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The AAPG/Datapages Combined Publications Database
Showing 801 Results. Searched 200,630 documents.
A shallow velocity model building using full-waveform inversion on 3D onshore dataset
Young Seo Kim, Jewoo Yoo, Tong Fei, Ali Almomin
International Meeting for Applied Geoscience and Energy (IMAGE)
...𝜔) = 2𝑖 𝐼𝑚𝑎𝑔[𝑤𝑢∗ (𝑤𝑢 − ̃ )] ̃ ̃ 𝑑 ̃∗ 𝑢 (5) where * denotes the complex conjugate and 𝐼𝑚𝑎𝑔 means the imaginary part of a complex value. In our works, we use acoustic w...
2022
Elastic-AdjointNet: A physics-guided deep autoencoder to overcome crosstalk effects in multiparameter full-waveform inversion
Arnab Dhara, Mrinal Sen
International Meeting for Applied Geoscience and Energy (IMAGE)
... formulation of the elastic wave equation. The synthetic data are compared against observed input data and the misfit is estimated. The gradient...
2022
Velocity estimation via model order reduction
Alexander V. Mamonov, Liliana Borcea, Josselin Garnier, Jrn Zimmerling
International Meeting for Applied Geoscience and Energy (IMAGE)
... (ROM) of the wave equation operator is introduced. The unknown medium is probed with pulses and the time domain pressure waveform data is recorded...
2022
Least-squares reverse-time migration with angle gathers through point spread functions
Jianyong Bai, Orhan Yilmaz
International Meeting for Applied Geoscience and Energy (IMAGE)
...-domain common image gathers (ODCIGs) are calculated from one-way wave equation and are transformed to the ADCIGs. In contrast, image-domain angle...
2022
Cross-Well Seismology: A New Production Tool
B. N. P. Paulsson, R. T. Langan
Indonesian Petroleum Association
... model based upon a producing field in the Southern San Joaquin Valley (USA). A finite difference solution to the acoustic wave equation was used...
1988
Strike Line Methodology as an Optimization to Exploring in Fold and Thrust Belts
B. A. Blake, D. Figueroa, A. Otero, R. Manceda, W. Prayitno
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... and wave equation modeling to create seismic responses from the balanced cross sections. Ray tracing is much faster but the reflections are unrealistically...
2003
Q-compensated least-squares reverse time migration by considering velocity and Q perturbations
Jinli Li, Yingming Qu, Chongpeng Huang, Zhenchun Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... equation. Finally, the correctness of the method in this thesis is demonstrated by two typical models. Theory In a viscoacoustic medium, seismic wave...
2022
2D Pre-Stack Depth Migration : Application to Inverted Grabens
C. Bunks, P. L. Pichon, L. Ben Brahim, Sekar Sakti
Indonesian Petroleum Association
... down and verification of dips are amongst the benefits of this process. Bunks, C., 1992. Optimization of paraxial wave equation operator coefficients...
1993
Multi-scale anisotropic dispersion and attenuation in VTI media with penny-shaped cracks
Yanwen Feng, Zhaoyun Zong, Guangzhi Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
... with penny-shaped cracks. Based on the proposed approach, we derive the wave equation of the model including three WIFF mechanisms (the global fluid flow...
2023
Three-Dimensional Depth Imaging of Seismic Data to Assess Subsurface Geology in Northern Utah and Southwestern Wyoming
Alvin K. Benson
Utah Geological Association
...-imaging algorithm. Typically, this is initiated by trying to solve the 3-D scalar wave equation for stacked data. Imaging would then involve a single...
1999
FWI derived reflectivity gathers in angle domain
Hu Jin, Simon Luo, Qingqing Liao, Xukai Shen, Ganyuan Xia, Madhav Vyas
International Meeting for Applied Geoscience and Energy (IMAGE)
... AVA response both in extra-salt and subsalt areas. We compare three algorithms: wave-equation traveltime Kirchhoff (WETK), FDR surface-offset gathers...
2024
A prior regularized 3D full-waveform inversion using 2D generative diffusion models
Fu Wang, Tariq Alkhalifah, Xinquan Huang
International Meeting for Applied Geoscience and Energy (IMAGE)
..., F is the wave equation operator (like that for the acoustic wave equation with constant density), and R denotes an implicit or explicit regularization...
2024
Three-Dimensional Depth Imaging of Seismic Data, with Examples from the Overthrust Belt of Southwestern Wyoming
Alvin K. Benson
Wyoming Geological Association
...) depth imaging algorithm. Typically, one starts by trying to solve the 3-D scalar wave equation for stacked data. Imaging would then involve a single...
1995
Delineation of the Reservoir by Seismic Methods: Chapter 3
Roberto Sarmiento
AAPG Special Volumes
... and seismic modeling, acoustic impedance logs, stacking velocities from common depth points, applications of wave equation, three-dimensional surveying...
1989
High-precision seismic imaging for complex deep structures in the hydrocarbon exploration using a coherent-stacking-based least-squares migration
Jidong Yang, Jianping Huang, Tengfei Lin, Zhenchun Li, and Liang Chen
AAPG Bulletin
...). With the dramatic improvement in high-performance computing over the past three decades, the wave-equation imaging methods, including one-way wave...
2024
Seismic Exploration in Railroad Valley, Nevada
John H. Vreeland, Bert H. Berrong
Rocky Mountain Association of Geologists
... of the valley fill can be deceiving, as discussed below, For these reasons, it is necessary to use wave-equation migration on each line. The surfaces being...
1979
Estimate near-surface velocity with reversals using deep learning and full-waveform inversion
Yong Ma, Xu Ji, Weiguang He, Tong Fei
International Meeting for Applied Geoscience and Energy (IMAGE)
.../10.1038/nature14539. Luo, Y., and G. T. Schuster, 1991, Wave-equation traveltime inversion: Geophysics, 56, 645–653, doi: https://doi.org/10.1190/1.1443081...
2022
Measurements Derived from Seismic Data as an Aid in Hydrocarbon Definition
R. E. Sheriff, M. T. Taner, F. P. Kronberger, L. R. Denham
Indonesian Petroleum Association
... and they have been migrated by the wave-equation method; a well is located near the line intersection. Figure 3. Phase section across field where production...
1979
Next-generation resolution through multiparameter FWI imaging
Tom Rayment, James McLeman, Karen Dancer, Tim Burgess
International Meeting for Applied Geoscience and Energy (IMAGE)
...). This approach uses an augmented acoustic wave equation to update velocity and an AVA-related reflectivity simultaneously. The separation of the migration...
2022
High Frequency Full Waveform Inversion as an Interpretation Solution
Laurence Letki, Matt Lamont, Troy Thompson
Australian Petroleum Production & Exploration Association (APPEA) Journal
... to develop better tools and to use better physics to build models of the subsurface. Wave-equation based techniques, such as full waveform inversion (FWI...
2019
Leveraging legacy data: An onshore reprocessing case study from eastern Australia
Bahaa Soliman, Catalina L. Ocampo, Oscar Garcia, Andy Walz, Anthony Goodall, Emily Guidry
International Meeting for Applied Geoscience and Energy (IMAGE)
...) is a wave-equation prediction based on convolution and cross-correlation of recorded traces (Jakubowicz, 1998). As it does not rely on dip or velocity...
2022
Broadband Seismic Technology and Beyond: PART X: IsoMetrix Isometric Sampling
Lasse Amundsen, Martin Landrø
GEO ExPro Magazine
... for the two other components of the velocity measurement, he wonders? Using Crossline Data Let’s go back to basics. The acoustic wave equation governs...
2014
Assessing properties of internal multiples for different geologies
Paul Ras, Mikhail Davydenko, Eric Verschuur
International Meeting for Applied Geoscience and Energy (IMAGE)
..., and D. J. Verschuur, 2017, Quantitative prediction of injected CO2 at Sleipner using wave-equation based AVO: First Break, 35, 65–70, doi: https...
2022
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
RTM method of prismatic-waves under the undulating surface: A case study of the Longmen Piedmont
Bo Ma, Yingming Qu, Zhenchun Li, Jianggui Zhu, Chang Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
... methods appear to solve these imaging problems. It is found that the curved grid reverse time migration technology based on the two-way wave equation can...
2022