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Showing 17,642 Results. Searched 196,371 documents.
Abstract: Image Enhacement After Migration; #90174 (2014)
John C. Bancroft, Thais Guirigay, and Helen Isaac
Search and Discovery.com
... of dipping events to prevent aliasing, and a deconvolution would increase the frequency of the wavelet and introduce aliasing. This reason is valid...
2014
Seismic Imaging of Steeply-Dipping Salt Ridges in the Mississippi Interior Salt Basin
Karl J. Kaufmann , Richard Ianniello , Oliver Carroll
GCAGS Transactions
... - because of spatial aliasing, the group interval, or more properly the CDP interval, limits the degree of steep dip that can be migrated. Line Length...
1992
Reconstruction of the Subsurface Reflected Wavefield on a Dense Grid from Multisensor Streamer Data
M. Vassallo, K. Eggenberger, D.J. van Manen, P. Watterson, A. Raskopin, A. Özbek
Indonesian Petroleum Association
... are assumed to be linear, and consequently, low-frequency information is extrapolated to high frequencies where aliasing is present. This is the approach...
2013
Key Technologies for Processing of Seismic Data in Gas Cloud Area
Search and Discovery.com
N/A
Abstracts: Ground Roll Attenuation Using LWD; #90173 (2015)
Ken Kocon and M. Sacchi
Search and Discovery.com
..., and irregularly sampled field data. Introduction Ground roll is a form of dispersive, low frequency, high amplitude noise that obscures useful information...
2015
Acquisition, Processing, and Analysis of Shallow, High-Resolution Seismic Data from the Outer Continental Shelf and Upper Slope, Offshore Louisiana
Susan E. Nissen , Janet M. Combes , Anthony G. Nekut
Journal of Sedimentary Research (SEPM)
... are approximately 6 dB lower in Figure 13 than in Figure 14. Spatial Aliasing Spatial aliasing is an incorrect apparent dip of seismic events at a given frequency...
1999
Value of marine vibrators for effective frequency-dependent spatial sampling of seismic wavefield
Arash JafarGandomi, Aparajita Nath, Sergio Grion
International Meeting for Applied Geoscience and Energy (IMAGE)
...Value of marine vibrators for effective frequency-dependent spatial sampling of seismic wavefield Arash JafarGandomi, Aparajita Nath, Sergio Grion...
2023
Improving 3D Images
Andrew Long, Constantine Tsingas
GEO ExPro Magazine
... a large frequency bandwidth from shallower events, free of aliasing, prevents processing noise from degrading deeper data quality and resolution...
2004
Nonuniform dispersed source arrays for broadband seismic acquisition
Joaqun A. Acedo, Mauricio D. Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
..., but aliasing starts to appear in the frequency Third International Meeting for Applied Geoscience & Energy 10.1190/image2023-3907882.1 Page 189...
2023
Hybrid 3D Marine Towed-Streamers and Ocean-Bottom Nodes Survey - Challenges and Solutions for Seismic Data Processing and Imaging
Wai Leng Cheah, Wong Li Ming Joyce, Evonne Hooi Rong Yu, Artem Sazykin, Gavin Menzel-Jones
Indonesian Petroleum Association
... seismic data quality. The first challenge we discuss is aliasing in the data because of the sparse source interval. The solution to overcoming...
2019
High-resolution imaging in the Campos Basin using legacy seismic acquisition
David Brookes, Darrell Armentrout, Milos Cvetkovic, Terry Johnson, Trish Sullivan
International Meeting for Applied Geoscience and Energy (IMAGE)
... comparing the legacy image (A) to the high-resolution Image (B) The acquired crossline sampling of 25 m begins to have spatial aliasing at 15 Hz...
2023
Abstract: 5D Interpolation and Regular Upsampling: Ill-suited or Fit-for-purpose?; #90187 (2014)
Mike J. Perz and Peter W. Cary
Search and Discovery.com
... on these steeply dipping synthetic data. . On the other hand, the onset of aliasing occurs at temporal frequencies well beyond the maximum recorded frequency...
2014
Reprocessing the East Coast Canada Stonehouse Survey with 3D SRME and Hybrid Layer Tomography PreSDM; #41549 (2015)
Todd Mojesky, Ali Karagül, Bill Goodway, Chris Szelewski, Martin Dashwood
Search and Discovery.com
... are densely sampled. Within these limitations, the 2D algorithm worked well on this survey in tandem with de-aliased Radon demultiple. Standard frequency...
2015
3D Seismic from Planning to Mapping
A. Kullerud, O. Nipen, H. E. Nordberg
Indonesian Petroleum Association
... (for migration) and the line/CDP-distance. The maximum response in the frequency band was 20-30 Hz corresponding to the dominating frequency at the top...
1985
Key Technologies for Processing of Seismic Data in Gas Cloud Area, Bohai Bay Basin, #42093 (2017).
Xia Tongxing, Ming Jun, Liu Lei, Zhou Xuefeng, Liu Hongxing, Liu Xuetong
Search and Discovery.com
...-stack data. Besides, MPFI avoids spatial aliasing on account of the weighted high frequency data with respect to prior. The workflow groups several...
2017
Abstracts: Interpolation of Nonstationary Seismic Records using a Fast Generalized Fourier Transform; #90173 (2015)
Mostafa Naghizadeh and Kristopher A. Innanen
Search and Discovery.com
... the fast generalized Fourier transform FGFT to identify the space-wavenumber evolution of nonstationary spatial signals at each temporal frequency...
2015
Quantifying the Benefit from Pressure Gradient Data in Wavefield Reconstruction for Time-Lapse Seismic, #40843 (2011)
Phil Christie, Kurt Eggenberger, Everhard Muyzert, Massimiliano Vassallo, Ali Özbek
Search and Discovery.com
... promise for higher order de-aliasing beyond twice-Nyquist wavenumber. Introduction Time-lapse seismic information has proven to be of great value...
2011
Abstract: Cost Efficient Acquisition to Reduce Coarse Land 3D Line Spacings Through Beyond Nyquist Interpolation and Wavefield Reconstruction for Signal and Noise; #90187 (2014)
Bill Goodway
Search and Discovery.com
... statistical and aliasing limitations for key processing and inversion steps such as surface consistent statics, pre-stack migration (PSTM) and even...
2014
Vertical and Lateral Seismic Resolution and Attenuation: Part 7. Geophysical Methods
R. E. Sheriff
AAPG Special Volumes
... are required by sampling theory to prevent aliasing. An aliased signal appears in the seismic record at lower frequency and/or dip than is real...
1992
Abstract: Fourier Domain Regularization 5D and More; #90174 (2014)
V. Khatchatrian
Search and Discovery.com
... data into frequency-wave number or multi-dimensional wave number domain is a natural tool for data regularization. However its efficiency comes with some...
2014
Abstract: Interpolation of Aliased Seismic Data in the Curvelet Domain; #90172 (2014)
Mostafa Naghizadeh, Mauricio D. Sacchi
Search and Discovery.com
... interpolation methods using prediction filters. These methods operate in the frequency-space (f-x) domain. In both cases, low frequency data components...
2014
Test Analysis of a 2D Seismic Survey With Finer CMP Interval
Zhao Xuewu, Widya Putri Pratami, Xu Qingsen, Muchlis MYS, Guo Shanli
Indonesian Petroleum Association
... to spatial aliasing and the high-density spatial sampling just eliminates the aliasing. It is well known that the low frequency of signal is desired...
2022
Application of Robust Noise Reduction on a Land 3D Seismic Data
Agus Abdullah, Jesse Shaw
Indonesian Petroleum Association
... high frequency scatter and nature noises. Keywords: Curvelet, Denoise, Random Noise, Linear Noise, Steep Dip Noise. INTRODUCTION Noise cancelling...
2012
Noise Attenuation in Common Receiver Gather to Enhance S/N Ratio in Seismic Data
Dara Felisia A, Triswan Mardani Ade Surya, R.B.Fauzan Irshadibima, Firman Syaifuddin
Indonesian Petroleum Association
... data processing generally consists of-process geometries, static correction, filtering and velocity analysis, NMO and migration. Frequency filtering...
2017
Abstract: A Low Rank Based Seismic Data Interpolation Via Frequency-Patches Transform and Low Rank Space Projection; #90224 (2015)
Zhengsheng Yao, Mike Galbraith, and Randy Kolesar
Search and Discovery.com
...Abstract: A Low Rank Based Seismic Data Interpolation Via Frequency-Patches Transform and Low Rank Space Projection; #90224 (2015) Zhengsheng Yao...
2015