Patents by Inventor Johan Robertsson
Johan Robertsson 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).
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Patent number: 11346969Abstract: 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: GrantFiled: September 27, 2019Date of Patent: May 31, 2022Assignee: APPARITION GEOSERVICES GMBHInventors: Fredrik Andersson, Dirk-Jan Van Manen, Kurt Eggenberger, Johan Robertsson
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Patent number: 11280925Abstract: 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: GrantFiled: May 9, 2019Date of Patent: March 22, 2022Assignee: APPARITION GEOSERVICES GMBHInventors: Johan Robertsson, Kurt Eggenberger, Dirk-Jan Van Manen, Fredrik Andersson
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Patent number: 11243319Abstract: Methods for separating the unknown contributions of two or more sources from a commonly acquired set of wavefield signals based on varying parameters at the firing time, location and/or depth of the individual sources in a lateral 2D plane.Type: GrantFiled: September 3, 2020Date of Patent: February 8, 2022Assignee: Apparition Geoservices GmbHInventors: Fredrik Andersson, Johan Robertsson
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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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Publication number: 20200400846Abstract: Methods for separating the unknown contributions of two or more sources from a commonly acquired set of wavefield signals based on varying parameters at the firing time, location and/or depth of the individual sources in a lateral 2D plane.Type: ApplicationFiled: September 3, 2020Publication date: December 24, 2020Applicant: Apparition Geoservices GmbHInventors: Fredrik ANDERSSON, Johan Robertsson
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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: 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: 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: 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
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Patent number: 9316754Abstract: A seismic acquisition system includes a distributed optical sensor (having an optical fiber) and an interrogation subsystem configured to generate a light signal to emit into the optical fiber. The interrogation subsystem receives, from the distributed optical sensor, backscattered light responsive to the emitted light signal, wherein the backscattered light is affected by one or both of seismic signals reflected from a subterranean structure and noise. Output data corresponding to the backscattered light is provided to a processing subsystem to determine a characteristic of the subterranean structure.Type: GrantFiled: November 21, 2014Date of Patent: April 19, 2016Assignee: Schlumberger Technology CorporationInventors: Ed Kragh, Everhard Muyzert, Johan Robertsson, Douglas E. Miller, Arthur H. Hartog
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Publication number: 20150076334Abstract: A seismic acquisition system includes a distributed optical sensor (having an optical fiber) and an interrogation subsystem configured to generate a light signal to emit into the optical fiber. The interrogation subsystem receives, from the distributed optical sensor, backscattered light responsive to the emitted light signal, wherein the backscattered light is affected by one or both of seismic signals reflected from a subterranean structure and noise. Output data corresponding to the backscattered light is provided to a processing subsystem to determine a characteristic of the subterranean structure.Type: ApplicationFiled: November 21, 2014Publication date: March 19, 2015Inventors: Ed Kragh, Everhard Muyzert, Johan Robertsson, Douglas E. Miller, Arthur H. Hartog
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Patent number: 8924158Abstract: A seismic acquisition system includes a distributed optical sensor (having an optical fiber) and an interrogation subsystem configured to generate a light signal to emit into the optical fiber. The interrogation subsystem receives, from the distributed optical sensor, backscattered light responsive to the emitted light signal, wherein the backscattered light is affected by one or both of seismic signals reflected from a subterranean structure and noise. Output data corresponding to the backscattered light is provided to a processing subsystem to determine a characteristic of the subterranean structure.Type: GrantFiled: August 9, 2010Date of Patent: December 30, 2014Assignee: Schlumberger Technology CorporationInventors: Ed Kragh, Everhard Muyzert, Johan Robertsson, Douglas E. Miller, Arthur H. Hartog
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Publication number: 20140362663Abstract: Methods and apparatuses for acquiring marine seismic data to generate images or determine properties of an interior section of the Earth using vessels ing simultaneous sources. The time required to acquire a seismic survey is decreased by increasing the speed of the source towing vessel (or decreasing the data sampling density, or increased sampling interval) using multiple simultaneous sources. After separation with simultaneous source technique and combination of separated datasets, seismic data with designed data sampling density or better are acquired.Type: ApplicationFiled: January 14, 2013Publication date: December 11, 2014Inventors: Robert Hughes Jones, David Fraser Halliday, Johan Robertsson
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Publication number: 20120275264Abstract: A technique includes towing a spread of at least one streamer to acquire seismic data in response to energy produced by a seismic source. The technique includes towing the seismic source at least 100 meters behind a front end of the spread to configure the spread to acquire a split spread gather record.Type: ApplicationFiled: July 2, 2012Publication date: November 1, 2012Applicant: WESTERNGECO L.L.C.Inventors: CLEMENT KOSTOV, MARTIN MUSIL, JOHAN ROBERTSSON, ED KRAGH