Abstract: Event-directed Spectrum Extrapolation for Upsampling Seismic Traces; #90172 (2014)

Zhengshong Yao, Elvis Floreani

Search and Discovery.com

... to predict the spectrum component at high frequency, the requirement of data length can be in excess of practical data length, and the aliasing...

Synthetic Seismograms: Part 7. Geophysical Methods

Kari Rekoske, David Hicks

AAPG Special Volumes

... sample intervals to reduce computation time and to smooth them without aliasing the log values. 3. The resulting acoustic impedance curve is then used...

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...

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...

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...

Microseismic imaging with three-component borehole sensors

Jakob B. U. Haldorsen

International Meeting for Applied Geoscience and Energy (IMAGE)

... into a lower (aliased) frequency. Analogous to this, spatial aliasing is said to occur when a propagating waveform is measured at spatial intervals...

Key Technologies for Processing of Seismic Data in Gas Cloud Area

Search and Discovery.com

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...

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...

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...

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...

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...

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...

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...

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...

Unsupervised frequency…space domain deep learning framework for reconstructing 5D seismic data

Gui Chen, Yang Liu, Haoran Zhang, Mi Zhang, Yuhang Sun

International Meeting for Applied Geoscience and Energy (IMAGE)

...Unsupervised frequency…space domain deep learning framework for reconstructing 5D seismic data Gui Chen, Yang Liu, Haoran Zhang, Mi Zhang, Yuhang Sun...

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...

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...

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...

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...

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...

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...

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...

Robust reconstruction via orthogonal matching pursuit with Fourier operators

Ji Li, Mauricio D. Sacchi

International Meeting for Applied Geoscience and Energy (IMAGE)

... are often poor due to spatial aliasing. Second, separating the signal from noise is hard when one works with one frequency slice at a time. This paper...

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...