Patents by Inventor Reda Baina
Reda Baina 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: 11378704Abstract: The invention relates to a computer-implemented method for generating an image of a subsurface of an area of interest from seismic data. The method comprises providing seismic wavefields, providing a zero-offset seismic wavefield dataset, determining a seismic velocity parameter model w(x) comprising an initial model w0(x), a low frequency perturbation term ?mb(x) and a high frequency perturbation term ?mr(x), determining an optimal seismic velocity parameter model wopt(x) by computing a plurality of iterations, each iteration comprising calculating and optimizing a cost function, said cost function being dependent on the zero-offset seismic wavefield and on the low frequency perturbation term ?mb(x) as a parameter in the optimization of the cost function, the high frequency perturbation term ?mr(x) being related to the velocity parameter model w(x) to keep the provided zero-offset seismic wavefield data invariant with respect to the low frequency perturbation term ?mb(x).Type: GrantFiled: June 8, 2018Date of Patent: July 5, 2022Assignee: TOTAL SEInventors: Raphaël Valensi, Reda Baina
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Publication number: 20210223424Abstract: The invention relates to a computer-implemented method for generating an image of a subsurface of an area of interest from seismic data. The method comprises providing seismic wavefields, providing a zero-offset seismic wavefield dataset, determining a seismic velocity parameter model w(x) comprising an initial model w0(x), a low frequency perturbation term ?mb (x) and a high frequency perturbation term ?mr(x), determining an optimal seismic velocity parameter model wopt(x) by computing a plurality of iterations, each iteration comprising calculating and optimizing a cost function, said cost function being dependent on the zero-offset seismic wavefield and on the low frequency perturbation term ?mb(x) as a parameter in the optimization of the cost function, the high frequency perturbation term ?mr(x) being related to the velocity parameter model w(x) to keep the provided zero-offset seismic wavefield data invariant with respect to the low frequency perturbation term ?mb(x).Type: ApplicationFiled: June 8, 2018Publication date: July 22, 2021Applicant: TOTAL SEInventors: Raphaël VALENSI, Reda BAINA
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Patent number: 10557956Abstract: The method processes, for each of a plurality of shots at respective source locations, seismic traces recorded at a plurality of receiver locations. Common-mid-point-modulated data are also computed by multiplying the seismic data in each seismic trace by a horizontal mid-point. A depth migration process is applied to the seismic data to obtain a first set of migrated data, and to the mid-point-modulated data to obtain a second set of migrated data. For each shot, aperture values are estimated and associated with respective subsurface positions. A migrated value for a depth and an aperture in a surface aperture common image gather at a horizontal position is a migrated value of the first set of migrated data for a shot such that the estimated aperture value associated with that subsurface position is the aperture.Type: GrantFiled: March 31, 2016Date of Patent: February 11, 2020Assignee: TOTAL SAInventors: Matteo Giboli, Cyril Agut, Reda Baina
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Publication number: 20180106919Abstract: The method processes, for each of a plurality of shots at respective source locations, seismic traces recorded at a plurality of receiver locations. Common-mid-point-modulated data are also computed by multiplying the seismic data in each seismic trace by a horizontal mid-point. A depth migration process is applied to the seismic data to obtain a first set of migrated data, and to the mid-point-modulated data to obtain a second set of migrated data. For each shot, aperture values are estimated and associated with respective subsurface positions. A migrated value for a depth and an aperture in a surface aperture common image gather at a horizontal position is a migrated value of the first set of migrated data for a shot such that the estimated aperture value associated with that subsurface position is the aperture.Type: ApplicationFiled: March 31, 2016Publication date: April 19, 2018Applicant: TOTAL SAInventors: Matteo GIBOLI, Cyril AGUT, Reda BAINA
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Patent number: 9880303Abstract: Post-migration common image gathers (CIGs) are generated in a dip angle domain from measured seismic data. From a CIG, a hybrid Radon model is determined, including a reflection model related to concave features in the CIG and a diffraction model related to linear features in the CIG. The reflection model is transformed with a reflection Radon operator applied along inversion trajectories restricted around apices of the concave features to obtain reflection data. The diffraction model is transformed with a diffraction Radon operator to obtain diffraction data. The reflection and diffraction data at different horizontal positions can then be combined and summed to generate a migrated image of the subsurface.Type: GrantFiled: February 8, 2011Date of Patent: January 30, 2018Assignee: TOTAL SAInventors: Evgeny Landa, Reda Baina
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Patent number: 9632192Abstract: The method processes input including, for each of a plurality of shots at respective source locations, seismic traces recorded at a plurality of receiver locations. Offset-modulated data are also computed by multiplying the seismic data in each seismic trace by a horizontal offset between the source and receiver locations for said seismic trace. A depth migration process is applied to the seismic data to obtain a first set of migrated data, and to the offset-modulated data to obtain a second set of migrated data. For each shot, offset values are estimated and associated with respective subsurface positions, by a division process applied to the first and second sets of migrated data.Type: GrantFiled: May 23, 2011Date of Patent: April 25, 2017Assignee: TOTAL SAInventors: Reda Baina, Laurence Nicoletis, Matteo Giboli
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Patent number: 8948463Abstract: A method for analyzing seismic data by generating a post-migration common image gather in a dip angle domain from measured seismic data; detecting concave features related to reflection events in the common image gather and apexes; filtering out part of the concave features in the common image gather in a vicinity of the detected apexes; applying a hybrid Radon transform to the filtered common image gather to separate residues of the concave features from other image features related to diffraction events; and applying an inverse hybrid Radon transform to an image containing the separated features related to diffraction events to obtain a transformed common image gather in the dip angle domain.Type: GrantFiled: June 7, 2010Date of Patent: February 3, 2015Assignee: Total SAInventors: Evgeny Landa, Reda Baina
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Publication number: 20140149046Abstract: The method processes input including, for each of a plurality of shots at respective source locations, seismic traces recorded at a plurality of receiver locations. Offset-modulated data are also computed by multiplying the seismic data in each seismic trace by a horizontal offset between the source and receiver locations for said seismic trace. A depth migration process is applied to the seismic data to obtain a first set of migrated data, and to the offset-modulated data to obtain a second set of migrated data. For each shot, offset values are estimated and associated with respective subsurface positions, by a division process applied to the first and second sets of migrated data.Type: ApplicationFiled: May 23, 2011Publication date: May 29, 2014Applicant: TOTAL SAInventors: Reda Baina, Laurence Nicoletis, Matteo Giboli
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Publication number: 20140032119Abstract: Post-migration common image gathers (CIGs) are generated in a dip angle domain from measured seismic data. From a CIG, a hybrid Radon model is determined, including a reflection model related to concave features in the CIG and a diffraction model related to linear features in the CIG. The reflection model is transformed with a reflection Radon operator applied along inversion trajectories restricted around apices of the concave features to obtain reflection data. The diffraction model is transformed with a diffraction Radon operator to obtain diffraction data. The reflection and diffraction data at different horizontal positions can then be combined and summed to generate a migrated image of the subsurface.Type: ApplicationFiled: February 8, 2011Publication date: January 30, 2014Applicant: TOTAL SAInventors: Evgeny Landa, Reda Baina
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Publication number: 20130077832Abstract: A method for analyzing seismic data by generating a post-migration common image gather in a dip angle domain from measured seismic data; detecting concave features related to reflection events in the common image gather and apexes; filtering out part of the concave features in the common image gather in a vicinity of the detected apexes; applying a hybrid Radon transform to the filtered common image gather to separate residues of the concave features from other image features related to diffraction events; and applying an inverse hybrid Radon transform to an image containing the separated features related to diffraction events to obtain a transformed common image gather in the dip angle domain.Type: ApplicationFiled: June 7, 2010Publication date: March 28, 2013Applicant: TOTAL SAInventors: Evgeny Landa, Reda Baina