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Showing 17,676 Results. Searched 195,688 documents.
Abstract: Empirical Mode Decomposition (EMD) of Turner Valley Airborne Gravity Data in the Foothills of Alberta, Canada; #90211 (2015)
Hassan Hassan
Search and Discovery.com
... to remove the overwhelming noise and to recover useful signals from the data. For this reason, we introduce in this work a newly developed method...
2015
High resolution imaging by dynamic matching FWI in the presence of AVO effects
Fuchun Gao, Shuqian Dong, Yang He, James Sheng, Faqi Liu, Bin Wang, Carlos Calderon, Yuriy Ivanov, Fanny D. Marcy, Ole E. Aaker
International Meeting for Applied Geoscience and Energy (IMAGE)
... were further suppressed by linear noise attenuation (Figure 3). Compared to data before noise attenuation (Figure 3, bottom left), the data after...
2023
Adaptive OCCAMs inversion for the interpretation of borehole ultra-deep azimuthal resistivity measurements
Wardana Saputra, Junsheng Hou, Carlos Torres-Verdín, Sofia Davydycheva, Vladimir Druskin
International Meeting for Applied Geoscience and Energy (IMAGE)
... of data misfit to trigger local higher-dimensional inversions. We construct an augmented linear system for fast and stable OCCAM’s inversion...
2023
A Preliminary Assessment of the Hydrocarbon Potential of Kerio Valley Basin: Gravity and Magnetic Interpretation
Abiud Masinde, Cleophas Simiyu, Innocent Murunga, George Muia, Aaron Waswa, Justus Barongo
Africa Energy and Technology Conference, 2016
... was corrected for IGRF, diurnal, filtered using a 1 Hz low pass 10km Hanning filter to reduce noise, later, reduced to equator to place all anomalies...
2016
Probabilistic seismic interpolation with the implicit prior of a deep denoiser
Matteo Ravasi
International Meeting for Applied Geoscience and Energy (IMAGE)
...., 2022; Izzatullah et al., 2022) problems. Nevertheless, despite the fact that the process of adding random noise to a signal is stochastic in nature...
2023
Abstract: Orthorhombic Time Tomography: Accounting for Azimuthal Effects in Long-Offset WAZ Data; #90254 (2016)
Jeremie Messud, Christophe Rohel, Gilles Lambaré, and Patrice Guillaume
Search and Discovery.com
... of vertically transverse isotropic non-linear slope tomography for time imaging to account for azimuthal anisotropy (orthorhombic). We illustrate...
2016
Current Trends in Geophysics
H. E. Stommel, J. M. Graul
Indonesian Petroleum Association
... processing, wavelet processing, coherency enhancement, attenuation analysis, multi-parameter color displays, forward and inverse modeling...
1978
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
... generalized linear inversion (GLI) method, which replaces the linearized subproblem (Cooke and Schneider, 1983) with basis pursuit de-noise (BPDN) problem...
2014
Pre-drill Reservoir Evaluation Using Passive Seismic Imaging
Charles Sicking, Jan Vermilye, Ashley Yaner
Unconventional Resources Technology Conference (URTEC)
... noise in the field data is required for valid testing of the method because reflectivity noise and coherent surface wave noise dominate passive data...
2016
Application of Pseudorandom m-Sequences for Seismic Acquisition
Joe Wong
Search and Discovery.com
... or pure noise is that its autocorrelation is a delta function. The autocorrelation of an m-sequence makes it clear why it is considered...
Unknown
Application of Pseudorandom m-Sequences for Seismic Acquisition
Joe Wong
Search and Discovery.com
... or pure noise is that its autocorrelation is a delta function. The autocorrelation of an m-sequence makes it clear why it is considered...
Unknown
Stress State Derived from Microseismicity Induced by Hydraulic Fracturing: Downhole and Surface Monitoring
Zuzana Jechumtálová, František Stanĕk, Leo Eisner, G.Randy Keller
Unconventional Resources Technology Conference (URTEC)
...-linear or discontinuous mathematical aspects of the inverse problem, and an intrinsic property of the double-couple source mechanisms, which apparently...
2016
Theory of Nuclear Transmission Densitometry Applied to Sedimentology and Geotechnology
Peter V. Meyers, Wesley J. Van Sciver, Adrian F. Richards
Journal of Sedimentary Research (SEPM)
... ray attenuation is presented. Using previously established formulas, it is possible to choose calibration coefficients that will result in an error...
1974
A Simple Autocorrelation Algorithm for Determining Grain Size from Digital Images of Sediment: RESEARCH METHODS PAPERS
David M. Rubin
Journal of Sedimentary Research (SEPM)
... 160------------------------ (uncorrelated to other grains). In such a grossly oversimplified representation, the correlation between pixels...
2004
Recursive Inversion and Attribute Analysis of 3D Seismic Data Over a Four-Way Dip Structure, Gulf of Thailand
S. Thanatit, S. Ronghe
Indonesian Petroleum Association
.... A flat surface barely discernible on the instantaneous phase section (Figure 8-A) represents the gas-oil contact. Attenuation of high frequencies...
1999
Bottom Cable 3-D Seismic Operations in the Transition Zone
Ezhar Manaf, Bambang Indroyono, Peter C. Johnson, James A. Musser
Indonesian Petroleum Association
... through migration yields a continuous, high quality image of the subsurface even under the shoreline. Krey, Th. C., 1987, Attenuation of Random Noise...
1995
Geophysical Evidence for Thin-Skinned Structural Deformation in the Norman Range, Northwest Territories
DON C. Lawton, J. Helen Isaac
CSPG Bulletin
...-stack time migration and pre-stack depth migration. Pre-stack noise attenuation was effective in reducing shot-generated noise and improving...
2005
Integrated Geomechanical Interpretation of Hydraulic Stimulation Operations Using Distributed Vibration Sensing
Michael Williams, Joel Le Calvez, Colin Wilson, Adrian Rodriguez-Herrera
Unconventional Resources Technology Conference (URTEC)
... the attenuation of the pump harmonics, etc. We integrate these new measurements into the existing geomechanical modelling approach to stimulation interpretation...
2019
Egypt's Buried Secrets
Mark Davies, Gary Barnes
GEO ExPro Magazine
... varies roughly quadratically with turbulence whilst eFTG noise is more linear. Figure 3b gives the ratio of these trends and shows the noise...
2020
Magnetotelluric Soundings in the Ouchita Thrust Belt of Central Texas
J. G. Muncey , W. J. Ehni
GCAGS Transactions
... one remote reference station and processed by the remote referencing technique (Gamble et al., 1979) to suppress noise. An average separation...
1985
Lateral Continuity of Facies and Parasequences in Middle Cambrian Platform Carbonates, Carrara Formation, Southeastern California, U.S.A.
Roy D. Adams , John P. Grotzinger
Journal of Sedimentary Research (SEPM)
.... D27-D31. BULSARA, A.D., AND GAMMAITONI, L., 1996, Tuning in to noise: Physics Today, v. 49, p. 39-45. CLOYD, K.C., AND DEMICCO, R.V., 1990, Tidal channel...
1996
Seismic Activity in the Central Gulf Coast Basin
Eugene R. Brumbaugh
New Orleans Geological Society
... exploration purposes. Other than multiplicity, which is primarily responsible for the quality of seismic data in regard to signal to noise ratio...
1991
Feasibility of the quantitative time-lapse seismic characterisation of a heterogeneous CO
Roman Isaenkov, Stanislav Glubokovskikh, Boris Gurevich
Petroleum Exploration Society of Australia (PESA)
... parameters can be estimated from realistic bandlimited seismic data and how noise in the data affects the quality of the estimates. To this end we perform...
2019
Seismic data interpolation based on diffusion model deep learning
Sian Hou, Chunming Wang, Qingcai Zeng, Dong Cui, Yixuan Yan, Cai Zhang, Zheng Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
... to generate labeled data with different levels of Gaussian random noise, and then using existing network models such as U-net or ResNet for training...
2023
Abstracts: Does Accurate Processing of Airborne EM Data Have an Impact on Derived Hydrogeological Units?; #90173 (2015)
Andrea Viezzoli, Camilla Soerensen, and Flemming Jorgensen
Search and Discovery.com
..., and then the hydrogeology, change depending on the level of decoupling of artifacts, of lateral averaging, of late time noise assessment, and compare...
2015