Results 241 to 250 of about 212,366 (287)
Some of the next articles are maybe not open access.
Unconstrained Multi-Parameter AVO Inversion
67th EAGE Conference & Exhibition, 2005F015 Unconstrained Multi-parameter AVO Inversion Summary 1 PENGYUAN SUN YANPENG LI XIULI LU EAGE 67 th Conference & Exhibition — Madrid Spain 13 - 16 June 2005 BGP of CNPC Zhuozhou China The use of seismic data for estimation of lithology and reservoir properties is important in seismic exploration and reservoir characterization.
P. Sun, Y. Li, X. Lu
openaire +1 more source
An inverse scattering framework for direct multi‐parameter geo‐radar inversion
SEG Technical Program Expanded Abstracts 2008, 2008We present an inverse scattering formulation of the reflection georadar inverse problem. Our aim is to begin to connect to geo-radar the same direct, multi-parameter, and multi-dimensional tools that underpin the migration-inversion and inverse scattering series methods of reflection seismology.
K. A. Innanen, P. S. Routh
openaire +1 more source
Adaptive eigenspace for multi-parameter inverse scattering problems
Computers & Mathematics with Applications, 2019zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Marcus J. Grote, Uri Nahum
openaire +2 more sources
Robust Frequency-domain Multi-parameter Elastic Full Waveform Inversion
72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010, 2010Elastic full-waveform inversion is an ill-posed and highly non-linear data-fitting procedure that is sensitive to noise, inaccuracies of the starting model and the definition of multi-parameter classes. In this study, we investigate the performances of different minimisation functionals, such as the least-square norm (L2), the least-absolute-values ...
Brossier, R., Operto, S., Virieux, J.
openaire +2 more sources
Multi-parameter Calibration Algorithm Based on 4D Seismic Inversion
2011 International Conference on Intelligence Science and Information Engineering, 2011In order to obtain more reliable gas reservoir information and implement monitoring gas reservoir dynamically, a correction algorithm based on 4D seismic inversion is put forward in this paper. The algorithm uses visualization technology to observe difference between base horizon data and monitor horizon seismic data while using a normalized technology
Kai Xie +5 more
openaire +1 more source
Surface Wave Attenuation Using Elastic Multi-Parameter Full Waveform Inversion
82nd EAGE Annual Conference & Exhibition, 2021Summary One long-standing challenge in land seismic processing is accurate modeling and attenuation of aliased surface waves, which distort signals from deeper structures and lead to poor S/N. We propose a method based on elastic full waveform inversion (FWI) discretized using the spectral element method to model and attenuate surface waves from the ...
L. Ren, Y. Tang, D. Gaines, G. McMechan
openaire +1 more source
Borehole-Constrained Multi-Parameter Full Waveform Inversion
Proceedings, 2015We propose a method that can use a-priori information regarding subsurface properties at a few select spatial locations and over a limited depth range to guide FWI towards a better overall solution without the need to form conventional migration images, pick horizons or determine reflector dips.
openaire +1 more source
Multi-parameter Microwave Inverse Scattering with Group Sparsity Constraints
2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2018We present a multi-parameter inverse scattering method with group sparsity constraint, which improves the image reconstruction results in case the images of different parameters have similar shape or structure. In inverse scattering imaging, the system of equations to be solved is often under-determined where the number of measurements is less than the
Guanbo Chen +2 more
openaire +1 more source
Multi-Parameter ADMM-Based Wavefield Reconstruction Inversion in VTI Acoustic Media
81st EAGE Conference and Exhibition 2019, 2019Full waveform inversion (FWI) is a nonlinear waveform matching procedure, which suffers from cycle skipping when the initial model is not kinematically-accurate enough. To mitigate cycle skipping, wavefield reconstruction inversion (WRI) extends the inversion search space with a penalty method to relax the wave-equation constraint.
Aghamiry, H, Gholami, A, Operto, S.
openaire +2 more sources
Solution of multi-parameter inverse problems of heat conduction
Journal of Engineering Physics, 1991We develop methods and present results for the solution of inverse problems of heat conduction in connection with the simultaneous determination of thermophysical characteristics and heat exchange parameters.
Yu. M. Matsevityi, A. V. Multanovskii
openaire +1 more source