1-20 of 30
Keywords: regularization parameter
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216830
... at practically no additional cost if a migrated image is available. Presentation Date: Monday, September 16, 2019 Session Start Time: 1:50 PM Presentation Start Time: 3:55 PM Location: Poster Station 12 Presentation Type: Poster regularization function regularization parameter reservoir...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2998355
...) Presentation Type: Oral objective function regularization neural network machine learning lithology estimation artificial intelligence regularization parameter validation spectral ip data mineralized rock upstream oil & gas step length average data misfit curve seg international...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2998403
...: Wednesday, October 17, 2018 Start Time: 1:50:00 PM Location: 213B (Anaheim Convention Center) Presentation Type: Oral annual meeting voxel oldenburg noise estimate magnetic inversion just right data misfit regularization parameter inversion innovative tool workflow geological modeling...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17782581
... are incorporated via the use of an iteratively reweighted least squares scheme. Moreover, an automatic determination process of optimal regularization parameters is proposed. Numerical experiments show that the use of general measures ensures high-fidelity data-fitting and provides a way to emphasize certain...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17696323
... ABSTRACT In exploration geophysics, AVO inversion is one of the most common inverse problems, which is ill-posed and usually be solved by regularization. However, once regularization is used, the selection of regularization parameter will become a critical problem to be solved. In practice...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13872436
... Start Time: 11:35:00 AM Location: 162/164 Presentation Type: ORAL regularization parameter alejandro valenciano annual meeting regularization term inversion optimization problem full waveform inversion steerable variation regularization upstream oil & gas fwi machine learning...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5922589
... objective function northern finland fcm upstream oil & gas algorithm initial model artificial intelligence koivisto malehmir machine learning seismic section seismic inversion inversion regularization parameter weighting value constraint inversion process Incorporating prior...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5932246
..., the regularization parameter can be space-varying. So this is suitable for severely variational regions. And we also find that source normalized cross-correlation imaging condition is more suitable in Q-RTM. Introduction It has been broadly observed that real earth media attenuate and disperse seismic waves...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5903779
... basement relief application grid gravity inversion structural geology node lanczo bidiagonalization method iteration geophysics equation upstream oil & gas anomaly inversion prism parallelization sedimentary basin matrix reservoir characterization regularization parameter...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5881206
... information is added into least- squares reverse time migration (LSRTM) as the regularization term. The dynamic regularization parameter and scaling method to the regularization-term gradient is highlighted to ensure better constraint. To test the improvement of prior information to the inversion, LSRTM...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5921658
... geology ascher gauss newton method computational cost inversion reservoir characterization mcsem data regularization parameter gn iteration upstream oil & gas algorithm salt dome structure 3D inversion of MCSEM data 3D inversion of marine controlled-source electromagnetic data using...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5796261
... weighting factor reconstruction interpolation poc method noise simultaneous interpolation threshold sacchi regularization parameter spectrum random noise upstream oil & gas china yanfei wang reservoir characterization seismic data interpolation weighted poc method data...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0954
... itself, are treated as problem unknowns. Hence, rather than fixing the regularization parameters prior to inverting for the image, we allow the data to dictate where and how strongly to smooth the image. In order to construct our prior model of the subsurface and regularization parameters, we define...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1260
... scheme for FWI. The salient features of our algorithm include an efficient approach to constrain the sharp interfaces of the model discontinuities through the total variation (TV) regularization and a novel approach to adaptively compute the regularization parameter. TV regularization accomplishes...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0156
... pre-stack seismic data initial model seg denver 2014 regularization simultaneous inversion regularization parameter inversion zoeppritz equation simultaneous inversion result reservoir characterization seismic data neighborhood inversion result potential function edge-preserving...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0687
... a hierarchical Bayesian generalization of the Kirchhoff-based least-squares migration (LSM) problem. We present here a novel methodology for estimation of both the optimal image and regularization parameters in a least-squares migration setting. To do so we utilize a Bayesian statistical framework that treats...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-1459
... magnetic latitude ore body magnetic amplitude inversion amplitude inversion regularization parameter inversion amplitude data magnetization direction magnetization deposit magnetic data upstream oil & gas Application of 3D magnetic amplitude inversion to Fe oxide Cu Au deposits at low...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-0882
... regularization parameter deconvolution synthetic noise fourier transform transfer function synthetic model study density function evaluation algorithm optimum value density function approximation horizontal circular plate c-norm function model study upstream oil & gas density...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-0910
... seismic joint inversion quasi-optimal value solid line algorithm resistivity regularization parameter seismic data velocity distribution upstream oil & gas university inversion reservoir characterization seg seg denver 2010 regularized synchronous joint inversion zhdanov...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-1464
... algorithm formulated as a regularized inversion using Tikhonov regularization in the Fourier domain. We will discuss the details of the algorithm such as the choice of spectral weighting and determination of regularization parameter. We will use a synthetic data set to illustrate the algorithm and its...

Product(s) added to cart

Close Modal