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The AAPG/Datapages Combined Publications Database
Showing 20,860 Results. Searched 200,693 documents.
Semi-supervised ground-roll wave segmentation with noise label via neural network evolution
Yinshuo Li, Wenkai Lu
International Meeting for Applied Geoscience and Energy (IMAGE)
...-supervised method for Ground-roll wave segmentation. Given that Ground-roll waves are low velocity and low frequency, the proposed method utilized a band...
2024
Unveiling and Imaging Karst Through Refined Wavefield Separation
Riaz Alai, M Afiq B Mokhtar, Yonghe Guo, Pongga Wardaya, Jun Wang , Rizki Krishna Pratama, Haryono Haryanto
Indonesian Petroleum Association
... wave field has been separated into specular reflections and diffractions. Diffraction energy, in general is much lower in amplitude and separate...
2018
Modern Gempol Sewu Deltaic System in North Central Java for Deltaic Reservoir Potential
Samuel Richard Natanael Simorangkir, Hilmi Lazuardi, Ghaitsa Rizka Myatkhan, Ivan Kristiawan, Yoshi Wiweka Praba Pudyastaawa
Indonesian Petroleum Association
... cover Damar, Kerek and Alluvium. Present day Gempol Sewu Delta is wave dominated and very abrassive. Outcrops along Gempol Sewu Delta give evidence...
2013
Laboratory Experiments on Form and Structure of Longshore Bars and Beaches
Edwin D. McKee , Thomas S. Sterrett
AAPG Special Volumes
... of Sandstone Bodies Beaches and bars have been formed during experiments conducted in a 46-foot wave tank at the Sedimentation Laboratory of the U.S. Geological...
1961
Abstract: Integration of Well Logs and Seismic Data for Prediction of Elastic Properties in a Heavy Oil Sand Reservoir: Manitou Lake, Saskatchewan; #90171 (2013)
Maria F. Quijada and Robert R. Stewart
Search and Discovery.com
... reservoir. Previous studies have shown that there is little change in the P-wave velocity at the sand/shale interface, while the shear-wave velocity...
2013
Abstract: A Phase Shift Plus Interpolation Extrapolation for Two-way Wave Equation Migration; #90172 (2014)
Jianhua Pan
Search and Discovery.com
...Abstract: A Phase Shift Plus Interpolation Extrapolation for Two-way Wave Equation Migration; #90172 (2014) Jianhua Pan AAPG Search and Discovery...
2014
Impact of an Integrated Seismic Data Processing Approach: A Case Study in Central Sumatra
Mars E. Semaan, Eddy Murhantoro, Maryanto, Achmad Bermawi, Budi Subianto, Hari Santoso
Indonesian Petroleum Association
..., or reflectivity, is the acoustic impedance, defined as the product of P-wave velocity and rock density. Spatial variations in the acoustic impedance mimic...
1992
Ultrasonic measurements of elastic anisotropy of granitic rocks for enhanced geothermal reservoirs
Mayra D. L. Carrasquilla, Jake Parsons, Teng Long, Min Sun, Yingcai Zheng, De-Hua Han
International Meeting for Applied Geoscience and Energy (IMAGE)
... MPa in ultrasonic frequency bands. As the confining pressure increases, the results demonstrate significant increases in P-wave velocity and S-wave...
2023
Physics-informed full-waveform inversion using learned wavefield solutions
Xinquan Huang, Tariq Alkhalifah, Fu Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... of the inverted velocity models. Specifically, by using the pre-trained FNO on an initial model to simulate wavefields, and then evaluating the loss over how much...
2024
Oscillation Sand Ripples Generated by Laboratory Apparatus
Martin C. Miller , Paul D. Komar
Journal of Sedimentary Research (SEPM)
... to natural progressive waves of the same periods, the velocity and pressure fields are also accurately reproduced. In the general Airy-wave solution...
1980
Experimental Investigations of Combined Flow Sediment Transport
Everett Smith, Max S. Daniller-Varghese, Paul M. Myrow, David Mohrig
Journal of Sedimentary Research (SEPM)
... the surface wave velocity was 0.02 m/s, and it decayed to near zero at the base of the ramp. This profile fits the expected exponential decay relationship...
2019
High-resolution passive surface wave tomography using natural and anthropogenic noise sources in a mineral exploration context
Daniela Teodor, Charles Beard, Laura Pinzon-Rincon, Aurlien Mordret, Franois Lavou, Sophie Beaupretre, Dan Hollis, John McBride, Pierre Bou, Florent Brenguier
International Meeting for Applied Geoscience and Energy (IMAGE)
... dispersion curves representative for limited sectors of the investigated area. We invert the average dispersion curves to S-wave velocity models using...
2022
Hydraulic fracture width determination using integration of Stoneley wave pressure testing with electrical borehole scans in FORGE Geothermal project
Brian E. Hornby
International Meeting for Applied Geoscience and Energy (IMAGE)
...Hydraulic fracture width determination using integration of Stoneley wave pressure testing with electrical borehole scans in FORGE Geothermal project...
2022
Impulse Acoustical Logging in a Cased Drill Hole
L. A. Sergeyev, A. A. Boyaroyts, V. V. Churlin, O. N. Sokolov
Petroleum Geology: A Digest of Russian Literature
..., is not satisfactory for differentiation of strata according to velocity because a wave is generated that moves along the casing and arrives...
1963
3-D Finite Difference Modeling of Microseismic Source Mechanisms in the Wolfcamp Shale of the Permian Basin
Robert Meek, Robert A. Hull, Austin Von der Hoya, David Eaton
Unconventional Resources Technology Conference (URTEC)
... 𝜕𝑥 𝑙 𝜕𝑡 Wave motion is computed by solving the boundary value problem involving these differential equations. To derive a 3D velocity model P-wave...
2015
Abstract: Effect of Thermal Shock on P and S Wave Speeds in a Low-porosity Quartz Sandstone; #90174 (2014)
Wei Xie and Douglas R. Schmitt
Search and Discovery.com
... shock, the wave velocity, elastic modulus, crack density and damage parameter show similar trends with changing pressure. Both events show a rapid change...
2014
Abstract: Shear Wave Splitting Parameter Estimation Using a Regular Distribution of Azimuths; #90187 (2014)
A. Stanton and M. D. Sacchi
Search and Discovery.com
...Abstract: Shear Wave Splitting Parameter Estimation Using a Regular Distribution of Azimuths; #90187 (2014) A. Stanton and M. D. Sacchi AAPG Search...
2014
Unfathomable: The shifting sand of wave base
Eugene C. Rankey, Christian M. Appendini
Journal of Sedimentary Research (SEPM)
... velocity components, and P and Q fluxes in the HD model. INFLUENCES ON EFFECTIVE WAVE BASE Influence of Sediment on Effective Wave Base...
2022
Temporal Variations in Beach and Nearhore Dynamics
E. H. Owens
Journal of Sedimentary Research (SEPM)
... sites are the prevailing onshore winds on the west coast and the predominance of high velocity winds out of the western quadrant. Wave height...
1977
Normalized energy-norm imaging condition for elastic reverse-time migration
Can Oren, Jeffrey Shragge
International Meeting for Applied Geoscience and Energy (IMAGE)
... a more natural approach by normalizing (a) Figure 1: P-wave velocity model used in the DAS VSP experiment. While the black dots depict the surface...
2022
Three Critical Environments Of Deposition and Their Paleogeographic Implications
John Lyon Rich
Panhandle (Texas) Geological Society
... of standing water subject to wave action, three distinct environments can be recognized, in each of which the physical conditions are entirely different...
1955
New evidence of historic and prehistoric tsunamis produced by eruptions of Augustine Volcano, Alaska - Abstract
James Beget, Leslie Amberg, Cynthia Gardner
Alaska Geological Society
... Gardner 2003 26 Historic records suggest Augustine Volcano produced a tsunami wave as much as 6–9 m high in 1883 when an eruption sent a debris...
2003
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
Flexural and Full Wave Logging Using the Low-Frequency Dipole Sonic
David E. Sharbak
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
..., natural fracture identification and porosity determination. Exploration geologists use shear wave velocity to tie two-way travel time to depth. Shear...
1994
Abstract: Depositional Systems and Oil and Gas Plays in the Late Cretaceous Olmos Formation, South Texas
Noel Tyler
Houston Geological Society Bulletin
.... This shallow, oil-proven formation was deposited on a broad, wave-influenced shelf. Sand accumulated in two depocenters. Initial deposition took place...
1986