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1.发明授权公开(公告)号：US11536865B1
公开(公告)日：2022-12-27
申请号：US17456959
申请日：2021-11-30
摘要： Methods and systems for determining an interbed multiple attenuated pre-stack seismic dataset are disclosed. The methods include forming a post-stack seismic image composed of post-stack traces from the pre-stack seismic dataset and identifying a first, second, and third post-stack horizon on each of the post-stack traces. The methods further include for each pre-stack trace, generating a first, second, and third multiple-generator trace based on the first, second and third post-stack horizon and determining a correlation trace based, at least in part, on a correlation between the first multiple-generator trace and the second multiple-generator trace. The methods still further include predicting an interbed multiple trace by convolving the correlation trace and the third multiple-generator trace, determining an interbed multiple attenuated trace by subtracting the interbed multiple trace from a corresponding pre-stack seismic trace, and determining the interbed multiple attenuated pre-stack seismic dataset by combining the interbed multiple attenuated traces.
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公开(公告)号：US11320557B2
公开(公告)日：2022-05-03
申请号：US16834167
申请日：2020-03-30
发明人： Yimin Sun , Woodon Jeong , Constantinos Tsingas
摘要： A computer system receives a post-stack time-domain image having a first spectrum and representing one or more subsurface structures. The computer system reconstructs an increased-frequency version of the post-stack time-domain image using L0-constrained inversion and a least-squares mismatch ratio. The increased-frequency version of the post-stack time-domain image includes structural artifacts. The computer system removes the structural artifacts from the increased-frequency version of the post-stack time-domain image using singular value decomposition. The computer system combines the increased-frequency version of the post-stack time-domain image with the post-stack time-domain image using a weighting function. The computer system generates a combined version of the increased-frequency version of the post-stack time-domain image and the post-stack time-domain image. The combined version represents the one or more subsurface structures and has a second spectrum broader than the first spectrum.
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公开(公告)号：US20210278558A1
公开(公告)日：2021-09-09
申请号：US16813231
申请日：2020-03-09
摘要： A system for seismic imaging of a subterranean geological formation, the system includes a receiver configured to obtain seismic data comprising a data volume representing a post-stacked image. The system includes a filtering module configured to: apply frequency-wavenumber (F-K) filter to the data volume extract a negative-dip structure image and apply the frequency-wavenumber (F-K) filter to the data volume extract a positive-dip structure image. The system includes a diffraction rendering module configured to: multiply the positive-dip structure image with the negative-dip structure image and generate a diffraction-enhanced seismic image representing a geological formation of the data volume.
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公开(公告)号：US20230213672A1
公开(公告)日：2023-07-06
申请号：US17647223
申请日：2022-01-06
CPC分类号： G01V1/306 , G01V1/303 , G01V1/282 , G01V2210/6222
摘要： A method and system for forming a seismic image of a subterranean region are disclosed. The method includes determining an initial plan for a seismic survey with a value for each member of a set of acquisition parameters and acquiring a first seismic dataset from a first portion of the seismic survey based on the initial plan. The method further includes transmitting the first seismic dataset to a seismic processor, determining a first seismic image from the first seismic dataset by performing expedited seismic processing and determining a first updated plan for the seismic survey based on the first seismic image and acquiring a second seismic dataset from a second portion of the seismic survey based on the first updated plan. The method still further includes transmitting the second seismic dataset to the seismic processor and determining the seismic based on the first seismic dataset and the second seismic dataset.
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公开(公告)号：US11467303B2
公开(公告)日：2022-10-11
申请号：US16813231
申请日：2020-03-09
摘要： A system for seismic imaging of a subterranean geological formation, the system includes a receiver configured to obtain seismic data comprising a data volume representing a post-stacked image. The system includes a filtering module configured to: apply frequency-wavenumber (F-K) filter to the data volume extract a negative-dip structure image and apply the frequency-wavenumber (F-K) filter to the data volume extract a positive-dip structure image. The system includes a diffraction rendering module configured to: multiply the positive-dip structure image with the negative-dip structure image and generate a diffraction-enhanced seismic image representing a geological formation of the data volume.
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公开(公告)号：US20220268958A1
公开(公告)日：2022-08-25
申请号：US17185369
申请日：2021-02-25
摘要： A method is described that includes obtaining a multicomponent seismic data set for a subterranean region of interest and determining, using a computer processor, a PP stacked time-domain seismic image and a PS stacked time-domain seismic image from the multicomponent seismic data set. The method further includes transforming a recording-time axis of at least one of the PP stacked time-domain seismic image and the PS stacked time-domain seismic image to produce a pair of coarsely-registered PP and PS seismic images and filtering at least one of the pair to produce a pair of spectrally-matched PP and PS seismic images. Further, the method includes dynamically warping at least one of the pair of spectrally-matched PP and PS seismic images to produce a pair of fully-registered PP and PS seismic images.
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公开(公告)号：US20200049842A1
公开(公告)日：2020-02-13
申请号：US16058788
申请日：2018-08-08
摘要： A computer-implemented method includes the following. A frequency sweep using sweep parameters is emitted from a vibratory seismic source into geological layers. The sweep parameters include frequencies and modulation parameters for seismic waves. Signals are received from one or more sensors. The signals include seismic data acquisition information, including values identifying energy reflected back from boundaries where rock properties change. A determination is made regarding which of the reflected seismic waves are attenuated. The determination uses an integral transform and a thresholding algorithm for image segmentation. Optimum sweep parameters are determined based on the reflected seismic values that are attenuated and updated to compensate for local geology effects. The emitting, receiving, determining attenuation, determining optimum parameters, and updating are repeated until the received signals are determined to be satisfactory.
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公开(公告)号：US20190353812A1
公开(公告)日：2019-11-21
申请号：US15981033
申请日：2018-05-16
发明人： Dongliang Zhang , Tong Wang Fei , Constantinos Tsingas , Yi Luo
摘要： A method of generating diffraction images based on wave equations includes generating a source wavefield and a receiver wavefield. Based on the source wavefield, a first source wavefield propagating in a first direction and a second source wavefield propagating in a second direction are generated. Based on the receiver wavefield, a first receiver wavefield propagating in the first direction and a second receiver wavefield propagating in the second direction are generated. A first seismic image is generated based on the first source wavefield and the first receiver wavefield. A second seismic image is generated based on the second source wavefield and the second receiver wavefield. A final seismic image is generated based on the first seismic image and the second seismic image.
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9.发明授权公开(公告)号：US10371839B2
公开(公告)日：2019-08-06
申请号：US13910274
申请日：2013-06-05
发明人： Constantinos Tsingas
IPC分类号： G01V1/00
摘要： An array of seismic energy receivers is deployed at fixed locations across the length and width of a land surface area of interest. A land fleet composed of a number of vibratory swept frequency or vibroseis seismic energy sources is deployed at predetermined initial locations within the receiver array. The sources are arranged in groups which at their initial locations are spaced from other groups of the source fleet by an intergroup spacing distance representing a segment of the receiver array. Each of the vibratory sources in a source group is assigned within that group a designated specific length for its energy emissions and a frequency sweep band different from the other sources in the group. The sources in all groups concurrently emit energy at a succession of spaced, assigned locations as they are moved incrementally over their respective intergroup spacings. The responses of subsurface formations to the emissions from the sources are recorded as a blended seismic record by the fixed array of processors and made available for processing.
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10.发明公开公开(公告)号：US20240168191A1
公开(公告)日：2024-05-23
申请号：US18058646
申请日：2022-11-23
发明人： Constantinos Tsingas
IPC分类号： G01V1/38 , E21B7/12 , E21B47/001 , E21B47/04
CPC分类号： G01V1/3808 , E21B7/12 , E21B47/001 , E21B47/04 , G01V1/3852 , G01V2210/42 , G01V2210/6222 , G01V2210/74
摘要： Methods and systems are disclosed. The method includes determining a seismic acquisition grid for a seismic survey, composed of a first receiver grid, a second receiver grid, and a source grid, deploying a first plurality of seismic receivers according to the locations of the first receiver grid, and a second plurality of seismic receivers according to locations of the second receiver grid, and activating a seismic source at location based on the source grid. The method further includes recording a first seismic dataset using the first plurality of receivers and a second seismic dataset using the second plurality of receivers, and generating a velocity model using a velocity analysis method based on the first seismic dataset. The method still further includes forming a seismic image based on the velocity model and the second seismic dataset; and determining a location of a hydrocarbon reservoir based on the seismic image.
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