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The AAPG/Datapages Combined Publications Database
Showing 33,118 Results. Searched 200,293 documents.
Migration Velocity Analysis by Migration of Velocity Spectra
Craig J. Beasley, Rolf Klotz
Southeast Asia Petroleum Exploration Society (SEAPEX)
... spectra of the model data. Figure 3. Constant-velocity slice at 2000 m/s. Figure 4. Constant-velocity f-k migration (1750 m/s) for the data...
1992
Modified Residual Migration
Craig J. Beasley, Rolf Klotz
Southeast Asia Petroleum Exploration Society (SEAPEX)
... leaving a small amount of migration for the residual step. However, in practice, the limitation of using constant velocity for the first stage often...
1992
A Time Migration Before Stack
Richard Cooper, Malcolm Hobson
Geological Society of Malaysia (GSM)
... would overcorrect the data causing migration "smiles". In the case of complex structure some migration prior to velocity analysis could simplify...
1991
Abstract: Migration Velocity Analysis of Incomplete Data Using LSPSM CIGs; #90174 (2014)
Abdolnaser Yousefzadeh, John C. Bancroft, and Gary F. Margrave
Search and Discovery.com
...n be used to update the velocity model used for imaging. Migration velocity analysis can be implemented by performing constant velocity migration seve...
2014
Geoscience Integration and Interpretive Model Building to Overcome Seismic Imaging Problems in Foothills Environments; #41547 (2015)
Rob Vestrum
Search and Discovery.com
... constant-velocity time migrations to an output analysis grid. For each constant-velocity migration, we generate two types of output: (1) full migrated...
2015
Imaging of Fractures and Faults inside Granite Basement Using Controlled Beam Migration (Geophysics Paper 5)
Don Pham, Jason Sun, James Sun, Qingbing Tang, Graeme Bone, Nguyen Truong Giang
Geological Society of Malaysia (GSM)
... and constant velocity sweep below the top of basement. Even with this effort, it was difficult to interpret because the image was contaminated with noise...
2008
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
... of an appropriate near-surface strategy, we perform prestack time migration of shot gathers using a range of constant velocities and create an rms...
2015
The Application of Image Processing Techniques for Complex Structures
V. Sudhakar, I. T. McMahon
Indonesian Petroleum Association
.... Once the migration is completed, the data is reorganized into the common depth point (CDP) domain. The velocity analysis for stack will use...
1987
Seismic Modeling and Expression of Common Fold-Thrust Belt Structures; #42266 (2018)
Jianjun Li, Shankar Mitra
Search and Discovery.com
... are relatively low. Although depth migration can correct for many of the velocity related pitfalls discussed above, the processing is dependent on accurate...
2018
Abstract: Velocity Problems not Related with Thrusting or Salt Tectonics, by O. Ferraris, A. Salinas, M. Koremblit, and D. Soubies; #90933 (1998).
Search and Discovery.com
1998
Chart Migrations
Frank A. Roberts
Oklahoma City Geological Society
... universal dip chart: The average velocity must be known and constant. The accuracy decreases as the depth decreases and as the dip increases...
1958
AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction
David W. Bell
AAPG Special Volumes
... Geophysics, 384 p. Whitmore, N. D., and J. D. Garing, 1993, Interval velocity estimation using iterative prestack depth migration in the constant angle...
2001
-- no title --
user1
Search and Discovery.com
... Corporation Extended abstract Introduction The quality of pre-migration seismic data, accuracy of the velocity model, and choice of migration algorithm...
Unknown
Visco-Acoustic Full-Waveform Inversion: A Case Study to Resolve High-Resolution Shallow Channel Absorption, Offshore Indonesia
Jun Wang, Yonghe Guo, Putri Supriandini, Kelik Moersidin, Rahmad Hidayat
Indonesian Petroleum Association
...-resolution velocity and Q models of the shallow channel system, providing superior imaging when using Qcompensated pre-stack depth migration (Q-PSDM...
2022
Depth Imaging Through Surface Carbonates: A 2D Example from the Canadian Rocky Mountains; #41554 (2015)
Yong Hua, Don Lawton
Search and Discovery.com
... factor to develop geologically realistic velocity models for optimizing seismic imaging using PSDM. Many case studies in the Canadian Rocky Mountains (e.g....
2015
Relation between dips of prestack time migrated and unmigrated data
Jagmeet Singh
International Meeting for Applied Geoscience and Energy (IMAGE)
... the correctness of the migration velocity model and revise velocities in an easy to determine direction (increase or decrease). A handy formula...
2024
Abstracts: Near-surface Velocity Model Building and Statics in Permafrost Regions; #90173 (2015)
Tianfei Zhu, Yan Yan, and Jon Downton
Search and Discovery.com
... a much more severe negative gradient and takes a much deeper level to reach the permafrost velocity. Case C, on the other hand, has an extremely...
2015
ABSTRACT: Extended Stolt F-K Migration, by Craig Beasley, Walt Lynn, Ken Larner, and Hung V. Nguyen; #91035 (2010)
Search and Discovery.com
2010
Pre-Stack Imaging: Time or Depth? (Paper 25)
Carl Notfors, Peter Whiting, Geoff Mansfield
Geological Society of Malaysia (GSM)
... with a constant velocity assumption, and hence do not accurately predict the CMP component of the diffraction surface when the velocity is variable. DMO...
2000
Joint velocity and event location inversion workflow in microseismic reservoir monitoring
Takashi Mizuno, Joel Le Calvez, Manish Lal Khaitan, Giulia Barisione, Irina-Tulia Stoia, Prakash Ranjan, Stefano Clerico, Xinyuan Li, Zheyuan Huang
International Meeting for Applied Geoscience and Energy (IMAGE)
... are installed in a vertical well. Reduction of objective function in case (b) initial model is generated as a constant perturbation of initial velocity...
2022
A Practical Approach to Seismic Imaging of Complex Geology, by M. Brzostowski and T. Jones #40057
Search and Discovery.com
N/A
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
The Application of a Linear Increase of Velocity with Depth to Seismic Dip Migration
J. E. Stones
Oklahoma City Geological Society
...The Application of a Linear Increase of Velocity with Depth to Seismic Dip Migration J. E. Stones 1958 304 304 The purpose of this paper is two-fold...
1958
An Interpreter's Guide to Improvements in Depth Imaging through Model-Based Velocity Estimation and Refinement
Andy Furniss
Petroleum Exploration Society of Australia (PESA)
... that time migration will image seismic reflections in their correct spatial position, most are aware that this is not the case where lateral velocity...
1999
Near Surface Imaging using Joint Seismic Gravity Inversion
Teguh Suroso, Boko Nurdiyanto, Trilaksita B. Nugraha, Lita Novitasari, Heri Winarto
Indonesian Petroleum Association
.... Velocity Analysis Velocity analysis was performed on seismic gathers using a range of constant velocities. The resulting constant velocity migration...
2019