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Keywords: attenuation
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Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4074554
... The multiples in seismic data cause distortions of primary reflections from the target layer, which will affect the accuracy of the final imaging and hence reduce the reliability of seismic interpretation. In this paper, we describe an efficient method that attenuates multiples from post-stack...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4087567
... Direction-dependent seismic velocity and attenuation, namely seismic anisotropy, is inherent attribute of Earth media. It has been widely confirmed in both field and lab measurements, and has a prominent effect on amplitude, phase, and travel time characteristics of seismic wavefield. Accurate...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4100616
... The near surface layer causes a strong absorption and attenuation effect on seismic waves, which seriously affects the resolution of seismic data, distorts seismic waveforms, and affects seismic imaging and reservoir identification. In order to eliminate the near-surface absorption...
Proceedings Papers
Thais Sales, Frederico Xavier de Melo, Joel Monteiro, Dmitri Skorinski, Shady Attia, Mohammad Ghazey, Marcella Braga, Etory Sperandio, André Ferreira, Moacyr Bezerra, Thiago Costa
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4100792
... with the target reservoir interval. This case study proposes an iterative data-driven and deterministic process designed to attenuate the strong and complex surface multiples directly interfering with the reservoir interval. The workflow comprises of using two different prediction approaches followed by a multi...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4100956
... attenuation applied geoscience & energy 10 rtm image geologist media phase velocity exploration geophysicist amplitude distortion reservoir characterization q-rtm efficient q-rtm migration tti rtm image Efficient Q-RTM in anisotropic TTI media with phase and amplitude compensation Yongzhong...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-w08-01
... Low P-wave velocity (5.0 km/s) and high seismic attenuation in high-density (2.74 g/cm³) iron-rich tholeiitic basalts of the Deccan Large Igneous Province (LIP) remain a critical and unresolved issue. These basalts are being studied for permanent sequestration of CO2. Our comprehensive multi...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4101374
...-only techniques. petroleum geology economic geology p-wave dispersion geologist geological subdiscipline attenuation applied geoscience & energy 10 spectral analysis reservoir characterization dispersion spectra seismic model frequency geophysics spectral decomposition...
Proceedings Papers
Chunming Wang, Xiaohong Chen, Yongsheng Wang, Christof Stork, Sissy Theisen, Seann Day, Junru Jiao, Grace Yan, Xianhuai Zhu
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4091349
... A seismic survey located at Hero Ridges tectonic zone is overwhelmed by refraction multiple, which makes attenuation of multiples critical to obtain meaningful subsurface image. P & S Refraction multiples, or later refractions, are a common, difficult type of land seismic noise...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4091384
... Viscosity and anisotropy can cause phase distortion and energy attenuation of seismic waves, so it is necessary to consider the influence of such viscosity and anisotropy on seismic wave propagation when performing seismic imaging. In addition, because least-squares reverse time migration (LSRTM...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4091851
... Raw land seismic data acquired with point sensors has lower signal-to-noise ratio (SNR) than that acquired using geophone arrays due to noise attenuation in the array. However, the benefits of trace density and unaliased wavefield sampling for denoise and image resolution, combined with the ease...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4093246
... widened by more than 16Hz after seismic data compensation processing. geologist uphole survey data equation attenuation receiving point geology formula exploration geophysicist geophone coupling effect reservoir characterization geophone seismic wave amplitude spectrum excitation point...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4094158
... anisotropic permeability, and subsequently, there exists two different relaxation times resulting in two peaks in seismic frequency-dependent attenuation and velocity dispersion. The anisotropic permeability leads to seismic anisotropy in velocity dispersion and attenuation. This work can improve...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4094849
... and attenuation models a complex conversion back to Q . We formulate a method integrating a pre-trained multi-layer perceptron (MLP) to do the Q -relaxation variable mapping into a Recurrent Neural Network (RNN)-based FWI framework, which directly inverts for Q and elastic parameters using multiple SLS layers...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4096286
...) as a refer-ence threshold. This proposed method significantly reduces primary attenuation in comparison to a traditional Least-Squares subtraction. We apply this method in a cascaded demultiple workflow on a field dataset in the North Louisiana Salt Basin to demon-strate its efficacy in attenuating interbed...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4098607
... geological column with its variety of complex scenarios and challenges. geologist geological subdiscipline imaging kuwait processing technology petroleum geology reservoir characterization economic geology exploration attenuation azimuth expanded abstract seismic data inversion seismic...
Proceedings Papers
Yue Wang, Yang Luo, Peng Shen, Jingru Chen, Guangchi Xing, Ao Cai, Mark Fan, Guojian Shan, Lin Zhang, Xiaoting Lou, Zhengyun Zhou
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4098684
.... reverse time migration attenuation american association square reverse time migration reservoir characterization applied geoscience & energy 10 attenuation effect compensation geologist geological subdiscipline exploration geophysicist geophysics true amplitude angle domain geology...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4099204
... Surface-related multiple elimination (SRME) is an effective and widely used tool for the attenuation of multiple energy in marine seismic data. However, removing multiples with SRME is still challenging in geologically complex areas, and we often observe residual multiples in such settings...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4099591
... wave arrivals, generated by the large impedance contrast between the sediments and the salt, obscuring true subsalt geology in the final P-wave image. In this paper, a converted wave attenuation workflow is designed to address this noise. A dual-leg 3D visco-acoustic forward modeling approach...
Proceedings Papers
Ali Sayed, Francesca Twynam, Ran Bachrach, Maud Cavalca, Leo Leon, Maria Shadrina, Qingsong Li, Reetam Biswas, Daniel Tebo, Sam Buist
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3910360
... illumination effects that are unique to the 3D-VSP geometry. upstream oil & gas migration united states government production monitoring reservoir characterization geology reservoir surveillance vertical seismic profile attenuation geological subdiscipline exploration geophysicist...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3910343
... accuracy differential equation international applied geoscience snapshot american association attenuation propagation visco-acoustic equation modeling wavefield seismic modeling Fast viscoacoustic forward modeling method based on U-net Fourier Neural Operator Wenbin Tian*1, Yang Liu*1,2 1...
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