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)

... Gorman1,2 1 DevitoCodes Ltd, 2 Imperial College London, 3 Thrust Belt Imaging SUMMARY Application of wave-equation-based processing workflows in the presence...

Optimal transport for elastic source inversion

Tyler Masthay, Björn Engquist

International Meeting for Applied Geoscience and Energy (IMAGE)

... the acoustic wave equation, which is less accurate than the elastic wave equation. In this paper, we extend these results to elastic source inversion in two...

Reservoir Oriented Non-Linear Full Waveform Inversion of Seismic Data

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Recent Advances and Experiences in Subsalt Seismic Imaging

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Use of Dielectric Constant Logs: Chapter VII

George B. Asquith

AAPG Special Volumes

..., generate an electromagnetic wave which operates in a frequency range of 35 to 20,000 hertz (where hertz = cycles/second). At these frequencies...

Acoustic/elastic wavefield injection and reconstruction from ocean-bottom data for elastic RTM

Bingkai Han, Weijian Mao, Xiao-Bi Xie

International Meeting for Applied Geoscience and Energy (IMAGE)

... as different types of boundary values of wave equation, and injected into wave propagators during the migration imaging process. The property...

Numerical modeling of PP and PS reflections in DAS VSP

Joseph J. Cherayil, James L. Simmons

International Meeting for Applied Geoscience and Energy (IMAGE)

...flections, the elastic wave equation was used to compute finite differences in Devito. The elastic wave equation in a homogeneous medium can be expressed...

Method of seismic wave advance geological prediction in soft layer

Xingmeng Dong, Zhoutuo Wei, Yuwen Zhai, Jigen Xia

International Meeting for Applied Geoscience and Energy (IMAGE)

...Method of seismic wave advance geological prediction in soft layer Xingmeng Dong, Zhoutuo Wei, Yuwen Zhai, Jigen Xia Method of seismic wave advance...

Abstract: Velocity Model Building with Weighted Linearized Inversion … A VSP Data Case Study; #90187 (2014)

Mingyu Zhang, Richard Kuzmiski, and Zhengsheng Yao

Search and Discovery.com

... of downgoing wave from Vertical Seismic Profiling (VSP) provides more localized estimation of in situ anisotropy than surface seismic. However, when...

Premigration attenuation analysis and mapping to image domain by weighted migrations

Yonghe Sun, Chunling Wu, Mark Fan, Zhemin Tan

International Meeting for Applied Geoscience and Energy (IMAGE)

... research area for seismic imaging and amplitude-versus-angle (AVA) analysis. According to Aki and Richards (2002, equation 5.94), attenuation can...

New stability constraints for pseudo-acoustic finite difference TTI modelling and inversion

Rodrigo Fuck, Lorenzo Casasanta, Marcel Nauta

International Meeting for Applied Geoscience and Energy (IMAGE)

... for stable pseudo-acoustic wave-equation modelling and inversion over vertical or tilted transverse isotropic media. Our method ensures elastic stability...

Marine Multicomponent Seismic – The New Issues in the Developing Revolution

Jason Robinson

Indonesian Petroleum Association

... not adequately image the reservoir such as where the presence of shallow gas disrupts P wave propagation or where sands with low impedance contrast...

Oscillation Ripples: REPLY

Martin C. Miller, Paul D. Komar

Journal of Sedimentary Research (SEPM)

...Oscillation Ripples: REPLY Martin C. Miller, Paul D. Komar 1981 Vol. 51 No. 2. (June), DINGLER, J. R., AND INMAN, D. L., 1977, Wave-formed ripples...

Abstracts: Fluid Substitution and Seismic Modelling in a Sandstone Aquifer; #90173 (2015)

Virginia C. Vera and Don C. Lawton

Search and Discovery.com

... variation for higher saturation values. The results obtained were supported by direct application of the Gassmann equation. Figure 3a shows how the P-wave...

Experience with Surface and Downhole Vector Wavefield Recording in Central Sumatra

Eddy Murhantoro, Jeff Wright

Indonesian Petroleum Association

... Sumatra area. 1. Castagna, J.P., Batzle, M.L., and Eastwood, R.L. 1985. Relationships between compressional and shear-wave velocities in clastic...

Angle-constrained VSP least-squares reverse-time migration based on a high-efficiency stabilized Poynting vector

Xuan Ke, Mauricio Sacchi, Ying Shi

International Meeting for Applied Geoscience and Energy (IMAGE)

... be considered a special form of equation (3). To demonstrate this, we utilize a plane-wave solution of the acoustic wave equation: ̂∙𝐱 𝐧 ̃(𝐱, 𝑡) = 𝐴c...

Orthorhombic AVAZ inversion in the Laplace-Fourier domain

Lin Li, Jinmiao Zhang, Guangzhi Zhang, Zhenyu Zhu, Jiajia Zhang, Chao Li, Xinpeng Pan

International Meeting for Applied Geoscience and Energy (IMAGE)

... (P-wave velocity, S-wave velocity, density, horizontal and vertical fracture densities) from azimuthal seismic data, which includes (1) Laplace...

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

... a forward modeling and a depth migration. The forward modeling engine, which is usually based on a finite difference solution of the elastic wave equation...

Abstract: Comparative Study on 2D Microseismic Source Location with Synthetic Seismograms Recorded by Borehole- and Surfacereceiver Arrays; #90224 (2015)

Anton Biryukov, Simon G.E. Harvey, and Giovanni Grasselli

Search and Discovery.com

... Summary In this report an algorithm based on the finite difference approximation of the 2D acoustic wave equation has been implemented to create synthetic...

Formation of Ripple Bands in a Wave-Convergence Zone

K. P. Black , T. R. Healy

Journal of Sedimentary Research (SEPM)

... term, F, the wave height equation can be derived in two dimensions assuming wave power is conserved. That is, E · cg = 0, (8) where E = 0.125gH2...

Entrainment and Distribution of Different Sand Sizes Under Water Waves

Peter Nielsen

Journal of Sedimentary Research (SEPM)

... and suspended sediment collected at different elevations over wave ripples shows that for grain sizes larger than 0.5 mm the likelihood of entrainment...

Converted Shear-Wave Seismic Fracture Characterization Analysis at Pinedale Field, Wyoming

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Marchenko focusing using convolutional neural networks

Mert S. R. Kiraz, Roel Snieder

International Meeting for Applied Geoscience and Energy (IMAGE)

... of the Marcehenko equation to retrieve the three-dimensional Green’s function. Their algorithm starts with modeling the direct wave using the smooth version...

Paleohydraulic Interpretation of Antidune Bedforms with Applications to Antidunes in Gravel

John Shaw , Rolf Kellerhals

Journal of Sedimentary Research (SEPM)

.... Maximum steepness is given by Kennedy (1961) as [Hw]/[L] = 0.142 (6) where Hw is the height of the water wave. The equation is due to Michell (1893...

PS-wave seismic data: A game changer in exploration and monitoring

Ali Tura, James Simmons, Sima Daneshvar, Matthew Copley, Joseph Stitt

International Meeting for Applied Geoscience and Energy (IMAGE)

..., a wave-equation based AVO application was also shown by Dhelie et al. (2021) to be an established geophysical tool to extract elastic subsurface...