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Keywords: reflection
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Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3405908
...-2D field data from Alberta, Canada. Presentation Date: Tuesday, October 13, 2020 Session Start Time: 1:50 PM Presentation Time: 3:30 PM Location: Poster Station 13 Presentation Type: Poster attenuation surface wave ground roll matrix-vector form ground-roll attenuation reflection...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3410414
... The generalized stiffness reduction method (GSRM) was previously proposed to absorb the artificial reflections in seismic wave modeling in arbitrary elastic anisotropic media. However, the traditional PML technique and the original GSRM lose their effectiveness of removing the artificial edge...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3410748
.... Across some 2D profiles, the GPR signal was contaminated with high amplitude above surface diffractions, spurious signals generated from the rockshelter walls and ceiling. Separating these from subsurface reflections posed a challenge that we’ve attempted to overcome during processing. Interpretation was...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3419762
... neural network multiple reflection machine learning deep learning artificial intelligence hyperbolic radon transform radon transform seg international exposition iterative inversion equation velocity transform algorithm operator reservoir characterization upstream oil & gas...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3420999
... further investigation. Presentation Date: Monday, October 12, 2020 Session Start Time: 1:50 PM Presentation Time: 1:50 PM Location: 360C Presentation Type: Oral public safety law enforcement reservoir characterization reserves evaluation reflection search warrant estimates of resource in...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3421387
... & gas position error seg international exposition reservoir characterization seismic data full-waveform inversion artificial intelligence data difference exploration geophysicist 10 lumley reflection fwi full waveform inversion wei zhou inversion fwi result sea layer change artifact...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3422551
... generated by the E-vib in this challenging hard rock setting. The processing results suggest a set of reflections associated with the known iron-oxide mineralization, and a major crosscutting reflection interpreted to be from a fault system. This study illustrates the potential of the electronic seismic...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426646
... Conventional analysis of amplitude variation with offset for PS reflections is based on analytical reflection coefficients in a layered medium. We develop a least-squares reverse-time migration method for PS reflections based on a quasi-elastic wave equation. The quasi-elastic wave equation can...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427483
... Due to the shielding and absorption of volcanic rocks, the reflection of their underlying subsurface formations is weak, which poses great challenges to the implementation of underlying structures and reservoir prediction. For this reason, this paper proposes a five-parameter generalized S...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425692
...-similar features before any learning. Therefore, if the reflections are selfsimilar in the time-space domain, but the ground roll is not, the network can extract the reflections before the ground roll. To make reflections look more self-similar than the ground roll, we apply the normal moveout (NMO...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425742
...-resolution common depth-point (CDP) seismic about 25 km long and trends north-south through Richland reflection profiles. These profiles provide the clearest-yet County, Illinois, crossing the northern flank of the Paleozoic images of Precambrian basement beneath the Illinois Basin. depocenter of the basin...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425792
... learning exploration geophysicist 10 attenuation reflection frequency constraint deep learning approach separation We propose an unsupervised deep learning approach for seismic ground roll attenuation. This method consists of two stages. While the first stage aims at detecting the first...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428259
... The presence of internal multiple reflections reduces the accuracy and quality of the results obtained in many stages of seismic processing, e.g., velocity analysis, stacking and time/depth migration. A novel scheme called Marchenko multiple elimination (MME) has recently shown impressive...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428312
... oil & gas baseline seg international exposition interpretation injector kiyashchenko similarity vertical seismic profile reflection producer deepwater acquisition p-cable Considerations in planning, acquisition, processing and interpretation of 4D DAS VSP Albena Mateeva*, Denis...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426272
... Full waveform inversion (FWI) of limited-offset seismic reflection data achieves broadband imaging only in the shallow subsurface sampled by the diving waves. In order to image deeper targets, Reflection WI (RWI) exploits wavepaths generated by reconstructed reflectors to constrain the smooth...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427075
..., 2020 Session Start Time: 8:30 AM Presentation Time: 10:10 AM Location: 360D Presentation Type: Oral conventional rtm vertical seismic profile upstream oil & gas reflection geophysics rss-rtm image reservoir characterization fractured-basement imaging field data seg international...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3424516
... modeling full wavefield reflectivity method seg international exposition seismogram reservoir characterization field data seismic modeling inversion reflectivity upstream oil & gas equivalence full wavefield reflectivity modeling vector reflectivity equation impedance...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428396
... Carbonate cavity reservoirs have been a challenge in the industry for hydrocarbon exploration and production. Seismic imaging is able to find the cavities using the ‘beam string’ reflections. However, it lacks the detail of the cavities and the faults, sub-faults and fractures around them...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427709
... Full Waveform Inversion (FWI) utilizes refractions and reflections to improve the accuracy and resolution of the earth subsurface models. The use of refractions is limited by the maximum offset of the acquisition, up to their maximum penetration depth. In contrast, reflections can produce deeper...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427710
... resolution of seismic data, two types of shoal were classified: the thick shoal, ~ 15 m, having good seismic reflection response, with peak near the top; the thin interbeded shoal, with weak reflection and poor continuity. Seismic attributes indicate that the shoals are small, but concentrate in groups...

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