Patents by Inventor Andrew John Hayman

Andrew John Hayman 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).

  • Coherent noise estimation and reduction for acoustic downhole measurements
    Patent number: 10416329
    Abstract: A system includes an acoustic logging tool including a transducer configured to: emit a first acoustic pulse in a first direction toward a first acoustic surface; measure a first acoustic signal, wherein the first acoustic signal includes a coherent noise component and a first echo component, wherein the first echo component is due at least in part to an interaction of the first acoustic pulse with the first acoustic surface; emit a second acoustic pulse in a second direction, wherein the second direction is at least partly directed away from the first acoustic surface; and measure a second acoustic signal, wherein the second acoustic signal includes substantially only the coherent noise component. The system also includes a data processing system that includes a processor configured to remove the measurement of the second acoustic signal from the measurement of the first acoustic signal to reduce coherent noise.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: September 17, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Andrew John Hayman, Thomas Barrou
  • COHERENT NOISE ESTIMATION AND REDUCTION FOR ACOUSTIC DOWNHOLE MEASUREMENTS
    Publication number: 20170168183
    Abstract: A system includes an acoustic logging tool including a transducer configured to: emit a first acoustic pulse in a first direction toward a first acoustic surface; measure a first acoustic signal, wherein the first acoustic signal includes a coherent noise component and a first echo component, wherein the first echo component is due at least in part to an interaction of the first acoustic pulse with the first acoustic surface; emit a second acoustic pulse in a second direction, wherein the second direction is at least partly directed away from the first acoustic surface; and measure a second acoustic signal, wherein the second acoustic signal includes substantially only the coherent noise component. The system also includes a data processing system that includes a processor configured to remove the measurement of the second acoustic signal from the measurement of the first acoustic signal to reduce coherent noise.
    Type: Application
    Filed: October 28, 2016
    Publication date: June 15, 2017
    Inventors: Andrew John Hayman, Thomas Barrou