AVAZ inversion for brittleness indicator and fracture parameters of gas-bearing reservoirs with tilted transverse isotropy

Yuanyuan Tan, Guangzhi Zhang, Zhengqian Ma, Ying Lin

International Meeting for Applied Geoscience and Energy (IMAGE)

... was directly expressed by a brittleness indicator and fracture density. A hierarchical inversion method based on the discrete Fourier transform was proposed...

Abstracts: Prestack Interpolation of a Sparsely Acquired and Heavily Structured 3D Land Data Set; #90173 (2015)

Dan Negut, Dave Ganley, Muyi Kola-Ojo, Dennis Quinn, Juefu Wang, Angela Truong, and David Emery

Search and Discovery.com

..., Canada [email protected] Summary Two different prestack interpolation methods, 5D interpolation by Fourier reconstruction and dip-scanbased...

Deep learning seismic full-waveform inversion and transient EM joint inversion for near surface velocity modeling

Daniele Colombo, Ernesto Sandoval-Curiel, Ersan Turkoglu, Weichang Li

International Meeting for Applied Geoscience and Energy (IMAGE)

...-Fourier domain. The Laplace-Fourier domain is chosen to transform the field data where the secondary arrivals, such ground roll, can be effectively...

Improvement of inverse scattering angle-domain common image gathers using optical flow

Ammir A. Karsou, Sérgio L. E. F. da Silva, Felipe V. Capuzzo, Felipe T. Costa, Jorge Lopez, Roger M. Moreira, Marco Cetale

International Meeting for Applied Geoscience and Energy (IMAGE)

... a frequency-wavenumber Fourier transform. Then, a local plane wave decomposition is used to apply the imaging condition for each angle estimated...

A practical implementation of data-space Hessian in the time-domain formulation of source extended full-waveform inversion

Gaoshan Guo, Stephane Operto, Ali Gholami, Hossein S. Aghamiry

International Meeting for Applied Geoscience and Energy (IMAGE)

.... In this method, each windowed trace is analyzed using the conventional Fourier transform to obtain a locally-stationary matching filter as ∗ b δ ds,r (ω, τ)δ...

Calibration of Continuous Wavelet Transform (CWT) Fracture Closure Detection Using Laboratory Hydraulic Fracturing Experiments

Mohamed A. Gabry, Zhi Ye, Amr Ramadan, Ahmad Ghassemi, Mohamed Y. Soliman

Unconventional Resources Technology Conference (URTEC)

... the CWT fracture closure detection technique. They chose Wavelet Transform (WT) as a signal processing technique to overcome these limitations of Fourier...

Abstract: Near-surface Issues in TTI Wave Equation Migration from Topography; #90171 (2013)

Chuck Ursenbach, Richard A. Bale, and Samuel H. Gray

Search and Discovery.com

... ways, such as when the inverse transform leads to a narrow, high-amplitude spike in real space, as shown in Figure 1. Using a rectangular k-filter...

When the Syn-Depositional Climatic Variations Influence My Source Rock Properties … The Case Study of the Vaca Muerta, #51523 (2018).

Alain Lejay, Johannes Monkenbusch, Lionel Martinez, Gregory N. Boitnott, Laurent Louis, François Gelin

Search and Discovery.com

... these previous acquisitions, automated micro-XRF spectrometer and Automated Fourier Transform Infra-Red spectroscopy (FTIR) were tested on portions...

Abstract: Optimum Aperture Length for Improving Dispersion Curve Analysis in CMP Cross-Correlation of Surface Waves; #90187 (2014)

Roohollah Askari, Robert J. Ferguson, and Helen Isaac

Search and Discovery.com

... the phase velocity for each CMP gather, and, we convert the resulting dispersion curve to a vertical shear wave velocity by an inverse procedure...

Seismic Modelling in 3D for Migration Testing

Search and Discovery.com

... frequency, F is the 2D Fourier transform over the lateral spatial coordinates, F−1 is its inverse, ψsource is a mathematical model of the source, and iz k 2...

The emergence and impact of scientific machine learning in geophysical exploration

Umair bin Waheed

International Meeting for Applied Geoscience and Energy (IMAGE)

... in the field of geophysical modeling and inversion using emerging SciML paradigms, including physics-informed neural networks (PINNs), Fourier neural...

Antialiasing 5D Interpolation; #41497 (2014)

Stephen K. Chiu

Search and Discovery.com

... transpose of x, F is a multi-dimensional forward Fourier transform, F-1 is a multi-dimensional inverse Fourier transform, and x’ is a least-squares solution...

A practical approach to automate end-to-end multi-stage iterative source separation with prior framework using machine learning

Rajiv Kumar, Yousif Izzeldin Kamil Amin, Riccardo Giro, Sunil Manikani, Nam Pham, Massimiliano Vassallo, Phillip Bilsby, Tao Zhao

International Meeting for Applied Geoscience and Energy (IMAGE)

... relies on the fact that the seismic signal of interest exhibits higher coherency and is sparse in the transform domain, whereas the interference noise...

Interpolating High-Resolution Well Log Volume Using Seismic Dip Vectors and Control Grids

Yingwei Yu

Unconventional Resources Technology Conference (URTEC)

... w can be in By inverse Fourier transform, we convert...

Analysis of rank-reduction methods for filtering and interpolation

Rafael Manenti, Mauricio D. Sacchi

International Meeting for Applied Geoscience and Energy (IMAGE)

... and their applications in Fourier transform ion cyclotron resonance mass spectrometry: Proceedings of the National Academy of Sciences, 111, 1385–1390, doi: https...

Seismic sparse time-frequency representation via GAN-based unsupervised learning

Youbo Lei, Yang Yang, Naihao Liu, Shengtao Wei, Jinghuai Gao, Xiudi Jiang

International Meeting for Applied Geoscience and Energy (IMAGE)

... to verify its effectiveness and compare it with STFT and sparse STFT. SPARSE SHORT-TIME FOURIER TRANSFORM STFT is an effective tool to transform 1D seismic...

Fast Gauss-Newton full-wavefield migration

Siamak Abolhassani, Eric Verschuur

International Meeting for Applied Geoscience and Energy (IMAGE)

... wavenumber, and Fx represents the inverse spatial Fourier transform. Extrapolating the seismic source signature downward from z0 to zN and then upward...

AVO-preserving seismic data interpolation by orthogonal polynomial decomposition and mathematical morphological filtering

Yanxin Zhou, Yangang Mo, Junzhou Liu, Dajian Jiang

International Meeting for Applied Geoscience and Energy (IMAGE)

... are the expression for forward and inverse Fourier transform. It should be emphasized that Edataiter is the result of enhancing reflection signal...

An anti-aliasing plane wave decomposition method based on local linear Radon transform

Jian Xiang, Huazhong Wang, Bo Feng, Chengliang Wu

International Meeting for Applied Geoscience and Energy (IMAGE)

... to regularization constraints. The least squares inversion constrained by Tikhonov regularization can stably solve the inverse of Radon transform...

Overburden Compensation: A Pragmatic Solution to the Frequency Dependent Amplitude Losses Associated With Laterally Variable Overburden

Swee Leng NG, Martin Bayly

Indonesian Petroleum Association

... filtering by Fourier transform: Geophysics 56, 519-527. Figure 1 - Common Mid-Point gathers preconditioned for further testing. Figure 2 - Common Mid...

Shale Gas OVT Seismic Data Prestack Trace-Gather Optimization Technique

Yusheng Zhang, Gang Yu, Xing Liang, Benjing Liu, Guangming Hu

Unconventional Resources Technology Conference (URTEC)

... back to the time domain ④ by inverse Fourier transform. Non-flat event alignment technique: The event alignment methods commonly used are mainly...

Fracture Analysis at St

Search and Discovery.com

Abstract: Data Interpolation by Angular Weighted MWNI; #90187 (2014)

Mark Ng and Dan Negut

Search and Discovery.com

...), where ukx is the spatial transform model in kx , T the sampling diagonal only matrix, F’ the inverse spatial Fourier transform operator, F the forward...

AVO Modeling of Monochromatic Spherical Waves: Comparison to Band-Limited Waves; #41567 (2015)

Charles Ursenbach, Arnim Haase

Search and Discovery.com

... the reflection coefficient for a band-limited wavelet via an inverse Fourier transform, as has been carried out by Haase (2004). We have previously...

Fast self-supervised learning for reconstruction of 3D seismic data

Yinshuo Li, Wenkai Lu, We Cao

International Meeting for Applied Geoscience and Energy (IMAGE)

... activate function, and inverse of real fast Fourier transform. The blue modules in the figure are stackable. Given that the obtained seismic data D...