Abstracts: General Anisotropic Travel Times … A Purpose Built Solution; #90173 (2015)

R. Phillip Bording

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... to any general anisotropy. In this work using hardware for geophysical algorithms such as finite difference methods and ray tracing is extended...

Results of a Vibroseis Sourced 3D Seismic Survey, Phetchabun Basin, Thailand

David Remus, Rex Prosser

Southeast Asia Petroleum Exploration Society (SEAPEX)

... was 200 milliseconds. Datum statics were calculated using 3D refraction statics. 3D dip move-out (DMO) and 2-pass finite difference 3D migration were...

Abstract: Seismic Modeling of Fluvial Reservoirs in Outcrop, by E. Campbell; #90990 (1993).

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Abstract: Planning a Seismic Survey Offshore Myanmar Using Finite Difference Modeling and a Conceptual Earth Model; #90294 (2017)

Michele Buia, Francesca Salvi, Alessia Ravasio, Ivan Staine

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...Abstract: Planning a Seismic Survey Offshore Myanmar Using Finite Difference Modeling and a Conceptual Earth Model; #90294 (2017) Michele Buia...

Abstract: Transmission Imaging: Moving Source Offset VSP (MSOVSP) Case Study; #90172 (2014)

Emmanuel Bongajum, Bernd Milkereit, Douglas Schmitt

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... seismograms were modeled using a 3D viscoelastic finite difference code (Bohlen, 2002). The data acquisition was symmetric about the borehole...

ABSTRACT: BURIED GAS HYDRATES IN THE DEEPWATER OF THE SOUTH CASPIAN SEA, AZERBAIJAN: IMPLICATIONS FOR GEO-HAZARDS; #90024 (2004)

Camelia C. Diaconescu, James H. Knapp, Robert M. Kieckhefer

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.... Principal steps included wavelet deconvolution, spherical divergence, bandpass filtering, surface consistent amplitude scaling, finite-difference...

Abstract: Time-Reversal Extrapolation for Microseismic Event Localization; #90224 (2015)

Zhenhua Li and Mirko van der Baan

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... a finite difference operator is used for extrapolation (Fleury and Vasconcelos, 2013). Alternatively, acoustic time-reversal extrapolation can be achieved...

Acoustic modelling with elastic AVA effects

Robin P. Fletcher, James Hobro, James Rickett

International Meeting for Applied Geoscience and Energy (IMAGE)

... calculation (thin red) are plotted as well as the critical angle. The elastic finite-difference modelling results for each of the four elastic models...

Incorporating refraction time-shifts into geophysical monitoring systems for monitoring shallow CO2 accumulations

Martyn Steel, Sjoerd A.L. De Ridder, Mike Branston, James Butt, Gabrielle Busanello

International Meeting for Applied Geoscience and Energy (IMAGE)

... Table 1 Parameters used in synthetic layer cake models for synthetic finite-difference modelling of marine seismic experiments. High-velocity layer...

Traveltime Computations for Locating the Source of Micro Seismic Events and for Forming Gridded Traveltime Maps

John C. Bancroft

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... Article #90168©2013 CSPG/CSPE GeoConvention 2007, Calgary, Alberta, Canada, May 14-17, 2007 industry standard (Vidale 1988) uses a finite difference...

Traveltime Computations for Locating the Source of Micro Seismic Events and for Forming Gridded Traveltime Maps

John C. Bancroft

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... Article #90168©2013 CSPG/CSPE GeoConvention 2007, Calgary, Alberta, Canada, May 14-17, 2007 industry standard (Vidale 1988) uses a finite difference...

An immersed boundary topography approach for TTI acoustic propagation

Edward Caunt, Rhodri Nelson, Tim MacArthur, Fabio Luporini, Gerard Gorman

International Meeting for Applied Geoscience and Energy (IMAGE)

... Association of Petroleum Geologists REFERENCES Almuhaidib, A. M., and M. N. Toksoz, 2015, Finite difference elastic wave modeling with an irregular free...

Abstract: Applicability of TTI RTM to Structured Land Datasets; #90172 (2014)

Charles Ursenbach, Yan Yan

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... in highly structured media. The present calculations have been carried out using a finite-difference implementation of RTM (Zhang and Zhang, 2008...

AAPG/Datapages Discovery Series No. 7: Multidimensional Basin Modeling, Chapter 15: Simple 3-D Modeling of Hydrocarbon Migration

Wangen, M., T. Throndsen

AAPG Special Volumes

.... 723759.Schneider, F., S. Wolf, I. Faille, T. Galloet, and W. Choueri, 1992, Hydrocarbon migration in basin modeling: Is the combined use of finite element...

Abstract: Near-surface Issues in TTI Wave Equation Migration from Topography; #90171 (2013)

Chuck Ursenbach, Richard A. Bale, and Samuel H. Gray

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.... Consequently a variety of solutions have been proposed. The first method that was both accurate and efficient was applied to finite-difference methods...

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

... the traveltime by tracing rays (Julian and Gubbins, 1977; Keho and Beydoun, 1988) or solving the eikonal equation using the finite-difference algorithm...

Full-elastic AVA extraction using acoustic FWI

Michael Warner, John Armitage, Adrian Umpleby, Nikhil Shah, Henry Debens, Fabio Mancini

International Meeting for Applied Geoscience and Energy (IMAGE)

... – this represents a model with simplified gasfilled reservoirs that do display anomalous AVA. We generated synthetic elastic finite-difference data using...

Abstract: 2-D Basin Modeling in the North West German Basin - Influence of Reservoir Model on Gas Distribution, by W. Leu, B. Klug, and R. Schegg; #90923 (1999)

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Abstracts: Full Waveform Inversion with Total Variation Regularization; #90173 (2015)

Amsalu Y. Anagaw, Mauricio D. Sacchi

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... is computed by solving the full wave-equation using the finite difference method. FWI is a local gradientbased optimization problem requiring...

Time-lapse processing and imaging of the Snowflake 3D DAS VSP CO2 monitoring dataset

Xiaohui Cai, Kristopher A. Innanen, Qi Hu, Ziguang Su, Donald C. Lawton

International Meeting for Applied Geoscience and Energy (IMAGE)

... reverse-time migration using GPU card and POSIX thread based on the adaptive optimal finite-difference scheme and the hybrid absorbing boundary condition...

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)

... (1983) chose the finite difference method to solve the twoway wave equations. Chang and McMechan (1987, 1994) proposed inverse time migration...

Reverse-time migration of mobile marine vibrator data

Khalid Almuteri, Paul Sava, Jeffrey Shragge

International Meeting for Applied Geoscience and Energy (IMAGE)

... are stationary, one can compute the receiver wavefield using a Cartesian finite-difference acoustic wave-equation solver. In the case of ocean-bottom...

3D anisotropic seismic simulation for fracture prediction in Sichuans Wufeng shale gas reservoirs

Xiang Li, Ziduo Hu, Chunhui Xie, Yancan Tian, Wei Liu, Xinyu Fang, Gang Yao

International Meeting for Applied Geoscience and Energy (IMAGE)

... anisotropic wavefield simulation in fractured media. Based on the finite difference method, we implement the new 3D anisotropic wavefield simulation using...

Elastic reverse-time migration without wavefield decomposition

Daiguang Li, Shengchang Chen

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Virieux, J., 1984, SH-wave propagation in heterogeneous media: Velocity-stress finite difference method: Geophysics, 49, 1933–1942, doi: https://doi...

Abstracts: Full Waveform Inversion Using One-way Migration and Well Calibration; #90173 (2015)

Gary F. Margrave, Robert J. Ferguson, and Chad M. Hogan

Search and Discovery.com

... model is proportional to a reverse-time migration of the data residual (the difference between the actual data and data predicted by the model) where...