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The AAPG/Datapages Combined Publications Database
Showing 33,118 Results. Searched 200,293 documents.
TTI Wave Equation Migration by Phase-Shift Plus Interpolation
Richard A. Bale
Search and Discovery.com
... are dealing with VTI, TTI in 2-D or TTI in 3-D. We will consider the case of TTI in 2-D, characterized by VP0, the velocity parallel to the symmetry axis...
Unknown
TTI Wave Equation Migration by Phase-Shift Plus Interpolation
Richard A. Bale
Search and Discovery.com
... are dealing with VTI, TTI in 2-D or TTI in 3-D. We will consider the case of TTI in 2-D, characterized by VP0, the velocity parallel to the symmetry axis...
Unknown
Abstract: Least Square Migration in Image domain (LSMi) along with Better Velocity Modeling Improves Subsalt Imaging, Offshore Mediterranean, Case Study; #90319 (2018)
Ivica Mihaljevic, Mohamed Afia, Mahmoud M. Shabana, Mohamed Sheneshen, Hany M. Hussein, Mahmoud Ouda, Amr Ghanem, Refaat Zaki, Satyendra Rana, Maud Maud Cavalca, Laurence Letki
Search and Discovery.com
...Abstract: Least Square Migration in Image domain (LSMi) along with Better Velocity Modeling Improves Subsalt Imaging, Offshore Mediterranean, Case...
2018
Velocity and Velocity
M. Al-Chalabi
Petroleum Exploration Society of Australia (PESA)
... if the so called 'velocity' parameter, used in the migration, accurately represented the true velocity field. It does not. As shown below, the 'velocity...
2000
ABSTRACT: Pre-Stack Depth Migration and the Imaging of Complex Structures in the Wyoming Thrust Belt
Richard Postma
Wyoming Geological Association
... tools exist, and are shown, that speed up the convergence. The velocity of this top layer is then held constant, and another layer is added beneath...
2001
Abstract: Seismic Subsalt Imaging in a Complex Salt Basin; #90254 (2016)
Ricardo Bertolotti, Pedro Baptista, Alastair Beach, Radmila Tatalovic, John Aitken, Adnan O. Bu Fateem, Khalfan Almansoori
Search and Discovery.com
... of layered evaporites/sediments (fast and slow) and pure mobile halite (constant), which makes velocity estimation extremely difficult. State...
2016
Rapid Multiple-Scenario Depth Structure Risk Analysis Case Study in Cuulong Basin, Vietnam
Nguyen Nam, Hong Shien Lee
Indonesian Petroleum Association
... the use of picks helps to identify the reliability of picks and then eliminate the bad picks or bad horizons 1- Seismic velocity is PSTM migration...
2008
An Interpreters Guide to Successful Prestack Depth Imaging; #41544 (2015)
Rob A. Holt
Search and Discovery.com
... velocity model building, then final migration and post-migration processing. Depth imaging, on the other hand, needs many passes of migration velocity model...
2015
Application of Advanced Depth Imaging Technology in Shallow Water Offshore Indonesia
Michael Gidding, Suyang Chen, Steven Wiseman, Moch Asrori, Richard Bolton
Indonesian Petroleum Association
... gradients.Grid based tomography is a robust, 3D ray-based inversion method used to refine velocity models for depth migration. Residual traveltime errors...
2012
Wavefield Extrapolation for Prestack Time Migration with RMS Velocity: Part I Algorithm
Jianhua Pan
Search and Discovery.com
...Wavefield Extrapolation for Prestack Time Migration with RMS Velocity: Part I Algorithm Jianhua Pan Wavefield Extrapolation for Prestack Time...
Unknown
Wavefield Extrapolation for Prestack Time Migration with RMS Velocity: Part I Algorithm
Jianhua Pan
Search and Discovery.com
...Wavefield Extrapolation for Prestack Time Migration with RMS Velocity: Part I Algorithm Jianhua Pan Wavefield Extrapolation for Prestack Time...
Unknown
Hydraulic Factors Controlling the Shape of Laminae in Laboratory Deltas
Alan V. Jopling
Journal of Sedimentary Research (SEPM)
... to eliminate the effect of this variable. Increase in velocity at constant depth of flow.--The relationship between velocity and depth of streamflow...
1965
Abstract: Improving Images below Shallow Gas Clouds with Full Waveform Inversion, Q Tomography and Q Migration: A Case Study from Offshore Myanmar; #90246 (2016)
Xiaodong Wu, Jingyu Li, Joe Zhou, Ronan Petton, Ian Anstey, Wai-Leong Lai
Search and Discovery.com
...Abstract: Improving Images below Shallow Gas Clouds with Full Waveform Inversion, Q Tomography and Q Migration: A Case Study from Offshore Myanmar...
2016
Abstract: 3D PreSDM Model Building Via CRP Image Gather Scans: A North Sea Case Study, by I. F. Jones, M. Grimshaw, K. Ibbotson, and B. Jolley; #90942 (1997).
Search and Discovery.com
1997
Imaging Beneath Gas - A Prestack Depth Migration Case Study (Paper 34)
Osman Khan, Uwe Klein-Helmkamp, Peter Whiting, Tim Chapman
Geological Society of Malaysia (GSM)
...Imaging Beneath Gas - A Prestack Depth Migration Case Study (Paper 34) Osman Khan, Uwe Klein-Helmkamp, Peter Whiting, Tim Chapman Warta Geologi...
2003
Imaging and fold comparison of mirror reverse time migration vs. interferometric imaging for VSP data
Liwei Cheng, James Simmons, Ali Tura
International Meeting for Applied Geoscience and Energy (IMAGE)
... of the different methods to the migration velocity model. When the exact velocity model is used, mirror RTM with both upand down-going wavefields...
2022
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)
...rs generally curve upward from shallow to deep, indicating that the initial velocity value is lower than its accurate distribution. In this case, we ha...
2024
Integrated Full Waveform Inversion and Dip Constrained Tomography for Complex Carbonate Imaging - Case Study from Indonesia
Yonghe Guo, Jun Wang, Pongga Wardaya, Riaz Alai, M Afiq B Mokhtar, Rizki Krishna Pratama, Haryono Haryanto
Indonesian Petroleum Association
... migration velocity in which the lateral velocity variation wavelength should be bigger than the maximum offset of useable reflection energy...
2018
Analytical Approach for Multivariate Exploration Planning via Secondary Migration Modelling
Amin Shokrollahi, Sara Borazjani, Syeda Sara Mobasher, Ulrike Schacht, Khalid Amrouch, Pavel Bedrikovetsky
Australian Petroleum Production & Exploration Association (APPEA) Journal
... is shorter than the period of gas migration below the seal, while continuous expulsion refers to the case in which the expulsion period is much longer...
2023
Image processing of jointly acquired 3D DAS-VSP data with an OBN survey in the Middle East
G. Yu, H. Liu, Y. Zhang, H. Chen, X. Li, L. Duan, G. Cambois, J. Cowell, J. Mason, Y. Chen, J. Wu
International Meeting for Applied Geoscience and Energy (IMAGE)
... simplified case of the acoustic, isotropic and constant density wave equation, the simulated data 𝑑 is predicted using the velocity models...
2024
ABSTRACT: RTM Guided Migration Velocity Analysis: A West Africa Case History
Search and Discovery.com
N/A
The Application of PSDM VTI Method to Generate a Velocity Model That Can Solve the Mistacking Problem
Aulia Ahmad Nafis, Hasan Nurudin, Ikhsan Hanurogo, Bagus Sapto M, Ahmad Zaenudin
Indonesian Petroleum Association
... gather and gamma synthetic as the controlling factors shows less error, after that the final velocity model is used for depth migration process to compare...
2018
Improved 3D Seismic Imaging through Depth Migration and Tomography: An Indonesia Case Study
Jianli Song, Cristina Reta-Tang, Xuening Ma, Jim Wilhite, Laurie Geiger
Petroleum Exploration Society of Australia (PESA)
...Improved 3D Seismic Imaging through Depth Migration and Tomography: An Indonesia Case Study Jianli Song, Cristina Reta-Tang, Xuening Ma, Jim Wilhite...
2011
Least-squares RTM with shifted total variation regularization for depth imaging of sparse short-offset seismic data
Toktam Zand, Andrzej Gorszczyk, Ali Gholami, Hasan Ghasemzadeh, Alison Malcolm
International Meeting for Applied Geoscience and Energy (IMAGE)
...-resolution and stable imaging in the presence of rough migration velocity models. We demonstrate the performance of our method using a short offset academic...
2022