. The drilling system has a drill string comprising a fluid-driven drill stage such as a mud motor; a variable frequency drive configured to oscillate the drill string via a quill and a sensor array. The sensor array measures the torque applied to the quill and the angular position of the quill. A controller is used to control the variable frequency drive based on the determined applied torque and quill angular position to meet predetermined oscillation turn-around criteria and to reduce the time to reduce the angular velocity of the quill from a maximum rotational speed to zero in an oscillation cycle.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: September 26, 2023
    Assignee: Ensign Drilling Inc
    Inventors: Jarrod David Chapman, Chiranjit Saha, Sean Timothy Halloran
  • Inertial Compensation for a Quill Oscillator
    Publication number: 20210324725
    Abstract: A drilling system configured to reduce friction during slide drilling. The drilling system has a drill string comprising a fluid-driven drill stage such as a mud motor; a variable frequency drive configured to oscillate the drill string via a quill and a sensor array. The sensor array measures the torque applied to the quill and the angular position of the quill. A controller is used to control the variable frequency drive based on the determined applied torque and quill angular position to meet predetermined oscillation turn-around criteria and to reduce the time to reduce the angular velocity of the quill from a maximum rotational speed to zero in an oscillation cycle.
    Type: Application
    Filed: April 13, 2021
    Publication date: October 21, 2021
    Inventors: Jarrod David Chapman, Chiranjit Saha, Sean Timothy Halloran