Patents Assigned to SEISMIC APPARITION GmbH
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Patent number: 11029432Abstract: Methods are described for separating the unknown contributions of two or more sources from a commonly acquired aliased wave field signals including the determination of models with reduced support in the frequency-wavenumber domain which reconstruct the wave fields of independently-activated sources after a coordinate-transform of the acquired wave field data and/or in a coordinate-transformed domain.Type: GrantFiled: August 31, 2018Date of Patent: June 8, 2021Assignee: SEISMIC APPARITION GmbHInventors: Dirk-Jan Van Manen, Fredrik Andersson, Johan Robertsson, Kurt Eggenberger
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Patent number: 11002870Abstract: A method is described for removing the surface ghost from and/or separating wave field data and/or for estimating redatuming operators of the wave field data by effective use of a transform that that relies on the non-uniform distribution of distances with respect to a reference surface or of tuned-source radiation directions of sources and or the non-uniform distribution of receivers with respect to a reference surface to partition or map the wave field from at least two different cones in the transformed domain and using the contribution of sources and or receivers inside at least one of the at least two different cones to estimate a first wave field of interest, a second separated or ghost wave field and/or redatuming operator.Type: GrantFiled: August 31, 2018Date of Patent: May 11, 2021Assignee: SEISMIC APPARITION GmbHInventors: Johan Robertsson, Dirk-Jan Van Manen, Fredrik Andersson, Kurt Eggenberger
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Patent number: 10690793Abstract: Methods are described for separating the unknown contributions of two or more sources from a commonly acquired set of wavefield signals representing a wavefield where the sources traverse general, related activation lines or grids and are synchronously activated while varying at least one parameter between the sources.Type: GrantFiled: November 9, 2018Date of Patent: June 23, 2020Assignee: SEISMIC APPARITION GmbHInventors: Dirk-Jan Van Manen, Fredrik Andersson, Johan Robertsson, Kurt Eggenberger
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Publication number: 20200174147Abstract: Methods are described for separating the unknown contributions of two or more sources from a commonly acquired set of wavefield signals representing a wavefield where the sources are laterally located relatively close to each other and fire relatively close in time, and where the contributions from different sources are separated using different source encoding techniques in different parts of a frequency band of interest.Type: ApplicationFiled: February 7, 2020Publication date: June 4, 2020Applicant: SEISMIC APPARITION GmbHInventors: Johan ROBERTSSON, Robin Walker, Fredrik Andersson, Dirk-Jan Van Manen, Kurt Eggenberger
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Publication number: 20200025961Abstract: A method for separating the unknown contributions of two or more sources from a commonly acquired set of wavefield signals representing a wavefield where the contributions from different sources are both encoded by means of the principles of signal apparition and as well as by means of different source encoding techniques.Type: ApplicationFiled: May 9, 2019Publication date: January 23, 2020Applicant: SEISMIC APPARITION GmbHInventors: Johan ROBERTSSON, Kurt EGGENBERGER, Dirk-Jan VAN MANEN, Fredrik ANDERSSON
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Publication number: 20200025959Abstract: A simultaneous sources seismic acquisition method is described that introduces notch diversity to improve separating the unknown contributions of one or more sources from a commonly acquired set of wavefield signals while still allowing for optimal reconstruction properties in certain diamond-shaped regions. In particular, notch diversity is obtained by heteroscale encoding.Type: ApplicationFiled: September 27, 2019Publication date: January 23, 2020Applicant: SEISMIC APPARITION GmbHInventors: Fredrik ANDERSSON, Dirk-Jan VAN MANEN, Kurt EGGENBERGER, Johan ROBERTSSON
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Publication number: 20190331816Abstract: A method is disclosed for separating the unknown contributions of one or more sources from a commonly acquired set of wavefield signals using analytic properties of complex and hypercomplex representations. In particular, the methods are designed to treat the case where the wavefield consists of seismic sources and of sets of aliased recorded and/or aliased processed seismic signals.Type: ApplicationFiled: July 11, 2019Publication date: October 31, 2019Applicant: SEISMIC APPARITION GmbHInventors: Fredrik Andersson, Dirk-Jan Van Manen, Johan Robertsson, Jens Wittsten, Kurt Eggenberger
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Publication number: 20190079205Abstract: Methods are described for separating the unknown contributions of two or more sources from a commonly acquired set of wavefield signals representing a wavefield where the sources traverse general, related activation lines or grids and are synchronously activated while varying at least one parameter between the sources.Type: ApplicationFiled: November 9, 2018Publication date: March 14, 2019Applicant: SEISMIC APPARITION GmbHInventors: Dirk-Jan Van Manen, Fredrik Andersson, Johan Robertsson, Kurt Eggenberger
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Publication number: 20190072686Abstract: Methods are described for separating the unknown contributions of two or more sources from a commonly acquired aliased wave field signals including the determination of models with reduced support in the frequency-wavenumber domain which reconstruct the wave fields of independently-activated sources after a coordinate-transform of the acquired wave field data and/or in a coordinate-transformed domain.Type: ApplicationFiled: August 31, 2018Publication date: March 7, 2019Applicant: SEISMIC APPARITION GmbHInventors: Dirk-Jan VAN MANEN, Fredrik ANDERSSON, Johan ROBERTSSON, Kurt EGGENBERGER
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Publication number: 20190049609Abstract: A method and apparatus for separating the unknown contributions of two or more sources from a commonly acquired wave field including the determination of a wavenumber dependent model which reconstructs the wave field of the sources independently below a frequency set by the slowest physical propagation velocity, and applying an inversion based on the model to the commonly acquired wave field to separate the contributions.Type: ApplicationFiled: August 31, 2018Publication date: February 14, 2019Applicant: SEISMIC APPARITION GmbHInventors: Dirk-Jan VAN MANEN, Fredrik ANDERSSON, Johan ROBERTSSON, Kurt EGGENBERGER
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Publication number: 20190018157Abstract: A method is described for removing the surface ghost from and/or separating wave field data and/or for estimating redatuming operators of the wave field data by effective use of a transform that that relies on the non-uniform distribution of distances with respect to a reference surface or of tuned-source radiation directions of sources and or the non-uniform distribution of receivers with respect to a reference surface to partition or map the wave field from at least two different cones in the transformed domain and using the contribution of sources and or receivers inside at least one of the at least two different cones to estimate a first wave field of interest, a second separated or ghost wave field and/or redatuming operator.Type: ApplicationFiled: August 31, 2018Publication date: January 17, 2019Applicant: SEISMIC APPARITION GmbHInventors: Johan ROBERTSSON, Dirk-Jan Van Manen, Fredrik Andersson, Kurt Eggenberger