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Keywords: model parameter
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Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583596
... Using a physics-based shear-tensile crack model, we develop a Bayesian approach to simultaneously calculate source mechanisms for a set of microearthquakes and rigorously quantify the uncertainties of model parameters. To that end, we use the normalized displacement amplitudes of direct P-waves...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3593347
... Full waveform inversion (FWI) uses all information in seismic data to estimate high-resolution earth model parameters. It is an ill-posed nonlinear inverse problem that is very computationally demanding and is prone to sub-optimal convergence in local minima. In this work, we address...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594471
..., such as those contained in wells. We have developed a method for EFWI that enforces explicit physical relationships between the model parameters. The underlying assumption is that a strong correlation between the desired physical parameters can be observed from existing data. We have examined constraining...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594236
... Field Research Station in Newell County, Alberta, Canada. The results are consistent with the regional lithology background. upstream oil & gas mode dispersion curve inversion result artificial intelligence posterior distribution model parameter reservoir characterization applied...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594666
... to achieve the spectrum whitening function. Accordingly, the virtual source is computed by summing all of the single-frequency misfits. Based on the adjoint method, the gradients corresponding to model parameters are calculated via frequency-domain gradient formulas, where the phase-sensitive detection (PSD...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3580599
... in the multilayered model, which are substituted into the approximation form for the extension. Note that these effective parameters are not the real model parameters but are reminiscent of the acoustic ORT model parameterization that is used only for the modeling computational purpose. These effective parameters...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581155
... tensor gravity gradiometry (FTG) data collected in the Nordkapp Basin in Barents Sea, Norway. stabilizer constable boundary artificial intelligence data collected model parameter upstream oil & gas imaging barent sea reservoir characterization applied geoscience joint inversion...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3418408
... exploration geophysicist 10 upstream oil & gas ppdf bayesian linearized inversion seg international exposition stochastic inversion result calculation burden model parameter inversion stochastic inversion inversion method seismic data gaussian theory inversion result matrix...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427097
... build a theoretical rock physics model using a conventional RPM workflow. We use Hertz-Mindlin grain contact theory to estimate the moduli of rock frame with optimized model parameters. We then use this rock physics model to create synthetic well logs by perturbing the rock properties, such as lithology...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427199
... inversion covariance matrix exploration geophysicist 10 azimuth upstream oil & gas sayer expanded abstract symmetry hydraulic fracturing vertical fracture phase ii model inversion interface monoclinic avaz inversion reservoir characterization bachrach model parameter seg international...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3424753
... Time: 3:05 PM Location: Poster Station 7 Presentation Type: Poster upstream oil & gas model parameter seg international exposition isotropic background medium machine learning coefficient approximation coefficient frazer reservoir characterization approximation geophysics stova...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3424997
... model parameter seg international exposition dataset workflow inversion joint inversion daniele colombo Physics-driven deep learning joint inversion Daniele Colombo1, Weichang Li2, Diego Rovetta3, Ernesto Sandoval-Curiel1, Ersan Turkoglu1 1Geophysics Technology, EXPEC Advanced Research Center...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425150
... exploration geophysicist 10 seismic horizon upstream oil & gas well marker iteration velocity modeling reservoir characterization welltie tomography method model parameter seg international exposition migrated gather welltie tomography Application of welltie tomography in anisotropic...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428395
... fwime model parameter exploration geophysicist 10 inversion elastic parameter Elastic-parameter estimation by combining full-waveform inversion by model extension and target- oriented elastic inversion Ettore Biondi and Guillaume Barnier, Stanford University SUMMARY employing the FWIME algorithm...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3418400
... approximation acoustic approximation p-wave vertical s-wave velocity s-wave velocity reservoir characterization new acoustic approximation exploration geophysicist 10 artifact media accuracy model parameter alkhalifah vti model equation upstream oil & gas s-wave artifact seg...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428098
... uncertainty estimation neural network seismic data epistemic uncertainty prediction seg international exposition deep neural network exploration geophysicist 10 proceedings artificial intelligence approximation impedance inversion model parameter elastic property inference realization...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427560
... learning reservoir simulation bayesian inference model parametrization multimodal distribution model parameter facies artificial intelligence transdimensional ava inversion inverse problem reservoir characterization upstream oil & gas posterior distribution iteration inversion geophysics...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425261
... arabia government hoteit segmentation mapping artificial intelligence upstream oil & gas joint inversion reservoir characterization deep learning information workflow saudi aramco company general use model parameter inversion electromagnetic inversion exploration geophysicist 10...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426404
... resistivity index model parameter seg international exposition experimental data upstream oil & gas porosity exploration geophysicist 10 reservoir log analysis water saturation formation evaluation determination nuclear magnetic resonance log data well logging geometric mean permeability...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3423752
... method and reservoir simulator. The prior model parameters are then updated to account for the information available from acoustic impedance changes using an iterative ensemble smoother. The outcome is a new ensemble of changes in pressure-saturation and porosity fields that honors the seismic data...

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