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The AAPG/Datapages Combined Publications Database
Showing 19,842 Results. Searched 196,436 documents.
Observations of Azimuthal Anisotropy in Prestack Seismic Data, #41572 (2015).
David Gray
Search and Discovery.com
... of azimuthal anisotropy in both land and marine prestack P-wave seismic data. Method The COCA cube extends the common offset stack by adding the third...
2015
Hydrodynamic Interpretation of High Energy Wave-dominated Shoreface Successions, Cretaceous Mount Garfield/Illes Formation, Colorado; #50378 (2011)
Jesse Thompson and Diane Kamola
Search and Discovery.com
.... and Sherwood, C. R. (2006) Calculating wave-generated bottom orbital velocity from surface wave parameters: Computers and Geosciences, v. 34, p...
2011
Polarization Filter by Eigenimages and Adaptive Subtraction to Attenuate Surface-Wave Noise; #41565 (2015)
Stephen Chiu, Norman Whitmore, Michael Gurch
Search and Discovery.com
... is a time and offset variant window based on the surface-wave velocity. Within the window of a single station, surface wave noise represents the most...
2015
ABSTRACT:MULTICOMPONENT OBC (4C) PRESTACK TIME IMAGING OVER PAMBERI, LRL BLOCK, OFFSHORE TRINIDAD
Tony Johns, Carmen Vito and Raul Sarmiento
Geological Society of Trinidad & Tobago
... the compressional P-wave and mode- converted PSv-wave, is provided. Mode-converted shear-wave data acquired from 4C surveys allow for imaging where...
2007
Abstract: Microseismic Event Location Accuracy Enhancement using Anisotropic Velocity Models; #90172 (2014)
Michael Jones, Richard Parker, Shawn Maxwell
Search and Discovery.com
...Abstract: Microseismic Event Location Accuracy Enhancement using Anisotropic Velocity Models; #90172 (2014) Michael Jones, Richard Parker, Shawn...
2014
Effective Use of High Density VSP Measurements to Predict Pore Pressure and Estimate Mud Weight Ahead of Drilling in the Mahakam Delta, Indonesia
Mohammed Badri, Stephane Gazet, Gregoire de Tonnac
Indonesian Petroleum Association
.... The VSP corridor stack was inverted to acoustic impedance log and then combined with travel time data to convert to P-wave velocity and depth. The inverted...
2005
Segregating Porosity-Permeability Transform Using Elocity and Pore Structure in Carbonate Rock
Albertus Ditya, Gregor P. Eberli, Don McNeill, James Klaus
Indonesian Petroleum Association
... the length of a sample and one-way travel time. Ultrasonic P-wave velocity (Vp) and two orthogonally polarized independent S-wave velocities (Vs1, Vs2...
2015
The Use of Modern 3D Seismic Data Processing Techniques, 5D Interpolation, and Anisotropic PSTM to Improve Existing 3D Data in South Louisiana Data—Pulling the Scales from our Eyes; New Truth from Existing Datasets
John Asma, John Stevens, Sukhdev Hyare, Dave Spaulding
GCAGS Transactions
... of the earth in time or depth. The process reverses the wave propagation defined by the wave equation. Whether Kirchhoff or wave equation techniques are used...
2013
Abstract: Time-Reversal Extrapolation for Microseismic Event Localization; #90224 (2015)
Zhenhua Li and Mirko van der Baan
Search and Discovery.com
... for microseismic event localization. Traveltime based methods require P- and S- wave first arrival picking before further processing. This type of method does...
2015
Seismic Foldout: FWI Imaging Under Complex Geological Anomalies
Adriana Citlali Ramirez, Simon Baldock, Stuart Fairhead, TGS
GEO ExPro Magazine
... as a reduction in p-wave velocity. The spatial distribution of the CO2 can be seen in the depth slices at 900 m. The FWI Image in Figs 3b and 3e shows...
2023
The Array Sonic .... A New Technique for Acoustic Measurements
A. James
Indonesian Petroleum Association
... at the formation-mud interface called head-waves, provided the conditions of hard or "fast", formation (Vp > Vs > Vm where Vm is the mud-wave velocity...
1989
PSDM for Unconventional Reservoirs? A Niobrara Shale Case Study
Morgan P. Brown, Joseph H. Higginbotham, Dave List, Chris Lang
Unconventional Resources Technology Conference (URTEC)
... anisotropic PSDM. Azimuthal velocity analysis using Wave Equation PSDM (WEM) azimuth angle gathers indicates a very weak level of overburden azimuthal...
2013
PSDM for unconventional reservoirs? A Niobrara Shale case study; #80405 (2014)
Morgan P. Brown, Joseph H. Higginbotham, Cosmin Macesanu, Oscar E. Ramirez, Dave List, Chris Lang
Search and Discovery.com
... Niobrara to within 4 feet on a new well, but we show enough variation in Thomsen δ to justify anisotropic PSDM. Azimuthal velocity analysis using Wave...
2014
Seismic Refraction Studies in Gulf of California
Richard P. Phillips
AAPG Special Volumes
... of the line is used to determine the velocity of the compressional sound wave through hat layer, and the intercept of the line with the time axis is used...
1964
Kinematics of Sand Avalanches Using Particle-Image Velocimetry
Michael Tischer , Marcus I. Bursik , E. Bruce Pitman
Journal of Sedimentary Research (SEPM)
... is a necessary condition for the occurrence of these flows. We measured for the first time the surface-velocity field in avalanches propagating at angles...
2001
Frequency-dependent reflection characteristics of single thin layer and waveform inversion
Zhengyang Kuai, Danping Cao, Chao Jin
International Meeting for Applied Geoscience and Energy (IMAGE)
... on the reflectivity method. A pre-stack waveform inversion method based on LM algorithm is proposed to directly predict parameters such as P-wave velocity, S-wave...
2023
Interpreting Paleoenergy Levels from Sediment Deposited on Ancient Wave-Dominated Shelves
H. Edward Clifton
CSPG Special Publications
..., the kinetic energy is proportional to the square of the fluid velocity. The two concepts can be linked through wave theory. Airy theory, for example...
1986
EXTENDED ABSTRACT: Sub-basalt imaging from a wave propagation point of view; #90022 (2002)
Richard Hobbs, Francesca Martini
Search and Discovery.com
...EXTENDED ABSTRACT: Sub-basalt imaging from a wave propagation point of view; #90022 (2002) Richard Hobbs, Francesca Martini AAPG Search and Discovery...
2002
Abstract: Trace Interpolation and Elevation Statics by Conjugate Gradients; #90172 (2014)
Marcus Wilson, Robert J. Ferguson
Search and Discovery.com
... to the scalar wave equation in homogeneous media (Gazdag and Sguazzero, 1984). To accommodate velocity variation in depth, the algorithm is run recursively...
2014
High-Resolution Anisotropic Earth Model Building on Conventional Seismic Data Using Full-Waveform Inversion: an Offshore Australia Case Study
Bee Jik Lim, Denes Vigh, Stephen Alwon, Saeeda Hydal, Martin Bayly, Chris Manuel, Dimitri Chagalov, Gary Hampson, Dimitri Bevc
Indonesian Petroleum Association
... the complexity of the overburden consists of several thin multilevel channel systems filled with a combination of anomalously high or low velocity sediments...
2014
Abstract: Near-Surface Volcanic Rocks in the SE Nechako Basin, BC: Results of Interpretation of Seismic Reflection Data using First-Arrival Tomographic Inversion; #90171 (2013)
Nathan Hayward and Andrew J. Calvert
Search and Discovery.com
..., Burnaby, BC, V5A 1S6 Summary Near-surface estimates of P-wave velocity are derived from the tomographic inversion of seismic firstarrivals...
2013
Acoustic approximation VTI reverse-time migration using pseudo-depth mapping method
Xinwen Zhang, Jianping Huang, Zhenchun Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... instead of depth, thus eliminating the inherent ambiguity of analyzing vertical P-wave velocity from surface seismic data. Besides, Alkhalifah (2003...
2023
Problems in Reflection Seismology
G. H. Westby
Tulsa Geological Society
... deal primarily with only the longitudinal. 'The velocity of travel of a longitudinal wave in rocks may be represented by the formula where I...
1934
Marine Seismic Sources: Part II: Air-Gun Arrays for Non Experts
Lasse Amundsen, Martin Landrø
GEO ExPro Magazine
..., low-frequency wave starting at T0=7.70 s is called the ground wave because it is closely related to the sediment sound velocity. The lowest frequency...
2010
Abstract: Anisotropy Measurements in a Multi-faced Core Sample by using Pulse Transmission Method; #90174 (2014)
Jaime Meléndez Martínez, Douglas R. Schmitt, and Randolph Kofman
Search and Discovery.com
... through a sample is then picked from the recorded waveform. Knowing the length of the sample, the velocity of the wave can be easily calculated. AAPG...
2014