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Keywords: inversion
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Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3916045
... of organic-rich fractured reservoirs. We carry out the research on the method for directly predicting the fracture parameters and brittleness indicator in the TTI rock using the amplitude variation with the angle and azimuth (AVAZ) inversion. First, we derive a linearized PP-wave reflection coefficient...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3915238
... Multi-channel AVA (MAVA) inversion performs a crucial role in reservoir prediction since it enhances the lateral fidelity of the inversion parameters. However, it is not perfect because it needs to solve a Tikhonov regularized least squares problem, which tends to produce an oversmooth solution...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3913467
... geology reservoir characterization international indicator upstream oil & gas identification anisotropic media applied geoscience asia government geological subdiscipline exploration geophysicist information inversion assumption characteristic energy 10 geologist china...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3916207
... of the Brazilian federation. The present work has two main goals for this location. The first goal is to compare different potential fields inversion techniques for the basement relief recovery with a geologic model from the basement obtained from well data for performance comparison. The second is understanding...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3914419
... potential of models derived by elastic FWI using an elastic modeling engine in its inversion. In this paper, we demonstrate the necessity of elastic RTM for elastic FWI models through two field data examples. geologist united states government ertm modeling engine geology image applied...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3916285
... Seismic impedance inversion methods are widely used to obtain the impedance of reservoirs from seismic data. However, conventional inversion methods have many challenges to accurately estimate impedance of complex reservoirs. Deep learning has shown great potential in the field of seismic...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3917042
... Building a high-quality seismic image depends on many factors related to acquisition parameters, pre-processing technologies, accuracy of the velocity and anisotropy models, etc. Full Waveform Inversion (FWI) has lately been used extensively to find a velocity model, especially for geologically...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3916500
... Full-waveform inversion (FWI) is a state-of-the-art method for imaging the earth’s subsurface. However, FWI is notorious for local-minimum trapping, or “cycle skipping,” and thus requires an accurate initial model (M´etivier et al. (2018)). Cycle skipping is caused by the nonconvex nature...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3916341
... subdiscipline acoustic fwi expanded abstract upstream oil & gas reservoir characterization applied geoscience matching fwi fwi international inversion exploration geophysicist geologist europe government avo anomaly imaging polarity reversal waveform inversion high resolution imaging...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3917360
... R. Young coal-fired power plant near Center, North Dakota. Data from five two-dimensional (2D) seismic lines were assessed as an alternative to three-dimensional (3D) seismic for CO 2 monitoring. 2D and 3D surveys were compared using wave equation-based amplitude-versus-offset (WEB-AVO) inversion...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-W14-01
... Classical AVO/AVA analysis/inversion for deriving rock/fluid properties is based on the elastic Zoeppritz equation using pre-stack migration image gathers. We propose to use full-waveform inversion-derived gathers as a substitution for the pre-stack migration image gathers for extracting AVA/AVO...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3917124
... of initial model (with or without), the technique of time shift estimation (cross-correlation maximization, sparsity maximization and time-shift inversion) and the inclusion of multi-shot information (surface-consistent constraint). A proof of concept is presented using a simple synthetic model...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3917060
... upstream oil & gas artificial intelligence economic geology american association united states government reservoir characterization acquisition wavelet distortion deconvolution applied geoscience petroleum geology geological subdiscipline exploration geophysicist international inversion...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3900861
... geologist artificial intelligence economic geology inversion geological subdiscipline upstream oil & gas reservoir characterization gmnet deep learning machine learning anomaly international gravity anomaly susceptibility geophysics applied geoscience energy 10 society...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3905696
... positions during inversion. To solve these problems, we propose an adjoint state characteristic reflection traveltime tomography (ASCRT) method based on the Eikonal equation to reconstruct the subsurface velocity model. This method automatically extracts the characteristic reflection traveltimes in pre...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3905663
... geologist rock type elastic full wavefield inversion figure 1 sedimentary rock structural geology noise international upstream oil & gas inversion efwi applied geoscience clastic rock reservoir characterization amplitude clastic reservoir exploration geophysicist prediction...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3904707
... geology inversion geologist deep learning reservoir characterization geological subdiscipline upstream oil & gas neural network machine learning exploration geophysicist international applied geoscience noise geophysics avo inversion synthetic dataset zoeppritz equation cgan...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3901080
... Currently, inversion techniques are being applied to well logging data, particularly from Ultra-deep Azimuth Resistivity electromagnetic tools, which are sensible to variations in conductivity at distances of tens of meters from the well-bore. In this case, any inversion program that uses...

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