Patents by Inventor Shaoping Lu

Shaoping Lu 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: 10401517
    Abstract: Crosstalk attenuation for seismic imaging can include creation of a seismic image based on seismic data including multiples. The seismic image can include causal crosstalk and anti-causal crosstalk. Causal crosstalk and anti-causal crosstalk can be predicted based on the seismic data. The predicted causal crosstalk and the predicted anti-causal crosstalk can be attenuated from the seismic image.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: September 3, 2019
    Assignee: PGS Geophysical AS
    Inventors: Shaoping Lu, Norman Daniel Whitmore, Jr., Alejandro Antonio Valenciano Mavilio
  • Patent number: 10393901
    Abstract: Methods and systems of generating seismic images from primaries and multiples are described. Methods separate pressure data into up-going pressure data and down-going pressure data from pressure data and vertical velocity data. Irregularly spaced receiver coordinates of the down-going and up-going pressure data are regularized to grid points of a migration grid and interpolation is used to fill in down-going and up-going pressure data at grid points of the migration grid. A seismic image is calculated at grid points of the migration grid based on the interpolated and regularized down-going pressure data and the interpolated and regularized up-going pressure data. The seismic images are high-resolution, have lower signal-to-noise ratio than seismic images generated by other methods, and have reduced acquisition artifacts and crosstalk effects.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: August 27, 2019
    Assignee: PGS Geophysical AS
    Inventors: Shaoping Lu, Norman Daniel Whitmore, Jr., Alejandro Antonio Valenciano Mavilio, Nizar Chemingui
  • Publication number: 20190257967
    Abstract: Inversion for marine seismic imaging of a full reflected wavefield can include generating an image of a subsurface formation by full wavefield migrating a recorded seismic wavefield and generating numerically modeled data using the image. A mismatch between the numerically modeled data and the seismic wavefield can be determined. Responsive to determining that the mismatch exceeds an inversion match threshold, the image can be updated using the mismatch between the numerically modeled data and the seismic wavefield.
    Type: Application
    Filed: February 21, 2019
    Publication date: August 22, 2019
    Applicant: PGS Geophysical AS
    Inventors: Shaoping Lu, Faqi Liu, Nizar Chemingui
  • 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
  • Publication number: 20190187313
    Abstract: This disclosure describes processes and systems for generating a seismic image of a subterranean formation from recorded seismic data gathers obtained in a marine seismic survey of the subterranean formation. The seismic data comprises recorded pressure and vertical velocity wavefields that are used to separate the recorded pressure wavefield into upgoing and downgoing pressure wavefields. A seismic image is computed from the subterranean formation based on a product of the downgoing pressure wavefield and a migration operator applied to the upgoing pressure wavefield. The downgoing pressure wavefield is a boundary source wavefield and the upgoing pressure wavefield is boundary receiver wavefield of the migration operator. The seismic image is iteratively updated by computing a residual seismic image based on the upgoing pressure wavefield and adding the residual seismic image to the seismic image.
    Type: Application
    Filed: September 21, 2018
    Publication date: June 20, 2019
    Inventors: Nizar Chemingui, Alejandro A. Valenciano Mavilio, Faqi Liu, Shaoping Lu
  • Publication number: 20180120236
    Abstract: A natural jewelry authenticity identification method comprises: scanning the whole appearance of each jewel by three-dimensional microscopic scanning and completely recording appearance characteristics of the jewel; a three-dimensional imaging technique is used to generate a three-dimensional entity image of the jewel, and a digest algorithm is used to compress three-dimensional entity image information about the jewel into a unique digest code, wherein the three-dimensional entity image and the digest code are published as publishable archive information; and if a receiver is a dealer, the same method is adopted to generate a digest code of the natural jewel, and the digest code is compared with the published digest code; and if the receiver is an individual buyer, after the natural jewel is received, the actual object is magnified and compared with the published three-dimensional entity image, and if the comparison is matched, the natural jewel is identified as authentic.
    Type: Application
    Filed: December 27, 2017
    Publication date: May 3, 2018
    Inventors: Shaoping Lu, Chen Xu, Zhenyu Di, Feipeng Li
  • Patent number: 9689999
    Abstract: Techniques are disclosed relating to geophysical analysis. In one embodiment, a method includes receiving seismic data for a geophysical formation recorded during a seismic survey using one or more seabed sensors and one or more sources. In this embodiment, the method includes determining a seismic gather for a location in the geophysical formation, modifying the seismic gather by interchanging source-receiver definitions for the seismic gather, and imaging the location using the modified gather. In this embodiment, the imaging uses higher-order reflections recorded in the seismic gather. In some embodiments, the method includes separating up-going and down-going wavefields and separately imaging using the up-going wavefield and the down-going wavefield.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: June 27, 2017
    Assignee: PGS Geophysical AS
    Inventors: Didier B. P. Lecerf, Nizar Chemingui, Alejandro A. Valenciano Mavilio, Shaoping Lu
  • 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: 20170059730
    Abstract: Methods and systems of generating seismic images from primaries and multiples are described. Methods separate pressure data into up-going pressure data and down-going pressure data from pressure data and vertical velocity data. Irregularly spaced receiver coordinates of the down-going and up-going pressure data are regularized to grid points of a migration grid and interpolation is used to fill in down-going and up-going pressure data at grid points of the migration grid. A seismic image is calculated at grid points of the migration grid based on the interpolated and regularized down-going pressure data and the interpolated and regularized up-going pressure data. The seismic images are high-resolution, have lower signal-to-noise ratio than seismic images generated by other methods, and have reduced acquisition artifacts and crosstalk effects.
    Type: Application
    Filed: August 16, 2016
    Publication date: March 2, 2017
    Applicant: PGS Geophysical AS
    Inventors: Shaoping Lu, Norman Daniel Whitmore, JR., Alejandro Antonio Valenciano Mavilio, Nizar Chemingui
  • Patent number: 9453930
    Abstract: This disclosure presents computational systems and methods for obtaining high-resolution, three-dimensional seismic images of a region of a subterranean formation using separated up-going and down-going wavefields that include primary and multiple reflections obtained by processing dual-sensor towed streamer seismic data. The inclusion of multiple reflections reduces acquisition footprints in migration of the seismic data. The computational systems and methods produce high-resolution images in a region of a subterranean formation that lies below a body of water. The methods and systems employ a digitally encoded wavefields constructed from a discrete sampling of a two-dimensional slice of a three-dimensional wavefield and stored in one or more tangible, physical data-storage devices.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: September 27, 2016
    Assignee: PGS GEOPHYSICAL AS
    Inventors: Norman Daniel Whitmore, Jr., Shaoping Lu
  • 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: 20160238726
    Abstract: Crosstalk attenuation for seismic imaging can include creation of a seismic image based on seismic data including multiples. The seismic image can include causal crosstalk and anti-causal crosstalk. Causal crosstalk and anti-causal crosstalk can be predicted based on the seismic data. The predicted causal crosstalk and the predicted anti-causal crosstalk can be attenuated from the seismic image.
    Type: Application
    Filed: January 8, 2016
    Publication date: August 18, 2016
    Applicant: PGS Geophysical AS
    Inventors: Shaoping Lu, Norman Daniel Whitmore, JR., Alejandro Antonio Valenciano Mavilio
  • Publication number: 20150362611
    Abstract: Techniques are disclosed relating to geophysical analysis. In one embodiment, a method includes receiving seismic data for a geophysical formation recorded during a seismic survey using one or more seabed sensors and one or more sources. In this embodiment, the method includes determining a seismic gather for a location in the geophysical formation, modifying the seismic gather by interchanging source-receiver definitions for the seismic gather, and imaging the location using the modified gather. In this embodiment, the imaging uses higher-order reflections recorded in the seismic gather. In some embodiments, the method includes separating up-going and down-going wavefields and separately imaging using the up-going wavefield and the down-going wavefield.
    Type: Application
    Filed: November 21, 2014
    Publication date: December 17, 2015
    Inventors: Didier B. P. Lecerf, Nizar Chemingui, Alejandro A. 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
  • Publication number: 20140119157
    Abstract: This disclosure presents computational systems and methods for obtaining high-resolution, three-dimensional seismic images of a region of a subterranean formation using separated up-going and down-going wavefields that include primary and multiple reflections obtained by processing dual-sensor towed streamer seismic data. The inclusion of multiple reflections reduces acquisition footprints in migration of the seismic data. The computational systems and methods produce high-resolution images in a region of a subterranean formation that lies below a body of water. The methods and systems employ a digitally encoded wavefields constructed from a discrete sampling of a two-dimensional slice of a three-dimensional wavefield and stored in one or more tangible, physical data-storage devices.
    Type: Application
    Filed: October 2, 2013
    Publication date: May 1, 2014
    Applicant: PGS Geophyscial AS
    Inventors: Norman Daniel Whitmore, JR., Shaoping Lu
  • Patent number: 7542489
    Abstract: A method for effective injection seeding is based on continuous wavelength sweeping for matching the injected seeds with one or more longitudinal mode(s) of the slave oscillator in every pump pulse. This is achieved through rapidly varying laser drive current resulted from RF modulation. Depending on the modulation parameters, the seed may be operated at quasi-CW or pulsed mode, with a narrow or broad bandwidth, for injection seeding of single longitudinal mode or multimode. The wavelength and bandwidth of the laser output can be tuned according to the needs. From pulse to pulse, the master-slave resonance may occur at different wavelengths upon cavity length fluctuations. Cavity length control via complicated feedback devices and phase locking schemes are consequently not required.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: June 2, 2009
    Assignee: Pavilion Integration Corporation
    Inventors: Ningyi Luo, Sheng-Bai Zhu, Minzheng Wo, Shaoping Lu
  • Patent number: 7535937
    Abstract: A method for producing low-noise laser output at various wavelengths and/or in various operation modes in a monolithic microchip laser comprises schemes of generating two fundamental beams in separate cavities, precise intracavity beam combination based on the walk-off effect in birefringent crystal, and wavelength conversion in nonlinear optical crystals. The fundamental beams are produced from light sources selected upon the desired wavelengths, polarizations, and other features related to the laser output. Low-noise laser devices operated in SLM or with spectra of flat-top or desired bandwidths are constructed according to the method. High-volume fabrication is feasible. Apparatus of compact size and efficient frequency conversion is demonstrated with various configurations including those for generating low-noise 491 nm laser, as a replacement of Argon ion laser.
    Type: Grant
    Filed: March 18, 2006
    Date of Patent: May 19, 2009
    Assignee: Pavilion Integration Corporation
    Inventors: Ningyi Luo, Sheng-Bai Zhu, Shaoping Lu
  • Patent number: 7522651
    Abstract: Solid-state laser(s) pumped by incoherent, monochromatic light from sources such as LED arrays and integrating technologies such as high power LED arrays and solid-state laser materials in conjunction with efficient and uniform absorption of pumping energies through a diffusing pump chamber. The resulting laser(s) are compact, robust, low-cost, and able to produce high power output for practical applications. It may efficiently operate over wide temperature and performance ranges, at CW or pulse modes, even with ultra short pulse width and/or extremely high repetition rates. Our inventive structure(s) is/are highly flexible and applicable to a large group of lasing media including those with very short upper state life times. Advantageously, they may be applied to a plethora of laser systems at wavelengths that have important applications and unavailable to other direct pumping technologies.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: April 21, 2009
    Assignee: Pavilion Integration Corporation
    Inventors: Ningyi Luo, Sheng-Bai Zhu, Shaoping Lu, Feng Zhou
  • Publication number: 20060215714
    Abstract: A method for effective injection seeding is based on continuous wavelength sweeping for matching the injected seeds with one or more longitudinal mode(s) of the slave oscillator in every pump pulse. This is achieved through rapidly varying laser drive current resulted from RF modulation. Depending on the modulation parameters, the seed may be operated at quasi-CW or pulsed mode, with a narrow or broad bandwidth, for injection seeding of single longitudinal mode or multimode. The wavelength and bandwidth of the laser output can be tuned according to the needs. From pulse to pulse, the master-slave resonance may occur at different wavelengths upon cavity length fluctuations. Cavity length control via complicated feedback devices and phase locking schemes are consequently not required.
    Type: Application
    Filed: June 29, 2005
    Publication date: September 28, 2006
    Applicant: Pavilion Integration Corporation
    Inventors: Ningyi Luo, Sheng-Bai Zhu, Minzheng Wo, Shaoping Lu
  • Publication number: 20060209912
    Abstract: A method for producing low-noise laser output at various wavelengths and/or in various operation modes in a monolithic microchip laser comprises schemes of generating two fundamental beams in separate cavities, precise intracavity beam combination based on the walk-off effect in birefringent crystal, and wavelength conversion in nonlinear optical crystals. The fundamental beams are produced from light sources selected upon the desired wavelengths, polarizations, and other features related to the laser output. Low-noise laser devices operated in SLM or with spectra of flat-top or desired bandwidths are constructed according to the method. High-volume fabrication is feasible. Apparatus of compact size and efficient frequency conversion is demonstrated with various configurations including those for generating low-noise 491 nm laser, as a replacement of Argon ion laser.
    Type: Application
    Filed: March 18, 2006
    Publication date: September 21, 2006
    Applicant: Pavilion Integration Corporation
    Inventors: Ningyi Luo, Sheng-Bai Zhu, Shaoping Lu