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Keywords: surface wave
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Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426983
... Model-based modeling and subtraction of surface waves have proven quite successful during the last few years. In a layered half-space viscoelastic model, each layer is characterized by its thickness, P- and SV-wave velocities, density, and P and SV-wave quality factors. A method based on...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3402490
... waves that represent another type of high-amplitude noise and pose a further challenge to the seismic-data denoising and processing stage. In this work, we show a data-driven methodology for surface-waves suppression in active-source reflection seismic data acquired in 2018 at the Siilinjärvi mine in...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3405908
... Surface waves, such as ground roll, are a major source of coherent noise in land seismic data, and its attenuation is still a challenge during processing. Even with the most simplifying assumption of a homogenous half-space, one can show that ground roll displacements in x and z components of a...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3411521
... In mountain oil and gas seismic exploration, the deep-hole dynamite source is usually adopted because of the undulating terrain. When drilling shothole, the engine, drilling bit and support equipment as a whole form a noise source of continuous ground vibration, which generates the surface waves...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3411534
... Strong surface and guided waves in land seismic data often distort signals from deeper structures, leading to poor S/N. Accurate modeling and attenuation of aliased surface waves has been a long-standing challenge in onshore seismic processing and imaging. To address this issue, we propose a...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3418624
... upstream oil & gas interferometry frequency surface wave continuous recording legacy model reservoir characterization active data surface wave expanded abstract velocity model seg international exposition acquisition dispersion curve mwi model virtual data retrieving ultra-low...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427285
... sourcegenerated noise, surface waves and powerline interference, as demonstrated by comparing raw and denoised correlated data. Presentation Date: Wednesday, October 14, 2020 Session Start Time: 9:20 AM Presentation Time: 9:20 AM Location: Poster Station 13 Presentation Type: Poster upstream oil...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427336
... Type: Oral reservoir characterization continuity surface wave seg international exposition near-surface characterization broadband exploration geophysicist 10 configuration interpretation upstream oil & gas eage conference structural element inversion structural geology high...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427491
... noise introduces cross terms that are non-negligible for reflection wave retrieval, but can be suppressed for direct wave, scattered wave and refraction wave retrieval. Field data validate these findings. We further demonstrate that the retrieved surface wave can be used to estimate near-surface...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425905
.... Cars driving along the road and small Wave (MASW) method (Park et al. 1999), for shear-wave earthquakes excite Rayleigh waves with complementary velocity profile estimation using passive seismic events frequency bands. The surface waves induced by passing cars recorded by a roadside DAS array. We apply...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428182
... seismic data show improvements in isolating diffractions used proposed using surface waves. Backscatter Analysis of Sur- to locate voids. F-k ltering is a simple method for atten- face Waves (BASW) again implements an f-k lter on shot uating primary waves and enhancing diffraction amplitudes. records...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428202
... artificial intelligence shot gather shragge inversion data residual cross-penalization surface-wave inversion exploration geophysicist 10 reservoir characterization upstream oil & gas dispersion inversion wave phenomenon surface wave geophysics seg international exposition...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427126
... frequency upstream oil & gas surface wave imaging dispersion masw data rammer source receiver array reservoir characterization shot record surface-wave event correction university phase velocity exploration geophysicist 10 lmo correction spectrum seg international exposition...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427257
... phase velocity receiver exploration geophysicist 10 granite frequency sandstone geophysics fundamental mode reservoir characterization mode surface wave surface-wave analysis seg international exposition source-receiver configuration upstream oil & gas surface wave university...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427827
... Picking dispersion curves is required for many approaches for shallow-subsurface characterization using surface waves but is typically a labor-intensive process. Reliable, automatic picking would make these methods more efficient and practicable. We present a convolutional neural network (CNN...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427905
... Passive seismic methods in highly populated urban areas have gained much attention from geophysics and civil engineering communities. Linear arrays are usually deployed for passive surface-wave investigations because of their high efficiency and convenience, and methods commonly used for linear...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427517
... introduce the RNN-based surface-wave dispersion inversion method and validate the trained network using the overthrust model. Finally, seismic interferometry and RNN-based surface-wave inversion are applied to a synthetic record. The synthetic tests verify that train-induced vibrations can be a useful tool...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427988
... We present a new method for estimating the nonuniqueness and/or instability of the seismic surface-wave method. This new approach uses a recently introduced objective function based on the secular function (i.e., a secular objective function [SOF]) for finding solutions to the Rayleigh surface...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427522
... ovcharenko inversion surface wave exploration geophysicist 10 alkhalifah machine learning deep learning kazei expanded abstract seg international exposition seg technical program low-frequency data Extrapolating low-frequency prestack land data with deep learning Oleg Ovcharenko , Vladimir...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215091
... ABSTRACT The paper presents a method to simultaneously attenuate multimode ground roll in three-component (3C) prestack data. In surface-wave inversion an viscoelastic layered model is estimated to minimize the misfit of dispersion spectra obtained from vertical and radial components of...

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