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Showing 18,835 Results. Searched 200,630 documents.
Abstract: A study of Spectral Broadening Methods for Multicomponent Data; #90174 (2014)
Chuck Ursenbach, Peter Cary, and Mike Perz
Search and Discovery.com
... data) is its poor resolution compared to PP data. Even after squeezing PS data from PS to PP time, the frequency content of the PS data is typically...
2014
Petrography of a Carbonate Transgressive-Regressive Sequence: The Bird Spring Group (Pennsylvanian), Arrow Canyon Range, Clark County, Nevada
Christopher P. Heath, David N. Lumsden, Albert V. Carozzi
Journal of Sedimentary Research (SEPM)
... were measured: frequency and clasticity of crinoid fragments, oolites, pellets (fecal, lithic and algal coated) and detrital quartz; frequency of debris...
1967
Chapter Eight: Horizon and Formation Attributes
Alistair R. Brown
AAPG Special Volumes
... and notionally force-fit the spectrum to yield three maxima. First dominant frequency should primarily express the properties of the wavelet. Second...
2011
Comparison of Sand-Layer Geometry on Flat Floors of 10 Modern Depositional Basins
Orrin H. Pilkey , Stanley D. Locker , William J. Cleary
AAPG Bulletin
... 856 64 6. (June) A comparative study of 10 deep turbidite basins indicates that sand-layer thickness, frequency, and continuity can be related...
1980
Seismic speckle as multiplicative noise explaining land reflections distorted by near-surface scattering
Andrey Bakulin, Dmitry Neklyudov, Ilya Silvestrov
International Meeting for Applied Geoscience and Energy (IMAGE)
... stacked (red) spectrum tracks the “clean” (blue) spectrum in low and mid-frequency intervals, whereas two curves diverge at higher frequencies as expected...
2022
Physics-based preconditioned multidimensional deconvolution in the time domain
David Vargas, Ivan Vasconcelos, Matteo Ravasi, Nick Luiken
International Meeting for Applied Geoscience and Energy (IMAGE)
... in the frequency-wavenumber domain to constrain the spectrum of our solution in a way that it remains within the expected signal cone and rejects...
2022
Suppression of coherent and random noise using adaptive thresholding method in seismic-while-drilling
Yue Ma, Yujin Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
... an adaptive thresholding method in the localized frequency-wavenumber (f-k) domain of prestack seismic gathers. The propose method is effective...
2022
Robust reconstruction via orthogonal matching pursuit with Fourier operators
Ji Li, Mauricio D. Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... use the Fourier operator work on the frequency-space ( f −x) domain. Seismic data are transformed from the time-space (t − x) domain...
2022
Seismic response analysis of thin coals
Yijun Xi, Xingyao Yin
International Meeting for Applied Geoscience and Energy (IMAGE)
.... (2021) screened out the seismic frequency band sensitive to the underlying sandstone in the coal bearing formation through the spectrum decomposition...
2022
Laboratory Experiments and Numerical Simulation on Bitumen Saturated Carbonates: A Rock Physics Study for 4D Seismology
Arif Rabbani, Jason Nycz, Zizhen Wong, Doug Schmitt, Ken Gray
Petroleum Exploration Society of Australia (PESA)
... method indicate its strong dependency on viscosity of pore fluid and (or) the frequency. Key words: Rock Physics, Bitumen, Carbonates, 4D Seismology...
2016
Numerical experiments to characterize P-wave attenuation in partially saturated non-isothermal porous media
Naddia D. Arenas, Gabriela B. Savioli, Juan E. Santos, José M. Carcione
International Meeting for Applied Geoscience and Energy (IMAGE)
... and frequency shift methods were used to estimate the quality factor Q. In the numerical examples thermal effects are considered (coupled Case) or omitted...
2023
Improved Subsurface Imaging and Interpretability Through Broadband Reprocessing of Legacy Seismic Data: Examples from North West Shelf Australia
Stephen Malajczuk, Rajesh Saklani, Dean Clark, David Eastwell
Petroleum Exploration Society of Australia (PESA)
... to provide greater signal content at the low end of the frequency spectrum, vital for better deep data imaging and interpretation. The deghosting...
2016
Phase pilot recovery: A foundation for mitigating speckle scattering noise in seismic data
Akshika Rohatgi, Andrey Bakulin, Sergey Fomel
International Meeting for Applied Geoscience and Energy (IMAGE)
... traces, providing insights into the necessary ensemble size for desired phase recovery quality. However, the pronounced frequency dependency adds...
2024
The application of simultaneous source technology to conventional acquisition
Ray Abma
International Meeting for Applied Geoscience and Energy (IMAGE)
... processing are suggested here. The first is muting the area of the low-frequency part of the FK domain that should not contain signal. The second enhancement...
2024
Geophysical Monitoring with Seismic Metamaterial Contrast Agents
Quin R. S. Miller, H. Todd Schaef, Satish K. Nune, Ki Won Jung, Jeffrey A. Burghardt, Paul F. Martin, Matthew S. Prowant, Kayte M. Denslow, Chris E. Strickland, Manika Prasad, Mathias Pohl, Piyoosh Jaysaval, B. Peter McGrail
Unconventional Resources Technology Conference (URTEC)
.... Abstract Acoustic impedance tube and forced-oscillation seismic core test measurements were conducted to examine the low-frequency properties...
2019
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
... attributes (essentially amplitude, frequency, and phase). The attributes, either independently or in combination, can provide information about...
1999
Abstract: Inexact Full Newton Method for Full Waveform Inversion Using Simultaneous Encoded Sources; #90187 (2014)
Amsalu Y. Anagaw and Mauricio D. Sacchi
Search and Discovery.com
... full Newton optimization method for the full waveform inversion algorithm in the frequency domain which utilizes simultaneous sources based upon...
2014
Source location using physics-informed neural networks with hard constraints
Xinquan Huang, Tariq Alkhalifah
International Meeting for Applied Geoscience and Energy (IMAGE)
...) as: The frequency domain wavefield in a 2D acoustic, constant density and isotropic medium, u(x, z, w), satisfies the following equation: L = w2 u(x, z, w) + —u(x...
2022
Advances in Sonic Logging A New 3 Dimensional Acoustic Log Measurement
Frank Wijnands
Indonesian Petroleum Association
... data acquisition. The sonic scanner can even acquire high frequency seismic reflection surveys, with its monopole source and receivers both placed...
2007
High Resolution Interpretation in the Llanos Basin, Colombia
Germán Rodriguez, Hermes Garzón, Jaime A. Stein, Scott Humphrey, Guillermo Fajardo
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... in the signal, (Smith et.al. first break volume 26, June 2008). Harmonics are integer multiples of a fundamental frequency while sub-harmonics are integer...
2009
Attenuation of Marine Coherent Noise – A Processing Case History in the East China Sea
Huaien Wang, Liu Guangxin, Curtis E. Hinz, Fred F. C. Snyder
Southeast Asia Petroleum Exploration Society (SEAPEX)
... to use frequency-wavenumber filtering to remove all the low time dip noise events without attenuating the good reflections as well. It is also unacceptable...
1990
EXTENDED ABSTRACT: High-Resolution Regional Sequence Stratigraphic Framework of Aptian through Coniacian Strata in the Comanche Shelf, Central and South Texas
Ryan M. Phelps, Charles Kerans, Robert G. Loucks
GCAGS Transactions
... and illustrate isochronous lithofacies relationships within a 30 m.y. time frame from the Barremian through Coniacian. Approximately 50 high-frequency...
2010
EXTENDED ABSTRACT: Stuart City Margin Architectural Variability and the Effect of Regional Structural Heterogeneity
Ryan M. Phelps, Charles Kerans, Lowell Waite, Chris Zahm
GCAGS Transactions
... to the shelf interior is similar along the shelf margin. Furthermore, distinct types of high-frequency cycles are partitioned in different locations along dip...
2010
Seismic Estimation of Point-Bar Sands Using Simple Modeling Procedures
Robert Dennison
Indonesian Petroleum Association
... the reciprocal i.e. i/f, of every frequency point. Once G(w) had been computed an Inverse Fourier Transform converts the wavelet spectrum back into the time domain...
1984
Potential of FWI imaging for shallow turbidite shadow zone: A case study
Swarup Sarkar, James Sheng, Faqi Liu, Daniel Davies, Roy Ha
International Meeting for Applied Geoscience and Energy (IMAGE)
... frequency bands. During the inversion, proper QC was performed to ensure the convergence in both data domain and image domain, where data domain QC...
2023