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Keywords: forward model
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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-2021-3594593
... widely used for log data and constrained by forward model. GAN workflow seismic inversion due to the availability of computational was effective in acoustic impedance inversion although, the resources. However, having the capability to perform need of labelled data could not be circumvented. complex non...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426726
... investigate an option to include internal multiple scattering in the forward model of LSRTM, while still using a smooth background model. This is achieved by introducing two-way scattering sources from the concept of Full Wavefield Migration, which will generate the higher-order scattering due to the imaged...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215902
... to invert seismic data for acoustic impedance. The proposed workflow uses well log data to guide the inversion. In addition, it utilizes a learned seismic forward model to regularize the training and to serve as a geophysical constraint for the inversion. The proposed workflow achieves an average...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2998133
...-size and permeability or has the signal been contaminated by background magnetic field inhomogeneity? To address this uncertainty, we investigate if an updated surface NMR forward modelling scheme, which involves solution of the full Bloch-equation, can provide the ability to better constrain the link...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2995723
... intelligence regularization equation inversion harlan basis function forward model reflectivity Babuška , I. , J. R. Whiteman , and T. Strouboulis , 2011 , Finite elements: An introduction to the method and error estimation : Oxford University Press . Becker , E...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2996356
... formulation relative change saturation landrø porosity forward model seismic data time-lapse seismic data inversion p-wave velocity pressure change rock physics model saturation change water saturation reservoir property variation coefficient upstream oil & gas approximation reservoir...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17746546
... frequency carbonate reservoir low frequency annual meeting data quality reservoir characterization broadband seismic data amplitude frequency forward model hydrocarbon detection upstream oil & gas seg seg international exposition avf response wavelet transform Cao , M. , et...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17794146
... method forward model nonlinear inversion method receiver seg seg international exposition migration hybrid approach Berkhout , A. J. , 1982 , Seismic migration, imaging of acoustic energy by wave field extrapolation, A: theoretical aspects ( 2nd ed .): Elsevier . Berkhout...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17588921
... ABSTRACT The goal of seismic reservoir characterization is to estimate rock and fluid properties from seismic data. The solution of the seismic inverse problem is based on the forward models that describe physical relationships between lithology and fluid parameters and their seismic response...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13973012
... simulated conditions in Section III. Finally, we conclude the paper in Section IV. Theory A forward model is designed to simulate a geosteering tool while it generates a set of data based on physical modeling. The number of elements in data set represents the number of curves which we implement...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5911966
... In this study, two different method were used to compute the dispersion curves and compared to the result to the forward model. One use of these method is the MASW (Xia et al., 2000) method, which has been gaining popularity since it was introduced. This method is use in estimating the near-surface elastic...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5923846
... be described as a so-called closed-loop process (shown in Figure 1): the measured data is firstly imaged, where the downgoing wavefield computed by the forward model and upgoing wavefield computed by a back-propagation of the residual are cross-correlated at every gridpoint of the subsurface. The resulted...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5889102
... that otherwise would not be captured using traditional geometrical restoration and forward modelling methods. As in 2D space, the expression of trishear in 3D is controlled by user-defined parameters including the magnitude of displacement, the propagation/slip ratio, the angle of the trishear zone...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5858788
... seismic, called shot repetition, which can overcome this requirement. Shot repetition refers to activating a broadband source more than once at the same location. We extend the general forward model of source blending to include the case of shot repetition. By exploiting the repetitive shots acquired...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5875226
.... Different from the current deghosting theories, we here propose a coding-based method that can remove most of the receiver-ghost effects from conventional streamer data. A novel forward model for receiver-ghost prediction is first built by coding the upgoing wavefields with automatically estimated coding...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1340
... model is to be used in practice. fracture normal stress hydraulic fracturing likelihood function effective diffusion microseismicity effective diffusion flow forward model rock failure propagation diffusivity seg denver 2014 shear stress effective stress upstream oil & gas...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0148
....). netherlands fracture orientation north beck house upstream oil & gas forward model seg denver 2014 mcss stress analysis proxy permeability prediction fracture hydraulic signature fracture characterization fracture density reservoir characterization lincolnshire orientation interpretation...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0834
.... The forward model is non- linear, comprised of a non-linear greensand rock physics model and a non-linear AVO waveform model. The rock physics model is based on a Hertz-Mindlin grain contact model combined with the Gassmann equation for fluid substitution. The inverse problem is parametrized as a 3-layer...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-0695
... & gas geophysics berkhout geometry wavefield well trajectory vsp data reservoir characterization inversion scheme depth level equation reflectivity full wavefield migration imaging vsp imaging vertical seismic profile migration forward model VSP imaging using all multiples: Full...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-0830
... on top of each component of the gravity gradient tensor show strong correlations useful for mapping structural elements of the dome. Interpretations of the Vinton salt dome are used to construct a detailed subsurface salt model. Forward models of the main counter regional fault and the caprock...

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