Patents by Inventor Paolo Terenghi
Paolo Terenghi 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: 10877172Abstract: Prediction and subtraction of multiple diffractions may include transforming previously acquired seismic data from a time-space domain to a transformed domain using a dictionary of compressive basis functions and separating, within the transformed previously acquired seismic data, a first portion and a second portion of the transformed previously acquired seismic data. Prediction and subtraction of multiple diffractions may also include predicting a plurality of multiple diffractions based on the separated first and second portions and adaptively subtracting the predicted multiple diffractions from the previously acquired seismic data. Prediction and subtraction of multiple diffractions may also include inverse transforming a particular seismic data set from the transformed domain to the time-space domain.Type: GrantFiled: April 25, 2019Date of Patent: December 29, 2020Assignee: PGS Geophysical ASInventors: Robertus Franciscus Hegge, Paolo Terenghi, Andreas Klaedtke, Amr Ahmed Mahmoud Ibrahim
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Patent number: 10571587Abstract: Wavefield reconstruction may include reconstructing a wavefield at a location away from a seismic receiver based on seismic data sampled from the seismic receiver, a vector of model coefficients comprising a scattering potential, and at least one of a mapping matrix comprising a dictionary of Green's functions and an operator defined by a combination of a number of functions.Type: GrantFiled: June 24, 2015Date of Patent: February 25, 2020Assignee: PGS Geophysical ASInventor: Paolo Terenghi
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Publication number: 20190250293Abstract: Prediction and subtraction of multiple diffractions may include transforming previously acquired seismic data from a time-space domain to a transformed domain using a dictionary of compressive basis functions and separating, within the transformed previously acquired seismic data, a first portion and a second portion of the transformed previously acquired seismic data. Prediction and subtraction of multiple diffractions may also include predicting a plurality of multiple diffractions based on the separated first and second portions and adaptively subtracting the predicted multiple diffractions from the previously acquired seismic data. Prediction and subtraction of multiple diffractions may also include inverse transforming a particular seismic data set from the transformed domain to the time-space domain.Type: ApplicationFiled: April 25, 2019Publication date: August 15, 2019Applicant: PGS Geophysical ASInventors: Robertus Franciscus Hegge, Paolo Terenghi, Andreas Klaedtke, Amr Ahmed Mahmoud Ibrahim
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Patent number: 10310115Abstract: Prediction and subtraction of multiple diffractions may include transforming previously acquired seismic data from a time-space domain to a transformed domain using a dictionary of compressive basis functions and separating, within the transformed previously acquired seismic data, a first portion and a second portion of the transformed previously acquired seismic data. Prediction and subtraction of multiple diffractions may also include predicting a plurality of multiple diffractions based on the separated first and second portions and adaptively subtracting the predicted multiple diffractions from the previously acquired seismic data. Prediction and subtraction of multiple diffractions may also include inverse transforming a particular seismic data set from the transformed domain to the time-space domain.Type: GrantFiled: June 24, 2016Date of Patent: June 4, 2019Assignee: PGS Geophysical ASInventors: Robertus Franciscus Hegge, Paolo Terenghi, Andreas Klaedtke, Amr Ahmed Mahmoud Ibrahim
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Patent number: 10261207Abstract: A seismic noise mitigation method. The method comprises identifying a wavenumber of a component in a residual wavenumber spectrum having a largest norm based on a preconditioned residual wavenumber spectrum. A contribution to the residual wavenumber spectrum from the identified wavenumber component, is subtracted therefrom. A next residual wavenumber spectrum is based thereon and a relative residual computed based on that. The identifying, subtracting and calculating are repeated until a first to occur termination condition selected from the group consisting of: a current relative residual is less than a threshold residual; a difference between the current relative residual and a smallest relative residual exceeds product of the smallest relative residual and a preselected threshold factor; and a difference between a current number of iterations and a number of iterations corresponding to a currently encountered smallest relative residual encountered exceeds a preselected threshold number of iterations.Type: GrantFiled: December 18, 2015Date of Patent: April 16, 2019Assignee: PGS Geophysical ASInventors: Andreas Klaedtke, Paolo Terenghi, Roald Gunnar van Borselen, Richard Michael Dyer
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Publication number: 20180210104Abstract: Wavefield reconstruction may include reconstructing a wavefield at a location away from a seismic receiver based on seismic data sampled from the seismic receiver, a vector of model coefficients comprising a scattering potential, and at least one of a mapping matrix comprising a dictionary of Green's functions and an operator defined by a combination of a number of functions.Type: ApplicationFiled: June 24, 2015Publication date: July 26, 2018Applicant: PGS Geophysical ASInventor: Paolo Terenghi
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Publication number: 20180017693Abstract: A seismic noise mitigation method. The method comprises identifying a wavenumber of a component in a residual wavenumber spectrum having a largest norm based on a preconditioned residual wavenumber spectrum. A contribution to the residual wavenumber spectrum from the identified wavenumber component, is subtracted therefrom. A next residual wavenumber spectrum is based thereon and a relative residual computed based on that. The identifying, subtracting and calculating are repeated until a first to occur termination condition selected from the group consisting of: a current relative residual is less than a threshold residual; a difference between the current relative residual and a smallest relative residual exceeds product of the smallest relative residual and a preselected threshold factor; and a difference between a current number of iterations and a number of iterations corresponding to a currently encountered smallest relative residual encountered exceeds a preselected threshold number of iterations.Type: ApplicationFiled: December 18, 2015Publication date: January 18, 2018Applicant: PGS Geophysical ASInventors: Andreas Klaedtke, Paolo Terenghi, Roald Gunnar van Borselen, Richard Michael Dyer
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Patent number: 9581711Abstract: A method and apparatus for predicting interbed multiples is described herein. Trace geometries may be generated for one or more desired shot-side traces, one or more desired receiver-side traces, and one or more desired interbed multiple generator traces, for a first target trace. A first set of reflections at the interbed multiple generator layer may be extracted from one or more recorded traces closest to the desired interbed multiple generator traces. A second set of reflections below the interbed multiple generator layer may be extracted from one or more recorded traces closest to the desired shot-side traces. A third set of reflections below the interbed multiple generator layer may be extracted from one or more recorded traces closest to the desired receiver-side traces. The interbed multiples for the first target trace may be estimated based on the first set, the second set, and the third set.Type: GrantFiled: April 23, 2012Date of Patent: February 28, 2017Assignee: WesternGeco L.L.C.Inventors: Paolo Terenghi, William H. Dragoset, Jr., Ian Moore
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Publication number: 20170023686Abstract: Prediction and subtraction of multiple diffractions may include transforming previously acquired seismic data from a time-space domain to a transformed domain using a dictionary of compressive basis functions and separating, within the transformed previously acquired seismic data, a first portion and a second portion of the transformed previously acquired seismic data. Prediction and subtraction of multiple diffractions may also include predicting a plurality of multiple diffractions based on the separated first and second portions and adaptively subtracting the predicted multiple diffractions from the previously acquired seismic data. Prediction and subtraction of multiple diffractions may also include inverse transforming a particular seismic data set from the transformed domain to the time-space domain.Type: ApplicationFiled: June 24, 2016Publication date: January 26, 2017Applicant: PGS Geophysical ASInventors: Robertus Franciscus Hegge, Paolo Terenghi, Andreas Klaedtke, Amr Ahmed Mahmoud Ibrahim
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Publication number: 20120209530Abstract: A method and apparatus for predicting interbed multiples is described herein. Trace geometries may be generated for one or more desired shot-side traces, one or more desired receiver-side traces, and one or more desired interbed multiple generator traces, for a first target trace. A first set of reflections at the interbed multiple generator layer may be extracted from one or more recorded traces closest to the desired interbed multiple generator traces. A second set of reflections below the interbed multiple generator layer may be extracted from one or more recorded traces closest to the desired shot-side traces. A third set of reflections below the interbed multiple generator layer may be extracted from one or more recorded traces closest to the desired receiver-side traces. The interbed multiples for the first target trace may be estimated based on the first set, the second set, and the third set.Type: ApplicationFiled: April 23, 2012Publication date: August 16, 2012Applicant: WESTERNGECO L.L.C.Inventors: PAOLO TERENGHI, WILLIAM H. DRAGOSET, JR., IAN MOORE
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Patent number: 8164978Abstract: A method and apparatus for predicting interbed multiples is described herein. Trace geometries may be generated for one or more desired shot-side traces, one or more desired receiver-side traces, and one or more desired interbed multiple generator traces, for a first target trace. A first set of reflections at the interbed multiple generator layer may be extracted from one or more recorded traces closest to the desired interbed multiple generator traces. A second set of reflections below the interbed multiple generator layer may be extracted from one or more recorded traces closest to the desired shot-side traces. A third set of reflections below the interbed multiple generator layer may be extracted from one or more recorded traces closest to the desired receiver-side traces. The interbed multiples for the first target trace may be estimated based on the first set, the second set, and the third set.Type: GrantFiled: August 5, 2009Date of Patent: April 24, 2012Assignee: WesternGeco L.L.C.Inventors: Paolo Terenghi, William H. Dragoset, Jr., Ian Moore
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Publication number: 20100074052Abstract: A method and apparatus for predicting interbed multiples is described herein. Trace geometries may be generated for one or more desired shot-side traces, one or more desired receiver-side traces, and one or more desired interbed multiple generator traces, for a first target trace. A first set of reflections at the interbed multiple generator layer may be extracted from one or more recorded traces closest to the desired interbed multiple generator traces. A second set of reflections below the interbed multiple generator layer may be extracted from one or more recorded traces closest to the desired shot-side traces. A third set of reflections below the interbed multiple generator layer may be extracted from one or more recorded traces closest to the desired receiver-side traces. The interbed multiples for the first target trace may be estimated based on the first set, the second set, and the third set.Type: ApplicationFiled: August 5, 2009Publication date: March 25, 2010Inventors: Paolo Terenghi, William H. Dragoset, JR., Ian Moore