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Keywords: matrix
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Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426921
... reservoir characterization reflectivity profile seg international exposition artificial intelligence deconvolution lawie upstream oil & gas vector cosine similarity matrix machine learning initial wavelet estimation sparse-spike deconvolution wiener deconvolution method...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426928
... exploration geophysicist 10 matrix data-driven time-lapse acquisition design seg international exposition receiver location monitor model reconstruction monitor survey dataset Data-driven time-lapse acquisition design via optimal receiver-source placement and reconstruction Yi Guo and Mauricio D...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426990
... Gauss-Newton (GN) iterative optimization scheme with model perturbation being sought in each solution step. The synthetic MT modelling subset of the inversion here is implemented using an E-field edge-based FE method. The coefficient matrix of the discretized forward solver is directly factorized and...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3418408
... iterative methods, Bayesian linearized inversion seems to avoid the heavy calculation Stochastic seismic inversion can integrate diverse datasets to burden. Nevertheless, a huge matrix needs to be inverted in estimate the spatial distribution of subsurface elastic Bayesian linearized inversion framework...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3418591
... with a vertical symmetry axis. Presentation Date: Wednesday, October 14, 2020 Session Start Time: 1:50 PM Presentation Time: 3:55 PM Location: Poster Station 7 Presentation Type: Poster reservoir characterization monoclinic medium geophysics matrix tsvankin hydraulic fracturing...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3423711
... exist for the time being. Presentation Date: Monday, October 12, 2020 Session Start Time: 1:50 PM Presentation Time: 3:30 PM Location: Poster Station 12 Presentation Type: Poster engine berkhout matrix joint migration inversion upstream oil & gas verschuur seg international...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3424142
... We present a numerical study of pore space and matrix evolution due to chemically active fluid flooding which is simulated at the pore scale. To quantify the evolution of the pore space we apply the methods of computational topology, that allow characterizing different core matrix dissolution...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427411
... seg international exposition tomography reservoir characterization source location upstream oil & gas migration sp-iccm method spatial resolution high resolution source location matrix source psd interstation cross-correlogram exploration geophysicist 10 noise high-resolution source...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427414
...-decomposition preconditioner discretization exploration geophysicist 10 matrix direct solver Large-scale frequency-domain seismic wave modeling on h-adaptive tetrahedral meshes with iterative solver and multi-level domain-decomposition preconditioners V. Dolean , P. H. Tournier , P. Jolivet , S. Operto...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425671
... iteration seg international exposition matrix sacchi fourier exploration geophysicist 10 noise Iterative deblending with robust Fourier thresholding Breno Bahia, Rongzhi Lin, and Mauricio D. Sacchi, University of Alberta SUMMARY imal or projected gradient descent (PGD) algorithms, where a non...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425780
... Presentation Time: 10:35 AM Location: 360A Presentation Type: Oral reservoir characterization shale gas variability log analysis complex reservoir optimization well logging upstream oil & gas artificial intelligence mineral constant composition constituent matrix petrophysical...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427176
... & gas waveform inversion exploration geophysicist 10 practical reflection waveform inversion artificial intelligence hessian matrix geophysics hessian reservoir characterization initial model reflection data inversion objective function rwi problem seg international exposition reflection...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3424753
... anisotropic media artificial intelligence triclinic media exploration geophysicist 10 background medium transmission coefficient approximation matrix media interface equation Reflection and transmission coefficient approximations for arbitrarily anisotropic media Song Jin* and Alexey Stovas...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425067
... viscoelastic properties of this substance depend on the mineral matrix, fluid density, fluid viscosity and the absolute value of fracture opening (not on the aspect ratio only like in the methods of effective medium theory). This gives an opportunity to analyze a dependence of the effective viscoelastic...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428365
..., from which we then derive densely sampled surveys through the method of wavefield reconstruction. Because of their relatively cheap and simple calculations, wavefield reconstruction via matrix factorizations has proven to be a viable and scalable alternative to the more generally used transform-based...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428418
... Presentation Type: Poster reservoir characterization upstream oil & gas symplectic algorithm physics difference operator social responsibility hamiltonian seg international exposition matrix equation sustainable development high order mimetic difference exploration geophysicist 10 order...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427730
... inversion lrwi requirement herrmann minima rank-2 matrix matrix search space Lift and Relax for waveform inversion Zhilong Fang1,3, Laurent Demanet1,2,3 1Department of Mathematics, Massachusetts Institute of Technology 2Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427818
... seg international exposition matrix reconstruction influence function Making seismic reconstruction more robust via a generalized loss function Fernanda Carozzi and Mauricio D. Sacchi, University of Alberta. SUMMARY lows to control the shape of the loss function and, therefore, its resistance...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427933
... variables, arranged as a moment matrix. This algebraic idea is a celebrated way to replace a hard polynomial optimization problem by a semidefinite programming approximation. Concretely, both the model and the wavefield are lifted from vectors to rank-2 matrices. The second technique (Relax) invites to...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426849
... regular spaced grid. In this case, the linear system has a specific configuration known as symmetric Block-Toeplitz Toeplitz-Block (BTTB). A BTTB matrix can be stored using only its first column and can be embedded in a symmetric Block-Circulant Circulant-Block (BCCB) matrix, that also only need its first...

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