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Keywords: tomographic inversion
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Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4093064
... in complicated environments, how to stabilize the inversion solution, and how to speed up the process of tomographic inversion. Here I present a non-hyperbolic formula to describe the move-out behavior in complicated environments. I also propose an approach of the inversion from low to high resolution...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4093901
... Aiming at the problem of complex mountain modeling in western China, a stepwise tomographic inversion modeling method is studied for the requirements of pre-stack depth migration processing. The method consists of a series of measures to improve the surface accuracy, the near-surface model...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3744905
... and the shallow depth of the near-surface investigation data, the effect of tomographic inversion using these data as constraints is often poor. In areas with big thickness weathered layer such as desert and loess plateau, there exists an obvious high-velocity layer interface in the near- surface structure...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425531
... inversion depth migration optimization exploration geophysicist 10 carbonate rock western china velocity modeling method tomographic inversion carbonate formation reservoir characterization horizon correction drilling data seg international exposition structural form Velocity modeling method...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426249
...Constrained tomographic inversion static correction based on adaptive method Yanxiang Wang*,Junduo Zhang,Xiaowei Wang,Jiaqing Sun,Zhe Yang, PetroChina Research Institute of Petroleum Exploration & Development - Northwest Summary The core of solving the problem of static correction in (b) complex...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426182
... the Q model through tomography surface. In this paper we introduce a technique developed inversion using the seismic gathers for Q model building for both near surface and subsurface by joint application of uphole, VSP and seismic data, based 1. Initial Q model building on Q tomographic inversion...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427135
... low-velocity in mountainous thick loess tomographic inversion near-surface velocity to solve the regions, the velocity changes greatly with increasing depth static correction of southwest Tarim Basin is proposed. and the change law is not clear, and the rapid fluctuations of mountainous terrain make...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427545
... christmas tree mud layer tomographic inversion upstream oil & gas information exploration geophysicist 10 inversion reservoir characterization sanhu saline-alkali surface velocity model seg international exposition near-surface structure wave model application rayleigh wave inversion...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427958
...Well calibrated angle-gather tomography for anisotropic model building Po Zhang*, Daoliu Wang, Sheng Xu, Jinjun Liu and Hongbo Zhou, Equinor Summary Bakulin et al. 2010 introduced a linear constraint to the VTI tomographic inversion for each well marker. They We propose an approach for TTI velocity...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216378
... site annual meeting seg international exposition tomographic inversion interwell space seg 10 seismic testing upstream oil & gas borehole velocity section nuclear power plant reservoir characterization crosshole seismic testing geometry data information observation plane...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3214902
... initial velocity model nonlinear ray reflection tomography iteration geophysics velocity model seg international exposition annual meeting tomographic inversion enhancement reservoir characterization tomography estimation velocity model building Bakulin , A. , M. , Dmitriev...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997401
... static modeling tomographic inversion tomography tomography inversion top interface artificial intelligence upstream oil & gas complex surface area application correction static correction interface small refraction high velocity layer constraint surface velocity structure reservoir...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2998314
... , M. , M. Sacchi , and J. Zhang , 2018 , An efficient tomographic inversion method based on the Stochastic Approximation : Geophysics , 83 , no . 4 , U1 – U8 , 10.1190/geo2017-0213.1 . Vidale , J. , 1988 , Finite-difference calculation of travel times...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2984853
... Location: 204C (Anaheim Convention Center) Presentation Type: Oral inversion basin joint tomographic inversion unconventional basin seg international exposition fwi geophysics velocity model pennsylvania geological survey geology delaware basin iteration upstream oil & gas annual...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2963822
... model stack section property scan equation 3 tomography reservoir characterization velocity tomography annual meeting rde velocity analysis equation 5 migration gather residual depth error velocity scan tomographic inversion seg international exposition ABSTRACT Conventional...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17654536
... used by the static correction techniques invariably fail to give satisfactory results. In this paper, we proposed a dual-scale tomographic inversion method by combining BP neural network and LSQR, in order to obtain accurate near-surface velocity models for static corrections. The proposed method...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17776726
..., progressive tomographic inversion from shallow to deep, picking up isovelocity surface as datum surface for static correction, etc. We apply the technology in the PD 3D area for practical application. The problem of static correction is effectively resolved and the seismic image quality is improved...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13950552
... meeting hilburn reservoir characterization tomographic inversion annual international meeting trench area depth migration velocity model upstream oil & gas tomography imaging image-guided tomographic solution Cai , J. , Y. He , Z. Li , B. Wang , and M...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13758771
... from Rayleigh wave inversion with refraction interpretation, tomographic inversion, and Electric-Magnetic data. We firstly analyzed the resolution difference of f-v spectra calculated through f- k, -p, and phase shift approaches and propose a two-step spectrum normalization scheme for accurate picking...

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