Patents by Inventor Francis Drossaert

Francis Drossaert 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).

  • Methods and systems to operate marine sources to avoid air in water effects
    Patent number: 10234578
    Abstract: In order to avoid complicated and unpredictable effects on the wavefields emitted by air guns activated at different times, methods and systems of the current disclosure are directed to computationally designing a sequence for activating subsets of air guns in a time distributed manner that minimizes the effects of air in the water surrounding the source. The sequence may be used with discrete and continuously recorded marine surveys.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: March 19, 2019
    Assignee: PGS Geophysical AS
    Inventors: Gregg Parkes, Stian Hegna, Francis Drossaert
  • Time-efficient tests to detect air gun faults
    Patent number: 9482766
    Abstract: Techniques are disclosed relating to testing of seismic air guns, for example via bubble tests. According to some embodiments of these techniques, a firing sequence for testing the air guns may be determined that reduces the amount of interaction between firings. Further, firing time delays may also be determined in order to further reduce the interactions. Accordingly, a test of an array of air guns may be completed relatively quickly.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: November 1, 2016
    Assignee: PGS Geophysical AS
    Inventors: Gregg Parkes, Stian Hegna, Francis Drossaert
  • METHODS AND SYSTEMS TO OPERATE MARINE SOURCES TO AVOID AIR IN WATER EFFECTS
    Publication number: 20160047922
    Abstract: In order to avoid complicated and unpredictable effects on the wavefields emitted by air guns activated at different times, methods and systems of the current disclosure are directed to computationally designing a sequence for activating subsets of air guns in a time distributed manner that minimizes the effects of air in the water surrounding the source. The sequence may be used with discrete and continuously recorded marine surveys.
    Type: Application
    Filed: December 30, 2014
    Publication date: February 18, 2016
    Applicant: PGS Geophysical AS
    Inventors: Gregg Parkes, Stian Hegna, Francis Drossaert
  • TIME-EFFICIENT TESTS TO DETECT AIR GUN FAULTS
    Publication number: 20140340983
    Abstract: Techniques are disclosed relating to testing of seismic air guns, for example via bubble tests. According to some embodiments of these techniques, a firing sequence for testing the air guns may be determined that reduces the amount of interaction between firings. Further, firing time delays may also be determined in order to further reduce the interactions. Accordingly, a test of an array of air guns may be completed relatively quickly.
    Type: Application
    Filed: November 8, 2013
    Publication date: November 20, 2014
    Applicant: PGS Geophysical AS
    Inventors: Gregg Parkes, Stian Hegna, Francis Drossaert