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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

The Role of Regional Seismic Surveys in the Exploration of the North West Shelf

J. Ostby, C. Johnston

Petroleum Exploration Society of Australia (PESA)

... of the zones of interest on the seismic section are of much lower frequency content than 60 Hz, and so returning signals are unlikely to generate aliasing noise...

Aspects of Seismic Resolution: Chapter 1

R. E. Sheriff

AAPG Special Volumes

... considerations. However, on migrated sections other factors become important, such as noise on the unmigrated section, spatial aliasing, migration aperture...

Recognition of Subtle Features in Geologic Maps

J. E. Robinson, D. F. Merriam

CSPG Special Publications

.... This is the aliasing error which reaches a probable 100% at the limiting frequency. In addition to the aliasing error there is the random error...

Design of the Acoustic Zoom Method for Non-Specular Backscatter Imaging of the Eagle Ford Formation, #41495 (2014).

J. Guigne, S. Azad, C. Clements, A. Gogacz, W. Hunt, A. Pant, J. Stacey

Search and Discovery.com

...% coherent. Spectral whitening was applied to the vertically stacked traces to flatten the high frequency content of the acquired dataset. Power specta...

Results of a Vibroseis Sourced 3D Seismic Survey, Phetchabun Basin, Thailand

David Remus, Rex Prosser

Southeast Asia Petroleum Exploration Society (SEAPEX)

... would not resolve the major problem in this area, which is fault aliasing (i.e. fault frequency is still less than line spacing). Figure 3 shows...

Quality Data at a Reduced Price: Innovative Approaches in 3-D Acquisition and Processing

Mars E. Semaan, Michel F. Bee, Maryanto, Gerard Dufourd, Eddy A. Sentani

Indonesian Petroleum Association

... to achieve the highest resolution without suffering aliasing in order to recover steep high frequency dips A two-step migration scheme to correctly...