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Showing 1,196 Results. Searched 200,616 documents.
Abstract: Modelling Near-field Effects in VSP-based Q-estimation Part 2: Modelling Results; #90171 (2013)
Arnim B. Haase and Robert R. Stewart
Search and Discovery.com
...-to-trace amplitude decay with increasing depth and also a phase rotation. These observations are considered to be time-domain evidence for a near...
2013
Abstract: Greedy Least-Squares and its Application in Radon Transforms; #90171 (2013)
Juefu Wang and Mark Ng
Search and Discovery.com
... and the convergence rate. We adopt the idea in a time-space domain high-resolution Radon transform for multiple attenuation and a local Radon transform...
2013
Abstract: Artifact-Free Population of Geologic Models from Seismic Inversions; #90172 (2014)
John V. Pendrel, Sumon Bhattacharyya, David Fowler
Search and Discovery.com
... corrections. The example which we have shown is in the time domain but the conclusions would be identical to observations made in depth. Acknowledgements...
2014
Abstract: Estimation of Q-factor and Phase Velocity Using the Recovered Stress-strain Relaxation Spectrum; #90172 (2014)
Dali Zhang, Michael P. Lamoureux, Gary F. Margrave
Search and Discovery.com
... approximation can be used for determination of the internal memory variables in time-domain finite difference (TDFD) numerical simulation of viscoelastic...
2014
Abstract: Estimation of Group Velocity using Slant Stack Generalized S Transform Based Method; #90174 (2014)
Roohollah Askari, Robert J. Ferguson, and Kristof DeMeersman
Search and Discovery.com
... for the estimation of the group velocity. The slant stack generalized S transform based method uses the slant stack idea in the time-frequency domain based...
2014
Abstract: Receiver Comparison for a Non-repeatable Earthquake Source on the Hussar 2011 Low-frequency Seismic Experiment; #90174 (2014)
Kevin W. Hall, Gary F. Margrave, and Malcolm B. Bertram
Search and Discovery.com
... response can be modeled as a 2nd order minimum-phase Butterworth filter (Bertram and Margrave, 2011). Inverting this filter to create a time-domain...
2014
Abstract: Seismic Denoising by Time-Frequency Reassignment; #90174 (2014)
Li Han, David Bonar, and Mauricio Sacchi
Search and Discovery.com
... the signal is reconstructed in the time domain. Synthetic data examples in both 1D and 2D are utilized to test the proposed method. Theory Forward...
2014
Abstract: A Field Experiment Recording Low Seismic Frequencies; #90174 (2014)
G. F. Margrave, M. B. Bertram, K. L. Bertram, K. W. Hall, K. A. H. Innanen, D. C. Lawton, L. E. Mewhort, and T. M. Phillips
Search and Discovery.com
... in the frequency domain, hence correcting for both amplitude and phase. Figure 5 shows similar information as Figure 4 but this time the 10 Hz geophones...
2014
Abstract: Multi-trace Acoustic-impedance Inversion with Transform-domain Sparsity Promotion; #90174 (2014)
Sanyi Yuan, Shangxu Wang, Ning Tu, and Xiang Li
Search and Discovery.com
... updates are sparse in transform-domain, we firstly invert for sparsifying transform coefficients, and then transform them back to physical (time-space...
2014
Abstract: Identifying Reservoir Drainage Patterns from Microseismic Data; #90187 (2014)
Andreas Wuestefeld, Ted Urbancic, and Adam Baig
Search and Discovery.com
... on the accessible hydrocarbons. While event locations provide valuable information on the response of the rock to stimulation, they use only time domain...
2014
Abstracts: Full Waveform Inversion with Total Variation Regularization; #90173 (2015)
Amsalu Y. Anagaw, Mauricio D. Sacchi
Search and Discovery.com
... to noise ratio (SNR)=10, was added to synthetic data in the time domain data. In the frequency domain, three discrete frequencies were selected (3.5, 7.6...
2015
Abstracts: Accurate Declipping Hybrid Algorithm for Ground Penetrating Radar Data; #90173 (2015)
Akshay Gulati and R. J. Ferguson
Search and Discovery.com
... for the targeted subsurface form a synthetic aperture, whose impulse response is a spatially variant curve in the space-time domain. A common set up for GPR...
2015
Abstract: Anisotropy-Preserving 5D Interpolation by Hybrid Fourier Transform; #90224 (2015)
Juefu Wang and Shaowu Wang
Search and Discovery.com
... each trace from the time domain to the temporal frequency domain. We then perform interpolation for each frequency slice. The kernel involves a hybrid...
2015
Abstract: Acquiring Low Frequencies : Sweeps, Sensors, Sampling and Stories; #90224 (2015)
Olivier Winter, Anna Leslie, and Forest Lin
Search and Discovery.com
... in time domain (c). The recorder/sensor system The geophone coil motion can be modeled as a simple harmonic oscillator, where its response shape...
2015
Quantitative Seismic Interpretation An Earth Modeling Perspective; #41348 (2014)
Damien Thenin and Ron Larson
Search and Discovery.com
.... The depth domain is preferred as it requires fewer efforts to convert seismic and time interpretation to depth than all the other types of data back...
2014
An Interpreters Guide to Successful Prestack Depth Imaging; #41544 (2015)
Rob A. Holt
Search and Discovery.com
... in the time domain where insensitivity to errors in the migration velocity field result in a small loss of focusing that can be relatively easily recovered...
2015
Spherical-Wave Computational AVO Modelling in Elastic and Anelastic Isotropic Two-Layer Media; #41564 (2015)
Arnim B. Haase, Charles P. Ursenbach
Search and Discovery.com
.... They are repeated for all frequency points desired in the output bandwidth, and then the time domain response is found by inverse Fourier transform...
2015
Simultaneous Joint Inversion of Seismic and Gravity Data for Long Offset Pre-Stack Depth Migration in Northern Oman, #41569 (2015).
D. Colombo, M. Mantovani, M. De Stefano, D. Garrad, Hussain Al Lawati
Search and Discovery.com
... seismic image for the deep model, carbonate section. Gravity measurements were taken every 490m. Seismic data were initially processed in time domain...
2015
Seismic Characterization of the Navajo Reservoir, Buzzards Bench, Utah; #51503 (2018)
Kimberley Haar, Robert Balch, Robert Will
Search and Discovery.com
... velocity profiles were upscaled into a time domain geocellular geologic model created from the seismic horizons interpreted with the Seismic-Well Tie...
2018
A Data-Driven Method for Processing and Analysis of Gas Chromatography-Mass Spectrometry (GC-MS) Signals in Differentiation of Oil Samples, #42401 (2019).
Le Lu, Andrew Bishop, Tianxing Wang, Rosemarie Bisquera, Yongchun Tang,
Search and Discovery.com
... outcomes. Comparison typically requires alignment in the time domain as a data pre-processing step, which can be challenging as elution orders can vary...
2019
Application of Sequential Offset Technique in Full Waveform Inversion; #42598 (2025)
Binggang Wang
Search and Discovery.com
...] Research on full waveform inversion in time domain. China University of Petroleum Master Degree Thesis. Fichtner A, Trampert J. Resolution analysis...
2025
Exploration of Deepwater Regions Offshore India
Roberto Fainstein, Rajesh Kalra
International Meeting for Applied Geoscience and Energy (IMAGE)
..., for this to be effective the depth to time conversion needs be clarified. Hence, to the outset a comparison between PSTM and APSDM results needs be done in the time domain...
2021
Volumetric Calculations Using 3D Seismic Calibrated Against Porosity Logs - Pretty Hill Formation Reservoirs, Onshore Otway Basin
P. J. Boult, J. Donley
Petroleum Exploration Society of Australia (PESA)
... in the more modern holes where caving was less of a problem. This combined porosity log was then adjusted to the time domain using the time/depth curve...
2001
DL-fused elastic FWI: Application to marine streamer data
Pavel Plotnitskii, Oleg Ovcharenko, Vladimir Kazei, Daniel Peter, Tariq Alkhalifah
International Meeting for Applied Geoscience and Energy (IMAGE)
.... METHOD OVERVIEW The idea of this method is to directly map high-wavenumber model updates from time-domain FWI into low-wavenumber model updates (Figure...
2022
The Geophysicists' Bane: Multiple Suppression on the North West Shelf
C. R. T. Ramsden, M. R. Hobson, R. Cooper
Petroleum Exploration Society of Australia (PESA)
... to the original, (Figure 3) shows strong attenuation of the multiple peaks. The frequency peaks relating to the short-period, time-domain reverberants can...
1988