Patents by Inventor Grunde RØNHOLT

Grunde RØNHOLT 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).

  • Patent number: 10359526
    Abstract: Amplitude-versus-angle analysis for quantitative interpretation can include creation of a plurality of angle gathers from imaging a subsurface location with multiples in a near-offset range and imaging primaries outside the near-offset range and application of an amplitude-versus-angle analysis to the plurality of angle gathers to produce a quantitative interpretation pertaining to the subsurface location.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: July 23, 2019
    Assignee: PGS Geophysical AS
    Inventors: Grunde Rønholt, Nizar Chemingui, Alejandro Antonio Valenciano Mavilio, Shaoping Lu
  • Patent number: 10261203
    Abstract: A horizontal component of marine seismic survey data from an ocean bottom seismic survey can be migrated using a primary wave velocity model. The horizontal component can comprise a shear converted wave. An image of a subsurface location can based on the migration can be produced. Migrating the horizontal component can comprise wave-equation migrating the horizontal component, where the horizontal component is input as both a source wavefield and a receiver wavefield.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: April 16, 2019
    Assignee: PGS Geophysical AS
    Inventors: Julien Oukili, Grunde Rønholt
  • Publication number: 20170371054
    Abstract: A horizontal component of marine seismic survey data from an ocean bottom seismic survey can be migrated using a primary wave velocity model. The horizontal component can comprise a shear converted wave. An image of a subsurface location can based on the migration can be produced. Migrating the horizontal component can comprise wave-equation migrating the horizontal component, where the horizontal component is input as both a source wavefield and a receiver wavefield.
    Type: Application
    Filed: February 9, 2017
    Publication date: December 28, 2017
    Applicant: PGS Geophysical AS
    Inventors: Julien Oukili, Grunde Rønholt
  • Patent number: 9651695
    Abstract: One embodiment relates to a technological process for identifying a potential subsurface structure below a body of water. Three-dimensional seismic sensor data that includes at least two measured components is obtained. Up-going and down-going wavefields comprising multiples wavefields are constructed from the three-dimensional seismic sensor data by applying wavefield separation. The up-going and down-going wavefields are extrapolated to a reflector surface below a water bottom. An imaging condition is applied at the reflector surface to generate images that include information from the multiples wavefields. Angle gathers are constructed, where each angle gather is constructed by gathering the images generated using the multiples wavefields for a range of illumination angles. Other embodiments, aspects and features are also disclosed.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: May 16, 2017
    Assignee: PGS Geophysical AS
    Inventors: Shaoping Lu, Norman Daniel Whitmore, Jr., Alejandro Antonio Valenciano Mavilio, Nizar Chemingui, Andrew Long, Grunde Rønholt
  • Publication number: 20160245941
    Abstract: Amplitude-versus-angle analysis for quantitative interpretation can include creation of a plurality of angle gathers from imaging a subsurface location with multiples in a near-offset range and imaging primaries outside the near-offset range and application of an amplitude-versus-angle analysis to the plurality of angle gathers to produce a quantitative interpretation pertaining to the subsurface location.
    Type: Application
    Filed: February 2, 2016
    Publication date: August 25, 2016
    Applicant: PGS Geophysical AS
    Inventors: Grunde Rønholt, Nizar Chemingui, Alejandro Antonio Valenciano Mavilio, Shaoping Lu
  • Publication number: 20150078124
    Abstract: One embodiment relates to a technological process for identifying a potential subsurface structure below a body of water. Three-dimensional seismic sensor data that includes at least two measured components is obtained. Up-going and down-going wavefields comprising multiples wavefields are constructed from the three-dimensional seismic sensor data by applying wavefield separation. The up-going and down-going wavefields are extrapolated to a reflector surface below a water bottom. An imaging condition is applied at the reflector surface to generate images that include information from the multiples wavefields. Angle gathers are constructed, where each angle gather is constructed by gathering the images generated using the multiples wavefields for a range of illumination angles. Other embodiments, aspects and features are also disclosed.
    Type: Application
    Filed: July 22, 2014
    Publication date: March 19, 2015
    Inventors: Shaoping LU, Norman Daniel WHITMORE, JR., Alejandro Antonio Valenciano MAVILIO, Nizar CHEMINGUI, Andrew LONG, Grunde RØNHOLT