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公开(公告)号：US11662493B2
公开(公告)日：2023-05-30
申请号：US17247598
申请日：2020-12-17
Inventor： Anatoly I. Baumstein , Mehdi Aharchaou , Rongrong Lu , Junzhe Sun
CPC classification number: G01V1/364 , G01V1/3808 , G06N3/08 , G01V2210/21
Abstract: A method for enhancing properties of geophysical data with deep learning networks. Geophysical data may be acquired by positioning a source of sound waves at a chosen shot location, and measuring back-scattered energy generated by the source using receivers placed at selected locations. For example, seismic data may be collected using towed streamer acquisition in order to derive subsurface properties or to form images of the subsurface. However, towed streamer data may be deficient in one or more properties (e.g., at low frequencies). To compensate for the deficiencies, another survey (such as an Ocean Bottom Nodes (OBN) survey) may be sparsely acquired in order to train a neural network. The trained neural network may then be used to compensate for the towed streamer deficient properties, such as by using the trained neural network to extend the towed streamer data to the low frequencies.
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公开(公告)号：US20190250293A1
公开(公告)日：2019-08-15
申请号：US16394444
申请日：2019-04-25
Applicant: PGS Geophysical AS
CPC classification number: G01V1/30 , G01V1/325 , G01V1/364 , G01V1/38 , G01V2210/121 , G01V2210/1423 , G01V2210/46 , G01V2210/48 , G01V2210/56 , G01V2210/675
Abstract: Prediction and subtraction of multiple diffractions may include transforming previously acquired seismic data from a time-space domain to a transformed domain using a dictionary of compressive basis functions and separating, within the transformed previously acquired seismic data, a first portion and a second portion of the transformed previously acquired seismic data. Prediction and subtraction of multiple diffractions may also include predicting a plurality of multiple diffractions based on the separated first and second portions and adaptively subtracting the predicted multiple diffractions from the previously acquired seismic data. Prediction and subtraction of multiple diffractions may also include inverse transforming a particular seismic data set from the transformed domain to the time-space domain.
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公开(公告)号：US20190235114A1
公开(公告)日：2019-08-01
申请号：US16382769
申请日：2019-04-12
Inventor： Wail A. Mousa , Haroon Ashraf
IPC: G01V1/36
CPC classification number: G01V1/364 , G01V2210/324
Abstract: Aspects of the disclosure provide a method for processing three-dimensional (3D) hexagonally sampled seismic data. The method can include receiving 3D hexagonally sampled seismic data represented using 3D spiral architecture (SA), the 3D hexagonally sampled seismic data including a plurality of data traces each corresponding to center of a hexagon in the 3D SA, representing the 3D hexagonally sampled seismic data as two-dimensional (2D) seismic data using spiral architecture (SA) addressing scheme, and processing the 2D seismic data with an SA based signal processing process.
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公开(公告)号：US20190196040A1
公开(公告)日：2019-06-27
申请号：US16226611
申请日：2018-12-19
Applicant: Hunan University of Science and Technology
Inventor： Cailun HUANG , Jing WANG , Yongjun TIAN , Kai SUN , Li OUYANG , Kaixuan ZHANG , Xiongsheng YI
Abstract: Disclosed are a method and system of magnetotelluric synchronous detection and real-time inversion. The system includes a detection and inversion host (M) with wireless networking function and N2-1 detection and inversion extensions (Si) with wireless communication functions. The distance between each two detection and inversion extensions (Si) is D, i=1, 2, . . . , N2-1, and N is an odd number. The detection and inversion host is configured for collecting magnetic field signals and electric field signals at measurement points, wireless networking and cooperation, synchronous detection and real-time inversion control of the detection and inversion extensions (Si) in detection area. The detection and inversion extensions (Si) are configured for synchronous collection of electric field signals at measurement points and real-time inversion of detection data at measurement points under cooperative control of the detection and inversion host.
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公开(公告)号：US20190094400A1
公开(公告)日：2019-03-28
申请号：US15944713
申请日：2018-04-03
Applicant: China University of Geosciences (Beijing)
IPC: G01V1/36
CPC classification number: G01V1/364 , G01V2210/242 , G01V2210/324
Abstract: The present disclosure provides a vector denoising method for the multicomponent seismic data, including: obtaining a wave vector of the multicomponent seismic data; calculating a first mean wave vector for the multicomponent seismic data by applying a first moving window, performing a median filtering for the first mean wave vector to obtain a true modulus of the ground roll, subtracting the wave vector of the ground roll from the multicomponent seismic data to obtain a vector time-series; performing a mean filtering for the vector time-series by using a second moving window to obtain a second mean wave vector, performing a median filtering and performing a median the median filtering within the same receiving line for the second mean wave vector to supress the wave vector of the random noise in the vector time-series, thereby obtaining a wave vector of a purified effective signal.
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Patent Agency Ranking
公开(公告)号：US20180306940A1
公开(公告)日：2018-10-25
申请号：US15941474
申请日：2018-03-30
Applicant: Kyle J. Basler-Reeder , Spyridon K. Lazaratos , Eugene C. Trantham , Michael P. Matheney
Abstract: A method, including: determining, with a computer, a reflectivity spectrum; generating, with a computer, a target spectrum that is a convolution of a roll-off function and the reflectivity spectrum; and filtering, with a computer, seismic data to cause the seismic data to have the target spectrum.
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17.发明申请公开(公告)号：US20180259664A1
公开(公告)日：2018-09-13
申请号：US15914802
申请日：2018-03-07
Applicant: Saudi Arabian Oil Company
Inventor： Weichang Li , Ke Chen
CPC classification number: G01V1/368 , G01V1/325 , G01V1/364 , G01V2210/324 , G01V2210/3246 , G01V2210/3248
Abstract: Seismic survey data is received, indexed into index sets, and each index set partitioned into data blocks. For each particular data block of a particular index set, the particular data block is sliced into frequency slices. For each particular frequency slice of the particular data block, the particular frequency slice is processed to remove random and erratic noise by: forming a Hankel matrix from the particular frequency slice: determining an optimal rank for the Hankel matrix, determining a clean signal and erratic noise from the ranked Hankel matrix, and returning the clean signal and erratic noise for the particular frequency slice. A clean signal is assembled from the index sets.
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公开(公告)号：US20180217284A1
公开(公告)日：2018-08-02
申请号：US15879661
申请日：2018-01-25
Applicant: Saudi Arabian Oil Company
Inventor： Yang Zhao , Roy Matthew Burnstad , Weichang Li
Abstract: Received shot gathers are sorted to a common receiver gather. A target three-dimensional (3D) amplitude spectrum of seismic wavefield direct arrivals is computed from synthetic data. A 3D amplitude spectrum of seismic wavefield direct arrivals in field data is computed for each receiver. A matched filter is calculated from the 3D amplitude spectrum of field data to target response and applied to downgoing seismic wavefields separated from the common receiver gather to generate filtered downgoing seismic wavefields. Time-dependent smoothing of the filtered downgoing seismic wavefields is performed to generate smoothed downgoing seismic wavefields. A cross-correlation is calculated between upgoing seismic wavefields separated from the common receiver gather and the smoothed downgoing seismic wavefields.
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公开(公告)号：US20180188402A1
公开(公告)日：2018-07-05
申请号：US15738659
申请日：2015-06-22
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Timur Vyacheslavovich ZHARNIKOV , German Sergeevich SCHELIK , Takeshi ENDO , Denis Evgenievich SYRESIN , Toshihiro KINOSHITA
CPC classification number: G01V1/48 , G01V1/364 , G01V2210/324 , G01V2210/626
Abstract: Acoustic signals sent by a logging tool disposed in a borehole are detected by receivers located on the logging tool. Time domain representations of the detected acoustic signals are converted into frequency domain representations. Then at least one frequency range is selected and the detected acoustic signals corresponding to each selected frequency range are filtered. Eigenvectors for the filtered data for each selected frequency range are computed and dependence of the eigenvectors on the frequency is obtained. System for processing acoustic signals comprises a computer in communication with the logging tool and a set of instructions executable by the computer.
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公开(公告)号：US20180081072A1
公开(公告)日：2018-03-22
申请号：US15559416
申请日：2016-03-21
Applicant: Schlumberger Technology Corporation
Inventor： James Richett , Philippe Caprioli
IPC: G01V1/36
CPC classification number: G01V1/36 , G01V1/364 , G01V1/38 , G01V2210/56
Abstract: A method for deghosting marine seismic streamer data includes receiving the marine seismic data recorded from a single streamer. A representation of an upgoing wavefield in the marine seismic data is defined. The representation of the upgoing wavefield includes a first wave component in a plane and a second wave component that is perpendicular to the plane. A linear system is built that models a wavefield using the representation. The wavefield includes the upgoing wavefield and a downgoing ghost wavefield. The upgoing wavefield is estimated, within the representation, by inverting the linear system.
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