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Keywords: reflection data
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Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581182
... oil & gas applied geoscience geophysics ursin function seismogram ultra-low frequency ava analysis geophysical prospecting annual international conference matrix reservoir characterization approximation reflection data inversion seismogram frequency wavelet amundsen exploration...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427578
... We present a stochastic inversion procedure for surface-based common-offset ground-penetrating radar (GPR) reflection data. The method is based on simulated annealing (SA) and conditioned to borehole information available along the GPR profile. Application to synthetic and field data indicates...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427176
... prone to the cycle-skipping problem. Therefore, to facilitate the practical application of reflection data in velocity reconstruction, we design a two-stage workflow, in which reflection traveltime inversion (RTI) and RWI are cascaded and solved using the truncated Gauss-Newton method to obtain...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3214777
... data reservoir characterization waveform inversion wavelet inversion log-validated waveform inversion reflection data modelled shot record workflow 1 full waveform inversion migration reflectivity shot record amplitude margrave Bleibinhaus , F. , J. A. Hole , T...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3202301
... denote reconstruct reflection response reflection function retrieval marchenko equation reflection data da Costa Filho , C. A. , M. , Ravasi , A. , Curtis , and G. A. , Meles , 2014 , Elastodynamic Green’s function retrieval through single-sided Marchenko inverse...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215459
... ABSTRACT Reflection-waveform inversion (RWI) utilizes reflection data to recover the background velocity. Due to the limited apertures of reflection data illuminating targets, and the trade-off between the depth of reflectors and the average velocity above the reflectors, RWI is inherently ill...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216501
... ABSTRACT Reflection full-waveform inversion (RFWI) is a wave equation based model building approach that utilizes reflection data and can update deeper parts of a velocity model not accessible by diving waves of standard FWI. In this paper, we propose an efficient RFWI workflow that uses full...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2995437
... ABSTRACT Although, with the usual seismic acquisition, much of the information about subsurface parameters is contained in the reflections data, many of the current Full Waveform Inversion applications still focus on the use of the transmitted energy (i.e. refractions). In order to reduce...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2998611
... inclusion demonstrate that optimal-transport FWI is able to update the low-wavenumber components. Presentation Date: Wednesday, October 17, 2018 Start Time: 8:30:00 AM Location: 207C (Anaheim Convention Center) Presentation Type: Oral reservoir characterization reflection data fwi seg...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2995832
... , R223 – R233 , 10.1190/geo2013-0004.1 . Tarantola , A. , 1984 , Inversion of seismic reflection data in the acoustic approximation : Geophysics , 49 , 1259 – 1266 , 10.1190/1.1441754 . Xu , S. , D. Wang , F. Chen , G. Lambare , and Y...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2996291
... We investigate the benefits of improving the quantitative estimation of reflectivity in reflection FWI (RFWI). This is an important step of the inversion process, since it not only affects the generation of the synthetic reflection data, but also the generation of the "rabbit ears" along...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2972971
... estimates from these virtual responses. The prestack multiples are adaptively subtracted from the original reflection data, and then images are created. We provide detailed comparisons between the image obtained from the multiples-attenuated image, the migrated original dataset, and an image obtained...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17679411
... ABSTRACT A modified implementation of Marchenko redatuming leads to a filter that removes internal multiples from reflection data. It produces local reflectivity at two-way travel time. The method creates new primary reflections resulting from emitted events that eliminate internal multiples...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17731403
...Extending the reach of FWI with reflection data: Potential and challenges Adriano Gomes* and Nicolas Chazalnoel, CGG Summary We present a Reflection FWI (RFWI) workflow to update the velocity model using the low-wavenumber component of the FWI gradient of reflection data. This is achieved...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17738085
... the coherence of the reflection energy and minimizing the misfit between model arrival times and the recorded first arrival times. This approach can alleviate inherent limitations in shallow refraction data by using coherent reflection data. Presentation Date: Thursday, September 28, 2017 Start Time: 8:30 AM...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17748868
... ABSTRACT The Green’s theorem wave-separation methods (e.g., separating the reference wave and the reflection data, and deghosting) have an important property of naturally accommodating an arbitrary measurement surface. However, for non-horizontal acquisition, those methods cannot locate...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17792806
... approximate inverse operator migration seg seg international exposition true amplitude imaging inverse operator original data reservoir characterization geophysics reflection data modeling operator incomplete data interpolation velocity model seismic data iteration operator...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17663453
... are updated simultaneously. The algorithm is applied to multicomponent reflection data generated for a modified section of the BP TI model. The inversion significantly reduces the data misfit and recovers the long-wavelength components of the attenuation parameters, especially in the upper part of the section...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13866393
... Date: Monday, October 17, 2016 Start Time: 1:00:00 PM Location: 147/154 Presentation Type: ORAL reflection response experimental marchenko attenuation broggini wavefield reflection data reservoir characterization iterative marchenko scheme geometry marchenko wapenaar diameter seg...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13868798
... displacement reservoir characterization reference medium acquisition ocean bottom weglein separation deghosted reflection data seg seg international exposition ocean bottom data wave separation reflection data measurement surface pressure data upstream oil & gas annual meeting...

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