Patents by Inventor Paul N. Childs

Paul N. Childs 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).

  • Waveform inversion by multiple shot-encoding for non-fixed spread geometries
    Patent number: 9702994
    Abstract: Seismic data processing methods and computing systems are presented. In one embodiment, a method is disclosed that includes simulating a set of simulated seismic data from a set of acquired seismic data; separating the simulated seismic data into a plurality of data sets, wherein one set of data is matched in the acquired seismic data and one set of data is unmatched in the acquired seismic data; conforming the simulated seismic data and the acquired seismic data to one another using separated, simulated seismic data unmatched by a counterpart in the acquired seismic data from the acquired seismic data; and performing an inversion between the acquired seismic data and the separated, simulated seismic data after they are conformed to one another.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: July 11, 2017
    Assignee: WESTERNGECO L.L.C.
    Inventors: James E. Rickett, Paul N. Childs
  • WAVE EQUATION PROCESSING
    Publication number: 20150272506
    Abstract: A volume of data is partitioned into a plurality of domains. A multilevel preconditioner is applied in the plurality of domains to provide iterative approximate solutions for the domains, which are coupled with boundary conditions. The approximate solutions for the domains are stitched together to provide a solution for a wave equation which can be used in full waveform inversion.
    Type: Application
    Filed: October 9, 2013
    Publication date: October 1, 2015
    Inventors: Paul N. Childs, Ivan Graham, James Douglas Shanks, Vladimir L. Druskin, Leonid Knizhzerman
  • Determining an output representing a target structure based on encoded source and receiver data
    Patent number: 9091784
    Abstract: A source wavefield is computed from encoded source data calculated by performing encoding of source wavelets with noise. A receiver wavefield is computed from encoded receiver data calculated by encoding of measured receiver data with the noise. An output representing a target structure is determined based on the source wavefield and the receiver wavefield.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: July 28, 2015
    Assignee: WesternGeco L.L.C.
    Inventors: Can Evren Yarman, Paul N. Childs, Eugene William Starr
  • Inversion using a filtering operator
    Patent number: 9075160
    Abstract: To perform inversion to produce a model of a structure, a filtering operator based at least on an angle between a propagating direction of a source wavefield and a propagating direction of a back-propagated receiver wavefield is computed. The filtering operator is used in performing the inversion to produce the model of the structure.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: July 7, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Paul N. Childs, Robin Fletcher, Xiang Du, Eugene William Starr
  • DETERMINING AN OUTPUT REPRESENTING A TARGET STRUCTURE BASED ON ENCODED SOURCE AND RECEIVER DATA
    Publication number: 20130338922
    Abstract: A source wavefield is computed from encoded source data calculated by performing encoding of source wavelets with noise. A receiver wavefield is computed from encoded receiver data calculated by encoding of measured receiver data with the noise. An output representing a target structure is determined based on the source wavefield and the receiver wavefield.
    Type: Application
    Filed: June 15, 2012
    Publication date: December 19, 2013
    Applicant: WESTERNGECO L.L.C.
    Inventors: CAN EVREN YARMAN, PAUL N. CHILDS, EUGENE WILLIAM STARR
  • INVERSION USING A FILTERING OPERATOR
    Publication number: 20130294196
    Abstract: To perform inversion to produce a model of a structure, a filtering operator based at least on an angle between a propagating direction of a source wavefield and a propagating direction of a back-propagated receiver wavefield is computed. The filtering operator is used in performing the inversion to produce the model of the structure.
    Type: Application
    Filed: May 3, 2012
    Publication date: November 7, 2013
    Applicant: WESTERNGECO L.L.C.
    Inventors: PAUL N. CHILDS, ROBIN FLETCHER, XIANG DU, EUGENE WILLIAM STARR
  • WAVEFORM INVERSION BY MULTIPLE SHOT-ENCODING FOR NON-FIXED SPREAD GEOMETRIES
    Publication number: 20120215506
    Abstract: Seismic data processing methods and computing systems are presented. In one embodiment, a method is disclosed that includes simulating a set of simulated seismic data from a set of acquired seismic data; separating the simulated seismic data into a plurality of data sets, wherein one set of data is matched in the acquired seismic data and one set of data is unmatched in the acquired seismic data; conforming the simulated seismic data and the acquired seismic data to one another using separated, simulated seismic data unmatched by a counterpart in the acquired seismic data from the acquired seismic data; and performing an inversion between the acquired seismic data and the separated, simulated seismic data after they are conformed to one another.
    Type: Application
    Filed: February 10, 2012
    Publication date: August 23, 2012
    Inventors: James E. Rickett, Paul N. Childs