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The AAPG/Datapages Combined Publications Database
Showing 765 Results. Searched 200,357 documents.
Recent Advances in Borehole Seismic
W. L. Nutt
Indonesian Petroleum Association
..., bandpass filter and true amplitude recovery are applied. A normal moveout (NMO) correction is then applied using the velocity function derived from...
1984
Imaging Subsurface Structures Under Gas Clounds by Multi-Component Technology
Xiaogui Miao, Loh Fong Cheen, Libo Zi, Jing Du, Magali Beele, Jacques Bonnafe, Natalia Anggriani, Gilles Vallon, Claudio Strobbia
Indonesian Petroleum Association
.... Large azimuthal variations of time and amplitude are observed, probably due to the sharp lateral velocity variation. VRMS stacking velocity with layer...
2014
Abstract: DMO Accuracy Requirements for AVO Analysis
Craig J. Beasley
Geological Society of Malaysia (GSM)
...: normal-moveout (NMO) done with dip-corrected velocity, followed by an appropriate velocity-dependent dip filter (Jakubowicz, 1990). We first analyse...
1990
Abstract: Seismic Data Processing in Anisotropic Media, by V. Celis; #90951 (1996).
Search and Discovery.com
1996
Abstract: A Robust and Practical Approach to VTI Parameter Estimation in a Non-Structural Setting: Case Study from the Vulcan Field, Alberta; #90172 (2014)
Mike Perz, Warren Pearson, Darren Betker, Earl Heather
Search and Discovery.com
... shales have documented velocity anisotropy in the order of 12%, further confirmed by the analysis of walkaway VSP data. Correcting for the non...
2014
Abstract: Practical Examples of the Implementation of Surface Related Multiple Elimination for Land Data; #90286 (2017)
Philip J. Thompson
Search and Discovery.com
... from both structured and flat areas show the robustness of LSRME. Traditionally, multiples in land data were handled by dip filtering, moveout...
2017
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)
... offsets reduces noise in the data. Multichannel data can also provide information on seismic velocity and amplitude versus offset. In order to make...
1999
7.0 The Structural Significance of Seismic Velocity - A Progress Report
P. E. Gretener
AAPG Special Volumes
... of CDP SHOOTING demanding large offsets as a matter of routine. It has thus become possible to determine seismic velocity using normal moveout (NMO...
1981
Some Recent Advances in Exploration Geophysical Techniques and Data Processing
Edward F. Zagst, C. L. Robinson
GCAGS Transactions
... in the zone of primary interest will remain in a lower average velocity environment than the true reflection. Normal moveout is a function of the square...
1965
DAS dispersion image analysis for landslide monitoring
Steve Cole, Paul Clarkson, Martin Karrenbach, Victor Yartsev
International Meeting for Applied Geoscience and Energy (IMAGE)
... computed in the field. We would like to se if velocity changes can be identified directly from the dispersion images. stacking the data as a function...
2022
A Comparative Study of Wave Equation Multiple Suppression to Conventional Tau-p Deconvolution and Radon Multiple Attenuation Methods
Kriyanti Setiyono, Ken H. Matson
Indonesian Petroleum Association
... prior to the stacking process. Radon Radon demultiple exploits differential moveout to discriminate between multiples and primary events. Initially...
2000
Fault Interpretation Problems in the Southeast Barrow Sub-Basin
R. K. Whyte
Petroleum Exploration Society of Australia (PESA)
... 13b shows the corresponding COP gather. This is a simple geological situation with no lateral velocity variation. The moveout curve is smooth...
1994
Pore-Pressure Prediction in the Permian Basin Using Seismic Prestack Inversion
Colin Sayers, Lennert den Boer
Unconventional Resources Technology Conference (URTEC)
.... In such reservoirs, changes in lithology occur over vertical depth intervals too small to be resolved using seismic velocities derived by means of normal moveout...
2019
Getting it Right the First Time in the Ceduna Sub-Basin: Regional and Target Depth Imaging in a Frontier Setting
Weidi Koh
Australian Petroleum Production & Exploration Association (APPEA) Journal
... optimised velocity model building (VMB) workο¬ow improved turnaround time while, at the same time, being amplitude versus offset (AVO) compliant. Third...
2017
Understanding the causes of low frequency shadow below gas hydrates
Ayman Noor M. Qadrouh, Saad Alajmi
Petroleum Exploration Society of Australia (PESA)
... causes of LFS are the presence of free gas or normal moveout (NMO) stretching. In order to have a deep understanding of the low frequency shadow causes...
2019
Abstract: Subsalt Velocity Estimation Using Wave-Equation Tomography with Surface Offset Gathers; #90319 (2018)
Yujin Liu, Yan Wu, Xiongwen Wang, Tong W. Fei, Yi Luo
Search and Discovery.com
...Abstract: Subsalt Velocity Estimation Using Wave-Equation Tomography with Surface Offset Gathers; #90319 (2018) Yujin Liu, Yan Wu, Xiongwen Wang...
2018
Abstract: Salt Shape Tomography; #90254 (2016)
Patrice Guillaume, Olivier Hermant, Stanislaw Warzocha
Search and Discovery.com
... at their boundaries with surrounding media. The data to invert mainly consists of residual moveout (RMO) information picked below the strong velocity...
2016
Abstract: A Comparison of Standard Migration with EOM for Hussar Data; #90174 (2014)
Thais A. Guirigay, John C. Bancroft, and J. Helen Isaac
Search and Discovery.com
... is the application of a simplified Kirchhoff migration on the CSP, that consists of scaling, filtering, normal moveout (NMO) and stacking. CSP gathers...
2014
High Performance Computation by Graphics Processor Unit Technology for Geophysical Seismic Signal Processing, #40727 (2011)
Sunjay Sunjay
Search and Discovery.com
... filtering would help, or maybe it needs a minor velocity tweak and a test of the stacking parameters to optimize the poststack trace or improve AVO...
2011
Long-Offset Approximations to NMO Function for a Layered Subsurface
E. Blias
Search and Discovery.com
.../depth ratio. Conventional velocity analysis uses hyperbolic approximation for the reflection traveltimes: t( x) 2 T02 x 2 VRMS (1) Here T0...
Unknown
Long-Offset Approximations to NMO Function for a Layered Subsurface
E. Blias
Search and Discovery.com
.../depth ratio. Conventional velocity analysis uses hyperbolic approximation for the reflection traveltimes: t( x) 2 T02 x 2 VRMS (1) Here T0...
Unknown
Constrained tomography for improved presalt elastic full-waveform inversion
Yaofeng He, Xu Li, Young Ho Cha, Partha Routh, Inma Dura-Gomez, Carey Marcinkovich
International Meeting for Applied Geoscience and Energy (IMAGE)
... π πππ is the residual moveout picked from migrated gathers, π³ πππ is the tomography matrix generated by raytracing through the migration velocity model...
2022
The Geophysicist Communicating with Seismic Processing
R. E. Sheriff
Southeast Asia Petroleum Exploration Society (SEAPEX)
... indicate the semblance for various stacking velocity values as a function of arrival time. The graphs at the top show the output amplitude...
1980
How to Improve the Definition of Seismic Reflection Data
D. Michon, R. Garotta
Indonesian Petroleum Association
... to the normal moveout. Fig. 2. Let us consider a one second two-way time reflection. For a few offsets the apparent horizontal velocity, as given by the slope...
1979
Simultaneous 3D 4C - OBC & VSP Walkaway Survey in the Attaka Field, East Kalimantan, Indonesia
Bill Borland, Phil Johnston, Mike Reblin, Suta Vijaya, Omar Kulbrandstad, Muhammad Idrees, Scott Leaney, Jan van de Mortel
Indonesian Petroleum Association
... data was acquired to determine the shear wave velocity structure in the area. This included a 3D VSP acquisition which was done simultaneously...
2000