1-20 of 79
Keywords: migration method
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/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583658
... workflow (conversion of 1C DAS to 1C geophone) is to be considered to reduce migration artifacts in such configuration. vertical seismic profile migration artifact receiver upstream oil & gas wavefield migration method domain correction reservoir characterization image domain correction...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3579780
.... Meanwhile, the dynamic ray interpret anisotropy better and calculate the amplitude of the tracing correlation coefficients is optimized to speed up the phase-velocity vector accurately. Then, an efficient time- algorithm. The above-mentioned techniques lead to a more domain Gaussian beam migration method...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215934
... ABSTRACT A robust joint seismic migration method for vertical seismic profile (VSP) data is presented. The joint imaging method is based on the inverse generalized Radon transform (GRT) algorithm and can handle the migration of the primary and free surface-related multiple reflections...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2986180
... ABSTRACT Seismic anisotropy is widespread in real media, the conventional isotropic reverse time migration method will lead to problems such as inaccurate depth and unfocused energy in dealing with the anisotropic issues, and low frequency noise with strong amplitude in imaging results can...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2995648
... good resolution and correct AVA curves for further interpretation. Conventional Q compensation methods (pre-/post-migration) usually over-simplify geological structures or Q models. On the other hand, although Q compensating migration methods are highly accurate in handling complex structures...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997700
... traveltime tomography and refraction traveltime migration method using various synthetic models. Our goal is to assess the effectiveness of these methods in the areas with near surface velocity reversal. The test results suggest all three methods can recover reasonable statics solutions if the shallow...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997663
... ABSTRACT First-arrival traveltime tomography is routinely applied for imaging near surface structures. However, it tends to produce a smooth velocity model. In this study, we first develop a multi-layer refraction traveltime migration method, and then apply the migration image to constrain...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17748342
... ABSTRACT We introduce a dual sensor seismic acquisition system. Equipped with this data acquisition and combined achievements of one-way wave propagators, we develop a dual sensor migration method. Because this new algorithm is based on the two-way wave equation, it can deal with wide angle...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17784079
... for heterogeneous media (Weglein et al. 2016) addresses this problem as the first migration method that is equally effective at all frequencies at the target and reservoir. That allows the broadband lower frequency data to provide full benefit for improving structural resolution and amplitude analysis. Q. Fu et al...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13950795
... the information in the newly acquired lowest frequency components in the broad band data, and (2) we address that problem, with the first migration method that will be equally effective at all frequencies at the target and reservoir, and will allow the broad band lower frequency data to provide improved structure...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5923800
... migration method information application anisotropy azimuth characteristic orthorhombic anisotropy algorithm traveltime formula anisotropic parameter reservoir characterization traveltime inversion cig full-azimuth orthorhombic migration orthorhombic migration migration upstream...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5749505
..., Gaussian packet migration also make great progress (Zacek et al, 2006; Geng et al, 2011; Li and Wang, 2013), but it needs complex mathematics transformation and is difficult to implement. time-space gaussian beam noise china university gaussian beam prestack depth migration method reservoir...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1317
... Summary Borehole dipole shear reflection imaging has attracted widespread attention in the evaluation of heterogeneous reservoirs in recent years due to its good performance in reflection amplitude, detecting depth and directivity. However, the conventional migration method based on one-way...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0217
... are often irregular and sparse, and topographic variations are large. Derived from the Maslov solution to the wave equation, the new method is shown to be a true-amplitude extension of the phase-shift wave-equation migration method into media with lateral velocity variations. Test results show that the new...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0318
... & gas velocity anomaly velocity model migration method carbonate fracture-cave imaging seg houston 2013 migration reflection imaging time migration accuracy algorithm string bead convergence Analysis of Factors Affecting Carbonate Fracture-cave Imaging Wang Xiaowei*, Yuan Gang, Tian...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-0755
... algorithm receiver reference list extrapolation method reservoir characterization migration angle gather crossline migration method geophysics ehinger shot record migration implementation geometry 3D Wave Equation Kirchhoff Migration John T. Etgen* BP Summary Ehinger et al. (1996) described...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-1007
..., these gathers are potentially suited for velocity model building. We provide the mathematical details of the method and we demonstrate its validity on synthetic examples. reflector migration surface rtm cig seismic data geophysics upstream oil & gas main menu surface migration method image...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-1170
... Summary One-way prestack depth migration method for multi-component data is presented here using elastic generalized-screen propagator. The propagator stemmed from generalization of phase-screen and split-step Fourier method with the aid of pseudo-differential operator whose symbol treats...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-3340
... maintaining the same image quality. operator migration accuracy onadm migration method reverse-time migration grid point reverse time migration result upstream oil & gas wave displacement numerical dispersion wave equation fourth-order lwc yang equation geophysics reservoir...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-1547
... in Argentina. As a result, the picking-based method using the S-wave polarization doubled the number of located event compared to the conventional method; the pseudo-migration method multiplied by ten the size of the located dataset. The reliability of the result interpretation increased with the number...

Product(s) added to cart

Close Modal