-
1.发明授权公开(公告)号：US11099290B2
公开(公告)日：2021-08-24
申请号：US16438884
申请日：2019-06-12
发明人： Jianyong Bai , Orhan Yilmaz
摘要： A system and method for attenuating surface waves in common shot gathers of seismic data recorded by a set of geophones by: iteratively executing a genetic algorithm over a plurality of generations to generate an optimal one-dimensional (1D) Earth model based on the common shot gather data by, successively refining a pool of candidate Earth models to better fit the common shot gather data, until optimal Earth models in sequential generations converge; generating synthetic surface wave data based on the optimal Earth model and canceling the synthetic surface wave data from the common shot gather data to generate new common shot gather data that reduces the noise due to surface waves; and iteratively executing the genetic algorithm over each new common shot gather data until optimal Earth models generated in sequential iterations of the genetic algorithm converge.
-
公开(公告)号：US20210215824A1
公开(公告)日：2021-07-15
申请号：US17129062
申请日：2020-12-21
发明人： Jianyong Bai , Orhan Yilmaz
摘要： A system and method for reducing migration distortions in migrated images of the Earth's subsurface. Recorded seismic data may be migrated, using a migration velocity model, to generate a migration image comprising distortions. Synthetic seismic data may be generated, using the migration velocity model, for a grid of scattered points. The synthetic seismic data may be migrated, using the migration velocity model, to generate impulse responses for the scattered points. The impulse responses are used as point spread functions (PSFs) which approximates the blurring operator, e.g., the Hessian operator. An optimal reflectivity model may be selected using image-domain least-squares migration (LSM), based on the PSFs, with a regularization of the difference between the migration image and a reflectivity model and a total variation (TV) regularization of the reflectivity model. An image of the optimal reflectivity model may be generated that has reduced migration distortions compared to the original migration image.
-
3.发明授权公开(公告)号：US10422923B2
公开(公告)日：2019-09-24
申请号：US14485018
申请日：2014-09-12
发明人： Alexandre Hugot , Jean-Claude Dulac
摘要： A system and method for receiving data associated with a set of microseismic events and a fracture network, the data associated with each microseismic event including a location where, and a time when, the microseismic event was recorded by one or more sensors. Each microseismic event in the set may be added to a fracture network in chronological order of the time when the microseismic event was recorded. Each microseismic event may be added by connecting the event to the fracture network by a fracture according to a connection criterion. A stimulated rock volume may be generated that is defined by an iso-surface of points having a constant distance to the fracture network, wherein the fracture network includes a plurality of microseismic events in the set and a plurality of fractures connecting the plurality of microseismic events according to the connection criterion.
-
4.发明授权公开(公告)号：US10400590B1
公开(公告)日：2019-09-03
申请号：US15295009
申请日：2016-10-17
发明人： Rick Aldred
IPC分类号： E21B49/00 , E21B49/02 , E21B47/024 , E21B7/04
摘要： A method includes acquiring measurement data from a plurality of measurements corresponding to different depths within a wellbore. Using a processor, a distribution of rock types in each cell of a plurality of geological cells around the wellbore is determined from the measurement data. Petrophysical characteristics of each cell of the plurality of geological cells are calculated from the distribution of rock types.
-
公开(公告)号：US20190187330A1
公开(公告)日：2019-06-20
申请号：US16275191
申请日：2019-02-13
发明人： Jean-Laurent MALLET
IPC分类号： G01V99/00
CPC分类号： G01V99/005
摘要： A method and system for computing and visualizing sedimentary attributes may include receiving, by a processor, paleo-geographic coordinates representing predicted approximate positions of particles of sediment deposited at a time period when a layer was originally formed. The processor may numerically compute or determine a sedimentation rate that varies laterally along the layer. The processor may determine a sedimentary attribute based on the lateral variation of the sedimentation rate along the layer with respect to the paleo-geographic coordinates. A monitor or display may display the sedimentary attribute of the layer in the present-day geological space.
-
6.发明申请公开(公告)号：US20200271804A1
公开(公告)日：2020-08-27
申请号：US16282077
申请日：2019-02-21
发明人： Yaniv Hollander , Orhan Yilmaz
摘要： A system and method for interpolating seismic data collected by a set of geophones arranged in an irregularly spaced grid by: transforming the collected seismic data by a Radon transform; pre-computing a set of basis function correlation factors by geometrically scaling a spatial geometry of each temporal frequency slice of the transformed seismic data independently by its temporal frequency; computing, solely in the transformed domain, an anti-leakage Radon transform of the seismic data by computing each Radon coefficient independently for each temporal frequency slice using the pre-computed basis function correlation factors, until a relative error between the collected seismic data and an approximation of the collected seismic data based on the Radon coefficients is less than a predetermined convergence threshold; and simulating seismic data collected in a regularly spaced grid by interpolating the anti-leakage Radon transform of the collected seismic data in the irregularly spaced grid.
-
公开(公告)号：US11156744B2
公开(公告)日：2021-10-26
申请号：US16807695
申请日：2020-03-03
摘要： A system and method is provided for restoring a 3D tomographic model of the Earth's subsurface geology from the present-day to a past restoration time. Whereas at the present time all faults represent active discontinuities, at a past restoration time some faults have not yet formed. Accordingly, the restored model divides the fault network into τ-active faults (discontinuous surfaces for faults that intersect the layer deposited at the past restoration time) and τ-inactive faults (continuous surfaces for faults that do not intersect the layer deposited at the past restoration time). A new 3D restoration transformation is also provided that uses linear geological constraints to process the restoration model in less time and generate more accurate geological images.
-
公开(公告)号：US11125913B2
公开(公告)日：2021-09-21
申请号：US16807695
申请日：2020-03-03
摘要： A system and method is provided for restoring a 3D tomographic model of the Earth's subsurface geology from the present-day to a past restoration time. Whereas at the present time all faults represent active discontinuities, at a past restoration time some faults have not yet formed. Accordingly, the restored model divides the fault network into τ-active faults (discontinuous surfaces for faults that intersect the layer deposited at the past restoration time) and τ-inactive faults (continuous surfaces for faults that do not intersect the layer deposited at the past restoration time). A new 3D restoration transformation is also provided that uses linear geological constraints to process the restoration model in less time and generate more accurate geological images.
-
公开(公告)号：US10466388B2
公开(公告)日：2019-11-05
申请号：US15258776
申请日：2016-09-07
发明人： Wan-Chiu Li , Anne-Laure Tertois , Romain Merland
摘要： A method for editing a volume-based model imaging geological structures. An initial volume-based model comprising a volumetric mesh and updated geological data defined within a region of the model is received. The volume-based model is decomposed by converting the volumetric mesh into surface meshes linked by stratigraphic fibers to generate a surface-based model. The defined region of the surface-based model is edited by editing positions of control nodes of the surface meshes along the stratigraphic fibers in the defined region of the model so as to fit the updated geological data. The plurality of stratigraphic fibers are updated based on the edited positions of the control nodes so as to fit the updated geological data. The edited surface-based model is meshed to generate an updated volume-based model comprising a volumetric mesh defined by the edited positions of the control nodes. The updated volume-based model is stored and/or displayed.
-
公开(公告)号：US20220357474A1
公开(公告)日：2022-11-10
申请号：US17864536
申请日：2022-07-14
发明人： Jianyong BAI , Orhan YILMAZ
摘要： Reducing migration distortions in migrated images of the Earth's subsurface. Recorded seismic data may be migrated, using a migration velocity model, to generate a migration image comprising ADCIGs with distortions. Synthetic seismic data may be generated, using the migration velocity model, for a grid of point scatterers. The synthetic seismic data may be migrated, using the migration velocity model, to generate impulse responses for the point scatterers. The impulse responses are used as point spread functions (PSFs) which approximate the blurring operator, e.g., the Hessian. An optimal reflectivity model may be selected using image-domain least-squares migration (LSM), based on the PSFs, with regularization of the difference between the migration image and a reflectivity model and a total variation (TV) regularization of the reflectivity model in the spatial and angular domains. An image of the optimal reflectivity model may be generated with reduced migration distortions compared to the original migration image.
-
-
-
-
-
-
-
-
-
搜索结果
18 条记录 (耗时 0.019 秒)