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The AAPG/Datapages Combined Publications Database
Showing 69,597 Results. Searched 195,452 documents.
Abstract: Full Waveform Inversion Algorithm using Time Imaging Methods; #90174 (2014)
Hassan Khaniani, John C. Bancroft, Gary F. Margrave, and Eric von Lunen
Search and Discovery.com
... (m) c) 3000 d) Figure 1: Numerical example FWI using PSTM imaging theory a) True velocity vs depth b) True velocity vs time c) starting velocity d...
2014
Abstract: 3-D Time-to-Depth Conversion Beneath a Deep Marine Channel: Finding the Depth Error Model Using a Pragmatic Approach, by R. W. Jeffery and D. R. Jefferis; #90920 (1999).
Search and Discovery.com
1999
-- no title --
user
Search and Discovery.com
... data sets. The veracity of the determined geologic interval velocity model is tested using prestack depth migration, and also by ng it as the initial...
Unknown
-- no title --
user
Search and Discovery.com
... data sets. The veracity of the determined geologic interval velocity model is tested using prestack depth migration, and also by ng it as the initial...
Unknown
Non-First-Break Solution for Shallow Velocity Anomaly Problem; #41602 (2015)
Emil Blias
Search and Discovery.com
.... To find a minimum of the non-linear function F, we use the Newton method. 4. Velocity anomaly replacement (VAR). We use the depth velocity model to remove...
2015
AAPG Memoir 76, Chapter 15: Forward Modeling of Log Response in Geopressured Formations Reveals Valuable Insights to the Various Pore-Pressure Prediction Techniques
J. C. Rasmus
AAPG Special Volumes
.... Plots like Figures 1 and 2 using the forward-modeled resistivity allow a prediction of pore pressure as a function of lithology, water depth...
2001
Determination and Delineation of Anomalously Pressured Gas Accumulations in the Siberia Area, Washakie Basin, Wyoming
Ronald C. Surdam, Zun Sheng Jiao, Yuri Ganshin, Nicholas G. K. Boyd III
Wyoming Geological Association
.... Surdam, R.C., J. Robinson, Z.S. Jiao, N.K. Boyd, 2001, Delineation of Jonah Field Using Seismic and Sonic Velocity Interpretations, in D.S. Anderson...
2001
Sonic velocity, submarine canyons, and burial diagenesis in Oligocene-Holocene cool-water carbonates, Gippsland Basin, southeast Australia
Malcolm W. Wallace, Guy R. Holdgate, Jim Daniels, Stephen J. Gallagher, Andrew Smith
AAPG Bulletin
..., and sediment age. Sonic velocity can be predicted to a reasonable degree of accuracy from a simple linear function of burial depth and carbonate content...
2002
First-Arrival Traveltime Inversion in the CMP Domain: Method and Application
Search and Discovery.com
... the relationship between them. In the case of a linear increase in velocity with depth, the turning ray turns at the point of maximum depth...
2013
Seismic Imaging through Outcropping Carbonates: An Example from the Canadian Rocky Mountains, , #41533 (2015).
Yong Hua, Don C. Lawton
Search and Discovery.com
..., the long-wavelength static value was calculated by using the final near–surface velocity model with a carefully chosen a lateral smoother...
2015
Analytical Velocity Modeling for Offshore East Coast of India: An Approach Using VSP Time-Depth Dataset, #11036 (2018).
Nidhi Jindal, Anup K. Shahi, Kumar Hemant Singh
Search and Discovery.com
...Analytical Velocity Modeling for Offshore East Coast of India: An Approach Using VSP Time-Depth Dataset, #11036 (2018). Nidhi Jindal, Anup K. Shahi...
2018
Abstract: Automatic High-Density Constrained Velocity Picking; #90211 (2015)
Emil Blias
Search and Discovery.com
.... A velocity model, beyond its initial purpose to obtain a seismic stack, is used for time and depth imaging, AVO analysis and inversion, pore pressure...
2015
How to Make Velocity Corrections
John W. Daly
AAPG Bulletin
... assumes a linear increase in instantaneous velocity with depth the ray paths are circular. This is one of the more common assumptions used by up-to-date...
1944
The SDP Dip Plotter
W. S. Hawes
Oklahoma City Geological Society
... of velocity with depth is present. Figure 2 shows the form for the classical case of linear increase of velocity with depth. This, of course, is the type...
1958
Slide Rule Seismic Computations
Robert H. Mansfield
Oklahoma City Geological Society
... a wide range of possible velocity functions. The circular ray path obtained by using a linear increase of velocity with depth provides a rather accurate...
1958
Complex Model Building using Objective Construction of Curve Ray Time Migration Moveout with Geologic Constraints, #41596 (2015).
Kerry Stinson, Shlomo Levy, Edward Crase, Wai-Kin Chan
Search and Discovery.com
... geologic interval velocity model is tested using prestack depth migration, and also as the initial model for subsequent prestack depth updating...
2015
Depth Conversion in the Llanos Basin: Workflow to Reduce Fault Shadow Effect.
Andrew Chermak, Gabriel Veloza Fajardo, Juan Carlos Ramón
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... employing a single Time-Depth function, all velocity models were constructed using tops and seismic times from 22 wells as input with two wells, Vigia-4...
2009
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
...Abstract: Migration Velocity Analysis of Incomplete Data Using LSPSM CIGs; #90174 (2014) Abdolnaser Yousefzadeh, John C. Bancroft, and Gary F...
2014
Crustal thickness and velocity structure of southern Peninsular Malaysia
Abdul Halim Abdul Latiff, Amin Esmail Khalil
Geological Society of Malaysia (GSM)
... the inverted waveform indicate a gradual velocity increment from Conrad boundary (around 10-12 km depth) to Moho thickness in both cases. The findings...
2018
Tomography Techniques Applied to Near Surface Velocity Models in Complex Areas of Colombia
Jorge Monsegny, Saúl Guevara
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... the intersection of hyperplanes in the velocity model space (Stewart, 1991; Lo Tien, 1994). Nevertheless, the basic formulation of these linear methods...
2008
Abstract: Model Parametrization Strategies for Newton-Based Acoustic Full Waveform Inversion; #90224 (2015)
Amsalu Y. Anagaw
Search and Discovery.com
... studies the effects of model parameterizations on velocity model building using full waveform inversion with Newton-based optimization method. Three...
2015
Application of Wave Equation Tomography in Frontier Areas
Tien-when Lo, Guy W. Purnell
Indonesian Petroleum Association
... Fourier transform of the scattered wavefield at each frequency, calculating the object function O(r) at those frequencies. The velocity profile C(r...
1990
SAMPLE--Seismic Amplitude Measurement for Primary Lithology Estimation: ABSTRACT
Gary S. Gassaway, H. J. Richgels
AAPG Bulletin
...-depth-point (CDP) gather. From a crossplot of pressure wave velocity and Poisson's ratio, lithologies and pore fluids are then estimated. The SAMPLE...
1984
Abstract: Kirchhoff Imaging with Adaptive Greens Functions for Compensation for Dispersion, Attenuation, and Velocity Imprecision; #90187 (2014)
Andrew V. Barrett
Search and Discovery.com
... and Hormander) index. Here I instead define the Green’s function to be a short convolutional operator derived using a set of input pilot image traces...
2014
Application of Full Waveform Inversion to Resolve an Eroded Shallow Carbonate Platform, North Madura, East Java, Indonesia
David Cavalin, Nurrul Ismail, Tom Paten, Kola Agbebi, Dave Lim
Indonesian Petroleum Association
... measured between the observed shots and shots modeled using a specific model set (velocity, anisotropy, density, Q) is called objective function...
2019