Low-frequency data reconstruction for full-waveform inversion

Ramzi Djebbi, Maiza Bekara, Jaime Ramos-Martinez, Nizar Chemingui

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Introduction Full waveform inversion (FWI) aims to recover a highresolution velocity model using least-squares minimization of the difference between field...

Abstract: Reflection Full Traveltime Inversion in the Image Domain; #90319 (2018)

Yue Ma, Tong W. Fei, Yan Wu, Yi Luo

Search and Discovery.com

... or kinematic information in seismic data or migrated gathers for smooth velocities, suffer a common and severe problem ---- the inversion...

Seismic Imaging in Anisotropic Media. or... "A Better Way to Moveout and Migrate Long Offset Data"

Rolf Klotz, Martin Bayly, Sue Downie, Swee Leng

Indonesian Petroleum Association

... reflection angles are retained in processing for studies such as amplitude variation with offset (AVO) and depth conversion velocity analysis. Anisotropic...

Application of wave-equation reflection traveltime inversion to the Liwan deep-water streamer data in the South China Sea

Yilin Wang, Liangguo Dong, Chao Huang, Jianming Zhang, Yuzhu Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

...ve update of the deep velocity model only by utilizing seismic reflection information. Before using the acquired seismic data for velocity mod...

Monument Butte 3DReprocessing case study in Uinta Basin

Mitch Preston, Xinxiang Li, Seth Berman, Phillip Keith, Christopher Egger, Josef Heim, Nebojsa Pralica, David Brookes, James Beck

International Meeting for Applied Geoscience and Energy (IMAGE)

... variations in the data. The azimuthal velocity variation analysis (VVAz) on the PSTM gathers successfully captured stress anisotropy caused by local...

Exploration and Development based on RTH Technology and AI

Gennady Erokhin, Mariia Erokhina, Kirill Safran, Alexandre Iakovlev

Unconventional Resources Technology Conference (URTEC)

... in common image gathers, using the time-reversal algorithms and on synthesis a seismic attributes. It is shown that a detailed analysis of the joint...

Fit-for-Purpose Depth Imaging of Sub-Thrust and Strike-Slip Fault Regime Onshore Myanmar

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ABSTRACT: Reducing the Assumptions - AVO Processing Tools from BP's AVO Workbench, by Sublette, Victoria; #90026 (2004)

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Study on fluid discrimination method based on prestack frequency-dispersion characteristics

Lien Bian, Jun Ming, Yuxiu Wang, Qian Yu

International Meeting for Applied Geoscience and Energy (IMAGE)

... identification. The method mainly includes four key steps: prestack gathers optimization, high-precision timefrequency analysis (a method called kurtosis...

Abstract: An Azimuthal-AVO-Compliant 3D Land Seismic Processing Flow; #90171 (2013)

David Gray, Darren Schmidt, Nirupama Nagarajappa, Charles Ursenbach, and Jon Downton

Search and Discovery.com

... azimuthal velocity variations (left) and after application of azimuthal velocities (right). Prior to AVO analysis, it is important to remove the effects...

Least-squares reverse-time migration with angle gathers through point spread functions

Jianyong Bai, Orhan Yilmaz

International Meeting for Applied Geoscience and Energy (IMAGE)

... migration with angle gathers through point spread functions Jianyong Bai∗ and Orhan Yilmaz, Emerson SUMMARY Angle-domain common image gathers (ADCIGs...

Abstracts: Attenuating 2D Noise in a 3D World; #90173 (2015)

David C. Henley

Search and Discovery.com

... coherent noise from a 3D source gather using 2D radial trace filtering. Introduction The objective of exploration reflection seismology is to create...

Abstract: AVO Analysis of Long Offset 2D Data in the Western Gulf of Mexico, by Jess B. Kozman and Fred Hilterman; #90914(2000)

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Abstracts: A Non-Linear Conjugate Gradient (CG) Method to Solve for Vp, Vs and Density from Seismic Elastic Impedance; #90173 (2015)

Yexin Liu and Zhuoheng Chen

Search and Discovery.com

... equation from all available EI gathers to estimate compressional velocity, shear velocity and density, and ratio and Poisson’s ratio, which allows...

Geomechanical Approach to Resolve Severe Velocity Variations and Remove Image Distortions below Rugose Seafloor (Paper A16)

S. Birdus, A. Artyomov, L. Li, S. Xin

Geological Society of Malaysia (GSM)

... such anomalies using this knowledge. Geomechanical velocity modelling consists of 3 major steps: 1. Determine the sources of anomalous geo-stress. If we know...

AVA on communication cables: Principles and Examples from the North Sea

Ran Bachrach, Ali Sayed, Andrea Murineddu, Pilar Di Martino

International Meeting for Applied Geoscience and Energy (IMAGE)

...., 2020, 2021). The reflection AVA response can provide insights to the in-situ rock properties such as seismic velocity, density, fluid content...

New Integrated Workflows for Improved Pore Pressure Prediction and Seismic Imaging

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Marine Multicomponent Seismic – The New Issues in the Developing Revolution

Jason Robinson

Indonesian Petroleum Association

..., A., 1988. Common reflection point data stacking technique for converted wave. Geophysical Prospecting, v. 36, pp. 671-688. Thomsen, L., 2001. Seismic...

Envelope full-waveform inversion of marine seismic data

Kai Xiong, David Lumley, Wei Zhou

International Meeting for Applied Geoscience and Energy (IMAGE)

... model with IEI and a high-resolution velocity model with IEI+FWI using 24 Hz data. (a) (b) Figure 1. Shot gathers (8Hz) at sx=8 km. (a) Observed data...

Amplitude Versus Offset (AVO) Analysis: Part 7. Geophysical Methods

Allan T. Long, R. C. Anderson

AAPG Special Volumes

... Seismic data processing for AVO requires that certain steps be applied to common depth point (CDP) gathers (the individual traces prior to stacking...

Extracting Meaningful Estimates of Rock Properties from 3-D Anisotropic Velocity Models Derived from Borehole Microseismic

Scott Taylor, Jeremy King, Ben Schaeffer, Todd Hibbitts, Lucas McGreaham, Khaled Ghuneim

Unconventional Resources Technology Conference (URTEC)

... modeling is performed by two point ray tracing following the velocity approximations of Fomel (2004). For modeling, layers are constructed...

Depth Imaging Seismic Data to Help Delineate Gas Reservoirs in Southwest Wyoming

Alvin K. Benson

Wyoming Geological Association

... to the common reflection point assumption, and imaging will be applied after stack. When the subsurface structure is complex, two equally important...

Land seismic multi-parameter FWI imaging

Mason Phillips, James McLeman, Vlada Avramovic, Tom Rayment, Stuart Schmitt, Mike Varner, Yasser Khalifeh, Ahmad Ammar Chahine, Eskil Jersing

International Meeting for Applied Geoscience and Energy (IMAGE)

...) imaging uses minimally processed field data to simultaneously estimate a subsurface velocity model and a high-resolution reflectivity image using the full...

Depth Imaging Coil Data: Multi Azimuthal Tomographic Earth Model Building and Imaging of Tulip (Paper A15)

S. Chen, M. Buia, L. Livraghi, M. Bakhrudin, M. Tham, M. Bayly, S. Ng, O. Zdraveva

Geological Society of Malaysia (GSM)

..., but also correctly account for the source to receiver azimuth contribution of traces in common image point gathers (CIPs) when performing residual...

An unsupervised intelligent stacking velocity analysis based on clustering

Lide Wang, Xingrong Xu, Jie Wu, Huahui Zeng, Yundong Yong, Yanxiang Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

..., Automatic velocity analysis using convolutional neural network and transfer learning: Geophysics, 85, no. 1, V33–V43, doi: https://doi.org...