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The AAPG/Datapages Combined Publications Database
Showing 33,118 Results. Searched 200,293 documents.
Secondary migration of heavy oil in low dip basins
Mario Valderrama
AAPG Bulletin
...), and then estimate the migration velocity using constant values for the remaining variables. We used an average API of 20° to account...
2022
Image - Rays and the Treatment of Inhomogeneity in Migration
L. Hatton
Southeast Asia Petroleum Exploration Society (SEAPEX)
.... Constant Velocity Medium: Horizontal Layers. This case is illustrated in Figure 7a. Simple depth conversion is all that is required here. Constant...
1980
How to Make Velocity Corrections
John W. Daly
AAPG Bulletin
... in Case IV. For practical purposes, in computing it is virtually necessary to hold the velocity distribution with depth constant over an area...
1944
AAPG Memoir 76, Chapter 19: The Future of Pressure Prediction Using Geophysical Methods
Alan R. Huffman
AAPG Special Volumes
...) demonstrating the relationship between effective stress and velocity in a granular material of approximately constant porosity. The schematic...
2001
Improving subsalt images using reflection FWI on WAZ data: Examples from the Gulf of Mexico
Maksym Kryvohuz, Yihua Cai, Sebastian Ramirez, Robert Schelstrate, Gislain Madiba
International Meeting for Applied Geoscience and Energy (IMAGE)
..., by running LeastSquare Reverse-Time Migration (LSRTM) after each velocity update to obtain a “true-amplitude” reflectivity 𝑟(𝑐0 ). Yet, the latter...
2022
Where Is My Horizontal Well? Use of Borehole Seismic Where Velocities Vary Laterally
Agus Muharam, Frank Musgrove
Indonesian Petroleum Association
... and the reservoir reefal limestone but the assumption of constant overburden velocity is not well founded. Statics and variable velocity in this thrusted...
1998
Abstract: The Fallacy of Simple Geology: a Case for Depth Imaging All 3-D Data, by J. A. Young; #90090 (2009).
Search and Discovery.com
2009
Mainstream Mantle Convection: A Geologic Analysis of Plate Motion
T. H. Nelson , P. G. Temple
AAPG Bulletin
..., plus full spreading rate of ridge, S; and velocity of ridge migration VR is equal to VM + S/2. (Arrows are proportional to flow velocities.) Fig. 4...
1972
Abstract: Imaging Scattered Seismic Energy in Alberta Oil Sands; #90187 (2014)
Andrew V. Barrett
Search and Discovery.com
.... Introduce the change of variable τ = t - tm , where tm(x,xs,xr) is a reference time. In the case of time migration, tm is taken to be the two way travel time...
2014
ABSTRACT: DEPTH IMAGING VELOCITY ESTIMATION CASE HISTORY IN A CHALLENGING AREA OF CALIFORNIA; #90014 (2003)
Fliedner, Moritz, Dimitri Bevc, Robert Clapp
Search and Discovery.com
...ABSTRACT: DEPTH IMAGING VELOCITY ESTIMATION CASE HISTORY IN A CHALLENGING AREA OF CALIFORNIA; #90014 (2003) Fliedner, Moritz, Dimitri Bevc, Robert...
Unknown
A Robust Gradient for Long Wavelength FWI Updates
Jaime Ramos-Martinez, Sean Crawley, Kathy Zou, Alejandro Valenciano, Lingyun Qiu, Nizar Chemingui, Andrew Long
Petroleum Exploration Society of Australia (PESA)
... the migration isochrones that dominate the gradient in heterogeneous media, thereby accommodating low wavenumber updates in the velocity model beyond...
2016
Seismic Migration: Part 7. Geophysical Methods
Ken Larner, David Hale
AAPG Special Volumes
... that is homogeneous (constant P-wave velocity) with the exception of an isolated boulder at some depth. Also shown are the straight ray paths traveled...
1992
Slide Rule Seismic Computations
Robert H. Mansfield
Oklahoma City Geological Society
... of velocity assumptions in plotting seismic data. Using different mathematical functions, one may assume that the velocity remains constant...
1958
3-D Velocity Model Building via Iterative One-Pass Depth Migration
I.F. Jones
CSPG Special Publications
...3-D Velocity Model Building via Iterative One-Pass Depth Migration I.F. Jones 1994 54 55...
1994
-- no title --
user
Search and Discovery.com
... in the data. To develop a velocity model for pre-stack depth migration (PSDM) we integrated all available sources of velocity and geological information...
Unknown
-- no title --
user
Search and Discovery.com
... in the data. To develop a velocity model for pre-stack depth migration (PSDM) we integrated all available sources of velocity and geological information...
Unknown
A Comparison of Depth Conversion Methods in Buntal Gas Field, Block B, Natuna Sea, Indonesia
Irfan Yuliandri Syukri, John Hughes, Medi Medianesterian
Indonesian Petroleum Association
... and depth is established (assumes a depth constant compaction factor (k)). The increase of velocity with depth due to compaction is a measurable...
2014
Abstract: Depth Velocity Model Optimization Using Beam Migration in a Mediterranean Field Offshore Egypt, by Ahmed El Bassiony, Bertrand Caselitz, Vira Matsourak, and Charles Zeltser; #90105 (2010)
Search and Discovery.com
2010
Chapter 10-part 3: 3-D Depth Image Interpretation
William L. Abriel, Joseph P. Stefani, Robert D. Shank, David C. Bartel
AAPG Special Volumes
... in spatially smooth RMS velocities are generally not harmful in time migration, cumulative errors in the local interval velocity are leveraged and magnified...
2011
Section 2: Improvement of Seismic Images of Complex Tectonic Structure in Deep Water with Research-Level Processing Sequences
John Miller and Roland von Huene
AAPG Special Volumes
... Figure 2.3B using velocities determined from constant-velocity migration analysis (Figure 2.3F) End_Page 4-------------------------- produces greater...
1986
Seismic Imaging Improvements in the Bolivian Fold-and-Thrust Belt Through Psdm
A. Rocha, J. Subia
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... 8000 m (below) migration aperture (crest to the left end of the line) Postack migration test Due to the lateral velocity variation, the minimum...
2006
Abstract: 3D Seismic Imaging in the Pakistan Foothills: A Case History; #90172 (2014)
Victor Dolgov, Rob Vestrum, Jon Gittins, Géza Wittman
Search and Discovery.com
... are inherently managed through the Kirchhoff-migration process. This velocity-analysis methodology is illustrated by the screen captures from the velocityanalysis...
2014
Constant Velocity Case
A. J. Oden
Oklahoma City Geological Society
...Constant Velocity Case A. J. Oden 1958 301 302 Most of the speakers on this panel have had to brush up on the very latest methods, but the principal...
1958
Procesamiento de Datos Sismicos en Areas de Topografia Irregular: Caso Historico en el Flanco Sur Andino [PAPER IN SPANISH] Seismic Data Processing in Areas of Irregular Topography: A Case History in the Andean Southern Flank: Abstract
Eulogio del Pino, Jose Licheri, Sergio dos Santos
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... The main problen was to compute short and long wavelength static and dinamic corrections to a constant datum below and above the surface. Velocity...
1994
True Amplitude Preserved Multi-Azimuth Pre-Stack Depth Migration for Structural and Reservoir Characterization (Sisi-Nubi Field, Indonesia)
M. Baturin, F. Bertini, J. Bonnafé, A. Riou, S. Birdus, Y. Yin
Indonesian Petroleum Association
... in the shallow interval; these velocity and imagery artifacts were not fully solved by the initial 2004-2005 Pre-Stack Time Migration processing (Fig. 5...
2011