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公开(公告)号：US20240069225A1
公开(公告)日：2024-02-29
申请号：US17822743
申请日：2022-08-26
IPC分类号： G01V1/24 , E21B47/0224 , G01V1/30 , G01V1/34
CPC分类号： G01V1/247 , E21B47/0224 , G01V1/301 , G01V1/34
摘要： Systems and methods are disclosed. The method includes determining first metadata for a first seismic data file from a first database, generating a control file using the first metadata, and converting the first seismic data file in a predetermined file format to a destination file format using the control file. The first metadata comprises first values of a first plurality of seismic survey geometry parameters. The method further includes storing a first metadata file in a second database, wherein the first metadata file comprises the first metadata, and storing the first seismic data file in the destination file format in the second database. The method still further includes determining whether the first values of the first plurality of seismic survey geometry parameters duplicate second values of the first plurality of seismic survey geometry parameters.
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公开(公告)号：US11579321B2
公开(公告)日：2023-02-14
申请号：US17085216
申请日：2020-10-30
发明人： Christopher B. Ayadiuno , Xuekai Sun , Wei Li
IPC分类号： G01V1/28 , E21B47/0224 , G01V1/34 , G01V1/48
摘要： A method of realizing an shear wave propagation velocity anisotropy characterization within a display for a wellbore region including, obtaining a shear wave propagation velocity anisotropy intensity, and a shear wave propagation velocity anisotropy azimuth. A directional line segment is determined to represent the anisotropy for each of a plurality of measured depth points along the wellbore, and plotted on the display as a plurality of directional line segments to produce a 1-dimensional anisotropy characterization plot.
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公开(公告)号：US11079511B2
公开(公告)日：2021-08-03
申请号：US16077487
申请日：2017-06-28
IPC分类号： G01V1/50 , G01V1/30 , E21B47/0224 , E21B47/135
摘要： A system for processing DAS VSP surveys is provided. The system includes a DAS data collection system coupled to at least one optical fiber at least partially positioned within a wellbore and configured to either activate or passively listen to a seismic source of energy for one or more times. The system further includes an information processing system connected to the DAS data collection system. A seismic dataset is received from the DAS data collection system recorded in a spatiotemporal domain. The seismic dataset is converted into intercept-time ray-parameter domain dataset. Local apparent slope is determined for each seismic signal in the received seismic dataset. Amplitude correction is performed for the received seismic signals by using the slowness profile and the determined local apparent slope in the intercept-time ray-parameter domain dataset. The corrected intercept-time ray-parameter domain dataset is converted back into the spatiotemporal domain.
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公开(公告)号：US11078784B2
公开(公告)日：2021-08-03
申请号：US16595617
申请日：2019-10-08
IPC分类号： E21B49/00 , G01V1/34 , E21B47/085 , E21B47/0224 , E21B47/12 , E21B44/00
摘要： A method may comprise recording a first reflected waveform with a first transducer to form a first data set from a first excitation, recording a second reflected waveform with a second transducer to form a second data set from a second excitation, estimating a first sensitivity correction factor for the first data set, applying the first sensitivity correction factor to at least a portion of the first data set to form a first sensitivity corrected data set. The method may further comprise estimating a second sensitivity correction factor for the second data set, applying the second sensitivity correction factor to at least a portion of the second data set to form a second sensitivity corrected data set, stacking the first sensitivity corrected data set amplitudes and forming a first image, stacking the second sensitivity corrected data set amplitudes and forming a second image, and comparing the images.
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公开(公告)号：US20210199832A1
公开(公告)日：2021-07-01
申请号：US16077487
申请日：2017-06-28
IPC分类号： G01V1/50 , G01V1/30 , E21B47/0224 , E21B47/135
摘要： A system for processing DAS VSP surveys is provided. The system includes a DAS data collection system coupled to at least one optical fiber at least partially positioned within a wellbore and configured to either activate or passively listen to a seismic source of energy for one or more times. The system further includes an information processing system connected to the DAS data collection system. A seismic dataset is received from the DAS data collection system recorded in a spatiotemporal domain. The seismic dataset is converted into intercept-time ray-parameter domain dataset. Local apparent slope is determined for each seismic signal in the received seismic dataset. Amplitude correction is performed for the received seismic signals by using the slowness profile and the determined local apparent slope in the intercept-time ray-parameter domain dataset. The corrected intercept-time ray-parameter domain dataset is converted back into the spatiotemporal domain.
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公开(公告)号：US10927667B2
公开(公告)日：2021-02-23
申请号：US15877588
申请日：2018-01-23
申请人： Silixa Ltd. , CHEVRON U.S.A. INC.
IPC分类号： E21B47/135 , G01P5/24 , G01N29/46 , E21B47/0224 , G01F1/708 , G01N29/024
摘要： Externally generated noise can be coupled into a fluid carrying structure such as a pipe, well, or borehole so as to artificially acoustically “illuminate” the pipe, well, or borehole, and allow fluid flow in the structure or structural integrity to be determined. In the disclosed system, externally generated noise is coupled into the structure being monitored at the same time as data logging required to undertake the monitoring is performed. This has three effects. First, the externally generated sound is coupled into the structure so as to “illuminate” acoustically the structure to allow data to be collected from which fluid flow may be determined, and secondly the amount of data that need be collected is reduced, as there is no need to log data when the structure is not being illuminated. Thirdly, there are signal processing advantages in having the data logging being undertaken only when the acoustic illumination occurs.
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公开(公告)号：US20240118442A1
公开(公告)日：2024-04-11
申请号：US17959214
申请日：2022-10-03
IPC分类号： G01V1/34 , E21B44/00 , E21B47/0224 , G01V1/30
CPC分类号： G01V1/345 , E21B44/00 , E21B47/0224 , G01V1/303 , E21B2200/20 , G01V2210/1295 , G01V2210/1425 , G01V2210/622 , G01V2210/65 , G01V2210/74
摘要： Systems and methods for automated first arrival picking are disclosed. The method includes obtaining a seismic dataset composed of a plurality of seismic gathers and determining a pilot for each gather, where the pilot includes a position on an ordinate axis for each seismic trace representing a first arrival. The method continues iteratively until a stopping criterion is met by creating a preconditioned gather using the pilot, determining a differential pilot using global path tracing subject to a constraint and incrementing the pilot using the differential pilot to create a total picked first arrival. Once the stopping criterion has been met, the method further includes determining a final picked first arrival based on the total picked first arrival, determining a seismic velocity model from the final picked first arrival using a tomographic inversion and creating a seismic image using the seismic velocity model and the seismic dataset.
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公开(公告)号：US11905809B2
公开(公告)日：2024-02-20
申请号：US17679996
申请日：2022-02-24
IPC分类号： E21B43/25 , E21B43/16 , E21B47/003 , E21B47/0224 , E21B49/00
CPC分类号： E21B43/25 , E21B43/16 , E21B47/003
摘要： A system can determine a heterogeneity and a score for a reservoir for optimizing a drilling location. The system can receive a wireline log associated with a well that is positioned in a subterranean formation that includes a reservoir. The system can determine, using the wireline log, at least one statistical parameter for an interval of the well. The system can determine, using the at least one statistical parameter, a vertical heterogeneity of the reservoir. The system can determine, using the vertical heterogeneity, a score associated with the reservoir. The score can indicate an extraction difficulty and a carbon intensity of the reservoir. The system can output the score for optimizing a drilling location.
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公开(公告)号：US11549353B2
公开(公告)日：2023-01-10
申请号：US16275627
申请日：2019-02-14
摘要： Techniques for determining a wellbore drilling path includes identifying input seismic data associated with a subterranean zone that includes a wellbore drilling target. The input seismic data includes primary seismic events and multiple seismic events. The input seismic data is processed to remove the multiple seismic events and at least one of the primary seismic events from the input seismic data. An orthogonalization of the processed input seismic data is performed to recover the at least one primary seismic event into a seismic image of the subterranean zone that excludes at least a portion of the multiple seismic events. A wellbore path is determined from a terranean surface toward the wellbore drilling target for a drilling geo-steering system based on the seismic image of the subterranean zone.
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公开(公告)号：US20220137246A1
公开(公告)日：2022-05-05
申请号：US17085216
申请日：2020-10-30
发明人： Christopher B. Ayadiuno , Xuekai Sun , Wei Li
IPC分类号： G01V1/28 , G01V1/48 , E21B47/0224 , G01V1/34
摘要： A method of realizing an shear wave propagation velocity anisotropy characterization within a display for a wellbore region including, obtaining a shear wave propagation velocity anisotropy intensity, and a shear wave propagation velocity anisotropy azimuth. A directional line segment is determined to represent the anisotropy for each of a plurality of measured depth points along the wellbore, and plotted on the display as a plurality of directional line segments to produce a 1-dimensional anisotropy characterization plot.
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