Abstract: Converted-Wave Prestack Time Migration with a New Approximate Migration Weight; #90224 (2015)

Chuck Ursenbach and Peter Cary

Search and Discovery.com

... on the exact weight for a homogeneous medium. However, rather than assuming equality of travel path distances from source to image point and image point...

4D image velocity scan to improve the 4D quantitative interpretation

Mohamed Hatab, Colin MacBeth

International Meeting for Applied Geoscience and Energy (IMAGE)

... Kirchhoff pre-stack depth migration in a 50m x 50m grid. After migrating with all model percentages, the output PreSDM image gathers for each migration...

Deep learning-based Vz-noise attenuation for OBS data

Jing Sun, Arash Jafargandomi, Julian Holden

International Meeting for Applied Geoscience and Energy (IMAGE)

... a contracting path consisting of a series of convolutional layers that reduce the image resolution while simultaneously increasing the number of feature...

Abstract: Regional Geology of Deep Water Salt Architecture, Offshore Gulf of Mexico, by Abu Chowdhury and Simon Lopez-Mora; #90032 (2004)

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Abstract: Regional Deep Water Salt Geology, Offshore Nova Scotia, Canada, by Abu Chowdhury and Landis Newbanks; #90039 (2005)

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Abstract: Reducing Fault-related Structural Uncertainties by Ranking Models using Seismic Data Misfit Functions; #90286 (2017)

Modeste Irakarama, Gabriel Godefroy, Paul Cupillard, Guillaume Caumon, Paul Sava

Search and Discovery.com

... zones and limited seismic bandwidth. A single seismic image can lead to multiple structural interpretations, thus illustrating interpretation...

Abstract: Diffraction Imaging: An Example from Saudi Arabia; #90319 (2018)

Salah Alhadab

Search and Discovery.com

... to achieving this goal is that conventional images are produced using seismic data processing flows designed to image reflected energy that comes from...

From exploration to diagnosis: Can geophysicists revolutionize healthcare?

Chuck Peng, Maurice Nessim

International Meeting for Applied Geoscience and Energy (IMAGE)

... gathers which are not well-known in medical ultrasound world. Figure 3 shows a few representative common image point gathers of heart tissues...

Abstracts: Converted Wave Processing in the EOM Domain; #90173 (2015)

Thais A. Guirigay and John B. Bancroft

Search and Discovery.com

... and common scatter points (CSP). During the process, a converted wave velocity Vc was estimated from the hyperbolic moveout on CSP gathers. Moveout (MO...

Separation of simultaneous source wavefields using convolutional neural network

Zhehao Li, Hua-Wei Zhou, Kang Fu

International Meeting for Applied Geoscience and Energy (IMAGE)

... not exhibit image Gaussian noise features, we modified the network to train the model in common receiver gathers domain to directly predict...

Seismic Inversion

Michel Kemper

Petroleum Exploration Society of Australia (PESA)

..., and not necessarily for uses such as seismic inversion. In an ideal world, the processing g ives a best possible image and is 'inversion ready'; in practice...

Abstract: Nisku Multiple Attenuation with Interpolation and Sparsity: A Case Study; #90172 (2014)

Lee Hunt, Scott Reynolds, Mark Hadley, Scott Hadley, Mike Perz, Ye Zheng

Search and Discovery.com

... sampled, regular gathers, as input. This can typically only be achieved in land data by borrowing traces from neighboring cmp locations (superbinning) over...

Abstract: Supervirtual S-wave Refraction Interferometry for Converted Wave Statics and Near-Surface S-wave Velocity Model Building; #90224 (2015)

Kristof De Meersman and Yoones Vaezi

Search and Discovery.com

... of noisy P-wave refractions in supervirtual gathers. We have tested this method on S-wave refractions from a 2D 3C dataset. Accurate first break S-wave...

The need of elastic RTM for elastic FWI models

Hui Huang, Zedong Wu, Xue Xiao, Zhigang Zhang, Ping Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... Image. As it is sometimes computationally prohibitive to run high-frequency elastic FWI for FWI Imaging purposes, more so for FWI Imaging gathers...

Applications of near-field hydrophone data imaging in a shallow water environment: A case study from offshore Egypt

Mahmoud El-Attar, Omar Hossam, Azat Kireev, Arindam Kanrar, Usama Fathy Abdel-Kader, Kai Zhang, Jacob Deeds, Jordan Hassler

International Meeting for Applied Geoscience and Energy (IMAGE)

... limited only to the determination of the source signature or performing shot-by-shot designature; it is extended to image near-seafloor geology...

Value of elastic full-wavefield inversion in derisking clastic reservoirs in presence of noise

Partha Routh, Soumya Nayak, Jake Dorsett, Kaushik Banerji, Young Ho Cha, Vijay Gottumukkula, Gopal Palacharla, Vikas Gudipati, Ramesh (Neelsh) Neelamani, Seth Conway, Andrea Raphael

International Meeting for Applied Geoscience and Energy (IMAGE)

... shots and the eFWI simulated shots and compare them as image gathers shown in Figure 3. Figure 2: Field raw shot data up to 15Hz (top) and simulated...

Improving subsalt images using FWI and FWI imaging: A streamer case study at Big Foot

Weihong Fei, Jingru Chen, Min Yang, Leah Grassi, Erik Everson, Paul Bovet, Marin Laomana, Sheree Wold, Alex Yanjun Hao, Chi Chen, Shubin Zeng, Zhiyuan Wei

International Meeting for Applied Geoscience and Energy (IMAGE)

... to disorganized common image gathers (CIG) with poor S/N and results in poorly imaged subsalt reservoir reflectors near the Big Foot salt (Figure 1...

Stochastic acquisition systems in time-dependent scattering seismic approach

Gennady Erokhin, Maria Erokhina, Alexandre Iakovlev, Kirill Safran

International Meeting for Applied Geoscience and Energy (IMAGE)

... a Common Image Point, known as Angle Domain Common Image Gathers (ADCIG) (Yoon and Marfurt, 2006; Xie, 2015; Alkhalifah, 2015). The RTH (Re-Emission Time...

Least-squares migration utilizing high-resolution point spread functions generated from local angle domain illumination vectors

Matan Shustak, Orly Kletenik-Edelman, Ronit Levy, Zvi Koren

International Meeting for Applied Geoscience and Energy (IMAGE)

... angle domain wavefield decomposition and imaging part i: Directional and reflection image gathers: Geophysics, 76, no. 1, S1–S13, doi: https://d...

A Practical Review of Migration Issues and Solutions; #40723 (2011)

Ian F. Jones

Search and Discovery.com

..., and the related effects in velocity model update. It should be noted that the algorithm we intend to use for producing the final image should ideally...

Sparse OBN acquisition in shallow water at CCS Sleipner field: The role of multiples in FWI

Sandrine David, Eddie Cho, Graeme Stock, Fons ten Kroode, M.A.H Zuberi

International Meeting for Applied Geoscience and Energy (IMAGE)

... Association of Petroleum Geologists Further evaluation was conducted comparing the flatness of common image gathers (CIGs) of the UDD data, after...

Prestack Investigation of Shallow Surface-Sourced Seismic Data in Central-Northern Louisiana

D. Cimadomo, G. Kinsland, R. Zhang

GCAGS Transactions

.... In the stacked data image, the Cane River Shale/Carrizo Sand contact is a continuous high amplitude reflector. To investigate the ability of the high...

Abstract: Prestack Signal Enhancement by Non-hyperbolic MultiFocusing; #90187 (2014)

Evgeny Landa, Alex Berkovitch, and Kostya Deev

Search and Discovery.com

..., Integration: Geoscience Engineering Partnership, 6-12 May 2013, Calgary, AB, Canada Figure 4a. PSDM image obtained from the original . gathers...

Abstract: Automatic High-Density Constrained Velocity Picking; #90211 (2015)

Emil Blias

Search and Discovery.com

... velocities, one may pick velocity manually at several points and determine the constraints. Then we take these CDP gathers as the reference points and extend...

Calibration of PS Shear Wave Anisotropy in a Mississippi Lime Play, North-Central Oklahoma

Scott Singleton, Shihong Chi, Lisa Sanford, Paul Constance

Unconventional Resources Technology Conference (URTEC)

... to fracture data from FMI logs (17 data points). Anisotropic effects investigated were (1) azimuthal travel time differences in the gathers (i.e....