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Keywords: coefficient matrix
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Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3908599
... coefficient matrix american association geologist acoustic impedance block coordinate descent international inversion large-scale matrix introduction matrix geophysics exploration geophysicist applied geoscience Acoustic impedance multi-channel inversion constrained by spatial reflection...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3586923
... the problem often as underdetermined. Multimineral analysis is one effective tool used to estimate these volumes and the petrophysical properties, where the uncertainty in estimation is related to the coefficient matrix relating volumetric fractions of the individual constituents to the measured log response...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3214907
... of the coefficient matrix of a system of linear equations. The advantages of the method are revealed for large numbers of seismic shots to be processed. A low rank approximation is used to lessen the memory consumption requirements. MPI parallelization is used to overcome memory and performance issues. Presentation...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997978
... aem forward modeling earth model aem response basis function modeling seg international exposition integration meshfree method relative error subdivision accuracy forward modeling mesh subdivision reservoir characterization coefficient matrix conductivity numerical integration...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13514215
..., a two-term approximation which only relates to density and S-wave velocity is proposed based on Aki-Richards approximation. For AVO inversion, the contribution rate of target parameter, condition number of the parameter coefficient matrix and the correlation between the parameters jointly decide...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5856116
... accuracy by optimizing the spatial operator to fit an analytical counterpart in the wavenumber domain. The disadvantage of the ETE method is that coefficients of stencil points vary over the velocities of center points. In implementation, a coefficient matrix and an array of velocity parameters...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-0866
... the effectiveness of this scheme for frequency domain modeling. infinite coefficient matrix reservoir characterization seismogram boundary condition frequency-domain modeling wave modeling frequency domain geophysics reflection equation main menu absorption acoustic model wave equation...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-0353
... coefficient matrix tbie method receiver Synthetic multipole sonic logs and normal modes for a deviated borehole in anisotropic formations Pei-cheng Xu*, Datatrends Research Corp., Canada, and Jorge O. Parra, Southwest Research Institute, USA Summary Robust techniques are needed to extract the rock...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-0676
... the least squares method. Furthermore, I propose two types of thresholds that help remove erroneous estimates. One is applied to the condition number of the coefficient matrix and the other to the probable relative errors in estimates of two intermediate parameters related to depth and horizontal location...
Proceedings Papers

Paper presented at the 1999 SEG Annual Meeting, October 31–November 5, 1999
Paper Number: SEG-1999-0374
... of equations involving a dense coefficient matrix. Unfortu- nately, the solution becomes prohibitively expensive for large problems. We have developed a fast algorithm by using fast wavelet transforms based on orthonormal, compactly sup- ported wavelets. The coefficient matrix is treated as a four- dimensional...
Proceedings Papers

Paper presented at the 1996 SEG Annual Meeting, November 10–15, 1996
Paper Number: SEG-1996-1239
... ABSTRACT No preview is available for this paper. geometry coefficient matrix infinite element boundary element method artificial intelligence wave propagation fundamental solution interface medium velocity frequency multiline modeling multisource survey elastic equation...
Proceedings Papers

Paper presented at the 1991 SEG Annual Meeting, November 10–14, 1991
Paper Number: SEG-1991-1369
... matrix vandermond matrix coefficient matrix application polynomial Levinson-Type Algorithms for Hankel and Vandermond Systems with Application to n-Order Spline Milton J. Porsani, PPPG/Federal Univ. of Bahia, Brazil SP2.8 SUMMARY Levinson-type algorithms for polynomial fitting and for comput- ing...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0727
... deconvolution approach ofRobinson (1967) and Peacock and Ikite (MI) is probably the most widely and eucceaafully applied processing tech- nique in the eeiamic ndustry. It ia a technique which ie robust, efficient in computation timeowing to the spa cial Toeplita Btructure of the coefficient matrix which ark...
Proceedings Papers

Paper presented at the 1984 SEG Annual Meeting, December 2–6, 1984
Paper Number: SEG-1984-0822
... ABSTRACT No preview is available for this paper. correlation noise source coupling coefficient matrix phase drift rayleigh wave word length noise simultaneous source equation vibrator sequence upstream oil & gas field record receiver reflection response reservoir...
Proceedings Papers

Paper presented at the 1983 SEG Annual Meeting, September 11–15, 1983
Paper Number: SEG-1983-0185
... ABSTRACT No preview is available for this paper. reflection seismic method sediment seismic reflection method engineering seismic reflection method reservoir characterization mining 2 good reflection reflector observation error experiment coefficient matrix upstream oil...
Proceedings Papers

Paper presented at the 1983 SEG Annual Meeting, September 11–15, 1983
Paper Number: SEG-1983-0188
... ABSTRACT No preview is available for this paper. information density matrix measurement error eigenvalue matrix eigenvector procedure model parameter parameter eigenvector reservoir characterization coefficient matrix determination accuracy thickness observation error...

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