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The AAPG/Datapages Combined Publications Database
Showing 108 Results. Searched 195,452 documents.
Clari-Fi: Broadband Data from Conventional Streamer Acquisition
Nic Woodburn, Tom Travis, Hassan Masoomzadeh, TGS
GEO ExPro Magazine
... noise. Techniques employed include coherent noise attenuation using a time and space variant f-x apparent velocity dip filter; several iterations...
2012
Abstract: An Analysis of the Benefits of 3D Pre-Stack Time Migration (Paper 11)
Peter Whiting
Geological Society of Malaysia (GSM)
... the apparent velocity too much and actually results in a slighter slower velocity than necessary. When dipping and flat events cross, the dipping...
1996
P- and S-Wave Velocity Structures of the Sigsbee Abyssal Plain of the Gulf of Mexico from Ocean Bottom Seismometer Data
Sangmyung D. Kim, Seiichi Nagihara, Yosio Nakamura
GCAGS Transactions
... the bottom of the uppermost layer, has an apparent velocity of 3.0-3.2 km/s. Phase 2 contains the refracted arrivals from the bottom of the second layer...
2000
Abstract: Confidence and Accuracy of Microseismic Images; #90171 (2013)
S.C. Maxwell
Search and Discovery.com
... that calibration events such as orientation shots are accurately located. The residuals can also be used to measure apparent velocity errors for formal...
2013
Horizontal Wave Testing, by Bob Hardage, #40502 (2010).
Search and Discovery.com
2010
Velocity Model Building Using Tilted Orthorhombic Depth Imaging for Full Azimuth Seismic Data
Yunfeng (Fred) Li, Qiaofeng Wu, Chuen-Song Chen
GCAGS Journal
...) to flatten CIGs, where β represents one individual azimuth as shown in Figure 2. For each individual azimuth, the apparent velocity in the TOR plane [x...
2013
What is Horizontal Resolution?
L. R. Denham, R. E. Sheriff
Indonesian Petroleum Association
... section. The data preserves true amplitudes, regardles of apparent velocity. The shot and receiver lie on the datum plane. Velocities The velocities...
1981
Velocity Analyses of Near Seafloor Strata Based on Multichannel Seismic Data from the Tonga Platform
Jeffrey E. Cole, Dennis M. Mann
Circum Pacific Council Publications
... series of standard data-reduction techniques. The occurrence of high-velocity strata near the seafloor and an apparent near-surface velocity...
1985
Imaging Solutions for Geophysical Challenges in South East Asia (Paper A13)
N. El Kady, Z. Mohd Dom, Y. Prasetyo, M. Bayly, G. Nyein, P. Vasilyev, N. Mat Don Ya
Geological Society of Malaysia (GSM)
... view, an apparent velocity speed-up is required (Fig 2 left ), however contrary this observation, when viewing an initial Depth stack, in a structural...
2012
Abstract: SAGD Production Monitoring by Seismic Refraction; #90172 (2014)
D. Dubucq, Tuhin Bhakta, P. Thore
Search and Discovery.com
.... Wave velocity V2 is greater than V1. If the interface is flat and horizontal, the apparent velocity of the refracted wave is equal to V2...
2014
Abstract: Estimation of Group Velocity using Slant Stack Generalized S Transform Based Method; #90174 (2014)
Roohollah Askari, Robert J. Ferguson, and Kristof DeMeersman
Search and Discovery.com
... to the linear propagation of ground roll on surface, the apparent velocity of the ground roll can be estimated by applying the slant stack transform...
2014
Deep Structure of Northern Mississippi Embayment
A. Ginzburg , W. D. Mooney , A. W. Walter , W. J. Lutter , J. H. Healy
AAPG Bulletin
... conspicuous features on the record sections of this profile is that the first arrivals with an apparent velocity of 5.95 km/sec rapidly attenuate about...
1983
Study of the Seismic Attenuation Generated by the Mud Layer in Lake Maracaibo, Venezuela
J. Perez, E. Andara, B. Malave
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... with apparent velocity between 900 m/s and 1150 m/s. The results show that the layer configuration has to be different between the zone without gassy sediment...
2006
The Application of Velocities and Models to Seismic Interpretation
G. Jarrota
Indonesian Petroleum Association
... velocities were assumed on this part of the line. Velocity horizon f is much more complicated. The apparent velocity goes from less than 3 to more than 5 km...
1977
A Report on the Renaissance of Gravity in the Deep Water Gulf of Mexico: A Practical View of Integration Methods
Brian S. Anderson, Mark E. Weber, John E. Bain
Houston Geological Society
..., the density-velocity function is used to translate the alterations into an apparent velocity cube. Figure 6 is the final result of this process. Note...
1998
Challenges to Processing, Interpretation and Depth Conversion Posed by Dynamic Statics Over the Ujung-Pangkah Field
Donald Easley, Ferry Yustiana
Indonesian Petroleum Association
...) As can be seen from the data in (Figure-3) the first later up to around 15-22m in depth has a very low apparent velocity. This velocity of around...
2009
Codes and Ciphers Simultaneous: Source Separation: PART II
Johan O. A. Robertsson, Dirk-Jan Van Manen, Lasse Amundsen, Martin Landrø
GEO ExPro Magazine
... shooting. Abma et al. (f k) diagrams to examine the direction and apparent velocity 2πf/k of seismic waves. Here (2015) suggested using a library...
2016
Structure of the Gudauta Bank According to Reconnaissance Seismic Investigations
Yu. P. Neprochnov, V. N. Moskalenko
Petroleum Geology: A Digest of Russian Literature
... of 1.5-5.0 km from the shot point in the first arrivals is registered a refracted wave P1 with an apparent velocity V* = 2.3-2.4 kmps...
1963
Advanced Approach Toward Understanding Geologically Complex Area Using MDRS (Multi-Dip CRS): A Case Study
Naoshi Aoki, Shogo Narahara, Akihisa Takahashi, Tsukasa Nishiki
Indonesian Petroleum Association
... zero-offset point so that conflicting dips can be described. MDRS also provides objectively-analyzed velocity information, which can be a useful...
2011
The Effect of Velocity Uncertainty and Attenuation on Flow Estimates From Microseismicity
Oleg V. Poliannikov, Michael Fehler, Alison Malcolm
Unconventional Resources Technology Conference (URTEC)
... frequencies are attenuated, the apparent velocity becomes lower; alternatively, arrivals are systematically picked later than they would be in the absence...
2015
Using Depletion-Zone Microseismicity to Understand Producing Volumes
Jonathan P. McKenna, Michael H. Grealy, Michael S. Blaz, Nathan M. Toohey
Unconventional Resources Technology Conference (URTEC)
... population contains events with apparent velocities up to 50 times faster than the average velocity from the fluid-induced event population. We...
2016
Seismological Discovery and Partial Detail of Vermilion Bay Salt Dome, Louisiana
E. E. Rosaire , O. C. Lester, Jr.
AAPG Bulletin
... characteristic of a shallow salt dome. The most essential feature is the more or less sudden decrease in apparent velocity shortly after Fig. 4...
1932
Refraction Shooting with Expendable Sonobuoys: GEOLOGICAL NOTES
J. Ewing , R. Leyden , M. Ewing
AAPG Bulletin
... in records 93 and 94 curve slightly, indicating they may be wide-angle reflections. Arrivals with high apparent velocity near end of profile 96 also...
1969
Repeatability Evaluation of Time-Lapse Technology Using Ultra-Stable Seismic Source; #42078 (2017)
Junzo Kasahara, Khaled Al Damegh, Ghunaim Al-Anezi, Yoko Hasada, Kei Murase, Aya Kamimura, Osamu Fujimoto, Hiroshi Ohnuma
Search and Discovery.com
... m. This is thought to be caused by the presence of velocity inversion just below the top layer. We calculated NRMSs of the first arrivals...
2017
THE RENAISSANCE OF GRAVITY
Search and Discovery.com
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