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The AAPG/Datapages Combined Publications Database
Showing 73,077 Results. Searched 200,293 documents.
Application of Seismography to Geological Problems
Eugene McDermott
AAPG Bulletin
.... The average velocity through the medium above the reflecting layer is a function of the depth of this layer. As a result, the path of the disturbance...
1931
Structure Interpretation Problems of a Lower Miocene Reef Associated with a Shallow Low Velocity Anomaly, North Sumatra
Peter Walker, Masrizal Maas, Michael D. Burnaman
Indonesian Petroleum Association
... which standard processing, using a stacking velocity function, can not fully exploit. The increase in amplitude of the base reef reflection on the far...
1986
One-way full-waveform inversion using frequency-domain model extension
Rustam Akhmadiev, Biondo Biondi, Robert G. Clapp
International Meeting for Applied Geoscience and Energy (IMAGE)
... domain by using slowness-impedance parametrization (Equation 7). We minimize the objective function in the Equation 11 using non-linear conjugate...
2024
Unlocking the Potential of Conventional Narrow Azimuth Data by Full-Waveform Inversion: a Deep Carbonate Imaging Case Study, Offshore Indonesia
Jun Wang, Yonghe Guo, Putri Supriandini, Bahrul Yusrie, Natalia Anggriani
Indonesian Petroleum Association
... velocity update down to 3.5 km depth with only a 3 km cable length, which shows the great potential of TLFWI using NAZ short offset data. Wang, P...
2021
Seismic velocity detrending and well calibration workflow
Gastón Bejarano Gerke
International Meeting for Applied Geoscience and Energy (IMAGE)
... to estimate a linear trend for calibration Finally, the final velocity-layer-cake model can be constructed using these calibrated velocities for each...
2024
About the importance of the horizontal components of the wavefield for a well-constrained velocity inversion: 3-C versus 1-C inversions
Isabelle Dumont, Sophie Beauprêtre, Anaïs Lavoué, Dan Hollis, Chloé Gradon
International Meeting for Applied Geoscience and Energy (IMAGE)
..., and the trade-off between depth and velocity. Measuring Rayleigh and Love wave can also highlight anisotropy. Finally, for most studied cases, a better...
2024
Abstract: Simultaneous P-P and P-S Waveform Inversion Algorithm Using Pre-Stack Time Imaging Method ; #90187 (2014)
Hassan Khaniani, John C. Bancroft, and Eric von Lunen
Search and Discovery.com
.... In this approximation the associated traveltimes are calculated from the Root Mean Square (RMS) velocity. The amplitude function is obtained using an estimation...
2014
Abstracts: Near-surface Velocity Model Building and Statics in Permafrost Regions; #90173 (2015)
Tianfei Zhu, Yan Yan, and Jon Downton
Search and Discovery.com
...-velocity zone if the deep velocity is less than the velocity at depth D such as case C in Figure 1. The low-velocity zone in this case can only...
2015
P-Wave Impedance, S-Wave Impedance and Density from Linear AVO Inversion: Application to a VSP Data from Alberta
Faranak Mahmoudian
Search and Discovery.com
... approximations for different offsets, at a particular depth under consideration, can be used to express a linear system of 2n linear equations ( n being...
Unknown
P-Wave Impedance, S-Wave Impedance and Density from Linear AVO Inversion: Application to a VSP Data from Alberta
Faranak Mahmoudian
Search and Discovery.com
... approximations for different offsets, at a particular depth under consideration, can be used to express a linear system of 2n linear equations ( n being...
Unknown
Improved channel imaging using full-waveform inversion for deepwater Lingshui giant gas reservoir in South China Sea
Tao Wu, Dun Deng, Zijing Gong, Jie Cui, Rong Li, Lianlian Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
... a highresolution velocity model, and successfully reduce depth uncertainty and improve image accuracy. This approach interactively integrates adjustive FWI, least...
2024
Application of Advanced Depth Imaging Technology in Shallow Water Offshore Indonesia
Michael Gidding, Suyang Chen, Steven Wiseman, Moch Asrori, Richard Bolton
Indonesian Petroleum Association
... and 3m depth interval) using this velocity model showed substantial improvements in imaging with sharper fault definition, increased event continuity...
2012
A strategy for acoustic impedance direct inversion in depth domain
Ruiqian Cai, Chengyu Sun, Shizhong Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... with constant velocity. In essence, the pseudo-depth domain inversion is carried out in transform domain just like the inversion with DTDT. To sum up...
2022
Sand Bodies Connectivity Analysis Utilizing Measured Pore Pressure in Normal Pressure, Offshore Bohai Bay Basin, China, #42106 (2017).
Qian Geng, Xu Changgui, Niu Chengmin, Yang Bo, Yang Haifeng, Jia Zhen,
Search and Discovery.com
... derivation transforming the linear relation between the pressure and depth into the inverse proportional function. The properties of inverse...
2017
Abstract: Seismic Amplitude Measurement for Primary Lithology Estimation (SAMPLE): Case Histories From Tertiary Western Basins
G. S. Gassaway
Earth Science Bulletin (WGA)
... two media are a function of six elastic parameters. P-wave velocity, Poisson’s ratio, and bulk density are the three elastic parameters in each media...
1984
Abstract: Time-Lapse FullWaveform Inversion Application To Seismic Monitoring Of CO2 Sequestration; #90224 (2015)
Wubshet Alemie
Search and Discovery.com
... sequestration model. A time-lapse velocity model is generated taking into account reservoir conditions and using Biot-Gassmann fluid substitution technique...
2015
Abstract: Slant-Wave Stack, by Jon F. Claerbout, Philip S. Schultz, Raul Estevez; #90976 (1976).
Search and Discovery.com
1976
Seismic Velocity Dispersion and the Petrophysical Properties of Porous Media
Search and Discovery.com
... the model fitting for the velocity dispersion data observed in the uncorrelated vibrator sweep received at the depth 1085 m. Compared with the linear...
2013
A graph-space optimal transport FWI approach based on κ-generalized Gaussian distribution
Sérgio Luiz E. F. da Silva, Giorgio Kaniadakis
International Meeting for Applied Geoscience and Energy (IMAGE)
... are compared using an objective function, usually based on the least-squares method (Virieux and Operto, 2009). FWI is a robust methodology that significantly...
2023
Use of Seismic-Derived Velocities for Stratigraphic Exploration on Land: Seismic Porosity and Direct Gas Detection: Chapter 4
Norman S. Neidell, J. H. Beard, Ernest E. Cook
AAPG Special Volumes
... Geophysicists, 266 p. Taner, M. T., and F. Koehler, 1969, Velocity spectra-digital computer derivation and applications of velocity function...
1985
Seismic Velocity Sensitivity Analysis: Gulf of Mexico Example, Pony Field; #50479 (2011)
Ryan Mann, Henry Zollinger, Steve Checkles
Search and Discovery.com
... is relatively low relief therefore small changes in the migration velocity cause differences in the depth structure that translate to large changes in both...
2011
Synthetic Seismograms from Vibracores: A Case Study in Correlating the Late Quaternary Seismic Stratigraphy of the New Jersey Inner Continental Shelf
Dominic Esker , Robert E. Sheridan , Gall M. Ashley , Jeffrey S. Waldner , David W. Hall
Journal of Sedimentary Research (SEPM)
.... A linear function relating median grain size and density, and a polynomial function relating median grain size and compressional seismic wave velocity, were...
1996
Velocity and Velocity
M. Al-Chalabi
Petroleum Exploration Society of Australia (PESA)
... or is considered possible, both being considered to be optimum/correct: Carry out vertical depth conversion using the most accurate velocity field...
2000
Visco-Acoustic Full-Waveform Inversion: A Case Study to Resolve High-Resolution Shallow Channel Absorption, Offshore Indonesia
Jun Wang, Yonghe Guo, Putri Supriandini, Kelik Moersidin, Rahmad Hidayat
Indonesian Petroleum Association
...-resolution velocity and Q models of the shallow channel system, providing superior imaging when using Qcompensated pre-stack depth migration (Q-PSDM...
2022
-- no title --
user1
Search and Discovery.com
... from the depth domain to the time domain using the FBTIVM and the replacement velocity respectively. The difference between these two scaled values...
Unknown