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The AAPG/Datapages Combined Publications Database
Showing 20,858 Results. Searched 200,616 documents.
Using Reflected Phases to Improve Depth Resolution of Microseismic Source Locations from Single-Well Observations
James Rutledge, Nobukazu Soma
Unconventional Resources Technology Conference (URTEC)
... beneath the oil reservoir within a salt layer when using direct P- and S-wave arrivals. We identified two multiple reflected phases and, through a series...
2013
The emergence and impact of scientific machine learning in geophysical exploration
Umair bin Waheed
International Meeting for Applied Geoscience and Energy (IMAGE)
... as a forward solver for the eikonal equation and the wave equation. For example, Waheed et al. (2020) and Smith et al. (2020) showed how PINNs could be used...
2023
Extrapolated surface-wave dispersion inversion
Hongyu Sun, Laurent Demanet
International Meeting for Applied Geoscience and Energy (IMAGE)
... Abstracts, 1855–1859, doi: https://doi.org/10.1190/segam2020-3418624.1 Li, J., Z. Feng, and G. Schuster, 2017, Wave-equation dispersion inversion...
2022
Abstract: The Value of Re-Processing Legacy Onshore Seismic Data with Advanced Workflows; #91209 (2025)
Ahmed S. Barakat, David M. McCarthy, Shady Hassan, Mostafa Khalil, Oleg Khakimov, Khyzer Munir, Andrew Sutherland, Mokhles Ahmed
Search and Discovery.com
... energy and a matching pursuit radon was applied to attenuate residual noise. Wave equation deconvolution (Poole et al., 2022) using least squares multiple...
2025
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)
... that affect the seismic data are likely to be the low compressional and shear wave velocities generated by gassy sediments in the mud layer, and the high...
2006
Application of the New Sonic-Based Saturation Model to Unconventional Oil Reservoirs
Sheyore John Omovie, Kent Newsham
Unconventional Resources Technology Conference (URTEC)
... not rely on formation resistivity, brine resistivity, or electric properties to estimate water saturation. Instead, it utilizes P-wave and S-wave...
2025
Wave Energy Generators as a Viable Alternative for Offshore Platform Decommissioning and Energy Recovery
Mohamad Yafi Zachary
Indonesian Petroleum Association
... (T). The equation for wave energy potential came from the general equation of wave train energy, E=ρgH2, where ρ is the density of the water and H is the wave...
2024
Amplitude inversion of OBS direct arrivals for seabed elastic properties
James Gaiser, Moacyr de Souza Bazerra, James Simmons
International Meeting for Applied Geoscience and Energy (IMAGE)
... wave (P-wave) methods that use mirror migration, velocity analyses and tomography are not available for shallow converted P- to S-wave (PS-wave) data...
2022
Field Experiments on Vertical Mixing of Sand in the Surf Zone
Nicholas C. Kraus
Journal of Sedimentary Research (SEPM)
... to account for breaker type or grain size (King 1951). The above relation holds for moderate wave conditions; it is not obvious that Equation 5...
1985
Ebb-Tidal Delta Morphology and Sediment Supply in Relation to Seasonal Wave Energy Flux, North Inlet, South Carolina
Robert J. Finley
Journal of Sedimentary Research (SEPM)
...Ebb-Tidal Delta Morphology and Sediment Supply in Relation to Seasonal Wave Energy Flux, North Inlet, South Carolina Robert J. Finley 1978 Vol. 48...
1978
Modeling the effect of gas adsorption on elastic properties of unconventional shale reservoir
Jingyan Chen, Luanxiao Zhao, Tianrui Hu, Jinwan Zhu, Yirong Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... the classical Biot-Gassmann equation that establishes the relationship between the undrained bulk modulus and drained bulk modulus at the low-frequency limit...
2022
Processes Affecting Sand Transport on a Storm-Dominated Shelf
Christopher E. Vincent
CSPG Special Publications
... the wave boundary layer (of thickness δW) equation (3) becomes where Kbc is the new roughness that the bed ‘sees’ (Kbc ***Kb) and U *c...
1986
Elastic Wave Propagation Mechanisms in High-Temperature Deep Hydrocarbon Reservoirs Exhibiting Three-Phase Fluids
Jidong Gao, Bin Yuan, Wei Zhang, Hongbin Zhang, Caili Dai, Baohua Wang, Yuyang Liu
Unconventional Resources Technology Conference (URTEC)
... is the consolidation parameter. 1 - ctfk 0 Wave Equations for Three-Phase Thermoporoelastic Media The Lagrangian equation is defined as the difference...
2025
Geological Factors Influencing Porosity Estimates From Velocity Logs
Roberto Sarmiento
AAPG Bulletin
... the variables mentioned. The resulting equations give more accurate porosity estimates than the time-average equation, which is in widespread use...
1961
Solid substitution: theory versus experiment
Yongyang Sun, Maxim Lebedev, Vassili Mikhaltsevitch, Stanislav Glubokovskikh, Stefan Iglauer, Boris Gurevich
Petroleum Exploration Society of Australia (PESA)
.... INTRODUCTION Fluid substitution using Gassmann equation (1951) is widely employed in geophysical practice. It is proved to be an effective way...
2018
Obtaining near-surface equivalent Q value from uphole survey data
Chaofeng Zhao, Wei Zhang, Jiantao Tian, Liying Ren, Qing Zhang, Jianyu Zhao
International Meeting for Applied Geoscience and Energy (IMAGE)
..., and establish the near-surface equivalent Q value equation that eliminates the inconsistency of the seismic wavelets and geophone coupling effect...
2024
Abstract: Workflows for Sweet Spots Identification in Shale Plays Using Seismic Inversion and Well Logs; #90187 (2014)
Yexin Liu
Search and Discovery.com
... and geological core analysis can easily help to calculate these important elements around the borehole. For example, the Passey equation (Passey, 1990) can...
2014
3D anisotropic wavefield simulation with an advanced time-space domain temporal high-order SGFD solution
Xinquan Wang, Long Wu, Yunshan Lei, Panpan Lv, Huibing Zhao, Xiaoling Guo
International Meeting for Applied Geoscience and Energy (IMAGE)
...) to solve the 3D acoustic wave equation in vertical transversely isotropic (VTI) media. The new stencil is a valid combination of several off-axial grid...
2024
Abstract: Efficency and Accuracy Enhancement for One-way Wave Equation Migration Through Improved Mapping Function in the Time-shift Imaging Condition; #90171 (2013)
Mark Ng
Search and Discovery.com
...Abstract: Efficency and Accuracy Enhancement for One-way Wave Equation Migration Through Improved Mapping Function in the Time-shift Imaging...
2013
A new way to enhance the resolution of surface seismic data
Qian Yu, Qing Zhou, Jiaguo Ma, Tao Yan, Lien Bian
International Meeting for Applied Geoscience and Energy (IMAGE)
... shows that this method can improve resolution of surface seismic profile. Additionally, continuity of event, characteristic of wave group and quality...
2022
Beam Migration for Imaging of Complex Structures
Karl Schleicher, John Sherwood, Lynn Comeaux, Mazin Farouki
Indonesian Petroleum Association
... iterations of tomographic velocity updating. Results from the Beam migration are proving to be superior to Kirchhoff and wave equation results...
2009
Simulation of the Seismic Records (DAS) in a Borehole Throughout CO2 Storage Procedures
José Pulido, Yiyu Ni
Unconventional Resources Technology Conference (URTEC)
... Engineering. Fornberg, B., & Driscoll, T. A. (2011). A fast Fourier transform based solver for the Helmholtz equation with variable wave number...
2023
Abstract: Simplified Processing of Converted Wave Data; #90224 (2015)
John C. Bancroft and Thais Guirigay
Search and Discovery.com
...Abstract: Simplified Processing of Converted Wave Data; #90224 (2015) John C. Bancroft and Thais Guirigay Datapages/Search and Discovery Article...
2015
Prestack true-amplitude angle-domain viscoelastic least squares reverse time migration
Yue Wang, Yang Luo, Peng Shen, Jingru Chen, Guangchi Xing, Ao Cai, Mark Fan, Guojian Shan, Lin Zhang, Xiaoting Lou, Zhengyun Zhou
International Meeting for Applied Geoscience and Energy (IMAGE)
... in the real earth propagation. In this paper the memory-variable approach (Carcione 1998) for 2nd-order TTI wave equation is used for the forward and adjoint...
2024
Time-Lapse Refraction Seismic I: A Complementary Monitoring Method?
Martin Landrø, Lasse Amundsen
GEO ExPro Magazine
... in the reservoir layer will change, and hence the refraction angle (and the traveltime) for the refracted wave will also change. V Ø 0 0 R 1 2 1.478 km...
2017