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Showing 16,557 Results. Searched 195,364 documents.
Wavefield Extrapolation for Prestack Time Migration with RMS Velocity: Part I Algorithm
Jianhua Pan
Search and Discovery.com
... to convert rms velocity to interval velocity by using Dix’s equation. Time migration can be viewed as a valid imaging process but its imaging...
Unknown
Wavefield Extrapolation for Prestack Time Migration with RMS Velocity: Part I Algorithm
Jianhua Pan
Search and Discovery.com
... to convert rms velocity to interval velocity by using Dix’s equation. Time migration can be viewed as a valid imaging process but its imaging...
Unknown
Seismic Imaging through Outcropping Carbonates: An Example from the Canadian Rocky Mountains, , #41533 (2015).
Yong Hua, Don C. Lawton
Search and Discovery.com
... picked using semblance analysis and constant velocity stack scans. The velocities were then used to create NMO-corrected gathers. A manually picked...
2015
Abstract: Seismic Imaging of Imbricate Structures in Mountainous Area: Case Studies; #90211 (2015)
Nanxun Dai, Oz Yilmaz, Weizhong Wang, and Jie Zhang
Search and Discovery.com
... migrate the shot gathers using the rms velocity field derived from the interpretation of the velocity cube based on the selected near-surface strategy...
2015
Abstract: Velocity Updating for Converted-Wave Prestack Time Migration; #90211 (2015)
Xiaogui Miao
Search and Discovery.com
...) proposed to create hyperbolic moveout migrated common midpoint (HMO-MCMP) gathers and carry out hyperbolic velocity analysis on these gathers. Because...
2015
Integrated 3D Seismic Data Modeling and Processing Methodology for Structural Model Analysis: Case Study
T. Salinas
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... with reflection from either side of the seismic profile (Figure 6). The distance between the common reflection point (CRP) and CMP shown in Figure 7 has...
2006
Seismic Velocity Model Building in an Area of Complex Geology, Southern Alberta, Canada
Helen Isaac and Don Lawton
Search and Discovery.com
... field derived from velocity analysis of common reflection point gathers in the time domain. I know that there should be high velocities above...
2009
Identification of Hydrocarbon Reservoirs from Seismic Gathers AVO Analysis in the Offshore Niger Delta, by A. Adekanle; #90037 (2005)
Search and Discovery.com
2005
U-net based primary alignment
Ricard Durall, Ammar Ghanim, Norman Ettrich
International Meeting for Applied Geoscience and Energy (IMAGE)
... are randomly sampled to introduce variability. The resulting prestack gathers undergo move-out correction using a perturbed velocity model, introducing NMO...
2023
Imaging of the Guando Field Colombia in Time and Depth
M.A. Hall, V. Avramovic, J.T. Basick, I. Novianti, D.T. Maucione, P.Kroshko, J.C. Garzon
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... a starting model. The data was migrated with this velocity field and migrated Common Reflection Point (CRP) gathers were output in preparation for the next...
2003
Abstract: Subsalt Velocity Estimation Using Wave-Equation Tomography with Surface Offset Gathers; #90319 (2018)
Yujin Liu, Yan Wu, Xiongwen Wang, Tong W. Fei, Yi Luo
Search and Discovery.com
...Abstract: Subsalt Velocity Estimation Using Wave-Equation Tomography with Surface Offset Gathers; #90319 (2018) Yujin Liu, Yan Wu, Xiongwen Wang...
2018
Reservoir Characterisation Through Integrated AVO, AI and EI Inversion
Andy Furniss
Indonesian Petroleum Association
... must be applied to prestack time or depth migrated gathers such that each trace in an ensemble comes from a common-reflection-point (CRP...
2002
Abstract: Target-Oriented Imaging for Continous Seismic Reservoir Monitoring; #90319 (2018)
Hongwei Liu, Mustafa Al-Ali
Search and Discovery.com
... data recorded using surface receivers generally fails to explain how energy propagates in the complex subsurface unless highresolution seismic velocity...
2018
Abstract: Kirchhoff Prestack Time Migration with Angle Domain Common Image Gathers; #90174 (2014)
Jianhua Pan, Robert Tilson, Gerry Schlosser, and Elvis Floreani
Search and Discovery.com
... common image gathers are commonly used for migration velocity analysis and AVO studies. However, recent works show that more benefits could...
2014
Try Before You Buy!
Lars Zühlsdorff, Trond Haugland
GEO ExPro Magazine
... and common reflection point (indicating required migration aperture) and the relationship between offset, incident angle, and azimuth (indicating...
2020
Abstract: Azimuthal Processing For Unconventional Resource Plays Using An Orthorhombic Velocity Model; #90174 (2014)
Shaowu Wang and David Wilkinson
Search and Discovery.com
... velocity parameters are estimated simultaneously. The input is either Common Offset Vector (COV) or azimuth-sectored isotropic pre-stack migrated gathers...
2014
A Time Migration Before Stack
Richard Cooper, Malcolm Hobson
Geological Society of Malaysia (GSM)
.... The multi-valued velocity-time picks associated with dispersed reflection energy are effectively removed on the prestack migrated gathers. The velocity...
1991
Unlocking Value from Vintage Seismic Processing - Pre-stack Conditioning and Inversion in the Eagle Ford Shale
Andrew Munoz, Bill Shea
Unconventional Resources Technology Conference (URTEC)
... that by using a pre-stack conditioning workflow on migrated offset gathers, we can substantially improve a 15-survey merge that has an antiquated processing flow...
2020
Abstract: Automatic High-Density Constrained Velocity Picking; #90211 (2015)
Emil Blias
Search and Discovery.com
... Heading? Calgary, AB, Canada, May 15-18, 2006 Conventional velocity analysis works in two steps: (i) We scan CDP gathers with a coherence measure...
2015
High Resolution, Super Efficient Wide Azimuth Beam Tomography for Velocity Model Building
Search and Discovery.com
N/A
Abstract: Simplified Processing of Converted Wave Data; #90224 (2015)
John C. Bancroft and Thais Guirigay
Search and Discovery.com
... to these gathers based on the converted wave geometry.) The converted reflection data in these gathers tend to be hyperbolic and velocity analysis...
2015
Gaining Insight into Formation Anisotropy Using Full Azimuth Imaging and Analysis Tools
Duane Dopkin, Anat Canning, Philip Neri
Indonesian Petroleum Association
... azimuth (AVAZ) analysis. AVAZ requires ‘flattened’ gathers. The preferred approach creates full azimuth angle gathers in depth, using a rich...
2012
Prestack Depth Migration for "Easy" Unconventional Plays?, #41056 (2012)
Morgan Brown
Search and Discovery.com
..., reflector dip and/or velocity variation render the conversion of surface offset or surface source/receiver azimuth to true reflection angle ambiguous...
2012
Impact of Velocity Field on AVA Analysis; #42363 (2019)
Ritesh Kumar Sharma, Satinder Chopra
Search and Discovery.com
... obtained using (a) seismic, and (b) well-driven velocity, overlain on two offset-gathers. A segment of the velocity field around the location of the gathers...
2019
A decoupled orthotropic anisotropy modeling method and its application
Wang Lei, Liang Jiandong, Xuan Ruiqing, Li Daoshan, Zhu Jinping, Hao Xiaoguang
International Meeting for Applied Geoscience and Energy (IMAGE)
... are updated through the residual curvature analysis of the azimuthal CIP gathers, and the ellipse fitting is used to drive the updating of the orthotropic...
2023