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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-2021-3583419
... method based on dictionary learning is proposed to marine CSEM denoising procedure. Firstly, the segments suffering little from noises are captured as training set. Then the learned dictionary is constructed from the training set via K-singular value decomposition (K-SVD) algorithm. Lastly, the learned...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583272
... by multiple penalty functions imposed on the common model term of the physical domain such as performed in a joint inversion approach. The procedure is complemented by network retraining with partial inversion results to augment the network knowledge base and enable more physics-oriented DL predictions. After...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583248
... training data and therefore remove any requirement of pre-cleaning of field data or the generation of realistic synthetic datasets for training purposes. Through the use of blind-spot networks, we show that self-supervised Noise2Void (N2V) procedure can be adapted to the seismic context, and trained solely...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3580825
... to estimate common rock-physics attributes that highlight the potential presence of a gas-bearing sand reservoir. reservoir characterization applied geoscience velocity model target area target-oriented elastic full-waveform inversion upstream oil & gas expanded abstract geophysics procedure...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581151
... factor Q µ , in regimes with strong surface waves prone to cycle skipping. We present a procedure for their joint reconstruction via spectral-element adjoint-based full-waveform modeling. Starting from a checkerboard example, we develop a frequency and offset continuation strategy for onshore active...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426878
... of hydrate formation during the displacement of live oil with cold seawater. The experimental procedure consists of cooling and injecting steps until hydrate formation is detected from the interpretation of geophysical measurements. The geophysical measurements included elastic waves measured with Tektronix...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427020
... Shale reservoirs, characterized for having an ultra-low permeability, need to be fractured to allow hydrocarbon recovery. This paper shows a numerical fracking model that combines a multiphase flow simulator for fluid injection with a fracking generation criterion. The procedure consists...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3424997
... of data-driven DL based inversion. The two procedures are coupled by the model term. The method involves re-training of the network after each inversion iterations. The coupled inversion schemes are evolving and balancing each other to converge to a common model satisfying the data misfit criteria...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428138
...: Poster log analysis elastic anisotropy correspond exploration geophysicist 10 well logging total porosity porosity procedure argentina effective porosity structural geology information coefficient room pressure oblique plug reservoir characterization anisotropy equation upstream...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3423396
... procedure, rather than being externally and manually labeled. In the beginning of the workflow, the pseudo-LF or the bandwidth-extension algorithm is implemented to approximately estimate the missing LF components, which are then injected into an FWI engine to reconstruct a velocity model. A forward...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427000
... Manual seismic horizon interpretation is the least efficient interpretation technique in terms of time and effort. Auto-picking techniques have been around since the early 1980s. However, there are few studies regarding simulating the procedure of manual seismic horizon picking. In this paper...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426563
.... We located over 3700 events with down to a magnitude of −1.79. The processed data set provided an interpretable catalog including moment tensors to help evaluate the performance of the fracture treatment. This procedure can provide a model of how to optimize monitoring budgets to deliver results...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426610
... PM Location: Poster Station 12 Presentation Type: Poster fpd effect boundary holliger standard deviation upstream oil & gas relative difference procedure fracture connectivity frequency effective velocity seg international exposition rubino reservoir characterization...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3420478
... exploration conditional gan procedure pore structure distribution map pore structure analysis exploration geophysicist 10 intelligent analysis core slice image seg international exposition structure distribution map Intelligent analysis of pore structure for oil reservoir based on Conditional GAN...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3421261
... presents a finiteelement (FE) procedure to determine an effective viscoelastic medium long-wave equivalent to a thermoelastic material, by applying compressibility and shear tests. Each test is defined by a boundary-value problem and the procedure is validated by comparison with an analytical solution...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3422645
... artificial intelligence outlier procedure guideline algorithm seismic attribute first break random sample consensus ransac machine learning information exploration geophysicist 10 seg international exposition dataset fb pick Line-guided FB picking via RANSAC Line-guided first break picking...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-W06-03
... procedure. This is also the basic idea of Full Wavefield Migration: explain all physical reflection arrivals in the data by the subsurface model. Both primaries and multiples are utilized in this process, such that we maximize the information enclosed in the data. Especially when we are far away from...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3214166
... seismic anisotropy parameter inversion equation anisotropy parameter procedure upstream oil & gas inverted anisotropy parameter Grechka , V. , and I. , Tsvankin , 1998 , Feasibility of nonhyperbolic moveout inversion in transversely isotropic media : Geophysics , 63...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216758
... ABSTRACT Full-waveform inversion is an iterative data-fitting procedure used to resolve complex subsurface elastic property models. It has the potential to become a tool for quantitative interpretation at stratigraphic and reservoir scales. To illustrate, we make use of a geologically modeled...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3214990
... layer at the top and a salt layer at the bottom. Our numerical examples demonstrate that the layer-stripping approach helps to improve convergence. Since this is a rather inexpensive procedure which starts at no a-priori knowledge of the medium, it can be used to build initial models for more...

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