Patents by Inventor Justo Elias Matheus Valero

Justo Elias Matheus Valero 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).

  • Controlling release of torsional energy from a drill string
    Patent number: 11525321
    Abstract: Apparatus and methods for controlling release of torsional energy from a drill string having a lower portion that is stuck against a subterranean formation and a top end rotated by a top drive. The method may include decreasing a rotational speed set-point of the top drive, decreasing a torque set-point of the top drive, and/or decreasing flow rate of drilling mud being pumped downhole via the drill string, thereby decreasing torque output by a mud motor rotating a drill bit. The method may further include lifting the drill string to free the drill string. Decreasing the torque set-point of the top drive may comprise decreasing the torque set-point of the top drive to a minimum torque level that the top drive can output. Decreasing the rotational speed set-point of the top drive may comprise decreasing the rotational speed set-point of the top drive to zero.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: December 13, 2022
    Assignee: Schlumberger Technology Corporation
    Inventors: Justo Elias Matheus Valero, Jan Alvaer, Juan-Carlos Yepez
  • Controlling Release of Torsional Energy from a Drill String
    Publication number: 20220127923
    Abstract: Apparatus and methods for controlling release of torsional energy from a drill string having a lower portion that is stuck against a subterranean formation and a top end rotated by a top drive. The method may include decreasing a rotational speed set-point of the top drive, decreasing a torque set-point of the top drive, and/or decreasing flow rate of drilling mud being pumped downhole via the drill string, thereby decreasing torque output by a mud motor rotating a drill bit. The method may further include lifting the drill string to free the drill string. Decreasing the torque set-point of the top drive may comprise decreasing the torque set-point of the top drive to a minimum torque level that the top drive can output. Decreasing the rotational speed set-point of the top drive may comprise decreasing the rotational speed set-point of the top drive to zero.
    Type: Application
    Filed: October 23, 2020
    Publication date: April 28, 2022
    Inventors: Justo Elias Matheus Valero, Jan Alvaer, Juan-Carlos Yepez