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Keywords: migration velocity
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Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4072851
...) follows the logic of image deblurring and the key problem is to calculate a reliable Hessian matrix that can be effectively replaced by a set of point-spread-functions (PSFs). The PSFs calculation depends on forward/migration operator, acquisition geometry, migration velocity, and source signature. Due...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427091
... information in the extended the SOCIGs in both cases when migration velocity is accu- domain. LSERTM has been actively studied for surface seis- rate or not. The SOCIGs are then transformed into ADCIGs mic data in academic research, but it is never reported with ap- through slant stack (Sava and Fomel, 2003...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215353
...: Poster interpretation anisotropy converted-wave reflection seismology reservoir characterization model building wave velocity model building imaging eff pre-stack time migration migration anisotropic media seg international exposition migration velocity accuracy upstream oil...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215424
... ABSTRACT We propose a probabilistic method for imaging seismic diffractions based on path-integral imaging. The method utilizes oriented velocity continuation to generate a suite of slope decomposed diffraction images with different migration velocities. Treating each partial image in slope...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215565
... Session Start Time: 1:50 PM Presentation Start Time: 1:50 PM Location: Poster Station 11 Presentation Type: Poster imaging condition migration velocity anisotropic media velocity model upstream oil & gas adcig geophysics angle gather annual meeting reservoir characterization...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215960
... migration odcig amplitude reflection coefficient adcig biondi migration velocity Aki , K. , and P. G. , Richards , 2002 , Quantitative seismology : University Science Books . Albertin , U. , D. , Yingst , P. , Kitchenside , and V. , Tcheverda...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216529
... ABSTRACT High-fidelity imaging of high-angle faults in the subsurface is a challenging topic in seismic imaging industry even if we were given the correct migration velocity and accurate reverse time migration (RTM) operator. Here, we show a simple modified RTM method to image the vertical...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2998399
... ABSTRACT Poynting vector based reverse time migration () can migrate seismic data into angle-domain common-image gathers (). The quality of common-image-gather is related to the used migration velocity. However, in the seismic data processing, we usually cannot obtain a very accurate depth...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2998346
... underlying the igneous rocks. This paper proposes a quantitative identification method to remove the pseudo faults and to establish the correct velocity model for igneous rocks by using seismic data, well log data and depth migration velocity field to match with the geological conditions. In forward modeling...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17791610
... ABSTRACT This research demonstrates a unique method to derive migration velocities in the near-surface. Joint Analysis of Refractions and Reflections (JARR) uses an a-priori reference model derived from seismic reflection normal-moveout (NMO) correction analysis to constrain a first arrival...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17687190
... seismic images: a) broaden the linear bandwidth during acquisition by applying DSAs (dispersed source arrays), b) add the missing ultra-low frequency information (trend) from migration velocities, indispensable for impedance images, and c) add the missing ultra-high frequency information (detail) by data...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17559486
... estimation shallow sand larsen landrø subsurface blowout sand layer shallow gas migration rate operational safety migration velocity reservoir characterization migration rate annual meeting deep sand dinh gas movement blowout gas migration rate upstream oil & gas Summary We use time...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13680101
... international exposition reservoir characterization vertical fault plane internal multiple upstream oil & gas procedure imaging migration velocity gimi procedure generalized interferometric multiple imaging migration artifact scatterer least-square gimi image ABSTRACT The generalized...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13820152
... reservoir characterization reflection imaging dip-angle domain relation reflector kinematic artifact seg seg international exposition migration velocity Almomin , A. , and B. Biondi , 2014 , Preconditioned tomographic full waveform inversion by wavelength continuation : 84th...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13819899
... velocity error kinematic artifact migration velocity reservoir characterization artifact mechanism operator annual meeting elliptic curve data truncation kinematic artifact seg seg international exposition scattering-angle cig impulse response subsurface upstream oil & gas...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5932503
... csp gather upstream oil & gas thais guirigay obliquity diffraction university prestack migration velocity helen isaac elevation reservoir characterization prestack migration migration resolution equation seismic data nassir saeed bancroft migration velocity correction cmp...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5848366
... present for a narrow range of incident angles (i.e., <30°), and (2) in the presence of migration velocity error, residual curvatures of subsalt events are often degraded due to interference caused by wavefronts propagating from different surface offsets. The degradation resulting from offset...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5845017
... for reflections as well as for diffractions. In order to further exploit this latter property, we have developed an i-CRS diffraction summation migration technique for the prestack case. An advantage of the method is that no additional velocity modeling is necessary because the migration velocity is calculated...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1471
... Summary We perform seismic diffraction imaging and velocity analysis by separating diffractions from specular reflections and decomposing them into slope components. We image slope components using extrapolation in migration velocity in timespace- slope coordinates. The extrapolation...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0497
... and in the case of imaging the fault plane using inaccurate migration velocities. vertical fault plane assumption single-scattered seismic data reflector internal multiple reservoir characterization upstream oil & gas inversion migration artifact seismic data doubly-scattered data migration...
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