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1.发明公开公开(公告)号：US20240192394A1
公开(公告)日：2024-06-13
申请号：US18532203
申请日：2023-12-07
申请人： SK EARTHON CO., LTD. , IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
发明人： Jun Hwan CHOI , Chang Ho JEONG , Hyung Wook CHOI , Joong Moo BYUN , Jeong Hun YOO , Do Wan KIM
摘要： Techniques for a machine learning-based two-step impedance inversion method using seismic data are disclosed. In some embodiments of the disclosed technology, an impedance inversion method includes generating a domain adaptation model configured to predict, based on source data associated with a source area that includes a well, a P-impedance value of a target area that does not include a well, and generating, using the P-impedance value generated by the domain adaptation model, a P-impedance low frequency model configured to predict a final P-impedance value of the target area by performing an inversion. In this way, it is possible to accurately predict P-impedance value of an area where a well does not exist.
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公开(公告)号：US11892583B2
公开(公告)日：2024-02-06
申请号：US16924359
申请日：2020-07-09
发明人： Guillaume Cambois
CPC分类号： G01V1/368 , G01V2210/1425 , G01V2210/51 , G01V2210/677
摘要： A method for applying separated wave-field imaging onshore (1) by artificially creating up-going and down-going fields and (2) by using these fields in a migration algorithm. If there are any surface multiples in the data, the resulting image created using the migration algorithm will be distorted by the unknown free-surface reflection coefficient. In fact, the surface multiples may be generated with a complex series of reflection coefficients. The distortions found in the resulting image created using the migration algorithm are then removed.
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公开(公告)号：US11768303B2
公开(公告)日：2023-09-26
申请号：US17237746
申请日：2021-04-22
CPC分类号： G01V1/303 , G01V1/362 , G01V1/368 , G01V2210/322 , G01V2210/52 , G01V2210/6222
摘要： This specification describes workflows for, but is not limited to, performing full waveform inversion (FWI) to build high resolution velocity models to improve the accuracy of seismic imaging of a subterranean formation. This specification describes processes to automatically edit and enhance S/N quality of seismic data (such as land seismic data) to prepare the datasets for FWI. The methods for automatic corrections and pre-processing include: automatic iterative surface-consistent residual statics calculation, automatic rejection of anomalous traces (such as dead traces), and the automatic correction of surface-consistent amplitude anomalies (such as by scalar or deconvolution approaches). The operations include automatic “muting” of noise before first arrivals.
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公开(公告)号：US11740375B2
公开(公告)日：2023-08-29
申请号：US17712834
申请日：2022-04-04
发明人： Chengbo Li , Chuck Mosher , Leo Ji , Joel Brewer
CPC分类号： G01V1/368 , G01V1/282 , G01V1/364 , G01V2210/127 , G01V2210/57
摘要： A multi-stage inversion method for deblending seismic data includes: a) acquiring blended seismic data from a plurality of seismic sources; b) constructing an optimization model that includes the acquired blended seismic data and unblended seismic data; c) performing sparse inversion, via a computer processor, on the optimization model; d) estimating high-amplitude coherent energy from result of the performing sparse inversion in c); e) re-blending the estimated high-amplitude coherent energy; and f) computing blended data with an attenuated direct arrival energy.
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公开(公告)号：US20190204463A1
公开(公告)日：2019-07-04
申请号：US16189711
申请日：2018-11-13
申请人： Valeriy V. Brytik , Yaxun Tang , David Gaines , Fuxian Song , Anton Spirkin
发明人： Valeriy V. Brytik , Yaxun Tang , David Gaines , Fuxian Song , Anton Spirkin
摘要： A method and apparatus for imaging seismic data includes obtaining an initial model of a subsurface formation, wherein the model includes a plurality of nodes that form at least part of a grid; an initial dip value for the nodes; and a set of origin coordinates for each of the nodes; performing bottom-up ray tracing for each node in the model, resulting in a set of arrival coordinates for each node; identifying a plurality of gathers from the seismic data; for each gather: calculating a set of midpoint coordinates; defining a midpoint vicinity surrounding the set of midpoint coordinates; identifying the nodes having arrival coordinates within the midpoint vicinity; and estimating a unique aperture for each of the gathers based on the respective origin coordinates; storing the estimated apertures in a table; and generating a subsurface volume or image with subsurface reflectors determined with apertures of the respective gathers.
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公开(公告)号：US20170371055A1
公开(公告)日：2017-12-28
申请号：US15535159
申请日：2015-12-18
申请人： CGG SERVICES SAS
发明人： Gordon POOLE , Can PENG
CPC分类号： G01V1/375 , G01V1/366 , G01V1/368 , G01V2210/1214 , G01V2210/24 , G01V2210/3246 , G01V2210/614
摘要： Methods for processing seismic data acquired with non-impulsive moving sources are provided. Some methods remove cross-talk noise from the seismic data using emitted signal data and an underground formation's response estimate, which may be iteratively enhanced. Some methods perform resampling before a spatial or a spatio-temporal inversion. Some methods compensate for source's motion during the inversion, and/or are usable for multiple independently moving sources.
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公开(公告)号：US09772413B2
公开(公告)日：2017-09-26
申请号：US14329431
申请日：2014-07-11
CPC分类号： G01V1/282 , G01V1/003 , G01V1/005 , G01V1/247 , G01V1/303 , G01V1/362 , G01V1/368 , G01V1/38 , G01V1/3808 , G01V2210/1212 , G01V2210/127 , G01V2210/1423 , G01V2210/32 , G01V2210/6161 , G01V2210/6222 , G01V2210/66
摘要： Method for acquiring, at reduced acquisition cost, seismic data using simultaneous, field-encoded sources in the field (702), and then constructing pseudo source-records (703) that better meet the requirements for using additional simultaneous computer-encoded sourcing for computer simulations or forward modeling (706) as part of (707) iterative FWI (Full Wavefield Inversion) or RTM (Reverse Time Migration), with additional reduction in computational costs. By better meeting the requirements of simultaneous sourcing for FWI or RTM (701), artifacts and crosstalk are reduced in the output. The method can be used for marine streamer acquisition and other non-fixed spread geometries to acquire both positive and negative offsets and to mitigate the “missing data” problem for simultaneous-source FWI. It can also be used for land data to overcome issues with moving spreads and long continuous records.
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公开(公告)号：US20170235002A1
公开(公告)日：2017-08-17
申请号：US15518474
申请日：2015-10-23
申请人： WESTERNGECO LLC
CPC分类号： G01V1/364 , G01V1/325 , G01V1/368 , G01V1/38 , G01V2210/1293 , G01V2210/1423 , G01V2210/21 , G01V2210/44 , G01V2210/56 , G01V2210/57
摘要： Systems, methods, and computer-readable media for estimating a component of a seismic wavefield. The method may include accessing marine seismic data comprising a plurality of discrete measurements of a seismic wavefield; processing the marine seismic data to determine a relationship between a plurality of components of the seismic wavefield and each of the discrete measurements; and estimating from the marine seismic data processed via the one or more processors, each component of the seismic wavefield separated from each of the other plurality of components of the seismic wavefield and evaluated at a predetermined position.
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9.发明申请公开(公告)号：US20160327675A1
公开(公告)日：2016-11-10
申请号：US14915874
申请日：2014-09-26
发明人： Burkay Donderici
CPC分类号： G01V1/48 , E21B47/00 , E21B47/0002 , E21B47/0006 , E21B47/082 , E21B47/18 , G01V1/368 , G01V1/50 , G01V3/30
摘要： An example method for downhole surveying and measuring may include positioning a first conformable sensor proximate to a downhole element. The first conformable sensor may include a flexible material, a transmitter coupled to the flexible material, and a receiver coupled to the flexible material. An ultrasonic sensor may be positioned proximate to the downhole element. The receiver may measure an electrical response of the downhole element to a signal generated by the transmitter. An acoustic response of the downhole element may be measurements at the at the ultrasonic sensor. The electrical response and the acoustic response may be processed to determine a parameter of the downhole element.
摘要翻译： 用于井下测量和测量的示例性方法可包括将靠近井下元件的第一适形传感器定位。 第一适形传感器可以包括柔性材料，耦合到柔性材料的发射器和耦合到柔性材料的接收器。 超声波传感器可以靠近井下元件定位。 接收器可以测量井下元件对由发射器产生的信号的电响应。 井下元件的声响应可以是在超声波传感器处的测量。 可以处理电响应和声响应以确定井下元件的参数。
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公开(公告)号：US09477001B2
公开(公告)日：2016-10-25
申请号：US13850134
申请日：2013-03-25
IPC分类号： G01V1/36
CPC分类号： G01V1/368 , G01V1/36 , G01V2210/532 , G01V2210/675
摘要： Method for redatuming seismic data to any arbitrary location in the subsurface in a way that is consistent with the internal scattering in the subsurface. Direct arrival times are estimated from every point to every point on the edges of a virtual box in the subsurface (102). Green's functions are estimated by iterative optimization (103), using the direct arrival times as initial guesses (102), to minimize error in the source field reconstruction, which consists of the multidimensional auto-correlation of the Green's functions. The estimated Green's functions are the used to determine simulated internal multiple reflections (104). The measured data may be corrected by subtracting the simulated internal multiple reflections, or the Green's function may be used to do local imaging or local velocity model building, particularly advantageous in full wavefield inversion (104).
摘要翻译： 将地震数据以与地下内部散射一致的方式将地震数据重新转换为地下任意位置的方法。 直接到达时间是从每个点估计到地下虚拟箱边缘的每个点（102）。 绿色函数通过迭代优化（103）估计，使用直接到达时间作为初始猜测（102），以最小化源场重建中的误差，其由绿色函数的多维自相关组成。 估计的绿色功能是用于确定模拟内部多重反射（104）。 可以通过减去模拟的内部多重反射来校正测量数据，或者可以使用Green的功能来进行局部成像或局部速度模型建立，在全波场反演中尤其有利（104）。
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