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Keywords: depth migration
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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-2021-3583611
... data depth migration iteration algorithm applied geoscience time migration seafloor tomography complexity noise attenuation upstream oil & gas well data expanded abstract offshore nova scotia case study Offshore Nova Scotia seismic data reprocessing: a case study Elena Dutcher...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584082
... depth migration technology, and recovered well. The influence of gypsum-salt rock on the deformation of the underlying strata, the structural morphology of the sub-salt carbonate rock has been restored, the imaging quality has been significantly improved, and the well-seismic coincidence is higher...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3586537
.... Thus, we can further reduce the number of backpropagation operations needed for imaging and only consider the relevant data required to form a good image. upstream oil & gas depth migration geophysics beam axis propagator inhomogeneous media propagated field exploration geophysicist 10...
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
...Time-domain anisotropic Gaussian beam prestack depth migration using optimized ray tracing system Qiang Liu*, Zhenchun Li, China University of Petroleum (East China); Jian-en Xiao, Sinopec Geophysical Research institute; Kai Zhang, Xuecheng Xu, China University of Petroleum (East China) Summary...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581319
... At present, there are mainly two kinds of seismic wave prestack depth migration imaging methods: the integral method based on the high frequency approximation solution of wave equation and the finite difference numerical solution or mixed domain solution based on the differential wave equation...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425150
... For the anisotropic prestack depth migration, estimation of anisotropic velocity and parameter is a key technology. At present, the traditional time-depth conversion method can be used to obtain anisotropic parameters, this method is used by checking the depths obtained against the well markers...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427615
... migration (SBM) is used to estimate velocity changes within the depressions in order to provide better imagery between the near-surface dissolution and the underlying fault and fracture network. A method is presented that integrates FTG data into the depth migration workflow in order to pave the way towards...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427469
... waveform inversion gaussian beam migration reverse time migration schuster neural network depth migration geophysics inversion © 2020 Society of Exploration Geophysicists 10.1190/segam2020-3427469.1 SEG International Exposition and 90th Annual Meeting Page 3073 © 2020 Society of Exploration...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427494
... In the prestack depth migration, obtaining a high-quality seismic image requires an accurate common image gather (CIG) where the diffractions are focused, the reflection events are flat and the depth of the events are correctly migrated. In practice, such an accurate CIG, however, is hard...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425531
... in the carbonate formation showing the pulling-up phenomenon in the time migration section, and the structural form is distorted. As a new research block, there is no drilling data to correct. It can’t solve the problem only by grid tomography modeling and depth migration. This is a great challenge...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426673
... geophysicist 10 reflectivity depth migration srme seg international exposition full wavefield migration fwm balder formation kirchhoff psdm surface xwd Full Wavefield Migration based de-multiple of West of Shetland data A case study Chandan Kumar, Kanu Chinaemerem and Jim Mika Summary Method...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426155
... In the exploration area of western China, the pre-stack time migration technology has been unable to adapt to complex surface and geological conditions. Pre-stack depth migration technology has been proven to be the only solution to seismic imaging in the area. Traditional prestack depth...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3420043
.... This work ensured that the resultant velocity depth model was very detailed and leveraged all the information from the three azimuths. A final Q-Kirchhoff depth migration and reverse time migration products were performed to improve the imaging of the complex structures at depth, and so aid interpretation...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3410422
... resolution of the conventional Kirchhoff’s depth migration. The data processing examples by RTH method for three types of spatial pixel size starting from 2 meters are presented. The new voxel-based classification of the seismic imaging methods based on the essence of formal operations on wave information...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3211780
... ABSTRACT Surface consistency becomes invalid where the elevation is fluctuant and the lateral velocity varies greatly. Therefore the signal-to-noise ratio becomes low and the moveout between traces becomes large, which deteriorates the image of prestack depth migration. To solve this problem...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3206213
... objective. Presentation Date: Monday, September 16, 2019 Session Start Time: 1:50 PM Presentation Start Time: 2:40 PM Location: Poster Station 11 Presentation Type: Poster inversion upstream oil & gas accuracy south china sea depth migration reservoir characterization velocity field...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2989842
... ABSTRACT Amplitude versus Offset (AVO) is a methodology aimed at de-risking the detection of fluids from seismic data. Usually in the past, AVO studies were performed in time domain. However, the advancements in the Pre-Stack Depth Migration processing workflows allow amplitude control...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2996209
...Modelling intra-salt layers when building velocity models for depth migration. Examples of the Santos Basins, Brazilian offshore Alexandre Maul, Josué Fonseca, Leonardo Teixeira, Pablo Barros, João Boechat, João Paulo Nunes & Thiago Yamamoto, Petrobras; María González & Gerardo González, Emerson...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2996015
... digital wavelet transform kirchhoff migration depth migration gaussian beam depth migration gaussian beam migration wavelet migration data quality compression upstream oil & gas signal-to-noise ratio beam trace imaging beam migration coefficient velocity model seg...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997996
...: Poster near-surface model velocity model turning-ray tomography topography iteration study area reflection tomography tomography reservoir characterization annual meeting application joint tomography prestack depth migration seg 10 velocity-depth model imaging upstream oil...

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