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公开(公告)号：US20210048556A1
公开(公告)日：2021-02-18
申请号：US16541053
申请日：2019-08-14
Applicant: Chevron U.S.A. Inc.
Inventor： Tao Sun , Lewis Li , Brett M. Hern , Fabien J. Laugier , Maisha Lara Amaru , Ashley D. Harris , Morgan David Sullivan
Abstract: Correlation matrices may be used to simultaneously correlate multiple wells. A correlation matrix may be generated for individual pairs of multiple wells. The values of elements of the correlation matrices may be determined based on matching between segments of the multiple wells and segments of one or more computational stratigraphic models. An N-dimensional space including an axis for individual wells may be generated. Directed walk may be performed within the N-dimensional space to generate paths representing scenarios of correlations for segments of the multiple wells.
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公开(公告)号：US10761230B2
公开(公告)日：2020-09-01
申请号：US15725375
申请日：2017-10-05
Applicant: CHEVRON U.S.A. INC.
Inventor： Lisa Renee′ Goggin , Ke Wang , Maisha Lara Amaru
Abstract: A method is described for seismic imaging that may include receiving digital seismic data; processing the digital seismic data to create a digital seismic image in a seismic domain; flattening the digital seismic image to generate a digital flattened image; identifying artifacts in the digital flattened image; transforming the artifacts back into the seismic domain; and reprocessing the digital seismic data based on the artifacts in the seismic domain to generate a digital image with reduced artifacts. The method may be executed by a computer system.
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公开(公告)号：US11822030B2
公开(公告)日：2023-11-21
申请号：US17654630
申请日：2022-03-14
Applicant: Chevron U.S.A. Inc.
Inventor： Jinsong Chen , Huafeng Liu , Andrey Hanan Shabelansky , Cory James Hoelting , Min Yang , Ying Tan , Maisha Lara Amaru
CPC classification number: G01V1/345 , G01V1/282 , G06N7/01 , G01V2210/60 , G01V2210/74
Abstract: A method is described for seismic depth uncertainty analysis including receiving wavelet basis functions and cutoff thresholds and randomly perturbing wavelet coefficients in reduced wavelet space based on the wavelet basis functions and the cutoff thresholds to generate a plurality of random wavelet fields; receiving a reference model in a depth domain; transforming the plurality of random wavelet fields to the depth domain and combining them with the reference model to form candidate models; performing a hierarchical Bayesian modeling with Markov Chain Monte Carlo (MCMC) sampling methods using the candidate models as input to generate a plurality of realizations; and computing statistics of the plurality of realizations to estimate depth uncertainty. The method may be executed by a computer system.
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公开(公告)号：US20230288593A1
公开(公告)日：2023-09-14
申请号：US17654630
申请日：2022-03-14
Applicant: Chevron U.S.A. Inc.
Inventor： Jinsong Chen , Huafeng Liu , Andrey Hanan Shabelansky , Cory James Hoelting , Min Yang , Ying Tan , Maisha Lara Amaru
CPC classification number: G01V1/345 , G01V1/282 , G06N7/005 , G01V2210/74 , G01V2210/60
Abstract: A method is described for seismic depth uncertainty analysis including receiving wavelet basis functions and cutoff thresholds and randomly perturbing wavelet coefficients in reduced wavelet space based on the wavelet basis functions and the cutoff thresholds to generate a plurality of random wavelet fields; receiving a reference model in a depth domain; transforming the plurality of random wavelet fields to the depth domain and combining them with the reference model to form candidate models; performing a hierarchical Bayesian modeling with Markov Chain Monte Carlo (MCMC) sampling methods using the candidate models as input to generate a plurality of realizations; and computing statistics of the plurality of realizations to estimate depth uncertainty. The method may be executed by a computer system.
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公开(公告)号：US11249220B2
公开(公告)日：2022-02-15
申请号：US16541053
申请日：2019-08-14
Applicant: Chevron U.S.A. Inc.
Inventor： Tao Sun , Lewis Li , Brett M. Hern , Fabien J. Laugier , Maisha Lara Amaru , Ashley D. Harris , Morgan David Sullivan
IPC: G06F17/16 , G01V99/00 , G06F17/15 , G06F111/10
Abstract: Correlation matrices may be used to simultaneously correlate multiple wells. A correlation matrix may be generated for individual pairs of multiple wells. The values of elements of the correlation matrices may be determined based on matching between segments of the multiple wells and segments of one or more computational stratigraphic models. An N-dimensional space including an axis for individual wells may be generated. Directed walk may be performed within the N-dimensional space to generate paths representing scenarios of correlations for segments of the multiple wells.
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Patent Agency Ranking
公开(公告)号：US11604909B2
公开(公告)日：2023-03-14
申请号：US16706596
申请日：2019-12-06
Applicant: Chevron U.S.A. Inc.
Inventor： Tao Sun , Sebastien B. Strebelle , Ashley D. Harris , Maisha Lara Amaru , Lewis Li
Abstract: A computational stratigraphy model may be run for M mini-steps to simulate changes in a subsurface representation across M mini-steps (from 0-th subsurface representation to M-th subsurface representation), with a mini-step corresponding to a mini-time duration. The subsurface representation after individual steps may be characterized by a set of computational stratigraphy model variables. Some or all of the computational stratigraphy model variables from running of the computational stratigraphy model may be provided as input to a machine learning model. The machine learning model may predict changes to the subsurface representation over a step corresponding to a time duration longer than the mini-time duration and output a predicted subsurface representation. The subsurface representation may be updated based on the predicted subsurface representation outputted by the machine learning model. Running of the computational stratigraphy model and usage of the machine learning model may be iterated until the end of the simulation.
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公开(公告)号：US11263362B2
公开(公告)日：2022-03-01
申请号：US16744992
申请日：2020-01-16
Applicant: Chevron U.S.A. Inc.
Inventor： Tao Sun , Brett M. Hern , Brian Willis , Fabien J. Laugier , Maisha Lara Amaru , Ashley D. Harris , Morgan David Sullivan
Abstract: A subsurface representation may define simulated subsurface configuration of a simulated subsurface region. The simulated subsurface region may include simulated wells, and the simulated subsurface configuration may define simulated correlation between the simulated wells. Subsurface configuration of wells may be compared with the simulated subsurface configuration to generate similarity maps for the wells. Simulated wells may be matched to the wells based on the similarity maps and the arrangement of the wells. Correlation between the wells may be determined based on the simulated correlation between the matched simulated wells.
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公开(公告)号：US20200380390A1
公开(公告)日：2020-12-03
申请号：US16706596
申请日：2019-12-06
Applicant: Chevron U.S.A. Inc.
Inventor： Tao Sun , Sebastien B. Strebelle , Ashley D. Harris , Maisha Lara Amaru , Lewis Li
Abstract: A computational stratigraphy model may be run for M mini-steps to simulate changes in a subsurface representation across M mini-steps (from 0-th subsurface representation to M-th subsurface representation), with a mini-step corresponding to a mini-time duration. The subsurface representation after individual steps may be characterized by a set of computational stratigraphy model variables. Some or all of the computational stratigraphy model variables from running of the computational stratigraphy model may be provided as input to a machine learning model. The machine learning model may predict changes to the subsurface representation over a step corresponding to a time duration longer than the mini-time duration and output a predicted subsurface representation. The subsurface representation may be updated based on the predicted subsurface representation outputted by the machine learning model. Running of the computational stratigraphy model and usage of the machine learning model may be iterated until the end of the simulation.
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公开(公告)号：US10754050B2
公开(公告)日：2020-08-25
申请号：US15840413
申请日：2017-12-13
Applicant: Chevron U.S.A. Inc.
Inventor： Marek Kacewicz , Maisha Lara Amaru
Abstract: One embodiment of generating a pore pressure prediction through integration of seismic data and basin modeling includes crossplotting seismically derived velocities and effective stress at spatial coordinates; defining seismic transform functions and an uncertainty range from the crossplotting; transforming the seismically derived velocities into calculated effective stress using selected seismic transform functions and calculating pore pressure using an equation transforming the calculated effective stress into calculated pore pressure; identifying a subset of the selected seismic transform functions, where the subset is identified in response to the calculated pore pressure being adequate based on a comparison; using an inverse of the subset to convert the effective stress from the basin model into basin model derived velocities; building a hybrid velocity model by selecting velocities from the basin model derived velocities or from the seismically derived velocities in each region; and generating a digital seismic image using the hybrid velocity model.
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公开(公告)号：US20180284305A1
公开(公告)日：2018-10-04
申请号：US15840413
申请日：2017-12-13
Applicant: Chevron U.S.A. Inc.
Inventor： Marek Kacewicz , Maisha Lara Amaru
Abstract: One embodiment of generating a pore pressure prediction through integration of seismic data and basin modeling includes crossplotting seismically derived velocities and effective stress at spatial coordinates; defining seismic transform functions and an uncertainty range from the crossplotting; transforming the seismically derived velocities into calculated effective stress using selected seismic transform functions and calculating pore pressure using an equation transforming the calculated effective stress into calculated pore pressure; identifying a subset of the selected seismic transform functions, where the subset is identified in response to the calculated pore pressure being adequate based on a comparison; using an inverse of the subset to convert the effective stress from the basin model into basin model derived velocities; building a hybrid velocity model by selecting velocities from the basin model derived velocities or from the seismically derived velocities in each region; and generating a digital seismic image using the hybrid velocity model.
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