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Patent Agency Ranking
公开(公告)号：US20170168178A1
公开(公告)日：2017-06-15
申请号：US15364585
申请日：2016-11-30
Applicant: PGS Geophysical AS
Inventor： Sean Crawley , Jaime Ramos-Martinez , Alejandro Antonio Valenciano Mavilio , Nizar Chemingui
CPC classification number: G01V1/303 , G01V1/282 , G01V1/306 , G01V1/38 , G01V2210/614 , G01V2210/67
Abstract: The present disclosure is related to a velocity model update with a full waveform inversion gradient. At least one method can include updating a velocity model of a subsurface, which can include suppressing high wavenumber components of the velocity model provided by reflected energy with a decomposed full waveform inversion gradient. Low wavenumber components can be preserved in the velocity model.
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公开(公告)号：US11609349B2
公开(公告)日：2023-03-21
申请号：US17060763
申请日：2020-10-01
Applicant: PGS Geophysical AS
Inventor： Norman Daniel Whitmore, Jr. , Jaime Ramos-Martinez , Sean Crawley , Yang Yang , Alejandro Antonio Valenciano Mavilio , Nizar Chemingui
Abstract: Methods and systems described herein are directed to determining properties of a subterranean formation using an acoustic wave-equation with a novel formulation in terms of a velocity model and a reflectivity model of the subterranean formation. The acoustic wave equation may be used with full-waveform inversion to build high-resolution velocity and reflectivity models of a subterranean formation. The acoustic wave equation may be also used with least-squares reverse time migration in the image and space domains, to build a reflectivity model of the subterranean formation with enhanced resolution and amplitude fidelity. The velocity and reflectivity models of materials that form the subterranean formation reveal the structure and lithology of features of the subterranean formation and may reveal the presence of oil and natural gas reservoirs.
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公开(公告)号：US10353092B2
公开(公告)日：2019-07-16
申请号：US15364585
申请日：2016-11-30
Applicant: PGS Geophysical AS
Inventor： Sean Crawley , Jaime Ramos-Martinez , Alejandro Antonio Valenciano Mavilio , Nizar Chemingui
Abstract: The present disclosure is related to a velocity model update with a full waveform inversion gradient. At least one method can include updating a velocity model of a subsurface, which can include suppressing high wavenumber components of the velocity model provided by reflected energy with a decomposed full waveform inversion gradient. Low wavenumber components can be preserved in the velocity model.
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4.发明公开公开(公告)号：US20230305176A1
公开(公告)日：2023-09-28
申请号：US18123656
申请日：2023-03-20
Applicant: PGS Geophysical AS
Inventor： Norman Daniel Whitmore, JR. , Jaime Ramos-Martinez , Sean Crawley , Yang Yang , Alejandro Antonio Velenciano Mavilio , Nizar Chemingui
CPC classification number: G01V1/282 , G01V1/301 , G01V1/3843 , G01V2210/675
Abstract: Methods and systems described herein are directed to determining properties of a subterranean formation using an acoustic wave-equation with a novel formulation in terms of a velocity model and a reflectivity model of the subterranean formation. The acoustic wave equation may be used with full-waveform inversion to simultaneously build velocity and reflectivity models of a subterranean formation. The velocity and reflectivity models may be employed for quantitative interpretation. The velocity and reflectivity models may be employed to determine impedance and density of the subterranean formation for prospectivity assessment. The acoustic wave equation may be also used with least-squares reverse time migration in the image or data domains, to build a reflectivity model of the subterranean formation with enhanced resolution and amplitude fidelity. The velocity and reflectivity models reveal the structure and lithology of features of the subterranean formation and may reveal the presence of oil and natural gas reservoirs.
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公开(公告)号：US20210103065A1
公开(公告)日：2021-04-08
申请号：US17060763
申请日：2020-10-01
Applicant: PGS Geophysical AS
Inventor： Norman Daniel Whitmore, JR. , Jaime Ramos-Martinez , Sean Crawley , Yang Yang , Alejandro Antonio Valenciano Mavilio , Nizar Chemingui
Abstract: Methods and systems described herein are directed to determining properties of a subterranean formation using an acoustic wave-equation with a novel formulation in terms of a velocity model and a reflectivity model of the subterranean formation. The acoustic wave equation may be used with full-waveform inversion to build high-resolution velocity and reflectivity models of a subterranean formation. The acoustic wave equation may be also used with least-squares reverse time migration in the image and space domains, to build a reflectivity model of the subterranean formation with enhanced resolution and amplitude fidelity. The velocity and reflectivity models of materials that form the subterranean formation reveal the structure and lithology of features of the subterranean formation and may reveal the presence of oil and natural gas reservoirs.
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