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Keywords: imaging
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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-2021-3583800
... in this area are very thick, and multi-stage high-speed volcanic rocks are well developed, leading the seismic of buried hill has poor quality with low has low SNR, bad imaging. This is the main reason why the buried hill exploration failed to achieve a major breakthrough. On the other hand, early exploration...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3582815
... We have applied U-Net, a classic structure in deep learning, to image metallic deposits models, which achieves impressive results with effective computation. Due to the steep small-scale metallic body, the simulated data have strong diffraction waves, which hardly imaging the model...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583389
... mesh on top of the soil. The wire mesh, as part of the infrastructure, imposes significant difficulties in the imaging of DNAPL. First, the inversion, as used in the conventional ERT data processing, cannot properly image the thin and highly conductive wire mesh. Second, the wire mesh creates a short...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583353
... We develop a novel approach for imaging subsurface lateral heterogeneities using six-component (6C) ambient seismic noise data, which consists of three translational components and three rotational components. We first derive the 6C cross-correlation functions (CCFs) from ambient seismic noise...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583430
... to achieve better seismic imaging through nonuniform sampling, the effect of μ on seismic data migration imaging is analyzed. The results show that μ can be used to evaluate the quality of data imaging, but influenced by some factors, e.g. point quantity,iteration number, etc. In addition, these analysis...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583368
... can’t meet the need of the high quality imaging. The full azimuth local angle domain gathers retain not only the moveout variations with incident angle but also the azimuthal moveout variations, so the RMOs of different azimuth can be matched with the ray tracing of different azimuth. Therefore...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583371
... Shear wave (S-wave) velocity model building (VMB) is a critical and difficult step in converted-wave imaging (PS imaging). Conventional S-wave VMB depends on PP-PS joint interpretation-based image registration and PP-PS joint tomography-based residual moveout (RMO) flattening. Recently...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583452
... the underground interfaces, and reverse time migration can realize the correct imaging of multiples, a joint imaging method of primary and internal multiples is studied in order to reduce the calculation cost of multiple suppression and improve imaging accuracy. Firstly, the imaging condition for the data...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583965
... In this study, we illustrate examples of complex imaging challenges from the Asia Pacific area, with a complex sea bottom overlaying thin and thick basalt layers. The subsurface geology is complex and for optimal imaging, there is a requirement for advanced, systematic, and sequential solutions...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583875
... overburden structures including carbonate layers in the post salt and stratified salt, high-resolution imaging is critical to better understand the producing fields and to facilitate development of others. High-resolution imaging relies on adequate illumination, seismic data with sufficient resolution...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3585025
... reservoir characterization angle gather migration rtm angle gather upstream oil & gas imaging geophysics prestack image acquisition image gather applied geoscience wavefield inversion configuration different well location equal area spherical cylindrical coordinate...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584248
... improvement in subsalt The western part of the Gulf of Mexico (WGOM) is often imaging in the last few years (Wang et al., 2019; Nolte et al., characterized by large and complex salt and shale bodies, 2019). However, OBN has mostly been used for making it notoriously challenging to image deep subsalt...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594126
... It has been shown that Geometric-mean Reverse-Time Migration (GmRTM) can produce source images with improved resolution than conventional time-reversal imaging in acoustic media. Here, we extend this cross-correlation-based imaging method to elastic media. Back-propagation and Helmholtz...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594116
... Geometric-mean Reverse-time migration (GmRTM), a powerful crosscorrelation-based imaging method, generates higherresolution source images and is more robust to noise compared with conventional time-reversal imaging. The price to pay is the requirements of more accurate velocity models and much...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594224
... imaging of shallow exploration targets and geohazards. At the same time, the improved near offset sampling was achieved without compromising acquisition efficiency. reservoir characterization applied geoscience sub array configuration penta source source array acquisition configuration source...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594691
... volume from all available VSP data in the 3D imaging and enhance surface seismic data processing surface seismic survey area. The anisotropic Q-PSDM significantly. Seismic imaging and time-lapse reservoir results show much sharper and focused faults and clearer monitoring can give us critical reservoir...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594502
...Imaging source cloud in hydraulic-fracturing using wavefield back-propagation methods Bin Lyu1, Tong Bai1, Isao Kurosawa2, and Nori Nakata1 1Massachusetts Institute of Technology, 2Japan Oil, Gas Metal National Corporation SUMMARY locations by minimizing the objective function (e.g., Waldhauser...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594582
...Application of 2.5D multifocusing seismic imaging in a crystalline rock environment: results from Larder Lake area, Ontario, Canada Hossein Jodeiri Akbari Fam and Mostafa Naghizadeh, Laurentian University; Oz Yilmaz, Anatolian Geophysical SUMMARY vanced imaging algorithms require an accurate...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3576450
... and electrical resistivity imaging was also used to delineate drainage tile network and resolve soil structures. Results of this study will improve further pre- and post restoration hydrological and biogeochemical assessments of these fields. applied geoscience agricultural field exploration geophysicist...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3569087
... sampled and not replicated to reduce costs. As a result, images obtained for different vintages (baseline and monitor surveys) often contain artifacts that may be attributed wrongly to time-lapse changes. To address these issues, we propose to invert the baseline and monitor surveys jointly. By using...

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